DevVGA-SVGA3d-ogl.cpp@ 93956

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1	/* $Id: DevVGA-SVGA3d-ogl.cpp 93115 2022-01-01 11:31:46Z vboxsync $ */
2	/** @file
3	* DevVMWare - VMWare SVGA device
4	*/
5
6	/*
7	* Copyright (C) 2013-2022 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	/* Enable to disassemble defined shaders. (Windows host only) */
23	#if defined(RT_OS_WINDOWS) && defined(DEBUG) && 0 /* Disabled as we don't have the DirectX SDK avaible atm. */
24	# define DUMP_SHADER_DISASSEMBLY
25	#endif
26	#ifdef DEBUG_bird
27	//# define RTMEM_WRAP_TO_EF_APIS
28	#endif
29	#define LOG_GROUP LOG_GROUP_DEV_VMSVGA
30	#define GL_SILENCE_DEPRECATION /* shut up deprecated warnings on darwin (10.15 sdk) */
31	#include <VBox/vmm/pdmdev.h>
32	#include <VBox/version.h>
33	#include <VBox/err.h>
34	#include <VBox/log.h>
35	#include <VBox/vmm/pgm.h>
36	#include <VBox/AssertGuest.h>
37
38	#include <iprt/assert.h>
39	#include <iprt/semaphore.h>
40	#include <iprt/uuid.h>
41	#include <iprt/mem.h>
42
43	#include <VBoxVideo.h> /* required by DevVGA.h */
44	#include <VBoxVideo3D.h>
45
46	/* should go BEFORE any other DevVGA include to make all DevVGA.h config defines be visible */
47	#include "DevVGA.h"
48
49	#include "DevVGA-SVGA.h"
50	#include "DevVGA-SVGA3d.h"
51	#include "DevVGA-SVGA3d-internal.h"
52
53	#ifdef DUMP_SHADER_DISASSEMBLY
54	# include <d3dx9shader.h>
55	#endif
56
57	#include <stdlib.h>
58	#include <math.h>
59	#include <float.h> /* FLT_MIN */
60
61
62	/*********************************************************************************************************************************
63	* Defined Constants And Macros *
64	*********************************************************************************************************************************/
65	#ifndef VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE
66	# define VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE 1.0
67	#endif
68
69	#ifdef VMSVGA3D_DYNAMIC_LOAD
70	# define OGLGETPROCADDRESS glLdrGetProcAddress
71	#else
72	#ifdef RT_OS_WINDOWS
73	# define OGLGETPROCADDRESS MyWinGetProcAddress
74	DECLINLINE(PROC) MyWinGetProcAddress(const char *pszSymbol)
75	{
76	/* Khronos: [on failure] "some implementations will return other values. 1, 2, and 3 are used, as well as -1". */
77	PROC p = wglGetProcAddress(pszSymbol);
78	if (RT_VALID_PTR(p))
79	return p;
80	return 0;
81	}
82	#elif defined(RT_OS_DARWIN)
83	# include <dlfcn.h>
84	# define OGLGETPROCADDRESS MyNSGLGetProcAddress
85	/** Resolves an OpenGL symbol. */
86	static void MyNSGLGetProcAddress(const char pszSymbol)
87	{
88	/* Another copy in shaderapi.c. */
89	static void *s_pvImage = NULL;
90	if (s_pvImage == NULL)
91	s_pvImage = dlopen("/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL", RTLD_LAZY);
92	return s_pvImage ? dlsym(s_pvImage, pszSymbol) : NULL;
93	}
94
95	#else
96	# define OGLGETPROCADDRESS(x) glXGetProcAddress((const GLubyte *)x)
97	#endif
98	#endif
99
100	/* Invert y-coordinate for OpenGL's bottom left origin. */
101	#define D3D_TO_OGL_Y_COORD(ptrSurface, y_coordinate) (ptrSurface->paMipmapLevels[0].mipmapSize.height - (y_coordinate))
102	#define D3D_TO_OGL_Y_COORD_MIPLEVEL(ptrMipLevel, y_coordinate) (ptrMipLevel->size.height - (y_coordinate))
103
104	/**
105	* Macro for doing something and then checking for errors during initialization.
106	* Uses AssertLogRelMsg.
107	*/
108	#define VMSVGA3D_INIT_CHECKED(a_Expr) \
109	do \
110	{ \
111	a_Expr; \
112	GLenum iGlError = glGetError(); \
113	AssertLogRelMsg(iGlError == GL_NO_ERROR, ("VMSVGA3d: %s -> %#x\n", #a_Expr, iGlError)); \
114	} while (0)
115
116	/**
117	* Macro for doing something and then checking for errors during initialization,
118	* doing the same in the other context when enabled.
119	*
120	* This will try both profiles in dual profile builds. Caller must be in the
121	* default context.
122	*
123	* Uses AssertLogRelMsg to indicate trouble.
124	*/
125	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
126	# define VMSVGA3D_INIT_CHECKED_BOTH(a_pState, a_pContext, a_pOtherCtx, a_Expr) \
127	do \
128	{ \
129	for (uint32_t i = 0; i < 64; i++) if (glGetError() == GL_NO_ERROR) break; Assert(glGetError() == GL_NO_ERROR); \
130	a_Expr; \
131	GLenum iGlError = glGetError(); \
132	if (iGlError != GL_NO_ERROR) \
133	{ \
134	VMSVGA3D_SET_CURRENT_CONTEXT(a_pState, a_pOtherCtx); \
135	for (uint32_t i = 0; i < 64; i++) if (glGetError() == GL_NO_ERROR) break; Assert(glGetError() == GL_NO_ERROR); \
136	a_Expr; \
137	GLenum iGlError2 = glGetError(); \
138	AssertLogRelMsg(iGlError2 == GL_NO_ERROR, ("VMSVGA3d: %s -> %#x / %#x\n", #a_Expr, iGlError, iGlError2)); \
139	VMSVGA3D_SET_CURRENT_CONTEXT(a_pState, a_pContext); \
140	} \
141	} while (0)
142	#else
143	# define VMSVGA3D_INIT_CHECKED_BOTH(a_pState, a_pContext, a_pOtherCtx, a_Expr) VMSVGA3D_INIT_CHECKED(a_Expr)
144	#endif
145
146
147	/*********************************************************************************************************************************
148	* Global Variables *
149	*********************************************************************************************************************************/
150	/* Define the default light parameters as specified by MSDN. */
151	/** @todo move out; fetched from Wine */
152	const SVGA3dLightData vmsvga3d_default_light =
153	{
154	SVGA3D_LIGHTTYPE_DIRECTIONAL, /* type */
155	false, /* inWorldSpace */
156	{ 1.0f, 1.0f, 1.0f, 0.0f }, /* diffuse r,g,b,a */
157	{ 0.0f, 0.0f, 0.0f, 0.0f }, /* specular r,g,b,a */
158	{ 0.0f, 0.0f, 0.0f, 0.0f }, /* ambient r,g,b,a, */
159	{ 0.0f, 0.0f, 0.0f }, /* position x,y,z */
160	{ 0.0f, 0.0f, 1.0f }, /* direction x,y,z */
161	0.0f, /* range */
162	0.0f, /* falloff */
163	0.0f, 0.0f, 0.0f, /* attenuation 0,1,2 */
164	0.0f, /* theta */
165	0.0f /* phi */
166	};
167
168
169	/*********************************************************************************************************************************
170	* Internal Functions *
171	*********************************************************************************************************************************/
172	static int vmsvga3dContextDestroyOgl(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid);
173	static DECLCALLBACK(int) vmsvga3dBackContextDestroy(PVGASTATECC pThisCC, uint32_t cid);
174	static void vmsvgaColor2GLFloatArray(uint32_t color, GLfloat pRed, GLfloat pGreen, GLfloat pBlue, GLfloat pAlpha);
175	static DECLCALLBACK(int) vmsvga3dBackSetLightData(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, SVGA3dLightData *pData);
176	static DECLCALLBACK(int) vmsvga3dBackSetClipPlane(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, float plane[4]);
177	static DECLCALLBACK(int) vmsvga3dBackShaderDestroy(PVGASTATECC pThisCC, uint32_t cid, uint32_t shid, SVGA3dShaderType type);
178	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryDelete(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext);
179	static DECLCALLBACK(int) vmsvga3dBackCreateTexture(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t idAssociatedContext, PVMSVGA3DSURFACE pSurface);
180
181	/* Generated by VBoxDef2LazyLoad from the VBoxSVGA3D.def and VBoxSVGA3DObjC.def files. */
182	extern "C" int ExplicitlyLoadVBoxSVGA3D(bool fResolveAllImports, PRTERRINFO pErrInfo);
183
184
185	/**
186	* Checks if the given OpenGL extension is supported.
187	*
188	* @returns true if supported, false if not.
189	* @param pState The VMSVGA3d state.
190	* @param rsMinGLVersion The OpenGL version that introduced this feature
191	* into the core.
192	* @param pszWantedExtension The name of the OpenGL extension we want padded
193	* with one space at each end.
194	* @remarks Init time only.
195	*/
196	static bool vmsvga3dCheckGLExtension(PVMSVGA3DSTATE pState, float rsMinGLVersion, const char *pszWantedExtension)
197	{
198	RT_NOREF(rsMinGLVersion);
199	/* check padding. */
200	Assert(pszWantedExtension[0] == ' ');
201	Assert(pszWantedExtension[1] != ' ');
202	Assert(strchr(&pszWantedExtension[1], ' ') + 1 == strchr(pszWantedExtension, '\0'));
203
204	/* Look it up. */
205	bool fRet = false;
206	if (strstr(pState->pszExtensions, pszWantedExtension))
207	fRet = true;
208
209	/* Temporarily. Later start if (rsMinGLVersion != 0.0 && fActualGLVersion >= rsMinGLVersion) return true; */
210	#ifdef RT_OS_DARWIN
211	AssertMsg( rsMinGLVersion == 0.0
212	\|\| fRet == (pState->rsGLVersion >= rsMinGLVersion)
213	\|\| VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE == 2.1,
214	("%s actual:%d min:%d fRet=%d\n",
215	pszWantedExtension, (int)(pState->rsGLVersion * 10), (int)(rsMinGLVersion * 10), fRet));
216	#else
217	AssertMsg(rsMinGLVersion == 0.0 \|\| fRet == (pState->rsGLVersion >= rsMinGLVersion),
218	("%s actual:%d min:%d fRet=%d\n",
219	pszWantedExtension, (int)(pState->rsGLVersion * 10), (int)(rsMinGLVersion * 10), fRet));
220	#endif
221	return fRet;
222	}
223
224
225	/**
226	* Outputs GL_EXTENSIONS list to the release log.
227	*/
228	static void vmsvga3dLogRelExtensions(const char pszPrefix, const char pszExtensions)
229	{
230	/* OpenGL 3.0 interface (glGetString(GL_EXTENSIONS) return NULL). */
231	bool fBuffered = RTLogRelSetBuffering(true);
232
233	/*
234	* Determin the column widths first.
235	*/
236	size_t acchWidths[4] = { 1, 1, 1, 1 };
237	uint32_t i;
238	const char *psz = pszExtensions;
239	for (i = 0; ; i++)
240	{
241	while (*psz == ' ')
242	psz++;
243	if (!*psz)
244	break;
245
246	const char *pszEnd = strchr(psz, ' ');
247	AssertBreak(pszEnd);
248	size_t cch = pszEnd - psz;
249
250	uint32_t iColumn = i % RT_ELEMENTS(acchWidths);
251	if (acchWidths[iColumn] < cch)
252	acchWidths[iColumn] = cch;
253
254	psz = pszEnd;
255	}
256
257	/*
258	* Output it.
259	*/
260	LogRel(("VMSVGA3d: %sOpenGL extensions (%d):", pszPrefix, i));
261	psz = pszExtensions;
262	for (i = 0; ; i++)
263	{
264	while (*psz == ' ')
265	psz++;
266	if (!*psz)
267	break;
268
269	const char *pszEnd = strchr(psz, ' ');
270	AssertBreak(pszEnd);
271	size_t cch = pszEnd - psz;
272
273	uint32_t iColumn = i % RT_ELEMENTS(acchWidths);
274	if (iColumn == 0)
275	LogRel(("\nVMSVGA3d: %-.s", acchWidths[iColumn], cch, psz));
276	else if (iColumn != RT_ELEMENTS(acchWidths) - 1)
277	LogRel((" %-.s", acchWidths[iColumn], cch, psz));
278	else
279	LogRel((" %.*s", cch, psz));
280
281	psz = pszEnd;
282	}
283
284	RTLogRelSetBuffering(fBuffered);
285	LogRel(("\n"));
286	}
287
288	/**
289	* Gathers the GL_EXTENSIONS list, storing it as a space padded list at
290	* @a ppszExtensions.
291	*
292	* @returns VINF_SUCCESS or VERR_NO_STR_MEMORY
293	* @param ppszExtensions Pointer to the string pointer. Free with RTStrFree.
294	* @param fGLProfileVersion The OpenGL profile version.
295	*/
296	static int vmsvga3dGatherExtensions(char **ppszExtensions, float fGLProfileVersion)
297	{
298	int rc;
299	*ppszExtensions = NULL;
300
301	/*
302	* Try the old glGetString interface first.
303	*/
304	const char pszExtensions = (const char )glGetString(GL_EXTENSIONS);
305	if (pszExtensions)
306	{
307	rc = RTStrAAppendExN(ppszExtensions, 3, " ", (size_t)1, pszExtensions, RTSTR_MAX, " ", (size_t)1);
308	AssertLogRelRCReturn(rc, rc);
309	}
310	else
311	{
312	/*
313	* The new interface where each extension string is retrieved separately.
314	* Note! Cannot use VMSVGA3D_INIT_CHECKED_GL_GET_INTEGER_VALUE here because
315	* the above GL_EXTENSIONS error lingers on darwin. sucks.
316	*/
317	#ifndef GL_NUM_EXTENSIONS
318	# define GL_NUM_EXTENSIONS 0x821D
319	#endif
320	GLint cExtensions = 1024;
321	glGetIntegerv(GL_NUM_EXTENSIONS, &cExtensions);
322	Assert(cExtensions != 1024);
323
324	PFNGLGETSTRINGIPROC pfnGlGetStringi = (PFNGLGETSTRINGIPROC)OGLGETPROCADDRESS("glGetStringi");
325	AssertLogRelReturn(pfnGlGetStringi, VERR_NOT_SUPPORTED);
326
327	rc = RTStrAAppend(ppszExtensions, " ");
328	for (GLint i = 0; RT_SUCCESS(rc) && i < cExtensions; i++)
329	{
330	const char pszExt = (const char )pfnGlGetStringi(GL_EXTENSIONS, i);
331	if (pszExt)
332	rc = RTStrAAppendExN(ppszExtensions, 2, pfnGlGetStringi(GL_EXTENSIONS, i), RTSTR_MAX, " ", (size_t)1);
333	}
334	AssertRCReturn(rc, rc);
335	}
336
337	#if 1
338	/*
339	* Add extensions promoted into the core OpenGL profile.
340	*/
341	static const struct
342	{
343	float fGLVersion;
344	const char *pszzExtensions;
345	} s_aPromotedExtensions[] =
346	{
347	{
348	1.1f,
349	" GL_EXT_vertex_array \0"
350	" GL_EXT_polygon_offset \0"
351	" GL_EXT_blend_logic_op \0"
352	" GL_EXT_texture \0"
353	" GL_EXT_copy_texture \0"
354	" GL_EXT_subtexture \0"
355	" GL_EXT_texture_object \0"
356	" GL_ARB_framebuffer_object \0"
357	" GL_ARB_map_buffer_range \0"
358	" GL_ARB_vertex_array_object \0"
359	"\0"
360	},
361	{
362	1.2f,
363	" EXT_texture3D \0"
364	" EXT_bgra \0"
365	" EXT_packed_pixels \0"
366	" EXT_rescale_normal \0"
367	" EXT_separate_specular_color \0"
368	" SGIS_texture_edge_clamp \0"
369	" SGIS_texture_lod \0"
370	" EXT_draw_range_elements \0"
371	"\0"
372	},
373	{
374	1.3f,
375	" GL_ARB_texture_compression \0"
376	" GL_ARB_texture_cube_map \0"
377	" GL_ARB_multisample \0"
378	" GL_ARB_multitexture \0"
379	" GL_ARB_texture_env_add \0"
380	" GL_ARB_texture_env_combine \0"
381	" GL_ARB_texture_env_dot3 \0"
382	" GL_ARB_texture_border_clamp \0"
383	" GL_ARB_transpose_matrix \0"
384	"\0"
385	},
386	{
387	1.5f,
388	" GL_SGIS_generate_mipmap \0"
389	/" GL_NV_blend_equare \0"/
390	" GL_ARB_depth_texture \0"
391	" GL_ARB_shadow \0"
392	" GL_EXT_fog_coord \0"
393	" GL_EXT_multi_draw_arrays \0"
394	" GL_ARB_point_parameters \0"
395	" GL_EXT_secondary_color \0"
396	" GL_EXT_blend_func_separate \0"
397	" GL_EXT_stencil_wrap \0"
398	" GL_ARB_texture_env_crossbar \0"
399	" GL_EXT_texture_lod_bias \0"
400	" GL_ARB_texture_mirrored_repeat \0"
401	" GL_ARB_window_pos \0"
402	"\0"
403	},
404	{
405	1.6f,
406	" GL_ARB_vertex_buffer_object \0"
407	" GL_ARB_occlusion_query \0"
408	" GL_EXT_shadow_funcs \0"
409	},
410	{
411	2.0f,
412	" GL_ARB_shader_objects \0" /??/
413	" GL_ARB_vertex_shader \0" /??/
414	" GL_ARB_fragment_shader \0" /??/
415	" GL_ARB_shading_language_100 \0" /??/
416	" GL_ARB_draw_buffers \0"
417	" GL_ARB_texture_non_power_of_two \0"
418	" GL_ARB_point_sprite \0"
419	" GL_ATI_separate_stencil \0"
420	" GL_EXT_stencil_two_side \0"
421	"\0"
422	},
423	{
424	2.1f,
425	" GL_ARB_pixel_buffer_object \0"
426	" GL_EXT_texture_sRGB \0"
427	"\0"
428	},
429	{
430	3.0f,
431	" GL_ARB_framebuffer_object \0"
432	" GL_ARB_map_buffer_range \0"
433	" GL_ARB_vertex_array_object \0"
434	"\0"
435	},
436	{
437	3.1f,
438	" GL_ARB_copy_buffer \0"
439	" GL_ARB_uniform_buffer_object \0"
440	"\0"
441	},
442	{
443	3.2f,
444	" GL_ARB_vertex_array_bgra \0"
445	" GL_ARB_draw_elements_base_vertex \0"
446	" GL_ARB_fragment_coord_conventions \0"
447	" GL_ARB_provoking_vertex \0"
448	" GL_ARB_seamless_cube_map \0"
449	" GL_ARB_texture_multisample \0"
450	" GL_ARB_depth_clamp \0"
451	" GL_ARB_sync \0"
452	" GL_ARB_geometry_shader4 \0" /??/
453	"\0"
454	},
455	{
456	3.3f,
457	" GL_ARB_blend_func_extended \0"
458	" GL_ARB_sampler_objects \0"
459	" GL_ARB_explicit_attrib_location \0"
460	" GL_ARB_occlusion_query2 \0"
461	" GL_ARB_shader_bit_encoding \0"
462	" GL_ARB_texture_rgb10_a2ui \0"
463	" GL_ARB_texture_swizzle \0"
464	" GL_ARB_timer_query \0"
465	" GL_ARB_vertex_type_2_10_10_10_rev \0"
466	"\0"
467	},
468	{
469	4.0f,
470	" GL_ARB_texture_query_lod \0"
471	" GL_ARB_draw_indirect \0"
472	" GL_ARB_gpu_shader5 \0"
473	" GL_ARB_gpu_shader_fp64 \0"
474	" GL_ARB_shader_subroutine \0"
475	" GL_ARB_tessellation_shader \0"
476	" GL_ARB_texture_buffer_object_rgb32 \0"
477	" GL_ARB_texture_cube_map_array \0"
478	" GL_ARB_texture_gather \0"
479	" GL_ARB_transform_feedback2 \0"
480	" GL_ARB_transform_feedback3 \0"
481	"\0"
482	},
483	{
484	4.1f,
485	" GL_ARB_ES2_compatibility \0"
486	" GL_ARB_get_program_binary \0"
487	" GL_ARB_separate_shader_objects \0"
488	" GL_ARB_shader_precision \0"
489	" GL_ARB_vertex_attrib_64bit \0"
490	" GL_ARB_viewport_array \0"
491	"\0"
492	}
493	};
494
495	uint32_t cPromoted = 0;
496	for (uint32_t i = 0; i < RT_ELEMENTS(s_aPromotedExtensions) && s_aPromotedExtensions[i].fGLVersion <= fGLProfileVersion; i++)
497	{
498	const char *pszExt = s_aPromotedExtensions[i].pszzExtensions;
499	while (*pszExt)
500	{
501	# ifdef VBOX_STRICT
502	size_t cchExt = strlen(pszExt);
503	Assert(cchExt > 3);
504	Assert(pszExt[0] == ' ');
505	Assert(pszExt[1] != ' ');
506	Assert(pszExt[cchExt - 2] != ' ');
507	Assert(pszExt[cchExt - 1] == ' ');
508	# endif
509
510	if (strstr(*ppszExtensions, pszExt) == NULL)
511	{
512	if (cPromoted++ == 0)
513	{
514	rc = RTStrAAppend(ppszExtensions, " <promoted-extensions:> <promoted-extensions:> <promoted-extensions:> ");
515	AssertRCReturn(rc, rc);
516	}
517
518	rc = RTStrAAppend(ppszExtensions, pszExt);
519	AssertRCReturn(rc, rc);
520	}
521
522	pszExt = strchr(pszExt, '\0') + 1;
523	}
524	}
525	#endif
526
527	return VINF_SUCCESS;
528	}
529
530	/** Check whether this is an Intel GL driver.
531	*
532	* @returns true if this seems to be some Intel graphics.
533	*/
534	static bool vmsvga3dIsVendorIntel(void)
535	{
536	return RTStrNICmp((char *)glGetString(GL_VENDOR), "Intel", 5) == 0;
537	}
538
539	/**
540	* @interface_method_impl{VBOXVMSVGASHADERIF,pfnSwitchInitProfile}
541	*/
542	static DECLCALLBACK(void) vmsvga3dShaderIfSwitchInitProfile(PVBOXVMSVGASHADERIF pThis, bool fOtherProfile)
543	{
544	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
545	PVMSVGA3DSTATE pState = RT_FROM_MEMBER(pThis, VMSVGA3DSTATE, ShaderIf);
546	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pState->papContexts[fOtherProfile ? 2 : 1]);
547	#else
548	NOREF(pThis);
549	NOREF(fOtherProfile);
550	#endif
551	}
552
553
554	/**
555	* @interface_method_impl{VBOXVMSVGASHADERIF,pfnGetNextExtension}
556	*/
557	static DECLCALLBACK(bool) vmsvga3dShaderIfGetNextExtension(PVBOXVMSVGASHADERIF pThis, void **ppvEnumCtx,
558	char *pszBuf, size_t cbBuf, bool fOtherProfile)
559	{
560	PVMSVGA3DSTATE pState = RT_FROM_MEMBER(pThis, VMSVGA3DSTATE, ShaderIf);
561	const char pszCur = ppvEnumCtx ? (const char )ppvEnumCtx
562	: fOtherProfile ? pState->pszOtherExtensions : pState->pszExtensions;
563	while (*pszCur == ' ')
564	pszCur++;
565	if (!*pszCur)
566	return false;
567
568	const char *pszEnd = strchr(pszCur, ' ');
569	AssertReturn(pszEnd, false);
570	size_t cch = pszEnd - pszCur;
571	if (cch < cbBuf)
572	{
573	memcpy(pszBuf, pszCur, cch);
574	pszBuf[cch] = '\0';
575	}
576	else if (cbBuf > 0)
577	{
578	memcpy(pszBuf, "<overflow>", RT_MIN(sizeof("<overflow>"), cbBuf));
579	pszBuf[cbBuf - 1] = '\0';
580	}
581
582	ppvEnumCtx = (void )pszEnd;
583	return true;
584	}
585
586
587	/**
588	* Initializes the VMSVGA3D state during VGA device construction.
589	*
590	* Failure are generally not fatal, 3D support will just be disabled.
591	*
592	* @returns VBox status code.
593	* @param pDevIns The device instance.
594	* @param pThis The shared VGA/VMSVGA state where svga.p3dState will be
595	* modified.
596	* @param pThisCC The VGA/VMSVGA state for ring-3.
597	*/
598	static DECLCALLBACK(int) vmsvga3dBackInit(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC)
599	{
600	int rc;
601	RT_NOREF(pDevIns, pThis);
602
603	AssertCompile(GL_TRUE == 1);
604	AssertCompile(GL_FALSE == 0);
605
606	#ifdef VMSVGA3D_DYNAMIC_LOAD
607	rc = glLdrInit(pDevIns);
608	if (RT_FAILURE(rc))
609	{
610	LogRel(("VMSVGA3d: Error loading OpenGL library and resolving necessary functions: %Rrc\n", rc));
611	return rc;
612	}
613	#endif
614
615	/*
616	* Load and resolve imports from the external shared libraries.
617	*/
618	RTERRINFOSTATIC ErrInfo;
619	rc = ExplicitlyLoadVBoxSVGA3D(true /fResolveAllImports/, RTErrInfoInitStatic(&ErrInfo));
620	if (RT_FAILURE(rc))
621	{
622	LogRel(("VMSVGA3d: Error loading VBoxSVGA3D and resolving necessary functions: %Rrc - %s\n", rc, ErrInfo.Core.pszMsg));
623	return rc;
624	}
625	#ifdef RT_OS_DARWIN
626	rc = ExplicitlyLoadVBoxSVGA3DObjC(true /fResolveAllImports/, RTErrInfoInitStatic(&ErrInfo));
627	if (RT_FAILURE(rc))
628	{
629	LogRel(("VMSVGA3d: Error loading VBoxSVGA3DObjC and resolving necessary functions: %Rrc - %s\n", rc, ErrInfo.Core.pszMsg));
630	return rc;
631	}
632	#endif
633
634	/*
635	* Allocate the state.
636	*/
637	pThisCC->svga.p3dState = (PVMSVGA3DSTATE)RTMemAllocZ(sizeof(VMSVGA3DSTATE));
638	AssertReturn(pThisCC->svga.p3dState, VERR_NO_MEMORY);
639
640	#ifdef RT_OS_WINDOWS
641	/* Create event semaphore and async IO thread. */
642	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
643	rc = RTSemEventCreate(&pState->WndRequestSem);
644	if (RT_SUCCESS(rc))
645	{
646	rc = RTThreadCreate(&pState->pWindowThread, vmsvga3dWindowThread, pState->WndRequestSem, 0, RTTHREADTYPE_GUI, 0,
647	"VMSVGA3DWND");
648	if (RT_SUCCESS(rc))
649	return VINF_SUCCESS;
650
651	/* bail out. */
652	LogRel(("VMSVGA3d: RTThreadCreate failed: %Rrc\n", rc));
653	RTSemEventDestroy(pState->WndRequestSem);
654	}
655	else
656	LogRel(("VMSVGA3d: RTSemEventCreate failed: %Rrc\n", rc));
657	RTMemFree(pThisCC->svga.p3dState);
658	pThisCC->svga.p3dState = NULL;
659	return rc;
660	#else
661	return VINF_SUCCESS;
662	#endif
663	}
664
665	static int vmsvga3dLoadGLFunctions(PVMSVGA3DSTATE pState)
666	{
667	/* A strict approach to get a proc address as recommended by Khronos:
668	* - "If the function is a core OpenGL function, then we need to check the OpenGL version".
669	* - "If the function is an extension, we need to check to see if the extension is supported."
670	*/
671
672	/* Get a function address, return VERR_NOT_IMPLEMENTED on failure. */
673	#define GLGETPROC_(ProcType, ProcName, NameSuffix) do { \
674	pState->ext.ProcName = (ProcType)OGLGETPROCADDRESS(#ProcName NameSuffix); \
675	AssertLogRelMsgReturn(pState->ext.ProcName, (#ProcName NameSuffix " missing"), VERR_NOT_IMPLEMENTED); \
676	} while(0)
677
678	/* Get an optional function address. LogRel on failure. */
679	#define GLGETPROCOPT_(ProcType, ProcName, NameSuffix) do { \
680	pState->ext.ProcName = (ProcType)OGLGETPROCADDRESS(#ProcName NameSuffix); \
681	if (!pState->ext.ProcName) \
682	{ \
683	LogRel(("VMSVGA3d: missing optional %s\n", #ProcName NameSuffix)); \
684	AssertFailed(); \
685	} \
686	} while(0)
687
688	/* OpenGL 2.0 or earlier core. Do not bother with extensions. */
689	GLGETPROC_(PFNGLGENQUERIESPROC , glGenQueries, "");
690	GLGETPROC_(PFNGLDELETEQUERIESPROC , glDeleteQueries, "");
691	GLGETPROC_(PFNGLBEGINQUERYPROC , glBeginQuery, "");
692	GLGETPROC_(PFNGLENDQUERYPROC , glEndQuery, "");
693	GLGETPROC_(PFNGLGETQUERYOBJECTUIVPROC , glGetQueryObjectuiv, "");
694	GLGETPROC_(PFNGLTEXIMAGE3DPROC , glTexImage3D, "");
695	GLGETPROC_(PFNGLTEXSUBIMAGE3DPROC , glTexSubImage3D, "");
696	GLGETPROC_(PFNGLGETCOMPRESSEDTEXIMAGEPROC , glGetCompressedTexImage, "");
697	GLGETPROC_(PFNGLCOMPRESSEDTEXIMAGE2DPROC , glCompressedTexImage2D, "");
698	GLGETPROC_(PFNGLCOMPRESSEDTEXIMAGE3DPROC , glCompressedTexImage3D, "");
699	GLGETPROC_(PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC , glCompressedTexSubImage2D, "");
700	GLGETPROC_(PFNGLCOMPRESSEDTEXSUBIMAGE3DPROC , glCompressedTexSubImage3D, "");
701	GLGETPROC_(PFNGLPOINTPARAMETERFPROC , glPointParameterf, "");
702	GLGETPROC_(PFNGLBLENDEQUATIONSEPARATEPROC , glBlendEquationSeparate, "");
703	GLGETPROC_(PFNGLBLENDFUNCSEPARATEPROC , glBlendFuncSeparate, "");
704	GLGETPROC_(PFNGLSTENCILOPSEPARATEPROC , glStencilOpSeparate, "");
705	GLGETPROC_(PFNGLSTENCILFUNCSEPARATEPROC , glStencilFuncSeparate, "");
706	GLGETPROC_(PFNGLBINDBUFFERPROC , glBindBuffer, "");
707	GLGETPROC_(PFNGLDELETEBUFFERSPROC , glDeleteBuffers, "");
708	GLGETPROC_(PFNGLGENBUFFERSPROC , glGenBuffers, "");
709	GLGETPROC_(PFNGLBUFFERDATAPROC , glBufferData, "");
710	GLGETPROC_(PFNGLMAPBUFFERPROC , glMapBuffer, "");
711	GLGETPROC_(PFNGLUNMAPBUFFERPROC , glUnmapBuffer, "");
712	GLGETPROC_(PFNGLENABLEVERTEXATTRIBARRAYPROC , glEnableVertexAttribArray, "");
713	GLGETPROC_(PFNGLDISABLEVERTEXATTRIBARRAYPROC , glDisableVertexAttribArray, "");
714	GLGETPROC_(PFNGLVERTEXATTRIBPOINTERPROC , glVertexAttribPointer, "");
715	GLGETPROC_(PFNGLACTIVETEXTUREPROC , glActiveTexture, "");
716	/* glGetProgramivARB determines implementation limits for the program
717	* target (GL_FRAGMENT_PROGRAM_ARB, GL_VERTEX_PROGRAM_ARB).
718	* It differs from glGetProgramiv, which returns a parameter from a program object.
719	*/
720	GLGETPROC_(PFNGLGETPROGRAMIVARBPROC , glGetProgramivARB, "");
721	GLGETPROC_(PFNGLFOGCOORDPOINTERPROC , glFogCoordPointer, "");
722	#if VBOX_VMSVGA3D_GL_HACK_LEVEL < 0x102
723	GLGETPROC_(PFNGLBLENDCOLORPROC , glBlendColor, "");
724	GLGETPROC_(PFNGLBLENDEQUATIONPROC , glBlendEquation, "");
725	#endif
726	#if VBOX_VMSVGA3D_GL_HACK_LEVEL < 0x103
727	GLGETPROC_(PFNGLCLIENTACTIVETEXTUREPROC , glClientActiveTexture, "");
728	#endif
729	GLGETPROC_(PFNGLDRAWBUFFERSPROC , glDrawBuffers, "");
730	GLGETPROC_(PFNGLCREATESHADERPROC , glCreateShader, "");
731	GLGETPROC_(PFNGLSHADERSOURCEPROC , glShaderSource, "");
732	GLGETPROC_(PFNGLCOMPILESHADERPROC , glCompileShader, "");
733	GLGETPROC_(PFNGLGETSHADERIVPROC , glGetShaderiv, "");
734	GLGETPROC_(PFNGLGETSHADERINFOLOGPROC , glGetShaderInfoLog, "");
735	GLGETPROC_(PFNGLCREATEPROGRAMPROC , glCreateProgram, "");
736	GLGETPROC_(PFNGLATTACHSHADERPROC , glAttachShader, "");
737	GLGETPROC_(PFNGLLINKPROGRAMPROC , glLinkProgram, "");
738	GLGETPROC_(PFNGLGETPROGRAMIVPROC , glGetProgramiv, "");
739	GLGETPROC_(PFNGLGETPROGRAMINFOLOGPROC , glGetProgramInfoLog, "");
740	GLGETPROC_(PFNGLUSEPROGRAMPROC , glUseProgram, "");
741	GLGETPROC_(PFNGLGETUNIFORMLOCATIONPROC , glGetUniformLocation, "");
742	GLGETPROC_(PFNGLUNIFORM1IPROC , glUniform1i, "");
743	GLGETPROC_(PFNGLUNIFORM4FVPROC , glUniform4fv, "");
744	GLGETPROC_(PFNGLDETACHSHADERPROC , glDetachShader, "");
745	GLGETPROC_(PFNGLDELETESHADERPROC , glDeleteShader, "");
746	GLGETPROC_(PFNGLDELETEPROGRAMPROC , glDeleteProgram, "");
747
748	GLGETPROC_(PFNGLVERTEXATTRIB4FVPROC , glVertexAttrib4fv, "");
749	GLGETPROC_(PFNGLVERTEXATTRIB4UBVPROC , glVertexAttrib4ubv, "");
750	GLGETPROC_(PFNGLVERTEXATTRIB4NUBVPROC , glVertexAttrib4Nubv, "");
751	GLGETPROC_(PFNGLVERTEXATTRIB4SVPROC , glVertexAttrib4sv, "");
752	GLGETPROC_(PFNGLVERTEXATTRIB4NSVPROC , glVertexAttrib4Nsv, "");
753	GLGETPROC_(PFNGLVERTEXATTRIB4NUSVPROC , glVertexAttrib4Nusv, "");
754
755	/* OpenGL 3.0 core, GL_ARB_instanced_arrays. Same functions names in the ARB and core specs. */
756	if ( pState->rsGLVersion >= 3.0f
757	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_framebuffer_object "))
758	{
759	GLGETPROC_(PFNGLISRENDERBUFFERPROC , glIsRenderbuffer, "");
760	GLGETPROC_(PFNGLBINDRENDERBUFFERPROC , glBindRenderbuffer, "");
761	GLGETPROC_(PFNGLDELETERENDERBUFFERSPROC , glDeleteRenderbuffers, "");
762	GLGETPROC_(PFNGLGENRENDERBUFFERSPROC , glGenRenderbuffers, "");
763	GLGETPROC_(PFNGLRENDERBUFFERSTORAGEPROC , glRenderbufferStorage, "");
764	GLGETPROC_(PFNGLGETRENDERBUFFERPARAMETERIVPROC , glGetRenderbufferParameteriv, "");
765	GLGETPROC_(PFNGLISFRAMEBUFFERPROC , glIsFramebuffer, "");
766	GLGETPROC_(PFNGLBINDFRAMEBUFFERPROC , glBindFramebuffer, "");
767	GLGETPROC_(PFNGLDELETEFRAMEBUFFERSPROC , glDeleteFramebuffers, "");
768	GLGETPROC_(PFNGLGENFRAMEBUFFERSPROC , glGenFramebuffers, "");
769	GLGETPROC_(PFNGLCHECKFRAMEBUFFERSTATUSPROC , glCheckFramebufferStatus, "");
770	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE1DPROC , glFramebufferTexture1D, "");
771	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE2DPROC , glFramebufferTexture2D, "");
772	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE3DPROC , glFramebufferTexture3D, "");
773	GLGETPROC_(PFNGLFRAMEBUFFERRENDERBUFFERPROC , glFramebufferRenderbuffer, "");
774	GLGETPROC_(PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC , glGetFramebufferAttachmentParameteriv, "");
775	GLGETPROC_(PFNGLGENERATEMIPMAPPROC , glGenerateMipmap, "");
776	GLGETPROC_(PFNGLBLITFRAMEBUFFERPROC , glBlitFramebuffer, "");
777	GLGETPROC_(PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC , glRenderbufferStorageMultisample, "");
778	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURELAYERPROC , glFramebufferTextureLayer, "");
779	}
780
781	/* OpenGL 3.1 core, GL_ARB_draw_instanced, GL_EXT_draw_instanced. */
782	if (pState->rsGLVersion >= 3.1f)
783	{
784	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "");
785	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "");
786	}
787	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_draw_instanced "))
788	{
789	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "ARB");
790	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "ARB");
791	}
792	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_draw_instanced "))
793	{
794	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "EXT");
795	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "EXT");
796	}
797
798	/* OpenGL 3.2 core, GL_ARB_draw_elements_base_vertex. Same functions names in the ARB and core specs. */
799	if ( pState->rsGLVersion >= 3.2f
800	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_draw_elements_base_vertex "))
801	{
802	GLGETPROC_(PFNGLDRAWELEMENTSBASEVERTEXPROC , glDrawElementsBaseVertex, "");
803	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC , glDrawElementsInstancedBaseVertex, "");
804	}
805
806	/* Optional. OpenGL 3.2 core, GL_ARB_provoking_vertex. Same functions names in the ARB and core specs. */
807	if ( pState->rsGLVersion >= 3.2f
808	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_provoking_vertex "))
809	{
810	GLGETPROCOPT_(PFNGLPROVOKINGVERTEXPROC , glProvokingVertex, "");
811	}
812
813	/* OpenGL 3.3 core, GL_ARB_instanced_arrays. */
814	if (pState->rsGLVersion >= 3.3f)
815	{
816	GLGETPROC_(PFNGLVERTEXATTRIBDIVISORPROC , glVertexAttribDivisor, "");
817	}
818	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_instanced_arrays "))
819	{
820	GLGETPROC_(PFNGLVERTEXATTRIBDIVISORARBPROC , glVertexAttribDivisor, "ARB");
821	}
822
823	#undef GLGETPROCOPT_
824	#undef GLGETPROC_
825
826	return VINF_SUCCESS;
827	}
828
829
830	DECLINLINE(GLenum) vmsvga3dCubemapFaceFromIndex(uint32_t iFace)
831	{
832	GLint Face;
833	switch (iFace)
834	{
835	case 0: Face = GL_TEXTURE_CUBE_MAP_POSITIVE_X; break;
836	case 1: Face = GL_TEXTURE_CUBE_MAP_NEGATIVE_X; break;
837	case 2: Face = GL_TEXTURE_CUBE_MAP_POSITIVE_Y; break;
838	case 3: Face = GL_TEXTURE_CUBE_MAP_NEGATIVE_Y; break;
839	case 4: Face = GL_TEXTURE_CUBE_MAP_POSITIVE_Z; break;
840	default:
841	case 5: Face = GL_TEXTURE_CUBE_MAP_NEGATIVE_Z; break;
842	}
843	return Face;
844	}
845
846
847	/* We must delay window creation until the PowerOn phase. Init is too early and will cause failures. */
848	static DECLCALLBACK(int) vmsvga3dBackPowerOn(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC)
849	{
850	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
851	AssertReturn(pThisCC->svga.p3dState, VERR_NO_MEMORY);
852	PVMSVGA3DCONTEXT pContext;
853	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
854	PVMSVGA3DCONTEXT pOtherCtx;
855	#endif
856	int rc;
857	RT_NOREF(pDevIns, pThis);
858
859	if (pState->rsGLVersion != 0.0)
860	return VINF_SUCCESS; /* already initialized (load state) */
861
862	/*
863	* OpenGL function calls aren't possible without a valid current context, so create a fake one here.
864	*/
865	rc = vmsvga3dContextDefineOgl(pThisCC, 1, VMSVGA3D_DEF_CTX_F_INIT);
866	AssertRCReturn(rc, rc);
867
868	pContext = pState->papContexts[1];
869	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
870
871	#ifdef VMSVGA3D_DYNAMIC_LOAD
872	/* Context is set and it is possible now to resolve extension functions. */
873	rc = glLdrGetExtFunctions(pDevIns);
874	if (RT_FAILURE(rc))
875	{
876	LogRel(("VMSVGA3d: Error resolving extension functions: %Rrc\n", rc));
877	return rc;
878	}
879	#endif
880
881	LogRel(("VMSVGA3d: OpenGL version: %s\n"
882	"VMSVGA3d: OpenGL Vendor: %s\n"
883	"VMSVGA3d: OpenGL Renderer: %s\n"
884	"VMSVGA3d: OpenGL shader language version: %s\n",
885	glGetString(GL_VERSION), glGetString(GL_VENDOR), glGetString(GL_RENDERER),
886	glGetString(GL_SHADING_LANGUAGE_VERSION)));
887
888	rc = vmsvga3dGatherExtensions(&pState->pszExtensions, VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE);
889	AssertRCReturn(rc, rc);
890	vmsvga3dLogRelExtensions("", pState->pszExtensions);
891
892	pState->rsGLVersion = atof((const char *)glGetString(GL_VERSION));
893
894
895	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
896	/*
897	* Get the extension list for the alternative profile so we can better
898	* figure out the shader model and stuff.
899	*/
900	rc = vmsvga3dContextDefineOgl(pThisCC, 2, VMSVGA3D_DEF_CTX_F_INIT \| VMSVGA3D_DEF_CTX_F_OTHER_PROFILE);
901	AssertLogRelRCReturn(rc, rc);
902	pContext = pState->papContexts[1]; /* Array may have been reallocated. */
903
904	pOtherCtx = pState->papContexts[2];
905	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
906
907	LogRel(("VMSVGA3d: Alternative OpenGL version: %s\n"
908	"VMSVGA3d: Alternative OpenGL Vendor: %s\n"
909	"VMSVGA3d: Alternative OpenGL Renderer: %s\n"
910	"VMSVGA3d: Alternative OpenGL shader language version: %s\n",
911	glGetString(GL_VERSION), glGetString(GL_VENDOR), glGetString(GL_RENDERER),
912	glGetString(GL_SHADING_LANGUAGE_VERSION)));
913
914	rc = vmsvga3dGatherExtensions(&pState->pszOtherExtensions, VBOX_VMSVGA3D_OTHER_OGL_PROFILE);
915	AssertRCReturn(rc, rc);
916	vmsvga3dLogRelExtensions("Alternative ", pState->pszOtherExtensions);
917
918	pState->rsOtherGLVersion = atof((const char *)glGetString(GL_VERSION));
919
920	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
921	#else
922	pState->pszOtherExtensions = (char *)"";
923	pState->rsOtherGLVersion = pState->rsGLVersion;
924	#endif
925
926	/*
927	* Resolve GL function pointers and store them in pState->ext.
928	*/
929	rc = vmsvga3dLoadGLFunctions(pState);
930	if (RT_FAILURE(rc))
931	{
932	LogRel(("VMSVGA3d: missing required OpenGL function or extension; aborting\n"));
933	return rc;
934	}
935
936	/*
937	* Initialize the capabilities with sensible defaults.
938	*/
939	pState->caps.maxActiveLights = 1;
940	pState->caps.maxTextures = 1;
941	pState->caps.maxClipDistances = 4;
942	pState->caps.maxColorAttachments = 1;
943	pState->caps.maxRectangleTextureSize = 2048;
944	pState->caps.maxTextureAnisotropy = 1;
945	pState->caps.maxVertexShaderInstructions = 1024;
946	pState->caps.maxFragmentShaderInstructions = 1024;
947	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_NONE;
948	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_NONE;
949	pState->caps.flPointSize[0] = 1;
950	pState->caps.flPointSize[1] = 1;
951
952	/*
953	* Query capabilities
954	*/
955	pState->caps.fS3TCSupported = vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_texture_compression_s3tc ");
956	pState->caps.fTextureFilterAnisotropicSupported = vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_texture_filter_anisotropic ");
957
958	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetIntegerv(GL_MAX_LIGHTS, &pState->caps.maxActiveLights));
959	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &pState->caps.maxTextures));
960	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE /* The alternative profile has a higher number here (ati/darwin). */
961	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
962	VMSVGA3D_INIT_CHECKED_BOTH(pState, pOtherCtx, pContext, glGetIntegerv(GL_MAX_CLIP_DISTANCES, &pState->caps.maxClipDistances));
963	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
964	#else
965	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_CLIP_DISTANCES, &pState->caps.maxClipDistances));
966	#endif
967	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS, &pState->caps.maxColorAttachments));
968	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_RECTANGLE_TEXTURE_SIZE, &pState->caps.maxRectangleTextureSize));
969	if (pState->caps.fTextureFilterAnisotropicSupported)
970	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &pState->caps.maxTextureAnisotropy));
971	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, pState->caps.flPointSize));
972
973	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
974	pState->ext.glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB,
975	&pState->caps.maxFragmentShaderTemps));
976	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
977	pState->ext.glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB,
978	&pState->caps.maxFragmentShaderInstructions));
979	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
980	pState->ext.glGetProgramivARB(GL_VERTEX_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB,
981	&pState->caps.maxVertexShaderTemps));
982	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
983	pState->ext.glGetProgramivARB(GL_VERTEX_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB,
984	&pState->caps.maxVertexShaderInstructions));
985
986	/* http://http://www.opengl.org/wiki/Detecting_the_Shader_Model
987	* ARB Assembly Language
988	* These are done through testing the presence of extensions. You should test them in this order:
989	* GL_NV_gpu_program4: SM 4.0 or better.
990	* GL_NV_vertex_program3: SM 3.0 or better.
991	* GL_ARB_fragment_program: SM 2.0 or better.
992	* ATI does not support higher than SM 2.0 functionality in assembly shaders.
993	*
994	*/
995	/** @todo distinguish between vertex and pixel shaders??? */
996	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE /* The alternative profile has a higher number here (ati/darwin). */
997	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
998	const char pszShadingLanguageVersion = (const char )glGetString(GL_SHADING_LANGUAGE_VERSION);
999	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
1000	#else
1001	const char pszShadingLanguageVersion = (const char )glGetString(GL_SHADING_LANGUAGE_VERSION);
1002	#endif
1003	float v = pszShadingLanguageVersion ? atof(pszShadingLanguageVersion) : 0.0f;
1004	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_NV_gpu_program4 ")
1005	\|\| strstr(pState->pszOtherExtensions, " GL_NV_gpu_program4 "))
1006	{
1007	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_40;
1008	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_40;
1009	}
1010	else
1011	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_NV_vertex_program3 ")
1012	\|\| strstr(pState->pszOtherExtensions, " GL_NV_vertex_program3 ")
1013	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_shader_texture_lod ") /* Wine claims this suggests SM 3.0 support */
1014	\|\| strstr(pState->pszOtherExtensions, " GL_ARB_shader_texture_lod ")
1015	)
1016	{
1017	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_30;
1018	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_30;
1019	}
1020	else
1021	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_fragment_program ")
1022	\|\| strstr(pState->pszOtherExtensions, " GL_ARB_fragment_program "))
1023	{
1024	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_20;
1025	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_20;
1026	}
1027	else
1028	{
1029	LogRel(("VMSVGA3D: WARNING: unknown support for assembly shaders!!\n"));
1030	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_11;
1031	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_11;
1032	}
1033
1034	/* Now check the shading language version, in case it indicates a higher supported version. */
1035	if (v >= 3.30f)
1036	{
1037	pState->caps.vertexShaderVersion = RT_MAX(pState->caps.vertexShaderVersion, SVGA3DVSVERSION_40);
1038	pState->caps.fragmentShaderVersion = RT_MAX(pState->caps.fragmentShaderVersion, SVGA3DPSVERSION_40);
1039	}
1040	else
1041	if (v >= 1.20f)
1042	{
1043	pState->caps.vertexShaderVersion = RT_MAX(pState->caps.vertexShaderVersion, SVGA3DVSVERSION_20);
1044	pState->caps.fragmentShaderVersion = RT_MAX(pState->caps.fragmentShaderVersion, SVGA3DPSVERSION_20);
1045	}
1046
1047	if ( !vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_vertex_array_bgra ")
1048	&& !vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_vertex_array_bgra "))
1049	{
1050	LogRel(("VMSVGA3D: WARNING: Missing required extension GL_ARB_vertex_array_bgra (d3dcolor)!!!\n"));
1051	}
1052
1053	/*
1054	* Tweak capabilities.
1055	*/
1056	/* Intel Windows drivers return 31, while the guest expects 32 at least. */
1057	if ( pState->caps.maxVertexShaderTemps < 32
1058	&& vmsvga3dIsVendorIntel())
1059	pState->caps.maxVertexShaderTemps = 32;
1060
1061	#if 0
1062	SVGA3D_DEVCAP_MAX_FIXED_VERTEXBLEND = 11,
1063	SVGA3D_DEVCAP_QUERY_TYPES = 15,
1064	SVGA3D_DEVCAP_TEXTURE_GRADIENT_SAMPLING = 16,
1065	SVGA3D_DEVCAP_MAX_POINT_SIZE = 17,
1066	SVGA3D_DEVCAP_MAX_SHADER_TEXTURES = 18,
1067	SVGA3D_DEVCAP_MAX_VOLUME_EXTENT = 21,
1068	SVGA3D_DEVCAP_MAX_TEXTURE_REPEAT = 22,
1069	SVGA3D_DEVCAP_MAX_TEXTURE_ASPECT_RATIO = 23,
1070	SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY = 24,
1071	SVGA3D_DEVCAP_MAX_PRIMITIVE_COUNT = 25,
1072	SVGA3D_DEVCAP_MAX_VERTEX_INDEX = 26,
1073	SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_INSTRUCTIONS = 28,
1074	SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS = 29,
1075	SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS = 30,
1076	SVGA3D_DEVCAP_TEXTURE_OPS = 31,
1077	SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8 = 32,
1078	SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8 = 33,
1079	SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10 = 34,
1080	SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5 = 35,
1081	SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5 = 36,
1082	SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4 = 37,
1083	SVGA3D_DEVCAP_SURFACEFMT_R5G6B5 = 38,
1084	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16 = 39,
1085	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8 = 40,
1086	SVGA3D_DEVCAP_SURFACEFMT_ALPHA8 = 41,
1087	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8 = 42,
1088	SVGA3D_DEVCAP_SURFACEFMT_Z_D16 = 43,
1089	SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8 = 44,
1090	SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8 = 45,
1091	SVGA3D_DEVCAP_SURFACEFMT_DXT1 = 46,
1092	SVGA3D_DEVCAP_SURFACEFMT_DXT2 = 47,
1093	SVGA3D_DEVCAP_SURFACEFMT_DXT3 = 48,
1094	SVGA3D_DEVCAP_SURFACEFMT_DXT4 = 49,
1095	SVGA3D_DEVCAP_SURFACEFMT_DXT5 = 50,
1096	SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8 = 51,
1097	SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10 = 52,
1098	SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8 = 53,
1099	SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8 = 54,
1100	SVGA3D_DEVCAP_SURFACEFMT_CxV8U8 = 55,
1101	SVGA3D_DEVCAP_SURFACEFMT_R_S10E5 = 56,
1102	SVGA3D_DEVCAP_SURFACEFMT_R_S23E8 = 57,
1103	SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5 = 58,
1104	SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8 = 59,
1105	SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5 = 60,
1106	SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8 = 61,
1107	SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEXTURES = 63,
1108	SVGA3D_DEVCAP_SURFACEFMT_V16U16 = 65,
1109	SVGA3D_DEVCAP_SURFACEFMT_G16R16 = 66,
1110	SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16 = 67,
1111	SVGA3D_DEVCAP_SURFACEFMT_UYVY = 68,
1112	SVGA3D_DEVCAP_SURFACEFMT_YUY2 = 69,
1113	SVGA3D_DEVCAP_MULTISAMPLE_NONMASKABLESAMPLES = 70,
1114	SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES = 71,
1115	SVGA3D_DEVCAP_ALPHATOCOVERAGE = 72,
1116	SVGA3D_DEVCAP_SUPERSAMPLE = 73,
1117	SVGA3D_DEVCAP_AUTOGENMIPMAPS = 74,
1118	SVGA3D_DEVCAP_SURFACEFMT_NV12 = 75,
1119	SVGA3D_DEVCAP_SURFACEFMT_AYUV = 76,
1120	SVGA3D_DEVCAP_SURFACEFMT_Z_DF16 = 79,
1121	SVGA3D_DEVCAP_SURFACEFMT_Z_DF24 = 80,
1122	SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT = 81,
1123	SVGA3D_DEVCAP_SURFACEFMT_ATI1 = 82,
1124	SVGA3D_DEVCAP_SURFACEFMT_ATI2 = 83,
1125	#endif
1126
1127	LogRel(("VMSVGA3d: Capabilities:\n"));
1128	LogRel(("VMSVGA3d: maxActiveLights=%-2d maxTextures=%-2d\n",
1129	pState->caps.maxActiveLights, pState->caps.maxTextures));
1130	LogRel(("VMSVGA3d: maxClipDistances=%-2d maxColorAttachments=%-2d maxClipDistances=%d\n",
1131	pState->caps.maxClipDistances, pState->caps.maxColorAttachments, pState->caps.maxClipDistances));
1132	LogRel(("VMSVGA3d: maxColorAttachments=%-2d maxTextureAnisotropy=%-2d maxRectangleTextureSize=%d\n",
1133	pState->caps.maxColorAttachments, pState->caps.maxTextureAnisotropy, pState->caps.maxRectangleTextureSize));
1134	LogRel(("VMSVGA3d: maxVertexShaderTemps=%-2d maxVertexShaderInstructions=%d maxFragmentShaderInstructions=%d\n",
1135	pState->caps.maxVertexShaderTemps, pState->caps.maxVertexShaderInstructions, pState->caps.maxFragmentShaderInstructions));
1136	LogRel(("VMSVGA3d: maxFragmentShaderTemps=%d flPointSize={%d.%02u, %d.%02u}\n",
1137	pState->caps.maxFragmentShaderTemps,
1138	(int)pState->caps.flPointSize[0], (int)(pState->caps.flPointSize[0] * 100) % 100,
1139	(int)pState->caps.flPointSize[1], (int)(pState->caps.flPointSize[1] * 100) % 100));
1140	LogRel(("VMSVGA3d: fragmentShaderVersion=%-2d vertexShaderVersion=%-2d\n",
1141	pState->caps.fragmentShaderVersion, pState->caps.vertexShaderVersion));
1142	LogRel(("VMSVGA3d: fS3TCSupported=%-2d fTextureFilterAnisotropicSupported=%d\n",
1143	pState->caps.fS3TCSupported, pState->caps.fTextureFilterAnisotropicSupported));
1144
1145
1146	/* Initialize the shader library. */
1147	pState->ShaderIf.pfnSwitchInitProfile = vmsvga3dShaderIfSwitchInitProfile;
1148	pState->ShaderIf.pfnGetNextExtension = vmsvga3dShaderIfGetNextExtension;
1149	rc = ShaderInitLib(&pState->ShaderIf);
1150	AssertRC(rc);
1151
1152	/* Cleanup */
1153	rc = vmsvga3dBackContextDestroy(pThisCC, 1);
1154	AssertRC(rc);
1155	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
1156	rc = vmsvga3dBackContextDestroy(pThisCC, 2);
1157	AssertRC(rc);
1158	#endif
1159
1160	if ( pState->rsGLVersion < 3.0
1161	&& pState->rsOtherGLVersion < 3.0 /* darwin: legacy profile hack */)
1162	{
1163	LogRel(("VMSVGA3d: unsupported OpenGL version; minimum is 3.0\n"));
1164	return VERR_NOT_IMPLEMENTED;
1165	}
1166
1167	return VINF_SUCCESS;
1168	}
1169
1170	static DECLCALLBACK(int) vmsvga3dBackReset(PVGASTATECC pThisCC)
1171	{
1172	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1173	AssertReturn(pThisCC->svga.p3dState, VERR_NO_MEMORY);
1174
1175	/* Destroy all leftover surfaces. */
1176	for (uint32_t i = 0; i < pState->cSurfaces; i++)
1177	{
1178	if (pState->papSurfaces[i]->id != SVGA3D_INVALID_ID)
1179	vmsvga3dSurfaceDestroy(pThisCC, pState->papSurfaces[i]->id);
1180	}
1181
1182	/* Destroy all leftover contexts. */
1183	for (uint32_t i = 0; i < pState->cContexts; i++)
1184	{
1185	if (pState->papContexts[i]->id != SVGA3D_INVALID_ID)
1186	vmsvga3dBackContextDestroy(pThisCC, pState->papContexts[i]->id);
1187	}
1188
1189	if (pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
1190	vmsvga3dContextDestroyOgl(pThisCC, &pState->SharedCtx, VMSVGA3D_SHARED_CTX_ID);
1191
1192	return VINF_SUCCESS;
1193	}
1194
1195	static DECLCALLBACK(int) vmsvga3dBackTerminate(PVGASTATECC pThisCC)
1196	{
1197	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1198	AssertReturn(pState, VERR_WRONG_ORDER);
1199	int rc;
1200
1201	rc = vmsvga3dBackReset(pThisCC);
1202	AssertRCReturn(rc, rc);
1203
1204	/* Terminate the shader library. */
1205	rc = ShaderDestroyLib();
1206	AssertRC(rc);
1207
1208	#ifdef RT_OS_WINDOWS
1209	/* Terminate the window creation thread. */
1210	rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_EXIT, 0, 0);
1211	AssertRCReturn(rc, rc);
1212
1213	RTSemEventDestroy(pState->WndRequestSem);
1214	#elif defined(RT_OS_DARWIN)
1215
1216	#elif defined(RT_OS_LINUX)
1217	/* signal to the thread that it is supposed to exit */
1218	pState->bTerminate = true;
1219	/* wait for it to terminate */
1220	rc = RTThreadWait(pState->pWindowThread, 10000, NULL);
1221	AssertRC(rc);
1222	XCloseDisplay(pState->display);
1223	#endif
1224
1225	RTStrFree(pState->pszExtensions);
1226	pState->pszExtensions = NULL;
1227	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
1228	RTStrFree(pState->pszOtherExtensions);
1229	#endif
1230	pState->pszOtherExtensions = NULL;
1231
1232	return VINF_SUCCESS;
1233	}
1234
1235
1236	static DECLCALLBACK(void) vmsvga3dBackUpdateHostScreenViewport(PVGASTATECC pThisCC, uint32_t idScreen, VMSVGAVIEWPORT const *pOldViewport)
1237	{
1238	/** @todo Move the visible framebuffer content here, don't wait for the guest to
1239	* redraw it. */
1240
1241	#ifdef RT_OS_DARWIN
1242	RT_NOREF(pOldViewport);
1243	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1244	if ( pState
1245	&& idScreen == 0
1246	&& pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
1247	{
1248	vmsvga3dCocoaViewUpdateViewport(pState->SharedCtx.cocoaView);
1249	}
1250	#else
1251	RT_NOREF(pThisCC, idScreen, pOldViewport);
1252	#endif
1253	}
1254
1255
1256	/**
1257	* Worker for vmsvga3dBackQueryCaps that figures out supported operations for a
1258	* given surface format capability.
1259	*
1260	* @returns Supported/indented operations (SVGA3DFORMAT_OP_XXX).
1261	* @param idx3dCaps The SVGA3D_CAPS_XXX value of the surface format.
1262	*
1263	* @remarks See fromat_cap_table in svga_format.c (mesa/gallium) for a reference
1264	* of implicit guest expectations:
1265	* http://cgit.freedesktop.org/mesa/mesa/tree/src/gallium/drivers/svga/svga_format.c
1266	*/
1267	static uint32_t vmsvga3dGetSurfaceFormatSupport(uint32_t idx3dCaps)
1268	{
1269	uint32_t result = 0;
1270
1271	/** @todo missing:
1272	*
1273	* SVGA3DFORMAT_OP_PIXELSIZE
1274	*/
1275
1276	switch (idx3dCaps)
1277	{
1278	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1279	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1280	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1281	result \|= SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB
1282	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1283	\| SVGA3DFORMAT_OP_DISPLAYMODE /* Should not be set for alpha formats. */
1284	\| SVGA3DFORMAT_OP_3DACCELERATION; /* implies OP_DISPLAYMODE */
1285	break;
1286
1287	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1288	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1289	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1290	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1291	result \|= SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB
1292	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1293	\| SVGA3DFORMAT_OP_SAME_FORMAT_UP_TO_ALPHA_RENDERTARGET;
1294	break;
1295	}
1296
1297	/** @todo check hardware caps! */
1298	switch (idx3dCaps)
1299	{
1300	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1301	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1302	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1303	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1304	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1305	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1306	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1307	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16:
1308	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8:
1309	case SVGA3D_DEVCAP_SURFACEFMT_ALPHA8:
1310	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8:
1311	result \|= SVGA3DFORMAT_OP_TEXTURE
1312	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
1313	\| SVGA3DFORMAT_OP_OFFSCREENPLAIN
1314	\| SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET
1315	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1316	\| SVGA3DFORMAT_OP_CUBETEXTURE
1317	\| SVGA3DFORMAT_OP_SRGBREAD
1318	\| SVGA3DFORMAT_OP_SRGBWRITE;
1319	break;
1320
1321	case SVGA3D_DEVCAP_SURFACEFMT_Z_D16:
1322	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8:
1323	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8:
1324	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF16:
1325	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF24:
1326	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT:
1327	result \|= SVGA3DFORMAT_OP_ZSTENCIL
1328	\| SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH
1329	\| SVGA3DFORMAT_OP_TEXTURE /* Necessary for Ubuntu Unity */;
1330	break;
1331
1332	case SVGA3D_DEVCAP_SURFACEFMT_DXT1:
1333	case SVGA3D_DEVCAP_SURFACEFMT_DXT2:
1334	case SVGA3D_DEVCAP_SURFACEFMT_DXT3:
1335	case SVGA3D_DEVCAP_SURFACEFMT_DXT4:
1336	case SVGA3D_DEVCAP_SURFACEFMT_DXT5:
1337	result \|= SVGA3DFORMAT_OP_TEXTURE
1338	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1339	\| SVGA3DFORMAT_OP_CUBETEXTURE
1340	\| SVGA3DFORMAT_OP_SRGBREAD;
1341	break;
1342
1343	case SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8:
1344	case SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10:
1345	case SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8:
1346	case SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8:
1347	case SVGA3D_DEVCAP_SURFACEFMT_CxV8U8:
1348	break;
1349
1350	case SVGA3D_DEVCAP_SURFACEFMT_R_S10E5:
1351	case SVGA3D_DEVCAP_SURFACEFMT_R_S23E8:
1352	case SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5:
1353	case SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8:
1354	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5:
1355	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8:
1356	result \|= SVGA3DFORMAT_OP_TEXTURE
1357	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1358	\| SVGA3DFORMAT_OP_CUBETEXTURE
1359	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET;
1360	break;
1361
1362	case SVGA3D_DEVCAP_SURFACEFMT_V16U16:
1363	case SVGA3D_DEVCAP_SURFACEFMT_G16R16:
1364	case SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16:
1365	result \|= SVGA3DFORMAT_OP_TEXTURE
1366	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1367	\| SVGA3DFORMAT_OP_CUBETEXTURE
1368	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET;
1369	break;
1370
1371	case SVGA3D_DEVCAP_SURFACEFMT_UYVY:
1372	case SVGA3D_DEVCAP_SURFACEFMT_YUY2:
1373	result \|= SVGA3DFORMAT_OP_OFFSCREENPLAIN
1374	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1375	\| SVGA3DFORMAT_OP_TEXTURE;
1376	break;
1377
1378	case SVGA3D_DEVCAP_SURFACEFMT_NV12:
1379	case SVGA3D_DEVCAP_DEAD10: /* SVGA3D_DEVCAP_SURFACEFMT_AYUV */
1380	break;
1381	}
1382	Log(("CAPS: %s =\n%s\n", vmsvga3dGetCapString(idx3dCaps), vmsvga3dGet3dFormatString(result)));
1383
1384	return result;
1385	}
1386
1387	#if 0 /* unused */
1388	static uint32_t vmsvga3dGetDepthFormatSupport(PVMSVGA3DSTATE pState3D, uint32_t idx3dCaps)
1389	{
1390	RT_NOREF(pState3D, idx3dCaps);
1391
1392	/** @todo test this somehow */
1393	uint32_t result = SVGA3DFORMAT_OP_ZSTENCIL \| SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH;
1394
1395	Log(("CAPS: %s =\n%s\n", vmsvga3dGetCapString(idx3dCaps), vmsvga3dGet3dFormatString(result)));
1396	return result;
1397	}
1398	#endif
1399
1400
1401	static DECLCALLBACK(int) vmsvga3dBackQueryCaps(PVGASTATECC pThisCC, SVGA3dDevCapIndex idx3dCaps, uint32_t *pu32Val)
1402	{
1403	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1404	AssertReturn(pState, VERR_NO_MEMORY);
1405	int rc = VINF_SUCCESS;
1406
1407	*pu32Val = 0;
1408
1409	/*
1410	* The capabilities access by current (2015-03-01) linux sources (gallium,
1411	* vmwgfx, xorg-video-vmware) are annotated, caps without xref annotations
1412	* aren't access.
1413	*/
1414
1415	switch (idx3dCaps)
1416	{
1417	/* Linux: vmwgfx_fifo.c in kmod; only used with SVGA_CAP_GBOBJECTS. */
1418	case SVGA3D_DEVCAP_3D:
1419	pu32Val = 1; / boolean? */
1420	break;
1421
1422	case SVGA3D_DEVCAP_MAX_LIGHTS:
1423	*pu32Val = pState->caps.maxActiveLights;
1424	break;
1425
1426	case SVGA3D_DEVCAP_MAX_TEXTURES:
1427	*pu32Val = pState->caps.maxTextures;
1428	break;
1429
1430	case SVGA3D_DEVCAP_MAX_CLIP_PLANES:
1431	*pu32Val = pState->caps.maxClipDistances;
1432	break;
1433
1434	/* Linux: svga_screen.c in gallium; 3.0 or later required. */
1435	case SVGA3D_DEVCAP_VERTEX_SHADER_VERSION:
1436	*pu32Val = pState->caps.vertexShaderVersion;
1437	break;
1438
1439	case SVGA3D_DEVCAP_VERTEX_SHADER:
1440	/* boolean? */
1441	*pu32Val = (pState->caps.vertexShaderVersion != SVGA3DVSVERSION_NONE);
1442	break;
1443
1444	/* Linux: svga_screen.c in gallium; 3.0 or later required. */
1445	case SVGA3D_DEVCAP_FRAGMENT_SHADER_VERSION:
1446	*pu32Val = pState->caps.fragmentShaderVersion;
1447	break;
1448
1449	case SVGA3D_DEVCAP_FRAGMENT_SHADER:
1450	/* boolean? */
1451	*pu32Val = (pState->caps.fragmentShaderVersion != SVGA3DPSVERSION_NONE);
1452	break;
1453
1454	case SVGA3D_DEVCAP_S23E8_TEXTURES:
1455	case SVGA3D_DEVCAP_S10E5_TEXTURES:
1456	/* Must be obsolete by now; surface format caps specify the same thing. */
1457	rc = VERR_INVALID_PARAMETER;
1458	break;
1459
1460	case SVGA3D_DEVCAP_MAX_FIXED_VERTEXBLEND:
1461	break;
1462
1463	/*
1464	* 2. The BUFFER_FORMAT capabilities are deprecated, and they always
1465	* return TRUE. Even on physical hardware that does not support
1466	* these formats natively, the SVGA3D device will provide an emulation
1467	* which should be invisible to the guest OS.
1468	*/
1469	case SVGA3D_DEVCAP_D16_BUFFER_FORMAT:
1470	case SVGA3D_DEVCAP_D24S8_BUFFER_FORMAT:
1471	case SVGA3D_DEVCAP_D24X8_BUFFER_FORMAT:
1472	*pu32Val = 1;
1473	break;
1474
1475	case SVGA3D_DEVCAP_QUERY_TYPES:
1476	break;
1477
1478	case SVGA3D_DEVCAP_TEXTURE_GRADIENT_SAMPLING:
1479	break;
1480
1481	/* Linux: svga_screen.c in gallium; capped at 80.0, default 1.0. */
1482	case SVGA3D_DEVCAP_MAX_POINT_SIZE:
1483	AssertCompile(sizeof(uint32_t) == sizeof(float));
1484	(float )pu32Val = pState->caps.flPointSize[1];
1485	break;
1486
1487	case SVGA3D_DEVCAP_MAX_SHADER_TEXTURES:
1488	/** @todo ?? */
1489	rc = VERR_INVALID_PARAMETER;
1490	break;
1491
1492	/* Linux: svga_screen.c in gallium (for PIPE_CAP_MAX_TEXTURE_2D_LEVELS); have default if missing. */
1493	case SVGA3D_DEVCAP_MAX_TEXTURE_WIDTH:
1494	case SVGA3D_DEVCAP_MAX_TEXTURE_HEIGHT:
1495	*pu32Val = pState->caps.maxRectangleTextureSize;
1496	break;
1497
1498	/* Linux: svga_screen.c in gallium (for PIPE_CAP_MAX_TEXTURE_3D_LEVELS); have default if missing. */
1499	case SVGA3D_DEVCAP_MAX_VOLUME_EXTENT:
1500	//*pu32Val = pCaps->MaxVolumeExtent;
1501	*pu32Val = 256;
1502	break;
1503
1504	case SVGA3D_DEVCAP_MAX_TEXTURE_REPEAT:
1505	pu32Val = 32768; / hardcoded in Wine */
1506	break;
1507
1508	case SVGA3D_DEVCAP_MAX_TEXTURE_ASPECT_RATIO:
1509	//*pu32Val = pCaps->MaxTextureAspectRatio;
1510	break;
1511
1512	/* Linux: svga_screen.c in gallium (for PIPE_CAPF_MAX_TEXTURE_ANISOTROPY); defaults to 4.0. */
1513	case SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY:
1514	*pu32Val = pState->caps.maxTextureAnisotropy;
1515	break;
1516
1517	case SVGA3D_DEVCAP_MAX_PRIMITIVE_COUNT:
1518	case SVGA3D_DEVCAP_MAX_VERTEX_INDEX:
1519	pu32Val = 0xFFFFF; / hardcoded in Wine */
1520	break;
1521
1522	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_VERTEX/PIPE_SHADER_CAP_MAX_INSTRUCTIONS); defaults to 512. */
1523	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_INSTRUCTIONS:
1524	*pu32Val = pState->caps.maxVertexShaderInstructions;
1525	break;
1526
1527	case SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_INSTRUCTIONS:
1528	*pu32Val = pState->caps.maxFragmentShaderInstructions;
1529	break;
1530
1531	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_VERTEX/PIPE_SHADER_CAP_MAX_TEMPS); defaults to 32. */
1532	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS:
1533	*pu32Val = pState->caps.maxVertexShaderTemps;
1534	break;
1535
1536	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_FRAGMENT/PIPE_SHADER_CAP_MAX_TEMPS); defaults to 32. */
1537	case SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS:
1538	*pu32Val = pState->caps.maxFragmentShaderTemps;
1539	break;
1540
1541	case SVGA3D_DEVCAP_TEXTURE_OPS:
1542	break;
1543
1544	case SVGA3D_DEVCAP_DEAD4: /* SVGA3D_DEVCAP_MULTISAMPLE_NONMASKABLESAMPLES */
1545	break;
1546
1547	case SVGA3D_DEVCAP_DEAD5: /* SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES */
1548	break;
1549
1550	case SVGA3D_DEVCAP_DEAD7: /* SVGA3D_DEVCAP_ALPHATOCOVERAGE */
1551	break;
1552
1553	case SVGA3D_DEVCAP_DEAD6: /* SVGA3D_DEVCAP_SUPERSAMPLE */
1554	break;
1555
1556	case SVGA3D_DEVCAP_AUTOGENMIPMAPS:
1557	//*pu32Val = !!(pCaps->Caps2 & D3DCAPS2_CANAUTOGENMIPMAP);
1558	break;
1559
1560	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEXTURES:
1561	break;
1562
1563	case SVGA3D_DEVCAP_MAX_RENDER_TARGETS: /** @todo same thing? */
1564	case SVGA3D_DEVCAP_MAX_SIMULTANEOUS_RENDER_TARGETS:
1565	*pu32Val = pState->caps.maxColorAttachments;
1566	break;
1567
1568	/*
1569	* This is the maximum number of SVGA context IDs that the guest
1570	* can define using SVGA_3D_CMD_CONTEXT_DEFINE.
1571	*/
1572	case SVGA3D_DEVCAP_MAX_CONTEXT_IDS:
1573	*pu32Val = SVGA3D_MAX_CONTEXT_IDS;
1574	break;
1575
1576	/*
1577	* This is the maximum number of SVGA surface IDs that the guest
1578	* can define using SVGA_3D_CMD_SURFACE_DEFINE*.
1579	*/
1580	case SVGA3D_DEVCAP_MAX_SURFACE_IDS:
1581	*pu32Val = SVGA3D_MAX_SURFACE_IDS;
1582	break;
1583
1584	#if 0 /* Appeared more recently, not yet implemented. */
1585	/* Linux: svga_screen.c in gallium; defaults to FALSE. */
1586	case SVGA3D_DEVCAP_LINE_AA:
1587	break;
1588	/* Linux: svga_screen.c in gallium; defaults to FALSE. */
1589	case SVGA3D_DEVCAP_LINE_STIPPLE:
1590	break;
1591	/* Linux: svga_screen.c in gallium; defaults to 1.0. */
1592	case SVGA3D_DEVCAP_MAX_LINE_WIDTH:
1593	break;
1594	/* Linux: svga_screen.c in gallium; defaults to 1.0. */
1595	case SVGA3D_DEVCAP_MAX_AA_LINE_WIDTH:
1596	break;
1597	#endif
1598
1599	/*
1600	* Supported surface formats.
1601	* Linux: svga_format.c in gallium, format_cap_table defines implicit expectations.
1602	*/
1603	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1604	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1605	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1606	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1607	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1608	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1609	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1610	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16:
1611	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8:
1612	case SVGA3D_DEVCAP_SURFACEFMT_ALPHA8:
1613	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8:
1614	case SVGA3D_DEVCAP_SURFACEFMT_Z_D16:
1615	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8:
1616	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8:
1617	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF16:
1618	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF24:
1619	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT:
1620	case SVGA3D_DEVCAP_SURFACEFMT_DXT1:
1621	*pu32Val = vmsvga3dGetSurfaceFormatSupport(idx3dCaps);
1622	break;
1623
1624	case SVGA3D_DEVCAP_SURFACEFMT_DXT2:
1625	case SVGA3D_DEVCAP_SURFACEFMT_DXT3:
1626	case SVGA3D_DEVCAP_SURFACEFMT_DXT4:
1627	case SVGA3D_DEVCAP_SURFACEFMT_DXT5:
1628	case SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8:
1629	case SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10:
1630	case SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8:
1631	case SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8:
1632	case SVGA3D_DEVCAP_SURFACEFMT_CxV8U8:
1633	case SVGA3D_DEVCAP_SURFACEFMT_R_S10E5:
1634	case SVGA3D_DEVCAP_SURFACEFMT_R_S23E8:
1635	case SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5:
1636	case SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8:
1637	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5:
1638	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8:
1639	case SVGA3D_DEVCAP_SURFACEFMT_V16U16:
1640	case SVGA3D_DEVCAP_SURFACEFMT_G16R16:
1641	case SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16:
1642	case SVGA3D_DEVCAP_SURFACEFMT_UYVY:
1643	case SVGA3D_DEVCAP_SURFACEFMT_YUY2:
1644	case SVGA3D_DEVCAP_SURFACEFMT_NV12:
1645	case SVGA3D_DEVCAP_DEAD10: /* SVGA3D_DEVCAP_SURFACEFMT_AYUV */
1646	*pu32Val = vmsvga3dGetSurfaceFormatSupport(idx3dCaps);
1647	break;
1648
1649	/* Linux: Not referenced in current sources. */
1650	case SVGA3D_DEVCAP_SURFACEFMT_ATI1:
1651	case SVGA3D_DEVCAP_SURFACEFMT_ATI2:
1652	Log(("CAPS: Unknown CAP %s\n", vmsvga3dGetCapString(idx3dCaps)));
1653	rc = VERR_INVALID_PARAMETER;
1654	*pu32Val = 0;
1655	break;
1656
1657	default:
1658	Log(("CAPS: Unexpected CAP %d\n", idx3dCaps));
1659	rc = VERR_INVALID_PARAMETER;
1660	break;
1661	}
1662
1663	Log(("CAPS: %s - %x\n", vmsvga3dGetCapString(idx3dCaps), *pu32Val));
1664	return rc;
1665	}
1666
1667	/**
1668	* Convert SVGA format value to its OpenGL equivalent
1669	*
1670	* @remarks Clues to be had in format_texture_info table (wined3d/utils.c) with
1671	* help from wined3dformat_from_d3dformat().
1672	*/
1673	void vmsvga3dSurfaceFormat2OGL(PVMSVGA3DSURFACE pSurface, SVGA3dSurfaceFormat format)
1674	{
1675	#if 0
1676	#define AssertTestFmt(f) AssertMsgFailed(("Test me - " #f "\n"))
1677	#else
1678	#define AssertTestFmt(f) do {} while(0)
1679	#endif
1680	/* Init cbBlockGL for non-emulated formats. */
1681	pSurface->cbBlockGL = pSurface->cbBlock;
1682
1683	switch (format)
1684	{
1685	case SVGA3D_X8R8G8B8: /* D3DFMT_X8R8G8B8 - WINED3DFMT_B8G8R8X8_UNORM */
1686	pSurface->internalFormatGL = GL_RGB8;
1687	pSurface->formatGL = GL_BGRA;
1688	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1689	break;
1690	case SVGA3D_A8R8G8B8: /* D3DFMT_A8R8G8B8 - WINED3DFMT_B8G8R8A8_UNORM */
1691	pSurface->internalFormatGL = GL_RGBA8;
1692	pSurface->formatGL = GL_BGRA;
1693	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1694	break;
1695	case SVGA3D_R5G6B5: /* D3DFMT_R5G6B5 - WINED3DFMT_B5G6R5_UNORM */
1696	pSurface->internalFormatGL = GL_RGB5;
1697	pSurface->formatGL = GL_RGB;
1698	pSurface->typeGL = GL_UNSIGNED_SHORT_5_6_5;
1699	AssertTestFmt(SVGA3D_R5G6B5);
1700	break;
1701	case SVGA3D_X1R5G5B5: /* D3DFMT_X1R5G5B5 - WINED3DFMT_B5G5R5X1_UNORM */
1702	pSurface->internalFormatGL = GL_RGB5;
1703	pSurface->formatGL = GL_BGRA;
1704	pSurface->typeGL = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1705	AssertTestFmt(SVGA3D_X1R5G5B5);
1706	break;
1707	case SVGA3D_A1R5G5B5: /* D3DFMT_A1R5G5B5 - WINED3DFMT_B5G5R5A1_UNORM */
1708	pSurface->internalFormatGL = GL_RGB5_A1;
1709	pSurface->formatGL = GL_BGRA;
1710	pSurface->typeGL = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1711	AssertTestFmt(SVGA3D_A1R5G5B5);
1712	break;
1713	case SVGA3D_A4R4G4B4: /* D3DFMT_A4R4G4B4 - WINED3DFMT_B4G4R4A4_UNORM */
1714	pSurface->internalFormatGL = GL_RGBA4;
1715	pSurface->formatGL = GL_BGRA;
1716	pSurface->typeGL = GL_UNSIGNED_SHORT_4_4_4_4_REV;
1717	AssertTestFmt(SVGA3D_A4R4G4B4);
1718	break;
1719
1720	case SVGA3D_R8G8B8A8_UNORM:
1721	pSurface->internalFormatGL = GL_RGBA8;
1722	pSurface->formatGL = GL_RGBA;
1723	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1724	break;
1725
1726	case SVGA3D_Z_D32: /* D3DFMT_D32 - WINED3DFMT_D32_UNORM */
1727	pSurface->internalFormatGL = GL_DEPTH_COMPONENT32;
1728	pSurface->formatGL = GL_DEPTH_COMPONENT;
1729	pSurface->typeGL = GL_UNSIGNED_INT;
1730	break;
1731	case SVGA3D_Z_D16: /* D3DFMT_D16 - WINED3DFMT_D16_UNORM */
1732	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16; /** @todo Wine suggests GL_DEPTH_COMPONENT24. */
1733	pSurface->formatGL = GL_DEPTH_COMPONENT;
1734	pSurface->typeGL = GL_UNSIGNED_SHORT;
1735	AssertTestFmt(SVGA3D_Z_D16);
1736	break;
1737	case SVGA3D_Z_D24S8: /* D3DFMT_D24S8 - WINED3DFMT_D24_UNORM_S8_UINT */
1738	pSurface->internalFormatGL = GL_DEPTH24_STENCIL8;
1739	pSurface->formatGL = GL_DEPTH_STENCIL;
1740	pSurface->typeGL = GL_UNSIGNED_INT_24_8;
1741	break;
1742	case SVGA3D_Z_D15S1: /* D3DFMT_D15S1 - WINED3DFMT_S1_UINT_D15_UNORM */
1743	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16; /** @todo ??? */
1744	pSurface->formatGL = GL_DEPTH_STENCIL;
1745	pSurface->typeGL = GL_UNSIGNED_SHORT;
1746	/** @todo Wine sources hints at no hw support for this, so test this one! */
1747	AssertTestFmt(SVGA3D_Z_D15S1);
1748	break;
1749	case SVGA3D_Z_D24X8: /* D3DFMT_D24X8 - WINED3DFMT_X8D24_UNORM */
1750	pSurface->internalFormatGL = GL_DEPTH_COMPONENT24;
1751	pSurface->formatGL = GL_DEPTH_COMPONENT;
1752	pSurface->typeGL = GL_UNSIGNED_INT;
1753	AssertTestFmt(SVGA3D_Z_D24X8);
1754	break;
1755
1756	/* Advanced D3D9 depth formats. */
1757	case SVGA3D_Z_DF16: /* D3DFMT_DF16? - not supported */
1758	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16;
1759	pSurface->formatGL = GL_DEPTH_COMPONENT;
1760	pSurface->typeGL = GL_HALF_FLOAT;
1761	break;
1762
1763	case SVGA3D_Z_DF24: /* D3DFMT_DF24? - not supported */
1764	pSurface->internalFormatGL = GL_DEPTH_COMPONENT24;
1765	pSurface->formatGL = GL_DEPTH_COMPONENT;
1766	pSurface->typeGL = GL_FLOAT; /* ??? */
1767	break;
1768
1769	case SVGA3D_Z_D24S8_INT: /* D3DFMT_D24S8 */
1770	pSurface->internalFormatGL = GL_DEPTH24_STENCIL8;
1771	pSurface->formatGL = GL_DEPTH_STENCIL;
1772	pSurface->typeGL = GL_UNSIGNED_INT_24_8;
1773	break;
1774
1775	case SVGA3D_DXT1: /* D3DFMT_DXT1 - WINED3DFMT_DXT1 */
1776	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
1777	pSurface->formatGL = GL_RGBA; /* not used */
1778	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1779	break;
1780
1781	case SVGA3D_DXT2: /* D3DFMT_DXT2 */
1782	/* "DXT2 and DXT3 are the same from an API perspective." */
1783	RT_FALL_THRU();
1784	case SVGA3D_DXT3: /* D3DFMT_DXT3 - WINED3DFMT_DXT3 */
1785	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
1786	pSurface->formatGL = GL_RGBA; /* not used */
1787	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1788	break;
1789
1790	case SVGA3D_DXT4: /* D3DFMT_DXT4 */
1791	/* "DXT4 and DXT5 are the same from an API perspective." */
1792	RT_FALL_THRU();
1793	case SVGA3D_DXT5: /* D3DFMT_DXT5 - WINED3DFMT_DXT5 */
1794	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
1795	pSurface->formatGL = GL_RGBA; /* not used */
1796	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1797	break;
1798
1799	case SVGA3D_LUMINANCE8: /* D3DFMT_? - ? */
1800	pSurface->internalFormatGL = GL_LUMINANCE8_EXT;
1801	pSurface->formatGL = GL_LUMINANCE;
1802	pSurface->typeGL = GL_UNSIGNED_BYTE;
1803	break;
1804
1805	case SVGA3D_LUMINANCE16: /* D3DFMT_? - ? */
1806	pSurface->internalFormatGL = GL_LUMINANCE16_EXT;
1807	pSurface->formatGL = GL_LUMINANCE;
1808	pSurface->typeGL = GL_UNSIGNED_SHORT;
1809	break;
1810
1811	case SVGA3D_LUMINANCE4_ALPHA4: /* D3DFMT_? - ? */
1812	pSurface->internalFormatGL = GL_LUMINANCE4_ALPHA4_EXT;
1813	pSurface->formatGL = GL_LUMINANCE_ALPHA;
1814	pSurface->typeGL = GL_UNSIGNED_BYTE;
1815	break;
1816
1817	case SVGA3D_LUMINANCE8_ALPHA8: /* D3DFMT_? - ? */
1818	pSurface->internalFormatGL = GL_LUMINANCE8_ALPHA8_EXT;
1819	pSurface->formatGL = GL_LUMINANCE_ALPHA;
1820	pSurface->typeGL = GL_UNSIGNED_BYTE; /* unsigned_short causes issues even though this type should be 16-bit */
1821	break;
1822
1823	case SVGA3D_ALPHA8: /* D3DFMT_A8? - WINED3DFMT_A8_UNORM? */
1824	pSurface->internalFormatGL = GL_ALPHA8_EXT;
1825	pSurface->formatGL = GL_ALPHA;
1826	pSurface->typeGL = GL_UNSIGNED_BYTE;
1827	break;
1828
1829	#if 0
1830
1831	/* Bump-map formats */
1832	case SVGA3D_BUMPU8V8:
1833	return D3DFMT_V8U8;
1834	case SVGA3D_BUMPL6V5U5:
1835	return D3DFMT_L6V5U5;
1836	case SVGA3D_BUMPX8L8V8U8:
1837	return D3DFMT_X8L8V8U8;
1838	case SVGA3D_FORMAT_DEAD1:
1839	/* No corresponding D3D9 equivalent. */
1840	AssertFailedReturn(D3DFMT_UNKNOWN);
1841	/* signed bump-map formats */
1842	case SVGA3D_V8U8:
1843	return D3DFMT_V8U8;
1844	case SVGA3D_Q8W8V8U8:
1845	return D3DFMT_Q8W8V8U8;
1846	case SVGA3D_CxV8U8:
1847	return D3DFMT_CxV8U8;
1848	/* mixed bump-map formats */
1849	case SVGA3D_X8L8V8U8:
1850	return D3DFMT_X8L8V8U8;
1851	case SVGA3D_A2W10V10U10:
1852	return D3DFMT_A2W10V10U10;
1853	#endif
1854
1855	case SVGA3D_ARGB_S10E5: /* 16-bit floating-point ARGB / / D3DFMT_A16B16G16R16F - WINED3DFMT_R16G16B16A16_FLOAT */
1856	pSurface->internalFormatGL = GL_RGBA16F;
1857	pSurface->formatGL = GL_RGBA;
1858	#if 0 /* bird: wine uses half float, sounds correct to me... */
1859	pSurface->typeGL = GL_FLOAT;
1860	#else
1861	pSurface->typeGL = GL_HALF_FLOAT;
1862	AssertTestFmt(SVGA3D_ARGB_S10E5);
1863	#endif
1864	break;
1865
1866	case SVGA3D_ARGB_S23E8: /* 32-bit floating-point ARGB / / D3DFMT_A32B32G32R32F - WINED3DFMT_R32G32B32A32_FLOAT */
1867	pSurface->internalFormatGL = GL_RGBA32F;
1868	pSurface->formatGL = GL_RGBA;
1869	pSurface->typeGL = GL_FLOAT; /* ?? - same as wine, so probably correct */
1870	break;
1871
1872	case SVGA3D_A2R10G10B10: /* D3DFMT_A2R10G10B10 - WINED3DFMT_B10G10R10A2_UNORM */
1873	pSurface->internalFormatGL = GL_RGB10_A2; /* ?? - same as wine, so probably correct */
1874	#if 0 /* bird: Wine uses GL_BGRA instead of GL_RGBA. */
1875	pSurface->formatGL = GL_RGBA;
1876	#else
1877	pSurface->formatGL = GL_BGRA;
1878	#endif
1879	pSurface->typeGL = GL_UNSIGNED_INT;
1880	AssertTestFmt(SVGA3D_A2R10G10B10);
1881	break;
1882
1883
1884	/* Single- and dual-component floating point formats */
1885	case SVGA3D_R_S10E5: /* D3DFMT_R16F - WINED3DFMT_R16_FLOAT */
1886	pSurface->internalFormatGL = GL_R16F;
1887	pSurface->formatGL = GL_RED;
1888	#if 0 /* bird: wine uses half float, sounds correct to me... */
1889	pSurface->typeGL = GL_FLOAT;
1890	#else
1891	pSurface->typeGL = GL_HALF_FLOAT;
1892	AssertTestFmt(SVGA3D_R_S10E5);
1893	#endif
1894	break;
1895	case SVGA3D_R_S23E8: /* D3DFMT_R32F - WINED3DFMT_R32_FLOAT */
1896	pSurface->internalFormatGL = GL_R32F;
1897	pSurface->formatGL = GL_RED;
1898	pSurface->typeGL = GL_FLOAT;
1899	break;
1900	case SVGA3D_RG_S10E5: /* D3DFMT_G16R16F - WINED3DFMT_R16G16_FLOAT */
1901	pSurface->internalFormatGL = GL_RG16F;
1902	pSurface->formatGL = GL_RG;
1903	#if 0 /* bird: wine uses half float, sounds correct to me... */
1904	pSurface->typeGL = GL_FLOAT;
1905	#else
1906	pSurface->typeGL = GL_HALF_FLOAT;
1907	AssertTestFmt(SVGA3D_RG_S10E5);
1908	#endif
1909	break;
1910	case SVGA3D_RG_S23E8: /* D3DFMT_G32R32F - WINED3DFMT_R32G32_FLOAT */
1911	pSurface->internalFormatGL = GL_RG32F;
1912	pSurface->formatGL = GL_RG;
1913	pSurface->typeGL = GL_FLOAT;
1914	break;
1915
1916	/*
1917	* Any surface can be used as a buffer object, but SVGA3D_BUFFER is
1918	* the most efficient format to use when creating new surfaces
1919	* expressly for index or vertex data.
1920	*/
1921	case SVGA3D_BUFFER:
1922	pSurface->internalFormatGL = -1;
1923	pSurface->formatGL = -1;
1924	pSurface->typeGL = -1;
1925	break;
1926
1927	#if 0
1928	return D3DFMT_UNKNOWN;
1929
1930	case SVGA3D_V16U16:
1931	return D3DFMT_V16U16;
1932	#endif
1933
1934	case SVGA3D_G16R16: /* D3DFMT_G16R16 - WINED3DFMT_R16G16_UNORM */
1935	pSurface->internalFormatGL = GL_RG16;
1936	pSurface->formatGL = GL_RG;
1937	#if 0 /* bird: Wine uses GL_UNSIGNED_SHORT here. */
1938	pSurface->typeGL = GL_UNSIGNED_INT;
1939	#else
1940	pSurface->typeGL = GL_UNSIGNED_SHORT;
1941	AssertTestFmt(SVGA3D_G16R16);
1942	#endif
1943	break;
1944
1945	case SVGA3D_A16B16G16R16: /* D3DFMT_A16B16G16R16 - WINED3DFMT_R16G16B16A16_UNORM */
1946	pSurface->internalFormatGL = GL_RGBA16;
1947	pSurface->formatGL = GL_RGBA;
1948	#if 0 /* bird: Wine uses GL_UNSIGNED_SHORT here. */
1949	pSurface->typeGL = GL_UNSIGNED_INT; /* ??? */
1950	#else
1951	pSurface->typeGL = GL_UNSIGNED_SHORT;
1952	AssertTestFmt(SVGA3D_A16B16G16R16);
1953	#endif
1954	break;
1955
1956	case SVGA3D_R8G8B8A8_SNORM:
1957	pSurface->internalFormatGL = GL_RGB8;
1958	pSurface->formatGL = GL_BGRA;
1959	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1960	AssertTestFmt(SVGA3D_R8G8B8A8_SNORM);
1961	break;
1962	case SVGA3D_R16G16_UNORM:
1963	pSurface->internalFormatGL = GL_RG16;
1964	pSurface->formatGL = GL_RG;
1965	pSurface->typeGL = GL_UNSIGNED_SHORT;
1966	AssertTestFmt(SVGA3D_R16G16_UNORM);
1967	break;
1968
1969	/* Packed Video formats */
1970	case SVGA3D_UYVY:
1971	case SVGA3D_YUY2:
1972	/* Use a BRGA texture to hold the data and convert it to an actual BGRA. */
1973	pSurface->fEmulated = true;
1974	pSurface->internalFormatGL = GL_RGBA8;
1975	pSurface->formatGL = GL_BGRA;
1976	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1977	pSurface->cbBlockGL = 4 * pSurface->cxBlock * pSurface->cyBlock;
1978	break;
1979
1980	#if 0
1981	/* Planar video formats */
1982	case SVGA3D_NV12:
1983	return (D3DFORMAT)MAKEFOURCC('N', 'V', '1', '2');
1984
1985	/* Video format with alpha */
1986	case SVGA3D_FORMAT_DEAD2: /* Old SVGA3D_AYUV */
1987
1988	case SVGA3D_ATI1:
1989	case SVGA3D_ATI2:
1990	/* Unknown; only in DX10 & 11 */
1991	break;
1992	#endif
1993	default:
1994	AssertMsgFailed(("Unsupported format %d\n", format));
1995	break;
1996	}
1997	#undef AssertTestFmt
1998	}
1999
2000
2001	#if 0
2002	/**
2003	* Convert SVGA multi sample count value to its D3D equivalent
2004	*/
2005	D3DMULTISAMPLE_TYPE vmsvga3dMultipeSampleCount2D3D(uint32_t multisampleCount)
2006	{
2007	AssertCompile(D3DMULTISAMPLE_2_SAMPLES == 2);
2008	AssertCompile(D3DMULTISAMPLE_16_SAMPLES == 16);
2009
2010	if (multisampleCount > 16)
2011	return D3DMULTISAMPLE_NONE;
2012
2013	/** @todo exact same mapping as d3d? */
2014	return (D3DMULTISAMPLE_TYPE)multisampleCount;
2015	}
2016	#endif
2017
2018	/**
2019	* Destroy backend specific surface bits (part of SVGA_3D_CMD_SURFACE_DESTROY).
2020	*
2021	* @param pThisCC The device state.
2022	* @param pSurface The surface being destroyed.
2023	*/
2024	static DECLCALLBACK(void) vmsvga3dBackSurfaceDestroy(PVGASTATECC pThisCC, PVMSVGA3DSURFACE pSurface)
2025	{
2026	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2027	AssertReturnVoid(pState);
2028
2029	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
2030	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2031
2032	switch (pSurface->enmOGLResType)
2033	{
2034	case VMSVGA3D_OGLRESTYPE_BUFFER:
2035	Assert(pSurface->oglId.buffer != OPENGL_INVALID_ID);
2036	pState->ext.glDeleteBuffers(1, &pSurface->oglId.buffer);
2037	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2038	break;
2039
2040	case VMSVGA3D_OGLRESTYPE_TEXTURE:
2041	Assert(pSurface->oglId.texture != OPENGL_INVALID_ID);
2042	glDeleteTextures(1, &pSurface->oglId.texture);
2043	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2044	if (pSurface->fEmulated)
2045	{
2046	if (pSurface->idEmulated)
2047	{
2048	glDeleteTextures(1, &pSurface->idEmulated);
2049	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2050	}
2051	}
2052	else
2053	{
2054	Assert(!pSurface->idEmulated);
2055	}
2056	break;
2057
2058	case VMSVGA3D_OGLRESTYPE_RENDERBUFFER:
2059	Assert(pSurface->oglId.renderbuffer != OPENGL_INVALID_ID);
2060	pState->ext.glDeleteRenderbuffers(1, &pSurface->oglId.renderbuffer);
2061	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2062	break;
2063
2064	default:
2065	AssertMsg(!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface),
2066	("hint=%#x, type=%d\n",
2067	(pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK), pSurface->enmOGLResType));
2068	break;
2069	}
2070	}
2071
2072
2073	static DECLCALLBACK(int) vmsvga3dBackSurfaceCopy(PVGASTATECC pThisCC, SVGA3dSurfaceImageId dest, SVGA3dSurfaceImageId src,
2074	uint32_t cCopyBoxes, SVGA3dCopyBox *pBox)
2075	{
2076	int rc;
2077
2078	LogFunc(("Copy %d boxes from sid=%u face=%u mipmap=%u to sid=%u face=%u mipmap=%u\n",
2079	cCopyBoxes, src.sid, src.face, src.mipmap, dest.sid, dest.face, dest.mipmap));
2080
2081	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2082	AssertReturn(pState, VERR_INVALID_STATE);
2083
2084	PVMSVGA3DSURFACE pSurfaceSrc;
2085	rc = vmsvga3dSurfaceFromSid(pState, src.sid, &pSurfaceSrc);
2086	AssertRCReturn(rc, rc);
2087
2088	PVMSVGA3DSURFACE pSurfaceDst;
2089	rc = vmsvga3dSurfaceFromSid(pState, dest.sid, &pSurfaceDst);
2090	AssertRCReturn(rc, rc);
2091
2092	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurfaceSrc))
2093	{
2094	/* The source surface is still in memory. */
2095	PVMSVGA3DMIPMAPLEVEL pMipmapLevelSrc;
2096	rc = vmsvga3dMipmapLevel(pSurfaceSrc, src.face, src.mipmap, &pMipmapLevelSrc);
2097	AssertRCReturn(rc, rc);
2098
2099	PVMSVGA3DMIPMAPLEVEL pMipmapLevelDst;
2100	rc = vmsvga3dMipmapLevel(pSurfaceDst, dest.face, dest.mipmap, &pMipmapLevelDst);
2101	AssertRCReturn(rc, rc);
2102
2103	/* The copy operation is performed on the shared context. */
2104	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
2105	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2106
2107	/* Use glTexSubImage to upload the data to the destination texture.
2108	* The latter must be an OpenGL texture.
2109	*/
2110	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurfaceDst))
2111	{
2112	LogFunc(("dest sid=%u type=0x%x format=%d -> create texture\n", dest.sid, pSurfaceDst->surfaceFlags, pSurfaceDst->format));
2113	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, pContext->id, pSurfaceDst);
2114	AssertRCReturn(rc, rc);
2115	}
2116
2117	GLenum target;
2118	if (pSurfaceDst->targetGL == GL_TEXTURE_CUBE_MAP)
2119	target = vmsvga3dCubemapFaceFromIndex(dest.face);
2120	else
2121	{
2122	AssertMsg(pSurfaceDst->targetGL == GL_TEXTURE_2D, ("Test %#x\n", pSurfaceDst->targetGL));
2123	target = pSurfaceDst->targetGL;
2124	}
2125
2126	/* Save the unpacking parameters and set what we need here. */
2127	VMSVGAPACKPARAMS SavedParams;
2128	vmsvga3dOglSetUnpackParams(pState, pContext,
2129	pMipmapLevelSrc->mipmapSize.width,
2130	target == GL_TEXTURE_3D ? pMipmapLevelSrc->mipmapSize.height : 0,
2131	&SavedParams);
2132
2133	glBindTexture(pSurfaceDst->targetGL, pSurfaceDst->oglId.texture);
2134	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2135
2136	for (uint32_t i = 0; i < cCopyBoxes; ++i)
2137	{
2138	SVGA3dCopyBox clipBox = pBox[i];
2139	vmsvgaR3ClipCopyBox(&pMipmapLevelSrc->mipmapSize, &pMipmapLevelDst->mipmapSize, &clipBox);
2140	if ( !clipBox.w
2141	\|\| !clipBox.h
2142	\|\| !clipBox.d)
2143	{
2144	LogFunc(("Skipped empty box.\n"));
2145	continue;
2146	}
2147
2148	LogFunc(("copy box %d,%d,%d %dx%d to %d,%d,%d\n",
2149	clipBox.srcx, clipBox.srcy, clipBox.srcz, clipBox.w, clipBox.h, clipBox.x, clipBox.y, clipBox.z));
2150
2151	uint32_t const u32BlockX = clipBox.srcx / pSurfaceSrc->cxBlock;
2152	uint32_t const u32BlockY = clipBox.srcy / pSurfaceSrc->cyBlock;
2153	uint32_t const u32BlockZ = clipBox.srcz;
2154	Assert(u32BlockX * pSurfaceSrc->cxBlock == clipBox.srcx);
2155	Assert(u32BlockY * pSurfaceSrc->cyBlock == clipBox.srcy);
2156
2157	uint8_t const pSrcBits = (uint8_t )pMipmapLevelSrc->pSurfaceData
2158	+ pMipmapLevelSrc->cbSurfacePlane * u32BlockZ
2159	+ pMipmapLevelSrc->cbSurfacePitch * u32BlockY
2160	+ pSurfaceSrc->cbBlock * u32BlockX;
2161
2162	if (target == GL_TEXTURE_3D)
2163	{
2164	if ( pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2165	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2166	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2167	{
2168	uint32_t const cBlocksX = (clipBox.w + pSurfaceSrc->cxBlock - 1) / pSurfaceSrc->cxBlock;
2169	uint32_t const cBlocksY = (clipBox.h + pSurfaceSrc->cyBlock - 1) / pSurfaceSrc->cyBlock;
2170	uint32_t const imageSize = cBlocksX * cBlocksY * clipBox.d * pSurfaceSrc->cbBlock;
2171	pState->ext.glCompressedTexSubImage3D(target, dest.mipmap,
2172	clipBox.x, clipBox.y, clipBox.z,
2173	clipBox.w, clipBox.h, clipBox.d,
2174	pSurfaceSrc->internalFormatGL, (GLsizei)imageSize, pSrcBits);
2175	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2176	}
2177	else
2178	{
2179	pState->ext.glTexSubImage3D(target, dest.mipmap,
2180	clipBox.x, clipBox.y, clipBox.z,
2181	clipBox.w, clipBox.h, clipBox.d,
2182	pSurfaceSrc->formatGL, pSurfaceSrc->typeGL, pSrcBits);
2183	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2184	}
2185	}
2186	else
2187	{
2188	if ( pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2189	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2190	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2191	{
2192	uint32_t const cBlocksX = (clipBox.w + pSurfaceSrc->cxBlock - 1) / pSurfaceSrc->cxBlock;
2193	uint32_t const cBlocksY = (clipBox.h + pSurfaceSrc->cyBlock - 1) / pSurfaceSrc->cyBlock;
2194	uint32_t const imageSize = cBlocksX * cBlocksY * pSurfaceSrc->cbBlock;
2195	pState->ext.glCompressedTexSubImage2D(target, dest.mipmap,
2196	clipBox.x, clipBox.y, clipBox.w, clipBox.h,
2197	pSurfaceSrc->internalFormatGL, (GLsizei)imageSize, pSrcBits);
2198	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2199	}
2200	else
2201	{
2202	glTexSubImage2D(target, dest.mipmap,
2203	clipBox.x, clipBox.y, clipBox.w, clipBox.h,
2204	pSurfaceSrc->formatGL, pSurfaceSrc->typeGL, pSrcBits);
2205	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2206	}
2207	}
2208	}
2209
2210	glBindTexture(pSurfaceDst->targetGL, 0);
2211	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2212
2213	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
2214
2215	return VINF_SUCCESS;
2216	}
2217
2218	PVGASTATE pThis = PDMDEVINS_2_DATA(pThisCC->pDevIns, PVGASTATE);
2219	for (uint32_t i = 0; i < cCopyBoxes; i++)
2220	{
2221	SVGA3dBox destBox, srcBox;
2222
2223	srcBox.x = pBox[i].srcx;
2224	srcBox.y = pBox[i].srcy;
2225	srcBox.z = pBox[i].srcz;
2226	srcBox.w = pBox[i].w;
2227	srcBox.h = pBox[i].h;
2228	srcBox.d = pBox[i].d;
2229
2230	destBox.x = pBox[i].x;
2231	destBox.y = pBox[i].y;
2232	destBox.z = pBox[i].z;
2233	destBox.w = pBox[i].w;
2234	destBox.h = pBox[i].h;
2235	destBox.d = pBox[i].d;
2236
2237	/* No stretching is required, therefore use SVGA3D_STRETCH_BLT_POINT which translated to GL_NEAREST. */
2238	rc = vmsvga3dSurfaceStretchBlt(pThis, pThisCC, &dest, &destBox, &src, &srcBox, SVGA3D_STRETCH_BLT_POINT);
2239	AssertRCReturn(rc, rc);
2240	}
2241	return VINF_SUCCESS;
2242	}
2243
2244
2245	/**
2246	* Saves texture unpacking parameters and loads the specified ones.
2247	*
2248	* @param pState The VMSVGA3D state structure.
2249	* @param pContext The active context.
2250	* @param cxRow The number of pixels in a row. 0 for the entire width.
2251	* @param cyImage The height of the image in pixels. 0 for the entire height.
2252	* @param pSave Where to save stuff.
2253	*/
2254	void vmsvga3dOglSetUnpackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, GLint cxRow, GLint cyImage,
2255	PVMSVGAPACKPARAMS pSave)
2256	{
2257	RT_NOREF(pState);
2258
2259	/*
2260	* Save (ignore errors, setting the defaults we want and avoids restore).
2261	*/
2262	pSave->iAlignment = 1;
2263	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ALIGNMENT, &pSave->iAlignment), pState, pContext);
2264	pSave->cxRow = 0;
2265	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ROW_LENGTH, &pSave->cxRow), pState, pContext);
2266	pSave->cyImage = 0;
2267	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_IMAGE_HEIGHT, &pSave->cyImage), pState, pContext);
2268
2269	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2270	pSave->fSwapBytes = GL_FALSE;
2271	glGetBooleanv(GL_UNPACK_SWAP_BYTES, &pSave->fSwapBytes);
2272	Assert(pSave->fSwapBytes == GL_FALSE);
2273
2274	pSave->fLsbFirst = GL_FALSE;
2275	glGetBooleanv(GL_UNPACK_LSB_FIRST, &pSave->fLsbFirst);
2276	Assert(pSave->fLsbFirst == GL_FALSE);
2277
2278	pSave->cSkipRows = 0;
2279	glGetIntegerv(GL_UNPACK_SKIP_ROWS, &pSave->cSkipRows);
2280	Assert(pSave->cSkipRows == 0);
2281
2282	pSave->cSkipPixels = 0;
2283	glGetIntegerv(GL_UNPACK_SKIP_PIXELS, &pSave->cSkipPixels);
2284	Assert(pSave->cSkipPixels == 0);
2285
2286	pSave->cSkipImages = 0;
2287	glGetIntegerv(GL_UNPACK_SKIP_IMAGES, &pSave->cSkipImages);
2288	Assert(pSave->cSkipImages == 0);
2289
2290	VMSVGA3D_CLEAR_GL_ERRORS();
2291	#endif
2292
2293	/*
2294	* Setup unpack.
2295	*
2296	* Note! We use 1 as alignment here because we currently don't do any
2297	* aligning of line pitches anywhere.
2298	*/
2299	pSave->fChanged = 0;
2300	if (pSave->iAlignment != 1)
2301	{
2302	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, 1), pState, pContext);
2303	pSave->fChanged \|= VMSVGAPACKPARAMS_ALIGNMENT;
2304	}
2305	if (pSave->cxRow != cxRow)
2306	{
2307	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, cxRow), pState, pContext);
2308	pSave->fChanged \|= VMSVGAPACKPARAMS_ROW_LENGTH;
2309	}
2310	if (pSave->cyImage != cyImage)
2311	{
2312	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, cyImage), pState, pContext);
2313	pSave->fChanged \|= VMSVGAPACKPARAMS_IMAGE_HEIGHT;
2314	}
2315	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2316	if (pSave->fSwapBytes != 0)
2317	{
2318	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE), pState, pContext);
2319	pSave->fChanged \|= VMSVGAPACKPARAMS_SWAP_BYTES;
2320	}
2321	if (pSave->fLsbFirst != 0)
2322	{
2323	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE), pState, pContext);
2324	pSave->fChanged \|= VMSVGAPACKPARAMS_LSB_FIRST;
2325	}
2326	if (pSave->cSkipRows != 0)
2327	{
2328	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS, 0), pState, pContext);
2329	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_ROWS;
2330	}
2331	if (pSave->cSkipPixels != 0)
2332	{
2333	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0), pState, pContext);
2334	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_PIXELS;
2335	}
2336	if (pSave->cSkipImages != 0)
2337	{
2338	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_IMAGES, 0), pState, pContext);
2339	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_IMAGES;
2340	}
2341	#endif
2342	}
2343
2344
2345	/**
2346	* Restores texture unpacking parameters.
2347	*
2348	* @param pState The VMSVGA3D state structure.
2349	* @param pContext The active context.
2350	* @param pSave Where stuff was saved.
2351	*/
2352	void vmsvga3dOglRestoreUnpackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext,
2353	PCVMSVGAPACKPARAMS pSave)
2354	{
2355	RT_NOREF(pState);
2356
2357	if (pSave->fChanged & VMSVGAPACKPARAMS_ALIGNMENT)
2358	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, pSave->iAlignment), pState, pContext);
2359	if (pSave->fChanged & VMSVGAPACKPARAMS_ROW_LENGTH)
2360	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, pSave->cxRow), pState, pContext);
2361	if (pSave->fChanged & VMSVGAPACKPARAMS_IMAGE_HEIGHT)
2362	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, pSave->cyImage), pState, pContext);
2363	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2364	if (pSave->fChanged & VMSVGAPACKPARAMS_SWAP_BYTES)
2365	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SWAP_BYTES, pSave->fSwapBytes), pState, pContext);
2366	if (pSave->fChanged & VMSVGAPACKPARAMS_LSB_FIRST)
2367	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_LSB_FIRST, pSave->fLsbFirst), pState, pContext);
2368	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_ROWS)
2369	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS, pSave->cSkipRows), pState, pContext);
2370	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_PIXELS)
2371	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS, pSave->cSkipPixels), pState, pContext);
2372	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_IMAGES)
2373	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_IMAGES, pSave->cSkipImages), pState, pContext);
2374	#endif
2375	}
2376
2377	/**
2378	* Create D3D/OpenGL texture object for the specified surface.
2379	*
2380	* Surfaces are created when needed.
2381	*
2382	* @param pThisCC The device context.
2383	* @param pContext The context.
2384	* @param idAssociatedContext Probably the same as pContext->id.
2385	* @param pSurface The surface to create the texture for.
2386	*/
2387	static DECLCALLBACK(int) vmsvga3dBackCreateTexture(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t idAssociatedContext,
2388	PVMSVGA3DSURFACE pSurface)
2389	{
2390	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2391
2392	RT_NOREF(idAssociatedContext);
2393
2394	LogFunc(("sid=%u\n", pSurface->id));
2395
2396	uint32_t const numMipLevels = pSurface->cLevels;
2397
2398	/* Fugure out what kind of texture we are creating. */
2399	GLenum binding;
2400	GLenum target;
2401	if (pSurface->surfaceFlags & SVGA3D_SURFACE_CUBEMAP)
2402	{
2403	Assert(pSurface->cFaces == 6);
2404
2405	binding = GL_TEXTURE_BINDING_CUBE_MAP;
2406	target = GL_TEXTURE_CUBE_MAP;
2407	}
2408	else
2409	{
2410	if (pSurface->paMipmapLevels[0].mipmapSize.depth > 1)
2411	{
2412	binding = GL_TEXTURE_BINDING_3D;
2413	target = GL_TEXTURE_3D;
2414	}
2415	else
2416	{
2417	Assert(pSurface->cFaces == 1);
2418
2419	binding = GL_TEXTURE_BINDING_2D;
2420	target = GL_TEXTURE_2D;
2421	}
2422	}
2423
2424	/* All textures are created in the SharedCtx. */
2425	uint32_t idPrevCtx = pState->idActiveContext;
2426	pContext = &pState->SharedCtx;
2427	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2428
2429	glGenTextures(1, &pSurface->oglId.texture);
2430	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2431	if (pSurface->fEmulated)
2432	{
2433	glGenTextures(1, &pSurface->idEmulated);
2434	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2435	}
2436	pSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_TEXTURE;
2437
2438	GLint activeTexture = 0;
2439	glGetIntegerv(binding, &activeTexture);
2440	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2441
2442	/* Must bind texture to the current context in order to change it. */
2443	glBindTexture(target, pSurface->oglId.texture);
2444	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2445
2446	/* Set the unpacking parameters. */
2447	VMSVGAPACKPARAMS SavedParams;
2448	vmsvga3dOglSetUnpackParams(pState, pContext, 0, 0, &SavedParams);
2449
2450	/** @todo Set the mip map generation filter settings. */
2451
2452	/* Set the mipmap base and max level parameters. */
2453	glTexParameteri(target, GL_TEXTURE_BASE_LEVEL, 0);
2454	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2455	glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, pSurface->cLevels - 1);
2456	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2457
2458	if (pSurface->fDirty)
2459	LogFunc(("sync dirty texture\n"));
2460
2461	/* Always allocate and initialize all mipmap levels; non-initialized mipmap levels used as render targets cause failures. */
2462	if (target == GL_TEXTURE_3D)
2463	{
2464	for (uint32_t i = 0; i < numMipLevels; ++i)
2465	{
2466	/* Allocate and initialize texture memory. Passing the zero filled pSurfaceData avoids
2467	* exposing random host memory to the guest and helps a with the fedora 21 surface
2468	* corruption issues (launchpad, background, search field, login).
2469	*/
2470	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[i];
2471
2472	LogFunc(("sync dirty 3D texture mipmap level %d (pitch %x) (dirty %d)\n",
2473	i, pMipLevel->cbSurfacePitch, pMipLevel->fDirty));
2474
2475	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2476	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2477	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2478	{
2479	pState->ext.glCompressedTexImage3D(GL_TEXTURE_3D,
2480	i,
2481	pSurface->internalFormatGL,
2482	pMipLevel->mipmapSize.width,
2483	pMipLevel->mipmapSize.height,
2484	pMipLevel->mipmapSize.depth,
2485	0,
2486	pMipLevel->cbSurface,
2487	pMipLevel->pSurfaceData);
2488	}
2489	else
2490	{
2491	pState->ext.glTexImage3D(GL_TEXTURE_3D,
2492	i,
2493	pSurface->internalFormatGL,
2494	pMipLevel->mipmapSize.width,
2495	pMipLevel->mipmapSize.height,
2496	pMipLevel->mipmapSize.depth,
2497	0, /* border */
2498	pSurface->formatGL,
2499	pSurface->typeGL,
2500	pMipLevel->pSurfaceData);
2501	}
2502	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2503
2504	pMipLevel->fDirty = false;
2505	}
2506	}
2507	else if (target == GL_TEXTURE_CUBE_MAP)
2508	{
2509	for (uint32_t iFace = 0; iFace < 6; ++iFace)
2510	{
2511	GLenum const Face = vmsvga3dCubemapFaceFromIndex(iFace);
2512
2513	for (uint32_t i = 0; i < numMipLevels; ++i)
2514	{
2515	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[iFace * numMipLevels + i];
2516	Assert(pMipLevel->mipmapSize.width == pMipLevel->mipmapSize.height);
2517	Assert(pMipLevel->mipmapSize.depth == 1);
2518
2519	LogFunc(("sync cube texture face %d mipmap level %d (dirty %d)\n",
2520	iFace, i, pMipLevel->fDirty));
2521
2522	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2523	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2524	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2525	{
2526	pState->ext.glCompressedTexImage2D(Face,
2527	i,
2528	pSurface->internalFormatGL,
2529	pMipLevel->mipmapSize.width,
2530	pMipLevel->mipmapSize.height,
2531	0,
2532	pMipLevel->cbSurface,
2533	pMipLevel->pSurfaceData);
2534	}
2535	else
2536	{
2537	glTexImage2D(Face,
2538	i,
2539	pSurface->internalFormatGL,
2540	pMipLevel->mipmapSize.width,
2541	pMipLevel->mipmapSize.height,
2542	0,
2543	pSurface->formatGL,
2544	pSurface->typeGL,
2545	pMipLevel->pSurfaceData);
2546	}
2547	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2548
2549	pMipLevel->fDirty = false;
2550	}
2551	}
2552	}
2553	else if (target == GL_TEXTURE_2D)
2554	{
2555	for (uint32_t i = 0; i < numMipLevels; ++i)
2556	{
2557	/* Allocate and initialize texture memory. Passing the zero filled pSurfaceData avoids
2558	* exposing random host memory to the guest and helps a with the fedora 21 surface
2559	* corruption issues (launchpad, background, search field, login).
2560	*/
2561	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[i];
2562	Assert(pMipLevel->mipmapSize.depth == 1);
2563
2564	LogFunc(("sync dirty texture mipmap level %d (pitch %x) (dirty %d)\n",
2565	i, pMipLevel->cbSurfacePitch, pMipLevel->fDirty));
2566
2567	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2568	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2569	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2570	{
2571	pState->ext.glCompressedTexImage2D(GL_TEXTURE_2D,
2572	i,
2573	pSurface->internalFormatGL,
2574	pMipLevel->mipmapSize.width,
2575	pMipLevel->mipmapSize.height,
2576	0,
2577	pMipLevel->cbSurface,
2578	pMipLevel->pSurfaceData);
2579	}
2580	else
2581	{
2582	glTexImage2D(GL_TEXTURE_2D,
2583	i,
2584	pSurface->internalFormatGL,
2585	pMipLevel->mipmapSize.width,
2586	pMipLevel->mipmapSize.height,
2587	0,
2588	pSurface->formatGL,
2589	pSurface->typeGL,
2590	NULL);
2591	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2592
2593	if (pSurface->fEmulated)
2594	{
2595	/* Bind the emulated texture and init it. */
2596	glBindTexture(GL_TEXTURE_2D, pSurface->idEmulated);
2597	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2598
2599	glTexImage2D(GL_TEXTURE_2D,
2600	i,
2601	pSurface->internalFormatGL,
2602	pMipLevel->mipmapSize.width,
2603	pMipLevel->mipmapSize.height,
2604	0,
2605	pSurface->formatGL,
2606	pSurface->typeGL,
2607	NULL);
2608	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2609	}
2610
2611	/* Fetch texture data: either to the actual or to the emulated texture.
2612	* The pSurfaceData buffer may be smaller than the entire texture
2613	* for emulated formats, in which case only part of the texture is synched.
2614	*/
2615	uint32_t cBlocksX = pMipLevel->mipmapSize.width / pSurface->cxBlock;
2616	uint32_t cBlocksY = pMipLevel->mipmapSize.height / pSurface->cyBlock;
2617	glTexSubImage2D(GL_TEXTURE_2D,
2618	i,
2619	0,
2620	0,
2621	cBlocksX,
2622	cBlocksY,
2623	pSurface->formatGL,
2624	pSurface->typeGL,
2625	pMipLevel->pSurfaceData);
2626	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2627
2628	if (pSurface->fEmulated)
2629	{
2630	/* Update the actual texture using the format converter. */
2631	FormatConvUpdateTexture(pState, pContext, pSurface, i);
2632
2633	/* Rebind the actual texture. */
2634	glBindTexture(GL_TEXTURE_2D, pSurface->oglId.texture);
2635	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2636	}
2637	}
2638	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2639
2640	pMipLevel->fDirty = false;
2641	}
2642	}
2643
2644	pSurface->fDirty = false;
2645
2646	/* Restore unpacking parameters. */
2647	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
2648
2649	/* Restore the old active texture. */
2650	glBindTexture(target, activeTexture);
2651	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2652
2653	pSurface->surfaceFlags \|= SVGA3D_SURFACE_HINT_TEXTURE;
2654	pSurface->targetGL = target;
2655	pSurface->bindingGL = binding;
2656
2657	if (idPrevCtx < pState->cContexts && pState->papContexts[idPrevCtx]->id == idPrevCtx)
2658	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pState->papContexts[idPrevCtx]);
2659	return VINF_SUCCESS;
2660	}
2661
2662
2663	/**
2664	* Backend worker for implementing SVGA_3D_CMD_SURFACE_STRETCHBLT.
2665	*
2666	* @returns VBox status code.
2667	* @param pThis The VGA device instance.
2668	* @param pState The VMSVGA3d state.
2669	* @param pDstSurface The destination host surface.
2670	* @param uDstFace The destination face (valid).
2671	* @param uDstMipmap The destination mipmap level (valid).
2672	* @param pDstBox The destination box.
2673	* @param pSrcSurface The source host surface.
2674	* @param uSrcFace The destination face (valid).
2675	* @param uSrcMipmap The source mimap level (valid).
2676	* @param pSrcBox The source box.
2677	* @param enmMode The strecht blt mode .
2678	* @param pContext The VMSVGA3d context (already current for OGL).
2679	*/
2680	static DECLCALLBACK(int) vmsvga3dBackSurfaceStretchBlt(PVGASTATE pThis, PVMSVGA3DSTATE pState,
2681	PVMSVGA3DSURFACE pDstSurface, uint32_t uDstFace, uint32_t uDstMipmap, SVGA3dBox const *pDstBox,
2682	PVMSVGA3DSURFACE pSrcSurface, uint32_t uSrcFace, uint32_t uSrcMipmap, SVGA3dBox const *pSrcBox,
2683	SVGA3dStretchBltMode enmMode, PVMSVGA3DCONTEXT pContext)
2684	{
2685	RT_NOREF(pThis);
2686
2687	AssertReturn( RT_BOOL(pSrcSurface->surfaceFlags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL)
2688	== RT_BOOL(pDstSurface->surfaceFlags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL), VERR_NOT_IMPLEMENTED);
2689
2690	GLenum glAttachment = GL_COLOR_ATTACHMENT0;
2691	GLbitfield glMask = GL_COLOR_BUFFER_BIT;
2692	if (pDstSurface->surfaceFlags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL)
2693	{
2694	/** @todo Need GL_DEPTH_STENCIL_ATTACHMENT for depth/stencil formats? */
2695	glAttachment = GL_DEPTH_ATTACHMENT;
2696	glMask = GL_DEPTH_BUFFER_BIT;
2697	}
2698
2699	/* Activate the read and draw framebuffer objects. */
2700	pState->ext.glBindFramebuffer(GL_READ_FRAMEBUFFER, pContext->idReadFramebuffer);
2701	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2702	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, pContext->idDrawFramebuffer);
2703	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2704
2705	/* Bind the source and destination objects to the right place. */
2706	GLenum textarget;
2707	if (pSrcSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2708	textarget = vmsvga3dCubemapFaceFromIndex(uSrcFace);
2709	else
2710	{
2711	/// @todo later AssertMsg(pSrcSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pSrcSurface->targetGL));
2712	textarget = GL_TEXTURE_2D;
2713	}
2714	pState->ext.glFramebufferTexture2D(GL_READ_FRAMEBUFFER, glAttachment, textarget,
2715	pSrcSurface->oglId.texture, uSrcMipmap);
2716	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2717
2718	if (pDstSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2719	textarget = vmsvga3dCubemapFaceFromIndex(uDstFace);
2720	else
2721	{
2722	/// @todo later AssertMsg(pDstSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pDstSurface->targetGL));
2723	textarget = GL_TEXTURE_2D;
2724	}
2725	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, glAttachment, textarget,
2726	pDstSurface->oglId.texture, uDstMipmap);
2727	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2728
2729	Log(("src conv. (%d,%d)(%d,%d); dest conv (%d,%d)(%d,%d)\n",
2730	pSrcBox->x, D3D_TO_OGL_Y_COORD(pSrcSurface, pSrcBox->y + pSrcBox->h),
2731	pSrcBox->x + pSrcBox->w, D3D_TO_OGL_Y_COORD(pSrcSurface, pSrcBox->y),
2732	pDstBox->x, D3D_TO_OGL_Y_COORD(pDstSurface, pDstBox->y + pDstBox->h),
2733	pDstBox->x + pDstBox->w, D3D_TO_OGL_Y_COORD(pDstSurface, pDstBox->y)));
2734
2735	pState->ext.glBlitFramebuffer(pSrcBox->x,
2736	pSrcBox->y,
2737	pSrcBox->x + pSrcBox->w, /* exclusive. */
2738	pSrcBox->y + pSrcBox->h,
2739	pDstBox->x,
2740	pDstBox->y,
2741	pDstBox->x + pDstBox->w, /* exclusive. */
2742	pDstBox->y + pDstBox->h,
2743	glMask,
2744	(enmMode == SVGA3D_STRETCH_BLT_POINT) ? GL_NEAREST : GL_LINEAR);
2745	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2746
2747	/* Reset the frame buffer association */
2748	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer);
2749	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2750
2751	return VINF_SUCCESS;
2752	}
2753
2754	/**
2755	* Save texture packing parameters and loads those appropriate for the given
2756	* surface.
2757	*
2758	* @param pState The VMSVGA3D state structure.
2759	* @param pContext The active context.
2760	* @param pSurface The surface.
2761	* @param pSave Where to save stuff.
2762	*/
2763	void vmsvga3dOglSetPackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2764	PVMSVGAPACKPARAMS pSave)
2765	{
2766	RT_NOREF(pState);
2767	/*
2768	* Save (ignore errors, setting the defaults we want and avoids restore).
2769	*/
2770	pSave->iAlignment = 1;
2771	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_PACK_ALIGNMENT, &pSave->iAlignment), pState, pContext);
2772	pSave->cxRow = 0;
2773	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_PACK_ROW_LENGTH, &pSave->cxRow), pState, pContext);
2774
2775	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2776	pSave->cyImage = 0;
2777	glGetIntegerv(GL_PACK_IMAGE_HEIGHT, &pSave->cyImage);
2778	Assert(pSave->cyImage == 0);
2779
2780	pSave->fSwapBytes = GL_FALSE;
2781	glGetBooleanv(GL_PACK_SWAP_BYTES, &pSave->fSwapBytes);
2782	Assert(pSave->fSwapBytes == GL_FALSE);
2783
2784	pSave->fLsbFirst = GL_FALSE;
2785	glGetBooleanv(GL_PACK_LSB_FIRST, &pSave->fLsbFirst);
2786	Assert(pSave->fLsbFirst == GL_FALSE);
2787
2788	pSave->cSkipRows = 0;
2789	glGetIntegerv(GL_PACK_SKIP_ROWS, &pSave->cSkipRows);
2790	Assert(pSave->cSkipRows == 0);
2791
2792	pSave->cSkipPixels = 0;
2793	glGetIntegerv(GL_PACK_SKIP_PIXELS, &pSave->cSkipPixels);
2794	Assert(pSave->cSkipPixels == 0);
2795
2796	pSave->cSkipImages = 0;
2797	glGetIntegerv(GL_PACK_SKIP_IMAGES, &pSave->cSkipImages);
2798	Assert(pSave->cSkipImages == 0);
2799
2800	VMSVGA3D_CLEAR_GL_ERRORS();
2801	#endif
2802
2803	/*
2804	* Setup unpack.
2805	*
2806	* Note! We use 1 as alignment here because we currently don't do any
2807	* aligning of line pitches anywhere.
2808	*/
2809	NOREF(pSurface);
2810	if (pSave->iAlignment != 1)
2811	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, 1), pState, pContext);
2812	if (pSave->cxRow != 0)
2813	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ROW_LENGTH, 0), pState, pContext);
2814	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2815	if (pSave->cyImage != 0)
2816	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_IMAGE_HEIGHT, 0), pState, pContext);
2817	if (pSave->fSwapBytes != 0)
2818	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SWAP_BYTES, GL_FALSE), pState, pContext);
2819	if (pSave->fLsbFirst != 0)
2820	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_LSB_FIRST, GL_FALSE), pState, pContext);
2821	if (pSave->cSkipRows != 0)
2822	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_ROWS, 0), pState, pContext);
2823	if (pSave->cSkipPixels != 0)
2824	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_PIXELS, 0), pState, pContext);
2825	if (pSave->cSkipImages != 0)
2826	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_IMAGES, 0), pState, pContext);
2827	#endif
2828	}
2829
2830
2831	/**
2832	* Restores texture packing parameters.
2833	*
2834	* @param pState The VMSVGA3D state structure.
2835	* @param pContext The active context.
2836	* @param pSurface The surface.
2837	* @param pSave Where stuff was saved.
2838	*/
2839	void vmsvga3dOglRestorePackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2840	PCVMSVGAPACKPARAMS pSave)
2841	{
2842	RT_NOREF(pState, pSurface);
2843	if (pSave->iAlignment != 1)
2844	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, pSave->iAlignment), pState, pContext);
2845	if (pSave->cxRow != 0)
2846	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ROW_LENGTH, pSave->cxRow), pState, pContext);
2847	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2848	if (pSave->cyImage != 0)
2849	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_IMAGE_HEIGHT, pSave->cyImage), pState, pContext);
2850	if (pSave->fSwapBytes != 0)
2851	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SWAP_BYTES, pSave->fSwapBytes), pState, pContext);
2852	if (pSave->fLsbFirst != 0)
2853	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_LSB_FIRST, pSave->fLsbFirst), pState, pContext);
2854	if (pSave->cSkipRows != 0)
2855	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_ROWS, pSave->cSkipRows), pState, pContext);
2856	if (pSave->cSkipPixels != 0)
2857	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_PIXELS, pSave->cSkipPixels), pState, pContext);
2858	if (pSave->cSkipImages != 0)
2859	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_IMAGES, pSave->cSkipImages), pState, pContext);
2860	#endif
2861	}
2862
2863
2864	/**
2865	* Backend worker for implementing SVGA_3D_CMD_SURFACE_DMA that copies one box.
2866	*
2867	* @returns Failure status code or @a rc.
2868	* @param pThis The shared VGA/VMSVGA instance data.
2869	* @param pThisCC The VGA/VMSVGA state for ring-3.
2870	* @param pState The VMSVGA3d state.
2871	* @param pSurface The host surface.
2872	* @param pMipLevel Mipmap level. The caller knows it already.
2873	* @param uHostFace The host face (valid).
2874	* @param uHostMipmap The host mipmap level (valid).
2875	* @param GuestPtr The guest pointer.
2876	* @param cbGuestPitch The guest pitch.
2877	* @param transfer The transfer direction.
2878	* @param pBox The box to copy (clipped, valid, except for guest's srcx, srcy, srcz).
2879	* @param pContext The context (for OpenGL).
2880	* @param rc The current rc for all boxes.
2881	* @param iBox The current box number (for Direct 3D).
2882	*/
2883	static DECLCALLBACK(int) vmsvga3dBackSurfaceDMACopyBox(PVGASTATE pThis, PVGASTATECC pThisCC, PVMSVGA3DSTATE pState, PVMSVGA3DSURFACE pSurface,
2884	PVMSVGA3DMIPMAPLEVEL pMipLevel, uint32_t uHostFace, uint32_t uHostMipmap,
2885	SVGAGuestPtr GuestPtr, uint32_t cbGuestPitch, SVGA3dTransferType transfer,
2886	SVGA3dCopyBox const *pBox, PVMSVGA3DCONTEXT pContext, int rc, int iBox)
2887	{
2888	RT_NOREF(iBox);
2889
2890	switch (pSurface->enmOGLResType)
2891	{
2892	case VMSVGA3D_OGLRESTYPE_TEXTURE:
2893	{
2894	uint32_t cbSurfacePitch;
2895	uint8_t *pDoubleBuffer;
2896	uint64_t offHst;
2897
2898	uint32_t const u32HostBlockX = pBox->x / pSurface->cxBlock;
2899	uint32_t const u32HostBlockY = pBox->y / pSurface->cyBlock;
2900	uint32_t const u32HostZ = pBox->z;
2901	Assert(u32HostBlockX * pSurface->cxBlock == pBox->x);
2902	Assert(u32HostBlockY * pSurface->cyBlock == pBox->y);
2903
2904	uint32_t const u32GuestBlockX = pBox->srcx / pSurface->cxBlock;
2905	uint32_t const u32GuestBlockY = pBox->srcy / pSurface->cyBlock;
2906	uint32_t const u32GuestZ = pBox->srcz / pSurface->cyBlock;
2907	Assert(u32GuestBlockX * pSurface->cxBlock == pBox->srcx);
2908	Assert(u32GuestBlockY * pSurface->cyBlock == pBox->srcy);
2909
2910	uint32_t const cBlocksX = (pBox->w + pSurface->cxBlock - 1) / pSurface->cxBlock;
2911	uint32_t const cBlocksY = (pBox->h + pSurface->cyBlock - 1) / pSurface->cyBlock;
2912	AssertMsgReturn(cBlocksX && cBlocksY, ("Empty box %dx%d\n", pBox->w, pBox->h), VERR_INTERNAL_ERROR);
2913
2914	GLenum texImageTarget;
2915	if (pSurface->targetGL == GL_TEXTURE_3D)
2916	{
2917	texImageTarget = GL_TEXTURE_3D;
2918	}
2919	else if (pSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2920	{
2921	texImageTarget = vmsvga3dCubemapFaceFromIndex(uHostFace);
2922	}
2923	else
2924	{
2925	AssertMsg(pSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pSurface->targetGL));
2926	texImageTarget = GL_TEXTURE_2D;
2927	}
2928
2929	/* The buffer must be large enough to hold entire texture in the OpenGL format. */
2930	pDoubleBuffer = (uint8_t )RTMemAlloc(pSurface->cbBlockGL pMipLevel->cBlocks);
2931	AssertReturn(pDoubleBuffer, VERR_NO_MEMORY);
2932
2933	if (transfer == SVGA3D_READ_HOST_VRAM)
2934	{
2935	/* Read the entire texture to the double buffer. */
2936	GLint activeTexture;
2937
2938	/* Must bind texture to the current context in order to read it. */
2939	glGetIntegerv(pSurface->bindingGL, &activeTexture);
2940	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2941
2942	glBindTexture(pSurface->targetGL, GLTextureId(pSurface));
2943	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2944
2945	if (pSurface->fEmulated)
2946	{
2947	FormatConvReadTexture(pState, pContext, pSurface, uHostMipmap);
2948	}
2949
2950	/* Set row length and alignment of the input data. */
2951	VMSVGAPACKPARAMS SavedParams;
2952	vmsvga3dOglSetPackParams(pState, pContext, pSurface, &SavedParams);
2953
2954	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2955	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2956	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2957	{
2958	pState->ext.glGetCompressedTexImage(texImageTarget, uHostMipmap, pDoubleBuffer);
2959	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2960	}
2961	else
2962	{
2963	glGetTexImage(texImageTarget, uHostMipmap, pSurface->formatGL, pSurface->typeGL, pDoubleBuffer);
2964	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2965	}
2966
2967	vmsvga3dOglRestorePackParams(pState, pContext, pSurface, &SavedParams);
2968
2969	/* Restore the old active texture. */
2970	glBindTexture(pSurface->targetGL, activeTexture);
2971	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2972
2973	offHst = u32HostBlockX * pSurface->cbBlock + u32HostBlockY * pMipLevel->cbSurfacePitch + u32HostZ * pMipLevel->cbSurfacePlane;
2974	cbSurfacePitch = pMipLevel->cbSurfacePitch;
2975	}
2976	else
2977	{
2978	/* The buffer will contain only the copied rectangle. */
2979	offHst = 0;
2980	cbSurfacePitch = cBlocksX * pSurface->cbBlock;
2981	}
2982
2983	uint64_t offGst = u32GuestBlockX * pSurface->cbBlock + u32GuestBlockY * cbGuestPitch + u32GuestZ * cbGuestPitch * pMipLevel->mipmapSize.height;
2984
2985	for (uint32_t iPlane = 0; iPlane < pBox->d; ++iPlane)
2986	{
2987	AssertBreak(offHst < UINT32_MAX);
2988	AssertBreak(offGst < UINT32_MAX);
2989
2990	rc = vmsvgaR3GmrTransfer(pThis,
2991	pThisCC,
2992	transfer,
2993	pDoubleBuffer,
2994	pMipLevel->cbSurface,
2995	(uint32_t)offHst,
2996	cbSurfacePitch,
2997	GuestPtr,
2998	(uint32_t)offGst,
2999	cbGuestPitch,
3000	cBlocksX * pSurface->cbBlock,
3001	cBlocksY);
3002	AssertRC(rc);
3003
3004	offHst += pMipLevel->cbSurfacePlane;
3005	offGst += pMipLevel->mipmapSize.height * cbGuestPitch;
3006	}
3007
3008	/* Update the opengl surface data. */
3009	if (transfer == SVGA3D_WRITE_HOST_VRAM)
3010	{
3011	GLint activeTexture = 0;
3012	glGetIntegerv(pSurface->bindingGL, &activeTexture);
3013	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3014
3015	/* Must bind texture to the current context in order to change it. */
3016	glBindTexture(pSurface->targetGL, GLTextureId(pSurface));
3017	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3018
3019	LogFunc(("copy texture mipmap level %d (pitch %x)\n", uHostMipmap, pMipLevel->cbSurfacePitch));
3020
3021	/* Set row length and alignment of the input data. */
3022	/* We do not need to set ROW_LENGTH to w here, because the image in pDoubleBuffer is tightly packed. */
3023	VMSVGAPACKPARAMS SavedParams;
3024	vmsvga3dOglSetUnpackParams(pState, pContext, 0, 0, &SavedParams);
3025
3026	if (texImageTarget == GL_TEXTURE_3D)
3027	{
3028	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
3029	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
3030	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
3031	{
3032	pState->ext.glCompressedTexSubImage3D(texImageTarget,
3033	uHostMipmap,
3034	pBox->x,
3035	pBox->y,
3036	pBox->z,
3037	pBox->w,
3038	pBox->h,
3039	pBox->d,
3040	pSurface->internalFormatGL,
3041	cbSurfacePitch * cBlocksY * pBox->d,
3042	pDoubleBuffer);
3043	}
3044	else
3045	{
3046	pState->ext.glTexSubImage3D(texImageTarget,
3047	uHostMipmap,
3048	u32HostBlockX,
3049	u32HostBlockY,
3050	pBox->z,
3051	cBlocksX,
3052	cBlocksY,
3053	pBox->d,
3054	pSurface->formatGL,
3055	pSurface->typeGL,
3056	pDoubleBuffer);
3057	}
3058	}
3059	else
3060	{
3061	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
3062	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
3063	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
3064	{
3065	pState->ext.glCompressedTexSubImage2D(texImageTarget,
3066	uHostMipmap,
3067	pBox->x,
3068	pBox->y,
3069	pBox->w,
3070	pBox->h,
3071	pSurface->internalFormatGL,
3072	cbSurfacePitch * cBlocksY,
3073	pDoubleBuffer);
3074	}
3075	else
3076	{
3077	glTexSubImage2D(texImageTarget,
3078	uHostMipmap,
3079	u32HostBlockX,
3080	u32HostBlockY,
3081	cBlocksX,
3082	cBlocksY,
3083	pSurface->formatGL,
3084	pSurface->typeGL,
3085	pDoubleBuffer);
3086	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3087
3088	if (pSurface->fEmulated)
3089	{
3090	/* Convert the texture to the actual texture if necessary */
3091	FormatConvUpdateTexture(pState, pContext, pSurface, uHostMipmap);
3092	}
3093	}
3094	}
3095	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3096
3097	/* Restore old values. */
3098	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
3099
3100	/* Restore the old active texture. */
3101	glBindTexture(pSurface->targetGL, activeTexture);
3102	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3103	}
3104
3105	Log4(("first line:\n%.Rhxd\n", cBlocksX pSurface->cbBlock, pDoubleBuffer));
3106
3107	/* Free the double buffer. */
3108	RTMemFree(pDoubleBuffer);
3109	break;
3110	}
3111
3112	case VMSVGA3D_OGLRESTYPE_BUFFER:
3113	{
3114	/* Buffers are uncompressed. */
3115	AssertReturn(pSurface->cxBlock == 1 && pSurface->cyBlock == 1, VERR_INTERNAL_ERROR);
3116
3117	/* Caller already clipped pBox and buffers are 1-dimensional. */
3118	Assert(pBox->y == 0 && pBox->h == 1 && pBox->z == 0 && pBox->d == 1);
3119
3120	VMSVGA3D_CLEAR_GL_ERRORS();
3121	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pSurface->oglId.buffer);
3122	if (VMSVGA3D_GL_IS_SUCCESS(pContext))
3123	{
3124	GLenum enmGlTransfer = (transfer == SVGA3D_READ_HOST_VRAM) ? GL_READ_ONLY : GL_WRITE_ONLY;
3125	uint8_t pbData = (uint8_t )pState->ext.glMapBuffer(GL_ARRAY_BUFFER, enmGlTransfer);
3126	if (RT_LIKELY(pbData != NULL))
3127	{
3128	#if defined(VBOX_STRICT) && defined(RT_OS_DARWIN)
3129	GLint cbStrictBufSize;
3130	glGetBufferParameteriv(GL_ARRAY_BUFFER, GL_BUFFER_SIZE, &cbStrictBufSize);
3131	Assert(VMSVGA3D_GL_IS_SUCCESS(pContext));
3132	AssertMsg(cbStrictBufSize >= (int32_t)pMipLevel->cbSurface,
3133	("cbStrictBufSize=%#x cbSurface=%#x pContext->id=%#x\n", (uint32_t)cbStrictBufSize, pMipLevel->cbSurface, pContext->id));
3134	#endif
3135	Log(("Lock %s memory for rectangle (%d,%d)(%d,%d)\n",
3136	(pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK) == SVGA3D_SURFACE_HINT_VERTEXBUFFER ? "vertex" :
3137	(pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK) == SVGA3D_SURFACE_HINT_INDEXBUFFER ? "index" : "buffer",
3138	pBox->x, pBox->y, pBox->x + pBox->w, pBox->y + pBox->h));
3139
3140	/* The caller already copied the data to the pMipLevel->pSurfaceData buffer, see VMSVGA3DSURFACE_NEEDS_DATA. */
3141	uint32_t const offHst = pBox->x * pSurface->cbBlock;
3142	uint32_t const cbWidth = pBox->w * pSurface->cbBlock;
3143
3144	memcpy(pbData + offHst, (uint8_t *)pMipLevel->pSurfaceData + offHst, cbWidth);
3145
3146	Log4(("Buffer updated at [0x%x;0x%x):\n%.Rhxd\n", offHst, offHst + cbWidth, cbWidth, (uint8_t )pbData + offHst));
3147
3148	pState->ext.glUnmapBuffer(GL_ARRAY_BUFFER);
3149	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3150	}
3151	else
3152	VMSVGA3D_GL_GET_AND_COMPLAIN(pState, pContext, ("glMapBuffer(GL_ARRAY_BUFFER, %#x) -> NULL\n", enmGlTransfer));
3153	}
3154	else
3155	VMSVGA3D_GL_COMPLAIN(pState, pContext, ("glBindBuffer(GL_ARRAY_BUFFER, %#x)\n", pSurface->oglId.buffer));
3156	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
3157	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3158	break;
3159	}
3160
3161	default:
3162	AssertFailed();
3163	break;
3164	}
3165
3166	return rc;
3167	}
3168
3169	static DECLCALLBACK(int) vmsvga3dBackGenerateMipmaps(PVGASTATECC pThisCC, uint32_t sid, SVGA3dTextureFilter filter)
3170	{
3171	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3172	PVMSVGA3DSURFACE pSurface;
3173	int rc = VINF_SUCCESS;
3174	PVMSVGA3DCONTEXT pContext;
3175	uint32_t cid;
3176	GLint activeTexture = 0;
3177
3178	AssertReturn(pState, VERR_NO_MEMORY);
3179
3180	rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
3181	AssertRCReturn(rc, rc);
3182
3183	Assert(filter != SVGA3D_TEX_FILTER_FLATCUBIC);
3184	Assert(filter != SVGA3D_TEX_FILTER_GAUSSIANCUBIC);
3185	pSurface->autogenFilter = filter;
3186
3187	LogFunc(("sid=%u filter=%d\n", sid, filter));
3188
3189	cid = SVGA3D_INVALID_ID;
3190	pContext = &pState->SharedCtx;
3191	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3192
3193	if (pSurface->oglId.texture == OPENGL_INVALID_ID)
3194	{
3195	/* Unknown surface type; turn it into a texture. */
3196	LogFunc(("unknown src surface id=%x type=%d format=%d -> create texture\n", sid, pSurface->surfaceFlags, pSurface->format));
3197	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pSurface);
3198	AssertRCReturn(rc, rc);
3199	}
3200	else
3201	{
3202	/** @todo new filter */
3203	AssertFailed();
3204	}
3205
3206	glGetIntegerv(pSurface->bindingGL, &activeTexture);
3207	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3208
3209	/* Must bind texture to the current context in order to change it. */
3210	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
3211	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3212
3213	/* Generate the mip maps. */
3214	pState->ext.glGenerateMipmap(pSurface->targetGL);
3215	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3216
3217	/* Restore the old texture. */
3218	glBindTexture(pSurface->targetGL, activeTexture);
3219	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3220
3221	return VINF_SUCCESS;
3222	}
3223
3224
3225	#ifdef RT_OS_LINUX
3226	/**
3227	* X11 event handling thread.
3228	*
3229	* @returns VINF_SUCCESS (ignored)
3230	* @param hThreadSelf thread handle
3231	* @param pvUser pointer to pState structure
3232	*/
3233	DECLCALLBACK(int) vmsvga3dXEventThread(RTTHREAD hThreadSelf, void *pvUser)
3234	{
3235	RT_NOREF(hThreadSelf);
3236	PVMSVGA3DSTATE pState = (PVMSVGA3DSTATE)pvUser;
3237	while (!pState->bTerminate)
3238	{
3239	while (XPending(pState->display) > 0)
3240	{
3241	XEvent event;
3242	XNextEvent(pState->display, &event);
3243
3244	switch (event.type)
3245	{
3246	default:
3247	break;
3248	}
3249	}
3250	/* sleep for 16ms to not burn too many cycles */
3251	RTThreadSleep(16);
3252	}
3253	return VINF_SUCCESS;
3254	}
3255	#endif // RT_OS_LINUX
3256
3257
3258	/**
3259	* Create a new 3d context
3260	*
3261	* @returns VBox status code.
3262	* @param pThisCC The VGA/VMSVGA state for ring-3.
3263	* @param cid Context id
3264	* @param fFlags VMSVGA3D_DEF_CTX_F_XXX.
3265	*/
3266	int vmsvga3dContextDefineOgl(PVGASTATECC pThisCC, uint32_t cid, uint32_t fFlags)
3267	{
3268	int rc;
3269	PVMSVGA3DCONTEXT pContext;
3270	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3271
3272	AssertReturn(pState, VERR_NO_MEMORY);
3273	AssertReturn( cid < SVGA3D_MAX_CONTEXT_IDS
3274	\|\| (cid == VMSVGA3D_SHARED_CTX_ID && (fFlags & VMSVGA3D_DEF_CTX_F_SHARED_CTX)), VERR_INVALID_PARAMETER);
3275	#if !defined(VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE) \|\| !(defined(RT_OS_DARWIN))
3276	AssertReturn(!(fFlags & VMSVGA3D_DEF_CTX_F_OTHER_PROFILE), VERR_INTERNAL_ERROR_3);
3277	#endif
3278
3279	Log(("vmsvga3dContextDefine id %x\n", cid));
3280
3281	if (cid == VMSVGA3D_SHARED_CTX_ID)
3282	pContext = &pState->SharedCtx;
3283	else
3284	{
3285	if (cid >= pState->cContexts)
3286	{
3287	/* Grow the array. */
3288	uint32_t cNew = RT_ALIGN(cid + 15, 16);
3289	void pvNew = RTMemRealloc(pState->papContexts, sizeof(pState->papContexts[0]) cNew);
3290	AssertReturn(pvNew, VERR_NO_MEMORY);
3291	pState->papContexts = (PVMSVGA3DCONTEXT *)pvNew;
3292	while (pState->cContexts < cNew)
3293	{
3294	pContext = (PVMSVGA3DCONTEXT)RTMemAllocZ(sizeof(*pContext));
3295	AssertReturn(pContext, VERR_NO_MEMORY);
3296	pContext->id = SVGA3D_INVALID_ID;
3297	pState->papContexts[pState->cContexts++] = pContext;
3298	}
3299	}
3300	/* If one already exists with this id, then destroy it now. */
3301	if (pState->papContexts[cid]->id != SVGA3D_INVALID_ID)
3302	vmsvga3dBackContextDestroy(pThisCC, cid);
3303
3304	pContext = pState->papContexts[cid];
3305	}
3306
3307	/*
3308	* Find or create the shared context if needed (necessary for sharing e.g. textures between contexts).
3309	*/
3310	PVMSVGA3DCONTEXT pSharedCtx = NULL;
3311	if (!(fFlags & (VMSVGA3D_DEF_CTX_F_INIT \| VMSVGA3D_DEF_CTX_F_SHARED_CTX)))
3312	{
3313	pSharedCtx = &pState->SharedCtx;
3314	if (pSharedCtx->id != VMSVGA3D_SHARED_CTX_ID)
3315	{
3316	rc = vmsvga3dContextDefineOgl(pThisCC, VMSVGA3D_SHARED_CTX_ID, VMSVGA3D_DEF_CTX_F_SHARED_CTX);
3317	AssertLogRelRCReturn(rc, rc);
3318
3319	/* Create resources which use the shared context. */
3320	vmsvga3dOnSharedContextDefine(pState);
3321	}
3322	}
3323
3324	/*
3325	* Initialize the context.
3326	*/
3327	memset(pContext, 0, sizeof(*pContext));
3328	pContext->id = cid;
3329	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); i++)
3330	pContext->aSidActiveTextures[i] = SVGA3D_INVALID_ID;
3331
3332	pContext->state.shidVertex = SVGA3D_INVALID_ID;
3333	pContext->state.shidPixel = SVGA3D_INVALID_ID;
3334	pContext->idFramebuffer = OPENGL_INVALID_ID;
3335	pContext->idReadFramebuffer = OPENGL_INVALID_ID;
3336	pContext->idDrawFramebuffer = OPENGL_INVALID_ID;
3337
3338	rc = ShaderContextCreate(&pContext->pShaderContext);
3339	AssertRCReturn(rc, rc);
3340
3341	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->state.aRenderTargets); i++)
3342	pContext->state.aRenderTargets[i] = SVGA3D_INVALID_ID;
3343
3344	#ifdef RT_OS_WINDOWS
3345	/* Create a context window with minimal 4x4 size. We will never use the swapchain
3346	* to present the rendered image. Rendered images from the guest will be copied to
3347	* the VMSVGA SCREEN object, which can be either an offscreen render target or
3348	* system memory in the guest VRAM.
3349	*/
3350	rc = vmsvga3dContextWindowCreate(pState->hInstance, pState->pWindowThread, pState->WndRequestSem, &pContext->hwnd);
3351	AssertRCReturn(rc, rc);
3352
3353	pContext->hdc = GetDC(pContext->hwnd);
3354	AssertMsgReturn(pContext->hdc, ("GetDC %x failed with %d\n", pContext->hwnd, GetLastError()), VERR_INTERNAL_ERROR);
3355
3356	PIXELFORMATDESCRIPTOR pfd = {
3357	sizeof(PIXELFORMATDESCRIPTOR), /* size of this pfd */
3358	1, /* version number */
3359	PFD_DRAW_TO_WINDOW \| /* support window */
3360	PFD_SUPPORT_OPENGL, /* support OpenGL */
3361	PFD_TYPE_RGBA, /* RGBA type */
3362	24, /* 24-bit color depth */
3363	0, 0, 0, 0, 0, 0, /* color bits ignored */
3364	8, /* alpha buffer */
3365	0, /* shift bit ignored */
3366	0, /* no accumulation buffer */
3367	0, 0, 0, 0, /* accum bits ignored */
3368	16, /* set depth buffer */
3369	16, /* set stencil buffer */
3370	0, /* no auxiliary buffer */
3371	PFD_MAIN_PLANE, /* main layer */
3372	0, /* reserved */
3373	0, 0, 0 /* layer masks ignored */
3374	};
3375	int pixelFormat;
3376	BOOL ret;
3377
3378	pixelFormat = ChoosePixelFormat(pContext->hdc, &pfd);
3379	/** @todo is this really necessary?? */
3380	pixelFormat = ChoosePixelFormat(pContext->hdc, &pfd);
3381	AssertMsgReturn(pixelFormat != 0, ("ChoosePixelFormat failed with %d\n", GetLastError()), VERR_INTERNAL_ERROR);
3382
3383	ret = SetPixelFormat(pContext->hdc, pixelFormat, &pfd);
3384	AssertMsgReturn(ret == TRUE, ("SetPixelFormat failed with %d\n", GetLastError()), VERR_INTERNAL_ERROR);
3385
3386	pContext->hglrc = wglCreateContext(pContext->hdc);
3387	AssertMsgReturn(pContext->hglrc, ("wglCreateContext %x failed with %d\n", pContext->hdc, GetLastError()), VERR_INTERNAL_ERROR);
3388
3389	if (pSharedCtx)
3390	{
3391	ret = wglShareLists(pSharedCtx->hglrc, pContext->hglrc);
3392	AssertMsg(ret == TRUE, ("wglShareLists(%p, %p) failed with %d\n", pSharedCtx->hglrc, pContext->hglrc, GetLastError()));
3393	}
3394
3395	#elif defined(RT_OS_DARWIN)
3396	pContext->fOtherProfile = RT_BOOL(fFlags & VMSVGA3D_DEF_CTX_F_OTHER_PROFILE);
3397
3398	NativeNSOpenGLContextRef pShareContext = pSharedCtx ? pSharedCtx->cocoaContext : NULL;
3399	vmsvga3dCocoaCreateViewAndContext(&pContext->cocoaView, &pContext->cocoaContext,
3400	NULL,
3401	4, 4,
3402	pShareContext, pContext->fOtherProfile);
3403
3404	#else
3405	if (pState->display == NULL)
3406	{
3407	/* get an X display and make sure we have glX 1.3 */
3408	pState->display = XOpenDisplay(0);
3409	AssertLogRelMsgReturn(pState->display, ("XOpenDisplay failed"), VERR_INTERNAL_ERROR);
3410	int glxMajor, glxMinor;
3411	Bool ret = glXQueryVersion(pState->display, &glxMajor, &glxMinor);
3412	AssertLogRelMsgReturn(ret && glxMajor == 1 && glxMinor >= 3, ("glX >=1.3 not present"), VERR_INTERNAL_ERROR);
3413	/* start our X event handling thread */
3414	rc = RTThreadCreate(&pState->pWindowThread, vmsvga3dXEventThread, pState, 0, RTTHREADTYPE_GUI, RTTHREADFLAGS_WAITABLE, "VMSVGA3DXEVENT");
3415	AssertLogRelMsgReturn(RT_SUCCESS(rc), ("Async IO Thread creation for 3d window handling failed rc=%Rrc\n", rc), rc);
3416	}
3417
3418	Window defaultRootWindow = XDefaultRootWindow(pState->display);
3419	/* Create a small 4x4 window required for GL context. */
3420	int attrib[] =
3421	{
3422	GLX_RGBA,
3423	GLX_RED_SIZE, 1,
3424	GLX_GREEN_SIZE, 1,
3425	GLX_BLUE_SIZE, 1,
3426	//GLX_ALPHA_SIZE, 1, this flips the bbos screen
3427	GLX_DOUBLEBUFFER,
3428	None
3429	};
3430	XVisualInfo *vi = glXChooseVisual(pState->display, DefaultScreen(pState->display), attrib);
3431	AssertLogRelMsgReturn(vi, ("glXChooseVisual failed"), VERR_INTERNAL_ERROR);
3432	XSetWindowAttributes swa;
3433	swa.colormap = XCreateColormap(pState->display, defaultRootWindow, vi->visual, AllocNone);
3434	AssertLogRelMsgReturn(swa.colormap, ("XCreateColormap failed"), VERR_INTERNAL_ERROR);
3435	swa.border_pixel = 0;
3436	swa.background_pixel = 0;
3437	swa.event_mask = StructureNotifyMask;
3438	unsigned long flags = CWBorderPixel \| CWBackPixel \| CWColormap \| CWEventMask;
3439	pContext->window = XCreateWindow(pState->display, defaultRootWindow,
3440	0, 0, 4, 4,
3441	0, vi->depth, InputOutput,
3442	vi->visual, flags, &swa);
3443	AssertLogRelMsgReturn(pContext->window, ("XCreateWindow failed"), VERR_INTERNAL_ERROR);
3444
3445	/* The window is hidden by default and never mapped, because we only render offscreen and never present to it. */
3446
3447	GLXContext shareContext = pSharedCtx ? pSharedCtx->glxContext : NULL;
3448	pContext->glxContext = glXCreateContext(pState->display, vi, shareContext, GL_TRUE);
3449	AssertLogRelMsgReturn(pContext->glxContext, ("glXCreateContext failed"), VERR_INTERNAL_ERROR);
3450	#endif
3451
3452	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3453
3454	/* NULL during the first PowerOn call. */
3455	if (pState->ext.glGenFramebuffers)
3456	{
3457	/* Create a framebuffer object for this context. */
3458	pState->ext.glGenFramebuffers(1, &pContext->idFramebuffer);
3459	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3460
3461	/* Bind the object to the framebuffer target. */
3462	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer);
3463	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3464
3465	/* Create read and draw framebuffer objects for this context. */
3466	pState->ext.glGenFramebuffers(1, &pContext->idReadFramebuffer);
3467	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3468
3469	pState->ext.glGenFramebuffers(1, &pContext->idDrawFramebuffer);
3470	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3471
3472	}
3473	#if 0
3474	/** @todo move to shader lib!!! */
3475	/* Clear the screen */
3476	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3477
3478	glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
3479	glClearIndex(0);
3480	glClearDepth(1);
3481	glClearStencil(0xffff);
3482	glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
3483	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
3484	glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
3485	if (pState->ext.glProvokingVertex)
3486	pState->ext.glProvokingVertex(GL_FIRST_VERTEX_CONVENTION);
3487	/** @todo move to shader lib!!! */
3488	#endif
3489	return VINF_SUCCESS;
3490	}
3491
3492	#if defined(RT_OS_LINUX)
3493	/*
3494	* HW accelerated graphics output.
3495	*/
3496
3497	/**
3498	* VMSVGA3d screen data.
3499	*
3500	* Allocated on the heap and pointed to by VMSVGASCREENOBJECT::pHwScreen.
3501	*/
3502	typedef struct VMSVGAHWSCREEN
3503	{
3504	/* OpenGL context, which is used for the screen updates. */
3505	GLXContext glxctx;
3506
3507	/* The overlay window. */
3508	Window xwindow;
3509
3510	/* The RGBA texture which hold the screen content. */
3511	GLuint idScreenTexture;
3512
3513	/* Read and draw framebuffer objects for copying a surface to the screen texture. */
3514	GLuint idReadFramebuffer;
3515	GLuint idDrawFramebuffer;
3516	} VMSVGAHWSCREEN;
3517
3518	/* Send a notification to the UI. */
3519	#if 0 /* Unused */
3520	static int vmsvga3dDrvNotifyHwScreen(PVGASTATECC pThisCC, VBOX3D_NOTIFY_TYPE enmNotification,
3521	uint32_t idScreen, Pixmap pixmap, void *pvData, size_t cbData)
3522	{
3523	uint8_t au8Buffer[128];
3524	AssertLogRelMsgReturn(cbData <= sizeof(au8Buffer) - sizeof(VBOX3DNOTIFY),
3525	("cbData %zu", cbData),
3526	VERR_INVALID_PARAMETER);
3527
3528	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3529	p->enmNotification = enmNotification;
3530	p->iDisplay = idScreen;
3531	p->u32Reserved = 0;
3532	p->cbData = cbData + sizeof(uint64_t);
3533	/* au8Data consists of a 64 bit pixmap handle followed by notification specific data. */
3534	AssertCompile(sizeof(pixmap) <= sizeof(uint64_t));
3535	(uint64_t )&p->au8Data[0] = (uint64_t)pixmap;
3536	memcpy(&p->au8Data[sizeof(uint64_t)], pvData, cbData);
3537
3538	int rc = pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3539	return rc;
3540	}
3541	#endif /* Unused */
3542
3543	static void vmsvga3dDrvNotifyHwOverlay(PVGASTATECC pThisCC, VBOX3D_NOTIFY_TYPE enmNotification, uint32_t idScreen)
3544	{
3545	uint8_t au8Buffer[128];
3546	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3547	p->enmNotification = enmNotification;
3548	p->iDisplay = idScreen;
3549	p->u32Reserved = 0;
3550	p->cbData = sizeof(uint64_t);
3551	(uint64_t )&p->au8Data[0] = 0;
3552
3553	pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3554	}
3555
3556	/* Get X Window handle of the UI Framebuffer window. */
3557	static int vmsvga3dDrvQueryWindow(PVGASTATECC pThisCC, uint32_t idScreen, Window *pWindow)
3558	{
3559	uint8_t au8Buffer[128];
3560	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3561	p->enmNotification = VBOX3D_NOTIFY_TYPE_HW_OVERLAY_GET_ID;
3562	p->iDisplay = idScreen;
3563	p->u32Reserved = 0;
3564	p->cbData = sizeof(uint64_t);
3565	(uint64_t )&p->au8Data[0] = 0;
3566
3567	int rc = pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3568	if (RT_SUCCESS(rc))
3569	{
3570	pWindow = (Window)(uint64_t *)&p->au8Data[0];
3571	}
3572	return rc;
3573	}
3574
3575	static int ctxErrorHandler(Display dpy, XErrorEvent ev)
3576	{
3577	RT_NOREF(dpy);
3578	LogRel4(("VMSVGA: XError %d\n", (int)ev->error_code));
3579	return 0;
3580	}
3581
3582	/* Create an overlay X window for the HW accelerated screen. */
3583	static int vmsvga3dHwScreenCreate(PVMSVGA3DSTATE pState, Window parentWindow, unsigned int cWidth, unsigned int cHeight, VMSVGAHWSCREEN *p)
3584	{
3585	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3586
3587	int rc = VINF_SUCCESS;
3588
3589	XWindowAttributes parentAttr;
3590	if (XGetWindowAttributes(pState->display, parentWindow, &parentAttr) == 0)
3591	return VERR_INVALID_PARAMETER;
3592
3593	int const idxParentScreen = XScreenNumberOfScreen(parentAttr.screen);
3594
3595	/*
3596	* Create a new GL context, which will be used for copying to the screen.
3597	*/
3598
3599	/* FBConfig attributes for the overlay window. */
3600	static int const aConfigAttribList[] =
3601	{
3602	GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT, // Must support GLX windows
3603	GLX_DOUBLEBUFFER, False, // Double buffering had a much lower performance.
3604	GLX_RED_SIZE, 8, // True color RGB with 8 bits per channel.
3605	GLX_GREEN_SIZE, 8,
3606	GLX_BLUE_SIZE, 8,
3607	GLX_ALPHA_SIZE, 8,
3608	GLX_STENCIL_SIZE, 0, // No stencil buffer
3609	GLX_DEPTH_SIZE, 0, // No depth buffer
3610	None
3611	};
3612
3613	/* Find a suitable FB config. */
3614	int cConfigs = 0;
3615	GLXFBConfig *paConfigs = glXChooseFBConfig(pState->display, idxParentScreen, aConfigAttribList, &cConfigs);
3616	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: paConfigs %p cConfigs %d\n", (void *)paConfigs, cConfigs));
3617	if (paConfigs)
3618	{
3619	XVisualInfo *vi = NULL;
3620	int i = 0;
3621	for (; i < cConfigs; ++i)
3622	{
3623	/* Use XFree to free the data returned in the previous iteration of this loop. */
3624	if (vi)
3625	XFree(vi);
3626
3627	vi = glXGetVisualFromFBConfig(pState->display, paConfigs[i]);
3628	if (!vi)
3629	continue;
3630
3631	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: %p vid %lu screen %d depth %d r %lu g %lu b %lu clrmap %d bitsperrgb %d\n",
3632	(void *)vi->visual, vi->visualid, vi->screen, vi->depth,
3633	vi->red_mask, vi->green_mask, vi->blue_mask, vi->colormap_size, vi->bits_per_rgb));
3634
3635	/* Same screen as the parent window. */
3636	if (vi->screen != idxParentScreen)
3637	continue;
3638
3639	/* Search for 32 bits per pixel. */
3640	if (vi->depth != 32)
3641	continue;
3642
3643	/* 8 bits per color component is enough. */
3644	if (vi->bits_per_rgb != 8)
3645	continue;
3646
3647	/* Render to pixmap. */
3648	int value = 0;
3649	glXGetFBConfigAttrib(pState->display, paConfigs[i], GLX_DRAWABLE_TYPE, &value);
3650	if (!(value & GLX_WINDOW_BIT))
3651	continue;
3652
3653	/* This FB config can be used. */
3654	break;
3655	}
3656
3657	if (i < cConfigs)
3658	{
3659	/* Found a suitable config with index i. */
3660
3661	/* Create an overlay window. */
3662	XSetWindowAttributes swa;
3663	RT_ZERO(swa);
3664
3665	swa.colormap = XCreateColormap(pState->display, parentWindow, vi->visual, AllocNone);
3666	AssertLogRelMsg(swa.colormap, ("XCreateColormap failed"));
3667	swa.border_pixel = 0;
3668	swa.background_pixel = 0;
3669	swa.event_mask = StructureNotifyMask;
3670	swa.override_redirect = 1;
3671	unsigned long const swaAttrs = CWBorderPixel \| CWBackPixel \| CWColormap \| CWEventMask \| CWOverrideRedirect;
3672	p->xwindow = XCreateWindow(pState->display, parentWindow,
3673	0, 0, cWidth, cHeight, 0, vi->depth, InputOutput,
3674	vi->visual, swaAttrs, &swa);
3675	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: p->xwindow %ld\n", p->xwindow));
3676	if (p->xwindow)
3677	{
3678
3679	p->glxctx = glXCreateContext(pState->display, vi, pState->SharedCtx.glxContext, GL_TRUE);
3680	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: p->glxctx %p\n", (void *)p->glxctx));
3681	if (p->glxctx)
3682	{
3683	XMapWindow(pState->display, p->xwindow);
3684	}
3685	else
3686	{
3687	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: glXCreateContext failed\n"));
3688	rc = VERR_NOT_SUPPORTED;
3689	}
3690	}
3691	else
3692	{
3693	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: XCreateWindow failed\n"));
3694	rc = VERR_NOT_SUPPORTED;
3695	}
3696
3697	XSync(pState->display, False);
3698	}
3699	else
3700	{
3701	/* A suitable config is not found. */
3702	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: no FBConfig\n"));
3703	rc = VERR_NOT_SUPPORTED;
3704	}
3705
3706	if (vi)
3707	XFree(vi);
3708
3709	/* "Use XFree to free the memory returned by glXChooseFBConfig." */
3710	XFree(paConfigs);
3711	}
3712	else
3713	{
3714	/* glXChooseFBConfig failed. */
3715	rc = VERR_NOT_SUPPORTED;
3716	}
3717
3718	XSetErrorHandler(oldHandler);
3719	return rc;
3720	}
3721
3722	/* Destroy a HW accelerated screen. */
3723	static void vmsvga3dHwScreenDestroy(PVMSVGA3DSTATE pState, VMSVGAHWSCREEN *p)
3724	{
3725	if (p)
3726	{
3727	LogRel4(("VMSVGA: vmsvga3dHwScreenDestroy: p->xwindow %ld, ctx %p\n", p->xwindow, (void *)p->glxctx));
3728	if (p->glxctx)
3729	{
3730	/* GLX context is changed here, so other code has to set the appropriate context again. */
3731	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3732
3733	glXMakeCurrent(pState->display, p->xwindow, p->glxctx);
3734
3735	/* Clean up OpenGL. */
3736	if (p->idReadFramebuffer != OPENGL_INVALID_ID)
3737	pState->ext.glDeleteFramebuffers(1, &p->idReadFramebuffer);
3738	if (p->idDrawFramebuffer != OPENGL_INVALID_ID)
3739	pState->ext.glDeleteFramebuffers(1, &p->idDrawFramebuffer);
3740	if (p->idScreenTexture != OPENGL_INVALID_ID)
3741	glDeleteTextures(1, &p->idScreenTexture);
3742
3743	glXMakeCurrent(pState->display, None, NULL);
3744
3745	glXDestroyContext(pState->display, p->glxctx);
3746	}
3747
3748	if (p->xwindow)
3749	XDestroyWindow(pState->display, p->xwindow);
3750
3751	RT_ZERO(*p);
3752	}
3753	}
3754
3755	#define GLCHECK() \
3756	do { \
3757	int glErr = glGetError(); \
3758	if (glErr != GL_NO_ERROR) LogRel4(("VMSVGA: GL error 0x%x @%d\n", glErr, __LINE__)); \
3759	} while(0)
3760
3761	static DECLCALLBACK(int) vmsvga3dBackDefineScreen(PVGASTATE pThis, PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3762	{
3763	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: screen %u\n", pScreen->idScreen));
3764
3765	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3766	AssertReturn(pState, VERR_NOT_SUPPORTED);
3767
3768	if (!pThis->svga.f3DOverlayEnabled)
3769	return VERR_NOT_SUPPORTED;
3770
3771	Assert(pScreen->pHwScreen == NULL);
3772
3773	VMSVGAHWSCREEN p = (VMSVGAHWSCREEN )RTMemAllocZ(sizeof(VMSVGAHWSCREEN));
3774	AssertPtrReturn(p, VERR_NO_MEMORY);
3775
3776	/* Query the parent window ID from the UI framebuffer.
3777	* If it is there then
3778	* the device will create a texture for the screen content and an overlay window to present the screen content.
3779	* otherwise
3780	* the device will use the guest VRAM system memory for the screen content.
3781	*/
3782	Window parentWindow;
3783	int rc = vmsvga3dDrvQueryWindow(pThisCC, pScreen->idScreen, &parentWindow);
3784	if (RT_SUCCESS(rc))
3785	{
3786	/* Create the hardware accelerated screen. */
3787	rc = vmsvga3dHwScreenCreate(pState, parentWindow, pScreen->cWidth, pScreen->cHeight, p);
3788	if (RT_SUCCESS(rc))
3789	{
3790	/*
3791	* Setup the OpenGL context of the screen. The context will be used to draw on the screen.
3792	*/
3793
3794	/* GLX context is changed here, so other code has to set the appropriate context again. */
3795	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3796
3797	Bool const fSuccess = glXMakeCurrent(pState->display, p->xwindow, p->glxctx);
3798	if (fSuccess)
3799	{
3800	/* Set GL state. */
3801	glClearColor(0, 0, 0, 1);
3802	glEnable(GL_TEXTURE_2D);
3803	glDisable(GL_DEPTH_TEST);
3804	glDisable(GL_CULL_FACE);
3805
3806	/* The RGBA texture which hold the screen content. */
3807	glGenTextures(1, &p->idScreenTexture); GLCHECK();
3808	glBindTexture(GL_TEXTURE_2D, p->idScreenTexture); GLCHECK();
3809	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); GLCHECK();
3810	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); GLCHECK();
3811	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, pScreen->cWidth, pScreen->cHeight, 0,
3812	GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL); GLCHECK();
3813
3814	/* Create read and draw framebuffer objects for this screen. */
3815	pState->ext.glGenFramebuffers(1, &p->idReadFramebuffer); GLCHECK();
3816	pState->ext.glGenFramebuffers(1, &p->idDrawFramebuffer); GLCHECK();
3817
3818	/* Work in screen coordinates. */
3819	glMatrixMode(GL_MODELVIEW);
3820	glLoadIdentity();
3821	glOrtho(0, pScreen->cWidth, 0, pScreen->cHeight, -1, 1);
3822	glMatrixMode(GL_PROJECTION);
3823	glLoadIdentity();
3824
3825	/* Clear the texture. */
3826	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, p->idDrawFramebuffer); GLCHECK();
3827	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
3828	p->idScreenTexture, 0); GLCHECK();
3829
3830	glClear(GL_COLOR_BUFFER_BIT);
3831
3832	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); GLCHECK();
3833
3834	glXMakeCurrent(pState->display, None, NULL);
3835
3836	XSync(pState->display, False);
3837
3838	vmsvga3dDrvNotifyHwOverlay(pThisCC, VBOX3D_NOTIFY_TYPE_HW_OVERLAY_CREATED, pScreen->idScreen);
3839	}
3840	else
3841	{
3842	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: failed to set current context\n"));
3843	rc = VERR_NOT_SUPPORTED;
3844	}
3845	}
3846	}
3847	else
3848	{
3849	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: no framebuffer\n"));
3850	}
3851
3852	if (RT_SUCCESS(rc))
3853	{
3854	LogRel(("VMSVGA: Using HW accelerated screen %u\n", pScreen->idScreen));
3855	pScreen->pHwScreen = p;
3856	}
3857	else
3858	{
3859	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: %Rrc\n", rc));
3860	vmsvga3dHwScreenDestroy(pState, p);
3861	RTMemFree(p);
3862	}
3863
3864	return rc;
3865	}
3866
3867	static DECLCALLBACK(int) vmsvga3dBackDestroyScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3868	{
3869	LogRel4(("VMSVGA: vmsvga3dBackDestroyScreen: screen %u\n", pScreen->idScreen));
3870
3871	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3872	AssertReturn(pState, VERR_NOT_SUPPORTED);
3873
3874	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3875
3876	VMSVGAHWSCREEN *p = pScreen->pHwScreen;
3877	if (p)
3878	{
3879	pScreen->pHwScreen = NULL;
3880
3881	vmsvga3dDrvNotifyHwOverlay(pThisCC, VBOX3D_NOTIFY_TYPE_HW_OVERLAY_DESTROYED, pScreen->idScreen);
3882
3883	vmsvga3dHwScreenDestroy(pState, p);
3884	RTMemFree(p);
3885	}
3886
3887	XSetErrorHandler(oldHandler);
3888
3889	return VINF_SUCCESS;
3890	}
3891
3892	/* Blit a surface to the GLX pixmap. */
3893	static DECLCALLBACK(int) vmsvga3dBackSurfaceBlitToScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen,
3894	SVGASignedRect destRect, SVGA3dSurfaceImageId srcImage,
3895	SVGASignedRect srcRect, uint32_t cRects, SVGASignedRect *paRects)
3896	{
3897	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3898	AssertReturn(pState, VERR_NOT_SUPPORTED);
3899
3900	VMSVGAHWSCREEN *p = pScreen->pHwScreen;
3901	AssertReturn(p, VERR_NOT_SUPPORTED);
3902
3903	PVMSVGA3DSURFACE pSurface;
3904	int rc = vmsvga3dSurfaceFromSid(pState, srcImage.sid, &pSurface);
3905	AssertRCReturn(rc, rc);
3906
3907	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface))
3908	{
3909	LogFunc(("src sid=%u flags=0x%x format=%d -> create texture\n", srcImage.sid, pSurface->surfaceFlags, pSurface->format));
3910	rc = vmsvga3dBackCreateTexture(pThisCC, &pState->SharedCtx, VMSVGA3D_SHARED_CTX_ID, pSurface);
3911	AssertRCReturn(rc, rc);
3912	}
3913
3914	AssertReturn(pSurface->enmOGLResType == VMSVGA3D_OGLRESTYPE_TEXTURE, VERR_NOT_SUPPORTED);
3915
3916	PVMSVGA3DMIPMAPLEVEL pMipLevel;
3917	rc = vmsvga3dMipmapLevel(pSurface, srcImage.face, srcImage.mipmap, &pMipLevel);
3918	AssertRCReturn(rc, rc);
3919
3920	/** @todo Implement. */
3921	RT_NOREF(cRects, paRects);
3922
3923	/* GLX context is changed here, so other code has to set appropriate context again. */
3924	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3925
3926	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3927
3928	Bool fSuccess = glXMakeCurrent(pState->display, p->xwindow, p->glxctx);
3929	if (fSuccess)
3930	{
3931	/* Activate the read and draw framebuffer objects. */
3932	pState->ext.glBindFramebuffer(GL_READ_FRAMEBUFFER, p->idReadFramebuffer); GLCHECK();
3933	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, p->idDrawFramebuffer); GLCHECK();
3934
3935	/* Bind the source and destination objects to the right place. */
3936	pState->ext.glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
3937	pSurface->oglId.texture, 0); GLCHECK();
3938	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
3939	p->idScreenTexture, 0); GLCHECK();
3940
3941	pState->ext.glBlitFramebuffer(srcRect.left,
3942	srcRect.top,
3943	srcRect.right,
3944	srcRect.bottom,
3945	destRect.left,
3946	destRect.top,
3947	destRect.right,
3948	destRect.bottom,
3949	GL_COLOR_BUFFER_BIT,
3950	GL_NEAREST); GLCHECK();
3951
3952	/* Reset the frame buffer association */
3953	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, 0); GLCHECK();
3954
3955	/* Update the overlay window. */
3956	glClear(GL_COLOR_BUFFER_BIT);
3957
3958	glBindTexture(GL_TEXTURE_2D, p->idScreenTexture); GLCHECK();
3959
3960	GLint const w = pScreen->cWidth;
3961	GLint const h = pScreen->cHeight;
3962
3963	glBegin(GL_QUADS);
3964	glTexCoord2f(0.0f, 0.0f); glVertex2i(0, h);
3965	glTexCoord2f(0.0f, 1.0f); glVertex2i(0, 0);
3966	glTexCoord2f(1.0f, 1.0f); glVertex2i(w, 0);
3967	glTexCoord2f(1.0f, 0.0f); glVertex2i(w, h);
3968	glEnd(); GLCHECK();
3969
3970	glBindTexture(GL_TEXTURE_2D, 0); GLCHECK();
3971
3972	glXMakeCurrent(pState->display, None, NULL);
3973	}
3974	else
3975	{
3976	LogRel4(("VMSVGA: vmsvga3dBackSurfaceBlitToScreen: screen %u, glXMakeCurrent for pixmap failed\n", pScreen->idScreen));
3977	}
3978
3979	XSetErrorHandler(oldHandler);
3980
3981	return VINF_SUCCESS;
3982	}
3983
3984	#else /* !RT_OS_LINUX */
3985
3986	static DECLCALLBACK(int) vmsvga3dBackDefineScreen(PVGASTATE pThis, PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3987	{
3988	RT_NOREF(pThis, pThisCC, pScreen);
3989	return VERR_NOT_IMPLEMENTED;
3990	}
3991
3992	static DECLCALLBACK(int) vmsvga3dBackDestroyScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3993	{
3994	RT_NOREF(pThisCC, pScreen);
3995	return VERR_NOT_IMPLEMENTED;
3996	}
3997
3998	static DECLCALLBACK(int) vmsvga3dBackSurfaceBlitToScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen,
3999	SVGASignedRect destRect, SVGA3dSurfaceImageId srcImage,
4000	SVGASignedRect srcRect, uint32_t cRects, SVGASignedRect *paRects)
4001	{
4002	RT_NOREF(pThisCC, pScreen, destRect, srcImage, srcRect, cRects, paRects);
4003	return VERR_NOT_IMPLEMENTED;
4004	}
4005	#endif
4006
4007	/**
4008	* Create a new 3d context
4009	*
4010	* @returns VBox status code.
4011	* @param pThisCC The VGA/VMSVGA state for ring-3.
4012	* @param cid Context id
4013	*/
4014	static DECLCALLBACK(int) vmsvga3dBackContextDefine(PVGASTATECC pThisCC, uint32_t cid)
4015	{
4016	return vmsvga3dContextDefineOgl(pThisCC, cid, 0/fFlags/);
4017	}
4018
4019	/**
4020	* Destroys a 3d context.
4021	*
4022	* @returns VBox status code.
4023	* @param pThisCC The VGA/VMSVGA state for ring-3.
4024	* @param pContext The context to destroy.
4025	* @param cid Context id
4026	*/
4027	static int vmsvga3dContextDestroyOgl(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid)
4028	{
4029	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4030	AssertReturn(pState, VERR_NO_MEMORY);
4031	AssertReturn(pContext, VERR_INVALID_PARAMETER);
4032	AssertReturn(pContext->id == cid, VERR_INVALID_PARAMETER);
4033	Log(("vmsvga3dContextDestroyOgl id %x\n", cid));
4034
4035	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4036
4037	if (pContext->id == VMSVGA3D_SHARED_CTX_ID)
4038	{
4039	/* Delete resources which use the shared context. */
4040	vmsvga3dOnSharedContextDestroy(pState);
4041	}
4042
4043	/* Destroy all leftover pixel shaders. */
4044	for (uint32_t i = 0; i < pContext->cPixelShaders; i++)
4045	{
4046	if (pContext->paPixelShader[i].id != SVGA3D_INVALID_ID)
4047	vmsvga3dBackShaderDestroy(pThisCC, pContext->paPixelShader[i].cid, pContext->paPixelShader[i].id, pContext->paPixelShader[i].type);
4048	}
4049	if (pContext->paPixelShader)
4050	RTMemFree(pContext->paPixelShader);
4051
4052	/* Destroy all leftover vertex shaders. */
4053	for (uint32_t i = 0; i < pContext->cVertexShaders; i++)
4054	{
4055	if (pContext->paVertexShader[i].id != SVGA3D_INVALID_ID)
4056	vmsvga3dBackShaderDestroy(pThisCC, pContext->paVertexShader[i].cid, pContext->paVertexShader[i].id, pContext->paVertexShader[i].type);
4057	}
4058	if (pContext->paVertexShader)
4059	RTMemFree(pContext->paVertexShader);
4060
4061	if (pContext->state.paVertexShaderConst)
4062	RTMemFree(pContext->state.paVertexShaderConst);
4063	if (pContext->state.paPixelShaderConst)
4064	RTMemFree(pContext->state.paPixelShaderConst);
4065
4066	if (pContext->pShaderContext)
4067	{
4068	int rc = ShaderContextDestroy(pContext->pShaderContext);
4069	AssertRC(rc);
4070	}
4071
4072	if (pContext->idFramebuffer != OPENGL_INVALID_ID)
4073	{
4074	/* Unbind the object from the framebuffer target. */
4075	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, 0 /* back buffer */);
4076	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4077	pState->ext.glDeleteFramebuffers(1, &pContext->idFramebuffer);
4078	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4079
4080	if (pContext->idReadFramebuffer != OPENGL_INVALID_ID)
4081	{
4082	pState->ext.glDeleteFramebuffers(1, &pContext->idReadFramebuffer);
4083	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4084	}
4085	if (pContext->idDrawFramebuffer != OPENGL_INVALID_ID)
4086	{
4087	pState->ext.glDeleteFramebuffers(1, &pContext->idDrawFramebuffer);
4088	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4089	}
4090	}
4091
4092	vmsvga3dBackOcclusionQueryDelete(pThisCC, pContext);
4093
4094	#ifdef RT_OS_WINDOWS
4095	wglMakeCurrent(pContext->hdc, NULL);
4096	wglDeleteContext(pContext->hglrc);
4097	ReleaseDC(pContext->hwnd, pContext->hdc);
4098
4099	/* Destroy the window we've created. */
4100	int rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_DESTROYWINDOW, (WPARAM)pContext->hwnd, 0);
4101	AssertRC(rc);
4102	#elif defined(RT_OS_DARWIN)
4103	vmsvga3dCocoaDestroyViewAndContext(pContext->cocoaView, pContext->cocoaContext);
4104	#elif defined(RT_OS_LINUX)
4105	glXMakeCurrent(pState->display, None, NULL);
4106	glXDestroyContext(pState->display, pContext->glxContext);
4107	XDestroyWindow(pState->display, pContext->window);
4108	#endif
4109
4110	memset(pContext, 0, sizeof(*pContext));
4111	pContext->id = SVGA3D_INVALID_ID;
4112
4113	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
4114	return VINF_SUCCESS;
4115	}
4116
4117	/**
4118	* Destroy an existing 3d context
4119	*
4120	* @returns VBox status code.
4121	* @param pThisCC The VGA/VMSVGA state for ring-3.
4122	* @param cid Context id
4123	*/
4124	static DECLCALLBACK(int) vmsvga3dBackContextDestroy(PVGASTATECC pThisCC, uint32_t cid)
4125	{
4126	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4127	AssertReturn(pState, VERR_WRONG_ORDER);
4128
4129	/*
4130	* Resolve the context and hand it to the common worker function.
4131	*/
4132	if ( cid < pState->cContexts
4133	&& pState->papContexts[cid]->id == cid)
4134	return vmsvga3dContextDestroyOgl(pThisCC, pState->papContexts[cid], cid);
4135
4136	AssertReturn(cid < SVGA3D_MAX_CONTEXT_IDS, VERR_INVALID_PARAMETER);
4137	return VINF_SUCCESS;
4138	}
4139
4140	/**
4141	* Worker for vmsvga3dBackChangeMode that resizes a context.
4142	*
4143	* @param pState The VMSVGA3d state.
4144	* @param pContext The context.
4145	*/
4146	static void vmsvga3dChangeModeOneContext(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
4147	{
4148	RT_NOREF(pState, pContext);
4149	/* Do nothing. The window is not used for presenting. */
4150	}
4151
4152	/* Handle resize */
4153	static DECLCALLBACK(int) vmsvga3dBackChangeMode(PVGASTATECC pThisCC)
4154	{
4155	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4156	AssertReturn(pState, VERR_NO_MEMORY);
4157
4158	/* Resize the shared context too. */
4159	if (pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
4160	vmsvga3dChangeModeOneContext(pState, &pState->SharedCtx);
4161
4162	/* Resize all active contexts. */
4163	for (uint32_t i = 0; i < pState->cContexts; i++)
4164	{
4165	PVMSVGA3DCONTEXT pContext = pState->papContexts[i];
4166	if (pContext->id != SVGA3D_INVALID_ID)
4167	vmsvga3dChangeModeOneContext(pState, pContext);
4168	}
4169
4170	return VINF_SUCCESS;
4171	}
4172
4173
4174	static DECLCALLBACK(int) vmsvga3dBackSetTransform(PVGASTATECC pThisCC, uint32_t cid, SVGA3dTransformType type, float matrix[16])
4175	{
4176	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4177	AssertReturn(pState, VERR_NO_MEMORY);
4178	bool fModelViewChanged = false;
4179
4180	Log(("vmsvga3dSetTransform cid=%u %s\n", cid, vmsvgaTransformToString(type)));
4181
4182	ASSERT_GUEST_RETURN((unsigned)type < SVGA3D_TRANSFORM_MAX, VERR_INVALID_PARAMETER);
4183
4184	PVMSVGA3DCONTEXT pContext;
4185	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4186	AssertRCReturn(rc, rc);
4187
4188	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4189
4190	/* Save this matrix for vm state save/restore. */
4191	pContext->state.aTransformState[type].fValid = true;
4192	memcpy(pContext->state.aTransformState[type].matrix, matrix, sizeof(pContext->state.aTransformState[type].matrix));
4193	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_TRANSFORM;
4194
4195	Log(("Matrix [%d %d %d %d]\n", (int)(matrix[0] * 10.0), (int)(matrix[1] * 10.0), (int)(matrix[2] * 10.0), (int)(matrix[3] * 10.0)));
4196	Log((" [%d %d %d %d]\n", (int)(matrix[4] * 10.0), (int)(matrix[5] * 10.0), (int)(matrix[6] * 10.0), (int)(matrix[7] * 10.0)));
4197	Log((" [%d %d %d %d]\n", (int)(matrix[8] * 10.0), (int)(matrix[9] * 10.0), (int)(matrix[10] * 10.0), (int)(matrix[11] * 10.0)));
4198	Log((" [%d %d %d %d]\n", (int)(matrix[12] * 10.0), (int)(matrix[13] * 10.0), (int)(matrix[14] * 10.0), (int)(matrix[15] * 10.0)));
4199
4200	switch (type)
4201	{
4202	case SVGA3D_TRANSFORM_VIEW:
4203	/* View * World = Model View */
4204	glMatrixMode(GL_MODELVIEW);
4205	glLoadMatrixf(matrix);
4206	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_WORLD].fValid)
4207	glMultMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_WORLD].matrix);
4208	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4209	fModelViewChanged = true;
4210	break;
4211
4212	case SVGA3D_TRANSFORM_PROJECTION:
4213	{
4214	rc = ShaderTransformProjection(pContext->state.RectViewPort.w, pContext->state.RectViewPort.h, matrix, false /* fPretransformed */);
4215	AssertRCReturn(rc, rc);
4216	break;
4217	}
4218
4219	case SVGA3D_TRANSFORM_TEXTURE0:
4220	glMatrixMode(GL_TEXTURE);
4221	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4222	glLoadMatrixf(matrix);
4223	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4224	break;
4225
4226	case SVGA3D_TRANSFORM_TEXTURE1:
4227	case SVGA3D_TRANSFORM_TEXTURE2:
4228	case SVGA3D_TRANSFORM_TEXTURE3:
4229	case SVGA3D_TRANSFORM_TEXTURE4:
4230	case SVGA3D_TRANSFORM_TEXTURE5:
4231	case SVGA3D_TRANSFORM_TEXTURE6:
4232	case SVGA3D_TRANSFORM_TEXTURE7:
4233	Log(("vmsvga3dSetTransform: unsupported SVGA3D_TRANSFORM_TEXTUREx transform!!\n"));
4234	return VERR_INVALID_PARAMETER;
4235
4236	case SVGA3D_TRANSFORM_WORLD:
4237	/* View * World = Model View */
4238	glMatrixMode(GL_MODELVIEW);
4239	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].fValid)
4240	glLoadMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
4241	else
4242	glLoadIdentity();
4243	glMultMatrixf(matrix);
4244	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4245	fModelViewChanged = true;
4246	break;
4247
4248	case SVGA3D_TRANSFORM_WORLD1:
4249	case SVGA3D_TRANSFORM_WORLD2:
4250	case SVGA3D_TRANSFORM_WORLD3:
4251	Log(("vmsvga3dSetTransform: unsupported SVGA3D_TRANSFORM_WORLDx transform!!\n"));
4252	return VERR_INVALID_PARAMETER;
4253
4254	default:
4255	Log(("vmsvga3dSetTransform: unknown type!!\n"));
4256	return VERR_INVALID_PARAMETER;
4257	}
4258
4259	/* Apparently we need to reset the light and clip data after modifying the modelview matrix. */
4260	if (fModelViewChanged)
4261	{
4262	/* Reprogram the clip planes. */
4263	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aClipPlane); j++)
4264	{
4265	if (pContext->state.aClipPlane[j].fValid == true)
4266	vmsvga3dBackSetClipPlane(pThisCC, cid, j, pContext->state.aClipPlane[j].plane);
4267	}
4268
4269	/* Reprogram the light data. */
4270	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aLightData); j++)
4271	{
4272	if (pContext->state.aLightData[j].fValidData == true)
4273	vmsvga3dBackSetLightData(pThisCC, cid, j, &pContext->state.aLightData[j].data);
4274	}
4275	}
4276
4277	return VINF_SUCCESS;
4278	}
4279
4280	static DECLCALLBACK(int) vmsvga3dBackSetZRange(PVGASTATECC pThisCC, uint32_t cid, SVGA3dZRange zRange)
4281	{
4282	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4283	AssertReturn(pState, VERR_NO_MEMORY);
4284
4285	Log(("vmsvga3dSetZRange cid=%u min=%d max=%d\n", cid, (uint32_t)(zRange.min * 100.0), (uint32_t)(zRange.max * 100.0)));
4286
4287	PVMSVGA3DCONTEXT pContext;
4288	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4289	AssertRCReturn(rc, rc);
4290
4291	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4292
4293	pContext->state.zRange = zRange;
4294	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_ZRANGE;
4295
4296	if (zRange.min < -1.0)
4297	zRange.min = -1.0;
4298	if (zRange.max > 1.0)
4299	zRange.max = 1.0;
4300
4301	glDepthRange((GLdouble)zRange.min, (GLdouble)zRange.max);
4302	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4303	return VINF_SUCCESS;
4304	}
4305
4306	/**
4307	* Convert SVGA blend op value to its OpenGL equivalent
4308	*/
4309	static GLenum vmsvga3dBlendOp2GL(uint32_t blendOp)
4310	{
4311	switch (blendOp)
4312	{
4313	case SVGA3D_BLENDOP_ZERO:
4314	return GL_ZERO;
4315	case SVGA3D_BLENDOP_ONE:
4316	return GL_ONE;
4317	case SVGA3D_BLENDOP_SRCCOLOR:
4318	return GL_SRC_COLOR;
4319	case SVGA3D_BLENDOP_INVSRCCOLOR:
4320	return GL_ONE_MINUS_SRC_COLOR;
4321	case SVGA3D_BLENDOP_SRCALPHA:
4322	return GL_SRC_ALPHA;
4323	case SVGA3D_BLENDOP_INVSRCALPHA:
4324	return GL_ONE_MINUS_SRC_ALPHA;
4325	case SVGA3D_BLENDOP_DESTALPHA:
4326	return GL_DST_ALPHA;
4327	case SVGA3D_BLENDOP_INVDESTALPHA:
4328	return GL_ONE_MINUS_DST_ALPHA;
4329	case SVGA3D_BLENDOP_DESTCOLOR:
4330	return GL_DST_COLOR;
4331	case SVGA3D_BLENDOP_INVDESTCOLOR:
4332	return GL_ONE_MINUS_DST_COLOR;
4333	case SVGA3D_BLENDOP_SRCALPHASAT:
4334	return GL_SRC_ALPHA_SATURATE;
4335	case SVGA3D_BLENDOP_BLENDFACTOR:
4336	return GL_CONSTANT_COLOR;
4337	case SVGA3D_BLENDOP_INVBLENDFACTOR:
4338	return GL_ONE_MINUS_CONSTANT_COLOR;
4339	default:
4340	AssertFailed();
4341	return GL_ONE;
4342	}
4343	}
4344
4345	static GLenum vmsvga3dBlendEquation2GL(uint32_t blendEq)
4346	{
4347	switch (blendEq)
4348	{
4349	case SVGA3D_BLENDEQ_ADD:
4350	return GL_FUNC_ADD;
4351	case SVGA3D_BLENDEQ_SUBTRACT:
4352	return GL_FUNC_SUBTRACT;
4353	case SVGA3D_BLENDEQ_REVSUBTRACT:
4354	return GL_FUNC_REVERSE_SUBTRACT;
4355	case SVGA3D_BLENDEQ_MINIMUM:
4356	return GL_MIN;
4357	case SVGA3D_BLENDEQ_MAXIMUM:
4358	return GL_MAX;
4359	default:
4360	/* SVGA3D_BLENDEQ_INVALID means that the render state has not been set, therefore use default. */
4361	AssertMsg(blendEq == SVGA3D_BLENDEQ_INVALID, ("blendEq=%d (%#x)\n", blendEq, blendEq));
4362	return GL_FUNC_ADD;
4363	}
4364	}
4365
4366	static GLenum vmsvgaCmpFunc2GL(uint32_t cmpFunc)
4367	{
4368	switch (cmpFunc)
4369	{
4370	case SVGA3D_CMP_NEVER:
4371	return GL_NEVER;
4372	case SVGA3D_CMP_LESS:
4373	return GL_LESS;
4374	case SVGA3D_CMP_EQUAL:
4375	return GL_EQUAL;
4376	case SVGA3D_CMP_LESSEQUAL:
4377	return GL_LEQUAL;
4378	case SVGA3D_CMP_GREATER:
4379	return GL_GREATER;
4380	case SVGA3D_CMP_NOTEQUAL:
4381	return GL_NOTEQUAL;
4382	case SVGA3D_CMP_GREATEREQUAL:
4383	return GL_GEQUAL;
4384	case SVGA3D_CMP_ALWAYS:
4385	return GL_ALWAYS;
4386	default:
4387	Assert(cmpFunc == SVGA3D_CMP_INVALID);
4388	return GL_LESS;
4389	}
4390	}
4391
4392	static GLenum vmsvgaStencipOp2GL(uint32_t stencilOp)
4393	{
4394	switch (stencilOp)
4395	{
4396	case SVGA3D_STENCILOP_KEEP:
4397	return GL_KEEP;
4398	case SVGA3D_STENCILOP_ZERO:
4399	return GL_ZERO;
4400	case SVGA3D_STENCILOP_REPLACE:
4401	return GL_REPLACE;
4402	case SVGA3D_STENCILOP_INCRSAT:
4403	return GL_INCR_WRAP;
4404	case SVGA3D_STENCILOP_DECRSAT:
4405	return GL_DECR_WRAP;
4406	case SVGA3D_STENCILOP_INVERT:
4407	return GL_INVERT;
4408	case SVGA3D_STENCILOP_INCR:
4409	return GL_INCR;
4410	case SVGA3D_STENCILOP_DECR:
4411	return GL_DECR;
4412	default:
4413	Assert(stencilOp == SVGA3D_STENCILOP_INVALID);
4414	return GL_KEEP;
4415	}
4416	}
4417
4418	static DECLCALLBACK(int) vmsvga3dBackSetRenderState(PVGASTATECC pThisCC, uint32_t cid, uint32_t cRenderStates, SVGA3dRenderState *pRenderState)
4419	{
4420	uint32_t val = UINT32_MAX; /* Shut up MSC. */
4421	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4422	AssertReturn(pState, VERR_NO_MEMORY);
4423
4424	Log(("vmsvga3dSetRenderState cid=%u cRenderStates=%d\n", cid, cRenderStates));
4425
4426	PVMSVGA3DCONTEXT pContext;
4427	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4428	AssertRCReturn(rc, rc);
4429
4430	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4431
4432	for (unsigned i = 0; i < cRenderStates; i++)
4433	{
4434	GLenum enableCap = ~(GLenum)0;
4435	Log(("vmsvga3dSetRenderState: cid=%u state=%s (%d) val=%x\n", cid, vmsvga3dGetRenderStateName(pRenderState[i].state), pRenderState[i].state, pRenderState[i].uintValue));
4436	/* Save the render state for vm state saving. */
4437	ASSERT_GUEST_RETURN((unsigned)pRenderState[i].state < SVGA3D_RS_MAX, VERR_INVALID_PARAMETER);
4438	pContext->state.aRenderState[pRenderState[i].state] = pRenderState[i];
4439
4440	switch (pRenderState[i].state)
4441	{
4442	case SVGA3D_RS_ZENABLE: /* SVGA3dBool */
4443	enableCap = GL_DEPTH_TEST;
4444	val = pRenderState[i].uintValue;
4445	break;
4446
4447	case SVGA3D_RS_ZWRITEENABLE: /* SVGA3dBool */
4448	glDepthMask(!!pRenderState[i].uintValue);
4449	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4450	break;
4451
4452	case SVGA3D_RS_ALPHATESTENABLE: /* SVGA3dBool */
4453	enableCap = GL_ALPHA_TEST;
4454	val = pRenderState[i].uintValue;
4455	break;
4456
4457	case SVGA3D_RS_DITHERENABLE: /* SVGA3dBool */
4458	enableCap = GL_DITHER;
4459	val = pRenderState[i].uintValue;
4460	break;
4461
4462	case SVGA3D_RS_FOGENABLE: /* SVGA3dBool */
4463	enableCap = GL_FOG;
4464	val = pRenderState[i].uintValue;
4465	break;
4466
4467	case SVGA3D_RS_SPECULARENABLE: /* SVGA3dBool */
4468	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4469	break;
4470
4471	case SVGA3D_RS_LIGHTINGENABLE: /* SVGA3dBool */
4472	enableCap = GL_LIGHTING;
4473	val = pRenderState[i].uintValue;
4474	break;
4475
4476	case SVGA3D_RS_NORMALIZENORMALS: /* SVGA3dBool */
4477	/* not applicable */
4478	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4479	break;
4480
4481	case SVGA3D_RS_POINTSPRITEENABLE: /* SVGA3dBool */
4482	enableCap = GL_POINT_SPRITE_ARB;
4483	val = pRenderState[i].uintValue;
4484	break;
4485
4486	case SVGA3D_RS_POINTSIZE: /* float */
4487	/** @todo we need to apply scaling for point sizes below the min or above the max; see Wine) */
4488	if (pRenderState[i].floatValue < pState->caps.flPointSize[0])
4489	pRenderState[i].floatValue = pState->caps.flPointSize[0];
4490	if (pRenderState[i].floatValue > pState->caps.flPointSize[1])
4491	pRenderState[i].floatValue = pState->caps.flPointSize[1];
4492
4493	glPointSize(pRenderState[i].floatValue);
4494	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4495	Log(("SVGA3D_RS_POINTSIZE: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4496	break;
4497
4498	case SVGA3D_RS_POINTSIZEMIN: /* float */
4499	pState->ext.glPointParameterf(GL_POINT_SIZE_MIN, pRenderState[i].floatValue);
4500	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4501	Log(("SVGA3D_RS_POINTSIZEMIN: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4502	break;
4503
4504	case SVGA3D_RS_POINTSIZEMAX: /* float */
4505	pState->ext.glPointParameterf(GL_POINT_SIZE_MAX, pRenderState[i].floatValue);
4506	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4507	Log(("SVGA3D_RS_POINTSIZEMAX: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4508	break;
4509
4510	case SVGA3D_RS_POINTSCALEENABLE: /* SVGA3dBool */
4511	case SVGA3D_RS_POINTSCALE_A: /* float */
4512	case SVGA3D_RS_POINTSCALE_B: /* float */
4513	case SVGA3D_RS_POINTSCALE_C: /* float */
4514	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4515	break;
4516
4517	case SVGA3D_RS_AMBIENT: /* SVGA3dColor */
4518	{
4519	GLfloat color[4]; /* red, green, blue, alpha */
4520
4521	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &color[0], &color[1], &color[2], &color[3]);
4522
4523	glLightModelfv(GL_LIGHT_MODEL_AMBIENT, color);
4524	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4525	break;
4526	}
4527
4528	case SVGA3D_RS_CLIPPLANEENABLE: /* SVGA3dClipPlanes */
4529	{
4530	for (uint32_t j = 0; j < SVGA3D_NUM_CLIPPLANES; j++)
4531	{
4532	if (pRenderState[i].uintValue & RT_BIT(j))
4533	glEnable(GL_CLIP_PLANE0 + j);
4534	else
4535	glDisable(GL_CLIP_PLANE0 + j);
4536	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4537	}
4538	break;
4539	}
4540
4541	case SVGA3D_RS_FOGCOLOR: /* SVGA3dColor */
4542	{
4543	GLfloat color[4]; /* red, green, blue, alpha */
4544
4545	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &color[0], &color[1], &color[2], &color[3]);
4546
4547	glFogfv(GL_FOG_COLOR, color);
4548	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4549	break;
4550	}
4551
4552	case SVGA3D_RS_FOGSTART: /* float */
4553	glFogf(GL_FOG_START, pRenderState[i].floatValue);
4554	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4555	break;
4556
4557	case SVGA3D_RS_FOGEND: /* float */
4558	glFogf(GL_FOG_END, pRenderState[i].floatValue);
4559	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4560	break;
4561
4562	case SVGA3D_RS_FOGDENSITY: /* float */
4563	glFogf(GL_FOG_DENSITY, pRenderState[i].floatValue);
4564	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4565	break;
4566
4567	case SVGA3D_RS_RANGEFOGENABLE: /* SVGA3dBool */
4568	glFogi(GL_FOG_COORD_SRC, (pRenderState[i].uintValue) ? GL_FOG_COORD : GL_FRAGMENT_DEPTH);
4569	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4570	break;
4571
4572	case SVGA3D_RS_FOGMODE: /* SVGA3dFogMode */
4573	{
4574	SVGA3dFogMode mode;
4575	mode.uintValue = pRenderState[i].uintValue;
4576
4577	enableCap = GL_FOG_MODE;
4578	switch (mode.function)
4579	{
4580	case SVGA3D_FOGFUNC_EXP:
4581	val = GL_EXP;
4582	break;
4583	case SVGA3D_FOGFUNC_EXP2:
4584	val = GL_EXP2;
4585	break;
4586	case SVGA3D_FOGFUNC_LINEAR:
4587	val = GL_LINEAR;
4588	break;
4589	default:
4590	AssertMsgFailedReturn(("Unexpected fog function %d\n", mode.function), VERR_INTERNAL_ERROR);
4591	break;
4592	}
4593
4594	/** @todo how to switch between vertex and pixel fog modes??? */
4595	Assert(mode.type == SVGA3D_FOGTYPE_PIXEL);
4596	#if 0
4597	/* The fog type determines the render state. */
4598	switch (mode.type)
4599	{
4600	case SVGA3D_FOGTYPE_VERTEX:
4601	renderState = D3DRS_FOGVERTEXMODE;
4602	break;
4603	case SVGA3D_FOGTYPE_PIXEL:
4604	renderState = D3DRS_FOGTABLEMODE;
4605	break;
4606	default:
4607	AssertMsgFailedReturn(("Unexpected fog type %d\n", mode.type), VERR_INTERNAL_ERROR);
4608	break;
4609	}
4610	#endif
4611
4612	/* Set the fog base to depth or range. */
4613	switch (mode.base)
4614	{
4615	case SVGA3D_FOGBASE_DEPTHBASED:
4616	glFogi(GL_FOG_COORD_SRC, GL_FRAGMENT_DEPTH);
4617	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4618	break;
4619	case SVGA3D_FOGBASE_RANGEBASED:
4620	glFogi(GL_FOG_COORD_SRC, GL_FOG_COORD);
4621	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4622	break;
4623	default:
4624	/* ignore */
4625	AssertMsgFailed(("Unexpected fog base %d\n", mode.base));
4626	break;
4627	}
4628	break;
4629	}
4630
4631	case SVGA3D_RS_FILLMODE: /* SVGA3dFillMode */
4632	{
4633	SVGA3dFillMode mode;
4634
4635	mode.uintValue = pRenderState[i].uintValue;
4636
4637	switch (mode.mode)
4638	{
4639	case SVGA3D_FILLMODE_POINT:
4640	val = GL_POINT;
4641	break;
4642	case SVGA3D_FILLMODE_LINE:
4643	val = GL_LINE;
4644	break;
4645	case SVGA3D_FILLMODE_FILL:
4646	val = GL_FILL;
4647	break;
4648	default:
4649	AssertMsgFailedReturn(("Unexpected fill mode %d\n", mode.mode), VERR_INTERNAL_ERROR);
4650	break;
4651	}
4652	/* Only front and back faces. Also recent Mesa guest drivers initialize the 'face' to zero. */
4653	ASSERT_GUEST(mode.face == SVGA3D_FACE_FRONT_BACK \|\| mode.face == SVGA3D_FACE_INVALID);
4654	glPolygonMode(GL_FRONT_AND_BACK, val);
4655	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4656	break;
4657	}
4658
4659	case SVGA3D_RS_SHADEMODE: /* SVGA3dShadeMode */
4660	switch (pRenderState[i].uintValue)
4661	{
4662	case SVGA3D_SHADEMODE_FLAT:
4663	val = GL_FLAT;
4664	break;
4665
4666	case SVGA3D_SHADEMODE_SMOOTH:
4667	val = GL_SMOOTH;
4668	break;
4669
4670	default:
4671	AssertMsgFailedReturn(("Unexpected shade mode %d\n", pRenderState[i].uintValue), VERR_INTERNAL_ERROR);
4672	break;
4673	}
4674
4675	glShadeModel(val);
4676	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4677	break;
4678
4679	case SVGA3D_RS_LINEPATTERN: /* SVGA3dLinePattern */
4680	/* No longer supported by d3d; mesagl comments suggest not all backends support it */
4681	/** @todo */
4682	Log(("WARNING: SVGA3D_RS_LINEPATTERN %x not supported!!\n", pRenderState[i].uintValue));
4683	/*
4684	renderState = D3DRS_LINEPATTERN;
4685	val = pRenderState[i].uintValue;
4686	*/
4687	break;
4688
4689	case SVGA3D_RS_ANTIALIASEDLINEENABLE: /* SVGA3dBool */
4690	enableCap = GL_LINE_SMOOTH;
4691	val = pRenderState[i].uintValue;
4692	break;
4693
4694	case SVGA3D_RS_LINEWIDTH: /* float */
4695	glLineWidth(pRenderState[i].floatValue);
4696	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4697	break;
4698
4699	case SVGA3D_RS_SEPARATEALPHABLENDENABLE: /* SVGA3dBool */
4700	{
4701	/* Refresh the blending state based on the new enable setting.
4702	* This will take existing states and set them using either glBlend* or glBlend*Separate.
4703	*/
4704	static SVGA3dRenderStateName const saRefreshState[] =
4705	{
4706	SVGA3D_RS_SRCBLEND,
4707	SVGA3D_RS_BLENDEQUATION
4708	};
4709	SVGA3dRenderState renderstate[RT_ELEMENTS(saRefreshState)];
4710	for (uint32_t j = 0; j < RT_ELEMENTS(saRefreshState); ++j)
4711	{
4712	renderstate[j].state = saRefreshState[j];
4713	renderstate[j].uintValue = pContext->state.aRenderState[saRefreshState[j]].uintValue;
4714	}
4715
4716	rc = vmsvga3dBackSetRenderState(pThisCC, cid, 2, renderstate);
4717	AssertRCReturn(rc, rc);
4718
4719	if (pContext->state.aRenderState[SVGA3D_RS_BLENDENABLE].uintValue != 0)
4720	continue; /* Ignore if blend is enabled */
4721	/* Apply SVGA3D_RS_SEPARATEALPHABLENDENABLE as SVGA3D_RS_BLENDENABLE */
4722	} RT_FALL_THRU();
4723
4724	case SVGA3D_RS_BLENDENABLE: /* SVGA3dBool */
4725	enableCap = GL_BLEND;
4726	val = pRenderState[i].uintValue;
4727	break;
4728
4729	case SVGA3D_RS_SRCBLENDALPHA: /* SVGA3dBlendOp */
4730	case SVGA3D_RS_DSTBLENDALPHA: /* SVGA3dBlendOp */
4731	case SVGA3D_RS_SRCBLEND: /* SVGA3dBlendOp */
4732	case SVGA3D_RS_DSTBLEND: /* SVGA3dBlendOp */
4733	{
4734	GLint srcRGB, srcAlpha, dstRGB, dstAlpha;
4735	GLint blendop = vmsvga3dBlendOp2GL(pRenderState[i].uintValue);
4736
4737	glGetIntegerv(GL_BLEND_SRC_RGB, &srcRGB);
4738	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4739	glGetIntegerv(GL_BLEND_DST_RGB, &dstRGB);
4740	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4741	glGetIntegerv(GL_BLEND_DST_ALPHA, &dstAlpha);
4742	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4743	glGetIntegerv(GL_BLEND_SRC_ALPHA, &srcAlpha);
4744	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4745
4746	switch (pRenderState[i].state)
4747	{
4748	case SVGA3D_RS_SRCBLEND:
4749	srcRGB = blendop;
4750	break;
4751	case SVGA3D_RS_DSTBLEND:
4752	dstRGB = blendop;
4753	break;
4754	case SVGA3D_RS_SRCBLENDALPHA:
4755	srcAlpha = blendop;
4756	break;
4757	case SVGA3D_RS_DSTBLENDALPHA:
4758	dstAlpha = blendop;
4759	break;
4760	default:
4761	/* not possible; shut up gcc */
4762	AssertFailed();
4763	break;
4764	}
4765
4766	if (pContext->state.aRenderState[SVGA3D_RS_SEPARATEALPHABLENDENABLE].uintValue != 0)
4767	pState->ext.glBlendFuncSeparate(srcRGB, dstRGB, srcAlpha, dstAlpha);
4768	else
4769	glBlendFunc(srcRGB, dstRGB);
4770	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4771	break;
4772	}
4773
4774	case SVGA3D_RS_BLENDEQUATIONALPHA: /* SVGA3dBlendEquation */
4775	case SVGA3D_RS_BLENDEQUATION: /* SVGA3dBlendEquation */
4776	if (pContext->state.aRenderState[SVGA3D_RS_SEPARATEALPHABLENDENABLE].uintValue != 0)
4777	{
4778	GLenum const modeRGB = vmsvga3dBlendEquation2GL(pContext->state.aRenderState[SVGA3D_RS_BLENDEQUATION].uintValue);
4779	GLenum const modeAlpha = vmsvga3dBlendEquation2GL(pContext->state.aRenderState[SVGA3D_RS_BLENDEQUATIONALPHA].uintValue);
4780	pState->ext.glBlendEquationSeparate(modeRGB, modeAlpha);
4781	}
4782	else
4783	{
4784	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x102
4785	glBlendEquation(vmsvga3dBlendEquation2GL(pRenderState[i].uintValue));
4786	#else
4787	pState->ext.glBlendEquation(vmsvga3dBlendEquation2GL(pRenderState[i].uintValue));
4788	#endif
4789	}
4790	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4791	break;
4792
4793	case SVGA3D_RS_BLENDCOLOR: /* SVGA3dColor */
4794	{
4795	GLfloat red, green, blue, alpha;
4796
4797	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &red, &green, &blue, &alpha);
4798
4799	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x102
4800	glBlendColor(red, green, blue, alpha);
4801	#else
4802	pState->ext.glBlendColor(red, green, blue, alpha);
4803	#endif
4804	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4805	break;
4806	}
4807
4808	case SVGA3D_RS_CULLMODE: /* SVGA3dFace */
4809	{
4810	GLenum mode = GL_BACK; /* default for OpenGL */
4811
4812	switch (pRenderState[i].uintValue)
4813	{
4814	case SVGA3D_FACE_NONE:
4815	break;
4816	case SVGA3D_FACE_FRONT:
4817	mode = GL_FRONT;
4818	break;
4819	case SVGA3D_FACE_BACK:
4820	mode = GL_BACK;
4821	break;
4822	case SVGA3D_FACE_FRONT_BACK:
4823	mode = GL_FRONT_AND_BACK;
4824	break;
4825	default:
4826	AssertMsgFailedReturn(("Unexpected cull mode %d\n", pRenderState[i].uintValue), VERR_INTERNAL_ERROR);
4827	break;
4828	}
4829	enableCap = GL_CULL_FACE;
4830	if (pRenderState[i].uintValue != SVGA3D_FACE_NONE)
4831	{
4832	glCullFace(mode);
4833	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4834	val = 1;
4835	}
4836	else
4837	val = 0;
4838	break;
4839	}
4840
4841	case SVGA3D_RS_ZFUNC: /* SVGA3dCmpFunc */
4842	glDepthFunc(vmsvgaCmpFunc2GL(pRenderState[i].uintValue));
4843	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4844	break;
4845
4846	case SVGA3D_RS_ALPHAFUNC: /* SVGA3dCmpFunc */
4847	{
4848	GLclampf ref;
4849
4850	glGetFloatv(GL_ALPHA_TEST_REF, &ref);
4851	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4852	glAlphaFunc(vmsvgaCmpFunc2GL(pRenderState[i].uintValue), ref);
4853	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4854	break;
4855	}
4856
4857	case SVGA3D_RS_ALPHAREF: /* float (0.0 .. 1.0) */
4858	{
4859	GLint func;
4860
4861	glGetIntegerv(GL_ALPHA_TEST_FUNC, &func);
4862	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4863	glAlphaFunc(func, pRenderState[i].floatValue);
4864	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4865	break;
4866	}
4867
4868	case SVGA3D_RS_STENCILENABLE2SIDED: /* SVGA3dBool */
4869	{
4870	/* Refresh the stencil state based on the new enable setting.
4871	* This will take existing states and set them using either glStencil or glStencil*Separate.
4872	*/
4873	static SVGA3dRenderStateName const saRefreshState[] =
4874	{
4875	SVGA3D_RS_STENCILFUNC,
4876	SVGA3D_RS_STENCILFAIL,
4877	SVGA3D_RS_CCWSTENCILFUNC,
4878	SVGA3D_RS_CCWSTENCILFAIL
4879	};
4880	SVGA3dRenderState renderstate[RT_ELEMENTS(saRefreshState)];
4881	for (uint32_t j = 0; j < RT_ELEMENTS(saRefreshState); ++j)
4882	{
4883	renderstate[j].state = saRefreshState[j];
4884	renderstate[j].uintValue = pContext->state.aRenderState[saRefreshState[j]].uintValue;
4885	}
4886
4887	rc = vmsvga3dBackSetRenderState(pThisCC, cid, RT_ELEMENTS(renderstate), renderstate);
4888	AssertRCReturn(rc, rc);
4889
4890	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE].uintValue != 0)
4891	continue; /* Ignore if stencil is enabled */
4892	/* Apply SVGA3D_RS_STENCILENABLE2SIDED as SVGA3D_RS_STENCILENABLE. */
4893	} RT_FALL_THRU();
4894
4895	case SVGA3D_RS_STENCILENABLE: /* SVGA3dBool */
4896	enableCap = GL_STENCIL_TEST;
4897	val = pRenderState[i].uintValue;
4898	break;
4899
4900	case SVGA3D_RS_STENCILFUNC: /* SVGA3dCmpFunc */
4901	case SVGA3D_RS_STENCILREF: /* uint32_t */
4902	case SVGA3D_RS_STENCILMASK: /* uint32_t */
4903	{
4904	GLint func, ref;
4905	GLuint mask;
4906
4907	/* Query current values to have all parameters for glStencilFunc[Separate]. */
4908	glGetIntegerv(GL_STENCIL_FUNC, &func);
4909	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4910	glGetIntegerv(GL_STENCIL_VALUE_MASK, (GLint *)&mask);
4911	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4912	glGetIntegerv(GL_STENCIL_REF, &ref);
4913	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4914
4915	/* Update the changed value. */
4916	switch (pRenderState[i].state)
4917	{
4918	case SVGA3D_RS_STENCILFUNC: /* SVGA3dCmpFunc */
4919	func = vmsvgaCmpFunc2GL(pRenderState[i].uintValue);
4920	break;
4921
4922	case SVGA3D_RS_STENCILREF: /* uint32_t */
4923	ref = pRenderState[i].uintValue;
4924	break;
4925
4926	case SVGA3D_RS_STENCILMASK: /* uint32_t */
4927	mask = pRenderState[i].uintValue;
4928	break;
4929
4930	default:
4931	/* not possible; shut up gcc */
4932	AssertFailed();
4933	break;
4934	}
4935
4936	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE2SIDED].uintValue != 0)
4937	{
4938	pState->ext.glStencilFuncSeparate(GL_FRONT, func, ref, mask);
4939	}
4940	else
4941	{
4942	glStencilFunc(func, ref, mask);
4943	}
4944	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4945	break;
4946	}
4947
4948	case SVGA3D_RS_STENCILWRITEMASK: /* uint32_t */
4949	glStencilMask(pRenderState[i].uintValue);
4950	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4951	break;
4952
4953	case SVGA3D_RS_STENCILFAIL: /* SVGA3dStencilOp */
4954	case SVGA3D_RS_STENCILZFAIL: /* SVGA3dStencilOp */
4955	case SVGA3D_RS_STENCILPASS: /* SVGA3dStencilOp */
4956	{
4957	GLint sfail, dpfail, dppass;
4958	GLenum const stencilop = vmsvgaStencipOp2GL(pRenderState[i].uintValue);
4959
4960	glGetIntegerv(GL_STENCIL_FAIL, &sfail);
4961	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4962	glGetIntegerv(GL_STENCIL_PASS_DEPTH_FAIL, &dpfail);
4963	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4964	glGetIntegerv(GL_STENCIL_PASS_DEPTH_PASS, &dppass);
4965	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4966
4967	switch (pRenderState[i].state)
4968	{
4969	case SVGA3D_RS_STENCILFAIL: /* SVGA3dStencilOp */
4970	sfail = stencilop;
4971	break;
4972	case SVGA3D_RS_STENCILZFAIL: /* SVGA3dStencilOp */
4973	dpfail = stencilop;
4974	break;
4975	case SVGA3D_RS_STENCILPASS: /* SVGA3dStencilOp */
4976	dppass = stencilop;
4977	break;
4978	default:
4979	/* not possible; shut up gcc */
4980	AssertFailed();
4981	break;
4982	}
4983	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE2SIDED].uintValue != 0)
4984	{
4985	pState->ext.glStencilOpSeparate(GL_FRONT, sfail, dpfail, dppass);
4986	}
4987	else
4988	{
4989	glStencilOp(sfail, dpfail, dppass);
4990	}
4991	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4992	break;
4993	}
4994
4995	case SVGA3D_RS_CCWSTENCILFUNC: /* SVGA3dCmpFunc */
4996	{
4997	GLint ref;
4998	GLuint mask;
4999	GLint const func = vmsvgaCmpFunc2GL(pRenderState[i].uintValue);
5000
5001	/* GL_STENCIL_VALUE_MASK and GL_STENCIL_REF are the same for both GL_FRONT and GL_BACK. */
5002	glGetIntegerv(GL_STENCIL_VALUE_MASK, (GLint *)&mask);
5003	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5004	glGetIntegerv(GL_STENCIL_REF, &ref);
5005	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5006
5007	pState->ext.glStencilFuncSeparate(GL_BACK, func, ref, mask);
5008	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5009	break;
5010	}
5011
5012	case SVGA3D_RS_CCWSTENCILFAIL: /* SVGA3dStencilOp */
5013	case SVGA3D_RS_CCWSTENCILZFAIL: /* SVGA3dStencilOp */
5014	case SVGA3D_RS_CCWSTENCILPASS: /* SVGA3dStencilOp */
5015	{
5016	GLint sfail, dpfail, dppass;
5017	GLenum const stencilop = vmsvgaStencipOp2GL(pRenderState[i].uintValue);
5018
5019	glGetIntegerv(GL_STENCIL_BACK_FAIL, &sfail);
5020	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5021	glGetIntegerv(GL_STENCIL_BACK_PASS_DEPTH_FAIL, &dpfail);
5022	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5023	glGetIntegerv(GL_STENCIL_BACK_PASS_DEPTH_PASS, &dppass);
5024	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5025
5026	switch (pRenderState[i].state)
5027	{
5028	case SVGA3D_RS_CCWSTENCILFAIL: /* SVGA3dStencilOp */
5029	sfail = stencilop;
5030	break;
5031	case SVGA3D_RS_CCWSTENCILZFAIL: /* SVGA3dStencilOp */
5032	dpfail = stencilop;
5033	break;
5034	case SVGA3D_RS_CCWSTENCILPASS: /* SVGA3dStencilOp */
5035	dppass = stencilop;
5036	break;
5037	default:
5038	/* not possible; shut up gcc */
5039	AssertFailed();
5040	break;
5041	}
5042	pState->ext.glStencilOpSeparate(GL_BACK, sfail, dpfail, dppass);
5043	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5044	break;
5045	}
5046
5047	case SVGA3D_RS_ZBIAS: /* float */
5048	/** @todo unknown meaning; depth bias is not identical
5049	renderState = D3DRS_DEPTHBIAS;
5050	val = pRenderState[i].uintValue;
5051	*/
5052	Log(("vmsvga3dSetRenderState: WARNING unsupported SVGA3D_RS_ZBIAS\n"));
5053	break;
5054
5055	case SVGA3D_RS_DEPTHBIAS: /* float */
5056	{
5057	GLfloat factor;
5058
5059	/** @todo not sure if the d3d & ogl definitions are identical. */
5060
5061	/* Do not change the factor part. */
5062	glGetFloatv(GL_POLYGON_OFFSET_FACTOR, &factor);
5063	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5064
5065	glPolygonOffset(factor, pRenderState[i].floatValue);
5066	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5067	break;
5068	}
5069
5070	case SVGA3D_RS_SLOPESCALEDEPTHBIAS: /* float */
5071	{
5072	GLfloat units;
5073
5074	/** @todo not sure if the d3d & ogl definitions are identical. */
5075
5076	/* Do not change the factor part. */
5077	glGetFloatv(GL_POLYGON_OFFSET_UNITS, &units);
5078	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5079
5080	glPolygonOffset(pRenderState[i].floatValue, units);
5081	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5082	break;
5083	}
5084
5085	case SVGA3D_RS_COLORWRITEENABLE: /* SVGA3dColorMask */
5086	{
5087	GLboolean red, green, blue, alpha;
5088	SVGA3dColorMask mask;
5089
5090	mask.uintValue = pRenderState[i].uintValue;
5091
5092	red = mask.red;
5093	green = mask.green;
5094	blue = mask.blue;
5095	alpha = mask.alpha;
5096
5097	glColorMask(red, green, blue, alpha);
5098	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5099	break;
5100	}
5101
5102	case SVGA3D_RS_COLORWRITEENABLE1: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
5103	case SVGA3D_RS_COLORWRITEENABLE2: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
5104	case SVGA3D_RS_COLORWRITEENABLE3: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
5105	Log(("vmsvga3dSetRenderState: WARNING SVGA3D_RS_COLORWRITEENABLEx not supported!!\n"));
5106	break;
5107
5108	case SVGA3D_RS_SCISSORTESTENABLE: /* SVGA3dBool */
5109	enableCap = GL_SCISSOR_TEST;
5110	val = pRenderState[i].uintValue;
5111	break;
5112
5113	#if 0
5114	case SVGA3D_RS_DIFFUSEMATERIALSOURCE: /* SVGA3dVertexMaterial */
5115	AssertCompile(D3DMCS_COLOR2 == SVGA3D_VERTEXMATERIAL_SPECULAR);
5116	renderState = D3DRS_DIFFUSEMATERIALSOURCE;
5117	val = pRenderState[i].uintValue;
5118	break;
5119
5120	case SVGA3D_RS_SPECULARMATERIALSOURCE: /* SVGA3dVertexMaterial */
5121	renderState = D3DRS_SPECULARMATERIALSOURCE;
5122	val = pRenderState[i].uintValue;
5123	break;
5124
5125	case SVGA3D_RS_AMBIENTMATERIALSOURCE: /* SVGA3dVertexMaterial */
5126	renderState = D3DRS_AMBIENTMATERIALSOURCE;
5127	val = pRenderState[i].uintValue;
5128	break;
5129
5130	case SVGA3D_RS_EMISSIVEMATERIALSOURCE: /* SVGA3dVertexMaterial */
5131	renderState = D3DRS_EMISSIVEMATERIALSOURCE;
5132	val = pRenderState[i].uintValue;
5133	break;
5134	#endif
5135
5136	case SVGA3D_RS_WRAP3: /* SVGA3dWrapFlags */
5137	case SVGA3D_RS_WRAP4: /* SVGA3dWrapFlags */
5138	case SVGA3D_RS_WRAP5: /* SVGA3dWrapFlags */
5139	case SVGA3D_RS_WRAP6: /* SVGA3dWrapFlags */
5140	case SVGA3D_RS_WRAP7: /* SVGA3dWrapFlags */
5141	case SVGA3D_RS_WRAP8: /* SVGA3dWrapFlags */
5142	case SVGA3D_RS_WRAP9: /* SVGA3dWrapFlags */
5143	case SVGA3D_RS_WRAP10: /* SVGA3dWrapFlags */
5144	case SVGA3D_RS_WRAP11: /* SVGA3dWrapFlags */
5145	case SVGA3D_RS_WRAP12: /* SVGA3dWrapFlags */
5146	case SVGA3D_RS_WRAP13: /* SVGA3dWrapFlags */
5147	case SVGA3D_RS_WRAP14: /* SVGA3dWrapFlags */
5148	case SVGA3D_RS_WRAP15: /* SVGA3dWrapFlags */
5149	Log(("vmsvga3dSetRenderState: WARNING unsupported SVGA3D_WRAPx (x >= 3)\n"));
5150	break;
5151
5152	case SVGA3D_RS_LASTPIXEL: /* SVGA3dBool */
5153	case SVGA3D_RS_TWEENFACTOR: /* float */
5154	case SVGA3D_RS_INDEXEDVERTEXBLENDENABLE: /* SVGA3dBool */
5155	case SVGA3D_RS_VERTEXBLEND: /* SVGA3dVertexBlendFlags */
5156	Log(("vmsvga3dSetRenderState: WARNING not applicable!!\n"));
5157	break;
5158
5159	case SVGA3D_RS_MULTISAMPLEANTIALIAS: /* SVGA3dBool */
5160	enableCap = GL_MULTISAMPLE;
5161	val = pRenderState[i].uintValue;
5162	break;
5163
5164	case SVGA3D_RS_MULTISAMPLEMASK: /* uint32_t */
5165	Log(("vmsvga3dSetRenderState: WARNING not applicable??!!\n"));
5166	break;
5167
5168	case SVGA3D_RS_COORDINATETYPE: /* SVGA3dCoordinateType */
5169	Assert(pRenderState[i].uintValue == SVGA3D_COORDINATE_LEFTHANDED);
5170	/** @todo setup a view matrix to scale the world space by -1 in the z-direction for right handed coordinates. */
5171	/*
5172	renderState = D3DRS_COORDINATETYPE;
5173	val = pRenderState[i].uintValue;
5174	*/
5175	break;
5176
5177	case SVGA3D_RS_FRONTWINDING: /* SVGA3dFrontWinding */
5178	Assert(pRenderState[i].uintValue == SVGA3D_FRONTWINDING_CW);
5179	/* Invert the selected mode because of y-inversion (?) */
5180	glFrontFace((pRenderState[i].uintValue != SVGA3D_FRONTWINDING_CW) ? GL_CW : GL_CCW);
5181	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5182	break;
5183
5184	case SVGA3D_RS_OUTPUTGAMMA: /* float */
5185	//AssertFailed();
5186	/*
5187	D3DRS_SRGBWRITEENABLE ??
5188	renderState = D3DRS_OUTPUTGAMMA;
5189	val = pRenderState[i].uintValue;
5190	*/
5191	break;
5192
5193	#if 0
5194
5195	case SVGA3D_RS_VERTEXMATERIALENABLE: /* SVGA3dBool */
5196	//AssertFailed();
5197	renderState = D3DRS_INDEXEDVERTEXBLENDENABLE; /* correct?? */
5198	val = pRenderState[i].uintValue;
5199	break;
5200
5201	case SVGA3D_RS_TEXTUREFACTOR: /* SVGA3dColor */
5202	renderState = D3DRS_TEXTUREFACTOR;
5203	val = pRenderState[i].uintValue;
5204	break;
5205
5206	case SVGA3D_RS_LOCALVIEWER: /* SVGA3dBool */
5207	renderState = D3DRS_LOCALVIEWER;
5208	val = pRenderState[i].uintValue;
5209	break;
5210
5211	case SVGA3D_RS_ZVISIBLE: /* SVGA3dBool */
5212	AssertFailed();
5213	/*
5214	renderState = D3DRS_ZVISIBLE;
5215	val = pRenderState[i].uintValue;
5216	*/
5217	break;
5218
5219	case SVGA3D_RS_CLIPPING: /* SVGA3dBool */
5220	renderState = D3DRS_CLIPPING;
5221	val = pRenderState[i].uintValue;
5222	break;
5223
5224	case SVGA3D_RS_WRAP0: /* SVGA3dWrapFlags */
5225	glTexParameter GL_TEXTURE_WRAP_S
5226	Assert(SVGA3D_WRAPCOORD_3 == D3DWRAPCOORD_3);
5227	renderState = D3DRS_WRAP0;
5228	val = pRenderState[i].uintValue;
5229	break;
5230
5231	case SVGA3D_RS_WRAP1: /* SVGA3dWrapFlags */
5232	glTexParameter GL_TEXTURE_WRAP_T
5233	renderState = D3DRS_WRAP1;
5234	val = pRenderState[i].uintValue;
5235	break;
5236
5237	case SVGA3D_RS_WRAP2: /* SVGA3dWrapFlags */
5238	glTexParameter GL_TEXTURE_WRAP_R
5239	renderState = D3DRS_WRAP2;
5240	val = pRenderState[i].uintValue;
5241	break;
5242
5243
5244	case SVGA3D_RS_SEPARATEALPHABLENDENABLE: /* SVGA3dBool */
5245	renderState = D3DRS_SEPARATEALPHABLENDENABLE;
5246	val = pRenderState[i].uintValue;
5247	break;
5248
5249
5250	case SVGA3D_RS_BLENDEQUATIONALPHA: /* SVGA3dBlendEquation */
5251	renderState = D3DRS_BLENDOPALPHA;
5252	val = pRenderState[i].uintValue;
5253	break;
5254
5255	case SVGA3D_RS_TRANSPARENCYANTIALIAS: /* SVGA3dTransparencyAntialiasType */
5256	AssertFailed();
5257	/*
5258	renderState = D3DRS_TRANSPARENCYANTIALIAS;
5259	val = pRenderState[i].uintValue;
5260	*/
5261	break;
5262
5263	#endif
5264	default:
5265	AssertFailed();
5266	break;
5267	}
5268
5269	if (enableCap != ~(GLenum)0)
5270	{
5271	if (val)
5272	glEnable(enableCap);
5273	else
5274	glDisable(enableCap);
5275	}
5276	}
5277
5278	return VINF_SUCCESS;
5279	}
5280
5281	static DECLCALLBACK(int) vmsvga3dBackSetRenderTarget(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRenderTargetType type, SVGA3dSurfaceImageId target)
5282	{
5283	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5284
5285	AssertReturn(pState, VERR_NO_MEMORY);
5286	AssertReturn((unsigned)type < SVGA3D_RT_MAX, VERR_INVALID_PARAMETER);
5287
5288	LogFunc(("cid=%u type=%x sid=%u\n", cid, type, target.sid));
5289
5290	PVMSVGA3DCONTEXT pContext;
5291	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5292	AssertRCReturn(rc, rc);
5293
5294	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5295
5296	/* Save for vm state save/restore. */
5297	pContext->state.aRenderTargets[type] = target.sid;
5298
5299	if (target.sid == SVGA3D_INVALID_ID)
5300	{
5301	/* Disable render target. */
5302	switch (type)
5303	{
5304	case SVGA3D_RT_DEPTH:
5305	case SVGA3D_RT_STENCIL:
5306	pState->ext.glFramebufferRenderbuffer(GL_FRAMEBUFFER, (type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
5307	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5308	break;
5309
5310	case SVGA3D_RT_COLOR0:
5311	case SVGA3D_RT_COLOR1:
5312	case SVGA3D_RT_COLOR2:
5313	case SVGA3D_RT_COLOR3:
5314	case SVGA3D_RT_COLOR4:
5315	case SVGA3D_RT_COLOR5:
5316	case SVGA3D_RT_COLOR6:
5317	case SVGA3D_RT_COLOR7:
5318	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + type - SVGA3D_RT_COLOR0, 0, 0, 0);
5319	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5320	break;
5321
5322	default:
5323	AssertFailedReturn(VERR_INVALID_PARAMETER);
5324	}
5325	return VINF_SUCCESS;
5326	}
5327
5328	PVMSVGA3DSURFACE pRenderTarget;
5329	rc = vmsvga3dSurfaceFromSid(pState, target.sid, &pRenderTarget);
5330	AssertRCReturn(rc, rc);
5331
5332	switch (type)
5333	{
5334	case SVGA3D_RT_DEPTH:
5335	case SVGA3D_RT_STENCIL:
5336	#if 1
5337	/* A texture surface can be used as a render target to fill it and later on used as a texture. */
5338	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5339	{
5340	LogFunc(("create depth texture to be used as render target; surface id=%x type=%d format=%d -> create texture\n",
5341	target.sid, pRenderTarget->surfaceFlags, pRenderTarget->format));
5342	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pRenderTarget);
5343	AssertRCReturn(rc, rc);
5344	}
5345
5346	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5347	Assert(!pRenderTarget->fDirty);
5348
5349	pRenderTarget->surfaceFlags \|= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
5350
5351	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER,
5352	(type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT,
5353	GL_TEXTURE_2D, pRenderTarget->oglId.texture, target.mipmap);
5354	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5355	#else
5356	AssertReturn(target.mipmap == 0, VERR_INVALID_PARAMETER);
5357	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5358	{
5359	Log(("vmsvga3dSetRenderTarget: create renderbuffer to be used as render target; surface id=%x type=%d format=%d\n", target.sid, pRenderTarget->surfaceFlags, pRenderTarget->internalFormatGL));
5360	pContext = &pState->SharedCtx;
5361	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5362
5363	pState->ext.glGenRenderbuffers(1, &pRenderTarget->oglId.renderbuffer);
5364	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5365	pSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_RENDERBUFFER;
5366
5367	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5368	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5369
5370	pState->ext.glRenderbufferStorage(GL_RENDERBUFFER,
5371	pRenderTarget->internalFormatGL,
5372	pRenderTarget->paMipmapLevels[0].mipmapSize.width,
5373	pRenderTarget->paMipmapLevels[0].mipmapSize.height);
5374	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5375
5376	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, OPENGL_INVALID_ID);
5377	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5378
5379	pContext = pState->papContexts[cid];
5380	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5381	}
5382
5383	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5384	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5385	Assert(!pRenderTarget->fDirty);
5386	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5387
5388	pRenderTarget->surfaceFlags \|= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
5389
5390	pState->ext.glFramebufferRenderbuffer(GL_FRAMEBUFFER,
5391	(type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT,
5392	GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5393	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5394	#endif
5395	break;
5396
5397	case SVGA3D_RT_COLOR0:
5398	case SVGA3D_RT_COLOR1:
5399	case SVGA3D_RT_COLOR2:
5400	case SVGA3D_RT_COLOR3:
5401	case SVGA3D_RT_COLOR4:
5402	case SVGA3D_RT_COLOR5:
5403	case SVGA3D_RT_COLOR6:
5404	case SVGA3D_RT_COLOR7:
5405	{
5406	/* A texture surface can be used as a render target to fill it and later on used as a texture. */
5407	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5408	{
5409	Log(("vmsvga3dSetRenderTarget: create texture to be used as render target; surface id=%x type=%d format=%d -> create texture\n", target.sid, pRenderTarget->surfaceFlags, pRenderTarget->format));
5410	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pRenderTarget);
5411	AssertRCReturn(rc, rc);
5412	}
5413
5414	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5415	Assert(!pRenderTarget->fDirty);
5416
5417	pRenderTarget->surfaceFlags \|= SVGA3D_SURFACE_HINT_RENDERTARGET;
5418
5419	GLenum textarget;
5420	if (pRenderTarget->surfaceFlags & SVGA3D_SURFACE_CUBEMAP)
5421	textarget = vmsvga3dCubemapFaceFromIndex(target.face);
5422	else
5423	textarget = GL_TEXTURE_2D;
5424	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + type - SVGA3D_RT_COLOR0,
5425	textarget, pRenderTarget->oglId.texture, target.mipmap);
5426	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5427
5428	#ifdef DEBUG
5429	GLenum status = pState->ext.glCheckFramebufferStatus(GL_FRAMEBUFFER);
5430	if (status != GL_FRAMEBUFFER_COMPLETE)
5431	Log(("vmsvga3dSetRenderTarget: WARNING: glCheckFramebufferStatus returned %x\n", status));
5432	#endif
5433	/** @todo use glDrawBuffers too? */
5434	break;
5435	}
5436
5437	default:
5438	AssertFailedReturn(VERR_INVALID_PARAMETER);
5439	}
5440
5441	return VINF_SUCCESS;
5442	}
5443
5444	#if 0
5445	/**
5446	* Convert SVGA texture combiner value to its D3D equivalent
5447	*/
5448	static DWORD vmsvga3dTextureCombiner2D3D(uint32_t value)
5449	{
5450	switch (value)
5451	{
5452	case SVGA3D_TC_DISABLE:
5453	return D3DTOP_DISABLE;
5454	case SVGA3D_TC_SELECTARG1:
5455	return D3DTOP_SELECTARG1;
5456	case SVGA3D_TC_SELECTARG2:
5457	return D3DTOP_SELECTARG2;
5458	case SVGA3D_TC_MODULATE:
5459	return D3DTOP_MODULATE;
5460	case SVGA3D_TC_ADD:
5461	return D3DTOP_ADD;
5462	case SVGA3D_TC_ADDSIGNED:
5463	return D3DTOP_ADDSIGNED;
5464	case SVGA3D_TC_SUBTRACT:
5465	return D3DTOP_SUBTRACT;
5466	case SVGA3D_TC_BLENDTEXTUREALPHA:
5467	return D3DTOP_BLENDTEXTUREALPHA;
5468	case SVGA3D_TC_BLENDDIFFUSEALPHA:
5469	return D3DTOP_BLENDDIFFUSEALPHA;
5470	case SVGA3D_TC_BLENDCURRENTALPHA:
5471	return D3DTOP_BLENDCURRENTALPHA;
5472	case SVGA3D_TC_BLENDFACTORALPHA:
5473	return D3DTOP_BLENDFACTORALPHA;
5474	case SVGA3D_TC_MODULATE2X:
5475	return D3DTOP_MODULATE2X;
5476	case SVGA3D_TC_MODULATE4X:
5477	return D3DTOP_MODULATE4X;
5478	case SVGA3D_TC_DSDT:
5479	AssertFailed(); /** @todo ??? */
5480	return D3DTOP_DISABLE;
5481	case SVGA3D_TC_DOTPRODUCT3:
5482	return D3DTOP_DOTPRODUCT3;
5483	case SVGA3D_TC_BLENDTEXTUREALPHAPM:
5484	return D3DTOP_BLENDTEXTUREALPHAPM;
5485	case SVGA3D_TC_ADDSIGNED2X:
5486	return D3DTOP_ADDSIGNED2X;
5487	case SVGA3D_TC_ADDSMOOTH:
5488	return D3DTOP_ADDSMOOTH;
5489	case SVGA3D_TC_PREMODULATE:
5490	return D3DTOP_PREMODULATE;
5491	case SVGA3D_TC_MODULATEALPHA_ADDCOLOR:
5492	return D3DTOP_MODULATEALPHA_ADDCOLOR;
5493	case SVGA3D_TC_MODULATECOLOR_ADDALPHA:
5494	return D3DTOP_MODULATECOLOR_ADDALPHA;
5495	case SVGA3D_TC_MODULATEINVALPHA_ADDCOLOR:
5496	return D3DTOP_MODULATEINVALPHA_ADDCOLOR;
5497	case SVGA3D_TC_MODULATEINVCOLOR_ADDALPHA:
5498	return D3DTOP_MODULATEINVCOLOR_ADDALPHA;
5499	case SVGA3D_TC_BUMPENVMAPLUMINANCE:
5500	return D3DTOP_BUMPENVMAPLUMINANCE;
5501	case SVGA3D_TC_MULTIPLYADD:
5502	return D3DTOP_MULTIPLYADD;
5503	case SVGA3D_TC_LERP:
5504	return D3DTOP_LERP;
5505	default:
5506	AssertFailed();
5507	return D3DTOP_DISABLE;
5508	}
5509	}
5510
5511	/**
5512	* Convert SVGA texture arg data value to its D3D equivalent
5513	*/
5514	static DWORD vmsvga3dTextureArgData2D3D(uint32_t value)
5515	{
5516	switch (value)
5517	{
5518	case SVGA3D_TA_CONSTANT:
5519	return D3DTA_CONSTANT;
5520	case SVGA3D_TA_PREVIOUS:
5521	return D3DTA_CURRENT; /* current = previous */
5522	case SVGA3D_TA_DIFFUSE:
5523	return D3DTA_DIFFUSE;
5524	case SVGA3D_TA_TEXTURE:
5525	return D3DTA_TEXTURE;
5526	case SVGA3D_TA_SPECULAR:
5527	return D3DTA_SPECULAR;
5528	default:
5529	AssertFailed();
5530	return 0;
5531	}
5532	}
5533
5534	/**
5535	* Convert SVGA texture transform flag value to its D3D equivalent
5536	*/
5537	static DWORD vmsvga3dTextTransformFlags2D3D(uint32_t value)
5538	{
5539	switch (value)
5540	{
5541	case SVGA3D_TEX_TRANSFORM_OFF:
5542	return D3DTTFF_DISABLE;
5543	case SVGA3D_TEX_TRANSFORM_S:
5544	return D3DTTFF_COUNT1; /** @todo correct? */
5545	case SVGA3D_TEX_TRANSFORM_T:
5546	return D3DTTFF_COUNT2; /** @todo correct? */
5547	case SVGA3D_TEX_TRANSFORM_R:
5548	return D3DTTFF_COUNT3; /** @todo correct? */
5549	case SVGA3D_TEX_TRANSFORM_Q:
5550	return D3DTTFF_COUNT4; /** @todo correct? */
5551	case SVGA3D_TEX_PROJECTED:
5552	return D3DTTFF_PROJECTED;
5553	default:
5554	AssertFailed();
5555	return 0;
5556	}
5557	}
5558	#endif
5559
5560	static GLenum vmsvga3dTextureAddress2OGL(SVGA3dTextureAddress value)
5561	{
5562	switch (value)
5563	{
5564	case SVGA3D_TEX_ADDRESS_WRAP:
5565	return GL_REPEAT;
5566	case SVGA3D_TEX_ADDRESS_MIRROR:
5567	return GL_MIRRORED_REPEAT;
5568	case SVGA3D_TEX_ADDRESS_CLAMP:
5569	return GL_CLAMP_TO_EDGE;
5570	case SVGA3D_TEX_ADDRESS_BORDER:
5571	return GL_CLAMP_TO_BORDER;
5572	case SVGA3D_TEX_ADDRESS_MIRRORONCE:
5573	AssertFailed();
5574	return GL_CLAMP_TO_EDGE_SGIS; /** @todo correct? */
5575
5576	case SVGA3D_TEX_ADDRESS_EDGE:
5577	case SVGA3D_TEX_ADDRESS_INVALID:
5578	default:
5579	AssertFailed();
5580	return GL_REPEAT; /* default */
5581	}
5582	}
5583
5584	static GLenum vmsvga3dTextureFilter2OGL(SVGA3dTextureFilter value)
5585	{
5586	switch (value)
5587	{
5588	case SVGA3D_TEX_FILTER_NONE:
5589	case SVGA3D_TEX_FILTER_LINEAR:
5590	case SVGA3D_TEX_FILTER_ANISOTROPIC: /* Anisotropic filtering is controlled by SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL */
5591	return GL_LINEAR;
5592	case SVGA3D_TEX_FILTER_NEAREST:
5593	return GL_NEAREST;
5594	case SVGA3D_TEX_FILTER_FLATCUBIC: // Deprecated, not implemented
5595	case SVGA3D_TEX_FILTER_GAUSSIANCUBIC: // Deprecated, not implemented
5596	case SVGA3D_TEX_FILTER_PYRAMIDALQUAD: // Not currently implemented
5597	case SVGA3D_TEX_FILTER_GAUSSIANQUAD: // Not currently implemented
5598	default:
5599	AssertFailed();
5600	return GL_LINEAR; /* default */
5601	}
5602	}
5603
5604	uint32_t vmsvga3dSVGA3dColor2RGBA(SVGA3dColor value)
5605	{
5606	/* flip the red and blue bytes */
5607	uint8_t blue = value & 0xff;
5608	uint8_t red = (value >> 16) & 0xff;
5609	return (value & 0xff00ff00) \| red \| (blue << 16);
5610	}
5611
5612	static DECLCALLBACK(int) vmsvga3dBackSetTextureState(PVGASTATECC pThisCC, uint32_t cid, uint32_t cTextureStates, SVGA3dTextureState *pTextureState)
5613	{
5614	GLenum val = ~(GLenum)0; /* Shut up MSC. */
5615	GLenum currentStage = ~(GLenum)0;
5616	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5617	AssertReturn(pState, VERR_NO_MEMORY);
5618
5619	Log(("vmsvga3dSetTextureState %x cTextureState=%d\n", cid, cTextureStates));
5620
5621	PVMSVGA3DCONTEXT pContext;
5622	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5623	AssertRCReturn(rc, rc);
5624
5625	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5626
5627	/* Which texture is active for the current stage. Needed to use right OpenGL target when setting parameters. */
5628	PVMSVGA3DSURFACE pCurrentTextureSurface = NULL;
5629
5630	for (uint32_t i = 0; i < cTextureStates; ++i)
5631	{
5632	GLenum textureType = ~(GLenum)0;
5633	#if 0
5634	GLenum samplerType = ~(GLenum)0;
5635	#endif
5636
5637	LogFunc(("cid=%u stage=%d type=%s (%x) val=%x\n",
5638	cid, pTextureState[i].stage, vmsvga3dTextureStateToString(pTextureState[i].name), pTextureState[i].name, pTextureState[i].value));
5639
5640	/* Record the texture state for vm state saving. */
5641	if ( pTextureState[i].stage < RT_ELEMENTS(pContext->state.aTextureStates)
5642	&& (unsigned)pTextureState[i].name < RT_ELEMENTS(pContext->state.aTextureStates[0]))
5643	{
5644	pContext->state.aTextureStates[pTextureState[i].stage][pTextureState[i].name] = pTextureState[i];
5645	}
5646
5647	/* Activate the right texture unit for subsequent texture state changes. */
5648	if (pTextureState[i].stage != currentStage \|\| i == 0)
5649	{
5650	/** @todo Is this the appropriate limit for all kinds of textures? It is the
5651	* size of aSidActiveTextures and for binding/unbinding we cannot exceed it. */
5652	if (pTextureState[i].stage < RT_ELEMENTS(pContext->state.aTextureStates))
5653	{
5654	pState->ext.glActiveTexture(GL_TEXTURE0 + pTextureState[i].stage);
5655	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5656	currentStage = pTextureState[i].stage;
5657	}
5658	else
5659	{
5660	AssertMsgFailed(("pTextureState[%d].stage=%#x name=%#x\n", i, pTextureState[i].stage, pTextureState[i].name));
5661	continue;
5662	}
5663
5664	if (pContext->aSidActiveTextures[currentStage] != SVGA3D_INVALID_ID)
5665	{
5666	rc = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[currentStage], &pCurrentTextureSurface);
5667	AssertRCReturn(rc, rc);
5668	}
5669	else
5670	pCurrentTextureSurface = NULL; /* Make sure that no stale pointer is used. */
5671	}
5672
5673	switch (pTextureState[i].name)
5674	{
5675	case SVGA3D_TS_BUMPENVMAT00: /* float */
5676	case SVGA3D_TS_BUMPENVMAT01: /* float */
5677	case SVGA3D_TS_BUMPENVMAT10: /* float */
5678	case SVGA3D_TS_BUMPENVMAT11: /* float */
5679	case SVGA3D_TS_BUMPENVLSCALE: /* float */
5680	case SVGA3D_TS_BUMPENVLOFFSET: /* float */
5681	Log(("vmsvga3dSetTextureState: bump mapping texture options not supported!!\n"));
5682	break;
5683
5684	case SVGA3D_TS_COLOROP: /* SVGA3dTextureCombiner */
5685	case SVGA3D_TS_COLORARG0: /* SVGA3dTextureArgData */
5686	case SVGA3D_TS_COLORARG1: /* SVGA3dTextureArgData */
5687	case SVGA3D_TS_COLORARG2: /* SVGA3dTextureArgData */
5688	case SVGA3D_TS_ALPHAOP: /* SVGA3dTextureCombiner */
5689	case SVGA3D_TS_ALPHAARG0: /* SVGA3dTextureArgData */
5690	case SVGA3D_TS_ALPHAARG1: /* SVGA3dTextureArgData */
5691	case SVGA3D_TS_ALPHAARG2: /* SVGA3dTextureArgData */
5692	/** @todo not used by MesaGL */
5693	Log(("vmsvga3dSetTextureState: colorop/alphaop not yet supported!!\n"));
5694	break;
5695	#if 0
5696
5697	case SVGA3D_TS_TEXCOORDINDEX: /* uint32_t */
5698	textureType = D3DTSS_TEXCOORDINDEX;
5699	val = pTextureState[i].value;
5700	break;
5701
5702	case SVGA3D_TS_TEXTURETRANSFORMFLAGS: /* SVGA3dTexTransformFlags */
5703	textureType = D3DTSS_TEXTURETRANSFORMFLAGS;
5704	val = vmsvga3dTextTransformFlags2D3D(pTextureState[i].value);
5705	break;
5706	#endif
5707
5708	case SVGA3D_TS_BIND_TEXTURE: /* SVGA3dSurfaceId */
5709	{
5710	uint32_t const sid = pTextureState[i].value;
5711
5712	Log(("SVGA3D_TS_BIND_TEXTURE: stage %d, texture sid=%u replacing sid=%u\n",
5713	currentStage, sid, pContext->aSidActiveTextures[currentStage]));
5714
5715	/* Only if texture actually changed. */ /// @todo needs testing.
5716	if (pContext->aSidActiveTextures[currentStage] != sid)
5717	{
5718	if (pCurrentTextureSurface)
5719	{
5720	/* Unselect the currently associated texture. */
5721	glBindTexture(pCurrentTextureSurface->targetGL, 0);
5722	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5723
5724	if (currentStage < 8)
5725	{
5726	/* Necessary for the fixed pipeline. */
5727	glDisable(pCurrentTextureSurface->targetGL);
5728	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5729	}
5730
5731	pCurrentTextureSurface = NULL;
5732	}
5733
5734	if (sid == SVGA3D_INVALID_ID)
5735	{
5736	Assert(pCurrentTextureSurface == NULL);
5737	}
5738	else
5739	{
5740	PVMSVGA3DSURFACE pSurface;
5741	rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
5742	AssertRCReturn(rc, rc);
5743
5744	Log(("SVGA3D_TS_BIND_TEXTURE: stage %d, texture sid=%u (%d,%d) replacing sid=%u\n",
5745	currentStage, sid, pSurface->paMipmapLevels[0].mipmapSize.width,
5746	pSurface->paMipmapLevels[0].mipmapSize.height, pContext->aSidActiveTextures[currentStage]));
5747
5748	if (pSurface->oglId.texture == OPENGL_INVALID_ID)
5749	{
5750	Log(("CreateTexture (%d,%d) levels=%d\n",
5751	pSurface->paMipmapLevels[0].mipmapSize.width, pSurface->paMipmapLevels[0].mipmapSize.height, pSurface->cLevels));
5752	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pSurface);
5753	AssertRCReturn(rc, rc);
5754	}
5755
5756	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
5757	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5758
5759	if (currentStage < 8)
5760	{
5761	/* Necessary for the fixed pipeline. */
5762	glEnable(pSurface->targetGL);
5763	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5764	}
5765
5766	/* Remember the currently active texture. */
5767	pCurrentTextureSurface = pSurface;
5768
5769	/* Recreate the texture state as glBindTexture resets them all (sigh). */
5770	for (uint32_t iStage = 0; iStage < RT_ELEMENTS(pContext->state.aTextureStates); iStage++)
5771	{
5772	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aTextureStates[0]); j++)
5773	{
5774	SVGA3dTextureState *pTextureStateIter = &pContext->state.aTextureStates[iStage][j];
5775
5776	if ( pTextureStateIter->name != SVGA3D_TS_INVALID
5777	&& pTextureStateIter->name != SVGA3D_TS_BIND_TEXTURE)
5778	vmsvga3dBackSetTextureState(pThisCC, pContext->id, 1, pTextureStateIter);
5779	}
5780	}
5781	}
5782
5783	pContext->aSidActiveTextures[currentStage] = sid;
5784	}
5785
5786	/* Finished; continue with the next one. */
5787	continue;
5788	}
5789
5790	case SVGA3D_TS_ADDRESSW: /* SVGA3dTextureAddress */
5791	textureType = GL_TEXTURE_WRAP_R; /* R = W */
5792	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5793	break;
5794
5795	case SVGA3D_TS_ADDRESSU: /* SVGA3dTextureAddress */
5796	textureType = GL_TEXTURE_WRAP_S; /* S = U */
5797	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5798	break;
5799
5800	case SVGA3D_TS_ADDRESSV: /* SVGA3dTextureAddress */
5801	textureType = GL_TEXTURE_WRAP_T; /* T = V */
5802	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5803	break;
5804
5805	case SVGA3D_TS_MIPFILTER: /* SVGA3dTextureFilter */
5806	case SVGA3D_TS_MINFILTER: /* SVGA3dTextureFilter */
5807	{
5808	uint32_t mipFilter = pContext->state.aTextureStates[currentStage][SVGA3D_TS_MIPFILTER].value;
5809	uint32_t minFilter = pContext->state.aTextureStates[currentStage][SVGA3D_TS_MINFILTER].value;
5810
5811	/* If SVGA3D_TS_MIPFILTER is set to NONE, then use SVGA3D_TS_MIPFILTER, otherwise SVGA3D_TS_MIPFILTER enables mipmap minification. */
5812	textureType = GL_TEXTURE_MIN_FILTER;
5813	if (mipFilter != SVGA3D_TEX_FILTER_NONE)
5814	{
5815	if (minFilter == SVGA3D_TEX_FILTER_NEAREST)
5816	{
5817	if (mipFilter == SVGA3D_TEX_FILTER_LINEAR)
5818	val = GL_NEAREST_MIPMAP_LINEAR;
5819	else
5820	val = GL_NEAREST_MIPMAP_NEAREST;
5821	}
5822	else
5823	{
5824	if (mipFilter == SVGA3D_TEX_FILTER_LINEAR)
5825	val = GL_LINEAR_MIPMAP_LINEAR;
5826	else
5827	val = GL_LINEAR_MIPMAP_NEAREST;
5828	}
5829	}
5830	else
5831	val = vmsvga3dTextureFilter2OGL((SVGA3dTextureFilter)minFilter);
5832	break;
5833	}
5834
5835	case SVGA3D_TS_MAGFILTER: /* SVGA3dTextureFilter */
5836	textureType = GL_TEXTURE_MAG_FILTER;
5837	val = vmsvga3dTextureFilter2OGL((SVGA3dTextureFilter)pTextureState[i].value);
5838	Assert(val == GL_NEAREST \|\| val == GL_LINEAR);
5839	break;
5840
5841	case SVGA3D_TS_BORDERCOLOR: /* SVGA3dColor */
5842	{
5843	GLfloat color[4]; /* red, green, blue, alpha */
5844	vmsvgaColor2GLFloatArray(pTextureState[i].value, &color[0], &color[1], &color[2], &color[3]);
5845
5846	GLenum targetGL;
5847	if (pCurrentTextureSurface)
5848	targetGL = pCurrentTextureSurface->targetGL;
5849	else
5850	{
5851	/* No texture bound, assume 2D. */
5852	targetGL = GL_TEXTURE_2D;
5853	}
5854
5855	glTexParameterfv(targetGL, GL_TEXTURE_BORDER_COLOR, color); /* Identical; default 0.0 identical too */
5856	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5857	break;
5858	}
5859
5860	case SVGA3D_TS_TEXTURE_LOD_BIAS: /* float */
5861	{
5862	GLenum targetGL;
5863	if (pCurrentTextureSurface)
5864	targetGL = pCurrentTextureSurface->targetGL;
5865	else
5866	{
5867	/* No texture bound, assume 2D. */
5868	targetGL = GL_TEXTURE_2D;
5869	}
5870
5871	glTexParameterf(targetGL, GL_TEXTURE_LOD_BIAS, pTextureState[i].floatValue); /* Identical; default 0.0 identical too */
5872	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5873	break;
5874	}
5875
5876	case SVGA3D_TS_TEXTURE_MIPMAP_LEVEL: /* uint32_t */
5877	textureType = GL_TEXTURE_BASE_LEVEL;
5878	val = pTextureState[i].value;
5879	break;
5880
5881	case SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL: /* uint32_t */
5882	if (pState->caps.fTextureFilterAnisotropicSupported)
5883	{
5884	textureType = GL_TEXTURE_MAX_ANISOTROPY_EXT;
5885	val = RT_MIN((GLint)pTextureState[i].value, pState->caps.maxTextureAnisotropy);
5886	} /* otherwise ignore. */
5887	break;
5888
5889	#if 0
5890	case SVGA3D_TS_GAMMA: /* float */
5891	samplerType = D3DSAMP_SRGBTEXTURE;
5892	/* Boolean in D3D */
5893	if (pTextureState[i].floatValue == 1.0f)
5894	val = FALSE;
5895	else
5896	val = TRUE;
5897	break;
5898	#endif
5899	/* Internal commands, that don't map directly to the SetTextureStageState API. */
5900	case SVGA3D_TS_TEXCOORDGEN: /* SVGA3dTextureCoordGen */
5901	AssertFailed();
5902	break;
5903
5904	default:
5905	//AssertFailed();
5906	break;
5907	}
5908
5909	if (textureType != ~(GLenum)0)
5910	{
5911	GLenum targetGL;
5912	if (pCurrentTextureSurface)
5913	targetGL = pCurrentTextureSurface->targetGL;
5914	else
5915	{
5916	/* No texture bound, assume 2D. */
5917	targetGL = GL_TEXTURE_2D;
5918	}
5919
5920	switch (pTextureState[i].name)
5921	{
5922	case SVGA3D_TS_MINFILTER:
5923	case SVGA3D_TS_MAGFILTER:
5924	{
5925	if (pState->caps.fTextureFilterAnisotropicSupported)
5926	{
5927	uint32_t const anisotropyLevel = (SVGA3dTextureFilter)pTextureState[i].value == SVGA3D_TEX_FILTER_ANISOTROPIC
5928	? RT_MAX(1, pContext->state.aTextureStates[currentStage][SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL].value)
5929	: 1;
5930	glTexParameteri(targetGL, GL_TEXTURE_MAX_ANISOTROPY_EXT, RT_MIN((GLint)anisotropyLevel, pState->caps.maxTextureAnisotropy));
5931	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5932	}
5933	} break;
5934
5935	default: break;
5936	}
5937
5938	glTexParameteri(targetGL, textureType, val);
5939	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5940	}
5941	}
5942
5943	return VINF_SUCCESS;
5944	}
5945
5946	static DECLCALLBACK(int) vmsvga3dBackSetMaterial(PVGASTATECC pThisCC, uint32_t cid, SVGA3dFace face, SVGA3dMaterial *pMaterial)
5947	{
5948	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5949	AssertReturn(pState, VERR_NO_MEMORY);
5950
5951	LogFunc(("cid=%u face %d\n", cid, face));
5952
5953	PVMSVGA3DCONTEXT pContext;
5954	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5955	AssertRCReturn(rc, rc);
5956
5957	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5958
5959	GLenum oglFace;
5960	switch (face)
5961	{
5962	case SVGA3D_FACE_NONE:
5963	case SVGA3D_FACE_FRONT:
5964	oglFace = GL_FRONT;
5965	break;
5966
5967	case SVGA3D_FACE_BACK:
5968	oglFace = GL_BACK;
5969	break;
5970
5971	case SVGA3D_FACE_FRONT_BACK:
5972	oglFace = GL_FRONT_AND_BACK;
5973	break;
5974
5975	default:
5976	AssertFailedReturn(VERR_INVALID_PARAMETER);
5977	}
5978
5979	/* Save for vm state save/restore. */
5980	pContext->state.aMaterial[face].fValid = true;
5981	pContext->state.aMaterial[face].material = *pMaterial;
5982	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_MATERIAL;
5983
5984	glMaterialfv(oglFace, GL_DIFFUSE, pMaterial->diffuse);
5985	glMaterialfv(oglFace, GL_AMBIENT, pMaterial->ambient);
5986	glMaterialfv(oglFace, GL_SPECULAR, pMaterial->specular);
5987	glMaterialfv(oglFace, GL_EMISSION, pMaterial->emissive);
5988	glMaterialfv(oglFace, GL_SHININESS, &pMaterial->shininess);
5989	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5990
5991	return VINF_SUCCESS;
5992	}
5993
5994	/** @todo Move into separate library as we are using logic from Wine here. */
5995	static DECLCALLBACK(int) vmsvga3dBackSetLightData(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, SVGA3dLightData *pData)
5996	{
5997	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5998	AssertReturn(pState, VERR_NO_MEMORY);
5999
6000	LogFunc(("vmsvga3dSetLightData cid=%u index=%d type=%d\n", cid, index, pData->type));
6001	ASSERT_GUEST_RETURN(index < SVGA3D_MAX_LIGHTS, VERR_INVALID_PARAMETER);
6002
6003	PVMSVGA3DCONTEXT pContext;
6004	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6005	AssertRCReturn(rc, rc);
6006
6007	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6008
6009	/* Store for vm state save/restore */
6010	pContext->state.aLightData[index].fValidData = true;
6011	pContext->state.aLightData[index].data = *pData;
6012
6013	if ( pData->attenuation0 < 0.0f
6014	\|\| pData->attenuation1 < 0.0f
6015	\|\| pData->attenuation2 < 0.0f)
6016	{
6017	Log(("vmsvga3dSetLightData: invalid negative attenuation values!!\n"));
6018	return VINF_SUCCESS; /* ignore; could crash the GL driver */
6019	}
6020
6021	/* Light settings are affected by the model view in OpenGL, the View transform in direct3d */
6022	glMatrixMode(GL_MODELVIEW);
6023	glPushMatrix();
6024	glLoadMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
6025
6026	glLightfv(GL_LIGHT0 + index, GL_DIFFUSE, pData->diffuse);
6027	glLightfv(GL_LIGHT0 + index, GL_SPECULAR, pData->specular);
6028	glLightfv(GL_LIGHT0 + index, GL_AMBIENT, pData->ambient);
6029
6030	float QuadAttenuation;
6031	if (pData->range * pData->range >= FLT_MIN)
6032	QuadAttenuation = 1.4f / (pData->range * pData->range);
6033	else
6034	QuadAttenuation = 0.0f;
6035
6036	switch (pData->type)
6037	{
6038	case SVGA3D_LIGHTTYPE_POINT:
6039	{
6040	GLfloat position[4];
6041
6042	position[0] = pData->position[0];
6043	position[1] = pData->position[1];
6044	position[2] = pData->position[2];
6045	position[3] = 1.0f;
6046
6047	glLightfv(GL_LIGHT0 + index, GL_POSITION, position);
6048	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6049
6050	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, 180.0f);
6051	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6052
6053	/* Attenuation - Are these right? guessing... */
6054	glLightf(GL_LIGHT0 + index, GL_CONSTANT_ATTENUATION, pData->attenuation0);
6055	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6056
6057	glLightf(GL_LIGHT0 + index, GL_LINEAR_ATTENUATION, pData->attenuation1);
6058	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6059
6060	glLightf(GL_LIGHT0 + index, GL_QUADRATIC_ATTENUATION, (QuadAttenuation < pData->attenuation2) ? pData->attenuation2 : QuadAttenuation);
6061	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6062
6063	/** @todo range */
6064	break;
6065	}
6066
6067	case SVGA3D_LIGHTTYPE_SPOT1:
6068	{
6069	GLfloat exponent;
6070	GLfloat position[4];
6071	const GLfloat pi = 4.0f * atanf(1.0f);
6072
6073	position[0] = pData->position[0];
6074	position[1] = pData->position[1];
6075	position[2] = pData->position[2];
6076	position[3] = 1.0f;
6077
6078	glLightfv(GL_LIGHT0 + index, GL_POSITION, position);
6079	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6080
6081	position[0] = pData->direction[0];
6082	position[1] = pData->direction[1];
6083	position[2] = pData->direction[2];
6084	position[3] = 1.0f;
6085
6086	glLightfv(GL_LIGHT0 + index, GL_SPOT_DIRECTION, position);
6087	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6088
6089	/*
6090	* opengl-ish and d3d-ish spot lights use too different models for the
6091	* light "intensity" as a function of the angle towards the main light direction,
6092	* so we only can approximate very roughly.
6093	* however spot lights are rather rarely used in games (if ever used at all).
6094	* furthermore if still used, probably nobody pays attention to such details.
6095	*/
6096	if (pData->falloff == 0)
6097	{
6098	/* Falloff = 0 is easy, because d3d's and opengl's spot light equations have the
6099	* falloff resp. exponent parameter as an exponent, so the spot light lighting
6100	* will always be 1.0 for both of them, and we don't have to care for the
6101	* rest of the rather complex calculation
6102	*/
6103	exponent = 0.0f;
6104	}
6105	else
6106	{
6107	float rho = pData->theta + (pData->phi - pData->theta) / (2 * pData->falloff);
6108	if (rho < 0.0001f)
6109	rho = 0.0001f;
6110	exponent = -0.3f/log(cos(rho/2));
6111	}
6112	if (exponent > 128.0f)
6113	exponent = 128.0f;
6114
6115	glLightf(GL_LIGHT0 + index, GL_SPOT_EXPONENT, exponent);
6116	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6117
6118	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, pData->phi * 90.0 / pi);
6119	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6120
6121	/* Attenuation - Are these right? guessing... */
6122	glLightf(GL_LIGHT0 + index, GL_CONSTANT_ATTENUATION, pData->attenuation0);
6123	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6124
6125	glLightf(GL_LIGHT0 + index, GL_LINEAR_ATTENUATION, pData->attenuation1);
6126	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6127
6128	glLightf(GL_LIGHT0 + index, GL_QUADRATIC_ATTENUATION, (QuadAttenuation < pData->attenuation2) ? pData->attenuation2 : QuadAttenuation);
6129	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6130
6131	/** @todo range */
6132	break;
6133	}
6134
6135	case SVGA3D_LIGHTTYPE_DIRECTIONAL:
6136	{
6137	GLfloat position[4];
6138
6139	position[0] = -pData->direction[0];
6140	position[1] = -pData->direction[1];
6141	position[2] = -pData->direction[2];
6142	position[3] = 0.0f;
6143
6144	glLightfv(GL_LIGHT0 + index, GL_POSITION, position); /* Note gl uses w position of 0 for direction! */
6145	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6146
6147	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, 180.0f);
6148	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6149
6150	glLightf(GL_LIGHT0 + index, GL_SPOT_EXPONENT, 0.0f);
6151	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6152	break;
6153	}
6154
6155	case SVGA3D_LIGHTTYPE_SPOT2:
6156	default:
6157	Log(("Unsupported light type!!\n"));
6158	rc = VERR_INVALID_PARAMETER;
6159	break;
6160	}
6161
6162	/* Restore the modelview matrix */
6163	glPopMatrix();
6164
6165	return rc;
6166	}
6167
6168	static DECLCALLBACK(int) vmsvga3dBackSetLightEnabled(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, uint32_t enabled)
6169	{
6170	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6171	AssertReturn(pState, VERR_NO_MEMORY);
6172
6173	LogFunc(("cid=%u %d -> %d\n", cid, index, enabled));
6174
6175	PVMSVGA3DCONTEXT pContext;
6176	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6177	AssertRCReturn(rc, rc);
6178
6179	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6180
6181	/* Store for vm state save/restore */
6182	if (index < SVGA3D_MAX_LIGHTS)
6183	pContext->state.aLightData[index].fEnabled = !!enabled;
6184	else
6185	AssertFailed();
6186
6187	if (enabled)
6188	{
6189	if (index < SVGA3D_MAX_LIGHTS)
6190	{
6191	/* Load the default settings if none have been set yet. */
6192	if (!pContext->state.aLightData[index].fValidData)
6193	vmsvga3dBackSetLightData(pThisCC, cid, index, (SVGA3dLightData *)&vmsvga3d_default_light);
6194	}
6195	glEnable(GL_LIGHT0 + index);
6196	}
6197	else
6198	glDisable(GL_LIGHT0 + index);
6199
6200	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6201	return VINF_SUCCESS;
6202	}
6203
6204	static DECLCALLBACK(int) vmsvga3dBackSetViewPort(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRect *pRect)
6205	{
6206	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6207	AssertReturn(pState, VERR_NO_MEMORY);
6208
6209	Log(("vmsvga3dSetViewPort cid=%u (%d,%d)(%d,%d)\n", cid, pRect->x, pRect->y, pRect->w, pRect->h));
6210
6211	PVMSVGA3DCONTEXT pContext;
6212	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6213	AssertRCReturn(rc, rc);
6214
6215	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6216
6217	/* Save for vm state save/restore. */
6218	pContext->state.RectViewPort = *pRect;
6219	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_VIEWPORT;
6220
6221	/** @todo y-inversion for partial viewport coordinates? */
6222	glViewport(pRect->x, pRect->y, pRect->w, pRect->h);
6223	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6224
6225	/* Reset the projection matrix as that relies on the viewport setting. */
6226	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].fValid == true)
6227	vmsvga3dBackSetTransform(pThisCC, cid, SVGA3D_TRANSFORM_PROJECTION,
6228	pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].matrix);
6229	else
6230	{
6231	float matrix[16];
6232
6233	/* identity matrix if no matrix set. */
6234	memset(matrix, 0, sizeof(matrix));
6235	matrix[0] = 1.0;
6236	matrix[5] = 1.0;
6237	matrix[10] = 1.0;
6238	matrix[15] = 1.0;
6239	vmsvga3dBackSetTransform(pThisCC, cid, SVGA3D_TRANSFORM_PROJECTION, matrix);
6240	}
6241
6242	return VINF_SUCCESS;
6243	}
6244
6245	static DECLCALLBACK(int) vmsvga3dBackSetClipPlane(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, float plane[4])
6246	{
6247	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6248	AssertReturn(pState, VERR_NO_MEMORY);
6249	double oglPlane[4];
6250
6251	Log(("vmsvga3dSetClipPlane cid=%u %d (%d,%d)(%d,%d)\n", cid, index, (unsigned)(plane[0] * 100.0), (unsigned)(plane[1] * 100.0), (unsigned)(plane[2] * 100.0), (unsigned)(plane[3] * 100.0)));
6252	AssertReturn(index < SVGA3D_NUM_CLIPPLANES, VERR_INVALID_PARAMETER);
6253
6254	PVMSVGA3DCONTEXT pContext;
6255	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6256	AssertRCReturn(rc, rc);
6257
6258	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6259
6260	/* Store for vm state save/restore. */
6261	pContext->state.aClipPlane[index].fValid = true;
6262	memcpy(pContext->state.aClipPlane[index].plane, plane, sizeof(pContext->state.aClipPlane[index].plane));
6263
6264	/** @todo clip plane affected by model view in OpenGL & view in D3D + vertex shader -> not transformed (see Wine; state.c clipplane) */
6265	oglPlane[0] = (double)plane[0];
6266	oglPlane[1] = (double)plane[1];
6267	oglPlane[2] = (double)plane[2];
6268	oglPlane[3] = (double)plane[3];
6269
6270	glClipPlane(GL_CLIP_PLANE0 + index, oglPlane);
6271	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6272
6273	return VINF_SUCCESS;
6274	}
6275
6276	static DECLCALLBACK(int) vmsvga3dBackSetScissorRect(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRect *pRect)
6277	{
6278	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6279	AssertReturn(pState, VERR_NO_MEMORY);
6280
6281	Log(("vmsvga3dSetScissorRect cid=%u (%d,%d)(%d,%d)\n", cid, pRect->x, pRect->y, pRect->w, pRect->h));
6282
6283	PVMSVGA3DCONTEXT pContext;
6284	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6285	AssertRCReturn(rc, rc);
6286
6287	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6288
6289	/* Store for vm state save/restore. */
6290	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_SCISSORRECT;
6291	pContext->state.RectScissor = *pRect;
6292
6293	glScissor(pRect->x, pRect->y, pRect->w, pRect->h);
6294	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6295
6296	return VINF_SUCCESS;
6297	}
6298
6299	static void vmsvgaColor2GLFloatArray(uint32_t color, GLfloat pRed, GLfloat pGreen, GLfloat pBlue, GLfloat pAlpha)
6300	{
6301	/* Convert byte color components to float (0-1.0) */
6302	*pAlpha = (GLfloat)(color >> 24) / 255.0;
6303	*pRed = (GLfloat)((color >> 16) & 0xff) / 255.0;
6304	*pGreen = (GLfloat)((color >> 8) & 0xff) / 255.0;
6305	*pBlue = (GLfloat)(color & 0xff) / 255.0;
6306	}
6307
6308	static DECLCALLBACK(int) vmsvga3dBackCommandClear(PVGASTATECC pThisCC, uint32_t cid, SVGA3dClearFlag clearFlag, uint32_t color, float depth, uint32_t stencil,
6309	uint32_t cRects, SVGA3dRect *pRect)
6310	{
6311	GLbitfield mask = 0;
6312	GLbitfield restoreMask = 0;
6313	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6314	AssertReturn(pState, VERR_NO_MEMORY);
6315	GLboolean fDepthWriteEnabled = GL_FALSE;
6316	GLboolean afColorWriteEnabled[4] = { GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE };
6317
6318	Log(("vmsvga3dCommandClear cid=%u clearFlag=%x color=%x depth=%d stencil=%x cRects=%d\n", cid, clearFlag, color, (uint32_t)(depth * 100.0), stencil, cRects));
6319
6320	PVMSVGA3DCONTEXT pContext;
6321	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6322	AssertRCReturn(rc, rc);
6323
6324	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6325
6326	if (clearFlag & SVGA3D_CLEAR_COLOR)
6327	{
6328	GLfloat red, green, blue, alpha;
6329	vmsvgaColor2GLFloatArray(color, &red, &green, &blue, &alpha);
6330
6331	/* Set the color clear value. */
6332	glClearColor(red, green, blue, alpha);
6333	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6334
6335	mask \|= GL_COLOR_BUFFER_BIT;
6336
6337	/* glClear will not clear the color buffer if writing is disabled. */
6338	glGetBooleanv(GL_COLOR_WRITEMASK, afColorWriteEnabled);
6339	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6340	if ( afColorWriteEnabled[0] == GL_FALSE
6341	\|\| afColorWriteEnabled[1] == GL_FALSE
6342	\|\| afColorWriteEnabled[2] == GL_FALSE
6343	\|\| afColorWriteEnabled[3] == GL_FALSE)
6344	{
6345	glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
6346	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6347
6348	restoreMask \|= GL_COLOR_BUFFER_BIT;
6349	}
6350
6351	}
6352
6353	if (clearFlag & SVGA3D_CLEAR_STENCIL)
6354	{
6355	/** @todo possibly the same problem as with glDepthMask */
6356	glClearStencil(stencil);
6357	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6358
6359	mask \|= GL_STENCIL_BUFFER_BIT;
6360	}
6361
6362	if (clearFlag & SVGA3D_CLEAR_DEPTH)
6363	{
6364	glClearDepth((GLdouble)depth);
6365	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6366
6367	mask \|= GL_DEPTH_BUFFER_BIT;
6368
6369	/* glClear will not clear the depth buffer if writing is disabled. */
6370	glGetBooleanv(GL_DEPTH_WRITEMASK, &fDepthWriteEnabled);
6371	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6372	if (fDepthWriteEnabled == GL_FALSE)
6373	{
6374	glDepthMask(GL_TRUE);
6375	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6376
6377	restoreMask \|= GL_DEPTH_BUFFER_BIT;
6378	}
6379	}
6380
6381	/* Save the current scissor test bit and scissor box. */
6382	glPushAttrib(GL_SCISSOR_BIT);
6383	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6384
6385	if (cRects)
6386	{
6387	glEnable(GL_SCISSOR_TEST);
6388	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6389
6390	for (uint32_t i = 0; i < cRects; ++i)
6391	{
6392	LogFunc(("rect [%d] %d,%d %dx%d)\n", i, pRect[i].x, pRect[i].y, pRect[i].w, pRect[i].h));
6393	glScissor(pRect[i].x, pRect[i].y, pRect[i].w, pRect[i].h);
6394	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6395
6396	glClear(mask);
6397	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6398	}
6399	}
6400	else
6401	{
6402	glDisable(GL_SCISSOR_TEST);
6403	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6404
6405	glClear(mask);
6406	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6407	}
6408
6409	/* Restore the old scissor test bit and box */
6410	glPopAttrib();
6411	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6412
6413	/* Restore the write states. */
6414	if (restoreMask & GL_COLOR_BUFFER_BIT)
6415	{
6416	glColorMask(afColorWriteEnabled[0],
6417	afColorWriteEnabled[1],
6418	afColorWriteEnabled[2],
6419	afColorWriteEnabled[3]);
6420	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6421	}
6422
6423	if (restoreMask & GL_DEPTH_BUFFER_BIT)
6424	{
6425	glDepthMask(fDepthWriteEnabled);
6426	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6427	}
6428
6429	return VINF_SUCCESS;
6430	}
6431
6432	/* Convert VMWare vertex declaration to its OpenGL equivalent. */
6433	int vmsvga3dVertexDecl2OGL(SVGA3dVertexArrayIdentity &identity, GLint &size, GLenum &type, GLboolean &normalized, uint32_t &cbAttrib)
6434	{
6435	normalized = GL_FALSE;
6436	switch (identity.type)
6437	{
6438	case SVGA3D_DECLTYPE_FLOAT1:
6439	size = 1;
6440	type = GL_FLOAT;
6441	cbAttrib = sizeof(float);
6442	break;
6443	case SVGA3D_DECLTYPE_FLOAT2:
6444	size = 2;
6445	type = GL_FLOAT;
6446	cbAttrib = 2 * sizeof(float);
6447	break;
6448	case SVGA3D_DECLTYPE_FLOAT3:
6449	size = 3;
6450	type = GL_FLOAT;
6451	cbAttrib = 3 * sizeof(float);
6452	break;
6453	case SVGA3D_DECLTYPE_FLOAT4:
6454	size = 4;
6455	type = GL_FLOAT;
6456	cbAttrib = 4 * sizeof(float);
6457	break;
6458
6459	case SVGA3D_DECLTYPE_D3DCOLOR:
6460	size = GL_BGRA; /* @note requires GL_ARB_vertex_array_bgra */
6461	type = GL_UNSIGNED_BYTE;
6462	normalized = GL_TRUE; /* glVertexAttribPointer fails otherwise */
6463	cbAttrib = sizeof(uint32_t);
6464	break;
6465
6466	case SVGA3D_DECLTYPE_UBYTE4N:
6467	normalized = GL_TRUE;
6468	RT_FALL_THRU();
6469	case SVGA3D_DECLTYPE_UBYTE4:
6470	size = 4;
6471	type = GL_UNSIGNED_BYTE;
6472	cbAttrib = sizeof(uint32_t);
6473	break;
6474
6475	case SVGA3D_DECLTYPE_SHORT2N:
6476	normalized = GL_TRUE;
6477	RT_FALL_THRU();
6478	case SVGA3D_DECLTYPE_SHORT2:
6479	size = 2;
6480	type = GL_SHORT;
6481	cbAttrib = 2 * sizeof(uint16_t);
6482	break;
6483
6484	case SVGA3D_DECLTYPE_SHORT4N:
6485	normalized = GL_TRUE;
6486	RT_FALL_THRU();
6487	case SVGA3D_DECLTYPE_SHORT4:
6488	size = 4;
6489	type = GL_SHORT;
6490	cbAttrib = 4 * sizeof(uint16_t);
6491	break;
6492
6493	case SVGA3D_DECLTYPE_USHORT4N:
6494	normalized = GL_TRUE;
6495	size = 4;
6496	type = GL_UNSIGNED_SHORT;
6497	cbAttrib = 4 * sizeof(uint16_t);
6498	break;
6499
6500	case SVGA3D_DECLTYPE_USHORT2N:
6501	normalized = GL_TRUE;
6502	size = 2;
6503	type = GL_UNSIGNED_SHORT;
6504	cbAttrib = 2 * sizeof(uint16_t);
6505	break;
6506
6507	case SVGA3D_DECLTYPE_UDEC3:
6508	size = 3;
6509	type = GL_UNSIGNED_INT_2_10_10_10_REV; /** @todo correct? */
6510	cbAttrib = sizeof(uint32_t);
6511	break;
6512
6513	case SVGA3D_DECLTYPE_DEC3N:
6514	normalized = true;
6515	size = 3;
6516	type = GL_INT_2_10_10_10_REV; /** @todo correct? */
6517	cbAttrib = sizeof(uint32_t);
6518	break;
6519
6520	case SVGA3D_DECLTYPE_FLOAT16_2:
6521	size = 2;
6522	type = GL_HALF_FLOAT;
6523	cbAttrib = 2 * sizeof(uint16_t);
6524	break;
6525	case SVGA3D_DECLTYPE_FLOAT16_4:
6526	size = 4;
6527	type = GL_HALF_FLOAT;
6528	cbAttrib = 4 * sizeof(uint16_t);
6529	break;
6530	default:
6531	AssertFailedReturn(VERR_INVALID_PARAMETER);
6532	}
6533
6534	//pVertexElement->Method = identity.method;
6535	//pVertexElement->Usage = identity.usage;
6536
6537	return VINF_SUCCESS;
6538	}
6539
6540	static float vmsvga3dFloat16To32(uint16_t f16)
6541	{
6542	/* From Wiki */
6543	#ifndef INFINITY
6544	static uint32_t const sBitsINFINITY = UINT32_C(0x7f800000);
6545	#define INFINITY ((float const )&sBitsINFINITY)
6546	#endif
6547	#ifndef NAN
6548	static uint32_t const sBitsNAN = UINT32_C(0x7fc00000);
6549	#define NAN ((float const )&sBitsNAN)
6550	#endif
6551
6552	uint16_t const s = (f16 >> UINT16_C(15)) & UINT16_C(0x1);
6553	uint16_t const e = (f16 >> UINT16_C(10)) & UINT16_C(0x1f);
6554	uint16_t const m = (f16 ) & UINT16_C(0x3ff);
6555
6556	float result = s ? 1.0f : -1.0f;
6557	if (e == 0)
6558	{
6559	if (m == 0)
6560	result = 0.0f; / zero, -0 */
6561	else
6562	result = (float)m / 1024.0f / 16384.0f; / subnormal numbers: sign * 2^-14 * 0.m */
6563	}
6564	else if (e == 0x1f)
6565	{
6566	if (m == 0)
6567	result = INFINITY; / +-infinity */
6568	else
6569	result = NAN; /* NAN */
6570	}
6571	else
6572	{
6573	result = powf(2.0f, (float)e - 15.0f) (1.0f + (float)m / 1024.0f); /* sign * 2^(e-15) * 1.m */
6574	}
6575
6576	return result;
6577	}
6578
6579	/* Set a vertex attribute according to VMSVGA vertex declaration. */
6580	static int vmsvga3dSetVertexAttrib(PVMSVGA3DSTATE pState, GLuint index, SVGA3dVertexArrayIdentity const pIdentity, GLvoid const pv)
6581	{
6582	switch (pIdentity->type)
6583	{
6584	case SVGA3D_DECLTYPE_FLOAT1:
6585	{
6586	/* "One-component float expanded to (float, 0, 0, 1)." */
6587	GLfloat const p = (GLfloat )pv;
6588	GLfloat const v[4] = { p[0], 0.0f, 0.0f, 1.0f };
6589	pState->ext.glVertexAttrib4fv(index, v);
6590	break;
6591	}
6592	case SVGA3D_DECLTYPE_FLOAT2:
6593	{
6594	/* "Two-component float expanded to (float, float, 0, 1)." */
6595	GLfloat const p = (GLfloat )pv;
6596	GLfloat const v[4] = { p[0], p[1], 0.0f, 1.0f };
6597	pState->ext.glVertexAttrib4fv(index, v);
6598	break;
6599	}
6600	case SVGA3D_DECLTYPE_FLOAT3:
6601	{
6602	/* "Three-component float expanded to (float, float, float, 1)." */
6603	GLfloat const p = (GLfloat )pv;
6604	GLfloat const v[4] = { p[0], p[1], p[2], 1.0f };
6605	pState->ext.glVertexAttrib4fv(index, v);
6606	break;
6607	}
6608	case SVGA3D_DECLTYPE_FLOAT4:
6609	pState->ext.glVertexAttrib4fv(index, (GLfloat const *)pv);
6610	break;
6611	case SVGA3D_DECLTYPE_D3DCOLOR:
6612	/** @todo Need to swap bytes? */
6613	pState->ext.glVertexAttrib4Nubv(index, (GLubyte const *)pv);
6614	break;
6615	case SVGA3D_DECLTYPE_UBYTE4:
6616	pState->ext.glVertexAttrib4ubv(index, (GLubyte const *)pv);
6617	break;
6618	case SVGA3D_DECLTYPE_SHORT2:
6619	{
6620	/* "Two-component, signed short expanded to (value, value, 0, 1)." */
6621	GLshort const p = (GLshort const )pv;
6622	GLshort const v[4] = { p[0], p[1], 0, 1 };
6623	pState->ext.glVertexAttrib4sv(index, v);
6624	break;
6625	}
6626	case SVGA3D_DECLTYPE_SHORT4:
6627	pState->ext.glVertexAttrib4sv(index, (GLshort const *)pv);
6628	break;
6629	case SVGA3D_DECLTYPE_UBYTE4N:
6630	pState->ext.glVertexAttrib4Nubv(index, (GLubyte const *)pv);
6631	break;
6632	case SVGA3D_DECLTYPE_SHORT2N:
6633	{
6634	/* "Normalized, two-component, signed short, expanded to (first short/32767.0, second short/32767.0, 0, 1)." */
6635	GLshort const p = (GLshort const )pv;
6636	GLshort const v[4] = { p[0], p[1], 0, 1 };
6637	pState->ext.glVertexAttrib4Nsv(index, v);
6638	break;
6639	}
6640	case SVGA3D_DECLTYPE_SHORT4N:
6641	pState->ext.glVertexAttrib4Nsv(index, (GLshort const *)pv);
6642	break;
6643	case SVGA3D_DECLTYPE_USHORT2N:
6644	{
6645	GLushort const p = (GLushort const )pv;
6646	GLushort const v[4] = { p[0], p[1], 0, 1 };
6647	pState->ext.glVertexAttrib4Nusv(index, v);
6648	break;
6649	}
6650	case SVGA3D_DECLTYPE_USHORT4N:
6651	pState->ext.glVertexAttrib4Nusv(index, (GLushort const *)pv);
6652	break;
6653	case SVGA3D_DECLTYPE_UDEC3:
6654	{
6655	/** @todo Test */
6656	/* "Three-component, unsigned, 10 10 10 format expanded to (value, value, value, 1)." */
6657	uint32_t const u32 = (uint32_t )pv;
6658	GLfloat const v[4] = { (float)(u32 & 0x3ff), (float)((u32 >> 10) & 0x3ff), (float)((u32 >> 20) & 0x3ff), 1.0f };
6659	pState->ext.glVertexAttrib4fv(index, v);
6660	break;
6661	}
6662	case SVGA3D_DECLTYPE_DEC3N:
6663	{
6664	/** @todo Test */
6665	/* "Three-component, signed, 10 10 10 format normalized and expanded to (v[0]/511.0, v[1]/511.0, v[2]/511.0, 1)." */
6666	uint32_t const u32 = (uint32_t )pv;
6667	GLfloat const v[4] = { (u32 & 0x3ff) / 511.0f, ((u32 >> 10) & 0x3ff) / 511.0f, ((u32 >> 20) & 0x3ff) / 511.0f, 1.0f };
6668	pState->ext.glVertexAttrib4fv(index, v);
6669	break;
6670	}
6671	case SVGA3D_DECLTYPE_FLOAT16_2:
6672	{
6673	/** @todo Test */
6674	/* "Two-component, 16-bit, floating point expanded to (value, value, 0, 1)." */
6675	uint16_t const p = (uint16_t )pv;
6676	GLfloat const v[4] = { vmsvga3dFloat16To32(p[0]), vmsvga3dFloat16To32(p[1]), 0.0f, 1.0f };
6677	pState->ext.glVertexAttrib4fv(index, v);
6678	break;
6679	}
6680	case SVGA3D_DECLTYPE_FLOAT16_4:
6681	{
6682	/** @todo Test */
6683	uint16_t const p = (uint16_t )pv;
6684	GLfloat const v[4] = { vmsvga3dFloat16To32(p[0]), vmsvga3dFloat16To32(p[1]),
6685	vmsvga3dFloat16To32(p[2]), vmsvga3dFloat16To32(p[3]) };
6686	pState->ext.glVertexAttrib4fv(index, v);
6687	break;
6688	}
6689	default:
6690	AssertFailedReturn(VERR_INVALID_PARAMETER);
6691	}
6692
6693	return VINF_SUCCESS;
6694	}
6695
6696	/* Convert VMWare primitive type to its OpenGL equivalent. */
6697	/* Calculate the vertex count based on the primitive type and nr of primitives. */
6698	int vmsvga3dPrimitiveType2OGL(SVGA3dPrimitiveType PrimitiveType, GLenum pMode, uint32_t cPrimitiveCount, uint32_t pcVertices)
6699	{
6700	switch (PrimitiveType)
6701	{
6702	case SVGA3D_PRIMITIVE_TRIANGLELIST:
6703	*pMode = GL_TRIANGLES;
6704	pcVertices = cPrimitiveCount 3;
6705	break;
6706	case SVGA3D_PRIMITIVE_POINTLIST:
6707	*pMode = GL_POINTS;
6708	*pcVertices = cPrimitiveCount;
6709	break;
6710	case SVGA3D_PRIMITIVE_LINELIST:
6711	*pMode = GL_LINES;
6712	pcVertices = cPrimitiveCount 2;
6713	break;
6714	case SVGA3D_PRIMITIVE_LINESTRIP:
6715	*pMode = GL_LINE_STRIP;
6716	*pcVertices = cPrimitiveCount + 1;
6717	break;
6718	case SVGA3D_PRIMITIVE_TRIANGLESTRIP:
6719	*pMode = GL_TRIANGLE_STRIP;
6720	*pcVertices = cPrimitiveCount + 2;
6721	break;
6722	case SVGA3D_PRIMITIVE_TRIANGLEFAN:
6723	*pMode = GL_TRIANGLE_FAN;
6724	*pcVertices = cPrimitiveCount + 2;
6725	break;
6726	default:
6727	return VERR_INVALID_PARAMETER;
6728	}
6729	return VINF_SUCCESS;
6730	}
6731
6732	static int vmsvga3dResetTransformMatrices(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
6733	{
6734	int rc;
6735
6736	/* Reset the view matrix (also takes the world matrix into account). */
6737	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].fValid == true)
6738	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_VIEW,
6739	pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
6740	else
6741	{
6742	float matrix[16];
6743
6744	/* identity matrix if no matrix set. */
6745	memset(matrix, 0, sizeof(matrix));
6746	matrix[0] = 1.0;
6747	matrix[5] = 1.0;
6748	matrix[10] = 1.0;
6749	matrix[15] = 1.0;
6750	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_VIEW, matrix);
6751	}
6752
6753	/* Reset the projection matrix. */
6754	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].fValid == true)
6755	{
6756	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_PROJECTION, pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].matrix);
6757	}
6758	else
6759	{
6760	float matrix[16];
6761
6762	/* identity matrix if no matrix set. */
6763	memset(matrix, 0, sizeof(matrix));
6764	matrix[0] = 1.0;
6765	matrix[5] = 1.0;
6766	matrix[10] = 1.0;
6767	matrix[15] = 1.0;
6768	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_PROJECTION, matrix);
6769	}
6770	AssertRC(rc);
6771	return rc;
6772	}
6773
6774	static int vmsvga3dDrawPrimitivesProcessVertexDecls(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext,
6775	uint32_t iVertexDeclBase, uint32_t numVertexDecls,
6776	SVGA3dVertexDecl *pVertexDecl,
6777	SVGA3dVertexDivisor const *paVertexDivisors)
6778	{
6779	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6780	unsigned const sidVertex = pVertexDecl[0].array.surfaceId;
6781
6782	PVMSVGA3DSURFACE pVertexSurface;
6783	int rc = vmsvga3dSurfaceFromSid(pState, sidVertex, &pVertexSurface);
6784	AssertRCReturn(rc, rc);
6785
6786	Log(("vmsvga3dDrawPrimitives: vertex surface sid=%u\n", sidVertex));
6787
6788	/* Create and/or bind the vertex buffer. */
6789	if (pVertexSurface->oglId.buffer == OPENGL_INVALID_ID)
6790	{
6791	Log(("vmsvga3dDrawPrimitives: create vertex buffer fDirty=%d size=%x bytes\n", pVertexSurface->fDirty, pVertexSurface->paMipmapLevels[0].cbSurface));
6792	PVMSVGA3DCONTEXT pSavedCtx = pContext;
6793	pContext = &pState->SharedCtx;
6794	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6795
6796	pState->ext.glGenBuffers(1, &pVertexSurface->oglId.buffer);
6797	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6798	pVertexSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_BUFFER;
6799
6800	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pVertexSurface->oglId.buffer);
6801	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6802
6803	Assert(pVertexSurface->fDirty);
6804	/** @todo rethink usage dynamic/static */
6805	pState->ext.glBufferData(GL_ARRAY_BUFFER, pVertexSurface->paMipmapLevels[0].cbSurface, pVertexSurface->paMipmapLevels[0].pSurfaceData, GL_DYNAMIC_DRAW);
6806	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6807
6808	pVertexSurface->paMipmapLevels[0].fDirty = false;
6809	pVertexSurface->fDirty = false;
6810
6811	pVertexSurface->surfaceFlags \|= SVGA3D_SURFACE_HINT_VERTEXBUFFER;
6812
6813	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, OPENGL_INVALID_ID);
6814	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6815
6816	pContext = pSavedCtx;
6817	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6818	}
6819
6820	Assert(pVertexSurface->fDirty == false);
6821	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pVertexSurface->oglId.buffer);
6822	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6823
6824	/* Setup the vertex declarations. */
6825	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
6826	{
6827	GLint size;
6828	GLenum type;
6829	GLboolean normalized;
6830	uint32_t cbAttrib;
6831	GLuint index = iVertexDeclBase + iVertex;
6832
6833	Log(("vmsvga3dDrawPrimitives: array index %d type=%s (%d) method=%s (%d) usage=%s (%d) usageIndex=%d stride=%d offset=%d\n", index, vmsvgaDeclType2String(pVertexDecl[iVertex].identity.type), pVertexDecl[iVertex].identity.type, vmsvgaDeclMethod2String(pVertexDecl[iVertex].identity.method), pVertexDecl[iVertex].identity.method, vmsvgaDeclUsage2String(pVertexDecl[iVertex].identity.usage), pVertexDecl[iVertex].identity.usage, pVertexDecl[iVertex].identity.usageIndex, pVertexDecl[iVertex].array.stride, pVertexDecl[iVertex].array.offset));
6834
6835	rc = vmsvga3dVertexDecl2OGL(pVertexDecl[iVertex].identity, size, type, normalized, cbAttrib);
6836	AssertRCReturn(rc, rc);
6837
6838	ASSERT_GUEST_RETURN( pVertexSurface->paMipmapLevels[0].cbSurface >= pVertexDecl[iVertex].array.offset
6839	&& pVertexSurface->paMipmapLevels[0].cbSurface - pVertexDecl[iVertex].array.offset >= cbAttrib,
6840	VERR_INVALID_PARAMETER);
6841	RT_UNTRUSTED_VALIDATED_FENCE();
6842
6843	if (pContext->state.shidVertex != SVGA_ID_INVALID)
6844	{
6845	/* Use numbered vertex arrays (or attributes) when shaders are active. */
6846	if (pVertexDecl[iVertex].array.stride)
6847	{
6848	pState->ext.glEnableVertexAttribArray(index);
6849	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6850	pState->ext.glVertexAttribPointer(index, size, type, normalized, pVertexDecl[iVertex].array.stride,
6851	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6852	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6853
6854	GLuint divisor = paVertexDivisors && paVertexDivisors[index].instanceData ? 1 : 0;
6855	pState->ext.glVertexAttribDivisor(index, divisor);
6856	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6857
6858	/** @todo case SVGA3D_DECLUSAGE_COLOR: color component order not identical!! test GL_BGRA!! */
6859	}
6860	else
6861	{
6862	/*
6863	* D3D and OpenGL have a different meaning of value zero for the vertex array stride:
6864	* - D3D (VMSVGA): "use a zero stride to tell the runtime not to increment the vertex buffer offset."
6865	* - OpenGL: "If stride is 0, the generic vertex attributes are understood to be tightly packed in the array."
6866	* VMSVGA uses the D3D semantics.
6867	*
6868	* Use glVertexAttrib in order to tell OpenGL to reuse the zero stride attributes for each vertex.
6869	*/
6870	pState->ext.glDisableVertexAttribArray(index);
6871	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6872
6873	const GLvoid v = (uint8_t )pVertexSurface->paMipmapLevels[0].pSurfaceData + pVertexDecl[iVertex].array.offset;
6874	vmsvga3dSetVertexAttrib(pState, index, &pVertexDecl[iVertex].identity, v);
6875	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6876	}
6877	}
6878	else
6879	{
6880	if (pVertexDecl[iVertex].array.stride == 0)
6881	{
6882	/* Zero stride means that the attribute pointer must not be increased.
6883	* See comment about stride in vmsvga3dDrawPrimitives.
6884	*/
6885	LogRelMax(8, ("VMSVGA: Warning: zero stride array in fixed function pipeline\n"));
6886	AssertFailed();
6887	}
6888
6889	/* Use the predefined selection of vertex streams for the fixed pipeline. */
6890	switch (pVertexDecl[iVertex].identity.usage)
6891	{
6892	case SVGA3D_DECLUSAGE_POSITIONT:
6893	case SVGA3D_DECLUSAGE_POSITION:
6894	{
6895	glEnableClientState(GL_VERTEX_ARRAY);
6896	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6897	glVertexPointer(size, type, pVertexDecl[iVertex].array.stride,
6898	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6899	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6900	break;
6901	}
6902	case SVGA3D_DECLUSAGE_BLENDWEIGHT:
6903	AssertFailed();
6904	break;
6905	case SVGA3D_DECLUSAGE_BLENDINDICES:
6906	AssertFailed();
6907	break;
6908	case SVGA3D_DECLUSAGE_NORMAL:
6909	glEnableClientState(GL_NORMAL_ARRAY);
6910	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6911	glNormalPointer(type, pVertexDecl[iVertex].array.stride,
6912	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6913	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6914	break;
6915	case SVGA3D_DECLUSAGE_PSIZE:
6916	AssertFailed();
6917	break;
6918	case SVGA3D_DECLUSAGE_TEXCOORD:
6919	/* Specify the affected texture unit. */
6920	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x103
6921	glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6922	#else
6923	pState->ext.glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6924	#endif
6925	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
6926	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6927	glTexCoordPointer(size, type, pVertexDecl[iVertex].array.stride,
6928	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6929	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6930	break;
6931	case SVGA3D_DECLUSAGE_TANGENT:
6932	AssertFailed();
6933	break;
6934	case SVGA3D_DECLUSAGE_BINORMAL:
6935	AssertFailed();
6936	break;
6937	case SVGA3D_DECLUSAGE_TESSFACTOR:
6938	AssertFailed();
6939	break;
6940	case SVGA3D_DECLUSAGE_COLOR: /** @todo color component order not identical!! test GL_BGRA!! */
6941	glEnableClientState(GL_COLOR_ARRAY);
6942	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6943	glColorPointer(size, type, pVertexDecl[iVertex].array.stride,
6944	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6945	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6946	break;
6947	case SVGA3D_DECLUSAGE_FOG:
6948	glEnableClientState(GL_FOG_COORD_ARRAY);
6949	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6950	pState->ext.glFogCoordPointer(type, pVertexDecl[iVertex].array.stride,
6951	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6952	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6953	break;
6954	case SVGA3D_DECLUSAGE_DEPTH:
6955	AssertFailed();
6956	break;
6957	case SVGA3D_DECLUSAGE_SAMPLE:
6958	AssertFailed();
6959	break;
6960	case SVGA3D_DECLUSAGE_MAX: AssertFailed(); break; /* shut up gcc */
6961	}
6962	}
6963
6964	#ifdef LOG_ENABLED
6965	if (pVertexDecl[iVertex].array.stride == 0)
6966	Log(("vmsvga3dDrawPrimitives: stride == 0! Can be valid\n"));
6967	#endif
6968	}
6969
6970	return VINF_SUCCESS;
6971	}
6972
6973	static int vmsvga3dDrawPrimitivesCleanupVertexDecls(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t iVertexDeclBase,
6974	uint32_t numVertexDecls, SVGA3dVertexDecl *pVertexDecl)
6975	{
6976	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6977
6978	/* Clean up the vertex declarations. */
6979	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
6980	{
6981	if (pVertexDecl[iVertex].identity.usage == SVGA3D_DECLUSAGE_POSITIONT)
6982	{
6983	/* Reset the transformation matrices in case of a switch back from pretransformed mode. */
6984	Log(("vmsvga3dDrawPrimitivesCleanupVertexDecls: reset world and projection matrices after transformation reset (pre-transformed -> transformed)\n"));
6985	vmsvga3dResetTransformMatrices(pThisCC, pContext);
6986	}
6987
6988	if (pContext->state.shidVertex != SVGA_ID_INVALID)
6989	{
6990	/* Use numbered vertex arrays when shaders are active. */
6991	pState->ext.glVertexAttribDivisor(iVertexDeclBase + iVertex, 0);
6992	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6993	pState->ext.glDisableVertexAttribArray(iVertexDeclBase + iVertex);
6994	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6995	}
6996	else
6997	{
6998	/* Use the predefined selection of vertex streams for the fixed pipeline. */
6999	switch (pVertexDecl[iVertex].identity.usage)
7000	{
7001	case SVGA3D_DECLUSAGE_POSITION:
7002	case SVGA3D_DECLUSAGE_POSITIONT:
7003	glDisableClientState(GL_VERTEX_ARRAY);
7004	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7005	break;
7006	case SVGA3D_DECLUSAGE_BLENDWEIGHT:
7007	break;
7008	case SVGA3D_DECLUSAGE_BLENDINDICES:
7009	break;
7010	case SVGA3D_DECLUSAGE_NORMAL:
7011	glDisableClientState(GL_NORMAL_ARRAY);
7012	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7013	break;
7014	case SVGA3D_DECLUSAGE_PSIZE:
7015	break;
7016	case SVGA3D_DECLUSAGE_TEXCOORD:
7017	/* Specify the affected texture unit. */
7018	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x103
7019	glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
7020	#else
7021	pState->ext.glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
7022	#endif
7023	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
7024	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7025	break;
7026	case SVGA3D_DECLUSAGE_TANGENT:
7027	break;
7028	case SVGA3D_DECLUSAGE_BINORMAL:
7029	break;
7030	case SVGA3D_DECLUSAGE_TESSFACTOR:
7031	break;
7032	case SVGA3D_DECLUSAGE_COLOR: /** @todo color component order not identical!! */
7033	glDisableClientState(GL_COLOR_ARRAY);
7034	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7035	break;
7036	case SVGA3D_DECLUSAGE_FOG:
7037	glDisableClientState(GL_FOG_COORD_ARRAY);
7038	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7039	break;
7040	case SVGA3D_DECLUSAGE_DEPTH:
7041	break;
7042	case SVGA3D_DECLUSAGE_SAMPLE:
7043	break;
7044	case SVGA3D_DECLUSAGE_MAX: AssertFailed(); break; /* shut up gcc */
7045	}
7046	}
7047	}
7048	/* Unbind the vertex buffer after usage. */
7049	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
7050	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7051	return VINF_SUCCESS;
7052	}
7053
7054	static DECLCALLBACK(int) vmsvga3dBackDrawPrimitives(PVGASTATECC pThisCC, uint32_t cid, uint32_t numVertexDecls, SVGA3dVertexDecl *pVertexDecl,
7055	uint32_t numRanges, SVGA3dPrimitiveRange *pRange, uint32_t cVertexDivisor,
7056	SVGA3dVertexDivisor *pVertexDivisor)
7057	{
7058	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7059	AssertReturn(pState, VERR_INTERNAL_ERROR);
7060	uint32_t iCurrentVertex;
7061
7062	Log(("vmsvga3dDrawPrimitives cid=%u numVertexDecls=%d numRanges=%d, cVertexDivisor=%d\n", cid, numVertexDecls, numRanges, cVertexDivisor));
7063
7064	/* Caller already check these, but it cannot hurt to check again... */
7065	AssertReturn(numVertexDecls && numVertexDecls <= SVGA3D_MAX_VERTEX_ARRAYS, VERR_INVALID_PARAMETER);
7066	AssertReturn(numRanges && numRanges <= SVGA3D_MAX_DRAW_PRIMITIVE_RANGES, VERR_INVALID_PARAMETER);
7067	AssertReturn(!cVertexDivisor \|\| cVertexDivisor == numVertexDecls, VERR_INVALID_PARAMETER);
7068
7069	if (!cVertexDivisor)
7070	pVertexDivisor = NULL; /* Be sure. */
7071
7072	PVMSVGA3DCONTEXT pContext;
7073	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7074	AssertRCReturn(rc, rc);
7075
7076	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7077
7078	/* Check for pretransformed vertex declarations. */
7079	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
7080	{
7081	switch (pVertexDecl[iVertex].identity.usage)
7082	{
7083	case SVGA3D_DECLUSAGE_POSITIONT:
7084	Log(("ShaderSetPositionTransformed: (%d,%d)\n", pContext->state.RectViewPort.w, pContext->state.RectViewPort.h));
7085	RT_FALL_THRU();
7086	case SVGA3D_DECLUSAGE_POSITION:
7087	ShaderSetPositionTransformed(pContext->pShaderContext, pContext->state.RectViewPort.w,
7088	pContext->state.RectViewPort.h,
7089	pVertexDecl[iVertex].identity.usage == SVGA3D_DECLUSAGE_POSITIONT);
7090	break;
7091	default: /* Shut up MSC. */ break;
7092	}
7093	}
7094
7095	/* Flush any shader changes; after (!) checking the vertex declarations to deal with pre-transformed vertices. */
7096	if (pContext->pShaderContext)
7097	{
7098	uint32_t rtHeight = 0;
7099
7100	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0] != SVGA_ID_INVALID)
7101	{
7102	PVMSVGA3DSURFACE pRenderTarget;
7103	rc = vmsvga3dSurfaceFromSid(pState, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0], &pRenderTarget);
7104	AssertRCReturn(rc, rc);
7105
7106	rtHeight = pRenderTarget->paMipmapLevels[0].mipmapSize.height;
7107	}
7108
7109	ShaderUpdateState(pContext->pShaderContext, rtHeight);
7110	}
7111
7112	/* Try to figure out if instancing is used.
7113	* Support simple instancing case with one set of indexed data and one set per-instance data.
7114	*/
7115	uint32_t cInstances = 0;
7116	for (uint32_t iVertexDivisor = 0; iVertexDivisor < cVertexDivisor; ++iVertexDivisor)
7117	{
7118	if (pVertexDivisor[iVertexDivisor].indexedData)
7119	{
7120	if (cInstances == 0)
7121	cInstances = pVertexDivisor[iVertexDivisor].count;
7122	else
7123	Assert(cInstances == pVertexDivisor[iVertexDivisor].count);
7124	}
7125	else if (pVertexDivisor[iVertexDivisor].instanceData)
7126	{
7127	Assert(pVertexDivisor[iVertexDivisor].count == 1);
7128	}
7129	}
7130
7131	/* Process all vertex declarations. Each vertex buffer is represented by one stream. */
7132	iCurrentVertex = 0;
7133	while (iCurrentVertex < numVertexDecls)
7134	{
7135	uint32_t sidVertex = SVGA_ID_INVALID;
7136	uint32_t iVertex;
7137
7138	for (iVertex = iCurrentVertex; iVertex < numVertexDecls; iVertex++)
7139	{
7140	if ( sidVertex != SVGA_ID_INVALID
7141	&& pVertexDecl[iVertex].array.surfaceId != sidVertex
7142	)
7143	break;
7144	sidVertex = pVertexDecl[iVertex].array.surfaceId;
7145	}
7146
7147	rc = vmsvga3dDrawPrimitivesProcessVertexDecls(pThisCC, pContext, iCurrentVertex, iVertex - iCurrentVertex,
7148	&pVertexDecl[iCurrentVertex], pVertexDivisor);
7149	AssertRCReturn(rc, rc);
7150
7151	iCurrentVertex = iVertex;
7152	}
7153
7154	/* Now draw the primitives. */
7155	for (unsigned iPrimitive = 0; iPrimitive < numRanges; iPrimitive++)
7156	{
7157	GLenum modeDraw;
7158	unsigned const sidIndex = pRange[iPrimitive].indexArray.surfaceId;
7159	PVMSVGA3DSURFACE pIndexSurface = NULL;
7160	unsigned cVertices;
7161
7162	Log(("Primitive %d: type %s\n", iPrimitive, vmsvga3dPrimitiveType2String(pRange[iPrimitive].primType)));
7163	rc = vmsvga3dPrimitiveType2OGL(pRange[iPrimitive].primType, &modeDraw, pRange[iPrimitive].primitiveCount, &cVertices);
7164	if (RT_FAILURE(rc))
7165	{
7166	AssertRC(rc);
7167	goto internal_error;
7168	}
7169
7170	if (sidIndex != SVGA3D_INVALID_ID)
7171	{
7172	AssertMsg(pRange[iPrimitive].indexWidth == sizeof(uint32_t) \|\| pRange[iPrimitive].indexWidth == sizeof(uint16_t), ("Unsupported primitive width %d\n", pRange[iPrimitive].indexWidth));
7173
7174	rc = vmsvga3dSurfaceFromSid(pState, sidIndex, &pIndexSurface);
7175	if (RT_FAILURE(rc))
7176	{
7177	AssertRC(rc);
7178	goto internal_error;
7179	}
7180
7181	Log(("vmsvga3dDrawPrimitives: index surface sid=%u\n", sidIndex));
7182
7183	if (pIndexSurface->oglId.buffer == OPENGL_INVALID_ID)
7184	{
7185	Log(("vmsvga3dDrawPrimitives: create index buffer fDirty=%d size=%x bytes\n", pIndexSurface->fDirty, pIndexSurface->paMipmapLevels[0].cbSurface));
7186	pContext = &pState->SharedCtx;
7187	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7188
7189	pState->ext.glGenBuffers(1, &pIndexSurface->oglId.buffer);
7190	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7191	pIndexSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_BUFFER;
7192
7193	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->oglId.buffer);
7194	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7195
7196	Assert(pIndexSurface->fDirty);
7197
7198	/** @todo rethink usage dynamic/static */
7199	pState->ext.glBufferData(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->paMipmapLevels[0].cbSurface, pIndexSurface->paMipmapLevels[0].pSurfaceData, GL_DYNAMIC_DRAW);
7200	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7201
7202	pIndexSurface->paMipmapLevels[0].fDirty = false;
7203	pIndexSurface->fDirty = false;
7204
7205	pIndexSurface->surfaceFlags \|= SVGA3D_SURFACE_HINT_INDEXBUFFER;
7206
7207	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, OPENGL_INVALID_ID);
7208	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7209
7210	pContext = pState->papContexts[cid];
7211	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7212	}
7213	Assert(pIndexSurface->fDirty == false);
7214
7215	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->oglId.buffer);
7216	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7217	}
7218
7219	if (!pIndexSurface)
7220	{
7221	/* Render without an index buffer */
7222	Log(("DrawPrimitive %d cPrimitives=%d cVertices=%d index index bias=%d cInstances=%d\n", modeDraw, pRange[iPrimitive].primitiveCount, cVertices, pRange[iPrimitive].indexBias, cInstances));
7223	if (cInstances == 0)
7224	{
7225	glDrawArrays(modeDraw, pRange[iPrimitive].indexBias, cVertices);
7226	}
7227	else
7228	{
7229	pState->ext.glDrawArraysInstanced(modeDraw, pRange[iPrimitive].indexBias, cVertices, cInstances);
7230	}
7231	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7232	}
7233	else
7234	{
7235	Assert(pRange[iPrimitive].indexWidth == pRange[iPrimitive].indexArray.stride);
7236
7237	GLenum indexType;
7238	switch (pRange[iPrimitive].indexWidth)
7239	{
7240	case 1: indexType = GL_UNSIGNED_BYTE; break;
7241	case 2: indexType = GL_UNSIGNED_SHORT; break;
7242	default: AssertMsgFailed(("indexWidth %d\n", pRange[iPrimitive].indexWidth));
7243	RT_FALL_THROUGH();
7244	case 4: indexType = GL_UNSIGNED_INT; break;
7245	}
7246
7247	Log(("DrawIndexedPrimitive %d cPrimitives=%d cVertices=%d hint.first=%d hint.last=%d index offset=%d primitivecount=%d index width=%d index bias=%d cInstances=%d\n", modeDraw, pRange[iPrimitive].primitiveCount, cVertices, pVertexDecl[0].rangeHint.first, pVertexDecl[0].rangeHint.last, pRange[iPrimitive].indexArray.offset, pRange[iPrimitive].primitiveCount, pRange[iPrimitive].indexWidth, pRange[iPrimitive].indexBias, cInstances));
7248	if (cInstances == 0)
7249	{
7250	/* Render with an index buffer */
7251	if (pRange[iPrimitive].indexBias == 0)
7252	glDrawElements(modeDraw,
7253	cVertices,
7254	indexType,
7255	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset); / byte offset in indices buffer */
7256	else
7257	pState->ext.glDrawElementsBaseVertex(modeDraw,
7258	cVertices,
7259	indexType,
7260	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7261	pRange[iPrimitive].indexBias); /* basevertex */
7262	}
7263	else
7264	{
7265	/* Render with an index buffer */
7266	if (pRange[iPrimitive].indexBias == 0)
7267	pState->ext.glDrawElementsInstanced(modeDraw,
7268	cVertices,
7269	indexType,
7270	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7271	cInstances);
7272	else
7273	pState->ext.glDrawElementsInstancedBaseVertex(modeDraw,
7274	cVertices,
7275	indexType,
7276	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7277	cInstances,
7278	pRange[iPrimitive].indexBias); /* basevertex */
7279	}
7280	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7281
7282	/* Unbind the index buffer after usage. */
7283	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
7284	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7285	}
7286	}
7287
7288	internal_error:
7289
7290	/* Deactivate the vertex declarations. */
7291	iCurrentVertex = 0;
7292	while (iCurrentVertex < numVertexDecls)
7293	{
7294	uint32_t sidVertex = SVGA_ID_INVALID;
7295	uint32_t iVertex;
7296
7297	for (iVertex = iCurrentVertex; iVertex < numVertexDecls; iVertex++)
7298	{
7299	if ( sidVertex != SVGA_ID_INVALID
7300	&& pVertexDecl[iVertex].array.surfaceId != sidVertex
7301	)
7302	break;
7303	sidVertex = pVertexDecl[iVertex].array.surfaceId;
7304	}
7305
7306	rc = vmsvga3dDrawPrimitivesCleanupVertexDecls(pThisCC, pContext, iCurrentVertex,
7307	iVertex - iCurrentVertex, &pVertexDecl[iCurrentVertex]);
7308	AssertRCReturn(rc, rc);
7309
7310	iCurrentVertex = iVertex;
7311	}
7312
7313	#ifdef DEBUG
7314	/* Check whether 'activeTexture' on texture unit 'i' matches what we expect. */
7315	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); ++i)
7316	{
7317	if (pContext->aSidActiveTextures[i] != SVGA3D_INVALID_ID)
7318	{
7319	PVMSVGA3DSURFACE pTexture;
7320	int rc2 = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[i], &pTexture);
7321	AssertContinue(RT_SUCCESS(rc2));
7322
7323	GLint activeTextureUnit = 0;
7324	glGetIntegerv(GL_ACTIVE_TEXTURE, &activeTextureUnit);
7325	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7326
7327	pState->ext.glActiveTexture(GL_TEXTURE0 + i);
7328	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7329
7330	GLint activeTexture = 0;
7331	glGetIntegerv(pTexture->bindingGL, &activeTexture);
7332	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7333
7334	pState->ext.glActiveTexture(activeTextureUnit);
7335	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7336
7337	AssertMsg(pTexture->oglId.texture == (GLuint)activeTexture,
7338	("%d vs %d unit %d (active unit %d) sid=%u\n", pTexture->oglId.texture, activeTexture, i,
7339	activeTextureUnit - GL_TEXTURE0, pContext->aSidActiveTextures[i]));
7340	}
7341	}
7342	#endif
7343
7344	#if 0
7345	/* Dump render target to a bitmap. */
7346	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0] != SVGA3D_INVALID_ID)
7347	{
7348	vmsvga3dUpdateHeapBuffersForSurfaces(pThisCC, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0]);
7349	PVMSVGA3DSURFACE pSurface;
7350	int rc2 = vmsvga3dSurfaceFromSid(pState, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0], &pSurface);
7351	if (RT_SUCCESS(rc2))
7352	vmsvga3dInfoSurfaceToBitmap(NULL, pSurface, "bmpgl", "rt", "-post");
7353	# if 0
7354	/* Stage 0 texture. */
7355	if (pContext->aSidActiveTextures[0] != SVGA3D_INVALID_ID)
7356	{
7357	vmsvga3dUpdateHeapBuffersForSurfaces(pThisCC, pContext->aSidActiveTextures[0]);
7358	rc2 = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[0], &pSurface);
7359	if (RT_SUCCESS(rc2))
7360	vmsvga3dInfoSurfaceToBitmap(NULL, pSurface, "bmpgl", "rt", "-post-tx");
7361	}
7362	# endif
7363	}
7364	#endif
7365
7366	return rc;
7367	}
7368
7369
7370	static DECLCALLBACK(int) vmsvga3dBackShaderDefine(PVGASTATECC pThisCC, uint32_t cid, uint32_t shid, SVGA3dShaderType type, uint32_t cbData, uint32_t *pShaderData)
7371	{
7372	PVMSVGA3DSHADER pShader;
7373	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7374	AssertReturn(pState, VERR_NO_MEMORY);
7375
7376	Log(("vmsvga3dShaderDefine cid=%u shid=%d type=%s cbData=0x%x\n", cid, shid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", cbData));
7377
7378	PVMSVGA3DCONTEXT pContext;
7379	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7380	AssertRCReturn(rc, rc);
7381
7382	AssertReturn(shid < SVGA3D_MAX_SHADER_IDS, VERR_INVALID_PARAMETER);
7383
7384	rc = vmsvga3dShaderParse(type, cbData, pShaderData);
7385	if (RT_FAILURE(rc))
7386	{
7387	AssertRC(rc);
7388	vmsvga3dShaderLogRel("Failed to parse", type, cbData, pShaderData);
7389	return rc;
7390	}
7391
7392	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7393
7394	if (type == SVGA3D_SHADERTYPE_VS)
7395	{
7396	if (shid >= pContext->cVertexShaders)
7397	{
7398	void pvNew = RTMemRealloc(pContext->paVertexShader, sizeof(VMSVGA3DSHADER) (shid + 1));
7399	AssertReturn(pvNew, VERR_NO_MEMORY);
7400	pContext->paVertexShader = (PVMSVGA3DSHADER)pvNew;
7401	memset(&pContext->paVertexShader[pContext->cVertexShaders], 0, sizeof(VMSVGA3DSHADER) * (shid + 1 - pContext->cVertexShaders));
7402	for (uint32_t i = pContext->cVertexShaders; i < shid + 1; i++)
7403	pContext->paVertexShader[i].id = SVGA3D_INVALID_ID;
7404	pContext->cVertexShaders = shid + 1;
7405	}
7406	/* If one already exists with this id, then destroy it now. */
7407	if (pContext->paVertexShader[shid].id != SVGA3D_INVALID_ID)
7408	vmsvga3dBackShaderDestroy(pThisCC, cid, shid, pContext->paVertexShader[shid].type);
7409
7410	pShader = &pContext->paVertexShader[shid];
7411	}
7412	else
7413	{
7414	Assert(type == SVGA3D_SHADERTYPE_PS);
7415	if (shid >= pContext->cPixelShaders)
7416	{
7417	void pvNew = RTMemRealloc(pContext->paPixelShader, sizeof(VMSVGA3DSHADER) (shid + 1));
7418	AssertReturn(pvNew, VERR_NO_MEMORY);
7419	pContext->paPixelShader = (PVMSVGA3DSHADER)pvNew;
7420	memset(&pContext->paPixelShader[pContext->cPixelShaders], 0, sizeof(VMSVGA3DSHADER) * (shid + 1 - pContext->cPixelShaders));
7421	for (uint32_t i = pContext->cPixelShaders; i < shid + 1; i++)
7422	pContext->paPixelShader[i].id = SVGA3D_INVALID_ID;
7423	pContext->cPixelShaders = shid + 1;
7424	}
7425	/* If one already exists with this id, then destroy it now. */
7426	if (pContext->paPixelShader[shid].id != SVGA3D_INVALID_ID)
7427	vmsvga3dBackShaderDestroy(pThisCC, cid, shid, pContext->paPixelShader[shid].type);
7428
7429	pShader = &pContext->paPixelShader[shid];
7430	}
7431
7432	memset(pShader, 0, sizeof(*pShader));
7433	pShader->id = shid;
7434	pShader->cid = cid;
7435	pShader->type = type;
7436	pShader->cbData = cbData;
7437	pShader->pShaderProgram = RTMemAllocZ(cbData);
7438	AssertReturn(pShader->pShaderProgram, VERR_NO_MEMORY);
7439	memcpy(pShader->pShaderProgram, pShaderData, cbData);
7440
7441	#ifdef DUMP_SHADER_DISASSEMBLY
7442	LPD3DXBUFFER pDisassembly;
7443	HRESULT hr = D3DXDisassembleShader((const DWORD *)pShaderData, FALSE, NULL, &pDisassembly);
7444	if (hr == D3D_OK)
7445	{
7446	Log(("Shader disassembly:\n%s\n", pDisassembly->GetBufferPointer()));
7447	pDisassembly->Release();
7448	}
7449	#endif
7450
7451	switch (type)
7452	{
7453	case SVGA3D_SHADERTYPE_VS:
7454	rc = ShaderCreateVertexShader(pContext->pShaderContext, (const uint32_t *)pShaderData, cbData, &pShader->u.pVertexShader);
7455	AssertRC(rc);
7456	break;
7457
7458	case SVGA3D_SHADERTYPE_PS:
7459	rc = ShaderCreatePixelShader(pContext->pShaderContext, (const uint32_t *)pShaderData, cbData, &pShader->u.pPixelShader);
7460	AssertRC(rc);
7461	break;
7462
7463	default:
7464	AssertFailedReturn(VERR_INVALID_PARAMETER);
7465	}
7466	if (rc != VINF_SUCCESS)
7467	{
7468	vmsvga3dShaderLogRel("Failed to create", type, cbData, pShaderData);
7469
7470	RTMemFree(pShader->pShaderProgram);
7471	memset(pShader, 0, sizeof(*pShader));
7472	pShader->id = SVGA3D_INVALID_ID;
7473	}
7474
7475	return rc;
7476	}
7477
7478	static DECLCALLBACK(int) vmsvga3dBackShaderDestroy(PVGASTATECC pThisCC, uint32_t cid, uint32_t shid, SVGA3dShaderType type)
7479	{
7480	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7481	AssertReturn(pState, VERR_NO_MEMORY);
7482	PVMSVGA3DSHADER pShader = NULL;
7483
7484	Log(("vmsvga3dShaderDestroy cid=%u shid=%d type=%s\n", cid, shid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL"));
7485
7486	PVMSVGA3DCONTEXT pContext;
7487	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7488	AssertRCReturn(rc, rc);
7489
7490	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7491
7492	if (type == SVGA3D_SHADERTYPE_VS)
7493	{
7494	if ( shid < pContext->cVertexShaders
7495	&& pContext->paVertexShader[shid].id == shid)
7496	{
7497	pShader = &pContext->paVertexShader[shid];
7498	rc = ShaderDestroyVertexShader(pContext->pShaderContext, pShader->u.pVertexShader);
7499	AssertRC(rc);
7500	}
7501	}
7502	else
7503	{
7504	Assert(type == SVGA3D_SHADERTYPE_PS);
7505	if ( shid < pContext->cPixelShaders
7506	&& pContext->paPixelShader[shid].id == shid)
7507	{
7508	pShader = &pContext->paPixelShader[shid];
7509	rc = ShaderDestroyPixelShader(pContext->pShaderContext, pShader->u.pPixelShader);
7510	AssertRC(rc);
7511	}
7512	}
7513
7514	if (pShader)
7515	{
7516	if (pShader->pShaderProgram)
7517	RTMemFree(pShader->pShaderProgram);
7518	memset(pShader, 0, sizeof(*pShader));
7519	pShader->id = SVGA3D_INVALID_ID;
7520	}
7521	else
7522	AssertFailedReturn(VERR_INVALID_PARAMETER);
7523
7524	return VINF_SUCCESS;
7525	}
7526
7527	static DECLCALLBACK(int) vmsvga3dBackShaderSet(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid, SVGA3dShaderType type, uint32_t shid)
7528	{
7529	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7530	AssertReturn(pState, VERR_NO_MEMORY);
7531	int rc;
7532
7533	Log(("vmsvga3dShaderSet cid=%u type=%s shid=%d\n", cid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", shid));
7534
7535	if (!pContext)
7536	{
7537	rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7538	AssertRCReturn(rc, rc);
7539	}
7540
7541	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7542
7543	if (type == SVGA3D_SHADERTYPE_VS)
7544	{
7545	/* Save for vm state save/restore. */
7546	pContext->state.shidVertex = shid;
7547	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_VERTEXSHADER;
7548
7549	if ( shid < pContext->cVertexShaders
7550	&& pContext->paVertexShader[shid].id == shid)
7551	{
7552	PVMSVGA3DSHADER pShader = &pContext->paVertexShader[shid];
7553	Assert(type == pShader->type);
7554
7555	rc = ShaderSetVertexShader(pContext->pShaderContext, pShader->u.pVertexShader);
7556	AssertRCReturn(rc, rc);
7557	}
7558	else
7559	if (shid == SVGA_ID_INVALID)
7560	{
7561	/* Unselect shader. */
7562	rc = ShaderSetVertexShader(pContext->pShaderContext, NULL);
7563	AssertRCReturn(rc, rc);
7564	}
7565	else
7566	AssertFailedReturn(VERR_INVALID_PARAMETER);
7567	}
7568	else
7569	{
7570	/* Save for vm state save/restore. */
7571	pContext->state.shidPixel = shid;
7572	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_PIXELSHADER;
7573
7574	Assert(type == SVGA3D_SHADERTYPE_PS);
7575	if ( shid < pContext->cPixelShaders
7576	&& pContext->paPixelShader[shid].id == shid)
7577	{
7578	PVMSVGA3DSHADER pShader = &pContext->paPixelShader[shid];
7579	Assert(type == pShader->type);
7580
7581	rc = ShaderSetPixelShader(pContext->pShaderContext, pShader->u.pPixelShader);
7582	AssertRCReturn(rc, rc);
7583	}
7584	else
7585	if (shid == SVGA_ID_INVALID)
7586	{
7587	/* Unselect shader. */
7588	rc = ShaderSetPixelShader(pContext->pShaderContext, NULL);
7589	AssertRCReturn(rc, rc);
7590	}
7591	else
7592	AssertFailedReturn(VERR_INVALID_PARAMETER);
7593	}
7594
7595	return VINF_SUCCESS;
7596	}
7597
7598	static DECLCALLBACK(int) vmsvga3dBackShaderSetConst(PVGASTATECC pThisCC, uint32_t cid, uint32_t reg, SVGA3dShaderType type, SVGA3dShaderConstType ctype, uint32_t cRegisters, uint32_t *pValues)
7599	{
7600	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7601	AssertReturn(pState, VERR_NO_MEMORY);
7602
7603	Log(("vmsvga3dShaderSetConst cid=%u reg=%x type=%s cregs=%d ctype=%x\n", cid, reg, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", cRegisters, ctype));
7604
7605	PVMSVGA3DCONTEXT pContext;
7606	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7607	AssertRCReturn(rc, rc);
7608
7609	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7610
7611	for (uint32_t i = 0; i < cRegisters; i++)
7612	{
7613	#ifdef LOG_ENABLED
7614	switch (ctype)
7615	{
7616	case SVGA3D_CONST_TYPE_FLOAT:
7617	{
7618	float pValuesF = (float )pValues;
7619	Log(("ConstantF %d: value=" FLOAT_FMT_STR ", " FLOAT_FMT_STR ", " FLOAT_FMT_STR ", " FLOAT_FMT_STR "\n",
7620	reg + i, FLOAT_FMT_ARGS(pValuesF[i4 + 0]), FLOAT_FMT_ARGS(pValuesF[i4 + 1]), FLOAT_FMT_ARGS(pValuesF[i4 + 2]), FLOAT_FMT_ARGS(pValuesF[i4 + 3])));
7621	break;
7622	}
7623
7624	case SVGA3D_CONST_TYPE_INT:
7625	Log(("ConstantI %d: value=%d, %d, %d, %d\n", reg + i, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]));
7626	break;
7627
7628	case SVGA3D_CONST_TYPE_BOOL:
7629	Log(("ConstantB %d: value=%d, %d, %d, %d\n", reg + i, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]));
7630	break;
7631
7632	default:
7633	AssertFailedReturn(VERR_INVALID_PARAMETER);
7634	}
7635	#endif
7636	vmsvga3dSaveShaderConst(pContext, reg + i, type, ctype, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]);
7637	}
7638
7639	switch (type)
7640	{
7641	case SVGA3D_SHADERTYPE_VS:
7642	switch (ctype)
7643	{
7644	case SVGA3D_CONST_TYPE_FLOAT:
7645	rc = ShaderSetVertexShaderConstantF(pContext->pShaderContext, reg, (const float *)pValues, cRegisters);
7646	break;
7647
7648	case SVGA3D_CONST_TYPE_INT:
7649	rc = ShaderSetVertexShaderConstantI(pContext->pShaderContext, reg, (const int32_t *)pValues, cRegisters);
7650	break;
7651
7652	case SVGA3D_CONST_TYPE_BOOL:
7653	rc = ShaderSetVertexShaderConstantB(pContext->pShaderContext, reg, (const uint8_t *)pValues, cRegisters);
7654	break;
7655
7656	default:
7657	AssertFailedReturn(VERR_INVALID_PARAMETER);
7658	}
7659	AssertRCReturn(rc, rc);
7660	break;
7661
7662	case SVGA3D_SHADERTYPE_PS:
7663	switch (ctype)
7664	{
7665	case SVGA3D_CONST_TYPE_FLOAT:
7666	rc = ShaderSetPixelShaderConstantF(pContext->pShaderContext, reg, (const float *)pValues, cRegisters);
7667	break;
7668
7669	case SVGA3D_CONST_TYPE_INT:
7670	rc = ShaderSetPixelShaderConstantI(pContext->pShaderContext, reg, (const int32_t *)pValues, cRegisters);
7671	break;
7672
7673	case SVGA3D_CONST_TYPE_BOOL:
7674	rc = ShaderSetPixelShaderConstantB(pContext->pShaderContext, reg, (const uint8_t *)pValues, cRegisters);
7675	break;
7676
7677	default:
7678	AssertFailedReturn(VERR_INVALID_PARAMETER);
7679	}
7680	AssertRCReturn(rc, rc);
7681	break;
7682
7683	default:
7684	AssertFailedReturn(VERR_INVALID_PARAMETER);
7685	}
7686
7687	return VINF_SUCCESS;
7688	}
7689
7690	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryCreate(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7691	{
7692	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7693	AssertReturn(pState->ext.glGenQueries, VERR_NOT_SUPPORTED);
7694	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7695
7696	GLuint idQuery = 0;
7697	pState->ext.glGenQueries(1, &idQuery);
7698	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7699	AssertReturn(idQuery, VERR_INTERNAL_ERROR);
7700	pContext->occlusion.idQuery = idQuery;
7701	return VINF_SUCCESS;
7702	}
7703
7704	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryDelete(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7705	{
7706	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7707	AssertReturn(pState->ext.glDeleteQueries, VERR_NOT_SUPPORTED);
7708	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7709
7710	if (pContext->occlusion.idQuery)
7711	{
7712	pState->ext.glDeleteQueries(1, &pContext->occlusion.idQuery);
7713	}
7714	return VINF_SUCCESS;
7715	}
7716
7717	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryBegin(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7718	{
7719	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7720	AssertReturn(pState->ext.glBeginQuery, VERR_NOT_SUPPORTED);
7721	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7722
7723	pState->ext.glBeginQuery(GL_ANY_SAMPLES_PASSED, pContext->occlusion.idQuery);
7724	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7725	return VINF_SUCCESS;
7726	}
7727
7728	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryEnd(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7729	{
7730	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7731	AssertReturn(pState->ext.glEndQuery, VERR_NOT_SUPPORTED);
7732	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7733
7734	pState->ext.glEndQuery(GL_ANY_SAMPLES_PASSED);
7735	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7736	return VINF_SUCCESS;
7737	}
7738
7739	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryGetData(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t *pu32Pixels)
7740	{
7741	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7742	AssertReturn(pState->ext.glGetQueryObjectuiv, VERR_NOT_SUPPORTED);
7743	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7744
7745	GLuint pixels = 0;
7746	pState->ext.glGetQueryObjectuiv(pContext->occlusion.idQuery, GL_QUERY_RESULT, &pixels);
7747	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7748
7749	*pu32Pixels = (uint32_t)pixels;
7750	return VINF_SUCCESS;
7751	}
7752
7753	/**
7754	* Worker for vmsvga3dUpdateHeapBuffersForSurfaces.
7755	*
7756	* This will allocate heap buffers if necessary, thus increasing the memory
7757	* usage of the process.
7758	*
7759	* @todo Would be interesting to share this code with the saved state code.
7760	*
7761	* @returns VBox status code.
7762	* @param pThisCC The VGA/VMSVGA context.
7763	* @param pSurface The surface to refresh the heap buffers for.
7764	*/
7765	static DECLCALLBACK(int) vmsvga3dBackSurfaceUpdateHeapBuffers(PVGASTATECC pThisCC, PVMSVGA3DSURFACE pSurface)
7766	{
7767	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7768	AssertReturn(pState, VERR_INVALID_STATE);
7769
7770	/*
7771	* Currently we've got trouble retreving bit for DEPTHSTENCIL
7772	* surfaces both for OpenGL and D3D, so skip these here (don't
7773	* wast memory on them).
7774	*/
7775	uint32_t const fSwitchFlags = pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK;
7776	if ( fSwitchFlags != SVGA3D_SURFACE_HINT_DEPTHSTENCIL
7777	&& fSwitchFlags != (SVGA3D_SURFACE_HINT_DEPTHSTENCIL \| SVGA3D_SURFACE_HINT_TEXTURE))
7778	{
7779	/*
7780	* Change OpenGL context to the one the surface is associated with.
7781	*/
7782	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
7783	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7784
7785	/*
7786	* Work thru each mipmap level for each face.
7787	*/
7788	for (uint32_t iFace = 0; iFace < pSurface->cFaces; iFace++)
7789	{
7790	PVMSVGA3DMIPMAPLEVEL pMipmapLevel = &pSurface->paMipmapLevels[iFace * pSurface->cLevels];
7791	for (uint32_t i = 0; i < pSurface->cLevels; i++, pMipmapLevel++)
7792	{
7793	if (VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface))
7794	{
7795	Assert(pMipmapLevel->cbSurface);
7796	Assert(pMipmapLevel->cbSurface == pMipmapLevel->cbSurfacePlane * pMipmapLevel->mipmapSize.depth);
7797
7798	/*
7799	* Make sure we've got surface memory buffer.
7800	*/
7801	uint8_t pbDst = (uint8_t )pMipmapLevel->pSurfaceData;
7802	if (!pbDst)
7803	{
7804	pMipmapLevel->pSurfaceData = pbDst = (uint8_t *)RTMemAllocZ(pMipmapLevel->cbSurface);
7805	AssertReturn(pbDst, VERR_NO_MEMORY);
7806	}
7807
7808	/*
7809	* OpenGL specifics.
7810	*/
7811	switch (pSurface->enmOGLResType)
7812	{
7813	case VMSVGA3D_OGLRESTYPE_TEXTURE:
7814	{
7815	GLint activeTexture;
7816	glGetIntegerv(GL_TEXTURE_BINDING_2D, &activeTexture);
7817	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7818
7819	glBindTexture(GL_TEXTURE_2D, pSurface->oglId.texture);
7820	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7821
7822	/* Set row length and alignment of the output data. */
7823	VMSVGAPACKPARAMS SavedParams;
7824	vmsvga3dOglSetPackParams(pState, pContext, pSurface, &SavedParams);
7825
7826	glGetTexImage(GL_TEXTURE_2D,
7827	i,
7828	pSurface->formatGL,
7829	pSurface->typeGL,
7830	pbDst);
7831	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7832
7833	vmsvga3dOglRestorePackParams(pState, pContext, pSurface, &SavedParams);
7834
7835	/* Restore the old active texture. */
7836	glBindTexture(GL_TEXTURE_2D, activeTexture);
7837	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7838	break;
7839	}
7840
7841	case VMSVGA3D_OGLRESTYPE_BUFFER:
7842	{
7843	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pSurface->oglId.buffer);
7844	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7845
7846	void *pvSrc = pState->ext.glMapBuffer(GL_ARRAY_BUFFER, GL_READ_ONLY);
7847	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7848	if (RT_VALID_PTR(pvSrc))
7849	memcpy(pbDst, pvSrc, pMipmapLevel->cbSurface);
7850	else
7851	AssertPtr(pvSrc);
7852
7853	pState->ext.glUnmapBuffer(GL_ARRAY_BUFFER);
7854	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7855
7856	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
7857	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7858	break;
7859	}
7860
7861	default:
7862	AssertMsgFailed(("%#x\n", fSwitchFlags));
7863	}
7864	}
7865	/* else: There is no data in hardware yet, so whatever we got is already current. */
7866	}
7867	}
7868	}
7869
7870	return VINF_SUCCESS;
7871	}
7872
7873	static DECLCALLBACK(int) vmsvga3dBackQueryInterface(PVGASTATECC pThisCC, char const pszInterfaceName, void pvInterfaceFuncs, size_t cbInterfaceFuncs)
7874	{
7875	RT_NOREF(pThisCC);
7876
7877	int rc = VINF_SUCCESS;
7878	if (RTStrCmp(pszInterfaceName, VMSVGA3D_BACKEND_INTERFACE_NAME_3D) == 0)
7879	{
7880	if (cbInterfaceFuncs == sizeof(VMSVGA3DBACKENDFUNCS3D))
7881	{
7882	if (pvInterfaceFuncs)
7883	{
7884	VMSVGA3DBACKENDFUNCS3D p = (VMSVGA3DBACKENDFUNCS3D )pvInterfaceFuncs;
7885	p->pfnInit = vmsvga3dBackInit;
7886	p->pfnPowerOn = vmsvga3dBackPowerOn;
7887	p->pfnTerminate = vmsvga3dBackTerminate;
7888	p->pfnReset = vmsvga3dBackReset;
7889	p->pfnQueryCaps = vmsvga3dBackQueryCaps;
7890	p->pfnChangeMode = vmsvga3dBackChangeMode;
7891	p->pfnCreateTexture = vmsvga3dBackCreateTexture;
7892	p->pfnSurfaceDestroy = vmsvga3dBackSurfaceDestroy;
7893	p->pfnSurfaceCopy = vmsvga3dBackSurfaceCopy;
7894	p->pfnSurfaceDMACopyBox = vmsvga3dBackSurfaceDMACopyBox;
7895	p->pfnSurfaceStretchBlt = vmsvga3dBackSurfaceStretchBlt;
7896	p->pfnUpdateHostScreenViewport = vmsvga3dBackUpdateHostScreenViewport;
7897	p->pfnDefineScreen = vmsvga3dBackDefineScreen;
7898	p->pfnDestroyScreen = vmsvga3dBackDestroyScreen;
7899	p->pfnSurfaceBlitToScreen = vmsvga3dBackSurfaceBlitToScreen;
7900	p->pfnSurfaceUpdateHeapBuffers = vmsvga3dBackSurfaceUpdateHeapBuffers;
7901	}
7902	}
7903	else
7904	{
7905	AssertFailed();
7906	rc = VERR_INVALID_PARAMETER;
7907	}
7908	}
7909	else if (RTStrCmp(pszInterfaceName, VMSVGA3D_BACKEND_INTERFACE_NAME_VGPU9) == 0)
7910	{
7911	if (cbInterfaceFuncs == sizeof(VMSVGA3DBACKENDFUNCSVGPU9))
7912	{
7913	if (pvInterfaceFuncs)
7914	{
7915	VMSVGA3DBACKENDFUNCSVGPU9 p = (VMSVGA3DBACKENDFUNCSVGPU9 )pvInterfaceFuncs;
7916	p->pfnContextDefine = vmsvga3dBackContextDefine;
7917	p->pfnContextDestroy = vmsvga3dBackContextDestroy;
7918	p->pfnSetTransform = vmsvga3dBackSetTransform;
7919	p->pfnSetZRange = vmsvga3dBackSetZRange;
7920	p->pfnSetRenderState = vmsvga3dBackSetRenderState;
7921	p->pfnSetRenderTarget = vmsvga3dBackSetRenderTarget;
7922	p->pfnSetTextureState = vmsvga3dBackSetTextureState;
7923	p->pfnSetMaterial = vmsvga3dBackSetMaterial;
7924	p->pfnSetLightData = vmsvga3dBackSetLightData;
7925	p->pfnSetLightEnabled = vmsvga3dBackSetLightEnabled;
7926	p->pfnSetViewPort = vmsvga3dBackSetViewPort;
7927	p->pfnSetClipPlane = vmsvga3dBackSetClipPlane;
7928	p->pfnCommandClear = vmsvga3dBackCommandClear;
7929	p->pfnDrawPrimitives = vmsvga3dBackDrawPrimitives;
7930	p->pfnSetScissorRect = vmsvga3dBackSetScissorRect;
7931	p->pfnGenerateMipmaps = vmsvga3dBackGenerateMipmaps;
7932	p->pfnShaderDefine = vmsvga3dBackShaderDefine;
7933	p->pfnShaderDestroy = vmsvga3dBackShaderDestroy;
7934	p->pfnShaderSet = vmsvga3dBackShaderSet;
7935	p->pfnShaderSetConst = vmsvga3dBackShaderSetConst;
7936	p->pfnOcclusionQueryCreate = vmsvga3dBackOcclusionQueryCreate;
7937	p->pfnOcclusionQueryDelete = vmsvga3dBackOcclusionQueryDelete;
7938	p->pfnOcclusionQueryBegin = vmsvga3dBackOcclusionQueryBegin;
7939	p->pfnOcclusionQueryEnd = vmsvga3dBackOcclusionQueryEnd;
7940	p->pfnOcclusionQueryGetData = vmsvga3dBackOcclusionQueryGetData;
7941	}
7942	}
7943	else
7944	{
7945	AssertFailed();
7946	rc = VERR_INVALID_PARAMETER;
7947	}
7948	}
7949	else
7950	rc = VERR_NOT_IMPLEMENTED;
7951	return rc;
7952	}
7953
7954
7955	extern VMSVGA3DBACKENDDESC const g_BackendLegacy =
7956	{
7957	"LEGACY",
7958	vmsvga3dBackQueryInterface
7959	};

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source: vbox/trunk/src/VBox/Devices/Graphics/DevVGA-SVGA3d-ogl.cpp@ 93956

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