DevVGA-SVGA3d-ogl.cpp@ 84909

Last change on this file since 84909 was 84888, checked in by vboxsync, 5 years ago
FE/Qt,Devices/Graphics: experimental GLX graphics output: use TEXTURE_2D
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1	/* $Id: DevVGA-SVGA3d-ogl.cpp 84888 2020-06-21 18:41:16Z vboxsync $ */
2	/** @file
3	* DevVMWare - VMWare SVGA device
4	*/
5
6	/*
7	* Copyright (C) 2013-2020 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	#include <VBox/vmm/pdmdev.h>
31	#include <VBox/version.h>
32	#include <VBox/err.h>
33	#include <VBox/log.h>
34	#include <VBox/vmm/pgm.h>
35	#include <VBox/AssertGuest.h>
36
37	#include <iprt/assert.h>
38	#include <iprt/semaphore.h>
39	#include <iprt/uuid.h>
40	#include <iprt/mem.h>
41
42	#include <VBoxVideo.h> /* required by DevVGA.h */
43	#include <VBoxVideo3D.h>
44
45	/* should go BEFORE any other DevVGA include to make all DevVGA.h config defines be visible */
46	#include "DevVGA.h"
47
48	#include "DevVGA-SVGA.h"
49	#include "DevVGA-SVGA3d.h"
50	#include "DevVGA-SVGA3d-internal.h"
51
52	#ifdef DUMP_SHADER_DISASSEMBLY
53	# include <d3dx9shader.h>
54	#endif
55
56	#include <stdlib.h>
57	#include <math.h>
58	#include <float.h> /* FLT_MIN */
59
60
61	/*********************************************************************************************************************************
62	* Defined Constants And Macros *
63	*********************************************************************************************************************************/
64	#ifndef VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE
65	# define VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE 1.0
66	#endif
67
68	#ifdef VMSVGA3D_DYNAMIC_LOAD
69	# define OGLGETPROCADDRESS glLdrGetProcAddress
70	#else
71	#ifdef RT_OS_WINDOWS
72	# define OGLGETPROCADDRESS MyWinGetProcAddress
73	DECLINLINE(PROC) MyWinGetProcAddress(const char *pszSymbol)
74	{
75	/* Khronos: [on failure] "some implementations will return other values. 1, 2, and 3 are used, as well as -1". */
76	PROC p = wglGetProcAddress(pszSymbol);
77	if (RT_VALID_PTR(p))
78	return p;
79	return 0;
80	}
81	#elif defined(RT_OS_DARWIN)
82	# include <dlfcn.h>
83	# define OGLGETPROCADDRESS MyNSGLGetProcAddress
84	/** Resolves an OpenGL symbol. */
85	static void MyNSGLGetProcAddress(const char pszSymbol)
86	{
87	/* Another copy in shaderapi.c. */
88	static void *s_pvImage = NULL;
89	if (s_pvImage == NULL)
90	s_pvImage = dlopen("/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL", RTLD_LAZY);
91	return s_pvImage ? dlsym(s_pvImage, pszSymbol) : NULL;
92	}
93
94	#else
95	# define OGLGETPROCADDRESS(x) glXGetProcAddress((const GLubyte *)x)
96	#endif
97	#endif
98
99	/* Invert y-coordinate for OpenGL's bottom left origin. */
100	#define D3D_TO_OGL_Y_COORD(ptrSurface, y_coordinate) (ptrSurface->paMipmapLevels[0].mipmapSize.height - (y_coordinate))
101	#define D3D_TO_OGL_Y_COORD_MIPLEVEL(ptrMipLevel, y_coordinate) (ptrMipLevel->size.height - (y_coordinate))
102
103	/**
104	* Macro for doing something and then checking for errors during initialization.
105	* Uses AssertLogRelMsg.
106	*/
107	#define VMSVGA3D_INIT_CHECKED(a_Expr) \
108	do \
109	{ \
110	a_Expr; \
111	GLenum iGlError = glGetError(); \
112	AssertLogRelMsg(iGlError == GL_NO_ERROR, ("VMSVGA3d: %s -> %#x\n", #a_Expr, iGlError)); \
113	} while (0)
114
115	/**
116	* Macro for doing something and then checking for errors during initialization,
117	* doing the same in the other context when enabled.
118	*
119	* This will try both profiles in dual profile builds. Caller must be in the
120	* default context.
121	*
122	* Uses AssertLogRelMsg to indicate trouble.
123	*/
124	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
125	# define VMSVGA3D_INIT_CHECKED_BOTH(a_pState, a_pContext, a_pOtherCtx, a_Expr) \
126	do \
127	{ \
128	for (uint32_t i = 0; i < 64; i++) if (glGetError() == GL_NO_ERROR) break; Assert(glGetError() == GL_NO_ERROR); \
129	a_Expr; \
130	GLenum iGlError = glGetError(); \
131	if (iGlError != GL_NO_ERROR) \
132	{ \
133	VMSVGA3D_SET_CURRENT_CONTEXT(a_pState, a_pOtherCtx); \
134	for (uint32_t i = 0; i < 64; i++) if (glGetError() == GL_NO_ERROR) break; Assert(glGetError() == GL_NO_ERROR); \
135	a_Expr; \
136	GLenum iGlError2 = glGetError(); \
137	AssertLogRelMsg(iGlError2 == GL_NO_ERROR, ("VMSVGA3d: %s -> %#x / %#x\n", #a_Expr, iGlError, iGlError2)); \
138	VMSVGA3D_SET_CURRENT_CONTEXT(a_pState, a_pContext); \
139	} \
140	} while (0)
141	#else
142	# define VMSVGA3D_INIT_CHECKED_BOTH(a_pState, a_pContext, a_pOtherCtx, a_Expr) VMSVGA3D_INIT_CHECKED(a_Expr)
143	#endif
144
145
146	/*********************************************************************************************************************************
147	* Global Variables *
148	*********************************************************************************************************************************/
149	/* Define the default light parameters as specified by MSDN. */
150	/** @todo move out; fetched from Wine */
151	const SVGA3dLightData vmsvga3d_default_light =
152	{
153	SVGA3D_LIGHTTYPE_DIRECTIONAL, /* type */
154	false, /* inWorldSpace */
155	{ 1.0f, 1.0f, 1.0f, 0.0f }, /* diffuse r,g,b,a */
156	{ 0.0f, 0.0f, 0.0f, 0.0f }, /* specular r,g,b,a */
157	{ 0.0f, 0.0f, 0.0f, 0.0f }, /* ambient r,g,b,a, */
158	{ 0.0f, 0.0f, 0.0f }, /* position x,y,z */
159	{ 0.0f, 0.0f, 1.0f }, /* direction x,y,z */
160	0.0f, /* range */
161	0.0f, /* falloff */
162	0.0f, 0.0f, 0.0f, /* attenuation 0,1,2 */
163	0.0f, /* theta */
164	0.0f /* phi */
165	};
166
167
168	/*********************************************************************************************************************************
169	* Internal Functions *
170	*********************************************************************************************************************************/
171	static int vmsvga3dContextDestroyOgl(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid);
172	static void vmsvgaColor2GLFloatArray(uint32_t color, GLfloat pRed, GLfloat pGreen, GLfloat pBlue, GLfloat pAlpha);
173
174	/* Generated by VBoxDef2LazyLoad from the VBoxSVGA3D.def and VBoxSVGA3DObjC.def files. */
175	extern "C" int ExplicitlyLoadVBoxSVGA3D(bool fResolveAllImports, PRTERRINFO pErrInfo);
176
177
178	/**
179	* Checks if the given OpenGL extension is supported.
180	*
181	* @returns true if supported, false if not.
182	* @param pState The VMSVGA3d state.
183	* @param rsMinGLVersion The OpenGL version that introduced this feature
184	* into the core.
185	* @param pszWantedExtension The name of the OpenGL extension we want padded
186	* with one space at each end.
187	* @remarks Init time only.
188	*/
189	static bool vmsvga3dCheckGLExtension(PVMSVGA3DSTATE pState, float rsMinGLVersion, const char *pszWantedExtension)
190	{
191	RT_NOREF(rsMinGLVersion);
192	/* check padding. */
193	Assert(pszWantedExtension[0] == ' ');
194	Assert(pszWantedExtension[1] != ' ');
195	Assert(strchr(&pszWantedExtension[1], ' ') + 1 == strchr(pszWantedExtension, '\0'));
196
197	/* Look it up. */
198	bool fRet = false;
199	if (strstr(pState->pszExtensions, pszWantedExtension))
200	fRet = true;
201
202	/* Temporarily. Later start if (rsMinGLVersion != 0.0 && fActualGLVersion >= rsMinGLVersion) return true; */
203	#ifdef RT_OS_DARWIN
204	AssertMsg( rsMinGLVersion == 0.0
205	\|\| fRet == (pState->rsGLVersion >= rsMinGLVersion)
206	\|\| VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE == 2.1,
207	("%s actual:%d min:%d fRet=%d\n",
208	pszWantedExtension, (int)(pState->rsGLVersion * 10), (int)(rsMinGLVersion * 10), fRet));
209	#else
210	AssertMsg(rsMinGLVersion == 0.0 \|\| fRet == (pState->rsGLVersion >= rsMinGLVersion),
211	("%s actual:%d min:%d fRet=%d\n",
212	pszWantedExtension, (int)(pState->rsGLVersion * 10), (int)(rsMinGLVersion * 10), fRet));
213	#endif
214	return fRet;
215	}
216
217
218	/**
219	* Outputs GL_EXTENSIONS list to the release log.
220	*/
221	static void vmsvga3dLogRelExtensions(const char pszPrefix, const char pszExtensions)
222	{
223	/* OpenGL 3.0 interface (glGetString(GL_EXTENSIONS) return NULL). */
224	bool fBuffered = RTLogRelSetBuffering(true);
225
226	/*
227	* Determin the column widths first.
228	*/
229	size_t acchWidths[4] = { 1, 1, 1, 1 };
230	uint32_t i;
231	const char *psz = pszExtensions;
232	for (i = 0; ; i++)
233	{
234	while (*psz == ' ')
235	psz++;
236	if (!*psz)
237	break;
238
239	const char *pszEnd = strchr(psz, ' ');
240	AssertBreak(pszEnd);
241	size_t cch = pszEnd - psz;
242
243	uint32_t iColumn = i % RT_ELEMENTS(acchWidths);
244	if (acchWidths[iColumn] < cch)
245	acchWidths[iColumn] = cch;
246
247	psz = pszEnd;
248	}
249
250	/*
251	* Output it.
252	*/
253	LogRel(("VMSVGA3d: %sOpenGL extensions (%d):", pszPrefix, i));
254	psz = pszExtensions;
255	for (i = 0; ; i++)
256	{
257	while (*psz == ' ')
258	psz++;
259	if (!*psz)
260	break;
261
262	const char *pszEnd = strchr(psz, ' ');
263	AssertBreak(pszEnd);
264	size_t cch = pszEnd - psz;
265
266	uint32_t iColumn = i % RT_ELEMENTS(acchWidths);
267	if (iColumn == 0)
268	LogRel(("\nVMSVGA3d: %-.s", acchWidths[iColumn], cch, psz));
269	else if (iColumn != RT_ELEMENTS(acchWidths) - 1)
270	LogRel((" %-.s", acchWidths[iColumn], cch, psz));
271	else
272	LogRel((" %.*s", cch, psz));
273
274	psz = pszEnd;
275	}
276
277	RTLogRelSetBuffering(fBuffered);
278	LogRel(("\n"));
279	}
280
281	/**
282	* Gathers the GL_EXTENSIONS list, storing it as a space padded list at
283	* @a ppszExtensions.
284	*
285	* @returns VINF_SUCCESS or VERR_NO_STR_MEMORY
286	* @param ppszExtensions Pointer to the string pointer. Free with RTStrFree.
287	* @param fGLProfileVersion The OpenGL profile version.
288	*/
289	static int vmsvga3dGatherExtensions(char **ppszExtensions, float fGLProfileVersion)
290	{
291	int rc;
292	*ppszExtensions = NULL;
293
294	/*
295	* Try the old glGetString interface first.
296	*/
297	const char pszExtensions = (const char )glGetString(GL_EXTENSIONS);
298	if (pszExtensions)
299	{
300	rc = RTStrAAppendExN(ppszExtensions, 3, " ", (size_t)1, pszExtensions, RTSTR_MAX, " ", (size_t)1);
301	AssertLogRelRCReturn(rc, rc);
302	}
303	else
304	{
305	/*
306	* The new interface where each extension string is retrieved separately.
307	* Note! Cannot use VMSVGA3D_INIT_CHECKED_GL_GET_INTEGER_VALUE here because
308	* the above GL_EXTENSIONS error lingers on darwin. sucks.
309	*/
310	#ifndef GL_NUM_EXTENSIONS
311	# define GL_NUM_EXTENSIONS 0x821D
312	#endif
313	GLint cExtensions = 1024;
314	glGetIntegerv(GL_NUM_EXTENSIONS, &cExtensions);
315	Assert(cExtensions != 1024);
316
317	PFNGLGETSTRINGIPROC pfnGlGetStringi = (PFNGLGETSTRINGIPROC)OGLGETPROCADDRESS("glGetStringi");
318	AssertLogRelReturn(pfnGlGetStringi, VERR_NOT_SUPPORTED);
319
320	rc = RTStrAAppend(ppszExtensions, " ");
321	for (GLint i = 0; RT_SUCCESS(rc) && i < cExtensions; i++)
322	{
323	const char pszExt = (const char )pfnGlGetStringi(GL_EXTENSIONS, i);
324	if (pszExt)
325	rc = RTStrAAppendExN(ppszExtensions, 2, pfnGlGetStringi(GL_EXTENSIONS, i), RTSTR_MAX, " ", (size_t)1);
326	}
327	AssertRCReturn(rc, rc);
328	}
329
330	#if 1
331	/*
332	* Add extensions promoted into the core OpenGL profile.
333	*/
334	static const struct
335	{
336	float fGLVersion;
337	const char *pszzExtensions;
338	} s_aPromotedExtensions[] =
339	{
340	{
341	1.1f,
342	" GL_EXT_vertex_array \0"
343	" GL_EXT_polygon_offset \0"
344	" GL_EXT_blend_logic_op \0"
345	" GL_EXT_texture \0"
346	" GL_EXT_copy_texture \0"
347	" GL_EXT_subtexture \0"
348	" GL_EXT_texture_object \0"
349	" GL_ARB_framebuffer_object \0"
350	" GL_ARB_map_buffer_range \0"
351	" GL_ARB_vertex_array_object \0"
352	"\0"
353	},
354	{
355	1.2f,
356	" EXT_texture3D \0"
357	" EXT_bgra \0"
358	" EXT_packed_pixels \0"
359	" EXT_rescale_normal \0"
360	" EXT_separate_specular_color \0"
361	" SGIS_texture_edge_clamp \0"
362	" SGIS_texture_lod \0"
363	" EXT_draw_range_elements \0"
364	"\0"
365	},
366	{
367	1.3f,
368	" GL_ARB_texture_compression \0"
369	" GL_ARB_texture_cube_map \0"
370	" GL_ARB_multisample \0"
371	" GL_ARB_multitexture \0"
372	" GL_ARB_texture_env_add \0"
373	" GL_ARB_texture_env_combine \0"
374	" GL_ARB_texture_env_dot3 \0"
375	" GL_ARB_texture_border_clamp \0"
376	" GL_ARB_transpose_matrix \0"
377	"\0"
378	},
379	{
380	1.5f,
381	" GL_SGIS_generate_mipmap \0"
382	/" GL_NV_blend_equare \0"/
383	" GL_ARB_depth_texture \0"
384	" GL_ARB_shadow \0"
385	" GL_EXT_fog_coord \0"
386	" GL_EXT_multi_draw_arrays \0"
387	" GL_ARB_point_parameters \0"
388	" GL_EXT_secondary_color \0"
389	" GL_EXT_blend_func_separate \0"
390	" GL_EXT_stencil_wrap \0"
391	" GL_ARB_texture_env_crossbar \0"
392	" GL_EXT_texture_lod_bias \0"
393	" GL_ARB_texture_mirrored_repeat \0"
394	" GL_ARB_window_pos \0"
395	"\0"
396	},
397	{
398	1.6f,
399	" GL_ARB_vertex_buffer_object \0"
400	" GL_ARB_occlusion_query \0"
401	" GL_EXT_shadow_funcs \0"
402	},
403	{
404	2.0f,
405	" GL_ARB_shader_objects \0" /??/
406	" GL_ARB_vertex_shader \0" /??/
407	" GL_ARB_fragment_shader \0" /??/
408	" GL_ARB_shading_language_100 \0" /??/
409	" GL_ARB_draw_buffers \0"
410	" GL_ARB_texture_non_power_of_two \0"
411	" GL_ARB_point_sprite \0"
412	" GL_ATI_separate_stencil \0"
413	" GL_EXT_stencil_two_side \0"
414	"\0"
415	},
416	{
417	2.1f,
418	" GL_ARB_pixel_buffer_object \0"
419	" GL_EXT_texture_sRGB \0"
420	"\0"
421	},
422	{
423	3.0f,
424	" GL_ARB_framebuffer_object \0"
425	" GL_ARB_map_buffer_range \0"
426	" GL_ARB_vertex_array_object \0"
427	"\0"
428	},
429	{
430	3.1f,
431	" GL_ARB_copy_buffer \0"
432	" GL_ARB_uniform_buffer_object \0"
433	"\0"
434	},
435	{
436	3.2f,
437	" GL_ARB_vertex_array_bgra \0"
438	" GL_ARB_draw_elements_base_vertex \0"
439	" GL_ARB_fragment_coord_conventions \0"
440	" GL_ARB_provoking_vertex \0"
441	" GL_ARB_seamless_cube_map \0"
442	" GL_ARB_texture_multisample \0"
443	" GL_ARB_depth_clamp \0"
444	" GL_ARB_sync \0"
445	" GL_ARB_geometry_shader4 \0" /??/
446	"\0"
447	},
448	{
449	3.3f,
450	" GL_ARB_blend_func_extended \0"
451	" GL_ARB_sampler_objects \0"
452	" GL_ARB_explicit_attrib_location \0"
453	" GL_ARB_occlusion_query2 \0"
454	" GL_ARB_shader_bit_encoding \0"
455	" GL_ARB_texture_rgb10_a2ui \0"
456	" GL_ARB_texture_swizzle \0"
457	" GL_ARB_timer_query \0"
458	" GL_ARB_vertex_type_2_10_10_10_rev \0"
459	"\0"
460	},
461	{
462	4.0f,
463	" GL_ARB_texture_query_lod \0"
464	" GL_ARB_draw_indirect \0"
465	" GL_ARB_gpu_shader5 \0"
466	" GL_ARB_gpu_shader_fp64 \0"
467	" GL_ARB_shader_subroutine \0"
468	" GL_ARB_tessellation_shader \0"
469	" GL_ARB_texture_buffer_object_rgb32 \0"
470	" GL_ARB_texture_cube_map_array \0"
471	" GL_ARB_texture_gather \0"
472	" GL_ARB_transform_feedback2 \0"
473	" GL_ARB_transform_feedback3 \0"
474	"\0"
475	},
476	{
477	4.1f,
478	" GL_ARB_ES2_compatibility \0"
479	" GL_ARB_get_program_binary \0"
480	" GL_ARB_separate_shader_objects \0"
481	" GL_ARB_shader_precision \0"
482	" GL_ARB_vertex_attrib_64bit \0"
483	" GL_ARB_viewport_array \0"
484	"\0"
485	}
486	};
487
488	uint32_t cPromoted = 0;
489	for (uint32_t i = 0; i < RT_ELEMENTS(s_aPromotedExtensions) && s_aPromotedExtensions[i].fGLVersion <= fGLProfileVersion; i++)
490	{
491	const char *pszExt = s_aPromotedExtensions[i].pszzExtensions;
492	while (*pszExt)
493	{
494	# ifdef VBOX_STRICT
495	size_t cchExt = strlen(pszExt);
496	Assert(cchExt > 3);
497	Assert(pszExt[0] == ' ');
498	Assert(pszExt[1] != ' ');
499	Assert(pszExt[cchExt - 2] != ' ');
500	Assert(pszExt[cchExt - 1] == ' ');
501	# endif
502
503	if (strstr(*ppszExtensions, pszExt) == NULL)
504	{
505	if (cPromoted++ == 0)
506	{
507	rc = RTStrAAppend(ppszExtensions, " <promoted-extensions:> <promoted-extensions:> <promoted-extensions:> ");
508	AssertRCReturn(rc, rc);
509	}
510
511	rc = RTStrAAppend(ppszExtensions, pszExt);
512	AssertRCReturn(rc, rc);
513	}
514
515	pszExt = strchr(pszExt, '\0') + 1;
516	}
517	}
518	#endif
519
520	return VINF_SUCCESS;
521	}
522
523	/** Check whether this is an Intel GL driver.
524	*
525	* @returns true if this seems to be some Intel graphics.
526	*/
527	static bool vmsvga3dIsVendorIntel(void)
528	{
529	return RTStrNICmp((char *)glGetString(GL_VENDOR), "Intel", 5) == 0;
530	}
531
532	/**
533	* @interface_method_impl{VBOXVMSVGASHADERIF,pfnSwitchInitProfile}
534	*/
535	static DECLCALLBACK(void) vmsvga3dShaderIfSwitchInitProfile(PVBOXVMSVGASHADERIF pThis, bool fOtherProfile)
536	{
537	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
538	PVMSVGA3DSTATE pState = RT_FROM_MEMBER(pThis, VMSVGA3DSTATE, ShaderIf);
539	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pState->papContexts[fOtherProfile ? 2 : 1]);
540	#else
541	NOREF(pThis);
542	NOREF(fOtherProfile);
543	#endif
544	}
545
546
547	/**
548	* @interface_method_impl{VBOXVMSVGASHADERIF,pfnGetNextExtension}
549	*/
550	static DECLCALLBACK(bool) vmsvga3dShaderIfGetNextExtension(PVBOXVMSVGASHADERIF pThis, void **ppvEnumCtx,
551	char *pszBuf, size_t cbBuf, bool fOtherProfile)
552	{
553	PVMSVGA3DSTATE pState = RT_FROM_MEMBER(pThis, VMSVGA3DSTATE, ShaderIf);
554	const char pszCur = ppvEnumCtx ? (const char )ppvEnumCtx
555	: fOtherProfile ? pState->pszOtherExtensions : pState->pszExtensions;
556	while (*pszCur == ' ')
557	pszCur++;
558	if (!*pszCur)
559	return false;
560
561	const char *pszEnd = strchr(pszCur, ' ');
562	AssertReturn(pszEnd, false);
563	size_t cch = pszEnd - pszCur;
564	if (cch < cbBuf)
565	{
566	memcpy(pszBuf, pszCur, cch);
567	pszBuf[cch] = '\0';
568	}
569	else if (cbBuf > 0)
570	{
571	memcpy(pszBuf, "<overflow>", RT_MIN(sizeof("<overflow>"), cbBuf));
572	pszBuf[cbBuf - 1] = '\0';
573	}
574
575	ppvEnumCtx = (void )pszEnd;
576	return true;
577	}
578
579
580	/**
581	* Initializes the VMSVGA3D state during VGA device construction.
582	*
583	* Failure are generally not fatal, 3D support will just be disabled.
584	*
585	* @returns VBox status code.
586	* @param pDevIns The device instance.
587	* @param pThis The shared VGA/VMSVGA state where svga.p3dState will be
588	* modified.
589	* @param pThisCC The VGA/VMSVGA state for ring-3.
590	*/
591	int vmsvga3dInit(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC)
592	{
593	int rc;
594	RT_NOREF(pDevIns, pThis);
595
596	AssertCompile(GL_TRUE == 1);
597	AssertCompile(GL_FALSE == 0);
598
599	#ifdef VMSVGA3D_DYNAMIC_LOAD
600	rc = glLdrInit(pDevIns);
601	if (RT_FAILURE(rc))
602	{
603	LogRel(("VMSVGA3d: Error loading OpenGL library and resolving necessary functions: %Rrc\n", rc));
604	return rc;
605	}
606	#endif
607
608	/*
609	* Load and resolve imports from the external shared libraries.
610	*/
611	RTERRINFOSTATIC ErrInfo;
612	rc = ExplicitlyLoadVBoxSVGA3D(true /fResolveAllImports/, RTErrInfoInitStatic(&ErrInfo));
613	if (RT_FAILURE(rc))
614	{
615	LogRel(("VMSVGA3d: Error loading VBoxSVGA3D and resolving necessary functions: %Rrc - %s\n", rc, ErrInfo.Core.pszMsg));
616	return rc;
617	}
618	#ifdef RT_OS_DARWIN
619	rc = ExplicitlyLoadVBoxSVGA3DObjC(true /fResolveAllImports/, RTErrInfoInitStatic(&ErrInfo));
620	if (RT_FAILURE(rc))
621	{
622	LogRel(("VMSVGA3d: Error loading VBoxSVGA3DObjC and resolving necessary functions: %Rrc - %s\n", rc, ErrInfo.Core.pszMsg));
623	return rc;
624	}
625	#endif
626
627	/*
628	* Allocate the state.
629	*/
630	pThisCC->svga.p3dState = (PVMSVGA3DSTATE)RTMemAllocZ(sizeof(VMSVGA3DSTATE));
631	AssertReturn(pThisCC->svga.p3dState, VERR_NO_MEMORY);
632
633	#ifdef RT_OS_WINDOWS
634	/* Create event semaphore and async IO thread. */
635	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
636	rc = RTSemEventCreate(&pState->WndRequestSem);
637	if (RT_SUCCESS(rc))
638	{
639	rc = RTThreadCreate(&pState->pWindowThread, vmsvga3dWindowThread, pState->WndRequestSem, 0, RTTHREADTYPE_GUI, 0,
640	"VMSVGA3DWND");
641	if (RT_SUCCESS(rc))
642	return VINF_SUCCESS;
643
644	/* bail out. */
645	LogRel(("VMSVGA3d: RTThreadCreate failed: %Rrc\n", rc));
646	RTSemEventDestroy(pState->WndRequestSem);
647	}
648	else
649	LogRel(("VMSVGA3d: RTSemEventCreate failed: %Rrc\n", rc));
650	RTMemFree(pThisCC->svga.p3dState);
651	pThisCC->svga.p3dState = NULL;
652	return rc;
653	#else
654	return VINF_SUCCESS;
655	#endif
656	}
657
658	static int vmsvga3dLoadGLFunctions(PVMSVGA3DSTATE pState)
659	{
660	/* A strict approach to get a proc address as recommended by Khronos:
661	* - "If the function is a core OpenGL function, then we need to check the OpenGL version".
662	* - "If the function is an extension, we need to check to see if the extension is supported."
663	*/
664
665	/* Get a function address, return VERR_NOT_IMPLEMENTED on failure. */
666	#define GLGETPROC_(ProcType, ProcName, NameSuffix) do { \
667	pState->ext.ProcName = (ProcType)OGLGETPROCADDRESS(#ProcName NameSuffix); \
668	AssertLogRelMsgReturn(pState->ext.ProcName, (#ProcName NameSuffix " missing"), VERR_NOT_IMPLEMENTED); \
669	} while(0)
670
671	/* Get an optional function address. LogRel on failure. */
672	#define GLGETPROCOPT_(ProcType, ProcName, NameSuffix) do { \
673	pState->ext.ProcName = (ProcType)OGLGETPROCADDRESS(#ProcName NameSuffix); \
674	if (!pState->ext.ProcName) \
675	{ \
676	LogRel(("VMSVGA3d: missing optional %s\n", #ProcName NameSuffix)); \
677	AssertFailed(); \
678	} \
679	} while(0)
680
681	/* OpenGL 2.0 or earlier core. Do not bother with extensions. */
682	GLGETPROC_(PFNGLGENQUERIESPROC , glGenQueries, "");
683	GLGETPROC_(PFNGLDELETEQUERIESPROC , glDeleteQueries, "");
684	GLGETPROC_(PFNGLBEGINQUERYPROC , glBeginQuery, "");
685	GLGETPROC_(PFNGLENDQUERYPROC , glEndQuery, "");
686	GLGETPROC_(PFNGLGETQUERYOBJECTUIVPROC , glGetQueryObjectuiv, "");
687	GLGETPROC_(PFNGLTEXIMAGE3DPROC , glTexImage3D, "");
688	GLGETPROC_(PFNGLTEXSUBIMAGE3DPROC , glTexSubImage3D, "");
689	GLGETPROC_(PFNGLGETCOMPRESSEDTEXIMAGEPROC , glGetCompressedTexImage, "");
690	GLGETPROC_(PFNGLCOMPRESSEDTEXIMAGE2DPROC , glCompressedTexImage2D, "");
691	GLGETPROC_(PFNGLCOMPRESSEDTEXIMAGE3DPROC , glCompressedTexImage3D, "");
692	GLGETPROC_(PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC , glCompressedTexSubImage2D, "");
693	GLGETPROC_(PFNGLCOMPRESSEDTEXSUBIMAGE3DPROC , glCompressedTexSubImage3D, "");
694	GLGETPROC_(PFNGLPOINTPARAMETERFPROC , glPointParameterf, "");
695	GLGETPROC_(PFNGLBLENDEQUATIONSEPARATEPROC , glBlendEquationSeparate, "");
696	GLGETPROC_(PFNGLBLENDFUNCSEPARATEPROC , glBlendFuncSeparate, "");
697	GLGETPROC_(PFNGLSTENCILOPSEPARATEPROC , glStencilOpSeparate, "");
698	GLGETPROC_(PFNGLSTENCILFUNCSEPARATEPROC , glStencilFuncSeparate, "");
699	GLGETPROC_(PFNGLBINDBUFFERPROC , glBindBuffer, "");
700	GLGETPROC_(PFNGLDELETEBUFFERSPROC , glDeleteBuffers, "");
701	GLGETPROC_(PFNGLGENBUFFERSPROC , glGenBuffers, "");
702	GLGETPROC_(PFNGLBUFFERDATAPROC , glBufferData, "");
703	GLGETPROC_(PFNGLMAPBUFFERPROC , glMapBuffer, "");
704	GLGETPROC_(PFNGLUNMAPBUFFERPROC , glUnmapBuffer, "");
705	GLGETPROC_(PFNGLENABLEVERTEXATTRIBARRAYPROC , glEnableVertexAttribArray, "");
706	GLGETPROC_(PFNGLDISABLEVERTEXATTRIBARRAYPROC , glDisableVertexAttribArray, "");
707	GLGETPROC_(PFNGLVERTEXATTRIBPOINTERPROC , glVertexAttribPointer, "");
708	GLGETPROC_(PFNGLACTIVETEXTUREPROC , glActiveTexture, "");
709	/* glGetProgramivARB determines implementation limits for the program
710	* target (GL_FRAGMENT_PROGRAM_ARB, GL_VERTEX_PROGRAM_ARB).
711	* It differs from glGetProgramiv, which returns a parameter from a program object.
712	*/
713	GLGETPROC_(PFNGLGETPROGRAMIVARBPROC , glGetProgramivARB, "");
714	GLGETPROC_(PFNGLFOGCOORDPOINTERPROC , glFogCoordPointer, "");
715	#if VBOX_VMSVGA3D_GL_HACK_LEVEL < 0x102
716	GLGETPROC_(PFNGLBLENDCOLORPROC , glBlendColor, "");
717	GLGETPROC_(PFNGLBLENDEQUATIONPROC , glBlendEquation, "");
718	#endif
719	#if VBOX_VMSVGA3D_GL_HACK_LEVEL < 0x103
720	GLGETPROC_(PFNGLCLIENTACTIVETEXTUREPROC , glClientActiveTexture, "");
721	#endif
722	GLGETPROC_(PFNGLDRAWBUFFERSPROC , glDrawBuffers, "");
723	GLGETPROC_(PFNGLCREATESHADERPROC , glCreateShader, "");
724	GLGETPROC_(PFNGLSHADERSOURCEPROC , glShaderSource, "");
725	GLGETPROC_(PFNGLCOMPILESHADERPROC , glCompileShader, "");
726	GLGETPROC_(PFNGLGETSHADERIVPROC , glGetShaderiv, "");
727	GLGETPROC_(PFNGLGETSHADERINFOLOGPROC , glGetShaderInfoLog, "");
728	GLGETPROC_(PFNGLCREATEPROGRAMPROC , glCreateProgram, "");
729	GLGETPROC_(PFNGLATTACHSHADERPROC , glAttachShader, "");
730	GLGETPROC_(PFNGLLINKPROGRAMPROC , glLinkProgram, "");
731	GLGETPROC_(PFNGLGETPROGRAMIVPROC , glGetProgramiv, "");
732	GLGETPROC_(PFNGLGETPROGRAMINFOLOGPROC , glGetProgramInfoLog, "");
733	GLGETPROC_(PFNGLUSEPROGRAMPROC , glUseProgram, "");
734	GLGETPROC_(PFNGLGETUNIFORMLOCATIONPROC , glGetUniformLocation, "");
735	GLGETPROC_(PFNGLUNIFORM1IPROC , glUniform1i, "");
736	GLGETPROC_(PFNGLUNIFORM4FVPROC , glUniform4fv, "");
737	GLGETPROC_(PFNGLDETACHSHADERPROC , glDetachShader, "");
738	GLGETPROC_(PFNGLDELETESHADERPROC , glDeleteShader, "");
739	GLGETPROC_(PFNGLDELETEPROGRAMPROC , glDeleteProgram, "");
740
741	GLGETPROC_(PFNGLVERTEXATTRIB4FVPROC , glVertexAttrib4fv, "");
742	GLGETPROC_(PFNGLVERTEXATTRIB4UBVPROC , glVertexAttrib4ubv, "");
743	GLGETPROC_(PFNGLVERTEXATTRIB4NUBVPROC , glVertexAttrib4Nubv, "");
744	GLGETPROC_(PFNGLVERTEXATTRIB4SVPROC , glVertexAttrib4sv, "");
745	GLGETPROC_(PFNGLVERTEXATTRIB4NSVPROC , glVertexAttrib4Nsv, "");
746	GLGETPROC_(PFNGLVERTEXATTRIB4NUSVPROC , glVertexAttrib4Nusv, "");
747
748	/* OpenGL 3.0 core, GL_ARB_instanced_arrays. Same functions names in the ARB and core specs. */
749	if ( pState->rsGLVersion >= 3.0f
750	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_framebuffer_object "))
751	{
752	GLGETPROC_(PFNGLISRENDERBUFFERPROC , glIsRenderbuffer, "");
753	GLGETPROC_(PFNGLBINDRENDERBUFFERPROC , glBindRenderbuffer, "");
754	GLGETPROC_(PFNGLDELETERENDERBUFFERSPROC , glDeleteRenderbuffers, "");
755	GLGETPROC_(PFNGLGENRENDERBUFFERSPROC , glGenRenderbuffers, "");
756	GLGETPROC_(PFNGLRENDERBUFFERSTORAGEPROC , glRenderbufferStorage, "");
757	GLGETPROC_(PFNGLGETRENDERBUFFERPARAMETERIVPROC , glGetRenderbufferParameteriv, "");
758	GLGETPROC_(PFNGLISFRAMEBUFFERPROC , glIsFramebuffer, "");
759	GLGETPROC_(PFNGLBINDFRAMEBUFFERPROC , glBindFramebuffer, "");
760	GLGETPROC_(PFNGLDELETEFRAMEBUFFERSPROC , glDeleteFramebuffers, "");
761	GLGETPROC_(PFNGLGENFRAMEBUFFERSPROC , glGenFramebuffers, "");
762	GLGETPROC_(PFNGLCHECKFRAMEBUFFERSTATUSPROC , glCheckFramebufferStatus, "");
763	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE1DPROC , glFramebufferTexture1D, "");
764	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE2DPROC , glFramebufferTexture2D, "");
765	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE3DPROC , glFramebufferTexture3D, "");
766	GLGETPROC_(PFNGLFRAMEBUFFERRENDERBUFFERPROC , glFramebufferRenderbuffer, "");
767	GLGETPROC_(PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC , glGetFramebufferAttachmentParameteriv, "");
768	GLGETPROC_(PFNGLGENERATEMIPMAPPROC , glGenerateMipmap, "");
769	GLGETPROC_(PFNGLBLITFRAMEBUFFERPROC , glBlitFramebuffer, "");
770	GLGETPROC_(PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC , glRenderbufferStorageMultisample, "");
771	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURELAYERPROC , glFramebufferTextureLayer, "");
772	}
773
774	/* OpenGL 3.1 core, GL_ARB_draw_instanced, GL_EXT_draw_instanced. */
775	if (pState->rsGLVersion >= 3.1f)
776	{
777	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "");
778	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "");
779	}
780	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_draw_instanced "))
781	{
782	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "ARB");
783	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "ARB");
784	}
785	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_draw_instanced "))
786	{
787	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "EXT");
788	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "EXT");
789	}
790
791	/* OpenGL 3.2 core, GL_ARB_draw_elements_base_vertex. Same functions names in the ARB and core specs. */
792	if ( pState->rsGLVersion >= 3.2f
793	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_draw_elements_base_vertex "))
794	{
795	GLGETPROC_(PFNGLDRAWELEMENTSBASEVERTEXPROC , glDrawElementsBaseVertex, "");
796	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC , glDrawElementsInstancedBaseVertex, "");
797	}
798
799	/* Optional. OpenGL 3.2 core, GL_ARB_provoking_vertex. Same functions names in the ARB and core specs. */
800	if ( pState->rsGLVersion >= 3.2f
801	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_provoking_vertex "))
802	{
803	GLGETPROCOPT_(PFNGLPROVOKINGVERTEXPROC , glProvokingVertex, "");
804	}
805
806	/* OpenGL 3.3 core, GL_ARB_instanced_arrays. */
807	if (pState->rsGLVersion >= 3.3f)
808	{
809	GLGETPROC_(PFNGLVERTEXATTRIBDIVISORPROC , glVertexAttribDivisor, "");
810	}
811	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_instanced_arrays "))
812	{
813	GLGETPROC_(PFNGLVERTEXATTRIBDIVISORARBPROC , glVertexAttribDivisor, "ARB");
814	}
815
816	#undef GLGETPROCOPT_
817	#undef GLGETPROC_
818
819	return VINF_SUCCESS;
820	}
821
822
823	/* We must delay window creation until the PowerOn phase. Init is too early and will cause failures. */
824	int vmsvga3dPowerOn(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC)
825	{
826	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
827	AssertReturn(pThisCC->svga.p3dState, VERR_NO_MEMORY);
828	PVMSVGA3DCONTEXT pContext;
829	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
830	PVMSVGA3DCONTEXT pOtherCtx;
831	#endif
832	int rc;
833	RT_NOREF(pDevIns, pThis);
834
835	if (pState->rsGLVersion != 0.0)
836	return VINF_SUCCESS; /* already initialized (load state) */
837
838	/*
839	* OpenGL function calls aren't possible without a valid current context, so create a fake one here.
840	*/
841	rc = vmsvga3dContextDefineOgl(pThisCC, 1, VMSVGA3D_DEF_CTX_F_INIT);
842	AssertRCReturn(rc, rc);
843
844	pContext = pState->papContexts[1];
845	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
846
847	#ifdef VMSVGA3D_DYNAMIC_LOAD
848	/* Context is set and it is possible now to resolve extension functions. */
849	rc = glLdrGetExtFunctions(pDevIns);
850	if (RT_FAILURE(rc))
851	{
852	LogRel(("VMSVGA3d: Error resolving extension functions: %Rrc\n", rc));
853	return rc;
854	}
855	#endif
856
857	LogRel(("VMSVGA3d: OpenGL version: %s\n"
858	"VMSVGA3d: OpenGL Vendor: %s\n"
859	"VMSVGA3d: OpenGL Renderer: %s\n"
860	"VMSVGA3d: OpenGL shader language version: %s\n",
861	glGetString(GL_VERSION), glGetString(GL_VENDOR), glGetString(GL_RENDERER),
862	glGetString(GL_SHADING_LANGUAGE_VERSION)));
863
864	rc = vmsvga3dGatherExtensions(&pState->pszExtensions, VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE);
865	AssertRCReturn(rc, rc);
866	vmsvga3dLogRelExtensions("", pState->pszExtensions);
867
868	pState->rsGLVersion = atof((const char *)glGetString(GL_VERSION));
869
870
871	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
872	/*
873	* Get the extension list for the alternative profile so we can better
874	* figure out the shader model and stuff.
875	*/
876	rc = vmsvga3dContextDefineOgl(pThisCC, 2, VMSVGA3D_DEF_CTX_F_INIT \| VMSVGA3D_DEF_CTX_F_OTHER_PROFILE);
877	AssertLogRelRCReturn(rc, rc);
878	pContext = pState->papContexts[1]; /* Array may have been reallocated. */
879
880	pOtherCtx = pState->papContexts[2];
881	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
882
883	LogRel(("VMSVGA3d: Alternative OpenGL version: %s\n"
884	"VMSVGA3d: Alternative OpenGL Vendor: %s\n"
885	"VMSVGA3d: Alternative OpenGL Renderer: %s\n"
886	"VMSVGA3d: Alternative OpenGL shader language version: %s\n",
887	glGetString(GL_VERSION), glGetString(GL_VENDOR), glGetString(GL_RENDERER),
888	glGetString(GL_SHADING_LANGUAGE_VERSION)));
889
890	rc = vmsvga3dGatherExtensions(&pState->pszOtherExtensions, VBOX_VMSVGA3D_OTHER_OGL_PROFILE);
891	AssertRCReturn(rc, rc);
892	vmsvga3dLogRelExtensions("Alternative ", pState->pszOtherExtensions);
893
894	pState->rsOtherGLVersion = atof((const char *)glGetString(GL_VERSION));
895
896	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
897	#else
898	pState->pszOtherExtensions = (char *)"";
899	pState->rsOtherGLVersion = pState->rsGLVersion;
900	#endif
901
902	/*
903	* Resolve GL function pointers and store them in pState->ext.
904	*/
905	rc = vmsvga3dLoadGLFunctions(pState);
906	if (RT_FAILURE(rc))
907	{
908	LogRel(("VMSVGA3d: missing required OpenGL function or extension; aborting\n"));
909	return rc;
910	}
911
912	/*
913	* Initialize the capabilities with sensible defaults.
914	*/
915	pState->caps.maxActiveLights = 1;
916	pState->caps.maxTextures = 1;
917	pState->caps.maxClipDistances = 4;
918	pState->caps.maxColorAttachments = 1;
919	pState->caps.maxRectangleTextureSize = 2048;
920	pState->caps.maxTextureAnisotropy = 1;
921	pState->caps.maxVertexShaderInstructions = 1024;
922	pState->caps.maxFragmentShaderInstructions = 1024;
923	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_NONE;
924	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_NONE;
925	pState->caps.flPointSize[0] = 1;
926	pState->caps.flPointSize[1] = 1;
927
928	/*
929	* Query capabilities
930	*/
931	pState->caps.fS3TCSupported = vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_texture_compression_s3tc ");
932	pState->caps.fTextureFilterAnisotropicSupported = vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_texture_filter_anisotropic ");
933
934	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetIntegerv(GL_MAX_LIGHTS, &pState->caps.maxActiveLights));
935	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &pState->caps.maxTextures));
936	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE /* The alternative profile has a higher number here (ati/darwin). */
937	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
938	VMSVGA3D_INIT_CHECKED_BOTH(pState, pOtherCtx, pContext, glGetIntegerv(GL_MAX_CLIP_DISTANCES, &pState->caps.maxClipDistances));
939	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
940	#else
941	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_CLIP_DISTANCES, &pState->caps.maxClipDistances));
942	#endif
943	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS, &pState->caps.maxColorAttachments));
944	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_RECTANGLE_TEXTURE_SIZE, &pState->caps.maxRectangleTextureSize));
945	if (pState->caps.fTextureFilterAnisotropicSupported)
946	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &pState->caps.maxTextureAnisotropy));
947	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, pState->caps.flPointSize));
948
949	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
950	pState->ext.glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB,
951	&pState->caps.maxFragmentShaderTemps));
952	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
953	pState->ext.glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB,
954	&pState->caps.maxFragmentShaderInstructions));
955	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
956	pState->ext.glGetProgramivARB(GL_VERTEX_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB,
957	&pState->caps.maxVertexShaderTemps));
958	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
959	pState->ext.glGetProgramivARB(GL_VERTEX_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB,
960	&pState->caps.maxVertexShaderInstructions));
961
962	/* http://http://www.opengl.org/wiki/Detecting_the_Shader_Model
963	* ARB Assembly Language
964	* These are done through testing the presence of extensions. You should test them in this order:
965	* GL_NV_gpu_program4: SM 4.0 or better.
966	* GL_NV_vertex_program3: SM 3.0 or better.
967	* GL_ARB_fragment_program: SM 2.0 or better.
968	* ATI does not support higher than SM 2.0 functionality in assembly shaders.
969	*
970	*/
971	/** @todo distinguish between vertex and pixel shaders??? */
972	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE /* The alternative profile has a higher number here (ati/darwin). */
973	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
974	const char pszShadingLanguageVersion = (const char )glGetString(GL_SHADING_LANGUAGE_VERSION);
975	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
976	#else
977	const char pszShadingLanguageVersion = (const char )glGetString(GL_SHADING_LANGUAGE_VERSION);
978	#endif
979	float v = pszShadingLanguageVersion ? atof(pszShadingLanguageVersion) : 0.0f;
980	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_NV_gpu_program4 ")
981	\|\| strstr(pState->pszOtherExtensions, " GL_NV_gpu_program4 "))
982	{
983	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_40;
984	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_40;
985	}
986	else
987	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_NV_vertex_program3 ")
988	\|\| strstr(pState->pszOtherExtensions, " GL_NV_vertex_program3 ")
989	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_shader_texture_lod ") /* Wine claims this suggests SM 3.0 support */
990	\|\| strstr(pState->pszOtherExtensions, " GL_ARB_shader_texture_lod ")
991	)
992	{
993	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_30;
994	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_30;
995	}
996	else
997	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_fragment_program ")
998	\|\| strstr(pState->pszOtherExtensions, " GL_ARB_fragment_program "))
999	{
1000	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_20;
1001	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_20;
1002	}
1003	else
1004	{
1005	LogRel(("VMSVGA3D: WARNING: unknown support for assembly shaders!!\n"));
1006	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_11;
1007	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_11;
1008	}
1009
1010	/* Now check the shading language version, in case it indicates a higher supported version. */
1011	if (v >= 3.30f)
1012	{
1013	pState->caps.vertexShaderVersion = RT_MAX(pState->caps.vertexShaderVersion, SVGA3DVSVERSION_40);
1014	pState->caps.fragmentShaderVersion = RT_MAX(pState->caps.fragmentShaderVersion, SVGA3DPSVERSION_40);
1015	}
1016	else
1017	if (v >= 1.20f)
1018	{
1019	pState->caps.vertexShaderVersion = RT_MAX(pState->caps.vertexShaderVersion, SVGA3DVSVERSION_20);
1020	pState->caps.fragmentShaderVersion = RT_MAX(pState->caps.fragmentShaderVersion, SVGA3DPSVERSION_20);
1021	}
1022
1023	if ( !vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_vertex_array_bgra ")
1024	&& !vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_vertex_array_bgra "))
1025	{
1026	LogRel(("VMSVGA3D: WARNING: Missing required extension GL_ARB_vertex_array_bgra (d3dcolor)!!!\n"));
1027	}
1028
1029	/*
1030	* Tweak capabilities.
1031	*/
1032	/* Intel Windows drivers return 31, while the guest expects 32 at least. */
1033	if ( pState->caps.maxVertexShaderTemps < 32
1034	&& vmsvga3dIsVendorIntel())
1035	pState->caps.maxVertexShaderTemps = 32;
1036
1037	#if 0
1038	SVGA3D_DEVCAP_MAX_FIXED_VERTEXBLEND = 11,
1039	SVGA3D_DEVCAP_QUERY_TYPES = 15,
1040	SVGA3D_DEVCAP_TEXTURE_GRADIENT_SAMPLING = 16,
1041	SVGA3D_DEVCAP_MAX_POINT_SIZE = 17,
1042	SVGA3D_DEVCAP_MAX_SHADER_TEXTURES = 18,
1043	SVGA3D_DEVCAP_MAX_VOLUME_EXTENT = 21,
1044	SVGA3D_DEVCAP_MAX_TEXTURE_REPEAT = 22,
1045	SVGA3D_DEVCAP_MAX_TEXTURE_ASPECT_RATIO = 23,
1046	SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY = 24,
1047	SVGA3D_DEVCAP_MAX_PRIMITIVE_COUNT = 25,
1048	SVGA3D_DEVCAP_MAX_VERTEX_INDEX = 26,
1049	SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_INSTRUCTIONS = 28,
1050	SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS = 29,
1051	SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS = 30,
1052	SVGA3D_DEVCAP_TEXTURE_OPS = 31,
1053	SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8 = 32,
1054	SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8 = 33,
1055	SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10 = 34,
1056	SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5 = 35,
1057	SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5 = 36,
1058	SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4 = 37,
1059	SVGA3D_DEVCAP_SURFACEFMT_R5G6B5 = 38,
1060	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16 = 39,
1061	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8 = 40,
1062	SVGA3D_DEVCAP_SURFACEFMT_ALPHA8 = 41,
1063	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8 = 42,
1064	SVGA3D_DEVCAP_SURFACEFMT_Z_D16 = 43,
1065	SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8 = 44,
1066	SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8 = 45,
1067	SVGA3D_DEVCAP_SURFACEFMT_DXT1 = 46,
1068	SVGA3D_DEVCAP_SURFACEFMT_DXT2 = 47,
1069	SVGA3D_DEVCAP_SURFACEFMT_DXT3 = 48,
1070	SVGA3D_DEVCAP_SURFACEFMT_DXT4 = 49,
1071	SVGA3D_DEVCAP_SURFACEFMT_DXT5 = 50,
1072	SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8 = 51,
1073	SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10 = 52,
1074	SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8 = 53,
1075	SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8 = 54,
1076	SVGA3D_DEVCAP_SURFACEFMT_CxV8U8 = 55,
1077	SVGA3D_DEVCAP_SURFACEFMT_R_S10E5 = 56,
1078	SVGA3D_DEVCAP_SURFACEFMT_R_S23E8 = 57,
1079	SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5 = 58,
1080	SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8 = 59,
1081	SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5 = 60,
1082	SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8 = 61,
1083	SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEXTURES = 63,
1084	SVGA3D_DEVCAP_SURFACEFMT_V16U16 = 65,
1085	SVGA3D_DEVCAP_SURFACEFMT_G16R16 = 66,
1086	SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16 = 67,
1087	SVGA3D_DEVCAP_SURFACEFMT_UYVY = 68,
1088	SVGA3D_DEVCAP_SURFACEFMT_YUY2 = 69,
1089	SVGA3D_DEVCAP_MULTISAMPLE_NONMASKABLESAMPLES = 70,
1090	SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES = 71,
1091	SVGA3D_DEVCAP_ALPHATOCOVERAGE = 72,
1092	SVGA3D_DEVCAP_SUPERSAMPLE = 73,
1093	SVGA3D_DEVCAP_AUTOGENMIPMAPS = 74,
1094	SVGA3D_DEVCAP_SURFACEFMT_NV12 = 75,
1095	SVGA3D_DEVCAP_SURFACEFMT_AYUV = 76,
1096	SVGA3D_DEVCAP_SURFACEFMT_Z_DF16 = 79,
1097	SVGA3D_DEVCAP_SURFACEFMT_Z_DF24 = 80,
1098	SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT = 81,
1099	SVGA3D_DEVCAP_SURFACEFMT_BC4_UNORM = 82,
1100	SVGA3D_DEVCAP_SURFACEFMT_BC5_UNORM = 83,
1101	#endif
1102
1103	LogRel(("VMSVGA3d: Capabilities:\n"));
1104	LogRel(("VMSVGA3d: maxActiveLights=%-2d maxTextures=%-2d\n",
1105	pState->caps.maxActiveLights, pState->caps.maxTextures));
1106	LogRel(("VMSVGA3d: maxClipDistances=%-2d maxColorAttachments=%-2d maxClipDistances=%d\n",
1107	pState->caps.maxClipDistances, pState->caps.maxColorAttachments, pState->caps.maxClipDistances));
1108	LogRel(("VMSVGA3d: maxColorAttachments=%-2d maxTextureAnisotropy=%-2d maxRectangleTextureSize=%d\n",
1109	pState->caps.maxColorAttachments, pState->caps.maxTextureAnisotropy, pState->caps.maxRectangleTextureSize));
1110	LogRel(("VMSVGA3d: maxVertexShaderTemps=%-2d maxVertexShaderInstructions=%d maxFragmentShaderInstructions=%d\n",
1111	pState->caps.maxVertexShaderTemps, pState->caps.maxVertexShaderInstructions, pState->caps.maxFragmentShaderInstructions));
1112	LogRel(("VMSVGA3d: maxFragmentShaderTemps=%d flPointSize={%d.%02u, %d.%02u}\n",
1113	pState->caps.maxFragmentShaderTemps,
1114	(int)pState->caps.flPointSize[0], (int)(pState->caps.flPointSize[0] * 100) % 100,
1115	(int)pState->caps.flPointSize[1], (int)(pState->caps.flPointSize[1] * 100) % 100));
1116	LogRel(("VMSVGA3d: fragmentShaderVersion=%-2d vertexShaderVersion=%-2d\n",
1117	pState->caps.fragmentShaderVersion, pState->caps.vertexShaderVersion));
1118	LogRel(("VMSVGA3d: fS3TCSupported=%-2d fTextureFilterAnisotropicSupported=%d\n",
1119	pState->caps.fS3TCSupported, pState->caps.fTextureFilterAnisotropicSupported));
1120
1121
1122	/* Initialize the shader library. */
1123	pState->ShaderIf.pfnSwitchInitProfile = vmsvga3dShaderIfSwitchInitProfile;
1124	pState->ShaderIf.pfnGetNextExtension = vmsvga3dShaderIfGetNextExtension;
1125	rc = ShaderInitLib(&pState->ShaderIf);
1126	AssertRC(rc);
1127
1128	/* Cleanup */
1129	rc = vmsvga3dContextDestroy(pThisCC, 1);
1130	AssertRC(rc);
1131	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
1132	rc = vmsvga3dContextDestroy(pThisCC, 2);
1133	AssertRC(rc);
1134	#endif
1135
1136	if ( pState->rsGLVersion < 3.0
1137	&& pState->rsOtherGLVersion < 3.0 /* darwin: legacy profile hack */)
1138	{
1139	LogRel(("VMSVGA3d: unsupported OpenGL version; minimum is 3.0\n"));
1140	return VERR_NOT_IMPLEMENTED;
1141	}
1142
1143	return VINF_SUCCESS;
1144	}
1145
1146	int vmsvga3dReset(PVGASTATECC pThisCC)
1147	{
1148	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1149	AssertReturn(pThisCC->svga.p3dState, VERR_NO_MEMORY);
1150
1151	/* Destroy all leftover surfaces. */
1152	for (uint32_t i = 0; i < pState->cSurfaces; i++)
1153	{
1154	if (pState->papSurfaces[i]->id != SVGA3D_INVALID_ID)
1155	vmsvga3dSurfaceDestroy(pThisCC, pState->papSurfaces[i]->id);
1156	}
1157
1158	/* Destroy all leftover contexts. */
1159	for (uint32_t i = 0; i < pState->cContexts; i++)
1160	{
1161	if (pState->papContexts[i]->id != SVGA3D_INVALID_ID)
1162	vmsvga3dContextDestroy(pThisCC, pState->papContexts[i]->id);
1163	}
1164
1165	if (pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
1166	vmsvga3dContextDestroyOgl(pThisCC, &pState->SharedCtx, VMSVGA3D_SHARED_CTX_ID);
1167
1168	return VINF_SUCCESS;
1169	}
1170
1171	int vmsvga3dTerminate(PVGASTATECC pThisCC)
1172	{
1173	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1174	AssertReturn(pState, VERR_WRONG_ORDER);
1175	int rc;
1176
1177	rc = vmsvga3dReset(pThisCC);
1178	AssertRCReturn(rc, rc);
1179
1180	/* Terminate the shader library. */
1181	rc = ShaderDestroyLib();
1182	AssertRC(rc);
1183
1184	#ifdef RT_OS_WINDOWS
1185	/* Terminate the window creation thread. */
1186	rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_EXIT, 0, 0);
1187	AssertRCReturn(rc, rc);
1188
1189	RTSemEventDestroy(pState->WndRequestSem);
1190	#elif defined(RT_OS_DARWIN)
1191
1192	#elif defined(RT_OS_LINUX)
1193	/* signal to the thread that it is supposed to exit */
1194	pState->bTerminate = true;
1195	/* wait for it to terminate */
1196	rc = RTThreadWait(pState->pWindowThread, 10000, NULL);
1197	AssertRC(rc);
1198	XCloseDisplay(pState->display);
1199	#endif
1200
1201	RTStrFree(pState->pszExtensions);
1202	pState->pszExtensions = NULL;
1203	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
1204	RTStrFree(pState->pszOtherExtensions);
1205	#endif
1206	pState->pszOtherExtensions = NULL;
1207
1208	return VINF_SUCCESS;
1209	}
1210
1211
1212	void vmsvga3dUpdateHostScreenViewport(PVGASTATECC pThisCC, uint32_t idScreen, VMSVGAVIEWPORT const *pOldViewport)
1213	{
1214	/** @todo Move the visible framebuffer content here, don't wait for the guest to
1215	* redraw it. */
1216
1217	#ifdef RT_OS_DARWIN
1218	RT_NOREF(pOldViewport);
1219	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1220	if ( pState
1221	&& idScreen == 0
1222	&& pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
1223	{
1224	vmsvga3dCocoaViewUpdateViewport(pState->SharedCtx.cocoaView);
1225	}
1226	#else
1227	RT_NOREF(pThisCC, idScreen, pOldViewport);
1228	#endif
1229	}
1230
1231
1232	/**
1233	* Worker for vmsvga3dQueryCaps that figures out supported operations for a
1234	* given surface format capability.
1235	*
1236	* @returns Supported/indented operations (SVGA3DFORMAT_OP_XXX).
1237	* @param idx3dCaps The SVGA3D_CAPS_XXX value of the surface format.
1238	*
1239	* @remarks See fromat_cap_table in svga_format.c (mesa/gallium) for a reference
1240	* of implicit guest expectations:
1241	* http://cgit.freedesktop.org/mesa/mesa/tree/src/gallium/drivers/svga/svga_format.c
1242	*/
1243	static uint32_t vmsvga3dGetSurfaceFormatSupport(uint32_t idx3dCaps)
1244	{
1245	uint32_t result = 0;
1246
1247	/** @todo missing:
1248	*
1249	* SVGA3DFORMAT_OP_PIXELSIZE
1250	*/
1251
1252	switch (idx3dCaps)
1253	{
1254	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1255	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1256	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1257	result \|= SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB
1258	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1259	\| SVGA3DFORMAT_OP_DISPLAYMODE /* Should not be set for alpha formats. */
1260	\| SVGA3DFORMAT_OP_3DACCELERATION; /* implies OP_DISPLAYMODE */
1261	break;
1262
1263	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1264	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1265	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1266	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1267	result \|= SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB
1268	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1269	\| SVGA3DFORMAT_OP_SAME_FORMAT_UP_TO_ALPHA_RENDERTARGET;
1270	break;
1271	}
1272
1273	/** @todo check hardware caps! */
1274	switch (idx3dCaps)
1275	{
1276	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1277	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1278	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1279	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1280	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1281	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1282	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1283	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16:
1284	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8:
1285	case SVGA3D_DEVCAP_SURFACEFMT_ALPHA8:
1286	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8:
1287	result \|= SVGA3DFORMAT_OP_TEXTURE
1288	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
1289	\| SVGA3DFORMAT_OP_OFFSCREENPLAIN
1290	\| SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET
1291	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1292	\| SVGA3DFORMAT_OP_CUBETEXTURE
1293	\| SVGA3DFORMAT_OP_SRGBREAD
1294	\| SVGA3DFORMAT_OP_SRGBWRITE;
1295	break;
1296
1297	case SVGA3D_DEVCAP_SURFACEFMT_Z_D16:
1298	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8:
1299	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8:
1300	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF16:
1301	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF24:
1302	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT:
1303	result \|= SVGA3DFORMAT_OP_ZSTENCIL
1304	\| SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH
1305	\| SVGA3DFORMAT_OP_TEXTURE /* Necessary for Ubuntu Unity */;
1306	break;
1307
1308	case SVGA3D_DEVCAP_SURFACEFMT_DXT1:
1309	case SVGA3D_DEVCAP_SURFACEFMT_DXT2:
1310	case SVGA3D_DEVCAP_SURFACEFMT_DXT3:
1311	case SVGA3D_DEVCAP_SURFACEFMT_DXT4:
1312	case SVGA3D_DEVCAP_SURFACEFMT_DXT5:
1313	result \|= SVGA3DFORMAT_OP_TEXTURE
1314	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1315	\| SVGA3DFORMAT_OP_CUBETEXTURE
1316	\| SVGA3DFORMAT_OP_SRGBREAD;
1317	break;
1318
1319	case SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8:
1320	case SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10:
1321	case SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8:
1322	case SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8:
1323	case SVGA3D_DEVCAP_SURFACEFMT_CxV8U8:
1324	break;
1325
1326	case SVGA3D_DEVCAP_SURFACEFMT_R_S10E5:
1327	case SVGA3D_DEVCAP_SURFACEFMT_R_S23E8:
1328	case SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5:
1329	case SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8:
1330	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5:
1331	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8:
1332	result \|= SVGA3DFORMAT_OP_TEXTURE
1333	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1334	\| SVGA3DFORMAT_OP_CUBETEXTURE
1335	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET;
1336	break;
1337
1338	case SVGA3D_DEVCAP_SURFACEFMT_V16U16:
1339	case SVGA3D_DEVCAP_SURFACEFMT_G16R16:
1340	case SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16:
1341	result \|= SVGA3DFORMAT_OP_TEXTURE
1342	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1343	\| SVGA3DFORMAT_OP_CUBETEXTURE
1344	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET;
1345	break;
1346
1347	case SVGA3D_DEVCAP_SURFACEFMT_UYVY:
1348	case SVGA3D_DEVCAP_SURFACEFMT_YUY2:
1349	result \|= SVGA3DFORMAT_OP_OFFSCREENPLAIN
1350	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1351	\| SVGA3DFORMAT_OP_TEXTURE;
1352	break;
1353
1354	case SVGA3D_DEVCAP_SURFACEFMT_NV12:
1355	case SVGA3D_DEVCAP_SURFACEFMT_AYUV:
1356	break;
1357	}
1358	Log(("CAPS: %s =\n%s\n", vmsvga3dGetCapString(idx3dCaps), vmsvga3dGet3dFormatString(result)));
1359
1360	return result;
1361	}
1362
1363	#if 0 /* unused */
1364	static uint32_t vmsvga3dGetDepthFormatSupport(PVMSVGA3DSTATE pState3D, uint32_t idx3dCaps)
1365	{
1366	RT_NOREF(pState3D, idx3dCaps);
1367
1368	/** @todo test this somehow */
1369	uint32_t result = SVGA3DFORMAT_OP_ZSTENCIL \| SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH;
1370
1371	Log(("CAPS: %s =\n%s\n", vmsvga3dGetCapString(idx3dCaps), vmsvga3dGet3dFormatString(result)));
1372	return result;
1373	}
1374	#endif
1375
1376
1377	int vmsvga3dQueryCaps(PVGASTATECC pThisCC, uint32_t idx3dCaps, uint32_t *pu32Val)
1378	{
1379	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1380	AssertReturn(pState, VERR_NO_MEMORY);
1381	int rc = VINF_SUCCESS;
1382
1383	*pu32Val = 0;
1384
1385	/*
1386	* The capabilities access by current (2015-03-01) linux sources (gallium,
1387	* vmwgfx, xorg-video-vmware) are annotated, caps without xref annotations
1388	* aren't access.
1389	*/
1390
1391	switch (idx3dCaps)
1392	{
1393	/* Linux: vmwgfx_fifo.c in kmod; only used with SVGA_CAP_GBOBJECTS. */
1394	case SVGA3D_DEVCAP_3D:
1395	pu32Val = 1; / boolean? */
1396	break;
1397
1398	case SVGA3D_DEVCAP_MAX_LIGHTS:
1399	*pu32Val = pState->caps.maxActiveLights;
1400	break;
1401
1402	case SVGA3D_DEVCAP_MAX_TEXTURES:
1403	*pu32Val = pState->caps.maxTextures;
1404	break;
1405
1406	case SVGA3D_DEVCAP_MAX_CLIP_PLANES:
1407	*pu32Val = pState->caps.maxClipDistances;
1408	break;
1409
1410	/* Linux: svga_screen.c in gallium; 3.0 or later required. */
1411	case SVGA3D_DEVCAP_VERTEX_SHADER_VERSION:
1412	*pu32Val = pState->caps.vertexShaderVersion;
1413	break;
1414
1415	case SVGA3D_DEVCAP_VERTEX_SHADER:
1416	/* boolean? */
1417	*pu32Val = (pState->caps.vertexShaderVersion != SVGA3DVSVERSION_NONE);
1418	break;
1419
1420	/* Linux: svga_screen.c in gallium; 3.0 or later required. */
1421	case SVGA3D_DEVCAP_FRAGMENT_SHADER_VERSION:
1422	*pu32Val = pState->caps.fragmentShaderVersion;
1423	break;
1424
1425	case SVGA3D_DEVCAP_FRAGMENT_SHADER:
1426	/* boolean? */
1427	*pu32Val = (pState->caps.fragmentShaderVersion != SVGA3DPSVERSION_NONE);
1428	break;
1429
1430	case SVGA3D_DEVCAP_S23E8_TEXTURES:
1431	case SVGA3D_DEVCAP_S10E5_TEXTURES:
1432	/* Must be obsolete by now; surface format caps specify the same thing. */
1433	rc = VERR_INVALID_PARAMETER;
1434	break;
1435
1436	case SVGA3D_DEVCAP_MAX_FIXED_VERTEXBLEND:
1437	break;
1438
1439	/*
1440	* 2. The BUFFER_FORMAT capabilities are deprecated, and they always
1441	* return TRUE. Even on physical hardware that does not support
1442	* these formats natively, the SVGA3D device will provide an emulation
1443	* which should be invisible to the guest OS.
1444	*/
1445	case SVGA3D_DEVCAP_D16_BUFFER_FORMAT:
1446	case SVGA3D_DEVCAP_D24S8_BUFFER_FORMAT:
1447	case SVGA3D_DEVCAP_D24X8_BUFFER_FORMAT:
1448	*pu32Val = 1;
1449	break;
1450
1451	case SVGA3D_DEVCAP_QUERY_TYPES:
1452	break;
1453
1454	case SVGA3D_DEVCAP_TEXTURE_GRADIENT_SAMPLING:
1455	break;
1456
1457	/* Linux: svga_screen.c in gallium; capped at 80.0, default 1.0. */
1458	case SVGA3D_DEVCAP_MAX_POINT_SIZE:
1459	AssertCompile(sizeof(uint32_t) == sizeof(float));
1460	(float )pu32Val = pState->caps.flPointSize[1];
1461	break;
1462
1463	case SVGA3D_DEVCAP_MAX_SHADER_TEXTURES:
1464	/** @todo ?? */
1465	rc = VERR_INVALID_PARAMETER;
1466	break;
1467
1468	/* Linux: svga_screen.c in gallium (for PIPE_CAP_MAX_TEXTURE_2D_LEVELS); have default if missing. */
1469	case SVGA3D_DEVCAP_MAX_TEXTURE_WIDTH:
1470	case SVGA3D_DEVCAP_MAX_TEXTURE_HEIGHT:
1471	*pu32Val = pState->caps.maxRectangleTextureSize;
1472	break;
1473
1474	/* Linux: svga_screen.c in gallium (for PIPE_CAP_MAX_TEXTURE_3D_LEVELS); have default if missing. */
1475	case SVGA3D_DEVCAP_MAX_VOLUME_EXTENT:
1476	//*pu32Val = pCaps->MaxVolumeExtent;
1477	*pu32Val = 256;
1478	break;
1479
1480	case SVGA3D_DEVCAP_MAX_TEXTURE_REPEAT:
1481	pu32Val = 32768; / hardcoded in Wine */
1482	break;
1483
1484	case SVGA3D_DEVCAP_MAX_TEXTURE_ASPECT_RATIO:
1485	//*pu32Val = pCaps->MaxTextureAspectRatio;
1486	break;
1487
1488	/* Linux: svga_screen.c in gallium (for PIPE_CAPF_MAX_TEXTURE_ANISOTROPY); defaults to 4.0. */
1489	case SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY:
1490	*pu32Val = pState->caps.maxTextureAnisotropy;
1491	break;
1492
1493	case SVGA3D_DEVCAP_MAX_PRIMITIVE_COUNT:
1494	case SVGA3D_DEVCAP_MAX_VERTEX_INDEX:
1495	pu32Val = 0xFFFFF; / hardcoded in Wine */
1496	break;
1497
1498	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_VERTEX/PIPE_SHADER_CAP_MAX_INSTRUCTIONS); defaults to 512. */
1499	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_INSTRUCTIONS:
1500	*pu32Val = pState->caps.maxVertexShaderInstructions;
1501	break;
1502
1503	case SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_INSTRUCTIONS:
1504	*pu32Val = pState->caps.maxFragmentShaderInstructions;
1505	break;
1506
1507	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_VERTEX/PIPE_SHADER_CAP_MAX_TEMPS); defaults to 32. */
1508	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS:
1509	*pu32Val = pState->caps.maxVertexShaderTemps;
1510	break;
1511
1512	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_FRAGMENT/PIPE_SHADER_CAP_MAX_TEMPS); defaults to 32. */
1513	case SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS:
1514	*pu32Val = pState->caps.maxFragmentShaderTemps;
1515	break;
1516
1517	case SVGA3D_DEVCAP_TEXTURE_OPS:
1518	break;
1519
1520	case SVGA3D_DEVCAP_MULTISAMPLE_NONMASKABLESAMPLES:
1521	break;
1522
1523	case SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES:
1524	break;
1525
1526	case SVGA3D_DEVCAP_ALPHATOCOVERAGE:
1527	break;
1528
1529	case SVGA3D_DEVCAP_SUPERSAMPLE:
1530	break;
1531
1532	case SVGA3D_DEVCAP_AUTOGENMIPMAPS:
1533	//*pu32Val = !!(pCaps->Caps2 & D3DCAPS2_CANAUTOGENMIPMAP);
1534	break;
1535
1536	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEXTURES:
1537	break;
1538
1539	case SVGA3D_DEVCAP_MAX_RENDER_TARGETS: /** @todo same thing? */
1540	case SVGA3D_DEVCAP_MAX_SIMULTANEOUS_RENDER_TARGETS:
1541	*pu32Val = pState->caps.maxColorAttachments;
1542	break;
1543
1544	/*
1545	* This is the maximum number of SVGA context IDs that the guest
1546	* can define using SVGA_3D_CMD_CONTEXT_DEFINE.
1547	*/
1548	case SVGA3D_DEVCAP_MAX_CONTEXT_IDS:
1549	*pu32Val = SVGA3D_MAX_CONTEXT_IDS;
1550	break;
1551
1552	/*
1553	* This is the maximum number of SVGA surface IDs that the guest
1554	* can define using SVGA_3D_CMD_SURFACE_DEFINE*.
1555	*/
1556	case SVGA3D_DEVCAP_MAX_SURFACE_IDS:
1557	*pu32Val = SVGA3D_MAX_SURFACE_IDS;
1558	break;
1559
1560	#if 0 /* Appeared more recently, not yet implemented. */
1561	/* Linux: svga_screen.c in gallium; defaults to FALSE. */
1562	case SVGA3D_DEVCAP_LINE_AA:
1563	break;
1564	/* Linux: svga_screen.c in gallium; defaults to FALSE. */
1565	case SVGA3D_DEVCAP_LINE_STIPPLE:
1566	break;
1567	/* Linux: svga_screen.c in gallium; defaults to 1.0. */
1568	case SVGA3D_DEVCAP_MAX_LINE_WIDTH:
1569	break;
1570	/* Linux: svga_screen.c in gallium; defaults to 1.0. */
1571	case SVGA3D_DEVCAP_MAX_AA_LINE_WIDTH:
1572	break;
1573	#endif
1574
1575	/*
1576	* Supported surface formats.
1577	* Linux: svga_format.c in gallium, format_cap_table defines implicit expectations.
1578	*/
1579	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1580	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1581	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1582	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1583	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1584	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1585	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1586	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16:
1587	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8:
1588	case SVGA3D_DEVCAP_SURFACEFMT_ALPHA8:
1589	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8:
1590	case SVGA3D_DEVCAP_SURFACEFMT_Z_D16:
1591	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8:
1592	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8:
1593	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF16:
1594	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF24:
1595	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT:
1596	case SVGA3D_DEVCAP_SURFACEFMT_DXT1:
1597	*pu32Val = vmsvga3dGetSurfaceFormatSupport(idx3dCaps);
1598	break;
1599
1600	case SVGA3D_DEVCAP_SURFACEFMT_DXT2:
1601	case SVGA3D_DEVCAP_SURFACEFMT_DXT3:
1602	case SVGA3D_DEVCAP_SURFACEFMT_DXT4:
1603	case SVGA3D_DEVCAP_SURFACEFMT_DXT5:
1604	case SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8:
1605	case SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10:
1606	case SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8:
1607	case SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8:
1608	case SVGA3D_DEVCAP_SURFACEFMT_CxV8U8:
1609	case SVGA3D_DEVCAP_SURFACEFMT_R_S10E5:
1610	case SVGA3D_DEVCAP_SURFACEFMT_R_S23E8:
1611	case SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5:
1612	case SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8:
1613	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5:
1614	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8:
1615	case SVGA3D_DEVCAP_SURFACEFMT_V16U16:
1616	case SVGA3D_DEVCAP_SURFACEFMT_G16R16:
1617	case SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16:
1618	case SVGA3D_DEVCAP_SURFACEFMT_UYVY:
1619	case SVGA3D_DEVCAP_SURFACEFMT_YUY2:
1620	case SVGA3D_DEVCAP_SURFACEFMT_NV12:
1621	case SVGA3D_DEVCAP_SURFACEFMT_AYUV:
1622	*pu32Val = vmsvga3dGetSurfaceFormatSupport(idx3dCaps);
1623	break;
1624
1625	/* Linux: Not referenced in current sources. */
1626	case SVGA3D_DEVCAP_SURFACEFMT_BC4_UNORM:
1627	case SVGA3D_DEVCAP_SURFACEFMT_BC5_UNORM:
1628	Log(("CAPS: Unknown CAP %s\n", vmsvga3dGetCapString(idx3dCaps)));
1629	rc = VERR_INVALID_PARAMETER;
1630	*pu32Val = 0;
1631	break;
1632
1633	default:
1634	Log(("CAPS: Unexpected CAP %d\n", idx3dCaps));
1635	rc = VERR_INVALID_PARAMETER;
1636	break;
1637	}
1638
1639	Log(("CAPS: %s - %x\n", vmsvga3dGetCapString(idx3dCaps), *pu32Val));
1640	return rc;
1641	}
1642
1643	/**
1644	* Convert SVGA format value to its OpenGL equivalent
1645	*
1646	* @remarks Clues to be had in format_texture_info table (wined3d/utils.c) with
1647	* help from wined3dformat_from_d3dformat().
1648	*/
1649	void vmsvga3dSurfaceFormat2OGL(PVMSVGA3DSURFACE pSurface, SVGA3dSurfaceFormat format)
1650	{
1651	#if 0
1652	#define AssertTestFmt(f) AssertMsgFailed(("Test me - " #f "\n"))
1653	#else
1654	#define AssertTestFmt(f) do {} while(0)
1655	#endif
1656	/* Init cbBlockGL for non-emulated formats. */
1657	pSurface->cbBlockGL = pSurface->cbBlock;
1658
1659	switch (format)
1660	{
1661	case SVGA3D_X8R8G8B8: /* D3DFMT_X8R8G8B8 - WINED3DFMT_B8G8R8X8_UNORM */
1662	pSurface->internalFormatGL = GL_RGB8;
1663	pSurface->formatGL = GL_BGRA;
1664	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1665	break;
1666	case SVGA3D_A8R8G8B8: /* D3DFMT_A8R8G8B8 - WINED3DFMT_B8G8R8A8_UNORM */
1667	pSurface->internalFormatGL = GL_RGBA8;
1668	pSurface->formatGL = GL_BGRA;
1669	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1670	break;
1671	case SVGA3D_R5G6B5: /* D3DFMT_R5G6B5 - WINED3DFMT_B5G6R5_UNORM */
1672	pSurface->internalFormatGL = GL_RGB5;
1673	pSurface->formatGL = GL_RGB;
1674	pSurface->typeGL = GL_UNSIGNED_SHORT_5_6_5;
1675	AssertTestFmt(SVGA3D_R5G6B5);
1676	break;
1677	case SVGA3D_X1R5G5B5: /* D3DFMT_X1R5G5B5 - WINED3DFMT_B5G5R5X1_UNORM */
1678	pSurface->internalFormatGL = GL_RGB5;
1679	pSurface->formatGL = GL_BGRA;
1680	pSurface->typeGL = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1681	AssertTestFmt(SVGA3D_X1R5G5B5);
1682	break;
1683	case SVGA3D_A1R5G5B5: /* D3DFMT_A1R5G5B5 - WINED3DFMT_B5G5R5A1_UNORM */
1684	pSurface->internalFormatGL = GL_RGB5_A1;
1685	pSurface->formatGL = GL_BGRA;
1686	pSurface->typeGL = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1687	AssertTestFmt(SVGA3D_A1R5G5B5);
1688	break;
1689	case SVGA3D_A4R4G4B4: /* D3DFMT_A4R4G4B4 - WINED3DFMT_B4G4R4A4_UNORM */
1690	pSurface->internalFormatGL = GL_RGBA4;
1691	pSurface->formatGL = GL_BGRA;
1692	pSurface->typeGL = GL_UNSIGNED_SHORT_4_4_4_4_REV;
1693	AssertTestFmt(SVGA3D_A4R4G4B4);
1694	break;
1695
1696	case SVGA3D_R8G8B8A8_UNORM:
1697	pSurface->internalFormatGL = GL_RGBA8;
1698	pSurface->formatGL = GL_RGBA;
1699	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1700	break;
1701
1702	case SVGA3D_Z_D32: /* D3DFMT_D32 - WINED3DFMT_D32_UNORM */
1703	pSurface->internalFormatGL = GL_DEPTH_COMPONENT32;
1704	pSurface->formatGL = GL_DEPTH_COMPONENT;
1705	pSurface->typeGL = GL_UNSIGNED_INT;
1706	break;
1707	case SVGA3D_Z_D16: /* D3DFMT_D16 - WINED3DFMT_D16_UNORM */
1708	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16; /** @todo Wine suggests GL_DEPTH_COMPONENT24. */
1709	pSurface->formatGL = GL_DEPTH_COMPONENT;
1710	pSurface->typeGL = GL_UNSIGNED_SHORT;
1711	AssertTestFmt(SVGA3D_Z_D16);
1712	break;
1713	case SVGA3D_Z_D24S8: /* D3DFMT_D24S8 - WINED3DFMT_D24_UNORM_S8_UINT */
1714	pSurface->internalFormatGL = GL_DEPTH24_STENCIL8;
1715	pSurface->formatGL = GL_DEPTH_STENCIL;
1716	pSurface->typeGL = GL_UNSIGNED_INT_24_8;
1717	break;
1718	case SVGA3D_Z_D15S1: /* D3DFMT_D15S1 - WINED3DFMT_S1_UINT_D15_UNORM */
1719	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16; /** @todo ??? */
1720	pSurface->formatGL = GL_DEPTH_STENCIL;
1721	pSurface->typeGL = GL_UNSIGNED_SHORT;
1722	/** @todo Wine sources hints at no hw support for this, so test this one! */
1723	AssertTestFmt(SVGA3D_Z_D15S1);
1724	break;
1725	case SVGA3D_Z_D24X8: /* D3DFMT_D24X8 - WINED3DFMT_X8D24_UNORM */
1726	pSurface->internalFormatGL = GL_DEPTH_COMPONENT24;
1727	pSurface->formatGL = GL_DEPTH_COMPONENT;
1728	pSurface->typeGL = GL_UNSIGNED_INT;
1729	AssertTestFmt(SVGA3D_Z_D24X8);
1730	break;
1731
1732	/* Advanced D3D9 depth formats. */
1733	case SVGA3D_Z_DF16: /* D3DFMT_DF16? - not supported */
1734	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16;
1735	pSurface->formatGL = GL_DEPTH_COMPONENT;
1736	pSurface->typeGL = GL_HALF_FLOAT;
1737	break;
1738
1739	case SVGA3D_Z_DF24: /* D3DFMT_DF24? - not supported */
1740	pSurface->internalFormatGL = GL_DEPTH_COMPONENT24;
1741	pSurface->formatGL = GL_DEPTH_COMPONENT;
1742	pSurface->typeGL = GL_FLOAT; /* ??? */
1743	break;
1744
1745	case SVGA3D_Z_D24S8_INT: /* D3DFMT_D24S8 */
1746	pSurface->internalFormatGL = GL_DEPTH24_STENCIL8;
1747	pSurface->formatGL = GL_DEPTH_STENCIL;
1748	pSurface->typeGL = GL_UNSIGNED_INT_24_8;
1749	break;
1750
1751	case SVGA3D_DXT1: /* D3DFMT_DXT1 - WINED3DFMT_DXT1 */
1752	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
1753	pSurface->formatGL = GL_RGBA; /* not used */
1754	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1755	break;
1756
1757	case SVGA3D_DXT2: /* D3DFMT_DXT2 */
1758	/* "DXT2 and DXT3 are the same from an API perspective." */
1759	RT_FALL_THRU();
1760	case SVGA3D_DXT3: /* D3DFMT_DXT3 - WINED3DFMT_DXT3 */
1761	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
1762	pSurface->formatGL = GL_RGBA; /* not used */
1763	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1764	break;
1765
1766	case SVGA3D_DXT4: /* D3DFMT_DXT4 */
1767	/* "DXT4 and DXT5 are the same from an API perspective." */
1768	RT_FALL_THRU();
1769	case SVGA3D_DXT5: /* D3DFMT_DXT5 - WINED3DFMT_DXT5 */
1770	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
1771	pSurface->formatGL = GL_RGBA; /* not used */
1772	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1773	break;
1774
1775	case SVGA3D_LUMINANCE8: /* D3DFMT_? - ? */
1776	pSurface->internalFormatGL = GL_LUMINANCE8_EXT;
1777	pSurface->formatGL = GL_LUMINANCE;
1778	pSurface->typeGL = GL_UNSIGNED_BYTE;
1779	break;
1780
1781	case SVGA3D_LUMINANCE16: /* D3DFMT_? - ? */
1782	pSurface->internalFormatGL = GL_LUMINANCE16_EXT;
1783	pSurface->formatGL = GL_LUMINANCE;
1784	pSurface->typeGL = GL_UNSIGNED_SHORT;
1785	break;
1786
1787	case SVGA3D_LUMINANCE4_ALPHA4: /* D3DFMT_? - ? */
1788	pSurface->internalFormatGL = GL_LUMINANCE4_ALPHA4_EXT;
1789	pSurface->formatGL = GL_LUMINANCE_ALPHA;
1790	pSurface->typeGL = GL_UNSIGNED_BYTE;
1791	break;
1792
1793	case SVGA3D_LUMINANCE8_ALPHA8: /* D3DFMT_? - ? */
1794	pSurface->internalFormatGL = GL_LUMINANCE8_ALPHA8_EXT;
1795	pSurface->formatGL = GL_LUMINANCE_ALPHA;
1796	pSurface->typeGL = GL_UNSIGNED_BYTE; /* unsigned_short causes issues even though this type should be 16-bit */
1797	break;
1798
1799	case SVGA3D_ALPHA8: /* D3DFMT_A8? - WINED3DFMT_A8_UNORM? */
1800	pSurface->internalFormatGL = GL_ALPHA8_EXT;
1801	pSurface->formatGL = GL_ALPHA;
1802	pSurface->typeGL = GL_UNSIGNED_BYTE;
1803	break;
1804
1805	#if 0
1806
1807	/* Bump-map formats */
1808	case SVGA3D_BUMPU8V8:
1809	return D3DFMT_V8U8;
1810	case SVGA3D_BUMPL6V5U5:
1811	return D3DFMT_L6V5U5;
1812	case SVGA3D_BUMPX8L8V8U8:
1813	return D3DFMT_X8L8V8U8;
1814	case SVGA3D_BUMPL8V8U8:
1815	/* No corresponding D3D9 equivalent. */
1816	AssertFailedReturn(D3DFMT_UNKNOWN);
1817	/* signed bump-map formats */
1818	case SVGA3D_V8U8:
1819	return D3DFMT_V8U8;
1820	case SVGA3D_Q8W8V8U8:
1821	return D3DFMT_Q8W8V8U8;
1822	case SVGA3D_CxV8U8:
1823	return D3DFMT_CxV8U8;
1824	/* mixed bump-map formats */
1825	case SVGA3D_X8L8V8U8:
1826	return D3DFMT_X8L8V8U8;
1827	case SVGA3D_A2W10V10U10:
1828	return D3DFMT_A2W10V10U10;
1829	#endif
1830
1831	case SVGA3D_ARGB_S10E5: /* 16-bit floating-point ARGB / / D3DFMT_A16B16G16R16F - WINED3DFMT_R16G16B16A16_FLOAT */
1832	pSurface->internalFormatGL = GL_RGBA16F;
1833	pSurface->formatGL = GL_RGBA;
1834	#if 0 /* bird: wine uses half float, sounds correct to me... */
1835	pSurface->typeGL = GL_FLOAT;
1836	#else
1837	pSurface->typeGL = GL_HALF_FLOAT;
1838	AssertTestFmt(SVGA3D_ARGB_S10E5);
1839	#endif
1840	break;
1841
1842	case SVGA3D_ARGB_S23E8: /* 32-bit floating-point ARGB / / D3DFMT_A32B32G32R32F - WINED3DFMT_R32G32B32A32_FLOAT */
1843	pSurface->internalFormatGL = GL_RGBA32F;
1844	pSurface->formatGL = GL_RGBA;
1845	pSurface->typeGL = GL_FLOAT; /* ?? - same as wine, so probably correct */
1846	break;
1847
1848	case SVGA3D_A2R10G10B10: /* D3DFMT_A2R10G10B10 - WINED3DFMT_B10G10R10A2_UNORM */
1849	pSurface->internalFormatGL = GL_RGB10_A2; /* ?? - same as wine, so probably correct */
1850	#if 0 /* bird: Wine uses GL_BGRA instead of GL_RGBA. */
1851	pSurface->formatGL = GL_RGBA;
1852	#else
1853	pSurface->formatGL = GL_BGRA;
1854	#endif
1855	pSurface->typeGL = GL_UNSIGNED_INT;
1856	AssertTestFmt(SVGA3D_A2R10G10B10);
1857	break;
1858
1859
1860	/* Single- and dual-component floating point formats */
1861	case SVGA3D_R_S10E5: /* D3DFMT_R16F - WINED3DFMT_R16_FLOAT */
1862	pSurface->internalFormatGL = GL_R16F;
1863	pSurface->formatGL = GL_RED;
1864	#if 0 /* bird: wine uses half float, sounds correct to me... */
1865	pSurface->typeGL = GL_FLOAT;
1866	#else
1867	pSurface->typeGL = GL_HALF_FLOAT;
1868	AssertTestFmt(SVGA3D_R_S10E5);
1869	#endif
1870	break;
1871	case SVGA3D_R_S23E8: /* D3DFMT_R32F - WINED3DFMT_R32_FLOAT */
1872	pSurface->internalFormatGL = GL_R32F;
1873	pSurface->formatGL = GL_RED;
1874	pSurface->typeGL = GL_FLOAT;
1875	break;
1876	case SVGA3D_RG_S10E5: /* D3DFMT_G16R16F - WINED3DFMT_R16G16_FLOAT */
1877	pSurface->internalFormatGL = GL_RG16F;
1878	pSurface->formatGL = GL_RG;
1879	#if 0 /* bird: wine uses half float, sounds correct to me... */
1880	pSurface->typeGL = GL_FLOAT;
1881	#else
1882	pSurface->typeGL = GL_HALF_FLOAT;
1883	AssertTestFmt(SVGA3D_RG_S10E5);
1884	#endif
1885	break;
1886	case SVGA3D_RG_S23E8: /* D3DFMT_G32R32F - WINED3DFMT_R32G32_FLOAT */
1887	pSurface->internalFormatGL = GL_RG32F;
1888	pSurface->formatGL = GL_RG;
1889	pSurface->typeGL = GL_FLOAT;
1890	break;
1891
1892	/*
1893	* Any surface can be used as a buffer object, but SVGA3D_BUFFER is
1894	* the most efficient format to use when creating new surfaces
1895	* expressly for index or vertex data.
1896	*/
1897	case SVGA3D_BUFFER:
1898	pSurface->internalFormatGL = -1;
1899	pSurface->formatGL = -1;
1900	pSurface->typeGL = -1;
1901	break;
1902
1903	#if 0
1904	return D3DFMT_UNKNOWN;
1905
1906	case SVGA3D_V16U16:
1907	return D3DFMT_V16U16;
1908	#endif
1909
1910	case SVGA3D_G16R16: /* D3DFMT_G16R16 - WINED3DFMT_R16G16_UNORM */
1911	pSurface->internalFormatGL = GL_RG16;
1912	pSurface->formatGL = GL_RG;
1913	#if 0 /* bird: Wine uses GL_UNSIGNED_SHORT here. */
1914	pSurface->typeGL = GL_UNSIGNED_INT;
1915	#else
1916	pSurface->typeGL = GL_UNSIGNED_SHORT;
1917	AssertTestFmt(SVGA3D_G16R16);
1918	#endif
1919	break;
1920
1921	case SVGA3D_A16B16G16R16: /* D3DFMT_A16B16G16R16 - WINED3DFMT_R16G16B16A16_UNORM */
1922	pSurface->internalFormatGL = GL_RGBA16;
1923	pSurface->formatGL = GL_RGBA;
1924	#if 0 /* bird: Wine uses GL_UNSIGNED_SHORT here. */
1925	pSurface->typeGL = GL_UNSIGNED_INT; /* ??? */
1926	#else
1927	pSurface->typeGL = GL_UNSIGNED_SHORT;
1928	AssertTestFmt(SVGA3D_A16B16G16R16);
1929	#endif
1930	break;
1931
1932	case SVGA3D_R8G8B8A8_SNORM:
1933	pSurface->internalFormatGL = GL_RGB8;
1934	pSurface->formatGL = GL_BGRA;
1935	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1936	AssertTestFmt(SVGA3D_R8G8B8A8_SNORM);
1937	break;
1938	case SVGA3D_R16G16_UNORM:
1939	pSurface->internalFormatGL = GL_RG16;
1940	pSurface->formatGL = GL_RG;
1941	pSurface->typeGL = GL_UNSIGNED_SHORT;
1942	AssertTestFmt(SVGA3D_R16G16_UNORM);
1943	break;
1944
1945	/* Packed Video formats */
1946	case SVGA3D_UYVY:
1947	case SVGA3D_YUY2:
1948	/* Use a BRGA texture to hold the data and convert it to an actual BGRA. */
1949	pSurface->fEmulated = true;
1950	pSurface->internalFormatGL = GL_RGBA8;
1951	pSurface->formatGL = GL_BGRA;
1952	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1953	pSurface->cbBlockGL = 4 * pSurface->cxBlock * pSurface->cyBlock;
1954	break;
1955
1956	#if 0
1957	/* Planar video formats */
1958	case SVGA3D_NV12:
1959	return (D3DFORMAT)MAKEFOURCC('N', 'V', '1', '2');
1960
1961	/* Video format with alpha */
1962	case SVGA3D_AYUV:
1963	return (D3DFORMAT)MAKEFOURCC('A', 'Y', 'U', 'V');
1964
1965	case SVGA3D_BC4_UNORM:
1966	case SVGA3D_BC5_UNORM:
1967	/* Unknown; only in DX10 & 11 */
1968	break;
1969	#endif
1970	default:
1971	AssertMsgFailed(("Unsupported format %d\n", format));
1972	break;
1973	}
1974	#undef AssertTestFmt
1975	}
1976
1977
1978	#if 0
1979	/**
1980	* Convert SVGA multi sample count value to its D3D equivalent
1981	*/
1982	D3DMULTISAMPLE_TYPE vmsvga3dMultipeSampleCount2D3D(uint32_t multisampleCount)
1983	{
1984	AssertCompile(D3DMULTISAMPLE_2_SAMPLES == 2);
1985	AssertCompile(D3DMULTISAMPLE_16_SAMPLES == 16);
1986
1987	if (multisampleCount > 16)
1988	return D3DMULTISAMPLE_NONE;
1989
1990	/** @todo exact same mapping as d3d? */
1991	return (D3DMULTISAMPLE_TYPE)multisampleCount;
1992	}
1993	#endif
1994
1995	/**
1996	* Destroy backend specific surface bits (part of SVGA_3D_CMD_SURFACE_DESTROY).
1997	*
1998	* @param pState The VMSVGA3d state.
1999	* @param pSurface The surface being destroyed.
2000	*/
2001	void vmsvga3dBackSurfaceDestroy(PVMSVGA3DSTATE pState, PVMSVGA3DSURFACE pSurface)
2002	{
2003	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
2004	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2005
2006	switch (pSurface->enmOGLResType)
2007	{
2008	case VMSVGA3D_OGLRESTYPE_BUFFER:
2009	Assert(pSurface->oglId.buffer != OPENGL_INVALID_ID);
2010	pState->ext.glDeleteBuffers(1, &pSurface->oglId.buffer);
2011	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2012	break;
2013
2014	case VMSVGA3D_OGLRESTYPE_TEXTURE:
2015	Assert(pSurface->oglId.texture != OPENGL_INVALID_ID);
2016	glDeleteTextures(1, &pSurface->oglId.texture);
2017	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2018	if (pSurface->fEmulated)
2019	{
2020	if (pSurface->idEmulated)
2021	{
2022	glDeleteTextures(1, &pSurface->idEmulated);
2023	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2024	}
2025	}
2026	else
2027	{
2028	Assert(!pSurface->idEmulated);
2029	}
2030	break;
2031
2032	case VMSVGA3D_OGLRESTYPE_RENDERBUFFER:
2033	Assert(pSurface->oglId.renderbuffer != OPENGL_INVALID_ID);
2034	pState->ext.glDeleteRenderbuffers(1, &pSurface->oglId.renderbuffer);
2035	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2036	break;
2037
2038	default:
2039	AssertMsg(!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface),
2040	("hint=%#x, type=%d\n",
2041	(pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK), pSurface->enmOGLResType));
2042	break;
2043	}
2044	}
2045
2046
2047	int vmsvga3dSurfaceCopy(PVGASTATECC pThisCC, SVGA3dSurfaceImageId dest, SVGA3dSurfaceImageId src,
2048	uint32_t cCopyBoxes, SVGA3dCopyBox *pBox)
2049	{
2050	int rc;
2051
2052	LogFunc(("Copy %d boxes from sid=%u face=%u mipmap=%u to sid=%u face=%u mipmap=%u\n",
2053	cCopyBoxes, src.sid, src.face, src.mipmap, dest.sid, dest.face, dest.mipmap));
2054
2055	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2056	AssertReturn(pState, VERR_INVALID_STATE);
2057
2058	PVMSVGA3DSURFACE pSurfaceSrc;
2059	rc = vmsvga3dSurfaceFromSid(pState, src.sid, &pSurfaceSrc);
2060	AssertRCReturn(rc, rc);
2061
2062	PVMSVGA3DSURFACE pSurfaceDst;
2063	rc = vmsvga3dSurfaceFromSid(pState, dest.sid, &pSurfaceDst);
2064	AssertRCReturn(rc, rc);
2065
2066	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurfaceSrc))
2067	{
2068	/* The source surface is still in memory. */
2069	PVMSVGA3DMIPMAPLEVEL pMipmapLevelSrc;
2070	rc = vmsvga3dMipmapLevel(pSurfaceSrc, src.face, src.mipmap, &pMipmapLevelSrc);
2071	AssertRCReturn(rc, rc);
2072
2073	PVMSVGA3DMIPMAPLEVEL pMipmapLevelDst;
2074	rc = vmsvga3dMipmapLevel(pSurfaceDst, dest.face, dest.mipmap, &pMipmapLevelDst);
2075	AssertRCReturn(rc, rc);
2076
2077	/* The copy operation is performed on the shared context. */
2078	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
2079	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2080
2081	/* Use glTexSubImage to upload the data to the destination texture.
2082	* The latter must be an OpenGL texture.
2083	*/
2084	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurfaceDst))
2085	{
2086	LogFunc(("dest sid=%u type=0x%x format=%d -> create texture\n", dest.sid, pSurfaceDst->surfaceFlags, pSurfaceDst->format));
2087	rc = vmsvga3dBackCreateTexture(pState, pContext, pContext->id, pSurfaceDst);
2088	AssertRCReturn(rc, rc);
2089	}
2090
2091	GLenum target;
2092	if (pSurfaceDst->targetGL == GL_TEXTURE_CUBE_MAP)
2093	target = vmsvga3dCubemapFaceFromIndex(dest.face);
2094	else
2095	{
2096	AssertMsg(pSurfaceDst->targetGL == GL_TEXTURE_2D, ("Test %#x\n", pSurfaceDst->targetGL));
2097	target = pSurfaceDst->targetGL;
2098	}
2099
2100	/* Save the unpacking parameters and set what we need here. */
2101	VMSVGAPACKPARAMS SavedParams;
2102	vmsvga3dOglSetUnpackParams(pState, pContext,
2103	pMipmapLevelSrc->mipmapSize.width,
2104	target == GL_TEXTURE_3D ? pMipmapLevelSrc->mipmapSize.height : 0,
2105	&SavedParams);
2106
2107	glBindTexture(pSurfaceDst->targetGL, pSurfaceDst->oglId.texture);
2108	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2109
2110	for (uint32_t i = 0; i < cCopyBoxes; ++i)
2111	{
2112	SVGA3dCopyBox clipBox = pBox[i];
2113	vmsvgaR3ClipCopyBox(&pMipmapLevelSrc->mipmapSize, &pMipmapLevelDst->mipmapSize, &clipBox);
2114	if ( !clipBox.w
2115	\|\| !clipBox.h
2116	\|\| !clipBox.d)
2117	{
2118	LogFunc(("Skipped empty box.\n"));
2119	continue;
2120	}
2121
2122	LogFunc(("copy box %d,%d,%d %dx%d to %d,%d,%d\n",
2123	clipBox.srcx, clipBox.srcy, clipBox.srcz, clipBox.w, clipBox.h, clipBox.x, clipBox.y, clipBox.z));
2124
2125	uint32_t const u32BlockX = clipBox.srcx / pSurfaceSrc->cxBlock;
2126	uint32_t const u32BlockY = clipBox.srcy / pSurfaceSrc->cyBlock;
2127	uint32_t const u32BlockZ = clipBox.srcz;
2128	Assert(u32BlockX * pSurfaceSrc->cxBlock == clipBox.srcx);
2129	Assert(u32BlockY * pSurfaceSrc->cyBlock == clipBox.srcy);
2130
2131	uint8_t const pSrcBits = (uint8_t )pMipmapLevelSrc->pSurfaceData
2132	+ pMipmapLevelSrc->cbSurfacePlane * u32BlockZ
2133	+ pMipmapLevelSrc->cbSurfacePitch * u32BlockY
2134	+ pSurfaceSrc->cbBlock * u32BlockX;
2135
2136	if (target == GL_TEXTURE_3D)
2137	{
2138	if ( pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2139	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2140	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2141	{
2142	uint32_t const cBlocksX = (clipBox.w + pSurfaceSrc->cxBlock - 1) / pSurfaceSrc->cxBlock;
2143	uint32_t const cBlocksY = (clipBox.h + pSurfaceSrc->cyBlock - 1) / pSurfaceSrc->cyBlock;
2144	uint32_t const imageSize = cBlocksX * cBlocksY * clipBox.d * pSurfaceSrc->cbBlock;
2145	pState->ext.glCompressedTexSubImage3D(target, dest.mipmap,
2146	clipBox.x, clipBox.y, clipBox.z,
2147	clipBox.w, clipBox.h, clipBox.d,
2148	pSurfaceSrc->internalFormatGL, (GLsizei)imageSize, pSrcBits);
2149	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2150	}
2151	else
2152	{
2153	pState->ext.glTexSubImage3D(target, dest.mipmap,
2154	clipBox.x, clipBox.y, clipBox.z,
2155	clipBox.w, clipBox.h, clipBox.d,
2156	pSurfaceSrc->formatGL, pSurfaceSrc->typeGL, pSrcBits);
2157	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2158	}
2159	}
2160	else
2161	{
2162	if ( pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2163	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2164	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2165	{
2166	uint32_t const cBlocksX = (clipBox.w + pSurfaceSrc->cxBlock - 1) / pSurfaceSrc->cxBlock;
2167	uint32_t const cBlocksY = (clipBox.h + pSurfaceSrc->cyBlock - 1) / pSurfaceSrc->cyBlock;
2168	uint32_t const imageSize = cBlocksX * cBlocksY * pSurfaceSrc->cbBlock;
2169	pState->ext.glCompressedTexSubImage2D(target, dest.mipmap,
2170	clipBox.x, clipBox.y, clipBox.w, clipBox.h,
2171	pSurfaceSrc->internalFormatGL, (GLsizei)imageSize, pSrcBits);
2172	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2173	}
2174	else
2175	{
2176	glTexSubImage2D(target, dest.mipmap,
2177	clipBox.x, clipBox.y, clipBox.w, clipBox.h,
2178	pSurfaceSrc->formatGL, pSurfaceSrc->typeGL, pSrcBits);
2179	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2180	}
2181	}
2182	}
2183
2184	glBindTexture(pSurfaceDst->targetGL, 0);
2185	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2186
2187	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
2188
2189	return VINF_SUCCESS;
2190	}
2191
2192	PVGASTATE pThis = PDMDEVINS_2_DATA(pThisCC->pDevIns, PVGASTATE);
2193	for (uint32_t i = 0; i < cCopyBoxes; i++)
2194	{
2195	SVGA3dBox destBox, srcBox;
2196
2197	srcBox.x = pBox[i].srcx;
2198	srcBox.y = pBox[i].srcy;
2199	srcBox.z = pBox[i].srcz;
2200	srcBox.w = pBox[i].w;
2201	srcBox.h = pBox[i].h;
2202	srcBox.d = pBox[i].d;
2203
2204	destBox.x = pBox[i].x;
2205	destBox.y = pBox[i].y;
2206	destBox.z = pBox[i].z;
2207	destBox.w = pBox[i].w;
2208	destBox.h = pBox[i].h;
2209	destBox.d = pBox[i].d;
2210
2211	/* No stretching is required, therefore use SVGA3D_STRETCH_BLT_POINT which translated to GL_NEAREST. */
2212	rc = vmsvga3dSurfaceStretchBlt(pThis, pThisCC, &dest, &destBox, &src, &srcBox, SVGA3D_STRETCH_BLT_POINT);
2213	AssertRCReturn(rc, rc);
2214	}
2215	return VINF_SUCCESS;
2216	}
2217
2218
2219	/**
2220	* Saves texture unpacking parameters and loads the specified ones.
2221	*
2222	* @param pState The VMSVGA3D state structure.
2223	* @param pContext The active context.
2224	* @param cxRow The number of pixels in a row. 0 for the entire width.
2225	* @param cyImage The height of the image in pixels. 0 for the entire height.
2226	* @param pSave Where to save stuff.
2227	*/
2228	void vmsvga3dOglSetUnpackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, GLint cxRow, GLint cyImage,
2229	PVMSVGAPACKPARAMS pSave)
2230	{
2231	RT_NOREF(pState);
2232
2233	/*
2234	* Save (ignore errors, setting the defaults we want and avoids restore).
2235	*/
2236	pSave->iAlignment = 1;
2237	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ALIGNMENT, &pSave->iAlignment), pState, pContext);
2238	pSave->cxRow = 0;
2239	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ROW_LENGTH, &pSave->cxRow), pState, pContext);
2240	pSave->cyImage = 0;
2241	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_IMAGE_HEIGHT, &pSave->cyImage), pState, pContext);
2242
2243	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2244	pSave->fSwapBytes = GL_FALSE;
2245	glGetBooleanv(GL_UNPACK_SWAP_BYTES, &pSave->fSwapBytes);
2246	Assert(pSave->fSwapBytes == GL_FALSE);
2247
2248	pSave->fLsbFirst = GL_FALSE;
2249	glGetBooleanv(GL_UNPACK_LSB_FIRST, &pSave->fLsbFirst);
2250	Assert(pSave->fLsbFirst == GL_FALSE);
2251
2252	pSave->cSkipRows = 0;
2253	glGetIntegerv(GL_UNPACK_SKIP_ROWS, &pSave->cSkipRows);
2254	Assert(pSave->cSkipRows == 0);
2255
2256	pSave->cSkipPixels = 0;
2257	glGetIntegerv(GL_UNPACK_SKIP_PIXELS, &pSave->cSkipPixels);
2258	Assert(pSave->cSkipPixels == 0);
2259
2260	pSave->cSkipImages = 0;
2261	glGetIntegerv(GL_UNPACK_SKIP_IMAGES, &pSave->cSkipImages);
2262	Assert(pSave->cSkipImages == 0);
2263
2264	VMSVGA3D_CLEAR_GL_ERRORS();
2265	#endif
2266
2267	/*
2268	* Setup unpack.
2269	*
2270	* Note! We use 1 as alignment here because we currently don't do any
2271	* aligning of line pitches anywhere.
2272	*/
2273	pSave->fChanged = 0;
2274	if (pSave->iAlignment != 1)
2275	{
2276	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, 1), pState, pContext);
2277	pSave->fChanged \|= VMSVGAPACKPARAMS_ALIGNMENT;
2278	}
2279	if (pSave->cxRow != cxRow)
2280	{
2281	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, cxRow), pState, pContext);
2282	pSave->fChanged \|= VMSVGAPACKPARAMS_ROW_LENGTH;
2283	}
2284	if (pSave->cyImage != cyImage)
2285	{
2286	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, cyImage), pState, pContext);
2287	pSave->fChanged \|= VMSVGAPACKPARAMS_IMAGE_HEIGHT;
2288	}
2289	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2290	if (pSave->fSwapBytes != 0)
2291	{
2292	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE), pState, pContext);
2293	pSave->fChanged \|= VMSVGAPACKPARAMS_SWAP_BYTES;
2294	}
2295	if (pSave->fLsbFirst != 0)
2296	{
2297	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE), pState, pContext);
2298	pSave->fChanged \|= VMSVGAPACKPARAMS_LSB_FIRST;
2299	}
2300	if (pSave->cSkipRows != 0)
2301	{
2302	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS, 0), pState, pContext);
2303	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_ROWS;
2304	}
2305	if (pSave->cSkipPixels != 0)
2306	{
2307	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0), pState, pContext);
2308	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_PIXELS;
2309	}
2310	if (pSave->cSkipImages != 0)
2311	{
2312	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_IMAGES, 0), pState, pContext);
2313	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_IMAGES;
2314	}
2315	#endif
2316	}
2317
2318
2319	/**
2320	* Restores texture unpacking parameters.
2321	*
2322	* @param pState The VMSVGA3D state structure.
2323	* @param pContext The active context.
2324	* @param pSave Where stuff was saved.
2325	*/
2326	void vmsvga3dOglRestoreUnpackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext,
2327	PCVMSVGAPACKPARAMS pSave)
2328	{
2329	RT_NOREF(pState);
2330
2331	if (pSave->fChanged & VMSVGAPACKPARAMS_ALIGNMENT)
2332	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, pSave->iAlignment), pState, pContext);
2333	if (pSave->fChanged & VMSVGAPACKPARAMS_ROW_LENGTH)
2334	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, pSave->cxRow), pState, pContext);
2335	if (pSave->fChanged & VMSVGAPACKPARAMS_IMAGE_HEIGHT)
2336	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, pSave->cyImage), pState, pContext);
2337	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2338	if (pSave->fChanged & VMSVGAPACKPARAMS_SWAP_BYTES)
2339	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SWAP_BYTES, pSave->fSwapBytes), pState, pContext);
2340	if (pSave->fChanged & VMSVGAPACKPARAMS_LSB_FIRST)
2341	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_LSB_FIRST, pSave->fLsbFirst), pState, pContext);
2342	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_ROWS)
2343	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS, pSave->cSkipRows), pState, pContext);
2344	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_PIXELS)
2345	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS, pSave->cSkipPixels), pState, pContext);
2346	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_IMAGES)
2347	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_IMAGES, pSave->cSkipImages), pState, pContext);
2348	#endif
2349	}
2350
2351	/**
2352	* Create D3D/OpenGL texture object for the specified surface.
2353	*
2354	* Surfaces are created when needed.
2355	*
2356	* @param pState The VMSVGA3d state.
2357	* @param pContext The context.
2358	* @param idAssociatedContext Probably the same as pContext->id.
2359	* @param pSurface The surface to create the texture for.
2360	*/
2361	int vmsvga3dBackCreateTexture(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, uint32_t idAssociatedContext,
2362	PVMSVGA3DSURFACE pSurface)
2363	{
2364	RT_NOREF(idAssociatedContext);
2365
2366	LogFunc(("sid=%u\n", pSurface->id));
2367
2368	uint32_t const numMipLevels = pSurface->faces[0].numMipLevels;
2369
2370	/* Fugure out what kind of texture we are creating. */
2371	GLenum binding;
2372	GLenum target;
2373	if (pSurface->surfaceFlags & SVGA3D_SURFACE_CUBEMAP)
2374	{
2375	Assert(pSurface->cFaces == 6);
2376
2377	binding = GL_TEXTURE_BINDING_CUBE_MAP;
2378	target = GL_TEXTURE_CUBE_MAP;
2379	}
2380	else
2381	{
2382	if (pSurface->paMipmapLevels[0].mipmapSize.depth > 1)
2383	{
2384	binding = GL_TEXTURE_BINDING_3D;
2385	target = GL_TEXTURE_3D;
2386	}
2387	else
2388	{
2389	Assert(pSurface->cFaces == 1);
2390
2391	binding = GL_TEXTURE_BINDING_2D;
2392	target = GL_TEXTURE_2D;
2393	}
2394	}
2395
2396	/* All textures are created in the SharedCtx. */
2397	uint32_t idPrevCtx = pState->idActiveContext;
2398	pContext = &pState->SharedCtx;
2399	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2400
2401	glGenTextures(1, &pSurface->oglId.texture);
2402	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2403	if (pSurface->fEmulated)
2404	{
2405	glGenTextures(1, &pSurface->idEmulated);
2406	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2407	}
2408	pSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_TEXTURE;
2409
2410	GLint activeTexture = 0;
2411	glGetIntegerv(binding, &activeTexture);
2412	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2413
2414	/* Must bind texture to the current context in order to change it. */
2415	glBindTexture(target, pSurface->oglId.texture);
2416	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2417
2418	/* Set the unpacking parameters. */
2419	VMSVGAPACKPARAMS SavedParams;
2420	vmsvga3dOglSetUnpackParams(pState, pContext, 0, 0, &SavedParams);
2421
2422	/** @todo Set the mip map generation filter settings. */
2423
2424	/* Set the mipmap base and max level parameters. */
2425	glTexParameteri(target, GL_TEXTURE_BASE_LEVEL, 0);
2426	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2427	glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, pSurface->faces[0].numMipLevels - 1);
2428	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2429
2430	if (pSurface->fDirty)
2431	LogFunc(("sync dirty texture\n"));
2432
2433	/* Always allocate and initialize all mipmap levels; non-initialized mipmap levels used as render targets cause failures. */
2434	if (target == GL_TEXTURE_3D)
2435	{
2436	for (uint32_t i = 0; i < numMipLevels; ++i)
2437	{
2438	/* Allocate and initialize texture memory. Passing the zero filled pSurfaceData avoids
2439	* exposing random host memory to the guest and helps a with the fedora 21 surface
2440	* corruption issues (launchpad, background, search field, login).
2441	*/
2442	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[i];
2443
2444	LogFunc(("sync dirty 3D texture mipmap level %d (pitch %x) (dirty %d)\n",
2445	i, pMipLevel->cbSurfacePitch, pMipLevel->fDirty));
2446
2447	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2448	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2449	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2450	{
2451	pState->ext.glCompressedTexImage3D(GL_TEXTURE_3D,
2452	i,
2453	pSurface->internalFormatGL,
2454	pMipLevel->mipmapSize.width,
2455	pMipLevel->mipmapSize.height,
2456	pMipLevel->mipmapSize.depth,
2457	0,
2458	pMipLevel->cbSurface,
2459	pMipLevel->pSurfaceData);
2460	}
2461	else
2462	{
2463	pState->ext.glTexImage3D(GL_TEXTURE_3D,
2464	i,
2465	pSurface->internalFormatGL,
2466	pMipLevel->mipmapSize.width,
2467	pMipLevel->mipmapSize.height,
2468	pMipLevel->mipmapSize.depth,
2469	0, /* border */
2470	pSurface->formatGL,
2471	pSurface->typeGL,
2472	pMipLevel->pSurfaceData);
2473	}
2474	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2475
2476	pMipLevel->fDirty = false;
2477	}
2478	}
2479	else if (target == GL_TEXTURE_CUBE_MAP)
2480	{
2481	for (uint32_t iFace = 0; iFace < 6; ++iFace)
2482	{
2483	GLenum const Face = vmsvga3dCubemapFaceFromIndex(iFace);
2484
2485	for (uint32_t i = 0; i < numMipLevels; ++i)
2486	{
2487	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[iFace * numMipLevels + i];
2488	Assert(pMipLevel->mipmapSize.width == pMipLevel->mipmapSize.height);
2489	Assert(pMipLevel->mipmapSize.depth == 1);
2490
2491	LogFunc(("sync cube texture face %d mipmap level %d (dirty %d)\n",
2492	iFace, i, pMipLevel->fDirty));
2493
2494	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2495	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2496	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2497	{
2498	pState->ext.glCompressedTexImage2D(Face,
2499	i,
2500	pSurface->internalFormatGL,
2501	pMipLevel->mipmapSize.width,
2502	pMipLevel->mipmapSize.height,
2503	0,
2504	pMipLevel->cbSurface,
2505	pMipLevel->pSurfaceData);
2506	}
2507	else
2508	{
2509	glTexImage2D(Face,
2510	i,
2511	pSurface->internalFormatGL,
2512	pMipLevel->mipmapSize.width,
2513	pMipLevel->mipmapSize.height,
2514	0,
2515	pSurface->formatGL,
2516	pSurface->typeGL,
2517	pMipLevel->pSurfaceData);
2518	}
2519	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2520
2521	pMipLevel->fDirty = false;
2522	}
2523	}
2524	}
2525	else if (target == GL_TEXTURE_2D)
2526	{
2527	for (uint32_t i = 0; i < numMipLevels; ++i)
2528	{
2529	/* Allocate and initialize texture memory. Passing the zero filled pSurfaceData avoids
2530	* exposing random host memory to the guest and helps a with the fedora 21 surface
2531	* corruption issues (launchpad, background, search field, login).
2532	*/
2533	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[i];
2534	Assert(pMipLevel->mipmapSize.depth == 1);
2535
2536	LogFunc(("sync dirty texture mipmap level %d (pitch %x) (dirty %d)\n",
2537	i, pMipLevel->cbSurfacePitch, pMipLevel->fDirty));
2538
2539	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2540	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2541	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2542	{
2543	pState->ext.glCompressedTexImage2D(GL_TEXTURE_2D,
2544	i,
2545	pSurface->internalFormatGL,
2546	pMipLevel->mipmapSize.width,
2547	pMipLevel->mipmapSize.height,
2548	0,
2549	pMipLevel->cbSurface,
2550	pMipLevel->pSurfaceData);
2551	}
2552	else
2553	{
2554	glTexImage2D(GL_TEXTURE_2D,
2555	i,
2556	pSurface->internalFormatGL,
2557	pMipLevel->mipmapSize.width,
2558	pMipLevel->mipmapSize.height,
2559	0,
2560	pSurface->formatGL,
2561	pSurface->typeGL,
2562	NULL);
2563	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2564
2565	if (pSurface->fEmulated)
2566	{
2567	/* Bind the emulated texture and init it. */
2568	glBindTexture(GL_TEXTURE_2D, pSurface->idEmulated);
2569	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2570
2571	glTexImage2D(GL_TEXTURE_2D,
2572	i,
2573	pSurface->internalFormatGL,
2574	pMipLevel->mipmapSize.width,
2575	pMipLevel->mipmapSize.height,
2576	0,
2577	pSurface->formatGL,
2578	pSurface->typeGL,
2579	NULL);
2580	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2581	}
2582
2583	/* Fetch texture data: either to the actual or to the emulated texture.
2584	* The pSurfaceData buffer may be smaller than the entire texture
2585	* for emulated formats, in which case only part of the texture is synched.
2586	*/
2587	uint32_t cBlocksX = pMipLevel->mipmapSize.width / pSurface->cxBlock;
2588	uint32_t cBlocksY = pMipLevel->mipmapSize.height / pSurface->cyBlock;
2589	glTexSubImage2D(GL_TEXTURE_2D,
2590	i,
2591	0,
2592	0,
2593	cBlocksX,
2594	cBlocksY,
2595	pSurface->formatGL,
2596	pSurface->typeGL,
2597	pMipLevel->pSurfaceData);
2598	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2599
2600	if (pSurface->fEmulated)
2601	{
2602	/* Update the actual texture using the format converter. */
2603	FormatConvUpdateTexture(pState, pContext, pSurface, i);
2604
2605	/* Rebind the actual texture. */
2606	glBindTexture(GL_TEXTURE_2D, pSurface->oglId.texture);
2607	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2608	}
2609	}
2610	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2611
2612	pMipLevel->fDirty = false;
2613	}
2614	}
2615
2616	pSurface->fDirty = false;
2617
2618	/* Restore unpacking parameters. */
2619	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
2620
2621	/* Restore the old active texture. */
2622	glBindTexture(target, activeTexture);
2623	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2624
2625	pSurface->surfaceFlags \|= SVGA3D_SURFACE_HINT_TEXTURE;
2626	pSurface->targetGL = target;
2627	pSurface->bindingGL = binding;
2628
2629	if (idPrevCtx < pState->cContexts && pState->papContexts[idPrevCtx]->id == idPrevCtx)
2630	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pState->papContexts[idPrevCtx]);
2631	return VINF_SUCCESS;
2632	}
2633
2634
2635	/**
2636	* Backend worker for implementing SVGA_3D_CMD_SURFACE_STRETCHBLT.
2637	*
2638	* @returns VBox status code.
2639	* @param pThis The VGA device instance.
2640	* @param pState The VMSVGA3d state.
2641	* @param pDstSurface The destination host surface.
2642	* @param uDstFace The destination face (valid).
2643	* @param uDstMipmap The destination mipmap level (valid).
2644	* @param pDstBox The destination box.
2645	* @param pSrcSurface The source host surface.
2646	* @param uSrcFace The destination face (valid).
2647	* @param uSrcMipmap The source mimap level (valid).
2648	* @param pSrcBox The source box.
2649	* @param enmMode The strecht blt mode .
2650	* @param pContext The VMSVGA3d context (already current for OGL).
2651	*/
2652	int vmsvga3dBackSurfaceStretchBlt(PVGASTATE pThis, PVMSVGA3DSTATE pState,
2653	PVMSVGA3DSURFACE pDstSurface, uint32_t uDstFace, uint32_t uDstMipmap, SVGA3dBox const *pDstBox,
2654	PVMSVGA3DSURFACE pSrcSurface, uint32_t uSrcFace, uint32_t uSrcMipmap, SVGA3dBox const *pSrcBox,
2655	SVGA3dStretchBltMode enmMode, PVMSVGA3DCONTEXT pContext)
2656	{
2657	RT_NOREF(pThis);
2658
2659	AssertReturn( RT_BOOL(pSrcSurface->surfaceFlags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL)
2660	== RT_BOOL(pDstSurface->surfaceFlags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL), VERR_NOT_IMPLEMENTED);
2661
2662	GLenum glAttachment = GL_COLOR_ATTACHMENT0;
2663	GLbitfield glMask = GL_COLOR_BUFFER_BIT;
2664	if (pDstSurface->surfaceFlags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL)
2665	{
2666	/** @todo Need GL_DEPTH_STENCIL_ATTACHMENT for depth/stencil formats? */
2667	glAttachment = GL_DEPTH_ATTACHMENT;
2668	glMask = GL_DEPTH_BUFFER_BIT;
2669	}
2670
2671	/* Activate the read and draw framebuffer objects. */
2672	pState->ext.glBindFramebuffer(GL_READ_FRAMEBUFFER, pContext->idReadFramebuffer);
2673	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2674	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, pContext->idDrawFramebuffer);
2675	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2676
2677	/* Bind the source and destination objects to the right place. */
2678	GLenum textarget;
2679	if (pSrcSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2680	textarget = vmsvga3dCubemapFaceFromIndex(uSrcFace);
2681	else
2682	{
2683	/// @todo later AssertMsg(pSrcSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pSrcSurface->targetGL));
2684	textarget = GL_TEXTURE_2D;
2685	}
2686	pState->ext.glFramebufferTexture2D(GL_READ_FRAMEBUFFER, glAttachment, textarget,
2687	pSrcSurface->oglId.texture, uSrcMipmap);
2688	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2689
2690	if (pDstSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2691	textarget = vmsvga3dCubemapFaceFromIndex(uDstFace);
2692	else
2693	{
2694	/// @todo later AssertMsg(pDstSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pDstSurface->targetGL));
2695	textarget = GL_TEXTURE_2D;
2696	}
2697	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, glAttachment, textarget,
2698	pDstSurface->oglId.texture, uDstMipmap);
2699	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2700
2701	Log(("src conv. (%d,%d)(%d,%d); dest conv (%d,%d)(%d,%d)\n",
2702	pSrcBox->x, D3D_TO_OGL_Y_COORD(pSrcSurface, pSrcBox->y + pSrcBox->h),
2703	pSrcBox->x + pSrcBox->w, D3D_TO_OGL_Y_COORD(pSrcSurface, pSrcBox->y),
2704	pDstBox->x, D3D_TO_OGL_Y_COORD(pDstSurface, pDstBox->y + pDstBox->h),
2705	pDstBox->x + pDstBox->w, D3D_TO_OGL_Y_COORD(pDstSurface, pDstBox->y)));
2706
2707	pState->ext.glBlitFramebuffer(pSrcBox->x,
2708	pSrcBox->y,
2709	pSrcBox->x + pSrcBox->w, /* exclusive. */
2710	pSrcBox->y + pSrcBox->h,
2711	pDstBox->x,
2712	pDstBox->y,
2713	pDstBox->x + pDstBox->w, /* exclusive. */
2714	pDstBox->y + pDstBox->h,
2715	glMask,
2716	(enmMode == SVGA3D_STRETCH_BLT_POINT) ? GL_NEAREST : GL_LINEAR);
2717	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2718
2719	/* Reset the frame buffer association */
2720	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer);
2721	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2722
2723	return VINF_SUCCESS;
2724	}
2725
2726	/**
2727	* Save texture packing parameters and loads those appropriate for the given
2728	* surface.
2729	*
2730	* @param pState The VMSVGA3D state structure.
2731	* @param pContext The active context.
2732	* @param pSurface The surface.
2733	* @param pSave Where to save stuff.
2734	*/
2735	void vmsvga3dOglSetPackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2736	PVMSVGAPACKPARAMS pSave)
2737	{
2738	RT_NOREF(pState);
2739	/*
2740	* Save (ignore errors, setting the defaults we want and avoids restore).
2741	*/
2742	pSave->iAlignment = 1;
2743	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_PACK_ALIGNMENT, &pSave->iAlignment), pState, pContext);
2744	pSave->cxRow = 0;
2745	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_PACK_ROW_LENGTH, &pSave->cxRow), pState, pContext);
2746
2747	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2748	pSave->cyImage = 0;
2749	glGetIntegerv(GL_PACK_IMAGE_HEIGHT, &pSave->cyImage);
2750	Assert(pSave->cyImage == 0);
2751
2752	pSave->fSwapBytes = GL_FALSE;
2753	glGetBooleanv(GL_PACK_SWAP_BYTES, &pSave->fSwapBytes);
2754	Assert(pSave->fSwapBytes == GL_FALSE);
2755
2756	pSave->fLsbFirst = GL_FALSE;
2757	glGetBooleanv(GL_PACK_LSB_FIRST, &pSave->fLsbFirst);
2758	Assert(pSave->fLsbFirst == GL_FALSE);
2759
2760	pSave->cSkipRows = 0;
2761	glGetIntegerv(GL_PACK_SKIP_ROWS, &pSave->cSkipRows);
2762	Assert(pSave->cSkipRows == 0);
2763
2764	pSave->cSkipPixels = 0;
2765	glGetIntegerv(GL_PACK_SKIP_PIXELS, &pSave->cSkipPixels);
2766	Assert(pSave->cSkipPixels == 0);
2767
2768	pSave->cSkipImages = 0;
2769	glGetIntegerv(GL_PACK_SKIP_IMAGES, &pSave->cSkipImages);
2770	Assert(pSave->cSkipImages == 0);
2771
2772	VMSVGA3D_CLEAR_GL_ERRORS();
2773	#endif
2774
2775	/*
2776	* Setup unpack.
2777	*
2778	* Note! We use 1 as alignment here because we currently don't do any
2779	* aligning of line pitches anywhere.
2780	*/
2781	NOREF(pSurface);
2782	if (pSave->iAlignment != 1)
2783	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, 1), pState, pContext);
2784	if (pSave->cxRow != 0)
2785	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ROW_LENGTH, 0), pState, pContext);
2786	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2787	if (pSave->cyImage != 0)
2788	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_IMAGE_HEIGHT, 0), pState, pContext);
2789	if (pSave->fSwapBytes != 0)
2790	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SWAP_BYTES, GL_FALSE), pState, pContext);
2791	if (pSave->fLsbFirst != 0)
2792	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_LSB_FIRST, GL_FALSE), pState, pContext);
2793	if (pSave->cSkipRows != 0)
2794	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_ROWS, 0), pState, pContext);
2795	if (pSave->cSkipPixels != 0)
2796	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_PIXELS, 0), pState, pContext);
2797	if (pSave->cSkipImages != 0)
2798	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_IMAGES, 0), pState, pContext);
2799	#endif
2800	}
2801
2802
2803	/**
2804	* Restores texture packing parameters.
2805	*
2806	* @param pState The VMSVGA3D state structure.
2807	* @param pContext The active context.
2808	* @param pSurface The surface.
2809	* @param pSave Where stuff was saved.
2810	*/
2811	void vmsvga3dOglRestorePackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2812	PCVMSVGAPACKPARAMS pSave)
2813	{
2814	RT_NOREF(pState, pSurface);
2815	if (pSave->iAlignment != 1)
2816	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, pSave->iAlignment), pState, pContext);
2817	if (pSave->cxRow != 0)
2818	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ROW_LENGTH, pSave->cxRow), pState, pContext);
2819	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2820	if (pSave->cyImage != 0)
2821	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_IMAGE_HEIGHT, pSave->cyImage), pState, pContext);
2822	if (pSave->fSwapBytes != 0)
2823	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SWAP_BYTES, pSave->fSwapBytes), pState, pContext);
2824	if (pSave->fLsbFirst != 0)
2825	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_LSB_FIRST, pSave->fLsbFirst), pState, pContext);
2826	if (pSave->cSkipRows != 0)
2827	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_ROWS, pSave->cSkipRows), pState, pContext);
2828	if (pSave->cSkipPixels != 0)
2829	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_PIXELS, pSave->cSkipPixels), pState, pContext);
2830	if (pSave->cSkipImages != 0)
2831	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_IMAGES, pSave->cSkipImages), pState, pContext);
2832	#endif
2833	}
2834
2835
2836	/**
2837	* Backend worker for implementing SVGA_3D_CMD_SURFACE_DMA that copies one box.
2838	*
2839	* @returns Failure status code or @a rc.
2840	* @param pThis The shared VGA/VMSVGA instance data.
2841	* @param pThisCC The VGA/VMSVGA state for ring-3.
2842	* @param pState The VMSVGA3d state.
2843	* @param pSurface The host surface.
2844	* @param pMipLevel Mipmap level. The caller knows it already.
2845	* @param uHostFace The host face (valid).
2846	* @param uHostMipmap The host mipmap level (valid).
2847	* @param GuestPtr The guest pointer.
2848	* @param cbGuestPitch The guest pitch.
2849	* @param transfer The transfer direction.
2850	* @param pBox The box to copy (clipped, valid, except for guest's srcx, srcy, srcz).
2851	* @param pContext The context (for OpenGL).
2852	* @param rc The current rc for all boxes.
2853	* @param iBox The current box number (for Direct 3D).
2854	*/
2855	int vmsvga3dBackSurfaceDMACopyBox(PVGASTATE pThis, PVGASTATECC pThisCC, PVMSVGA3DSTATE pState, PVMSVGA3DSURFACE pSurface,
2856	PVMSVGA3DMIPMAPLEVEL pMipLevel, uint32_t uHostFace, uint32_t uHostMipmap,
2857	SVGAGuestPtr GuestPtr, uint32_t cbGuestPitch, SVGA3dTransferType transfer,
2858	SVGA3dCopyBox const *pBox, PVMSVGA3DCONTEXT pContext, int rc, int iBox)
2859	{
2860	RT_NOREF(iBox);
2861
2862	switch (pSurface->enmOGLResType)
2863	{
2864	case VMSVGA3D_OGLRESTYPE_TEXTURE:
2865	{
2866	uint32_t cbSurfacePitch;
2867	uint8_t *pDoubleBuffer;
2868	uint64_t offHst;
2869
2870	uint32_t const u32HostBlockX = pBox->x / pSurface->cxBlock;
2871	uint32_t const u32HostBlockY = pBox->y / pSurface->cyBlock;
2872	uint32_t const u32HostZ = pBox->z;
2873	Assert(u32HostBlockX * pSurface->cxBlock == pBox->x);
2874	Assert(u32HostBlockY * pSurface->cyBlock == pBox->y);
2875
2876	uint32_t const u32GuestBlockX = pBox->srcx / pSurface->cxBlock;
2877	uint32_t const u32GuestBlockY = pBox->srcy / pSurface->cyBlock;
2878	uint32_t const u32GuestZ = pBox->srcz / pSurface->cyBlock;
2879	Assert(u32GuestBlockX * pSurface->cxBlock == pBox->srcx);
2880	Assert(u32GuestBlockY * pSurface->cyBlock == pBox->srcy);
2881
2882	uint32_t const cBlocksX = (pBox->w + pSurface->cxBlock - 1) / pSurface->cxBlock;
2883	uint32_t const cBlocksY = (pBox->h + pSurface->cyBlock - 1) / pSurface->cyBlock;
2884	AssertMsgReturn(cBlocksX && cBlocksY, ("Empty box %dx%d\n", pBox->w, pBox->h), VERR_INTERNAL_ERROR);
2885
2886	GLenum texImageTarget;
2887	if (pSurface->targetGL == GL_TEXTURE_3D)
2888	{
2889	texImageTarget = GL_TEXTURE_3D;
2890	}
2891	else if (pSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2892	{
2893	texImageTarget = vmsvga3dCubemapFaceFromIndex(uHostFace);
2894	}
2895	else
2896	{
2897	AssertMsg(pSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pSurface->targetGL));
2898	texImageTarget = GL_TEXTURE_2D;
2899	}
2900
2901	/* The buffer must be large enough to hold entire texture in the OpenGL format. */
2902	pDoubleBuffer = (uint8_t )RTMemAlloc(pSurface->cbBlockGL pMipLevel->cBlocks);
2903	AssertReturn(pDoubleBuffer, VERR_NO_MEMORY);
2904
2905	if (transfer == SVGA3D_READ_HOST_VRAM)
2906	{
2907	/* Read the entire texture to the double buffer. */
2908	GLint activeTexture;
2909
2910	/* Must bind texture to the current context in order to read it. */
2911	glGetIntegerv(pSurface->bindingGL, &activeTexture);
2912	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2913
2914	glBindTexture(pSurface->targetGL, GLTextureId(pSurface));
2915	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2916
2917	if (pSurface->fEmulated)
2918	{
2919	FormatConvReadTexture(pState, pContext, pSurface, uHostMipmap);
2920	}
2921
2922	/* Set row length and alignment of the input data. */
2923	VMSVGAPACKPARAMS SavedParams;
2924	vmsvga3dOglSetPackParams(pState, pContext, pSurface, &SavedParams);
2925
2926	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2927	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2928	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2929	{
2930	pState->ext.glGetCompressedTexImage(texImageTarget, uHostMipmap, pDoubleBuffer);
2931	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2932	}
2933	else
2934	{
2935	glGetTexImage(texImageTarget, uHostMipmap, pSurface->formatGL, pSurface->typeGL, pDoubleBuffer);
2936	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2937	}
2938
2939	vmsvga3dOglRestorePackParams(pState, pContext, pSurface, &SavedParams);
2940
2941	/* Restore the old active texture. */
2942	glBindTexture(pSurface->targetGL, activeTexture);
2943	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2944
2945	offHst = u32HostBlockX * pSurface->cbBlock + u32HostBlockY * pMipLevel->cbSurfacePitch + u32HostZ * pMipLevel->cbSurfacePlane;
2946	cbSurfacePitch = pMipLevel->cbSurfacePitch;
2947	}
2948	else
2949	{
2950	/* The buffer will contain only the copied rectangle. */
2951	offHst = 0;
2952	cbSurfacePitch = cBlocksX * pSurface->cbBlock;
2953	}
2954
2955	uint64_t offGst = u32GuestBlockX * pSurface->cbBlock + u32GuestBlockY * cbGuestPitch + u32GuestZ * cbGuestPitch * pMipLevel->mipmapSize.height;
2956
2957	for (uint32_t iPlane = 0; iPlane < pBox->d; ++iPlane)
2958	{
2959	AssertBreak(offHst < UINT32_MAX);
2960	AssertBreak(offGst < UINT32_MAX);
2961
2962	rc = vmsvgaR3GmrTransfer(pThis,
2963	pThisCC,
2964	transfer,
2965	pDoubleBuffer,
2966	pMipLevel->cbSurface,
2967	(uint32_t)offHst,
2968	cbSurfacePitch,
2969	GuestPtr,
2970	(uint32_t)offGst,
2971	cbGuestPitch,
2972	cBlocksX * pSurface->cbBlock,
2973	cBlocksY);
2974	AssertRC(rc);
2975
2976	offHst += pMipLevel->cbSurfacePlane;
2977	offGst += pMipLevel->mipmapSize.height * cbGuestPitch;
2978	}
2979
2980	/* Update the opengl surface data. */
2981	if (transfer == SVGA3D_WRITE_HOST_VRAM)
2982	{
2983	GLint activeTexture = 0;
2984	glGetIntegerv(pSurface->bindingGL, &activeTexture);
2985	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2986
2987	/* Must bind texture to the current context in order to change it. */
2988	glBindTexture(pSurface->targetGL, GLTextureId(pSurface));
2989	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2990
2991	LogFunc(("copy texture mipmap level %d (pitch %x)\n", uHostMipmap, pMipLevel->cbSurfacePitch));
2992
2993	/* Set row length and alignment of the input data. */
2994	/* We do not need to set ROW_LENGTH to w here, because the image in pDoubleBuffer is tightly packed. */
2995	VMSVGAPACKPARAMS SavedParams;
2996	vmsvga3dOglSetUnpackParams(pState, pContext, 0, 0, &SavedParams);
2997
2998	if (texImageTarget == GL_TEXTURE_3D)
2999	{
3000	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
3001	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
3002	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
3003	{
3004	pState->ext.glCompressedTexSubImage3D(texImageTarget,
3005	uHostMipmap,
3006	pBox->x,
3007	pBox->y,
3008	pBox->z,
3009	pBox->w,
3010	pBox->h,
3011	pBox->d,
3012	pSurface->internalFormatGL,
3013	cbSurfacePitch * cBlocksY * pBox->d,
3014	pDoubleBuffer);
3015	}
3016	else
3017	{
3018	pState->ext.glTexSubImage3D(texImageTarget,
3019	uHostMipmap,
3020	u32HostBlockX,
3021	u32HostBlockY,
3022	pBox->z,
3023	cBlocksX,
3024	cBlocksY,
3025	pBox->d,
3026	pSurface->formatGL,
3027	pSurface->typeGL,
3028	pDoubleBuffer);
3029	}
3030	}
3031	else
3032	{
3033	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
3034	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
3035	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
3036	{
3037	pState->ext.glCompressedTexSubImage2D(texImageTarget,
3038	uHostMipmap,
3039	pBox->x,
3040	pBox->y,
3041	pBox->w,
3042	pBox->h,
3043	pSurface->internalFormatGL,
3044	cbSurfacePitch * cBlocksY,
3045	pDoubleBuffer);
3046	}
3047	else
3048	{
3049	glTexSubImage2D(texImageTarget,
3050	uHostMipmap,
3051	u32HostBlockX,
3052	u32HostBlockY,
3053	cBlocksX,
3054	cBlocksY,
3055	pSurface->formatGL,
3056	pSurface->typeGL,
3057	pDoubleBuffer);
3058	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3059
3060	if (pSurface->fEmulated)
3061	{
3062	/* Convert the texture to the actual texture if necessary */
3063	FormatConvUpdateTexture(pState, pContext, pSurface, uHostMipmap);
3064	}
3065	}
3066	}
3067	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3068
3069	/* Restore old values. */
3070	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
3071
3072	/* Restore the old active texture. */
3073	glBindTexture(pSurface->targetGL, activeTexture);
3074	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3075	}
3076
3077	Log4(("first line:\n%.Rhxd\n", cBlocksX pSurface->cbBlock, pDoubleBuffer));
3078
3079	/* Free the double buffer. */
3080	RTMemFree(pDoubleBuffer);
3081	break;
3082	}
3083
3084	case VMSVGA3D_OGLRESTYPE_BUFFER:
3085	{
3086	/* Buffers are uncompressed. */
3087	AssertReturn(pSurface->cxBlock == 1 && pSurface->cyBlock == 1, VERR_INTERNAL_ERROR);
3088
3089	/* Caller already clipped pBox and buffers are 1-dimensional. */
3090	Assert(pBox->y == 0 && pBox->h == 1 && pBox->z == 0 && pBox->d == 1);
3091
3092	VMSVGA3D_CLEAR_GL_ERRORS();
3093	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pSurface->oglId.buffer);
3094	if (VMSVGA3D_GL_IS_SUCCESS(pContext))
3095	{
3096	GLenum enmGlTransfer = (transfer == SVGA3D_READ_HOST_VRAM) ? GL_READ_ONLY : GL_WRITE_ONLY;
3097	uint8_t pbData = (uint8_t )pState->ext.glMapBuffer(GL_ARRAY_BUFFER, enmGlTransfer);
3098	if (RT_LIKELY(pbData != NULL))
3099	{
3100	#if defined(VBOX_STRICT) && defined(RT_OS_DARWIN)
3101	GLint cbStrictBufSize;
3102	glGetBufferParameteriv(GL_ARRAY_BUFFER, GL_BUFFER_SIZE, &cbStrictBufSize);
3103	Assert(VMSVGA3D_GL_IS_SUCCESS(pContext));
3104	AssertMsg(cbStrictBufSize >= (int32_t)pMipLevel->cbSurface,
3105	("cbStrictBufSize=%#x cbSurface=%#x pContext->id=%#x\n", (uint32_t)cbStrictBufSize, pMipLevel->cbSurface, pContext->id));
3106	#endif
3107	Log(("Lock %s memory for rectangle (%d,%d)(%d,%d)\n",
3108	(pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK) == SVGA3D_SURFACE_HINT_VERTEXBUFFER ? "vertex" :
3109	(pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK) == SVGA3D_SURFACE_HINT_INDEXBUFFER ? "index" : "buffer",
3110	pBox->x, pBox->y, pBox->x + pBox->w, pBox->y + pBox->h));
3111
3112	/* The caller already copied the data to the pMipLevel->pSurfaceData buffer, see VMSVGA3DSURFACE_NEEDS_DATA. */
3113	uint32_t const offHst = pBox->x * pSurface->cbBlock;
3114	uint32_t const cbWidth = pBox->w * pSurface->cbBlock;
3115
3116	memcpy(pbData + offHst, (uint8_t *)pMipLevel->pSurfaceData + offHst, cbWidth);
3117
3118	Log4(("Buffer updated at [0x%x;0x%x):\n%.Rhxd\n", offHst, offHst + cbWidth, cbWidth, (uint8_t )pbData + offHst));
3119
3120	pState->ext.glUnmapBuffer(GL_ARRAY_BUFFER);
3121	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3122	}
3123	else
3124	VMSVGA3D_GL_GET_AND_COMPLAIN(pState, pContext, ("glMapBuffer(GL_ARRAY_BUFFER, %#x) -> NULL\n", enmGlTransfer));
3125	}
3126	else
3127	VMSVGA3D_GL_COMPLAIN(pState, pContext, ("glBindBuffer(GL_ARRAY_BUFFER, %#x)\n", pSurface->oglId.buffer));
3128	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
3129	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3130	break;
3131	}
3132
3133	default:
3134	AssertFailed();
3135	break;
3136	}
3137
3138	return rc;
3139	}
3140
3141	int vmsvga3dGenerateMipmaps(PVGASTATECC pThisCC, uint32_t sid, SVGA3dTextureFilter filter)
3142	{
3143	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3144	PVMSVGA3DSURFACE pSurface;
3145	int rc = VINF_SUCCESS;
3146	PVMSVGA3DCONTEXT pContext;
3147	uint32_t cid;
3148	GLint activeTexture = 0;
3149
3150	AssertReturn(pState, VERR_NO_MEMORY);
3151
3152	rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
3153	AssertRCReturn(rc, rc);
3154
3155	Assert(filter != SVGA3D_TEX_FILTER_FLATCUBIC);
3156	Assert(filter != SVGA3D_TEX_FILTER_GAUSSIANCUBIC);
3157	pSurface->autogenFilter = filter;
3158
3159	LogFunc(("sid=%u filter=%d\n", sid, filter));
3160
3161	cid = SVGA3D_INVALID_ID;
3162	pContext = &pState->SharedCtx;
3163	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3164
3165	if (pSurface->oglId.texture == OPENGL_INVALID_ID)
3166	{
3167	/* Unknown surface type; turn it into a texture. */
3168	LogFunc(("unknown src surface id=%x type=%d format=%d -> create texture\n", sid, pSurface->surfaceFlags, pSurface->format));
3169	rc = vmsvga3dBackCreateTexture(pState, pContext, cid, pSurface);
3170	AssertRCReturn(rc, rc);
3171	}
3172	else
3173	{
3174	/** @todo new filter */
3175	AssertFailed();
3176	}
3177
3178	glGetIntegerv(pSurface->bindingGL, &activeTexture);
3179	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3180
3181	/* Must bind texture to the current context in order to change it. */
3182	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
3183	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3184
3185	/* Generate the mip maps. */
3186	pState->ext.glGenerateMipmap(pSurface->targetGL);
3187	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3188
3189	/* Restore the old texture. */
3190	glBindTexture(pSurface->targetGL, activeTexture);
3191	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3192
3193	return VINF_SUCCESS;
3194	}
3195
3196
3197	#ifdef RT_OS_LINUX
3198	/**
3199	* X11 event handling thread.
3200	*
3201	* @returns VINF_SUCCESS (ignored)
3202	* @param hThreadSelf thread handle
3203	* @param pvUser pointer to pState structure
3204	*/
3205	DECLCALLBACK(int) vmsvga3dXEventThread(RTTHREAD hThreadSelf, void *pvUser)
3206	{
3207	RT_NOREF(hThreadSelf);
3208	PVMSVGA3DSTATE pState = (PVMSVGA3DSTATE)pvUser;
3209	while (!pState->bTerminate)
3210	{
3211	while (XPending(pState->display) > 0)
3212	{
3213	XEvent event;
3214	XNextEvent(pState->display, &event);
3215
3216	switch (event.type)
3217	{
3218	default:
3219	break;
3220	}
3221	}
3222	/* sleep for 16ms to not burn too many cycles */
3223	RTThreadSleep(16);
3224	}
3225	return VINF_SUCCESS;
3226	}
3227	#endif // RT_OS_LINUX
3228
3229
3230	/**
3231	* Create a new 3d context
3232	*
3233	* @returns VBox status code.
3234	* @param pThisCC The VGA/VMSVGA state for ring-3.
3235	* @param cid Context id
3236	* @param fFlags VMSVGA3D_DEF_CTX_F_XXX.
3237	*/
3238	int vmsvga3dContextDefineOgl(PVGASTATECC pThisCC, uint32_t cid, uint32_t fFlags)
3239	{
3240	int rc;
3241	PVMSVGA3DCONTEXT pContext;
3242	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3243
3244	AssertReturn(pState, VERR_NO_MEMORY);
3245	AssertReturn( cid < SVGA3D_MAX_CONTEXT_IDS
3246	\|\| (cid == VMSVGA3D_SHARED_CTX_ID && (fFlags & VMSVGA3D_DEF_CTX_F_SHARED_CTX)), VERR_INVALID_PARAMETER);
3247	#if !defined(VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE) \|\| !(defined(RT_OS_DARWIN))
3248	AssertReturn(!(fFlags & VMSVGA3D_DEF_CTX_F_OTHER_PROFILE), VERR_INTERNAL_ERROR_3);
3249	#endif
3250
3251	Log(("vmsvga3dContextDefine id %x\n", cid));
3252
3253	if (cid == VMSVGA3D_SHARED_CTX_ID)
3254	pContext = &pState->SharedCtx;
3255	else
3256	{
3257	if (cid >= pState->cContexts)
3258	{
3259	/* Grow the array. */
3260	uint32_t cNew = RT_ALIGN(cid + 15, 16);
3261	void pvNew = RTMemRealloc(pState->papContexts, sizeof(pState->papContexts[0]) cNew);
3262	AssertReturn(pvNew, VERR_NO_MEMORY);
3263	pState->papContexts = (PVMSVGA3DCONTEXT *)pvNew;
3264	while (pState->cContexts < cNew)
3265	{
3266	pContext = (PVMSVGA3DCONTEXT)RTMemAllocZ(sizeof(*pContext));
3267	AssertReturn(pContext, VERR_NO_MEMORY);
3268	pContext->id = SVGA3D_INVALID_ID;
3269	pState->papContexts[pState->cContexts++] = pContext;
3270	}
3271	}
3272	/* If one already exists with this id, then destroy it now. */
3273	if (pState->papContexts[cid]->id != SVGA3D_INVALID_ID)
3274	vmsvga3dContextDestroy(pThisCC, cid);
3275
3276	pContext = pState->papContexts[cid];
3277	}
3278
3279	/*
3280	* Find or create the shared context if needed (necessary for sharing e.g. textures between contexts).
3281	*/
3282	PVMSVGA3DCONTEXT pSharedCtx = NULL;
3283	if (!(fFlags & (VMSVGA3D_DEF_CTX_F_INIT \| VMSVGA3D_DEF_CTX_F_SHARED_CTX)))
3284	{
3285	pSharedCtx = &pState->SharedCtx;
3286	if (pSharedCtx->id != VMSVGA3D_SHARED_CTX_ID)
3287	{
3288	rc = vmsvga3dContextDefineOgl(pThisCC, VMSVGA3D_SHARED_CTX_ID, VMSVGA3D_DEF_CTX_F_SHARED_CTX);
3289	AssertLogRelRCReturn(rc, rc);
3290
3291	/* Create resources which use the shared context. */
3292	vmsvga3dOnSharedContextDefine(pState);
3293	}
3294	}
3295
3296	/*
3297	* Initialize the context.
3298	*/
3299	memset(pContext, 0, sizeof(*pContext));
3300	pContext->id = cid;
3301	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); i++)
3302	pContext->aSidActiveTextures[i] = SVGA3D_INVALID_ID;
3303
3304	pContext->state.shidVertex = SVGA3D_INVALID_ID;
3305	pContext->state.shidPixel = SVGA3D_INVALID_ID;
3306	pContext->idFramebuffer = OPENGL_INVALID_ID;
3307	pContext->idReadFramebuffer = OPENGL_INVALID_ID;
3308	pContext->idDrawFramebuffer = OPENGL_INVALID_ID;
3309
3310	rc = ShaderContextCreate(&pContext->pShaderContext);
3311	AssertRCReturn(rc, rc);
3312
3313	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->state.aRenderTargets); i++)
3314	pContext->state.aRenderTargets[i] = SVGA3D_INVALID_ID;
3315
3316	#ifdef RT_OS_WINDOWS
3317	/* Create a context window with minimal 4x4 size. We will never use the swapchain
3318	* to present the rendered image. Rendered images from the guest will be copied to
3319	* the VMSVGA SCREEN object, which can be either an offscreen render target or
3320	* system memory in the guest VRAM.
3321	*/
3322	rc = vmsvga3dContextWindowCreate(pState->hInstance, pState->pWindowThread, pState->WndRequestSem, &pContext->hwnd);
3323	AssertRCReturn(rc, rc);
3324
3325	pContext->hdc = GetDC(pContext->hwnd);
3326	AssertMsgReturn(pContext->hdc, ("GetDC %x failed with %d\n", pContext->hwnd, GetLastError()), VERR_INTERNAL_ERROR);
3327
3328	PIXELFORMATDESCRIPTOR pfd = {
3329	sizeof(PIXELFORMATDESCRIPTOR), /* size of this pfd */
3330	1, /* version number */
3331	PFD_DRAW_TO_WINDOW \| /* support window */
3332	PFD_SUPPORT_OPENGL, /* support OpenGL */
3333	PFD_TYPE_RGBA, /* RGBA type */
3334	24, /* 24-bit color depth */
3335	0, 0, 0, 0, 0, 0, /* color bits ignored */
3336	8, /* alpha buffer */
3337	0, /* shift bit ignored */
3338	0, /* no accumulation buffer */
3339	0, 0, 0, 0, /* accum bits ignored */
3340	16, /* set depth buffer */
3341	16, /* set stencil buffer */
3342	0, /* no auxiliary buffer */
3343	PFD_MAIN_PLANE, /* main layer */
3344	0, /* reserved */
3345	0, 0, 0 /* layer masks ignored */
3346	};
3347	int pixelFormat;
3348	BOOL ret;
3349
3350	pixelFormat = ChoosePixelFormat(pContext->hdc, &pfd);
3351	/** @todo is this really necessary?? */
3352	pixelFormat = ChoosePixelFormat(pContext->hdc, &pfd);
3353	AssertMsgReturn(pixelFormat != 0, ("ChoosePixelFormat failed with %d\n", GetLastError()), VERR_INTERNAL_ERROR);
3354
3355	ret = SetPixelFormat(pContext->hdc, pixelFormat, &pfd);
3356	AssertMsgReturn(ret == TRUE, ("SetPixelFormat failed with %d\n", GetLastError()), VERR_INTERNAL_ERROR);
3357
3358	pContext->hglrc = wglCreateContext(pContext->hdc);
3359	AssertMsgReturn(pContext->hglrc, ("wglCreateContext %x failed with %d\n", pContext->hdc, GetLastError()), VERR_INTERNAL_ERROR);
3360
3361	if (pSharedCtx)
3362	{
3363	ret = wglShareLists(pSharedCtx->hglrc, pContext->hglrc);
3364	AssertMsg(ret == TRUE, ("wglShareLists(%p, %p) failed with %d\n", pSharedCtx->hglrc, pContext->hglrc, GetLastError()));
3365	}
3366
3367	#elif defined(RT_OS_DARWIN)
3368	pContext->fOtherProfile = RT_BOOL(fFlags & VMSVGA3D_DEF_CTX_F_OTHER_PROFILE);
3369
3370	NativeNSOpenGLContextRef pShareContext = pSharedCtx ? pSharedCtx->cocoaContext : NULL;
3371	vmsvga3dCocoaCreateViewAndContext(&pContext->cocoaView, &pContext->cocoaContext,
3372	NULL,
3373	4, 4,
3374	pShareContext, pContext->fOtherProfile);
3375
3376	#else
3377	if (pState->display == NULL)
3378	{
3379	/* get an X display and make sure we have glX 1.3 */
3380	pState->display = XOpenDisplay(0);
3381	AssertLogRelMsgReturn(pState->display, ("XOpenDisplay failed"), VERR_INTERNAL_ERROR);
3382	int glxMajor, glxMinor;
3383	Bool ret = glXQueryVersion(pState->display, &glxMajor, &glxMinor);
3384	AssertLogRelMsgReturn(ret && glxMajor == 1 && glxMinor >= 3, ("glX >=1.3 not present"), VERR_INTERNAL_ERROR);
3385	/* start our X event handling thread */
3386	rc = RTThreadCreate(&pState->pWindowThread, vmsvga3dXEventThread, pState, 0, RTTHREADTYPE_GUI, RTTHREADFLAGS_WAITABLE, "VMSVGA3DXEVENT");
3387	AssertLogRelMsgReturn(RT_SUCCESS(rc), ("Async IO Thread creation for 3d window handling failed rc=%Rrc\n", rc), rc);
3388	}
3389
3390	Window defaultRootWindow = XDefaultRootWindow(pState->display);
3391	/* Create a small 4x4 window required for GL context. */
3392	int attrib[] =
3393	{
3394	GLX_RGBA,
3395	GLX_RED_SIZE, 1,
3396	GLX_GREEN_SIZE, 1,
3397	GLX_BLUE_SIZE, 1,
3398	//GLX_ALPHA_SIZE, 1, this flips the bbos screen
3399	GLX_DOUBLEBUFFER,
3400	None
3401	};
3402	XVisualInfo *vi = glXChooseVisual(pState->display, DefaultScreen(pState->display), attrib);
3403	AssertLogRelMsgReturn(vi, ("glXChooseVisual failed"), VERR_INTERNAL_ERROR);
3404	XSetWindowAttributes swa;
3405	swa.colormap = XCreateColormap(pState->display, defaultRootWindow, vi->visual, AllocNone);
3406	AssertLogRelMsgReturn(swa.colormap, ("XCreateColormap failed"), VERR_INTERNAL_ERROR);
3407	swa.border_pixel = 0;
3408	swa.background_pixel = 0;
3409	swa.event_mask = StructureNotifyMask;
3410	unsigned long flags = CWBorderPixel \| CWBackPixel \| CWColormap \| CWEventMask;
3411	pContext->window = XCreateWindow(pState->display, defaultRootWindow,
3412	0, 0, 4, 4,
3413	0, vi->depth, InputOutput,
3414	vi->visual, flags, &swa);
3415	AssertLogRelMsgReturn(pContext->window, ("XCreateWindow failed"), VERR_INTERNAL_ERROR);
3416
3417	/* The window is hidden by default and never mapped, because we only render offscreen and never present to it. */
3418
3419	GLXContext shareContext = pSharedCtx ? pSharedCtx->glxContext : NULL;
3420	pContext->glxContext = glXCreateContext(pState->display, vi, shareContext, GL_TRUE);
3421	AssertLogRelMsgReturn(pContext->glxContext, ("glXCreateContext failed"), VERR_INTERNAL_ERROR);
3422	#endif
3423
3424	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3425
3426	/* NULL during the first PowerOn call. */
3427	if (pState->ext.glGenFramebuffers)
3428	{
3429	/* Create a framebuffer object for this context. */
3430	pState->ext.glGenFramebuffers(1, &pContext->idFramebuffer);
3431	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3432
3433	/* Bind the object to the framebuffer target. */
3434	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer);
3435	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3436
3437	/* Create read and draw framebuffer objects for this context. */
3438	pState->ext.glGenFramebuffers(1, &pContext->idReadFramebuffer);
3439	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3440
3441	pState->ext.glGenFramebuffers(1, &pContext->idDrawFramebuffer);
3442	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3443
3444	}
3445	#if 0
3446	/** @todo move to shader lib!!! */
3447	/* Clear the screen */
3448	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3449
3450	glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
3451	glClearIndex(0);
3452	glClearDepth(1);
3453	glClearStencil(0xffff);
3454	glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
3455	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
3456	glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
3457	if (pState->ext.glProvokingVertex)
3458	pState->ext.glProvokingVertex(GL_FIRST_VERTEX_CONVENTION);
3459	/** @todo move to shader lib!!! */
3460	#endif
3461	return VINF_SUCCESS;
3462	}
3463
3464	#if defined(RT_OS_LINUX)
3465	/*
3466	* HW accelerated graphics output.
3467	*/
3468
3469	/* Send a notification to the UI. */
3470	static int vmsvga3dDrvNotifyHwScreen(PVGASTATECC pThisCC, VBOX3D_NOTIFY_TYPE enmNotification,
3471	uint32_t idScreen, Pixmap pixmap, void *pvData, size_t cbData)
3472	{
3473	#if 0
3474	/* Emulates no support from frontend. */
3475	RT_NOREF(pThisCC, enmNotification, idScreen, pixmap, pvData, cbData);
3476	return VERR_NOT_SUPPORTED;
3477	#else
3478	uint8_t au8Buffer[128];
3479	AssertLogRelMsgReturn(cbData <= sizeof(au8Buffer) - sizeof(VBOX3DNOTIFY),
3480	("cbData %zu", cbData),
3481	VERR_INVALID_PARAMETER);
3482
3483	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3484	p->enmNotification = enmNotification;
3485	p->iDisplay = idScreen;
3486	p->u32Reserved = 0;
3487	p->cbData = cbData + sizeof(uint64_t);
3488	/* au8Data consists of a 64 bit pixmap handle followed by notification specific data. */
3489	AssertCompile(sizeof(pixmap) <= sizeof(uint64_t));
3490	(uint64_t )&p->au8Data[0] = (uint64_t)pixmap;
3491	memcpy(&p->au8Data[sizeof(uint64_t)], pvData, cbData);
3492
3493	int rc = pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3494	return rc;
3495	#endif
3496	}
3497
3498	static int ctxErrorHandler(Display dpy, XErrorEvent ev)
3499	{
3500	RT_NOREF(dpy);
3501	LogRel4(("VMSVGA: XError %d\n", (int)ev->error_code));
3502	return 0;
3503	}
3504
3505	/* Create a GLX pixmap as a HW accelerated screen. */
3506	static int vmsvga3dHwScreenCreate(PVMSVGA3DSTATE pState, unsigned int cWidth, unsigned int cHeight, VMSVGAHWSCREEN *p)
3507	{
3508	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3509
3510	int rc = VINF_SUCCESS;
3511
3512	/*
3513	* Create a new GL context, which will be used for copying to the screen pixmap.
3514	*/
3515
3516	/* FBConfig attributes.
3517	* Using TEXTURE_2D because Intel Mesa driver does not seem to support TEXTURE_RECTANGLE for GLX pixmaps.
3518	*/
3519	static int const aConfigAttribList[] =
3520	{
3521	// GLX_RENDER_TYPE, GLX_RGBA_BIT,
3522	// GLX_X_VISUAL_TYPE, GLX_TRUE_COLOR,
3523	// GLX_X_RENDERABLE, True, // Render to GLX pixmaps
3524	GLX_DRAWABLE_TYPE, GLX_PIXMAP_BIT, // Must support GLX pixmaps
3525	GLX_BIND_TO_TEXTURE_RGBA_EXT, True, // Must support GLX_EXT_texture_from_pixmap
3526	GLX_BIND_TO_TEXTURE_TARGETS_EXT, GLX_TEXTURE_2D_BIT_EXT, // Must support GL_TEXTURE_2D for the frontend code
3527	GLX_DOUBLEBUFFER, False, // No need for double buffering for a pixmap.
3528	GLX_RED_SIZE, 8, // True color RGB with 8 bits per channel.
3529	GLX_GREEN_SIZE, 8,
3530	GLX_BLUE_SIZE, 8,
3531	GLX_ALPHA_SIZE, 8,
3532	GLX_STENCIL_SIZE, 0, // No stencil buffer
3533	GLX_DEPTH_SIZE, 0, // No depth buffer
3534	GLX_CONFIG_CAVEAT, GLX_NONE,
3535	None
3536	};
3537
3538	/* Find a suitable FB config. */
3539	int cConfigs = 0;
3540	GLXFBConfig *paConfigs = glXChooseFBConfig(pState->display, 0, aConfigAttribList, &cConfigs);
3541	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: paConfigs %p cConfigs %d\n", (void *)paConfigs, cConfigs));
3542	if (paConfigs)
3543	{
3544	XVisualInfo *vi = NULL;
3545	int i = 0;
3546	for (; i < cConfigs; ++i)
3547	{
3548	/* Use XFree to free the data returned in the previous iteration of this loop. */
3549	if (vi)
3550	XFree(vi);
3551
3552	vi = glXGetVisualFromFBConfig(pState->display, paConfigs[i]);
3553	if (!vi)
3554	continue;
3555
3556	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: %p vid %lu screen %d depth %d r %lu g %lu b %lu clrmap %d bitsperrgb %d\n",
3557	(void *)vi->visual, vi->visualid, vi->screen, vi->depth,
3558	vi->red_mask, vi->green_mask, vi->blue_mask, vi->colormap_size, vi->bits_per_rgb));
3559
3560	/* Search for 32 bits per pixel. */
3561	if (vi->depth != 32)
3562	continue;
3563
3564	/* 8 bits per color component is enough. */
3565	if (vi->bits_per_rgb != 8)
3566	continue;
3567
3568	/* Render to pixmap. */
3569	int value = 0;
3570	glXGetFBConfigAttrib(pState->display, paConfigs[i], GLX_DRAWABLE_TYPE, &value);
3571	if (!(value & GLX_PIXMAP_BIT))
3572	continue;
3573
3574	/* Pixmap will be used as TEXTURE_2D. */
3575	glXGetFBConfigAttrib(pState->display, paConfigs[i], GLX_BIND_TO_TEXTURE_TARGETS_EXT, &value);
3576	if (!(value & GLX_TEXTURE_2D_BIT_EXT))
3577	continue;
3578
3579	/* Need to bind to a texture using GLX_EXT_texture_from_pixmap. */
3580	glXGetFBConfigAttrib(pState->display, paConfigs[i], GLX_BIND_TO_TEXTURE_RGBA_EXT, &value);
3581	if (value == 0)
3582	{
3583	glXGetFBConfigAttrib(pState->display, paConfigs[i], GLX_BIND_TO_TEXTURE_RGB_EXT, &value);
3584	if (value == 0)
3585	continue;
3586	}
3587
3588	glXGetFBConfigAttrib(pState->display, paConfigs[i], GLX_Y_INVERTED_EXT, &value);
3589	p->fYInverted = (value == 1);
3590
3591	glXGetFBConfigAttrib(pState->display, paConfigs[i], GLX_BIND_TO_MIPMAP_TEXTURE_EXT, &value);
3592	p->fMipmap = (value > 0);
3593
3594	/* This FB config can be used. */
3595	break;
3596	}
3597
3598	if (i < cConfigs)
3599	{
3600	/* Found a suitable config with index i. */
3601	p->visualid = vi->visualid;
3602
3603	Window const rootWindow = RootWindow(pState->display, vi->screen);
3604	p->pixmap = XCreatePixmap(pState->display, rootWindow, cWidth, cHeight, vi->depth);
3605	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: p->pixmap %ld\n", p->pixmap));
3606
3607	static int const aPixmapAttribList[] =
3608	{
3609	GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT,
3610	GLX_TEXTURE_FORMAT_EXT, GLX_TEXTURE_FORMAT_RGBA_EXT,
3611	GLX_MIPMAP_TEXTURE_EXT, p->fMipmap,
3612	None
3613	};
3614	p->glxpixmap = glXCreatePixmap(pState->display, paConfigs[i], p->pixmap, aPixmapAttribList);
3615	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: p->glxpixmap %ld\n", p->glxpixmap));
3616
3617	p->glxctx = glXCreateContext(pState->display, vi, pState->SharedCtx.glxContext, GL_TRUE);
3618	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: p->glxctx %p\n", (void *)p->glxctx));
3619
3620	XSync(pState->display, False);
3621	}
3622	else
3623	{
3624	/* A suitable config is not found. */
3625	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: no FBConfig\n"));
3626	rc = VERR_NOT_SUPPORTED;
3627	}
3628
3629	if (vi)
3630	XFree(vi);
3631
3632	/* "Use XFree to free the memory returned by glXChooseFBConfig." */
3633	XFree(paConfigs);
3634	}
3635	else
3636	{
3637	/* glXChooseFBConfig failed. */
3638	rc = VERR_NOT_SUPPORTED;
3639	}
3640
3641	XSetErrorHandler(oldHandler);
3642	return rc;
3643	}
3644
3645	/* Destroy a HW accelerated screen. */
3646	static void vmsvga3dHwScreenDestroy(PVMSVGA3DSTATE pState, VMSVGAHWSCREEN *p)
3647	{
3648	if (p)
3649	{
3650	LogRel4(("VMSVGA: vmsvga3dHwScreenDestroy: p->glxpixmap %ld, ctx %p\n", p->glxpixmap, (void *)p->glxctx));
3651	if (p->glxctx)
3652	{
3653	/* GLX context is changed here, so other code has to set the appropriate context again. */
3654	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3655	glXMakeCurrent(pState->display, None, NULL);
3656	glXDestroyContext(pState->display, p->glxctx);
3657	}
3658
3659	if (p->glxpixmap)
3660	glXDestroyPixmap(pState->display, p->glxpixmap);
3661
3662	if (p->pixmap)
3663	XFreePixmap(pState->display, p->pixmap);
3664
3665	RT_ZERO(*p);
3666	}
3667	}
3668
3669	#define GLCHECK() \
3670	do { \
3671	int glErr = glGetError(); \
3672	if (glErr != GL_NO_ERROR) LogRel4(("VMSVGA: GL error 0x%x @%d\n", glErr, __LINE__)); \
3673	} while(0)
3674
3675	int vmsvga3dBackDefineScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3676	{
3677	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: screen %u\n", pScreen->idScreen));
3678
3679	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3680	AssertReturn(pState, VERR_NOT_SUPPORTED);
3681
3682	Assert(pScreen->pHwScreen == NULL);
3683
3684	VMSVGAHWSCREEN p = (VMSVGAHWSCREEN )RTMemAllocZ(sizeof(VMSVGAHWSCREEN));
3685	AssertPtrReturn(p, VERR_NO_MEMORY);
3686
3687	int rc = vmsvga3dHwScreenCreate(pState, pScreen->cWidth, pScreen->cHeight, p);
3688	if (RT_SUCCESS(rc))
3689	{
3690	/*
3691	* Setup the OpenGL context of the screen.
3692	*/
3693
3694	/* GLX context is changed here, so other code has to set the appropriate context again. */
3695	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3696
3697	Bool const fSuccess = glXMakeCurrent(pState->display, p->glxpixmap, p->glxctx);
3698	if (fSuccess)
3699	{
3700	/* Work in screen coordinates. */
3701	glMatrixMode(GL_MODELVIEW);
3702	glLoadIdentity();
3703	glOrtho(0, pScreen->cWidth, 0, pScreen->cHeight, -1, 1);
3704	glMatrixMode(GL_PROJECTION);
3705	glLoadIdentity();
3706
3707	/* Set GL state. */
3708	glClearColor(0, 0, 0, 1);
3709	glEnable(GL_TEXTURE_2D);
3710	glDisable(GL_DEPTH_TEST);
3711	glDisable(GL_CULL_FACE);
3712
3713	/* Clear the pixmap. */
3714	glClear(GL_COLOR_BUFFER_BIT);
3715	glFinish();
3716
3717	glXMakeCurrent(pState->display, None, NULL);
3718
3719	rc = vmsvga3dDrvNotifyHwScreen(pThisCC, VBOX3D_NOTIFY_TYPE_HW_SCREEN_CREATED,
3720	pScreen->idScreen, p->pixmap, &p->visualid, sizeof(p->visualid));
3721	}
3722	else
3723	{
3724	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: failed to set current context\n"));
3725	rc = VERR_NOT_SUPPORTED;
3726	}
3727	}
3728
3729	if (RT_SUCCESS(rc))
3730	{
3731	pScreen->pHwScreen = p;
3732	}
3733	else
3734	{
3735	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: %Rrc\n", rc));
3736	vmsvga3dHwScreenDestroy(pState, p);
3737	RTMemFree(p);
3738	}
3739
3740	return rc;
3741	}
3742
3743	int vmsvga3dBackDestroyScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3744	{
3745	LogRel4(("VMSVGA: vmsvga3dBackDestroyScreen: screen %u\n", pScreen->idScreen));
3746
3747	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3748	AssertReturn(pState, VERR_NOT_SUPPORTED);
3749
3750	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3751
3752	VMSVGAHWSCREEN *p = pScreen->pHwScreen;
3753	if (p)
3754	{
3755	pScreen->pHwScreen = NULL;
3756
3757	vmsvga3dDrvNotifyHwScreen(pThisCC, VBOX3D_NOTIFY_TYPE_HW_SCREEN_DESTROYED,
3758	pScreen->idScreen, p->pixmap, NULL, 0);
3759
3760	vmsvga3dHwScreenDestroy(pState, p);
3761	RTMemFree(p);
3762	}
3763
3764	XSetErrorHandler(oldHandler);
3765
3766	return VINF_SUCCESS;
3767	}
3768
3769	/* Blit a surface to the GLX pixmap. */
3770	int vmsvga3dBackSurfaceBlitToScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen,
3771	SVGASignedRect destRect, SVGA3dSurfaceImageId srcImage,
3772	SVGASignedRect srcRect, uint32_t cRects, SVGASignedRect *paRects)
3773	{
3774	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3775	AssertReturn(pState, VERR_NOT_SUPPORTED);
3776
3777	VMSVGAHWSCREEN *p = pScreen->pHwScreen;
3778	AssertReturn(p, VERR_NOT_SUPPORTED);
3779
3780	PVMSVGA3DSURFACE pSurface;
3781	int rc = vmsvga3dSurfaceFromSid(pState, srcImage.sid, &pSurface);
3782	AssertRCReturn(rc, rc);
3783
3784	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface))
3785	{
3786	LogFunc(("src sid=%u flags=0x%x format=%d -> create texture\n", srcImage.sid, pSurface->surfaceFlags, pSurface->format));
3787	rc = vmsvga3dBackCreateTexture(pState, &pState->SharedCtx, VMSVGA3D_SHARED_CTX_ID, pSurface);
3788	AssertRCReturn(rc, rc);
3789	}
3790
3791	AssertReturn(pSurface->enmOGLResType == VMSVGA3D_OGLRESTYPE_TEXTURE, VERR_NOT_SUPPORTED);
3792
3793	PVMSVGA3DMIPMAPLEVEL pMipLevel;
3794	rc = vmsvga3dMipmapLevel(pSurface, srcImage.face, srcImage.mipmap, &pMipLevel);
3795	AssertRCReturn(rc, rc);
3796
3797	/** @todo Implement. */
3798	RT_NOREF(destRect, cRects, paRects);
3799
3800	/* GLX context is changed here, so other code has to set appropriate context again. */
3801	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3802
3803	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3804
3805	vmsvga3dDrvNotifyHwScreen(pThisCC, VBOX3D_NOTIFY_TYPE_HW_SCREEN_UPDATE_BEGIN, pScreen->idScreen, p->pixmap, NULL, 0);
3806
3807	GLint const w = pScreen->cWidth;
3808	GLint const h = pScreen->cHeight;
3809
3810	GLfloat const wSurf = (GLfloat)pMipLevel->mipmapSize.width;
3811	GLfloat const hSurf = (GLfloat)pMipLevel->mipmapSize.height;
3812	GLfloat const x1 = (GLfloat)srcRect.left / wSurf;
3813	GLfloat const y1 = (GLfloat)srcRect.top / hSurf;
3814	GLfloat const x2 = (GLfloat)srcRect.right / wSurf;
3815	GLfloat const y2 = (GLfloat)srcRect.bottom / hSurf;
3816
3817	//printf("blit to screen src %fx%f %u,%u %u,%u (%f,%f %f,%f) dest %dx%d %u,%u %u,%u\n",
3818	// wSurf, hSurf, srcRect.left, srcRect.top, srcRect.right, srcRect.bottom, x1, y1, x2, y2,
3819	// w, h, destRect.left, destRect.top, destRect.right, destRect.bottom);
3820
3821	Bool fSuccess = glXMakeCurrent(pState->display, p->glxpixmap, p->glxctx);
3822	if (fSuccess)
3823	{
3824	glClear(GL_COLOR_BUFFER_BIT);
3825
3826	glBindTexture(GL_TEXTURE_2D, pSurface->oglId.texture); GLCHECK();
3827
3828	glBegin(GL_QUADS);
3829	/** @todo Y inversion. */
3830	glTexCoord2f(x1, y1); glVertex2i(0, h);
3831	glTexCoord2f(x1, y2); glVertex2i(0, 0);
3832	glTexCoord2f(x2, y2); glVertex2i(w, 0);
3833	glTexCoord2f(x2, y1); glVertex2i(w, h);
3834	glEnd(); GLCHECK();
3835
3836	glBindTexture(GL_TEXTURE_2D, 0); GLCHECK();
3837
3838	glFinish(); GLCHECK();
3839
3840	glXMakeCurrent(pState->display, None, NULL);
3841
3842	vmsvga3dDrvNotifyHwScreen(pThisCC, VBOX3D_NOTIFY_TYPE_HW_SCREEN_UPDATE_END,
3843	pScreen->idScreen, p->pixmap, &destRect, sizeof(destRect));
3844	}
3845
3846	XSetErrorHandler(oldHandler);
3847
3848	return VINF_SUCCESS;
3849	}
3850
3851	#else /* !RT_OS_LINUX */
3852
3853	int vmsvga3dBackDefineScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3854	{
3855	RT_NOREF(pThisCC, pScreen);
3856	return VERR_NOT_IMPLEMENTED;
3857	}
3858
3859	int vmsvga3dBackDestroyScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3860	{
3861	RT_NOREF(pThisCC, pScreen);
3862	return VERR_NOT_IMPLEMENTED;
3863	}
3864
3865	int vmsvga3dBackSurfaceBlitToScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen,
3866	SVGASignedRect destRect, SVGA3dSurfaceImageId srcImage,
3867	SVGASignedRect srcRect, uint32_t cRects, SVGASignedRect *paRects)
3868	{
3869	RT_NOREF(pThisCC, pScreen, destRect, srcImage, srcRect, cRects, paRects);
3870	return VERR_NOT_IMPLEMENTED;
3871	}
3872	#endif
3873
3874	/**
3875	* Create a new 3d context
3876	*
3877	* @returns VBox status code.
3878	* @param pThisCC The VGA/VMSVGA state for ring-3.
3879	* @param cid Context id
3880	*/
3881	int vmsvga3dContextDefine(PVGASTATECC pThisCC, uint32_t cid)
3882	{
3883	return vmsvga3dContextDefineOgl(pThisCC, cid, 0/fFlags/);
3884	}
3885
3886	/**
3887	* Destroys a 3d context.
3888	*
3889	* @returns VBox status code.
3890	* @param pThisCC The VGA/VMSVGA state for ring-3.
3891	* @param pContext The context to destroy.
3892	* @param cid Context id
3893	*/
3894	static int vmsvga3dContextDestroyOgl(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid)
3895	{
3896	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3897	AssertReturn(pState, VERR_NO_MEMORY);
3898	AssertReturn(pContext, VERR_INVALID_PARAMETER);
3899	AssertReturn(pContext->id == cid, VERR_INVALID_PARAMETER);
3900	Log(("vmsvga3dContextDestroyOgl id %x\n", cid));
3901
3902	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3903
3904	if (pContext->id == VMSVGA3D_SHARED_CTX_ID)
3905	{
3906	/* Delete resources which use the shared context. */
3907	vmsvga3dOnSharedContextDestroy(pState);
3908	}
3909
3910	/* Destroy all leftover pixel shaders. */
3911	for (uint32_t i = 0; i < pContext->cPixelShaders; i++)
3912	{
3913	if (pContext->paPixelShader[i].id != SVGA3D_INVALID_ID)
3914	vmsvga3dShaderDestroy(pThisCC, pContext->paPixelShader[i].cid, pContext->paPixelShader[i].id, pContext->paPixelShader[i].type);
3915	}
3916	if (pContext->paPixelShader)
3917	RTMemFree(pContext->paPixelShader);
3918
3919	/* Destroy all leftover vertex shaders. */
3920	for (uint32_t i = 0; i < pContext->cVertexShaders; i++)
3921	{
3922	if (pContext->paVertexShader[i].id != SVGA3D_INVALID_ID)
3923	vmsvga3dShaderDestroy(pThisCC, pContext->paVertexShader[i].cid, pContext->paVertexShader[i].id, pContext->paVertexShader[i].type);
3924	}
3925	if (pContext->paVertexShader)
3926	RTMemFree(pContext->paVertexShader);
3927
3928	if (pContext->state.paVertexShaderConst)
3929	RTMemFree(pContext->state.paVertexShaderConst);
3930	if (pContext->state.paPixelShaderConst)
3931	RTMemFree(pContext->state.paPixelShaderConst);
3932
3933	if (pContext->pShaderContext)
3934	{
3935	int rc = ShaderContextDestroy(pContext->pShaderContext);
3936	AssertRC(rc);
3937	}
3938
3939	if (pContext->idFramebuffer != OPENGL_INVALID_ID)
3940	{
3941	/* Unbind the object from the framebuffer target. */
3942	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, 0 /* back buffer */);
3943	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3944	pState->ext.glDeleteFramebuffers(1, &pContext->idFramebuffer);
3945	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3946
3947	if (pContext->idReadFramebuffer != OPENGL_INVALID_ID)
3948	{
3949	pState->ext.glDeleteFramebuffers(1, &pContext->idReadFramebuffer);
3950	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3951	}
3952	if (pContext->idDrawFramebuffer != OPENGL_INVALID_ID)
3953	{
3954	pState->ext.glDeleteFramebuffers(1, &pContext->idDrawFramebuffer);
3955	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3956	}
3957	}
3958
3959	vmsvga3dOcclusionQueryDelete(pState, pContext);
3960
3961	#ifdef RT_OS_WINDOWS
3962	wglMakeCurrent(pContext->hdc, NULL);
3963	wglDeleteContext(pContext->hglrc);
3964	ReleaseDC(pContext->hwnd, pContext->hdc);
3965
3966	/* Destroy the window we've created. */
3967	int rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_DESTROYWINDOW, (WPARAM)pContext->hwnd, 0);
3968	AssertRC(rc);
3969	#elif defined(RT_OS_DARWIN)
3970	vmsvga3dCocoaDestroyViewAndContext(pContext->cocoaView, pContext->cocoaContext);
3971	#elif defined(RT_OS_LINUX)
3972	glXMakeCurrent(pState->display, None, NULL);
3973	glXDestroyContext(pState->display, pContext->glxContext);
3974	XDestroyWindow(pState->display, pContext->window);
3975	#endif
3976
3977	memset(pContext, 0, sizeof(*pContext));
3978	pContext->id = SVGA3D_INVALID_ID;
3979
3980	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3981	return VINF_SUCCESS;
3982	}
3983
3984	/**
3985	* Destroy an existing 3d context
3986	*
3987	* @returns VBox status code.
3988	* @param pThisCC The VGA/VMSVGA state for ring-3.
3989	* @param cid Context id
3990	*/
3991	int vmsvga3dContextDestroy(PVGASTATECC pThisCC, uint32_t cid)
3992	{
3993	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3994	AssertReturn(pState, VERR_WRONG_ORDER);
3995
3996	/*
3997	* Resolve the context and hand it to the common worker function.
3998	*/
3999	if ( cid < pState->cContexts
4000	&& pState->papContexts[cid]->id == cid)
4001	return vmsvga3dContextDestroyOgl(pThisCC, pState->papContexts[cid], cid);
4002
4003	AssertReturn(cid < SVGA3D_MAX_CONTEXT_IDS, VERR_INVALID_PARAMETER);
4004	return VINF_SUCCESS;
4005	}
4006
4007	/**
4008	* Worker for vmsvga3dChangeMode that resizes a context.
4009	*
4010	* @param pState The VMSVGA3d state.
4011	* @param pContext The context.
4012	*/
4013	static void vmsvga3dChangeModeOneContext(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
4014	{
4015	RT_NOREF(pState, pContext);
4016	/* Do nothing. The window is not used for presenting. */
4017	}
4018
4019	/* Handle resize */
4020	int vmsvga3dChangeMode(PVGASTATECC pThisCC)
4021	{
4022	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4023	AssertReturn(pState, VERR_NO_MEMORY);
4024
4025	/* Resize the shared context too. */
4026	if (pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
4027	vmsvga3dChangeModeOneContext(pState, &pState->SharedCtx);
4028
4029	/* Resize all active contexts. */
4030	for (uint32_t i = 0; i < pState->cContexts; i++)
4031	{
4032	PVMSVGA3DCONTEXT pContext = pState->papContexts[i];
4033	if (pContext->id != SVGA3D_INVALID_ID)
4034	vmsvga3dChangeModeOneContext(pState, pContext);
4035	}
4036
4037	return VINF_SUCCESS;
4038	}
4039
4040
4041	int vmsvga3dSetTransform(PVGASTATECC pThisCC, uint32_t cid, SVGA3dTransformType type, float matrix[16])
4042	{
4043	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4044	AssertReturn(pState, VERR_NO_MEMORY);
4045	bool fModelViewChanged = false;
4046
4047	Log(("vmsvga3dSetTransform cid=%u %s\n", cid, vmsvgaTransformToString(type)));
4048
4049	ASSERT_GUEST_RETURN((unsigned)type < SVGA3D_TRANSFORM_MAX, VERR_INVALID_PARAMETER);
4050
4051	PVMSVGA3DCONTEXT pContext;
4052	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4053	AssertRCReturn(rc, rc);
4054
4055	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4056
4057	/* Save this matrix for vm state save/restore. */
4058	pContext->state.aTransformState[type].fValid = true;
4059	memcpy(pContext->state.aTransformState[type].matrix, matrix, sizeof(pContext->state.aTransformState[type].matrix));
4060	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_TRANSFORM;
4061
4062	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)));
4063	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)));
4064	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)));
4065	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)));
4066
4067	switch (type)
4068	{
4069	case SVGA3D_TRANSFORM_VIEW:
4070	/* View * World = Model View */
4071	glMatrixMode(GL_MODELVIEW);
4072	glLoadMatrixf(matrix);
4073	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_WORLD].fValid)
4074	glMultMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_WORLD].matrix);
4075	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4076	fModelViewChanged = true;
4077	break;
4078
4079	case SVGA3D_TRANSFORM_PROJECTION:
4080	{
4081	rc = ShaderTransformProjection(pContext->state.RectViewPort.w, pContext->state.RectViewPort.h, matrix, false /* fPretransformed */);
4082	AssertRCReturn(rc, rc);
4083	break;
4084	}
4085
4086	case SVGA3D_TRANSFORM_TEXTURE0:
4087	glMatrixMode(GL_TEXTURE);
4088	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4089	glLoadMatrixf(matrix);
4090	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4091	break;
4092
4093	case SVGA3D_TRANSFORM_TEXTURE1:
4094	case SVGA3D_TRANSFORM_TEXTURE2:
4095	case SVGA3D_TRANSFORM_TEXTURE3:
4096	case SVGA3D_TRANSFORM_TEXTURE4:
4097	case SVGA3D_TRANSFORM_TEXTURE5:
4098	case SVGA3D_TRANSFORM_TEXTURE6:
4099	case SVGA3D_TRANSFORM_TEXTURE7:
4100	Log(("vmsvga3dSetTransform: unsupported SVGA3D_TRANSFORM_TEXTUREx transform!!\n"));
4101	return VERR_INVALID_PARAMETER;
4102
4103	case SVGA3D_TRANSFORM_WORLD:
4104	/* View * World = Model View */
4105	glMatrixMode(GL_MODELVIEW);
4106	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].fValid)
4107	glLoadMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
4108	else
4109	glLoadIdentity();
4110	glMultMatrixf(matrix);
4111	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4112	fModelViewChanged = true;
4113	break;
4114
4115	case SVGA3D_TRANSFORM_WORLD1:
4116	case SVGA3D_TRANSFORM_WORLD2:
4117	case SVGA3D_TRANSFORM_WORLD3:
4118	Log(("vmsvga3dSetTransform: unsupported SVGA3D_TRANSFORM_WORLDx transform!!\n"));
4119	return VERR_INVALID_PARAMETER;
4120
4121	default:
4122	Log(("vmsvga3dSetTransform: unknown type!!\n"));
4123	return VERR_INVALID_PARAMETER;
4124	}
4125
4126	/* Apparently we need to reset the light and clip data after modifying the modelview matrix. */
4127	if (fModelViewChanged)
4128	{
4129	/* Reprogram the clip planes. */
4130	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aClipPlane); j++)
4131	{
4132	if (pContext->state.aClipPlane[j].fValid == true)
4133	vmsvga3dSetClipPlane(pThisCC, cid, j, pContext->state.aClipPlane[j].plane);
4134	}
4135
4136	/* Reprogram the light data. */
4137	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aLightData); j++)
4138	{
4139	if (pContext->state.aLightData[j].fValidData == true)
4140	vmsvga3dSetLightData(pThisCC, cid, j, &pContext->state.aLightData[j].data);
4141	}
4142	}
4143
4144	return VINF_SUCCESS;
4145	}
4146
4147	int vmsvga3dSetZRange(PVGASTATECC pThisCC, uint32_t cid, SVGA3dZRange zRange)
4148	{
4149	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4150	AssertReturn(pState, VERR_NO_MEMORY);
4151
4152	Log(("vmsvga3dSetZRange cid=%u min=%d max=%d\n", cid, (uint32_t)(zRange.min * 100.0), (uint32_t)(zRange.max * 100.0)));
4153
4154	PVMSVGA3DCONTEXT pContext;
4155	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4156	AssertRCReturn(rc, rc);
4157
4158	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4159
4160	pContext->state.zRange = zRange;
4161	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_ZRANGE;
4162
4163	if (zRange.min < -1.0)
4164	zRange.min = -1.0;
4165	if (zRange.max > 1.0)
4166	zRange.max = 1.0;
4167
4168	glDepthRange((GLdouble)zRange.min, (GLdouble)zRange.max);
4169	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4170	return VINF_SUCCESS;
4171	}
4172
4173	/**
4174	* Convert SVGA blend op value to its OpenGL equivalent
4175	*/
4176	static GLenum vmsvga3dBlendOp2GL(uint32_t blendOp)
4177	{
4178	switch (blendOp)
4179	{
4180	case SVGA3D_BLENDOP_ZERO:
4181	return GL_ZERO;
4182	case SVGA3D_BLENDOP_ONE:
4183	return GL_ONE;
4184	case SVGA3D_BLENDOP_SRCCOLOR:
4185	return GL_SRC_COLOR;
4186	case SVGA3D_BLENDOP_INVSRCCOLOR:
4187	return GL_ONE_MINUS_SRC_COLOR;
4188	case SVGA3D_BLENDOP_SRCALPHA:
4189	return GL_SRC_ALPHA;
4190	case SVGA3D_BLENDOP_INVSRCALPHA:
4191	return GL_ONE_MINUS_SRC_ALPHA;
4192	case SVGA3D_BLENDOP_DESTALPHA:
4193	return GL_DST_ALPHA;
4194	case SVGA3D_BLENDOP_INVDESTALPHA:
4195	return GL_ONE_MINUS_DST_ALPHA;
4196	case SVGA3D_BLENDOP_DESTCOLOR:
4197	return GL_DST_COLOR;
4198	case SVGA3D_BLENDOP_INVDESTCOLOR:
4199	return GL_ONE_MINUS_DST_COLOR;
4200	case SVGA3D_BLENDOP_SRCALPHASAT:
4201	return GL_SRC_ALPHA_SATURATE;
4202	case SVGA3D_BLENDOP_BLENDFACTOR:
4203	return GL_CONSTANT_COLOR;
4204	case SVGA3D_BLENDOP_INVBLENDFACTOR:
4205	return GL_ONE_MINUS_CONSTANT_COLOR;
4206	default:
4207	AssertFailed();
4208	return GL_ONE;
4209	}
4210	}
4211
4212	static GLenum vmsvga3dBlendEquation2GL(uint32_t blendEq)
4213	{
4214	switch (blendEq)
4215	{
4216	case SVGA3D_BLENDEQ_ADD:
4217	return GL_FUNC_ADD;
4218	case SVGA3D_BLENDEQ_SUBTRACT:
4219	return GL_FUNC_SUBTRACT;
4220	case SVGA3D_BLENDEQ_REVSUBTRACT:
4221	return GL_FUNC_REVERSE_SUBTRACT;
4222	case SVGA3D_BLENDEQ_MINIMUM:
4223	return GL_MIN;
4224	case SVGA3D_BLENDEQ_MAXIMUM:
4225	return GL_MAX;
4226	default:
4227	/* SVGA3D_BLENDEQ_INVALID means that the render state has not been set, therefore use default. */
4228	AssertMsg(blendEq == SVGA3D_BLENDEQ_INVALID, ("blendEq=%d (%#x)\n", blendEq, blendEq));
4229	return GL_FUNC_ADD;
4230	}
4231	}
4232
4233	static GLenum vmsvgaCmpFunc2GL(uint32_t cmpFunc)
4234	{
4235	switch (cmpFunc)
4236	{
4237	case SVGA3D_CMP_NEVER:
4238	return GL_NEVER;
4239	case SVGA3D_CMP_LESS:
4240	return GL_LESS;
4241	case SVGA3D_CMP_EQUAL:
4242	return GL_EQUAL;
4243	case SVGA3D_CMP_LESSEQUAL:
4244	return GL_LEQUAL;
4245	case SVGA3D_CMP_GREATER:
4246	return GL_GREATER;
4247	case SVGA3D_CMP_NOTEQUAL:
4248	return GL_NOTEQUAL;
4249	case SVGA3D_CMP_GREATEREQUAL:
4250	return GL_GEQUAL;
4251	case SVGA3D_CMP_ALWAYS:
4252	return GL_ALWAYS;
4253	default:
4254	Assert(cmpFunc == SVGA3D_CMP_INVALID);
4255	return GL_LESS;
4256	}
4257	}
4258
4259	static GLenum vmsvgaStencipOp2GL(uint32_t stencilOp)
4260	{
4261	switch (stencilOp)
4262	{
4263	case SVGA3D_STENCILOP_KEEP:
4264	return GL_KEEP;
4265	case SVGA3D_STENCILOP_ZERO:
4266	return GL_ZERO;
4267	case SVGA3D_STENCILOP_REPLACE:
4268	return GL_REPLACE;
4269	case SVGA3D_STENCILOP_INCRSAT:
4270	return GL_INCR_WRAP;
4271	case SVGA3D_STENCILOP_DECRSAT:
4272	return GL_DECR_WRAP;
4273	case SVGA3D_STENCILOP_INVERT:
4274	return GL_INVERT;
4275	case SVGA3D_STENCILOP_INCR:
4276	return GL_INCR;
4277	case SVGA3D_STENCILOP_DECR:
4278	return GL_DECR;
4279	default:
4280	Assert(stencilOp == SVGA3D_STENCILOP_INVALID);
4281	return GL_KEEP;
4282	}
4283	}
4284
4285	int vmsvga3dSetRenderState(PVGASTATECC pThisCC, uint32_t cid, uint32_t cRenderStates, SVGA3dRenderState *pRenderState)
4286	{
4287	uint32_t val = UINT32_MAX; /* Shut up MSC. */
4288	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4289	AssertReturn(pState, VERR_NO_MEMORY);
4290
4291	Log(("vmsvga3dSetRenderState cid=%u cRenderStates=%d\n", cid, cRenderStates));
4292
4293	PVMSVGA3DCONTEXT pContext;
4294	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4295	AssertRCReturn(rc, rc);
4296
4297	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4298
4299	for (unsigned i = 0; i < cRenderStates; i++)
4300	{
4301	GLenum enableCap = ~(GLenum)0;
4302	Log(("vmsvga3dSetRenderState: cid=%u state=%s (%d) val=%x\n", cid, vmsvga3dGetRenderStateName(pRenderState[i].state), pRenderState[i].state, pRenderState[i].uintValue));
4303	/* Save the render state for vm state saving. */
4304	ASSERT_GUEST_RETURN((unsigned)pRenderState[i].state < SVGA3D_RS_MAX, VERR_INVALID_PARAMETER);
4305	pContext->state.aRenderState[pRenderState[i].state] = pRenderState[i];
4306
4307	switch (pRenderState[i].state)
4308	{
4309	case SVGA3D_RS_ZENABLE: /* SVGA3dBool */
4310	enableCap = GL_DEPTH_TEST;
4311	val = pRenderState[i].uintValue;
4312	break;
4313
4314	case SVGA3D_RS_ZWRITEENABLE: /* SVGA3dBool */
4315	glDepthMask(!!pRenderState[i].uintValue);
4316	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4317	break;
4318
4319	case SVGA3D_RS_ALPHATESTENABLE: /* SVGA3dBool */
4320	enableCap = GL_ALPHA_TEST;
4321	val = pRenderState[i].uintValue;
4322	break;
4323
4324	case SVGA3D_RS_DITHERENABLE: /* SVGA3dBool */
4325	enableCap = GL_DITHER;
4326	val = pRenderState[i].uintValue;
4327	break;
4328
4329	case SVGA3D_RS_FOGENABLE: /* SVGA3dBool */
4330	enableCap = GL_FOG;
4331	val = pRenderState[i].uintValue;
4332	break;
4333
4334	case SVGA3D_RS_SPECULARENABLE: /* SVGA3dBool */
4335	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4336	break;
4337
4338	case SVGA3D_RS_LIGHTINGENABLE: /* SVGA3dBool */
4339	enableCap = GL_LIGHTING;
4340	val = pRenderState[i].uintValue;
4341	break;
4342
4343	case SVGA3D_RS_NORMALIZENORMALS: /* SVGA3dBool */
4344	/* not applicable */
4345	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4346	break;
4347
4348	case SVGA3D_RS_POINTSPRITEENABLE: /* SVGA3dBool */
4349	enableCap = GL_POINT_SPRITE_ARB;
4350	val = pRenderState[i].uintValue;
4351	break;
4352
4353	case SVGA3D_RS_POINTSIZE: /* float */
4354	/** @todo we need to apply scaling for point sizes below the min or above the max; see Wine) */
4355	if (pRenderState[i].floatValue < pState->caps.flPointSize[0])
4356	pRenderState[i].floatValue = pState->caps.flPointSize[0];
4357	if (pRenderState[i].floatValue > pState->caps.flPointSize[1])
4358	pRenderState[i].floatValue = pState->caps.flPointSize[1];
4359
4360	glPointSize(pRenderState[i].floatValue);
4361	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4362	Log(("SVGA3D_RS_POINTSIZE: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4363	break;
4364
4365	case SVGA3D_RS_POINTSIZEMIN: /* float */
4366	pState->ext.glPointParameterf(GL_POINT_SIZE_MIN, pRenderState[i].floatValue);
4367	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4368	Log(("SVGA3D_RS_POINTSIZEMIN: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4369	break;
4370
4371	case SVGA3D_RS_POINTSIZEMAX: /* float */
4372	pState->ext.glPointParameterf(GL_POINT_SIZE_MAX, pRenderState[i].floatValue);
4373	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4374	Log(("SVGA3D_RS_POINTSIZEMAX: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4375	break;
4376
4377	case SVGA3D_RS_POINTSCALEENABLE: /* SVGA3dBool */
4378	case SVGA3D_RS_POINTSCALE_A: /* float */
4379	case SVGA3D_RS_POINTSCALE_B: /* float */
4380	case SVGA3D_RS_POINTSCALE_C: /* float */
4381	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4382	break;
4383
4384	case SVGA3D_RS_AMBIENT: /* SVGA3dColor */
4385	{
4386	GLfloat color[4]; /* red, green, blue, alpha */
4387
4388	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &color[0], &color[1], &color[2], &color[3]);
4389
4390	glLightModelfv(GL_LIGHT_MODEL_AMBIENT, color);
4391	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4392	break;
4393	}
4394
4395	case SVGA3D_RS_CLIPPLANEENABLE: /* SVGA3dClipPlanes */
4396	{
4397	AssertCompile(SVGA3D_CLIPPLANE_MAX == (1 << 5));
4398	for (uint32_t j = 0; j <= 5; j++)
4399	{
4400	if (pRenderState[i].uintValue & RT_BIT(j))
4401	glEnable(GL_CLIP_PLANE0 + j);
4402	else
4403	glDisable(GL_CLIP_PLANE0 + j);
4404	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4405	}
4406	break;
4407	}
4408
4409	case SVGA3D_RS_FOGCOLOR: /* SVGA3dColor */
4410	{
4411	GLfloat color[4]; /* red, green, blue, alpha */
4412
4413	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &color[0], &color[1], &color[2], &color[3]);
4414
4415	glFogfv(GL_FOG_COLOR, color);
4416	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4417	break;
4418	}
4419
4420	case SVGA3D_RS_FOGSTART: /* float */
4421	glFogf(GL_FOG_START, pRenderState[i].floatValue);
4422	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4423	break;
4424
4425	case SVGA3D_RS_FOGEND: /* float */
4426	glFogf(GL_FOG_END, pRenderState[i].floatValue);
4427	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4428	break;
4429
4430	case SVGA3D_RS_FOGDENSITY: /* float */
4431	glFogf(GL_FOG_DENSITY, pRenderState[i].floatValue);
4432	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4433	break;
4434
4435	case SVGA3D_RS_RANGEFOGENABLE: /* SVGA3dBool */
4436	glFogi(GL_FOG_COORD_SRC, (pRenderState[i].uintValue) ? GL_FOG_COORD : GL_FRAGMENT_DEPTH);
4437	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4438	break;
4439
4440	case SVGA3D_RS_FOGMODE: /* SVGA3dFogMode */
4441	{
4442	SVGA3dFogMode mode;
4443	mode.uintValue = pRenderState[i].uintValue;
4444
4445	enableCap = GL_FOG_MODE;
4446	switch (mode.s.function)
4447	{
4448	case SVGA3D_FOGFUNC_EXP:
4449	val = GL_EXP;
4450	break;
4451	case SVGA3D_FOGFUNC_EXP2:
4452	val = GL_EXP2;
4453	break;
4454	case SVGA3D_FOGFUNC_LINEAR:
4455	val = GL_LINEAR;
4456	break;
4457	default:
4458	AssertMsgFailedReturn(("Unexpected fog function %d\n", mode.s.function), VERR_INTERNAL_ERROR);
4459	break;
4460	}
4461
4462	/** @todo how to switch between vertex and pixel fog modes??? */
4463	Assert(mode.s.type == SVGA3D_FOGTYPE_PIXEL);
4464	#if 0
4465	/* The fog type determines the render state. */
4466	switch (mode.s.type)
4467	{
4468	case SVGA3D_FOGTYPE_VERTEX:
4469	renderState = D3DRS_FOGVERTEXMODE;
4470	break;
4471	case SVGA3D_FOGTYPE_PIXEL:
4472	renderState = D3DRS_FOGTABLEMODE;
4473	break;
4474	default:
4475	AssertMsgFailedReturn(("Unexpected fog type %d\n", mode.s.type), VERR_INTERNAL_ERROR);
4476	break;
4477	}
4478	#endif
4479
4480	/* Set the fog base to depth or range. */
4481	switch (mode.s.base)
4482	{
4483	case SVGA3D_FOGBASE_DEPTHBASED:
4484	glFogi(GL_FOG_COORD_SRC, GL_FRAGMENT_DEPTH);
4485	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4486	break;
4487	case SVGA3D_FOGBASE_RANGEBASED:
4488	glFogi(GL_FOG_COORD_SRC, GL_FOG_COORD);
4489	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4490	break;
4491	default:
4492	/* ignore */
4493	AssertMsgFailed(("Unexpected fog base %d\n", mode.s.base));
4494	break;
4495	}
4496	break;
4497	}
4498
4499	case SVGA3D_RS_FILLMODE: /* SVGA3dFillMode */
4500	{
4501	SVGA3dFillMode mode;
4502
4503	mode.uintValue = pRenderState[i].uintValue;
4504
4505	switch (mode.s.mode)
4506	{
4507	case SVGA3D_FILLMODE_POINT:
4508	val = GL_POINT;
4509	break;
4510	case SVGA3D_FILLMODE_LINE:
4511	val = GL_LINE;
4512	break;
4513	case SVGA3D_FILLMODE_FILL:
4514	val = GL_FILL;
4515	break;
4516	default:
4517	AssertMsgFailedReturn(("Unexpected fill mode %d\n", mode.s.mode), VERR_INTERNAL_ERROR);
4518	break;
4519	}
4520	/* @note only front and back faces */
4521	Assert(mode.s.face == SVGA3D_FACE_FRONT_BACK);
4522	glPolygonMode(GL_FRONT_AND_BACK, val);
4523	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4524	break;
4525	}
4526
4527	case SVGA3D_RS_SHADEMODE: /* SVGA3dShadeMode */
4528	switch (pRenderState[i].uintValue)
4529	{
4530	case SVGA3D_SHADEMODE_FLAT:
4531	val = GL_FLAT;
4532	break;
4533
4534	case SVGA3D_SHADEMODE_SMOOTH:
4535	val = GL_SMOOTH;
4536	break;
4537
4538	default:
4539	AssertMsgFailedReturn(("Unexpected shade mode %d\n", pRenderState[i].uintValue), VERR_INTERNAL_ERROR);
4540	break;
4541	}
4542
4543	glShadeModel(val);
4544	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4545	break;
4546
4547	case SVGA3D_RS_LINEPATTERN: /* SVGA3dLinePattern */
4548	/* No longer supported by d3d; mesagl comments suggest not all backends support it */
4549	/** @todo */
4550	Log(("WARNING: SVGA3D_RS_LINEPATTERN %x not supported!!\n", pRenderState[i].uintValue));
4551	/*
4552	renderState = D3DRS_LINEPATTERN;
4553	val = pRenderState[i].uintValue;
4554	*/
4555	break;
4556
4557	case SVGA3D_RS_LINEAA: /* SVGA3dBool */
4558	enableCap = GL_LINE_SMOOTH;
4559	val = pRenderState[i].uintValue;
4560	break;
4561
4562	case SVGA3D_RS_LINEWIDTH: /* float */
4563	glLineWidth(pRenderState[i].floatValue);
4564	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4565	break;
4566
4567	case SVGA3D_RS_SEPARATEALPHABLENDENABLE: /* SVGA3dBool */
4568	{
4569	/* Refresh the blending state based on the new enable setting.
4570	* This will take existing states and set them using either glBlend* or glBlend*Separate.
4571	*/
4572	static SVGA3dRenderStateName const saRefreshState[] =
4573	{
4574	SVGA3D_RS_SRCBLEND,
4575	SVGA3D_RS_BLENDEQUATION
4576	};
4577	SVGA3dRenderState renderstate[RT_ELEMENTS(saRefreshState)];
4578	for (uint32_t j = 0; j < RT_ELEMENTS(saRefreshState); ++j)
4579	{
4580	renderstate[j].state = saRefreshState[j];
4581	renderstate[j].uintValue = pContext->state.aRenderState[saRefreshState[j]].uintValue;
4582	}
4583
4584	rc = vmsvga3dSetRenderState(pThisCC, cid, 2, renderstate);
4585	AssertRCReturn(rc, rc);
4586
4587	if (pContext->state.aRenderState[SVGA3D_RS_BLENDENABLE].uintValue != 0)
4588	continue; /* Ignore if blend is enabled */
4589	/* Apply SVGA3D_RS_SEPARATEALPHABLENDENABLE as SVGA3D_RS_BLENDENABLE */
4590	} RT_FALL_THRU();
4591
4592	case SVGA3D_RS_BLENDENABLE: /* SVGA3dBool */
4593	enableCap = GL_BLEND;
4594	val = pRenderState[i].uintValue;
4595	break;
4596
4597	case SVGA3D_RS_SRCBLENDALPHA: /* SVGA3dBlendOp */
4598	case SVGA3D_RS_DSTBLENDALPHA: /* SVGA3dBlendOp */
4599	case SVGA3D_RS_SRCBLEND: /* SVGA3dBlendOp */
4600	case SVGA3D_RS_DSTBLEND: /* SVGA3dBlendOp */
4601	{
4602	GLint srcRGB, srcAlpha, dstRGB, dstAlpha;
4603	GLint blendop = vmsvga3dBlendOp2GL(pRenderState[i].uintValue);
4604
4605	glGetIntegerv(GL_BLEND_SRC_RGB, &srcRGB);
4606	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4607	glGetIntegerv(GL_BLEND_DST_RGB, &dstRGB);
4608	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4609	glGetIntegerv(GL_BLEND_DST_ALPHA, &dstAlpha);
4610	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4611	glGetIntegerv(GL_BLEND_SRC_ALPHA, &srcAlpha);
4612	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4613
4614	switch (pRenderState[i].state)
4615	{
4616	case SVGA3D_RS_SRCBLEND:
4617	srcRGB = blendop;
4618	break;
4619	case SVGA3D_RS_DSTBLEND:
4620	dstRGB = blendop;
4621	break;
4622	case SVGA3D_RS_SRCBLENDALPHA:
4623	srcAlpha = blendop;
4624	break;
4625	case SVGA3D_RS_DSTBLENDALPHA:
4626	dstAlpha = blendop;
4627	break;
4628	default:
4629	/* not possible; shut up gcc */
4630	AssertFailed();
4631	break;
4632	}
4633
4634	if (pContext->state.aRenderState[SVGA3D_RS_SEPARATEALPHABLENDENABLE].uintValue != 0)
4635	pState->ext.glBlendFuncSeparate(srcRGB, dstRGB, srcAlpha, dstAlpha);
4636	else
4637	glBlendFunc(srcRGB, dstRGB);
4638	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4639	break;
4640	}
4641
4642	case SVGA3D_RS_BLENDEQUATIONALPHA: /* SVGA3dBlendEquation */
4643	case SVGA3D_RS_BLENDEQUATION: /* SVGA3dBlendEquation */
4644	if (pContext->state.aRenderState[SVGA3D_RS_SEPARATEALPHABLENDENABLE].uintValue != 0)
4645	{
4646	GLenum const modeRGB = vmsvga3dBlendEquation2GL(pContext->state.aRenderState[SVGA3D_RS_BLENDEQUATION].uintValue);
4647	GLenum const modeAlpha = vmsvga3dBlendEquation2GL(pContext->state.aRenderState[SVGA3D_RS_BLENDEQUATIONALPHA].uintValue);
4648	pState->ext.glBlendEquationSeparate(modeRGB, modeAlpha);
4649	}
4650	else
4651	{
4652	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x102
4653	glBlendEquation(vmsvga3dBlendEquation2GL(pRenderState[i].uintValue));
4654	#else
4655	pState->ext.glBlendEquation(vmsvga3dBlendEquation2GL(pRenderState[i].uintValue));
4656	#endif
4657	}
4658	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4659	break;
4660
4661	case SVGA3D_RS_BLENDCOLOR: /* SVGA3dColor */
4662	{
4663	GLfloat red, green, blue, alpha;
4664
4665	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &red, &green, &blue, &alpha);
4666
4667	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x102
4668	glBlendColor(red, green, blue, alpha);
4669	#else
4670	pState->ext.glBlendColor(red, green, blue, alpha);
4671	#endif
4672	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4673	break;
4674	}
4675
4676	case SVGA3D_RS_CULLMODE: /* SVGA3dFace */
4677	{
4678	GLenum mode = GL_BACK; /* default for OpenGL */
4679
4680	switch (pRenderState[i].uintValue)
4681	{
4682	case SVGA3D_FACE_NONE:
4683	break;
4684	case SVGA3D_FACE_FRONT:
4685	mode = GL_FRONT;
4686	break;
4687	case SVGA3D_FACE_BACK:
4688	mode = GL_BACK;
4689	break;
4690	case SVGA3D_FACE_FRONT_BACK:
4691	mode = GL_FRONT_AND_BACK;
4692	break;
4693	default:
4694	AssertMsgFailedReturn(("Unexpected cull mode %d\n", pRenderState[i].uintValue), VERR_INTERNAL_ERROR);
4695	break;
4696	}
4697	enableCap = GL_CULL_FACE;
4698	if (pRenderState[i].uintValue != SVGA3D_FACE_NONE)
4699	{
4700	glCullFace(mode);
4701	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4702	val = 1;
4703	}
4704	else
4705	val = 0;
4706	break;
4707	}
4708
4709	case SVGA3D_RS_ZFUNC: /* SVGA3dCmpFunc */
4710	glDepthFunc(vmsvgaCmpFunc2GL(pRenderState[i].uintValue));
4711	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4712	break;
4713
4714	case SVGA3D_RS_ALPHAFUNC: /* SVGA3dCmpFunc */
4715	{
4716	GLclampf ref;
4717
4718	glGetFloatv(GL_ALPHA_TEST_REF, &ref);
4719	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4720	glAlphaFunc(vmsvgaCmpFunc2GL(pRenderState[i].uintValue), ref);
4721	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4722	break;
4723	}
4724
4725	case SVGA3D_RS_ALPHAREF: /* float (0.0 .. 1.0) */
4726	{
4727	GLint func;
4728
4729	glGetIntegerv(GL_ALPHA_TEST_FUNC, &func);
4730	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4731	glAlphaFunc(func, pRenderState[i].floatValue);
4732	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4733	break;
4734	}
4735
4736	case SVGA3D_RS_STENCILENABLE2SIDED: /* SVGA3dBool */
4737	{
4738	/* Refresh the stencil state based on the new enable setting.
4739	* This will take existing states and set them using either glStencil or glStencil*Separate.
4740	*/
4741	static SVGA3dRenderStateName const saRefreshState[] =
4742	{
4743	SVGA3D_RS_STENCILFUNC,
4744	SVGA3D_RS_STENCILFAIL,
4745	SVGA3D_RS_CCWSTENCILFUNC,
4746	SVGA3D_RS_CCWSTENCILFAIL
4747	};
4748	SVGA3dRenderState renderstate[RT_ELEMENTS(saRefreshState)];
4749	for (uint32_t j = 0; j < RT_ELEMENTS(saRefreshState); ++j)
4750	{
4751	renderstate[j].state = saRefreshState[j];
4752	renderstate[j].uintValue = pContext->state.aRenderState[saRefreshState[j]].uintValue;
4753	}
4754
4755	rc = vmsvga3dSetRenderState(pThisCC, cid, RT_ELEMENTS(renderstate), renderstate);
4756	AssertRCReturn(rc, rc);
4757
4758	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE].uintValue != 0)
4759	continue; /* Ignore if stencil is enabled */
4760	/* Apply SVGA3D_RS_STENCILENABLE2SIDED as SVGA3D_RS_STENCILENABLE. */
4761	} RT_FALL_THRU();
4762
4763	case SVGA3D_RS_STENCILENABLE: /* SVGA3dBool */
4764	enableCap = GL_STENCIL_TEST;
4765	val = pRenderState[i].uintValue;
4766	break;
4767
4768	case SVGA3D_RS_STENCILFUNC: /* SVGA3dCmpFunc */
4769	case SVGA3D_RS_STENCILREF: /* uint32_t */
4770	case SVGA3D_RS_STENCILMASK: /* uint32_t */
4771	{
4772	GLint func, ref;
4773	GLuint mask;
4774
4775	/* Query current values to have all parameters for glStencilFunc[Separate]. */
4776	glGetIntegerv(GL_STENCIL_FUNC, &func);
4777	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4778	glGetIntegerv(GL_STENCIL_VALUE_MASK, (GLint *)&mask);
4779	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4780	glGetIntegerv(GL_STENCIL_REF, &ref);
4781	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4782
4783	/* Update the changed value. */
4784	switch (pRenderState[i].state)
4785	{
4786	case SVGA3D_RS_STENCILFUNC: /* SVGA3dCmpFunc */
4787	func = vmsvgaCmpFunc2GL(pRenderState[i].uintValue);
4788	break;
4789
4790	case SVGA3D_RS_STENCILREF: /* uint32_t */
4791	ref = pRenderState[i].uintValue;
4792	break;
4793
4794	case SVGA3D_RS_STENCILMASK: /* uint32_t */
4795	mask = pRenderState[i].uintValue;
4796	break;
4797
4798	default:
4799	/* not possible; shut up gcc */
4800	AssertFailed();
4801	break;
4802	}
4803
4804	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE2SIDED].uintValue != 0)
4805	{
4806	pState->ext.glStencilFuncSeparate(GL_FRONT, func, ref, mask);
4807	}
4808	else
4809	{
4810	glStencilFunc(func, ref, mask);
4811	}
4812	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4813	break;
4814	}
4815
4816	case SVGA3D_RS_STENCILWRITEMASK: /* uint32_t */
4817	glStencilMask(pRenderState[i].uintValue);
4818	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4819	break;
4820
4821	case SVGA3D_RS_STENCILFAIL: /* SVGA3dStencilOp */
4822	case SVGA3D_RS_STENCILZFAIL: /* SVGA3dStencilOp */
4823	case SVGA3D_RS_STENCILPASS: /* SVGA3dStencilOp */
4824	{
4825	GLint sfail, dpfail, dppass;
4826	GLenum const stencilop = vmsvgaStencipOp2GL(pRenderState[i].uintValue);
4827
4828	glGetIntegerv(GL_STENCIL_FAIL, &sfail);
4829	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4830	glGetIntegerv(GL_STENCIL_PASS_DEPTH_FAIL, &dpfail);
4831	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4832	glGetIntegerv(GL_STENCIL_PASS_DEPTH_PASS, &dppass);
4833	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4834
4835	switch (pRenderState[i].state)
4836	{
4837	case SVGA3D_RS_STENCILFAIL: /* SVGA3dStencilOp */
4838	sfail = stencilop;
4839	break;
4840	case SVGA3D_RS_STENCILZFAIL: /* SVGA3dStencilOp */
4841	dpfail = stencilop;
4842	break;
4843	case SVGA3D_RS_STENCILPASS: /* SVGA3dStencilOp */
4844	dppass = stencilop;
4845	break;
4846	default:
4847	/* not possible; shut up gcc */
4848	AssertFailed();
4849	break;
4850	}
4851	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE2SIDED].uintValue != 0)
4852	{
4853	pState->ext.glStencilOpSeparate(GL_FRONT, sfail, dpfail, dppass);
4854	}
4855	else
4856	{
4857	glStencilOp(sfail, dpfail, dppass);
4858	}
4859	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4860	break;
4861	}
4862
4863	case SVGA3D_RS_CCWSTENCILFUNC: /* SVGA3dCmpFunc */
4864	{
4865	GLint ref;
4866	GLuint mask;
4867	GLint const func = vmsvgaCmpFunc2GL(pRenderState[i].uintValue);
4868
4869	/* GL_STENCIL_VALUE_MASK and GL_STENCIL_REF are the same for both GL_FRONT and GL_BACK. */
4870	glGetIntegerv(GL_STENCIL_VALUE_MASK, (GLint *)&mask);
4871	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4872	glGetIntegerv(GL_STENCIL_REF, &ref);
4873	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4874
4875	pState->ext.glStencilFuncSeparate(GL_BACK, func, ref, mask);
4876	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4877	break;
4878	}
4879
4880	case SVGA3D_RS_CCWSTENCILFAIL: /* SVGA3dStencilOp */
4881	case SVGA3D_RS_CCWSTENCILZFAIL: /* SVGA3dStencilOp */
4882	case SVGA3D_RS_CCWSTENCILPASS: /* SVGA3dStencilOp */
4883	{
4884	GLint sfail, dpfail, dppass;
4885	GLenum const stencilop = vmsvgaStencipOp2GL(pRenderState[i].uintValue);
4886
4887	glGetIntegerv(GL_STENCIL_BACK_FAIL, &sfail);
4888	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4889	glGetIntegerv(GL_STENCIL_BACK_PASS_DEPTH_FAIL, &dpfail);
4890	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4891	glGetIntegerv(GL_STENCIL_BACK_PASS_DEPTH_PASS, &dppass);
4892	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4893
4894	switch (pRenderState[i].state)
4895	{
4896	case SVGA3D_RS_CCWSTENCILFAIL: /* SVGA3dStencilOp */
4897	sfail = stencilop;
4898	break;
4899	case SVGA3D_RS_CCWSTENCILZFAIL: /* SVGA3dStencilOp */
4900	dpfail = stencilop;
4901	break;
4902	case SVGA3D_RS_CCWSTENCILPASS: /* SVGA3dStencilOp */
4903	dppass = stencilop;
4904	break;
4905	default:
4906	/* not possible; shut up gcc */
4907	AssertFailed();
4908	break;
4909	}
4910	pState->ext.glStencilOpSeparate(GL_BACK, sfail, dpfail, dppass);
4911	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4912	break;
4913	}
4914
4915	case SVGA3D_RS_ZBIAS: /* float */
4916	/** @todo unknown meaning; depth bias is not identical
4917	renderState = D3DRS_DEPTHBIAS;
4918	val = pRenderState[i].uintValue;
4919	*/
4920	Log(("vmsvga3dSetRenderState: WARNING unsupported SVGA3D_RS_ZBIAS\n"));
4921	break;
4922
4923	case SVGA3D_RS_DEPTHBIAS: /* float */
4924	{
4925	GLfloat factor;
4926
4927	/** @todo not sure if the d3d & ogl definitions are identical. */
4928
4929	/* Do not change the factor part. */
4930	glGetFloatv(GL_POLYGON_OFFSET_FACTOR, &factor);
4931	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4932
4933	glPolygonOffset(factor, pRenderState[i].floatValue);
4934	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4935	break;
4936	}
4937
4938	case SVGA3D_RS_SLOPESCALEDEPTHBIAS: /* float */
4939	{
4940	GLfloat units;
4941
4942	/** @todo not sure if the d3d & ogl definitions are identical. */
4943
4944	/* Do not change the factor part. */
4945	glGetFloatv(GL_POLYGON_OFFSET_UNITS, &units);
4946	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4947
4948	glPolygonOffset(pRenderState[i].floatValue, units);
4949	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4950	break;
4951	}
4952
4953	case SVGA3D_RS_COLORWRITEENABLE: /* SVGA3dColorMask */
4954	{
4955	GLboolean red, green, blue, alpha;
4956	SVGA3dColorMask mask;
4957
4958	mask.uintValue = pRenderState[i].uintValue;
4959
4960	red = mask.s.red;
4961	green = mask.s.green;
4962	blue = mask.s.blue;
4963	alpha = mask.s.alpha;
4964
4965	glColorMask(red, green, blue, alpha);
4966	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4967	break;
4968	}
4969
4970	case SVGA3D_RS_COLORWRITEENABLE1: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
4971	case SVGA3D_RS_COLORWRITEENABLE2: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
4972	case SVGA3D_RS_COLORWRITEENABLE3: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
4973	Log(("vmsvga3dSetRenderState: WARNING SVGA3D_RS_COLORWRITEENABLEx not supported!!\n"));
4974	break;
4975
4976	case SVGA3D_RS_SCISSORTESTENABLE: /* SVGA3dBool */
4977	enableCap = GL_SCISSOR_TEST;
4978	val = pRenderState[i].uintValue;
4979	break;
4980
4981	#if 0
4982	case SVGA3D_RS_DIFFUSEMATERIALSOURCE: /* SVGA3dVertexMaterial */
4983	AssertCompile(D3DMCS_COLOR2 == SVGA3D_VERTEXMATERIAL_SPECULAR);
4984	renderState = D3DRS_DIFFUSEMATERIALSOURCE;
4985	val = pRenderState[i].uintValue;
4986	break;
4987
4988	case SVGA3D_RS_SPECULARMATERIALSOURCE: /* SVGA3dVertexMaterial */
4989	renderState = D3DRS_SPECULARMATERIALSOURCE;
4990	val = pRenderState[i].uintValue;
4991	break;
4992
4993	case SVGA3D_RS_AMBIENTMATERIALSOURCE: /* SVGA3dVertexMaterial */
4994	renderState = D3DRS_AMBIENTMATERIALSOURCE;
4995	val = pRenderState[i].uintValue;
4996	break;
4997
4998	case SVGA3D_RS_EMISSIVEMATERIALSOURCE: /* SVGA3dVertexMaterial */
4999	renderState = D3DRS_EMISSIVEMATERIALSOURCE;
5000	val = pRenderState[i].uintValue;
5001	break;
5002	#endif
5003
5004	case SVGA3D_RS_WRAP3: /* SVGA3dWrapFlags */
5005	case SVGA3D_RS_WRAP4: /* SVGA3dWrapFlags */
5006	case SVGA3D_RS_WRAP5: /* SVGA3dWrapFlags */
5007	case SVGA3D_RS_WRAP6: /* SVGA3dWrapFlags */
5008	case SVGA3D_RS_WRAP7: /* SVGA3dWrapFlags */
5009	case SVGA3D_RS_WRAP8: /* SVGA3dWrapFlags */
5010	case SVGA3D_RS_WRAP9: /* SVGA3dWrapFlags */
5011	case SVGA3D_RS_WRAP10: /* SVGA3dWrapFlags */
5012	case SVGA3D_RS_WRAP11: /* SVGA3dWrapFlags */
5013	case SVGA3D_RS_WRAP12: /* SVGA3dWrapFlags */
5014	case SVGA3D_RS_WRAP13: /* SVGA3dWrapFlags */
5015	case SVGA3D_RS_WRAP14: /* SVGA3dWrapFlags */
5016	case SVGA3D_RS_WRAP15: /* SVGA3dWrapFlags */
5017	Log(("vmsvga3dSetRenderState: WARNING unsupported SVGA3D_WRAPx (x >= 3)\n"));
5018	break;
5019
5020	case SVGA3D_RS_LASTPIXEL: /* SVGA3dBool */
5021	case SVGA3D_RS_TWEENFACTOR: /* float */
5022	case SVGA3D_RS_INDEXEDVERTEXBLENDENABLE: /* SVGA3dBool */
5023	case SVGA3D_RS_VERTEXBLEND: /* SVGA3dVertexBlendFlags */
5024	Log(("vmsvga3dSetRenderState: WARNING not applicable!!\n"));
5025	break;
5026
5027	case SVGA3D_RS_MULTISAMPLEANTIALIAS: /* SVGA3dBool */
5028	enableCap = GL_MULTISAMPLE;
5029	val = pRenderState[i].uintValue;
5030	break;
5031
5032	case SVGA3D_RS_MULTISAMPLEMASK: /* uint32_t */
5033	case SVGA3D_RS_ANTIALIASEDLINEENABLE: /* SVGA3dBool */
5034	Log(("vmsvga3dSetRenderState: WARNING not applicable??!!\n"));
5035	break;
5036
5037	case SVGA3D_RS_COORDINATETYPE: /* SVGA3dCoordinateType */
5038	Assert(pRenderState[i].uintValue == SVGA3D_COORDINATE_LEFTHANDED);
5039	/** @todo setup a view matrix to scale the world space by -1 in the z-direction for right handed coordinates. */
5040	/*
5041	renderState = D3DRS_COORDINATETYPE;
5042	val = pRenderState[i].uintValue;
5043	*/
5044	break;
5045
5046	case SVGA3D_RS_FRONTWINDING: /* SVGA3dFrontWinding */
5047	Assert(pRenderState[i].uintValue == SVGA3D_FRONTWINDING_CW);
5048	/* Invert the selected mode because of y-inversion (?) */
5049	glFrontFace((pRenderState[i].uintValue != SVGA3D_FRONTWINDING_CW) ? GL_CW : GL_CCW);
5050	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5051	break;
5052
5053	case SVGA3D_RS_OUTPUTGAMMA: /* float */
5054	//AssertFailed();
5055	/*
5056	D3DRS_SRGBWRITEENABLE ??
5057	renderState = D3DRS_OUTPUTGAMMA;
5058	val = pRenderState[i].uintValue;
5059	*/
5060	break;
5061
5062	#if 0
5063
5064	case SVGA3D_RS_VERTEXMATERIALENABLE: /* SVGA3dBool */
5065	//AssertFailed();
5066	renderState = D3DRS_INDEXEDVERTEXBLENDENABLE; /* correct?? */
5067	val = pRenderState[i].uintValue;
5068	break;
5069
5070	case SVGA3D_RS_TEXTUREFACTOR: /* SVGA3dColor */
5071	renderState = D3DRS_TEXTUREFACTOR;
5072	val = pRenderState[i].uintValue;
5073	break;
5074
5075	case SVGA3D_RS_LOCALVIEWER: /* SVGA3dBool */
5076	renderState = D3DRS_LOCALVIEWER;
5077	val = pRenderState[i].uintValue;
5078	break;
5079
5080	case SVGA3D_RS_ZVISIBLE: /* SVGA3dBool */
5081	AssertFailed();
5082	/*
5083	renderState = D3DRS_ZVISIBLE;
5084	val = pRenderState[i].uintValue;
5085	*/
5086	break;
5087
5088	case SVGA3D_RS_CLIPPING: /* SVGA3dBool */
5089	renderState = D3DRS_CLIPPING;
5090	val = pRenderState[i].uintValue;
5091	break;
5092
5093	case SVGA3D_RS_WRAP0: /* SVGA3dWrapFlags */
5094	glTexParameter GL_TEXTURE_WRAP_S
5095	Assert(SVGA3D_WRAPCOORD_3 == D3DWRAPCOORD_3);
5096	renderState = D3DRS_WRAP0;
5097	val = pRenderState[i].uintValue;
5098	break;
5099
5100	case SVGA3D_RS_WRAP1: /* SVGA3dWrapFlags */
5101	glTexParameter GL_TEXTURE_WRAP_T
5102	renderState = D3DRS_WRAP1;
5103	val = pRenderState[i].uintValue;
5104	break;
5105
5106	case SVGA3D_RS_WRAP2: /* SVGA3dWrapFlags */
5107	glTexParameter GL_TEXTURE_WRAP_R
5108	renderState = D3DRS_WRAP2;
5109	val = pRenderState[i].uintValue;
5110	break;
5111
5112
5113	case SVGA3D_RS_SEPARATEALPHABLENDENABLE: /* SVGA3dBool */
5114	renderState = D3DRS_SEPARATEALPHABLENDENABLE;
5115	val = pRenderState[i].uintValue;
5116	break;
5117
5118
5119	case SVGA3D_RS_BLENDEQUATIONALPHA: /* SVGA3dBlendEquation */
5120	renderState = D3DRS_BLENDOPALPHA;
5121	val = pRenderState[i].uintValue;
5122	break;
5123
5124	case SVGA3D_RS_TRANSPARENCYANTIALIAS: /* SVGA3dTransparencyAntialiasType */
5125	AssertFailed();
5126	/*
5127	renderState = D3DRS_TRANSPARENCYANTIALIAS;
5128	val = pRenderState[i].uintValue;
5129	*/
5130	break;
5131
5132	#endif
5133	default:
5134	AssertFailed();
5135	break;
5136	}
5137
5138	if (enableCap != ~(GLenum)0)
5139	{
5140	if (val)
5141	glEnable(enableCap);
5142	else
5143	glDisable(enableCap);
5144	}
5145	}
5146
5147	return VINF_SUCCESS;
5148	}
5149
5150	int vmsvga3dSetRenderTarget(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRenderTargetType type, SVGA3dSurfaceImageId target)
5151	{
5152	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5153
5154	AssertReturn(pState, VERR_NO_MEMORY);
5155	AssertReturn((unsigned)type < SVGA3D_RT_MAX, VERR_INVALID_PARAMETER);
5156
5157	LogFunc(("cid=%u type=%x sid=%u\n", cid, type, target.sid));
5158
5159	PVMSVGA3DCONTEXT pContext;
5160	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5161	AssertRCReturn(rc, rc);
5162
5163	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5164
5165	/* Save for vm state save/restore. */
5166	pContext->state.aRenderTargets[type] = target.sid;
5167
5168	if (target.sid == SVGA3D_INVALID_ID)
5169	{
5170	/* Disable render target. */
5171	switch (type)
5172	{
5173	case SVGA3D_RT_DEPTH:
5174	case SVGA3D_RT_STENCIL:
5175	pState->ext.glFramebufferRenderbuffer(GL_FRAMEBUFFER, (type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
5176	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5177	break;
5178
5179	case SVGA3D_RT_COLOR0:
5180	case SVGA3D_RT_COLOR1:
5181	case SVGA3D_RT_COLOR2:
5182	case SVGA3D_RT_COLOR3:
5183	case SVGA3D_RT_COLOR4:
5184	case SVGA3D_RT_COLOR5:
5185	case SVGA3D_RT_COLOR6:
5186	case SVGA3D_RT_COLOR7:
5187	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + type - SVGA3D_RT_COLOR0, 0, 0, 0);
5188	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5189	break;
5190
5191	default:
5192	AssertFailedReturn(VERR_INVALID_PARAMETER);
5193	}
5194	return VINF_SUCCESS;
5195	}
5196
5197	PVMSVGA3DSURFACE pRenderTarget;
5198	rc = vmsvga3dSurfaceFromSid(pState, target.sid, &pRenderTarget);
5199	AssertRCReturn(rc, rc);
5200
5201	switch (type)
5202	{
5203	case SVGA3D_RT_DEPTH:
5204	case SVGA3D_RT_STENCIL:
5205	#if 1
5206	/* A texture surface can be used as a render target to fill it and later on used as a texture. */
5207	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5208	{
5209	LogFunc(("create depth texture to be used as render target; surface id=%x type=%d format=%d -> create texture\n",
5210	target.sid, pRenderTarget->surfaceFlags, pRenderTarget->format));
5211	rc = vmsvga3dBackCreateTexture(pState, pContext, cid, pRenderTarget);
5212	AssertRCReturn(rc, rc);
5213	}
5214
5215	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5216	Assert(!pRenderTarget->fDirty);
5217
5218	pRenderTarget->surfaceFlags \|= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
5219
5220	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER,
5221	(type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT,
5222	GL_TEXTURE_2D, pRenderTarget->oglId.texture, target.mipmap);
5223	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5224	#else
5225	AssertReturn(target.mipmap == 0, VERR_INVALID_PARAMETER);
5226	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5227	{
5228	Log(("vmsvga3dSetRenderTarget: create renderbuffer to be used as render target; surface id=%x type=%d format=%d\n", target.sid, pRenderTarget->surfaceFlags, pRenderTarget->internalFormatGL));
5229	pContext = &pState->SharedCtx;
5230	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5231
5232	pState->ext.glGenRenderbuffers(1, &pRenderTarget->oglId.renderbuffer);
5233	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5234	pSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_RENDERBUFFER;
5235
5236	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5237	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5238
5239	pState->ext.glRenderbufferStorage(GL_RENDERBUFFER,
5240	pRenderTarget->internalFormatGL,
5241	pRenderTarget->paMipmapLevels[0].mipmapSize.width,
5242	pRenderTarget->paMipmapLevels[0].mipmapSize.height);
5243	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5244
5245	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, OPENGL_INVALID_ID);
5246	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5247
5248	pContext = pState->papContexts[cid];
5249	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5250	pRenderTarget->idWeakContextAssociation = cid;
5251	}
5252
5253	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5254	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5255	Assert(!pRenderTarget->fDirty);
5256	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5257
5258	pRenderTarget->surfaceFlags \|= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
5259
5260	pState->ext.glFramebufferRenderbuffer(GL_FRAMEBUFFER,
5261	(type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT,
5262	GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5263	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5264	#endif
5265	break;
5266
5267	case SVGA3D_RT_COLOR0:
5268	case SVGA3D_RT_COLOR1:
5269	case SVGA3D_RT_COLOR2:
5270	case SVGA3D_RT_COLOR3:
5271	case SVGA3D_RT_COLOR4:
5272	case SVGA3D_RT_COLOR5:
5273	case SVGA3D_RT_COLOR6:
5274	case SVGA3D_RT_COLOR7:
5275	{
5276	/* A texture surface can be used as a render target to fill it and later on used as a texture. */
5277	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5278	{
5279	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));
5280	rc = vmsvga3dBackCreateTexture(pState, pContext, cid, pRenderTarget);
5281	AssertRCReturn(rc, rc);
5282	}
5283
5284	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5285	Assert(!pRenderTarget->fDirty);
5286
5287	pRenderTarget->surfaceFlags \|= SVGA3D_SURFACE_HINT_RENDERTARGET;
5288
5289	GLenum textarget;
5290	if (pRenderTarget->surfaceFlags & SVGA3D_SURFACE_CUBEMAP)
5291	textarget = vmsvga3dCubemapFaceFromIndex(target.face);
5292	else
5293	textarget = GL_TEXTURE_2D;
5294	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + type - SVGA3D_RT_COLOR0,
5295	textarget, pRenderTarget->oglId.texture, target.mipmap);
5296	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5297
5298	#ifdef DEBUG
5299	GLenum status = pState->ext.glCheckFramebufferStatus(GL_FRAMEBUFFER);
5300	if (status != GL_FRAMEBUFFER_COMPLETE)
5301	Log(("vmsvga3dSetRenderTarget: WARNING: glCheckFramebufferStatus returned %x\n", status));
5302	#endif
5303	/** @todo use glDrawBuffers too? */
5304	break;
5305	}
5306
5307	default:
5308	AssertFailedReturn(VERR_INVALID_PARAMETER);
5309	}
5310
5311	return VINF_SUCCESS;
5312	}
5313
5314	#if 0
5315	/**
5316	* Convert SVGA texture combiner value to its D3D equivalent
5317	*/
5318	static DWORD vmsvga3dTextureCombiner2D3D(uint32_t value)
5319	{
5320	switch (value)
5321	{
5322	case SVGA3D_TC_DISABLE:
5323	return D3DTOP_DISABLE;
5324	case SVGA3D_TC_SELECTARG1:
5325	return D3DTOP_SELECTARG1;
5326	case SVGA3D_TC_SELECTARG2:
5327	return D3DTOP_SELECTARG2;
5328	case SVGA3D_TC_MODULATE:
5329	return D3DTOP_MODULATE;
5330	case SVGA3D_TC_ADD:
5331	return D3DTOP_ADD;
5332	case SVGA3D_TC_ADDSIGNED:
5333	return D3DTOP_ADDSIGNED;
5334	case SVGA3D_TC_SUBTRACT:
5335	return D3DTOP_SUBTRACT;
5336	case SVGA3D_TC_BLENDTEXTUREALPHA:
5337	return D3DTOP_BLENDTEXTUREALPHA;
5338	case SVGA3D_TC_BLENDDIFFUSEALPHA:
5339	return D3DTOP_BLENDDIFFUSEALPHA;
5340	case SVGA3D_TC_BLENDCURRENTALPHA:
5341	return D3DTOP_BLENDCURRENTALPHA;
5342	case SVGA3D_TC_BLENDFACTORALPHA:
5343	return D3DTOP_BLENDFACTORALPHA;
5344	case SVGA3D_TC_MODULATE2X:
5345	return D3DTOP_MODULATE2X;
5346	case SVGA3D_TC_MODULATE4X:
5347	return D3DTOP_MODULATE4X;
5348	case SVGA3D_TC_DSDT:
5349	AssertFailed(); /** @todo ??? */
5350	return D3DTOP_DISABLE;
5351	case SVGA3D_TC_DOTPRODUCT3:
5352	return D3DTOP_DOTPRODUCT3;
5353	case SVGA3D_TC_BLENDTEXTUREALPHAPM:
5354	return D3DTOP_BLENDTEXTUREALPHAPM;
5355	case SVGA3D_TC_ADDSIGNED2X:
5356	return D3DTOP_ADDSIGNED2X;
5357	case SVGA3D_TC_ADDSMOOTH:
5358	return D3DTOP_ADDSMOOTH;
5359	case SVGA3D_TC_PREMODULATE:
5360	return D3DTOP_PREMODULATE;
5361	case SVGA3D_TC_MODULATEALPHA_ADDCOLOR:
5362	return D3DTOP_MODULATEALPHA_ADDCOLOR;
5363	case SVGA3D_TC_MODULATECOLOR_ADDALPHA:
5364	return D3DTOP_MODULATECOLOR_ADDALPHA;
5365	case SVGA3D_TC_MODULATEINVALPHA_ADDCOLOR:
5366	return D3DTOP_MODULATEINVALPHA_ADDCOLOR;
5367	case SVGA3D_TC_MODULATEINVCOLOR_ADDALPHA:
5368	return D3DTOP_MODULATEINVCOLOR_ADDALPHA;
5369	case SVGA3D_TC_BUMPENVMAPLUMINANCE:
5370	return D3DTOP_BUMPENVMAPLUMINANCE;
5371	case SVGA3D_TC_MULTIPLYADD:
5372	return D3DTOP_MULTIPLYADD;
5373	case SVGA3D_TC_LERP:
5374	return D3DTOP_LERP;
5375	default:
5376	AssertFailed();
5377	return D3DTOP_DISABLE;
5378	}
5379	}
5380
5381	/**
5382	* Convert SVGA texture arg data value to its D3D equivalent
5383	*/
5384	static DWORD vmsvga3dTextureArgData2D3D(uint32_t value)
5385	{
5386	switch (value)
5387	{
5388	case SVGA3D_TA_CONSTANT:
5389	return D3DTA_CONSTANT;
5390	case SVGA3D_TA_PREVIOUS:
5391	return D3DTA_CURRENT; /* current = previous */
5392	case SVGA3D_TA_DIFFUSE:
5393	return D3DTA_DIFFUSE;
5394	case SVGA3D_TA_TEXTURE:
5395	return D3DTA_TEXTURE;
5396	case SVGA3D_TA_SPECULAR:
5397	return D3DTA_SPECULAR;
5398	default:
5399	AssertFailed();
5400	return 0;
5401	}
5402	}
5403
5404	/**
5405	* Convert SVGA texture transform flag value to its D3D equivalent
5406	*/
5407	static DWORD vmsvga3dTextTransformFlags2D3D(uint32_t value)
5408	{
5409	switch (value)
5410	{
5411	case SVGA3D_TEX_TRANSFORM_OFF:
5412	return D3DTTFF_DISABLE;
5413	case SVGA3D_TEX_TRANSFORM_S:
5414	return D3DTTFF_COUNT1; /** @todo correct? */
5415	case SVGA3D_TEX_TRANSFORM_T:
5416	return D3DTTFF_COUNT2; /** @todo correct? */
5417	case SVGA3D_TEX_TRANSFORM_R:
5418	return D3DTTFF_COUNT3; /** @todo correct? */
5419	case SVGA3D_TEX_TRANSFORM_Q:
5420	return D3DTTFF_COUNT4; /** @todo correct? */
5421	case SVGA3D_TEX_PROJECTED:
5422	return D3DTTFF_PROJECTED;
5423	default:
5424	AssertFailed();
5425	return 0;
5426	}
5427	}
5428	#endif
5429
5430	static GLenum vmsvga3dTextureAddress2OGL(SVGA3dTextureAddress value)
5431	{
5432	switch (value)
5433	{
5434	case SVGA3D_TEX_ADDRESS_WRAP:
5435	return GL_REPEAT;
5436	case SVGA3D_TEX_ADDRESS_MIRROR:
5437	return GL_MIRRORED_REPEAT;
5438	case SVGA3D_TEX_ADDRESS_CLAMP:
5439	return GL_CLAMP_TO_EDGE;
5440	case SVGA3D_TEX_ADDRESS_BORDER:
5441	return GL_CLAMP_TO_BORDER;
5442	case SVGA3D_TEX_ADDRESS_MIRRORONCE:
5443	AssertFailed();
5444	return GL_CLAMP_TO_EDGE_SGIS; /** @todo correct? */
5445
5446	case SVGA3D_TEX_ADDRESS_EDGE:
5447	case SVGA3D_TEX_ADDRESS_INVALID:
5448	default:
5449	AssertFailed();
5450	return GL_REPEAT; /* default */
5451	}
5452	}
5453
5454	static GLenum vmsvga3dTextureFilter2OGL(SVGA3dTextureFilter value)
5455	{
5456	switch (value)
5457	{
5458	case SVGA3D_TEX_FILTER_NONE:
5459	case SVGA3D_TEX_FILTER_LINEAR:
5460	case SVGA3D_TEX_FILTER_ANISOTROPIC: /* Anisotropic filtering is controlled by SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL */
5461	return GL_LINEAR;
5462	case SVGA3D_TEX_FILTER_NEAREST:
5463	return GL_NEAREST;
5464	case SVGA3D_TEX_FILTER_FLATCUBIC: // Deprecated, not implemented
5465	case SVGA3D_TEX_FILTER_GAUSSIANCUBIC: // Deprecated, not implemented
5466	case SVGA3D_TEX_FILTER_PYRAMIDALQUAD: // Not currently implemented
5467	case SVGA3D_TEX_FILTER_GAUSSIANQUAD: // Not currently implemented
5468	default:
5469	AssertFailed();
5470	return GL_LINEAR; /* default */
5471	}
5472	}
5473
5474	uint32_t vmsvga3dSVGA3dColor2RGBA(SVGA3dColor value)
5475	{
5476	/* flip the red and blue bytes */
5477	uint8_t blue = value & 0xff;
5478	uint8_t red = (value >> 16) & 0xff;
5479	return (value & 0xff00ff00) \| red \| (blue << 16);
5480	}
5481
5482	int vmsvga3dSetTextureState(PVGASTATECC pThisCC, uint32_t cid, uint32_t cTextureStates, SVGA3dTextureState *pTextureState)
5483	{
5484	GLenum val = ~(GLenum)0; /* Shut up MSC. */
5485	GLenum currentStage = ~(GLenum)0;
5486	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5487	AssertReturn(pState, VERR_NO_MEMORY);
5488
5489	Log(("vmsvga3dSetTextureState %x cTextureState=%d\n", cid, cTextureStates));
5490
5491	PVMSVGA3DCONTEXT pContext;
5492	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5493	AssertRCReturn(rc, rc);
5494
5495	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5496
5497	/* Which texture is active for the current stage. Needed to use right OpenGL target when setting parameters. */
5498	PVMSVGA3DSURFACE pCurrentTextureSurface = NULL;
5499
5500	for (uint32_t i = 0; i < cTextureStates; ++i)
5501	{
5502	GLenum textureType = ~(GLenum)0;
5503	#if 0
5504	GLenum samplerType = ~(GLenum)0;
5505	#endif
5506
5507	LogFunc(("cid=%u stage=%d type=%s (%x) val=%x\n",
5508	cid, pTextureState[i].stage, vmsvga3dTextureStateToString(pTextureState[i].name), pTextureState[i].name, pTextureState[i].value));
5509
5510	/* Record the texture state for vm state saving. */
5511	if ( pTextureState[i].stage < RT_ELEMENTS(pContext->state.aTextureStates)
5512	&& (unsigned)pTextureState[i].name < RT_ELEMENTS(pContext->state.aTextureStates[0]))
5513	{
5514	pContext->state.aTextureStates[pTextureState[i].stage][pTextureState[i].name] = pTextureState[i];
5515	}
5516
5517	/* Activate the right texture unit for subsequent texture state changes. */
5518	if (pTextureState[i].stage != currentStage \|\| i == 0)
5519	{
5520	/** @todo Is this the appropriate limit for all kinds of textures? It is the
5521	* size of aSidActiveTextures and for binding/unbinding we cannot exceed it. */
5522	if (pTextureState[i].stage < RT_ELEMENTS(pContext->state.aTextureStates))
5523	{
5524	pState->ext.glActiveTexture(GL_TEXTURE0 + pTextureState[i].stage);
5525	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5526	currentStage = pTextureState[i].stage;
5527	}
5528	else
5529	{
5530	AssertMsgFailed(("pTextureState[%d].stage=%#x name=%#x\n", i, pTextureState[i].stage, pTextureState[i].name));
5531	continue;
5532	}
5533
5534	if (pContext->aSidActiveTextures[currentStage] != SVGA3D_INVALID_ID)
5535	{
5536	rc = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[currentStage], &pCurrentTextureSurface);
5537	AssertRCReturn(rc, rc);
5538	}
5539	else
5540	pCurrentTextureSurface = NULL; /* Make sure that no stale pointer is used. */
5541	}
5542
5543	switch (pTextureState[i].name)
5544	{
5545	case SVGA3D_TS_BUMPENVMAT00: /* float */
5546	case SVGA3D_TS_BUMPENVMAT01: /* float */
5547	case SVGA3D_TS_BUMPENVMAT10: /* float */
5548	case SVGA3D_TS_BUMPENVMAT11: /* float */
5549	case SVGA3D_TS_BUMPENVLSCALE: /* float */
5550	case SVGA3D_TS_BUMPENVLOFFSET: /* float */
5551	Log(("vmsvga3dSetTextureState: bump mapping texture options not supported!!\n"));
5552	break;
5553
5554	case SVGA3D_TS_COLOROP: /* SVGA3dTextureCombiner */
5555	case SVGA3D_TS_COLORARG0: /* SVGA3dTextureArgData */
5556	case SVGA3D_TS_COLORARG1: /* SVGA3dTextureArgData */
5557	case SVGA3D_TS_COLORARG2: /* SVGA3dTextureArgData */
5558	case SVGA3D_TS_ALPHAOP: /* SVGA3dTextureCombiner */
5559	case SVGA3D_TS_ALPHAARG0: /* SVGA3dTextureArgData */
5560	case SVGA3D_TS_ALPHAARG1: /* SVGA3dTextureArgData */
5561	case SVGA3D_TS_ALPHAARG2: /* SVGA3dTextureArgData */
5562	/** @todo not used by MesaGL */
5563	Log(("vmsvga3dSetTextureState: colorop/alphaop not yet supported!!\n"));
5564	break;
5565	#if 0
5566
5567	case SVGA3D_TS_TEXCOORDINDEX: /* uint32_t */
5568	textureType = D3DTSS_TEXCOORDINDEX;
5569	val = pTextureState[i].value;
5570	break;
5571
5572	case SVGA3D_TS_TEXTURETRANSFORMFLAGS: /* SVGA3dTexTransformFlags */
5573	textureType = D3DTSS_TEXTURETRANSFORMFLAGS;
5574	val = vmsvga3dTextTransformFlags2D3D(pTextureState[i].value);
5575	break;
5576	#endif
5577
5578	case SVGA3D_TS_BIND_TEXTURE: /* SVGA3dSurfaceId */
5579	{
5580	uint32_t const sid = pTextureState[i].value;
5581
5582	Log(("SVGA3D_TS_BIND_TEXTURE: stage %d, texture sid=%u replacing sid=%u\n",
5583	currentStage, sid, pContext->aSidActiveTextures[currentStage]));
5584
5585	/* Only if texture actually changed. */ /// @todo needs testing.
5586	if (pContext->aSidActiveTextures[currentStage] != sid)
5587	{
5588	if (pCurrentTextureSurface)
5589	{
5590	/* Unselect the currently associated texture. */
5591	glBindTexture(pCurrentTextureSurface->targetGL, 0);
5592	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5593
5594	if (currentStage < 8)
5595	{
5596	/* Necessary for the fixed pipeline. */
5597	glDisable(pCurrentTextureSurface->targetGL);
5598	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5599	}
5600
5601	pCurrentTextureSurface = NULL;
5602	}
5603
5604	if (sid == SVGA3D_INVALID_ID)
5605	{
5606	Assert(pCurrentTextureSurface == NULL);
5607	}
5608	else
5609	{
5610	PVMSVGA3DSURFACE pSurface;
5611	rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
5612	AssertRCReturn(rc, rc);
5613
5614	Log(("SVGA3D_TS_BIND_TEXTURE: stage %d, texture sid=%u (%d,%d) replacing sid=%u\n",
5615	currentStage, sid, pSurface->paMipmapLevels[0].mipmapSize.width,
5616	pSurface->paMipmapLevels[0].mipmapSize.height, pContext->aSidActiveTextures[currentStage]));
5617
5618	if (pSurface->oglId.texture == OPENGL_INVALID_ID)
5619	{
5620	Log(("CreateTexture (%d,%d) levels=%d\n",
5621	pSurface->paMipmapLevels[0].mipmapSize.width, pSurface->paMipmapLevels[0].mipmapSize.height, pSurface->faces[0].numMipLevels));
5622	rc = vmsvga3dBackCreateTexture(pState, pContext, cid, pSurface);
5623	AssertRCReturn(rc, rc);
5624	}
5625
5626	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
5627	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5628
5629	if (currentStage < 8)
5630	{
5631	/* Necessary for the fixed pipeline. */
5632	glEnable(pSurface->targetGL);
5633	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5634	}
5635
5636	/* Remember the currently active texture. */
5637	pCurrentTextureSurface = pSurface;
5638
5639	/* Recreate the texture state as glBindTexture resets them all (sigh). */
5640	for (uint32_t iStage = 0; iStage < RT_ELEMENTS(pContext->state.aTextureStates); iStage++)
5641	{
5642	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aTextureStates[0]); j++)
5643	{
5644	SVGA3dTextureState *pTextureStateIter = &pContext->state.aTextureStates[iStage][j];
5645
5646	if ( pTextureStateIter->name != SVGA3D_TS_INVALID
5647	&& pTextureStateIter->name != SVGA3D_TS_BIND_TEXTURE)
5648	vmsvga3dSetTextureState(pThisCC, pContext->id, 1, pTextureStateIter);
5649	}
5650	}
5651	}
5652
5653	pContext->aSidActiveTextures[currentStage] = sid;
5654	}
5655
5656	/* Finished; continue with the next one. */
5657	continue;
5658	}
5659
5660	case SVGA3D_TS_ADDRESSW: /* SVGA3dTextureAddress */
5661	textureType = GL_TEXTURE_WRAP_R; /* R = W */
5662	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5663	break;
5664
5665	case SVGA3D_TS_ADDRESSU: /* SVGA3dTextureAddress */
5666	textureType = GL_TEXTURE_WRAP_S; /* S = U */
5667	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5668	break;
5669
5670	case SVGA3D_TS_ADDRESSV: /* SVGA3dTextureAddress */
5671	textureType = GL_TEXTURE_WRAP_T; /* T = V */
5672	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5673	break;
5674
5675	case SVGA3D_TS_MIPFILTER: /* SVGA3dTextureFilter */
5676	case SVGA3D_TS_MINFILTER: /* SVGA3dTextureFilter */
5677	{
5678	uint32_t mipFilter = pContext->state.aTextureStates[currentStage][SVGA3D_TS_MIPFILTER].value;
5679	uint32_t minFilter = pContext->state.aTextureStates[currentStage][SVGA3D_TS_MINFILTER].value;
5680
5681	/* If SVGA3D_TS_MIPFILTER is set to NONE, then use SVGA3D_TS_MIPFILTER, otherwise SVGA3D_TS_MIPFILTER enables mipmap minification. */
5682	textureType = GL_TEXTURE_MIN_FILTER;
5683	if (mipFilter != SVGA3D_TEX_FILTER_NONE)
5684	{
5685	if (minFilter == SVGA3D_TEX_FILTER_NEAREST)
5686	{
5687	if (mipFilter == SVGA3D_TEX_FILTER_LINEAR)
5688	val = GL_NEAREST_MIPMAP_LINEAR;
5689	else
5690	val = GL_NEAREST_MIPMAP_NEAREST;
5691	}
5692	else
5693	{
5694	if (mipFilter == SVGA3D_TEX_FILTER_LINEAR)
5695	val = GL_LINEAR_MIPMAP_LINEAR;
5696	else
5697	val = GL_LINEAR_MIPMAP_NEAREST;
5698	}
5699	}
5700	else
5701	val = vmsvga3dTextureFilter2OGL((SVGA3dTextureFilter)minFilter);
5702	break;
5703	}
5704
5705	case SVGA3D_TS_MAGFILTER: /* SVGA3dTextureFilter */
5706	textureType = GL_TEXTURE_MAG_FILTER;
5707	val = vmsvga3dTextureFilter2OGL((SVGA3dTextureFilter)pTextureState[i].value);
5708	Assert(val == GL_NEAREST \|\| val == GL_LINEAR);
5709	break;
5710
5711	case SVGA3D_TS_BORDERCOLOR: /* SVGA3dColor */
5712	{
5713	GLfloat color[4]; /* red, green, blue, alpha */
5714	vmsvgaColor2GLFloatArray(pTextureState[i].value, &color[0], &color[1], &color[2], &color[3]);
5715
5716	GLenum targetGL;
5717	if (pCurrentTextureSurface)
5718	targetGL = pCurrentTextureSurface->targetGL;
5719	else
5720	{
5721	/* No texture bound, assume 2D. */
5722	targetGL = GL_TEXTURE_2D;
5723	}
5724
5725	glTexParameterfv(targetGL, GL_TEXTURE_BORDER_COLOR, color); /* Identical; default 0.0 identical too */
5726	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5727	break;
5728	}
5729
5730	case SVGA3D_TS_TEXTURE_LOD_BIAS: /* float */
5731	{
5732	GLenum targetGL;
5733	if (pCurrentTextureSurface)
5734	targetGL = pCurrentTextureSurface->targetGL;
5735	else
5736	{
5737	/* No texture bound, assume 2D. */
5738	targetGL = GL_TEXTURE_2D;
5739	}
5740
5741	glTexParameterf(targetGL, GL_TEXTURE_LOD_BIAS, pTextureState[i].floatValue); /* Identical; default 0.0 identical too */
5742	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5743	break;
5744	}
5745
5746	case SVGA3D_TS_TEXTURE_MIPMAP_LEVEL: /* uint32_t */
5747	textureType = GL_TEXTURE_BASE_LEVEL;
5748	val = pTextureState[i].value;
5749	break;
5750
5751	case SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL: /* uint32_t */
5752	if (pState->caps.fTextureFilterAnisotropicSupported)
5753	{
5754	textureType = GL_TEXTURE_MAX_ANISOTROPY_EXT;
5755	val = RT_MIN((GLint)pTextureState[i].value, pState->caps.maxTextureAnisotropy);
5756	} /* otherwise ignore. */
5757	break;
5758
5759	#if 0
5760	case SVGA3D_TS_GAMMA: /* float */
5761	samplerType = D3DSAMP_SRGBTEXTURE;
5762	/* Boolean in D3D */
5763	if (pTextureState[i].floatValue == 1.0f)
5764	val = FALSE;
5765	else
5766	val = TRUE;
5767	break;
5768	#endif
5769	/* Internal commands, that don't map directly to the SetTextureStageState API. */
5770	case SVGA3D_TS_TEXCOORDGEN: /* SVGA3dTextureCoordGen */
5771	AssertFailed();
5772	break;
5773
5774	default:
5775	//AssertFailed();
5776	break;
5777	}
5778
5779	if (textureType != ~(GLenum)0)
5780	{
5781	GLenum targetGL;
5782	if (pCurrentTextureSurface)
5783	targetGL = pCurrentTextureSurface->targetGL;
5784	else
5785	{
5786	/* No texture bound, assume 2D. */
5787	targetGL = GL_TEXTURE_2D;
5788	}
5789
5790	switch (pTextureState[i].name)
5791	{
5792	case SVGA3D_TS_MINFILTER:
5793	case SVGA3D_TS_MAGFILTER:
5794	{
5795	if (pState->caps.fTextureFilterAnisotropicSupported)
5796	{
5797	uint32_t const anisotropyLevel = (SVGA3dTextureFilter)pTextureState[i].value == SVGA3D_TEX_FILTER_ANISOTROPIC
5798	? RT_MAX(1, pContext->state.aTextureStates[currentStage][SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL].value)
5799	: 1;
5800	glTexParameteri(targetGL, GL_TEXTURE_MAX_ANISOTROPY_EXT, RT_MIN((GLint)anisotropyLevel, pState->caps.maxTextureAnisotropy));
5801	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5802	}
5803	} break;
5804
5805	default: break;
5806	}
5807
5808	glTexParameteri(targetGL, textureType, val);
5809	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5810	}
5811	}
5812
5813	return VINF_SUCCESS;
5814	}
5815
5816	int vmsvga3dSetMaterial(PVGASTATECC pThisCC, uint32_t cid, SVGA3dFace face, SVGA3dMaterial *pMaterial)
5817	{
5818	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5819	AssertReturn(pState, VERR_NO_MEMORY);
5820
5821	LogFunc(("cid=%u face %d\n", cid, face));
5822
5823	PVMSVGA3DCONTEXT pContext;
5824	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5825	AssertRCReturn(rc, rc);
5826
5827	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5828
5829	GLenum oglFace;
5830	switch (face)
5831	{
5832	case SVGA3D_FACE_NONE:
5833	case SVGA3D_FACE_FRONT:
5834	oglFace = GL_FRONT;
5835	break;
5836
5837	case SVGA3D_FACE_BACK:
5838	oglFace = GL_BACK;
5839	break;
5840
5841	case SVGA3D_FACE_FRONT_BACK:
5842	oglFace = GL_FRONT_AND_BACK;
5843	break;
5844
5845	default:
5846	AssertFailedReturn(VERR_INVALID_PARAMETER);
5847	}
5848
5849	/* Save for vm state save/restore. */
5850	pContext->state.aMaterial[face].fValid = true;
5851	pContext->state.aMaterial[face].material = *pMaterial;
5852	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_MATERIAL;
5853
5854	glMaterialfv(oglFace, GL_DIFFUSE, pMaterial->diffuse);
5855	glMaterialfv(oglFace, GL_AMBIENT, pMaterial->ambient);
5856	glMaterialfv(oglFace, GL_SPECULAR, pMaterial->specular);
5857	glMaterialfv(oglFace, GL_EMISSION, pMaterial->emissive);
5858	glMaterialfv(oglFace, GL_SHININESS, &pMaterial->shininess);
5859	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5860
5861	return VINF_SUCCESS;
5862	}
5863
5864	/** @todo Move into separate library as we are using logic from Wine here. */
5865	int vmsvga3dSetLightData(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, SVGA3dLightData *pData)
5866	{
5867	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5868	AssertReturn(pState, VERR_NO_MEMORY);
5869
5870	LogFunc(("vmsvga3dSetLightData cid=%u index=%d type=%d\n", cid, index, pData->type));
5871	ASSERT_GUEST_RETURN(index < SVGA3D_MAX_LIGHTS, VERR_INVALID_PARAMETER);
5872
5873	PVMSVGA3DCONTEXT pContext;
5874	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5875	AssertRCReturn(rc, rc);
5876
5877	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5878
5879	/* Store for vm state save/restore */
5880	pContext->state.aLightData[index].fValidData = true;
5881	pContext->state.aLightData[index].data = *pData;
5882
5883	if ( pData->attenuation0 < 0.0f
5884	\|\| pData->attenuation1 < 0.0f
5885	\|\| pData->attenuation2 < 0.0f)
5886	{
5887	Log(("vmsvga3dSetLightData: invalid negative attenuation values!!\n"));
5888	return VINF_SUCCESS; /* ignore; could crash the GL driver */
5889	}
5890
5891	/* Light settings are affected by the model view in OpenGL, the View transform in direct3d */
5892	glMatrixMode(GL_MODELVIEW);
5893	glPushMatrix();
5894	glLoadMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
5895
5896	glLightfv(GL_LIGHT0 + index, GL_DIFFUSE, pData->diffuse);
5897	glLightfv(GL_LIGHT0 + index, GL_SPECULAR, pData->specular);
5898	glLightfv(GL_LIGHT0 + index, GL_AMBIENT, pData->ambient);
5899
5900	float QuadAttenuation;
5901	if (pData->range * pData->range >= FLT_MIN)
5902	QuadAttenuation = 1.4f / (pData->range * pData->range);
5903	else
5904	QuadAttenuation = 0.0f;
5905
5906	switch (pData->type)
5907	{
5908	case SVGA3D_LIGHTTYPE_POINT:
5909	{
5910	GLfloat position[4];
5911
5912	position[0] = pData->position[0];
5913	position[1] = pData->position[1];
5914	position[2] = pData->position[2];
5915	position[3] = 1.0f;
5916
5917	glLightfv(GL_LIGHT0 + index, GL_POSITION, position);
5918	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5919
5920	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, 180.0f);
5921	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5922
5923	/* Attenuation - Are these right? guessing... */
5924	glLightf(GL_LIGHT0 + index, GL_CONSTANT_ATTENUATION, pData->attenuation0);
5925	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5926
5927	glLightf(GL_LIGHT0 + index, GL_LINEAR_ATTENUATION, pData->attenuation1);
5928	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5929
5930	glLightf(GL_LIGHT0 + index, GL_QUADRATIC_ATTENUATION, (QuadAttenuation < pData->attenuation2) ? pData->attenuation2 : QuadAttenuation);
5931	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5932
5933	/** @todo range */
5934	break;
5935	}
5936
5937	case SVGA3D_LIGHTTYPE_SPOT1:
5938	{
5939	GLfloat exponent;
5940	GLfloat position[4];
5941	const GLfloat pi = 4.0f * atanf(1.0f);
5942
5943	position[0] = pData->position[0];
5944	position[1] = pData->position[1];
5945	position[2] = pData->position[2];
5946	position[3] = 1.0f;
5947
5948	glLightfv(GL_LIGHT0 + index, GL_POSITION, position);
5949	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5950
5951	position[0] = pData->direction[0];
5952	position[1] = pData->direction[1];
5953	position[2] = pData->direction[2];
5954	position[3] = 1.0f;
5955
5956	glLightfv(GL_LIGHT0 + index, GL_SPOT_DIRECTION, position);
5957	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5958
5959	/*
5960	* opengl-ish and d3d-ish spot lights use too different models for the
5961	* light "intensity" as a function of the angle towards the main light direction,
5962	* so we only can approximate very roughly.
5963	* however spot lights are rather rarely used in games (if ever used at all).
5964	* furthermore if still used, probably nobody pays attention to such details.
5965	*/
5966	if (pData->falloff == 0)
5967	{
5968	/* Falloff = 0 is easy, because d3d's and opengl's spot light equations have the
5969	* falloff resp. exponent parameter as an exponent, so the spot light lighting
5970	* will always be 1.0 for both of them, and we don't have to care for the
5971	* rest of the rather complex calculation
5972	*/
5973	exponent = 0.0f;
5974	}
5975	else
5976	{
5977	float rho = pData->theta + (pData->phi - pData->theta) / (2 * pData->falloff);
5978	if (rho < 0.0001f)
5979	rho = 0.0001f;
5980	exponent = -0.3f/log(cos(rho/2));
5981	}
5982	if (exponent > 128.0f)
5983	exponent = 128.0f;
5984
5985	glLightf(GL_LIGHT0 + index, GL_SPOT_EXPONENT, exponent);
5986	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5987
5988	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, pData->phi * 90.0 / pi);
5989	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5990
5991	/* Attenuation - Are these right? guessing... */
5992	glLightf(GL_LIGHT0 + index, GL_CONSTANT_ATTENUATION, pData->attenuation0);
5993	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5994
5995	glLightf(GL_LIGHT0 + index, GL_LINEAR_ATTENUATION, pData->attenuation1);
5996	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5997
5998	glLightf(GL_LIGHT0 + index, GL_QUADRATIC_ATTENUATION, (QuadAttenuation < pData->attenuation2) ? pData->attenuation2 : QuadAttenuation);
5999	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6000
6001	/** @todo range */
6002	break;
6003	}
6004
6005	case SVGA3D_LIGHTTYPE_DIRECTIONAL:
6006	{
6007	GLfloat position[4];
6008
6009	position[0] = -pData->direction[0];
6010	position[1] = -pData->direction[1];
6011	position[2] = -pData->direction[2];
6012	position[3] = 0.0f;
6013
6014	glLightfv(GL_LIGHT0 + index, GL_POSITION, position); /* Note gl uses w position of 0 for direction! */
6015	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6016
6017	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, 180.0f);
6018	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6019
6020	glLightf(GL_LIGHT0 + index, GL_SPOT_EXPONENT, 0.0f);
6021	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6022	break;
6023	}
6024
6025	case SVGA3D_LIGHTTYPE_SPOT2:
6026	default:
6027	Log(("Unsupported light type!!\n"));
6028	rc = VERR_INVALID_PARAMETER;
6029	break;
6030	}
6031
6032	/* Restore the modelview matrix */
6033	glPopMatrix();
6034
6035	return rc;
6036	}
6037
6038	int vmsvga3dSetLightEnabled(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, uint32_t enabled)
6039	{
6040	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6041	AssertReturn(pState, VERR_NO_MEMORY);
6042
6043	LogFunc(("cid=%u %d -> %d\n", cid, index, enabled));
6044
6045	PVMSVGA3DCONTEXT pContext;
6046	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6047	AssertRCReturn(rc, rc);
6048
6049	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6050
6051	/* Store for vm state save/restore */
6052	if (index < SVGA3D_MAX_LIGHTS)
6053	pContext->state.aLightData[index].fEnabled = !!enabled;
6054	else
6055	AssertFailed();
6056
6057	if (enabled)
6058	{
6059	if (index < SVGA3D_MAX_LIGHTS)
6060	{
6061	/* Load the default settings if none have been set yet. */
6062	if (!pContext->state.aLightData[index].fValidData)
6063	vmsvga3dSetLightData(pThisCC, cid, index, (SVGA3dLightData *)&vmsvga3d_default_light);
6064	}
6065	glEnable(GL_LIGHT0 + index);
6066	}
6067	else
6068	glDisable(GL_LIGHT0 + index);
6069
6070	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6071	return VINF_SUCCESS;
6072	}
6073
6074	int vmsvga3dSetViewPort(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRect *pRect)
6075	{
6076	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6077	AssertReturn(pState, VERR_NO_MEMORY);
6078
6079	Log(("vmsvga3dSetViewPort cid=%u (%d,%d)(%d,%d)\n", cid, pRect->x, pRect->y, pRect->w, pRect->h));
6080
6081	PVMSVGA3DCONTEXT pContext;
6082	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6083	AssertRCReturn(rc, rc);
6084
6085	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6086
6087	/* Save for vm state save/restore. */
6088	pContext->state.RectViewPort = *pRect;
6089	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_VIEWPORT;
6090
6091	/** @todo y-inversion for partial viewport coordinates? */
6092	glViewport(pRect->x, pRect->y, pRect->w, pRect->h);
6093	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6094
6095	/* Reset the projection matrix as that relies on the viewport setting. */
6096	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].fValid == true)
6097	vmsvga3dSetTransform(pThisCC, cid, SVGA3D_TRANSFORM_PROJECTION,
6098	pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].matrix);
6099	else
6100	{
6101	float matrix[16];
6102
6103	/* identity matrix if no matrix set. */
6104	memset(matrix, 0, sizeof(matrix));
6105	matrix[0] = 1.0;
6106	matrix[5] = 1.0;
6107	matrix[10] = 1.0;
6108	matrix[15] = 1.0;
6109	vmsvga3dSetTransform(pThisCC, cid, SVGA3D_TRANSFORM_PROJECTION, matrix);
6110	}
6111
6112	return VINF_SUCCESS;
6113	}
6114
6115	int vmsvga3dSetClipPlane(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, float plane[4])
6116	{
6117	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6118	AssertReturn(pState, VERR_NO_MEMORY);
6119	double oglPlane[4];
6120
6121	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)));
6122	AssertReturn(index < SVGA3D_CLIPPLANE_MAX, VERR_INVALID_PARAMETER);
6123
6124	PVMSVGA3DCONTEXT pContext;
6125	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6126	AssertRCReturn(rc, rc);
6127
6128	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6129
6130	/* Store for vm state save/restore. */
6131	pContext->state.aClipPlane[index].fValid = true;
6132	memcpy(pContext->state.aClipPlane[index].plane, plane, sizeof(pContext->state.aClipPlane[index].plane));
6133
6134	/** @todo clip plane affected by model view in OpenGL & view in D3D + vertex shader -> not transformed (see Wine; state.c clipplane) */
6135	oglPlane[0] = (double)plane[0];
6136	oglPlane[1] = (double)plane[1];
6137	oglPlane[2] = (double)plane[2];
6138	oglPlane[3] = (double)plane[3];
6139
6140	glClipPlane(GL_CLIP_PLANE0 + index, oglPlane);
6141	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6142
6143	return VINF_SUCCESS;
6144	}
6145
6146	int vmsvga3dSetScissorRect(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRect *pRect)
6147	{
6148	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6149	AssertReturn(pState, VERR_NO_MEMORY);
6150
6151	Log(("vmsvga3dSetScissorRect cid=%u (%d,%d)(%d,%d)\n", cid, pRect->x, pRect->y, pRect->w, pRect->h));
6152
6153	PVMSVGA3DCONTEXT pContext;
6154	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6155	AssertRCReturn(rc, rc);
6156
6157	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6158
6159	/* Store for vm state save/restore. */
6160	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_SCISSORRECT;
6161	pContext->state.RectScissor = *pRect;
6162
6163	glScissor(pRect->x, pRect->y, pRect->w, pRect->h);
6164	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6165
6166	return VINF_SUCCESS;
6167	}
6168
6169	static void vmsvgaColor2GLFloatArray(uint32_t color, GLfloat pRed, GLfloat pGreen, GLfloat pBlue, GLfloat pAlpha)
6170	{
6171	/* Convert byte color components to float (0-1.0) */
6172	*pAlpha = (GLfloat)(color >> 24) / 255.0;
6173	*pRed = (GLfloat)((color >> 16) & 0xff) / 255.0;
6174	*pGreen = (GLfloat)((color >> 8) & 0xff) / 255.0;
6175	*pBlue = (GLfloat)(color & 0xff) / 255.0;
6176	}
6177
6178	int vmsvga3dCommandClear(PVGASTATECC pThisCC, uint32_t cid, SVGA3dClearFlag clearFlag, uint32_t color, float depth, uint32_t stencil,
6179	uint32_t cRects, SVGA3dRect *pRect)
6180	{
6181	GLbitfield mask = 0;
6182	GLbitfield restoreMask = 0;
6183	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6184	AssertReturn(pState, VERR_NO_MEMORY);
6185	GLboolean fDepthWriteEnabled = GL_FALSE;
6186	GLboolean afColorWriteEnabled[4] = { GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE };
6187
6188	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));
6189
6190	PVMSVGA3DCONTEXT pContext;
6191	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6192	AssertRCReturn(rc, rc);
6193
6194	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6195
6196	if (clearFlag & SVGA3D_CLEAR_COLOR)
6197	{
6198	GLfloat red, green, blue, alpha;
6199	vmsvgaColor2GLFloatArray(color, &red, &green, &blue, &alpha);
6200
6201	/* Set the color clear value. */
6202	glClearColor(red, green, blue, alpha);
6203	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6204
6205	mask \|= GL_COLOR_BUFFER_BIT;
6206
6207	/* glClear will not clear the color buffer if writing is disabled. */
6208	glGetBooleanv(GL_COLOR_WRITEMASK, afColorWriteEnabled);
6209	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6210	if ( afColorWriteEnabled[0] == GL_FALSE
6211	\|\| afColorWriteEnabled[1] == GL_FALSE
6212	\|\| afColorWriteEnabled[2] == GL_FALSE
6213	\|\| afColorWriteEnabled[3] == GL_FALSE)
6214	{
6215	glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
6216	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6217
6218	restoreMask \|= GL_COLOR_BUFFER_BIT;
6219	}
6220
6221	}
6222
6223	if (clearFlag & SVGA3D_CLEAR_STENCIL)
6224	{
6225	/** @todo possibly the same problem as with glDepthMask */
6226	glClearStencil(stencil);
6227	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6228
6229	mask \|= GL_STENCIL_BUFFER_BIT;
6230	}
6231
6232	if (clearFlag & SVGA3D_CLEAR_DEPTH)
6233	{
6234	glClearDepth((GLdouble)depth);
6235	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6236
6237	mask \|= GL_DEPTH_BUFFER_BIT;
6238
6239	/* glClear will not clear the depth buffer if writing is disabled. */
6240	glGetBooleanv(GL_DEPTH_WRITEMASK, &fDepthWriteEnabled);
6241	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6242	if (fDepthWriteEnabled == GL_FALSE)
6243	{
6244	glDepthMask(GL_TRUE);
6245	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6246
6247	restoreMask \|= GL_DEPTH_BUFFER_BIT;
6248	}
6249	}
6250
6251	/* Save the current scissor test bit and scissor box. */
6252	glPushAttrib(GL_SCISSOR_BIT);
6253	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6254
6255	if (cRects)
6256	{
6257	glEnable(GL_SCISSOR_TEST);
6258	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6259
6260	for (uint32_t i = 0; i < cRects; ++i)
6261	{
6262	LogFunc(("rect [%d] %d,%d %dx%d)\n", i, pRect[i].x, pRect[i].y, pRect[i].w, pRect[i].h));
6263	glScissor(pRect[i].x, pRect[i].y, pRect[i].w, pRect[i].h);
6264	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6265
6266	glClear(mask);
6267	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6268	}
6269	}
6270	else
6271	{
6272	glDisable(GL_SCISSOR_TEST);
6273	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6274
6275	glClear(mask);
6276	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6277	}
6278
6279	/* Restore the old scissor test bit and box */
6280	glPopAttrib();
6281	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6282
6283	/* Restore the write states. */
6284	if (restoreMask & GL_COLOR_BUFFER_BIT)
6285	{
6286	glColorMask(afColorWriteEnabled[0],
6287	afColorWriteEnabled[1],
6288	afColorWriteEnabled[2],
6289	afColorWriteEnabled[3]);
6290	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6291	}
6292
6293	if (restoreMask & GL_DEPTH_BUFFER_BIT)
6294	{
6295	glDepthMask(fDepthWriteEnabled);
6296	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6297	}
6298
6299	return VINF_SUCCESS;
6300	}
6301
6302	/* Convert VMWare vertex declaration to its OpenGL equivalent. */
6303	int vmsvga3dVertexDecl2OGL(SVGA3dVertexArrayIdentity &identity, GLint &size, GLenum &type, GLboolean &normalized, uint32_t &cbAttrib)
6304	{
6305	normalized = GL_FALSE;
6306	switch (identity.type)
6307	{
6308	case SVGA3D_DECLTYPE_FLOAT1:
6309	size = 1;
6310	type = GL_FLOAT;
6311	cbAttrib = sizeof(float);
6312	break;
6313	case SVGA3D_DECLTYPE_FLOAT2:
6314	size = 2;
6315	type = GL_FLOAT;
6316	cbAttrib = 2 * sizeof(float);
6317	break;
6318	case SVGA3D_DECLTYPE_FLOAT3:
6319	size = 3;
6320	type = GL_FLOAT;
6321	cbAttrib = 3 * sizeof(float);
6322	break;
6323	case SVGA3D_DECLTYPE_FLOAT4:
6324	size = 4;
6325	type = GL_FLOAT;
6326	cbAttrib = 4 * sizeof(float);
6327	break;
6328
6329	case SVGA3D_DECLTYPE_D3DCOLOR:
6330	size = GL_BGRA; /* @note requires GL_ARB_vertex_array_bgra */
6331	type = GL_UNSIGNED_BYTE;
6332	normalized = GL_TRUE; /* glVertexAttribPointer fails otherwise */
6333	cbAttrib = sizeof(uint32_t);
6334	break;
6335
6336	case SVGA3D_DECLTYPE_UBYTE4N:
6337	normalized = GL_TRUE;
6338	RT_FALL_THRU();
6339	case SVGA3D_DECLTYPE_UBYTE4:
6340	size = 4;
6341	type = GL_UNSIGNED_BYTE;
6342	cbAttrib = sizeof(uint32_t);
6343	break;
6344
6345	case SVGA3D_DECLTYPE_SHORT2N:
6346	normalized = GL_TRUE;
6347	RT_FALL_THRU();
6348	case SVGA3D_DECLTYPE_SHORT2:
6349	size = 2;
6350	type = GL_SHORT;
6351	cbAttrib = 2 * sizeof(uint16_t);
6352	break;
6353
6354	case SVGA3D_DECLTYPE_SHORT4N:
6355	normalized = GL_TRUE;
6356	RT_FALL_THRU();
6357	case SVGA3D_DECLTYPE_SHORT4:
6358	size = 4;
6359	type = GL_SHORT;
6360	cbAttrib = 4 * sizeof(uint16_t);
6361	break;
6362
6363	case SVGA3D_DECLTYPE_USHORT4N:
6364	normalized = GL_TRUE;
6365	size = 4;
6366	type = GL_UNSIGNED_SHORT;
6367	cbAttrib = 4 * sizeof(uint16_t);
6368	break;
6369
6370	case SVGA3D_DECLTYPE_USHORT2N:
6371	normalized = GL_TRUE;
6372	size = 2;
6373	type = GL_UNSIGNED_SHORT;
6374	cbAttrib = 2 * sizeof(uint16_t);
6375	break;
6376
6377	case SVGA3D_DECLTYPE_UDEC3:
6378	size = 3;
6379	type = GL_UNSIGNED_INT_2_10_10_10_REV; /** @todo correct? */
6380	cbAttrib = sizeof(uint32_t);
6381	break;
6382
6383	case SVGA3D_DECLTYPE_DEC3N:
6384	normalized = true;
6385	size = 3;
6386	type = GL_INT_2_10_10_10_REV; /** @todo correct? */
6387	cbAttrib = sizeof(uint32_t);
6388	break;
6389
6390	case SVGA3D_DECLTYPE_FLOAT16_2:
6391	size = 2;
6392	type = GL_HALF_FLOAT;
6393	cbAttrib = 2 * sizeof(uint16_t);
6394	break;
6395	case SVGA3D_DECLTYPE_FLOAT16_4:
6396	size = 4;
6397	type = GL_HALF_FLOAT;
6398	cbAttrib = 4 * sizeof(uint16_t);
6399	break;
6400	default:
6401	AssertFailedReturn(VERR_INVALID_PARAMETER);
6402	}
6403
6404	//pVertexElement->Method = identity.method;
6405	//pVertexElement->Usage = identity.usage;
6406
6407	return VINF_SUCCESS;
6408	}
6409
6410	static float vmsvga3dFloat16To32(uint16_t f16)
6411	{
6412	/* From Wiki */
6413	#ifndef INFINITY
6414	static uint32_t const sBitsINFINITY = UINT32_C(0x7f800000);
6415	#define INFINITY ((float const )&sBitsINFINITY)
6416	#endif
6417	#ifndef NAN
6418	static uint32_t const sBitsNAN = UINT32_C(0x7fc00000);
6419	#define NAN ((float const )&sBitsNAN)
6420	#endif
6421
6422	uint16_t const s = (f16 >> UINT16_C(15)) & UINT16_C(0x1);
6423	uint16_t const e = (f16 >> UINT16_C(10)) & UINT16_C(0x1f);
6424	uint16_t const m = (f16 ) & UINT16_C(0x3ff);
6425
6426	float result = s ? 1.0f : -1.0f;
6427	if (e == 0)
6428	{
6429	if (m == 0)
6430	result = 0.0f; / zero, -0 */
6431	else
6432	result = (float)m / 1024.0f / 16384.0f; / subnormal numbers: sign * 2^-14 * 0.m */
6433	}
6434	else if (e == 0x1f)
6435	{
6436	if (m == 0)
6437	result = INFINITY; / +-infinity */
6438	else
6439	result = NAN; /* NAN */
6440	}
6441	else
6442	{
6443	result = powf(2.0f, (float)e - 15.0f) (1.0f + (float)m / 1024.0f); /* sign * 2^(e-15) * 1.m */
6444	}
6445
6446	return result;
6447	}
6448
6449	/* Set a vertex attribute according to VMSVGA vertex declaration. */
6450	static int vmsvga3dSetVertexAttrib(PVMSVGA3DSTATE pState, GLuint index, SVGA3dVertexArrayIdentity const pIdentity, GLvoid const pv)
6451	{
6452	switch (pIdentity->type)
6453	{
6454	case SVGA3D_DECLTYPE_FLOAT1:
6455	{
6456	/* "One-component float expanded to (float, 0, 0, 1)." */
6457	GLfloat const p = (GLfloat )pv;
6458	GLfloat const v[4] = { p[0], 0.0f, 0.0f, 1.0f };
6459	pState->ext.glVertexAttrib4fv(index, v);
6460	break;
6461	}
6462	case SVGA3D_DECLTYPE_FLOAT2:
6463	{
6464	/* "Two-component float expanded to (float, float, 0, 1)." */
6465	GLfloat const p = (GLfloat )pv;
6466	GLfloat const v[4] = { p[0], p[1], 0.0f, 1.0f };
6467	pState->ext.glVertexAttrib4fv(index, v);
6468	break;
6469	}
6470	case SVGA3D_DECLTYPE_FLOAT3:
6471	{
6472	/* "Three-component float expanded to (float, float, float, 1)." */
6473	GLfloat const p = (GLfloat )pv;
6474	GLfloat const v[4] = { p[0], p[1], p[2], 1.0f };
6475	pState->ext.glVertexAttrib4fv(index, v);
6476	break;
6477	}
6478	case SVGA3D_DECLTYPE_FLOAT4:
6479	pState->ext.glVertexAttrib4fv(index, (GLfloat const *)pv);
6480	break;
6481	case SVGA3D_DECLTYPE_D3DCOLOR:
6482	/** @todo Need to swap bytes? */
6483	pState->ext.glVertexAttrib4Nubv(index, (GLubyte const *)pv);
6484	break;
6485	case SVGA3D_DECLTYPE_UBYTE4:
6486	pState->ext.glVertexAttrib4ubv(index, (GLubyte const *)pv);
6487	break;
6488	case SVGA3D_DECLTYPE_SHORT2:
6489	{
6490	/* "Two-component, signed short expanded to (value, value, 0, 1)." */
6491	GLshort const p = (GLshort const )pv;
6492	GLshort const v[4] = { p[0], p[1], 0, 1 };
6493	pState->ext.glVertexAttrib4sv(index, v);
6494	break;
6495	}
6496	case SVGA3D_DECLTYPE_SHORT4:
6497	pState->ext.glVertexAttrib4sv(index, (GLshort const *)pv);
6498	break;
6499	case SVGA3D_DECLTYPE_UBYTE4N:
6500	pState->ext.glVertexAttrib4Nubv(index, (GLubyte const *)pv);
6501	break;
6502	case SVGA3D_DECLTYPE_SHORT2N:
6503	{
6504	/* "Normalized, two-component, signed short, expanded to (first short/32767.0, second short/32767.0, 0, 1)." */
6505	GLshort const p = (GLshort const )pv;
6506	GLshort const v[4] = { p[0], p[1], 0, 1 };
6507	pState->ext.glVertexAttrib4Nsv(index, v);
6508	break;
6509	}
6510	case SVGA3D_DECLTYPE_SHORT4N:
6511	pState->ext.glVertexAttrib4Nsv(index, (GLshort const *)pv);
6512	break;
6513	case SVGA3D_DECLTYPE_USHORT2N:
6514	{
6515	GLushort const p = (GLushort const )pv;
6516	GLushort const v[4] = { p[0], p[1], 0, 1 };
6517	pState->ext.glVertexAttrib4Nusv(index, v);
6518	break;
6519	}
6520	case SVGA3D_DECLTYPE_USHORT4N:
6521	pState->ext.glVertexAttrib4Nusv(index, (GLushort const *)pv);
6522	break;
6523	case SVGA3D_DECLTYPE_UDEC3:
6524	{
6525	/** @todo Test */
6526	/* "Three-component, unsigned, 10 10 10 format expanded to (value, value, value, 1)." */
6527	uint32_t const u32 = (uint32_t )pv;
6528	GLfloat const v[4] = { (float)(u32 & 0x3ff), (float)((u32 >> 10) & 0x3ff), (float)((u32 >> 20) & 0x3ff), 1.0f };
6529	pState->ext.glVertexAttrib4fv(index, v);
6530	break;
6531	}
6532	case SVGA3D_DECLTYPE_DEC3N:
6533	{
6534	/** @todo Test */
6535	/* "Three-component, signed, 10 10 10 format normalized and expanded to (v[0]/511.0, v[1]/511.0, v[2]/511.0, 1)." */
6536	uint32_t const u32 = (uint32_t )pv;
6537	GLfloat const v[4] = { (u32 & 0x3ff) / 511.0f, ((u32 >> 10) & 0x3ff) / 511.0f, ((u32 >> 20) & 0x3ff) / 511.0f, 1.0f };
6538	pState->ext.glVertexAttrib4fv(index, v);
6539	break;
6540	}
6541	case SVGA3D_DECLTYPE_FLOAT16_2:
6542	{
6543	/** @todo Test */
6544	/* "Two-component, 16-bit, floating point expanded to (value, value, 0, 1)." */
6545	uint16_t const p = (uint16_t )pv;
6546	GLfloat const v[4] = { vmsvga3dFloat16To32(p[0]), vmsvga3dFloat16To32(p[1]), 0.0f, 1.0f };
6547	pState->ext.glVertexAttrib4fv(index, v);
6548	break;
6549	}
6550	case SVGA3D_DECLTYPE_FLOAT16_4:
6551	{
6552	/** @todo Test */
6553	uint16_t const p = (uint16_t )pv;
6554	GLfloat const v[4] = { vmsvga3dFloat16To32(p[0]), vmsvga3dFloat16To32(p[1]),
6555	vmsvga3dFloat16To32(p[2]), vmsvga3dFloat16To32(p[3]) };
6556	pState->ext.glVertexAttrib4fv(index, v);
6557	break;
6558	}
6559	default:
6560	AssertFailedReturn(VERR_INVALID_PARAMETER);
6561	}
6562
6563	return VINF_SUCCESS;
6564	}
6565
6566	/* Convert VMWare primitive type to its OpenGL equivalent. */
6567	/* Calculate the vertex count based on the primitive type and nr of primitives. */
6568	int vmsvga3dPrimitiveType2OGL(SVGA3dPrimitiveType PrimitiveType, GLenum pMode, uint32_t cPrimitiveCount, uint32_t pcVertices)
6569	{
6570	switch (PrimitiveType)
6571	{
6572	case SVGA3D_PRIMITIVE_TRIANGLELIST:
6573	*pMode = GL_TRIANGLES;
6574	pcVertices = cPrimitiveCount 3;
6575	break;
6576	case SVGA3D_PRIMITIVE_POINTLIST:
6577	*pMode = GL_POINTS;
6578	*pcVertices = cPrimitiveCount;
6579	break;
6580	case SVGA3D_PRIMITIVE_LINELIST:
6581	*pMode = GL_LINES;
6582	pcVertices = cPrimitiveCount 2;
6583	break;
6584	case SVGA3D_PRIMITIVE_LINESTRIP:
6585	*pMode = GL_LINE_STRIP;
6586	*pcVertices = cPrimitiveCount + 1;
6587	break;
6588	case SVGA3D_PRIMITIVE_TRIANGLESTRIP:
6589	*pMode = GL_TRIANGLE_STRIP;
6590	*pcVertices = cPrimitiveCount + 2;
6591	break;
6592	case SVGA3D_PRIMITIVE_TRIANGLEFAN:
6593	*pMode = GL_TRIANGLE_FAN;
6594	*pcVertices = cPrimitiveCount + 2;
6595	break;
6596	default:
6597	return VERR_INVALID_PARAMETER;
6598	}
6599	return VINF_SUCCESS;
6600	}
6601
6602	static int vmsvga3dResetTransformMatrices(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
6603	{
6604	int rc;
6605
6606	/* Reset the view matrix (also takes the world matrix into account). */
6607	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].fValid == true)
6608	rc = vmsvga3dSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_VIEW,
6609	pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
6610	else
6611	{
6612	float matrix[16];
6613
6614	/* identity matrix if no matrix set. */
6615	memset(matrix, 0, sizeof(matrix));
6616	matrix[0] = 1.0;
6617	matrix[5] = 1.0;
6618	matrix[10] = 1.0;
6619	matrix[15] = 1.0;
6620	rc = vmsvga3dSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_VIEW, matrix);
6621	}
6622
6623	/* Reset the projection matrix. */
6624	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].fValid == true)
6625	{
6626	rc = vmsvga3dSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_PROJECTION, pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].matrix);
6627	}
6628	else
6629	{
6630	float matrix[16];
6631
6632	/* identity matrix if no matrix set. */
6633	memset(matrix, 0, sizeof(matrix));
6634	matrix[0] = 1.0;
6635	matrix[5] = 1.0;
6636	matrix[10] = 1.0;
6637	matrix[15] = 1.0;
6638	rc = vmsvga3dSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_PROJECTION, matrix);
6639	}
6640	AssertRC(rc);
6641	return rc;
6642	}
6643
6644	static int vmsvga3dDrawPrimitivesProcessVertexDecls(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext,
6645	uint32_t iVertexDeclBase, uint32_t numVertexDecls,
6646	SVGA3dVertexDecl *pVertexDecl,
6647	SVGA3dVertexDivisor const *paVertexDivisors)
6648	{
6649	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6650	unsigned const sidVertex = pVertexDecl[0].array.surfaceId;
6651
6652	PVMSVGA3DSURFACE pVertexSurface;
6653	int rc = vmsvga3dSurfaceFromSid(pState, sidVertex, &pVertexSurface);
6654	AssertRCReturn(rc, rc);
6655
6656	Log(("vmsvga3dDrawPrimitives: vertex surface sid=%u\n", sidVertex));
6657
6658	/* Create and/or bind the vertex buffer. */
6659	if (pVertexSurface->oglId.buffer == OPENGL_INVALID_ID)
6660	{
6661	Log(("vmsvga3dDrawPrimitives: create vertex buffer fDirty=%d size=%x bytes\n", pVertexSurface->fDirty, pVertexSurface->paMipmapLevels[0].cbSurface));
6662	PVMSVGA3DCONTEXT pSavedCtx = pContext;
6663	pContext = &pState->SharedCtx;
6664	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6665
6666	pState->ext.glGenBuffers(1, &pVertexSurface->oglId.buffer);
6667	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6668	pVertexSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_BUFFER;
6669
6670	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pVertexSurface->oglId.buffer);
6671	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6672
6673	Assert(pVertexSurface->fDirty);
6674	/** @todo rethink usage dynamic/static */
6675	pState->ext.glBufferData(GL_ARRAY_BUFFER, pVertexSurface->paMipmapLevels[0].cbSurface, pVertexSurface->paMipmapLevels[0].pSurfaceData, GL_DYNAMIC_DRAW);
6676	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6677
6678	pVertexSurface->paMipmapLevels[0].fDirty = false;
6679	pVertexSurface->fDirty = false;
6680
6681	pVertexSurface->surfaceFlags \|= SVGA3D_SURFACE_HINT_VERTEXBUFFER;
6682
6683	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, OPENGL_INVALID_ID);
6684	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6685
6686	pContext = pSavedCtx;
6687	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6688	}
6689
6690	Assert(pVertexSurface->fDirty == false);
6691	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pVertexSurface->oglId.buffer);
6692	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6693
6694	/* Setup the vertex declarations. */
6695	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
6696	{
6697	GLint size;
6698	GLenum type;
6699	GLboolean normalized;
6700	uint32_t cbAttrib;
6701	GLuint index = iVertexDeclBase + iVertex;
6702
6703	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));
6704
6705	rc = vmsvga3dVertexDecl2OGL(pVertexDecl[iVertex].identity, size, type, normalized, cbAttrib);
6706	AssertRCReturn(rc, rc);
6707
6708	ASSERT_GUEST_RETURN( pVertexSurface->paMipmapLevels[0].cbSurface >= pVertexDecl[iVertex].array.offset
6709	&& pVertexSurface->paMipmapLevels[0].cbSurface - pVertexDecl[iVertex].array.offset >= cbAttrib,
6710	VERR_INVALID_PARAMETER);
6711	RT_UNTRUSTED_VALIDATED_FENCE();
6712
6713	if (pContext->state.shidVertex != SVGA_ID_INVALID)
6714	{
6715	/* Use numbered vertex arrays (or attributes) when shaders are active. */
6716	if (pVertexDecl[iVertex].array.stride)
6717	{
6718	pState->ext.glEnableVertexAttribArray(index);
6719	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6720	pState->ext.glVertexAttribPointer(index, size, type, normalized, pVertexDecl[iVertex].array.stride,
6721	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6722	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6723
6724	GLuint divisor = paVertexDivisors && paVertexDivisors[index].s.instanceData ? 1 : 0;
6725	pState->ext.glVertexAttribDivisor(index, divisor);
6726	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6727
6728	/** @todo case SVGA3D_DECLUSAGE_COLOR: color component order not identical!! test GL_BGRA!! */
6729	}
6730	else
6731	{
6732	/*
6733	* D3D and OpenGL have a different meaning of value zero for the vertex array stride:
6734	* - D3D (VMSVGA): "use a zero stride to tell the runtime not to increment the vertex buffer offset."
6735	* - OpenGL: "If stride is 0, the generic vertex attributes are understood to be tightly packed in the array."
6736	* VMSVGA uses the D3D semantics.
6737	*
6738	* Use glVertexAttrib in order to tell OpenGL to reuse the zero stride attributes for each vertex.
6739	*/
6740	pState->ext.glDisableVertexAttribArray(index);
6741	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6742
6743	const GLvoid v = (uint8_t )pVertexSurface->paMipmapLevels[0].pSurfaceData + pVertexDecl[iVertex].array.offset;
6744	vmsvga3dSetVertexAttrib(pState, index, &pVertexDecl[iVertex].identity, v);
6745	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6746	}
6747	}
6748	else
6749	{
6750	if (pVertexDecl[iVertex].array.stride == 0)
6751	{
6752	/* Zero stride means that the attribute pointer must not be increased.
6753	* See comment about stride in vmsvga3dDrawPrimitives.
6754	*/
6755	LogRelMax(8, ("VMSVGA: Warning: zero stride array in fixed function pipeline\n"));
6756	AssertFailed();
6757	}
6758
6759	/* Use the predefined selection of vertex streams for the fixed pipeline. */
6760	switch (pVertexDecl[iVertex].identity.usage)
6761	{
6762	case SVGA3D_DECLUSAGE_POSITIONT:
6763	case SVGA3D_DECLUSAGE_POSITION:
6764	{
6765	glEnableClientState(GL_VERTEX_ARRAY);
6766	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6767	glVertexPointer(size, type, pVertexDecl[iVertex].array.stride,
6768	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6769	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6770	break;
6771	}
6772	case SVGA3D_DECLUSAGE_BLENDWEIGHT:
6773	AssertFailed();
6774	break;
6775	case SVGA3D_DECLUSAGE_BLENDINDICES:
6776	AssertFailed();
6777	break;
6778	case SVGA3D_DECLUSAGE_NORMAL:
6779	glEnableClientState(GL_NORMAL_ARRAY);
6780	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6781	glNormalPointer(type, pVertexDecl[iVertex].array.stride,
6782	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6783	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6784	break;
6785	case SVGA3D_DECLUSAGE_PSIZE:
6786	AssertFailed();
6787	break;
6788	case SVGA3D_DECLUSAGE_TEXCOORD:
6789	/* Specify the affected texture unit. */
6790	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x103
6791	glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6792	#else
6793	pState->ext.glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6794	#endif
6795	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
6796	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6797	glTexCoordPointer(size, type, pVertexDecl[iVertex].array.stride,
6798	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6799	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6800	break;
6801	case SVGA3D_DECLUSAGE_TANGENT:
6802	AssertFailed();
6803	break;
6804	case SVGA3D_DECLUSAGE_BINORMAL:
6805	AssertFailed();
6806	break;
6807	case SVGA3D_DECLUSAGE_TESSFACTOR:
6808	AssertFailed();
6809	break;
6810	case SVGA3D_DECLUSAGE_COLOR: /** @todo color component order not identical!! test GL_BGRA!! */
6811	glEnableClientState(GL_COLOR_ARRAY);
6812	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6813	glColorPointer(size, type, pVertexDecl[iVertex].array.stride,
6814	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6815	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6816	break;
6817	case SVGA3D_DECLUSAGE_FOG:
6818	glEnableClientState(GL_FOG_COORD_ARRAY);
6819	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6820	pState->ext.glFogCoordPointer(type, pVertexDecl[iVertex].array.stride,
6821	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6822	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6823	break;
6824	case SVGA3D_DECLUSAGE_DEPTH:
6825	AssertFailed();
6826	break;
6827	case SVGA3D_DECLUSAGE_SAMPLE:
6828	AssertFailed();
6829	break;
6830	case SVGA3D_DECLUSAGE_MAX: AssertFailed(); break; /* shut up gcc */
6831	}
6832	}
6833
6834	#ifdef LOG_ENABLED
6835	if (pVertexDecl[iVertex].array.stride == 0)
6836	Log(("vmsvga3dDrawPrimitives: stride == 0! Can be valid\n"));
6837	#endif
6838	}
6839
6840	return VINF_SUCCESS;
6841	}
6842
6843	static int vmsvga3dDrawPrimitivesCleanupVertexDecls(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t iVertexDeclBase,
6844	uint32_t numVertexDecls, SVGA3dVertexDecl *pVertexDecl)
6845	{
6846	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6847
6848	/* Clean up the vertex declarations. */
6849	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
6850	{
6851	if (pVertexDecl[iVertex].identity.usage == SVGA3D_DECLUSAGE_POSITIONT)
6852	{
6853	/* Reset the transformation matrices in case of a switch back from pretransformed mode. */
6854	Log(("vmsvga3dDrawPrimitivesCleanupVertexDecls: reset world and projection matrices after transformation reset (pre-transformed -> transformed)\n"));
6855	vmsvga3dResetTransformMatrices(pThisCC, pContext);
6856	}
6857
6858	if (pContext->state.shidVertex != SVGA_ID_INVALID)
6859	{
6860	/* Use numbered vertex arrays when shaders are active. */
6861	pState->ext.glVertexAttribDivisor(iVertexDeclBase + iVertex, 0);
6862	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6863	pState->ext.glDisableVertexAttribArray(iVertexDeclBase + iVertex);
6864	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6865	}
6866	else
6867	{
6868	/* Use the predefined selection of vertex streams for the fixed pipeline. */
6869	switch (pVertexDecl[iVertex].identity.usage)
6870	{
6871	case SVGA3D_DECLUSAGE_POSITION:
6872	case SVGA3D_DECLUSAGE_POSITIONT:
6873	glDisableClientState(GL_VERTEX_ARRAY);
6874	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6875	break;
6876	case SVGA3D_DECLUSAGE_BLENDWEIGHT:
6877	break;
6878	case SVGA3D_DECLUSAGE_BLENDINDICES:
6879	break;
6880	case SVGA3D_DECLUSAGE_NORMAL:
6881	glDisableClientState(GL_NORMAL_ARRAY);
6882	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6883	break;
6884	case SVGA3D_DECLUSAGE_PSIZE:
6885	break;
6886	case SVGA3D_DECLUSAGE_TEXCOORD:
6887	/* Specify the affected texture unit. */
6888	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x103
6889	glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6890	#else
6891	pState->ext.glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6892	#endif
6893	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
6894	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6895	break;
6896	case SVGA3D_DECLUSAGE_TANGENT:
6897	break;
6898	case SVGA3D_DECLUSAGE_BINORMAL:
6899	break;
6900	case SVGA3D_DECLUSAGE_TESSFACTOR:
6901	break;
6902	case SVGA3D_DECLUSAGE_COLOR: /** @todo color component order not identical!! */
6903	glDisableClientState(GL_COLOR_ARRAY);
6904	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6905	break;
6906	case SVGA3D_DECLUSAGE_FOG:
6907	glDisableClientState(GL_FOG_COORD_ARRAY);
6908	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6909	break;
6910	case SVGA3D_DECLUSAGE_DEPTH:
6911	break;
6912	case SVGA3D_DECLUSAGE_SAMPLE:
6913	break;
6914	case SVGA3D_DECLUSAGE_MAX: AssertFailed(); break; /* shut up gcc */
6915	}
6916	}
6917	}
6918	/* Unbind the vertex buffer after usage. */
6919	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
6920	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6921	return VINF_SUCCESS;
6922	}
6923
6924	int vmsvga3dDrawPrimitives(PVGASTATECC pThisCC, uint32_t cid, uint32_t numVertexDecls, SVGA3dVertexDecl *pVertexDecl,
6925	uint32_t numRanges, SVGA3dPrimitiveRange *pRange, uint32_t cVertexDivisor,
6926	SVGA3dVertexDivisor *pVertexDivisor)
6927	{
6928	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6929	AssertReturn(pState, VERR_INTERNAL_ERROR);
6930	uint32_t iCurrentVertex;
6931
6932	Log(("vmsvga3dDrawPrimitives cid=%u numVertexDecls=%d numRanges=%d, cVertexDivisor=%d\n", cid, numVertexDecls, numRanges, cVertexDivisor));
6933
6934	/* Caller already check these, but it cannot hurt to check again... */
6935	AssertReturn(numVertexDecls && numVertexDecls <= SVGA3D_MAX_VERTEX_ARRAYS, VERR_INVALID_PARAMETER);
6936	AssertReturn(numRanges && numRanges <= SVGA3D_MAX_DRAW_PRIMITIVE_RANGES, VERR_INVALID_PARAMETER);
6937	AssertReturn(!cVertexDivisor \|\| cVertexDivisor == numVertexDecls, VERR_INVALID_PARAMETER);
6938
6939	if (!cVertexDivisor)
6940	pVertexDivisor = NULL; /* Be sure. */
6941
6942	PVMSVGA3DCONTEXT pContext;
6943	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6944	AssertRCReturn(rc, rc);
6945
6946	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6947
6948	/* Check for pretransformed vertex declarations. */
6949	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
6950	{
6951	switch (pVertexDecl[iVertex].identity.usage)
6952	{
6953	case SVGA3D_DECLUSAGE_POSITIONT:
6954	Log(("ShaderSetPositionTransformed: (%d,%d)\n", pContext->state.RectViewPort.w, pContext->state.RectViewPort.h));
6955	RT_FALL_THRU();
6956	case SVGA3D_DECLUSAGE_POSITION:
6957	ShaderSetPositionTransformed(pContext->pShaderContext, pContext->state.RectViewPort.w,
6958	pContext->state.RectViewPort.h,
6959	pVertexDecl[iVertex].identity.usage == SVGA3D_DECLUSAGE_POSITIONT);
6960	break;
6961	default: /* Shut up MSC. */ break;
6962	}
6963	}
6964
6965	/* Flush any shader changes; after (!) checking the vertex declarations to deal with pre-transformed vertices. */
6966	if (pContext->pShaderContext)
6967	{
6968	uint32_t rtHeight = 0;
6969
6970	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0] != SVGA_ID_INVALID)
6971	{
6972	PVMSVGA3DSURFACE pRenderTarget;
6973	rc = vmsvga3dSurfaceFromSid(pState, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0], &pRenderTarget);
6974	AssertRCReturn(rc, rc);
6975
6976	rtHeight = pRenderTarget->paMipmapLevels[0].mipmapSize.height;
6977	}
6978
6979	ShaderUpdateState(pContext->pShaderContext, rtHeight);
6980	}
6981
6982	/* Try to figure out if instancing is used.
6983	* Support simple instancing case with one set of indexed data and one set per-instance data.
6984	*/
6985	uint32_t cInstances = 0;
6986	for (uint32_t iVertexDivisor = 0; iVertexDivisor < cVertexDivisor; ++iVertexDivisor)
6987	{
6988	if (pVertexDivisor[iVertexDivisor].s.indexedData)
6989	{
6990	if (cInstances == 0)
6991	cInstances = pVertexDivisor[iVertexDivisor].s.count;
6992	else
6993	Assert(cInstances == pVertexDivisor[iVertexDivisor].s.count);
6994	}
6995	else if (pVertexDivisor[iVertexDivisor].s.instanceData)
6996	{
6997	Assert(pVertexDivisor[iVertexDivisor].s.count == 1);
6998	}
6999	}
7000
7001	/* Process all vertex declarations. Each vertex buffer is represented by one stream. */
7002	iCurrentVertex = 0;
7003	while (iCurrentVertex < numVertexDecls)
7004	{
7005	uint32_t sidVertex = SVGA_ID_INVALID;
7006	uint32_t iVertex;
7007
7008	for (iVertex = iCurrentVertex; iVertex < numVertexDecls; iVertex++)
7009	{
7010	if ( sidVertex != SVGA_ID_INVALID
7011	&& pVertexDecl[iVertex].array.surfaceId != sidVertex
7012	)
7013	break;
7014	sidVertex = pVertexDecl[iVertex].array.surfaceId;
7015	}
7016
7017	rc = vmsvga3dDrawPrimitivesProcessVertexDecls(pThisCC, pContext, iCurrentVertex, iVertex - iCurrentVertex,
7018	&pVertexDecl[iCurrentVertex], pVertexDivisor);
7019	AssertRCReturn(rc, rc);
7020
7021	iCurrentVertex = iVertex;
7022	}
7023
7024	/* Now draw the primitives. */
7025	for (unsigned iPrimitive = 0; iPrimitive < numRanges; iPrimitive++)
7026	{
7027	GLenum modeDraw;
7028	unsigned const sidIndex = pRange[iPrimitive].indexArray.surfaceId;
7029	PVMSVGA3DSURFACE pIndexSurface = NULL;
7030	unsigned cVertices;
7031
7032	Log(("Primitive %d: type %s\n", iPrimitive, vmsvga3dPrimitiveType2String(pRange[iPrimitive].primType)));
7033	rc = vmsvga3dPrimitiveType2OGL(pRange[iPrimitive].primType, &modeDraw, pRange[iPrimitive].primitiveCount, &cVertices);
7034	if (RT_FAILURE(rc))
7035	{
7036	AssertRC(rc);
7037	goto internal_error;
7038	}
7039
7040	if (sidIndex != SVGA3D_INVALID_ID)
7041	{
7042	AssertMsg(pRange[iPrimitive].indexWidth == sizeof(uint32_t) \|\| pRange[iPrimitive].indexWidth == sizeof(uint16_t), ("Unsupported primitive width %d\n", pRange[iPrimitive].indexWidth));
7043
7044	rc = vmsvga3dSurfaceFromSid(pState, sidIndex, &pIndexSurface);
7045	if (RT_FAILURE(rc))
7046	{
7047	AssertRC(rc);
7048	goto internal_error;
7049	}
7050
7051	Log(("vmsvga3dDrawPrimitives: index surface sid=%u\n", sidIndex));
7052
7053	if (pIndexSurface->oglId.buffer == OPENGL_INVALID_ID)
7054	{
7055	Log(("vmsvga3dDrawPrimitives: create index buffer fDirty=%d size=%x bytes\n", pIndexSurface->fDirty, pIndexSurface->paMipmapLevels[0].cbSurface));
7056	pContext = &pState->SharedCtx;
7057	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7058
7059	pState->ext.glGenBuffers(1, &pIndexSurface->oglId.buffer);
7060	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7061	pIndexSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_BUFFER;
7062
7063	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->oglId.buffer);
7064	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7065
7066	Assert(pIndexSurface->fDirty);
7067
7068	/** @todo rethink usage dynamic/static */
7069	pState->ext.glBufferData(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->paMipmapLevels[0].cbSurface, pIndexSurface->paMipmapLevels[0].pSurfaceData, GL_DYNAMIC_DRAW);
7070	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7071
7072	pIndexSurface->paMipmapLevels[0].fDirty = false;
7073	pIndexSurface->fDirty = false;
7074
7075	pIndexSurface->surfaceFlags \|= SVGA3D_SURFACE_HINT_INDEXBUFFER;
7076
7077	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, OPENGL_INVALID_ID);
7078	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7079
7080	pContext = pState->papContexts[cid];
7081	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7082	}
7083	Assert(pIndexSurface->fDirty == false);
7084
7085	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->oglId.buffer);
7086	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7087	}
7088
7089	if (!pIndexSurface)
7090	{
7091	/* Render without an index buffer */
7092	Log(("DrawPrimitive %d cPrimitives=%d cVertices=%d index index bias=%d cInstances=%d\n", modeDraw, pRange[iPrimitive].primitiveCount, cVertices, pRange[iPrimitive].indexBias, cInstances));
7093	if (cInstances == 0)
7094	{
7095	glDrawArrays(modeDraw, pRange[iPrimitive].indexBias, cVertices);
7096	}
7097	else
7098	{
7099	pState->ext.glDrawArraysInstanced(modeDraw, pRange[iPrimitive].indexBias, cVertices, cInstances);
7100	}
7101	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7102	}
7103	else
7104	{
7105	Assert(pRange[iPrimitive].indexWidth == pRange[iPrimitive].indexArray.stride);
7106
7107	GLenum indexType;
7108	switch (pRange[iPrimitive].indexWidth)
7109	{
7110	case 1: indexType = GL_UNSIGNED_BYTE; break;
7111	case 2: indexType = GL_UNSIGNED_SHORT; break;
7112	default: AssertMsgFailed(("indexWidth %d\n", pRange[iPrimitive].indexWidth));
7113	RT_FALL_THROUGH();
7114	case 4: indexType = GL_UNSIGNED_INT; break;
7115	}
7116
7117	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));
7118	if (cInstances == 0)
7119	{
7120	/* Render with an index buffer */
7121	if (pRange[iPrimitive].indexBias == 0)
7122	glDrawElements(modeDraw,
7123	cVertices,
7124	indexType,
7125	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset); / byte offset in indices buffer */
7126	else
7127	pState->ext.glDrawElementsBaseVertex(modeDraw,
7128	cVertices,
7129	indexType,
7130	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7131	pRange[iPrimitive].indexBias); /* basevertex */
7132	}
7133	else
7134	{
7135	/* Render with an index buffer */
7136	if (pRange[iPrimitive].indexBias == 0)
7137	pState->ext.glDrawElementsInstanced(modeDraw,
7138	cVertices,
7139	indexType,
7140	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7141	cInstances);
7142	else
7143	pState->ext.glDrawElementsInstancedBaseVertex(modeDraw,
7144	cVertices,
7145	indexType,
7146	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7147	cInstances,
7148	pRange[iPrimitive].indexBias); /* basevertex */
7149	}
7150	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7151
7152	/* Unbind the index buffer after usage. */
7153	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
7154	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7155	}
7156	}
7157
7158	internal_error:
7159
7160	/* Deactivate the vertex declarations. */
7161	iCurrentVertex = 0;
7162	while (iCurrentVertex < numVertexDecls)
7163	{
7164	uint32_t sidVertex = SVGA_ID_INVALID;
7165	uint32_t iVertex;
7166
7167	for (iVertex = iCurrentVertex; iVertex < numVertexDecls; iVertex++)
7168	{
7169	if ( sidVertex != SVGA_ID_INVALID
7170	&& pVertexDecl[iVertex].array.surfaceId != sidVertex
7171	)
7172	break;
7173	sidVertex = pVertexDecl[iVertex].array.surfaceId;
7174	}
7175
7176	rc = vmsvga3dDrawPrimitivesCleanupVertexDecls(pThisCC, pContext, iCurrentVertex,
7177	iVertex - iCurrentVertex, &pVertexDecl[iCurrentVertex]);
7178	AssertRCReturn(rc, rc);
7179
7180	iCurrentVertex = iVertex;
7181	}
7182
7183	#ifdef DEBUG
7184	/* Check whether 'activeTexture' on texture unit 'i' matches what we expect. */
7185	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); ++i)
7186	{
7187	if (pContext->aSidActiveTextures[i] != SVGA3D_INVALID_ID)
7188	{
7189	PVMSVGA3DSURFACE pTexture;
7190	int rc2 = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[i], &pTexture);
7191	AssertContinue(RT_SUCCESS(rc2));
7192
7193	GLint activeTextureUnit = 0;
7194	glGetIntegerv(GL_ACTIVE_TEXTURE, &activeTextureUnit);
7195	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7196
7197	pState->ext.glActiveTexture(GL_TEXTURE0 + i);
7198	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7199
7200	GLint activeTexture = 0;
7201	glGetIntegerv(pTexture->bindingGL, &activeTexture);
7202	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7203
7204	pState->ext.glActiveTexture(activeTextureUnit);
7205	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7206
7207	AssertMsg(pTexture->oglId.texture == (GLuint)activeTexture,
7208	("%d vs %d unit %d (active unit %d) sid=%u\n", pTexture->oglId.texture, activeTexture, i,
7209	activeTextureUnit - GL_TEXTURE0, pContext->aSidActiveTextures[i]));
7210	}
7211	}
7212	#endif
7213
7214	#if 0
7215	/* Dump render target to a bitmap. */
7216	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0] != SVGA3D_INVALID_ID)
7217	{
7218	vmsvga3dUpdateHeapBuffersForSurfaces(pThisCC, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0]);
7219	PVMSVGA3DSURFACE pSurface;
7220	int rc2 = vmsvga3dSurfaceFromSid(pState, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0], &pSurface);
7221	if (RT_SUCCESS(rc2))
7222	vmsvga3dInfoSurfaceToBitmap(NULL, pSurface, "bmpgl", "rt", "-post");
7223	# if 0
7224	/* Stage 0 texture. */
7225	if (pContext->aSidActiveTextures[0] != SVGA3D_INVALID_ID)
7226	{
7227	vmsvga3dUpdateHeapBuffersForSurfaces(pThisCC, pContext->aSidActiveTextures[0]);
7228	rc2 = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[0], &pSurface);
7229	if (RT_SUCCESS(rc2))
7230	vmsvga3dInfoSurfaceToBitmap(NULL, pSurface, "bmpgl", "rt", "-post-tx");
7231	}
7232	# endif
7233	}
7234	#endif
7235
7236	return rc;
7237	}
7238
7239
7240	int vmsvga3dShaderDefine(PVGASTATECC pThisCC, uint32_t cid, uint32_t shid, SVGA3dShaderType type, uint32_t cbData, uint32_t *pShaderData)
7241	{
7242	PVMSVGA3DSHADER pShader;
7243	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7244	AssertReturn(pState, VERR_NO_MEMORY);
7245
7246	Log(("vmsvga3dShaderDefine cid=%u shid=%d type=%s cbData=0x%x\n", cid, shid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", cbData));
7247
7248	PVMSVGA3DCONTEXT pContext;
7249	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7250	AssertRCReturn(rc, rc);
7251
7252	AssertReturn(shid < SVGA3D_MAX_SHADER_IDS, VERR_INVALID_PARAMETER);
7253
7254	rc = vmsvga3dShaderParse(cbData, pShaderData);
7255	if (RT_FAILURE(rc))
7256	{
7257	AssertRC(rc);
7258	vmsvga3dShaderLogRel("Failed to parse", type, cbData, pShaderData);
7259	return rc;
7260	}
7261
7262	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7263
7264	if (type == SVGA3D_SHADERTYPE_VS)
7265	{
7266	if (shid >= pContext->cVertexShaders)
7267	{
7268	void pvNew = RTMemRealloc(pContext->paVertexShader, sizeof(VMSVGA3DSHADER) (shid + 1));
7269	AssertReturn(pvNew, VERR_NO_MEMORY);
7270	pContext->paVertexShader = (PVMSVGA3DSHADER)pvNew;
7271	memset(&pContext->paVertexShader[pContext->cVertexShaders], 0, sizeof(VMSVGA3DSHADER) * (shid + 1 - pContext->cVertexShaders));
7272	for (uint32_t i = pContext->cVertexShaders; i < shid + 1; i++)
7273	pContext->paVertexShader[i].id = SVGA3D_INVALID_ID;
7274	pContext->cVertexShaders = shid + 1;
7275	}
7276	/* If one already exists with this id, then destroy it now. */
7277	if (pContext->paVertexShader[shid].id != SVGA3D_INVALID_ID)
7278	vmsvga3dShaderDestroy(pThisCC, cid, shid, pContext->paVertexShader[shid].type);
7279
7280	pShader = &pContext->paVertexShader[shid];
7281	}
7282	else
7283	{
7284	Assert(type == SVGA3D_SHADERTYPE_PS);
7285	if (shid >= pContext->cPixelShaders)
7286	{
7287	void pvNew = RTMemRealloc(pContext->paPixelShader, sizeof(VMSVGA3DSHADER) (shid + 1));
7288	AssertReturn(pvNew, VERR_NO_MEMORY);
7289	pContext->paPixelShader = (PVMSVGA3DSHADER)pvNew;
7290	memset(&pContext->paPixelShader[pContext->cPixelShaders], 0, sizeof(VMSVGA3DSHADER) * (shid + 1 - pContext->cPixelShaders));
7291	for (uint32_t i = pContext->cPixelShaders; i < shid + 1; i++)
7292	pContext->paPixelShader[i].id = SVGA3D_INVALID_ID;
7293	pContext->cPixelShaders = shid + 1;
7294	}
7295	/* If one already exists with this id, then destroy it now. */
7296	if (pContext->paPixelShader[shid].id != SVGA3D_INVALID_ID)
7297	vmsvga3dShaderDestroy(pThisCC, cid, shid, pContext->paPixelShader[shid].type);
7298
7299	pShader = &pContext->paPixelShader[shid];
7300	}
7301
7302	memset(pShader, 0, sizeof(*pShader));
7303	pShader->id = shid;
7304	pShader->cid = cid;
7305	pShader->type = type;
7306	pShader->cbData = cbData;
7307	pShader->pShaderProgram = RTMemAllocZ(cbData);
7308	AssertReturn(pShader->pShaderProgram, VERR_NO_MEMORY);
7309	memcpy(pShader->pShaderProgram, pShaderData, cbData);
7310
7311	#ifdef DUMP_SHADER_DISASSEMBLY
7312	LPD3DXBUFFER pDisassembly;
7313	HRESULT hr = D3DXDisassembleShader((const DWORD *)pShaderData, FALSE, NULL, &pDisassembly);
7314	if (hr == D3D_OK)
7315	{
7316	Log(("Shader disassembly:\n%s\n", pDisassembly->GetBufferPointer()));
7317	pDisassembly->Release();
7318	}
7319	#endif
7320
7321	switch (type)
7322	{
7323	case SVGA3D_SHADERTYPE_VS:
7324	rc = ShaderCreateVertexShader(pContext->pShaderContext, (const uint32_t *)pShaderData, cbData, &pShader->u.pVertexShader);
7325	AssertRC(rc);
7326	break;
7327
7328	case SVGA3D_SHADERTYPE_PS:
7329	rc = ShaderCreatePixelShader(pContext->pShaderContext, (const uint32_t *)pShaderData, cbData, &pShader->u.pPixelShader);
7330	AssertRC(rc);
7331	break;
7332
7333	default:
7334	AssertFailedReturn(VERR_INVALID_PARAMETER);
7335	}
7336	if (rc != VINF_SUCCESS)
7337	{
7338	vmsvga3dShaderLogRel("Failed to create", type, cbData, pShaderData);
7339
7340	RTMemFree(pShader->pShaderProgram);
7341	memset(pShader, 0, sizeof(*pShader));
7342	pShader->id = SVGA3D_INVALID_ID;
7343	}
7344
7345	return rc;
7346	}
7347
7348	int vmsvga3dShaderDestroy(PVGASTATECC pThisCC, uint32_t cid, uint32_t shid, SVGA3dShaderType type)
7349	{
7350	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7351	AssertReturn(pState, VERR_NO_MEMORY);
7352	PVMSVGA3DSHADER pShader = NULL;
7353
7354	Log(("vmsvga3dShaderDestroy cid=%u shid=%d type=%s\n", cid, shid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL"));
7355
7356	PVMSVGA3DCONTEXT pContext;
7357	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7358	AssertRCReturn(rc, rc);
7359
7360	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7361
7362	if (type == SVGA3D_SHADERTYPE_VS)
7363	{
7364	if ( shid < pContext->cVertexShaders
7365	&& pContext->paVertexShader[shid].id == shid)
7366	{
7367	pShader = &pContext->paVertexShader[shid];
7368	rc = ShaderDestroyVertexShader(pContext->pShaderContext, pShader->u.pVertexShader);
7369	AssertRC(rc);
7370	}
7371	}
7372	else
7373	{
7374	Assert(type == SVGA3D_SHADERTYPE_PS);
7375	if ( shid < pContext->cPixelShaders
7376	&& pContext->paPixelShader[shid].id == shid)
7377	{
7378	pShader = &pContext->paPixelShader[shid];
7379	rc = ShaderDestroyPixelShader(pContext->pShaderContext, pShader->u.pPixelShader);
7380	AssertRC(rc);
7381	}
7382	}
7383
7384	if (pShader)
7385	{
7386	if (pShader->pShaderProgram)
7387	RTMemFree(pShader->pShaderProgram);
7388	memset(pShader, 0, sizeof(*pShader));
7389	pShader->id = SVGA3D_INVALID_ID;
7390	}
7391	else
7392	AssertFailedReturn(VERR_INVALID_PARAMETER);
7393
7394	return VINF_SUCCESS;
7395	}
7396
7397	int vmsvga3dShaderSet(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid, SVGA3dShaderType type, uint32_t shid)
7398	{
7399	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7400	AssertReturn(pState, VERR_NO_MEMORY);
7401	int rc;
7402
7403	Log(("vmsvga3dShaderSet cid=%u type=%s shid=%d\n", cid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", shid));
7404
7405	if (!pContext)
7406	{
7407	rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7408	AssertRCReturn(rc, rc);
7409	}
7410
7411	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7412
7413	if (type == SVGA3D_SHADERTYPE_VS)
7414	{
7415	/* Save for vm state save/restore. */
7416	pContext->state.shidVertex = shid;
7417	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_VERTEXSHADER;
7418
7419	if ( shid < pContext->cVertexShaders
7420	&& pContext->paVertexShader[shid].id == shid)
7421	{
7422	PVMSVGA3DSHADER pShader = &pContext->paVertexShader[shid];
7423	Assert(type == pShader->type);
7424
7425	rc = ShaderSetVertexShader(pContext->pShaderContext, pShader->u.pVertexShader);
7426	AssertRCReturn(rc, rc);
7427	}
7428	else
7429	if (shid == SVGA_ID_INVALID)
7430	{
7431	/* Unselect shader. */
7432	rc = ShaderSetVertexShader(pContext->pShaderContext, NULL);
7433	AssertRCReturn(rc, rc);
7434	}
7435	else
7436	AssertFailedReturn(VERR_INVALID_PARAMETER);
7437	}
7438	else
7439	{
7440	/* Save for vm state save/restore. */
7441	pContext->state.shidPixel = shid;
7442	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_PIXELSHADER;
7443
7444	Assert(type == SVGA3D_SHADERTYPE_PS);
7445	if ( shid < pContext->cPixelShaders
7446	&& pContext->paPixelShader[shid].id == shid)
7447	{
7448	PVMSVGA3DSHADER pShader = &pContext->paPixelShader[shid];
7449	Assert(type == pShader->type);
7450
7451	rc = ShaderSetPixelShader(pContext->pShaderContext, pShader->u.pPixelShader);
7452	AssertRCReturn(rc, rc);
7453	}
7454	else
7455	if (shid == SVGA_ID_INVALID)
7456	{
7457	/* Unselect shader. */
7458	rc = ShaderSetPixelShader(pContext->pShaderContext, NULL);
7459	AssertRCReturn(rc, rc);
7460	}
7461	else
7462	AssertFailedReturn(VERR_INVALID_PARAMETER);
7463	}
7464
7465	return VINF_SUCCESS;
7466	}
7467
7468	int vmsvga3dShaderSetConst(PVGASTATECC pThisCC, uint32_t cid, uint32_t reg, SVGA3dShaderType type, SVGA3dShaderConstType ctype, uint32_t cRegisters, uint32_t *pValues)
7469	{
7470	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7471	AssertReturn(pState, VERR_NO_MEMORY);
7472
7473	Log(("vmsvga3dShaderSetConst cid=%u reg=%x type=%s cregs=%d ctype=%x\n", cid, reg, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", cRegisters, ctype));
7474
7475	PVMSVGA3DCONTEXT pContext;
7476	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7477	AssertRCReturn(rc, rc);
7478
7479	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7480
7481	for (uint32_t i = 0; i < cRegisters; i++)
7482	{
7483	#ifdef LOG_ENABLED
7484	switch (ctype)
7485	{
7486	case SVGA3D_CONST_TYPE_FLOAT:
7487	{
7488	float pValuesF = (float )pValues;
7489	Log(("ConstantF %d: value=" FLOAT_FMT_STR ", " FLOAT_FMT_STR ", " FLOAT_FMT_STR ", " FLOAT_FMT_STR "\n",
7490	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])));
7491	break;
7492	}
7493
7494	case SVGA3D_CONST_TYPE_INT:
7495	Log(("ConstantI %d: value=%d, %d, %d, %d\n", reg + i, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]));
7496	break;
7497
7498	case SVGA3D_CONST_TYPE_BOOL:
7499	Log(("ConstantB %d: value=%d, %d, %d, %d\n", reg + i, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]));
7500	break;
7501	}
7502	#endif
7503	vmsvga3dSaveShaderConst(pContext, reg + i, type, ctype, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]);
7504	}
7505
7506	switch (type)
7507	{
7508	case SVGA3D_SHADERTYPE_VS:
7509	switch (ctype)
7510	{
7511	case SVGA3D_CONST_TYPE_FLOAT:
7512	rc = ShaderSetVertexShaderConstantF(pContext->pShaderContext, reg, (const float *)pValues, cRegisters);
7513	break;
7514
7515	case SVGA3D_CONST_TYPE_INT:
7516	rc = ShaderSetVertexShaderConstantI(pContext->pShaderContext, reg, (const int32_t *)pValues, cRegisters);
7517	break;
7518
7519	case SVGA3D_CONST_TYPE_BOOL:
7520	rc = ShaderSetVertexShaderConstantB(pContext->pShaderContext, reg, (const uint8_t *)pValues, cRegisters);
7521	break;
7522
7523	default:
7524	AssertFailedReturn(VERR_INVALID_PARAMETER);
7525	}
7526	AssertRCReturn(rc, rc);
7527	break;
7528
7529	case SVGA3D_SHADERTYPE_PS:
7530	switch (ctype)
7531	{
7532	case SVGA3D_CONST_TYPE_FLOAT:
7533	rc = ShaderSetPixelShaderConstantF(pContext->pShaderContext, reg, (const float *)pValues, cRegisters);
7534	break;
7535
7536	case SVGA3D_CONST_TYPE_INT:
7537	rc = ShaderSetPixelShaderConstantI(pContext->pShaderContext, reg, (const int32_t *)pValues, cRegisters);
7538	break;
7539
7540	case SVGA3D_CONST_TYPE_BOOL:
7541	rc = ShaderSetPixelShaderConstantB(pContext->pShaderContext, reg, (const uint8_t *)pValues, cRegisters);
7542	break;
7543
7544	default:
7545	AssertFailedReturn(VERR_INVALID_PARAMETER);
7546	}
7547	AssertRCReturn(rc, rc);
7548	break;
7549
7550	default:
7551	AssertFailedReturn(VERR_INVALID_PARAMETER);
7552	}
7553
7554	return VINF_SUCCESS;
7555	}
7556
7557	int vmsvga3dOcclusionQueryCreate(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
7558	{
7559	AssertReturn(pState->ext.glGenQueries, VERR_NOT_SUPPORTED);
7560	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7561
7562	GLuint idQuery = 0;
7563	pState->ext.glGenQueries(1, &idQuery);
7564	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7565	AssertReturn(idQuery, VERR_INTERNAL_ERROR);
7566	pContext->occlusion.idQuery = idQuery;
7567	return VINF_SUCCESS;
7568	}
7569
7570	int vmsvga3dOcclusionQueryDelete(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
7571	{
7572	AssertReturn(pState->ext.glDeleteQueries, VERR_NOT_SUPPORTED);
7573	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7574
7575	if (pContext->occlusion.idQuery)
7576	{
7577	pState->ext.glDeleteQueries(1, &pContext->occlusion.idQuery);
7578	}
7579	return VINF_SUCCESS;
7580	}
7581
7582	int vmsvga3dOcclusionQueryBegin(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
7583	{
7584	AssertReturn(pState->ext.glBeginQuery, VERR_NOT_SUPPORTED);
7585	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7586
7587	pState->ext.glBeginQuery(GL_ANY_SAMPLES_PASSED, pContext->occlusion.idQuery);
7588	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7589	return VINF_SUCCESS;
7590	}
7591
7592	int vmsvga3dOcclusionQueryEnd(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
7593	{
7594	AssertReturn(pState->ext.glEndQuery, VERR_NOT_SUPPORTED);
7595	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7596
7597	pState->ext.glEndQuery(GL_ANY_SAMPLES_PASSED);
7598	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7599	return VINF_SUCCESS;
7600	}
7601
7602	int vmsvga3dOcclusionQueryGetData(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, uint32_t *pu32Pixels)
7603	{
7604	AssertReturn(pState->ext.glGetQueryObjectuiv, VERR_NOT_SUPPORTED);
7605	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7606
7607	GLuint pixels = 0;
7608	pState->ext.glGetQueryObjectuiv(pContext->occlusion.idQuery, GL_QUERY_RESULT, &pixels);
7609	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7610
7611	*pu32Pixels = (uint32_t)pixels;
7612	return VINF_SUCCESS;
7613	}

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source: vbox/trunk/src/VBox/Devices/Graphics/DevVGA-SVGA3d-ogl.cpp@ 84909

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