DevVGA-SVGA3d-ogl.cpp@ 81428

Last change on this file since 81428 was 81219, checked in by vboxsync, 5 years ago
Devices/Graphics: fixed the wrong translation of BlendOp in the OpenGL backend
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 257.2 KB

Line
1	/* $Id: DevVGA-SVGA3d-ogl.cpp 81219 2019-10-10 17:59:14Z vboxsync $ */
2	/** @file
3	* DevVMWare - VMWare SVGA device
4	*/
5
6	/*
7	* Copyright (C) 2013-2019 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	/* Enable to disassemble defined shaders. (Windows host only) */
23	#if defined(RT_OS_WINDOWS) && defined(DEBUG) && 0 /* Disabled as we don't have the DirectX SDK avaible atm. */
24	# define DUMP_SHADER_DISASSEMBLY
25	#endif
26	#ifdef DEBUG_bird
27	//# define RTMEM_WRAP_TO_EF_APIS
28	#endif
29	#define LOG_GROUP LOG_GROUP_DEV_VMSVGA
30	#include <VBox/vmm/pdmdev.h>
31	#include <VBox/version.h>
32	#include <VBox/err.h>
33	#include <VBox/log.h>
34	#include <VBox/vmm/pgm.h>
35	#include <VBox/AssertGuest.h>
36
37	#include <iprt/assert.h>
38	#include <iprt/semaphore.h>
39	#include <iprt/uuid.h>
40	#include <iprt/mem.h>
41
42	#include <VBoxVideo.h> /* required by DevVGA.h */
43
44	/* should go BEFORE any other DevVGA include to make all DevVGA.h config defines be visible */
45	#include "DevVGA.h"
46
47	#include "DevVGA-SVGA.h"
48	#include "DevVGA-SVGA3d.h"
49	#include "DevVGA-SVGA3d-internal.h"
50
51	#ifdef DUMP_SHADER_DISASSEMBLY
52	# include <d3dx9shader.h>
53	#endif
54
55	#include <stdlib.h>
56	#include <math.h>
57	#include <float.h> /* FLT_MIN */
58
59
60	/*********************************************************************************************************************************
61	* Defined Constants And Macros *
62	*********************************************************************************************************************************/
63	#ifndef VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE
64	# define VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE 1.0
65	#endif
66
67	#ifdef VMSVGA3D_DYNAMIC_LOAD
68	# define OGLGETPROCADDRESS glLdrGetProcAddress
69	#else
70	#ifdef RT_OS_WINDOWS
71	# define OGLGETPROCADDRESS MyWinGetProcAddress
72	DECLINLINE(PROC) MyWinGetProcAddress(const char *pszSymbol)
73	{
74	/* Khronos: [on failure] "some implementations will return other values. 1, 2, and 3 are used, as well as -1". */
75	PROC p = wglGetProcAddress(pszSymbol);
76	if (RT_VALID_PTR(p))
77	return p;
78	return 0;
79	}
80	#elif defined(RT_OS_DARWIN)
81	# include <dlfcn.h>
82	# define OGLGETPROCADDRESS MyNSGLGetProcAddress
83	/** Resolves an OpenGL symbol. */
84	static void MyNSGLGetProcAddress(const char pszSymbol)
85	{
86	/* Another copy in shaderapi.c. */
87	static void *s_pvImage = NULL;
88	if (s_pvImage == NULL)
89	s_pvImage = dlopen("/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL", RTLD_LAZY);
90	return s_pvImage ? dlsym(s_pvImage, pszSymbol) : NULL;
91	}
92
93	#else
94	# define OGLGETPROCADDRESS(x) glXGetProcAddress((const GLubyte *)x)
95	#endif
96	#endif
97
98	/* Invert y-coordinate for OpenGL's bottom left origin. */
99	#define D3D_TO_OGL_Y_COORD(ptrSurface, y_coordinate) (ptrSurface->pMipmapLevels[0].mipmapSize.height - (y_coordinate))
100	#define D3D_TO_OGL_Y_COORD_MIPLEVEL(ptrMipLevel, y_coordinate) (ptrMipLevel->size.height - (y_coordinate))
101
102	/**
103	* Macro for doing something and then checking for errors during initialization.
104	* Uses AssertLogRelMsg.
105	*/
106	#define VMSVGA3D_INIT_CHECKED(a_Expr) \
107	do \
108	{ \
109	a_Expr; \
110	GLenum iGlError = glGetError(); \
111	AssertLogRelMsg(iGlError == GL_NO_ERROR, ("VMSVGA3d: %s -> %#x\n", #a_Expr, iGlError)); \
112	} while (0)
113
114	/**
115	* Macro for doing something and then checking for errors during initialization,
116	* doing the same in the other context when enabled.
117	*
118	* This will try both profiles in dual profile builds. Caller must be in the
119	* default context.
120	*
121	* Uses AssertLogRelMsg to indicate trouble.
122	*/
123	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
124	# define VMSVGA3D_INIT_CHECKED_BOTH(a_pState, a_pContext, a_pOtherCtx, a_Expr) \
125	do \
126	{ \
127	for (uint32_t i = 0; i < 64; i++) if (glGetError() == GL_NO_ERROR) break; Assert(glGetError() == GL_NO_ERROR); \
128	a_Expr; \
129	GLenum iGlError = glGetError(); \
130	if (iGlError != GL_NO_ERROR) \
131	{ \
132	VMSVGA3D_SET_CURRENT_CONTEXT(a_pState, a_pOtherCtx); \
133	for (uint32_t i = 0; i < 64; i++) if (glGetError() == GL_NO_ERROR) break; Assert(glGetError() == GL_NO_ERROR); \
134	a_Expr; \
135	GLenum iGlError2 = glGetError(); \
136	AssertLogRelMsg(iGlError2 == GL_NO_ERROR, ("VMSVGA3d: %s -> %#x / %#x\n", #a_Expr, iGlError, iGlError2)); \
137	VMSVGA3D_SET_CURRENT_CONTEXT(a_pState, a_pContext); \
138	} \
139	} while (0)
140	#else
141	# define VMSVGA3D_INIT_CHECKED_BOTH(a_pState, a_pContext, a_pOtherCtx, a_Expr) VMSVGA3D_INIT_CHECKED(a_Expr)
142	#endif
143
144
145	/*********************************************************************************************************************************
146	* Global Variables *
147	*********************************************************************************************************************************/
148	/* Define the default light parameters as specified by MSDN. */
149	/** @todo move out; fetched from Wine */
150	const SVGA3dLightData vmsvga3d_default_light =
151	{
152	SVGA3D_LIGHTTYPE_DIRECTIONAL, /* type */
153	false, /* inWorldSpace */
154	{ 1.0f, 1.0f, 1.0f, 0.0f }, /* diffuse r,g,b,a */
155	{ 0.0f, 0.0f, 0.0f, 0.0f }, /* specular r,g,b,a */
156	{ 0.0f, 0.0f, 0.0f, 0.0f }, /* ambient r,g,b,a, */
157	{ 0.0f, 0.0f, 0.0f }, /* position x,y,z */
158	{ 0.0f, 0.0f, 1.0f }, /* direction x,y,z */
159	0.0f, /* range */
160	0.0f, /* falloff */
161	0.0f, 0.0f, 0.0f, /* attenuation 0,1,2 */
162	0.0f, /* theta */
163	0.0f /* phi */
164	};
165
166
167	/*********************************************************************************************************************************
168	* Internal Functions *
169	*********************************************************************************************************************************/
170	static int vmsvga3dContextDestroyOgl(PVGASTATE pThis, PVMSVGA3DCONTEXT pContext, uint32_t cid);
171	static void vmsvgaColor2GLFloatArray(uint32_t color, GLfloat pRed, GLfloat pGreen, GLfloat pBlue, GLfloat pAlpha);
172
173	/* Generated by VBoxDef2LazyLoad from the VBoxSVGA3D.def and VBoxSVGA3DObjC.def files. */
174	extern "C" int ExplicitlyLoadVBoxSVGA3D(bool fResolveAllImports, PRTERRINFO pErrInfo);
175
176
177	/**
178	* Checks if the given OpenGL extension is supported.
179	*
180	* @returns true if supported, false if not.
181	* @param pState The VMSVGA3d state.
182	* @param rsMinGLVersion The OpenGL version that introduced this feature
183	* into the core.
184	* @param pszWantedExtension The name of the OpenGL extension we want padded
185	* with one space at each end.
186	* @remarks Init time only.
187	*/
188	static bool vmsvga3dCheckGLExtension(PVMSVGA3DSTATE pState, float rsMinGLVersion, const char *pszWantedExtension)
189	{
190	RT_NOREF(rsMinGLVersion);
191	/* check padding. */
192	Assert(pszWantedExtension[0] == ' ');
193	Assert(pszWantedExtension[1] != ' ');
194	Assert(strchr(&pszWantedExtension[1], ' ') + 1 == strchr(pszWantedExtension, '\0'));
195
196	/* Look it up. */
197	bool fRet = false;
198	if (strstr(pState->pszExtensions, pszWantedExtension))
199	fRet = true;
200
201	/* Temporarily. Later start if (rsMinGLVersion != 0.0 && fActualGLVersion >= rsMinGLVersion) return true; */
202	#ifdef RT_OS_DARWIN
203	AssertMsg( rsMinGLVersion == 0.0
204	\|\| fRet == (pState->rsGLVersion >= rsMinGLVersion)
205	\|\| VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE == 2.1,
206	("%s actual:%d min:%d fRet=%d\n",
207	pszWantedExtension, (int)(pState->rsGLVersion * 10), (int)(rsMinGLVersion * 10), fRet));
208	#else
209	AssertMsg(rsMinGLVersion == 0.0 \|\| fRet == (pState->rsGLVersion >= rsMinGLVersion),
210	("%s actual:%d min:%d fRet=%d\n",
211	pszWantedExtension, (int)(pState->rsGLVersion * 10), (int)(rsMinGLVersion * 10), fRet));
212	#endif
213	return fRet;
214	}
215
216
217	/**
218	* Outputs GL_EXTENSIONS list to the release log.
219	*/
220	static void vmsvga3dLogRelExtensions(const char pszPrefix, const char pszExtensions)
221	{
222	/* OpenGL 3.0 interface (glGetString(GL_EXTENSIONS) return NULL). */
223	bool fBuffered = RTLogRelSetBuffering(true);
224
225	/*
226	* Determin the column widths first.
227	*/
228	size_t acchWidths[4] = { 1, 1, 1, 1 };
229	uint32_t i;
230	const char *psz = pszExtensions;
231	for (i = 0; ; i++)
232	{
233	while (*psz == ' ')
234	psz++;
235	if (!*psz)
236	break;
237
238	const char *pszEnd = strchr(psz, ' ');
239	AssertBreak(pszEnd);
240	size_t cch = pszEnd - psz;
241
242	uint32_t iColumn = i % RT_ELEMENTS(acchWidths);
243	if (acchWidths[iColumn] < cch)
244	acchWidths[iColumn] = cch;
245
246	psz = pszEnd;
247	}
248
249	/*
250	* Output it.
251	*/
252	LogRel(("VMSVGA3d: %sOpenGL extensions (%d):", pszPrefix, i));
253	psz = pszExtensions;
254	for (i = 0; ; i++)
255	{
256	while (*psz == ' ')
257	psz++;
258	if (!*psz)
259	break;
260
261	const char *pszEnd = strchr(psz, ' ');
262	AssertBreak(pszEnd);
263	size_t cch = pszEnd - psz;
264
265	uint32_t iColumn = i % RT_ELEMENTS(acchWidths);
266	if (iColumn == 0)
267	LogRel(("\nVMSVGA3d: %-.s", acchWidths[iColumn], cch, psz));
268	else if (iColumn != RT_ELEMENTS(acchWidths) - 1)
269	LogRel((" %-.s", acchWidths[iColumn], cch, psz));
270	else
271	LogRel((" %.*s", cch, psz));
272
273	psz = pszEnd;
274	}
275
276	RTLogRelSetBuffering(fBuffered);
277	LogRel(("\n"));
278	}
279
280	/**
281	* Gathers the GL_EXTENSIONS list, storing it as a space padded list at
282	* @a ppszExtensions.
283	*
284	* @returns VINF_SUCCESS or VERR_NO_STR_MEMORY
285	* @param ppszExtensions Pointer to the string pointer. Free with RTStrFree.
286	* @param fGLProfileVersion The OpenGL profile version.
287	*/
288	static int vmsvga3dGatherExtensions(char **ppszExtensions, float fGLProfileVersion)
289	{
290	int rc;
291	*ppszExtensions = NULL;
292
293	/*
294	* Try the old glGetString interface first.
295	*/
296	const char pszExtensions = (const char )glGetString(GL_EXTENSIONS);
297	if (pszExtensions)
298	{
299	rc = RTStrAAppendExN(ppszExtensions, 3, " ", (size_t)1, pszExtensions, RTSTR_MAX, " ", (size_t)1);
300	AssertLogRelRCReturn(rc, rc);
301	}
302	else
303	{
304	/*
305	* The new interface where each extension string is retrieved separately.
306	* Note! Cannot use VMSVGA3D_INIT_CHECKED_GL_GET_INTEGER_VALUE here because
307	* the above GL_EXTENSIONS error lingers on darwin. sucks.
308	*/
309	#ifndef GL_NUM_EXTENSIONS
310	# define GL_NUM_EXTENSIONS 0x821D
311	#endif
312	GLint cExtensions = 1024;
313	glGetIntegerv(GL_NUM_EXTENSIONS, &cExtensions);
314	Assert(cExtensions != 1024);
315
316	PFNGLGETSTRINGIPROC pfnGlGetStringi = (PFNGLGETSTRINGIPROC)OGLGETPROCADDRESS("glGetStringi");
317	AssertLogRelReturn(pfnGlGetStringi, VERR_NOT_SUPPORTED);
318
319	rc = RTStrAAppend(ppszExtensions, " ");
320	for (GLint i = 0; RT_SUCCESS(rc) && i < cExtensions; i++)
321	{
322	const char pszExt = (const char )pfnGlGetStringi(GL_EXTENSIONS, i);
323	if (pszExt)
324	rc = RTStrAAppendExN(ppszExtensions, 2, pfnGlGetStringi(GL_EXTENSIONS, i), RTSTR_MAX, " ", (size_t)1);
325	}
326	AssertRCReturn(rc, rc);
327	}
328
329	#if 1
330	/*
331	* Add extensions promoted into the core OpenGL profile.
332	*/
333	static const struct
334	{
335	float fGLVersion;
336	const char *pszzExtensions;
337	} s_aPromotedExtensions[] =
338	{
339	{
340	1.1f,
341	" GL_EXT_vertex_array \0"
342	" GL_EXT_polygon_offset \0"
343	" GL_EXT_blend_logic_op \0"
344	" GL_EXT_texture \0"
345	" GL_EXT_copy_texture \0"
346	" GL_EXT_subtexture \0"
347	" GL_EXT_texture_object \0"
348	" GL_ARB_framebuffer_object \0"
349	" GL_ARB_map_buffer_range \0"
350	" GL_ARB_vertex_array_object \0"
351	"\0"
352	},
353	{
354	1.2f,
355	" EXT_texture3D \0"
356	" EXT_bgra \0"
357	" EXT_packed_pixels \0"
358	" EXT_rescale_normal \0"
359	" EXT_separate_specular_color \0"
360	" SGIS_texture_edge_clamp \0"
361	" SGIS_texture_lod \0"
362	" EXT_draw_range_elements \0"
363	"\0"
364	},
365	{
366	1.3f,
367	" GL_ARB_texture_compression \0"
368	" GL_ARB_texture_cube_map \0"
369	" GL_ARB_multisample \0"
370	" GL_ARB_multitexture \0"
371	" GL_ARB_texture_env_add \0"
372	" GL_ARB_texture_env_combine \0"
373	" GL_ARB_texture_env_dot3 \0"
374	" GL_ARB_texture_border_clamp \0"
375	" GL_ARB_transpose_matrix \0"
376	"\0"
377	},
378	{
379	1.5f,
380	" GL_SGIS_generate_mipmap \0"
381	/" GL_NV_blend_equare \0"/
382	" GL_ARB_depth_texture \0"
383	" GL_ARB_shadow \0"
384	" GL_EXT_fog_coord \0"
385	" GL_EXT_multi_draw_arrays \0"
386	" GL_ARB_point_parameters \0"
387	" GL_EXT_secondary_color \0"
388	" GL_EXT_blend_func_separate \0"
389	" GL_EXT_stencil_wrap \0"
390	" GL_ARB_texture_env_crossbar \0"
391	" GL_EXT_texture_lod_bias \0"
392	" GL_ARB_texture_mirrored_repeat \0"
393	" GL_ARB_window_pos \0"
394	"\0"
395	},
396	{
397	1.6f,
398	" GL_ARB_vertex_buffer_object \0"
399	" GL_ARB_occlusion_query \0"
400	" GL_EXT_shadow_funcs \0"
401	},
402	{
403	2.0f,
404	" GL_ARB_shader_objects \0" /??/
405	" GL_ARB_vertex_shader \0" /??/
406	" GL_ARB_fragment_shader \0" /??/
407	" GL_ARB_shading_language_100 \0" /??/
408	" GL_ARB_draw_buffers \0"
409	" GL_ARB_texture_non_power_of_two \0"
410	" GL_ARB_point_sprite \0"
411	" GL_ATI_separate_stencil \0"
412	" GL_EXT_stencil_two_side \0"
413	"\0"
414	},
415	{
416	2.1f,
417	" GL_ARB_pixel_buffer_object \0"
418	" GL_EXT_texture_sRGB \0"
419	"\0"
420	},
421	{
422	3.0f,
423	" GL_ARB_framebuffer_object \0"
424	" GL_ARB_map_buffer_range \0"
425	" GL_ARB_vertex_array_object \0"
426	"\0"
427	},
428	{
429	3.1f,
430	" GL_ARB_copy_buffer \0"
431	" GL_ARB_uniform_buffer_object \0"
432	"\0"
433	},
434	{
435	3.2f,
436	" GL_ARB_vertex_array_bgra \0"
437	" GL_ARB_draw_elements_base_vertex \0"
438	" GL_ARB_fragment_coord_conventions \0"
439	" GL_ARB_provoking_vertex \0"
440	" GL_ARB_seamless_cube_map \0"
441	" GL_ARB_texture_multisample \0"
442	" GL_ARB_depth_clamp \0"
443	" GL_ARB_sync \0"
444	" GL_ARB_geometry_shader4 \0" /??/
445	"\0"
446	},
447	{
448	3.3f,
449	" GL_ARB_blend_func_extended \0"
450	" GL_ARB_sampler_objects \0"
451	" GL_ARB_explicit_attrib_location \0"
452	" GL_ARB_occlusion_query2 \0"
453	" GL_ARB_shader_bit_encoding \0"
454	" GL_ARB_texture_rgb10_a2ui \0"
455	" GL_ARB_texture_swizzle \0"
456	" GL_ARB_timer_query \0"
457	" GL_ARB_vertex_type_2_10_10_10_rev \0"
458	"\0"
459	},
460	{
461	4.0f,
462	" GL_ARB_texture_query_lod \0"
463	" GL_ARB_draw_indirect \0"
464	" GL_ARB_gpu_shader5 \0"
465	" GL_ARB_gpu_shader_fp64 \0"
466	" GL_ARB_shader_subroutine \0"
467	" GL_ARB_tessellation_shader \0"
468	" GL_ARB_texture_buffer_object_rgb32 \0"
469	" GL_ARB_texture_cube_map_array \0"
470	" GL_ARB_texture_gather \0"
471	" GL_ARB_transform_feedback2 \0"
472	" GL_ARB_transform_feedback3 \0"
473	"\0"
474	},
475	{
476	4.1f,
477	" GL_ARB_ES2_compatibility \0"
478	" GL_ARB_get_program_binary \0"
479	" GL_ARB_separate_shader_objects \0"
480	" GL_ARB_shader_precision \0"
481	" GL_ARB_vertex_attrib_64bit \0"
482	" GL_ARB_viewport_array \0"
483	"\0"
484	}
485	};
486
487	uint32_t cPromoted = 0;
488	for (uint32_t i = 0; i < RT_ELEMENTS(s_aPromotedExtensions) && s_aPromotedExtensions[i].fGLVersion <= fGLProfileVersion; i++)
489	{
490	const char *pszExt = s_aPromotedExtensions[i].pszzExtensions;
491	while (*pszExt)
492	{
493	# ifdef VBOX_STRICT
494	size_t cchExt = strlen(pszExt);
495	Assert(cchExt > 3);
496	Assert(pszExt[0] == ' ');
497	Assert(pszExt[1] != ' ');
498	Assert(pszExt[cchExt - 2] != ' ');
499	Assert(pszExt[cchExt - 1] == ' ');
500	# endif
501
502	if (strstr(*ppszExtensions, pszExt) == NULL)
503	{
504	if (cPromoted++ == 0)
505	{
506	rc = RTStrAAppend(ppszExtensions, " <promoted-extensions:> <promoted-extensions:> <promoted-extensions:> ");
507	AssertRCReturn(rc, rc);
508	}
509
510	rc = RTStrAAppend(ppszExtensions, pszExt);
511	AssertRCReturn(rc, rc);
512	}
513
514	pszExt = strchr(pszExt, '\0') + 1;
515	}
516	}
517	#endif
518
519	return VINF_SUCCESS;
520	}
521
522	/** Check whether this is an Intel GL driver.
523	*
524	* @returns true if this seems to be some Intel graphics.
525	*/
526	static bool vmsvga3dIsVendorIntel(void)
527	{
528	return RTStrNICmp((char *)glGetString(GL_VENDOR), "Intel", 5) == 0;
529	}
530
531	/**
532	* @interface_method_impl{VBOXVMSVGASHADERIF,pfnSwitchInitProfile}
533	*/
534	static DECLCALLBACK(void) vmsvga3dShaderIfSwitchInitProfile(PVBOXVMSVGASHADERIF pThis, bool fOtherProfile)
535	{
536	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
537	PVMSVGA3DSTATE pState = RT_FROM_MEMBER(pThis, VMSVGA3DSTATE, ShaderIf);
538	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pState->papContexts[fOtherProfile ? 2 : 1]);
539	#else
540	NOREF(pThis);
541	NOREF(fOtherProfile);
542	#endif
543	}
544
545
546	/**
547	* @interface_method_impl{VBOXVMSVGASHADERIF,pfnGetNextExtension}
548	*/
549	static DECLCALLBACK(bool) vmsvga3dShaderIfGetNextExtension(PVBOXVMSVGASHADERIF pThis, void **ppvEnumCtx,
550	char *pszBuf, size_t cbBuf, bool fOtherProfile)
551	{
552	PVMSVGA3DSTATE pState = RT_FROM_MEMBER(pThis, VMSVGA3DSTATE, ShaderIf);
553	const char pszCur = ppvEnumCtx ? (const char )ppvEnumCtx
554	: fOtherProfile ? pState->pszOtherExtensions : pState->pszExtensions;
555	while (*pszCur == ' ')
556	pszCur++;
557	if (!*pszCur)
558	return false;
559
560	const char *pszEnd = strchr(pszCur, ' ');
561	AssertReturn(pszEnd, false);
562	size_t cch = pszEnd - pszCur;
563	if (cch < cbBuf)
564	{
565	memcpy(pszBuf, pszCur, cch);
566	pszBuf[cch] = '\0';
567	}
568	else if (cbBuf > 0)
569	{
570	memcpy(pszBuf, "<overflow>", RT_MIN(sizeof("<overflow>"), cbBuf));
571	pszBuf[cbBuf - 1] = '\0';
572	}
573
574	ppvEnumCtx = (void )pszEnd;
575	return true;
576	}
577
578
579	/**
580	* Initializes the VMSVGA3D state during VGA device construction.
581	*
582	* Failure are generally not fatal, 3D support will just be disabled.
583	*
584	* @returns VBox status code.
585	* @param pThis The VGA device state where svga.p3dState will be modified.
586	*/
587	int vmsvga3dInit(PVGASTATE pThis)
588	{
589	int rc;
590
591	AssertCompile(GL_TRUE == 1);
592	AssertCompile(GL_FALSE == 0);
593
594	#ifdef VMSVGA3D_DYNAMIC_LOAD
595	rc = glLdrInit(pThis->pDevInsR3);
596	if (RT_FAILURE(rc))
597	{
598	LogRel(("VMSVGA3d: Error loading OpenGL library and resolving necessary functions: %Rrc\n", rc));
599	return rc;
600	}
601	#endif
602
603	/*
604	* Load and resolve imports from the external shared libraries.
605	*/
606	RTERRINFOSTATIC ErrInfo;
607	rc = ExplicitlyLoadVBoxSVGA3D(true /fResolveAllImports/, RTErrInfoInitStatic(&ErrInfo));
608	if (RT_FAILURE(rc))
609	{
610	LogRel(("VMSVGA3d: Error loading VBoxSVGA3D and resolving necessary functions: %Rrc - %s\n", rc, ErrInfo.Core.pszMsg));
611	return rc;
612	}
613	#ifdef RT_OS_DARWIN
614	rc = ExplicitlyLoadVBoxSVGA3DObjC(true /fResolveAllImports/, RTErrInfoInitStatic(&ErrInfo));
615	if (RT_FAILURE(rc))
616	{
617	LogRel(("VMSVGA3d: Error loading VBoxSVGA3DObjC and resolving necessary functions: %Rrc - %s\n", rc, ErrInfo.Core.pszMsg));
618	return rc;
619	}
620	#endif
621
622	/*
623	* Allocate the state.
624	*/
625	pThis->svga.p3dState = (PVMSVGA3DSTATE)RTMemAllocZ(sizeof(VMSVGA3DSTATE));
626	AssertReturn(pThis->svga.p3dState, VERR_NO_MEMORY);
627
628	#ifdef RT_OS_WINDOWS
629	/* Create event semaphore and async IO thread. */
630	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
631	rc = RTSemEventCreate(&pState->WndRequestSem);
632	if (RT_SUCCESS(rc))
633	{
634	rc = RTThreadCreate(&pState->pWindowThread, vmsvga3dWindowThread, pState->WndRequestSem, 0, RTTHREADTYPE_GUI, 0,
635	"VMSVGA3DWND");
636	if (RT_SUCCESS(rc))
637	return VINF_SUCCESS;
638
639	/* bail out. */
640	LogRel(("VMSVGA3d: RTThreadCreate failed: %Rrc\n", rc));
641	RTSemEventDestroy(pState->WndRequestSem);
642	}
643	else
644	LogRel(("VMSVGA3d: RTSemEventCreate failed: %Rrc\n", rc));
645	RTMemFree(pThis->svga.p3dState);
646	pThis->svga.p3dState = NULL;
647	return rc;
648	#else
649	return VINF_SUCCESS;
650	#endif
651	}
652
653	static int vmsvga3dLoadGLFunctions(PVMSVGA3DSTATE pState)
654	{
655	/* A strict approach to get a proc address as recommended by Khronos:
656	* - "If the function is a core OpenGL function, then we need to check the OpenGL version".
657	* - "If the function is an extension, we need to check to see if the extension is supported."
658	*/
659
660	/* Get a function address, return VERR_NOT_IMPLEMENTED on failure. */
661	#define GLGETPROC_(ProcType, ProcName, NameSuffix) do { \
662	pState->ext.ProcName = (ProcType)OGLGETPROCADDRESS(#ProcName NameSuffix); \
663	AssertLogRelMsgReturn(pState->ext.ProcName, (#ProcName NameSuffix " missing"), VERR_NOT_IMPLEMENTED); \
664	} while(0)
665
666	/* Get an optional function address. LogRel on failure. */
667	#define GLGETPROCOPT_(ProcType, ProcName, NameSuffix) do { \
668	pState->ext.ProcName = (ProcType)OGLGETPROCADDRESS(#ProcName NameSuffix); \
669	if (!pState->ext.ProcName) \
670	{ \
671	LogRel(("VMSVGA3d: missing optional %s\n", #ProcName NameSuffix)); \
672	AssertFailed(); \
673	} \
674	} while(0)
675
676	/* OpenGL 2.0 or earlier core. Do not bother with extensions. */
677	GLGETPROC_(PFNGLGENQUERIESPROC , glGenQueries, "");
678	GLGETPROC_(PFNGLDELETEQUERIESPROC , glDeleteQueries, "");
679	GLGETPROC_(PFNGLBEGINQUERYPROC , glBeginQuery, "");
680	GLGETPROC_(PFNGLENDQUERYPROC , glEndQuery, "");
681	GLGETPROC_(PFNGLGETQUERYOBJECTUIVPROC , glGetQueryObjectuiv, "");
682	GLGETPROC_(PFNGLTEXIMAGE3DPROC , glTexImage3D, "");
683	GLGETPROC_(PFNGLTEXSUBIMAGE3DPROC , glTexSubImage3D, "");
684	GLGETPROC_(PFNGLCOMPRESSEDTEXIMAGE2DPROC , glCompressedTexImage2D, "");
685	GLGETPROC_(PFNGLCOMPRESSEDTEXIMAGE3DPROC , glCompressedTexImage3D, "");
686	GLGETPROC_(PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC , glCompressedTexSubImage2D, "");
687	GLGETPROC_(PFNGLCOMPRESSEDTEXSUBIMAGE3DPROC , glCompressedTexSubImage3D, "");
688	GLGETPROC_(PFNGLPOINTPARAMETERFPROC , glPointParameterf, "");
689	GLGETPROC_(PFNGLBLENDEQUATIONSEPARATEPROC , glBlendEquationSeparate, "");
690	GLGETPROC_(PFNGLBLENDFUNCSEPARATEPROC , glBlendFuncSeparate, "");
691	GLGETPROC_(PFNGLSTENCILOPSEPARATEPROC , glStencilOpSeparate, "");
692	GLGETPROC_(PFNGLSTENCILFUNCSEPARATEPROC , glStencilFuncSeparate, "");
693	GLGETPROC_(PFNGLBINDBUFFERPROC , glBindBuffer, "");
694	GLGETPROC_(PFNGLDELETEBUFFERSPROC , glDeleteBuffers, "");
695	GLGETPROC_(PFNGLGENBUFFERSPROC , glGenBuffers, "");
696	GLGETPROC_(PFNGLBUFFERDATAPROC , glBufferData, "");
697	GLGETPROC_(PFNGLMAPBUFFERPROC , glMapBuffer, "");
698	GLGETPROC_(PFNGLUNMAPBUFFERPROC , glUnmapBuffer, "");
699	GLGETPROC_(PFNGLENABLEVERTEXATTRIBARRAYPROC , glEnableVertexAttribArray, "");
700	GLGETPROC_(PFNGLDISABLEVERTEXATTRIBARRAYPROC , glDisableVertexAttribArray, "");
701	GLGETPROC_(PFNGLVERTEXATTRIBPOINTERPROC , glVertexAttribPointer, "");
702	GLGETPROC_(PFNGLACTIVETEXTUREPROC , glActiveTexture, "");
703	/* glGetProgramivARB determines implementation limits for the program
704	* target (GL_FRAGMENT_PROGRAM_ARB, GL_VERTEX_PROGRAM_ARB).
705	* It differs from glGetProgramiv, which returns a parameter from a program object.
706	*/
707	GLGETPROC_(PFNGLGETPROGRAMIVARBPROC , glGetProgramivARB, "");
708	GLGETPROC_(PFNGLFOGCOORDPOINTERPROC , glFogCoordPointer, "");
709	#if VBOX_VMSVGA3D_GL_HACK_LEVEL < 0x102
710	GLGETPROC_(PFNGLBLENDCOLORPROC , glBlendColor, "");
711	GLGETPROC_(PFNGLBLENDEQUATIONPROC , glBlendEquation, "");
712	#endif
713	#if VBOX_VMSVGA3D_GL_HACK_LEVEL < 0x103
714	GLGETPROC_(PFNGLCLIENTACTIVETEXTUREPROC , glClientActiveTexture, "");
715	#endif
716
717	/* OpenGL 3.0 core, GL_ARB_instanced_arrays. Same functions names in the ARB and core specs. */
718	if ( pState->rsGLVersion >= 3.0f
719	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_framebuffer_object "))
720	{
721	GLGETPROC_(PFNGLISRENDERBUFFERPROC , glIsRenderbuffer, "");
722	GLGETPROC_(PFNGLBINDRENDERBUFFERPROC , glBindRenderbuffer, "");
723	GLGETPROC_(PFNGLDELETERENDERBUFFERSPROC , glDeleteRenderbuffers, "");
724	GLGETPROC_(PFNGLGENRENDERBUFFERSPROC , glGenRenderbuffers, "");
725	GLGETPROC_(PFNGLRENDERBUFFERSTORAGEPROC , glRenderbufferStorage, "");
726	GLGETPROC_(PFNGLGETRENDERBUFFERPARAMETERIVPROC , glGetRenderbufferParameteriv, "");
727	GLGETPROC_(PFNGLISFRAMEBUFFERPROC , glIsFramebuffer, "");
728	GLGETPROC_(PFNGLBINDFRAMEBUFFERPROC , glBindFramebuffer, "");
729	GLGETPROC_(PFNGLDELETEFRAMEBUFFERSPROC , glDeleteFramebuffers, "");
730	GLGETPROC_(PFNGLGENFRAMEBUFFERSPROC , glGenFramebuffers, "");
731	GLGETPROC_(PFNGLCHECKFRAMEBUFFERSTATUSPROC , glCheckFramebufferStatus, "");
732	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE1DPROC , glFramebufferTexture1D, "");
733	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE2DPROC , glFramebufferTexture2D, "");
734	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE3DPROC , glFramebufferTexture3D, "");
735	GLGETPROC_(PFNGLFRAMEBUFFERRENDERBUFFERPROC , glFramebufferRenderbuffer, "");
736	GLGETPROC_(PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC , glGetFramebufferAttachmentParameteriv, "");
737	GLGETPROC_(PFNGLGENERATEMIPMAPPROC , glGenerateMipmap, "");
738	GLGETPROC_(PFNGLBLITFRAMEBUFFERPROC , glBlitFramebuffer, "");
739	GLGETPROC_(PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC , glRenderbufferStorageMultisample, "");
740	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURELAYERPROC , glFramebufferTextureLayer, "");
741	}
742
743	/* OpenGL 3.1 core, GL_ARB_draw_instanced, GL_EXT_draw_instanced. */
744	if (pState->rsGLVersion >= 3.1f)
745	{
746	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "");
747	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "");
748	}
749	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_draw_instanced "))
750	{
751	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "ARB");
752	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "ARB");
753	}
754	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_draw_instanced "))
755	{
756	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "EXT");
757	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "EXT");
758	}
759
760	/* OpenGL 3.2 core, GL_ARB_draw_elements_base_vertex. Same functions names in the ARB and core specs. */
761	if ( pState->rsGLVersion >= 3.2f
762	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_draw_elements_base_vertex "))
763	{
764	GLGETPROC_(PFNGLDRAWELEMENTSBASEVERTEXPROC , glDrawElementsBaseVertex, "");
765	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC , glDrawElementsInstancedBaseVertex, "");
766	}
767
768	/* Optional. OpenGL 3.2 core, GL_ARB_provoking_vertex. Same functions names in the ARB and core specs. */
769	if ( pState->rsGLVersion >= 3.2f
770	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_provoking_vertex "))
771	{
772	GLGETPROCOPT_(PFNGLPROVOKINGVERTEXPROC , glProvokingVertex, "");
773	}
774
775	/* OpenGL 3.3 core, GL_ARB_instanced_arrays. */
776	if (pState->rsGLVersion >= 3.3f)
777	{
778	GLGETPROC_(PFNGLVERTEXATTRIBDIVISORPROC , glVertexAttribDivisor, "");
779	}
780	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_instanced_arrays "))
781	{
782	GLGETPROC_(PFNGLVERTEXATTRIBDIVISORARBPROC , glVertexAttribDivisor, "ARB");
783	}
784
785	#undef GLGETPROCOPT_
786	#undef GLGETPROC_
787
788	return VINF_SUCCESS;
789	}
790
791
792	/* We must delay window creation until the PowerOn phase. Init is too early and will cause failures. */
793	int vmsvga3dPowerOn(PVGASTATE pThis)
794	{
795	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
796	AssertReturn(pThis->svga.p3dState, VERR_NO_MEMORY);
797	PVMSVGA3DCONTEXT pContext;
798	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
799	PVMSVGA3DCONTEXT pOtherCtx;
800	#endif
801	int rc;
802
803	if (pState->rsGLVersion != 0.0)
804	return VINF_SUCCESS; /* already initialized (load state) */
805
806	/*
807	* OpenGL function calls aren't possible without a valid current context, so create a fake one here.
808	*/
809	rc = vmsvga3dContextDefineOgl(pThis, 1, VMSVGA3D_DEF_CTX_F_INIT);
810	AssertRCReturn(rc, rc);
811
812	pContext = pState->papContexts[1];
813	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
814
815	#ifdef VMSVGA3D_DYNAMIC_LOAD
816	/* Context is set and it is possible now to resolve extension functions. */
817	rc = glLdrGetExtFunctions(pThis->pDevInsR3);
818	if (RT_FAILURE(rc))
819	{
820	LogRel(("VMSVGA3d: Error resolving extension functions: %Rrc\n", rc));
821	return rc;
822	}
823	#endif
824
825	LogRel(("VMSVGA3d: OpenGL version: %s\n"
826	"VMSVGA3d: OpenGL Vendor: %s\n"
827	"VMSVGA3d: OpenGL Renderer: %s\n"
828	"VMSVGA3d: OpenGL shader language version: %s\n",
829	glGetString(GL_VERSION), glGetString(GL_VENDOR), glGetString(GL_RENDERER),
830	glGetString(GL_SHADING_LANGUAGE_VERSION)));
831
832	rc = vmsvga3dGatherExtensions(&pState->pszExtensions, VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE);
833	AssertRCReturn(rc, rc);
834	vmsvga3dLogRelExtensions("", pState->pszExtensions);
835
836	pState->rsGLVersion = atof((const char *)glGetString(GL_VERSION));
837
838
839	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
840	/*
841	* Get the extension list for the alternative profile so we can better
842	* figure out the shader model and stuff.
843	*/
844	rc = vmsvga3dContextDefineOgl(pThis, 2, VMSVGA3D_DEF_CTX_F_INIT \| VMSVGA3D_DEF_CTX_F_OTHER_PROFILE);
845	AssertLogRelRCReturn(rc, rc);
846	pContext = pState->papContexts[1]; /* Array may have been reallocated. */
847
848	pOtherCtx = pState->papContexts[2];
849	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
850
851	LogRel(("VMSVGA3d: Alternative OpenGL version: %s\n"
852	"VMSVGA3d: Alternative OpenGL Vendor: %s\n"
853	"VMSVGA3d: Alternative OpenGL Renderer: %s\n"
854	"VMSVGA3d: Alternative OpenGL shader language version: %s\n",
855	glGetString(GL_VERSION), glGetString(GL_VENDOR), glGetString(GL_RENDERER),
856	glGetString(GL_SHADING_LANGUAGE_VERSION)));
857
858	rc = vmsvga3dGatherExtensions(&pState->pszOtherExtensions, VBOX_VMSVGA3D_OTHER_OGL_PROFILE);
859	AssertRCReturn(rc, rc);
860	vmsvga3dLogRelExtensions("Alternative ", pState->pszOtherExtensions);
861
862	pState->rsOtherGLVersion = atof((const char *)glGetString(GL_VERSION));
863
864	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
865	#else
866	pState->pszOtherExtensions = (char *)"";
867	pState->rsOtherGLVersion = pState->rsGLVersion;
868	#endif
869
870	/*
871	* Resolve GL function pointers and store them in pState->ext.
872	*/
873	rc = vmsvga3dLoadGLFunctions(pState);
874	if (RT_FAILURE(rc))
875	{
876	LogRel(("VMSVGA3d: missing required OpenGL function or extension; aborting\n"));
877	return rc;
878	}
879
880	/*
881	* Initialize the capabilities with sensible defaults.
882	*/
883	pState->caps.maxActiveLights = 1;
884	pState->caps.maxTextures = 1;
885	pState->caps.maxClipDistances = 4;
886	pState->caps.maxColorAttachments = 1;
887	pState->caps.maxRectangleTextureSize = 2048;
888	pState->caps.maxTextureAnisotropy = 2;
889	pState->caps.maxVertexShaderInstructions = 1024;
890	pState->caps.maxFragmentShaderInstructions = 1024;
891	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_NONE;
892	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_NONE;
893	pState->caps.flPointSize[0] = 1;
894	pState->caps.flPointSize[1] = 1;
895
896	/*
897	* Query capabilities
898	*/
899	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetIntegerv(GL_MAX_LIGHTS, &pState->caps.maxActiveLights));
900	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &pState->caps.maxTextures));
901	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE /* The alternative profile has a higher number here (ati/darwin). */
902	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
903	VMSVGA3D_INIT_CHECKED_BOTH(pState, pOtherCtx, pContext, glGetIntegerv(GL_MAX_CLIP_DISTANCES, &pState->caps.maxClipDistances));
904	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
905	#else
906	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_CLIP_DISTANCES, &pState->caps.maxClipDistances));
907	#endif
908	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS, &pState->caps.maxColorAttachments));
909	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_RECTANGLE_TEXTURE_SIZE, &pState->caps.maxRectangleTextureSize));
910	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &pState->caps.maxTextureAnisotropy));
911	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, pState->caps.flPointSize));
912
913	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
914	pState->ext.glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB,
915	&pState->caps.maxFragmentShaderTemps));
916	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
917	pState->ext.glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB,
918	&pState->caps.maxFragmentShaderInstructions));
919	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
920	pState->ext.glGetProgramivARB(GL_VERTEX_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB,
921	&pState->caps.maxVertexShaderTemps));
922	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
923	pState->ext.glGetProgramivARB(GL_VERTEX_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB,
924	&pState->caps.maxVertexShaderInstructions));
925
926	pState->caps.fS3TCSupported = vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_texture_compression_s3tc ");
927
928	/* http://http://www.opengl.org/wiki/Detecting_the_Shader_Model
929	* ARB Assembly Language
930	* These are done through testing the presence of extensions. You should test them in this order:
931	* GL_NV_gpu_program4: SM 4.0 or better.
932	* GL_NV_vertex_program3: SM 3.0 or better.
933	* GL_ARB_fragment_program: SM 2.0 or better.
934	* ATI does not support higher than SM 2.0 functionality in assembly shaders.
935	*
936	*/
937	/** @todo distinguish between vertex and pixel shaders??? */
938	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE /* The alternative profile has a higher number here (ati/darwin). */
939	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
940	const char pszShadingLanguageVersion = (const char )glGetString(GL_SHADING_LANGUAGE_VERSION);
941	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
942	#else
943	const char pszShadingLanguageVersion = (const char )glGetString(GL_SHADING_LANGUAGE_VERSION);
944	#endif
945	float v = pszShadingLanguageVersion ? atof(pszShadingLanguageVersion) : 0.0f;
946	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_NV_gpu_program4 ")
947	\|\| strstr(pState->pszOtherExtensions, " GL_NV_gpu_program4 "))
948	{
949	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_40;
950	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_40;
951	}
952	else
953	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_NV_vertex_program3 ")
954	\|\| strstr(pState->pszOtherExtensions, " GL_NV_vertex_program3 ")
955	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_shader_texture_lod ") /* Wine claims this suggests SM 3.0 support */
956	\|\| strstr(pState->pszOtherExtensions, " GL_ARB_shader_texture_lod ")
957	)
958	{
959	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_30;
960	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_30;
961	}
962	else
963	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_fragment_program ")
964	\|\| strstr(pState->pszOtherExtensions, " GL_ARB_fragment_program "))
965	{
966	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_20;
967	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_20;
968	}
969	else
970	{
971	LogRel(("VMSVGA3D: WARNING: unknown support for assembly shaders!!\n"));
972	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_11;
973	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_11;
974	}
975
976	/* Now check the shading language version, in case it indicates a higher supported version. */
977	if (v >= 3.30f)
978	{
979	pState->caps.vertexShaderVersion = RT_MAX(pState->caps.vertexShaderVersion, SVGA3DVSVERSION_40);
980	pState->caps.fragmentShaderVersion = RT_MAX(pState->caps.fragmentShaderVersion, SVGA3DPSVERSION_40);
981	}
982	else
983	if (v >= 1.20f)
984	{
985	pState->caps.vertexShaderVersion = RT_MAX(pState->caps.vertexShaderVersion, SVGA3DVSVERSION_20);
986	pState->caps.fragmentShaderVersion = RT_MAX(pState->caps.fragmentShaderVersion, SVGA3DPSVERSION_20);
987	}
988
989	if ( !vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_vertex_array_bgra ")
990	&& !vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_vertex_array_bgra "))
991	{
992	LogRel(("VMSVGA3D: WARNING: Missing required extension GL_ARB_vertex_array_bgra (d3dcolor)!!!\n"));
993	}
994
995	/*
996	* Tweak capabilities.
997	*/
998	/* Intel Windows drivers return 31, while the guest expects 32 at least. */
999	if ( pState->caps.maxVertexShaderTemps < 32
1000	&& vmsvga3dIsVendorIntel())
1001	pState->caps.maxVertexShaderTemps = 32;
1002
1003	#if 0
1004	SVGA3D_DEVCAP_MAX_FIXED_VERTEXBLEND = 11,
1005	SVGA3D_DEVCAP_QUERY_TYPES = 15,
1006	SVGA3D_DEVCAP_TEXTURE_GRADIENT_SAMPLING = 16,
1007	SVGA3D_DEVCAP_MAX_POINT_SIZE = 17,
1008	SVGA3D_DEVCAP_MAX_SHADER_TEXTURES = 18,
1009	SVGA3D_DEVCAP_MAX_VOLUME_EXTENT = 21,
1010	SVGA3D_DEVCAP_MAX_TEXTURE_REPEAT = 22,
1011	SVGA3D_DEVCAP_MAX_TEXTURE_ASPECT_RATIO = 23,
1012	SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY = 24,
1013	SVGA3D_DEVCAP_MAX_PRIMITIVE_COUNT = 25,
1014	SVGA3D_DEVCAP_MAX_VERTEX_INDEX = 26,
1015	SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_INSTRUCTIONS = 28,
1016	SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS = 29,
1017	SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS = 30,
1018	SVGA3D_DEVCAP_TEXTURE_OPS = 31,
1019	SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8 = 32,
1020	SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8 = 33,
1021	SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10 = 34,
1022	SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5 = 35,
1023	SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5 = 36,
1024	SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4 = 37,
1025	SVGA3D_DEVCAP_SURFACEFMT_R5G6B5 = 38,
1026	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16 = 39,
1027	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8 = 40,
1028	SVGA3D_DEVCAP_SURFACEFMT_ALPHA8 = 41,
1029	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8 = 42,
1030	SVGA3D_DEVCAP_SURFACEFMT_Z_D16 = 43,
1031	SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8 = 44,
1032	SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8 = 45,
1033	SVGA3D_DEVCAP_SURFACEFMT_DXT1 = 46,
1034	SVGA3D_DEVCAP_SURFACEFMT_DXT2 = 47,
1035	SVGA3D_DEVCAP_SURFACEFMT_DXT3 = 48,
1036	SVGA3D_DEVCAP_SURFACEFMT_DXT4 = 49,
1037	SVGA3D_DEVCAP_SURFACEFMT_DXT5 = 50,
1038	SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8 = 51,
1039	SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10 = 52,
1040	SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8 = 53,
1041	SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8 = 54,
1042	SVGA3D_DEVCAP_SURFACEFMT_CxV8U8 = 55,
1043	SVGA3D_DEVCAP_SURFACEFMT_R_S10E5 = 56,
1044	SVGA3D_DEVCAP_SURFACEFMT_R_S23E8 = 57,
1045	SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5 = 58,
1046	SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8 = 59,
1047	SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5 = 60,
1048	SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8 = 61,
1049	SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEXTURES = 63,
1050	SVGA3D_DEVCAP_SURFACEFMT_V16U16 = 65,
1051	SVGA3D_DEVCAP_SURFACEFMT_G16R16 = 66,
1052	SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16 = 67,
1053	SVGA3D_DEVCAP_SURFACEFMT_UYVY = 68,
1054	SVGA3D_DEVCAP_SURFACEFMT_YUY2 = 69,
1055	SVGA3D_DEVCAP_MULTISAMPLE_NONMASKABLESAMPLES = 70,
1056	SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES = 71,
1057	SVGA3D_DEVCAP_ALPHATOCOVERAGE = 72,
1058	SVGA3D_DEVCAP_SUPERSAMPLE = 73,
1059	SVGA3D_DEVCAP_AUTOGENMIPMAPS = 74,
1060	SVGA3D_DEVCAP_SURFACEFMT_NV12 = 75,
1061	SVGA3D_DEVCAP_SURFACEFMT_AYUV = 76,
1062	SVGA3D_DEVCAP_SURFACEFMT_Z_DF16 = 79,
1063	SVGA3D_DEVCAP_SURFACEFMT_Z_DF24 = 80,
1064	SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT = 81,
1065	SVGA3D_DEVCAP_SURFACEFMT_BC4_UNORM = 82,
1066	SVGA3D_DEVCAP_SURFACEFMT_BC5_UNORM = 83,
1067	#endif
1068
1069	LogRel(("VMSVGA3d: Capabilities:\n"));
1070	LogRel(("VMSVGA3d: maxActiveLights=%-2d maxTextures=%-2d\n",
1071	pState->caps.maxActiveLights, pState->caps.maxTextures));
1072	LogRel(("VMSVGA3d: maxClipDistances=%-2d maxColorAttachments=%-2d maxClipDistances=%d\n",
1073	pState->caps.maxClipDistances, pState->caps.maxColorAttachments, pState->caps.maxClipDistances));
1074	LogRel(("VMSVGA3d: maxColorAttachments=%-2d maxTextureAnisotropy=%-2d maxRectangleTextureSize=%d\n",
1075	pState->caps.maxColorAttachments, pState->caps.maxTextureAnisotropy, pState->caps.maxRectangleTextureSize));
1076	LogRel(("VMSVGA3d: maxVertexShaderTemps=%-2d maxVertexShaderInstructions=%d maxFragmentShaderInstructions=%d\n",
1077	pState->caps.maxVertexShaderTemps, pState->caps.maxVertexShaderInstructions, pState->caps.maxFragmentShaderInstructions));
1078	LogRel(("VMSVGA3d: maxFragmentShaderTemps=%d flPointSize={%d.%02u, %d.%02u}\n",
1079	pState->caps.maxFragmentShaderTemps,
1080	(int)pState->caps.flPointSize[0], (int)(pState->caps.flPointSize[0] * 100) % 100,
1081	(int)pState->caps.flPointSize[1], (int)(pState->caps.flPointSize[1] * 100) % 100));
1082	LogRel(("VMSVGA3d: fragmentShaderVersion=%-2d vertexShaderVersion=%-2d fS3TCSupported=%d\n",
1083	pState->caps.fragmentShaderVersion, pState->caps.vertexShaderVersion, pState->caps.fS3TCSupported));
1084
1085
1086	/* Initialize the shader library. */
1087	pState->ShaderIf.pfnSwitchInitProfile = vmsvga3dShaderIfSwitchInitProfile;
1088	pState->ShaderIf.pfnGetNextExtension = vmsvga3dShaderIfGetNextExtension;
1089	rc = ShaderInitLib(&pState->ShaderIf);
1090	AssertRC(rc);
1091
1092	/* Cleanup */
1093	rc = vmsvga3dContextDestroy(pThis, 1);
1094	AssertRC(rc);
1095	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
1096	rc = vmsvga3dContextDestroy(pThis, 2);
1097	AssertRC(rc);
1098	#endif
1099
1100	if ( pState->rsGLVersion < 3.0
1101	&& pState->rsOtherGLVersion < 3.0 /* darwin: legacy profile hack */)
1102	{
1103	LogRel(("VMSVGA3d: unsupported OpenGL version; minimum is 3.0\n"));
1104	return VERR_NOT_IMPLEMENTED;
1105	}
1106
1107	return VINF_SUCCESS;
1108	}
1109
1110	int vmsvga3dReset(PVGASTATE pThis)
1111	{
1112	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
1113	AssertReturn(pThis->svga.p3dState, VERR_NO_MEMORY);
1114
1115	/* Destroy all leftover surfaces. */
1116	for (uint32_t i = 0; i < pState->cSurfaces; i++)
1117	{
1118	if (pState->papSurfaces[i]->id != SVGA3D_INVALID_ID)
1119	vmsvga3dSurfaceDestroy(pThis, pState->papSurfaces[i]->id);
1120	}
1121
1122	/* Destroy all leftover contexts. */
1123	for (uint32_t i = 0; i < pState->cContexts; i++)
1124	{
1125	if (pState->papContexts[i]->id != SVGA3D_INVALID_ID)
1126	vmsvga3dContextDestroy(pThis, pState->papContexts[i]->id);
1127	}
1128
1129	if (pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
1130	vmsvga3dContextDestroyOgl(pThis, &pState->SharedCtx, VMSVGA3D_SHARED_CTX_ID);
1131
1132	return VINF_SUCCESS;
1133	}
1134
1135	int vmsvga3dTerminate(PVGASTATE pThis)
1136	{
1137	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
1138	AssertReturn(pState, VERR_WRONG_ORDER);
1139	int rc;
1140
1141	rc = vmsvga3dReset(pThis);
1142	AssertRCReturn(rc, rc);
1143
1144	/* Terminate the shader library. */
1145	rc = ShaderDestroyLib();
1146	AssertRC(rc);
1147
1148	#ifdef RT_OS_WINDOWS
1149	/* Terminate the window creation thread. */
1150	rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_EXIT, 0, 0);
1151	AssertRCReturn(rc, rc);
1152
1153	RTSemEventDestroy(pState->WndRequestSem);
1154	#elif defined(RT_OS_DARWIN)
1155
1156	#elif defined(RT_OS_LINUX)
1157	/* signal to the thread that it is supposed to exit */
1158	pState->bTerminate = true;
1159	/* wait for it to terminate */
1160	rc = RTThreadWait(pState->pWindowThread, 10000, NULL);
1161	AssertRC(rc);
1162	XCloseDisplay(pState->display);
1163	#endif
1164
1165	RTStrFree(pState->pszExtensions);
1166	pState->pszExtensions = NULL;
1167	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
1168	RTStrFree(pState->pszOtherExtensions);
1169	#endif
1170	pState->pszOtherExtensions = NULL;
1171
1172	return VINF_SUCCESS;
1173	}
1174
1175
1176	void vmsvga3dUpdateHostScreenViewport(PVGASTATE pThis, uint32_t idScreen, VMSVGAVIEWPORT const *pOldViewport)
1177	{
1178	/** @todo Move the visible framebuffer content here, don't wait for the guest to
1179	* redraw it. */
1180
1181	#ifdef RT_OS_DARWIN
1182	RT_NOREF(pOldViewport);
1183	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
1184	if ( pState
1185	&& idScreen == 0
1186	&& pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
1187	{
1188	vmsvga3dCocoaViewUpdateViewport(pState->SharedCtx.cocoaView);
1189	}
1190	#else
1191	RT_NOREF(pThis, idScreen, pOldViewport);
1192	#endif
1193	}
1194
1195
1196	/**
1197	* Worker for vmsvga3dQueryCaps that figures out supported operations for a
1198	* given surface format capability.
1199	*
1200	* @returns Supported/indented operations (SVGA3DFORMAT_OP_XXX).
1201	* @param idx3dCaps The SVGA3D_CAPS_XXX value of the surface format.
1202	*
1203	* @remarks See fromat_cap_table in svga_format.c (mesa/gallium) for a reference
1204	* of implicit guest expectations:
1205	* http://cgit.freedesktop.org/mesa/mesa/tree/src/gallium/drivers/svga/svga_format.c
1206	*/
1207	static uint32_t vmsvga3dGetSurfaceFormatSupport(uint32_t idx3dCaps)
1208	{
1209	uint32_t result = 0;
1210
1211	/** @todo missing:
1212	*
1213	* SVGA3DFORMAT_OP_PIXELSIZE
1214	*/
1215
1216	switch (idx3dCaps)
1217	{
1218	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1219	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1220	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1221	result \|= SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB
1222	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1223	\| SVGA3DFORMAT_OP_DISPLAYMODE /* Should not be set for alpha formats. */
1224	\| SVGA3DFORMAT_OP_3DACCELERATION; /* implies OP_DISPLAYMODE */
1225	break;
1226
1227	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1228	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1229	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1230	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1231	result \|= SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB
1232	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1233	\| SVGA3DFORMAT_OP_SAME_FORMAT_UP_TO_ALPHA_RENDERTARGET;
1234	break;
1235	}
1236
1237	/** @todo check hardware caps! */
1238	switch (idx3dCaps)
1239	{
1240	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1241	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1242	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1243	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1244	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1245	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1246	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1247	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16:
1248	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8:
1249	case SVGA3D_DEVCAP_SURFACEFMT_ALPHA8:
1250	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8:
1251	result \|= SVGA3DFORMAT_OP_TEXTURE
1252	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
1253	\| SVGA3DFORMAT_OP_OFFSCREENPLAIN
1254	\| SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET
1255	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1256	\| SVGA3DFORMAT_OP_CUBETEXTURE
1257	\| SVGA3DFORMAT_OP_SRGBREAD
1258	\| SVGA3DFORMAT_OP_SRGBWRITE;
1259	break;
1260
1261	case SVGA3D_DEVCAP_SURFACEFMT_Z_D16:
1262	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8:
1263	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8:
1264	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF16:
1265	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF24:
1266	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT:
1267	result \|= SVGA3DFORMAT_OP_ZSTENCIL
1268	\| SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH
1269	\| SVGA3DFORMAT_OP_TEXTURE /* Necessary for Ubuntu Unity */;
1270	break;
1271
1272	case SVGA3D_DEVCAP_SURFACEFMT_DXT1:
1273	case SVGA3D_DEVCAP_SURFACEFMT_DXT2:
1274	case SVGA3D_DEVCAP_SURFACEFMT_DXT3:
1275	case SVGA3D_DEVCAP_SURFACEFMT_DXT4:
1276	case SVGA3D_DEVCAP_SURFACEFMT_DXT5:
1277	result \|= SVGA3DFORMAT_OP_TEXTURE
1278	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1279	\| SVGA3DFORMAT_OP_CUBETEXTURE
1280	\| SVGA3DFORMAT_OP_SRGBREAD;
1281	break;
1282
1283	case SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8:
1284	case SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10:
1285	case SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8:
1286	case SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8:
1287	case SVGA3D_DEVCAP_SURFACEFMT_CxV8U8:
1288	break;
1289
1290	case SVGA3D_DEVCAP_SURFACEFMT_R_S10E5:
1291	case SVGA3D_DEVCAP_SURFACEFMT_R_S23E8:
1292	case SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5:
1293	case SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8:
1294	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5:
1295	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8:
1296	result \|= SVGA3DFORMAT_OP_TEXTURE
1297	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1298	\| SVGA3DFORMAT_OP_CUBETEXTURE
1299	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET;
1300	break;
1301
1302	case SVGA3D_DEVCAP_SURFACEFMT_V16U16:
1303	case SVGA3D_DEVCAP_SURFACEFMT_G16R16:
1304	case SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16:
1305	result \|= SVGA3DFORMAT_OP_TEXTURE
1306	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1307	\| SVGA3DFORMAT_OP_CUBETEXTURE
1308	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET;
1309	break;
1310
1311	case SVGA3D_DEVCAP_SURFACEFMT_UYVY:
1312	case SVGA3D_DEVCAP_SURFACEFMT_YUY2:
1313	case SVGA3D_DEVCAP_SURFACEFMT_NV12:
1314	case SVGA3D_DEVCAP_SURFACEFMT_AYUV:
1315	break;
1316	}
1317	Log(("CAPS: %s =\n%s\n", vmsvga3dGetCapString(idx3dCaps), vmsvga3dGet3dFormatString(result)));
1318
1319	return result;
1320	}
1321
1322	#if 0 /* unused */
1323	static uint32_t vmsvga3dGetDepthFormatSupport(PVMSVGA3DSTATE pState3D, uint32_t idx3dCaps)
1324	{
1325	RT_NOREF(pState3D, idx3dCaps);
1326
1327	/** @todo test this somehow */
1328	uint32_t result = SVGA3DFORMAT_OP_ZSTENCIL \| SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH;
1329
1330	Log(("CAPS: %s =\n%s\n", vmsvga3dGetCapString(idx3dCaps), vmsvga3dGet3dFormatString(result)));
1331	return result;
1332	}
1333	#endif
1334
1335
1336	int vmsvga3dQueryCaps(PVGASTATE pThis, uint32_t idx3dCaps, uint32_t *pu32Val)
1337	{
1338	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
1339	AssertReturn(pState, VERR_NO_MEMORY);
1340	int rc = VINF_SUCCESS;
1341
1342	*pu32Val = 0;
1343
1344	/*
1345	* The capabilities access by current (2015-03-01) linux sources (gallium,
1346	* vmwgfx, xorg-video-vmware) are annotated, caps without xref annotations
1347	* aren't access.
1348	*/
1349
1350	switch (idx3dCaps)
1351	{
1352	/* Linux: vmwgfx_fifo.c in kmod; only used with SVGA_CAP_GBOBJECTS. */
1353	case SVGA3D_DEVCAP_3D:
1354	pu32Val = 1; / boolean? */
1355	break;
1356
1357	case SVGA3D_DEVCAP_MAX_LIGHTS:
1358	*pu32Val = pState->caps.maxActiveLights;
1359	break;
1360
1361	case SVGA3D_DEVCAP_MAX_TEXTURES:
1362	*pu32Val = pState->caps.maxTextures;
1363	break;
1364
1365	case SVGA3D_DEVCAP_MAX_CLIP_PLANES:
1366	*pu32Val = pState->caps.maxClipDistances;
1367	break;
1368
1369	/* Linux: svga_screen.c in gallium; 3.0 or later required. */
1370	case SVGA3D_DEVCAP_VERTEX_SHADER_VERSION:
1371	*pu32Val = pState->caps.vertexShaderVersion;
1372	break;
1373
1374	case SVGA3D_DEVCAP_VERTEX_SHADER:
1375	/* boolean? */
1376	*pu32Val = (pState->caps.vertexShaderVersion != SVGA3DVSVERSION_NONE);
1377	break;
1378
1379	/* Linux: svga_screen.c in gallium; 3.0 or later required. */
1380	case SVGA3D_DEVCAP_FRAGMENT_SHADER_VERSION:
1381	*pu32Val = pState->caps.fragmentShaderVersion;
1382	break;
1383
1384	case SVGA3D_DEVCAP_FRAGMENT_SHADER:
1385	/* boolean? */
1386	*pu32Val = (pState->caps.fragmentShaderVersion != SVGA3DPSVERSION_NONE);
1387	break;
1388
1389	case SVGA3D_DEVCAP_S23E8_TEXTURES:
1390	case SVGA3D_DEVCAP_S10E5_TEXTURES:
1391	/* Must be obsolete by now; surface format caps specify the same thing. */
1392	rc = VERR_INVALID_PARAMETER;
1393	break;
1394
1395	case SVGA3D_DEVCAP_MAX_FIXED_VERTEXBLEND:
1396	break;
1397
1398	/*
1399	* 2. The BUFFER_FORMAT capabilities are deprecated, and they always
1400	* return TRUE. Even on physical hardware that does not support
1401	* these formats natively, the SVGA3D device will provide an emulation
1402	* which should be invisible to the guest OS.
1403	*/
1404	case SVGA3D_DEVCAP_D16_BUFFER_FORMAT:
1405	case SVGA3D_DEVCAP_D24S8_BUFFER_FORMAT:
1406	case SVGA3D_DEVCAP_D24X8_BUFFER_FORMAT:
1407	*pu32Val = 1;
1408	break;
1409
1410	case SVGA3D_DEVCAP_QUERY_TYPES:
1411	break;
1412
1413	case SVGA3D_DEVCAP_TEXTURE_GRADIENT_SAMPLING:
1414	break;
1415
1416	/* Linux: svga_screen.c in gallium; capped at 80.0, default 1.0. */
1417	case SVGA3D_DEVCAP_MAX_POINT_SIZE:
1418	AssertCompile(sizeof(uint32_t) == sizeof(float));
1419	(float )pu32Val = pState->caps.flPointSize[1];
1420	break;
1421
1422	case SVGA3D_DEVCAP_MAX_SHADER_TEXTURES:
1423	/** @todo ?? */
1424	rc = VERR_INVALID_PARAMETER;
1425	break;
1426
1427	/* Linux: svga_screen.c in gallium (for PIPE_CAP_MAX_TEXTURE_2D_LEVELS); have default if missing. */
1428	case SVGA3D_DEVCAP_MAX_TEXTURE_WIDTH:
1429	case SVGA3D_DEVCAP_MAX_TEXTURE_HEIGHT:
1430	*pu32Val = pState->caps.maxRectangleTextureSize;
1431	break;
1432
1433	/* Linux: svga_screen.c in gallium (for PIPE_CAP_MAX_TEXTURE_3D_LEVELS); have default if missing. */
1434	case SVGA3D_DEVCAP_MAX_VOLUME_EXTENT:
1435	//*pu32Val = pCaps->MaxVolumeExtent;
1436	*pu32Val = 256;
1437	break;
1438
1439	case SVGA3D_DEVCAP_MAX_TEXTURE_REPEAT:
1440	pu32Val = 32768; / hardcoded in Wine */
1441	break;
1442
1443	case SVGA3D_DEVCAP_MAX_TEXTURE_ASPECT_RATIO:
1444	//*pu32Val = pCaps->MaxTextureAspectRatio;
1445	break;
1446
1447	/* Linux: svga_screen.c in gallium (for PIPE_CAPF_MAX_TEXTURE_ANISOTROPY); defaults to 4.0. */
1448	case SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY:
1449	*pu32Val = pState->caps.maxTextureAnisotropy;
1450	break;
1451
1452	case SVGA3D_DEVCAP_MAX_PRIMITIVE_COUNT:
1453	case SVGA3D_DEVCAP_MAX_VERTEX_INDEX:
1454	pu32Val = 0xFFFFF; / hardcoded in Wine */
1455	break;
1456
1457	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_VERTEX/PIPE_SHADER_CAP_MAX_INSTRUCTIONS); defaults to 512. */
1458	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_INSTRUCTIONS:
1459	*pu32Val = pState->caps.maxVertexShaderInstructions;
1460	break;
1461
1462	case SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_INSTRUCTIONS:
1463	*pu32Val = pState->caps.maxFragmentShaderInstructions;
1464	break;
1465
1466	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_VERTEX/PIPE_SHADER_CAP_MAX_TEMPS); defaults to 32. */
1467	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS:
1468	*pu32Val = pState->caps.maxVertexShaderTemps;
1469	break;
1470
1471	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_FRAGMENT/PIPE_SHADER_CAP_MAX_TEMPS); defaults to 32. */
1472	case SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS:
1473	*pu32Val = pState->caps.maxFragmentShaderTemps;
1474	break;
1475
1476	case SVGA3D_DEVCAP_TEXTURE_OPS:
1477	break;
1478
1479	case SVGA3D_DEVCAP_MULTISAMPLE_NONMASKABLESAMPLES:
1480	break;
1481
1482	case SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES:
1483	break;
1484
1485	case SVGA3D_DEVCAP_ALPHATOCOVERAGE:
1486	break;
1487
1488	case SVGA3D_DEVCAP_SUPERSAMPLE:
1489	break;
1490
1491	case SVGA3D_DEVCAP_AUTOGENMIPMAPS:
1492	//*pu32Val = !!(pCaps->Caps2 & D3DCAPS2_CANAUTOGENMIPMAP);
1493	break;
1494
1495	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEXTURES:
1496	break;
1497
1498	case SVGA3D_DEVCAP_MAX_RENDER_TARGETS: /** @todo same thing? */
1499	case SVGA3D_DEVCAP_MAX_SIMULTANEOUS_RENDER_TARGETS:
1500	*pu32Val = pState->caps.maxColorAttachments;
1501	break;
1502
1503	/*
1504	* This is the maximum number of SVGA context IDs that the guest
1505	* can define using SVGA_3D_CMD_CONTEXT_DEFINE.
1506	*/
1507	case SVGA3D_DEVCAP_MAX_CONTEXT_IDS:
1508	*pu32Val = SVGA3D_MAX_CONTEXT_IDS;
1509	break;
1510
1511	/*
1512	* This is the maximum number of SVGA surface IDs that the guest
1513	* can define using SVGA_3D_CMD_SURFACE_DEFINE*.
1514	*/
1515	case SVGA3D_DEVCAP_MAX_SURFACE_IDS:
1516	*pu32Val = SVGA3D_MAX_SURFACE_IDS;
1517	break;
1518
1519	#if 0 /* Appeared more recently, not yet implemented. */
1520	/* Linux: svga_screen.c in gallium; defaults to FALSE. */
1521	case SVGA3D_DEVCAP_LINE_AA:
1522	break;
1523	/* Linux: svga_screen.c in gallium; defaults to FALSE. */
1524	case SVGA3D_DEVCAP_LINE_STIPPLE:
1525	break;
1526	/* Linux: svga_screen.c in gallium; defaults to 1.0. */
1527	case SVGA3D_DEVCAP_MAX_LINE_WIDTH:
1528	break;
1529	/* Linux: svga_screen.c in gallium; defaults to 1.0. */
1530	case SVGA3D_DEVCAP_MAX_AA_LINE_WIDTH:
1531	break;
1532	#endif
1533
1534	/*
1535	* Supported surface formats.
1536	* Linux: svga_format.c in gallium, format_cap_table defines implicit expectations.
1537	*/
1538	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1539	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1540	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1541	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1542	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1543	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1544	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1545	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16:
1546	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8:
1547	case SVGA3D_DEVCAP_SURFACEFMT_ALPHA8:
1548	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8:
1549	case SVGA3D_DEVCAP_SURFACEFMT_Z_D16:
1550	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8:
1551	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8:
1552	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF16:
1553	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF24:
1554	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT:
1555	case SVGA3D_DEVCAP_SURFACEFMT_DXT1:
1556	*pu32Val = vmsvga3dGetSurfaceFormatSupport(idx3dCaps);
1557	break;
1558
1559	case SVGA3D_DEVCAP_SURFACEFMT_DXT2:
1560	case SVGA3D_DEVCAP_SURFACEFMT_DXT3:
1561	case SVGA3D_DEVCAP_SURFACEFMT_DXT4:
1562	case SVGA3D_DEVCAP_SURFACEFMT_DXT5:
1563	case SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8:
1564	case SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10:
1565	case SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8:
1566	case SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8:
1567	case SVGA3D_DEVCAP_SURFACEFMT_CxV8U8:
1568	case SVGA3D_DEVCAP_SURFACEFMT_R_S10E5:
1569	case SVGA3D_DEVCAP_SURFACEFMT_R_S23E8:
1570	case SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5:
1571	case SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8:
1572	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5:
1573	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8:
1574	case SVGA3D_DEVCAP_SURFACEFMT_V16U16:
1575	case SVGA3D_DEVCAP_SURFACEFMT_G16R16:
1576	case SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16:
1577	case SVGA3D_DEVCAP_SURFACEFMT_UYVY:
1578	case SVGA3D_DEVCAP_SURFACEFMT_YUY2:
1579	case SVGA3D_DEVCAP_SURFACEFMT_NV12:
1580	case SVGA3D_DEVCAP_SURFACEFMT_AYUV:
1581	*pu32Val = vmsvga3dGetSurfaceFormatSupport(idx3dCaps);
1582	break;
1583
1584	/* Linux: Not referenced in current sources. */
1585	case SVGA3D_DEVCAP_SURFACEFMT_BC4_UNORM:
1586	case SVGA3D_DEVCAP_SURFACEFMT_BC5_UNORM:
1587	Log(("CAPS: Unknown CAP %s\n", vmsvga3dGetCapString(idx3dCaps)));
1588	rc = VERR_INVALID_PARAMETER;
1589	*pu32Val = 0;
1590	break;
1591
1592	default:
1593	Log(("CAPS: Unexpected CAP %d\n", idx3dCaps));
1594	rc = VERR_INVALID_PARAMETER;
1595	break;
1596	}
1597
1598	Log(("CAPS: %s - %x\n", vmsvga3dGetCapString(idx3dCaps), *pu32Val));
1599	return rc;
1600	}
1601
1602	/**
1603	* Convert SVGA format value to its OpenGL equivalent
1604	*
1605	* @remarks Clues to be had in format_texture_info table (wined3d/utils.c) with
1606	* help from wined3dformat_from_d3dformat().
1607	*/
1608	void vmsvga3dSurfaceFormat2OGL(PVMSVGA3DSURFACE pSurface, SVGA3dSurfaceFormat format)
1609	{
1610	#if 0
1611	#define AssertTestFmt(f) AssertMsgFailed(("Test me - " #f "\n"))
1612	#else
1613	#define AssertTestFmt(f) do {} while(0)
1614	#endif
1615	switch (format)
1616	{
1617	case SVGA3D_X8R8G8B8: /* D3DFMT_X8R8G8B8 - WINED3DFMT_B8G8R8X8_UNORM */
1618	pSurface->internalFormatGL = GL_RGB8;
1619	pSurface->formatGL = GL_BGRA;
1620	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1621	break;
1622	case SVGA3D_A8R8G8B8: /* D3DFMT_A8R8G8B8 - WINED3DFMT_B8G8R8A8_UNORM */
1623	pSurface->internalFormatGL = GL_RGBA8;
1624	pSurface->formatGL = GL_BGRA;
1625	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1626	break;
1627	case SVGA3D_R5G6B5: /* D3DFMT_R5G6B5 - WINED3DFMT_B5G6R5_UNORM */
1628	pSurface->internalFormatGL = GL_RGB5;
1629	pSurface->formatGL = GL_RGB;
1630	pSurface->typeGL = GL_UNSIGNED_SHORT_5_6_5;
1631	AssertTestFmt(SVGA3D_R5G6B5);
1632	break;
1633	case SVGA3D_X1R5G5B5: /* D3DFMT_X1R5G5B5 - WINED3DFMT_B5G5R5X1_UNORM */
1634	pSurface->internalFormatGL = GL_RGB5;
1635	pSurface->formatGL = GL_BGRA;
1636	pSurface->typeGL = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1637	AssertTestFmt(SVGA3D_X1R5G5B5);
1638	break;
1639	case SVGA3D_A1R5G5B5: /* D3DFMT_A1R5G5B5 - WINED3DFMT_B5G5R5A1_UNORM */
1640	pSurface->internalFormatGL = GL_RGB5_A1;
1641	pSurface->formatGL = GL_BGRA;
1642	pSurface->typeGL = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1643	AssertTestFmt(SVGA3D_A1R5G5B5);
1644	break;
1645	case SVGA3D_A4R4G4B4: /* D3DFMT_A4R4G4B4 - WINED3DFMT_B4G4R4A4_UNORM */
1646	pSurface->internalFormatGL = GL_RGBA4;
1647	pSurface->formatGL = GL_BGRA;
1648	pSurface->typeGL = GL_UNSIGNED_SHORT_4_4_4_4_REV;
1649	AssertTestFmt(SVGA3D_A4R4G4B4);
1650	break;
1651
1652	case SVGA3D_R8G8B8A8_UNORM:
1653	pSurface->internalFormatGL = GL_RGBA8;
1654	pSurface->formatGL = GL_RGBA;
1655	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1656	break;
1657
1658	case SVGA3D_Z_D32: /* D3DFMT_D32 - WINED3DFMT_D32_UNORM */
1659	pSurface->internalFormatGL = GL_DEPTH_COMPONENT32;
1660	pSurface->formatGL = GL_DEPTH_COMPONENT;
1661	pSurface->typeGL = GL_UNSIGNED_INT;
1662	break;
1663	case SVGA3D_Z_D16: /* D3DFMT_D16 - WINED3DFMT_D16_UNORM */
1664	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16; /** @todo Wine suggests GL_DEPTH_COMPONENT24. */
1665	pSurface->formatGL = GL_DEPTH_COMPONENT;
1666	pSurface->typeGL = GL_UNSIGNED_SHORT;
1667	AssertTestFmt(SVGA3D_Z_D16);
1668	break;
1669	case SVGA3D_Z_D24S8: /* D3DFMT_D24S8 - WINED3DFMT_D24_UNORM_S8_UINT */
1670	pSurface->internalFormatGL = GL_DEPTH24_STENCIL8;
1671	pSurface->formatGL = GL_DEPTH_STENCIL;
1672	pSurface->typeGL = GL_UNSIGNED_INT_24_8;
1673	break;
1674	case SVGA3D_Z_D15S1: /* D3DFMT_D15S1 - WINED3DFMT_S1_UINT_D15_UNORM */
1675	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16; /** @todo ??? */
1676	pSurface->formatGL = GL_DEPTH_STENCIL;
1677	pSurface->typeGL = GL_UNSIGNED_SHORT;
1678	/** @todo Wine sources hints at no hw support for this, so test this one! */
1679	AssertTestFmt(SVGA3D_Z_D15S1);
1680	break;
1681	case SVGA3D_Z_D24X8: /* D3DFMT_D24X8 - WINED3DFMT_X8D24_UNORM */
1682	pSurface->internalFormatGL = GL_DEPTH_COMPONENT24;
1683	pSurface->formatGL = GL_DEPTH_COMPONENT;
1684	pSurface->typeGL = GL_UNSIGNED_INT;
1685	AssertTestFmt(SVGA3D_Z_D24X8);
1686	break;
1687
1688	/* Advanced D3D9 depth formats. */
1689	case SVGA3D_Z_DF16: /* D3DFMT_DF16? - not supported */
1690	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16;
1691	pSurface->formatGL = GL_DEPTH_COMPONENT;
1692	pSurface->typeGL = GL_HALF_FLOAT;
1693	break;
1694
1695	case SVGA3D_Z_DF24: /* D3DFMT_DF24? - not supported */
1696	pSurface->internalFormatGL = GL_DEPTH_COMPONENT24;
1697	pSurface->formatGL = GL_DEPTH_COMPONENT;
1698	pSurface->typeGL = GL_FLOAT; /* ??? */
1699	break;
1700
1701	case SVGA3D_Z_D24S8_INT: /* D3DFMT_D24S8 */
1702	pSurface->internalFormatGL = GL_DEPTH24_STENCIL8;
1703	pSurface->formatGL = GL_DEPTH_STENCIL;
1704	pSurface->typeGL = GL_UNSIGNED_INT_24_8;
1705	break;
1706
1707	case SVGA3D_DXT1: /* D3DFMT_DXT1 - WINED3DFMT_DXT1 */
1708	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
1709	pSurface->formatGL = GL_RGBA; /* not used */
1710	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1711	break;
1712
1713	case SVGA3D_DXT2: /* D3DFMT_DXT2 */
1714	/* "DXT2 and DXT3 are the same from an API perspective." */
1715	RT_FALL_THRU();
1716	case SVGA3D_DXT3: /* D3DFMT_DXT3 - WINED3DFMT_DXT3 */
1717	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
1718	pSurface->formatGL = GL_RGBA; /* not used */
1719	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1720	break;
1721
1722	case SVGA3D_DXT4: /* D3DFMT_DXT4 */
1723	/* "DXT4 and DXT5 are the same from an API perspective." */
1724	RT_FALL_THRU();
1725	case SVGA3D_DXT5: /* D3DFMT_DXT5 - WINED3DFMT_DXT5 */
1726	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
1727	pSurface->formatGL = GL_RGBA; /* not used */
1728	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1729	break;
1730
1731	case SVGA3D_LUMINANCE8: /* D3DFMT_? - ? */
1732	pSurface->internalFormatGL = GL_LUMINANCE8_EXT;
1733	pSurface->formatGL = GL_LUMINANCE;
1734	pSurface->typeGL = GL_UNSIGNED_BYTE;
1735	break;
1736
1737	case SVGA3D_LUMINANCE16: /* D3DFMT_? - ? */
1738	pSurface->internalFormatGL = GL_LUMINANCE16_EXT;
1739	pSurface->formatGL = GL_LUMINANCE;
1740	pSurface->typeGL = GL_UNSIGNED_SHORT;
1741	break;
1742
1743	case SVGA3D_LUMINANCE4_ALPHA4: /* D3DFMT_? - ? */
1744	pSurface->internalFormatGL = GL_LUMINANCE4_ALPHA4_EXT;
1745	pSurface->formatGL = GL_LUMINANCE_ALPHA;
1746	pSurface->typeGL = GL_UNSIGNED_BYTE;
1747	break;
1748
1749	case SVGA3D_LUMINANCE8_ALPHA8: /* D3DFMT_? - ? */
1750	pSurface->internalFormatGL = GL_LUMINANCE8_ALPHA8_EXT;
1751	pSurface->formatGL = GL_LUMINANCE_ALPHA;
1752	pSurface->typeGL = GL_UNSIGNED_BYTE; /* unsigned_short causes issues even though this type should be 16-bit */
1753	break;
1754
1755	case SVGA3D_ALPHA8: /* D3DFMT_A8? - WINED3DFMT_A8_UNORM? */
1756	pSurface->internalFormatGL = GL_ALPHA8_EXT;
1757	pSurface->formatGL = GL_ALPHA;
1758	pSurface->typeGL = GL_UNSIGNED_BYTE;
1759	break;
1760
1761	#if 0
1762
1763	/* Bump-map formats */
1764	case SVGA3D_BUMPU8V8:
1765	return D3DFMT_V8U8;
1766	case SVGA3D_BUMPL6V5U5:
1767	return D3DFMT_L6V5U5;
1768	case SVGA3D_BUMPX8L8V8U8:
1769	return D3DFMT_X8L8V8U8;
1770	case SVGA3D_BUMPL8V8U8:
1771	/* No corresponding D3D9 equivalent. */
1772	AssertFailedReturn(D3DFMT_UNKNOWN);
1773	/* signed bump-map formats */
1774	case SVGA3D_V8U8:
1775	return D3DFMT_V8U8;
1776	case SVGA3D_Q8W8V8U8:
1777	return D3DFMT_Q8W8V8U8;
1778	case SVGA3D_CxV8U8:
1779	return D3DFMT_CxV8U8;
1780	/* mixed bump-map formats */
1781	case SVGA3D_X8L8V8U8:
1782	return D3DFMT_X8L8V8U8;
1783	case SVGA3D_A2W10V10U10:
1784	return D3DFMT_A2W10V10U10;
1785	#endif
1786
1787	case SVGA3D_ARGB_S10E5: /* 16-bit floating-point ARGB / / D3DFMT_A16B16G16R16F - WINED3DFMT_R16G16B16A16_FLOAT */
1788	pSurface->internalFormatGL = GL_RGBA16F;
1789	pSurface->formatGL = GL_RGBA;
1790	#if 0 /* bird: wine uses half float, sounds correct to me... */
1791	pSurface->typeGL = GL_FLOAT;
1792	#else
1793	pSurface->typeGL = GL_HALF_FLOAT;
1794	AssertTestFmt(SVGA3D_ARGB_S10E5);
1795	#endif
1796	break;
1797
1798	case SVGA3D_ARGB_S23E8: /* 32-bit floating-point ARGB / / D3DFMT_A32B32G32R32F - WINED3DFMT_R32G32B32A32_FLOAT */
1799	pSurface->internalFormatGL = GL_RGBA32F;
1800	pSurface->formatGL = GL_RGBA;
1801	pSurface->typeGL = GL_FLOAT; /* ?? - same as wine, so probably correct */
1802	break;
1803
1804	case SVGA3D_A2R10G10B10: /* D3DFMT_A2R10G10B10 - WINED3DFMT_B10G10R10A2_UNORM */
1805	pSurface->internalFormatGL = GL_RGB10_A2; /* ?? - same as wine, so probably correct */
1806	#if 0 /* bird: Wine uses GL_BGRA instead of GL_RGBA. */
1807	pSurface->formatGL = GL_RGBA;
1808	#else
1809	pSurface->formatGL = GL_BGRA;
1810	#endif
1811	pSurface->typeGL = GL_UNSIGNED_INT;
1812	AssertTestFmt(SVGA3D_A2R10G10B10);
1813	break;
1814
1815
1816	/* Single- and dual-component floating point formats */
1817	case SVGA3D_R_S10E5: /* D3DFMT_R16F - WINED3DFMT_R16_FLOAT */
1818	pSurface->internalFormatGL = GL_R16F;
1819	pSurface->formatGL = GL_RED;
1820	#if 0 /* bird: wine uses half float, sounds correct to me... */
1821	pSurface->typeGL = GL_FLOAT;
1822	#else
1823	pSurface->typeGL = GL_HALF_FLOAT;
1824	AssertTestFmt(SVGA3D_R_S10E5);
1825	#endif
1826	break;
1827	case SVGA3D_R_S23E8: /* D3DFMT_R32F - WINED3DFMT_R32_FLOAT */
1828	pSurface->internalFormatGL = GL_R32F;
1829	pSurface->formatGL = GL_RED;
1830	pSurface->typeGL = GL_FLOAT;
1831	break;
1832	case SVGA3D_RG_S10E5: /* D3DFMT_G16R16F - WINED3DFMT_R16G16_FLOAT */
1833	pSurface->internalFormatGL = GL_RG16F;
1834	pSurface->formatGL = GL_RG;
1835	#if 0 /* bird: wine uses half float, sounds correct to me... */
1836	pSurface->typeGL = GL_FLOAT;
1837	#else
1838	pSurface->typeGL = GL_HALF_FLOAT;
1839	AssertTestFmt(SVGA3D_RG_S10E5);
1840	#endif
1841	break;
1842	case SVGA3D_RG_S23E8: /* D3DFMT_G32R32F - WINED3DFMT_R32G32_FLOAT */
1843	pSurface->internalFormatGL = GL_RG32F;
1844	pSurface->formatGL = GL_RG;
1845	pSurface->typeGL = GL_FLOAT;
1846	break;
1847
1848	/*
1849	* Any surface can be used as a buffer object, but SVGA3D_BUFFER is
1850	* the most efficient format to use when creating new surfaces
1851	* expressly for index or vertex data.
1852	*/
1853	case SVGA3D_BUFFER:
1854	pSurface->internalFormatGL = -1;
1855	pSurface->formatGL = -1;
1856	pSurface->typeGL = -1;
1857	break;
1858
1859	#if 0
1860	return D3DFMT_UNKNOWN;
1861
1862	case SVGA3D_V16U16:
1863	return D3DFMT_V16U16;
1864	#endif
1865
1866	case SVGA3D_G16R16: /* D3DFMT_G16R16 - WINED3DFMT_R16G16_UNORM */
1867	pSurface->internalFormatGL = GL_RG16;
1868	pSurface->formatGL = GL_RG;
1869	#if 0 /* bird: Wine uses GL_UNSIGNED_SHORT here. */
1870	pSurface->typeGL = GL_UNSIGNED_INT;
1871	#else
1872	pSurface->typeGL = GL_UNSIGNED_SHORT;
1873	AssertTestFmt(SVGA3D_G16R16);
1874	#endif
1875	break;
1876
1877	case SVGA3D_A16B16G16R16: /* D3DFMT_A16B16G16R16 - WINED3DFMT_R16G16B16A16_UNORM */
1878	pSurface->internalFormatGL = GL_RGBA16;
1879	pSurface->formatGL = GL_RGBA;
1880	#if 0 /* bird: Wine uses GL_UNSIGNED_SHORT here. */
1881	pSurface->typeGL = GL_UNSIGNED_INT; /* ??? */
1882	#else
1883	pSurface->typeGL = GL_UNSIGNED_SHORT;
1884	AssertTestFmt(SVGA3D_A16B16G16R16);
1885	#endif
1886	break;
1887
1888	case SVGA3D_R8G8B8A8_SNORM:
1889	pSurface->internalFormatGL = GL_RGB8;
1890	pSurface->formatGL = GL_BGRA;
1891	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1892	AssertTestFmt(SVGA3D_R8G8B8A8_SNORM);
1893	break;
1894	case SVGA3D_R16G16_UNORM:
1895	pSurface->internalFormatGL = GL_RG16;
1896	pSurface->formatGL = GL_RG;
1897	pSurface->typeGL = GL_UNSIGNED_SHORT;
1898	AssertTestFmt(SVGA3D_R16G16_UNORM);
1899	break;
1900
1901	#if 0
1902	/* Packed Video formats */
1903	case SVGA3D_UYVY:
1904	return D3DFMT_UYVY;
1905	case SVGA3D_YUY2:
1906	return D3DFMT_YUY2;
1907
1908	/* Planar video formats */
1909	case SVGA3D_NV12:
1910	return (D3DFORMAT)MAKEFOURCC('N', 'V', '1', '2');
1911
1912	/* Video format with alpha */
1913	case SVGA3D_AYUV:
1914	return (D3DFORMAT)MAKEFOURCC('A', 'Y', 'U', 'V');
1915
1916	case SVGA3D_BC4_UNORM:
1917	case SVGA3D_BC5_UNORM:
1918	/* Unknown; only in DX10 & 11 */
1919	break;
1920	#endif
1921	default:
1922	AssertMsgFailed(("Unsupported format %d\n", format));
1923	break;
1924	}
1925	#undef AssertTestFmt
1926	}
1927
1928
1929	#if 0
1930	/**
1931	* Convert SVGA multi sample count value to its D3D equivalent
1932	*/
1933	D3DMULTISAMPLE_TYPE vmsvga3dMultipeSampleCount2D3D(uint32_t multisampleCount)
1934	{
1935	AssertCompile(D3DMULTISAMPLE_2_SAMPLES == 2);
1936	AssertCompile(D3DMULTISAMPLE_16_SAMPLES == 16);
1937
1938	if (multisampleCount > 16)
1939	return D3DMULTISAMPLE_NONE;
1940
1941	/** @todo exact same mapping as d3d? */
1942	return (D3DMULTISAMPLE_TYPE)multisampleCount;
1943	}
1944	#endif
1945
1946	/**
1947	* Destroy backend specific surface bits (part of SVGA_3D_CMD_SURFACE_DESTROY).
1948	*
1949	* @param pState The VMSVGA3d state.
1950	* @param pSurface The surface being destroyed.
1951	*/
1952	void vmsvga3dBackSurfaceDestroy(PVMSVGA3DSTATE pState, PVMSVGA3DSURFACE pSurface)
1953	{
1954	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
1955	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
1956
1957	switch (pSurface->enmOGLResType)
1958	{
1959	case VMSVGA3D_OGLRESTYPE_BUFFER:
1960	Assert(pSurface->oglId.buffer != OPENGL_INVALID_ID);
1961	pState->ext.glDeleteBuffers(1, &pSurface->oglId.buffer);
1962	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
1963	break;
1964
1965	case VMSVGA3D_OGLRESTYPE_TEXTURE:
1966	Assert(pSurface->oglId.texture != OPENGL_INVALID_ID);
1967	glDeleteTextures(1, &pSurface->oglId.texture);
1968	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
1969	break;
1970
1971	case VMSVGA3D_OGLRESTYPE_RENDERBUFFER:
1972	Assert(pSurface->oglId.renderbuffer != OPENGL_INVALID_ID);
1973	pState->ext.glDeleteRenderbuffers(1, &pSurface->oglId.renderbuffer);
1974	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
1975	break;
1976
1977	default:
1978	AssertMsg(!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface),
1979	("hint=%#x, type=%d\n",
1980	(pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK), pSurface->enmOGLResType));
1981	break;
1982	}
1983	}
1984
1985
1986	int vmsvga3dSurfaceCopy(PVGASTATE pThis, SVGA3dSurfaceImageId dest, SVGA3dSurfaceImageId src, uint32_t cCopyBoxes, SVGA3dCopyBox *pBox)
1987	{
1988	for (uint32_t i = 0; i < cCopyBoxes; i++)
1989	{
1990	SVGA3dBox destBox, srcBox;
1991
1992	srcBox.x = pBox[i].srcx;
1993	srcBox.y = pBox[i].srcy;
1994	srcBox.z = pBox[i].srcz;
1995	srcBox.w = pBox[i].w;
1996	srcBox.h = pBox[i].h;
1997	srcBox.d = pBox[i].d;
1998
1999	destBox.x = pBox[i].x;
2000	destBox.y = pBox[i].y;
2001	destBox.z = pBox[i].z;
2002	destBox.w = pBox[i].w;
2003	destBox.h = pBox[i].h;
2004	destBox.d = pBox[i].d;
2005
2006	/* No stretching is required, therefore use SVGA3D_STRETCH_BLT_POINT which translated to GL_NEAREST. */
2007	int rc = vmsvga3dSurfaceStretchBlt(pThis, &dest, &destBox, &src, &srcBox, SVGA3D_STRETCH_BLT_POINT);
2008	AssertRCReturn(rc, rc);
2009	}
2010	return VINF_SUCCESS;
2011	}
2012
2013
2014	/**
2015	* Save texture unpacking parameters and loads those appropriate for the given
2016	* surface.
2017	*
2018	* @param pState The VMSVGA3D state structure.
2019	* @param pContext The active context.
2020	* @param pSurface The surface.
2021	* @param pSave Where to save stuff.
2022	*/
2023	void vmsvga3dOglSetUnpackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2024	PVMSVGAPACKPARAMS pSave)
2025	{
2026	RT_NOREF(pState);
2027
2028	/*
2029	* Save (ignore errors, setting the defaults we want and avoids restore).
2030	*/
2031	pSave->iAlignment = 1;
2032	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ALIGNMENT, &pSave->iAlignment), pState, pContext);
2033	pSave->cxRow = 0;
2034	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ROW_LENGTH, &pSave->cxRow), pState, pContext);
2035
2036	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2037	pSave->cyImage = 0;
2038	glGetIntegerv(GL_UNPACK_IMAGE_HEIGHT, &pSave->cyImage);
2039	Assert(pSave->cyImage == 0);
2040
2041	pSave->fSwapBytes = GL_FALSE;
2042	glGetBooleanv(GL_UNPACK_SWAP_BYTES, &pSave->fSwapBytes);
2043	Assert(pSave->fSwapBytes == GL_FALSE);
2044
2045	pSave->fLsbFirst = GL_FALSE;
2046	glGetBooleanv(GL_UNPACK_LSB_FIRST, &pSave->fLsbFirst);
2047	Assert(pSave->fLsbFirst == GL_FALSE);
2048
2049	pSave->cSkipRows = 0;
2050	glGetIntegerv(GL_UNPACK_SKIP_ROWS, &pSave->cSkipRows);
2051	Assert(pSave->cSkipRows == 0);
2052
2053	pSave->cSkipPixels = 0;
2054	glGetIntegerv(GL_UNPACK_SKIP_PIXELS, &pSave->cSkipPixels);
2055	Assert(pSave->cSkipPixels == 0);
2056
2057	pSave->cSkipImages = 0;
2058	glGetIntegerv(GL_UNPACK_SKIP_IMAGES, &pSave->cSkipImages);
2059	Assert(pSave->cSkipImages == 0);
2060
2061	VMSVGA3D_CLEAR_GL_ERRORS();
2062	#endif
2063
2064	/*
2065	* Setup unpack.
2066	*
2067	* Note! We use 1 as alignment here because we currently don't do any
2068	* aligning of line pitches anywhere.
2069	*/
2070	NOREF(pSurface);
2071	if (pSave->iAlignment != 1)
2072	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, 1), pState, pContext);
2073	if (pSave->cxRow != 0)
2074	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, 0), pState, pContext);
2075	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2076	if (pSave->cyImage != 0)
2077	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, 0), pState, pContext);
2078	if (pSave->fSwapBytes != 0)
2079	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE), pState, pContext);
2080	if (pSave->fLsbFirst != 0)
2081	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE), pState, pContext);
2082	if (pSave->cSkipRows != 0)
2083	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS, 0), pState, pContext);
2084	if (pSave->cSkipPixels != 0)
2085	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0), pState, pContext);
2086	if (pSave->cSkipImages != 0)
2087	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_IMAGES, 0), pState, pContext);
2088	#endif
2089	}
2090
2091
2092	/**
2093	* Restores texture unpacking parameters.
2094	*
2095	* @param pState The VMSVGA3D state structure.
2096	* @param pContext The active context.
2097	* @param pSurface The surface.
2098	* @param pSave Where stuff was saved.
2099	*/
2100	void vmsvga3dOglRestoreUnpackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2101	PCVMSVGAPACKPARAMS pSave)
2102	{
2103	RT_NOREF(pState, pSurface);
2104
2105	if (pSave->iAlignment != 1)
2106	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, pSave->iAlignment), pState, pContext);
2107	if (pSave->cxRow != 0)
2108	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, pSave->cxRow), pState, pContext);
2109	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2110	if (pSave->cyImage != 0)
2111	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, pSave->cyImage), pState, pContext);
2112	if (pSave->fSwapBytes != 0)
2113	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SWAP_BYTES, pSave->fSwapBytes), pState, pContext);
2114	if (pSave->fLsbFirst != 0)
2115	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_LSB_FIRST, pSave->fLsbFirst), pState, pContext);
2116	if (pSave->cSkipRows != 0)
2117	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS, pSave->cSkipRows), pState, pContext);
2118	if (pSave->cSkipPixels != 0)
2119	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS, pSave->cSkipPixels), pState, pContext);
2120	if (pSave->cSkipImages != 0)
2121	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_IMAGES, pSave->cSkipImages), pState, pContext);
2122	#endif
2123	}
2124
2125	/**
2126	* Create D3D/OpenGL texture object for the specified surface.
2127	*
2128	* Surfaces are created when needed.
2129	*
2130	* @param pState The VMSVGA3d state.
2131	* @param pContext The context.
2132	* @param idAssociatedContext Probably the same as pContext->id.
2133	* @param pSurface The surface to create the texture for.
2134	*/
2135	int vmsvga3dBackCreateTexture(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, uint32_t idAssociatedContext,
2136	PVMSVGA3DSURFACE pSurface)
2137	{
2138	RT_NOREF(idAssociatedContext);
2139
2140	LogFunc(("sid=%x\n", pSurface->id));
2141
2142	uint32_t const numMipLevels = pSurface->faces[0].numMipLevels;
2143
2144	/* Fugure out what kind of texture we are creating. */
2145	GLenum binding;
2146	GLenum target;
2147	if (pSurface->surfaceFlags & SVGA3D_SURFACE_CUBEMAP)
2148	{
2149	Assert(pSurface->cFaces == 6);
2150
2151	binding = GL_TEXTURE_BINDING_CUBE_MAP;
2152	target = GL_TEXTURE_CUBE_MAP;
2153	}
2154	else
2155	{
2156	if (pSurface->pMipmapLevels[0].mipmapSize.depth > 1)
2157	{
2158	binding = GL_TEXTURE_BINDING_3D;
2159	target = GL_TEXTURE_3D;
2160	}
2161	else
2162	{
2163	Assert(pSurface->cFaces == 1);
2164
2165	binding = GL_TEXTURE_BINDING_2D;
2166	target = GL_TEXTURE_2D;
2167	}
2168	}
2169
2170	/* All textures are created in the SharedCtx. */
2171	uint32_t idPrevCtx = pState->idActiveContext;
2172	pContext = &pState->SharedCtx;
2173	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2174
2175	glGenTextures(1, &pSurface->oglId.texture);
2176	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2177	pSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_TEXTURE;
2178
2179	GLint activeTexture = 0;
2180	glGetIntegerv(binding, &activeTexture);
2181	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2182
2183	/* Must bind texture to the current context in order to change it. */
2184	glBindTexture(target, pSurface->oglId.texture);
2185	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2186
2187	/* Set the unpacking parameters. */
2188	VMSVGAPACKPARAMS SavedParams;
2189	vmsvga3dOglSetUnpackParams(pState, pContext, pSurface, &SavedParams);
2190
2191	/** @todo Set the mip map generation filter settings. */
2192
2193	/* Set the mipmap base and max level parameters. */
2194	glTexParameteri(target, GL_TEXTURE_BASE_LEVEL, 0);
2195	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2196	glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, pSurface->faces[0].numMipLevels - 1);
2197	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2198
2199	if (pSurface->fDirty)
2200	LogFunc(("sync dirty texture\n"));
2201
2202	/* Always allocate and initialize all mipmap levels; non-initialized mipmap levels used as render targets cause failures. */
2203	if (target == GL_TEXTURE_3D)
2204	{
2205	for (uint32_t i = 0; i < numMipLevels; ++i)
2206	{
2207	/* Allocate and initialize texture memory. Passing the zero filled pSurfaceData avoids
2208	* exposing random host memory to the guest and helps a with the fedora 21 surface
2209	* corruption issues (launchpad, background, search field, login).
2210	*/
2211	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->pMipmapLevels[i];
2212
2213	LogFunc(("sync dirty 3D texture mipmap level %d (pitch %x) (dirty %d)\n",
2214	i, pMipLevel->cbSurfacePitch, pMipLevel->fDirty));
2215
2216	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2217	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2218	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2219	{
2220	pState->ext.glCompressedTexImage3D(GL_TEXTURE_3D,
2221	i,
2222	pSurface->internalFormatGL,
2223	pMipLevel->mipmapSize.width,
2224	pMipLevel->mipmapSize.height,
2225	pMipLevel->mipmapSize.depth,
2226	0,
2227	pMipLevel->cbSurface,
2228	pMipLevel->pSurfaceData);
2229	}
2230	else
2231	{
2232	pState->ext.glTexImage3D(GL_TEXTURE_3D,
2233	i,
2234	pSurface->internalFormatGL,
2235	pMipLevel->mipmapSize.width,
2236	pMipLevel->mipmapSize.height,
2237	pMipLevel->mipmapSize.depth,
2238	0, /* border */
2239	pSurface->formatGL,
2240	pSurface->typeGL,
2241	pMipLevel->pSurfaceData);
2242	}
2243	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2244
2245	pMipLevel->fDirty = false;
2246	}
2247	}
2248	else if (target == GL_TEXTURE_CUBE_MAP)
2249	{
2250	for (uint32_t iFace = 0; iFace < 6; ++iFace)
2251	{
2252	GLenum const Face = vmsvga3dCubemapFaceFromIndex(iFace);
2253
2254	for (uint32_t i = 0; i < numMipLevels; ++i)
2255	{
2256	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->pMipmapLevels[iFace * numMipLevels + i];
2257	Assert(pMipLevel->mipmapSize.width == pMipLevel->mipmapSize.height);
2258	Assert(pMipLevel->mipmapSize.depth == 1);
2259
2260	LogFunc(("sync cube texture face %d mipmap level %d (dirty %d)\n",
2261	iFace, i, pMipLevel->fDirty));
2262
2263	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2264	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2265	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2266	{
2267	pState->ext.glCompressedTexImage2D(Face,
2268	i,
2269	pSurface->internalFormatGL,
2270	pMipLevel->mipmapSize.width,
2271	pMipLevel->mipmapSize.height,
2272	0,
2273	pMipLevel->cbSurface,
2274	pMipLevel->pSurfaceData);
2275	}
2276	else
2277	{
2278	glTexImage2D(Face,
2279	i,
2280	pSurface->internalFormatGL,
2281	pMipLevel->mipmapSize.width,
2282	pMipLevel->mipmapSize.height,
2283	0,
2284	pSurface->formatGL,
2285	pSurface->typeGL,
2286	pMipLevel->pSurfaceData);
2287	}
2288	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2289
2290	pMipLevel->fDirty = false;
2291	}
2292	}
2293	}
2294	else if (target == GL_TEXTURE_2D)
2295	{
2296	for (uint32_t i = 0; i < numMipLevels; ++i)
2297	{
2298	/* Allocate and initialize texture memory. Passing the zero filled pSurfaceData avoids
2299	* exposing random host memory to the guest and helps a with the fedora 21 surface
2300	* corruption issues (launchpad, background, search field, login).
2301	*/
2302	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->pMipmapLevels[i];
2303	Assert(pMipLevel->mipmapSize.depth == 1);
2304
2305	LogFunc(("sync dirty texture mipmap level %d (pitch %x) (dirty %d)\n",
2306	i, pMipLevel->cbSurfacePitch, pMipLevel->fDirty));
2307
2308	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2309	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2310	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2311	{
2312	pState->ext.glCompressedTexImage2D(GL_TEXTURE_2D,
2313	i,
2314	pSurface->internalFormatGL,
2315	pMipLevel->mipmapSize.width,
2316	pMipLevel->mipmapSize.height,
2317	0,
2318	pMipLevel->cbSurface,
2319	pMipLevel->pSurfaceData);
2320	}
2321	else
2322	{
2323	glTexImage2D(GL_TEXTURE_2D,
2324	i,
2325	pSurface->internalFormatGL,
2326	pMipLevel->mipmapSize.width,
2327	pMipLevel->mipmapSize.height,
2328	0,
2329	pSurface->formatGL,
2330	pSurface->typeGL,
2331	pMipLevel->pSurfaceData);
2332	}
2333	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2334
2335	pMipLevel->fDirty = false;
2336	}
2337	}
2338
2339	pSurface->fDirty = false;
2340
2341	/* Restore unpacking parameters. */
2342	vmsvga3dOglRestoreUnpackParams(pState, pContext, pSurface, &SavedParams);
2343
2344	/* Restore the old active texture. */
2345	glBindTexture(target, activeTexture);
2346	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2347
2348	pSurface->surfaceFlags \|= SVGA3D_SURFACE_HINT_TEXTURE;
2349	pSurface->targetGL = target;
2350	pSurface->bindingGL = binding;
2351
2352	if (idPrevCtx < pState->cContexts && pState->papContexts[idPrevCtx]->id == idPrevCtx)
2353	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pState->papContexts[idPrevCtx]);
2354	return VINF_SUCCESS;
2355	}
2356
2357
2358	/**
2359	* Backend worker for implementing SVGA_3D_CMD_SURFACE_STRETCHBLT.
2360	*
2361	* @returns VBox status code.
2362	* @param pThis The VGA device instance.
2363	* @param pState The VMSVGA3d state.
2364	* @param pDstSurface The destination host surface.
2365	* @param uDstFace The destination face (valid).
2366	* @param uDstMipmap The destination mipmap level (valid).
2367	* @param pDstBox The destination box.
2368	* @param pSrcSurface The source host surface.
2369	* @param uSrcFace The destination face (valid).
2370	* @param uSrcMipmap The source mimap level (valid).
2371	* @param pSrcBox The source box.
2372	* @param enmMode The strecht blt mode .
2373	* @param pContext The VMSVGA3d context (already current for OGL).
2374	*/
2375	int vmsvga3dBackSurfaceStretchBlt(PVGASTATE pThis, PVMSVGA3DSTATE pState,
2376	PVMSVGA3DSURFACE pDstSurface, uint32_t uDstFace, uint32_t uDstMipmap, SVGA3dBox const *pDstBox,
2377	PVMSVGA3DSURFACE pSrcSurface, uint32_t uSrcFace, uint32_t uSrcMipmap, SVGA3dBox const *pSrcBox,
2378	SVGA3dStretchBltMode enmMode, PVMSVGA3DCONTEXT pContext)
2379	{
2380	RT_NOREF(pThis);
2381
2382	AssertReturn( RT_BOOL(pSrcSurface->surfaceFlags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL)
2383	== RT_BOOL(pDstSurface->surfaceFlags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL), VERR_NOT_IMPLEMENTED);
2384
2385	GLenum glAttachment = GL_COLOR_ATTACHMENT0;
2386	GLbitfield glMask = GL_COLOR_BUFFER_BIT;
2387	if (pDstSurface->surfaceFlags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL)
2388	{
2389	/** @todo Need GL_DEPTH_STENCIL_ATTACHMENT for depth/stencil formats? */
2390	glAttachment = GL_DEPTH_ATTACHMENT;
2391	glMask = GL_DEPTH_BUFFER_BIT;
2392	}
2393
2394	/* Activate the read and draw framebuffer objects. */
2395	pState->ext.glBindFramebuffer(GL_READ_FRAMEBUFFER, pContext->idReadFramebuffer);
2396	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2397	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, pContext->idDrawFramebuffer);
2398	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2399
2400	/* Bind the source and destination objects to the right place. */
2401	GLenum textarget;
2402	if (pSrcSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2403	textarget = vmsvga3dCubemapFaceFromIndex(uSrcFace);
2404	else
2405	{
2406	/// @todo later AssertMsg(pSrcSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pSrcSurface->targetGL));
2407	textarget = GL_TEXTURE_2D;
2408	}
2409	pState->ext.glFramebufferTexture2D(GL_READ_FRAMEBUFFER, glAttachment, textarget,
2410	pSrcSurface->oglId.texture, uSrcMipmap);
2411	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2412
2413	if (pDstSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2414	textarget = vmsvga3dCubemapFaceFromIndex(uDstFace);
2415	else
2416	{
2417	/// @todo later AssertMsg(pDstSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pDstSurface->targetGL));
2418	textarget = GL_TEXTURE_2D;
2419	}
2420	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, glAttachment, textarget,
2421	pDstSurface->oglId.texture, uDstMipmap);
2422	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2423
2424	Log(("src conv. (%d,%d)(%d,%d); dest conv (%d,%d)(%d,%d)\n",
2425	pSrcBox->x, D3D_TO_OGL_Y_COORD(pSrcSurface, pSrcBox->y + pSrcBox->h),
2426	pSrcBox->x + pSrcBox->w, D3D_TO_OGL_Y_COORD(pSrcSurface, pSrcBox->y),
2427	pDstBox->x, D3D_TO_OGL_Y_COORD(pDstSurface, pDstBox->y + pDstBox->h),
2428	pDstBox->x + pDstBox->w, D3D_TO_OGL_Y_COORD(pDstSurface, pDstBox->y)));
2429
2430	pState->ext.glBlitFramebuffer(pSrcBox->x,
2431	pSrcBox->y,
2432	pSrcBox->x + pSrcBox->w, /* exclusive. */
2433	pSrcBox->y + pSrcBox->h,
2434	pDstBox->x,
2435	pDstBox->y,
2436	pDstBox->x + pDstBox->w, /* exclusive. */
2437	pDstBox->y + pDstBox->h,
2438	glMask,
2439	(enmMode == SVGA3D_STRETCH_BLT_POINT) ? GL_NEAREST : GL_LINEAR);
2440	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2441
2442	/* Reset the frame buffer association */
2443	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer);
2444	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2445
2446	return VINF_SUCCESS;
2447	}
2448
2449	/**
2450	* Save texture packing parameters and loads those appropriate for the given
2451	* surface.
2452	*
2453	* @param pState The VMSVGA3D state structure.
2454	* @param pContext The active context.
2455	* @param pSurface The surface.
2456	* @param pSave Where to save stuff.
2457	*/
2458	void vmsvga3dOglSetPackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2459	PVMSVGAPACKPARAMS pSave)
2460	{
2461	RT_NOREF(pState);
2462	/*
2463	* Save (ignore errors, setting the defaults we want and avoids restore).
2464	*/
2465	pSave->iAlignment = 1;
2466	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ALIGNMENT, &pSave->iAlignment), pState, pContext);
2467	pSave->cxRow = 0;
2468	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ROW_LENGTH, &pSave->cxRow), pState, pContext);
2469
2470	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2471	pSave->cyImage = 0;
2472	glGetIntegerv(GL_PACK_IMAGE_HEIGHT, &pSave->cyImage);
2473	Assert(pSave->cyImage == 0);
2474
2475	pSave->fSwapBytes = GL_FALSE;
2476	glGetBooleanv(GL_PACK_SWAP_BYTES, &pSave->fSwapBytes);
2477	Assert(pSave->fSwapBytes == GL_FALSE);
2478
2479	pSave->fLsbFirst = GL_FALSE;
2480	glGetBooleanv(GL_PACK_LSB_FIRST, &pSave->fLsbFirst);
2481	Assert(pSave->fLsbFirst == GL_FALSE);
2482
2483	pSave->cSkipRows = 0;
2484	glGetIntegerv(GL_PACK_SKIP_ROWS, &pSave->cSkipRows);
2485	Assert(pSave->cSkipRows == 0);
2486
2487	pSave->cSkipPixels = 0;
2488	glGetIntegerv(GL_PACK_SKIP_PIXELS, &pSave->cSkipPixels);
2489	Assert(pSave->cSkipPixels == 0);
2490
2491	pSave->cSkipImages = 0;
2492	glGetIntegerv(GL_PACK_SKIP_IMAGES, &pSave->cSkipImages);
2493	Assert(pSave->cSkipImages == 0);
2494
2495	VMSVGA3D_CLEAR_GL_ERRORS();
2496	#endif
2497
2498	/*
2499	* Setup unpack.
2500	*
2501	* Note! We use 1 as alignment here because we currently don't do any
2502	* aligning of line pitches anywhere.
2503	*/
2504	NOREF(pSurface);
2505	if (pSave->iAlignment != 1)
2506	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, 1), pState, pContext);
2507	if (pSave->cxRow != 0)
2508	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ROW_LENGTH, 0), pState, pContext);
2509	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2510	if (pSave->cyImage != 0)
2511	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_IMAGE_HEIGHT, 0), pState, pContext);
2512	if (pSave->fSwapBytes != 0)
2513	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SWAP_BYTES, GL_FALSE), pState, pContext);
2514	if (pSave->fLsbFirst != 0)
2515	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_LSB_FIRST, GL_FALSE), pState, pContext);
2516	if (pSave->cSkipRows != 0)
2517	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_ROWS, 0), pState, pContext);
2518	if (pSave->cSkipPixels != 0)
2519	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_PIXELS, 0), pState, pContext);
2520	if (pSave->cSkipImages != 0)
2521	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_IMAGES, 0), pState, pContext);
2522	#endif
2523	}
2524
2525
2526	/**
2527	* Restores texture packing parameters.
2528	*
2529	* @param pState The VMSVGA3D state structure.
2530	* @param pContext The active context.
2531	* @param pSurface The surface.
2532	* @param pSave Where stuff was saved.
2533	*/
2534	void vmsvga3dOglRestorePackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2535	PCVMSVGAPACKPARAMS pSave)
2536	{
2537	RT_NOREF(pState, pSurface);
2538	if (pSave->iAlignment != 1)
2539	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, pSave->iAlignment), pState, pContext);
2540	if (pSave->cxRow != 0)
2541	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ROW_LENGTH, pSave->cxRow), pState, pContext);
2542	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2543	if (pSave->cyImage != 0)
2544	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_IMAGE_HEIGHT, pSave->cyImage), pState, pContext);
2545	if (pSave->fSwapBytes != 0)
2546	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SWAP_BYTES, pSave->fSwapBytes), pState, pContext);
2547	if (pSave->fLsbFirst != 0)
2548	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_LSB_FIRST, pSave->fLsbFirst), pState, pContext);
2549	if (pSave->cSkipRows != 0)
2550	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_ROWS, pSave->cSkipRows), pState, pContext);
2551	if (pSave->cSkipPixels != 0)
2552	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_PIXELS, pSave->cSkipPixels), pState, pContext);
2553	if (pSave->cSkipImages != 0)
2554	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_IMAGES, pSave->cSkipImages), pState, pContext);
2555	#endif
2556	}
2557
2558
2559	/**
2560	* Backend worker for implementing SVGA_3D_CMD_SURFACE_DMA that copies one box.
2561	*
2562	* @returns Failure status code or @a rc.
2563	* @param pThis The VGA device instance data.
2564	* @param pState The VMSVGA3d state.
2565	* @param pSurface The host surface.
2566	* @param pMipLevel Mipmap level. The caller knows it already.
2567	* @param uHostFace The host face (valid).
2568	* @param uHostMipmap The host mipmap level (valid).
2569	* @param GuestPtr The guest pointer.
2570	* @param cbGuestPitch The guest pitch.
2571	* @param transfer The transfer direction.
2572	* @param pBox The box to copy (clipped, valid, except for guest's srcx, srcy, srcz).
2573	* @param pContext The context (for OpenGL).
2574	* @param rc The current rc for all boxes.
2575	* @param iBox The current box number (for Direct 3D).
2576	*/
2577	int vmsvga3dBackSurfaceDMACopyBox(PVGASTATE pThis, PVMSVGA3DSTATE pState, PVMSVGA3DSURFACE pSurface,
2578	PVMSVGA3DMIPMAPLEVEL pMipLevel, uint32_t uHostFace, uint32_t uHostMipmap,
2579	SVGAGuestPtr GuestPtr, uint32_t cbGuestPitch, SVGA3dTransferType transfer,
2580	SVGA3dCopyBox const *pBox, PVMSVGA3DCONTEXT pContext, int rc, int iBox)
2581	{
2582	RT_NOREF(iBox);
2583
2584	switch (pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK)
2585	{
2586	case SVGA3D_SURFACE_HINT_TEXTURE \| SVGA3D_SURFACE_HINT_DEPTHSTENCIL:
2587	case SVGA3D_SURFACE_HINT_DEPTHSTENCIL:
2588	case SVGA3D_SURFACE_CUBEMAP \| SVGA3D_SURFACE_HINT_TEXTURE:
2589	case SVGA3D_SURFACE_CUBEMAP \| SVGA3D_SURFACE_HINT_TEXTURE \| SVGA3D_SURFACE_HINT_RENDERTARGET:
2590	case SVGA3D_SURFACE_HINT_TEXTURE \| SVGA3D_SURFACE_HINT_RENDERTARGET:
2591	case SVGA3D_SURFACE_HINT_TEXTURE:
2592	case SVGA3D_SURFACE_HINT_RENDERTARGET:
2593	{
2594	uint32_t cbSurfacePitch;
2595	uint8_t *pDoubleBuffer;
2596	uint32_t offHst;
2597
2598	uint32_t const u32HostBlockX = pBox->x / pSurface->cxBlock;
2599	uint32_t const u32HostBlockY = pBox->y / pSurface->cyBlock;
2600	Assert(u32HostBlockX * pSurface->cxBlock == pBox->x);
2601	Assert(u32HostBlockY * pSurface->cyBlock == pBox->y);
2602
2603	uint32_t const u32GuestBlockX = pBox->srcx / pSurface->cxBlock;
2604	uint32_t const u32GuestBlockY = pBox->srcy / pSurface->cyBlock;
2605	Assert(u32GuestBlockX * pSurface->cxBlock == pBox->srcx);
2606	Assert(u32GuestBlockY * pSurface->cyBlock == pBox->srcy);
2607
2608	uint32_t const cBlocksX = (pBox->w + pSurface->cxBlock - 1) / pSurface->cxBlock;
2609	uint32_t const cBlocksY = (pBox->h + pSurface->cyBlock - 1) / pSurface->cyBlock;
2610	AssertMsgReturn(cBlocksX && cBlocksY, ("Empty box %dx%d\n", pBox->w, pBox->h), VERR_INTERNAL_ERROR);
2611
2612	GLenum texImageTarget;
2613	if (pSurface->targetGL == GL_TEXTURE_3D)
2614	{
2615	texImageTarget = GL_TEXTURE_3D;
2616	}
2617	else if (pSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2618	{
2619	texImageTarget = vmsvga3dCubemapFaceFromIndex(uHostFace);
2620	}
2621	else
2622	{
2623	AssertMsg(pSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pSurface->targetGL));
2624	texImageTarget = GL_TEXTURE_2D;
2625	}
2626
2627	pDoubleBuffer = (uint8_t *)RTMemAlloc(pMipLevel->cbSurface);
2628	AssertReturn(pDoubleBuffer, VERR_NO_MEMORY);
2629
2630	if (transfer == SVGA3D_READ_HOST_VRAM)
2631	{
2632	GLint activeTexture;
2633
2634	/* Must bind texture to the current context in order to read it. */
2635	glGetIntegerv(pSurface->bindingGL, &activeTexture);
2636	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2637
2638	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
2639	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2640
2641	/* Set row length and alignment of the input data. */
2642	VMSVGAPACKPARAMS SavedParams;
2643	vmsvga3dOglSetPackParams(pState, pContext, pSurface, &SavedParams);
2644
2645	glGetTexImage(texImageTarget,
2646	uHostMipmap,
2647	pSurface->formatGL,
2648	pSurface->typeGL,
2649	pDoubleBuffer);
2650	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2651
2652	vmsvga3dOglRestorePackParams(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	offHst = u32HostBlockX * pSurface->cbBlock + u32HostBlockY * pMipLevel->cbSurfacePitch;
2659	cbSurfacePitch = pMipLevel->cbSurfacePitch;
2660	}
2661	else
2662	{
2663	/* The buffer will contain only the copied rectangle. */
2664	offHst = 0;
2665	cbSurfacePitch = cBlocksX * pSurface->cbBlock;
2666	}
2667
2668	uint32_t const offGst = u32GuestBlockX * pSurface->cbBlock + u32GuestBlockY * cbGuestPitch;
2669
2670	rc = vmsvgaGMRTransfer(pThis,
2671	transfer,
2672	pDoubleBuffer,
2673	pMipLevel->cbSurface,
2674	offHst,
2675	cbSurfacePitch,
2676	GuestPtr,
2677	offGst,
2678	cbGuestPitch,
2679	cBlocksX * pSurface->cbBlock,
2680	cBlocksY);
2681	AssertRC(rc);
2682
2683	/* Update the opengl surface data. */
2684	if (transfer == SVGA3D_WRITE_HOST_VRAM)
2685	{
2686	GLint activeTexture = 0;
2687	glGetIntegerv(pSurface->bindingGL, &activeTexture);
2688	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2689
2690	/* Must bind texture to the current context in order to change it. */
2691	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
2692	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2693
2694	LogFunc(("copy texture mipmap level %d (pitch %x)\n", uHostMipmap, pMipLevel->cbSurfacePitch));
2695
2696	/* Set row length and alignment of the input data. */
2697	VMSVGAPACKPARAMS SavedParams;
2698	vmsvga3dOglSetUnpackParams(pState, pContext, pSurface, &SavedParams); /** @todo do we need to set ROW_LENGTH to w here? */
2699
2700	if (texImageTarget == GL_TEXTURE_3D)
2701	{
2702	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2703	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2704	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2705	{
2706	pState->ext.glCompressedTexSubImage3D(texImageTarget,
2707	uHostMipmap,
2708	pBox->x,
2709	pBox->y,
2710	pBox->z,
2711	pBox->w,
2712	pBox->h,
2713	pBox->d,
2714	pSurface->formatGL,
2715	pSurface->typeGL,
2716	pDoubleBuffer);
2717	}
2718	else
2719	{
2720	pState->ext.glTexSubImage3D(texImageTarget,
2721	uHostMipmap,
2722	u32HostBlockX,
2723	u32HostBlockY,
2724	pBox->z,
2725	cBlocksX,
2726	cBlocksY,
2727	pBox->d,
2728	pSurface->formatGL,
2729	pSurface->typeGL,
2730	pDoubleBuffer);
2731	}
2732	}
2733	else
2734	{
2735	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2736	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2737	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2738	{
2739	pState->ext.glCompressedTexSubImage2D(texImageTarget,
2740	uHostMipmap,
2741	pBox->x,
2742	pBox->y,
2743	pBox->w,
2744	pBox->h,
2745	pSurface->internalFormatGL,
2746	cbSurfacePitch * cBlocksY,
2747	pDoubleBuffer);
2748	}
2749	else
2750	{
2751	glTexSubImage2D(texImageTarget,
2752	uHostMipmap,
2753	u32HostBlockX,
2754	u32HostBlockY,
2755	cBlocksX,
2756	cBlocksY,
2757	pSurface->formatGL,
2758	pSurface->typeGL,
2759	pDoubleBuffer);
2760	}
2761	}
2762	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2763
2764	/* Restore old values. */
2765	vmsvga3dOglRestoreUnpackParams(pState, pContext, pSurface, &SavedParams);
2766
2767	/* Restore the old active texture. */
2768	glBindTexture(pSurface->targetGL, activeTexture);
2769	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2770	}
2771
2772	Log4(("first line:\n%.Rhxd\n", cBlocksX pSurface->cbBlock, pDoubleBuffer));
2773
2774	/* Free the double buffer. */
2775	RTMemFree(pDoubleBuffer);
2776	break;
2777	}
2778
2779	case SVGA3D_SURFACE_HINT_VERTEXBUFFER \| SVGA3D_SURFACE_HINT_INDEXBUFFER:
2780	case SVGA3D_SURFACE_HINT_VERTEXBUFFER:
2781	case SVGA3D_SURFACE_HINT_INDEXBUFFER:
2782	{
2783	/* Buffers are uncompressed. */
2784	AssertReturn(pSurface->cxBlock == 1 && pSurface->cyBlock == 1, VERR_INTERNAL_ERROR);
2785
2786	/* Caller already clipped pBox and buffers are 1-dimensional. */
2787	Assert(pBox->y == 0 && pBox->h == 1 && pBox->z == 0 && pBox->d == 1);
2788
2789	VMSVGA3D_CLEAR_GL_ERRORS();
2790	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pSurface->oglId.buffer);
2791	if (VMSVGA3D_GL_IS_SUCCESS(pContext))
2792	{
2793	GLenum enmGlTransfer = (transfer == SVGA3D_READ_HOST_VRAM) ? GL_READ_ONLY : GL_WRITE_ONLY;
2794	uint8_t pbData = (uint8_t )pState->ext.glMapBuffer(GL_ARRAY_BUFFER, enmGlTransfer);
2795	if (RT_LIKELY(pbData != NULL))
2796	{
2797	#if defined(VBOX_STRICT) && defined(RT_OS_DARWIN)
2798	GLint cbStrictBufSize;
2799	glGetBufferParameteriv(GL_ARRAY_BUFFER, GL_BUFFER_SIZE, &cbStrictBufSize);
2800	Assert(VMSVGA3D_GL_IS_SUCCESS(pContext));
2801	AssertMsg(cbStrictBufSize >= (int32_t)pMipLevel->cbSurface,
2802	("cbStrictBufSize=%#x cbSurface=%#x pContext->id=%#x\n", (uint32_t)cbStrictBufSize, pMipLevel->cbSurface, pContext->id));
2803	#endif
2804	Log(("Lock %s memory for rectangle (%d,%d)(%d,%d)\n",
2805	(pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK) == SVGA3D_SURFACE_HINT_VERTEXBUFFER ? "vertex" :
2806	(pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK) == SVGA3D_SURFACE_HINT_INDEXBUFFER ? "index" : "buffer",
2807	pBox->x, pBox->y, pBox->x + pBox->w, pBox->y + pBox->h));
2808
2809	uint32_t const offHst = pBox->x * pSurface->cbBlock;
2810	uint32_t const cbWidth = pBox->w * pSurface->cbBlock;
2811
2812	rc = vmsvgaGMRTransfer(pThis,
2813	transfer,
2814	pbData,
2815	pMipLevel->cbSurface,
2816	offHst,
2817	pMipLevel->cbSurfacePitch,
2818	GuestPtr,
2819	pBox->srcx * pSurface->cbBlock,
2820	cbGuestPitch,
2821	cbWidth,
2822	pBox->h);
2823	AssertRC(rc);
2824
2825	Log4(("Buffer content (updated at [0x%x;0x%x):\n%.*Rhxd\n", offHst, offHst + cbWidth, pMipLevel->cbSurface, pbData));
2826
2827	pState->ext.glUnmapBuffer(GL_ARRAY_BUFFER);
2828	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2829	}
2830	else
2831	VMSVGA3D_GL_GET_AND_COMPLAIN(pState, pContext, ("glMapBuffer(GL_ARRAY_BUFFER, %#x) -> NULL\n", enmGlTransfer));
2832	}
2833	else
2834	VMSVGA3D_GL_COMPLAIN(pState, pContext, ("glBindBuffer(GL_ARRAY_BUFFER, %#x)\n", pSurface->oglId.buffer));
2835	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
2836	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2837	break;
2838	}
2839
2840	default:
2841	AssertFailed();
2842	break;
2843	}
2844
2845	return rc;
2846	}
2847
2848	int vmsvga3dGenerateMipmaps(PVGASTATE pThis, uint32_t sid, SVGA3dTextureFilter filter)
2849	{
2850	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
2851	PVMSVGA3DSURFACE pSurface;
2852	int rc = VINF_SUCCESS;
2853	PVMSVGA3DCONTEXT pContext;
2854	uint32_t cid;
2855	GLint activeTexture = 0;
2856
2857	AssertReturn(pState, VERR_NO_MEMORY);
2858
2859	rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
2860	AssertRCReturn(rc, rc);
2861
2862	Assert(filter != SVGA3D_TEX_FILTER_FLATCUBIC);
2863	Assert(filter != SVGA3D_TEX_FILTER_GAUSSIANCUBIC);
2864	pSurface->autogenFilter = filter;
2865
2866	LogFunc(("sid=%x filter=%d\n", sid, filter));
2867
2868	cid = SVGA3D_INVALID_ID;
2869	pContext = &pState->SharedCtx;
2870	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2871
2872	if (pSurface->oglId.texture == OPENGL_INVALID_ID)
2873	{
2874	/* Unknown surface type; turn it into a texture. */
2875	LogFunc(("unknown src surface id=%x type=%d format=%d -> create texture\n", sid, pSurface->surfaceFlags, pSurface->format));
2876	rc = vmsvga3dBackCreateTexture(pState, pContext, cid, pSurface);
2877	AssertRCReturn(rc, rc);
2878	}
2879	else
2880	{
2881	/** @todo new filter */
2882	AssertFailed();
2883	}
2884
2885	glGetIntegerv(pSurface->bindingGL, &activeTexture);
2886	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2887
2888	/* Must bind texture to the current context in order to change it. */
2889	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
2890	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2891
2892	/* Generate the mip maps. */
2893	pState->ext.glGenerateMipmap(pSurface->targetGL);
2894	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2895
2896	/* Restore the old texture. */
2897	glBindTexture(pSurface->targetGL, activeTexture);
2898	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2899
2900	return VINF_SUCCESS;
2901	}
2902
2903
2904	#ifdef RT_OS_LINUX
2905	/**
2906	* X11 event handling thread.
2907	*
2908	* @returns VINF_SUCCESS (ignored)
2909	* @param hThreadSelf thread handle
2910	* @param pvUser pointer to pState structure
2911	*/
2912	DECLCALLBACK(int) vmsvga3dXEventThread(RTTHREAD hThreadSelf, void *pvUser)
2913	{
2914	RT_NOREF(hThreadSelf);
2915	PVMSVGA3DSTATE pState = (PVMSVGA3DSTATE)pvUser;
2916	while (!pState->bTerminate)
2917	{
2918	while (XPending(pState->display) > 0)
2919	{
2920	XEvent event;
2921	XNextEvent(pState->display, &event);
2922
2923	switch (event.type)
2924	{
2925	default:
2926	break;
2927	}
2928	}
2929	/* sleep for 16ms to not burn too many cycles */
2930	RTThreadSleep(16);
2931	}
2932	return VINF_SUCCESS;
2933	}
2934	#endif // RT_OS_LINUX
2935
2936
2937	/**
2938	* Create a new 3d context
2939	*
2940	* @returns VBox status code.
2941	* @param pThis VGA device instance data.
2942	* @param cid Context id
2943	* @param fFlags VMSVGA3D_DEF_CTX_F_XXX.
2944	*/
2945	int vmsvga3dContextDefineOgl(PVGASTATE pThis, uint32_t cid, uint32_t fFlags)
2946	{
2947	int rc;
2948	PVMSVGA3DCONTEXT pContext;
2949	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
2950
2951	AssertReturn(pState, VERR_NO_MEMORY);
2952	AssertReturn( cid < SVGA3D_MAX_CONTEXT_IDS
2953	\|\| (cid == VMSVGA3D_SHARED_CTX_ID && (fFlags & VMSVGA3D_DEF_CTX_F_SHARED_CTX)), VERR_INVALID_PARAMETER);
2954	#if !defined(VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE) \|\| !(defined(RT_OS_DARWIN))
2955	AssertReturn(!(fFlags & VMSVGA3D_DEF_CTX_F_OTHER_PROFILE), VERR_INTERNAL_ERROR_3);
2956	#endif
2957
2958	Log(("vmsvga3dContextDefine id %x\n", cid));
2959
2960	if (cid == VMSVGA3D_SHARED_CTX_ID)
2961	pContext = &pState->SharedCtx;
2962	else
2963	{
2964	if (cid >= pState->cContexts)
2965	{
2966	/* Grow the array. */
2967	uint32_t cNew = RT_ALIGN(cid + 15, 16);
2968	void pvNew = RTMemRealloc(pState->papContexts, sizeof(pState->papContexts[0]) cNew);
2969	AssertReturn(pvNew, VERR_NO_MEMORY);
2970	pState->papContexts = (PVMSVGA3DCONTEXT *)pvNew;
2971	while (pState->cContexts < cNew)
2972	{
2973	pContext = (PVMSVGA3DCONTEXT)RTMemAllocZ(sizeof(*pContext));
2974	AssertReturn(pContext, VERR_NO_MEMORY);
2975	pContext->id = SVGA3D_INVALID_ID;
2976	pState->papContexts[pState->cContexts++] = pContext;
2977	}
2978	}
2979	/* If one already exists with this id, then destroy it now. */
2980	if (pState->papContexts[cid]->id != SVGA3D_INVALID_ID)
2981	vmsvga3dContextDestroy(pThis, cid);
2982
2983	pContext = pState->papContexts[cid];
2984	}
2985
2986	/*
2987	* Find or create the shared context if needed (necessary for sharing e.g. textures between contexts).
2988	*/
2989	PVMSVGA3DCONTEXT pSharedCtx = NULL;
2990	if (!(fFlags & (VMSVGA3D_DEF_CTX_F_INIT \| VMSVGA3D_DEF_CTX_F_SHARED_CTX)))
2991	{
2992	pSharedCtx = &pState->SharedCtx;
2993	if (pSharedCtx->id != VMSVGA3D_SHARED_CTX_ID)
2994	{
2995	rc = vmsvga3dContextDefineOgl(pThis, VMSVGA3D_SHARED_CTX_ID, VMSVGA3D_DEF_CTX_F_SHARED_CTX);
2996	AssertLogRelRCReturn(rc, rc);
2997	}
2998	}
2999
3000	/*
3001	* Initialize the context.
3002	*/
3003	memset(pContext, 0, sizeof(*pContext));
3004	pContext->id = cid;
3005	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); i++)
3006	pContext->aSidActiveTextures[i] = SVGA3D_INVALID_ID;
3007
3008	pContext->state.shidVertex = SVGA3D_INVALID_ID;
3009	pContext->state.shidPixel = SVGA3D_INVALID_ID;
3010	pContext->idFramebuffer = OPENGL_INVALID_ID;
3011	pContext->idReadFramebuffer = OPENGL_INVALID_ID;
3012	pContext->idDrawFramebuffer = OPENGL_INVALID_ID;
3013
3014	rc = ShaderContextCreate(&pContext->pShaderContext);
3015	AssertRCReturn(rc, rc);
3016
3017	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->state.aRenderTargets); i++)
3018	pContext->state.aRenderTargets[i] = SVGA3D_INVALID_ID;
3019
3020	#ifdef RT_OS_WINDOWS
3021	/* Create a context window with minimal 4x4 size. We will never use the swapchain
3022	* to present the rendered image. Rendered images from the guest will be copied to
3023	* the VMSVGA SCREEN object, which can be either an offscreen render target or
3024	* system memory in the guest VRAM.
3025	*/
3026	rc = vmsvga3dContextWindowCreate(pState->hInstance, pState->pWindowThread, pState->WndRequestSem, &pContext->hwnd);
3027	AssertRCReturn(rc, rc);
3028
3029	pContext->hdc = GetDC(pContext->hwnd);
3030	AssertMsgReturn(pContext->hdc, ("GetDC %x failed with %d\n", pContext->hwnd, GetLastError()), VERR_INTERNAL_ERROR);
3031
3032	PIXELFORMATDESCRIPTOR pfd = {
3033	sizeof(PIXELFORMATDESCRIPTOR), /* size of this pfd */
3034	1, /* version number */
3035	PFD_DRAW_TO_WINDOW \| /* support window */
3036	PFD_SUPPORT_OPENGL, /* support OpenGL */
3037	PFD_TYPE_RGBA, /* RGBA type */
3038	24, /* 24-bit color depth */
3039	0, 0, 0, 0, 0, 0, /* color bits ignored */
3040	8, /* alpha buffer */
3041	0, /* shift bit ignored */
3042	0, /* no accumulation buffer */
3043	0, 0, 0, 0, /* accum bits ignored */
3044	16, /* set depth buffer */
3045	16, /* set stencil buffer */
3046	0, /* no auxiliary buffer */
3047	PFD_MAIN_PLANE, /* main layer */
3048	0, /* reserved */
3049	0, 0, 0 /* layer masks ignored */
3050	};
3051	int pixelFormat;
3052	BOOL ret;
3053
3054	pixelFormat = ChoosePixelFormat(pContext->hdc, &pfd);
3055	/** @todo is this really necessary?? */
3056	pixelFormat = ChoosePixelFormat(pContext->hdc, &pfd);
3057	AssertMsgReturn(pixelFormat != 0, ("ChoosePixelFormat failed with %d\n", GetLastError()), VERR_INTERNAL_ERROR);
3058
3059	ret = SetPixelFormat(pContext->hdc, pixelFormat, &pfd);
3060	AssertMsgReturn(ret == TRUE, ("SetPixelFormat failed with %d\n", GetLastError()), VERR_INTERNAL_ERROR);
3061
3062	pContext->hglrc = wglCreateContext(pContext->hdc);
3063	AssertMsgReturn(pContext->hglrc, ("wglCreateContext %x failed with %d\n", pContext->hdc, GetLastError()), VERR_INTERNAL_ERROR);
3064
3065	if (pSharedCtx)
3066	{
3067	ret = wglShareLists(pSharedCtx->hglrc, pContext->hglrc);
3068	AssertMsg(ret == TRUE, ("wglShareLists(%p, %p) failed with %d\n", pSharedCtx->hglrc, pContext->hglrc, GetLastError()));
3069	}
3070
3071	#elif defined(RT_OS_DARWIN)
3072	pContext->fOtherProfile = RT_BOOL(fFlags & VMSVGA3D_DEF_CTX_F_OTHER_PROFILE);
3073
3074	NativeNSOpenGLContextRef pShareContext = pSharedCtx ? pSharedCtx->cocoaContext : NULL;
3075	vmsvga3dCocoaCreateViewAndContext(&pContext->cocoaView, &pContext->cocoaContext,
3076	NULL,
3077	4, 4,
3078	pShareContext, pContext->fOtherProfile);
3079
3080	#else
3081	if (pState->display == NULL)
3082	{
3083	/* get an X display and make sure we have glX 1.3 */
3084	pState->display = XOpenDisplay(0);
3085	AssertLogRelMsgReturn(pState->display, ("XOpenDisplay failed"), VERR_INTERNAL_ERROR);
3086	int glxMajor, glxMinor;
3087	Bool ret = glXQueryVersion(pState->display, &glxMajor, &glxMinor);
3088	AssertLogRelMsgReturn(ret && glxMajor == 1 && glxMinor >= 3, ("glX >=1.3 not present"), VERR_INTERNAL_ERROR);
3089	/* start our X event handling thread */
3090	rc = RTThreadCreate(&pState->pWindowThread, vmsvga3dXEventThread, pState, 0, RTTHREADTYPE_GUI, RTTHREADFLAGS_WAITABLE, "VMSVGA3DXEVENT");
3091	AssertLogRelMsgReturn(RT_SUCCESS(rc), ("Async IO Thread creation for 3d window handling failed rc=%Rrc\n", rc), rc);
3092	}
3093
3094	Window defaultRootWindow = XDefaultRootWindow(pState->display);
3095	/* Create a small 4x4 window required for GL context. */
3096	int attrib[] =
3097	{
3098	GLX_RGBA,
3099	GLX_RED_SIZE, 1,
3100	GLX_GREEN_SIZE, 1,
3101	GLX_BLUE_SIZE, 1,
3102	//GLX_ALPHA_SIZE, 1, this flips the bbos screen
3103	GLX_DOUBLEBUFFER,
3104	None
3105	};
3106	XVisualInfo *vi = glXChooseVisual(pState->display, DefaultScreen(pState->display), attrib);
3107	AssertLogRelMsgReturn(vi, ("glXChooseVisual failed"), VERR_INTERNAL_ERROR);
3108	XSetWindowAttributes swa;
3109	swa.colormap = XCreateColormap(pState->display, defaultRootWindow, vi->visual, AllocNone);
3110	AssertLogRelMsgReturn(swa.colormap, ("XCreateColormap failed"), VERR_INTERNAL_ERROR);
3111	swa.border_pixel = 0;
3112	swa.background_pixel = 0;
3113	swa.event_mask = StructureNotifyMask;
3114	unsigned long flags = CWBorderPixel \| CWBackPixel \| CWColormap \| CWEventMask;
3115	pContext->window = XCreateWindow(pState->display, defaultRootWindow,
3116	0, 0, 4, 4,
3117	0, vi->depth, InputOutput,
3118	vi->visual, flags, &swa);
3119	AssertLogRelMsgReturn(pContext->window, ("XCreateWindow failed"), VERR_INTERNAL_ERROR);
3120
3121	/* The window is hidden by default and never mapped, because we only render offscreen and never present to it. */
3122
3123	GLXContext shareContext = pSharedCtx ? pSharedCtx->glxContext : NULL;
3124	pContext->glxContext = glXCreateContext(pState->display, vi, shareContext, GL_TRUE);
3125	AssertLogRelMsgReturn(pContext->glxContext, ("glXCreateContext failed"), VERR_INTERNAL_ERROR);
3126	#endif
3127
3128	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3129
3130	/* NULL during the first PowerOn call. */
3131	if (pState->ext.glGenFramebuffers)
3132	{
3133	/* Create a framebuffer object for this context. */
3134	pState->ext.glGenFramebuffers(1, &pContext->idFramebuffer);
3135	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3136
3137	/* Bind the object to the framebuffer target. */
3138	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer);
3139	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3140
3141	/* Create read and draw framebuffer objects for this context. */
3142	pState->ext.glGenFramebuffers(1, &pContext->idReadFramebuffer);
3143	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3144
3145	pState->ext.glGenFramebuffers(1, &pContext->idDrawFramebuffer);
3146	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3147
3148	}
3149	#if 0
3150	/** @todo move to shader lib!!! */
3151	/* Clear the screen */
3152	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3153
3154	glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
3155	glClearIndex(0);
3156	glClearDepth(1);
3157	glClearStencil(0xffff);
3158	glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
3159	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
3160	glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
3161	if (pState->ext.glProvokingVertex)
3162	pState->ext.glProvokingVertex(GL_FIRST_VERTEX_CONVENTION);
3163	/** @todo move to shader lib!!! */
3164	#endif
3165	return VINF_SUCCESS;
3166	}
3167
3168
3169	/**
3170	* Create a new 3d context
3171	*
3172	* @returns VBox status code.
3173	* @param pThis VGA device instance data.
3174	* @param cid Context id
3175	*/
3176	int vmsvga3dContextDefine(PVGASTATE pThis, uint32_t cid)
3177	{
3178	return vmsvga3dContextDefineOgl(pThis, cid, 0/fFlags/);
3179	}
3180
3181	/**
3182	* Destroys a 3d context.
3183	*
3184	* @returns VBox status code.
3185	* @param pThis VGA device instance data.
3186	* @param pContext The context to destroy.
3187	* @param cid Context id
3188	*/
3189	static int vmsvga3dContextDestroyOgl(PVGASTATE pThis, PVMSVGA3DCONTEXT pContext, uint32_t cid)
3190	{
3191	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
3192	AssertReturn(pState, VERR_NO_MEMORY);
3193	AssertReturn(pContext, VERR_INVALID_PARAMETER);
3194	AssertReturn(pContext->id == cid, VERR_INVALID_PARAMETER);
3195	Log(("vmsvga3dContextDestroyOgl id %x\n", cid));
3196
3197	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3198
3199	/* Destroy all leftover pixel shaders. */
3200	for (uint32_t i = 0; i < pContext->cPixelShaders; i++)
3201	{
3202	if (pContext->paPixelShader[i].id != SVGA3D_INVALID_ID)
3203	vmsvga3dShaderDestroy(pThis, pContext->paPixelShader[i].cid, pContext->paPixelShader[i].id, pContext->paPixelShader[i].type);
3204	}
3205	if (pContext->paPixelShader)
3206	RTMemFree(pContext->paPixelShader);
3207
3208	/* Destroy all leftover vertex shaders. */
3209	for (uint32_t i = 0; i < pContext->cVertexShaders; i++)
3210	{
3211	if (pContext->paVertexShader[i].id != SVGA3D_INVALID_ID)
3212	vmsvga3dShaderDestroy(pThis, pContext->paVertexShader[i].cid, pContext->paVertexShader[i].id, pContext->paVertexShader[i].type);
3213	}
3214	if (pContext->paVertexShader)
3215	RTMemFree(pContext->paVertexShader);
3216
3217	if (pContext->state.paVertexShaderConst)
3218	RTMemFree(pContext->state.paVertexShaderConst);
3219	if (pContext->state.paPixelShaderConst)
3220	RTMemFree(pContext->state.paPixelShaderConst);
3221
3222	if (pContext->pShaderContext)
3223	{
3224	int rc = ShaderContextDestroy(pContext->pShaderContext);
3225	AssertRC(rc);
3226	}
3227
3228	if (pContext->idFramebuffer != OPENGL_INVALID_ID)
3229	{
3230	/* Unbind the object from the framebuffer target. */
3231	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, 0 /* back buffer */);
3232	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3233	pState->ext.glDeleteFramebuffers(1, &pContext->idFramebuffer);
3234	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3235
3236	if (pContext->idReadFramebuffer != OPENGL_INVALID_ID)
3237	{
3238	pState->ext.glDeleteFramebuffers(1, &pContext->idReadFramebuffer);
3239	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3240	}
3241	if (pContext->idDrawFramebuffer != OPENGL_INVALID_ID)
3242	{
3243	pState->ext.glDeleteFramebuffers(1, &pContext->idDrawFramebuffer);
3244	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3245	}
3246	}
3247
3248	vmsvga3dOcclusionQueryDelete(pState, pContext);
3249
3250	#ifdef RT_OS_WINDOWS
3251	wglMakeCurrent(pContext->hdc, NULL);
3252	wglDeleteContext(pContext->hglrc);
3253	ReleaseDC(pContext->hwnd, pContext->hdc);
3254
3255	/* Destroy the window we've created. */
3256	int rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_DESTROYWINDOW, (WPARAM)pContext->hwnd, 0);
3257	AssertRC(rc);
3258	#elif defined(RT_OS_DARWIN)
3259	vmsvga3dCocoaDestroyViewAndContext(pContext->cocoaView, pContext->cocoaContext);
3260	#elif defined(RT_OS_LINUX)
3261	glXMakeCurrent(pState->display, None, NULL);
3262	glXDestroyContext(pState->display, pContext->glxContext);
3263	XDestroyWindow(pState->display, pContext->window);
3264	#endif
3265
3266	memset(pContext, 0, sizeof(*pContext));
3267	pContext->id = SVGA3D_INVALID_ID;
3268
3269	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3270	return VINF_SUCCESS;
3271	}
3272
3273	/**
3274	* Destroy an existing 3d context
3275	*
3276	* @returns VBox status code.
3277	* @param pThis VGA device instance data.
3278	* @param cid Context id
3279	*/
3280	int vmsvga3dContextDestroy(PVGASTATE pThis, uint32_t cid)
3281	{
3282	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
3283	AssertReturn(pState, VERR_WRONG_ORDER);
3284
3285	/*
3286	* Resolve the context and hand it to the common worker function.
3287	*/
3288	if ( cid < pState->cContexts
3289	&& pState->papContexts[cid]->id == cid)
3290	return vmsvga3dContextDestroyOgl(pThis, pState->papContexts[cid], cid);
3291
3292	AssertReturn(cid < SVGA3D_MAX_CONTEXT_IDS, VERR_INVALID_PARAMETER);
3293	return VINF_SUCCESS;
3294	}
3295
3296	/**
3297	* Worker for vmsvga3dChangeMode that resizes a context.
3298	*
3299	* @param pThis The VGA device instance data.
3300	* @param pState The VMSVGA3d state.
3301	* @param pContext The context.
3302	*/
3303	static void vmsvga3dChangeModeOneContext(PVGASTATE pThis, PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
3304	{
3305	RT_NOREF3(pThis, pState, pContext);
3306	/* Do nothing. The window is not used for presenting. */
3307	}
3308
3309	/* Handle resize */
3310	int vmsvga3dChangeMode(PVGASTATE pThis)
3311	{
3312	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
3313	AssertReturn(pState, VERR_NO_MEMORY);
3314
3315	/* Resize the shared context too. */
3316	if (pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
3317	vmsvga3dChangeModeOneContext(pThis, pState, &pState->SharedCtx);
3318
3319	/* Resize all active contexts. */
3320	for (uint32_t i = 0; i < pState->cContexts; i++)
3321	{
3322	PVMSVGA3DCONTEXT pContext = pState->papContexts[i];
3323	if (pContext->id != SVGA3D_INVALID_ID)
3324	vmsvga3dChangeModeOneContext(pThis, pState, pContext);
3325	}
3326
3327	return VINF_SUCCESS;
3328	}
3329
3330
3331	int vmsvga3dSetTransform(PVGASTATE pThis, uint32_t cid, SVGA3dTransformType type, float matrix[16])
3332	{
3333	PVMSVGA3DCONTEXT pContext;
3334	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
3335	AssertReturn(pState, VERR_NO_MEMORY);
3336	bool fModelViewChanged = false;
3337
3338	Log(("vmsvga3dSetTransform cid=%x %s\n", cid, vmsvgaTransformToString(type)));
3339
3340	if ( cid >= pState->cContexts
3341	\|\| pState->papContexts[cid]->id != cid)
3342	{
3343	Log(("vmsvga3dSetTransform invalid context id!\n"));
3344	return VERR_INVALID_PARAMETER;
3345	}
3346
3347	ASSERT_GUEST_RETURN((unsigned)type < SVGA3D_TRANSFORM_MAX, VERR_INVALID_PARAMETER);
3348
3349	pContext = pState->papContexts[cid];
3350	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3351
3352	/* Save this matrix for vm state save/restore. */
3353	pContext->state.aTransformState[type].fValid = true;
3354	memcpy(pContext->state.aTransformState[type].matrix, matrix, sizeof(pContext->state.aTransformState[type].matrix));
3355	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_TRANSFORM;
3356
3357	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)));
3358	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)));
3359	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)));
3360	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)));
3361
3362	switch (type)
3363	{
3364	case SVGA3D_TRANSFORM_VIEW:
3365	/* View * World = Model View */
3366	glMatrixMode(GL_MODELVIEW);
3367	glLoadMatrixf(matrix);
3368	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_WORLD].fValid)
3369	glMultMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_WORLD].matrix);
3370	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3371	fModelViewChanged = true;
3372	break;
3373
3374	case SVGA3D_TRANSFORM_PROJECTION:
3375	{
3376	int rc = ShaderTransformProjection(pContext->state.RectViewPort.w, pContext->state.RectViewPort.h, matrix, false /* fPretransformed */);
3377	AssertRCReturn(rc, rc);
3378	break;
3379	}
3380
3381	case SVGA3D_TRANSFORM_TEXTURE0:
3382	glMatrixMode(GL_TEXTURE);
3383	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3384	glLoadMatrixf(matrix);
3385	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3386	break;
3387
3388	case SVGA3D_TRANSFORM_TEXTURE1:
3389	case SVGA3D_TRANSFORM_TEXTURE2:
3390	case SVGA3D_TRANSFORM_TEXTURE3:
3391	case SVGA3D_TRANSFORM_TEXTURE4:
3392	case SVGA3D_TRANSFORM_TEXTURE5:
3393	case SVGA3D_TRANSFORM_TEXTURE6:
3394	case SVGA3D_TRANSFORM_TEXTURE7:
3395	Log(("vmsvga3dSetTransform: unsupported SVGA3D_TRANSFORM_TEXTUREx transform!!\n"));
3396	return VERR_INVALID_PARAMETER;
3397
3398	case SVGA3D_TRANSFORM_WORLD:
3399	/* View * World = Model View */
3400	glMatrixMode(GL_MODELVIEW);
3401	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].fValid)
3402	glLoadMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
3403	else
3404	glLoadIdentity();
3405	glMultMatrixf(matrix);
3406	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3407	fModelViewChanged = true;
3408	break;
3409
3410	case SVGA3D_TRANSFORM_WORLD1:
3411	case SVGA3D_TRANSFORM_WORLD2:
3412	case SVGA3D_TRANSFORM_WORLD3:
3413	Log(("vmsvga3dSetTransform: unsupported SVGA3D_TRANSFORM_WORLDx transform!!\n"));
3414	return VERR_INVALID_PARAMETER;
3415
3416	default:
3417	Log(("vmsvga3dSetTransform: unknown type!!\n"));
3418	return VERR_INVALID_PARAMETER;
3419	}
3420
3421	/* Apparently we need to reset the light and clip data after modifying the modelview matrix. */
3422	if (fModelViewChanged)
3423	{
3424	/* Reprogram the clip planes. */
3425	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aClipPlane); j++)
3426	{
3427	if (pContext->state.aClipPlane[j].fValid == true)
3428	vmsvga3dSetClipPlane(pThis, cid, j, pContext->state.aClipPlane[j].plane);
3429	}
3430
3431	/* Reprogram the light data. */
3432	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aLightData); j++)
3433	{
3434	if (pContext->state.aLightData[j].fValidData == true)
3435	vmsvga3dSetLightData(pThis, cid, j, &pContext->state.aLightData[j].data);
3436	}
3437	}
3438
3439	return VINF_SUCCESS;
3440	}
3441
3442	int vmsvga3dSetZRange(PVGASTATE pThis, uint32_t cid, SVGA3dZRange zRange)
3443	{
3444	PVMSVGA3DCONTEXT pContext;
3445	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
3446	AssertReturn(pState, VERR_NO_MEMORY);
3447
3448	Log(("vmsvga3dSetZRange cid=%x min=%d max=%d\n", cid, (uint32_t)(zRange.min * 100.0), (uint32_t)(zRange.max * 100.0)));
3449
3450	if ( cid >= pState->cContexts
3451	\|\| pState->papContexts[cid]->id != cid)
3452	{
3453	Log(("vmsvga3dSetZRange invalid context id!\n"));
3454	return VERR_INVALID_PARAMETER;
3455	}
3456	pContext = pState->papContexts[cid];
3457	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3458
3459	pContext->state.zRange = zRange;
3460	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_ZRANGE;
3461
3462	if (zRange.min < -1.0)
3463	zRange.min = -1.0;
3464	if (zRange.max > 1.0)
3465	zRange.max = 1.0;
3466
3467	glDepthRange((GLdouble)zRange.min, (GLdouble)zRange.max);
3468	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3469	return VINF_SUCCESS;
3470	}
3471
3472	/**
3473	* Convert SVGA blend op value to its OpenGL equivalent
3474	*/
3475	static GLenum vmsvga3dBlendOp2GL(uint32_t blendOp)
3476	{
3477	switch (blendOp)
3478	{
3479	case SVGA3D_BLENDOP_ZERO:
3480	return GL_ZERO;
3481	case SVGA3D_BLENDOP_ONE:
3482	return GL_ONE;
3483	case SVGA3D_BLENDOP_SRCCOLOR:
3484	return GL_SRC_COLOR;
3485	case SVGA3D_BLENDOP_INVSRCCOLOR:
3486	return GL_ONE_MINUS_SRC_COLOR;
3487	case SVGA3D_BLENDOP_SRCALPHA:
3488	return GL_SRC_ALPHA;
3489	case SVGA3D_BLENDOP_INVSRCALPHA:
3490	return GL_ONE_MINUS_SRC_ALPHA;
3491	case SVGA3D_BLENDOP_DESTALPHA:
3492	return GL_DST_ALPHA;
3493	case SVGA3D_BLENDOP_INVDESTALPHA:
3494	return GL_ONE_MINUS_DST_ALPHA;
3495	case SVGA3D_BLENDOP_DESTCOLOR:
3496	return GL_DST_COLOR;
3497	case SVGA3D_BLENDOP_INVDESTCOLOR:
3498	return GL_ONE_MINUS_DST_COLOR;
3499	case SVGA3D_BLENDOP_SRCALPHASAT:
3500	return GL_SRC_ALPHA_SATURATE;
3501	case SVGA3D_BLENDOP_BLENDFACTOR:
3502	return GL_CONSTANT_COLOR;
3503	case SVGA3D_BLENDOP_INVBLENDFACTOR:
3504	return GL_ONE_MINUS_CONSTANT_COLOR;
3505	default:
3506	AssertFailed();
3507	return GL_ONE;
3508	}
3509	}
3510
3511	static GLenum vmsvga3dBlendEquation2GL(uint32_t blendEq)
3512	{
3513	switch (blendEq)
3514	{
3515	case SVGA3D_BLENDEQ_ADD:
3516	return GL_FUNC_ADD;
3517	case SVGA3D_BLENDEQ_SUBTRACT:
3518	return GL_FUNC_SUBTRACT;
3519	case SVGA3D_BLENDEQ_REVSUBTRACT:
3520	return GL_FUNC_REVERSE_SUBTRACT;
3521	case SVGA3D_BLENDEQ_MINIMUM:
3522	return GL_MIN;
3523	case SVGA3D_BLENDEQ_MAXIMUM:
3524	return GL_MAX;
3525	default:
3526	/* SVGA3D_BLENDEQ_INVALID means that the render state has not been set, therefore use default. */
3527	AssertMsg(blendEq == SVGA3D_BLENDEQ_INVALID, ("blendEq=%d (%#x)\n", blendEq, blendEq));
3528	return GL_FUNC_ADD;
3529	}
3530	}
3531
3532	static GLenum vmsvgaCmpFunc2GL(uint32_t cmpFunc)
3533	{
3534	switch (cmpFunc)
3535	{
3536	case SVGA3D_CMP_NEVER:
3537	return GL_NEVER;
3538	case SVGA3D_CMP_LESS:
3539	return GL_LESS;
3540	case SVGA3D_CMP_EQUAL:
3541	return GL_EQUAL;
3542	case SVGA3D_CMP_LESSEQUAL:
3543	return GL_LEQUAL;
3544	case SVGA3D_CMP_GREATER:
3545	return GL_GREATER;
3546	case SVGA3D_CMP_NOTEQUAL:
3547	return GL_NOTEQUAL;
3548	case SVGA3D_CMP_GREATEREQUAL:
3549	return GL_GEQUAL;
3550	case SVGA3D_CMP_ALWAYS:
3551	return GL_ALWAYS;
3552	default:
3553	Assert(cmpFunc == SVGA3D_CMP_INVALID);
3554	return GL_LESS;
3555	}
3556	}
3557
3558	static GLenum vmsvgaStencipOp2GL(uint32_t stencilOp)
3559	{
3560	switch (stencilOp)
3561	{
3562	case SVGA3D_STENCILOP_KEEP:
3563	return GL_KEEP;
3564	case SVGA3D_STENCILOP_ZERO:
3565	return GL_ZERO;
3566	case SVGA3D_STENCILOP_REPLACE:
3567	return GL_REPLACE;
3568	case SVGA3D_STENCILOP_INCRSAT:
3569	return GL_INCR_WRAP;
3570	case SVGA3D_STENCILOP_DECRSAT:
3571	return GL_DECR_WRAP;
3572	case SVGA3D_STENCILOP_INVERT:
3573	return GL_INVERT;
3574	case SVGA3D_STENCILOP_INCR:
3575	return GL_INCR;
3576	case SVGA3D_STENCILOP_DECR:
3577	return GL_DECR;
3578	default:
3579	Assert(stencilOp == SVGA3D_STENCILOP_INVALID);
3580	return GL_KEEP;
3581	}
3582	}
3583
3584	int vmsvga3dSetRenderState(PVGASTATE pThis, uint32_t cid, uint32_t cRenderStates, SVGA3dRenderState *pRenderState)
3585	{
3586	uint32_t val = UINT32_MAX; /* Shut up MSC. */
3587	PVMSVGA3DCONTEXT pContext;
3588	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
3589	AssertReturn(pState, VERR_NO_MEMORY);
3590
3591	Log(("vmsvga3dSetRenderState cid=%x cRenderStates=%d\n", cid, cRenderStates));
3592
3593	if ( cid >= pState->cContexts
3594	\|\| pState->papContexts[cid]->id != cid)
3595	{
3596	Log(("vmsvga3dSetRenderState invalid context id!\n"));
3597	return VERR_INVALID_PARAMETER;
3598	}
3599
3600	pContext = pState->papContexts[cid];
3601	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3602
3603	for (unsigned i = 0; i < cRenderStates; i++)
3604	{
3605	GLenum enableCap = ~(GLenum)0;
3606	Log(("vmsvga3dSetRenderState: cid=%x state=%s (%d) val=%x\n", cid, vmsvga3dGetRenderStateName(pRenderState[i].state), pRenderState[i].state, pRenderState[i].uintValue));
3607	/* Save the render state for vm state saving. */
3608	ASSERT_GUEST_RETURN((unsigned)pRenderState[i].state < SVGA3D_RS_MAX, VERR_INVALID_PARAMETER);
3609	pContext->state.aRenderState[pRenderState[i].state] = pRenderState[i];
3610
3611	switch (pRenderState[i].state)
3612	{
3613	case SVGA3D_RS_ZENABLE: /* SVGA3dBool */
3614	enableCap = GL_DEPTH_TEST;
3615	val = pRenderState[i].uintValue;
3616	break;
3617
3618	case SVGA3D_RS_ZWRITEENABLE: /* SVGA3dBool */
3619	glDepthMask(!!pRenderState[i].uintValue);
3620	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3621	break;
3622
3623	case SVGA3D_RS_ALPHATESTENABLE: /* SVGA3dBool */
3624	enableCap = GL_ALPHA_TEST;
3625	val = pRenderState[i].uintValue;
3626	break;
3627
3628	case SVGA3D_RS_DITHERENABLE: /* SVGA3dBool */
3629	enableCap = GL_DITHER;
3630	val = pRenderState[i].uintValue;
3631	break;
3632
3633	case SVGA3D_RS_FOGENABLE: /* SVGA3dBool */
3634	enableCap = GL_FOG;
3635	val = pRenderState[i].uintValue;
3636	break;
3637
3638	case SVGA3D_RS_SPECULARENABLE: /* SVGA3dBool */
3639	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
3640	break;
3641
3642	case SVGA3D_RS_LIGHTINGENABLE: /* SVGA3dBool */
3643	enableCap = GL_LIGHTING;
3644	val = pRenderState[i].uintValue;
3645	break;
3646
3647	case SVGA3D_RS_NORMALIZENORMALS: /* SVGA3dBool */
3648	/* not applicable */
3649	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
3650	break;
3651
3652	case SVGA3D_RS_POINTSPRITEENABLE: /* SVGA3dBool */
3653	enableCap = GL_POINT_SPRITE_ARB;
3654	val = pRenderState[i].uintValue;
3655	break;
3656
3657	case SVGA3D_RS_POINTSIZE: /* float */
3658	/** @todo we need to apply scaling for point sizes below the min or above the max; see Wine) */
3659	if (pRenderState[i].floatValue < pState->caps.flPointSize[0])
3660	pRenderState[i].floatValue = pState->caps.flPointSize[0];
3661	if (pRenderState[i].floatValue > pState->caps.flPointSize[1])
3662	pRenderState[i].floatValue = pState->caps.flPointSize[1];
3663
3664	glPointSize(pRenderState[i].floatValue);
3665	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3666	Log(("SVGA3D_RS_POINTSIZE: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
3667	break;
3668
3669	case SVGA3D_RS_POINTSIZEMIN: /* float */
3670	pState->ext.glPointParameterf(GL_POINT_SIZE_MIN, pRenderState[i].floatValue);
3671	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3672	Log(("SVGA3D_RS_POINTSIZEMIN: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
3673	break;
3674
3675	case SVGA3D_RS_POINTSIZEMAX: /* float */
3676	pState->ext.glPointParameterf(GL_POINT_SIZE_MAX, pRenderState[i].floatValue);
3677	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3678	Log(("SVGA3D_RS_POINTSIZEMAX: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
3679	break;
3680
3681	case SVGA3D_RS_POINTSCALEENABLE: /* SVGA3dBool */
3682	case SVGA3D_RS_POINTSCALE_A: /* float */
3683	case SVGA3D_RS_POINTSCALE_B: /* float */
3684	case SVGA3D_RS_POINTSCALE_C: /* float */
3685	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
3686	break;
3687
3688	case SVGA3D_RS_AMBIENT: /* SVGA3dColor */
3689	{
3690	GLfloat color[4]; /* red, green, blue, alpha */
3691
3692	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &color[0], &color[1], &color[2], &color[3]);
3693
3694	glLightModelfv(GL_LIGHT_MODEL_AMBIENT, color);
3695	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3696	break;
3697	}
3698
3699	case SVGA3D_RS_CLIPPLANEENABLE: /* SVGA3dClipPlanes */
3700	{
3701	AssertCompile(SVGA3D_CLIPPLANE_MAX == (1 << 5));
3702	for (uint32_t j = 0; j <= 5; j++)
3703	{
3704	if (pRenderState[i].uintValue & RT_BIT(j))
3705	glEnable(GL_CLIP_PLANE0 + j);
3706	else
3707	glDisable(GL_CLIP_PLANE0 + j);
3708	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3709	}
3710	break;
3711	}
3712
3713	case SVGA3D_RS_FOGCOLOR: /* SVGA3dColor */
3714	{
3715	GLfloat color[4]; /* red, green, blue, alpha */
3716
3717	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &color[0], &color[1], &color[2], &color[3]);
3718
3719	glFogfv(GL_FOG_COLOR, color);
3720	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3721	break;
3722	}
3723
3724	case SVGA3D_RS_FOGSTART: /* float */
3725	glFogf(GL_FOG_START, pRenderState[i].floatValue);
3726	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3727	break;
3728
3729	case SVGA3D_RS_FOGEND: /* float */
3730	glFogf(GL_FOG_END, pRenderState[i].floatValue);
3731	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3732	break;
3733
3734	case SVGA3D_RS_FOGDENSITY: /* float */
3735	glFogf(GL_FOG_DENSITY, pRenderState[i].floatValue);
3736	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3737	break;
3738
3739	case SVGA3D_RS_RANGEFOGENABLE: /* SVGA3dBool */
3740	glFogi(GL_FOG_COORD_SRC, (pRenderState[i].uintValue) ? GL_FOG_COORD : GL_FRAGMENT_DEPTH);
3741	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3742	break;
3743
3744	case SVGA3D_RS_FOGMODE: /* SVGA3dFogMode */
3745	{
3746	SVGA3dFogMode mode;
3747	mode.uintValue = pRenderState[i].uintValue;
3748
3749	enableCap = GL_FOG_MODE;
3750	switch (mode.s.function)
3751	{
3752	case SVGA3D_FOGFUNC_EXP:
3753	val = GL_EXP;
3754	break;
3755	case SVGA3D_FOGFUNC_EXP2:
3756	val = GL_EXP2;
3757	break;
3758	case SVGA3D_FOGFUNC_LINEAR:
3759	val = GL_LINEAR;
3760	break;
3761	default:
3762	AssertMsgFailedReturn(("Unexpected fog function %d\n", mode.s.function), VERR_INTERNAL_ERROR);
3763	break;
3764	}
3765
3766	/** @todo how to switch between vertex and pixel fog modes??? */
3767	Assert(mode.s.type == SVGA3D_FOGTYPE_PIXEL);
3768	#if 0
3769	/* The fog type determines the render state. */
3770	switch (mode.s.type)
3771	{
3772	case SVGA3D_FOGTYPE_VERTEX:
3773	renderState = D3DRS_FOGVERTEXMODE;
3774	break;
3775	case SVGA3D_FOGTYPE_PIXEL:
3776	renderState = D3DRS_FOGTABLEMODE;
3777	break;
3778	default:
3779	AssertMsgFailedReturn(("Unexpected fog type %d\n", mode.s.type), VERR_INTERNAL_ERROR);
3780	break;
3781	}
3782	#endif
3783
3784	/* Set the fog base to depth or range. */
3785	switch (mode.s.base)
3786	{
3787	case SVGA3D_FOGBASE_DEPTHBASED:
3788	glFogi(GL_FOG_COORD_SRC, GL_FRAGMENT_DEPTH);
3789	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3790	break;
3791	case SVGA3D_FOGBASE_RANGEBASED:
3792	glFogi(GL_FOG_COORD_SRC, GL_FOG_COORD);
3793	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3794	break;
3795	default:
3796	/* ignore */
3797	AssertMsgFailed(("Unexpected fog base %d\n", mode.s.base));
3798	break;
3799	}
3800	break;
3801	}
3802
3803	case SVGA3D_RS_FILLMODE: /* SVGA3dFillMode */
3804	{
3805	SVGA3dFillMode mode;
3806
3807	mode.uintValue = pRenderState[i].uintValue;
3808
3809	switch (mode.s.mode)
3810	{
3811	case SVGA3D_FILLMODE_POINT:
3812	val = GL_POINT;
3813	break;
3814	case SVGA3D_FILLMODE_LINE:
3815	val = GL_LINE;
3816	break;
3817	case SVGA3D_FILLMODE_FILL:
3818	val = GL_FILL;
3819	break;
3820	default:
3821	AssertMsgFailedReturn(("Unexpected fill mode %d\n", mode.s.mode), VERR_INTERNAL_ERROR);
3822	break;
3823	}
3824	/* @note only front and back faces */
3825	Assert(mode.s.face == SVGA3D_FACE_FRONT_BACK);
3826	glPolygonMode(GL_FRONT_AND_BACK, val);
3827	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3828	break;
3829	}
3830
3831	case SVGA3D_RS_SHADEMODE: /* SVGA3dShadeMode */
3832	switch (pRenderState[i].uintValue)
3833	{
3834	case SVGA3D_SHADEMODE_FLAT:
3835	val = GL_FLAT;
3836	break;
3837
3838	case SVGA3D_SHADEMODE_SMOOTH:
3839	val = GL_SMOOTH;
3840	break;
3841
3842	default:
3843	AssertMsgFailedReturn(("Unexpected shade mode %d\n", pRenderState[i].uintValue), VERR_INTERNAL_ERROR);
3844	break;
3845	}
3846
3847	glShadeModel(val);
3848	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3849	break;
3850
3851	case SVGA3D_RS_LINEPATTERN: /* SVGA3dLinePattern */
3852	/* No longer supported by d3d; mesagl comments suggest not all backends support it */
3853	/** @todo */
3854	Log(("WARNING: SVGA3D_RS_LINEPATTERN %x not supported!!\n", pRenderState[i].uintValue));
3855	/*
3856	renderState = D3DRS_LINEPATTERN;
3857	val = pRenderState[i].uintValue;
3858	*/
3859	break;
3860
3861	case SVGA3D_RS_LINEAA: /* SVGA3dBool */
3862	enableCap = GL_LINE_SMOOTH;
3863	val = pRenderState[i].uintValue;
3864	break;
3865
3866	case SVGA3D_RS_LINEWIDTH: /* float */
3867	glLineWidth(pRenderState[i].floatValue);
3868	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3869	break;
3870
3871	case SVGA3D_RS_SEPARATEALPHABLENDENABLE: /* SVGA3dBool */
3872	{
3873	/* Refresh the blending state based on the new enable setting.
3874	* This will take existing states and set them using either glBlend* or glBlend*Separate.
3875	*/
3876	static SVGA3dRenderStateName const saRefreshState[] =
3877	{
3878	SVGA3D_RS_SRCBLEND,
3879	SVGA3D_RS_BLENDEQUATION
3880	};
3881	SVGA3dRenderState renderstate[RT_ELEMENTS(saRefreshState)];
3882	for (uint32_t j = 0; j < RT_ELEMENTS(saRefreshState); ++j)
3883	{
3884	renderstate[j].state = saRefreshState[j];
3885	renderstate[j].uintValue = pContext->state.aRenderState[saRefreshState[j]].uintValue;
3886	}
3887
3888	int rc = vmsvga3dSetRenderState(pThis, cid, 2, renderstate);
3889	AssertRCReturn(rc, rc);
3890
3891	if (pContext->state.aRenderState[SVGA3D_RS_BLENDENABLE].uintValue != 0)
3892	continue; /* Ignore if blend is enabled */
3893	/* Apply SVGA3D_RS_SEPARATEALPHABLENDENABLE as SVGA3D_RS_BLENDENABLE */
3894	} RT_FALL_THRU();
3895
3896	case SVGA3D_RS_BLENDENABLE: /* SVGA3dBool */
3897	enableCap = GL_BLEND;
3898	val = pRenderState[i].uintValue;
3899	break;
3900
3901	case SVGA3D_RS_SRCBLENDALPHA: /* SVGA3dBlendOp */
3902	case SVGA3D_RS_DSTBLENDALPHA: /* SVGA3dBlendOp */
3903	case SVGA3D_RS_SRCBLEND: /* SVGA3dBlendOp */
3904	case SVGA3D_RS_DSTBLEND: /* SVGA3dBlendOp */
3905	{
3906	GLint srcRGB, srcAlpha, dstRGB, dstAlpha;
3907	GLint blendop = vmsvga3dBlendOp2GL(pRenderState[i].uintValue);
3908
3909	glGetIntegerv(GL_BLEND_SRC_RGB, &srcRGB);
3910	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3911	glGetIntegerv(GL_BLEND_DST_RGB, &dstRGB);
3912	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3913	glGetIntegerv(GL_BLEND_DST_ALPHA, &dstAlpha);
3914	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3915	glGetIntegerv(GL_BLEND_SRC_ALPHA, &srcAlpha);
3916	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3917
3918	switch (pRenderState[i].state)
3919	{
3920	case SVGA3D_RS_SRCBLEND:
3921	srcRGB = blendop;
3922	break;
3923	case SVGA3D_RS_DSTBLEND:
3924	dstRGB = blendop;
3925	break;
3926	case SVGA3D_RS_SRCBLENDALPHA:
3927	srcAlpha = blendop;
3928	break;
3929	case SVGA3D_RS_DSTBLENDALPHA:
3930	dstAlpha = blendop;
3931	break;
3932	default:
3933	/* not possible; shut up gcc */
3934	AssertFailed();
3935	break;
3936	}
3937
3938	if (pContext->state.aRenderState[SVGA3D_RS_SEPARATEALPHABLENDENABLE].uintValue != 0)
3939	pState->ext.glBlendFuncSeparate(srcRGB, dstRGB, srcAlpha, dstAlpha);
3940	else
3941	glBlendFunc(srcRGB, dstRGB);
3942	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3943	break;
3944	}
3945
3946	case SVGA3D_RS_BLENDEQUATIONALPHA: /* SVGA3dBlendEquation */
3947	case SVGA3D_RS_BLENDEQUATION: /* SVGA3dBlendEquation */
3948	if (pContext->state.aRenderState[SVGA3D_RS_SEPARATEALPHABLENDENABLE].uintValue != 0)
3949	{
3950	GLenum const modeRGB = vmsvga3dBlendEquation2GL(pContext->state.aRenderState[SVGA3D_RS_BLENDEQUATION].uintValue);
3951	GLenum const modeAlpha = vmsvga3dBlendEquation2GL(pContext->state.aRenderState[SVGA3D_RS_BLENDEQUATIONALPHA].uintValue);
3952	pState->ext.glBlendEquationSeparate(modeRGB, modeAlpha);
3953	}
3954	else
3955	{
3956	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x102
3957	glBlendEquation(vmsvga3dBlendEquation2GL(pRenderState[i].uintValue));
3958	#else
3959	pState->ext.glBlendEquation(vmsvga3dBlendEquation2GL(pRenderState[i].uintValue));
3960	#endif
3961	}
3962	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3963	break;
3964
3965	case SVGA3D_RS_BLENDCOLOR: /* SVGA3dColor */
3966	{
3967	GLfloat red, green, blue, alpha;
3968
3969	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &red, &green, &blue, &alpha);
3970
3971	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x102
3972	glBlendColor(red, green, blue, alpha);
3973	#else
3974	pState->ext.glBlendColor(red, green, blue, alpha);
3975	#endif
3976	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3977	break;
3978	}
3979
3980	case SVGA3D_RS_CULLMODE: /* SVGA3dFace */
3981	{
3982	GLenum mode = GL_BACK; /* default for OpenGL */
3983
3984	switch (pRenderState[i].uintValue)
3985	{
3986	case SVGA3D_FACE_NONE:
3987	break;
3988	case SVGA3D_FACE_FRONT:
3989	mode = GL_FRONT;
3990	break;
3991	case SVGA3D_FACE_BACK:
3992	mode = GL_BACK;
3993	break;
3994	case SVGA3D_FACE_FRONT_BACK:
3995	mode = GL_FRONT_AND_BACK;
3996	break;
3997	default:
3998	AssertMsgFailedReturn(("Unexpected cull mode %d\n", pRenderState[i].uintValue), VERR_INTERNAL_ERROR);
3999	break;
4000	}
4001	enableCap = GL_CULL_FACE;
4002	if (pRenderState[i].uintValue != SVGA3D_FACE_NONE)
4003	{
4004	glCullFace(mode);
4005	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4006	val = 1;
4007	}
4008	else
4009	val = 0;
4010	break;
4011	}
4012
4013	case SVGA3D_RS_ZFUNC: /* SVGA3dCmpFunc */
4014	glDepthFunc(vmsvgaCmpFunc2GL(pRenderState[i].uintValue));
4015	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4016	break;
4017
4018	case SVGA3D_RS_ALPHAFUNC: /* SVGA3dCmpFunc */
4019	{
4020	GLclampf ref;
4021
4022	glGetFloatv(GL_ALPHA_TEST_REF, &ref);
4023	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4024	glAlphaFunc(vmsvgaCmpFunc2GL(pRenderState[i].uintValue), ref);
4025	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4026	break;
4027	}
4028
4029	case SVGA3D_RS_ALPHAREF: /* float (0.0 .. 1.0) */
4030	{
4031	GLint func;
4032
4033	glGetIntegerv(GL_ALPHA_TEST_FUNC, &func);
4034	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4035	glAlphaFunc(func, pRenderState[i].floatValue);
4036	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4037	break;
4038	}
4039
4040	case SVGA3D_RS_STENCILENABLE2SIDED: /* SVGA3dBool */
4041	{
4042	/* Refresh the stencil state based on the new enable setting.
4043	* This will take existing states and set them using either glStencil or glStencil*Separate.
4044	*/
4045	static SVGA3dRenderStateName const saRefreshState[] =
4046	{
4047	SVGA3D_RS_STENCILFUNC,
4048	SVGA3D_RS_STENCILFAIL,
4049	SVGA3D_RS_CCWSTENCILFUNC,
4050	SVGA3D_RS_CCWSTENCILFAIL
4051	};
4052	SVGA3dRenderState renderstate[RT_ELEMENTS(saRefreshState)];
4053	for (uint32_t j = 0; j < RT_ELEMENTS(saRefreshState); ++j)
4054	{
4055	renderstate[j].state = saRefreshState[j];
4056	renderstate[j].uintValue = pContext->state.aRenderState[saRefreshState[j]].uintValue;
4057	}
4058
4059	int rc = vmsvga3dSetRenderState(pThis, cid, RT_ELEMENTS(renderstate), renderstate);
4060	AssertRCReturn(rc, rc);
4061
4062	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE].uintValue != 0)
4063	continue; /* Ignore if stencil is enabled */
4064	/* Apply SVGA3D_RS_STENCILENABLE2SIDED as SVGA3D_RS_STENCILENABLE. */
4065	} RT_FALL_THRU();
4066
4067	case SVGA3D_RS_STENCILENABLE: /* SVGA3dBool */
4068	enableCap = GL_STENCIL_TEST;
4069	val = pRenderState[i].uintValue;
4070	break;
4071
4072	case SVGA3D_RS_STENCILFUNC: /* SVGA3dCmpFunc */
4073	case SVGA3D_RS_STENCILREF: /* uint32_t */
4074	case SVGA3D_RS_STENCILMASK: /* uint32_t */
4075	{
4076	GLint func, ref;
4077	GLuint mask;
4078
4079	/* Query current values to have all parameters for glStencilFunc[Separate]. */
4080	glGetIntegerv(GL_STENCIL_FUNC, &func);
4081	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4082	glGetIntegerv(GL_STENCIL_VALUE_MASK, (GLint *)&mask);
4083	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4084	glGetIntegerv(GL_STENCIL_REF, &ref);
4085	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4086
4087	/* Update the changed value. */
4088	switch (pRenderState[i].state)
4089	{
4090	case SVGA3D_RS_STENCILFUNC: /* SVGA3dCmpFunc */
4091	func = vmsvgaCmpFunc2GL(pRenderState[i].uintValue);
4092	break;
4093
4094	case SVGA3D_RS_STENCILREF: /* uint32_t */
4095	ref = pRenderState[i].uintValue;
4096	break;
4097
4098	case SVGA3D_RS_STENCILMASK: /* uint32_t */
4099	mask = pRenderState[i].uintValue;
4100	break;
4101
4102	default:
4103	/* not possible; shut up gcc */
4104	AssertFailed();
4105	break;
4106	}
4107
4108	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE2SIDED].uintValue != 0)
4109	{
4110	pState->ext.glStencilFuncSeparate(GL_FRONT, func, ref, mask);
4111	}
4112	else
4113	{
4114	glStencilFunc(func, ref, mask);
4115	}
4116	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4117	break;
4118	}
4119
4120	case SVGA3D_RS_STENCILWRITEMASK: /* uint32_t */
4121	glStencilMask(pRenderState[i].uintValue);
4122	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4123	break;
4124
4125	case SVGA3D_RS_STENCILFAIL: /* SVGA3dStencilOp */
4126	case SVGA3D_RS_STENCILZFAIL: /* SVGA3dStencilOp */
4127	case SVGA3D_RS_STENCILPASS: /* SVGA3dStencilOp */
4128	{
4129	GLint sfail, dpfail, dppass;
4130	GLenum const stencilop = vmsvgaStencipOp2GL(pRenderState[i].uintValue);
4131
4132	glGetIntegerv(GL_STENCIL_FAIL, &sfail);
4133	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4134	glGetIntegerv(GL_STENCIL_PASS_DEPTH_FAIL, &dpfail);
4135	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4136	glGetIntegerv(GL_STENCIL_PASS_DEPTH_PASS, &dppass);
4137	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4138
4139	switch (pRenderState[i].state)
4140	{
4141	case SVGA3D_RS_STENCILFAIL: /* SVGA3dStencilOp */
4142	sfail = stencilop;
4143	break;
4144	case SVGA3D_RS_STENCILZFAIL: /* SVGA3dStencilOp */
4145	dpfail = stencilop;
4146	break;
4147	case SVGA3D_RS_STENCILPASS: /* SVGA3dStencilOp */
4148	dppass = stencilop;
4149	break;
4150	default:
4151	/* not possible; shut up gcc */
4152	AssertFailed();
4153	break;
4154	}
4155	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE2SIDED].uintValue != 0)
4156	{
4157	pState->ext.glStencilOpSeparate(GL_FRONT, sfail, dpfail, dppass);
4158	}
4159	else
4160	{
4161	glStencilOp(sfail, dpfail, dppass);
4162	}
4163	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4164	break;
4165	}
4166
4167	case SVGA3D_RS_CCWSTENCILFUNC: /* SVGA3dCmpFunc */
4168	{
4169	GLint ref;
4170	GLuint mask;
4171	GLint const func = vmsvgaCmpFunc2GL(pRenderState[i].uintValue);
4172
4173	/* GL_STENCIL_VALUE_MASK and GL_STENCIL_REF are the same for both GL_FRONT and GL_BACK. */
4174	glGetIntegerv(GL_STENCIL_VALUE_MASK, (GLint *)&mask);
4175	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4176	glGetIntegerv(GL_STENCIL_REF, &ref);
4177	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4178
4179	pState->ext.glStencilFuncSeparate(GL_BACK, func, ref, mask);
4180	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4181	break;
4182	}
4183
4184	case SVGA3D_RS_CCWSTENCILFAIL: /* SVGA3dStencilOp */
4185	case SVGA3D_RS_CCWSTENCILZFAIL: /* SVGA3dStencilOp */
4186	case SVGA3D_RS_CCWSTENCILPASS: /* SVGA3dStencilOp */
4187	{
4188	GLint sfail, dpfail, dppass;
4189	GLenum const stencilop = vmsvgaStencipOp2GL(pRenderState[i].uintValue);
4190
4191	glGetIntegerv(GL_STENCIL_BACK_FAIL, &sfail);
4192	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4193	glGetIntegerv(GL_STENCIL_BACK_PASS_DEPTH_FAIL, &dpfail);
4194	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4195	glGetIntegerv(GL_STENCIL_BACK_PASS_DEPTH_PASS, &dppass);
4196	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4197
4198	switch (pRenderState[i].state)
4199	{
4200	case SVGA3D_RS_CCWSTENCILFAIL: /* SVGA3dStencilOp */
4201	sfail = stencilop;
4202	break;
4203	case SVGA3D_RS_CCWSTENCILZFAIL: /* SVGA3dStencilOp */
4204	dpfail = stencilop;
4205	break;
4206	case SVGA3D_RS_CCWSTENCILPASS: /* SVGA3dStencilOp */
4207	dppass = stencilop;
4208	break;
4209	default:
4210	/* not possible; shut up gcc */
4211	AssertFailed();
4212	break;
4213	}
4214	pState->ext.glStencilOpSeparate(GL_BACK, sfail, dpfail, dppass);
4215	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4216	break;
4217	}
4218
4219	case SVGA3D_RS_ZBIAS: /* float */
4220	/** @todo unknown meaning; depth bias is not identical
4221	renderState = D3DRS_DEPTHBIAS;
4222	val = pRenderState[i].uintValue;
4223	*/
4224	Log(("vmsvga3dSetRenderState: WARNING unsupported SVGA3D_RS_ZBIAS\n"));
4225	break;
4226
4227	case SVGA3D_RS_DEPTHBIAS: /* float */
4228	{
4229	GLfloat factor;
4230
4231	/** @todo not sure if the d3d & ogl definitions are identical. */
4232
4233	/* Do not change the factor part. */
4234	glGetFloatv(GL_POLYGON_OFFSET_FACTOR, &factor);
4235	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4236
4237	glPolygonOffset(factor, pRenderState[i].floatValue);
4238	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4239	break;
4240	}
4241
4242	case SVGA3D_RS_SLOPESCALEDEPTHBIAS: /* float */
4243	{
4244	GLfloat units;
4245
4246	/** @todo not sure if the d3d & ogl definitions are identical. */
4247
4248	/* Do not change the factor part. */
4249	glGetFloatv(GL_POLYGON_OFFSET_UNITS, &units);
4250	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4251
4252	glPolygonOffset(pRenderState[i].floatValue, units);
4253	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4254	break;
4255	}
4256
4257	case SVGA3D_RS_COLORWRITEENABLE: /* SVGA3dColorMask */
4258	{
4259	GLboolean red, green, blue, alpha;
4260	SVGA3dColorMask mask;
4261
4262	mask.uintValue = pRenderState[i].uintValue;
4263
4264	red = mask.s.red;
4265	green = mask.s.green;
4266	blue = mask.s.blue;
4267	alpha = mask.s.alpha;
4268
4269	glColorMask(red, green, blue, alpha);
4270	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4271	break;
4272	}
4273
4274	case SVGA3D_RS_COLORWRITEENABLE1: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
4275	case SVGA3D_RS_COLORWRITEENABLE2: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
4276	case SVGA3D_RS_COLORWRITEENABLE3: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
4277	Log(("vmsvga3dSetRenderState: WARNING SVGA3D_RS_COLORWRITEENABLEx not supported!!\n"));
4278	break;
4279
4280	case SVGA3D_RS_SCISSORTESTENABLE: /* SVGA3dBool */
4281	enableCap = GL_SCISSOR_TEST;
4282	val = pRenderState[i].uintValue;
4283	break;
4284
4285	#if 0
4286	case SVGA3D_RS_DIFFUSEMATERIALSOURCE: /* SVGA3dVertexMaterial */
4287	AssertCompile(D3DMCS_COLOR2 == SVGA3D_VERTEXMATERIAL_SPECULAR);
4288	renderState = D3DRS_DIFFUSEMATERIALSOURCE;
4289	val = pRenderState[i].uintValue;
4290	break;
4291
4292	case SVGA3D_RS_SPECULARMATERIALSOURCE: /* SVGA3dVertexMaterial */
4293	renderState = D3DRS_SPECULARMATERIALSOURCE;
4294	val = pRenderState[i].uintValue;
4295	break;
4296
4297	case SVGA3D_RS_AMBIENTMATERIALSOURCE: /* SVGA3dVertexMaterial */
4298	renderState = D3DRS_AMBIENTMATERIALSOURCE;
4299	val = pRenderState[i].uintValue;
4300	break;
4301
4302	case SVGA3D_RS_EMISSIVEMATERIALSOURCE: /* SVGA3dVertexMaterial */
4303	renderState = D3DRS_EMISSIVEMATERIALSOURCE;
4304	val = pRenderState[i].uintValue;
4305	break;
4306	#endif
4307
4308	case SVGA3D_RS_WRAP3: /* SVGA3dWrapFlags */
4309	case SVGA3D_RS_WRAP4: /* SVGA3dWrapFlags */
4310	case SVGA3D_RS_WRAP5: /* SVGA3dWrapFlags */
4311	case SVGA3D_RS_WRAP6: /* SVGA3dWrapFlags */
4312	case SVGA3D_RS_WRAP7: /* SVGA3dWrapFlags */
4313	case SVGA3D_RS_WRAP8: /* SVGA3dWrapFlags */
4314	case SVGA3D_RS_WRAP9: /* SVGA3dWrapFlags */
4315	case SVGA3D_RS_WRAP10: /* SVGA3dWrapFlags */
4316	case SVGA3D_RS_WRAP11: /* SVGA3dWrapFlags */
4317	case SVGA3D_RS_WRAP12: /* SVGA3dWrapFlags */
4318	case SVGA3D_RS_WRAP13: /* SVGA3dWrapFlags */
4319	case SVGA3D_RS_WRAP14: /* SVGA3dWrapFlags */
4320	case SVGA3D_RS_WRAP15: /* SVGA3dWrapFlags */
4321	Log(("vmsvga3dSetRenderState: WARNING unsupported SVGA3D_WRAPx (x >= 3)\n"));
4322	break;
4323
4324	case SVGA3D_RS_LASTPIXEL: /* SVGA3dBool */
4325	case SVGA3D_RS_TWEENFACTOR: /* float */
4326	case SVGA3D_RS_INDEXEDVERTEXBLENDENABLE: /* SVGA3dBool */
4327	case SVGA3D_RS_VERTEXBLEND: /* SVGA3dVertexBlendFlags */
4328	Log(("vmsvga3dSetRenderState: WARNING not applicable!!\n"));
4329	break;
4330
4331	case SVGA3D_RS_MULTISAMPLEANTIALIAS: /* SVGA3dBool */
4332	enableCap = GL_MULTISAMPLE;
4333	val = pRenderState[i].uintValue;
4334	break;
4335
4336	case SVGA3D_RS_MULTISAMPLEMASK: /* uint32_t */
4337	case SVGA3D_RS_ANTIALIASEDLINEENABLE: /* SVGA3dBool */
4338	Log(("vmsvga3dSetRenderState: WARNING not applicable??!!\n"));
4339	break;
4340
4341	case SVGA3D_RS_COORDINATETYPE: /* SVGA3dCoordinateType */
4342	Assert(pRenderState[i].uintValue == SVGA3D_COORDINATE_LEFTHANDED);
4343	/** @todo setup a view matrix to scale the world space by -1 in the z-direction for right handed coordinates. */
4344	/*
4345	renderState = D3DRS_COORDINATETYPE;
4346	val = pRenderState[i].uintValue;
4347	*/
4348	break;
4349
4350	case SVGA3D_RS_FRONTWINDING: /* SVGA3dFrontWinding */
4351	Assert(pRenderState[i].uintValue == SVGA3D_FRONTWINDING_CW);
4352	/* Invert the selected mode because of y-inversion (?) */
4353	glFrontFace((pRenderState[i].uintValue != SVGA3D_FRONTWINDING_CW) ? GL_CW : GL_CCW);
4354	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4355	break;
4356
4357	case SVGA3D_RS_OUTPUTGAMMA: /* float */
4358	//AssertFailed();
4359	/*
4360	D3DRS_SRGBWRITEENABLE ??
4361	renderState = D3DRS_OUTPUTGAMMA;
4362	val = pRenderState[i].uintValue;
4363	*/
4364	break;
4365
4366	#if 0
4367
4368	case SVGA3D_RS_VERTEXMATERIALENABLE: /* SVGA3dBool */
4369	//AssertFailed();
4370	renderState = D3DRS_INDEXEDVERTEXBLENDENABLE; /* correct?? */
4371	val = pRenderState[i].uintValue;
4372	break;
4373
4374	case SVGA3D_RS_TEXTUREFACTOR: /* SVGA3dColor */
4375	renderState = D3DRS_TEXTUREFACTOR;
4376	val = pRenderState[i].uintValue;
4377	break;
4378
4379	case SVGA3D_RS_LOCALVIEWER: /* SVGA3dBool */
4380	renderState = D3DRS_LOCALVIEWER;
4381	val = pRenderState[i].uintValue;
4382	break;
4383
4384	case SVGA3D_RS_ZVISIBLE: /* SVGA3dBool */
4385	AssertFailed();
4386	/*
4387	renderState = D3DRS_ZVISIBLE;
4388	val = pRenderState[i].uintValue;
4389	*/
4390	break;
4391
4392	case SVGA3D_RS_CLIPPING: /* SVGA3dBool */
4393	renderState = D3DRS_CLIPPING;
4394	val = pRenderState[i].uintValue;
4395	break;
4396
4397	case SVGA3D_RS_WRAP0: /* SVGA3dWrapFlags */
4398	glTexParameter GL_TEXTURE_WRAP_S
4399	Assert(SVGA3D_WRAPCOORD_3 == D3DWRAPCOORD_3);
4400	renderState = D3DRS_WRAP0;
4401	val = pRenderState[i].uintValue;
4402	break;
4403
4404	case SVGA3D_RS_WRAP1: /* SVGA3dWrapFlags */
4405	glTexParameter GL_TEXTURE_WRAP_T
4406	renderState = D3DRS_WRAP1;
4407	val = pRenderState[i].uintValue;
4408	break;
4409
4410	case SVGA3D_RS_WRAP2: /* SVGA3dWrapFlags */
4411	glTexParameter GL_TEXTURE_WRAP_R
4412	renderState = D3DRS_WRAP2;
4413	val = pRenderState[i].uintValue;
4414	break;
4415
4416
4417	case SVGA3D_RS_SEPARATEALPHABLENDENABLE: /* SVGA3dBool */
4418	renderState = D3DRS_SEPARATEALPHABLENDENABLE;
4419	val = pRenderState[i].uintValue;
4420	break;
4421
4422
4423	case SVGA3D_RS_BLENDEQUATIONALPHA: /* SVGA3dBlendEquation */
4424	renderState = D3DRS_BLENDOPALPHA;
4425	val = pRenderState[i].uintValue;
4426	break;
4427
4428	case SVGA3D_RS_TRANSPARENCYANTIALIAS: /* SVGA3dTransparencyAntialiasType */
4429	AssertFailed();
4430	/*
4431	renderState = D3DRS_TRANSPARENCYANTIALIAS;
4432	val = pRenderState[i].uintValue;
4433	*/
4434	break;
4435
4436	#endif
4437	default:
4438	AssertFailed();
4439	break;
4440	}
4441
4442	if (enableCap != ~(GLenum)0)
4443	{
4444	if (val)
4445	glEnable(enableCap);
4446	else
4447	glDisable(enableCap);
4448	}
4449	}
4450
4451	return VINF_SUCCESS;
4452	}
4453
4454	int vmsvga3dSetRenderTarget(PVGASTATE pThis, uint32_t cid, SVGA3dRenderTargetType type, SVGA3dSurfaceImageId target)
4455	{
4456	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
4457
4458	AssertReturn(pState, VERR_NO_MEMORY);
4459	AssertReturn((unsigned)type < SVGA3D_RT_MAX, VERR_INVALID_PARAMETER);
4460
4461	LogFunc(("cid=%x type=%x sid=%x\n", cid, type, target.sid));
4462
4463	PVMSVGA3DCONTEXT pContext;
4464	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4465	AssertRCReturn(rc, rc);
4466
4467	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4468
4469	/* Save for vm state save/restore. */
4470	pContext->state.aRenderTargets[type] = target.sid;
4471
4472	if (target.sid == SVGA3D_INVALID_ID)
4473	{
4474	/* Disable render target. */
4475	switch (type)
4476	{
4477	case SVGA3D_RT_DEPTH:
4478	case SVGA3D_RT_STENCIL:
4479	pState->ext.glFramebufferRenderbuffer(GL_FRAMEBUFFER, (type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
4480	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4481	break;
4482
4483	case SVGA3D_RT_COLOR0:
4484	case SVGA3D_RT_COLOR1:
4485	case SVGA3D_RT_COLOR2:
4486	case SVGA3D_RT_COLOR3:
4487	case SVGA3D_RT_COLOR4:
4488	case SVGA3D_RT_COLOR5:
4489	case SVGA3D_RT_COLOR6:
4490	case SVGA3D_RT_COLOR7:
4491	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + type - SVGA3D_RT_COLOR0, 0, 0, 0);
4492	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4493	break;
4494
4495	default:
4496	AssertFailedReturn(VERR_INVALID_PARAMETER);
4497	}
4498	return VINF_SUCCESS;
4499	}
4500
4501	PVMSVGA3DSURFACE pRenderTarget;
4502	rc = vmsvga3dSurfaceFromSid(pState, target.sid, &pRenderTarget);
4503	AssertRCReturn(rc, rc);
4504
4505	switch (type)
4506	{
4507	case SVGA3D_RT_DEPTH:
4508	case SVGA3D_RT_STENCIL:
4509	#if 1
4510	/* A texture surface can be used as a render target to fill it and later on used as a texture. */
4511	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
4512	{
4513	LogFunc(("create depth texture to be used as render target; surface id=%x type=%d format=%d -> create texture\n",
4514	target.sid, pRenderTarget->surfaceFlags, pRenderTarget->format));
4515	rc = vmsvga3dBackCreateTexture(pState, pContext, cid, pRenderTarget);
4516	AssertRCReturn(rc, rc);
4517	}
4518
4519	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
4520	Assert(!pRenderTarget->fDirty);
4521
4522	pRenderTarget->surfaceFlags \|= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
4523
4524	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER,
4525	(type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT,
4526	GL_TEXTURE_2D, pRenderTarget->oglId.texture, target.mipmap);
4527	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4528	#else
4529	AssertReturn(target.mipmap == 0, VERR_INVALID_PARAMETER);
4530	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
4531	{
4532	Log(("vmsvga3dSetRenderTarget: create renderbuffer to be used as render target; surface id=%x type=%d format=%d\n", target.sid, pRenderTarget->surfaceFlags, pRenderTarget->internalFormatGL));
4533	pContext = &pState->SharedCtx;
4534	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4535
4536	pState->ext.glGenRenderbuffers(1, &pRenderTarget->oglId.renderbuffer);
4537	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4538	pSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_RENDERBUFFER;
4539
4540	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
4541	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4542
4543	pState->ext.glRenderbufferStorage(GL_RENDERBUFFER,
4544	pRenderTarget->internalFormatGL,
4545	pRenderTarget->pMipmapLevels[0].mipmapSize.width,
4546	pRenderTarget->pMipmapLevels[0].mipmapSize.height);
4547	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4548
4549	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, OPENGL_INVALID_ID);
4550	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4551
4552	pContext = pState->papContexts[cid];
4553	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4554	pRenderTarget->idWeakContextAssociation = cid;
4555	}
4556
4557	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
4558	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4559	Assert(!pRenderTarget->fDirty);
4560	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
4561
4562	pRenderTarget->surfaceFlags \|= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
4563
4564	pState->ext.glFramebufferRenderbuffer(GL_FRAMEBUFFER,
4565	(type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT,
4566	GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
4567	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4568	#endif
4569	break;
4570
4571	case SVGA3D_RT_COLOR0:
4572	case SVGA3D_RT_COLOR1:
4573	case SVGA3D_RT_COLOR2:
4574	case SVGA3D_RT_COLOR3:
4575	case SVGA3D_RT_COLOR4:
4576	case SVGA3D_RT_COLOR5:
4577	case SVGA3D_RT_COLOR6:
4578	case SVGA3D_RT_COLOR7:
4579	{
4580	/* A texture surface can be used as a render target to fill it and later on used as a texture. */
4581	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
4582	{
4583	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));
4584	rc = vmsvga3dBackCreateTexture(pState, pContext, cid, pRenderTarget);
4585	AssertRCReturn(rc, rc);
4586	}
4587
4588	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
4589	Assert(!pRenderTarget->fDirty);
4590
4591	pRenderTarget->surfaceFlags \|= SVGA3D_SURFACE_HINT_RENDERTARGET;
4592
4593	GLenum textarget;
4594	if (pRenderTarget->surfaceFlags & SVGA3D_SURFACE_CUBEMAP)
4595	textarget = vmsvga3dCubemapFaceFromIndex(target.face);
4596	else
4597	textarget = GL_TEXTURE_2D;
4598	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + type - SVGA3D_RT_COLOR0,
4599	textarget, pRenderTarget->oglId.texture, target.mipmap);
4600	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4601
4602	#ifdef DEBUG
4603	GLenum status = pState->ext.glCheckFramebufferStatus(GL_FRAMEBUFFER);
4604	if (status != GL_FRAMEBUFFER_COMPLETE)
4605	Log(("vmsvga3dSetRenderTarget: WARNING: glCheckFramebufferStatus returned %x\n", status));
4606	#endif
4607	/** @todo use glDrawBuffers too? */
4608	break;
4609	}
4610
4611	default:
4612	AssertFailedReturn(VERR_INVALID_PARAMETER);
4613	}
4614
4615	return VINF_SUCCESS;
4616	}
4617
4618	#if 0
4619	/**
4620	* Convert SVGA texture combiner value to its D3D equivalent
4621	*/
4622	static DWORD vmsvga3dTextureCombiner2D3D(uint32_t value)
4623	{
4624	switch (value)
4625	{
4626	case SVGA3D_TC_DISABLE:
4627	return D3DTOP_DISABLE;
4628	case SVGA3D_TC_SELECTARG1:
4629	return D3DTOP_SELECTARG1;
4630	case SVGA3D_TC_SELECTARG2:
4631	return D3DTOP_SELECTARG2;
4632	case SVGA3D_TC_MODULATE:
4633	return D3DTOP_MODULATE;
4634	case SVGA3D_TC_ADD:
4635	return D3DTOP_ADD;
4636	case SVGA3D_TC_ADDSIGNED:
4637	return D3DTOP_ADDSIGNED;
4638	case SVGA3D_TC_SUBTRACT:
4639	return D3DTOP_SUBTRACT;
4640	case SVGA3D_TC_BLENDTEXTUREALPHA:
4641	return D3DTOP_BLENDTEXTUREALPHA;
4642	case SVGA3D_TC_BLENDDIFFUSEALPHA:
4643	return D3DTOP_BLENDDIFFUSEALPHA;
4644	case SVGA3D_TC_BLENDCURRENTALPHA:
4645	return D3DTOP_BLENDCURRENTALPHA;
4646	case SVGA3D_TC_BLENDFACTORALPHA:
4647	return D3DTOP_BLENDFACTORALPHA;
4648	case SVGA3D_TC_MODULATE2X:
4649	return D3DTOP_MODULATE2X;
4650	case SVGA3D_TC_MODULATE4X:
4651	return D3DTOP_MODULATE4X;
4652	case SVGA3D_TC_DSDT:
4653	AssertFailed(); /** @todo ??? */
4654	return D3DTOP_DISABLE;
4655	case SVGA3D_TC_DOTPRODUCT3:
4656	return D3DTOP_DOTPRODUCT3;
4657	case SVGA3D_TC_BLENDTEXTUREALPHAPM:
4658	return D3DTOP_BLENDTEXTUREALPHAPM;
4659	case SVGA3D_TC_ADDSIGNED2X:
4660	return D3DTOP_ADDSIGNED2X;
4661	case SVGA3D_TC_ADDSMOOTH:
4662	return D3DTOP_ADDSMOOTH;
4663	case SVGA3D_TC_PREMODULATE:
4664	return D3DTOP_PREMODULATE;
4665	case SVGA3D_TC_MODULATEALPHA_ADDCOLOR:
4666	return D3DTOP_MODULATEALPHA_ADDCOLOR;
4667	case SVGA3D_TC_MODULATECOLOR_ADDALPHA:
4668	return D3DTOP_MODULATECOLOR_ADDALPHA;
4669	case SVGA3D_TC_MODULATEINVALPHA_ADDCOLOR:
4670	return D3DTOP_MODULATEINVALPHA_ADDCOLOR;
4671	case SVGA3D_TC_MODULATEINVCOLOR_ADDALPHA:
4672	return D3DTOP_MODULATEINVCOLOR_ADDALPHA;
4673	case SVGA3D_TC_BUMPENVMAPLUMINANCE:
4674	return D3DTOP_BUMPENVMAPLUMINANCE;
4675	case SVGA3D_TC_MULTIPLYADD:
4676	return D3DTOP_MULTIPLYADD;
4677	case SVGA3D_TC_LERP:
4678	return D3DTOP_LERP;
4679	default:
4680	AssertFailed();
4681	return D3DTOP_DISABLE;
4682	}
4683	}
4684
4685	/**
4686	* Convert SVGA texture arg data value to its D3D equivalent
4687	*/
4688	static DWORD vmsvga3dTextureArgData2D3D(uint32_t value)
4689	{
4690	switch (value)
4691	{
4692	case SVGA3D_TA_CONSTANT:
4693	return D3DTA_CONSTANT;
4694	case SVGA3D_TA_PREVIOUS:
4695	return D3DTA_CURRENT; /* current = previous */
4696	case SVGA3D_TA_DIFFUSE:
4697	return D3DTA_DIFFUSE;
4698	case SVGA3D_TA_TEXTURE:
4699	return D3DTA_TEXTURE;
4700	case SVGA3D_TA_SPECULAR:
4701	return D3DTA_SPECULAR;
4702	default:
4703	AssertFailed();
4704	return 0;
4705	}
4706	}
4707
4708	/**
4709	* Convert SVGA texture transform flag value to its D3D equivalent
4710	*/
4711	static DWORD vmsvga3dTextTransformFlags2D3D(uint32_t value)
4712	{
4713	switch (value)
4714	{
4715	case SVGA3D_TEX_TRANSFORM_OFF:
4716	return D3DTTFF_DISABLE;
4717	case SVGA3D_TEX_TRANSFORM_S:
4718	return D3DTTFF_COUNT1; /** @todo correct? */
4719	case SVGA3D_TEX_TRANSFORM_T:
4720	return D3DTTFF_COUNT2; /** @todo correct? */
4721	case SVGA3D_TEX_TRANSFORM_R:
4722	return D3DTTFF_COUNT3; /** @todo correct? */
4723	case SVGA3D_TEX_TRANSFORM_Q:
4724	return D3DTTFF_COUNT4; /** @todo correct? */
4725	case SVGA3D_TEX_PROJECTED:
4726	return D3DTTFF_PROJECTED;
4727	default:
4728	AssertFailed();
4729	return 0;
4730	}
4731	}
4732	#endif
4733
4734	static GLenum vmsvga3dTextureAddress2OGL(SVGA3dTextureAddress value)
4735	{
4736	switch (value)
4737	{
4738	case SVGA3D_TEX_ADDRESS_WRAP:
4739	return GL_REPEAT;
4740	case SVGA3D_TEX_ADDRESS_MIRROR:
4741	return GL_MIRRORED_REPEAT;
4742	case SVGA3D_TEX_ADDRESS_CLAMP:
4743	return GL_CLAMP_TO_EDGE;
4744	case SVGA3D_TEX_ADDRESS_BORDER:
4745	return GL_CLAMP_TO_BORDER;
4746	case SVGA3D_TEX_ADDRESS_MIRRORONCE:
4747	AssertFailed();
4748	return GL_CLAMP_TO_EDGE_SGIS; /** @todo correct? */
4749
4750	case SVGA3D_TEX_ADDRESS_EDGE:
4751	case SVGA3D_TEX_ADDRESS_INVALID:
4752	default:
4753	AssertFailed();
4754	return GL_REPEAT; /* default */
4755	}
4756	}
4757
4758	static GLenum vmsvga3dTextureFilter2OGL(SVGA3dTextureFilter value)
4759	{
4760	switch (value)
4761	{
4762	case SVGA3D_TEX_FILTER_NONE:
4763	case SVGA3D_TEX_FILTER_LINEAR:
4764	return GL_LINEAR;
4765	case SVGA3D_TEX_FILTER_NEAREST:
4766	return GL_NEAREST;
4767	case SVGA3D_TEX_FILTER_ANISOTROPIC:
4768	/** @todo */
4769	case SVGA3D_TEX_FILTER_FLATCUBIC: // Deprecated, not implemented
4770	case SVGA3D_TEX_FILTER_GAUSSIANCUBIC: // Deprecated, not implemented
4771	case SVGA3D_TEX_FILTER_PYRAMIDALQUAD: // Not currently implemented
4772	case SVGA3D_TEX_FILTER_GAUSSIANQUAD: // Not currently implemented
4773	default:
4774	AssertFailed();
4775	return GL_LINEAR; /* default */
4776	}
4777	}
4778
4779	uint32_t vmsvga3dSVGA3dColor2RGBA(SVGA3dColor value)
4780	{
4781	/* flip the red and blue bytes */
4782	uint8_t blue = value & 0xff;
4783	uint8_t red = (value >> 16) & 0xff;
4784	return (value & 0xff00ff00) \| red \| (blue << 16);
4785	}
4786
4787	int vmsvga3dSetTextureState(PVGASTATE pThis, uint32_t cid, uint32_t cTextureStates, SVGA3dTextureState *pTextureState)
4788	{
4789	GLenum val = ~(GLenum)0; /* Shut up MSC. */
4790	GLenum currentStage = ~(GLenum)0;
4791	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
4792	AssertReturn(pState, VERR_NO_MEMORY);
4793
4794	Log(("vmsvga3dSetTextureState %x cTextureState=%d\n", cid, cTextureStates));
4795
4796	PVMSVGA3DCONTEXT pContext;
4797	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4798	AssertRCReturn(rc, rc);
4799
4800	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4801
4802	/* Which texture is active for the current stage. Needed to use right OpenGL target when setting parameters. */
4803	PVMSVGA3DSURFACE pCurrentTextureSurface = NULL;
4804
4805	for (uint32_t i = 0; i < cTextureStates; ++i)
4806	{
4807	GLenum textureType = ~(GLenum)0;
4808	#if 0
4809	GLenum samplerType = ~(GLenum)0;
4810	#endif
4811
4812	LogFunc(("cid=%x stage=%d type=%s (%x) val=%x\n",
4813	cid, pTextureState[i].stage, vmsvga3dTextureStateToString(pTextureState[i].name), pTextureState[i].name, pTextureState[i].value));
4814
4815	/* Record the texture state for vm state saving. */
4816	if ( pTextureState[i].stage < RT_ELEMENTS(pContext->state.aTextureStates)
4817	&& (unsigned)pTextureState[i].name < RT_ELEMENTS(pContext->state.aTextureStates[0]))
4818	{
4819	pContext->state.aTextureStates[pTextureState[i].stage][pTextureState[i].name] = pTextureState[i];
4820	}
4821
4822	/* Activate the right texture unit for subsequent texture state changes. */
4823	if (pTextureState[i].stage != currentStage \|\| i == 0)
4824	{
4825	/** @todo Is this the appropriate limit for all kinds of textures? It is the
4826	* size of aSidActiveTextures and for binding/unbinding we cannot exceed it. */
4827	if (pTextureState[i].stage < RT_ELEMENTS(pContext->state.aTextureStates))
4828	{
4829	pState->ext.glActiveTexture(GL_TEXTURE0 + pTextureState[i].stage);
4830	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4831	currentStage = pTextureState[i].stage;
4832	}
4833	else
4834	{
4835	AssertMsgFailed(("pTextureState[%d].stage=%#x name=%#x\n", i, pTextureState[i].stage, pTextureState[i].name));
4836	continue;
4837	}
4838
4839	if (pContext->aSidActiveTextures[currentStage] != SVGA3D_INVALID_ID)
4840	{
4841	rc = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[currentStage], &pCurrentTextureSurface);
4842	AssertRCReturn(rc, rc);
4843	}
4844	else
4845	pCurrentTextureSurface = NULL; /* Make sure that no stale pointer is used. */
4846	}
4847
4848	switch (pTextureState[i].name)
4849	{
4850	case SVGA3D_TS_BUMPENVMAT00: /* float */
4851	case SVGA3D_TS_BUMPENVMAT01: /* float */
4852	case SVGA3D_TS_BUMPENVMAT10: /* float */
4853	case SVGA3D_TS_BUMPENVMAT11: /* float */
4854	case SVGA3D_TS_BUMPENVLSCALE: /* float */
4855	case SVGA3D_TS_BUMPENVLOFFSET: /* float */
4856	Log(("vmsvga3dSetTextureState: bump mapping texture options not supported!!\n"));
4857	break;
4858
4859	case SVGA3D_TS_COLOROP: /* SVGA3dTextureCombiner */
4860	case SVGA3D_TS_COLORARG0: /* SVGA3dTextureArgData */
4861	case SVGA3D_TS_COLORARG1: /* SVGA3dTextureArgData */
4862	case SVGA3D_TS_COLORARG2: /* SVGA3dTextureArgData */
4863	case SVGA3D_TS_ALPHAOP: /* SVGA3dTextureCombiner */
4864	case SVGA3D_TS_ALPHAARG0: /* SVGA3dTextureArgData */
4865	case SVGA3D_TS_ALPHAARG1: /* SVGA3dTextureArgData */
4866	case SVGA3D_TS_ALPHAARG2: /* SVGA3dTextureArgData */
4867	/** @todo not used by MesaGL */
4868	Log(("vmsvga3dSetTextureState: colorop/alphaop not yet supported!!\n"));
4869	break;
4870	#if 0
4871
4872	case SVGA3D_TS_TEXCOORDINDEX: /* uint32_t */
4873	textureType = D3DTSS_TEXCOORDINDEX;
4874	val = pTextureState[i].value;
4875	break;
4876
4877	case SVGA3D_TS_TEXTURETRANSFORMFLAGS: /* SVGA3dTexTransformFlags */
4878	textureType = D3DTSS_TEXTURETRANSFORMFLAGS;
4879	val = vmsvga3dTextTransformFlags2D3D(pTextureState[i].value);
4880	break;
4881	#endif
4882
4883	case SVGA3D_TS_BIND_TEXTURE: /* SVGA3dSurfaceId */
4884	{
4885	uint32_t const sid = pTextureState[i].value;
4886
4887	Log(("SVGA3D_TS_BIND_TEXTURE: stage %d, texture sid=%x replacing sid=%x\n",
4888	currentStage, sid, pContext->aSidActiveTextures[currentStage]));
4889
4890	/* Only if texture actually changed. */ /// @todo needs testing.
4891	if (pContext->aSidActiveTextures[currentStage] != sid)
4892	{
4893	if (pCurrentTextureSurface)
4894	{
4895	/* Unselect the currently associated texture. */
4896	glBindTexture(pCurrentTextureSurface->targetGL, 0);
4897	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4898
4899	if (currentStage < 8)
4900	{
4901	/* Necessary for the fixed pipeline. */
4902	glDisable(pCurrentTextureSurface->targetGL);
4903	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4904	}
4905
4906	pCurrentTextureSurface = NULL;
4907	}
4908
4909	if (sid == SVGA3D_INVALID_ID)
4910	{
4911	Assert(pCurrentTextureSurface == NULL);
4912	}
4913	else
4914	{
4915	PVMSVGA3DSURFACE pSurface;
4916	rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
4917	AssertRCReturn(rc, rc);
4918
4919	Log(("SVGA3D_TS_BIND_TEXTURE: stage %d, texture sid=%x (%d,%d) replacing sid=%x\n",
4920	currentStage, sid, pSurface->pMipmapLevels[0].mipmapSize.width,
4921	pSurface->pMipmapLevels[0].mipmapSize.height, pContext->aSidActiveTextures[currentStage]));
4922
4923	if (pSurface->oglId.texture == OPENGL_INVALID_ID)
4924	{
4925	Log(("CreateTexture (%d,%d) levels=%d\n",
4926	pSurface->pMipmapLevels[0].mipmapSize.width, pSurface->pMipmapLevels[0].mipmapSize.height, pSurface->faces[0].numMipLevels));
4927	rc = vmsvga3dBackCreateTexture(pState, pContext, cid, pSurface);
4928	AssertRCReturn(rc, rc);
4929	}
4930
4931	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
4932	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4933
4934	if (currentStage < 8)
4935	{
4936	/* Necessary for the fixed pipeline. */
4937	glEnable(pSurface->targetGL);
4938	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4939	}
4940
4941	/* Remember the currently active texture. */
4942	pCurrentTextureSurface = pSurface;
4943
4944	/* Recreate the texture state as glBindTexture resets them all (sigh). */
4945	for (uint32_t iStage = 0; iStage < RT_ELEMENTS(pContext->state.aTextureStates); iStage++)
4946	{
4947	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aTextureStates[0]); j++)
4948	{
4949	SVGA3dTextureState *pTextureStateIter = &pContext->state.aTextureStates[iStage][j];
4950
4951	if ( pTextureStateIter->name != SVGA3D_TS_INVALID
4952	&& pTextureStateIter->name != SVGA3D_TS_BIND_TEXTURE)
4953	vmsvga3dSetTextureState(pThis, pContext->id, 1, pTextureStateIter);
4954	}
4955	}
4956	}
4957
4958	pContext->aSidActiveTextures[currentStage] = sid;
4959	}
4960
4961	/* Finished; continue with the next one. */
4962	continue;
4963	}
4964
4965	case SVGA3D_TS_ADDRESSW: /* SVGA3dTextureAddress */
4966	textureType = GL_TEXTURE_WRAP_R; /* R = W */
4967	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
4968	break;
4969
4970	case SVGA3D_TS_ADDRESSU: /* SVGA3dTextureAddress */
4971	textureType = GL_TEXTURE_WRAP_S; /* S = U */
4972	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
4973	break;
4974
4975	case SVGA3D_TS_ADDRESSV: /* SVGA3dTextureAddress */
4976	textureType = GL_TEXTURE_WRAP_T; /* T = V */
4977	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
4978	break;
4979
4980	case SVGA3D_TS_MIPFILTER: /* SVGA3dTextureFilter */
4981	case SVGA3D_TS_MINFILTER: /* SVGA3dTextureFilter */
4982	{
4983	uint32_t mipFilter = pContext->state.aTextureStates[currentStage][SVGA3D_TS_MIPFILTER].value;
4984	uint32_t minFilter = pContext->state.aTextureStates[currentStage][SVGA3D_TS_MINFILTER].value;
4985
4986	/* If SVGA3D_TS_MIPFILTER is set to NONE, then use SVGA3D_TS_MIPFILTER, otherwise SVGA3D_TS_MIPFILTER enables mipmap minification. */
4987	textureType = GL_TEXTURE_MIN_FILTER;
4988	if (mipFilter != SVGA3D_TEX_FILTER_NONE)
4989	{
4990	if (minFilter == SVGA3D_TEX_FILTER_NEAREST)
4991	{
4992	if (mipFilter == SVGA3D_TEX_FILTER_LINEAR)
4993	val = GL_NEAREST_MIPMAP_LINEAR;
4994	else
4995	val = GL_NEAREST_MIPMAP_NEAREST;
4996	}
4997	else
4998	{
4999	if (mipFilter == SVGA3D_TEX_FILTER_LINEAR)
5000	val = GL_LINEAR_MIPMAP_LINEAR;
5001	else
5002	val = GL_LINEAR_MIPMAP_NEAREST;
5003	}
5004	}
5005	else
5006	val = vmsvga3dTextureFilter2OGL((SVGA3dTextureFilter)minFilter);
5007	break;
5008	}
5009
5010	case SVGA3D_TS_MAGFILTER: /* SVGA3dTextureFilter */
5011	textureType = GL_TEXTURE_MAG_FILTER;
5012	val = vmsvga3dTextureFilter2OGL((SVGA3dTextureFilter)pTextureState[i].value);
5013	Assert(val == GL_NEAREST \|\| val == GL_LINEAR);
5014	break;
5015
5016	case SVGA3D_TS_BORDERCOLOR: /* SVGA3dColor */
5017	{
5018	GLfloat color[4]; /* red, green, blue, alpha */
5019	vmsvgaColor2GLFloatArray(pTextureState[i].value, &color[0], &color[1], &color[2], &color[3]);
5020
5021	GLenum targetGL;
5022	if (pCurrentTextureSurface)
5023	targetGL = pCurrentTextureSurface->targetGL;
5024	else
5025	{
5026	/* No texture bound, assume 2D. */
5027	targetGL = GL_TEXTURE_2D;
5028	}
5029
5030	glTexParameterfv(targetGL, GL_TEXTURE_BORDER_COLOR, color); /* Identical; default 0.0 identical too */
5031	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5032	break;
5033	}
5034
5035	case SVGA3D_TS_TEXTURE_LOD_BIAS: /* float */
5036	{
5037	GLenum targetGL;
5038	if (pCurrentTextureSurface)
5039	targetGL = pCurrentTextureSurface->targetGL;
5040	else
5041	{
5042	/* No texture bound, assume 2D. */
5043	targetGL = GL_TEXTURE_2D;
5044	}
5045
5046	glTexParameterf(targetGL, GL_TEXTURE_LOD_BIAS, pTextureState[i].floatValue); /* Identical; default 0.0 identical too */
5047	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5048	break;
5049	}
5050
5051	case SVGA3D_TS_TEXTURE_MIPMAP_LEVEL: /* uint32_t */
5052	textureType = GL_TEXTURE_BASE_LEVEL;
5053	val = pTextureState[i].value;
5054	break;
5055
5056	#if 0
5057	case SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL: /* uint32_t */
5058	samplerType = D3DSAMP_MAXANISOTROPY;
5059	val = pTextureState[i].value; /* Identical?? */
5060	break;
5061
5062	case SVGA3D_TS_GAMMA: /* float */
5063	samplerType = D3DSAMP_SRGBTEXTURE;
5064	/* Boolean in D3D */
5065	if (pTextureState[i].floatValue == 1.0f)
5066	val = FALSE;
5067	else
5068	val = TRUE;
5069	break;
5070	#endif
5071	/* Internal commands, that don't map directly to the SetTextureStageState API. */
5072	case SVGA3D_TS_TEXCOORDGEN: /* SVGA3dTextureCoordGen */
5073	AssertFailed();
5074	break;
5075
5076	default:
5077	//AssertFailed();
5078	break;
5079	}
5080
5081	if (textureType != ~(GLenum)0)
5082	{
5083	GLenum targetGL;
5084	if (pCurrentTextureSurface)
5085	targetGL = pCurrentTextureSurface->targetGL;
5086	else
5087	{
5088	/* No texture bound, assume 2D. */
5089	targetGL = GL_TEXTURE_2D;
5090	}
5091
5092	glTexParameteri(targetGL, textureType, val);
5093	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5094	}
5095	}
5096
5097	return VINF_SUCCESS;
5098	}
5099
5100	int vmsvga3dSetMaterial(PVGASTATE pThis, uint32_t cid, SVGA3dFace face, SVGA3dMaterial *pMaterial)
5101	{
5102	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
5103	AssertReturn(pState, VERR_NO_MEMORY);
5104
5105	LogFunc(("cid=%x face %d\n", cid, face));
5106
5107	PVMSVGA3DCONTEXT pContext;
5108	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5109	AssertRCReturn(rc, rc);
5110
5111	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5112
5113	GLenum oglFace;
5114	switch (face)
5115	{
5116	case SVGA3D_FACE_NONE:
5117	case SVGA3D_FACE_FRONT:
5118	oglFace = GL_FRONT;
5119	break;
5120
5121	case SVGA3D_FACE_BACK:
5122	oglFace = GL_BACK;
5123	break;
5124
5125	case SVGA3D_FACE_FRONT_BACK:
5126	oglFace = GL_FRONT_AND_BACK;
5127	break;
5128
5129	default:
5130	AssertFailedReturn(VERR_INVALID_PARAMETER);
5131	}
5132
5133	/* Save for vm state save/restore. */
5134	pContext->state.aMaterial[face].fValid = true;
5135	pContext->state.aMaterial[face].material = *pMaterial;
5136	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_MATERIAL;
5137
5138	glMaterialfv(oglFace, GL_DIFFUSE, pMaterial->diffuse);
5139	glMaterialfv(oglFace, GL_AMBIENT, pMaterial->ambient);
5140	glMaterialfv(oglFace, GL_SPECULAR, pMaterial->specular);
5141	glMaterialfv(oglFace, GL_EMISSION, pMaterial->emissive);
5142	glMaterialfv(oglFace, GL_SHININESS, &pMaterial->shininess);
5143	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5144
5145	return VINF_SUCCESS;
5146	}
5147
5148	/** @todo Move into separate library as we are using logic from Wine here. */
5149	int vmsvga3dSetLightData(PVGASTATE pThis, uint32_t cid, uint32_t index, SVGA3dLightData *pData)
5150	{
5151	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
5152	AssertReturn(pState, VERR_NO_MEMORY);
5153
5154	LogFunc(("vmsvga3dSetLightData cid=%x index=%d type=%d\n", cid, index, pData->type));
5155
5156	PVMSVGA3DCONTEXT pContext;
5157	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5158	AssertRCReturn(rc, rc);
5159
5160	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5161
5162	/* Store for vm state save/restore */
5163	if (index < SVGA3D_MAX_LIGHTS)
5164	{
5165	pContext->state.aLightData[index].fValidData = true;
5166	pContext->state.aLightData[index].data = *pData;
5167	}
5168	else
5169	AssertFailed();
5170
5171	if ( pData->attenuation0 < 0.0f
5172	\|\| pData->attenuation1 < 0.0f
5173	\|\| pData->attenuation2 < 0.0f)
5174	{
5175	Log(("vmsvga3dSetLightData: invalid negative attenuation values!!\n"));
5176	return VINF_SUCCESS; /* ignore; could crash the GL driver */
5177	}
5178
5179	/* Light settings are affected by the model view in OpenGL, the View transform in direct3d */
5180	glMatrixMode(GL_MODELVIEW);
5181	glPushMatrix();
5182	glLoadMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
5183
5184	glLightfv(GL_LIGHT0 + index, GL_DIFFUSE, pData->diffuse);
5185	glLightfv(GL_LIGHT0 + index, GL_SPECULAR, pData->specular);
5186	glLightfv(GL_LIGHT0 + index, GL_AMBIENT, pData->ambient);
5187
5188	float QuadAttenuation;
5189	if (pData->range * pData->range >= FLT_MIN)
5190	QuadAttenuation = 1.4f / (pData->range * pData->range);
5191	else
5192	QuadAttenuation = 0.0f;
5193
5194	switch (pData->type)
5195	{
5196	case SVGA3D_LIGHTTYPE_POINT:
5197	{
5198	GLfloat position[4];
5199
5200	position[0] = pData->position[0];
5201	position[1] = pData->position[1];
5202	position[2] = pData->position[2];
5203	position[3] = 1.0f;
5204
5205	glLightfv(GL_LIGHT0 + index, GL_POSITION, position);
5206	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5207
5208	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, 180.0f);
5209	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5210
5211	/* Attenuation - Are these right? guessing... */
5212	glLightf(GL_LIGHT0 + index, GL_CONSTANT_ATTENUATION, pData->attenuation0);
5213	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5214
5215	glLightf(GL_LIGHT0 + index, GL_LINEAR_ATTENUATION, pData->attenuation1);
5216	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5217
5218	glLightf(GL_LIGHT0 + index, GL_QUADRATIC_ATTENUATION, (QuadAttenuation < pData->attenuation2) ? pData->attenuation2 : QuadAttenuation);
5219	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5220
5221	/** @todo range */
5222	break;
5223	}
5224
5225	case SVGA3D_LIGHTTYPE_SPOT1:
5226	{
5227	GLfloat exponent;
5228	GLfloat position[4];
5229	const GLfloat pi = 4.0f * atanf(1.0f);
5230
5231	position[0] = pData->position[0];
5232	position[1] = pData->position[1];
5233	position[2] = pData->position[2];
5234	position[3] = 1.0f;
5235
5236	glLightfv(GL_LIGHT0 + index, GL_POSITION, position);
5237	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5238
5239	position[0] = pData->direction[0];
5240	position[1] = pData->direction[1];
5241	position[2] = pData->direction[2];
5242	position[3] = 1.0f;
5243
5244	glLightfv(GL_LIGHT0 + index, GL_SPOT_DIRECTION, position);
5245	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5246
5247	/*
5248	* opengl-ish and d3d-ish spot lights use too different models for the
5249	* light "intensity" as a function of the angle towards the main light direction,
5250	* so we only can approximate very roughly.
5251	* however spot lights are rather rarely used in games (if ever used at all).
5252	* furthermore if still used, probably nobody pays attention to such details.
5253	*/
5254	if (pData->falloff == 0)
5255	{
5256	/* Falloff = 0 is easy, because d3d's and opengl's spot light equations have the
5257	* falloff resp. exponent parameter as an exponent, so the spot light lighting
5258	* will always be 1.0 for both of them, and we don't have to care for the
5259	* rest of the rather complex calculation
5260	*/
5261	exponent = 0.0f;
5262	}
5263	else
5264	{
5265	float rho = pData->theta + (pData->phi - pData->theta) / (2 * pData->falloff);
5266	if (rho < 0.0001f)
5267	rho = 0.0001f;
5268	exponent = -0.3f/log(cos(rho/2));
5269	}
5270	if (exponent > 128.0f)
5271	exponent = 128.0f;
5272
5273	glLightf(GL_LIGHT0 + index, GL_SPOT_EXPONENT, exponent);
5274	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5275
5276	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, pData->phi * 90.0 / pi);
5277	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5278
5279	/* Attenuation - Are these right? guessing... */
5280	glLightf(GL_LIGHT0 + index, GL_CONSTANT_ATTENUATION, pData->attenuation0);
5281	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5282
5283	glLightf(GL_LIGHT0 + index, GL_LINEAR_ATTENUATION, pData->attenuation1);
5284	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5285
5286	glLightf(GL_LIGHT0 + index, GL_QUADRATIC_ATTENUATION, (QuadAttenuation < pData->attenuation2) ? pData->attenuation2 : QuadAttenuation);
5287	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5288
5289	/** @todo range */
5290	break;
5291	}
5292
5293	case SVGA3D_LIGHTTYPE_DIRECTIONAL:
5294	{
5295	GLfloat position[4];
5296
5297	position[0] = -pData->direction[0];
5298	position[1] = -pData->direction[1];
5299	position[2] = -pData->direction[2];
5300	position[3] = 0.0f;
5301
5302	glLightfv(GL_LIGHT0 + index, GL_POSITION, position); /* Note gl uses w position of 0 for direction! */
5303	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5304
5305	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, 180.0f);
5306	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5307
5308	glLightf(GL_LIGHT0 + index, GL_SPOT_EXPONENT, 0.0f);
5309	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
5310	break;
5311	}
5312
5313	case SVGA3D_LIGHTTYPE_SPOT2:
5314	default:
5315	Log(("Unsupported light type!!\n"));
5316	rc = VERR_INVALID_PARAMETER;
5317	break;
5318	}
5319
5320	/* Restore the modelview matrix */
5321	glPopMatrix();
5322
5323	return rc;
5324	}
5325
5326	int vmsvga3dSetLightEnabled(PVGASTATE pThis, uint32_t cid, uint32_t index, uint32_t enabled)
5327	{
5328	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
5329	AssertReturn(pState, VERR_NO_MEMORY);
5330
5331	LogFunc(("cid=%x %d -> %d\n", cid, index, enabled));
5332
5333	PVMSVGA3DCONTEXT pContext;
5334	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5335	AssertRCReturn(rc, rc);
5336
5337	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5338
5339	/* Store for vm state save/restore */
5340	if (index < SVGA3D_MAX_LIGHTS)
5341	pContext->state.aLightData[index].fEnabled = !!enabled;
5342	else
5343	AssertFailed();
5344
5345	if (enabled)
5346	{
5347	if (index < SVGA3D_MAX_LIGHTS)
5348	{
5349	/* Load the default settings if none have been set yet. */
5350	if (!pContext->state.aLightData[index].fValidData)
5351	vmsvga3dSetLightData(pThis, cid, index, (SVGA3dLightData *)&vmsvga3d_default_light);
5352	}
5353	glEnable(GL_LIGHT0 + index);
5354	}
5355	else
5356	glDisable(GL_LIGHT0 + index);
5357
5358	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5359	return VINF_SUCCESS;
5360	}
5361
5362	int vmsvga3dSetViewPort(PVGASTATE pThis, uint32_t cid, SVGA3dRect *pRect)
5363	{
5364	PVMSVGA3DCONTEXT pContext;
5365	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
5366	AssertReturn(pState, VERR_NO_MEMORY);
5367
5368	Log(("vmsvga3dSetViewPort cid=%x (%d,%d)(%d,%d)\n", cid, pRect->x, pRect->y, pRect->w, pRect->h));
5369
5370	if ( cid >= pState->cContexts
5371	\|\| pState->papContexts[cid]->id != cid)
5372	{
5373	Log(("vmsvga3dSetViewPort invalid context id!\n"));
5374	return VERR_INVALID_PARAMETER;
5375	}
5376	pContext = pState->papContexts[cid];
5377	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5378
5379	/* Save for vm state save/restore. */
5380	pContext->state.RectViewPort = *pRect;
5381	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_VIEWPORT;
5382
5383	/** @todo y-inversion for partial viewport coordinates? */
5384	glViewport(pRect->x, pRect->y, pRect->w, pRect->h);
5385	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5386
5387	/* Reset the projection matrix as that relies on the viewport setting. */
5388	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].fValid == true)
5389	{
5390	vmsvga3dSetTransform(pThis, cid, SVGA3D_TRANSFORM_PROJECTION, pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].matrix);
5391	}
5392	else
5393	{
5394	float matrix[16];
5395
5396	/* identity matrix if no matrix set. */
5397	memset(matrix, 0, sizeof(matrix));
5398	matrix[0] = 1.0;
5399	matrix[5] = 1.0;
5400	matrix[10] = 1.0;
5401	matrix[15] = 1.0;
5402	vmsvga3dSetTransform(pThis, cid, SVGA3D_TRANSFORM_PROJECTION, matrix);
5403	}
5404
5405	return VINF_SUCCESS;
5406	}
5407
5408	int vmsvga3dSetClipPlane(PVGASTATE pThis, uint32_t cid, uint32_t index, float plane[4])
5409	{
5410	PVMSVGA3DCONTEXT pContext;
5411	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
5412	AssertReturn(pState, VERR_NO_MEMORY);
5413	double oglPlane[4];
5414
5415	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)));
5416	AssertReturn(index < SVGA3D_CLIPPLANE_MAX, VERR_INVALID_PARAMETER);
5417
5418	if ( cid >= pState->cContexts
5419	\|\| pState->papContexts[cid]->id != cid)
5420	{
5421	Log(("vmsvga3dSetClipPlane invalid context id!\n"));
5422	return VERR_INVALID_PARAMETER;
5423	}
5424	pContext = pState->papContexts[cid];
5425	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5426
5427	/* Store for vm state save/restore. */
5428	pContext->state.aClipPlane[index].fValid = true;
5429	memcpy(pContext->state.aClipPlane[index].plane, plane, sizeof(pContext->state.aClipPlane[index].plane));
5430
5431	/** @todo clip plane affected by model view in OpenGL & view in D3D + vertex shader -> not transformed (see Wine; state.c clipplane) */
5432	oglPlane[0] = (double)plane[0];
5433	oglPlane[1] = (double)plane[1];
5434	oglPlane[2] = (double)plane[2];
5435	oglPlane[3] = (double)plane[3];
5436
5437	glClipPlane(GL_CLIP_PLANE0 + index, oglPlane);
5438	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5439
5440	return VINF_SUCCESS;
5441	}
5442
5443	int vmsvga3dSetScissorRect(PVGASTATE pThis, uint32_t cid, SVGA3dRect *pRect)
5444	{
5445	PVMSVGA3DCONTEXT pContext;
5446	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
5447	AssertReturn(pState, VERR_NO_MEMORY);
5448
5449	Log(("vmsvga3dSetScissorRect cid=%x (%d,%d)(%d,%d)\n", cid, pRect->x, pRect->y, pRect->w, pRect->h));
5450
5451	if ( cid >= pState->cContexts
5452	\|\| pState->papContexts[cid]->id != cid)
5453	{
5454	Log(("vmsvga3dSetScissorRect invalid context id!\n"));
5455	return VERR_INVALID_PARAMETER;
5456	}
5457	pContext = pState->papContexts[cid];
5458	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5459
5460	/* Store for vm state save/restore. */
5461	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_SCISSORRECT;
5462	pContext->state.RectScissor = *pRect;
5463
5464	glScissor(pRect->x, pRect->y, pRect->w, pRect->h);
5465	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5466
5467	return VINF_SUCCESS;
5468	}
5469
5470	static void vmsvgaColor2GLFloatArray(uint32_t color, GLfloat pRed, GLfloat pGreen, GLfloat pBlue, GLfloat pAlpha)
5471	{
5472	/* Convert byte color components to float (0-1.0) */
5473	*pAlpha = (GLfloat)(color >> 24) / 255.0;
5474	*pRed = (GLfloat)((color >> 16) & 0xff) / 255.0;
5475	*pGreen = (GLfloat)((color >> 8) & 0xff) / 255.0;
5476	*pBlue = (GLfloat)(color & 0xff) / 255.0;
5477	}
5478
5479	int vmsvga3dCommandClear(PVGASTATE pThis, uint32_t cid, SVGA3dClearFlag clearFlag, uint32_t color, float depth, uint32_t stencil,
5480	uint32_t cRects, SVGA3dRect *pRect)
5481	{
5482	GLbitfield mask = 0;
5483	PVMSVGA3DCONTEXT pContext;
5484	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
5485	AssertReturn(pState, VERR_NO_MEMORY);
5486	GLboolean fDepthWriteEnabled = GL_FALSE;
5487
5488	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));
5489
5490	if ( cid >= pState->cContexts
5491	\|\| pState->papContexts[cid]->id != cid)
5492	{
5493	Log(("vmsvga3dCommandClear invalid context id!\n"));
5494	return VERR_INVALID_PARAMETER;
5495	}
5496	pContext = pState->papContexts[cid];
5497	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5498
5499	if (clearFlag & SVGA3D_CLEAR_COLOR)
5500	{
5501	GLfloat red, green, blue, alpha;
5502
5503	vmsvgaColor2GLFloatArray(color, &red, &green, &blue, &alpha);
5504
5505	/* Set the color clear value. */
5506	glClearColor(red, green, blue, alpha);
5507
5508	mask \|= GL_COLOR_BUFFER_BIT;
5509	}
5510	if (clearFlag & SVGA3D_CLEAR_STENCIL)
5511	{
5512	/** @todo possibly the same problem as with glDepthMask */
5513	glClearStencil(stencil);
5514	mask \|= GL_STENCIL_BUFFER_BIT;
5515	}
5516	if (clearFlag & SVGA3D_CLEAR_DEPTH)
5517	{
5518	glClearDepth((GLdouble)depth);
5519	mask \|= GL_DEPTH_BUFFER_BIT;
5520
5521	/* glClear will not clear the depth buffer if writing is disabled. */
5522	glGetBooleanv(GL_DEPTH_WRITEMASK, &fDepthWriteEnabled);
5523	if (fDepthWriteEnabled == GL_FALSE)
5524	glDepthMask(GL_TRUE);
5525	}
5526
5527	if (cRects)
5528	{
5529	/* Save the current scissor test bit and scissor box. */
5530	glPushAttrib(GL_SCISSOR_BIT);
5531	glEnable(GL_SCISSOR_TEST);
5532	for (unsigned i=0; i < cRects; i++)
5533	{
5534	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));
5535	glScissor(pRect[i].x, pRect[i].y, pRect[i].w, pRect[i].h);
5536	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5537	glClear(mask);
5538	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5539	}
5540	/* Restore the old scissor test bit and box */
5541	glPopAttrib();
5542	}
5543	else
5544	{
5545	glClear(mask);
5546	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5547	}
5548
5549	/* Restore depth write state. */
5550	if ( (clearFlag & SVGA3D_CLEAR_DEPTH)
5551	&& fDepthWriteEnabled == GL_FALSE)
5552	glDepthMask(GL_FALSE);
5553
5554	return VINF_SUCCESS;
5555	}
5556
5557	/* Convert VMWare vertex declaration to its OpenGL equivalent. */
5558	int vmsvga3dVertexDecl2OGL(SVGA3dVertexArrayIdentity &identity, GLint &size, GLenum &type, GLboolean &normalized)
5559	{
5560	normalized = GL_FALSE;
5561	switch (identity.type)
5562	{
5563	case SVGA3D_DECLTYPE_FLOAT1:
5564	size = 1;
5565	type = GL_FLOAT;
5566	break;
5567	case SVGA3D_DECLTYPE_FLOAT2:
5568	size = 2;
5569	type = GL_FLOAT;
5570	break;
5571	case SVGA3D_DECLTYPE_FLOAT3:
5572	size = 3;
5573	type = GL_FLOAT;
5574	break;
5575	case SVGA3D_DECLTYPE_FLOAT4:
5576	size = 4;
5577	type = GL_FLOAT;
5578	break;
5579
5580	case SVGA3D_DECLTYPE_D3DCOLOR:
5581	size = GL_BGRA; /* @note requires GL_ARB_vertex_array_bgra */
5582	type = GL_UNSIGNED_BYTE;
5583	normalized = GL_TRUE; /* glVertexAttribPointer fails otherwise */
5584	break;
5585
5586	case SVGA3D_DECLTYPE_UBYTE4N:
5587	normalized = GL_TRUE;
5588	RT_FALL_THRU();
5589	case SVGA3D_DECLTYPE_UBYTE4:
5590	size = 4;
5591	type = GL_UNSIGNED_BYTE;
5592	break;
5593
5594	case SVGA3D_DECLTYPE_SHORT2N:
5595	normalized = GL_TRUE;
5596	RT_FALL_THRU();
5597	case SVGA3D_DECLTYPE_SHORT2:
5598	size = 2;
5599	type = GL_SHORT;
5600	break;
5601
5602	case SVGA3D_DECLTYPE_SHORT4N:
5603	normalized = GL_TRUE;
5604	RT_FALL_THRU();
5605	case SVGA3D_DECLTYPE_SHORT4:
5606	size = 4;
5607	type = GL_SHORT;
5608	break;
5609
5610	case SVGA3D_DECLTYPE_USHORT4N:
5611	normalized = GL_TRUE;
5612	size = 4;
5613	type = GL_UNSIGNED_SHORT;
5614	break;
5615
5616	case SVGA3D_DECLTYPE_USHORT2N:
5617	normalized = GL_TRUE;
5618	size = 2;
5619	type = GL_UNSIGNED_SHORT;
5620	break;
5621
5622	case SVGA3D_DECLTYPE_UDEC3:
5623	size = 3;
5624	type = GL_UNSIGNED_INT_2_10_10_10_REV; /** @todo correct? */
5625	break;
5626
5627	case SVGA3D_DECLTYPE_DEC3N:
5628	normalized = true;
5629	size = 3;
5630	type = GL_INT_2_10_10_10_REV; /** @todo correct? */
5631	break;
5632
5633	case SVGA3D_DECLTYPE_FLOAT16_2:
5634	size = 2;
5635	type = GL_HALF_FLOAT;
5636	break;
5637	case SVGA3D_DECLTYPE_FLOAT16_4:
5638	size = 4;
5639	type = GL_HALF_FLOAT;
5640	break;
5641	default:
5642	AssertFailedReturn(VERR_INVALID_PARAMETER);
5643	}
5644
5645	//pVertexElement->Method = identity.method;
5646	//pVertexElement->Usage = identity.usage;
5647
5648	return VINF_SUCCESS;
5649	}
5650
5651	/* Convert VMWare primitive type to its OpenGL equivalent. */
5652	/* Calculate the vertex count based on the primitive type and nr of primitives. */
5653	int vmsvga3dPrimitiveType2OGL(SVGA3dPrimitiveType PrimitiveType, GLenum pMode, uint32_t cPrimitiveCount, uint32_t pcVertices)
5654	{
5655	switch (PrimitiveType)
5656	{
5657	case SVGA3D_PRIMITIVE_TRIANGLELIST:
5658	*pMode = GL_TRIANGLES;
5659	pcVertices = cPrimitiveCount 3;
5660	break;
5661	case SVGA3D_PRIMITIVE_POINTLIST:
5662	*pMode = GL_POINTS;
5663	*pcVertices = cPrimitiveCount;
5664	break;
5665	case SVGA3D_PRIMITIVE_LINELIST:
5666	*pMode = GL_LINES;
5667	pcVertices = cPrimitiveCount 2;
5668	break;
5669	case SVGA3D_PRIMITIVE_LINESTRIP:
5670	*pMode = GL_LINE_STRIP;
5671	*pcVertices = cPrimitiveCount + 1;
5672	break;
5673	case SVGA3D_PRIMITIVE_TRIANGLESTRIP:
5674	*pMode = GL_TRIANGLE_STRIP;
5675	*pcVertices = cPrimitiveCount + 2;
5676	break;
5677	case SVGA3D_PRIMITIVE_TRIANGLEFAN:
5678	*pMode = GL_TRIANGLE_FAN;
5679	*pcVertices = cPrimitiveCount + 2;
5680	break;
5681	default:
5682	return VERR_INVALID_PARAMETER;
5683	}
5684	return VINF_SUCCESS;
5685	}
5686
5687	int vmsvga3dResetTransformMatrices(PVGASTATE pThis, PVMSVGA3DCONTEXT pContext)
5688	{
5689	int rc;
5690
5691	/* Reset the view matrix (also takes the world matrix into account). */
5692	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].fValid == true)
5693	{
5694	rc = vmsvga3dSetTransform(pThis, pContext->id, SVGA3D_TRANSFORM_VIEW, pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
5695	}
5696	else
5697	{
5698	float matrix[16];
5699
5700	/* identity matrix if no matrix set. */
5701	memset(matrix, 0, sizeof(matrix));
5702	matrix[0] = 1.0;
5703	matrix[5] = 1.0;
5704	matrix[10] = 1.0;
5705	matrix[15] = 1.0;
5706	rc = vmsvga3dSetTransform(pThis, pContext->id, SVGA3D_TRANSFORM_VIEW, matrix);
5707	}
5708
5709	/* Reset the projection matrix. */
5710	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].fValid == true)
5711	{
5712	rc = vmsvga3dSetTransform(pThis, pContext->id, SVGA3D_TRANSFORM_PROJECTION, pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].matrix);
5713	}
5714	else
5715	{
5716	float matrix[16];
5717
5718	/* identity matrix if no matrix set. */
5719	memset(matrix, 0, sizeof(matrix));
5720	matrix[0] = 1.0;
5721	matrix[5] = 1.0;
5722	matrix[10] = 1.0;
5723	matrix[15] = 1.0;
5724	rc = vmsvga3dSetTransform(pThis, pContext->id, SVGA3D_TRANSFORM_PROJECTION, matrix);
5725	}
5726	AssertRC(rc);
5727	return rc;
5728	}
5729
5730	int vmsvga3dDrawPrimitivesProcessVertexDecls(PVGASTATE pThis, PVMSVGA3DCONTEXT pContext,
5731	uint32_t iVertexDeclBase, uint32_t numVertexDecls,
5732	SVGA3dVertexDecl pVertexDecl, SVGA3dVertexDivisor const paVertexDivisors)
5733	{
5734	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
5735	unsigned sidVertex = pVertexDecl[0].array.surfaceId;
5736	PVMSVGA3DSURFACE pVertexSurface;
5737
5738	AssertReturn(sidVertex < SVGA3D_MAX_SURFACE_IDS, VERR_INVALID_PARAMETER);
5739	AssertReturn(sidVertex < pState->cSurfaces && pState->papSurfaces[sidVertex]->id == sidVertex, VERR_INVALID_PARAMETER);
5740
5741	pVertexSurface = pState->papSurfaces[sidVertex];
5742	Log(("vmsvga3dDrawPrimitives: vertex surface %x\n", sidVertex));
5743
5744	/* Create and/or bind the vertex buffer. */
5745	if (pVertexSurface->oglId.buffer == OPENGL_INVALID_ID)
5746	{
5747	Log(("vmsvga3dDrawPrimitives: create vertex buffer fDirty=%d size=%x bytes\n", pVertexSurface->fDirty, pVertexSurface->pMipmapLevels[0].cbSurface));
5748	PVMSVGA3DCONTEXT pSavedCtx = pContext;
5749	pContext = &pState->SharedCtx;
5750	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5751
5752	pState->ext.glGenBuffers(1, &pVertexSurface->oglId.buffer);
5753	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5754	pVertexSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_BUFFER;
5755
5756	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pVertexSurface->oglId.buffer);
5757	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5758
5759	Assert(pVertexSurface->fDirty);
5760	/** @todo rethink usage dynamic/static */
5761	pState->ext.glBufferData(GL_ARRAY_BUFFER, pVertexSurface->pMipmapLevels[0].cbSurface, pVertexSurface->pMipmapLevels[0].pSurfaceData, GL_DYNAMIC_DRAW);
5762	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5763
5764	pVertexSurface->pMipmapLevels[0].fDirty = false;
5765	pVertexSurface->fDirty = false;
5766
5767	pVertexSurface->surfaceFlags \|= SVGA3D_SURFACE_HINT_VERTEXBUFFER;
5768
5769	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, OPENGL_INVALID_ID);
5770	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5771
5772	pContext = pSavedCtx;
5773	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5774	}
5775
5776	Assert(pVertexSurface->fDirty == false);
5777	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pVertexSurface->oglId.buffer);
5778	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5779
5780	/* Setup the vertex declarations. */
5781	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
5782	{
5783	GLint size;
5784	GLenum type;
5785	GLboolean normalized;
5786	GLuint index = iVertexDeclBase + iVertex;
5787
5788	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));
5789
5790	int rc = vmsvga3dVertexDecl2OGL(pVertexDecl[iVertex].identity, size, type, normalized);
5791	AssertRCReturn(rc, rc);
5792
5793	if (pContext->state.shidVertex != SVGA_ID_INVALID)
5794	{
5795	/* Use numbered vertex arrays when shaders are active. */
5796	pState->ext.glEnableVertexAttribArray(index);
5797	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5798	pState->ext.glVertexAttribPointer(index, size, type, normalized, pVertexDecl[iVertex].array.stride,
5799	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
5800	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5801
5802	GLuint divisor = paVertexDivisors && paVertexDivisors[index].s.instanceData ? 1 : 0;
5803	if (pVertexDecl[iVertex].array.stride == 0 && divisor == 0)
5804	{
5805	/* Zero stride means that the attribute pointer must not be increased.
5806	* See comment about stride in vmsvga3dDrawPrimitives.
5807	*/
5808	LogRelMax(8, ("VMSVGA: Warning: zero stride array (instancing %s)\n", paVertexDivisors ? "on" : "off"));
5809	AssertFailed();
5810	divisor = 1;
5811	}
5812	pState->ext.glVertexAttribDivisor(index, divisor);
5813	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5814
5815	/** @todo case SVGA3D_DECLUSAGE_COLOR: color component order not identical!! test GL_BGRA!! */
5816	}
5817	else
5818	{
5819	if (pVertexDecl[iVertex].array.stride == 0)
5820	{
5821	/* Zero stride means that the attribute pointer must not be increased.
5822	* See comment about stride in vmsvga3dDrawPrimitives.
5823	*/
5824	LogRelMax(8, ("VMSVGA: Warning: zero stride array in fixed function pipeline\n"));
5825	AssertFailed();
5826	}
5827
5828	/* Use the predefined selection of vertex streams for the fixed pipeline. */
5829	switch (pVertexDecl[iVertex].identity.usage)
5830	{
5831	case SVGA3D_DECLUSAGE_POSITIONT:
5832	case SVGA3D_DECLUSAGE_POSITION:
5833	{
5834	glEnableClientState(GL_VERTEX_ARRAY);
5835	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5836	glVertexPointer(size, type, pVertexDecl[iVertex].array.stride,
5837	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
5838	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5839	break;
5840	}
5841	case SVGA3D_DECLUSAGE_BLENDWEIGHT:
5842	AssertFailed();
5843	break;
5844	case SVGA3D_DECLUSAGE_BLENDINDICES:
5845	AssertFailed();
5846	break;
5847	case SVGA3D_DECLUSAGE_NORMAL:
5848	glEnableClientState(GL_NORMAL_ARRAY);
5849	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5850	glNormalPointer(type, pVertexDecl[iVertex].array.stride,
5851	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
5852	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5853	break;
5854	case SVGA3D_DECLUSAGE_PSIZE:
5855	AssertFailed();
5856	break;
5857	case SVGA3D_DECLUSAGE_TEXCOORD:
5858	/* Specify the affected texture unit. */
5859	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x103
5860	glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
5861	#else
5862	pState->ext.glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
5863	#endif
5864	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
5865	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5866	glTexCoordPointer(size, type, pVertexDecl[iVertex].array.stride,
5867	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
5868	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5869	break;
5870	case SVGA3D_DECLUSAGE_TANGENT:
5871	AssertFailed();
5872	break;
5873	case SVGA3D_DECLUSAGE_BINORMAL:
5874	AssertFailed();
5875	break;
5876	case SVGA3D_DECLUSAGE_TESSFACTOR:
5877	AssertFailed();
5878	break;
5879	case SVGA3D_DECLUSAGE_COLOR: /** @todo color component order not identical!! test GL_BGRA!! */
5880	glEnableClientState(GL_COLOR_ARRAY);
5881	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5882	glColorPointer(size, type, pVertexDecl[iVertex].array.stride,
5883	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
5884	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5885	break;
5886	case SVGA3D_DECLUSAGE_FOG:
5887	glEnableClientState(GL_FOG_COORD_ARRAY);
5888	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5889	pState->ext.glFogCoordPointer(type, pVertexDecl[iVertex].array.stride,
5890	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
5891	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5892	break;
5893	case SVGA3D_DECLUSAGE_DEPTH:
5894	AssertFailed();
5895	break;
5896	case SVGA3D_DECLUSAGE_SAMPLE:
5897	AssertFailed();
5898	break;
5899	case SVGA3D_DECLUSAGE_MAX: AssertFailed(); break; /* shut up gcc */
5900	}
5901	}
5902
5903	#ifdef LOG_ENABLED
5904	if (pVertexDecl[iVertex].array.stride == 0)
5905	Log(("vmsvga3dDrawPrimitives: stride == 0! Can be valid\n"));
5906	#endif
5907	}
5908
5909	return VINF_SUCCESS;
5910	}
5911
5912	int vmsvga3dDrawPrimitivesCleanupVertexDecls(PVGASTATE pThis, PVMSVGA3DCONTEXT pContext, uint32_t iVertexDeclBase, uint32_t numVertexDecls, SVGA3dVertexDecl *pVertexDecl)
5913	{
5914	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
5915
5916	/* Clean up the vertex declarations. */
5917	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
5918	{
5919	if (pVertexDecl[iVertex].identity.usage == SVGA3D_DECLUSAGE_POSITIONT)
5920	{
5921	/* Reset the transformation matrices in case of a switch back from pretransformed mode. */
5922	Log(("vmsvga3dDrawPrimitivesCleanupVertexDecls: reset world and projection matrices after transformation reset (pre-transformed -> transformed)\n"));
5923	vmsvga3dResetTransformMatrices(pThis, pContext);
5924	}
5925
5926	if (pContext->state.shidVertex != SVGA_ID_INVALID)
5927	{
5928	/* Use numbered vertex arrays when shaders are active. */
5929	pState->ext.glVertexAttribDivisor(iVertexDeclBase + iVertex, 0);
5930	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5931	pState->ext.glDisableVertexAttribArray(iVertexDeclBase + iVertex);
5932	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5933	}
5934	else
5935	{
5936	/* Use the predefined selection of vertex streams for the fixed pipeline. */
5937	switch (pVertexDecl[iVertex].identity.usage)
5938	{
5939	case SVGA3D_DECLUSAGE_POSITION:
5940	case SVGA3D_DECLUSAGE_POSITIONT:
5941	glDisableClientState(GL_VERTEX_ARRAY);
5942	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5943	break;
5944	case SVGA3D_DECLUSAGE_BLENDWEIGHT:
5945	break;
5946	case SVGA3D_DECLUSAGE_BLENDINDICES:
5947	break;
5948	case SVGA3D_DECLUSAGE_NORMAL:
5949	glDisableClientState(GL_NORMAL_ARRAY);
5950	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5951	break;
5952	case SVGA3D_DECLUSAGE_PSIZE:
5953	break;
5954	case SVGA3D_DECLUSAGE_TEXCOORD:
5955	/* Specify the affected texture unit. */
5956	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x103
5957	glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
5958	#else
5959	pState->ext.glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
5960	#endif
5961	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
5962	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5963	break;
5964	case SVGA3D_DECLUSAGE_TANGENT:
5965	break;
5966	case SVGA3D_DECLUSAGE_BINORMAL:
5967	break;
5968	case SVGA3D_DECLUSAGE_TESSFACTOR:
5969	break;
5970	case SVGA3D_DECLUSAGE_COLOR: /** @todo color component order not identical!! */
5971	glDisableClientState(GL_COLOR_ARRAY);
5972	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5973	break;
5974	case SVGA3D_DECLUSAGE_FOG:
5975	glDisableClientState(GL_FOG_COORD_ARRAY);
5976	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5977	break;
5978	case SVGA3D_DECLUSAGE_DEPTH:
5979	break;
5980	case SVGA3D_DECLUSAGE_SAMPLE:
5981	break;
5982	case SVGA3D_DECLUSAGE_MAX: AssertFailed(); break; /* shut up gcc */
5983	}
5984	}
5985	}
5986	/* Unbind the vertex buffer after usage. */
5987	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
5988	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5989	return VINF_SUCCESS;
5990	}
5991
5992	int vmsvga3dDrawPrimitives(PVGASTATE pThis, uint32_t cid, uint32_t numVertexDecls, SVGA3dVertexDecl *pVertexDecl,
5993	uint32_t numRanges, SVGA3dPrimitiveRange *pRange, uint32_t cVertexDivisor,
5994	SVGA3dVertexDivisor *pVertexDivisor)
5995	{
5996	RT_NOREF(pVertexDivisor);
5997	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
5998	AssertReturn(pState, VERR_INTERNAL_ERROR);
5999	PVMSVGA3DCONTEXT pContext;
6000	int rc = VERR_NOT_IMPLEMENTED;
6001	uint32_t iCurrentVertex;
6002
6003	Log(("vmsvga3dDrawPrimitives cid=%x numVertexDecls=%d numRanges=%d, cVertexDivisor=%d\n", cid, numVertexDecls, numRanges, cVertexDivisor));
6004
6005	/* Caller already check these, but it cannot hurt to check again... */
6006	AssertReturn(numVertexDecls && numVertexDecls <= SVGA3D_MAX_VERTEX_ARRAYS, VERR_INVALID_PARAMETER);
6007	AssertReturn(numRanges && numRanges <= SVGA3D_MAX_DRAW_PRIMITIVE_RANGES, VERR_INVALID_PARAMETER);
6008	AssertReturn(!cVertexDivisor \|\| cVertexDivisor == numVertexDecls, VERR_INVALID_PARAMETER);
6009
6010	if (!cVertexDivisor)
6011	pVertexDivisor = NULL; /* Be sure. */
6012
6013	if ( cid >= pState->cContexts
6014	\|\| pState->papContexts[cid]->id != cid)
6015	{
6016	Log(("vmsvga3dDrawPrimitives invalid context id!\n"));
6017	return VERR_INVALID_PARAMETER;
6018	}
6019	pContext = pState->papContexts[cid];
6020	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6021
6022	/* Check for pretransformed vertex declarations. */
6023	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
6024	{
6025	switch (pVertexDecl[iVertex].identity.usage)
6026	{
6027	case SVGA3D_DECLUSAGE_POSITIONT:
6028	Log(("ShaderSetPositionTransformed: (%d,%d)\n", pContext->state.RectViewPort.w, pContext->state.RectViewPort.h));
6029	RT_FALL_THRU();
6030	case SVGA3D_DECLUSAGE_POSITION:
6031	ShaderSetPositionTransformed(pContext->pShaderContext, pContext->state.RectViewPort.w,
6032	pContext->state.RectViewPort.h,
6033	pVertexDecl[iVertex].identity.usage == SVGA3D_DECLUSAGE_POSITIONT);
6034	break;
6035	default: /* Shut up MSC. */ break;
6036	}
6037	}
6038
6039	/*
6040	* D3D and OpenGL have a different meaning of value zero for the vertex array stride:
6041	* - D3D and VMSVGA: "use a zero stride to tell the runtime not to increment the vertex buffer offset."
6042	* - OpenGL: "If stride is 0, the generic vertex attributes are understood to be tightly packed in the array."
6043	* VMSVGA uses the D3D semantics.
6044	*
6045	* In order to tell OpenGL to reuse the zero stride attributes for each vertex
6046	* such attributes could be declared as instance data, then OpenGL applies them once
6047	* for all vertices of the one drawn instance.
6048	*
6049	* If instancing is already used (cVertexDivisor > 0), then the code does nothing and assumes that
6050	* all instance data is already correctly marked as such.
6051	*
6052	* If instancing is not requisted (cVertexDivisor == 0), then the code creates a description for
6053	* one instance where all arrays with zero stride are marked as instance data, and all arrays
6054	* with non-zero stride as indexed data.
6055	*/
6056	bool fZeroStrideArray = false;
6057	if (cVertexDivisor == 0)
6058	{
6059	unsigned i;
6060	for (i = 0; i < numVertexDecls; ++i)
6061	{
6062	if (pVertexDecl[i].array.stride == 0)
6063	{
6064	fZeroStrideArray = true;
6065	break;
6066	}
6067	}
6068
6069	if (fZeroStrideArray)
6070	{
6071	cVertexDivisor = numVertexDecls;
6072	pVertexDivisor = (SVGA3dVertexDivisor )RTMemTmpAlloc(sizeof(SVGA3dVertexDivisor) cVertexDivisor);
6073	AssertPtrReturn(pVertexDivisor, VERR_NO_MEMORY);
6074
6075	for (i = 0; i < numVertexDecls; ++i)
6076	{
6077	pVertexDivisor[i].s.count = 1;
6078	if (pVertexDecl[i].array.stride == 0)
6079	{
6080	pVertexDivisor[i].s.instanceData = 1;
6081	}
6082	else
6083	{
6084	pVertexDivisor[i].s.indexedData = 1;
6085	}
6086	}
6087	}
6088	}
6089
6090	/* Try to figure out if instancing is used.
6091	* Support simple instancing case with one set of indexed data and one set per-instance data.
6092	*/
6093	uint32_t cInstances = 0;
6094	for (uint32_t iVertexDivisor = 0; iVertexDivisor < cVertexDivisor; ++iVertexDivisor)
6095	{
6096	if (pVertexDivisor[iVertexDivisor].s.indexedData)
6097	{
6098	if (cInstances == 0)
6099	cInstances = pVertexDivisor[iVertexDivisor].s.count;
6100	else
6101	Assert(cInstances == pVertexDivisor[iVertexDivisor].s.count);
6102	}
6103	else if (pVertexDivisor[iVertexDivisor].s.instanceData)
6104	{
6105	Assert(pVertexDivisor[iVertexDivisor].s.count == 1);
6106	}
6107	}
6108
6109	/* Flush any shader changes; after (!) checking the vertex declarations to deal with pre-transformed vertices. */
6110	if (pContext->pShaderContext)
6111	{
6112	uint32_t rtHeight = 0;
6113
6114	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0] != SVGA_ID_INVALID)
6115	{
6116	PVMSVGA3DSURFACE pRenderTarget = pState->papSurfaces[pContext->state.aRenderTargets[SVGA3D_RT_COLOR0]];
6117	rtHeight = pRenderTarget->pMipmapLevels[0].mipmapSize.height;
6118	}
6119
6120	ShaderUpdateState(pContext->pShaderContext, rtHeight);
6121	}
6122
6123	/* Process all vertex declarations. Each vertex buffer is represented by one stream. */
6124	iCurrentVertex = 0;
6125	while (iCurrentVertex < numVertexDecls)
6126	{
6127	uint32_t sidVertex = SVGA_ID_INVALID;
6128	uint32_t iVertex;
6129
6130	for (iVertex = iCurrentVertex; iVertex < numVertexDecls; iVertex++)
6131	{
6132	if ( sidVertex != SVGA_ID_INVALID
6133	&& pVertexDecl[iVertex].array.surfaceId != sidVertex
6134	)
6135	break;
6136	sidVertex = pVertexDecl[iVertex].array.surfaceId;
6137	}
6138
6139	rc = vmsvga3dDrawPrimitivesProcessVertexDecls(pThis, pContext, iCurrentVertex, iVertex - iCurrentVertex,
6140	&pVertexDecl[iCurrentVertex], pVertexDivisor);
6141	AssertRCReturn(rc, rc);
6142
6143	iCurrentVertex = iVertex;
6144	}
6145
6146	/* Now draw the primitives. */
6147	for (unsigned iPrimitive = 0; iPrimitive < numRanges; iPrimitive++)
6148	{
6149	GLenum modeDraw;
6150	unsigned sidIndex = pRange[iPrimitive].indexArray.surfaceId;
6151	PVMSVGA3DSURFACE pIndexSurface = NULL;
6152	unsigned cVertices;
6153
6154	Log(("Primitive %d: type %s\n", iPrimitive, vmsvga3dPrimitiveType2String(pRange[iPrimitive].primType)));
6155	rc = vmsvga3dPrimitiveType2OGL(pRange[iPrimitive].primType, &modeDraw, pRange[iPrimitive].primitiveCount, &cVertices);
6156	if (RT_FAILURE(rc))
6157	{
6158	AssertRC(rc);
6159	goto internal_error;
6160	}
6161
6162	if (sidIndex != SVGA3D_INVALID_ID)
6163	{
6164	AssertMsg(pRange[iPrimitive].indexWidth == sizeof(uint32_t) \|\| pRange[iPrimitive].indexWidth == sizeof(uint16_t), ("Unsupported primitive width %d\n", pRange[iPrimitive].indexWidth));
6165
6166	if ( sidIndex >= SVGA3D_MAX_SURFACE_IDS
6167	\|\| sidIndex >= pState->cSurfaces
6168	\|\| pState->papSurfaces[sidIndex]->id != sidIndex)
6169	{
6170	Assert(sidIndex < SVGA3D_MAX_SURFACE_IDS);
6171	Assert(sidIndex < pState->cSurfaces && pState->papSurfaces[sidIndex]->id == sidIndex);
6172	rc = VERR_INVALID_PARAMETER;
6173	goto internal_error;
6174	}
6175	pIndexSurface = pState->papSurfaces[sidIndex];
6176	Log(("vmsvga3dDrawPrimitives: index surface %x\n", sidIndex));
6177
6178	if (pIndexSurface->oglId.buffer == OPENGL_INVALID_ID)
6179	{
6180	Log(("vmsvga3dDrawPrimitives: create index buffer fDirty=%d size=%x bytes\n", pIndexSurface->fDirty, pIndexSurface->pMipmapLevels[0].cbSurface));
6181	pContext = &pState->SharedCtx;
6182	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6183
6184	pState->ext.glGenBuffers(1, &pIndexSurface->oglId.buffer);
6185	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6186	pIndexSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_BUFFER;
6187
6188	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->oglId.buffer);
6189	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6190
6191	Assert(pIndexSurface->fDirty);
6192
6193	/** @todo rethink usage dynamic/static */
6194	pState->ext.glBufferData(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->pMipmapLevels[0].cbSurface, pIndexSurface->pMipmapLevels[0].pSurfaceData, GL_DYNAMIC_DRAW);
6195	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6196
6197	pIndexSurface->pMipmapLevels[0].fDirty = false;
6198	pIndexSurface->fDirty = false;
6199
6200	pIndexSurface->surfaceFlags \|= SVGA3D_SURFACE_HINT_INDEXBUFFER;
6201
6202	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, OPENGL_INVALID_ID);
6203	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6204
6205	pContext = pState->papContexts[cid];
6206	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6207	}
6208	Assert(pIndexSurface->fDirty == false);
6209
6210	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->oglId.buffer);
6211	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6212	}
6213
6214	if (!pIndexSurface)
6215	{
6216	/* Render without an index buffer */
6217	Log(("DrawPrimitive %x cPrimitives=%d cVertices=%d index index bias=%d\n", modeDraw, pRange[iPrimitive].primitiveCount, cVertices, pRange[iPrimitive].indexBias));
6218	if (cInstances == 0)
6219	{
6220	glDrawArrays(modeDraw, pRange[iPrimitive].indexBias, cVertices);
6221	}
6222	else
6223	{
6224	pState->ext.glDrawArraysInstanced(modeDraw, pRange[iPrimitive].indexBias, cVertices, cInstances);
6225	}
6226	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6227	}
6228	else
6229	{
6230	Assert(pRange[iPrimitive].indexWidth == pRange[iPrimitive].indexArray.stride);
6231
6232	GLenum indexType;
6233	switch (pRange[iPrimitive].indexWidth)
6234	{
6235	case 1: indexType = GL_UNSIGNED_BYTE; break;
6236	case 2: indexType = GL_UNSIGNED_SHORT; break;
6237	default: AssertMsgFailed(("indexWidth %d\n", pRange[iPrimitive].indexWidth));
6238	RT_FALL_THROUGH();
6239	case 4: indexType = GL_UNSIGNED_INT; break;
6240	}
6241
6242	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));
6243	if (cInstances == 0)
6244	{
6245	/* Render with an index buffer */
6246	if (pRange[iPrimitive].indexBias == 0)
6247	glDrawElements(modeDraw,
6248	cVertices,
6249	indexType,
6250	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset); / byte offset in indices buffer */
6251	else
6252	pState->ext.glDrawElementsBaseVertex(modeDraw,
6253	cVertices,
6254	indexType,
6255	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
6256	pRange[iPrimitive].indexBias); /* basevertex */
6257	}
6258	else
6259	{
6260	/* Render with an index buffer */
6261	if (pRange[iPrimitive].indexBias == 0)
6262	pState->ext.glDrawElementsInstanced(modeDraw,
6263	cVertices,
6264	indexType,
6265	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
6266	cInstances);
6267	else
6268	pState->ext.glDrawElementsInstancedBaseVertex(modeDraw,
6269	cVertices,
6270	indexType,
6271	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
6272	cInstances,
6273	pRange[iPrimitive].indexBias); /* basevertex */
6274	}
6275	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6276
6277	/* Unbind the index buffer after usage. */
6278	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
6279	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6280	}
6281	}
6282
6283	internal_error:
6284
6285	/* Deactivate the vertex declarations. */
6286	iCurrentVertex = 0;
6287	while (iCurrentVertex < numVertexDecls)
6288	{
6289	uint32_t sidVertex = SVGA_ID_INVALID;
6290	uint32_t iVertex;
6291
6292	for (iVertex = iCurrentVertex; iVertex < numVertexDecls; iVertex++)
6293	{
6294	if ( sidVertex != SVGA_ID_INVALID
6295	&& pVertexDecl[iVertex].array.surfaceId != sidVertex
6296	)
6297	break;
6298	sidVertex = pVertexDecl[iVertex].array.surfaceId;
6299	}
6300
6301	rc = vmsvga3dDrawPrimitivesCleanupVertexDecls(pThis, pContext, iCurrentVertex, iVertex - iCurrentVertex, &pVertexDecl[iCurrentVertex]);
6302	AssertRCReturn(rc, rc);
6303
6304	iCurrentVertex = iVertex;
6305	}
6306
6307	if (fZeroStrideArray)
6308	{
6309	RTMemTmpFree(pVertexDivisor);
6310	pVertexDivisor = NULL;
6311	}
6312
6313	#ifdef DEBUG
6314	/* Check whether 'activeTexture' on texture unit 'i' matches what we expect. */
6315	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); ++i)
6316	{
6317	if (pContext->aSidActiveTextures[i] != SVGA3D_INVALID_ID)
6318	{
6319	PVMSVGA3DSURFACE pTexture;
6320	int rc2 = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[i], &pTexture);
6321	AssertContinue(RT_SUCCESS(rc2));
6322
6323	GLint activeTextureUnit = 0;
6324	glGetIntegerv(GL_ACTIVE_TEXTURE, &activeTextureUnit);
6325	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6326
6327	pState->ext.glActiveTexture(GL_TEXTURE0 + i);
6328	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6329
6330	GLint activeTexture = 0;
6331	glGetIntegerv(pTexture->bindingGL, &activeTexture);
6332	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6333
6334	pState->ext.glActiveTexture(activeTextureUnit);
6335	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6336
6337	AssertMsg(pTexture->oglId.texture == (GLuint)activeTexture,
6338	("%x vs %x unit %d (active unit %d) sid=%x\n", pTexture->oglId.texture, activeTexture, i,
6339	activeTextureUnit - GL_TEXTURE0, pContext->aSidActiveTextures[i]));
6340	}
6341	}
6342	#endif
6343
6344	#if 0
6345	/* Dump render target to a bitmap. */
6346	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0] != SVGA3D_INVALID_ID)
6347	{
6348	vmsvga3dUpdateHeapBuffersForSurfaces(pThis, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0]);
6349	PVMSVGA3DSURFACE pSurface;
6350	int rc2 = vmsvga3dSurfaceFromSid(pState, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0], &pSurface);
6351	if (RT_SUCCESS(rc2))
6352	vmsvga3dInfoSurfaceToBitmap(NULL, pSurface, "bmp", "rt", "-post");
6353	}
6354	#endif
6355
6356	return rc;
6357	}
6358
6359
6360	int vmsvga3dShaderDefine(PVGASTATE pThis, uint32_t cid, uint32_t shid, SVGA3dShaderType type, uint32_t cbData, uint32_t *pShaderData)
6361	{
6362	PVMSVGA3DCONTEXT pContext;
6363	PVMSVGA3DSHADER pShader;
6364	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
6365	AssertReturn(pState, VERR_NO_MEMORY);
6366	int rc;
6367
6368	Log(("vmsvga3dShaderDefine cid=%x shid=%x type=%s cbData=%x\n", cid, shid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", cbData));
6369	Log3(("shader code:\n%.*Rhxd\n", cbData, pShaderData));
6370
6371	if ( cid >= pState->cContexts
6372	\|\| pState->papContexts[cid]->id != cid)
6373	{
6374	Log(("vmsvga3dShaderDefine invalid context id!\n"));
6375	return VERR_INVALID_PARAMETER;
6376	}
6377	pContext = pState->papContexts[cid];
6378	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6379
6380	AssertReturn(shid < SVGA3D_MAX_SHADER_IDS, VERR_INVALID_PARAMETER);
6381	if (type == SVGA3D_SHADERTYPE_VS)
6382	{
6383	if (shid >= pContext->cVertexShaders)
6384	{
6385	void pvNew = RTMemRealloc(pContext->paVertexShader, sizeof(VMSVGA3DSHADER) (shid + 1));
6386	AssertReturn(pvNew, VERR_NO_MEMORY);
6387	pContext->paVertexShader = (PVMSVGA3DSHADER)pvNew;
6388	memset(&pContext->paVertexShader[pContext->cVertexShaders], 0, sizeof(VMSVGA3DSHADER) * (shid + 1 - pContext->cVertexShaders));
6389	for (uint32_t i = pContext->cVertexShaders; i < shid + 1; i++)
6390	pContext->paVertexShader[i].id = SVGA3D_INVALID_ID;
6391	pContext->cVertexShaders = shid + 1;
6392	}
6393	/* If one already exists with this id, then destroy it now. */
6394	if (pContext->paVertexShader[shid].id != SVGA3D_INVALID_ID)
6395	vmsvga3dShaderDestroy(pThis, cid, shid, pContext->paVertexShader[shid].type);
6396
6397	pShader = &pContext->paVertexShader[shid];
6398	}
6399	else
6400	{
6401	Assert(type == SVGA3D_SHADERTYPE_PS);
6402	if (shid >= pContext->cPixelShaders)
6403	{
6404	void pvNew = RTMemRealloc(pContext->paPixelShader, sizeof(VMSVGA3DSHADER) (shid + 1));
6405	AssertReturn(pvNew, VERR_NO_MEMORY);
6406	pContext->paPixelShader = (PVMSVGA3DSHADER)pvNew;
6407	memset(&pContext->paPixelShader[pContext->cPixelShaders], 0, sizeof(VMSVGA3DSHADER) * (shid + 1 - pContext->cPixelShaders));
6408	for (uint32_t i = pContext->cPixelShaders; i < shid + 1; i++)
6409	pContext->paPixelShader[i].id = SVGA3D_INVALID_ID;
6410	pContext->cPixelShaders = shid + 1;
6411	}
6412	/* If one already exists with this id, then destroy it now. */
6413	if (pContext->paPixelShader[shid].id != SVGA3D_INVALID_ID)
6414	vmsvga3dShaderDestroy(pThis, cid, shid, pContext->paPixelShader[shid].type);
6415
6416	pShader = &pContext->paPixelShader[shid];
6417	}
6418
6419	memset(pShader, 0, sizeof(*pShader));
6420	pShader->id = shid;
6421	pShader->cid = cid;
6422	pShader->type = type;
6423	pShader->cbData = cbData;
6424	pShader->pShaderProgram = RTMemAllocZ(cbData);
6425	AssertReturn(pShader->pShaderProgram, VERR_NO_MEMORY);
6426	memcpy(pShader->pShaderProgram, pShaderData, cbData);
6427
6428	#ifdef DUMP_SHADER_DISASSEMBLY
6429	LPD3DXBUFFER pDisassembly;
6430	HRESULT hr = D3DXDisassembleShader((const DWORD *)pShaderData, FALSE, NULL, &pDisassembly);
6431	if (hr == D3D_OK)
6432	{
6433	Log(("Shader disassembly:\n%s\n", pDisassembly->GetBufferPointer()));
6434	pDisassembly->Release();
6435	}
6436	#endif
6437
6438	switch (type)
6439	{
6440	case SVGA3D_SHADERTYPE_VS:
6441	rc = ShaderCreateVertexShader(pContext->pShaderContext, (const uint32_t *)pShaderData, &pShader->u.pVertexShader);
6442	break;
6443
6444	case SVGA3D_SHADERTYPE_PS:
6445	rc = ShaderCreatePixelShader(pContext->pShaderContext, (const uint32_t *)pShaderData, &pShader->u.pPixelShader);
6446	break;
6447
6448	default:
6449	AssertFailedReturn(VERR_INVALID_PARAMETER);
6450	}
6451	if (rc != VINF_SUCCESS)
6452	{
6453	RTMemFree(pShader->pShaderProgram);
6454	memset(pShader, 0, sizeof(*pShader));
6455	pShader->id = SVGA3D_INVALID_ID;
6456	}
6457
6458	return rc;
6459	}
6460
6461	int vmsvga3dShaderDestroy(PVGASTATE pThis, uint32_t cid, uint32_t shid, SVGA3dShaderType type)
6462	{
6463	PVMSVGA3DCONTEXT pContext;
6464	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
6465	AssertReturn(pState, VERR_NO_MEMORY);
6466	PVMSVGA3DSHADER pShader = NULL;
6467	int rc;
6468
6469	Log(("vmsvga3dShaderDestroy cid=%x shid=%x type=%s\n", cid, shid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL"));
6470
6471	if ( cid >= pState->cContexts
6472	\|\| pState->papContexts[cid]->id != cid)
6473	{
6474	Log(("vmsvga3dShaderDestroy invalid context id!\n"));
6475	return VERR_INVALID_PARAMETER;
6476	}
6477	pContext = pState->papContexts[cid];
6478	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6479
6480	if (type == SVGA3D_SHADERTYPE_VS)
6481	{
6482	if ( shid < pContext->cVertexShaders
6483	&& pContext->paVertexShader[shid].id == shid)
6484	{
6485	pShader = &pContext->paVertexShader[shid];
6486	rc = ShaderDestroyVertexShader(pContext->pShaderContext, pShader->u.pVertexShader);
6487	AssertRC(rc);
6488	}
6489	}
6490	else
6491	{
6492	Assert(type == SVGA3D_SHADERTYPE_PS);
6493	if ( shid < pContext->cPixelShaders
6494	&& pContext->paPixelShader[shid].id == shid)
6495	{
6496	pShader = &pContext->paPixelShader[shid];
6497	rc = ShaderDestroyPixelShader(pContext->pShaderContext, pShader->u.pPixelShader);
6498	AssertRC(rc);
6499	}
6500	}
6501
6502	if (pShader)
6503	{
6504	if (pShader->pShaderProgram)
6505	RTMemFree(pShader->pShaderProgram);
6506	memset(pShader, 0, sizeof(*pShader));
6507	pShader->id = SVGA3D_INVALID_ID;
6508	}
6509	else
6510	AssertFailedReturn(VERR_INVALID_PARAMETER);
6511
6512	return VINF_SUCCESS;
6513	}
6514
6515	int vmsvga3dShaderSet(PVGASTATE pThis, PVMSVGA3DCONTEXT pContext, uint32_t cid, SVGA3dShaderType type, uint32_t shid)
6516	{
6517	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
6518	AssertReturn(pState, VERR_NO_MEMORY);
6519	int rc;
6520
6521	Log(("vmsvga3dShaderSet cid=%x type=%s shid=%d\n", cid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", shid));
6522
6523	if ( !pContext
6524	&& cid < pState->cContexts
6525	&& pState->papContexts[cid]->id == cid)
6526	pContext = pState->papContexts[cid];
6527	else if (!pContext)
6528	{
6529	AssertMsgFailed(("cid=%#x cContexts=%#x\n", cid, pState->cContexts));
6530	Log(("vmsvga3dShaderSet invalid context id!\n"));
6531	return VERR_INVALID_PARAMETER;
6532	}
6533	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6534
6535	if (type == SVGA3D_SHADERTYPE_VS)
6536	{
6537	/* Save for vm state save/restore. */
6538	pContext->state.shidVertex = shid;
6539	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_VERTEXSHADER;
6540
6541	if ( shid < pContext->cVertexShaders
6542	&& pContext->paVertexShader[shid].id == shid)
6543	{
6544	PVMSVGA3DSHADER pShader = &pContext->paVertexShader[shid];
6545	Assert(type == pShader->type);
6546
6547	rc = ShaderSetVertexShader(pContext->pShaderContext, pShader->u.pVertexShader);
6548	AssertRCReturn(rc, rc);
6549	}
6550	else
6551	if (shid == SVGA_ID_INVALID)
6552	{
6553	/* Unselect shader. */
6554	rc = ShaderSetVertexShader(pContext->pShaderContext, NULL);
6555	AssertRCReturn(rc, rc);
6556	}
6557	else
6558	AssertFailedReturn(VERR_INVALID_PARAMETER);
6559	}
6560	else
6561	{
6562	/* Save for vm state save/restore. */
6563	pContext->state.shidPixel = shid;
6564	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_PIXELSHADER;
6565
6566	Assert(type == SVGA3D_SHADERTYPE_PS);
6567	if ( shid < pContext->cPixelShaders
6568	&& pContext->paPixelShader[shid].id == shid)
6569	{
6570	PVMSVGA3DSHADER pShader = &pContext->paPixelShader[shid];
6571	Assert(type == pShader->type);
6572
6573	rc = ShaderSetPixelShader(pContext->pShaderContext, pShader->u.pPixelShader);
6574	AssertRCReturn(rc, rc);
6575	}
6576	else
6577	if (shid == SVGA_ID_INVALID)
6578	{
6579	/* Unselect shader. */
6580	rc = ShaderSetPixelShader(pContext->pShaderContext, NULL);
6581	AssertRCReturn(rc, rc);
6582	}
6583	else
6584	AssertFailedReturn(VERR_INVALID_PARAMETER);
6585	}
6586
6587	return VINF_SUCCESS;
6588	}
6589
6590	int vmsvga3dShaderSetConst(PVGASTATE pThis, uint32_t cid, uint32_t reg, SVGA3dShaderType type, SVGA3dShaderConstType ctype, uint32_t cRegisters, uint32_t *pValues)
6591	{
6592	PVMSVGA3DCONTEXT pContext;
6593	PVMSVGA3DSTATE pState = pThis->svga.p3dState;
6594	AssertReturn(pState, VERR_NO_MEMORY);
6595	int rc;
6596
6597	Log(("vmsvga3dShaderSetConst cid=%x reg=%x type=%s cregs=%d ctype=%x\n", cid, reg, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", cRegisters, ctype));
6598
6599	if ( cid >= pState->cContexts
6600	\|\| pState->papContexts[cid]->id != cid)
6601	{
6602	Log(("vmsvga3dShaderSetConst invalid context id!\n"));
6603	return VERR_INVALID_PARAMETER;
6604	}
6605	pContext = pState->papContexts[cid];
6606	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6607
6608	for (uint32_t i = 0; i < cRegisters; i++)
6609	{
6610	#ifdef LOG_ENABLED
6611	switch (ctype)
6612	{
6613	case SVGA3D_CONST_TYPE_FLOAT:
6614	{
6615	float pValuesF = (float )pValues;
6616	Log(("ConstantF %d: value=%d, %d, %d, %d\n", reg + i, (int)(pValuesF[i4 + 0] 100.0f), (int)(pValuesF[i4 + 1] 100.0f), (int)(pValuesF[i4 + 2] 100.0f), (int)(pValuesF[i4 + 3] 100.0f)));
6617	break;
6618	}
6619
6620	case SVGA3D_CONST_TYPE_INT:
6621	Log(("ConstantI %d: value=%d, %d, %d, %d\n", reg + i, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]));
6622	break;
6623
6624	case SVGA3D_CONST_TYPE_BOOL:
6625	Log(("ConstantB %d: value=%d, %d, %d, %d\n", reg + i, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]));
6626	break;
6627	}
6628	#endif
6629	vmsvga3dSaveShaderConst(pContext, reg + i, type, ctype, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]);
6630	}
6631
6632	switch (type)
6633	{
6634	case SVGA3D_SHADERTYPE_VS:
6635	switch (ctype)
6636	{
6637	case SVGA3D_CONST_TYPE_FLOAT:
6638	rc = ShaderSetVertexShaderConstantF(pContext->pShaderContext, reg, (const float *)pValues, cRegisters);
6639	break;
6640
6641	case SVGA3D_CONST_TYPE_INT:
6642	rc = ShaderSetVertexShaderConstantI(pContext->pShaderContext, reg, (const int32_t *)pValues, cRegisters);
6643	break;
6644
6645	case SVGA3D_CONST_TYPE_BOOL:
6646	rc = ShaderSetVertexShaderConstantB(pContext->pShaderContext, reg, (const uint8_t *)pValues, cRegisters);
6647	break;
6648
6649	default:
6650	AssertFailedReturn(VERR_INVALID_PARAMETER);
6651	}
6652	AssertRCReturn(rc, rc);
6653	break;
6654
6655	case SVGA3D_SHADERTYPE_PS:
6656	switch (ctype)
6657	{
6658	case SVGA3D_CONST_TYPE_FLOAT:
6659	rc = ShaderSetPixelShaderConstantF(pContext->pShaderContext, reg, (const float *)pValues, cRegisters);
6660	break;
6661
6662	case SVGA3D_CONST_TYPE_INT:
6663	rc = ShaderSetPixelShaderConstantI(pContext->pShaderContext, reg, (const int32_t *)pValues, cRegisters);
6664	break;
6665
6666	case SVGA3D_CONST_TYPE_BOOL:
6667	rc = ShaderSetPixelShaderConstantB(pContext->pShaderContext, reg, (const uint8_t *)pValues, cRegisters);
6668	break;
6669
6670	default:
6671	AssertFailedReturn(VERR_INVALID_PARAMETER);
6672	}
6673	AssertRCReturn(rc, rc);
6674	break;
6675
6676	default:
6677	AssertFailedReturn(VERR_INVALID_PARAMETER);
6678	}
6679
6680	return VINF_SUCCESS;
6681	}
6682
6683	int vmsvga3dOcclusionQueryCreate(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
6684	{
6685	AssertReturn(pState->ext.glGenQueries, VERR_NOT_SUPPORTED);
6686	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6687
6688	GLuint idQuery = 0;
6689	pState->ext.glGenQueries(1, &idQuery);
6690	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6691	AssertReturn(idQuery, VERR_INTERNAL_ERROR);
6692	pContext->occlusion.idQuery = idQuery;
6693	return VINF_SUCCESS;
6694	}
6695
6696	int vmsvga3dOcclusionQueryDelete(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
6697	{
6698	AssertReturn(pState->ext.glDeleteQueries, VERR_NOT_SUPPORTED);
6699	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6700
6701	if (pContext->occlusion.idQuery)
6702	{
6703	pState->ext.glDeleteQueries(1, &pContext->occlusion.idQuery);
6704	}
6705	return VINF_SUCCESS;
6706	}
6707
6708	int vmsvga3dOcclusionQueryBegin(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
6709	{
6710	AssertReturn(pState->ext.glBeginQuery, VERR_NOT_SUPPORTED);
6711	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6712
6713	pState->ext.glBeginQuery(GL_ANY_SAMPLES_PASSED, pContext->occlusion.idQuery);
6714	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6715	return VINF_SUCCESS;
6716	}
6717
6718	int vmsvga3dOcclusionQueryEnd(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
6719	{
6720	AssertReturn(pState->ext.glEndQuery, VERR_NOT_SUPPORTED);
6721	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6722
6723	pState->ext.glEndQuery(GL_ANY_SAMPLES_PASSED);
6724	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6725	return VINF_SUCCESS;
6726	}
6727
6728	int vmsvga3dOcclusionQueryGetData(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, uint32_t *pu32Pixels)
6729	{
6730	AssertReturn(pState->ext.glGetQueryObjectuiv, VERR_NOT_SUPPORTED);
6731	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6732
6733	GLuint pixels = 0;
6734	pState->ext.glGetQueryObjectuiv(pContext->occlusion.idQuery, GL_QUERY_RESULT, &pixels);
6735	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6736
6737	*pu32Pixels = (uint32_t)pixels;
6738	return VINF_SUCCESS;
6739	}

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source: vbox/trunk/src/VBox/Devices/Graphics/DevVGA-SVGA3d-ogl.cpp@ 81428

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