DevVGA-SVGA3d-ogl.cpp@ 73390

Last change on this file since 73390 was 73390, checked in by vboxsync, 6 years ago
DevVGA-SVGA3d-ogl.cpp: allow DXT2 and DXT4 formats.
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1	/* $Id: DevVGA-SVGA3d-ogl.cpp 73390 2018-07-30 07:32:01Z vboxsync $ */
2	/** @file
3	* DevVMWare - VMWare SVGA device
4	*/
5
6	/*
7	* Copyright (C) 2013-2017 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
36	#include <iprt/assert.h>
37	#include <iprt/semaphore.h>
38	#include <iprt/uuid.h>
39	#include <iprt/mem.h>
40
41	#include <VBoxVideo.h> /* required by DevVGA.h */
42
43	/* should go BEFORE any other DevVGA include to make all DevVGA.h config defines be visible */
44	#include "DevVGA.h"
45
46	#include "DevVGA-SVGA.h"
47	#include "DevVGA-SVGA3d.h"
48	#include "DevVGA-SVGA3d-internal.h"
49
50	#ifdef DUMP_SHADER_DISASSEMBLY
51	# include <d3dx9shader.h>
52	#endif
53
54	#include <stdlib.h>
55	#include <math.h>
56	#include <float.h> /* FLT_MIN */
57
58
59	/*********************************************************************************************************************************
60	* Defined Constants And Macros *
61	*********************************************************************************************************************************/
62	#ifndef VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE
63	# define VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE 1.0
64	#endif
65
66	#ifdef RT_OS_WINDOWS
67	# define OGLGETPROCADDRESS MyWinGetProcAddress
68	DECLINLINE(PROC) MyWinGetProcAddress(const char *pszSymbol)
69	{
70	/* Khronos: [on failure] "some implementations will return other values. 1, 2, and 3 are used, as well as -1". */
71	PROC p = wglGetProcAddress(pszSymbol);
72	if (RT_VALID_PTR(p))
73	return p;
74	return 0;
75	}
76	#elif defined(RT_OS_DARWIN)
77	# include <dlfcn.h>
78	# define OGLGETPROCADDRESS MyNSGLGetProcAddress
79	/** Resolves an OpenGL symbol. */
80	static void MyNSGLGetProcAddress(const char pszSymbol)
81	{
82	/* Another copy in shaderapi.c. */
83	static void *s_pvImage = NULL;
84	if (s_pvImage == NULL)
85	s_pvImage = dlopen("/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL", RTLD_LAZY);
86	return s_pvImage ? dlsym(s_pvImage, pszSymbol) : NULL;
87	}
88
89	#else
90	# define OGLGETPROCADDRESS(x) glXGetProcAddress((const GLubyte *)x)
91	#endif
92
93	/* Invert y-coordinate for OpenGL's bottom left origin. */
94	#define D3D_TO_OGL_Y_COORD(ptrSurface, y_coordinate) (ptrSurface->pMipmapLevels[0].mipmapSize.height - (y_coordinate))
95	#define D3D_TO_OGL_Y_COORD_MIPLEVEL(ptrMipLevel, y_coordinate) (ptrMipLevel->size.height - (y_coordinate))
96
97	/* Enable to render the result of DrawPrimitive in a seperate window. */
98	//#define DEBUG_GFX_WINDOW
99
100
101	/**
102	* Macro for doing something and then checking for errors during initialization.
103	* Uses AssertLogRelMsg.
104	*/
105	#define VMSVGA3D_INIT_CHECKED(a_Expr) \
106	do \
107	{ \
108	a_Expr; \
109	GLenum iGlError = glGetError(); \
110	AssertLogRelMsg(iGlError == GL_NO_ERROR, ("VMSVGA3d: %s -> %#x\n", #a_Expr, iGlError)); \
111	} while (0)
112
113	/**
114	* Macro for doing something and then checking for errors during initialization,
115	* doing the same in the other context when enabled.
116	*
117	* This will try both profiles in dual profile builds. Caller must be in the
118	* default context.
119	*
120	* Uses AssertLogRelMsg to indicate trouble.
121	*/
122	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
123	# define VMSVGA3D_INIT_CHECKED_BOTH(a_pState, a_pContext, a_pOtherCtx, a_Expr) \
124	do \
125	{ \
126	for (uint32_t i = 0; i < 64; i++) if (glGetError() == GL_NO_ERROR) break; Assert(glGetError() == GL_NO_ERROR); \
127	a_Expr; \
128	GLenum iGlError = glGetError(); \
129	if (iGlError != GL_NO_ERROR) \
130	{ \
131	VMSVGA3D_SET_CURRENT_CONTEXT(a_pState, a_pOtherCtx); \
132	for (uint32_t i = 0; i < 64; i++) if (glGetError() == GL_NO_ERROR) break; Assert(glGetError() == GL_NO_ERROR); \
133	a_Expr; \
134	GLenum iGlError2 = glGetError(); \
135	AssertLogRelMsg(iGlError2 == GL_NO_ERROR, ("VMSVGA3d: %s -> %#x / %#x\n", #a_Expr, iGlError, iGlError2)); \
136	VMSVGA3D_SET_CURRENT_CONTEXT(a_pState, a_pContext); \
137	} \
138	} while (0)
139	#else
140	# define VMSVGA3D_INIT_CHECKED_BOTH(a_pState, a_pContext, a_pOtherCtx, a_Expr) VMSVGA3D_INIT_CHECKED(a_Expr)
141	#endif
142
143
144	/*********************************************************************************************************************************
145	* Global Variables *
146	*********************************************************************************************************************************/
147	/* Define the default light parameters as specified by MSDN. */
148	/** @todo move out; fetched from Wine */
149	const SVGA3dLightData vmsvga3d_default_light =
150	{
151	SVGA3D_LIGHTTYPE_DIRECTIONAL, /* type */
152	false, /* inWorldSpace */
153	{ 1.0f, 1.0f, 1.0f, 0.0f }, /* diffuse r,g,b,a */
154	{ 0.0f, 0.0f, 0.0f, 0.0f }, /* specular r,g,b,a */
155	{ 0.0f, 0.0f, 0.0f, 0.0f }, /* ambient r,g,b,a, */
156	{ 0.0f, 0.0f, 0.0f }, /* position x,y,z */
157	{ 0.0f, 0.0f, 1.0f }, /* direction x,y,z */
158	0.0f, /* range */
159	0.0f, /* falloff */
160	0.0f, 0.0f, 0.0f, /* attenuation 0,1,2 */
161	0.0f, /* theta */
162	0.0f /* phi */
163	};
164
165
166	/*********************************************************************************************************************************
167	* Internal Functions *
168	*********************************************************************************************************************************/
169	static int vmsvga3dContextDestroyOgl(PVGASTATE pThis, PVMSVGA3DCONTEXT pContext, uint32_t cid);
170	static void vmsvgaColor2GLFloatArray(uint32_t color, GLfloat pRed, GLfloat pGreen, GLfloat pBlue, GLfloat pAlpha);
171
172	/* Generated by VBoxDef2LazyLoad from the VBoxSVGA3D.def and VBoxSVGA3DObjC.def files. */
173	extern "C" int ExplicitlyLoadVBoxSVGA3D(bool fResolveAllImports, PRTERRINFO pErrInfo);
174
175
176	/**
177	* Checks if the given OpenGL extension is supported.
178	*
179	* @returns true if supported, false if not.
180	* @param pState The VMSVGA3d state.
181	* @param rsMinGLVersion The OpenGL version that introduced this feature
182	* into the core.
183	* @param pszWantedExtension The name of the OpenGL extension we want padded
184	* with one space at each end.
185	* @remarks Init time only.
186	*/
187	static bool vmsvga3dCheckGLExtension(PVMSVGA3DSTATE pState, float rsMinGLVersion, const char *pszWantedExtension)
188	{
189	RT_NOREF(rsMinGLVersion);
190	/* check padding. */
191	Assert(pszWantedExtension[0] == ' ');
192	Assert(pszWantedExtension[1] != ' ');
193	Assert(strchr(&pszWantedExtension[1], ' ') + 1 == strchr(pszWantedExtension, '\0'));
194
195	/* Look it up. */
196	bool fRet = false;
197	if (strstr(pState->pszExtensions, pszWantedExtension))
198	fRet = true;
199
200	/* Temporarily. Later start if (rsMinGLVersion != 0.0 && fActualGLVersion >= rsMinGLVersion) return true; */
201	#ifdef RT_OS_DARWIN
202	AssertMsg( rsMinGLVersion == 0.0
203	\|\| fRet == (pState->rsGLVersion >= rsMinGLVersion)
204	\|\| VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE == 2.1,
205	("%s actual:%d min:%d fRet=%d\n",
206	pszWantedExtension, (int)(pState->rsGLVersion * 10), (int)(rsMinGLVersion * 10), fRet));
207	#else
208	AssertMsg(rsMinGLVersion == 0.0 \|\| fRet == (pState->rsGLVersion >= rsMinGLVersion),
209	("%s actual:%d min:%d fRet=%d\n",
210	pszWantedExtension, (int)(pState->rsGLVersion * 10), (int)(rsMinGLVersion * 10), fRet));
211	#endif
212	return fRet;
213	}
214
215
216	/**
217	* Outputs GL_EXTENSIONS list to the release log.
218	*/
219	static void vmsvga3dLogRelExtensions(const char pszPrefix, const char pszExtensions)
220	{
221	/* OpenGL 3.0 interface (glGetString(GL_EXTENSIONS) return NULL). */
222	bool fBuffered = RTLogRelSetBuffering(true);
223
224	/*
225	* Determin the column widths first.
226	*/
227	size_t acchWidths[4] = { 1, 1, 1, 1 };
228	uint32_t i;
229	const char *psz = pszExtensions;
230	for (i = 0; ; i++)
231	{
232	while (*psz == ' ')
233	psz++;
234	if (!*psz)
235	break;
236
237	const char *pszEnd = strchr(psz, ' ');
238	AssertBreak(pszEnd);
239	size_t cch = pszEnd - psz;
240
241	uint32_t iColumn = i % RT_ELEMENTS(acchWidths);
242	if (acchWidths[iColumn] < cch)
243	acchWidths[iColumn] = cch;
244
245	psz = pszEnd;
246	}
247
248	/*
249	* Output it.
250	*/
251	LogRel(("VMSVGA3d: %sOpenGL extensions (%d):", pszPrefix, i));
252	psz = pszExtensions;
253	for (i = 0; ; i++)
254	{
255	while (*psz == ' ')
256	psz++;
257	if (!*psz)
258	break;
259
260	const char *pszEnd = strchr(psz, ' ');
261	AssertBreak(pszEnd);
262	size_t cch = pszEnd - psz;
263
264	uint32_t iColumn = i % RT_ELEMENTS(acchWidths);
265	if (iColumn == 0)
266	LogRel(("\nVMSVGA3d: %-.s", acchWidths[iColumn], cch, psz));
267	else if (iColumn != RT_ELEMENTS(acchWidths) - 1)
268	LogRel((" %-.s", acchWidths[iColumn], cch, psz));
269	else
270	LogRel((" %.*s", cch, psz));
271
272	psz = pszEnd;
273	}
274
275	RTLogRelSetBuffering(fBuffered);
276	LogRel(("\n"));
277	}
278
279	/**
280	* Gathers the GL_EXTENSIONS list, storing it as a space padded list at
281	* @a ppszExtensions.
282	*
283	* @returns VINF_SUCCESS or VERR_NO_STR_MEMORY
284	* @param ppszExtensions Pointer to the string pointer. Free with RTStrFree.
285	* @param fGLProfileVersion The OpenGL profile version.
286	*/
287	static int vmsvga3dGatherExtensions(char **ppszExtensions, float fGLProfileVersion)
288	{
289	int rc;
290	*ppszExtensions = NULL;
291
292	/*
293	* Try the old glGetString interface first.
294	*/
295	const char pszExtensions = (const char )glGetString(GL_EXTENSIONS);
296	if (pszExtensions)
297	{
298	rc = RTStrAAppendExN(ppszExtensions, 3, " ", (size_t)1, pszExtensions, RTSTR_MAX, " ", (size_t)1);
299	AssertLogRelRCReturn(rc, rc);
300	}
301	else
302	{
303	/*
304	* The new interface where each extension string is retrieved separately.
305	* Note! Cannot use VMSVGA3D_INIT_CHECKED_GL_GET_INTEGER_VALUE here because
306	* the above GL_EXTENSIONS error lingers on darwin. sucks.
307	*/
308	#ifndef GL_NUM_EXTENSIONS
309	# define GL_NUM_EXTENSIONS 0x821D
310	#endif
311	GLint cExtensions = 1024;
312	glGetIntegerv(GL_NUM_EXTENSIONS, &cExtensions);
313	Assert(cExtensions != 1024);
314
315	PFNGLGETSTRINGIPROC pfnGlGetStringi = (PFNGLGETSTRINGIPROC)OGLGETPROCADDRESS("glGetStringi");
316	AssertLogRelReturn(pfnGlGetStringi, VERR_NOT_SUPPORTED);
317
318	rc = RTStrAAppend(ppszExtensions, " ");
319	for (GLint i = 0; RT_SUCCESS(rc) && i < cExtensions; i++)
320	{
321	const char pszExt = (const char )pfnGlGetStringi(GL_EXTENSIONS, i);
322	if (pszExt)
323	rc = RTStrAAppendExN(ppszExtensions, 2, pfnGlGetStringi(GL_EXTENSIONS, i), RTSTR_MAX, " ", (size_t)1);
324	}
325	AssertRCReturn(rc, rc);
326	}
327
328	#if 1
329	/*
330	* Add extensions promoted into the core OpenGL profile.
331	*/
332	static const struct
333	{
334	float fGLVersion;
335	const char *pszzExtensions;
336	} s_aPromotedExtensions[] =
337	{
338	{
339	1.1f,
340	" GL_EXT_vertex_array \0"
341	" GL_EXT_polygon_offset \0"
342	" GL_EXT_blend_logic_op \0"
343	" GL_EXT_texture \0"
344	" GL_EXT_copy_texture \0"
345	" GL_EXT_subtexture \0"
346	" GL_EXT_texture_object \0"
347	" GL_ARB_framebuffer_object \0"
348	" GL_ARB_map_buffer_range \0"
349	" GL_ARB_vertex_array_object \0"
350	"\0"
351	},
352	{
353	1.2f,
354	" EXT_texture3D \0"
355	" EXT_bgra \0"
356	" EXT_packed_pixels \0"
357	" EXT_rescale_normal \0"
358	" EXT_separate_specular_color \0"
359	" SGIS_texture_edge_clamp \0"
360	" SGIS_texture_lod \0"
361	" EXT_draw_range_elements \0"
362	"\0"
363	},
364	{
365	1.3f,
366	" GL_ARB_texture_compression \0"
367	" GL_ARB_texture_cube_map \0"
368	" GL_ARB_multisample \0"
369	" GL_ARB_multitexture \0"
370	" GL_ARB_texture_env_add \0"
371	" GL_ARB_texture_env_combine \0"
372	" GL_ARB_texture_env_dot3 \0"
373	" GL_ARB_texture_border_clamp \0"
374	" GL_ARB_transpose_matrix \0"
375	"\0"
376	},
377	{
378	1.5f,
379	" GL_SGIS_generate_mipmap \0"
380	/" GL_NV_blend_equare \0"/
381	" GL_ARB_depth_texture \0"
382	" GL_ARB_shadow \0"
383	" GL_EXT_fog_coord \0"
384	" GL_EXT_multi_draw_arrays \0"
385	" GL_ARB_point_parameters \0"
386	" GL_EXT_secondary_color \0"
387	" GL_EXT_blend_func_separate \0"
388	" GL_EXT_stencil_wrap \0"
389	" GL_ARB_texture_env_crossbar \0"
390	" GL_EXT_texture_lod_bias \0"
391	" GL_ARB_texture_mirrored_repeat \0"
392	" GL_ARB_window_pos \0"
393	"\0"
394	},
395	{
396	1.6f,
397	" GL_ARB_vertex_buffer_object \0"
398	" GL_ARB_occlusion_query \0"
399	" GL_EXT_shadow_funcs \0"
400	},
401	{
402	2.0f,
403	" GL_ARB_shader_objects \0" /??/
404	" GL_ARB_vertex_shader \0" /??/
405	" GL_ARB_fragment_shader \0" /??/
406	" GL_ARB_shading_language_100 \0" /??/
407	" GL_ARB_draw_buffers \0"
408	" GL_ARB_texture_non_power_of_two \0"
409	" GL_ARB_point_sprite \0"
410	" GL_ATI_separate_stencil \0"
411	" GL_EXT_stencil_two_side \0"
412	"\0"
413	},
414	{
415	2.1f,
416	" GL_ARB_pixel_buffer_object \0"
417	" GL_EXT_texture_sRGB \0"
418	"\0"
419	},
420	{
421	3.0f,
422	" GL_ARB_framebuffer_object \0"
423	" GL_ARB_map_buffer_range \0"
424	" GL_ARB_vertex_array_object \0"
425	"\0"
426	},
427	{
428	3.1f,
429	" GL_ARB_copy_buffer \0"
430	" GL_ARB_uniform_buffer_object \0"
431	"\0"
432	},
433	{
434	3.2f,
435	" GL_ARB_vertex_array_bgra \0"
436	" GL_ARB_draw_elements_base_vertex \0"
437	" GL_ARB_fragment_coord_conventions \0"
438	" GL_ARB_provoking_vertex \0"
439	" GL_ARB_seamless_cube_map \0"
440	" GL_ARB_texture_multisample \0"
441	" GL_ARB_depth_clamp \0"
442	" GL_ARB_sync \0"
443	" GL_ARB_geometry_shader4 \0" /??/
444	"\0"
445	},
446	{
447	3.3f,
448	" GL_ARB_blend_func_extended \0"
449	" GL_ARB_sampler_objects \0"
450	" GL_ARB_explicit_attrib_location \0"
451	" GL_ARB_occlusion_query2 \0"
452	" GL_ARB_shader_bit_encoding \0"
453	" GL_ARB_texture_rgb10_a2ui \0"
454	" GL_ARB_texture_swizzle \0"
455	" GL_ARB_timer_query \0"
456	" GL_ARB_vertex_type_2_10_10_10_rev \0"
457	"\0"
458	},
459	{
460	4.0f,
461	" GL_ARB_texture_query_lod \0"
462	" GL_ARB_draw_indirect \0"
463	" GL_ARB_gpu_shader5 \0"
464	" GL_ARB_gpu_shader_fp64 \0"
465	" GL_ARB_shader_subroutine \0"
466	" GL_ARB_tessellation_shader \0"
467	" GL_ARB_texture_buffer_object_rgb32 \0"
468	" GL_ARB_texture_cube_map_array \0"
469	" GL_ARB_texture_gather \0"
470	" GL_ARB_transform_feedback2 \0"
471	" GL_ARB_transform_feedback3 \0"
472	"\0"
473	},
474	{
475	4.1f,
476	" GL_ARB_ES2_compatibility \0"
477	" GL_ARB_get_program_binary \0"
478	" GL_ARB_separate_shader_objects \0"
479	" GL_ARB_shader_precision \0"
480	" GL_ARB_vertex_attrib_64bit \0"
481	" GL_ARB_viewport_array \0"
482	"\0"
483	}
484	};
485
486	uint32_t cPromoted = 0;
487	for (uint32_t i = 0; i < RT_ELEMENTS(s_aPromotedExtensions) && s_aPromotedExtensions[i].fGLVersion <= fGLProfileVersion; i++)
488	{
489	const char *pszExt = s_aPromotedExtensions[i].pszzExtensions;
490	while (*pszExt)
491	{
492	# ifdef VBOX_STRICT
493	size_t cchExt = strlen(pszExt);
494	Assert(cchExt > 3);
495	Assert(pszExt[0] == ' ');
496	Assert(pszExt[1] != ' ');
497	Assert(pszExt[cchExt - 2] != ' ');
498	Assert(pszExt[cchExt - 1] == ' ');
499	# endif
500
501	if (strstr(*ppszExtensions, pszExt) == NULL)
502	{
503	if (cPromoted++ == 0)
504	{
505	rc = RTStrAAppend(ppszExtensions, " <promoted-extensions:> <promoted-extensions:> <promoted-extensions:> ");
506	AssertRCReturn(rc, rc);
507	}
508
509	rc = RTStrAAppend(ppszExtensions, pszExt);
510	AssertRCReturn(rc, rc);
511	}
512
513	pszExt = strchr(pszExt, '\0') + 1;
514	}
515	}
516	#endif
517
518	return VINF_SUCCESS;
519	}
520
521	/** Check whether this is an Intel GL driver.
522	*
523	* @returns true if this seems to be some Intel graphics.
524	*/
525	static bool vmsvga3dIsVendorIntel(void)
526	{
527	return RTStrNICmp((char *)glGetString(GL_VENDOR), "Intel", 5) == 0;
528	}
529
530	/**
531	* @interface_method_impl{VBOXVMSVGASHADERIF,pfnSwitchInitProfile}
532	*/
533	static DECLCALLBACK(void) vmsvga3dShaderIfSwitchInitProfile(PVBOXVMSVGASHADERIF pThis, bool fOtherProfile)
534	{
535	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
536	PVMSVGA3DSTATE pState = RT_FROM_MEMBER(pThis, VMSVGA3DSTATE, ShaderIf);
537	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pState->papContexts[fOtherProfile ? 2 : 1]);
538	#else
539	NOREF(pThis);
540	NOREF(fOtherProfile);
541	#endif
542	}
543
544
545	/**
546	* @interface_method_impl{VBOXVMSVGASHADERIF,pfnGetNextExtension}
547	*/
548	static DECLCALLBACK(bool) vmsvga3dShaderIfGetNextExtension(PVBOXVMSVGASHADERIF pThis, void **ppvEnumCtx,
549	char *pszBuf, size_t cbBuf, bool fOtherProfile)
550	{
551	PVMSVGA3DSTATE pState = RT_FROM_MEMBER(pThis, VMSVGA3DSTATE, ShaderIf);
552	const char pszCur = ppvEnumCtx ? (const char )ppvEnumCtx
553	: fOtherProfile ? pState->pszOtherExtensions : pState->pszExtensions;
554	while (*pszCur == ' ')
555	pszCur++;
556	if (!*pszCur)
557	return false;
558
559	const char *pszEnd = strchr(pszCur, ' ');
560	AssertReturn(pszEnd, false);
561	size_t cch = pszEnd - pszCur;
562	if (cch < cbBuf)
563	{
564	memcpy(pszBuf, pszCur, cch);
565	pszBuf[cch] = '\0';
566	}
567	else if (cbBuf > 0)
568	{
569	memcpy(pszBuf, "<overflow>", RT_MIN(sizeof("<overflow>"), cbBuf));
570	pszBuf[cbBuf - 1] = '\0';
571	}
572
573	ppvEnumCtx = (void )pszEnd;
574	return true;
575	}
576
577
578	/**
579	* Initializes the VMSVGA3D state during VGA device construction.
580	*
581	* Failure are generally not fatal, 3D support will just be disabled.
582	*
583	* @returns VBox status code.
584	* @param pThis The VGA device state where svga.p3dState will be modified.
585	*/
586	int vmsvga3dInit(PVGASTATE pThis)
587	{
588	AssertCompile(GL_TRUE == 1);
589	AssertCompile(GL_FALSE == 0);
590
591	/*
592	* Load and resolve imports from the external shared libraries.
593	*/
594	RTERRINFOSTATIC ErrInfo;
595	int rc = ExplicitlyLoadVBoxSVGA3D(true /fResolveAllImports/, RTErrInfoInitStatic(&ErrInfo));
596	if (RT_FAILURE(rc))
597	{
598	LogRel(("VMSVGA3d: Error loading VBoxSVGA3D and resolving necessary functions: %Rrc - %s\n", rc, ErrInfo.Core.pszMsg));
599	return rc;
600	}
601	#ifdef RT_OS_DARWIN
602	rc = ExplicitlyLoadVBoxSVGA3DObjC(true /fResolveAllImports/, RTErrInfoInitStatic(&ErrInfo));
603	if (RT_FAILURE(rc))
604	{
605	LogRel(("VMSVGA3d: Error loading VBoxSVGA3DObjC and resolving necessary functions: %Rrc - %s\n", rc, ErrInfo.Core.pszMsg));
606	return rc;
607	}
608	#endif
609
610	/*
611	* Allocate the state.
612	*/
613	pThis->svga.p3dState = (PVMSVGA3DSTATE)RTMemAllocZ(sizeof(VMSVGA3DSTATE));
614	AssertReturn(pThis->svga.p3dState, VERR_NO_MEMORY);
615
616	#ifdef RT_OS_WINDOWS
617	/* Create event semaphore and async IO thread. */
618	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
619	rc = RTSemEventCreate(&pState->WndRequestSem);
620	if (RT_SUCCESS(rc))
621	{
622	rc = RTThreadCreate(&pState->pWindowThread, vmsvga3dWindowThread, pState->WndRequestSem, 0, RTTHREADTYPE_GUI, 0,
623	"VMSVGA3DWND");
624	if (RT_SUCCESS(rc))
625	return VINF_SUCCESS;
626
627	/* bail out. */
628	LogRel(("VMSVGA3d: RTThreadCreate failed: %Rrc\n", rc));
629	RTSemEventDestroy(pState->WndRequestSem);
630	}
631	else
632	LogRel(("VMSVGA3d: RTSemEventCreate failed: %Rrc\n", rc));
633	RTMemFree(pThis->svga.p3dState);
634	pThis->svga.p3dState = NULL;
635	return rc;
636	#else
637	return VINF_SUCCESS;
638	#endif
639	}
640
641	static int vmsvga3dLoadGLFunctions(PVMSVGA3DSTATE pState)
642	{
643	/* A strict approach to get a proc address as recommended by Khronos:
644	* - "If the function is a core OpenGL function, then we need to check the OpenGL version".
645	* - "If the function is an extension, we need to check to see if the extension is supported."
646	*/
647
648	/* Get a function address, return VERR_NOT_IMPLEMENTED on failure. */
649	#define GLGETPROC_(ProcType, ProcName, NameSuffix) do { \
650	pState->ext.ProcName = (ProcType)OGLGETPROCADDRESS(#ProcName NameSuffix); \
651	AssertLogRelMsgReturn(pState->ext.ProcName, (#ProcName NameSuffix " missing"), VERR_NOT_IMPLEMENTED); \
652	} while(0)
653
654	/* Get an optional function address. LogRel on failure. */
655	#define GLGETPROCOPT_(ProcType, ProcName, NameSuffix) do { \
656	pState->ext.ProcName = (ProcType)OGLGETPROCADDRESS(#ProcName NameSuffix); \
657	if (!pState->ext.ProcName) \
658	{ \
659	LogRel(("VMSVGA3d: missing optional %s\n", #ProcName NameSuffix)); \
660	AssertFailed(); \
661	} \
662	} while(0)
663
664	/* OpenGL 2.0 or earlier core. Do not bother with extensions. */
665	GLGETPROC_(PFNGLGENQUERIESPROC , glGenQueries, "");
666	GLGETPROC_(PFNGLDELETEQUERIESPROC , glDeleteQueries, "");
667	GLGETPROC_(PFNGLBEGINQUERYPROC , glBeginQuery, "");
668	GLGETPROC_(PFNGLENDQUERYPROC , glEndQuery, "");
669	GLGETPROC_(PFNGLGETQUERYOBJECTUIVPROC , glGetQueryObjectuiv, "");
670	GLGETPROC_(PFNGLTEXIMAGE3DPROC , glTexImage3D, "");
671	GLGETPROC_(PFNGLCOMPRESSEDTEXIMAGE2DPROC , glCompressedTexImage2D, "");
672	GLGETPROC_(PFNGLCOMPRESSEDTEXIMAGE3DPROC , glCompressedTexImage3D, "");
673	GLGETPROC_(PFNGLPOINTPARAMETERFPROC , glPointParameterf, "");
674	GLGETPROC_(PFNGLBLENDEQUATIONSEPARATEPROC , glBlendEquationSeparate, "");
675	GLGETPROC_(PFNGLBLENDFUNCSEPARATEPROC , glBlendFuncSeparate, "");
676	GLGETPROC_(PFNGLSTENCILOPSEPARATEPROC , glStencilOpSeparate, "");
677	GLGETPROC_(PFNGLSTENCILFUNCSEPARATEPROC , glStencilFuncSeparate, "");
678	GLGETPROC_(PFNGLBINDBUFFERPROC , glBindBuffer, "");
679	GLGETPROC_(PFNGLDELETEBUFFERSPROC , glDeleteBuffers, "");
680	GLGETPROC_(PFNGLGENBUFFERSPROC , glGenBuffers, "");
681	GLGETPROC_(PFNGLBUFFERDATAPROC , glBufferData, "");
682	GLGETPROC_(PFNGLMAPBUFFERPROC , glMapBuffer, "");
683	GLGETPROC_(PFNGLUNMAPBUFFERPROC , glUnmapBuffer, "");
684	GLGETPROC_(PFNGLENABLEVERTEXATTRIBARRAYPROC , glEnableVertexAttribArray, "");
685	GLGETPROC_(PFNGLDISABLEVERTEXATTRIBARRAYPROC , glDisableVertexAttribArray, "");
686	GLGETPROC_(PFNGLVERTEXATTRIBPOINTERPROC , glVertexAttribPointer, "");
687	GLGETPROC_(PFNGLACTIVETEXTUREPROC , glActiveTexture, "");
688	/* glGetProgramivARB determines implementation limits for the program
689	* target (GL_FRAGMENT_PROGRAM_ARB, GL_VERTEX_PROGRAM_ARB).
690	* It differs from glGetProgramiv, which returns a parameter from a program object.
691	*/
692	GLGETPROC_(PFNGLGETPROGRAMIVARBPROC , glGetProgramivARB, "");
693	GLGETPROC_(PFNGLFOGCOORDPOINTERPROC , glFogCoordPointer, "");
694	#if VBOX_VMSVGA3D_GL_HACK_LEVEL < 0x102
695	GLGETPROC_(PFNGLBLENDCOLORPROC , glBlendColor, "");
696	GLGETPROC_(PFNGLBLENDEQUATIONPROC , glBlendEquation, "");
697	#endif
698	#if VBOX_VMSVGA3D_GL_HACK_LEVEL < 0x103
699	GLGETPROC_(PFNGLCLIENTACTIVETEXTUREPROC , glClientActiveTexture, "");
700	#endif
701
702	/* OpenGL 3.0 core, GL_ARB_instanced_arrays. Same functions names in the ARB and core specs. */
703	if ( pState->rsGLVersion >= 3.0f
704	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_framebuffer_object "))
705	{
706	GLGETPROC_(PFNGLISRENDERBUFFERPROC , glIsRenderbuffer, "");
707	GLGETPROC_(PFNGLBINDRENDERBUFFERPROC , glBindRenderbuffer, "");
708	GLGETPROC_(PFNGLDELETERENDERBUFFERSPROC , glDeleteRenderbuffers, "");
709	GLGETPROC_(PFNGLGENRENDERBUFFERSPROC , glGenRenderbuffers, "");
710	GLGETPROC_(PFNGLRENDERBUFFERSTORAGEPROC , glRenderbufferStorage, "");
711	GLGETPROC_(PFNGLGETRENDERBUFFERPARAMETERIVPROC , glGetRenderbufferParameteriv, "");
712	GLGETPROC_(PFNGLISFRAMEBUFFERPROC , glIsFramebuffer, "");
713	GLGETPROC_(PFNGLBINDFRAMEBUFFERPROC , glBindFramebuffer, "");
714	GLGETPROC_(PFNGLDELETEFRAMEBUFFERSPROC , glDeleteFramebuffers, "");
715	GLGETPROC_(PFNGLGENFRAMEBUFFERSPROC , glGenFramebuffers, "");
716	GLGETPROC_(PFNGLCHECKFRAMEBUFFERSTATUSPROC , glCheckFramebufferStatus, "");
717	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE1DPROC , glFramebufferTexture1D, "");
718	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE2DPROC , glFramebufferTexture2D, "");
719	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE3DPROC , glFramebufferTexture3D, "");
720	GLGETPROC_(PFNGLFRAMEBUFFERRENDERBUFFERPROC , glFramebufferRenderbuffer, "");
721	GLGETPROC_(PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC , glGetFramebufferAttachmentParameteriv, "");
722	GLGETPROC_(PFNGLGENERATEMIPMAPPROC , glGenerateMipmap, "");
723	GLGETPROC_(PFNGLBLITFRAMEBUFFERPROC , glBlitFramebuffer, "");
724	GLGETPROC_(PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC , glRenderbufferStorageMultisample, "");
725	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURELAYERPROC , glFramebufferTextureLayer, "");
726	}
727
728	/* OpenGL 3.1 core, GL_ARB_draw_instanced, GL_EXT_draw_instanced. */
729	if (pState->rsGLVersion >= 3.1f)
730	{
731	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "");
732	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "");
733	}
734	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_draw_instanced "))
735	{
736	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "ARB");
737	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "ARB");
738	}
739	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_draw_instanced "))
740	{
741	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "EXT");
742	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "EXT");
743	}
744
745	/* OpenGL 3.2 core, GL_ARB_draw_elements_base_vertex. Same functions names in the ARB and core specs. */
746	if ( pState->rsGLVersion >= 3.2f
747	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_draw_elements_base_vertex "))
748	{
749	GLGETPROC_(PFNGLDRAWELEMENTSBASEVERTEXPROC , glDrawElementsBaseVertex, "");
750	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC , glDrawElementsInstancedBaseVertex, "");
751	}
752
753	/* Optional. OpenGL 3.2 core, GL_ARB_provoking_vertex. Same functions names in the ARB and core specs. */
754	if ( pState->rsGLVersion >= 3.2f
755	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_provoking_vertex "))
756	{
757	GLGETPROCOPT_(PFNGLPROVOKINGVERTEXPROC , glProvokingVertex, "");
758	}
759
760	/* OpenGL 3.3 core, GL_ARB_instanced_arrays. */
761	if (pState->rsGLVersion >= 3.3f)
762	{
763	GLGETPROC_(PFNGLVERTEXATTRIBDIVISORPROC , glVertexAttribDivisor, "");
764	}
765	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_instanced_arrays "))
766	{
767	GLGETPROC_(PFNGLVERTEXATTRIBDIVISORARBPROC , glVertexAttribDivisor, "ARB");
768	}
769
770	#undef GLGETPROCOPT_
771	#undef GLGETPROC_
772
773	return VINF_SUCCESS;
774	}
775
776
777	/* We must delay window creation until the PowerOn phase. Init is too early and will cause failures. */
778	int vmsvga3dPowerOn(PVGASTATE pThis)
779	{
780	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
781	AssertReturn(pThis->svga.p3dState, VERR_NO_MEMORY);
782	PVMSVGA3DCONTEXT pContext;
783	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
784	PVMSVGA3DCONTEXT pOtherCtx;
785	#endif
786	int rc;
787
788	if (pState->rsGLVersion != 0.0)
789	return VINF_SUCCESS; /* already initialized (load state) */
790
791	/*
792	* OpenGL function calls aren't possible without a valid current context, so create a fake one here.
793	*/
794	rc = vmsvga3dContextDefineOgl(pThis, 1, VMSVGA3D_DEF_CTX_F_INIT);
795	AssertRCReturn(rc, rc);
796
797	pContext = pState->papContexts[1];
798	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
799
800	LogRel(("VMSVGA3d: OpenGL version: %s\n"
801	"VMSVGA3d: OpenGL Vendor: %s\n"
802	"VMSVGA3d: OpenGL Renderer: %s\n"
803	"VMSVGA3d: OpenGL shader language version: %s\n",
804	glGetString(GL_VERSION), glGetString(GL_VENDOR), glGetString(GL_RENDERER),
805	glGetString(GL_SHADING_LANGUAGE_VERSION)));
806
807	rc = vmsvga3dGatherExtensions(&pState->pszExtensions, VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE);
808	AssertRCReturn(rc, rc);
809	vmsvga3dLogRelExtensions("", pState->pszExtensions);
810
811	pState->rsGLVersion = atof((const char *)glGetString(GL_VERSION));
812
813
814	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
815	/*
816	* Get the extension list for the alternative profile so we can better
817	* figure out the shader model and stuff.
818	*/
819	rc = vmsvga3dContextDefineOgl(pThis, 2, VMSVGA3D_DEF_CTX_F_INIT \| VMSVGA3D_DEF_CTX_F_OTHER_PROFILE);
820	AssertLogRelRCReturn(rc, rc);
821	pContext = pState->papContexts[1]; /* Array may have been reallocated. */
822
823	pOtherCtx = pState->papContexts[2];
824	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
825
826	LogRel(("VMSVGA3d: Alternative OpenGL version: %s\n"
827	"VMSVGA3d: Alternative OpenGL Vendor: %s\n"
828	"VMSVGA3d: Alternative OpenGL Renderer: %s\n"
829	"VMSVGA3d: Alternative OpenGL shader language version: %s\n",
830	glGetString(GL_VERSION), glGetString(GL_VENDOR), glGetString(GL_RENDERER),
831	glGetString(GL_SHADING_LANGUAGE_VERSION)));
832
833	rc = vmsvga3dGatherExtensions(&pState->pszOtherExtensions, VBOX_VMSVGA3D_OTHER_OGL_PROFILE);
834	AssertRCReturn(rc, rc);
835	vmsvga3dLogRelExtensions("Alternative ", pState->pszOtherExtensions);
836
837	pState->rsOtherGLVersion = atof((const char *)glGetString(GL_VERSION));
838
839	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
840	#else
841	pState->pszOtherExtensions = (char *)"";
842	pState->rsOtherGLVersion = pState->rsGLVersion;
843	#endif
844
845	/*
846	* Resolve GL function pointers and store them in pState->ext.
847	*/
848	rc = vmsvga3dLoadGLFunctions(pState);
849	if (RT_FAILURE(rc))
850	{
851	LogRel(("VMSVGA3d: missing required OpenGL function or extension; aborting\n"));
852	return rc;
853	}
854
855	/*
856	* Initialize the capabilities with sensible defaults.
857	*/
858	pState->caps.maxActiveLights = 1;
859	pState->caps.maxTextureBufferSize = 65536;
860	pState->caps.maxTextures = 1;
861	pState->caps.maxClipDistances = 4;
862	pState->caps.maxColorAttachments = 1;
863	pState->caps.maxRectangleTextureSize = 2048;
864	pState->caps.maxTextureAnisotropy = 2;
865	pState->caps.maxVertexShaderInstructions = 1024;
866	pState->caps.maxFragmentShaderInstructions = 1024;
867	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_NONE;
868	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_NONE;
869	pState->caps.flPointSize[0] = 1;
870	pState->caps.flPointSize[1] = 1;
871
872	/*
873	* Query capabilities
874	*/
875	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetIntegerv(GL_MAX_LIGHTS, &pState->caps.maxActiveLights));
876	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetIntegerv(GL_MAX_TEXTURE_BUFFER_SIZE, &pState->caps.maxTextureBufferSize));
877	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &pState->caps.maxTextures));
878	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE /* The alternative profile has a higher number here (ati/darwin). */
879	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
880	VMSVGA3D_INIT_CHECKED_BOTH(pState, pOtherCtx, pContext, glGetIntegerv(GL_MAX_CLIP_DISTANCES, &pState->caps.maxClipDistances));
881	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
882	#else
883	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_CLIP_DISTANCES, &pState->caps.maxClipDistances));
884	#endif
885	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS, &pState->caps.maxColorAttachments));
886	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_RECTANGLE_TEXTURE_SIZE, &pState->caps.maxRectangleTextureSize));
887	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &pState->caps.maxTextureAnisotropy));
888	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, pState->caps.flPointSize));
889
890	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
891	pState->ext.glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB,
892	&pState->caps.maxFragmentShaderTemps));
893	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
894	pState->ext.glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB,
895	&pState->caps.maxFragmentShaderInstructions));
896	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
897	pState->ext.glGetProgramivARB(GL_VERTEX_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB,
898	&pState->caps.maxVertexShaderTemps));
899	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
900	pState->ext.glGetProgramivARB(GL_VERTEX_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB,
901	&pState->caps.maxVertexShaderInstructions));
902
903	pState->caps.fS3TCSupported = vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_texture_compression_s3tc ");
904
905	/* http://http://www.opengl.org/wiki/Detecting_the_Shader_Model
906	* ARB Assembly Language
907	* These are done through testing the presence of extensions. You should test them in this order:
908	* GL_NV_gpu_program4: SM 4.0 or better.
909	* GL_NV_vertex_program3: SM 3.0 or better.
910	* GL_ARB_fragment_program: SM 2.0 or better.
911	* ATI does not support higher than SM 2.0 functionality in assembly shaders.
912	*
913	*/
914	/** @todo distinguish between vertex and pixel shaders??? */
915	const char pszShadingLanguageVersion = (const char )glGetString(GL_SHADING_LANGUAGE_VERSION);
916	float v = pszShadingLanguageVersion ? atof(pszShadingLanguageVersion) : 0.0f;
917	if (v >= 3.30f)
918	{
919	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_40;
920	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_40;
921	}
922	else
923	if (v >= 1.20f)
924	{
925	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_20;
926	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_20;
927	}
928	else
929	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_NV_gpu_program4 ")
930	\|\| strstr(pState->pszOtherExtensions, " GL_NV_gpu_program4 "))
931	{
932	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_40;
933	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_40;
934	}
935	else
936	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_NV_vertex_program3 ")
937	\|\| strstr(pState->pszOtherExtensions, " GL_NV_vertex_program3 ")
938	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_shader_texture_lod ") /* Wine claims this suggests SM 3.0 support */
939	\|\| strstr(pState->pszOtherExtensions, " GL_ARB_shader_texture_lod ")
940	)
941	{
942	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_30;
943	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_30;
944	}
945	else
946	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_fragment_program ")
947	\|\| strstr(pState->pszOtherExtensions, " GL_ARB_fragment_program "))
948	{
949	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_20;
950	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_20;
951	}
952	else
953	{
954	LogRel(("VMSVGA3D: WARNING: unknown support for assembly shaders!!\n"));
955	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_11;
956	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_11;
957	}
958
959	if ( !vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_vertex_array_bgra ")
960	&& !vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_vertex_array_bgra "))
961	{
962	LogRel(("VMSVGA3D: WARNING: Missing required extension GL_ARB_vertex_array_bgra (d3dcolor)!!!\n"));
963	}
964
965	/*
966	* Tweak capabilities.
967	*/
968	/* Intel Windows drivers return 31, while the guest expects 32 at least. */
969	if ( pState->caps.maxVertexShaderTemps < 32
970	&& vmsvga3dIsVendorIntel())
971	pState->caps.maxVertexShaderTemps = 32;
972
973	#if 0
974	SVGA3D_DEVCAP_MAX_FIXED_VERTEXBLEND = 11,
975	SVGA3D_DEVCAP_QUERY_TYPES = 15,
976	SVGA3D_DEVCAP_TEXTURE_GRADIENT_SAMPLING = 16,
977	SVGA3D_DEVCAP_MAX_POINT_SIZE = 17,
978	SVGA3D_DEVCAP_MAX_SHADER_TEXTURES = 18,
979	SVGA3D_DEVCAP_MAX_VOLUME_EXTENT = 21,
980	SVGA3D_DEVCAP_MAX_TEXTURE_REPEAT = 22,
981	SVGA3D_DEVCAP_MAX_TEXTURE_ASPECT_RATIO = 23,
982	SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY = 24,
983	SVGA3D_DEVCAP_MAX_PRIMITIVE_COUNT = 25,
984	SVGA3D_DEVCAP_MAX_VERTEX_INDEX = 26,
985	SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_INSTRUCTIONS = 28,
986	SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS = 29,
987	SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS = 30,
988	SVGA3D_DEVCAP_TEXTURE_OPS = 31,
989	SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8 = 32,
990	SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8 = 33,
991	SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10 = 34,
992	SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5 = 35,
993	SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5 = 36,
994	SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4 = 37,
995	SVGA3D_DEVCAP_SURFACEFMT_R5G6B5 = 38,
996	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16 = 39,
997	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8 = 40,
998	SVGA3D_DEVCAP_SURFACEFMT_ALPHA8 = 41,
999	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8 = 42,
1000	SVGA3D_DEVCAP_SURFACEFMT_Z_D16 = 43,
1001	SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8 = 44,
1002	SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8 = 45,
1003	SVGA3D_DEVCAP_SURFACEFMT_DXT1 = 46,
1004	SVGA3D_DEVCAP_SURFACEFMT_DXT2 = 47,
1005	SVGA3D_DEVCAP_SURFACEFMT_DXT3 = 48,
1006	SVGA3D_DEVCAP_SURFACEFMT_DXT4 = 49,
1007	SVGA3D_DEVCAP_SURFACEFMT_DXT5 = 50,
1008	SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8 = 51,
1009	SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10 = 52,
1010	SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8 = 53,
1011	SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8 = 54,
1012	SVGA3D_DEVCAP_SURFACEFMT_CxV8U8 = 55,
1013	SVGA3D_DEVCAP_SURFACEFMT_R_S10E5 = 56,
1014	SVGA3D_DEVCAP_SURFACEFMT_R_S23E8 = 57,
1015	SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5 = 58,
1016	SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8 = 59,
1017	SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5 = 60,
1018	SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8 = 61,
1019	SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEXTURES = 63,
1020	SVGA3D_DEVCAP_SURFACEFMT_V16U16 = 65,
1021	SVGA3D_DEVCAP_SURFACEFMT_G16R16 = 66,
1022	SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16 = 67,
1023	SVGA3D_DEVCAP_SURFACEFMT_UYVY = 68,
1024	SVGA3D_DEVCAP_SURFACEFMT_YUY2 = 69,
1025	SVGA3D_DEVCAP_MULTISAMPLE_NONMASKABLESAMPLES = 70,
1026	SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES = 71,
1027	SVGA3D_DEVCAP_ALPHATOCOVERAGE = 72,
1028	SVGA3D_DEVCAP_SUPERSAMPLE = 73,
1029	SVGA3D_DEVCAP_AUTOGENMIPMAPS = 74,
1030	SVGA3D_DEVCAP_SURFACEFMT_NV12 = 75,
1031	SVGA3D_DEVCAP_SURFACEFMT_AYUV = 76,
1032	SVGA3D_DEVCAP_SURFACEFMT_Z_DF16 = 79,
1033	SVGA3D_DEVCAP_SURFACEFMT_Z_DF24 = 80,
1034	SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT = 81,
1035	SVGA3D_DEVCAP_SURFACEFMT_BC4_UNORM = 82,
1036	SVGA3D_DEVCAP_SURFACEFMT_BC5_UNORM = 83,
1037	#endif
1038
1039	LogRel(("VMSVGA3d: Capabilities:\n"));
1040	LogRel(("VMSVGA3d: maxActiveLights=%-2d maxTextures=%-2d maxTextureBufferSize=%d\n",
1041	pState->caps.maxActiveLights, pState->caps.maxTextures, pState->caps.maxTextureBufferSize));
1042	LogRel(("VMSVGA3d: maxClipDistances=%-2d maxColorAttachments=%-2d maxClipDistances=%d\n",
1043	pState->caps.maxClipDistances, pState->caps.maxColorAttachments, pState->caps.maxClipDistances));
1044	LogRel(("VMSVGA3d: maxColorAttachments=%-2d maxTextureAnisotropy=%-2d maxRectangleTextureSize=%d\n",
1045	pState->caps.maxColorAttachments, pState->caps.maxTextureAnisotropy, pState->caps.maxRectangleTextureSize));
1046	LogRel(("VMSVGA3d: maxVertexShaderTemps=%-2d maxVertexShaderInstructions=%d maxFragmentShaderInstructions=%d\n",
1047	pState->caps.maxVertexShaderTemps, pState->caps.maxVertexShaderInstructions, pState->caps.maxFragmentShaderInstructions));
1048	LogRel(("VMSVGA3d: maxFragmentShaderTemps=%d flPointSize={%d.%02u, %d.%02u}\n",
1049	pState->caps.maxFragmentShaderTemps,
1050	(int)pState->caps.flPointSize[0], (int)(pState->caps.flPointSize[0] * 100) % 100,
1051	(int)pState->caps.flPointSize[1], (int)(pState->caps.flPointSize[1] * 100) % 100));
1052	LogRel(("VMSVGA3d: fragmentShaderVersion=%-2d vertexShaderVersion=%-2d fS3TCSupported=%d\n",
1053	pState->caps.fragmentShaderVersion, pState->caps.vertexShaderVersion, pState->caps.fS3TCSupported));
1054
1055
1056	/* Initialize the shader library. */
1057	pState->ShaderIf.pfnSwitchInitProfile = vmsvga3dShaderIfSwitchInitProfile;
1058	pState->ShaderIf.pfnGetNextExtension = vmsvga3dShaderIfGetNextExtension;
1059	rc = ShaderInitLib(&pState->ShaderIf);
1060	AssertRC(rc);
1061
1062	/* Cleanup */
1063	rc = vmsvga3dContextDestroy(pThis, 1);
1064	AssertRC(rc);
1065	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
1066	rc = vmsvga3dContextDestroy(pThis, 2);
1067	AssertRC(rc);
1068	#endif
1069
1070	if ( pState->rsGLVersion < 3.0
1071	&& pState->rsOtherGLVersion < 3.0 /* darwin: legacy profile hack */)
1072	{
1073	LogRel(("VMSVGA3d: unsupported OpenGL version; minimum is 3.0\n"));
1074	return VERR_NOT_IMPLEMENTED;
1075	}
1076
1077	#ifdef DEBUG_DEBUG_GFX_WINDOW_TEST_CONTEXT
1078	pState->idTestContext = SVGA_ID_INVALID;
1079	#endif
1080	return VINF_SUCCESS;
1081	}
1082
1083	int vmsvga3dReset(PVGASTATE pThis)
1084	{
1085	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
1086	AssertReturn(pThis->svga.p3dState, VERR_NO_MEMORY);
1087
1088	/* Destroy all leftover surfaces. */
1089	for (uint32_t i = 0; i < pState->cSurfaces; i++)
1090	{
1091	if (pState->papSurfaces[i]->id != SVGA3D_INVALID_ID)
1092	vmsvga3dSurfaceDestroy(pThis, pState->papSurfaces[i]->id);
1093	}
1094
1095	/* Destroy all leftover contexts. */
1096	for (uint32_t i = 0; i < pState->cContexts; i++)
1097	{
1098	if (pState->papContexts[i]->id != SVGA3D_INVALID_ID)
1099	vmsvga3dContextDestroy(pThis, pState->papContexts[i]->id);
1100	}
1101
1102	if (pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
1103	vmsvga3dContextDestroyOgl(pThis, &pState->SharedCtx, VMSVGA3D_SHARED_CTX_ID);
1104
1105	return VINF_SUCCESS;
1106	}
1107
1108	int vmsvga3dTerminate(PVGASTATE pThis)
1109	{
1110	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
1111	AssertReturn(pState, VERR_WRONG_ORDER);
1112	int rc;
1113
1114	rc = vmsvga3dReset(pThis);
1115	AssertRCReturn(rc, rc);
1116
1117	/* Terminate the shader library. */
1118	rc = ShaderDestroyLib();
1119	AssertRC(rc);
1120
1121	#ifdef RT_OS_WINDOWS
1122	/* Terminate the window creation thread. */
1123	rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_EXIT, 0, 0);
1124	AssertRCReturn(rc, rc);
1125
1126	RTSemEventDestroy(pState->WndRequestSem);
1127	#elif defined(RT_OS_DARWIN)
1128
1129	#elif defined(RT_OS_LINUX)
1130	/* signal to the thread that it is supposed to exit */
1131	pState->bTerminate = true;
1132	/* wait for it to terminate */
1133	rc = RTThreadWait(pState->pWindowThread, 10000, NULL);
1134	AssertRC(rc);
1135	XCloseDisplay(pState->display);
1136	#endif
1137
1138	RTStrFree(pState->pszExtensions);
1139	pState->pszExtensions = NULL;
1140	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
1141	RTStrFree(pState->pszOtherExtensions);
1142	#endif
1143	pState->pszOtherExtensions = NULL;
1144
1145	return VINF_SUCCESS;
1146	}
1147
1148
1149	void vmsvga3dUpdateHostScreenViewport(PVGASTATE pThis, uint32_t idScreen, VMSVGAVIEWPORT const *pOldViewport)
1150	{
1151	/** @todo Move the visible framebuffer content here, don't wait for the guest to
1152	* redraw it. */
1153
1154	#ifdef RT_OS_DARWIN
1155	RT_NOREF(pOldViewport);
1156	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
1157	if ( pState
1158	&& idScreen == 0
1159	&& pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
1160	{
1161	vmsvga3dCocoaViewUpdateViewport(pState->SharedCtx.cocoaView);
1162	}
1163	#else
1164	RT_NOREF(pThis, idScreen, pOldViewport);
1165	#endif
1166	}
1167
1168
1169	/**
1170	* Worker for vmsvga3dQueryCaps that figures out supported operations for a
1171	* given surface format capability.
1172	*
1173	* @returns Supported/indented operations (SVGA3DFORMAT_OP_XXX).
1174	* @param idx3dCaps The SVGA3D_CAPS_XXX value of the surface format.
1175	*
1176	* @remarks See fromat_cap_table in svga_format.c (mesa/gallium) for a reference
1177	* of implicit guest expectations:
1178	* http://cgit.freedesktop.org/mesa/mesa/tree/src/gallium/drivers/svga/svga_format.c
1179	*/
1180	static uint32_t vmsvga3dGetSurfaceFormatSupport(uint32_t idx3dCaps)
1181	{
1182	uint32_t result = 0;
1183
1184	/** @todo missing:
1185	*
1186	* SVGA3DFORMAT_OP_PIXELSIZE
1187	*/
1188
1189	switch (idx3dCaps)
1190	{
1191	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1192	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1193	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1194	result \|= SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB
1195	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1196	\| SVGA3DFORMAT_OP_DISPLAYMODE /* Should not be set for alpha formats. */
1197	\| SVGA3DFORMAT_OP_3DACCELERATION; /* implies OP_DISPLAYMODE */
1198	break;
1199
1200	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1201	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1202	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1203	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1204	result \|= SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB
1205	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1206	\| SVGA3DFORMAT_OP_SAME_FORMAT_UP_TO_ALPHA_RENDERTARGET;
1207	break;
1208	}
1209
1210	/** @todo check hardware caps! */
1211	switch (idx3dCaps)
1212	{
1213	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1214	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1215	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1216	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1217	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1218	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1219	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1220	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16:
1221	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8:
1222	case SVGA3D_DEVCAP_SURFACEFMT_ALPHA8:
1223	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8:
1224	result \|= SVGA3DFORMAT_OP_TEXTURE
1225	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
1226	\| SVGA3DFORMAT_OP_OFFSCREENPLAIN
1227	\| SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET
1228	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1229	\| SVGA3DFORMAT_OP_CUBETEXTURE
1230	\| SVGA3DFORMAT_OP_SRGBREAD
1231	\| SVGA3DFORMAT_OP_SRGBWRITE;
1232	break;
1233
1234	case SVGA3D_DEVCAP_SURFACEFMT_Z_D16:
1235	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8:
1236	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8:
1237	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF16:
1238	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF24:
1239	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT:
1240	result \|= SVGA3DFORMAT_OP_ZSTENCIL
1241	\| SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH
1242	\| SVGA3DFORMAT_OP_TEXTURE /* Necessary for Ubuntu Unity */;
1243	break;
1244
1245	case SVGA3D_DEVCAP_SURFACEFMT_DXT1:
1246	case SVGA3D_DEVCAP_SURFACEFMT_DXT3:
1247	case SVGA3D_DEVCAP_SURFACEFMT_DXT5:
1248	result \|= SVGA3DFORMAT_OP_TEXTURE
1249	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1250	\| SVGA3DFORMAT_OP_CUBETEXTURE
1251	\| SVGA3DFORMAT_OP_SRGBREAD;
1252	break;
1253
1254	case SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8:
1255	case SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10:
1256	case SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8:
1257	case SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8:
1258	case SVGA3D_DEVCAP_SURFACEFMT_CxV8U8:
1259	break;
1260
1261	case SVGA3D_DEVCAP_SURFACEFMT_R_S10E5:
1262	case SVGA3D_DEVCAP_SURFACEFMT_R_S23E8:
1263	case SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5:
1264	case SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8:
1265	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5:
1266	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8:
1267	break;
1268
1269	case SVGA3D_DEVCAP_SURFACEFMT_V16U16:
1270	case SVGA3D_DEVCAP_SURFACEFMT_G16R16:
1271	case SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16:
1272
1273	case SVGA3D_DEVCAP_SURFACEFMT_UYVY:
1274	case SVGA3D_DEVCAP_SURFACEFMT_YUY2:
1275	case SVGA3D_DEVCAP_SURFACEFMT_NV12:
1276	case SVGA3D_DEVCAP_SURFACEFMT_AYUV:
1277	break;
1278	}
1279	Log(("CAPS: %s =\n%s\n", vmsvga3dGetCapString(idx3dCaps), vmsvga3dGet3dFormatString(result)));
1280
1281	return result;
1282	}
1283
1284	#if 0 /* unused */
1285	static uint32_t vmsvga3dGetDepthFormatSupport(PVMSVGA3DSTATE pState3D, uint32_t idx3dCaps)
1286	{
1287	RT_NOREF(pState3D, idx3dCaps);
1288
1289	/** @todo test this somehow */
1290	uint32_t result = SVGA3DFORMAT_OP_ZSTENCIL \| SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH;
1291
1292	Log(("CAPS: %s =\n%s\n", vmsvga3dGetCapString(idx3dCaps), vmsvga3dGet3dFormatString(result)));
1293	return result;
1294	}
1295	#endif
1296
1297
1298	int vmsvga3dQueryCaps(PVGASTATE pThis, uint32_t idx3dCaps, uint32_t *pu32Val)
1299	{
1300	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
1301	AssertReturn(pState, VERR_NO_MEMORY);
1302	int rc = VINF_SUCCESS;
1303
1304	*pu32Val = 0;
1305
1306	/*
1307	* The capabilities access by current (2015-03-01) linux sources (gallium,
1308	* vmwgfx, xorg-video-vmware) are annotated, caps without xref annotations
1309	* aren't access.
1310	*/
1311
1312	switch (idx3dCaps)
1313	{
1314	/* Linux: vmwgfx_fifo.c in kmod; only used with SVGA_CAP_GBOBJECTS. */
1315	case SVGA3D_DEVCAP_3D:
1316	pu32Val = 1; / boolean? */
1317	break;
1318
1319	case SVGA3D_DEVCAP_MAX_LIGHTS:
1320	*pu32Val = pState->caps.maxActiveLights;
1321	break;
1322
1323	case SVGA3D_DEVCAP_MAX_TEXTURES:
1324	*pu32Val = pState->caps.maxTextures;
1325	break;
1326
1327	case SVGA3D_DEVCAP_MAX_CLIP_PLANES:
1328	*pu32Val = pState->caps.maxClipDistances;
1329	break;
1330
1331	/* Linux: svga_screen.c in gallium; 3.0 or later required. */
1332	case SVGA3D_DEVCAP_VERTEX_SHADER_VERSION:
1333	*pu32Val = pState->caps.vertexShaderVersion;
1334	break;
1335
1336	case SVGA3D_DEVCAP_VERTEX_SHADER:
1337	/* boolean? */
1338	*pu32Val = (pState->caps.vertexShaderVersion != SVGA3DVSVERSION_NONE);
1339	break;
1340
1341	/* Linux: svga_screen.c in gallium; 3.0 or later required. */
1342	case SVGA3D_DEVCAP_FRAGMENT_SHADER_VERSION:
1343	*pu32Val = pState->caps.fragmentShaderVersion;
1344	break;
1345
1346	case SVGA3D_DEVCAP_FRAGMENT_SHADER:
1347	/* boolean? */
1348	*pu32Val = (pState->caps.fragmentShaderVersion != SVGA3DPSVERSION_NONE);
1349	break;
1350
1351	case SVGA3D_DEVCAP_S23E8_TEXTURES:
1352	case SVGA3D_DEVCAP_S10E5_TEXTURES:
1353	/* Must be obsolete by now; surface format caps specify the same thing. */
1354	rc = VERR_INVALID_PARAMETER;
1355	break;
1356
1357	case SVGA3D_DEVCAP_MAX_FIXED_VERTEXBLEND:
1358	break;
1359
1360	/*
1361	* 2. The BUFFER_FORMAT capabilities are deprecated, and they always
1362	* return TRUE. Even on physical hardware that does not support
1363	* these formats natively, the SVGA3D device will provide an emulation
1364	* which should be invisible to the guest OS.
1365	*/
1366	case SVGA3D_DEVCAP_D16_BUFFER_FORMAT:
1367	case SVGA3D_DEVCAP_D24S8_BUFFER_FORMAT:
1368	case SVGA3D_DEVCAP_D24X8_BUFFER_FORMAT:
1369	*pu32Val = 1;
1370	break;
1371
1372	case SVGA3D_DEVCAP_QUERY_TYPES:
1373	break;
1374
1375	case SVGA3D_DEVCAP_TEXTURE_GRADIENT_SAMPLING:
1376	break;
1377
1378	/* Linux: svga_screen.c in gallium; capped at 80.0, default 1.0. */
1379	case SVGA3D_DEVCAP_MAX_POINT_SIZE:
1380	AssertCompile(sizeof(uint32_t) == sizeof(float));
1381	(float )pu32Val = pState->caps.flPointSize[1];
1382	break;
1383
1384	case SVGA3D_DEVCAP_MAX_SHADER_TEXTURES:
1385	/** @todo ?? */
1386	rc = VERR_INVALID_PARAMETER;
1387	break;
1388
1389	/* Linux: svga_screen.c in gallium (for PIPE_CAP_MAX_TEXTURE_2D_LEVELS); have default if missing. */
1390	case SVGA3D_DEVCAP_MAX_TEXTURE_WIDTH:
1391	case SVGA3D_DEVCAP_MAX_TEXTURE_HEIGHT:
1392	*pu32Val = pState->caps.maxRectangleTextureSize;
1393	break;
1394
1395	/* Linux: svga_screen.c in gallium (for PIPE_CAP_MAX_TEXTURE_3D_LEVELS); have default if missing. */
1396	case SVGA3D_DEVCAP_MAX_VOLUME_EXTENT:
1397	//*pu32Val = pCaps->MaxVolumeExtent;
1398	*pu32Val = 256;
1399	break;
1400
1401	case SVGA3D_DEVCAP_MAX_TEXTURE_REPEAT:
1402	pu32Val = 32768; / hardcoded in Wine */
1403	break;
1404
1405	case SVGA3D_DEVCAP_MAX_TEXTURE_ASPECT_RATIO:
1406	//*pu32Val = pCaps->MaxTextureAspectRatio;
1407	break;
1408
1409	/* Linux: svga_screen.c in gallium (for PIPE_CAPF_MAX_TEXTURE_ANISOTROPY); defaults to 4.0. */
1410	case SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY:
1411	*pu32Val = pState->caps.maxTextureAnisotropy;
1412	break;
1413
1414	case SVGA3D_DEVCAP_MAX_PRIMITIVE_COUNT:
1415	case SVGA3D_DEVCAP_MAX_VERTEX_INDEX:
1416	pu32Val = 0xFFFFF; / hardcoded in Wine */
1417	break;
1418
1419	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_VERTEX/PIPE_SHADER_CAP_MAX_INSTRUCTIONS); defaults to 512. */
1420	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_INSTRUCTIONS:
1421	*pu32Val = pState->caps.maxVertexShaderInstructions;
1422	break;
1423
1424	case SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_INSTRUCTIONS:
1425	*pu32Val = pState->caps.maxFragmentShaderInstructions;
1426	break;
1427
1428	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_VERTEX/PIPE_SHADER_CAP_MAX_TEMPS); defaults to 32. */
1429	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS:
1430	*pu32Val = pState->caps.maxVertexShaderTemps;
1431	break;
1432
1433	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_FRAGMENT/PIPE_SHADER_CAP_MAX_TEMPS); defaults to 32. */
1434	case SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS:
1435	*pu32Val = pState->caps.maxFragmentShaderTemps;
1436	break;
1437
1438	case SVGA3D_DEVCAP_TEXTURE_OPS:
1439	break;
1440
1441	case SVGA3D_DEVCAP_MULTISAMPLE_NONMASKABLESAMPLES:
1442	break;
1443
1444	case SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES:
1445	break;
1446
1447	case SVGA3D_DEVCAP_ALPHATOCOVERAGE:
1448	break;
1449
1450	case SVGA3D_DEVCAP_SUPERSAMPLE:
1451	break;
1452
1453	case SVGA3D_DEVCAP_AUTOGENMIPMAPS:
1454	//*pu32Val = !!(pCaps->Caps2 & D3DCAPS2_CANAUTOGENMIPMAP);
1455	break;
1456
1457	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEXTURES:
1458	break;
1459
1460	case SVGA3D_DEVCAP_MAX_RENDER_TARGETS: /** @todo same thing? */
1461	case SVGA3D_DEVCAP_MAX_SIMULTANEOUS_RENDER_TARGETS:
1462	*pu32Val = pState->caps.maxColorAttachments;
1463	break;
1464
1465	/*
1466	* This is the maximum number of SVGA context IDs that the guest
1467	* can define using SVGA_3D_CMD_CONTEXT_DEFINE.
1468	*/
1469	case SVGA3D_DEVCAP_MAX_CONTEXT_IDS:
1470	*pu32Val = SVGA3D_MAX_CONTEXT_IDS;
1471	break;
1472
1473	/*
1474	* This is the maximum number of SVGA surface IDs that the guest
1475	* can define using SVGA_3D_CMD_SURFACE_DEFINE*.
1476	*/
1477	case SVGA3D_DEVCAP_MAX_SURFACE_IDS:
1478	*pu32Val = SVGA3D_MAX_SURFACE_IDS;
1479	break;
1480
1481	#if 0 /* Appeared more recently, not yet implemented. */
1482	/* Linux: svga_screen.c in gallium; defaults to FALSE. */
1483	case SVGA3D_DEVCAP_LINE_AA:
1484	break;
1485	/* Linux: svga_screen.c in gallium; defaults to FALSE. */
1486	case SVGA3D_DEVCAP_LINE_STIPPLE:
1487	break;
1488	/* Linux: svga_screen.c in gallium; defaults to 1.0. */
1489	case SVGA3D_DEVCAP_MAX_LINE_WIDTH:
1490	break;
1491	/* Linux: svga_screen.c in gallium; defaults to 1.0. */
1492	case SVGA3D_DEVCAP_MAX_AA_LINE_WIDTH:
1493	break;
1494	#endif
1495
1496	/*
1497	* Supported surface formats.
1498	* Linux: svga_format.c in gallium, format_cap_table defines implicit expectations.
1499	*/
1500	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1501	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1502	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1503	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1504	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1505	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1506	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1507	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16:
1508	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8:
1509	case SVGA3D_DEVCAP_SURFACEFMT_ALPHA8:
1510	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8:
1511	case SVGA3D_DEVCAP_SURFACEFMT_Z_D16:
1512	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8:
1513	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8:
1514	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF16:
1515	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF24:
1516	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT:
1517	case SVGA3D_DEVCAP_SURFACEFMT_DXT1:
1518	*pu32Val = vmsvga3dGetSurfaceFormatSupport(idx3dCaps);
1519	break;
1520
1521	case SVGA3D_DEVCAP_SURFACEFMT_DXT2:
1522	case SVGA3D_DEVCAP_SURFACEFMT_DXT3:
1523	case SVGA3D_DEVCAP_SURFACEFMT_DXT4:
1524	case SVGA3D_DEVCAP_SURFACEFMT_DXT5:
1525	case SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8:
1526	case SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10:
1527	case SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8:
1528	case SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8:
1529	case SVGA3D_DEVCAP_SURFACEFMT_CxV8U8:
1530	case SVGA3D_DEVCAP_SURFACEFMT_R_S10E5:
1531	case SVGA3D_DEVCAP_SURFACEFMT_R_S23E8:
1532	case SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5:
1533	case SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8:
1534	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5:
1535	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8:
1536	case SVGA3D_DEVCAP_SURFACEFMT_V16U16:
1537	case SVGA3D_DEVCAP_SURFACEFMT_G16R16:
1538	case SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16:
1539	case SVGA3D_DEVCAP_SURFACEFMT_UYVY:
1540	case SVGA3D_DEVCAP_SURFACEFMT_YUY2:
1541	case SVGA3D_DEVCAP_SURFACEFMT_NV12:
1542	case SVGA3D_DEVCAP_SURFACEFMT_AYUV:
1543	*pu32Val = vmsvga3dGetSurfaceFormatSupport(idx3dCaps);
1544	break;
1545
1546	/* Linux: Not referenced in current sources. */
1547	case SVGA3D_DEVCAP_SURFACEFMT_BC4_UNORM:
1548	case SVGA3D_DEVCAP_SURFACEFMT_BC5_UNORM:
1549	Log(("CAPS: Unknown CAP %s\n", vmsvga3dGetCapString(idx3dCaps)));
1550	rc = VERR_INVALID_PARAMETER;
1551	*pu32Val = 0;
1552	break;
1553
1554	default:
1555	Log(("CAPS: Unexpected CAP %d\n", idx3dCaps));
1556	rc = VERR_INVALID_PARAMETER;
1557	break;
1558	}
1559
1560	Log(("CAPS: %s - %x\n", vmsvga3dGetCapString(idx3dCaps), *pu32Val));
1561	return rc;
1562	}
1563
1564	/**
1565	* Convert SVGA format value to its OpenGL equivalent
1566	*
1567	* @remarks Clues to be had in format_texture_info table (wined3d/utils.c) with
1568	* help from wined3dformat_from_d3dformat().
1569	*/
1570	void vmsvga3dSurfaceFormat2OGL(PVMSVGA3DSURFACE pSurface, SVGA3dSurfaceFormat format)
1571	{
1572	switch (format)
1573	{
1574	case SVGA3D_X8R8G8B8: /* D3DFMT_X8R8G8B8 - WINED3DFMT_B8G8R8X8_UNORM */
1575	pSurface->internalFormatGL = GL_RGB8;
1576	pSurface->formatGL = GL_BGRA;
1577	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1578	break;
1579	case SVGA3D_A8R8G8B8: /* D3DFMT_A8R8G8B8 - WINED3DFMT_B8G8R8A8_UNORM */
1580	pSurface->internalFormatGL = GL_RGBA8;
1581	pSurface->formatGL = GL_BGRA;
1582	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1583	break;
1584	case SVGA3D_R5G6B5: /* D3DFMT_R5G6B5 - WINED3DFMT_B5G6R5_UNORM */
1585	pSurface->internalFormatGL = GL_RGB5;
1586	pSurface->formatGL = GL_RGB;
1587	pSurface->typeGL = GL_UNSIGNED_SHORT_5_6_5;
1588	AssertMsgFailed(("Test me - SVGA3D_R5G6B5\n"));
1589	break;
1590	case SVGA3D_X1R5G5B5: /* D3DFMT_X1R5G5B5 - WINED3DFMT_B5G5R5X1_UNORM */
1591	pSurface->internalFormatGL = GL_RGB5;
1592	pSurface->formatGL = GL_BGRA;
1593	pSurface->typeGL = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1594	AssertMsgFailed(("Test me - SVGA3D_X1R5G5B5\n"));
1595	break;
1596	case SVGA3D_A1R5G5B5: /* D3DFMT_A1R5G5B5 - WINED3DFMT_B5G5R5A1_UNORM */
1597	pSurface->internalFormatGL = GL_RGB5_A1;
1598	pSurface->formatGL = GL_BGRA;
1599	pSurface->typeGL = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1600	AssertMsgFailed(("Test me - SVGA3D_A1R5G5B5\n"));
1601	break;
1602	case SVGA3D_A4R4G4B4: /* D3DFMT_A4R4G4B4 - WINED3DFMT_B4G4R4A4_UNORM */
1603	pSurface->internalFormatGL = GL_RGBA4;
1604	pSurface->formatGL = GL_BGRA;
1605	pSurface->typeGL = GL_UNSIGNED_SHORT_4_4_4_4_REV;
1606	AssertMsgFailed(("Test me - SVGA3D_A4R4G4B4\n"));
1607	break;
1608
1609	case SVGA3D_R8G8B8A8_UNORM:
1610	pSurface->internalFormatGL = GL_RGBA8;
1611	pSurface->formatGL = GL_RGBA;
1612	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1613	break;
1614
1615	case SVGA3D_Z_D32: /* D3DFMT_D32 - WINED3DFMT_D32_UNORM */
1616	pSurface->internalFormatGL = GL_DEPTH_COMPONENT32;
1617	pSurface->formatGL = GL_DEPTH_COMPONENT;
1618	pSurface->typeGL = GL_UNSIGNED_INT;
1619	break;
1620	case SVGA3D_Z_D16: /* D3DFMT_D16 - WINED3DFMT_D16_UNORM */
1621	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16; /** @todo Wine suggests GL_DEPTH_COMPONENT24. */
1622	pSurface->formatGL = GL_DEPTH_COMPONENT;
1623	pSurface->typeGL = GL_UNSIGNED_SHORT;
1624	//AssertMsgFailed(("Test me - SVGA3D_Z_D16\n"));
1625	break;
1626	case SVGA3D_Z_D24S8: /* D3DFMT_D24S8 - WINED3DFMT_D24_UNORM_S8_UINT */
1627	pSurface->internalFormatGL = GL_DEPTH24_STENCIL8;
1628	pSurface->formatGL = GL_DEPTH_STENCIL;
1629	pSurface->typeGL = GL_UNSIGNED_INT;
1630	break;
1631	case SVGA3D_Z_D15S1: /* D3DFMT_D15S1 - WINED3DFMT_S1_UINT_D15_UNORM */
1632	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16; /** @todo ??? */
1633	pSurface->formatGL = GL_DEPTH_STENCIL;
1634	pSurface->typeGL = GL_UNSIGNED_SHORT;
1635	/** @todo Wine sources hints at no hw support for this, so test this one! */
1636	AssertMsgFailed(("Test me - SVGA3D_Z_D15S1\n"));
1637	break;
1638	case SVGA3D_Z_D24X8: /* D3DFMT_D24X8 - WINED3DFMT_X8D24_UNORM */
1639	pSurface->internalFormatGL = GL_DEPTH_COMPONENT24;
1640	pSurface->formatGL = GL_DEPTH_COMPONENT;
1641	pSurface->typeGL = GL_UNSIGNED_INT;
1642	break;
1643
1644	/* Advanced D3D9 depth formats. */
1645	case SVGA3D_Z_DF16: /* D3DFMT_DF16? - not supported */
1646	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16;
1647	pSurface->formatGL = GL_DEPTH_COMPONENT;
1648	pSurface->typeGL = GL_FLOAT;
1649	break;
1650
1651	case SVGA3D_Z_DF24: /* D3DFMT_DF24? - not supported */
1652	pSurface->internalFormatGL = GL_DEPTH_COMPONENT24;
1653	pSurface->formatGL = GL_DEPTH_COMPONENT;
1654	pSurface->typeGL = GL_FLOAT; /* ??? */
1655	break;
1656
1657	case SVGA3D_Z_D24S8_INT: /* D3DFMT_??? - not supported */
1658	pSurface->internalFormatGL = GL_DEPTH24_STENCIL8;
1659	pSurface->formatGL = GL_DEPTH_STENCIL;
1660	pSurface->typeGL = GL_INT; /* ??? */
1661	break;
1662
1663	case SVGA3D_DXT1: /* D3DFMT_DXT1 - WINED3DFMT_DXT1 */
1664	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
1665	pSurface->formatGL = GL_RGBA; /* not used */
1666	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1667	break;
1668
1669	case SVGA3D_DXT2: /* D3DFMT_DXT2 */
1670	/* "DXT2 and DXT3 are the same from an API perspective." */
1671	RT_FALL_THRU();
1672	case SVGA3D_DXT3: /* D3DFMT_DXT3 - WINED3DFMT_DXT3 */
1673	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
1674	pSurface->formatGL = GL_RGBA; /* not used */
1675	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1676	break;
1677
1678	case SVGA3D_DXT4: /* D3DFMT_DXT4 */
1679	/* "DXT4 and DXT5 are the same from an API perspective." */
1680	RT_FALL_THRU();
1681	case SVGA3D_DXT5: /* D3DFMT_DXT5 - WINED3DFMT_DXT5 */
1682	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
1683	pSurface->formatGL = GL_RGBA; /* not used */
1684	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1685	break;
1686
1687	case SVGA3D_LUMINANCE8: /* D3DFMT_? - ? */
1688	pSurface->internalFormatGL = GL_LUMINANCE8_EXT;
1689	pSurface->formatGL = GL_LUMINANCE;
1690	pSurface->typeGL = GL_UNSIGNED_BYTE;
1691	break;
1692
1693	case SVGA3D_LUMINANCE16: /* D3DFMT_? - ? */
1694	pSurface->internalFormatGL = GL_LUMINANCE16_EXT;
1695	pSurface->formatGL = GL_LUMINANCE;
1696	pSurface->typeGL = GL_UNSIGNED_SHORT;
1697	break;
1698
1699	case SVGA3D_LUMINANCE4_ALPHA4: /* D3DFMT_? - ? */
1700	pSurface->internalFormatGL = GL_LUMINANCE4_ALPHA4_EXT;
1701	pSurface->formatGL = GL_LUMINANCE_ALPHA;
1702	pSurface->typeGL = GL_UNSIGNED_BYTE;
1703	break;
1704
1705	case SVGA3D_LUMINANCE8_ALPHA8: /* D3DFMT_? - ? */
1706	pSurface->internalFormatGL = GL_LUMINANCE8_ALPHA8_EXT;
1707	pSurface->formatGL = GL_LUMINANCE_ALPHA;
1708	pSurface->typeGL = GL_UNSIGNED_BYTE; /* unsigned_short causes issues even though this type should be 16-bit */
1709	break;
1710
1711	case SVGA3D_ALPHA8: /* D3DFMT_A8? - WINED3DFMT_A8_UNORM? */
1712	pSurface->internalFormatGL = GL_ALPHA8_EXT;
1713	pSurface->formatGL = GL_ALPHA;
1714	pSurface->typeGL = GL_UNSIGNED_BYTE;
1715	break;
1716
1717	#if 0
1718
1719	/* Bump-map formats */
1720	case SVGA3D_BUMPU8V8:
1721	return D3DFMT_V8U8;
1722	case SVGA3D_BUMPL6V5U5:
1723	return D3DFMT_L6V5U5;
1724	case SVGA3D_BUMPX8L8V8U8:
1725	return D3DFMT_X8L8V8U8;
1726	case SVGA3D_BUMPL8V8U8:
1727	/* No corresponding D3D9 equivalent. */
1728	AssertFailedReturn(D3DFMT_UNKNOWN);
1729	/* signed bump-map formats */
1730	case SVGA3D_V8U8:
1731	return D3DFMT_V8U8;
1732	case SVGA3D_Q8W8V8U8:
1733	return D3DFMT_Q8W8V8U8;
1734	case SVGA3D_CxV8U8:
1735	return D3DFMT_CxV8U8;
1736	/* mixed bump-map formats */
1737	case SVGA3D_X8L8V8U8:
1738	return D3DFMT_X8L8V8U8;
1739	case SVGA3D_A2W10V10U10:
1740	return D3DFMT_A2W10V10U10;
1741	#endif
1742
1743	case SVGA3D_ARGB_S10E5: /* 16-bit floating-point ARGB / / D3DFMT_A16B16G16R16F - WINED3DFMT_R16G16B16A16_FLOAT */
1744	pSurface->internalFormatGL = GL_RGBA16F;
1745	pSurface->formatGL = GL_RGBA;
1746	#if 0 /* bird: wine uses half float, sounds correct to me... */
1747	pSurface->typeGL = GL_FLOAT;
1748	#else
1749	pSurface->typeGL = GL_HALF_FLOAT;
1750	AssertMsgFailed(("Test me - SVGA3D_ARGB_S10E5\n"));
1751	#endif
1752	break;
1753
1754	case SVGA3D_ARGB_S23E8: /* 32-bit floating-point ARGB / / D3DFMT_A32B32G32R32F - WINED3DFMT_R32G32B32A32_FLOAT */
1755	pSurface->internalFormatGL = GL_RGBA32F;
1756	pSurface->formatGL = GL_RGBA;
1757	pSurface->typeGL = GL_FLOAT; /* ?? - same as wine, so probably correct */
1758	break;
1759
1760	case SVGA3D_A2R10G10B10: /* D3DFMT_A2R10G10B10 - WINED3DFMT_B10G10R10A2_UNORM */
1761	pSurface->internalFormatGL = GL_RGB10_A2; /* ?? - same as wine, so probably correct */
1762	#if 0 /* bird: Wine uses GL_BGRA instead of GL_RGBA. */
1763	pSurface->formatGL = GL_RGBA;
1764	#else
1765	pSurface->formatGL = GL_BGRA;
1766	#endif
1767	pSurface->typeGL = GL_UNSIGNED_INT;
1768	AssertMsgFailed(("Test me - SVGA3D_A2R10G10B10\n"));
1769	break;
1770
1771
1772	/* Single- and dual-component floating point formats */
1773	case SVGA3D_R_S10E5: /* D3DFMT_R16F - WINED3DFMT_R16_FLOAT */
1774	pSurface->internalFormatGL = GL_R16F;
1775	pSurface->formatGL = GL_RED;
1776	#if 0 /* bird: wine uses half float, sounds correct to me... */
1777	pSurface->typeGL = GL_FLOAT;
1778	#else
1779	pSurface->typeGL = GL_HALF_FLOAT;
1780	AssertMsgFailed(("Test me - SVGA3D_R_S10E5\n"));
1781	#endif
1782	break;
1783	case SVGA3D_R_S23E8: /* D3DFMT_R32F - WINED3DFMT_R32_FLOAT */
1784	pSurface->internalFormatGL = GL_R32F;
1785	pSurface->formatGL = GL_RG;
1786	pSurface->typeGL = GL_FLOAT;
1787	break;
1788	case SVGA3D_RG_S10E5: /* D3DFMT_G16R16F - WINED3DFMT_R16G16_FLOAT */
1789	pSurface->internalFormatGL = GL_RG16F;
1790	pSurface->formatGL = GL_RG;
1791	#if 0 /* bird: wine uses half float, sounds correct to me... */
1792	pSurface->typeGL = GL_FLOAT;
1793	#else
1794	pSurface->typeGL = GL_HALF_FLOAT;
1795	AssertMsgFailed(("Test me - SVGA3D_RG_S10E5\n"));
1796	#endif
1797	break;
1798	case SVGA3D_RG_S23E8: /* D3DFMT_G32R32F - WINED3DFMT_R32G32_FLOAT */
1799	pSurface->internalFormatGL = GL_RG32F;
1800	pSurface->formatGL = GL_RG;
1801	pSurface->typeGL = GL_FLOAT;
1802	break;
1803
1804	/*
1805	* Any surface can be used as a buffer object, but SVGA3D_BUFFER is
1806	* the most efficient format to use when creating new surfaces
1807	* expressly for index or vertex data.
1808	*/
1809	case SVGA3D_BUFFER:
1810	pSurface->internalFormatGL = -1;
1811	pSurface->formatGL = -1;
1812	pSurface->typeGL = -1;
1813	break;
1814
1815	#if 0
1816	return D3DFMT_UNKNOWN;
1817
1818	case SVGA3D_V16U16:
1819	return D3DFMT_V16U16;
1820	#endif
1821
1822	case SVGA3D_G16R16: /* D3DFMT_G16R16 - WINED3DFMT_R16G16_UNORM */
1823	pSurface->internalFormatGL = GL_RG16;
1824	pSurface->formatGL = GL_RG;
1825	#if 0 /* bird: Wine uses GL_UNSIGNED_SHORT here. */
1826	pSurface->typeGL = GL_UNSIGNED_INT;
1827	#else
1828	pSurface->typeGL = GL_UNSIGNED_SHORT;
1829	AssertMsgFailed(("test me - SVGA3D_G16R16\n"));
1830	#endif
1831	break;
1832
1833	case SVGA3D_A16B16G16R16: /* D3DFMT_A16B16G16R16 - WINED3DFMT_R16G16B16A16_UNORM */
1834	pSurface->internalFormatGL = GL_RGBA16;
1835	pSurface->formatGL = GL_RGBA;
1836	#if 0 /* bird: Wine uses GL_UNSIGNED_SHORT here. */
1837	pSurface->typeGL = GL_UNSIGNED_INT; /* ??? */
1838	#else
1839	pSurface->typeGL = GL_UNSIGNED_SHORT;
1840	AssertMsgFailed(("Test me - SVGA3D_A16B16G16R16\n"));
1841	#endif
1842	break;
1843
1844	case SVGA3D_R8G8B8A8_SNORM:
1845	pSurface->internalFormatGL = GL_RGB8;
1846	pSurface->formatGL = GL_BGRA;
1847	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1848	AssertMsgFailed(("test me - SVGA3D_R8G8B8A8_SNORM\n"));
1849	break;
1850	case SVGA3D_R16G16_UNORM:
1851	pSurface->internalFormatGL = GL_RG16;
1852	pSurface->formatGL = GL_RG;
1853	pSurface->typeGL = GL_UNSIGNED_SHORT;
1854	AssertMsgFailed(("test me - SVGA3D_R16G16_UNORM\n"));
1855	break;
1856
1857	#if 0
1858	/* Packed Video formats */
1859	case SVGA3D_UYVY:
1860	return D3DFMT_UYVY;
1861	case SVGA3D_YUY2:
1862	return D3DFMT_YUY2;
1863
1864	/* Planar video formats */
1865	case SVGA3D_NV12:
1866	return (D3DFORMAT)MAKEFOURCC('N', 'V', '1', '2');
1867
1868	/* Video format with alpha */
1869	case SVGA3D_AYUV:
1870	return (D3DFORMAT)MAKEFOURCC('A', 'Y', 'U', 'V');
1871
1872	case SVGA3D_BC4_UNORM:
1873	case SVGA3D_BC5_UNORM:
1874	/* Unknown; only in DX10 & 11 */
1875	break;
1876	#endif
1877	default:
1878	AssertMsgFailed(("Unsupported format %d\n", format));
1879	break;
1880	}
1881	}
1882
1883
1884	#if 0
1885	/**
1886	* Convert SVGA multi sample count value to its D3D equivalent
1887	*/
1888	D3DMULTISAMPLE_TYPE vmsvga3dMultipeSampleCount2D3D(uint32_t multisampleCount)
1889	{
1890	AssertCompile(D3DMULTISAMPLE_2_SAMPLES == 2);
1891	AssertCompile(D3DMULTISAMPLE_16_SAMPLES == 16);
1892
1893	if (multisampleCount > 16)
1894	return D3DMULTISAMPLE_NONE;
1895
1896	/** @todo exact same mapping as d3d? */
1897	return (D3DMULTISAMPLE_TYPE)multisampleCount;
1898	}
1899	#endif
1900
1901	/**
1902	* Destroy backend specific surface bits (part of SVGA_3D_CMD_SURFACE_DESTROY).
1903	*
1904	* @param pState The VMSVGA3d state.
1905	* @param pSurface The surface being destroyed.
1906	*/
1907	void vmsvga3dBackSurfaceDestroy(PVMSVGA3DSTATE pState, PVMSVGA3DSURFACE pSurface)
1908	{
1909	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
1910	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
1911
1912	switch (pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK)
1913	{
1914	case SVGA3D_SURFACE_HINT_INDEXBUFFER \| SVGA3D_SURFACE_HINT_VERTEXBUFFER:
1915	case SVGA3D_SURFACE_HINT_INDEXBUFFER:
1916	case SVGA3D_SURFACE_HINT_VERTEXBUFFER:
1917	if (pSurface->oglId.buffer != OPENGL_INVALID_ID)
1918	{
1919	pState->ext.glDeleteBuffers(1, &pSurface->oglId.buffer);
1920	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
1921	}
1922	break;
1923
1924	case SVGA3D_SURFACE_CUBEMAP:
1925	case SVGA3D_SURFACE_CUBEMAP \| SVGA3D_SURFACE_HINT_TEXTURE:
1926	case SVGA3D_SURFACE_CUBEMAP \| SVGA3D_SURFACE_HINT_TEXTURE \| SVGA3D_SURFACE_HINT_RENDERTARGET:
1927	/* Cubemap is a texture. */
1928	case SVGA3D_SURFACE_HINT_TEXTURE:
1929	case SVGA3D_SURFACE_HINT_TEXTURE \| SVGA3D_SURFACE_HINT_RENDERTARGET:
1930	if (pSurface->oglId.texture != OPENGL_INVALID_ID)
1931	{
1932	glDeleteTextures(1, &pSurface->oglId.texture);
1933	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
1934	}
1935	break;
1936
1937	case SVGA3D_SURFACE_HINT_RENDERTARGET:
1938	case SVGA3D_SURFACE_HINT_DEPTHSTENCIL:
1939	case SVGA3D_SURFACE_HINT_DEPTHSTENCIL \| SVGA3D_SURFACE_HINT_TEXTURE: /** @todo actual texture surface not supported */
1940	if (pSurface->oglId.renderbuffer != OPENGL_INVALID_ID)
1941	{
1942	pState->ext.glDeleteRenderbuffers(1, &pSurface->oglId.renderbuffer);
1943	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
1944	}
1945	break;
1946
1947	default:
1948	AssertMsg(!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface), ("type=%x\n", (pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK)));
1949	break;
1950	}
1951	}
1952
1953
1954	int vmsvga3dSurfaceCopy(PVGASTATE pThis, SVGA3dSurfaceImageId dest, SVGA3dSurfaceImageId src, uint32_t cCopyBoxes, SVGA3dCopyBox *pBox)
1955	{
1956	for (uint32_t i = 0; i < cCopyBoxes; i++)
1957	{
1958	SVGA3dBox destBox, srcBox;
1959
1960	srcBox.x = pBox[i].srcx;
1961	srcBox.y = pBox[i].srcy;
1962	srcBox.z = pBox[i].srcz;
1963	srcBox.w = pBox[i].w;
1964	srcBox.h = pBox[i].h;
1965	srcBox.d = pBox[i].d;
1966
1967	destBox.x = pBox[i].x;
1968	destBox.y = pBox[i].y;
1969	destBox.z = pBox[i].z;
1970	destBox.w = pBox[i].w;
1971	destBox.h = pBox[i].h;
1972	destBox.d = pBox[i].d;
1973
1974	int rc = vmsvga3dSurfaceStretchBlt(pThis, &dest, &destBox, &src, &srcBox, SVGA3D_STRETCH_BLT_LINEAR);
1975	AssertRCReturn(rc, rc);
1976	}
1977	return VINF_SUCCESS;
1978	}
1979
1980
1981	/**
1982	* Save texture unpacking parameters and loads those appropriate for the given
1983	* surface.
1984	*
1985	* @param pState The VMSVGA3D state structure.
1986	* @param pContext The active context.
1987	* @param pSurface The surface.
1988	* @param pSave Where to save stuff.
1989	*/
1990	void vmsvga3dOglSetUnpackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
1991	PVMSVGAPACKPARAMS pSave)
1992	{
1993	RT_NOREF(pState);
1994
1995	/*
1996	* Save (ignore errors, setting the defaults we want and avoids restore).
1997	*/
1998	pSave->iAlignment = 1;
1999	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ALIGNMENT, &pSave->iAlignment), pState, pContext);
2000	pSave->cxRow = 0;
2001	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ROW_LENGTH, &pSave->cxRow), pState, pContext);
2002
2003	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2004	pSave->cyImage = 0;
2005	glGetIntegerv(GL_UNPACK_IMAGE_HEIGHT, &pSave->cyImage);
2006	Assert(pSave->cyImage == 0);
2007
2008	pSave->fSwapBytes = GL_FALSE;
2009	glGetBooleanv(GL_UNPACK_SWAP_BYTES, &pSave->fSwapBytes);
2010	Assert(pSave->fSwapBytes == GL_FALSE);
2011
2012	pSave->fLsbFirst = GL_FALSE;
2013	glGetBooleanv(GL_UNPACK_LSB_FIRST, &pSave->fLsbFirst);
2014	Assert(pSave->fLsbFirst == GL_FALSE);
2015
2016	pSave->cSkipRows = 0;
2017	glGetIntegerv(GL_UNPACK_SKIP_ROWS, &pSave->cSkipRows);
2018	Assert(pSave->cSkipRows == 0);
2019
2020	pSave->cSkipPixels = 0;
2021	glGetIntegerv(GL_UNPACK_SKIP_PIXELS, &pSave->cSkipPixels);
2022	Assert(pSave->cSkipPixels == 0);
2023
2024	pSave->cSkipImages = 0;
2025	glGetIntegerv(GL_UNPACK_SKIP_IMAGES, &pSave->cSkipImages);
2026	Assert(pSave->cSkipImages == 0);
2027
2028	VMSVGA3D_CLEAR_GL_ERRORS();
2029	#endif
2030
2031	/*
2032	* Setup unpack.
2033	*
2034	* Note! We use 1 as alignment here because we currently don't do any
2035	* aligning of line pitches anywhere.
2036	*/
2037	NOREF(pSurface);
2038	if (pSave->iAlignment != 1)
2039	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, 1), pState, pContext);
2040	if (pSave->cxRow != 0)
2041	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, 0), pState, pContext);
2042	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2043	if (pSave->cyImage != 0)
2044	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, 0), pState, pContext);
2045	if (pSave->fSwapBytes != 0)
2046	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE), pState, pContext);
2047	if (pSave->fLsbFirst != 0)
2048	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE), pState, pContext);
2049	if (pSave->cSkipRows != 0)
2050	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS, 0), pState, pContext);
2051	if (pSave->cSkipPixels != 0)
2052	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0), pState, pContext);
2053	if (pSave->cSkipImages != 0)
2054	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_IMAGES, 0), pState, pContext);
2055	#endif
2056	}
2057
2058
2059	/**
2060	* Restores texture unpacking parameters.
2061	*
2062	* @param pState The VMSVGA3D state structure.
2063	* @param pContext The active context.
2064	* @param pSurface The surface.
2065	* @param pSave Where stuff was saved.
2066	*/
2067	void vmsvga3dOglRestoreUnpackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2068	PCVMSVGAPACKPARAMS pSave)
2069	{
2070	RT_NOREF(pState, pSurface);
2071
2072	if (pSave->iAlignment != 1)
2073	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, pSave->iAlignment), pState, pContext);
2074	if (pSave->cxRow != 0)
2075	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, pSave->cxRow), pState, pContext);
2076	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2077	if (pSave->cyImage != 0)
2078	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, pSave->cyImage), pState, pContext);
2079	if (pSave->fSwapBytes != 0)
2080	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SWAP_BYTES, pSave->fSwapBytes), pState, pContext);
2081	if (pSave->fLsbFirst != 0)
2082	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_LSB_FIRST, pSave->fLsbFirst), pState, pContext);
2083	if (pSave->cSkipRows != 0)
2084	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS, pSave->cSkipRows), pState, pContext);
2085	if (pSave->cSkipPixels != 0)
2086	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS, pSave->cSkipPixels), pState, pContext);
2087	if (pSave->cSkipImages != 0)
2088	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_IMAGES, pSave->cSkipImages), pState, pContext);
2089	#endif
2090	}
2091
2092	/**
2093	* Create D3D/OpenGL texture object for the specified surface.
2094	*
2095	* Surfaces are created when needed.
2096	*
2097	* @param pState The VMSVGA3d state.
2098	* @param pContext The context.
2099	* @param idAssociatedContext Probably the same as pContext->id.
2100	* @param pSurface The surface to create the texture for.
2101	*/
2102	int vmsvga3dBackCreateTexture(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, uint32_t idAssociatedContext,
2103	PVMSVGA3DSURFACE pSurface)
2104	{
2105	RT_NOREF(idAssociatedContext);
2106
2107	uint32_t const numMipLevels = pSurface->faces[0].numMipLevels;
2108
2109	/* Fugure out what kind of texture we are creating. */
2110	GLenum binding;
2111	GLenum target;
2112	if (pSurface->surfaceFlags & SVGA3D_SURFACE_CUBEMAP)
2113	{
2114	Assert(pSurface->cFaces == 6);
2115
2116	binding = GL_TEXTURE_BINDING_CUBE_MAP;
2117	target = GL_TEXTURE_CUBE_MAP;
2118	}
2119	else
2120	{
2121	if (pSurface->pMipmapLevels[0].mipmapSize.depth > 1)
2122	{
2123	binding = GL_TEXTURE_BINDING_3D;
2124	target = GL_TEXTURE_3D;
2125	}
2126	else
2127	{
2128	Assert(pSurface->cFaces == 1);
2129
2130	binding = GL_TEXTURE_BINDING_2D;
2131	target = GL_TEXTURE_2D;
2132	}
2133	}
2134
2135	/* All textures are created in the SharedCtx. */
2136	uint32_t idPrevCtx = pState->idActiveContext;
2137	pContext = &pState->SharedCtx;
2138	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2139
2140	glGenTextures(1, &pSurface->oglId.texture);
2141	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2142
2143	GLint activeTexture = 0;
2144	glGetIntegerv(binding, &activeTexture);
2145	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2146
2147	/* Must bind texture to the current context in order to change it. */
2148	glBindTexture(target, pSurface->oglId.texture);
2149	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2150
2151	/* Set the unpacking parameters. */
2152	VMSVGAPACKPARAMS SavedParams;
2153	vmsvga3dOglSetUnpackParams(pState, pContext, pSurface, &SavedParams);
2154
2155	/** @todo Set the mip map generation filter settings. */
2156
2157	/* Set the mipmap base and max level parameters. */
2158	glTexParameteri(target, GL_TEXTURE_BASE_LEVEL, 0);
2159	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2160	glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, pSurface->faces[0].numMipLevels - 1);
2161	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2162
2163	if (pSurface->fDirty)
2164	LogFunc(("sync dirty texture\n"));
2165
2166	/* Always allocate and initialize all mipmap levels; non-initialized mipmap levels used as render targets cause failures. */
2167	if (target == GL_TEXTURE_3D)
2168	{
2169	for (uint32_t i = 0; i < numMipLevels; ++i)
2170	{
2171	/* Allocate and initialize texture memory. Passing the zero filled pSurfaceData avoids
2172	* exposing random host memory to the guest and helps a with the fedora 21 surface
2173	* corruption issues (launchpad, background, search field, login).
2174	*/
2175	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->pMipmapLevels[i];
2176
2177	LogFunc(("sync dirty 3D texture mipmap level %d (pitch %x) (dirty %d)\n",
2178	i, pMipLevel->cbSurfacePitch, pMipLevel->fDirty));
2179
2180	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2181	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2182	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2183	{
2184	pState->ext.glCompressedTexImage3D(GL_TEXTURE_3D,
2185	i,
2186	pSurface->internalFormatGL,
2187	pMipLevel->mipmapSize.width,
2188	pMipLevel->mipmapSize.height,
2189	pMipLevel->mipmapSize.depth,
2190	0,
2191	pMipLevel->cbSurface,
2192	pMipLevel->pSurfaceData);
2193	}
2194	else
2195	{
2196	pState->ext.glTexImage3D(GL_TEXTURE_3D,
2197	i,
2198	pSurface->internalFormatGL,
2199	pMipLevel->mipmapSize.width,
2200	pMipLevel->mipmapSize.height,
2201	pMipLevel->mipmapSize.depth,
2202	0, /* border */
2203	pSurface->formatGL,
2204	pSurface->typeGL,
2205	pMipLevel->pSurfaceData);
2206	}
2207	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2208
2209	pMipLevel->fDirty = false;
2210	}
2211	}
2212	else if (target == GL_TEXTURE_CUBE_MAP)
2213	{
2214	for (uint32_t iFace = 0; iFace < 6; ++iFace)
2215	{
2216	GLenum const Face = vmsvga3dCubemapFaceFromIndex(iFace);
2217
2218	for (uint32_t i = 0; i < numMipLevels; ++i)
2219	{
2220	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->pMipmapLevels[iFace * numMipLevels + i];
2221	Assert(pMipLevel->mipmapSize.width == pMipLevel->mipmapSize.height);
2222	Assert(pMipLevel->mipmapSize.depth == 1);
2223
2224	LogFunc(("sync cube texture face %d mipmap level %d (dirty %d)\n",
2225	iFace, i, pMipLevel->fDirty));
2226
2227	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2228	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2229	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2230	{
2231	pState->ext.glCompressedTexImage2D(Face,
2232	i,
2233	pSurface->internalFormatGL,
2234	pMipLevel->mipmapSize.width,
2235	pMipLevel->mipmapSize.height,
2236	0,
2237	pMipLevel->cbSurface,
2238	pMipLevel->pSurfaceData);
2239	}
2240	else
2241	{
2242	glTexImage2D(Face,
2243	i,
2244	pSurface->internalFormatGL,
2245	pMipLevel->mipmapSize.width,
2246	pMipLevel->mipmapSize.height,
2247	0,
2248	pSurface->formatGL,
2249	pSurface->typeGL,
2250	pMipLevel->pSurfaceData);
2251	}
2252	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2253
2254	pMipLevel->fDirty = false;
2255	}
2256	}
2257	}
2258	else if (target == GL_TEXTURE_2D)
2259	{
2260	for (uint32_t i = 0; i < numMipLevels; ++i)
2261	{
2262	/* Allocate and initialize texture memory. Passing the zero filled pSurfaceData avoids
2263	* exposing random host memory to the guest and helps a with the fedora 21 surface
2264	* corruption issues (launchpad, background, search field, login).
2265	*/
2266	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->pMipmapLevels[i];
2267	Assert(pMipLevel->mipmapSize.depth == 1);
2268
2269	LogFunc(("sync dirty texture mipmap level %d (pitch %x) (dirty %d)\n",
2270	i, pMipLevel->cbSurfacePitch, pMipLevel->fDirty));
2271
2272	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2273	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2274	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2275	{
2276	pState->ext.glCompressedTexImage2D(GL_TEXTURE_2D,
2277	i,
2278	pSurface->internalFormatGL,
2279	pMipLevel->mipmapSize.width,
2280	pMipLevel->mipmapSize.height,
2281	0,
2282	pMipLevel->cbSurface,
2283	pMipLevel->pSurfaceData);
2284	}
2285	else
2286	{
2287	glTexImage2D(GL_TEXTURE_2D,
2288	i,
2289	pSurface->internalFormatGL,
2290	pMipLevel->mipmapSize.width,
2291	pMipLevel->mipmapSize.height,
2292	0,
2293	pSurface->formatGL,
2294	pSurface->typeGL,
2295	pMipLevel->pSurfaceData);
2296	}
2297	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2298
2299	pMipLevel->fDirty = false;
2300	}
2301	}
2302
2303	pSurface->fDirty = false;
2304
2305	/* Restore unpacking parameters. */
2306	vmsvga3dOglRestoreUnpackParams(pState, pContext, pSurface, &SavedParams);
2307
2308	/* Restore the old active texture. */
2309	glBindTexture(target, activeTexture);
2310	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2311
2312	pSurface->surfaceFlags \|= SVGA3D_SURFACE_HINT_TEXTURE;
2313	pSurface->targetGL = target;
2314	pSurface->bindingGL = binding;
2315
2316	if (idPrevCtx < pState->cContexts && pState->papContexts[idPrevCtx]->id == idPrevCtx)
2317	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pState->papContexts[idPrevCtx]);
2318	return VINF_SUCCESS;
2319	}
2320
2321
2322	/**
2323	* Backend worker for implementing SVGA_3D_CMD_SURFACE_STRETCHBLT.
2324	*
2325	* @returns VBox status code.
2326	* @param pThis The VGA device instance.
2327	* @param pState The VMSVGA3d state.
2328	* @param pDstSurface The destination host surface.
2329	* @param uDstFace The destination face (valid).
2330	* @param uDstMipmap The destination mipmap level (valid).
2331	* @param pDstBox The destination box.
2332	* @param pSrcSurface The source host surface.
2333	* @param uSrcFace The destination face (valid).
2334	* @param uSrcMipmap The source mimap level (valid).
2335	* @param pSrcBox The source box.
2336	* @param enmMode The strecht blt mode .
2337	* @param pContext The VMSVGA3d context (already current for OGL).
2338	*/
2339	int vmsvga3dBackSurfaceStretchBlt(PVGASTATE pThis, PVMSVGA3DSTATE pState,
2340	PVMSVGA3DSURFACE pDstSurface, uint32_t uDstFace, uint32_t uDstMipmap, SVGA3dBox const *pDstBox,
2341	PVMSVGA3DSURFACE pSrcSurface, uint32_t uSrcFace, uint32_t uSrcMipmap, SVGA3dBox const *pSrcBox,
2342	SVGA3dStretchBltMode enmMode, PVMSVGA3DCONTEXT pContext)
2343	{
2344	RT_NOREF(pThis);
2345
2346	/* Activate the read and draw framebuffer objects. */
2347	pState->ext.glBindFramebuffer(GL_READ_FRAMEBUFFER, pContext->idReadFramebuffer);
2348	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2349	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, pContext->idDrawFramebuffer);
2350	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2351
2352	/* Bind the source and destination objects to the right place. */
2353	GLenum textarget;
2354	if (pSrcSurface->surfaceFlags & SVGA3D_SURFACE_CUBEMAP)
2355	textarget = vmsvga3dCubemapFaceFromIndex(uSrcFace);
2356	else
2357	textarget = GL_TEXTURE_2D;
2358	pState->ext.glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, textarget,
2359	pSrcSurface->oglId.texture, uSrcMipmap);
2360	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2361
2362	if (pDstSurface->surfaceFlags & SVGA3D_SURFACE_CUBEMAP)
2363	textarget = vmsvga3dCubemapFaceFromIndex(uDstFace);
2364	else
2365	textarget = GL_TEXTURE_2D;
2366	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, textarget,
2367	pDstSurface->oglId.texture, uDstMipmap);
2368	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2369
2370	Log(("src conv. (%d,%d)(%d,%d); dest conv (%d,%d)(%d,%d)\n",
2371	pSrcBox->x, D3D_TO_OGL_Y_COORD(pSrcSurface, pSrcBox->y + pSrcBox->h),
2372	pSrcBox->x + pSrcBox->w, D3D_TO_OGL_Y_COORD(pSrcSurface, pSrcBox->y),
2373	pDstBox->x, D3D_TO_OGL_Y_COORD(pDstSurface, pDstBox->y + pDstBox->h),
2374	pDstBox->x + pDstBox->w, D3D_TO_OGL_Y_COORD(pDstSurface, pDstBox->y)));
2375
2376	pState->ext.glBlitFramebuffer(pSrcBox->x,
2377	pSrcBox->y,
2378	pSrcBox->x + pSrcBox->w, /* exclusive. */
2379	pSrcBox->y + pSrcBox->h,
2380	pDstBox->x,
2381	pDstBox->y,
2382	pDstBox->x + pDstBox->w, /* exclusive. */
2383	pDstBox->y + pDstBox->h,
2384	GL_COLOR_BUFFER_BIT,
2385	(enmMode == SVGA3D_STRETCH_BLT_POINT) ? GL_NEAREST : GL_LINEAR);
2386	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2387
2388	/* Reset the frame buffer association */
2389	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer);
2390	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2391
2392	return VINF_SUCCESS;
2393	}
2394
2395	/**
2396	* Save texture packing parameters and loads those appropriate for the given
2397	* surface.
2398	*
2399	* @param pState The VMSVGA3D state structure.
2400	* @param pContext The active context.
2401	* @param pSurface The surface.
2402	* @param pSave Where to save stuff.
2403	*/
2404	void vmsvga3dOglSetPackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2405	PVMSVGAPACKPARAMS pSave)
2406	{
2407	RT_NOREF(pState);
2408	/*
2409	* Save (ignore errors, setting the defaults we want and avoids restore).
2410	*/
2411	pSave->iAlignment = 1;
2412	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ALIGNMENT, &pSave->iAlignment), pState, pContext);
2413	pSave->cxRow = 0;
2414	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ROW_LENGTH, &pSave->cxRow), pState, pContext);
2415
2416	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2417	pSave->cyImage = 0;
2418	glGetIntegerv(GL_PACK_IMAGE_HEIGHT, &pSave->cyImage);
2419	Assert(pSave->cyImage == 0);
2420
2421	pSave->fSwapBytes = GL_FALSE;
2422	glGetBooleanv(GL_PACK_SWAP_BYTES, &pSave->fSwapBytes);
2423	Assert(pSave->fSwapBytes == GL_FALSE);
2424
2425	pSave->fLsbFirst = GL_FALSE;
2426	glGetBooleanv(GL_PACK_LSB_FIRST, &pSave->fLsbFirst);
2427	Assert(pSave->fLsbFirst == GL_FALSE);
2428
2429	pSave->cSkipRows = 0;
2430	glGetIntegerv(GL_PACK_SKIP_ROWS, &pSave->cSkipRows);
2431	Assert(pSave->cSkipRows == 0);
2432
2433	pSave->cSkipPixels = 0;
2434	glGetIntegerv(GL_PACK_SKIP_PIXELS, &pSave->cSkipPixels);
2435	Assert(pSave->cSkipPixels == 0);
2436
2437	pSave->cSkipImages = 0;
2438	glGetIntegerv(GL_PACK_SKIP_IMAGES, &pSave->cSkipImages);
2439	Assert(pSave->cSkipImages == 0);
2440
2441	VMSVGA3D_CLEAR_GL_ERRORS();
2442	#endif
2443
2444	/*
2445	* Setup unpack.
2446	*
2447	* Note! We use 1 as alignment here because we currently don't do any
2448	* aligning of line pitches anywhere.
2449	*/
2450	NOREF(pSurface);
2451	if (pSave->iAlignment != 1)
2452	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, 1), pState, pContext);
2453	if (pSave->cxRow != 0)
2454	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ROW_LENGTH, 0), pState, pContext);
2455	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2456	if (pSave->cyImage != 0)
2457	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_IMAGE_HEIGHT, 0), pState, pContext);
2458	if (pSave->fSwapBytes != 0)
2459	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SWAP_BYTES, GL_FALSE), pState, pContext);
2460	if (pSave->fLsbFirst != 0)
2461	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_LSB_FIRST, GL_FALSE), pState, pContext);
2462	if (pSave->cSkipRows != 0)
2463	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_ROWS, 0), pState, pContext);
2464	if (pSave->cSkipPixels != 0)
2465	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_PIXELS, 0), pState, pContext);
2466	if (pSave->cSkipImages != 0)
2467	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_IMAGES, 0), pState, pContext);
2468	#endif
2469	}
2470
2471
2472	/**
2473	* Restores texture packing parameters.
2474	*
2475	* @param pState The VMSVGA3D state structure.
2476	* @param pContext The active context.
2477	* @param pSurface The surface.
2478	* @param pSave Where stuff was saved.
2479	*/
2480	void vmsvga3dOglRestorePackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2481	PCVMSVGAPACKPARAMS pSave)
2482	{
2483	RT_NOREF(pState, pSurface);
2484	if (pSave->iAlignment != 1)
2485	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, pSave->iAlignment), pState, pContext);
2486	if (pSave->cxRow != 0)
2487	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ROW_LENGTH, pSave->cxRow), pState, pContext);
2488	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2489	if (pSave->cyImage != 0)
2490	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_IMAGE_HEIGHT, pSave->cyImage), pState, pContext);
2491	if (pSave->fSwapBytes != 0)
2492	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SWAP_BYTES, pSave->fSwapBytes), pState, pContext);
2493	if (pSave->fLsbFirst != 0)
2494	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_LSB_FIRST, pSave->fLsbFirst), pState, pContext);
2495	if (pSave->cSkipRows != 0)
2496	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_ROWS, pSave->cSkipRows), pState, pContext);
2497	if (pSave->cSkipPixels != 0)
2498	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_PIXELS, pSave->cSkipPixels), pState, pContext);
2499	if (pSave->cSkipImages != 0)
2500	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_IMAGES, pSave->cSkipImages), pState, pContext);
2501	#endif
2502	}
2503
2504
2505	/**
2506	* Backend worker for implementing SVGA_3D_CMD_SURFACE_DMA that copies one box.
2507	*
2508	* @returns Failure status code or @a rc.
2509	* @param pThis The VGA device instance data.
2510	* @param pState The VMSVGA3d state.
2511	* @param pSurface The host surface.
2512	* @param pMipLevel Mipmap level. The caller knows it already.
2513	* @param uHostFace The host face (valid).
2514	* @param uHostMipmap The host mipmap level (valid).
2515	* @param GuestPtr The guest pointer.
2516	* @param cbGuestPitch The guest pitch.
2517	* @param transfer The transfer direction.
2518	* @param pBox The box to copy (clipped, valid, except for guest's srcx, srcy, srcz).
2519	* @param pContext The context (for OpenGL).
2520	* @param rc The current rc for all boxes.
2521	* @param iBox The current box number (for Direct 3D).
2522	*/
2523	int vmsvga3dBackSurfaceDMACopyBox(PVGASTATE pThis, PVMSVGA3DSTATE pState, PVMSVGA3DSURFACE pSurface,
2524	PVMSVGA3DMIPMAPLEVEL pMipLevel, uint32_t uHostFace, uint32_t uHostMipmap,
2525	SVGAGuestPtr GuestPtr, uint32_t cbGuestPitch, SVGA3dTransferType transfer,
2526	SVGA3dCopyBox const *pBox, PVMSVGA3DCONTEXT pContext, int rc, int iBox)
2527	{
2528	RT_NOREF(iBox);
2529
2530	switch (pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK)
2531	{
2532	case SVGA3D_SURFACE_CUBEMAP \| SVGA3D_SURFACE_HINT_TEXTURE:
2533	case SVGA3D_SURFACE_CUBEMAP \| SVGA3D_SURFACE_HINT_TEXTURE \| SVGA3D_SURFACE_HINT_RENDERTARGET:
2534	case SVGA3D_SURFACE_HINT_TEXTURE \| SVGA3D_SURFACE_HINT_RENDERTARGET:
2535	case SVGA3D_SURFACE_HINT_TEXTURE:
2536	case SVGA3D_SURFACE_HINT_RENDERTARGET:
2537	{
2538	uint32_t cbSurfacePitch;
2539	uint8_t *pDoubleBuffer;
2540	uint32_t offHst;
2541
2542	uint32_t const u32HostBlockX = pBox->x / pSurface->cxBlock;
2543	uint32_t const u32HostBlockY = pBox->y / pSurface->cyBlock;
2544	Assert(u32HostBlockX * pSurface->cxBlock == pBox->x);
2545	Assert(u32HostBlockY * pSurface->cyBlock == pBox->y);
2546
2547	uint32_t const u32GuestBlockX = pBox->srcx / pSurface->cxBlock;
2548	uint32_t const u32GuestBlockY = pBox->srcy / pSurface->cyBlock;
2549	Assert(u32GuestBlockX * pSurface->cxBlock == pBox->srcx);
2550	Assert(u32GuestBlockY * pSurface->cyBlock == pBox->srcy);
2551
2552	uint32_t const cBlocksX = (pBox->w + pSurface->cxBlock - 1) / pSurface->cxBlock;
2553	uint32_t const cBlocksY = (pBox->h + pSurface->cyBlock - 1) / pSurface->cyBlock;
2554	AssertMsgReturn(cBlocksX && cBlocksY, ("Empty box %dx%d\n", pBox->w, pBox->h), VERR_INTERNAL_ERROR);
2555
2556	GLenum texImageTarget;
2557	if (pSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2558	{
2559	texImageTarget = vmsvga3dCubemapFaceFromIndex(uHostFace);
2560	}
2561	else
2562	{
2563	Assert(pSurface->targetGL == GL_TEXTURE_2D);
2564	texImageTarget = GL_TEXTURE_2D;
2565	}
2566
2567	pDoubleBuffer = (uint8_t *)RTMemAlloc(pMipLevel->cbSurface);
2568	AssertReturn(pDoubleBuffer, VERR_NO_MEMORY);
2569
2570	if (transfer == SVGA3D_READ_HOST_VRAM)
2571	{
2572	GLint activeTexture;
2573
2574	/* Must bind texture to the current context in order to read it. */
2575	glGetIntegerv(pSurface->bindingGL, &activeTexture);
2576	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2577
2578	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
2579	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2580
2581	/* Set row length and alignment of the input data. */
2582	VMSVGAPACKPARAMS SavedParams;
2583	vmsvga3dOglSetPackParams(pState, pContext, pSurface, &SavedParams);
2584
2585	glGetTexImage(texImageTarget,
2586	uHostMipmap,
2587	pSurface->formatGL,
2588	pSurface->typeGL,
2589	pDoubleBuffer);
2590	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2591
2592	vmsvga3dOglRestorePackParams(pState, pContext, pSurface, &SavedParams);
2593
2594	/* Restore the old active texture. */
2595	glBindTexture(pSurface->targetGL, activeTexture);
2596	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2597
2598	offHst = u32HostBlockX * pSurface->cbBlock + u32HostBlockY * pMipLevel->cbSurfacePitch;
2599	cbSurfacePitch = pMipLevel->cbSurfacePitch;
2600	}
2601	else
2602	{
2603	/* The buffer will contain only the copied rectangle. */
2604	offHst = 0;
2605	cbSurfacePitch = cBlocksX * pSurface->cbBlock;
2606	}
2607
2608	uint32_t const offGst = u32GuestBlockX * pSurface->cbBlock + u32GuestBlockY * cbGuestPitch;
2609
2610	rc = vmsvgaGMRTransfer(pThis,
2611	transfer,
2612	pDoubleBuffer,
2613	pMipLevel->cbSurface,
2614	offHst,
2615	cbSurfacePitch,
2616	GuestPtr,
2617	offGst,
2618	cbGuestPitch,
2619	cBlocksX * pSurface->cbBlock,
2620	cBlocksY);
2621	AssertRC(rc);
2622
2623	/* Update the opengl surface data. */
2624	if (transfer == SVGA3D_WRITE_HOST_VRAM)
2625	{
2626	GLint activeTexture = 0;
2627	glGetIntegerv(pSurface->bindingGL, &activeTexture);
2628	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2629
2630	/* Must bind texture to the current context in order to change it. */
2631	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
2632	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2633
2634	LogFunc(("copy texture mipmap level %d (pitch %x)\n", uHostMipmap, pMipLevel->cbSurfacePitch));
2635
2636	/* Set row length and alignment of the input data. */
2637	VMSVGAPACKPARAMS SavedParams;
2638	vmsvga3dOglSetUnpackParams(pState, pContext, pSurface, &SavedParams); /** @todo do we need to set ROW_LENGTH to w here? */
2639
2640	glTexSubImage2D(texImageTarget,
2641	uHostMipmap,
2642	u32HostBlockX,
2643	u32HostBlockY,
2644	cBlocksX,
2645	cBlocksY,
2646	pSurface->formatGL,
2647	pSurface->typeGL,
2648	pDoubleBuffer);
2649	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2650
2651	/* Restore old values. */
2652	vmsvga3dOglRestoreUnpackParams(pState, pContext, pSurface, &SavedParams);
2653
2654	/* Restore the old active texture. */
2655	glBindTexture(pSurface->targetGL, activeTexture);
2656	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2657	}
2658
2659	Log4(("first line:\n%.Rhxd\n", cBlocksX pSurface->cbBlock, pDoubleBuffer));
2660
2661	/* Free the double buffer. */
2662	RTMemFree(pDoubleBuffer);
2663	break;
2664	}
2665
2666	case SVGA3D_SURFACE_HINT_DEPTHSTENCIL:
2667	AssertFailed(); /** @todo DMA SVGA3D_SURFACE_HINT_DEPTHSTENCIL */
2668	break;
2669
2670	case SVGA3D_SURFACE_HINT_VERTEXBUFFER \| SVGA3D_SURFACE_HINT_INDEXBUFFER:
2671	case SVGA3D_SURFACE_HINT_VERTEXBUFFER:
2672	case SVGA3D_SURFACE_HINT_INDEXBUFFER:
2673	{
2674	/* Buffers are uncompressed. */
2675	AssertReturn(pSurface->cxBlock == 1 && pSurface->cyBlock == 1, VERR_INTERNAL_ERROR);
2676
2677	/* Caller already clipped pBox and buffers are 1-dimensional. */
2678	Assert(pBox->y == 0 && pBox->h == 1 && pBox->z == 0 && pBox->d == 1);
2679
2680	VMSVGA3D_CLEAR_GL_ERRORS();
2681	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pSurface->oglId.buffer);
2682	if (VMSVGA3D_GL_IS_SUCCESS(pContext))
2683	{
2684	GLenum enmGlTransfer = (transfer == SVGA3D_READ_HOST_VRAM) ? GL_READ_ONLY : GL_WRITE_ONLY;
2685	uint8_t pbData = (uint8_t )pState->ext.glMapBuffer(GL_ARRAY_BUFFER, enmGlTransfer);
2686	if (RT_LIKELY(pbData != NULL))
2687	{
2688	#if defined(VBOX_STRICT) && defined(RT_OS_DARWIN)
2689	GLint cbStrictBufSize;
2690	glGetBufferParameteriv(GL_ARRAY_BUFFER, GL_BUFFER_SIZE, &cbStrictBufSize);
2691	Assert(VMSVGA3D_GL_IS_SUCCESS(pContext));
2692	AssertMsg(cbStrictBufSize >= (int32_t)pMipLevel->cbSurface,
2693	("cbStrictBufSize=%#x cbSurface=%#x pContext->id=%#x\n", (uint32_t)cbStrictBufSize, pMipLevel->cbSurface, pContext->id));
2694	#endif
2695	Log(("Lock %s memory for rectangle (%d,%d)(%d,%d)\n",
2696	(pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK) == SVGA3D_SURFACE_HINT_VERTEXBUFFER ? "vertex" :
2697	(pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK) == SVGA3D_SURFACE_HINT_INDEXBUFFER ? "index" : "buffer",
2698	pBox->x, pBox->y, pBox->x + pBox->w, pBox->y + pBox->h));
2699
2700	uint32_t const offHst = pBox->x * pSurface->cbBlock;
2701
2702	rc = vmsvgaGMRTransfer(pThis,
2703	transfer,
2704	pbData,
2705	pMipLevel->cbSurface,
2706	offHst,
2707	pMipLevel->cbSurfacePitch,
2708	GuestPtr,
2709	pBox->srcx * pSurface->cbBlock,
2710	cbGuestPitch,
2711	pBox->w * pSurface->cbBlock,
2712	pBox->h);
2713	AssertRC(rc);
2714
2715	Log4(("first line:\n%.*Rhxd\n", cbGuestPitch, pbData + offHst));
2716
2717	pState->ext.glUnmapBuffer(GL_ARRAY_BUFFER);
2718	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2719	}
2720	else
2721	VMSVGA3D_GL_GET_AND_COMPLAIN(pState, pContext, ("glMapBuffer(GL_ARRAY_BUFFER, %#x) -> NULL\n", enmGlTransfer));
2722	}
2723	else
2724	VMSVGA3D_GL_COMPLAIN(pState, pContext, ("glBindBuffer(GL_ARRAY_BUFFER, %#x)\n", pSurface->oglId.buffer));
2725	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
2726	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2727	break;
2728	}
2729
2730	default:
2731	AssertFailed();
2732	break;
2733	}
2734
2735	return rc;
2736	}
2737
2738	int vmsvga3dGenerateMipmaps(PVGASTATE pThis, uint32_t sid, SVGA3dTextureFilter filter)
2739	{
2740	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
2741	PVMSVGA3DSURFACE pSurface;
2742	int rc = VINF_SUCCESS;
2743	PVMSVGA3DCONTEXT pContext;
2744	uint32_t cid;
2745	GLint activeTexture = 0;
2746
2747	AssertReturn(pState, VERR_NO_MEMORY);
2748
2749	rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
2750	AssertRCReturn(rc, rc);
2751
2752	Assert(filter != SVGA3D_TEX_FILTER_FLATCUBIC);
2753	Assert(filter != SVGA3D_TEX_FILTER_GAUSSIANCUBIC);
2754	pSurface->autogenFilter = filter;
2755
2756	LogFunc(("sid=%x filter=%d\n", sid, filter));
2757
2758	cid = SVGA3D_INVALID_ID;
2759	pContext = &pState->SharedCtx;
2760	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2761
2762	if (pSurface->oglId.texture == OPENGL_INVALID_ID)
2763	{
2764	/* Unknown surface type; turn it into a texture. */
2765	LogFunc(("unknown src surface id=%x type=%d format=%d -> create texture\n", sid, pSurface->surfaceFlags, pSurface->format));
2766	rc = vmsvga3dBackCreateTexture(pState, pContext, cid, pSurface);
2767	AssertRCReturn(rc, rc);
2768	}
2769	else
2770	{
2771	/** @todo new filter */
2772	AssertFailed();
2773	}
2774
2775	glGetIntegerv(pSurface->bindingGL, &activeTexture);
2776	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2777
2778	/* Must bind texture to the current context in order to change it. */
2779	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
2780	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2781
2782	/* Generate the mip maps. */
2783	pState->ext.glGenerateMipmap(pSurface->targetGL);
2784	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2785
2786	/* Restore the old texture. */
2787	glBindTexture(pSurface->targetGL, activeTexture);
2788	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2789
2790	return VINF_SUCCESS;
2791	}
2792
2793	int vmsvga3dCommandPresent(PVGASTATE pThis, uint32_t sid, uint32_t cRects, SVGA3dCopyRect *pRect)
2794	{
2795	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
2796	PVMSVGA3DSURFACE pSurface;
2797	PVMSVGA3DCONTEXT pContext;
2798	uint32_t cid;
2799
2800	AssertReturn(pState, VERR_NO_MEMORY);
2801	AssertReturn(sid < SVGA3D_MAX_SURFACE_IDS, VERR_INVALID_PARAMETER);
2802	AssertReturn(sid < pState->cSurfaces && pState->papSurfaces[sid]->id == sid, VERR_INVALID_PARAMETER);
2803
2804	pSurface = pState->papSurfaces[sid];
2805
2806	Log(("vmsvga3dCommandPresent: sid=%x cRects=%d\n", sid, cRects));
2807	for (uint32_t i=0; i < cRects; i++)
2808	Log(("vmsvga3dCommandPresent: rectangle %d src=(%d,%d) (%d,%d)(%d,%d)\n", i, pRect[i].srcx, pRect[i].srcy, pRect[i].x, pRect[i].y, pRect[i].x + pRect[i].w, pRect[i].y + pRect[i].h));
2809
2810	pContext = &pState->SharedCtx;
2811	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2812	cid = pContext->id;
2813	VMSVGA3D_CLEAR_GL_ERRORS();
2814
2815	#if 0 /* Can't make sense of this. SVGA3dCopyRect doesn't allow scaling. non-blit-cube path change to not use it. */
2816	/*
2817	* Source surface different size?
2818	*/
2819	RTRECT2 srcViewPort;
2820	if ( pSurface->pMipmapLevels[0].size.width != pThis->svga.uWidth
2821	\|\| pSurface->pMipmapLevels[0].size.height != pThis->svga.uHeight)
2822	{
2823	float xMultiplier = (float)pSurface->pMipmapLevels[0].size.width / (float)pThis->svga.uWidth;
2824	float yMultiplier = (float)pSurface->pMipmapLevels[0].size.height / (float)pThis->svga.uHeight;
2825
2826	LogFlow(("size (%d vs %d, %d vs %d) multiplier (" FLOAT_FMT_STR ", " FLOAT_FMT_STR ")\n",
2827	pSurface->pMipmapLevels[0].size.width, pThis->svga.uWidth,
2828	pSurface->pMipmapLevels[0].size.height, pThis->svga.uHeight,
2829	FLOAT_FMT_ARGS(xMultiplier), FLOAT_FMT_ARGS(yMultiplier) ));
2830
2831	srcViewPort.x = (uint32_t)((float)pThis->svga.viewport.x * xMultiplier);
2832	srcViewPort.y = (uint32_t)((float)pThis->svga.viewport.y * yMultiplier);
2833	srcViewPort.cx = (uint32_t)((float)pThis->svga.viewport.cx * xMultiplier);
2834	srcViewPort.cy = (uint32_t)((float)pThis->svga.viewport.cy * yMultiplier);
2835	}
2836	else
2837	{
2838	srcViewPort.x = pThis->svga.viewport.x;
2839	srcViewPort.y = pThis->svga.viewport.y;
2840	srcViewPort.cx = pThis->svga.viewport.cx;
2841	srcViewPort.cy = pThis->svga.viewport.cy;
2842	}
2843	RTRECT SrcViewPortRect;
2844	SrcViewPortRect.xLeft = srcViewPort.x;
2845	SrcViewPortRect.xRight = srcViewPort.x + srcViewPort.cx;
2846	SrcViewPortRect.yBottom = srcViewPort.y;
2847	SrcViewPortRect.yTop = srcViewPort.y + srcViewPort.cy;
2848	#endif
2849
2850
2851	#if 0//ndef RT_OS_DARWIN /* blit-cube fails in this path... */
2852	/*
2853	* Note! this path is slightly faster than the glBlitFrameBuffer path below.
2854	*/
2855	SVGA3dCopyRect rect;
2856	uint32_t oldVShader, oldPShader;
2857	GLint oldTextureId;
2858
2859	if (cRects == 0)
2860	{
2861	rect.x = rect.y = rect.srcx = rect.srcy = 0;
2862	rect.w = pSurface->pMipmapLevels[0].size.width;
2863	rect.h = pSurface->pMipmapLevels[0].size.height;
2864	pRect = &rect;
2865	cRects = 1;
2866	}
2867
2868	//glPushAttrib(GL_ENABLE_BIT \| GL_DEPTH_BUFFER_BIT \| GL_COLOR_BUFFER_BIT \| GL_VIEWPORT_BIT);
2869
2870	#if 0
2871	glDisable(GL_CULL_FACE);
2872	glDisable(GL_BLEND);
2873	glDisable(GL_ALPHA_TEST);
2874	glDisable(GL_SCISSOR_TEST);
2875	glDisable(GL_STENCIL_TEST);
2876	glEnable(GL_DEPTH_TEST);
2877	glDepthFunc(GL_ALWAYS);
2878	glDepthMask(GL_TRUE);
2879	glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
2880	glViewport(0, 0, pSurface->pMipmapLevels[0].size.width, pSurface->pMipmapLevels[0].size.height);
2881	#endif
2882
2883	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_TEXTURE_BINDING_2D, &oldTextureId), pState, pContext);
2884
2885	oldVShader = pContext->state.shidVertex;
2886	oldPShader = pContext->state.shidPixel;
2887	vmsvga3dShaderSet(pThis, pContext, cid, SVGA3D_SHADERTYPE_VS, SVGA_ID_INVALID);
2888	vmsvga3dShaderSet(pThis, pContext, cid, SVGA3D_SHADERTYPE_PS, SVGA_ID_INVALID);
2889
2890	/* Flush shader changes. */
2891	if (pContext->pShaderContext)
2892	ShaderUpdateState(pContext->pShaderContext, 0);
2893
2894	/* Activate the read and draw framebuffer objects. */
2895	VMSVGA3D_ASSERT_GL_CALL(pState->ext.glBindFramebuffer(GL_READ_FRAMEBUFFER, pContext->idReadFramebuffer), pState, pContext);
2896	VMSVGA3D_ASSERT_GL_CALL(pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0 /* back buffer */), pState, pContext);
2897
2898	VMSVGA3D_ASSERT_GL_CALL(pState->ext.glActiveTexture(GL_TEXTURE0), pState, pContext);
2899	VMSVGA3D_ASSERT_GL_CALL(glEnable(GL_TEXTURE_2D), pState, pContext);;
2900	VMSVGA3D_ASSERT_GL_CALL(glBindTexture(GL_TEXTURE_2D, pSurface->oglId.texture), pState, pContext);
2901
2902	VMSVGA3D_ASSERT_GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR), pState, pContext);
2903	VMSVGA3D_ASSERT_GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR), pState, pContext);;
2904
2905	#if 0
2906	VMSVGA3D_ASSERT_GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP), pState, pContext);;
2907	VMSVGA3D_ASSERT_GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP), pState, pContext);;
2908	#endif
2909
2910	/* Reset the transformation matrices. */
2911	VMSVGA3D_ASSERT_GL_CALL(glMatrixMode(GL_MODELVIEW), pState, pContext);
2912	VMSVGA3D_ASSERT_GL_CALL(glPushMatrix(), pState, pContext);
2913	VMSVGA3D_ASSERT_GL_CALL(glLoadIdentity(), pState, pContext);
2914	VMSVGA3D_ASSERT_GL_CALL(glMatrixMode(GL_PROJECTION), pState, pContext);
2915	VMSVGA3D_ASSERT_GL_CALL(glPushMatrix(), pState, pContext);
2916	VMSVGA3D_ASSERT_GL_CALL(glLoadIdentity(), pState, pContext);
2917	VMSVGA3D_ASSERT_GL_CALL(glScalef(1.0f, -1.0f, 1.0f), pState, pContext);
2918	VMSVGA3D_ASSERT_GL_CALL(glOrtho(0, pThis->svga.uWidth, pThis->svga.uHeight, 0, 0.0, -1.0), pState, pContext);
2919
2920	for (uint32_t i = 0; i < cRects; i++)
2921	{
2922	float left, right, top, bottom; /* Texture coordinates */
2923	int vertexLeft, vertexRight, vertexTop, vertexBottom;
2924
2925	pRect[i].srcx = RT_MAX(pRect[i].srcx, (uint32_t)RT_MAX(srcViewPort.x, 0));
2926	pRect[i].srcy = RT_MAX(pRect[i].srcy, (uint32_t)RT_MAX(srcViewPort.y, 0));
2927	pRect[i].x = RT_MAX(pRect[i].x, pThis->svga.viewport.x) - pThis->svga.viewport.x;
2928	pRect[i].y = RT_MAX(pRect[i].y, pThis->svga.viewport.y) - pThis->svga.viewport.y;
2929	pRect[i].w = pThis->svga.viewport.cx;
2930	pRect[i].h = pThis->svga.viewport.cy;
2931
2932	if ( pRect[i].x + pRect[i].w <= pThis->svga.viewport.x
2933	\|\| pThis->svga.viewport.x + pThis->svga.viewport.cx <= pRect[i].x
2934	\|\| pRect[i].y + pRect[i].h <= pThis->svga.viewport.y
2935	\|\| pThis->svga.viewport.y + pThis->svga.viewport.cy <= pRect[i].y)
2936	{
2937	/* Intersection is empty; skip */
2938	continue;
2939	}
2940
2941	left = pRect[i].srcx;
2942	right = pRect[i].srcx + pRect[i].w;
2943	top = pRect[i].srcy + pRect[i].h;
2944	bottom = pRect[i].srcy;
2945
2946	left /= pSurface->pMipmapLevels[0].size.width;
2947	right /= pSurface->pMipmapLevels[0].size.width;
2948	top /= pSurface->pMipmapLevels[0].size.height;
2949	bottom /= pSurface->pMipmapLevels[0].size.height;
2950
2951	vertexLeft = pRect[i].x;
2952	vertexRight = pRect[i].x + pRect[i].w;
2953	vertexTop = ((uint32_t)pThis->svga.uHeight >= pRect[i].y + pRect[i].h) ? pThis->svga.uHeight - pRect[i].y - pRect[i].h : 0;
2954	vertexBottom = pThis->svga.uHeight - pRect[i].y;
2955
2956	Log(("view port (%d,%d)(%d,%d)\n", srcViewPort.x, srcViewPort.y, srcViewPort.cx, srcViewPort.cy));
2957	Log(("vertex (%d,%d) (%d,%d) (%d,%d) (%d,%d)\n", vertexLeft, vertexBottom, vertexLeft, vertexTop, vertexRight, vertexTop, vertexRight, vertexBottom));
2958	Log(("texture (%d,%d) (%d,%d) (%d,%d) (%d,%d)\n", pRect[i].srcx, pSurface->pMipmapLevels[0].size.height - (pRect[i].srcy + pRect[i].h), pRect[i].srcx, pSurface->pMipmapLevels[0].size.height - pRect[i].srcy, pRect[i].srcx + pRect[i].w, pSurface->pMipmapLevels[0].size.height - pRect[i].srcy, pRect[i].srcx + pRect[i].w, pSurface->pMipmapLevels[0].size.height - (pRect[i].srcy + pRect[i].h)));
2959
2960	glBegin(GL_QUADS);
2961
2962	/* bottom left */
2963	glTexCoord2f(left, bottom);
2964	glVertex2i(vertexLeft, vertexBottom);
2965
2966	/* top left */
2967	glTexCoord2f(left, top);
2968	glVertex2i(vertexLeft, vertexTop);
2969
2970	/* top right */
2971	glTexCoord2f(right, top);
2972	glVertex2i(vertexRight, vertexTop);
2973
2974	/* bottom right */
2975	glTexCoord2f(right, bottom);
2976	glVertex2i(vertexRight, vertexBottom);
2977
2978	VMSVGA3D_ASSERT_GL_CALL(glEnd(), pState, pContext);
2979	}
2980
2981	/* Restore old settings. */
2982	VMSVGA3D_ASSERT_GL_CALL(glMatrixMode(GL_PROJECTION), pState, pContext);
2983	VMSVGA3D_ASSERT_GL_CALL(glPopMatrix(), pState, pContext);
2984	VMSVGA3D_ASSERT_GL_CALL(glMatrixMode(GL_MODELVIEW), pState, pContext);
2985	VMSVGA3D_ASSERT_GL_CALL(glPopMatrix(), pState, pContext);
2986
2987	//VMSVGA3D_ASSERT_GL_CALL(glPopAttrib(), pState, pContext);
2988
2989	VMSVGA3D_ASSERT_GL_CALL(glBindTexture(GL_TEXTURE_2D, oldTextureId), pState, pContext);
2990	vmsvga3dShaderSet(pThis, pContext, cid, SVGA3D_SHADERTYPE_VS, oldVShader);
2991	vmsvga3dShaderSet(pThis, pContext, cid, SVGA3D_SHADERTYPE_PS, oldPShader);
2992
2993	#else
2994	/*
2995	* glBlitFramebuffer variant.
2996	*/
2997	/* Activate the read and draw framebuffer objects. */
2998	pState->ext.glBindFramebuffer(GL_READ_FRAMEBUFFER, pContext->idReadFramebuffer);
2999	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3000	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0 /* back buffer */);
3001	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3002
3003	/* Bind the source objects to the right place. */
3004	Assert(pSurface->targetGL == GL_TEXTURE_2D);
3005	pState->ext.glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, pSurface->oglId.texture, 0 /* level 0 */);
3006	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3007
3008
3009	/* Read the destination viewport specs in one go to try avoid some unnecessary update races. */
3010	VMSVGAVIEWPORT const DstViewport = pThis->svga.viewport;
3011	ASMCompilerBarrier(); /* paranoia */
3012	Assert(DstViewport.yHighWC >= DstViewport.yLowWC);
3013
3014	/* If there are no recangles specified, just grab a screenful. */
3015	SVGA3dCopyRect DummyRect;
3016	if (cRects != 0)
3017	{ /* likely */ }
3018	else
3019	{
3020	/** @todo Find the usecase for this or check what the original device does.
3021	* The original code was doing some scaling based on the surface
3022	* size... */
3023	# ifdef DEBUG_bird
3024	AssertMsgFailed(("No rects to present. Who is doing that and what do they actually expect?\n"));
3025	# endif
3026	DummyRect.x = DummyRect.srcx = 0;
3027	DummyRect.y = DummyRect.srcy = 0;
3028	DummyRect.w = pThis->svga.uWidth;
3029	DummyRect.h = pThis->svga.uHeight;
3030	cRects = 1;
3031	pRect = &DummyRect;
3032	}
3033
3034	/*
3035	* Blit the surface rectangle(s) to the back buffer.
3036	*/
3037	uint32_t const cxSurface = pSurface->pMipmapLevels[0].mipmapSize.width;
3038	uint32_t const cySurface = pSurface->pMipmapLevels[0].mipmapSize.height;
3039	for (uint32_t i = 0; i < cRects; i++)
3040	{
3041	SVGA3dCopyRect ClippedRect = pRect[i];
3042
3043	/*
3044	* Do some sanity checking and limit width and height, all so we
3045	* don't need to think about wrap-arounds below.
3046	*/
3047	if (RT_LIKELY( ClippedRect.w
3048	&& ClippedRect.x < VMSVGA_MAX_X
3049	&& ClippedRect.srcx < VMSVGA_MAX_X
3050	&& ClippedRect.h
3051	&& ClippedRect.y < VMSVGA_MAX_Y
3052	&& ClippedRect.srcy < VMSVGA_MAX_Y
3053	))
3054	{ /* likely */ }
3055	else
3056	continue;
3057
3058	if (RT_LIKELY(ClippedRect.w < VMSVGA_MAX_X))
3059	{ /* likely */ }
3060	else
3061	ClippedRect.w = VMSVGA_MAX_X;
3062	if (RT_LIKELY(ClippedRect.h < VMSVGA_MAX_Y))
3063	{ /* likely */ }
3064	else
3065	ClippedRect.h = VMSVGA_MAX_Y;
3066
3067
3068	/*
3069	* Source surface clipping (paranoia). Straight forward.
3070	*/
3071	if (RT_LIKELY(ClippedRect.srcx < cxSurface))
3072	{ /* likely */ }
3073	else
3074	continue;
3075	if (RT_LIKELY(ClippedRect.srcx + ClippedRect.w <= cxSurface))
3076	{ /* likely */ }
3077	else
3078	{
3079	AssertFailed(); /* remove if annoying. */
3080	ClippedRect.w = cxSurface - ClippedRect.srcx;
3081	}
3082
3083	if (RT_LIKELY(ClippedRect.srcy < cySurface))
3084	{ /* likely */ }
3085	else
3086	continue;
3087	if (RT_LIKELY(ClippedRect.srcy + ClippedRect.h <= cySurface))
3088	{ /* likely */ }
3089	else
3090	{
3091	AssertFailed(); /* remove if annoying. */
3092	ClippedRect.h = cySurface - ClippedRect.srcy;
3093	}
3094
3095	/*
3096	* Destination viewport clipping - real PITA.
3097	*
3098	* We have to take the following into account here:
3099	* - The source image is Y inverted.
3100	* - The destination framebuffer is in world and not window coordinates,
3101	* just like the source surface. This means working in the first quadrant.
3102	* - The viewport is in window coordinate, that is fourth quadrant and
3103	* negated Y values.
3104	* - The destination framebuffer is not scrolled, so we have to blit
3105	* what's visible into the top of the framebuffer.
3106	*
3107	*
3108	* To illustrate:
3109	*
3110	* source destination 0123456789
3111	* 8 ^---------- 8 ^---------- 0 ----------->
3112	* 7 \| \| 7 \| \| 1 \| \|
3113	* 6 \| \| 6 \| ***** \| 2 \| ***** \|
3114	* 5 \| *** \| 5 \| * \| 3 \| * \|
3115	* 4 \| * \| => 4 \| * \| => 4 \| * \|
3116	* 3 \| * \| 3 \| * \| 5 \| * \|
3117	* 2 \| ******* \| 2 \| \| 6 \| \|
3118	* 1 \| \| 1 \| \| 7 \| \|
3119	* 0 -----------> 0 -----------> 8 v----------
3120	* 0123456789 0123456789 Destination window
3121	*
3122	* From the above, it follows that a destination viewport given in
3123	* window coordinates matches the source exactly when srcy = srcx = 0.
3124	*
3125	* Example (Y only):
3126	* ySrc = 0
3127	* yDst = 0
3128	* cyCopy = 9
3129	* cyScreen = cyCopy
3130	* cySurface >= cyCopy
3131	* yViewport = 5
3132	* cyViewport = 2 (i.e. '\| *** \|'
3133	* '\| \|' )
3134	* yWCViewportHi = cxScreen - yViewport = 9 - 5 = 4
3135	* yWCViewportLow = cxScreen - yViewport - cyViewport = 4 - 2 = 2
3136	*
3137	* We can see from the illustration that the final result should be:
3138	* SrcRect = (0,7) (11, 5) (cy=2 from y=5)
3139	* DstRect = (0,2) (11, 4)
3140	*
3141	* Let's postpone the switching of SrcRect.yBottom/yTop to make it
3142	* easier to follow:
3143	* SrcRect = (0,5) (11, 7)
3144	*
3145	* From the top, Y values only:
3146	* 0. Copy = { .yDst = 0, .ySrc = 0, .cy = 9 }
3147	*
3148	* 1. CopyRect.yDst (=0) is lower than yWCViewportLow:
3149	* cyAdjust = yWCViewportLow - CopyRect.yDst = 2;
3150	* Copy.yDst += cyAdjust = 2;
3151	* Copy.ySrc = unchanged;
3152	* Copy.cx -= cyAdjust = 7;
3153	* => Copy = { .yDst = 2, .ySrc = 0, .cy = 7 }
3154	*
3155	* 2. CopyRect.yDst + CopyRect.cx (=9) is higher than yWCViewportHi:
3156	* cyAdjust = CopyRect.yDst + CopyRect.cx - yWCViewportHi = 9 - 4 = 5
3157	* Copy.yDst = unchanged;
3158	* Copy.ySrc += cyAdjust = 5;
3159	* Copy.cx -= cyAdjust = 2;
3160	* => Copy = { .yDst = 2, .ySrc = 5, .cy = 2 }
3161	*
3162	* Update: On darwin, it turns out that when we call [NSOpenGLContext updates]
3163	* when the view is resized, moved and otherwise messed with,
3164	* the visible part of the framebuffer is actually the bottom
3165	* one. It's easy to adjust for this, just have to adjust the
3166	* destination rectangle such that yBottom is zero.
3167	*/
3168	/* X - no inversion, so kind of simple. */
3169	if (ClippedRect.x >= DstViewport.x)
3170	{
3171	if (ClippedRect.x + ClippedRect.w <= DstViewport.xRight)
3172	{ /* typical */ }
3173	else if (ClippedRect.x < DstViewport.xRight)
3174	ClippedRect.w = DstViewport.xRight - ClippedRect.x;
3175	else
3176	continue;
3177	}
3178	else
3179	{
3180	uint32_t cxAdjust = DstViewport.x - ClippedRect.x;
3181	if (cxAdjust < ClippedRect.w)
3182	{
3183	ClippedRect.w -= cxAdjust;
3184	ClippedRect.x += cxAdjust;
3185	ClippedRect.srcx += cxAdjust;
3186	}
3187	else
3188	continue;
3189
3190	if (ClippedRect.x + ClippedRect.w <= DstViewport.xRight)
3191	{ /* typical */ }
3192	else
3193	ClippedRect.w = DstViewport.xRight - ClippedRect.x;
3194	}
3195
3196	/* Y - complicated, see above. */
3197	if (ClippedRect.y >= DstViewport.yLowWC)
3198	{
3199	if (ClippedRect.y + ClippedRect.h <= DstViewport.yHighWC)
3200	{ /* typical */ }
3201	else if (ClippedRect.y < DstViewport.yHighWC)
3202	{
3203	/* adjustment #2 */
3204	uint32_t cyAdjust = ClippedRect.y + ClippedRect.h - DstViewport.yHighWC;
3205	ClippedRect.srcy += cyAdjust;
3206	ClippedRect.h -= cyAdjust;
3207	}
3208	else
3209	continue;
3210	}
3211	else
3212	{
3213	/* adjustment #1 */
3214	uint32_t cyAdjust = DstViewport.yLowWC - ClippedRect.y;
3215	if (cyAdjust < ClippedRect.h)
3216	{
3217	ClippedRect.y += cyAdjust;
3218	ClippedRect.h -= cyAdjust;
3219	}
3220	else
3221	continue;
3222
3223	if (ClippedRect.y + ClippedRect.h <= DstViewport.yHighWC)
3224	{ /* typical */ }
3225	else
3226	{
3227	/* adjustment #2 */
3228	cyAdjust = ClippedRect.y + ClippedRect.h - DstViewport.yHighWC;
3229	ClippedRect.srcy += cyAdjust;
3230	ClippedRect.h -= cyAdjust;
3231	}
3232	}
3233
3234	/* Calc source rectangle with y flipping wrt destination. */
3235	RTRECT SrcRect;
3236	SrcRect.xLeft = ClippedRect.srcx;
3237	SrcRect.xRight = ClippedRect.srcx + ClippedRect.w;
3238	SrcRect.yBottom = ClippedRect.srcy + ClippedRect.h;
3239	SrcRect.yTop = ClippedRect.srcy;
3240
3241	/* Calc destination rectangle. */
3242	RTRECT DstRect;
3243	DstRect.xLeft = ClippedRect.x;
3244	DstRect.xRight = ClippedRect.x + ClippedRect.w;
3245	DstRect.yBottom = ClippedRect.y;
3246	DstRect.yTop = ClippedRect.y + ClippedRect.h;
3247
3248	/* Adjust for viewport. */
3249	DstRect.xLeft -= DstViewport.x;
3250	DstRect.xRight -= DstViewport.x;
3251	# ifdef RT_OS_DARWIN /* We actually seeing the bottom of the FB, not the top as on windows and X11. */
3252	DstRect.yTop -= DstRect.yBottom;
3253	DstRect.yBottom = 0;
3254	# else
3255	DstRect.yBottom += DstViewport.y;
3256	DstRect.yTop += DstViewport.y;
3257	# endif
3258
3259	Log(("SrcRect: (%d,%d)(%d,%d) DstRect: (%d,%d)(%d,%d)\n",
3260	SrcRect.xLeft, SrcRect.yBottom, SrcRect.xRight, SrcRect.yTop,
3261	DstRect.xLeft, DstRect.yBottom, DstRect.xRight, DstRect.yTop));
3262	pState->ext.glBlitFramebuffer(SrcRect.xLeft, SrcRect.yBottom, SrcRect.xRight, SrcRect.yTop,
3263	DstRect.xLeft, DstRect.yBottom, DstRect.xRight, DstRect.yTop,
3264	GL_COLOR_BUFFER_BIT, GL_LINEAR);
3265	}
3266
3267	#endif
3268
3269	/*
3270	* Flip the front and back buffers.
3271	*/
3272	#ifdef RT_OS_WINDOWS
3273	BOOL fRef = SwapBuffers(pContext->hdc);
3274	AssertMsg(fRef, ("SwapBuffers failed with %d\n", GetLastError())); NOREF(fRef);
3275	#elif defined(RT_OS_DARWIN)
3276	vmsvga3dCocoaSwapBuffers(pContext->cocoaView, pContext->cocoaContext);
3277	#else
3278	/* show the window if not already done */
3279	if (!pContext->fMapped)
3280	{
3281	XMapWindow(pState->display, pContext->window);
3282	pContext->fMapped = true;
3283	}
3284	/* now swap the buffers, i.e. display the rendering result */
3285	glXSwapBuffers(pState->display, pContext->window);
3286	#endif
3287
3288	/*
3289	* Now we can reset the frame buffer association. Doing it earlier means no
3290	* output on darwin.
3291	*/
3292	VMSVGA3D_ASSERT_GL_CALL(pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer), pState, pContext);
3293	return VINF_SUCCESS;
3294	}
3295
3296	#ifdef RT_OS_LINUX
3297	/**
3298	* X11 event handling thread.
3299	*
3300	* @returns VINF_SUCCESS (ignored)
3301	* @param hThreadSelf thread handle
3302	* @param pvUser pointer to pState structure
3303	*/
3304	DECLCALLBACK(int) vmsvga3dXEventThread(RTTHREAD hThreadSelf, void *pvUser)
3305	{
3306	RT_NOREF(hThreadSelf);
3307	PVMSVGA3DSTATE pState = (PVMSVGA3DSTATE)pvUser;
3308	while (!pState->bTerminate)
3309	{
3310	while (XPending(pState->display) > 0)
3311	{
3312	XEvent event;
3313	XNextEvent(pState->display, &event);
3314
3315	switch (event.type)
3316	{
3317	default:
3318	break;
3319	}
3320	}
3321	/* sleep for 16ms to not burn too many cycles */
3322	RTThreadSleep(16);
3323	}
3324	return VINF_SUCCESS;
3325	}
3326	#endif // RT_OS_LINUX
3327
3328
3329	/**
3330	* Create a new 3d context
3331	*
3332	* @returns VBox status code.
3333	* @param pThis VGA device instance data.
3334	* @param cid Context id
3335	* @param fFlags VMSVGA3D_DEF_CTX_F_XXX.
3336	*/
3337	int vmsvga3dContextDefineOgl(PVGASTATE pThis, uint32_t cid, uint32_t fFlags)
3338	{
3339	int rc;
3340	PVMSVGA3DCONTEXT pContext;
3341	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
3342
3343	AssertReturn(pState, VERR_NO_MEMORY);
3344	AssertReturn( cid < SVGA3D_MAX_CONTEXT_IDS
3345	\|\| (cid == VMSVGA3D_SHARED_CTX_ID && (fFlags & VMSVGA3D_DEF_CTX_F_SHARED_CTX)), VERR_INVALID_PARAMETER);
3346	#if !defined(VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE) \|\| !(defined(RT_OS_DARWIN))
3347	AssertReturn(!(fFlags & VMSVGA3D_DEF_CTX_F_OTHER_PROFILE), VERR_INTERNAL_ERROR_3);
3348	#endif
3349
3350	Log(("vmsvga3dContextDefine id %x\n", cid));
3351	#ifdef DEBUG_DEBUG_GFX_WINDOW_TEST_CONTEXT
3352	if (pState->idTestContext == SVGA_ID_INVALID)
3353	{
3354	pState->idTestContext = 207;
3355	rc = vmsvga3dContextDefine(pThis, pState->idTestContext);
3356	AssertRCReturn(rc, rc);
3357	}
3358	#endif
3359
3360	if (cid == VMSVGA3D_SHARED_CTX_ID)
3361	pContext = &pState->SharedCtx;
3362	else
3363	{
3364	if (cid >= pState->cContexts)
3365	{
3366	/* Grow the array. */
3367	uint32_t cNew = RT_ALIGN(cid + 15, 16);
3368	void pvNew = RTMemRealloc(pState->papContexts, sizeof(pState->papContexts[0]) cNew);
3369	AssertReturn(pvNew, VERR_NO_MEMORY);
3370	pState->papContexts = (PVMSVGA3DCONTEXT *)pvNew;
3371	while (pState->cContexts < cNew)
3372	{
3373	pContext = (PVMSVGA3DCONTEXT)RTMemAllocZ(sizeof(*pContext));
3374	AssertReturn(pContext, VERR_NO_MEMORY);
3375	pContext->id = SVGA3D_INVALID_ID;
3376	pState->papContexts[pState->cContexts++] = pContext;
3377	}
3378	}
3379	/* If one already exists with this id, then destroy it now. */
3380	if (pState->papContexts[cid]->id != SVGA3D_INVALID_ID)
3381	vmsvga3dContextDestroy(pThis, cid);
3382
3383	pContext = pState->papContexts[cid];
3384	}
3385
3386	/*
3387	* Find or create the shared context if needed (necessary for sharing e.g. textures between contexts).
3388	*/
3389	PVMSVGA3DCONTEXT pSharedCtx = NULL;
3390	if (!(fFlags & (VMSVGA3D_DEF_CTX_F_INIT \| VMSVGA3D_DEF_CTX_F_SHARED_CTX)))
3391	{
3392	pSharedCtx = &pState->SharedCtx;
3393	if (pSharedCtx->id != VMSVGA3D_SHARED_CTX_ID)
3394	{
3395	rc = vmsvga3dContextDefineOgl(pThis, VMSVGA3D_SHARED_CTX_ID, VMSVGA3D_DEF_CTX_F_SHARED_CTX);
3396	AssertLogRelRCReturn(rc, rc);
3397	}
3398	}
3399
3400	/*
3401	* Initialize the context.
3402	*/
3403	memset(pContext, 0, sizeof(*pContext));
3404	pContext->id = cid;
3405	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); i++)
3406	pContext->aSidActiveTextures[i] = SVGA3D_INVALID_ID;
3407
3408	pContext->state.shidVertex = SVGA3D_INVALID_ID;
3409	pContext->state.shidPixel = SVGA3D_INVALID_ID;
3410	pContext->idFramebuffer = OPENGL_INVALID_ID;
3411	pContext->idReadFramebuffer = OPENGL_INVALID_ID;
3412	pContext->idDrawFramebuffer = OPENGL_INVALID_ID;
3413
3414	rc = ShaderContextCreate(&pContext->pShaderContext);
3415	AssertRCReturn(rc, rc);
3416
3417	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->state.aRenderTargets); i++)
3418	pContext->state.aRenderTargets[i] = SVGA3D_INVALID_ID;
3419
3420	AssertReturn(pThis->svga.u64HostWindowId, VERR_INTERNAL_ERROR);
3421
3422	#ifdef RT_OS_WINDOWS
3423	/* Create a context window. */
3424	CREATESTRUCT cs;
3425	cs.lpCreateParams = NULL;
3426	cs.dwExStyle = WS_EX_NOACTIVATE \| WS_EX_NOPARENTNOTIFY \| WS_EX_TRANSPARENT;
3427	# ifdef DEBUG_GFX_WINDOW
3428	cs.lpszName = (char *)RTMemAllocZ(256);
3429	RTStrPrintf((char *)cs.lpszName, 256, "Context %d OpenGL Window", cid);
3430	# else
3431	cs.lpszName = NULL;
3432	# endif
3433	cs.lpszClass = 0;
3434	# ifdef DEBUG_GFX_WINDOW
3435	cs.style = WS_CLIPSIBLINGS \| WS_CLIPCHILDREN \| WS_VISIBLE \| WS_CAPTION;
3436	# else
3437	cs.style = WS_CLIPSIBLINGS \| WS_CLIPCHILDREN \| WS_DISABLED \| WS_CHILD \| WS_VISIBLE;
3438	# endif
3439	cs.x = 0;
3440	cs.y = 0;
3441	cs.cx = pThis->svga.uWidth;
3442	cs.cy = pThis->svga.uHeight;
3443	cs.hwndParent = (HWND)pThis->svga.u64HostWindowId;
3444	cs.hMenu = NULL;
3445	cs.hInstance = pState->hInstance;
3446
3447	rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_CREATEWINDOW, (WPARAM)&pContext->hwnd, (LPARAM)&cs);
3448	AssertRCReturn(rc, rc);
3449
3450	pContext->hdc = GetDC(pContext->hwnd);
3451	AssertMsgReturn(pContext->hdc, ("GetDC %x failed with %d\n", pContext->hwnd, GetLastError()), VERR_INTERNAL_ERROR);
3452
3453	PIXELFORMATDESCRIPTOR pfd = {
3454	sizeof(PIXELFORMATDESCRIPTOR), /* size of this pfd */
3455	1, /* version number */
3456	PFD_DRAW_TO_WINDOW \| /* support window */
3457	PFD_DOUBLEBUFFER \| /* support double buffering */
3458	PFD_SUPPORT_OPENGL, /* support OpenGL */
3459	PFD_TYPE_RGBA, /* RGBA type */
3460	24, /* 24-bit color depth */
3461	0, 0, 0, 0, 0, 0, /* color bits ignored */
3462	8, /* alpha buffer */
3463	0, /* shift bit ignored */
3464	0, /* no accumulation buffer */
3465	0, 0, 0, 0, /* accum bits ignored */
3466	16, /* set depth buffer */
3467	16, /* set stencil buffer */
3468	0, /* no auxiliary buffer */
3469	PFD_MAIN_PLANE, /* main layer */
3470	0, /* reserved */
3471	0, 0, 0 /* layer masks ignored */
3472	};
3473	int pixelFormat;
3474	BOOL ret;
3475
3476	pixelFormat = ChoosePixelFormat(pContext->hdc, &pfd);
3477	/** @todo is this really necessary?? */
3478	pixelFormat = ChoosePixelFormat(pContext->hdc, &pfd);
3479	AssertMsgReturn(pixelFormat != 0, ("ChoosePixelFormat failed with %d\n", GetLastError()), VERR_INTERNAL_ERROR);
3480
3481	ret = SetPixelFormat(pContext->hdc, pixelFormat, &pfd);
3482	AssertMsgReturn(ret == TRUE, ("SetPixelFormat failed with %d\n", GetLastError()), VERR_INTERNAL_ERROR);
3483
3484	pContext->hglrc = wglCreateContext(pContext->hdc);
3485	AssertMsgReturn(pContext->hglrc, ("wglCreateContext %x failed with %d\n", pContext->hdc, GetLastError()), VERR_INTERNAL_ERROR);
3486
3487	if (pSharedCtx)
3488	{
3489	ret = wglShareLists(pSharedCtx->hglrc, pContext->hglrc);
3490	AssertMsg(ret == TRUE, ("wglShareLists(%p, %p) failed with %d\n", pSharedCtx->hglrc, pContext->hglrc, GetLastError()));
3491	}
3492
3493	#elif defined(RT_OS_DARWIN)
3494	pContext->fOtherProfile = RT_BOOL(fFlags & VMSVGA3D_DEF_CTX_F_OTHER_PROFILE);
3495
3496	NativeNSOpenGLContextRef pShareContext = pSharedCtx ? pSharedCtx->cocoaContext : NULL;
3497	NativeNSViewRef pHostView = (NativeNSViewRef)pThis->svga.u64HostWindowId;
3498	vmsvga3dCocoaCreateViewAndContext(&pContext->cocoaView, &pContext->cocoaContext,
3499	pSharedCtx ? NULL : pHostView, /* Only attach one subview, the one we'll present in. / /* @todo screen objects and stuff. */
3500	pThis->svga.uWidth, pThis->svga.uHeight,
3501	pShareContext, pContext->fOtherProfile);
3502
3503	#else
3504	Window hostWindow = (Window)pThis->svga.u64HostWindowId;
3505
3506	if (pState->display == NULL)
3507	{
3508	/* get an X display and make sure we have glX 1.3 */
3509	pState->display = XOpenDisplay(0);
3510	Assert(pState->display);
3511	int glxMajor, glxMinor;
3512	Bool ret = glXQueryVersion(pState->display, &glxMajor, &glxMinor);
3513	AssertMsgReturn(ret && glxMajor == 1 && glxMinor >= 3, ("glX >=1.3 not present"), VERR_INTERNAL_ERROR);
3514	/* start our X event handling thread */
3515	rc = RTThreadCreate(&pState->pWindowThread, vmsvga3dXEventThread, pState, 0, RTTHREADTYPE_GUI, RTTHREADFLAGS_WAITABLE, "VMSVGA3DXEVENT");
3516	if (RT_FAILURE(rc))
3517	{
3518	AssertMsgFailed(("%s: Async IO Thread creation for 3d window handling failed rc=%d\n", __FUNCTION__, rc));
3519	return rc;
3520	}
3521	}
3522	int attrib[] =
3523	{
3524	GLX_RGBA,
3525	GLX_RED_SIZE, 1,
3526	GLX_GREEN_SIZE, 1,
3527	GLX_BLUE_SIZE, 1,
3528	//GLX_ALPHA_SIZE, 1, this flips the bbos screen
3529	GLX_DOUBLEBUFFER,
3530	None
3531	};
3532	XVisualInfo *vi = glXChooseVisual(pState->display, DefaultScreen(pState->display), attrib);
3533	XSetWindowAttributes swa;
3534	swa.colormap = XCreateColormap(pState->display, XDefaultRootWindow(pState->display), vi->visual, AllocNone);
3535	swa.border_pixel = 0;
3536	swa.background_pixel = 0;
3537	swa.event_mask = StructureNotifyMask \| ExposureMask;
3538	unsigned long flags = CWBorderPixel \| CWBackPixel \| CWColormap \| CWEventMask;
3539	pContext->window = XCreateWindow(pState->display, hostWindow,//XDefaultRootWindow(pState->display),//hostWindow,
3540	0, 0, pThis->svga.uWidth, pThis->svga.uHeight,
3541	0, vi->depth, InputOutput,
3542	vi->visual, flags, &swa);
3543	AssertMsgReturn(pContext->window, ("XCreateWindow failed"), VERR_INTERNAL_ERROR);
3544	//uint32_t cardinal_alpha = (uint32_t) (0.5 * (uint32_t)-1); - unused
3545
3546	/* the window is hidden by default and only mapped when CommandPresent is executed on it */
3547
3548	GLXContext shareContext = pSharedCtx ? pSharedCtx->glxContext : NULL;
3549	pContext->glxContext = glXCreateContext(pState->display, vi, shareContext, GL_TRUE);
3550	AssertMsgReturn(pContext->glxContext, ("glXCreateContext failed"), VERR_INTERNAL_ERROR);
3551	#endif
3552
3553	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3554
3555	/* NULL during the first PowerOn call. */
3556	if (pState->ext.glGenFramebuffers)
3557	{
3558	/* Create a framebuffer object for this context. */
3559	pState->ext.glGenFramebuffers(1, &pContext->idFramebuffer);
3560	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3561
3562	/* Bind the object to the framebuffer target. */
3563	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer);
3564	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3565
3566	/* Create read and draw framebuffer objects for this context. */
3567	pState->ext.glGenFramebuffers(1, &pContext->idReadFramebuffer);
3568	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3569
3570	pState->ext.glGenFramebuffers(1, &pContext->idDrawFramebuffer);
3571	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3572
3573	}
3574	#if 0
3575	/** @todo move to shader lib!!! */
3576	/* Clear the screen */
3577	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3578
3579	glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
3580	glClearIndex(0);
3581	glClearDepth(1);
3582	glClearStencil(0xffff);
3583	glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
3584	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
3585	glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
3586	if (pState->ext.glProvokingVertex)
3587	pState->ext.glProvokingVertex(GL_FIRST_VERTEX_CONVENTION);
3588	/** @todo move to shader lib!!! */
3589	#endif
3590	return VINF_SUCCESS;
3591	}
3592
3593
3594	/**
3595	* Create a new 3d context
3596	*
3597	* @returns VBox status code.
3598	* @param pThis VGA device instance data.
3599	* @param cid Context id
3600	*/
3601	int vmsvga3dContextDefine(PVGASTATE pThis, uint32_t cid)
3602	{
3603	return vmsvga3dContextDefineOgl(pThis, cid, 0/fFlags/);
3604	}
3605
3606	/**
3607	* Destroys a 3d context.
3608	*
3609	* @returns VBox status code.
3610	* @param pThis VGA device instance data.
3611	* @param pContext The context to destroy.
3612	* @param cid Context id
3613	*/
3614	static int vmsvga3dContextDestroyOgl(PVGASTATE pThis, PVMSVGA3DCONTEXT pContext, uint32_t cid)
3615	{
3616	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
3617	AssertReturn(pState, VERR_NO_MEMORY);
3618	AssertReturn(pContext, VERR_INVALID_PARAMETER);
3619	AssertReturn(pContext->id == cid, VERR_INVALID_PARAMETER);
3620	Log(("vmsvga3dContextDestroyOgl id %x\n", cid));
3621
3622	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3623
3624	/* Destroy all leftover pixel shaders. */
3625	for (uint32_t i = 0; i < pContext->cPixelShaders; i++)
3626	{
3627	if (pContext->paPixelShader[i].id != SVGA3D_INVALID_ID)
3628	vmsvga3dShaderDestroy(pThis, pContext->paPixelShader[i].cid, pContext->paPixelShader[i].id, pContext->paPixelShader[i].type);
3629	}
3630	if (pContext->paPixelShader)
3631	RTMemFree(pContext->paPixelShader);
3632
3633	/* Destroy all leftover vertex shaders. */
3634	for (uint32_t i = 0; i < pContext->cVertexShaders; i++)
3635	{
3636	if (pContext->paVertexShader[i].id != SVGA3D_INVALID_ID)
3637	vmsvga3dShaderDestroy(pThis, pContext->paVertexShader[i].cid, pContext->paVertexShader[i].id, pContext->paVertexShader[i].type);
3638	}
3639	if (pContext->paVertexShader)
3640	RTMemFree(pContext->paVertexShader);
3641
3642	if (pContext->state.paVertexShaderConst)
3643	RTMemFree(pContext->state.paVertexShaderConst);
3644	if (pContext->state.paPixelShaderConst)
3645	RTMemFree(pContext->state.paPixelShaderConst);
3646
3647	if (pContext->pShaderContext)
3648	{
3649	int rc = ShaderContextDestroy(pContext->pShaderContext);
3650	AssertRC(rc);
3651	}
3652
3653	if (pContext->idFramebuffer != OPENGL_INVALID_ID)
3654	{
3655	/* Unbind the object from the framebuffer target. */
3656	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, 0 /* back buffer */);
3657	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3658	pState->ext.glDeleteFramebuffers(1, &pContext->idFramebuffer);
3659	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3660
3661	if (pContext->idReadFramebuffer != OPENGL_INVALID_ID)
3662	{
3663	pState->ext.glDeleteFramebuffers(1, &pContext->idReadFramebuffer);
3664	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3665	}
3666	if (pContext->idDrawFramebuffer != OPENGL_INVALID_ID)
3667	{
3668	pState->ext.glDeleteFramebuffers(1, &pContext->idDrawFramebuffer);
3669	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3670	}
3671	}
3672
3673	vmsvga3dOcclusionQueryDelete(pState, pContext);
3674
3675	#ifdef RT_OS_WINDOWS
3676	wglMakeCurrent(pContext->hdc, NULL);
3677	wglDeleteContext(pContext->hglrc);
3678	ReleaseDC(pContext->hwnd, pContext->hdc);
3679
3680	/* Destroy the window we've created. */
3681	int rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_DESTROYWINDOW, (WPARAM)pContext->hwnd, 0);
3682	AssertRC(rc);
3683	#elif defined(RT_OS_DARWIN)
3684	vmsvga3dCocoaDestroyViewAndContext(pContext->cocoaView, pContext->cocoaContext);
3685	#elif defined(RT_OS_LINUX)
3686	glXMakeCurrent(pState->display, None, NULL);
3687	glXDestroyContext(pState->display, pContext->glxContext);
3688	XDestroyWindow(pState->display, pContext->window);
3689	#endif
3690
3691	memset(pContext, 0, sizeof(*pContext));
3692	pContext->id = SVGA3D_INVALID_ID;
3693
3694	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3695	return VINF_SUCCESS;
3696	}
3697
3698	/**
3699	* Destroy an existing 3d context
3700	*
3701	* @returns VBox status code.
3702	* @param pThis VGA device instance data.
3703	* @param cid Context id
3704	*/
3705	int vmsvga3dContextDestroy(PVGASTATE pThis, uint32_t cid)
3706	{
3707	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
3708	AssertReturn(pState, VERR_WRONG_ORDER);
3709
3710	/*
3711	* Resolve the context and hand it to the common worker function.
3712	*/
3713	if ( cid < pState->cContexts
3714	&& pState->papContexts[cid]->id == cid)
3715	return vmsvga3dContextDestroyOgl(pThis, pState->papContexts[cid], cid);
3716
3717	AssertReturn(cid < SVGA3D_MAX_CONTEXT_IDS, VERR_INVALID_PARAMETER);
3718	return VINF_SUCCESS;
3719	}
3720
3721	/**
3722	* Worker for vmsvga3dChangeMode that resizes a context.
3723	*
3724	* @param pThis The VGA device instance data.
3725	* @param pState The VMSVGA3d state.
3726	* @param pContext The context.
3727	*/
3728	static void vmsvga3dChangeModeOneContext(PVGASTATE pThis, PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
3729	{
3730	#ifdef RT_OS_WINDOWS
3731	/* Resize the window. */
3732	CREATESTRUCT cs;
3733	RT_ZERO(cs);
3734	cs.cx = pThis->svga.uWidth;
3735	cs.cy = pThis->svga.uHeight;
3736	int rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_RESIZEWINDOW, (WPARAM)pContext->hwnd, (LPARAM)&cs);
3737	AssertRC(rc);
3738
3739	#elif defined(RT_OS_DARWIN)
3740	RT_NOREF(pState);
3741	vmsvga3dCocoaViewSetSize(pContext->cocoaView, pThis->svga.uWidth, pThis->svga.uHeight);
3742
3743	#elif defined(RT_OS_LINUX)
3744	XWindowChanges wc;
3745	wc.width = pThis->svga.uWidth;
3746	wc.height = pThis->svga.uHeight;
3747	XConfigureWindow(pState->display, pContext->window, CWWidth \| CWHeight, &wc);
3748	#endif
3749	}
3750
3751	/* Handle resize */
3752	int vmsvga3dChangeMode(PVGASTATE pThis)
3753	{
3754	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
3755	AssertReturn(pState, VERR_NO_MEMORY);
3756
3757	/* Resize the shared context too. */
3758	if (pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
3759	vmsvga3dChangeModeOneContext(pThis, pState, &pState->SharedCtx);
3760
3761	/* Resize all active contexts. */
3762	for (uint32_t i = 0; i < pState->cContexts; i++)
3763	{
3764	PVMSVGA3DCONTEXT pContext = pState->papContexts[i];
3765	if (pContext->id != SVGA3D_INVALID_ID)
3766	vmsvga3dChangeModeOneContext(pThis, pState, pContext);
3767	}
3768
3769	return VINF_SUCCESS;
3770	}
3771
3772
3773	int vmsvga3dSetTransform(PVGASTATE pThis, uint32_t cid, SVGA3dTransformType type, float matrix[16])
3774	{
3775	PVMSVGA3DCONTEXT pContext;
3776	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
3777	AssertReturn(pState, VERR_NO_MEMORY);
3778	bool fModelViewChanged = false;
3779
3780	Log(("vmsvga3dSetTransform cid=%x %s\n", cid, vmsvgaTransformToString(type)));
3781
3782	if ( cid >= pState->cContexts
3783	\|\| pState->papContexts[cid]->id != cid)
3784	{
3785	Log(("vmsvga3dSetTransform invalid context id!\n"));
3786	return VERR_INVALID_PARAMETER;
3787	}
3788	pContext = pState->papContexts[cid];
3789	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3790
3791	/* Save this matrix for vm state save/restore. */
3792	pContext->state.aTransformState[type].fValid = true;
3793	memcpy(pContext->state.aTransformState[type].matrix, matrix, sizeof(pContext->state.aTransformState[type].matrix));
3794	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_TRANSFORM;
3795
3796	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)));
3797	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)));
3798	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)));
3799	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)));
3800
3801	switch (type)
3802	{
3803	case SVGA3D_TRANSFORM_VIEW:
3804	/* View * World = Model View */
3805	glMatrixMode(GL_MODELVIEW);
3806	glLoadMatrixf(matrix);
3807	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_WORLD].fValid)
3808	glMultMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_WORLD].matrix);
3809	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3810	fModelViewChanged = true;
3811	break;
3812
3813	case SVGA3D_TRANSFORM_PROJECTION:
3814	{
3815	int rc = ShaderTransformProjection(pContext->state.RectViewPort.w, pContext->state.RectViewPort.h, matrix, false /* fPretransformed */);
3816	AssertRCReturn(rc, rc);
3817	break;
3818	}
3819
3820	case SVGA3D_TRANSFORM_TEXTURE0:
3821	glMatrixMode(GL_TEXTURE);
3822	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3823	glLoadMatrixf(matrix);
3824	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3825	break;
3826
3827	case SVGA3D_TRANSFORM_TEXTURE1:
3828	case SVGA3D_TRANSFORM_TEXTURE2:
3829	case SVGA3D_TRANSFORM_TEXTURE3:
3830	case SVGA3D_TRANSFORM_TEXTURE4:
3831	case SVGA3D_TRANSFORM_TEXTURE5:
3832	case SVGA3D_TRANSFORM_TEXTURE6:
3833	case SVGA3D_TRANSFORM_TEXTURE7:
3834	Log(("vmsvga3dSetTransform: unsupported SVGA3D_TRANSFORM_TEXTUREx transform!!\n"));
3835	return VERR_INVALID_PARAMETER;
3836
3837	case SVGA3D_TRANSFORM_WORLD:
3838	/* View * World = Model View */
3839	glMatrixMode(GL_MODELVIEW);
3840	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].fValid)
3841	glLoadMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
3842	else
3843	glLoadIdentity();
3844	glMultMatrixf(matrix);
3845	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3846	fModelViewChanged = true;
3847	break;
3848
3849	case SVGA3D_TRANSFORM_WORLD1:
3850	case SVGA3D_TRANSFORM_WORLD2:
3851	case SVGA3D_TRANSFORM_WORLD3:
3852	Log(("vmsvga3dSetTransform: unsupported SVGA3D_TRANSFORM_WORLDx transform!!\n"));
3853	return VERR_INVALID_PARAMETER;
3854
3855	default:
3856	Log(("vmsvga3dSetTransform: unknown type!!\n"));
3857	return VERR_INVALID_PARAMETER;
3858	}
3859
3860	/* Apparently we need to reset the light and clip data after modifying the modelview matrix. */
3861	if (fModelViewChanged)
3862	{
3863	/* Reprogram the clip planes. */
3864	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aClipPlane); j++)
3865	{
3866	if (pContext->state.aClipPlane[j].fValid == true)
3867	vmsvga3dSetClipPlane(pThis, cid, j, pContext->state.aClipPlane[j].plane);
3868	}
3869
3870	/* Reprogram the light data. */
3871	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aLightData); j++)
3872	{
3873	if (pContext->state.aLightData[j].fValidData == true)
3874	vmsvga3dSetLightData(pThis, cid, j, &pContext->state.aLightData[j].data);
3875	}
3876	}
3877
3878	return VINF_SUCCESS;
3879	}
3880
3881	int vmsvga3dSetZRange(PVGASTATE pThis, uint32_t cid, SVGA3dZRange zRange)
3882	{
3883	PVMSVGA3DCONTEXT pContext;
3884	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
3885	AssertReturn(pState, VERR_NO_MEMORY);
3886
3887	Log(("vmsvga3dSetZRange cid=%x min=%d max=%d\n", cid, (uint32_t)(zRange.min * 100.0), (uint32_t)(zRange.max * 100.0)));
3888
3889	if ( cid >= pState->cContexts
3890	\|\| pState->papContexts[cid]->id != cid)
3891	{
3892	Log(("vmsvga3dSetZRange invalid context id!\n"));
3893	return VERR_INVALID_PARAMETER;
3894	}
3895	pContext = pState->papContexts[cid];
3896	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3897
3898	pContext->state.zRange = zRange;
3899	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_ZRANGE;
3900
3901	if (zRange.min < -1.0)
3902	zRange.min = -1.0;
3903	if (zRange.max > 1.0)
3904	zRange.max = 1.0;
3905
3906	glDepthRange((GLdouble)zRange.min, (GLdouble)zRange.max);
3907	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3908	return VINF_SUCCESS;
3909	}
3910
3911	/**
3912	* Convert SVGA blend op value to its OpenGL equivalent
3913	*/
3914	static GLenum vmsvga3dBlendOp2GL(uint32_t blendOp)
3915	{
3916	switch (blendOp)
3917	{
3918	case SVGA3D_BLENDOP_ZERO:
3919	return GL_ZERO;
3920	case SVGA3D_BLENDOP_ONE:
3921	return GL_ONE;
3922	case SVGA3D_BLENDOP_SRCCOLOR:
3923	return GL_SRC_COLOR;
3924	case SVGA3D_BLENDOP_INVSRCCOLOR:
3925	return GL_ONE_MINUS_SRC_COLOR;
3926	case SVGA3D_BLENDOP_SRCALPHA:
3927	return GL_SRC_ALPHA;
3928	case SVGA3D_BLENDOP_INVSRCALPHA:
3929	return GL_ONE_MINUS_SRC_ALPHA;
3930	case SVGA3D_BLENDOP_DESTALPHA:
3931	return GL_DST_ALPHA;
3932	case SVGA3D_BLENDOP_INVDESTALPHA:
3933	return GL_ONE_MINUS_DST_ALPHA;
3934	case SVGA3D_BLENDOP_DESTCOLOR:
3935	return GL_DST_COLOR;
3936	case SVGA3D_BLENDOP_INVDESTCOLOR:
3937	return GL_ONE_MINUS_DST_COLOR;
3938	case SVGA3D_BLENDOP_SRCALPHASAT:
3939	return GL_SRC_ALPHA_SATURATE;
3940	case SVGA3D_BLENDOP_BLENDFACTOR:
3941	return GL_CONSTANT_ALPHA; /** @todo correct?? */
3942	case SVGA3D_BLENDOP_INVBLENDFACTOR:
3943	return GL_ONE_MINUS_CONSTANT_ALPHA; /** @todo correct?? */
3944	default:
3945	AssertFailed();
3946	return GL_ONE;
3947	}
3948	}
3949
3950	static GLenum vmsvga3dBlendEquation2GL(uint32_t blendEq)
3951	{
3952	switch (blendEq)
3953	{
3954	case SVGA3D_BLENDEQ_ADD:
3955	return GL_FUNC_ADD;
3956	case SVGA3D_BLENDEQ_SUBTRACT:
3957	return GL_FUNC_SUBTRACT;
3958	case SVGA3D_BLENDEQ_REVSUBTRACT:
3959	return GL_FUNC_REVERSE_SUBTRACT;
3960	case SVGA3D_BLENDEQ_MINIMUM:
3961	return GL_MIN;
3962	case SVGA3D_BLENDEQ_MAXIMUM:
3963	return GL_MAX;
3964	default:
3965	/* SVGA3D_BLENDEQ_INVALID means that the render state has not been set, therefore use default. */
3966	AssertMsg(blendEq == SVGA3D_BLENDEQ_INVALID, ("blendEq=%d (%#x)\n", blendEq, blendEq));
3967	return GL_FUNC_ADD;
3968	}
3969	}
3970
3971	static GLenum vmsvgaCmpFunc2GL(uint32_t cmpFunc)
3972	{
3973	switch (cmpFunc)
3974	{
3975	case SVGA3D_CMP_NEVER:
3976	return GL_NEVER;
3977	case SVGA3D_CMP_LESS:
3978	return GL_LESS;
3979	case SVGA3D_CMP_EQUAL:
3980	return GL_EQUAL;
3981	case SVGA3D_CMP_LESSEQUAL:
3982	return GL_LEQUAL;
3983	case SVGA3D_CMP_GREATER:
3984	return GL_GREATER;
3985	case SVGA3D_CMP_NOTEQUAL:
3986	return GL_NOTEQUAL;
3987	case SVGA3D_CMP_GREATEREQUAL:
3988	return GL_GEQUAL;
3989	case SVGA3D_CMP_ALWAYS:
3990	return GL_ALWAYS;
3991	default:
3992	Assert(cmpFunc == SVGA3D_CMP_INVALID);
3993	return GL_LESS;
3994	}
3995	}
3996
3997	static GLenum vmsvgaStencipOp2GL(uint32_t stencilOp)
3998	{
3999	switch (stencilOp)
4000	{
4001	case SVGA3D_STENCILOP_KEEP:
4002	return GL_KEEP;
4003	case SVGA3D_STENCILOP_ZERO:
4004	return GL_ZERO;
4005	case SVGA3D_STENCILOP_REPLACE:
4006	return GL_REPLACE;
4007	case SVGA3D_STENCILOP_INCRSAT:
4008	return GL_INCR_WRAP;
4009	case SVGA3D_STENCILOP_DECRSAT:
4010	return GL_DECR_WRAP;
4011	case SVGA3D_STENCILOP_INVERT:
4012	return GL_INVERT;
4013	case SVGA3D_STENCILOP_INCR:
4014	return GL_INCR;
4015	case SVGA3D_STENCILOP_DECR:
4016	return GL_DECR;
4017	default:
4018	Assert(stencilOp == SVGA3D_STENCILOP_INVALID);
4019	return GL_KEEP;
4020	}
4021	}
4022
4023	int vmsvga3dSetRenderState(PVGASTATE pThis, uint32_t cid, uint32_t cRenderStates, SVGA3dRenderState *pRenderState)
4024	{
4025	uint32_t val = UINT32_MAX; /* Shut up MSC. */
4026	PVMSVGA3DCONTEXT pContext;
4027	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
4028	AssertReturn(pState, VERR_NO_MEMORY);
4029
4030	Log(("vmsvga3dSetRenderState cid=%x cRenderStates=%d\n", cid, cRenderStates));
4031
4032	if ( cid >= pState->cContexts
4033	\|\| pState->papContexts[cid]->id != cid)
4034	{
4035	Log(("vmsvga3dSetRenderState invalid context id!\n"));
4036	return VERR_INVALID_PARAMETER;
4037	}
4038	pContext = pState->papContexts[cid];
4039	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4040
4041	for (unsigned i = 0; i < cRenderStates; i++)
4042	{
4043	GLenum enableCap = ~(GLenum)0;
4044	Log(("vmsvga3dSetRenderState: cid=%x state=%s (%d) val=%x\n", cid, vmsvga3dGetRenderStateName(pRenderState[i].state), pRenderState[i].state, pRenderState[i].uintValue));
4045	/* Save the render state for vm state saving. */
4046	if (pRenderState[i].state < SVGA3D_RS_MAX)
4047	pContext->state.aRenderState[pRenderState[i].state] = pRenderState[i];
4048
4049	switch (pRenderState[i].state)
4050	{
4051	case SVGA3D_RS_ZENABLE: /* SVGA3dBool */
4052	enableCap = GL_DEPTH_TEST;
4053	val = pRenderState[i].uintValue;
4054	break;
4055
4056	case SVGA3D_RS_ZWRITEENABLE: /* SVGA3dBool */
4057	glDepthMask(!!pRenderState[i].uintValue);
4058	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4059	break;
4060
4061	case SVGA3D_RS_ALPHATESTENABLE: /* SVGA3dBool */
4062	enableCap = GL_ALPHA_TEST;
4063	val = pRenderState[i].uintValue;
4064	break;
4065
4066	case SVGA3D_RS_DITHERENABLE: /* SVGA3dBool */
4067	enableCap = GL_DITHER;
4068	val = pRenderState[i].uintValue;
4069	break;
4070
4071	case SVGA3D_RS_FOGENABLE: /* SVGA3dBool */
4072	enableCap = GL_FOG;
4073	val = pRenderState[i].uintValue;
4074	break;
4075
4076	case SVGA3D_RS_SPECULARENABLE: /* SVGA3dBool */
4077	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4078	break;
4079
4080	case SVGA3D_RS_LIGHTINGENABLE: /* SVGA3dBool */
4081	enableCap = GL_LIGHTING;
4082	val = pRenderState[i].uintValue;
4083	break;
4084
4085	case SVGA3D_RS_NORMALIZENORMALS: /* SVGA3dBool */
4086	/* not applicable */
4087	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4088	break;
4089
4090	case SVGA3D_RS_POINTSPRITEENABLE: /* SVGA3dBool */
4091	enableCap = GL_POINT_SPRITE_ARB;
4092	val = pRenderState[i].uintValue;
4093	break;
4094
4095	case SVGA3D_RS_POINTSIZE: /* float */
4096	/** @todo we need to apply scaling for point sizes below the min or above the max; see Wine) */
4097	if (pRenderState[i].floatValue < pState->caps.flPointSize[0])
4098	pRenderState[i].floatValue = pState->caps.flPointSize[0];
4099	if (pRenderState[i].floatValue > pState->caps.flPointSize[1])
4100	pRenderState[i].floatValue = pState->caps.flPointSize[1];
4101
4102	glPointSize(pRenderState[i].floatValue);
4103	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4104	Log(("SVGA3D_RS_POINTSIZE: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4105	break;
4106
4107	case SVGA3D_RS_POINTSIZEMIN: /* float */
4108	pState->ext.glPointParameterf(GL_POINT_SIZE_MIN, pRenderState[i].floatValue);
4109	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4110	Log(("SVGA3D_RS_POINTSIZEMIN: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4111	break;
4112
4113	case SVGA3D_RS_POINTSIZEMAX: /* float */
4114	pState->ext.glPointParameterf(GL_POINT_SIZE_MAX, pRenderState[i].floatValue);
4115	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4116	Log(("SVGA3D_RS_POINTSIZEMAX: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4117	break;
4118
4119	case SVGA3D_RS_POINTSCALEENABLE: /* SVGA3dBool */
4120	case SVGA3D_RS_POINTSCALE_A: /* float */
4121	case SVGA3D_RS_POINTSCALE_B: /* float */
4122	case SVGA3D_RS_POINTSCALE_C: /* float */
4123	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4124	break;
4125
4126	case SVGA3D_RS_AMBIENT: /* SVGA3dColor */
4127	{
4128	GLfloat color[4]; /* red, green, blue, alpha */
4129
4130	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &color[0], &color[1], &color[2], &color[3]);
4131
4132	glLightModelfv(GL_LIGHT_MODEL_AMBIENT, color);
4133	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4134	break;
4135	}
4136
4137	case SVGA3D_RS_CLIPPLANEENABLE: /* SVGA3dClipPlanes */
4138	{
4139	AssertCompile(SVGA3D_CLIPPLANE_MAX == (1 << 5));
4140	for (uint32_t j = 0; j <= 5; j++)
4141	{
4142	if (pRenderState[i].uintValue & RT_BIT(j))
4143	glEnable(GL_CLIP_PLANE0 + j);
4144	else
4145	glDisable(GL_CLIP_PLANE0 + j);
4146	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4147	}
4148	break;
4149	}
4150
4151	case SVGA3D_RS_FOGCOLOR: /* SVGA3dColor */
4152	{
4153	GLfloat color[4]; /* red, green, blue, alpha */
4154
4155	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &color[0], &color[1], &color[2], &color[3]);
4156
4157	glFogfv(GL_FOG_COLOR, color);
4158	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4159	break;
4160	}
4161
4162	case SVGA3D_RS_FOGSTART: /* float */
4163	glFogf(GL_FOG_START, pRenderState[i].floatValue);
4164	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4165	break;
4166
4167	case SVGA3D_RS_FOGEND: /* float */
4168	glFogf(GL_FOG_END, pRenderState[i].floatValue);
4169	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4170	break;
4171
4172	case SVGA3D_RS_FOGDENSITY: /* float */
4173	glFogf(GL_FOG_DENSITY, pRenderState[i].floatValue);
4174	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4175	break;
4176
4177	case SVGA3D_RS_RANGEFOGENABLE: /* SVGA3dBool */
4178	glFogi(GL_FOG_COORD_SRC, (pRenderState[i].uintValue) ? GL_FOG_COORD : GL_FRAGMENT_DEPTH);
4179	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4180	break;
4181
4182	case SVGA3D_RS_FOGMODE: /* SVGA3dFogMode */
4183	{
4184	SVGA3dFogMode mode;
4185	mode.uintValue = pRenderState[i].uintValue;
4186
4187	enableCap = GL_FOG_MODE;
4188	switch (mode.s.function)
4189	{
4190	case SVGA3D_FOGFUNC_EXP:
4191	val = GL_EXP;
4192	break;
4193	case SVGA3D_FOGFUNC_EXP2:
4194	val = GL_EXP2;
4195	break;
4196	case SVGA3D_FOGFUNC_LINEAR:
4197	val = GL_LINEAR;
4198	break;
4199	default:
4200	AssertMsgFailedReturn(("Unexpected fog function %d\n", mode.s.function), VERR_INTERNAL_ERROR);
4201	break;
4202	}
4203
4204	/** @todo how to switch between vertex and pixel fog modes??? */
4205	Assert(mode.s.type == SVGA3D_FOGTYPE_PIXEL);
4206	#if 0
4207	/* The fog type determines the render state. */
4208	switch (mode.s.type)
4209	{
4210	case SVGA3D_FOGTYPE_VERTEX:
4211	renderState = D3DRS_FOGVERTEXMODE;
4212	break;
4213	case SVGA3D_FOGTYPE_PIXEL:
4214	renderState = D3DRS_FOGTABLEMODE;
4215	break;
4216	default:
4217	AssertMsgFailedReturn(("Unexpected fog type %d\n", mode.s.type), VERR_INTERNAL_ERROR);
4218	break;
4219	}
4220	#endif
4221
4222	/* Set the fog base to depth or range. */
4223	switch (mode.s.base)
4224	{
4225	case SVGA3D_FOGBASE_DEPTHBASED:
4226	glFogi(GL_FOG_COORD_SRC, GL_FRAGMENT_DEPTH);
4227	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4228	break;
4229	case SVGA3D_FOGBASE_RANGEBASED:
4230	glFogi(GL_FOG_COORD_SRC, GL_FOG_COORD);
4231	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4232	break;
4233	default:
4234	/* ignore */
4235	AssertMsgFailed(("Unexpected fog base %d\n", mode.s.base));
4236	break;
4237	}
4238	break;
4239	}
4240
4241	case SVGA3D_RS_FILLMODE: /* SVGA3dFillMode */
4242	{
4243	SVGA3dFillMode mode;
4244
4245	mode.uintValue = pRenderState[i].uintValue;
4246
4247	switch (mode.s.mode)
4248	{
4249	case SVGA3D_FILLMODE_POINT:
4250	val = GL_POINT;
4251	break;
4252	case SVGA3D_FILLMODE_LINE:
4253	val = GL_LINE;
4254	break;
4255	case SVGA3D_FILLMODE_FILL:
4256	val = GL_FILL;
4257	break;
4258	default:
4259	AssertMsgFailedReturn(("Unexpected fill mode %d\n", mode.s.mode), VERR_INTERNAL_ERROR);
4260	break;
4261	}
4262	/* @note only front and back faces */
4263	Assert(mode.s.face == SVGA3D_FACE_FRONT_BACK);
4264	glPolygonMode(GL_FRONT_AND_BACK, val);
4265	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4266	break;
4267	}
4268
4269	case SVGA3D_RS_SHADEMODE: /* SVGA3dShadeMode */
4270	switch (pRenderState[i].uintValue)
4271	{
4272	case SVGA3D_SHADEMODE_FLAT:
4273	val = GL_FLAT;
4274	break;
4275
4276	case SVGA3D_SHADEMODE_SMOOTH:
4277	val = GL_SMOOTH;
4278	break;
4279
4280	default:
4281	AssertMsgFailedReturn(("Unexpected shade mode %d\n", pRenderState[i].uintValue), VERR_INTERNAL_ERROR);
4282	break;
4283	}
4284
4285	glShadeModel(val);
4286	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4287	break;
4288
4289	case SVGA3D_RS_LINEPATTERN: /* SVGA3dLinePattern */
4290	/* No longer supported by d3d; mesagl comments suggest not all backends support it */
4291	/** @todo */
4292	Log(("WARNING: SVGA3D_RS_LINEPATTERN %x not supported!!\n", pRenderState[i].uintValue));
4293	/*
4294	renderState = D3DRS_LINEPATTERN;
4295	val = pRenderState[i].uintValue;
4296	*/
4297	break;
4298
4299	case SVGA3D_RS_LINEAA: /* SVGA3dBool */
4300	enableCap = GL_LINE_SMOOTH;
4301	val = pRenderState[i].uintValue;
4302	break;
4303
4304	case SVGA3D_RS_LINEWIDTH: /* float */
4305	glLineWidth(pRenderState[i].floatValue);
4306	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4307	break;
4308
4309	case SVGA3D_RS_SEPARATEALPHABLENDENABLE: /* SVGA3dBool */
4310	{
4311	/* Refresh the blending state based on the new enable setting.
4312	* This will take existing states and set them using either glBlend* or glBlend*Separate.
4313	*/
4314	static SVGA3dRenderStateName const saRefreshState[] =
4315	{
4316	SVGA3D_RS_SRCBLEND,
4317	SVGA3D_RS_BLENDEQUATION
4318	};
4319	SVGA3dRenderState renderstate[RT_ELEMENTS(saRefreshState)];
4320	for (uint32_t j = 0; j < RT_ELEMENTS(saRefreshState); ++j)
4321	{
4322	renderstate[j].state = saRefreshState[j];
4323	renderstate[j].uintValue = pContext->state.aRenderState[saRefreshState[j]].uintValue;
4324	}
4325
4326	int rc = vmsvga3dSetRenderState(pThis, cid, 2, renderstate);
4327	AssertRCReturn(rc, rc);
4328
4329	if (pContext->state.aRenderState[SVGA3D_RS_BLENDENABLE].uintValue != 0)
4330	continue; /* Ignore if blend is enabled */
4331	/* Apply SVGA3D_RS_SEPARATEALPHABLENDENABLE as SVGA3D_RS_BLENDENABLE */
4332	} RT_FALL_THRU();
4333
4334	case SVGA3D_RS_BLENDENABLE: /* SVGA3dBool */
4335	enableCap = GL_BLEND;
4336	val = pRenderState[i].uintValue;
4337	break;
4338
4339	case SVGA3D_RS_SRCBLENDALPHA: /* SVGA3dBlendOp */
4340	case SVGA3D_RS_DSTBLENDALPHA: /* SVGA3dBlendOp */
4341	case SVGA3D_RS_SRCBLEND: /* SVGA3dBlendOp */
4342	case SVGA3D_RS_DSTBLEND: /* SVGA3dBlendOp */
4343	{
4344	GLint srcRGB, srcAlpha, dstRGB, dstAlpha;
4345	GLint blendop = vmsvga3dBlendOp2GL(pRenderState[i].uintValue);
4346
4347	glGetIntegerv(GL_BLEND_SRC_RGB, &srcRGB);
4348	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4349	glGetIntegerv(GL_BLEND_DST_RGB, &dstRGB);
4350	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4351	glGetIntegerv(GL_BLEND_DST_ALPHA, &dstAlpha);
4352	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4353	glGetIntegerv(GL_BLEND_SRC_ALPHA, &srcAlpha);
4354	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4355
4356	switch (pRenderState[i].state)
4357	{
4358	case SVGA3D_RS_SRCBLEND:
4359	srcRGB = blendop;
4360	break;
4361	case SVGA3D_RS_DSTBLEND:
4362	dstRGB = blendop;
4363	break;
4364	case SVGA3D_RS_SRCBLENDALPHA:
4365	srcAlpha = blendop;
4366	break;
4367	case SVGA3D_RS_DSTBLENDALPHA:
4368	dstAlpha = blendop;
4369	break;
4370	default:
4371	/* not possible; shut up gcc */
4372	AssertFailed();
4373	break;
4374	}
4375
4376	if (pContext->state.aRenderState[SVGA3D_RS_SEPARATEALPHABLENDENABLE].uintValue != 0)
4377	pState->ext.glBlendFuncSeparate(srcRGB, dstRGB, srcAlpha, dstAlpha);
4378	else
4379	glBlendFunc(srcRGB, dstRGB);
4380	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4381	break;
4382	}
4383
4384	case SVGA3D_RS_BLENDEQUATIONALPHA: /* SVGA3dBlendEquation */
4385	case SVGA3D_RS_BLENDEQUATION: /* SVGA3dBlendEquation */
4386	if (pContext->state.aRenderState[SVGA3D_RS_SEPARATEALPHABLENDENABLE].uintValue != 0)
4387	{
4388	GLenum const modeRGB = vmsvga3dBlendEquation2GL(pContext->state.aRenderState[SVGA3D_RS_BLENDEQUATION].uintValue);
4389	GLenum const modeAlpha = vmsvga3dBlendEquation2GL(pContext->state.aRenderState[SVGA3D_RS_BLENDEQUATIONALPHA].uintValue);
4390	pState->ext.glBlendEquationSeparate(modeRGB, modeAlpha);
4391	}
4392	else
4393	{
4394	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x102
4395	glBlendEquation(vmsvga3dBlendEquation2GL(pRenderState[i].uintValue));
4396	#else
4397	pState->ext.glBlendEquation(vmsvga3dBlendEquation2GL(pRenderState[i].uintValue));
4398	#endif
4399	}
4400	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4401	break;
4402
4403	case SVGA3D_RS_BLENDCOLOR: /* SVGA3dColor */
4404	{
4405	GLfloat red, green, blue, alpha;
4406
4407	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &red, &green, &blue, &alpha);
4408
4409	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x102
4410	glBlendColor(red, green, blue, alpha);
4411	#else
4412	pState->ext.glBlendColor(red, green, blue, alpha);
4413	#endif
4414	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4415	break;
4416	}
4417
4418	case SVGA3D_RS_CULLMODE: /* SVGA3dFace */
4419	{
4420	GLenum mode = GL_BACK; /* default for OpenGL */
4421
4422	switch (pRenderState[i].uintValue)
4423	{
4424	case SVGA3D_FACE_NONE:
4425	break;
4426	case SVGA3D_FACE_FRONT:
4427	mode = GL_FRONT;
4428	break;
4429	case SVGA3D_FACE_BACK:
4430	mode = GL_BACK;
4431	break;
4432	case SVGA3D_FACE_FRONT_BACK:
4433	mode = GL_FRONT_AND_BACK;
4434	break;
4435	default:
4436	AssertMsgFailedReturn(("Unexpected cull mode %d\n", pRenderState[i].uintValue), VERR_INTERNAL_ERROR);
4437	break;
4438	}
4439	enableCap = GL_CULL_FACE;
4440	if (pRenderState[i].uintValue != SVGA3D_FACE_NONE)
4441	{
4442	glCullFace(mode);
4443	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4444	val = 1;
4445	}
4446	else
4447	val = 0;
4448	break;
4449	}
4450
4451	case SVGA3D_RS_ZFUNC: /* SVGA3dCmpFunc */
4452	glDepthFunc(vmsvgaCmpFunc2GL(pRenderState[i].uintValue));
4453	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4454	break;
4455
4456	case SVGA3D_RS_ALPHAFUNC: /* SVGA3dCmpFunc */
4457	{
4458	GLclampf ref;
4459
4460	glGetFloatv(GL_ALPHA_TEST_REF, &ref);
4461	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4462	glAlphaFunc(vmsvgaCmpFunc2GL(pRenderState[i].uintValue), ref);
4463	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4464	break;
4465	}
4466
4467	case SVGA3D_RS_ALPHAREF: /* float (0.0 .. 1.0) */
4468	{
4469	GLint func;
4470
4471	glGetIntegerv(GL_ALPHA_TEST_FUNC, &func);
4472	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4473	glAlphaFunc(func, pRenderState[i].floatValue);
4474	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4475	break;
4476	}
4477
4478	case SVGA3D_RS_STENCILENABLE2SIDED: /* SVGA3dBool */
4479	{
4480	/* Refresh the stencil state based on the new enable setting.
4481	* This will take existing states and set them using either glStencil or glStencil*Separate.
4482	*/
4483	static SVGA3dRenderStateName const saRefreshState[] =
4484	{
4485	SVGA3D_RS_STENCILFUNC,
4486	SVGA3D_RS_STENCILFAIL,
4487	SVGA3D_RS_CCWSTENCILFUNC,
4488	SVGA3D_RS_CCWSTENCILFAIL
4489	};
4490	SVGA3dRenderState renderstate[RT_ELEMENTS(saRefreshState)];
4491	for (uint32_t j = 0; j < RT_ELEMENTS(saRefreshState); ++j)
4492	{
4493	renderstate[j].state = saRefreshState[j];
4494	renderstate[j].uintValue = pContext->state.aRenderState[saRefreshState[j]].uintValue;
4495	}
4496
4497	int rc = vmsvga3dSetRenderState(pThis, cid, RT_ELEMENTS(renderstate), renderstate);
4498	AssertRCReturn(rc, rc);
4499
4500	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE].uintValue != 0)
4501	continue; /* Ignore if stencil is enabled */
4502	/* Apply SVGA3D_RS_STENCILENABLE2SIDED as SVGA3D_RS_STENCILENABLE. */
4503	} RT_FALL_THRU();
4504
4505	case SVGA3D_RS_STENCILENABLE: /* SVGA3dBool */
4506	enableCap = GL_STENCIL_TEST;
4507	val = pRenderState[i].uintValue;
4508	break;
4509
4510	case SVGA3D_RS_STENCILFUNC: /* SVGA3dCmpFunc */
4511	case SVGA3D_RS_STENCILREF: /* uint32_t */
4512	case SVGA3D_RS_STENCILMASK: /* uint32_t */
4513	{
4514	GLint func, ref;
4515	GLuint mask;
4516
4517	/* Query current values to have all parameters for glStencilFunc[Separate]. */
4518	glGetIntegerv(GL_STENCIL_FUNC, &func);
4519	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4520	glGetIntegerv(GL_STENCIL_VALUE_MASK, (GLint *)&mask);
4521	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4522	glGetIntegerv(GL_STENCIL_REF, &ref);
4523	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4524
4525	/* Update the changed value. */
4526	switch (pRenderState[i].state)
4527	{
4528	case SVGA3D_RS_STENCILFUNC: /* SVGA3dCmpFunc */
4529	func = vmsvgaCmpFunc2GL(pRenderState[i].uintValue);
4530	break;
4531
4532	case SVGA3D_RS_STENCILREF: /* uint32_t */
4533	ref = pRenderState[i].uintValue;
4534	break;
4535
4536	case SVGA3D_RS_STENCILMASK: /* uint32_t */
4537	mask = pRenderState[i].uintValue;
4538	break;
4539
4540	default:
4541	/* not possible; shut up gcc */
4542	AssertFailed();
4543	break;
4544	}
4545
4546	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE2SIDED].uintValue != 0)
4547	{
4548	pState->ext.glStencilFuncSeparate(GL_FRONT, func, ref, mask);
4549	}
4550	else
4551	{
4552	glStencilFunc(func, ref, mask);
4553	}
4554	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4555	break;
4556	}
4557
4558	case SVGA3D_RS_STENCILWRITEMASK: /* uint32_t */
4559	glStencilMask(pRenderState[i].uintValue);
4560	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4561	break;
4562
4563	case SVGA3D_RS_STENCILFAIL: /* SVGA3dStencilOp */
4564	case SVGA3D_RS_STENCILZFAIL: /* SVGA3dStencilOp */
4565	case SVGA3D_RS_STENCILPASS: /* SVGA3dStencilOp */
4566	{
4567	GLint sfail, dpfail, dppass;
4568	GLenum const stencilop = vmsvgaStencipOp2GL(pRenderState[i].uintValue);
4569
4570	glGetIntegerv(GL_STENCIL_FAIL, &sfail);
4571	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4572	glGetIntegerv(GL_STENCIL_PASS_DEPTH_FAIL, &dpfail);
4573	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4574	glGetIntegerv(GL_STENCIL_PASS_DEPTH_PASS, &dppass);
4575	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4576
4577	switch (pRenderState[i].state)
4578	{
4579	case SVGA3D_RS_STENCILFAIL: /* SVGA3dStencilOp */
4580	sfail = stencilop;
4581	break;
4582	case SVGA3D_RS_STENCILZFAIL: /* SVGA3dStencilOp */
4583	dpfail = stencilop;
4584	break;
4585	case SVGA3D_RS_STENCILPASS: /* SVGA3dStencilOp */
4586	dppass = stencilop;
4587	break;
4588	default:
4589	/* not possible; shut up gcc */
4590	AssertFailed();
4591	break;
4592	}
4593	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE2SIDED].uintValue != 0)
4594	{
4595	pState->ext.glStencilOpSeparate(GL_FRONT, sfail, dpfail, dppass);
4596	}
4597	else
4598	{
4599	glStencilOp(sfail, dpfail, dppass);
4600	}
4601	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4602	break;
4603	}
4604
4605	case SVGA3D_RS_CCWSTENCILFUNC: /* SVGA3dCmpFunc */
4606	{
4607	GLint ref;
4608	GLuint mask;
4609	GLint const func = vmsvgaCmpFunc2GL(pRenderState[i].uintValue);
4610
4611	/* GL_STENCIL_VALUE_MASK and GL_STENCIL_REF are the same for both GL_FRONT and GL_BACK. */
4612	glGetIntegerv(GL_STENCIL_VALUE_MASK, (GLint *)&mask);
4613	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4614	glGetIntegerv(GL_STENCIL_REF, &ref);
4615	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4616
4617	pState->ext.glStencilFuncSeparate(GL_BACK, func, ref, mask);
4618	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4619	break;
4620	}
4621
4622	case SVGA3D_RS_CCWSTENCILFAIL: /* SVGA3dStencilOp */
4623	case SVGA3D_RS_CCWSTENCILZFAIL: /* SVGA3dStencilOp */
4624	case SVGA3D_RS_CCWSTENCILPASS: /* SVGA3dStencilOp */
4625	{
4626	GLint sfail, dpfail, dppass;
4627	GLenum const stencilop = vmsvgaStencipOp2GL(pRenderState[i].uintValue);
4628
4629	glGetIntegerv(GL_STENCIL_BACK_FAIL, &sfail);
4630	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4631	glGetIntegerv(GL_STENCIL_BACK_PASS_DEPTH_FAIL, &dpfail);
4632	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4633	glGetIntegerv(GL_STENCIL_BACK_PASS_DEPTH_PASS, &dppass);
4634	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4635
4636	switch (pRenderState[i].state)
4637	{
4638	case SVGA3D_RS_CCWSTENCILFAIL: /* SVGA3dStencilOp */
4639	sfail = stencilop;
4640	break;
4641	case SVGA3D_RS_CCWSTENCILZFAIL: /* SVGA3dStencilOp */
4642	dpfail = stencilop;
4643	break;
4644	case SVGA3D_RS_CCWSTENCILPASS: /* SVGA3dStencilOp */
4645	dppass = stencilop;
4646	break;
4647	default:
4648	/* not possible; shut up gcc */
4649	AssertFailed();
4650	break;
4651	}
4652	pState->ext.glStencilOpSeparate(GL_BACK, sfail, dpfail, dppass);
4653	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4654	break;
4655	}
4656
4657	case SVGA3D_RS_ZBIAS: /* float */
4658	/** @todo unknown meaning; depth bias is not identical
4659	renderState = D3DRS_DEPTHBIAS;
4660	val = pRenderState[i].uintValue;
4661	*/
4662	Log(("vmsvga3dSetRenderState: WARNING unsupported SVGA3D_RS_ZBIAS\n"));
4663	break;
4664
4665	case SVGA3D_RS_DEPTHBIAS: /* float */
4666	{
4667	GLfloat factor;
4668
4669	/** @todo not sure if the d3d & ogl definitions are identical. */
4670
4671	/* Do not change the factor part. */
4672	glGetFloatv(GL_POLYGON_OFFSET_FACTOR, &factor);
4673	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4674
4675	glPolygonOffset(factor, pRenderState[i].floatValue);
4676	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4677	break;
4678	}
4679
4680	case SVGA3D_RS_SLOPESCALEDEPTHBIAS: /* float */
4681	{
4682	GLfloat units;
4683
4684	/** @todo not sure if the d3d & ogl definitions are identical. */
4685
4686	/* Do not change the factor part. */
4687	glGetFloatv(GL_POLYGON_OFFSET_UNITS, &units);
4688	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4689
4690	glPolygonOffset(pRenderState[i].floatValue, units);
4691	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4692	break;
4693	}
4694
4695	case SVGA3D_RS_COLORWRITEENABLE: /* SVGA3dColorMask */
4696	{
4697	GLboolean red, green, blue, alpha;
4698	SVGA3dColorMask mask;
4699
4700	mask.uintValue = pRenderState[i].uintValue;
4701
4702	red = mask.s.red;
4703	green = mask.s.green;
4704	blue = mask.s.blue;
4705	alpha = mask.s.alpha;
4706
4707	glColorMask(red, green, blue, alpha);
4708	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4709	break;
4710	}
4711
4712	case SVGA3D_RS_COLORWRITEENABLE1: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
4713	case SVGA3D_RS_COLORWRITEENABLE2: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
4714	case SVGA3D_RS_COLORWRITEENABLE3: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
4715	Log(("vmsvga3dSetRenderState: WARNING SVGA3D_RS_COLORWRITEENABLEx not supported!!\n"));
4716	break;
4717
4718	case SVGA3D_RS_SCISSORTESTENABLE: /* SVGA3dBool */
4719	enableCap = GL_SCISSOR_TEST;
4720	val = pRenderState[i].uintValue;
4721	break;
4722
4723	#if 0
4724	case SVGA3D_RS_DIFFUSEMATERIALSOURCE: /* SVGA3dVertexMaterial */
4725	AssertCompile(D3DMCS_COLOR2 == SVGA3D_VERTEXMATERIAL_SPECULAR);
4726	renderState = D3DRS_DIFFUSEMATERIALSOURCE;
4727	val = pRenderState[i].uintValue;
4728	break;
4729
4730	case SVGA3D_RS_SPECULARMATERIALSOURCE: /* SVGA3dVertexMaterial */
4731	renderState = D3DRS_SPECULARMATERIALSOURCE;
4732	val = pRenderState[i].uintValue;
4733	break;
4734
4735	case SVGA3D_RS_AMBIENTMATERIALSOURCE: /* SVGA3dVertexMaterial */
4736	renderState = D3DRS_AMBIENTMATERIALSOURCE;
4737	val = pRenderState[i].uintValue;
4738	break;
4739
4740	case SVGA3D_RS_EMISSIVEMATERIALSOURCE: /* SVGA3dVertexMaterial */
4741	renderState = D3DRS_EMISSIVEMATERIALSOURCE;
4742	val = pRenderState[i].uintValue;
4743	break;
4744	#endif
4745
4746	case SVGA3D_RS_WRAP3: /* SVGA3dWrapFlags */
4747	case SVGA3D_RS_WRAP4: /* SVGA3dWrapFlags */
4748	case SVGA3D_RS_WRAP5: /* SVGA3dWrapFlags */
4749	case SVGA3D_RS_WRAP6: /* SVGA3dWrapFlags */
4750	case SVGA3D_RS_WRAP7: /* SVGA3dWrapFlags */
4751	case SVGA3D_RS_WRAP8: /* SVGA3dWrapFlags */
4752	case SVGA3D_RS_WRAP9: /* SVGA3dWrapFlags */
4753	case SVGA3D_RS_WRAP10: /* SVGA3dWrapFlags */
4754	case SVGA3D_RS_WRAP11: /* SVGA3dWrapFlags */
4755	case SVGA3D_RS_WRAP12: /* SVGA3dWrapFlags */
4756	case SVGA3D_RS_WRAP13: /* SVGA3dWrapFlags */
4757	case SVGA3D_RS_WRAP14: /* SVGA3dWrapFlags */
4758	case SVGA3D_RS_WRAP15: /* SVGA3dWrapFlags */
4759	Log(("vmsvga3dSetRenderState: WARNING unsupported SVGA3D_WRAPx (x >= 3)\n"));
4760	break;
4761
4762	case SVGA3D_RS_LASTPIXEL: /* SVGA3dBool */
4763	case SVGA3D_RS_TWEENFACTOR: /* float */
4764	case SVGA3D_RS_INDEXEDVERTEXBLENDENABLE: /* SVGA3dBool */
4765	case SVGA3D_RS_VERTEXBLEND: /* SVGA3dVertexBlendFlags */
4766	Log(("vmsvga3dSetRenderState: WARNING not applicable!!\n"));
4767	break;
4768
4769	case SVGA3D_RS_MULTISAMPLEANTIALIAS: /* SVGA3dBool */
4770	enableCap = GL_MULTISAMPLE;
4771	val = pRenderState[i].uintValue;
4772	break;
4773
4774	case SVGA3D_RS_MULTISAMPLEMASK: /* uint32_t */
4775	case SVGA3D_RS_ANTIALIASEDLINEENABLE: /* SVGA3dBool */
4776	Log(("vmsvga3dSetRenderState: WARNING not applicable??!!\n"));
4777	break;
4778
4779	case SVGA3D_RS_COORDINATETYPE: /* SVGA3dCoordinateType */
4780	Assert(pRenderState[i].uintValue == SVGA3D_COORDINATE_LEFTHANDED);
4781	/** @todo setup a view matrix to scale the world space by -1 in the z-direction for right handed coordinates. */
4782	/*
4783	renderState = D3DRS_COORDINATETYPE;
4784	val = pRenderState[i].uintValue;
4785	*/
4786	break;
4787
4788	case SVGA3D_RS_FRONTWINDING: /* SVGA3dFrontWinding */
4789	Assert(pRenderState[i].uintValue == SVGA3D_FRONTWINDING_CW);
4790	/* Invert the selected mode because of y-inversion (?) */
4791	glFrontFace((pRenderState[i].uintValue != SVGA3D_FRONTWINDING_CW) ? GL_CW : GL_CCW);
4792	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4793	break;
4794
4795	case SVGA3D_RS_OUTPUTGAMMA: /* float */
4796	//AssertFailed();
4797	/*
4798	D3DRS_SRGBWRITEENABLE ??
4799	renderState = D3DRS_OUTPUTGAMMA;
4800	val = pRenderState[i].uintValue;
4801	*/
4802	break;
4803
4804	#if 0
4805
4806	case SVGA3D_RS_VERTEXMATERIALENABLE: /* SVGA3dBool */
4807	//AssertFailed();
4808	renderState = D3DRS_INDEXEDVERTEXBLENDENABLE; /* correct?? */
4809	val = pRenderState[i].uintValue;
4810	break;
4811
4812	case SVGA3D_RS_TEXTUREFACTOR: /* SVGA3dColor */
4813	renderState = D3DRS_TEXTUREFACTOR;
4814	val = pRenderState[i].uintValue;
4815	break;
4816
4817	case SVGA3D_RS_LOCALVIEWER: /* SVGA3dBool */
4818	renderState = D3DRS_LOCALVIEWER;
4819	val = pRenderState[i].uintValue;
4820	break;
4821
4822	case SVGA3D_RS_ZVISIBLE: /* SVGA3dBool */
4823	AssertFailed();
4824	/*
4825	renderState = D3DRS_ZVISIBLE;
4826	val = pRenderState[i].uintValue;
4827	*/
4828	break;
4829
4830	case SVGA3D_RS_CLIPPING: /* SVGA3dBool */
4831	renderState = D3DRS_CLIPPING;
4832	val = pRenderState[i].uintValue;
4833	break;
4834
4835	case SVGA3D_RS_WRAP0: /* SVGA3dWrapFlags */
4836	glTexParameter GL_TEXTURE_WRAP_S
4837	Assert(SVGA3D_WRAPCOORD_3 == D3DWRAPCOORD_3);
4838	renderState = D3DRS_WRAP0;
4839	val = pRenderState[i].uintValue;
4840	break;
4841
4842	case SVGA3D_RS_WRAP1: /* SVGA3dWrapFlags */
4843	glTexParameter GL_TEXTURE_WRAP_T
4844	renderState = D3DRS_WRAP1;
4845	val = pRenderState[i].uintValue;
4846	break;
4847
4848	case SVGA3D_RS_WRAP2: /* SVGA3dWrapFlags */
4849	glTexParameter GL_TEXTURE_WRAP_R
4850	renderState = D3DRS_WRAP2;
4851	val = pRenderState[i].uintValue;
4852	break;
4853
4854
4855	case SVGA3D_RS_SEPARATEALPHABLENDENABLE: /* SVGA3dBool */
4856	renderState = D3DRS_SEPARATEALPHABLENDENABLE;
4857	val = pRenderState[i].uintValue;
4858	break;
4859
4860
4861	case SVGA3D_RS_BLENDEQUATIONALPHA: /* SVGA3dBlendEquation */
4862	renderState = D3DRS_BLENDOPALPHA;
4863	val = pRenderState[i].uintValue;
4864	break;
4865
4866	case SVGA3D_RS_TRANSPARENCYANTIALIAS: /* SVGA3dTransparencyAntialiasType */
4867	AssertFailed();
4868	/*
4869	renderState = D3DRS_TRANSPARENCYANTIALIAS;
4870	val = pRenderState[i].uintValue;
4871	*/
4872	break;
4873
4874	#endif
4875	default:
4876	AssertFailed();
4877	break;
4878	}
4879
4880	if (enableCap != ~(GLenum)0)
4881	{
4882	if (val)
4883	glEnable(enableCap);
4884	else
4885	glDisable(enableCap);
4886	}
4887	}
4888
4889	return VINF_SUCCESS;
4890	}
4891
4892	int vmsvga3dSetRenderTarget(PVGASTATE pThis, uint32_t cid, SVGA3dRenderTargetType type, SVGA3dSurfaceImageId target)
4893	{
4894	PVMSVGA3DCONTEXT pContext;
4895	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
4896	PVMSVGA3DSURFACE pRenderTarget;
4897
4898	AssertReturn(pState, VERR_NO_MEMORY);
4899	AssertReturn(type < SVGA3D_RT_MAX, VERR_INVALID_PARAMETER);
4900
4901	Log(("vmsvga3dSetRenderTarget cid=%x type=%x surface id=%x\n", cid, type, target.sid));
4902
4903	if ( cid >= pState->cContexts
4904	\|\| pState->papContexts[cid]->id != cid)
4905	{
4906	Log(("vmsvga3dSetRenderTarget invalid context id!\n"));
4907	return VERR_INVALID_PARAMETER;
4908	}
4909	pContext = pState->papContexts[cid];
4910	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4911
4912	/* Save for vm state save/restore. */
4913	pContext->state.aRenderTargets[type] = target.sid;
4914
4915	if (target.sid == SVGA3D_INVALID_ID)
4916	{
4917	/* Disable render target. */
4918	switch (type)
4919	{
4920	case SVGA3D_RT_DEPTH:
4921	case SVGA3D_RT_STENCIL:
4922	pState->ext.glFramebufferRenderbuffer(GL_FRAMEBUFFER, (type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
4923	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4924	break;
4925
4926	case SVGA3D_RT_COLOR0:
4927	case SVGA3D_RT_COLOR1:
4928	case SVGA3D_RT_COLOR2:
4929	case SVGA3D_RT_COLOR3:
4930	case SVGA3D_RT_COLOR4:
4931	case SVGA3D_RT_COLOR5:
4932	case SVGA3D_RT_COLOR6:
4933	case SVGA3D_RT_COLOR7:
4934	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + type - SVGA3D_RT_COLOR0, 0, 0, 0);
4935	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4936	break;
4937
4938	default:
4939	AssertFailedReturn(VERR_INVALID_PARAMETER);
4940	}
4941	return VINF_SUCCESS;
4942	}
4943
4944	AssertReturn(target.sid < SVGA3D_MAX_SURFACE_IDS, VERR_INVALID_PARAMETER);
4945	AssertReturn(target.sid < pState->cSurfaces && pState->papSurfaces[target.sid]->id == target.sid, VERR_INVALID_PARAMETER);
4946	pRenderTarget = pState->papSurfaces[target.sid];
4947
4948	switch (type)
4949	{
4950	case SVGA3D_RT_DEPTH:
4951	case SVGA3D_RT_STENCIL:
4952	AssertReturn(target.mipmap == 0, VERR_INVALID_PARAMETER);
4953	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
4954	{
4955	Log(("vmsvga3dSetRenderTarget: create renderbuffer to be used as render target; surface id=%x type=%d format=%d\n", target.sid, pRenderTarget->surfaceFlags, pRenderTarget->internalFormatGL));
4956	pContext = &pState->SharedCtx;
4957	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4958
4959	pState->ext.glGenRenderbuffers(1, &pRenderTarget->oglId.renderbuffer);
4960	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4961
4962	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
4963	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4964
4965	pState->ext.glRenderbufferStorage(GL_RENDERBUFFER,
4966	pRenderTarget->internalFormatGL,
4967	pRenderTarget->pMipmapLevels[0].mipmapSize.width,
4968	pRenderTarget->pMipmapLevels[0].mipmapSize.height);
4969	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4970
4971	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, OPENGL_INVALID_ID);
4972	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4973
4974	pContext = pState->papContexts[cid];
4975	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4976	pRenderTarget->idWeakContextAssociation = cid;
4977	}
4978
4979	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
4980	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4981	Assert(!pRenderTarget->fDirty);
4982	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
4983
4984	pRenderTarget->surfaceFlags \|= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
4985
4986	pState->ext.glFramebufferRenderbuffer(GL_FRAMEBUFFER,
4987	(type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT,
4988	GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
4989	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4990	break;
4991
4992	case SVGA3D_RT_COLOR0:
4993	case SVGA3D_RT_COLOR1:
4994	case SVGA3D_RT_COLOR2:
4995	case SVGA3D_RT_COLOR3:
4996	case SVGA3D_RT_COLOR4:
4997	case SVGA3D_RT_COLOR5:
4998	case SVGA3D_RT_COLOR6:
4999	case SVGA3D_RT_COLOR7:
5000	{
5001	/* A texture surface can be used as a render target to fill it and later on used as a texture. */
5002	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5003	{
5004	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));
5005	int rc = vmsvga3dBackCreateTexture(pState, pContext, cid, pRenderTarget);
5006	AssertRCReturn(rc, rc);
5007	}
5008
5009	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5010	Assert(!pRenderTarget->fDirty);
5011
5012	pRenderTarget->surfaceFlags \|= SVGA3D_SURFACE_HINT_RENDERTARGET;
5013
5014	GLenum textarget;
5015	if (pRenderTarget->surfaceFlags & SVGA3D_SURFACE_CUBEMAP)
5016	textarget = vmsvga3dCubemapFaceFromIndex(target.face);
5017	else
5018	textarget = GL_TEXTURE_2D;
5019	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + type - SVGA3D_RT_COLOR0,
5020	textarget, pRenderTarget->oglId.texture, target.mipmap);
5021	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5022
5023	#ifdef DEBUG
5024	GLenum status = pState->ext.glCheckFramebufferStatus(GL_FRAMEBUFFER);
5025	if (status != GL_FRAMEBUFFER_COMPLETE)
5026	Log(("vmsvga3dSetRenderTarget: WARNING: glCheckFramebufferStatus returned %x\n", status));
5027	#endif
5028	/** @todo use glDrawBuffers too? */
5029	break;
5030	}
5031
5032	default:
5033	AssertFailedReturn(VERR_INVALID_PARAMETER);
5034	}
5035
5036	return VINF_SUCCESS;
5037	}
5038
5039	#if 0
5040	/**
5041	* Convert SVGA texture combiner value to its D3D equivalent
5042	*/
5043	static DWORD vmsvga3dTextureCombiner2D3D(uint32_t value)
5044	{
5045	switch (value)
5046	{
5047	case SVGA3D_TC_DISABLE:
5048	return D3DTOP_DISABLE;
5049	case SVGA3D_TC_SELECTARG1:
5050	return D3DTOP_SELECTARG1;
5051	case SVGA3D_TC_SELECTARG2:
5052	return D3DTOP_SELECTARG2;
5053	case SVGA3D_TC_MODULATE:
5054	return D3DTOP_MODULATE;
5055	case SVGA3D_TC_ADD:
5056	return D3DTOP_ADD;
5057	case SVGA3D_TC_ADDSIGNED:
5058	return D3DTOP_ADDSIGNED;
5059	case SVGA3D_TC_SUBTRACT:
5060	return D3DTOP_SUBTRACT;
5061	case SVGA3D_TC_BLENDTEXTUREALPHA:
5062	return D3DTOP_BLENDTEXTUREALPHA;
5063	case SVGA3D_TC_BLENDDIFFUSEALPHA:
5064	return D3DTOP_BLENDDIFFUSEALPHA;
5065	case SVGA3D_TC_BLENDCURRENTALPHA:
5066	return D3DTOP_BLENDCURRENTALPHA;
5067	case SVGA3D_TC_BLENDFACTORALPHA:
5068	return D3DTOP_BLENDFACTORALPHA;
5069	case SVGA3D_TC_MODULATE2X:
5070	return D3DTOP_MODULATE2X;
5071	case SVGA3D_TC_MODULATE4X:
5072	return D3DTOP_MODULATE4X;
5073	case SVGA3D_TC_DSDT:
5074	AssertFailed(); /** @todo ??? */
5075	return D3DTOP_DISABLE;
5076	case SVGA3D_TC_DOTPRODUCT3:
5077	return D3DTOP_DOTPRODUCT3;
5078	case SVGA3D_TC_BLENDTEXTUREALPHAPM:
5079	return D3DTOP_BLENDTEXTUREALPHAPM;
5080	case SVGA3D_TC_ADDSIGNED2X:
5081	return D3DTOP_ADDSIGNED2X;
5082	case SVGA3D_TC_ADDSMOOTH:
5083	return D3DTOP_ADDSMOOTH;
5084	case SVGA3D_TC_PREMODULATE:
5085	return D3DTOP_PREMODULATE;
5086	case SVGA3D_TC_MODULATEALPHA_ADDCOLOR:
5087	return D3DTOP_MODULATEALPHA_ADDCOLOR;
5088	case SVGA3D_TC_MODULATECOLOR_ADDALPHA:
5089	return D3DTOP_MODULATECOLOR_ADDALPHA;
5090	case SVGA3D_TC_MODULATEINVALPHA_ADDCOLOR:
5091	return D3DTOP_MODULATEINVALPHA_ADDCOLOR;
5092	case SVGA3D_TC_MODULATEINVCOLOR_ADDALPHA:
5093	return D3DTOP_MODULATEINVCOLOR_ADDALPHA;
5094	case SVGA3D_TC_BUMPENVMAPLUMINANCE:
5095	return D3DTOP_BUMPENVMAPLUMINANCE;
5096	case SVGA3D_TC_MULTIPLYADD:
5097	return D3DTOP_MULTIPLYADD;
5098	case SVGA3D_TC_LERP:
5099	return D3DTOP_LERP;
5100	default:
5101	AssertFailed();
5102	return D3DTOP_DISABLE;
5103	}
5104	}
5105
5106	/**
5107	* Convert SVGA texture arg data value to its D3D equivalent
5108	*/
5109	static DWORD vmsvga3dTextureArgData2D3D(uint32_t value)
5110	{
5111	switch (value)
5112	{
5113	case SVGA3D_TA_CONSTANT:
5114	return D3DTA_CONSTANT;
5115	case SVGA3D_TA_PREVIOUS:
5116	return D3DTA_CURRENT; /* current = previous */
5117	case SVGA3D_TA_DIFFUSE:
5118	return D3DTA_DIFFUSE;
5119	case SVGA3D_TA_TEXTURE:
5120	return D3DTA_TEXTURE;
5121	case SVGA3D_TA_SPECULAR:
5122	return D3DTA_SPECULAR;
5123	default:
5124	AssertFailed();
5125	return 0;
5126	}
5127	}
5128
5129	/**
5130	* Convert SVGA texture transform flag value to its D3D equivalent
5131	*/
5132	static DWORD vmsvga3dTextTransformFlags2D3D(uint32_t value)
5133	{
5134	switch (value)
5135	{
5136	case SVGA3D_TEX_TRANSFORM_OFF:
5137	return D3DTTFF_DISABLE;
5138	case SVGA3D_TEX_TRANSFORM_S:
5139	return D3DTTFF_COUNT1; /** @todo correct? */
5140	case SVGA3D_TEX_TRANSFORM_T:
5141	return D3DTTFF_COUNT2; /** @todo correct? */
5142	case SVGA3D_TEX_TRANSFORM_R:
5143	return D3DTTFF_COUNT3; /** @todo correct? */
5144	case SVGA3D_TEX_TRANSFORM_Q:
5145	return D3DTTFF_COUNT4; /** @todo correct? */
5146	case SVGA3D_TEX_PROJECTED:
5147	return D3DTTFF_PROJECTED;
5148	default:
5149	AssertFailed();
5150	return 0;
5151	}
5152	}
5153	#endif
5154
5155	static GLenum vmsvga3dTextureAddress2OGL(SVGA3dTextureAddress value)
5156	{
5157	switch (value)
5158	{
5159	case SVGA3D_TEX_ADDRESS_WRAP:
5160	return GL_REPEAT;
5161	case SVGA3D_TEX_ADDRESS_MIRROR:
5162	return GL_MIRRORED_REPEAT;
5163	case SVGA3D_TEX_ADDRESS_CLAMP:
5164	return GL_CLAMP_TO_EDGE;
5165	case SVGA3D_TEX_ADDRESS_BORDER:
5166	return GL_CLAMP_TO_BORDER;
5167	case SVGA3D_TEX_ADDRESS_MIRRORONCE:
5168	AssertFailed();
5169	return GL_CLAMP_TO_EDGE_SGIS; /** @todo correct? */
5170
5171	case SVGA3D_TEX_ADDRESS_EDGE:
5172	case SVGA3D_TEX_ADDRESS_INVALID:
5173	default:
5174	AssertFailed();
5175	return GL_REPEAT; /* default */
5176	}
5177	}
5178
5179	static GLenum vmsvga3dTextureFilter2OGL(SVGA3dTextureFilter value)
5180	{
5181	switch (value)
5182	{
5183	case SVGA3D_TEX_FILTER_NONE:
5184	case SVGA3D_TEX_FILTER_LINEAR:
5185	return GL_LINEAR;
5186	case SVGA3D_TEX_FILTER_NEAREST:
5187	return GL_NEAREST;
5188	case SVGA3D_TEX_FILTER_ANISOTROPIC:
5189	/** @todo */
5190	case SVGA3D_TEX_FILTER_FLATCUBIC: // Deprecated, not implemented
5191	case SVGA3D_TEX_FILTER_GAUSSIANCUBIC: // Deprecated, not implemented
5192	case SVGA3D_TEX_FILTER_PYRAMIDALQUAD: // Not currently implemented
5193	case SVGA3D_TEX_FILTER_GAUSSIANQUAD: // Not currently implemented
5194	default:
5195	AssertFailed();
5196	return GL_LINEAR; /* default */
5197	}
5198	}
5199
5200	uint32_t vmsvga3dSVGA3dColor2RGBA(SVGA3dColor value)
5201	{
5202	/* flip the red and blue bytes */
5203	uint8_t blue = value & 0xff;
5204	uint8_t red = (value >> 16) & 0xff;
5205	return (value & 0xff00ff00) \| red \| (blue << 16);
5206	}
5207
5208	int vmsvga3dSetTextureState(PVGASTATE pThis, uint32_t cid, uint32_t cTextureStates, SVGA3dTextureState *pTextureState)
5209	{
5210	GLenum val = ~(GLenum)0; /* Shut up MSC. */
5211	GLenum currentStage = ~(GLenum)0;
5212	PVMSVGA3DCONTEXT pContext;
5213	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
5214	AssertReturn(pState, VERR_NO_MEMORY);
5215
5216	Log(("vmsvga3dSetTextureState %x cTextureState=%d\n", cid, cTextureStates));
5217
5218	if ( cid >= pState->cContexts
5219	\|\| pState->papContexts[cid]->id != cid)
5220	{
5221	Log(("vmsvga3dSetTextureState invalid context id!\n"));
5222	return VERR_INVALID_PARAMETER;
5223	}
5224	pContext = pState->papContexts[cid];
5225	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5226
5227	/* Which texture is active for the current stage. Needed to use right OpenGL target when setting parameters. */
5228	PVMSVGA3DSURFACE pCurrentTextureSurface = NULL;
5229
5230	for (uint32_t i = 0; i < cTextureStates; ++i)
5231	{
5232	GLenum textureType = ~(GLenum)0;
5233	#if 0
5234	GLenum samplerType = ~(GLenum)0;
5235	#endif
5236
5237	LogFunc(("cid=%x stage=%d type=%s (%x) val=%x\n",
5238	cid, pTextureState[i].stage, vmsvga3dTextureStateToString(pTextureState[i].name), pTextureState[i].name, pTextureState[i].value));
5239
5240	/* Record the texture state for vm state saving. */
5241	if ( pTextureState[i].stage < RT_ELEMENTS(pContext->state.aTextureStates)
5242	&& pTextureState[i].name < RT_ELEMENTS(pContext->state.aTextureStates[0]))
5243	{
5244	pContext->state.aTextureStates[pTextureState[i].stage][pTextureState[i].name] = pTextureState[i];
5245	}
5246
5247	/* Activate the right texture unit for subsequent texture state changes. */
5248	if (pTextureState[i].stage != currentStage \|\| i == 0)
5249	{
5250	/** @todo Is this the appropriate limit for all kinds of textures? It is the
5251	* size of aSidActiveTextures and for binding/unbinding we cannot exceed it. */
5252	if (pTextureState[i].stage < RT_ELEMENTS(pContext->state.aTextureStates))
5253	{
5254	pState->ext.glActiveTexture(GL_TEXTURE0 + pTextureState[i].stage);
5255	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5256	currentStage = pTextureState[i].stage;
5257	}
5258	else
5259	{
5260	AssertMsgFailed(("pTextureState[%d].stage=%#x name=%#x\n", i, pTextureState[i].stage, pTextureState[i].name));
5261	continue;
5262	}
5263
5264	if (pContext->aSidActiveTextures[currentStage] != SVGA3D_INVALID_ID)
5265	{
5266	int rc = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[currentStage], &pCurrentTextureSurface);
5267	AssertRCReturn(rc, rc);
5268	}
5269	else
5270	pCurrentTextureSurface = NULL; /* Make sure that no stale pointer is used. */
5271	}
5272
5273	switch (pTextureState[i].name)
5274	{
5275	case SVGA3D_TS_BUMPENVMAT00: /* float */
5276	case SVGA3D_TS_BUMPENVMAT01: /* float */
5277	case SVGA3D_TS_BUMPENVMAT10: /* float */
5278	case SVGA3D_TS_BUMPENVMAT11: /* float */
5279	case SVGA3D_TS_BUMPENVLSCALE: /* float */
5280	case SVGA3D_TS_BUMPENVLOFFSET: /* float */
5281	Log(("vmsvga3dSetTextureState: bump mapping texture options not supported!!\n"));
5282	break;
5283
5284	case SVGA3D_TS_COLOROP: /* SVGA3dTextureCombiner */
5285	case SVGA3D_TS_COLORARG0: /* SVGA3dTextureArgData */
5286	case SVGA3D_TS_COLORARG1: /* SVGA3dTextureArgData */
5287	case SVGA3D_TS_COLORARG2: /* SVGA3dTextureArgData */
5288	case SVGA3D_TS_ALPHAOP: /* SVGA3dTextureCombiner */
5289	case SVGA3D_TS_ALPHAARG0: /* SVGA3dTextureArgData */
5290	case SVGA3D_TS_ALPHAARG1: /* SVGA3dTextureArgData */
5291	case SVGA3D_TS_ALPHAARG2: /* SVGA3dTextureArgData */
5292	/** @todo not used by MesaGL */
5293	Log(("vmsvga3dSetTextureState: colorop/alphaop not yet supported!!\n"));
5294	break;
5295	#if 0
5296
5297	case SVGA3D_TS_TEXCOORDINDEX: /* uint32_t */
5298	textureType = D3DTSS_TEXCOORDINDEX;
5299	val = pTextureState[i].value;
5300	break;
5301
5302	case SVGA3D_TS_TEXTURETRANSFORMFLAGS: /* SVGA3dTexTransformFlags */
5303	textureType = D3DTSS_TEXTURETRANSFORMFLAGS;
5304	val = vmsvga3dTextTransformFlags2D3D(pTextureState[i].value);
5305	break;
5306	#endif
5307
5308	case SVGA3D_TS_BIND_TEXTURE: /* SVGA3dSurfaceId */
5309	{
5310	uint32_t const sid = pTextureState[i].value;
5311
5312	Log(("SVGA3D_TS_BIND_TEXTURE: stage %d, texture sid=%x replacing sid=%x\n",
5313	currentStage, sid, pContext->aSidActiveTextures[currentStage]));
5314
5315	/* Only is texture actually changed. */ /// @todo needs testing.
5316	if (pContext->aSidActiveTextures[currentStage] != sid)
5317	{
5318	if (pCurrentTextureSurface)
5319	{
5320	/* Unselect the currently associated texture. */
5321	glBindTexture(pCurrentTextureSurface->targetGL, 0);
5322	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5323
5324	/* Necessary for the fixed pipeline. */
5325	glDisable(pCurrentTextureSurface->targetGL);
5326	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5327
5328	pCurrentTextureSurface = NULL;
5329	}
5330
5331	if (sid == SVGA3D_INVALID_ID)
5332	{
5333	Assert(pCurrentTextureSurface == NULL);
5334	}
5335	else
5336	{
5337	PVMSVGA3DSURFACE pSurface;
5338	int rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
5339	AssertRCReturn(rc, rc);
5340
5341	Log(("SVGA3D_TS_BIND_TEXTURE: stage %d, texture sid=%x (%d,%d) replacing sid=%x\n",
5342	currentStage, sid, pSurface->pMipmapLevels[0].mipmapSize.width,
5343	pSurface->pMipmapLevels[0].mipmapSize.height, pContext->aSidActiveTextures[currentStage]));
5344
5345	if (pSurface->oglId.texture == OPENGL_INVALID_ID)
5346	{
5347	Log(("CreateTexture (%d,%d) levels=%d\n",
5348	pSurface->pMipmapLevels[0].mipmapSize.width, pSurface->pMipmapLevels[0].mipmapSize.height, pSurface->faces[0].numMipLevels));
5349	rc = vmsvga3dBackCreateTexture(pState, pContext, cid, pSurface);
5350	AssertRCReturn(rc, rc);
5351	}
5352
5353	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
5354	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5355
5356	/* Necessary for the fixed pipeline. */
5357	glEnable(pSurface->targetGL);
5358	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5359
5360	/* Remember the currently active texture. */
5361	pCurrentTextureSurface = pSurface;
5362
5363	/* Recreate the texture state as glBindTexture resets them all (sigh). */
5364	for (uint32_t iStage = 0; iStage < RT_ELEMENTS(pContext->state.aTextureStates); iStage++)
5365	{
5366	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aTextureStates[0]); j++)
5367	{
5368	SVGA3dTextureState *pTextureStateIter = &pContext->state.aTextureStates[iStage][j];
5369
5370	if ( pTextureStateIter->name != SVGA3D_TS_INVALID
5371	&& pTextureStateIter->name != SVGA3D_TS_BIND_TEXTURE)
5372	vmsvga3dSetTextureState(pThis, pContext->id, 1, pTextureStateIter);
5373	}
5374	}
5375	}
5376
5377	pContext->aSidActiveTextures[currentStage] = sid;
5378	}
5379
5380	/* Finished; continue with the next one. */
5381	continue;
5382	}
5383
5384	case SVGA3D_TS_ADDRESSW: /* SVGA3dTextureAddress */
5385	textureType = GL_TEXTURE_WRAP_R; /* R = W */
5386	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5387	break;
5388
5389	case SVGA3D_TS_ADDRESSU: /* SVGA3dTextureAddress */
5390	textureType = GL_TEXTURE_WRAP_S; /* S = U */
5391	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5392	break;
5393
5394	case SVGA3D_TS_ADDRESSV: /* SVGA3dTextureAddress */
5395	textureType = GL_TEXTURE_WRAP_T; /* T = V */
5396	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5397	break;
5398
5399	case SVGA3D_TS_MIPFILTER: /* SVGA3dTextureFilter */
5400	case SVGA3D_TS_MINFILTER: /* SVGA3dTextureFilter */
5401	{
5402	uint32_t mipFilter = pContext->state.aTextureStates[currentStage][SVGA3D_TS_MIPFILTER].value;
5403	uint32_t minFilter = pContext->state.aTextureStates[currentStage][SVGA3D_TS_MINFILTER].value;
5404
5405	/* If SVGA3D_TS_MIPFILTER is set to NONE, then use SVGA3D_TS_MIPFILTER, otherwise SVGA3D_TS_MIPFILTER enables mipmap minification. */
5406	textureType = GL_TEXTURE_MIN_FILTER;
5407	if (mipFilter != SVGA3D_TEX_FILTER_NONE)
5408	{
5409	if (minFilter == SVGA3D_TEX_FILTER_NEAREST)
5410	{
5411	if (mipFilter == SVGA3D_TEX_FILTER_LINEAR)
5412	val = GL_NEAREST_MIPMAP_LINEAR;
5413	else
5414	val = GL_NEAREST_MIPMAP_NEAREST;
5415	}
5416	else
5417	{
5418	if (mipFilter == SVGA3D_TEX_FILTER_LINEAR)
5419	val = GL_LINEAR_MIPMAP_LINEAR;
5420	else
5421	val = GL_LINEAR_MIPMAP_NEAREST;
5422	}
5423	}
5424	else
5425	val = vmsvga3dTextureFilter2OGL((SVGA3dTextureFilter)minFilter);
5426	break;
5427	}
5428
5429	case SVGA3D_TS_MAGFILTER: /* SVGA3dTextureFilter */
5430	textureType = GL_TEXTURE_MAG_FILTER;
5431	val = vmsvga3dTextureFilter2OGL((SVGA3dTextureFilter)pTextureState[i].value);
5432	Assert(val == GL_NEAREST \|\| val == GL_LINEAR);
5433	break;
5434
5435	case SVGA3D_TS_BORDERCOLOR: /* SVGA3dColor */
5436	{
5437	GLfloat color[4]; /* red, green, blue, alpha */
5438	vmsvgaColor2GLFloatArray(pTextureState[i].value, &color[0], &color[1], &color[2], &color[3]);
5439
5440	GLenum targetGL;
5441	if (pCurrentTextureSurface)
5442	targetGL = pCurrentTextureSurface->targetGL;
5443	else
5444	{
5445	/* No texture bound, assume 2D. */
5446	targetGL = GL_TEXTURE_2D;
5447	}
5448
5449	glTexParameterfv(targetGL, GL_TEXTURE_BORDER_COLOR, color); /* Identical; default 0.0 identical too */
5450	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5451	break;
5452	}
5453
5454	case SVGA3D_TS_TEXTURE_LOD_BIAS: /* float */
5455	{
5456	GLenum targetGL;
5457	if (pCurrentTextureSurface)
5458	targetGL = pCurrentTextureSurface->targetGL;
5459	else
5460	{
5461	/* No texture bound, assume 2D. */
5462	targetGL = GL_TEXTURE_2D;
5463	}
5464
5465	glTexParameterf(targetGL, GL_TEXTURE_LOD_BIAS, pTextureState[i].floatValue); /* Identical; default 0.0 identical too */
5466	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5467	break;
5468	}
5469
5470	case SVGA3D_TS_TEXTURE_MIPMAP_LEVEL: /* uint32_t */
5471	textureType = GL_TEXTURE_BASE_LEVEL;
5472	val = pTextureState[i].value;
5473	break;
5474
5475	#if 0
5476	case SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL: /* uint32_t */
5477	samplerType = D3DSAMP_MAXANISOTROPY;
5478	val = pTextureState[i].value; /* Identical?? */
5479	break;
5480
5481	case SVGA3D_TS_GAMMA: /* float */
5482	samplerType = D3DSAMP_SRGBTEXTURE;
5483	/* Boolean in D3D */
5484	if (pTextureState[i].floatValue == 1.0f)
5485	val = FALSE;
5486	else
5487	val = TRUE;
5488	break;
5489	#endif
5490	/* Internal commands, that don't map directly to the SetTextureStageState API. */
5491	case SVGA3D_TS_TEXCOORDGEN: /* SVGA3dTextureCoordGen */
5492	AssertFailed();
5493	break;
5494
5495	default:
5496	//AssertFailed();
5497	break;
5498	}
5499
5500	if (textureType != ~(GLenum)0)
5501	{
5502	GLenum targetGL;
5503	if (pCurrentTextureSurface)
5504	targetGL = pCurrentTextureSurface->targetGL;
5505	else
5506	{
5507	/* No texture bound, assume 2D. */
5508	targetGL = GL_TEXTURE_2D;
5509	}
5510
5511	glTexParameteri(targetGL, textureType, val);
5512	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5513	}
5514	}
5515
5516	return VINF_SUCCESS;
5517	}
5518
5519	int vmsvga3dSetMaterial(PVGASTATE pThis, uint32_t cid, SVGA3dFace face, SVGA3dMaterial *pMaterial)
5520	{
5521	PVMSVGA3DCONTEXT pContext;
5522	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
5523	AssertReturn(pState, VERR_NO_MEMORY);
5524	GLenum oglFace;
5525
5526	Log(("vmsvga3dSetMaterial cid=%x face %d\n", cid, face));
5527
5528	if ( cid >= pState->cContexts
5529	\|\| pState->papContexts[cid]->id != cid)
5530	{
5531	Log(("vmsvga3dSetMaterial invalid context id!\n"));
5532	return VERR_INVALID_PARAMETER;
5533	}
5534	pContext = pState->papContexts[cid];
5535	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5536
5537	switch (face)
5538	{
5539	case SVGA3D_FACE_NONE:
5540	case SVGA3D_FACE_FRONT:
5541	oglFace = GL_FRONT;
5542	break;
5543
5544	case SVGA3D_FACE_BACK:
5545	oglFace = GL_BACK;
5546	break;
5547
5548	case SVGA3D_FACE_FRONT_BACK:
5549	oglFace = GL_FRONT_AND_BACK;
5550	break;
5551
5552	default:
5553	AssertFailedReturn(VERR_INVALID_PARAMETER);
5554	}
5555
5556	/* Save for vm state save/restore. */
5557	pContext->state.aMaterial[face].fValid = true;
5558	pContext->state.aMaterial[face].material = *pMaterial;
5559	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_MATERIAL;
5560
5561	glMaterialfv(oglFace, GL_DIFFUSE, pMaterial->diffuse);
5562	glMaterialfv(oglFace, GL_AMBIENT, pMaterial->ambient);
5563	glMaterialfv(oglFace, GL_SPECULAR, pMaterial->specular);
5564	glMaterialfv(oglFace, GL_EMISSION, pMaterial->emissive);
5565	glMaterialfv(oglFace, GL_SHININESS, &pMaterial->shininess);
5566	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5567
5568	return VINF_SUCCESS;
5569	}
5570
5571	/** @todo Move into separate library as we are using logic from Wine here. */
5572	int vmsvga3dSetLightData(PVGASTATE pThis, uint32_t cid, uint32_t index, SVGA3dLightData *pData)
5573	{
5574	PVMSVGA3DCONTEXT pContext;
5575	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
5576	AssertReturn(pState, VERR_NO_MEMORY);
5577	float QuadAttenuation;
5578
5579	Log(("vmsvga3dSetLightData cid=%x index=%d type=%d\n", cid, index, pData->type));
5580
5581	if ( cid >= pState->cContexts
5582	\|\| pState->papContexts[cid]->id != cid)
5583	{
5584	Log(("vmsvga3dSetLightData invalid context id!\n"));
5585	return VERR_INVALID_PARAMETER;
5586	}
5587	pContext = pState->papContexts[cid];
5588	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5589
5590	/* Store for vm state save/restore */
5591	if (index < SVGA3D_MAX_LIGHTS)
5592	{
5593	pContext->state.aLightData[index].fValidData = true;
5594	pContext->state.aLightData[index].data = *pData;
5595	}
5596	else
5597	AssertFailed();
5598
5599	if ( pData->attenuation0 < 0.0f
5600	\|\| pData->attenuation1 < 0.0f
5601	\|\| pData->attenuation2 < 0.0f)
5602	{
5603	Log(("vmsvga3dSetLightData: invalid negative attenuation values!!\n"));
5604	return VINF_SUCCESS; /* ignore; could crash the GL driver */
5605	}
5606
5607	/* Light settings are affected by the model view in OpenGL, the View transform in direct3d */
5608	glMatrixMode(GL_MODELVIEW);
5609	glPushMatrix();
5610	glLoadMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
5611
5612	glLightfv(GL_LIGHT0 + index, GL_DIFFUSE, pData->diffuse);
5613	glLightfv(GL_LIGHT0 + index, GL_SPECULAR, pData->specular);
5614	glLightfv(GL_LIGHT0 + index, GL_AMBIENT, pData->ambient);
5615
5616	if (pData->range * pData->range >= FLT_MIN)
5617	QuadAttenuation = 1.4f / (pData->range * pData->range);
5618	else
5619	QuadAttenuation = 0.0f;
5620
5621	switch (pData->type)
5622	{
5623	case SVGA3D_LIGHTTYPE_POINT:
5624	{
5625	GLfloat position[4];
5626
5627	position[0] = pData->position[0];
5628	position[1] = pData->position[1];
5629	position[2] = pData->position[2];
5630	position[3] = 1.0f;
5631
5632	glLightfv(GL_LIGHT0 + index, GL_POSITION, position);
5633	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5634
5635	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, 180.0f);
5636	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5637
5638	/* Attenuation - Are these right? guessing... */
5639	glLightf(GL_LIGHT0 + index, GL_CONSTANT_ATTENUATION, pData->attenuation0);
5640	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5641
5642	glLightf(GL_LIGHT0 + index, GL_LINEAR_ATTENUATION, pData->attenuation1);
5643	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5644
5645	glLightf(GL_LIGHT0 + index, GL_QUADRATIC_ATTENUATION, (QuadAttenuation < pData->attenuation2) ? pData->attenuation2 : QuadAttenuation);
5646	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5647
5648	/** @todo range */
5649	break;
5650	}
5651
5652	case SVGA3D_LIGHTTYPE_SPOT1:
5653	{
5654	GLfloat exponent;
5655	GLfloat position[4];
5656	const GLfloat pi = 4.0f * atanf(1.0f);
5657
5658	position[0] = pData->position[0];
5659	position[1] = pData->position[1];
5660	position[2] = pData->position[2];
5661	position[3] = 1.0f;
5662
5663	glLightfv(GL_LIGHT0 + index, GL_POSITION, position);
5664	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5665
5666	position[0] = pData->direction[0];
5667	position[1] = pData->direction[1];
5668	position[2] = pData->direction[2];
5669	position[3] = 1.0f;
5670
5671	glLightfv(GL_LIGHT0 + index, GL_SPOT_DIRECTION, position);
5672	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5673
5674	/*
5675	* opengl-ish and d3d-ish spot lights use too different models for the
5676	* light "intensity" as a function of the angle towards the main light direction,
5677	* so we only can approximate very roughly.
5678	* however spot lights are rather rarely used in games (if ever used at all).
5679	* furthermore if still used, probably nobody pays attention to such details.
5680	*/
5681	if (pData->falloff == 0)
5682	{
5683	/* Falloff = 0 is easy, because d3d's and opengl's spot light equations have the
5684	* falloff resp. exponent parameter as an exponent, so the spot light lighting
5685	* will always be 1.0 for both of them, and we don't have to care for the
5686	* rest of the rather complex calculation
5687	*/
5688	exponent = 0.0f;
5689	}
5690	else
5691	{
5692	float rho = pData->theta + (pData->phi - pData->theta) / (2 * pData->falloff);
5693	if (rho < 0.0001f)
5694	rho = 0.0001f;
5695	exponent = -0.3f/log(cos(rho/2));
5696	}
5697	if (exponent > 128.0f)
5698	exponent = 128.0f;
5699
5700	glLightf(GL_LIGHT0 + index, GL_SPOT_EXPONENT, exponent);
5701	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5702
5703	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, pData->phi * 90.0 / pi);
5704	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5705
5706	/* Attenuation - Are these right? guessing... */
5707	glLightf(GL_LIGHT0 + index, GL_CONSTANT_ATTENUATION, pData->attenuation0);
5708	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5709
5710	glLightf(GL_LIGHT0 + index, GL_LINEAR_ATTENUATION, pData->attenuation1);
5711	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5712
5713	glLightf(GL_LIGHT0 + index, GL_QUADRATIC_ATTENUATION, (QuadAttenuation < pData->attenuation2) ? pData->attenuation2 : QuadAttenuation);
5714	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5715
5716	/** @todo range */
5717	break;
5718	}
5719
5720	case SVGA3D_LIGHTTYPE_DIRECTIONAL:
5721	{
5722	GLfloat position[4];
5723
5724	position[0] = -pData->direction[0];
5725	position[1] = -pData->direction[1];
5726	position[2] = -pData->direction[2];
5727	position[3] = 0.0f;
5728
5729	glLightfv(GL_LIGHT0 + index, GL_POSITION, position); /* Note gl uses w position of 0 for direction! */
5730	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5731
5732	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, 180.0f);
5733	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5734
5735	glLightf(GL_LIGHT0 + index, GL_SPOT_EXPONENT, 0.0f);
5736	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5737	break;
5738	}
5739
5740	case SVGA3D_LIGHTTYPE_SPOT2:
5741	default:
5742	Log(("Unsupported light type!!\n"));
5743	return VERR_INVALID_PARAMETER;
5744	}
5745
5746	/* Restore the modelview matrix */
5747	glPopMatrix();
5748
5749	return VINF_SUCCESS;
5750	}
5751
5752	int vmsvga3dSetLightEnabled(PVGASTATE pThis, uint32_t cid, uint32_t index, uint32_t enabled)
5753	{
5754	PVMSVGA3DCONTEXT pContext;
5755	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
5756	AssertReturn(pState, VERR_NO_MEMORY);
5757
5758	Log(("vmsvga3dSetLightEnabled cid=%x %d -> %d\n", cid, index, enabled));
5759
5760	if ( cid >= pState->cContexts
5761	\|\| pState->papContexts[cid]->id != cid)
5762	{
5763	Log(("vmsvga3dSetLightEnabled invalid context id!\n"));
5764	return VERR_INVALID_PARAMETER;
5765	}
5766	pContext = pState->papContexts[cid];
5767	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5768
5769	/* Store for vm state save/restore */
5770	if (index < SVGA3D_MAX_LIGHTS)
5771	pContext->state.aLightData[index].fEnabled = !!enabled;
5772	else
5773	AssertFailed();
5774
5775	if (enabled)
5776	{
5777	/* Load the default settings if none have been set yet. */
5778	if (!pContext->state.aLightData[index].fValidData)
5779	vmsvga3dSetLightData(pThis, cid, index, (SVGA3dLightData *)&vmsvga3d_default_light);
5780	glEnable(GL_LIGHT0 + index);
5781	}
5782	else
5783	glDisable(GL_LIGHT0 + index);
5784
5785	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5786	return VINF_SUCCESS;
5787	}
5788
5789	int vmsvga3dSetViewPort(PVGASTATE pThis, uint32_t cid, SVGA3dRect *pRect)
5790	{
5791	PVMSVGA3DCONTEXT pContext;
5792	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
5793	AssertReturn(pState, VERR_NO_MEMORY);
5794
5795	Log(("vmsvga3dSetViewPort cid=%x (%d,%d)(%d,%d)\n", cid, pRect->x, pRect->y, pRect->w, pRect->h));
5796
5797	if ( cid >= pState->cContexts
5798	\|\| pState->papContexts[cid]->id != cid)
5799	{
5800	Log(("vmsvga3dSetViewPort invalid context id!\n"));
5801	return VERR_INVALID_PARAMETER;
5802	}
5803	pContext = pState->papContexts[cid];
5804	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5805
5806	/* Save for vm state save/restore. */
5807	pContext->state.RectViewPort = *pRect;
5808	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_VIEWPORT;
5809
5810	/** @todo y-inversion for partial viewport coordinates? */
5811	glViewport(pRect->x, pRect->y, pRect->w, pRect->h);
5812	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5813
5814	/* Reset the projection matrix as that relies on the viewport setting. */
5815	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].fValid == true)
5816	{
5817	vmsvga3dSetTransform(pThis, cid, SVGA3D_TRANSFORM_PROJECTION, pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].matrix);
5818	}
5819	else
5820	{
5821	float matrix[16];
5822
5823	/* identity matrix if no matrix set. */
5824	memset(matrix, 0, sizeof(matrix));
5825	matrix[0] = 1.0;
5826	matrix[5] = 1.0;
5827	matrix[10] = 1.0;
5828	matrix[15] = 1.0;
5829	vmsvga3dSetTransform(pThis, cid, SVGA3D_TRANSFORM_PROJECTION, matrix);
5830	}
5831
5832	return VINF_SUCCESS;
5833	}
5834
5835	int vmsvga3dSetClipPlane(PVGASTATE pThis, uint32_t cid, uint32_t index, float plane[4])
5836	{
5837	PVMSVGA3DCONTEXT pContext;
5838	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
5839	AssertReturn(pState, VERR_NO_MEMORY);
5840	double oglPlane[4];
5841
5842	Log(("vmsvga3dSetClipPlane cid=%x %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)));
5843	AssertReturn(index < SVGA3D_CLIPPLANE_MAX, VERR_INVALID_PARAMETER);
5844
5845	if ( cid >= pState->cContexts
5846	\|\| pState->papContexts[cid]->id != cid)
5847	{
5848	Log(("vmsvga3dSetClipPlane invalid context id!\n"));
5849	return VERR_INVALID_PARAMETER;
5850	}
5851	pContext = pState->papContexts[cid];
5852	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5853
5854	/* Store for vm state save/restore. */
5855	pContext->state.aClipPlane[index].fValid = true;
5856	memcpy(pContext->state.aClipPlane[index].plane, plane, sizeof(pContext->state.aClipPlane[index].plane));
5857
5858	/** @todo clip plane affected by model view in OpenGL & view in D3D + vertex shader -> not transformed (see Wine; state.c clipplane) */
5859	oglPlane[0] = (double)plane[0];
5860	oglPlane[1] = (double)plane[1];
5861	oglPlane[2] = (double)plane[2];
5862	oglPlane[3] = (double)plane[3];
5863
5864	glClipPlane(GL_CLIP_PLANE0 + index, oglPlane);
5865	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5866
5867	return VINF_SUCCESS;
5868	}
5869
5870	int vmsvga3dSetScissorRect(PVGASTATE pThis, uint32_t cid, SVGA3dRect *pRect)
5871	{
5872	PVMSVGA3DCONTEXT pContext;
5873	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
5874	AssertReturn(pState, VERR_NO_MEMORY);
5875
5876	Log(("vmsvga3dSetScissorRect cid=%x (%d,%d)(%d,%d)\n", cid, pRect->x, pRect->y, pRect->w, pRect->h));
5877
5878	if ( cid >= pState->cContexts
5879	\|\| pState->papContexts[cid]->id != cid)
5880	{
5881	Log(("vmsvga3dSetScissorRect invalid context id!\n"));
5882	return VERR_INVALID_PARAMETER;
5883	}
5884	pContext = pState->papContexts[cid];
5885	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5886
5887	/* Store for vm state save/restore. */
5888	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_SCISSORRECT;
5889	pContext->state.RectScissor = *pRect;
5890
5891	glScissor(pRect->x, pRect->y, pRect->w, pRect->h);
5892	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5893
5894	return VINF_SUCCESS;
5895	}
5896
5897	static void vmsvgaColor2GLFloatArray(uint32_t color, GLfloat pRed, GLfloat pGreen, GLfloat pBlue, GLfloat pAlpha)
5898	{
5899	/* Convert byte color components to float (0-1.0) */
5900	*pAlpha = (GLfloat)(color >> 24) / 255.0;
5901	*pRed = (GLfloat)((color >> 16) & 0xff) / 255.0;
5902	*pGreen = (GLfloat)((color >> 8) & 0xff) / 255.0;
5903	*pBlue = (GLfloat)(color & 0xff) / 255.0;
5904	}
5905
5906	int vmsvga3dCommandClear(PVGASTATE pThis, uint32_t cid, SVGA3dClearFlag clearFlag, uint32_t color, float depth, uint32_t stencil,
5907	uint32_t cRects, SVGA3dRect *pRect)
5908	{
5909	GLbitfield mask = 0;
5910	PVMSVGA3DCONTEXT pContext;
5911	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
5912	AssertReturn(pState, VERR_NO_MEMORY);
5913	GLboolean fDepthWriteEnabled = GL_FALSE;
5914
5915	Log(("vmsvga3dCommandClear cid=%x clearFlag=%x color=%x depth=%d stencil=%x cRects=%d\n", cid, clearFlag, color, (uint32_t)(depth * 100.0), stencil, cRects));
5916
5917	if ( cid >= pState->cContexts
5918	\|\| pState->papContexts[cid]->id != cid)
5919	{
5920	Log(("vmsvga3dCommandClear invalid context id!\n"));
5921	return VERR_INVALID_PARAMETER;
5922	}
5923	pContext = pState->papContexts[cid];
5924	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5925
5926	if (clearFlag & SVGA3D_CLEAR_COLOR)
5927	{
5928	GLfloat red, green, blue, alpha;
5929
5930	vmsvgaColor2GLFloatArray(color, &red, &green, &blue, &alpha);
5931
5932	/* Set the color clear value. */
5933	glClearColor(red, green, blue, alpha);
5934
5935	mask \|= GL_COLOR_BUFFER_BIT;
5936	}
5937	if (clearFlag & SVGA3D_CLEAR_STENCIL)
5938	{
5939	/** @todo possibly the same problem as with glDepthMask */
5940	glClearStencil(stencil);
5941	mask \|= GL_STENCIL_BUFFER_BIT;
5942	}
5943	if (clearFlag & SVGA3D_CLEAR_DEPTH)
5944	{
5945	glClearDepth((GLdouble)depth);
5946	mask \|= GL_DEPTH_BUFFER_BIT;
5947
5948	/* glClear will not clear the depth buffer if writing is disabled. */
5949	glGetBooleanv(GL_DEPTH_WRITEMASK, &fDepthWriteEnabled);
5950	if (fDepthWriteEnabled == GL_FALSE)
5951	glDepthMask(GL_TRUE);
5952	}
5953
5954	if (cRects)
5955	{
5956	/* Save the current scissor test bit and scissor box. */
5957	glPushAttrib(GL_SCISSOR_BIT);
5958	glEnable(GL_SCISSOR_TEST);
5959	for (unsigned i=0; i < cRects; i++)
5960	{
5961	Log(("vmsvga3dCommandClear: rect %d (%d,%d)(%d,%d)\n", i, pRect[i].x, pRect[i].y, pRect[i].x + pRect[i].w, pRect[i].y + pRect[i].h));
5962	glScissor(pRect[i].x, pRect[i].y, pRect[i].w, pRect[i].h);
5963	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5964	glClear(mask);
5965	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5966	}
5967	/* Restore the old scissor test bit and box */
5968	glPopAttrib();
5969	}
5970	else
5971	{
5972	glClear(mask);
5973	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5974	}
5975
5976	/* Restore depth write state. */
5977	if ( (clearFlag & SVGA3D_CLEAR_DEPTH)
5978	&& fDepthWriteEnabled == GL_FALSE)
5979	glDepthMask(GL_FALSE);
5980
5981	return VINF_SUCCESS;
5982	}
5983
5984	/* Convert VMWare vertex declaration to its OpenGL equivalent. */
5985	int vmsvga3dVertexDecl2OGL(SVGA3dVertexArrayIdentity &identity, GLint &size, GLenum &type, GLboolean &normalized)
5986	{
5987	normalized = GL_FALSE;
5988	switch (identity.type)
5989	{
5990	case SVGA3D_DECLTYPE_FLOAT1:
5991	size = 1;
5992	type = GL_FLOAT;
5993	break;
5994	case SVGA3D_DECLTYPE_FLOAT2:
5995	size = 2;
5996	type = GL_FLOAT;
5997	break;
5998	case SVGA3D_DECLTYPE_FLOAT3:
5999	size = 3;
6000	type = GL_FLOAT;
6001	break;
6002	case SVGA3D_DECLTYPE_FLOAT4:
6003	size = 4;
6004	type = GL_FLOAT;
6005	break;
6006
6007	case SVGA3D_DECLTYPE_D3DCOLOR:
6008	size = GL_BGRA; /* @note requires GL_ARB_vertex_array_bgra */
6009	type = GL_UNSIGNED_BYTE;
6010	normalized = GL_TRUE; /* glVertexAttribPointer fails otherwise */
6011	break;
6012
6013	case SVGA3D_DECLTYPE_UBYTE4N:
6014	normalized = GL_TRUE;
6015	RT_FALL_THRU();
6016	case SVGA3D_DECLTYPE_UBYTE4:
6017	size = 4;
6018	type = GL_UNSIGNED_BYTE;
6019	break;
6020
6021	case SVGA3D_DECLTYPE_SHORT2N:
6022	normalized = GL_TRUE;
6023	RT_FALL_THRU();
6024	case SVGA3D_DECLTYPE_SHORT2:
6025	size = 2;
6026	type = GL_SHORT;
6027	break;
6028
6029	case SVGA3D_DECLTYPE_SHORT4N:
6030	normalized = GL_TRUE;
6031	RT_FALL_THRU();
6032	case SVGA3D_DECLTYPE_SHORT4:
6033	size = 4;
6034	type = GL_SHORT;
6035	break;
6036
6037	case SVGA3D_DECLTYPE_USHORT4N:
6038	normalized = GL_TRUE;
6039	size = 4;
6040	type = GL_UNSIGNED_SHORT;
6041	break;
6042
6043	case SVGA3D_DECLTYPE_USHORT2N:
6044	normalized = GL_TRUE;
6045	size = 2;
6046	type = GL_UNSIGNED_SHORT;
6047	break;
6048
6049	case SVGA3D_DECLTYPE_UDEC3:
6050	size = 3;
6051	type = GL_UNSIGNED_INT_2_10_10_10_REV; /** @todo correct? */
6052	break;
6053
6054	case SVGA3D_DECLTYPE_DEC3N:
6055	normalized = true;
6056	size = 3;
6057	type = GL_INT_2_10_10_10_REV; /** @todo correct? */
6058	break;
6059
6060	case SVGA3D_DECLTYPE_FLOAT16_2:
6061	size = 2;
6062	type = GL_HALF_FLOAT;
6063	break;
6064	case SVGA3D_DECLTYPE_FLOAT16_4:
6065	size = 4;
6066	type = GL_HALF_FLOAT;
6067	break;
6068	default:
6069	AssertFailedReturn(VERR_INVALID_PARAMETER);
6070	}
6071
6072	//pVertexElement->Method = identity.method;
6073	//pVertexElement->Usage = identity.usage;
6074
6075	return VINF_SUCCESS;
6076	}
6077
6078	/* Convert VMWare primitive type to its OpenGL equivalent. */
6079	/* Calculate the vertex count based on the primitive type and nr of primitives. */
6080	int vmsvga3dPrimitiveType2OGL(SVGA3dPrimitiveType PrimitiveType, GLenum pMode, uint32_t cPrimitiveCount, uint32_t pcVertices)
6081	{
6082	switch (PrimitiveType)
6083	{
6084	case SVGA3D_PRIMITIVE_TRIANGLELIST:
6085	*pMode = GL_TRIANGLES;
6086	pcVertices = cPrimitiveCount 3;
6087	break;
6088	case SVGA3D_PRIMITIVE_POINTLIST:
6089	*pMode = GL_POINTS;
6090	*pcVertices = cPrimitiveCount;
6091	break;
6092	case SVGA3D_PRIMITIVE_LINELIST:
6093	*pMode = GL_LINES;
6094	pcVertices = cPrimitiveCount 2;
6095	break;
6096	case SVGA3D_PRIMITIVE_LINESTRIP:
6097	*pMode = GL_LINE_STRIP;
6098	*pcVertices = cPrimitiveCount + 1;
6099	break;
6100	case SVGA3D_PRIMITIVE_TRIANGLESTRIP:
6101	*pMode = GL_TRIANGLE_STRIP;
6102	*pcVertices = cPrimitiveCount + 2;
6103	break;
6104	case SVGA3D_PRIMITIVE_TRIANGLEFAN:
6105	*pMode = GL_TRIANGLE_FAN;
6106	*pcVertices = cPrimitiveCount + 2;
6107	break;
6108	default:
6109	return VERR_INVALID_PARAMETER;
6110	}
6111	return VINF_SUCCESS;
6112	}
6113
6114	int vmsvga3dResetTransformMatrices(PVGASTATE pThis, PVMSVGA3DCONTEXT pContext)
6115	{
6116	int rc;
6117
6118	/* Reset the view matrix (also takes the world matrix into account). */
6119	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].fValid == true)
6120	{
6121	rc = vmsvga3dSetTransform(pThis, pContext->id, SVGA3D_TRANSFORM_VIEW, pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
6122	}
6123	else
6124	{
6125	float matrix[16];
6126
6127	/* identity matrix if no matrix set. */
6128	memset(matrix, 0, sizeof(matrix));
6129	matrix[0] = 1.0;
6130	matrix[5] = 1.0;
6131	matrix[10] = 1.0;
6132	matrix[15] = 1.0;
6133	rc = vmsvga3dSetTransform(pThis, pContext->id, SVGA3D_TRANSFORM_VIEW, matrix);
6134	}
6135
6136	/* Reset the projection matrix. */
6137	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].fValid == true)
6138	{
6139	rc = vmsvga3dSetTransform(pThis, pContext->id, SVGA3D_TRANSFORM_PROJECTION, pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].matrix);
6140	}
6141	else
6142	{
6143	float matrix[16];
6144
6145	/* identity matrix if no matrix set. */
6146	memset(matrix, 0, sizeof(matrix));
6147	matrix[0] = 1.0;
6148	matrix[5] = 1.0;
6149	matrix[10] = 1.0;
6150	matrix[15] = 1.0;
6151	rc = vmsvga3dSetTransform(pThis, pContext->id, SVGA3D_TRANSFORM_PROJECTION, matrix);
6152	}
6153	AssertRC(rc);
6154	return rc;
6155	}
6156
6157	int vmsvga3dDrawPrimitivesProcessVertexDecls(PVGASTATE pThis, PVMSVGA3DCONTEXT pContext,
6158	uint32_t iVertexDeclBase, uint32_t numVertexDecls,
6159	SVGA3dVertexDecl pVertexDecl, SVGA3dVertexDivisor const paVertexDivisors)
6160	{
6161	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
6162	unsigned sidVertex = pVertexDecl[0].array.surfaceId;
6163	PVMSVGA3DSURFACE pVertexSurface;
6164
6165	AssertReturn(sidVertex < SVGA3D_MAX_SURFACE_IDS, VERR_INVALID_PARAMETER);
6166	AssertReturn(sidVertex < pState->cSurfaces && pState->papSurfaces[sidVertex]->id == sidVertex, VERR_INVALID_PARAMETER);
6167
6168	pVertexSurface = pState->papSurfaces[sidVertex];
6169	Log(("vmsvga3dDrawPrimitives: vertex surface %x\n", sidVertex));
6170
6171	/* Create and/or bind the vertex buffer. */
6172	if (pVertexSurface->oglId.buffer == OPENGL_INVALID_ID)
6173	{
6174	Log(("vmsvga3dDrawPrimitives: create vertex buffer fDirty=%d size=%x bytes\n", pVertexSurface->fDirty, pVertexSurface->pMipmapLevels[0].cbSurface));
6175	PVMSVGA3DCONTEXT pSavedCtx = pContext;
6176	pContext = &pState->SharedCtx;
6177	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6178
6179	pState->ext.glGenBuffers(1, &pVertexSurface->oglId.buffer);
6180	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6181
6182	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pVertexSurface->oglId.buffer);
6183	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6184
6185	Assert(pVertexSurface->fDirty);
6186	/** @todo rethink usage dynamic/static */
6187	pState->ext.glBufferData(GL_ARRAY_BUFFER, pVertexSurface->pMipmapLevels[0].cbSurface, pVertexSurface->pMipmapLevels[0].pSurfaceData, GL_DYNAMIC_DRAW);
6188	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6189
6190	pVertexSurface->pMipmapLevels[0].fDirty = false;
6191	pVertexSurface->fDirty = false;
6192
6193	pVertexSurface->surfaceFlags \|= SVGA3D_SURFACE_HINT_VERTEXBUFFER;
6194
6195	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, OPENGL_INVALID_ID);
6196	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6197
6198	pContext = pSavedCtx;
6199	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6200	}
6201
6202	Assert(pVertexSurface->fDirty == false);
6203	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pVertexSurface->oglId.buffer);
6204	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6205
6206	/* Setup the vertex declarations. */
6207	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
6208	{
6209	GLint size;
6210	GLenum type;
6211	GLboolean normalized;
6212	GLuint index = iVertexDeclBase + iVertex;
6213
6214	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));
6215
6216	int rc = vmsvga3dVertexDecl2OGL(pVertexDecl[iVertex].identity, size, type, normalized);
6217	AssertRCReturn(rc, rc);
6218
6219	if (pContext->state.shidVertex != SVGA_ID_INVALID)
6220	{
6221	/* Use numbered vertex arrays when shaders are active. */
6222	pState->ext.glEnableVertexAttribArray(index);
6223	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6224	pState->ext.glVertexAttribPointer(index, size, type, normalized, pVertexDecl[iVertex].array.stride,
6225	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6226	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6227
6228	GLuint const divisor = paVertexDivisors && paVertexDivisors[index].s.instanceData ? 1 : 0;
6229	pState->ext.glVertexAttribDivisor(index, divisor);
6230	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6231
6232	/** @todo case SVGA3D_DECLUSAGE_COLOR: color component order not identical!! test GL_BGRA!! */
6233	}
6234	else
6235	{
6236	/* Use the predefined selection of vertex streams for the fixed pipeline. */
6237	switch (pVertexDecl[iVertex].identity.usage)
6238	{
6239	case SVGA3D_DECLUSAGE_POSITIONT:
6240	case SVGA3D_DECLUSAGE_POSITION:
6241	{
6242	glEnableClientState(GL_VERTEX_ARRAY);
6243	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6244	glVertexPointer(size, type, pVertexDecl[iVertex].array.stride,
6245	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6246	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6247	break;
6248	}
6249	case SVGA3D_DECLUSAGE_BLENDWEIGHT:
6250	AssertFailed();
6251	break;
6252	case SVGA3D_DECLUSAGE_BLENDINDICES:
6253	AssertFailed();
6254	break;
6255	case SVGA3D_DECLUSAGE_NORMAL:
6256	glEnableClientState(GL_NORMAL_ARRAY);
6257	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6258	glNormalPointer(type, pVertexDecl[iVertex].array.stride,
6259	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6260	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6261	break;
6262	case SVGA3D_DECLUSAGE_PSIZE:
6263	AssertFailed();
6264	break;
6265	case SVGA3D_DECLUSAGE_TEXCOORD:
6266	/* Specify the affected texture unit. */
6267	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x103
6268	glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6269	#else
6270	pState->ext.glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6271	#endif
6272	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
6273	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6274	glTexCoordPointer(size, type, pVertexDecl[iVertex].array.stride,
6275	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6276	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6277	break;
6278	case SVGA3D_DECLUSAGE_TANGENT:
6279	AssertFailed();
6280	break;
6281	case SVGA3D_DECLUSAGE_BINORMAL:
6282	AssertFailed();
6283	break;
6284	case SVGA3D_DECLUSAGE_TESSFACTOR:
6285	AssertFailed();
6286	break;
6287	case SVGA3D_DECLUSAGE_COLOR: /** @todo color component order not identical!! test GL_BGRA!! */
6288	glEnableClientState(GL_COLOR_ARRAY);
6289	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6290	glColorPointer(size, type, pVertexDecl[iVertex].array.stride,
6291	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6292	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6293	break;
6294	case SVGA3D_DECLUSAGE_FOG:
6295	glEnableClientState(GL_FOG_COORD_ARRAY);
6296	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6297	pState->ext.glFogCoordPointer(type, pVertexDecl[iVertex].array.stride,
6298	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6299	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6300	break;
6301	case SVGA3D_DECLUSAGE_DEPTH:
6302	AssertFailed();
6303	break;
6304	case SVGA3D_DECLUSAGE_SAMPLE:
6305	AssertFailed();
6306	break;
6307	case SVGA3D_DECLUSAGE_MAX: AssertFailed(); break; /* shut up gcc */
6308	}
6309	}
6310
6311	#ifdef LOG_ENABLED
6312	if (pVertexDecl[iVertex].array.stride == 0)
6313	Log(("vmsvga3dDrawPrimitives: stride == 0! Can be valid\n"));
6314	#endif
6315	}
6316
6317	return VINF_SUCCESS;
6318	}
6319
6320	int vmsvga3dDrawPrimitivesCleanupVertexDecls(PVGASTATE pThis, PVMSVGA3DCONTEXT pContext, uint32_t iVertexDeclBase, uint32_t numVertexDecls, SVGA3dVertexDecl *pVertexDecl)
6321	{
6322	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
6323
6324	/* Clean up the vertex declarations. */
6325	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
6326	{
6327	if (pVertexDecl[iVertex].identity.usage == SVGA3D_DECLUSAGE_POSITIONT)
6328	{
6329	/* Reset the transformation matrices in case of a switch back from pretransformed mode. */
6330	Log(("vmsvga3dDrawPrimitivesCleanupVertexDecls: reset world and projection matrices after transformation reset (pre-transformed -> transformed)\n"));
6331	vmsvga3dResetTransformMatrices(pThis, pContext);
6332	}
6333
6334	if (pContext->state.shidVertex != SVGA_ID_INVALID)
6335	{
6336	/* Use numbered vertex arrays when shaders are active. */
6337	pState->ext.glDisableVertexAttribArray(iVertexDeclBase + iVertex);
6338	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6339	}
6340	else
6341	{
6342	/* Use the predefined selection of vertex streams for the fixed pipeline. */
6343	switch (pVertexDecl[iVertex].identity.usage)
6344	{
6345	case SVGA3D_DECLUSAGE_POSITION:
6346	case SVGA3D_DECLUSAGE_POSITIONT:
6347	glDisableClientState(GL_VERTEX_ARRAY);
6348	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6349	break;
6350	case SVGA3D_DECLUSAGE_BLENDWEIGHT:
6351	break;
6352	case SVGA3D_DECLUSAGE_BLENDINDICES:
6353	break;
6354	case SVGA3D_DECLUSAGE_NORMAL:
6355	glDisableClientState(GL_NORMAL_ARRAY);
6356	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6357	break;
6358	case SVGA3D_DECLUSAGE_PSIZE:
6359	break;
6360	case SVGA3D_DECLUSAGE_TEXCOORD:
6361	/* Specify the affected texture unit. */
6362	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x103
6363	glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6364	#else
6365	pState->ext.glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6366	#endif
6367	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
6368	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6369	break;
6370	case SVGA3D_DECLUSAGE_TANGENT:
6371	break;
6372	case SVGA3D_DECLUSAGE_BINORMAL:
6373	break;
6374	case SVGA3D_DECLUSAGE_TESSFACTOR:
6375	break;
6376	case SVGA3D_DECLUSAGE_COLOR: /** @todo color component order not identical!! */
6377	glDisableClientState(GL_COLOR_ARRAY);
6378	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6379	break;
6380	case SVGA3D_DECLUSAGE_FOG:
6381	glDisableClientState(GL_FOG_COORD_ARRAY);
6382	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6383	break;
6384	case SVGA3D_DECLUSAGE_DEPTH:
6385	break;
6386	case SVGA3D_DECLUSAGE_SAMPLE:
6387	break;
6388	case SVGA3D_DECLUSAGE_MAX: AssertFailed(); break; /* shut up gcc */
6389	}
6390	}
6391	}
6392	/* Unbind the vertex buffer after usage. */
6393	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
6394	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6395	return VINF_SUCCESS;
6396	}
6397
6398	int vmsvga3dDrawPrimitives(PVGASTATE pThis, uint32_t cid, uint32_t numVertexDecls, SVGA3dVertexDecl *pVertexDecl,
6399	uint32_t numRanges, SVGA3dPrimitiveRange *pRange, uint32_t cVertexDivisor,
6400	SVGA3dVertexDivisor *pVertexDivisor)
6401	{
6402	RT_NOREF(pVertexDivisor);
6403	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
6404	AssertReturn(pState, VERR_INTERNAL_ERROR);
6405	PVMSVGA3DCONTEXT pContext;
6406	int rc = VERR_NOT_IMPLEMENTED;
6407	uint32_t iCurrentVertex;
6408
6409	Log(("vmsvga3dDrawPrimitives cid=%x numVertexDecls=%d numRanges=%d, cVertexDivisor=%d\n", cid, numVertexDecls, numRanges, cVertexDivisor));
6410
6411	/* Caller already check these, but it cannot hurt to check again... */
6412	AssertReturn(numVertexDecls && numVertexDecls <= SVGA3D_MAX_VERTEX_ARRAYS, VERR_INVALID_PARAMETER);
6413	AssertReturn(numRanges && numRanges <= SVGA3D_MAX_DRAW_PRIMITIVE_RANGES, VERR_INVALID_PARAMETER);
6414	AssertReturn(!cVertexDivisor \|\| cVertexDivisor == numVertexDecls, VERR_INVALID_PARAMETER);
6415
6416	if (!cVertexDivisor)
6417	pVertexDivisor = NULL; /* Be sure. */
6418
6419	if ( cid >= pState->cContexts
6420	\|\| pState->papContexts[cid]->id != cid)
6421	{
6422	Log(("vmsvga3dDrawPrimitives invalid context id!\n"));
6423	return VERR_INVALID_PARAMETER;
6424	}
6425	pContext = pState->papContexts[cid];
6426	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6427
6428	/* Check for pretransformed vertex declarations. */
6429	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
6430	{
6431	switch (pVertexDecl[iVertex].identity.usage)
6432	{
6433	case SVGA3D_DECLUSAGE_POSITIONT:
6434	Log(("ShaderSetPositionTransformed: (%d,%d)\n", pContext->state.RectViewPort.w, pContext->state.RectViewPort.h));
6435	RT_FALL_THRU();
6436	case SVGA3D_DECLUSAGE_POSITION:
6437	ShaderSetPositionTransformed(pContext->pShaderContext, pContext->state.RectViewPort.w,
6438	pContext->state.RectViewPort.h,
6439	pVertexDecl[iVertex].identity.usage == SVGA3D_DECLUSAGE_POSITIONT);
6440	break;
6441	default: /* Shut up MSC. */ break;
6442	}
6443	}
6444
6445	/* Try to figure out if instancing is used.
6446	* Support simple instancing case with one set of indexed data and one set per-instance data.
6447	*/
6448	uint32_t cInstances = 0;
6449	for (uint32_t iVertexDivisor = 0; iVertexDivisor < cVertexDivisor; ++iVertexDivisor)
6450	{
6451	if (pVertexDivisor[iVertexDivisor].s.indexedData)
6452	{
6453	if (cInstances == 0)
6454	cInstances = pVertexDivisor[iVertexDivisor].s.count;
6455	else
6456	Assert(cInstances == pVertexDivisor[iVertexDivisor].s.count);
6457	}
6458	else if (pVertexDivisor[iVertexDivisor].s.instanceData)
6459	{
6460	Assert(pVertexDivisor[iVertexDivisor].s.count == 1);
6461	}
6462	}
6463
6464	/* Flush any shader changes; after (!) checking the vertex declarations to deal with pre-transformed vertices. */
6465	if (pContext->pShaderContext)
6466	{
6467	uint32_t rtHeight = 0;
6468
6469	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0] != SVGA_ID_INVALID)
6470	{
6471	PVMSVGA3DSURFACE pRenderTarget = pState->papSurfaces[pContext->state.aRenderTargets[SVGA3D_RT_COLOR0]];
6472	rtHeight = pRenderTarget->pMipmapLevels[0].mipmapSize.height;
6473	}
6474
6475	ShaderUpdateState(pContext->pShaderContext, rtHeight);
6476	}
6477
6478	/* Process all vertex declarations. Each vertex buffer is represented by one stream. */
6479	iCurrentVertex = 0;
6480	while (iCurrentVertex < numVertexDecls)
6481	{
6482	uint32_t sidVertex = SVGA_ID_INVALID;
6483	uint32_t iVertex;
6484
6485	for (iVertex = iCurrentVertex; iVertex < numVertexDecls; iVertex++)
6486	{
6487	if ( sidVertex != SVGA_ID_INVALID
6488	&& pVertexDecl[iVertex].array.surfaceId != sidVertex
6489	)
6490	break;
6491	sidVertex = pVertexDecl[iVertex].array.surfaceId;
6492	}
6493
6494	rc = vmsvga3dDrawPrimitivesProcessVertexDecls(pThis, pContext, iCurrentVertex, iVertex - iCurrentVertex,
6495	&pVertexDecl[iCurrentVertex], pVertexDivisor);
6496	AssertRCReturn(rc, rc);
6497
6498	iCurrentVertex = iVertex;
6499	}
6500
6501	/* Now draw the primitives. */
6502	for (unsigned iPrimitive = 0; iPrimitive < numRanges; iPrimitive++)
6503	{
6504	GLenum modeDraw;
6505	unsigned sidIndex = pRange[iPrimitive].indexArray.surfaceId;
6506	PVMSVGA3DSURFACE pIndexSurface = NULL;
6507	unsigned cVertices;
6508
6509	Log(("Primitive %d: type %s\n", iPrimitive, vmsvga3dPrimitiveType2String(pRange[iPrimitive].primType)));
6510	rc = vmsvga3dPrimitiveType2OGL(pRange[iPrimitive].primType, &modeDraw, pRange[iPrimitive].primitiveCount, &cVertices);
6511	if (RT_FAILURE(rc))
6512	{
6513	AssertRC(rc);
6514	goto internal_error;
6515	}
6516
6517	if (sidIndex != SVGA3D_INVALID_ID)
6518	{
6519	AssertMsg(pRange[iPrimitive].indexWidth == sizeof(uint32_t) \|\| pRange[iPrimitive].indexWidth == sizeof(uint16_t), ("Unsupported primitive width %d\n", pRange[iPrimitive].indexWidth));
6520
6521	if ( sidIndex >= SVGA3D_MAX_SURFACE_IDS
6522	\|\| sidIndex >= pState->cSurfaces
6523	\|\| pState->papSurfaces[sidIndex]->id != sidIndex)
6524	{
6525	Assert(sidIndex < SVGA3D_MAX_SURFACE_IDS);
6526	Assert(sidIndex < pState->cSurfaces && pState->papSurfaces[sidIndex]->id == sidIndex);
6527	rc = VERR_INVALID_PARAMETER;
6528	goto internal_error;
6529	}
6530	pIndexSurface = pState->papSurfaces[sidIndex];
6531	Log(("vmsvga3dDrawPrimitives: index surface %x\n", sidIndex));
6532
6533	if (pIndexSurface->oglId.buffer == OPENGL_INVALID_ID)
6534	{
6535	Log(("vmsvga3dDrawPrimitives: create index buffer fDirty=%d size=%x bytes\n", pIndexSurface->fDirty, pIndexSurface->pMipmapLevels[0].cbSurface));
6536	pContext = &pState->SharedCtx;
6537	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6538
6539	pState->ext.glGenBuffers(1, &pIndexSurface->oglId.buffer);
6540	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6541
6542	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->oglId.buffer);
6543	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6544
6545	Assert(pIndexSurface->fDirty);
6546
6547	/** @todo rethink usage dynamic/static */
6548	pState->ext.glBufferData(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->pMipmapLevels[0].cbSurface, pIndexSurface->pMipmapLevels[0].pSurfaceData, GL_DYNAMIC_DRAW);
6549	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6550
6551	pIndexSurface->pMipmapLevels[0].fDirty = false;
6552	pIndexSurface->fDirty = false;
6553
6554	pIndexSurface->surfaceFlags \|= SVGA3D_SURFACE_HINT_INDEXBUFFER;
6555
6556	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, OPENGL_INVALID_ID);
6557	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6558
6559	pContext = pState->papContexts[cid];
6560	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6561	}
6562	Assert(pIndexSurface->fDirty == false);
6563
6564	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->oglId.buffer);
6565	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6566	}
6567
6568	if (!pIndexSurface)
6569	{
6570	/* Render without an index buffer */
6571	Log(("DrawPrimitive %x cPrimitives=%d cVertices=%d index index bias=%d\n", modeDraw, pRange[iPrimitive].primitiveCount, cVertices, pRange[iPrimitive].indexBias));
6572	if (cInstances == 0)
6573	{
6574	glDrawArrays(modeDraw, pRange[iPrimitive].indexBias, cVertices);
6575	}
6576	else
6577	{
6578	pState->ext.glDrawArraysInstanced(modeDraw, pRange[iPrimitive].indexBias, cVertices, cInstances);
6579	}
6580	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6581	}
6582	else
6583	{
6584	GLenum indexType;
6585
6586	Assert(pRange[iPrimitive].indexBias >= 0); /** @todo indexBias */
6587	Assert(pRange[iPrimitive].indexWidth == pRange[iPrimitive].indexArray.stride);
6588
6589	if (pRange[iPrimitive].indexWidth == sizeof(uint8_t))
6590	{
6591	indexType = GL_UNSIGNED_BYTE;
6592	}
6593	else
6594	if (pRange[iPrimitive].indexWidth == sizeof(uint16_t))
6595	{
6596	indexType = GL_UNSIGNED_SHORT;
6597	}
6598	else
6599	{
6600	Assert(pRange[iPrimitive].indexWidth == sizeof(uint32_t));
6601	indexType = GL_UNSIGNED_INT;
6602	}
6603
6604	Log(("DrawIndexedPrimitive %x cPrimitives=%d cVertices=%d hint.first=%d hint.last=%d index offset=%d primitivecount=%d index width=%d index bias=%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));
6605	if (cInstances == 0)
6606	{
6607	/* Render with an index buffer */
6608	if (pRange[iPrimitive].indexBias == 0)
6609	glDrawElements(modeDraw,
6610	cVertices,
6611	indexType,
6612	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset); / byte offset in indices buffer */
6613	else
6614	pState->ext.glDrawElementsBaseVertex(modeDraw,
6615	cVertices,
6616	indexType,
6617	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
6618	pRange[iPrimitive].indexBias); /* basevertex */
6619	}
6620	else
6621	{
6622	/* Render with an index buffer */
6623	if (pRange[iPrimitive].indexBias == 0)
6624	pState->ext.glDrawElementsInstanced(modeDraw,
6625	cVertices,
6626	indexType,
6627	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
6628	cInstances);
6629	else
6630	pState->ext.glDrawElementsInstancedBaseVertex(modeDraw,
6631	cVertices,
6632	indexType,
6633	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
6634	cInstances,
6635	pRange[iPrimitive].indexBias); /* basevertex */
6636	}
6637	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6638
6639	/* Unbind the index buffer after usage. */
6640	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
6641	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6642	}
6643	}
6644
6645	internal_error:
6646
6647	/* Deactivate the vertex declarations. */
6648	iCurrentVertex = 0;
6649	while (iCurrentVertex < numVertexDecls)
6650	{
6651	uint32_t sidVertex = SVGA_ID_INVALID;
6652	uint32_t iVertex;
6653
6654	for (iVertex = iCurrentVertex; iVertex < numVertexDecls; iVertex++)
6655	{
6656	if ( sidVertex != SVGA_ID_INVALID
6657	&& pVertexDecl[iVertex].array.surfaceId != sidVertex
6658	)
6659	break;
6660	sidVertex = pVertexDecl[iVertex].array.surfaceId;
6661	}
6662
6663	rc = vmsvga3dDrawPrimitivesCleanupVertexDecls(pThis, pContext, iCurrentVertex, iVertex - iCurrentVertex, &pVertexDecl[iCurrentVertex]);
6664	AssertRCReturn(rc, rc);
6665
6666	iCurrentVertex = iVertex;
6667	}
6668	#ifdef DEBUG
6669	/* Check whether 'activeTexture' on texture unit 'i' matches what we expect. */
6670	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); ++i)
6671	{
6672	if (pContext->aSidActiveTextures[i] != SVGA3D_INVALID_ID)
6673	{
6674	PVMSVGA3DSURFACE pTexture;
6675	int rc2 = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[i], &pTexture);
6676	AssertContinue(RT_SUCCESS(rc2));
6677
6678	GLint activeTextureUnit = 0;
6679	glGetIntegerv(GL_ACTIVE_TEXTURE, &activeTextureUnit);
6680	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6681
6682	pState->ext.glActiveTexture(GL_TEXTURE0 + i);
6683	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6684
6685	GLint activeTexture = 0;
6686	glGetIntegerv(pTexture->bindingGL, &activeTexture);
6687	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6688
6689	pState->ext.glActiveTexture(activeTextureUnit);
6690	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6691
6692	AssertMsg(pTexture->oglId.texture == (GLuint)activeTexture,
6693	("%x vs %x unit %d (active unit %d) sid=%x\n", pTexture->oglId.texture, activeTexture, i,
6694	activeTextureUnit - GL_TEXTURE0, pContext->aSidActiveTextures[i]));
6695	}
6696	}
6697	#endif
6698
6699	#ifdef DEBUG_GFX_WINDOW
6700	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0])
6701	{
6702	SVGA3dCopyRect rect;
6703
6704	rect.srcx = rect.srcy = rect.x = rect.y = 0;
6705	rect.w = pContext->state.RectViewPort.w;
6706	rect.h = pContext->state.RectViewPort.h;
6707	vmsvga3dCommandPresent(pThis, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0], 0, NULL);
6708	}
6709	#endif
6710
6711	#if 0
6712	/* Dump render target to a bitmap. */
6713	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0] != SVGA3D_INVALID_ID)
6714	{
6715	vmsvga3dUpdateHeapBuffersForSurfaces(pThis, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0]);
6716	PVMSVGA3DSURFACE pSurface;
6717	int rc2 = vmsvga3dSurfaceFromSid(pState, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0], &pSurface);
6718	if (RT_SUCCESS(rc2))
6719	vmsvga3dInfoSurfaceToBitmap(NULL, pSurface, "bmp", "rt", "-post");
6720	}
6721	#endif
6722
6723	return rc;
6724	}
6725
6726
6727	int vmsvga3dShaderDefine(PVGASTATE pThis, uint32_t cid, uint32_t shid, SVGA3dShaderType type, uint32_t cbData, uint32_t *pShaderData)
6728	{
6729	PVMSVGA3DCONTEXT pContext;
6730	PVMSVGA3DSHADER pShader;
6731	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
6732	AssertReturn(pState, VERR_NO_MEMORY);
6733	int rc;
6734
6735	Log(("vmsvga3dShaderDefine cid=%x shid=%x type=%s cbData=%x\n", cid, shid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", cbData));
6736	Log3(("shader code:\n%.*Rhxd\n", cbData, pShaderData));
6737
6738	if ( cid >= pState->cContexts
6739	\|\| pState->papContexts[cid]->id != cid)
6740	{
6741	Log(("vmsvga3dShaderDefine invalid context id!\n"));
6742	return VERR_INVALID_PARAMETER;
6743	}
6744	pContext = pState->papContexts[cid];
6745	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6746
6747	AssertReturn(shid < SVGA3D_MAX_SHADER_IDS, VERR_INVALID_PARAMETER);
6748	if (type == SVGA3D_SHADERTYPE_VS)
6749	{
6750	if (shid >= pContext->cVertexShaders)
6751	{
6752	void pvNew = RTMemRealloc(pContext->paVertexShader, sizeof(VMSVGA3DSHADER) (shid + 1));
6753	AssertReturn(pvNew, VERR_NO_MEMORY);
6754	pContext->paVertexShader = (PVMSVGA3DSHADER)pvNew;
6755	memset(&pContext->paVertexShader[pContext->cVertexShaders], 0, sizeof(VMSVGA3DSHADER) * (shid + 1 - pContext->cVertexShaders));
6756	for (uint32_t i = pContext->cVertexShaders; i < shid + 1; i++)
6757	pContext->paVertexShader[i].id = SVGA3D_INVALID_ID;
6758	pContext->cVertexShaders = shid + 1;
6759	}
6760	/* If one already exists with this id, then destroy it now. */
6761	if (pContext->paVertexShader[shid].id != SVGA3D_INVALID_ID)
6762	vmsvga3dShaderDestroy(pThis, cid, shid, pContext->paVertexShader[shid].type);
6763
6764	pShader = &pContext->paVertexShader[shid];
6765	}
6766	else
6767	{
6768	Assert(type == SVGA3D_SHADERTYPE_PS);
6769	if (shid >= pContext->cPixelShaders)
6770	{
6771	void pvNew = RTMemRealloc(pContext->paPixelShader, sizeof(VMSVGA3DSHADER) (shid + 1));
6772	AssertReturn(pvNew, VERR_NO_MEMORY);
6773	pContext->paPixelShader = (PVMSVGA3DSHADER)pvNew;
6774	memset(&pContext->paPixelShader[pContext->cPixelShaders], 0, sizeof(VMSVGA3DSHADER) * (shid + 1 - pContext->cPixelShaders));
6775	for (uint32_t i = pContext->cPixelShaders; i < shid + 1; i++)
6776	pContext->paPixelShader[i].id = SVGA3D_INVALID_ID;
6777	pContext->cPixelShaders = shid + 1;
6778	}
6779	/* If one already exists with this id, then destroy it now. */
6780	if (pContext->paPixelShader[shid].id != SVGA3D_INVALID_ID)
6781	vmsvga3dShaderDestroy(pThis, cid, shid, pContext->paPixelShader[shid].type);
6782
6783	pShader = &pContext->paPixelShader[shid];
6784	}
6785
6786	memset(pShader, 0, sizeof(*pShader));
6787	pShader->id = shid;
6788	pShader->cid = cid;
6789	pShader->type = type;
6790	pShader->cbData = cbData;
6791	pShader->pShaderProgram = RTMemAllocZ(cbData);
6792	AssertReturn(pShader->pShaderProgram, VERR_NO_MEMORY);
6793	memcpy(pShader->pShaderProgram, pShaderData, cbData);
6794
6795	#ifdef DUMP_SHADER_DISASSEMBLY
6796	LPD3DXBUFFER pDisassembly;
6797	HRESULT hr = D3DXDisassembleShader((const DWORD *)pShaderData, FALSE, NULL, &pDisassembly);
6798	if (hr == D3D_OK)
6799	{
6800	Log(("Shader disassembly:\n%s\n", pDisassembly->GetBufferPointer()));
6801	pDisassembly->Release();
6802	}
6803	#endif
6804
6805	switch (type)
6806	{
6807	case SVGA3D_SHADERTYPE_VS:
6808	rc = ShaderCreateVertexShader(pContext->pShaderContext, (const uint32_t *)pShaderData, &pShader->u.pVertexShader);
6809	break;
6810
6811	case SVGA3D_SHADERTYPE_PS:
6812	rc = ShaderCreatePixelShader(pContext->pShaderContext, (const uint32_t *)pShaderData, &pShader->u.pPixelShader);
6813	break;
6814
6815	default:
6816	AssertFailedReturn(VERR_INVALID_PARAMETER);
6817	}
6818	if (rc != VINF_SUCCESS)
6819	{
6820	RTMemFree(pShader->pShaderProgram);
6821	memset(pShader, 0, sizeof(*pShader));
6822	pShader->id = SVGA3D_INVALID_ID;
6823	}
6824
6825	return rc;
6826	}
6827
6828	int vmsvga3dShaderDestroy(PVGASTATE pThis, uint32_t cid, uint32_t shid, SVGA3dShaderType type)
6829	{
6830	PVMSVGA3DCONTEXT pContext;
6831	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
6832	AssertReturn(pState, VERR_NO_MEMORY);
6833	PVMSVGA3DSHADER pShader = NULL;
6834	int rc;
6835
6836	Log(("vmsvga3dShaderDestroy cid=%x shid=%x type=%s\n", cid, shid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL"));
6837
6838	if ( cid >= pState->cContexts
6839	\|\| pState->papContexts[cid]->id != cid)
6840	{
6841	Log(("vmsvga3dShaderDestroy invalid context id!\n"));
6842	return VERR_INVALID_PARAMETER;
6843	}
6844	pContext = pState->papContexts[cid];
6845	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6846
6847	if (type == SVGA3D_SHADERTYPE_VS)
6848	{
6849	if ( shid < pContext->cVertexShaders
6850	&& pContext->paVertexShader[shid].id == shid)
6851	{
6852	pShader = &pContext->paVertexShader[shid];
6853	rc = ShaderDestroyVertexShader(pContext->pShaderContext, pShader->u.pVertexShader);
6854	AssertRC(rc);
6855	}
6856	}
6857	else
6858	{
6859	Assert(type == SVGA3D_SHADERTYPE_PS);
6860	if ( shid < pContext->cPixelShaders
6861	&& pContext->paPixelShader[shid].id == shid)
6862	{
6863	pShader = &pContext->paPixelShader[shid];
6864	rc = ShaderDestroyPixelShader(pContext->pShaderContext, pShader->u.pPixelShader);
6865	AssertRC(rc);
6866	}
6867	}
6868
6869	if (pShader)
6870	{
6871	if (pShader->pShaderProgram)
6872	RTMemFree(pShader->pShaderProgram);
6873	memset(pShader, 0, sizeof(*pShader));
6874	pShader->id = SVGA3D_INVALID_ID;
6875	}
6876	else
6877	AssertFailedReturn(VERR_INVALID_PARAMETER);
6878
6879	return VINF_SUCCESS;
6880	}
6881
6882	int vmsvga3dShaderSet(PVGASTATE pThis, PVMSVGA3DCONTEXT pContext, uint32_t cid, SVGA3dShaderType type, uint32_t shid)
6883	{
6884	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
6885	AssertReturn(pState, VERR_NO_MEMORY);
6886	int rc;
6887
6888	Log(("vmsvga3dShaderSet cid=%x type=%s shid=%d\n", cid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", shid));
6889
6890	if ( !pContext
6891	&& cid < pState->cContexts
6892	&& pState->papContexts[cid]->id == cid)
6893	pContext = pState->papContexts[cid];
6894	else if (!pContext)
6895	{
6896	AssertMsgFailed(("cid=%#x cContexts=%#x\n", cid, pState->cContexts));
6897	Log(("vmsvga3dShaderSet invalid context id!\n"));
6898	return VERR_INVALID_PARAMETER;
6899	}
6900	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6901
6902	if (type == SVGA3D_SHADERTYPE_VS)
6903	{
6904	/* Save for vm state save/restore. */
6905	pContext->state.shidVertex = shid;
6906	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_VERTEXSHADER;
6907
6908	if ( shid < pContext->cVertexShaders
6909	&& pContext->paVertexShader[shid].id == shid)
6910	{
6911	PVMSVGA3DSHADER pShader = &pContext->paVertexShader[shid];
6912	Assert(type == pShader->type);
6913
6914	rc = ShaderSetVertexShader(pContext->pShaderContext, pShader->u.pVertexShader);
6915	AssertRCReturn(rc, rc);
6916	}
6917	else
6918	if (shid == SVGA_ID_INVALID)
6919	{
6920	/* Unselect shader. */
6921	rc = ShaderSetVertexShader(pContext->pShaderContext, NULL);
6922	AssertRCReturn(rc, rc);
6923	}
6924	else
6925	AssertFailedReturn(VERR_INVALID_PARAMETER);
6926	}
6927	else
6928	{
6929	/* Save for vm state save/restore. */
6930	pContext->state.shidPixel = shid;
6931	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_PIXELSHADER;
6932
6933	Assert(type == SVGA3D_SHADERTYPE_PS);
6934	if ( shid < pContext->cPixelShaders
6935	&& pContext->paPixelShader[shid].id == shid)
6936	{
6937	PVMSVGA3DSHADER pShader = &pContext->paPixelShader[shid];
6938	Assert(type == pShader->type);
6939
6940	rc = ShaderSetPixelShader(pContext->pShaderContext, pShader->u.pPixelShader);
6941	AssertRCReturn(rc, rc);
6942	}
6943	else
6944	if (shid == SVGA_ID_INVALID)
6945	{
6946	/* Unselect shader. */
6947	rc = ShaderSetPixelShader(pContext->pShaderContext, NULL);
6948	AssertRCReturn(rc, rc);
6949	}
6950	else
6951	AssertFailedReturn(VERR_INVALID_PARAMETER);
6952	}
6953
6954	return VINF_SUCCESS;
6955	}
6956
6957	int vmsvga3dShaderSetConst(PVGASTATE pThis, uint32_t cid, uint32_t reg, SVGA3dShaderType type, SVGA3dShaderConstType ctype, uint32_t cRegisters, uint32_t *pValues)
6958	{
6959	PVMSVGA3DCONTEXT pContext;
6960	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
6961	AssertReturn(pState, VERR_NO_MEMORY);
6962	int rc;
6963
6964	Log(("vmsvga3dShaderSetConst cid=%x reg=%x type=%s cregs=%d ctype=%x\n", cid, reg, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", cRegisters, ctype));
6965
6966	if ( cid >= pState->cContexts
6967	\|\| pState->papContexts[cid]->id != cid)
6968	{
6969	Log(("vmsvga3dShaderSetConst invalid context id!\n"));
6970	return VERR_INVALID_PARAMETER;
6971	}
6972	pContext = pState->papContexts[cid];
6973	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6974
6975	for (uint32_t i = 0; i < cRegisters; i++)
6976	{
6977	#ifdef LOG_ENABLED
6978	switch (ctype)
6979	{
6980	case SVGA3D_CONST_TYPE_FLOAT:
6981	{
6982	float pValuesF = (float )pValues;
6983	Log(("Constant %d: value=%d-%d-%d-%d\n", reg + i, (int)(pValuesF[i4 + 0] 100.0), (int)(pValuesF[i4 + 1] 100.0), (int)(pValuesF[i4 + 2] 100.0), (int)(pValuesF[i4 + 3] 100.0)));
6984	break;
6985	}
6986
6987	case SVGA3D_CONST_TYPE_INT:
6988	Log(("Constant %d: value=%x-%x-%x-%x\n", reg + i, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]));
6989	break;
6990
6991	case SVGA3D_CONST_TYPE_BOOL:
6992	Log(("Constant %d: value=%x-%x-%x-%x\n", reg + i, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]));
6993	break;
6994	}
6995	#endif
6996	vmsvga3dSaveShaderConst(pContext, reg + i, type, ctype, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]);
6997	}
6998
6999	switch (type)
7000	{
7001	case SVGA3D_SHADERTYPE_VS:
7002	switch (ctype)
7003	{
7004	case SVGA3D_CONST_TYPE_FLOAT:
7005	rc = ShaderSetVertexShaderConstantF(pContext->pShaderContext, reg, (const float *)pValues, cRegisters);
7006	break;
7007
7008	case SVGA3D_CONST_TYPE_INT:
7009	rc = ShaderSetVertexShaderConstantI(pContext->pShaderContext, reg, (const int32_t *)pValues, cRegisters);
7010	break;
7011
7012	case SVGA3D_CONST_TYPE_BOOL:
7013	rc = ShaderSetVertexShaderConstantB(pContext->pShaderContext, reg, (const uint8_t *)pValues, cRegisters);
7014	break;
7015
7016	default:
7017	AssertFailedReturn(VERR_INVALID_PARAMETER);
7018	}
7019	AssertRCReturn(rc, rc);
7020	break;
7021
7022	case SVGA3D_SHADERTYPE_PS:
7023	switch (ctype)
7024	{
7025	case SVGA3D_CONST_TYPE_FLOAT:
7026	rc = ShaderSetPixelShaderConstantF(pContext->pShaderContext, reg, (const float *)pValues, cRegisters);
7027	break;
7028
7029	case SVGA3D_CONST_TYPE_INT:
7030	rc = ShaderSetPixelShaderConstantI(pContext->pShaderContext, reg, (const int32_t *)pValues, cRegisters);
7031	break;
7032
7033	case SVGA3D_CONST_TYPE_BOOL:
7034	rc = ShaderSetPixelShaderConstantB(pContext->pShaderContext, reg, (const uint8_t *)pValues, cRegisters);
7035	break;
7036
7037	default:
7038	AssertFailedReturn(VERR_INVALID_PARAMETER);
7039	}
7040	AssertRCReturn(rc, rc);
7041	break;
7042
7043	default:
7044	AssertFailedReturn(VERR_INVALID_PARAMETER);
7045	}
7046
7047	return VINF_SUCCESS;
7048	}
7049
7050	int vmsvga3dOcclusionQueryCreate(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
7051	{
7052	AssertReturn(pState->ext.glGenQueries, VERR_NOT_SUPPORTED);
7053	GLuint idQuery = 0;
7054	pState->ext.glGenQueries(1, &idQuery);
7055	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7056	AssertReturn(idQuery, VERR_INTERNAL_ERROR);
7057	pContext->occlusion.idQuery = idQuery;
7058	return VINF_SUCCESS;
7059	}
7060
7061	int vmsvga3dOcclusionQueryDelete(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
7062	{
7063	AssertReturn(pState->ext.glDeleteQueries, VERR_NOT_SUPPORTED);
7064	if (pContext->occlusion.idQuery)
7065	{
7066	pState->ext.glDeleteQueries(1, &pContext->occlusion.idQuery);
7067	}
7068	return VINF_SUCCESS;
7069	}
7070
7071	int vmsvga3dOcclusionQueryBegin(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
7072	{
7073	AssertReturn(pState->ext.glBeginQuery, VERR_NOT_SUPPORTED);
7074	pState->ext.glBeginQuery(GL_ANY_SAMPLES_PASSED, pContext->occlusion.idQuery);
7075	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7076	return VINF_SUCCESS;
7077	}
7078
7079	int vmsvga3dOcclusionQueryEnd(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
7080	{
7081	RT_NOREF(pContext);
7082	AssertReturn(pState->ext.glEndQuery, VERR_NOT_SUPPORTED);
7083	pState->ext.glEndQuery(GL_ANY_SAMPLES_PASSED);
7084	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7085	return VINF_SUCCESS;
7086	}
7087
7088	int vmsvga3dOcclusionQueryGetData(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, uint32_t *pu32Pixels)
7089	{
7090	AssertReturn(pState->ext.glGetQueryObjectuiv, VERR_NOT_SUPPORTED);
7091	GLuint pixels = 0;
7092	pState->ext.glGetQueryObjectuiv(pContext->occlusion.idQuery, GL_QUERY_RESULT, &pixels);
7093	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7094
7095	*pu32Pixels = (uint32_t)pixels;
7096	return VINF_SUCCESS;
7097	}

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source: vbox/trunk/src/VBox/Devices/Graphics/DevVGA-SVGA3d-ogl.cpp@ 73390

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