egl.c@ 78376

Last change on this file since 78376 was 76553, checked in by vboxsync, 6 years ago
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1	/* $Id: egl.c 76553 2019-01-01 01:45:53Z vboxsync $ */
2
3	/** @file
4	* VBox OpenGL EGL implentation.
5	*/
6
7	/*
8	* Copyright (C) 2009-2019 Oracle Corporation
9	*
10	* This file is part of VirtualBox Open Source Edition (OSE), as
11	* available from http://www.virtualbox.org. This file is free software;
12	* you can redistribute it and/or modify it under the terms of the GNU
13	* General Public License (GPL) as published by the Free Software
14	* Foundation, in version 2 as it comes in the "COPYING" file of the
15	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
16	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
17	*/
18
19
20	/*********************************************************************************************************************************
21	* Header Files *
22	*********************************************************************************************************************************/
23	#include <iprt/cdefs.h>
24	#include <iprt/types.h>
25
26	#include <EGL/egl.h>
27	#include <GL/glx.h>
28	#include <X11/Xlib.h>
29
30	#include <dlfcn.h>
31	#include <pthread.h>
32	#include <stdio.h>
33	#include <stdlib.h>
34	#include <string.h>
35
36	#define EGL_ASSERT(expr) \
37	if (!(expr)) { printf("Assertion failed: %s\n", #expr); exit(1); }
38
39
40	/*********************************************************************************************************************************
41	* Structures and Typedefs *
42	*********************************************************************************************************************************/
43
44	struct VBEGLTLS
45	{
46	/** The last EGL error. */
47	EGLint cErr;
48	/** The EGL API currently bound to this thread. */
49	EGLenum enmAPI;
50	/** The current context. */
51	EGLContext hCurrent;
52	/** The display bound to the current context. */
53	EGLDisplay hCurrentDisplay;
54	/** The draw surface bound to the current context. */
55	EGLSurface hCurrentDraw;
56	/** The read surface bound to the current context. */
57	EGLSurface hCurrentRead;
58	};
59
60
61	/*********************************************************************************************************************************
62	* Defined Constants And Macros *
63	*********************************************************************************************************************************/
64	/** @note IDs returned for surfaces should always be lower than these constants.
65	*/
66	/** This is OR-ed with a surface ID to mark it as a window, as GLX needs to
67	* know. */
68	#define VBEGL_WINDOW_SURFACE 0x20000000
69	/** This is OR-ed with a surface ID to mark it as a pbuffer, as GLX needs to
70	* know. */
71	#define VBEGL_PBUFFER_SURFACE 0x40000000
72	/** This is OR-ed with a surface ID to mark it as a pixmap, as GLX needs to
73	* know. */
74	#define VBEGL_PIXMAP_SURFACE 0x80000000
75	#define VBEGL_ANY_SURFACE (VBEGL_WINDOW_SURFACE \| VBEGL_PBUFFER_SURFACE \| VBEGL_PIXMAP_SURFACE)
76
77
78	/*********************************************************************************************************************************
79	* Global variables *
80	*********************************************************************************************************************************/
81
82	static pthread_key_t g_tls;
83	static pthread_once_t g_tlsOnce = PTHREAD_ONCE_INIT;
84	static Display *g_pDefaultDisplay = NULL;
85	static pthread_once_t g_defaultDisplayOnce = PTHREAD_ONCE_INIT;
86
87	static void tlsInitOnce(void)
88	{
89	pthread_key_create(&g_tls, NULL);
90	}
91
92	static struct VBEGLTLS *getTls(void)
93	{
94	struct VBEGLTLS *pTls;
95
96	pthread_once(&g_tlsOnce, tlsInitOnce);
97	pTls = (struct VBEGLTLS *)pthread_getspecific(g_tls);
98	if (RT_LIKELY(pTls))
99	return pTls;
100	pTls = (struct VBEGLTLS )malloc(sizeof(pTls));
101	if (!pTls)
102	return NULL;
103	pTls->cErr = EGL_SUCCESS;
104	pTls->enmAPI = EGL_NONE;
105	pTls->hCurrent = EGL_NO_CONTEXT;
106	pTls->hCurrentDisplay = EGL_NO_DISPLAY;
107	pTls->hCurrentDraw = EGL_NO_SURFACE;
108	pTls->hCurrentRead = EGL_NO_SURFACE;
109	if (pthread_setspecific(g_tls, pTls) == 0)
110	return pTls;
111	free(pTls);
112	return NULL;
113	}
114
115	static void defaultDisplayInitOnce(void)
116	{
117	g_pDefaultDisplay = XOpenDisplay(NULL);
118	}
119
120	static EGLBoolean clearEGLError(void)
121	{
122	struct VBEGLTLS *pTls = getTls();
123
124	if (!VALID_PTR(pTls))
125	return EGL_FALSE;
126	pTls->cErr = EGL_SUCCESS;
127	return EGL_TRUE;
128	}
129
130	static EGLBoolean setEGLError(EGLint cErr)
131	{
132	struct VBEGLTLS *pTls = getTls();
133
134	if (pTls)
135	pTls->cErr = cErr;
136	return EGL_FALSE;
137	}
138
139	static EGLBoolean testValidDisplay(EGLNativeDisplayType hDisplay)
140	{
141	void *pSymbol = dlsym(NULL, "gbm_create_device");
142
143	if (hDisplay == EGL_DEFAULT_DISPLAY)
144	return EGL_TRUE;
145	if ((void *)hDisplay == NULL)
146	return EGL_FALSE;
147	/* This is the test that Mesa uses to see if this is a GBM "display". Not
148	* very pretty, but since no one can afford to break Mesa it should be
149	* safe. We need this to detect when the X server tries to load us. */
150	if (pSymbol != NULL && (void *)hDisplay == pSymbol)
151	return EGL_FALSE;
152	return EGL_TRUE;
153	}
154
155	DECLEXPORT(EGLDisplay) eglGetDisplay(EGLNativeDisplayType hDisplay)
156	{
157	Display *pDisplay;
158
159	if (!testValidDisplay(hDisplay))
160	return EGL_NO_DISPLAY;
161	if (!clearEGLError()) /* Set up our tls. */
162	return EGL_NO_DISPLAY;
163	if (hDisplay != EGL_DEFAULT_DISPLAY)
164	pDisplay = hDisplay;
165	else
166	{
167	pthread_once(&g_defaultDisplayOnce, defaultDisplayInitOnce);
168	pDisplay = g_pDefaultDisplay;
169	}
170	if (pDisplay && !strcmp(glXGetClientString(pDisplay, GLX_VENDOR), "Chromium"))
171	return (EGLDisplay) pDisplay;
172	return EGL_NO_DISPLAY;
173	}
174
175	DECLEXPORT(EGLint) eglGetError(void)
176	{
177	struct VBEGLTLS *pTls = getTls();
178
179	if (pTls)
180	return pTls->cErr;
181	return EGL_NOT_INITIALIZED;
182	}
183
184	DECLEXPORT(EGLBoolean) eglInitialize (EGLDisplay hDisplay, EGLint pcMajor, EGLint pcMinor)
185	{
186	if (hDisplay == EGL_NO_DISPLAY)
187	return EGL_FALSE;
188	if (!VALID_PTR(hDisplay))
189	return setEGLError(EGL_BAD_DISPLAY);
190	if (pcMajor)
191	*pcMajor = 1;
192	if (pcMinor)
193	*pcMinor = 4;
194	return clearEGLError();
195	}
196
197	/** @todo This function should terminate all allocated resources. */
198	DECLEXPORT(EGLBoolean) eglTerminate(EGLDisplay hDisplay)
199	{
200	if (!VALID_PTR(hDisplay))
201	return EGL_FALSE;
202	return EGL_TRUE;
203	}
204
205	DECLEXPORT(const char *) eglQueryString(EGLDisplay hDisplay, EGLint name)
206	{
207	RT_NOREF(hDisplay);
208	switch (name)
209	{
210	case EGL_CLIENT_APIS:
211	return "OpenGL";
212	case EGL_VENDOR:
213	return "Chromium";
214	case EGL_VERSION:
215	return "1.4 Chromium";
216	case EGL_EXTENSIONS:
217	return "";
218	default:
219	return NULL;
220	}
221	}
222
223	DECLEXPORT(EGLBoolean) eglGetConfigs (EGLDisplay hDisplay, EGLConfig paConfigs, EGLint caConfigs, EGLint pcaConfigs)
224	{
225	Display pDisplay = (Display )hDisplay;
226	GLXFBConfig *paFBConfigs;
227	int caFBConfigs, i;
228
229	if (!VALID_PTR(pDisplay))
230	return setEGLError(EGL_NOT_INITIALIZED);
231	if (!VALID_PTR(pcaConfigs))
232	return setEGLError(EGL_BAD_PARAMETER);
233	if (caConfigs > 0 && !VALID_PTR(paConfigs))
234	return setEGLError(EGL_BAD_PARAMETER);
235	paFBConfigs = glXGetFBConfigs(pDisplay, DefaultScreen(pDisplay), &caFBConfigs);
236	if (!VALID_PTR(paFBConfigs))
237	return setEGLError(EGL_BAD_PARAMETER);
238	if (caFBConfigs > caConfigs)
239	caFBConfigs = caConfigs;
240	*pcaConfigs = caFBConfigs;
241	for (i = 0; i < caFBConfigs; ++i)
242	paConfigs[i] = (EGLConfig)paFBConfigs[i];
243	XFree(paFBConfigs);
244	return clearEGLError();
245	}
246
247	static int convertEGLAttribToGLX(EGLint a_EGLAttrib)
248	{
249	switch (a_EGLAttrib)
250	{
251	case EGL_BUFFER_SIZE:
252	return GLX_BUFFER_SIZE;
253	case EGL_RED_SIZE:
254	return GLX_RED_SIZE;
255	case EGL_GREEN_SIZE:
256	return GLX_GREEN_SIZE;
257	case EGL_BLUE_SIZE:
258	return GLX_BLUE_SIZE;
259	case EGL_LUMINANCE_SIZE:
260	return GLX_RED_SIZE;
261	case EGL_ALPHA_SIZE:
262	return GLX_ALPHA_SIZE;
263	/* case EGL_ALPHA_MASK_SIZE: */
264	/* case EGL_BIND_TO_TEXTURE_RGB: */
265	/* case EGL_BIND_TO_TEXTURE_RGBA: */
266	/* case EGL_COLOR_BUFFER_TYPE: */
267	/* case EGL_CONFIG_CAVEAT: */
268	case EGL_CONFIG_ID:
269	return GLX_FBCONFIG_ID;
270	/* case EGL_CONFORMANT: */
271	case EGL_DEPTH_SIZE:
272	return GLX_DEPTH_SIZE;
273	case EGL_LEVEL:
274	return GLX_LEVEL;
275	case EGL_MAX_PBUFFER_WIDTH:
276	return GLX_MAX_PBUFFER_WIDTH;
277	case EGL_MAX_PBUFFER_HEIGHT:
278	return GLX_MAX_PBUFFER_HEIGHT;
279	case EGL_MAX_PBUFFER_PIXELS:
280	return GLX_MAX_PBUFFER_PIXELS;
281	/* case EGL_MATCH_NATIVE_PIXMAP: */
282	/* case EGL_MAX_SWAP_INTERVAL: */
283	/* case EGL_MIN_SWAP_INTERVAL: */
284	case EGL_NATIVE_RENDERABLE:
285	return GLX_X_RENDERABLE;
286	case EGL_NATIVE_VISUAL_ID:
287	return GLX_VISUAL_ID;
288	/* case EGL_NATIVE_VISUAL_TYPE: */
289	/* case EGL_RENDERABLE_TYPE: */
290	case EGL_SAMPLE_BUFFERS:
291	return GLX_SAMPLE_BUFFERS;
292	case EGL_SAMPLES:
293	return GLX_SAMPLES;
294	case EGL_STENCIL_SIZE:
295	return GLX_STENCIL_SIZE;
296	/* case EGL_SURFACE_TYPE: */
297	/* case EGL_TRANSPARENT_TYPE: */
298	case EGL_TRANSPARENT_RED_VALUE:
299	return GLX_TRANSPARENT_RED_VALUE;
300	case EGL_TRANSPARENT_GREEN_VALUE:
301	return GLX_TRANSPARENT_GREEN_VALUE;
302	case EGL_TRANSPARENT_BLUE_VALUE:
303	return GLX_TRANSPARENT_BLUE_VALUE;
304	default:
305	return None;
306	}
307	}
308
309	DECLEXPORT(EGLBoolean) eglChooseConfig (EGLDisplay hDisplay, const EGLint paAttribs, EGLConfig paConfigs, EGLint caConfigs,
310	EGLint *pcConfigs)
311	{
312	Display pDisplay = (Display )hDisplay;
313	int aAttribList[256]; /* The list cannot be this long. */
314	unsigned cAttribs = 0, i;
315	const EGLint pAttrib, pAttrib2;
316	EGLint cRenderableType = EGL_OPENGL_ES_BIT;
317	unsigned cConfigCaveat = GLX_DONT_CARE, cConformant = GLX_DONT_CARE;
318	GLXFBConfig *paFBConfigs;
319	int caFBConfigs;
320
321	if (!VALID_PTR(hDisplay))
322	return setEGLError(EGL_NOT_INITIALIZED);
323	if (!VALID_PTR(pcConfigs))
324	return setEGLError(EGL_BAD_PARAMETER);
325	if (caConfigs > 0 && !VALID_PTR(paConfigs))
326	return setEGLError(EGL_BAD_PARAMETER);
327	for (pAttrib = paAttribs; pAttrib != NULL && *pAttrib != EGL_NONE; pAttrib += 2)
328	{
329	bool fSkip = false;
330	int cGLXAttrib;
331
332	/* Check for illegal values. */
333	if ((pAttrib == EGL_LEVEL \|\| pAttrib == EGL_MATCH_NATIVE_PIXMAP) && pAttrib[1] == EGL_DONT_CARE)
334	return setEGLError(EGL_BAD_ATTRIBUTE);
335	/* Check for values we can't handle. */
336	if ( (*pAttrib == EGL_ALPHA_MASK_SIZE)
337	&& pAttrib[1] != EGL_DONT_CARE && pAttrib[1] != 0)
338	return setEGLError(EGL_BAD_ACCESS);
339	/** @todo try creating a pixmap from a native one with the configurations returned. */
340	if (*pAttrib == EGL_MATCH_NATIVE_PIXMAP)
341	return setEGLError(EGL_BAD_ACCESS);
342	if ( ( pAttrib == EGL_MIN_SWAP_INTERVAL \|\| pAttrib == EGL_MAX_SWAP_INTERVAL
343	\|\| pAttrib == EGL_BIND_TO_TEXTURE_RGB \|\| pAttrib == EGL_BIND_TO_TEXTURE_RGBA)
344	&& pAttrib[1] != EGL_DONT_CARE)
345	return setEGLError(EGL_BAD_ACCESS);
346	/* Ignore attributes which are repeated later. */
347	for (pAttrib2 = pAttrib + 2; *pAttrib2 != EGL_NONE; pAttrib2 += 2)
348	if (pAttrib2 == pAttrib)
349	{
350	fSkip = true;
351	break;
352	}
353
354	if (fSkip)
355	continue;
356	cGLXAttrib = convertEGLAttribToGLX(*pAttrib);
357	if (cGLXAttrib != None)
358	{
359	aAttribList[cAttribs] = cGLXAttrib;
360	if (pAttrib[1] == EGL_DONT_CARE)
361	aAttribList[cAttribs + 1] = GLX_DONT_CARE;
362	else
363	aAttribList[cAttribs + 1] = pAttrib[1];
364	cAttribs += 2;
365	}
366	else
367	{
368	switch (*pAttrib)
369	{
370	case EGL_COLOR_BUFFER_TYPE:
371	aAttribList[cAttribs] = GLX_X_VISUAL_TYPE;
372	aAttribList[cAttribs + 1] = pAttrib[1] == EGL_DONT_CARE ? GLX_DONT_CARE
373	: pAttrib[1] == EGL_RGB_BUFFER ? GLX_TRUE_COLOR
374	: pAttrib[1] == EGL_LUMINANCE_BUFFER ? GLX_GRAY_SCALE
375	: GL_FALSE;
376	if ( *pAttrib == EGL_COLOR_BUFFER_TYPE
377	&& pAttrib[1] != EGL_DONT_CARE && pAttrib[1] != EGL_RGB_BUFFER)
378	return setEGLError(EGL_BAD_ACCESS);
379	break;
380	case EGL_CONFIG_CAVEAT:
381	cConfigCaveat = pAttrib[1] == EGL_DONT_CARE ? GLX_DONT_CARE
382	: pAttrib[1] == EGL_NONE ? GLX_NONE
383	: pAttrib[1] == EGL_SLOW_CONFIG ? GLX_SLOW_CONFIG
384	: pAttrib[1] == EGL_NON_CONFORMANT_CONFIG ? GLX_NON_CONFORMANT_CONFIG
385	: GL_FALSE;
386	if (!cConfigCaveat)
387	return setEGLError(EGL_BAD_ATTRIBUTE);
388	cAttribs -= 2;
389	break;
390	case EGL_CONFORMANT:
391	if (pAttrib[1] != EGL_OPENGL_BIT && pAttrib[1] != 0)
392	return setEGLError(EGL_BAD_ACCESS);
393	cConformant = pAttrib[1] == EGL_OPENGL_BIT ? GL_TRUE : GL_FALSE;
394	cAttribs -= 2;
395	break;
396	case EGL_NATIVE_VISUAL_TYPE:
397	aAttribList[cAttribs] = GLX_X_VISUAL_TYPE;
398	aAttribList[cAttribs + 1] = pAttrib[1] == EGL_DONT_CARE ? GLX_DONT_CARE
399	: pAttrib[1] == StaticGray ? GLX_STATIC_GRAY
400	: pAttrib[1] == StaticColor ? GLX_STATIC_COLOR
401	: pAttrib[1] == TrueColor ? GLX_TRUE_COLOR
402	: pAttrib[1] == GrayScale ? GLX_GRAY_SCALE
403	: pAttrib[1] == PseudoColor ? GLX_PSEUDO_COLOR
404	: pAttrib[1] == DirectColor ? GLX_DIRECT_COLOR
405	: GL_FALSE;
406	break;
407	case EGL_RENDERABLE_TYPE:
408	cRenderableType = pAttrib[1];
409	cAttribs -= 2; /* We did not add anything to the list. */
410	break;
411	case EGL_SURFACE_TYPE:
412	if (pAttrib[1] & ~(EGL_PBUFFER_BIT \| EGL_PIXMAP_BIT \| EGL_WINDOW_BIT))
413	return setEGLError(EGL_BAD_ACCESS);
414	aAttribList[cAttribs] = GLX_DRAWABLE_TYPE;
415	aAttribList[cAttribs + 1] = (pAttrib[1] & EGL_PBUFFER_BIT ? GLX_PBUFFER_BIT : 0)
416	\| (pAttrib[1] & EGL_PIXMAP_BIT ? GLX_PIXMAP_BIT : 0)
417	\| (pAttrib[1] & EGL_WINDOW_BIT ? GLX_WINDOW_BIT : 0);
418	break;
419	case EGL_TRANSPARENT_TYPE:
420	aAttribList[cAttribs] = GLX_TRANSPARENT_TYPE;
421	aAttribList[cAttribs + 1] = pAttrib[1] == EGL_DONT_CARE ? GLX_DONT_CARE
422	: pAttrib[1] == EGL_NONE ? GLX_NONE
423	: pAttrib[1] == EGL_TRANSPARENT_RGB ? GLX_TRANSPARENT_RGB
424	: GL_FALSE;
425	break;
426	default:
427	return setEGLError(EGL_BAD_ATTRIBUTE);
428	}
429	cAttribs += 2;
430	}
431	}
432	if (cConfigCaveat != GLX_DONT_CARE \|\| cConformant != GLX_DONT_CARE)
433	{
434	aAttribList[cAttribs] = GLX_CONFIG_CAVEAT;
435	aAttribList[cAttribs + 1] = cConformant == GL_FALSE ? GLX_NON_CONFORMANT_CONFIG
436	: cConfigCaveat == EGL_SLOW_CONFIG ? GLX_SLOW_CONFIG
437	: GLX_NONE;
438	cAttribs += 2;
439	}
440	aAttribList[cAttribs] = GLX_RENDER_TYPE;
441	aAttribList[cAttribs + 1] = GLX_RGBA_BIT;
442	cAttribs += 2;
443	if (paAttribs != NULL)
444	{
445	aAttribList[cAttribs] = None;
446	EGL_ASSERT(cAttribs < RT_ELEMENTS(aAttribList));
447	if (!(cRenderableType & EGL_OPENGL_BIT))
448	return setEGLError(EGL_BAD_ACCESS);
449	}
450	paFBConfigs = glXChooseFBConfig(pDisplay, DefaultScreen(pDisplay), paAttribs != NULL ? aAttribList : NULL, &caFBConfigs);
451	if (paFBConfigs == NULL)
452	return setEGLError(EGL_BAD_ACCESS);
453	*pcConfigs = caFBConfigs;
454	for (i = 0; (GLint)i < caConfigs && (GLint)i < caFBConfigs; ++i)
455	paConfigs[i] = (EGLConfig)paFBConfigs[i];
456	XFree(paFBConfigs);
457	return clearEGLError();
458	}
459
460	DECLEXPORT(EGLBoolean) eglGetConfigAttrib (EGLDisplay hDisplay, EGLConfig cConfig, EGLint cAttribute, EGLint *pValue)
461	{
462	Display pDisplay = (Display )hDisplay;
463	int cGLXAttribute = convertEGLAttribToGLX(cAttribute);
464	int cValue;
465
466	if (!VALID_PTR(hDisplay))
467	return setEGLError(EGL_NOT_INITIALIZED);
468	if (!VALID_PTR(pValue))
469	return setEGLError(EGL_BAD_PARAMETER);
470	if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, GLX_FBCONFIG_ID, &cValue))
471	return setEGLError(EGL_BAD_CONFIG);
472	if (cGLXAttribute != None)
473	{
474	if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, cGLXAttribute, &cValue))
475	return setEGLError(EGL_BAD_ACCESS);
476	*pValue = cValue;
477	return clearEGLError();
478	}
479	switch (cAttribute)
480	{
481	case EGL_ALPHA_MASK_SIZE:
482	*pValue = 0;
483	return clearEGLError();
484	case EGL_LUMINANCE_SIZE:
485	if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, GLX_X_VISUAL_TYPE, &cValue))
486	return setEGLError(EGL_BAD_ACCESS);
487	if (cValue == GLX_STATIC_GRAY \|\| cValue == GLX_GRAY_SCALE)
488	{
489	if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, GLX_RED_SIZE, &cValue))
490	return setEGLError(EGL_BAD_ACCESS);
491	*pValue = cValue;
492	}
493	else
494	*pValue = 0;
495	return clearEGLError();
496	case EGL_COLOR_BUFFER_TYPE:
497	if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, GLX_X_VISUAL_TYPE, &cValue))
498	return setEGLError(EGL_BAD_ACCESS);
499	if (cValue == GLX_STATIC_GRAY \|\| cValue == GLX_GRAY_SCALE)
500	*pValue = EGL_LUMINANCE_BUFFER;
501	else
502	*pValue = EGL_RGB_BUFFER;
503	return clearEGLError();
504	case EGL_CONFIG_CAVEAT:
505	if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, GLX_CONFIG_CAVEAT, &cValue))
506	return setEGLError(EGL_BAD_ACCESS);
507	*pValue = cValue == GLX_NONE ? EGL_NONE : cValue == GLX_SLOW_CONFIG ? EGL_SLOW_CONFIG : GLX_NON_CONFORMANT_CONFIG;
508	return clearEGLError();
509	case EGL_CONFORMANT:
510	if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, GLX_CONFIG_CAVEAT, &cValue))
511	return setEGLError(EGL_BAD_ACCESS);
512	*pValue = cValue == GLX_NON_CONFORMANT_CONFIG ? 0 : EGL_OPENGL_BIT;
513	return clearEGLError();
514	case EGL_MATCH_NATIVE_PIXMAP:
515	case EGL_MIN_SWAP_INTERVAL:
516	case EGL_MAX_SWAP_INTERVAL:
517	return setEGLError(EGL_BAD_ACCESS);
518	case EGL_NATIVE_VISUAL_TYPE:
519	if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, GLX_X_VISUAL_TYPE, &cValue))
520	return setEGLError(EGL_BAD_ACCESS);
521	*pValue = cValue == GLX_STATIC_GRAY ? StaticGray
522	: cValue == GLX_STATIC_COLOR ? StaticColor
523	: cValue == GLX_TRUE_COLOR ? TrueColor
524	: cValue == GLX_GRAY_SCALE ? GrayScale
525	: cValue == GLX_PSEUDO_COLOR ? PseudoColor
526	: cValue == GLX_DIRECT_COLOR ? DirectColor
527	: -1;
528	return clearEGLError();
529	case EGL_RENDERABLE_TYPE:
530	*pValue = EGL_OPENGL_BIT;
531	return clearEGLError();
532	case EGL_SURFACE_TYPE:
533	if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, GLX_DRAWABLE_TYPE, &cValue))
534	return setEGLError(EGL_BAD_ACCESS);
535	*pValue = (cValue & GLX_PBUFFER_BIT ? EGL_PBUFFER_BIT : 0)
536	\| (cValue & GLX_PIXMAP_BIT ? EGL_PIXMAP_BIT : 0)
537	\| (cValue & GLX_WINDOW_BIT ? EGL_WINDOW_BIT : 0);
538	return clearEGLError();
539	case EGL_TRANSPARENT_TYPE:
540	if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, GLX_TRANSPARENT_TYPE, &cValue))
541	return setEGLError(EGL_BAD_ACCESS);
542	*pValue = cValue == GLX_NONE ? EGL_NONE
543	: cValue == GLX_TRANSPARENT_RGB ? EGL_TRANSPARENT_RGB
544	: EGL_FALSE;
545	return *pValue != EGL_FALSE ? clearEGLError() : setEGLError(EGL_BAD_ACCESS);
546	default:
547	return setEGLError(EGL_BAD_ATTRIBUTE);
548	}
549	return clearEGLError();
550	}
551
552	DECLEXPORT(EGLSurface) eglCreateWindowSurface(EGLDisplay hDisplay, EGLConfig config, EGLNativeWindowType hWindow,
553	const EGLint *paAttributes)
554	{
555	Display pDisplay = (Display )hDisplay;
556	GLXWindow hGLXWindow;
557
558	if (!VALID_PTR(hDisplay))
559	{
560	setEGLError(EGL_NOT_INITIALIZED);
561	return EGL_NO_SURFACE;
562	}
563	if (paAttributes != NULL) /* Sanity test only. */
564	while (*paAttributes != EGL_NONE)
565	{
566	if (*paAttributes != EGL_RENDER_BUFFER)
567	{
568	setEGLError(EGL_BAD_MATCH);
569	return EGL_NO_SURFACE;
570	}
571	paAttributes += 2;
572	}
573	hGLXWindow = glXCreateWindow(pDisplay, (GLXFBConfig)config, (Window)hWindow, NULL);
574	if (hGLXWindow == None)
575	{
576	setEGLError(EGL_BAD_ALLOC);
577	return EGL_NO_SURFACE;
578	}
579	EGL_ASSERT(hGLXWindow < VBEGL_WINDOW_SURFACE); /* Greater than the maximum XID. */
580	clearEGLError();
581	return (EGLSurface)(hGLXWindow \| VBEGL_WINDOW_SURFACE);
582	}
583
584	static void setAttribute(int pcStoreIndex, int pcCurIndex, int *paGLXAttributes, int cAttribute, int cValue)
585	{
586	if (*pcStoreIndex < 0)
587	{
588	pcStoreIndex = pcCurIndex;
589	*pcCurIndex += 2;
590	paGLXAttributes[*pcStoreIndex] = cAttribute;
591	}
592	paGLXAttributes[*pcStoreIndex + 1] = cValue;
593	}
594
595	DECLEXPORT(EGLSurface) eglCreatePbufferSurface(EGLDisplay hDisplay, EGLConfig config, EGLint const *paAttributes)
596	{
597	Display pDisplay = (Display )hDisplay;
598	enum { CPS_WIDTH = 0, CPS_HEIGHT, CPS_LARGEST, CPS_PRESERVED, CPS_TEX_FORMAT, CPS_TEX_TARGET, CPS_MIPMAP_TEX, CPS_END };
599	int acIndices[CPS_END];
600	int aAttributes[CPS_END * 2];
601	int cIndex = 0;
602	unsigned i;
603	GLXPbuffer hPbuffer;
604
605	if (!VALID_PTR(hDisplay))
606	{
607	setEGLError(EGL_NOT_INITIALIZED);
608	return EGL_NO_SURFACE;
609	}
610	for (i = 0; i < RT_ELEMENTS(acIndices); ++i)
611	acIndices[i] = -1;
612	if (paAttributes != NULL)
613	while (*paAttributes != EGL_NONE)
614	{
615	switch (*paAttributes)
616	{
617	case EGL_WIDTH:
618	setAttribute(&acIndices[CPS_WIDTH], &cIndex, aAttributes, GLX_PBUFFER_WIDTH, paAttributes[1]);
619	break;
620	case EGL_HEIGHT:
621	setAttribute(&acIndices[CPS_HEIGHT], &cIndex, aAttributes, GLX_LARGEST_PBUFFER, paAttributes[1]);
622	break;
623	case EGL_LARGEST_PBUFFER:
624	setAttribute(&acIndices[CPS_LARGEST], &cIndex, aAttributes, GLX_PBUFFER_HEIGHT, paAttributes[1]);
625	break;
626	case EGL_BUFFER_PRESERVED:
627	setAttribute(&acIndices[CPS_PRESERVED], &cIndex, aAttributes, GLX_PRESERVED_CONTENTS, paAttributes[1]);
628	break;
629	case EGL_TEXTURE_FORMAT:
630	setAttribute(&acIndices[CPS_TEX_FORMAT], &cIndex, aAttributes, GLX_TEXTURE_FORMAT_EXT, paAttributes[1]);
631	break;
632	case EGL_TEXTURE_TARGET:
633	setAttribute(&acIndices[CPS_TEX_TARGET], &cIndex, aAttributes, GLX_TEXTURE_TARGET_EXT, paAttributes[1]);
634	break;
635	case EGL_MIPMAP_TEXTURE:
636	setAttribute(&acIndices[CPS_MIPMAP_TEX], &cIndex, aAttributes, GLX_MIPMAP_TEXTURE_EXT, paAttributes[1]);
637	break;
638	case EGL_VG_ALPHA_FORMAT:
639	case EGL_VG_COLORSPACE:
640	{
641	setEGLError(EGL_BAD_MATCH);
642	return EGL_NO_SURFACE;
643	}
644	}
645	paAttributes += 2;
646	}
647	EGL_ASSERT((unsigned)cIndex < RT_ELEMENTS(aAttributes) - 1U);
648	aAttributes[cIndex + 1] = None;
649	hPbuffer = glXCreatePbuffer(pDisplay, (GLXFBConfig)config, aAttributes);
650	if (hPbuffer == None)
651	{
652	setEGLError(EGL_BAD_ALLOC);
653	return EGL_NO_SURFACE;
654	}
655	EGL_ASSERT(hPbuffer < VBEGL_WINDOW_SURFACE); /* Greater than the maximum XID. */
656	clearEGLError();
657	return (EGLSurface)(hPbuffer \| VBEGL_PBUFFER_SURFACE);
658	}
659
660	DECLEXPORT(EGLSurface) eglCreatePixmapSurface(EGLDisplay hDisplay, EGLConfig config, EGLNativePixmapType hPixmap,
661	const EGLint *paAttributes)
662	{
663	Display pDisplay = (Display )hDisplay;
664	GLXPixmap hGLXPixmap;
665
666	if (!VALID_PTR(hDisplay))
667	{
668	setEGLError(EGL_NOT_INITIALIZED);
669	return EGL_NO_SURFACE;
670	}
671	if (paAttributes != NULL) /* Sanity test only. */
672	if (*paAttributes != EGL_NONE)
673	{
674	if (paAttributes == EGL_VG_COLORSPACE \|\| paAttributes == EGL_VG_ALPHA_FORMAT)
675	{
676	setEGLError(EGL_BAD_MATCH);
677	return EGL_NO_SURFACE;
678	}
679	else
680	{
681	setEGLError(EGL_BAD_ATTRIBUTE);
682	return EGL_NO_SURFACE;
683	}
684	}
685	hGLXPixmap = glXCreatePixmap(pDisplay, (GLXFBConfig)config, (Pixmap)hPixmap, NULL);
686	if (hGLXPixmap == None)
687	{
688	setEGLError(EGL_BAD_MATCH);
689	return EGL_NO_SURFACE;
690	}
691	EGL_ASSERT(hGLXPixmap < VBEGL_WINDOW_SURFACE); /* Greater than the maximum XID. */
692	clearEGLError();
693	return (EGLSurface)(hGLXPixmap \| VBEGL_PIXMAP_SURFACE);
694	}
695
696	DECLEXPORT(EGLBoolean) eglDestroySurface(EGLDisplay hDisplay, EGLSurface hSurface)
697	{
698	Display pDisplay = (Display )hDisplay;
699
700	if (!VALID_PTR(hDisplay))
701	return setEGLError(EGL_NOT_INITIALIZED);
702	switch ((GLXDrawable)hSurface & VBEGL_ANY_SURFACE)
703	{
704	case VBEGL_WINDOW_SURFACE:
705	glXDestroyWindow(pDisplay, (GLXWindow)hSurface & ~VBEGL_WINDOW_SURFACE);
706	return clearEGLError();
707	case VBEGL_PBUFFER_SURFACE:
708	glXDestroyPbuffer(pDisplay, (GLXPbuffer)hSurface & ~VBEGL_PBUFFER_SURFACE);
709	return clearEGLError();
710	case VBEGL_PIXMAP_SURFACE:
711	glXDestroyPixmap(pDisplay, (GLXPixmap)hSurface & ~VBEGL_PIXMAP_SURFACE);
712	return clearEGLError();
713	default:
714	return setEGLError(EGL_BAD_SURFACE);
715	}
716	}
717
718	DECLEXPORT(EGLBoolean) eglSurfaceAttrib(EGLDisplay hDisplay, EGLSurface hSurface, EGLint cAttribute, EGLint cValue)
719	{
720	NOREF(hDisplay);
721	NOREF(hSurface);
722	NOREF(cValue);
723	switch (cAttribute)
724	{
725	case EGL_MIPMAP_LEVEL:
726	case EGL_MULTISAMPLE_RESOLVE:
727	case EGL_SWAP_BEHAVIOR:
728	return setEGLError(EGL_BAD_MATCH);
729	default:
730	return setEGLError(EGL_BAD_ATTRIBUTE);
731	}
732	}
733
734	DECLEXPORT(EGLBoolean) eglQuerySurface(EGLDisplay hDisplay, EGLSurface hSurface, EGLint cAttribute, EGLint *cValue)
735	{
736	NOREF(hDisplay);
737	NOREF(hSurface);
738	NOREF(cAttribute);
739	NOREF(cValue);
740	return setEGLError(EGL_BAD_MATCH);
741	}
742
743	DECLEXPORT(EGLBoolean) eglBindTexImage(EGLDisplay hDisplay, EGLSurface hSurface, EGLint cBuffer)
744	{
745	NOREF(hDisplay);
746	NOREF(hSurface);
747	NOREF(cBuffer);
748	return setEGLError(EGL_BAD_MATCH);
749	}
750
751	DECLEXPORT(EGLBoolean) eglReleaseTexImage(EGLDisplay hDisplay, EGLSurface hSurface, EGLint cBuffer)
752	{
753	NOREF(hDisplay);
754	NOREF(hSurface);
755	NOREF(cBuffer);
756	return setEGLError(EGL_BAD_MATCH);
757	}
758
759	DECLEXPORT(EGLBoolean) eglBindAPI(EGLenum enmApi)
760	{
761	return enmApi == EGL_OPENGL_API ? clearEGLError() : setEGLError(EGL_BAD_PARAMETER);
762	}
763
764	DECLEXPORT(EGLenum) eglQueryAPI(void)
765	{
766	return EGL_OPENGL_API;
767	}
768
769	DECLEXPORT(EGLContext) eglCreateContext(EGLDisplay hDisplay, EGLConfig hConfig, EGLContext hSharedContext,
770	const EGLint *paAttribs)
771	{
772	Display pDisplay = (Display )hDisplay;
773	GLXContext hNewContext;
774
775	if (!VALID_PTR(hDisplay))
776	{
777	setEGLError(EGL_NOT_INITIALIZED);
778	return EGL_NO_CONTEXT;
779	}
780	if (paAttribs != NULL && *paAttribs != EGL_NONE)
781	{
782	setEGLError(EGL_BAD_ATTRIBUTE);
783	return EGL_NO_CONTEXT;
784	}
785	hNewContext = glXCreateNewContext(pDisplay, (GLXFBConfig)hConfig, GLX_RGBA_TYPE, (GLXContext)hSharedContext, true);
786	if (hNewContext)
787	{
788	clearEGLError();
789	return (EGLContext)hNewContext;
790	}
791	setEGLError(EGL_BAD_MATCH);
792	return EGL_NO_CONTEXT;
793	}
794
795	DECLEXPORT(EGLBoolean) eglDestroyContext(EGLDisplay hDisplay, EGLContext hContext)
796	{
797	Display pDisplay = (Display )hDisplay;
798
799	if (!VALID_PTR(hDisplay))
800	return setEGLError(EGL_NOT_INITIALIZED);
801	glXDestroyContext(pDisplay, (GLXContext) hContext);
802	return clearEGLError();
803	}
804
805	DECLEXPORT(EGLBoolean) eglMakeCurrent(EGLDisplay hDisplay, EGLSurface hDraw, EGLSurface hRead, EGLContext hContext)
806	{
807	Display pDisplay = (Display )hDisplay;
808	GLXDrawable hGLXDraw = hDraw == EGL_NO_SURFACE ? None : (GLXDrawable)hDraw & ~VBEGL_ANY_SURFACE;
809	GLXDrawable hGLXRead = hRead == EGL_NO_SURFACE ? None : (GLXDrawable)hRead & ~VBEGL_ANY_SURFACE;
810	GLXContext hGLXContext = hContext == EGL_NO_CONTEXT ? None : (GLXContext)hContext;
811	struct VBEGLTLS *pTls = getTls();
812
813	if (!VALID_PTR(hDisplay) \|\| !VALID_PTR(pTls))
814	return setEGLError(EGL_NOT_INITIALIZED);
815	if (glXMakeContextCurrent(pDisplay, hGLXDraw, hGLXRead, hGLXContext))
816	{
817	pTls->hCurrent = hContext;
818	pTls->hCurrentDraw = hDraw;
819	pTls->hCurrentRead = hRead;
820	return clearEGLError();
821	}
822	else
823	return setEGLError(EGL_BAD_MATCH);
824	}
825
826	DECLEXPORT(EGLContext) eglGetCurrentContext(void)
827	{
828	struct VBEGLTLS *pTls = getTls();
829
830	if (!VALID_PTR(pTls))
831	return EGL_NO_CONTEXT;
832	clearEGLError();
833	return pTls->hCurrent;
834	}
835
836	DECLEXPORT(EGLSurface) eglGetCurrentSurface(EGLint cOp)
837	{
838	struct VBEGLTLS *pTls = getTls();
839
840	if (!VALID_PTR(pTls))
841	return EGL_NO_SURFACE;
842	clearEGLError();
843	switch (cOp)
844	{
845	case EGL_DRAW:
846	return pTls->hCurrentDraw;
847	case EGL_READ:
848	return pTls->hCurrentRead;
849	default:
850	setEGLError(EGL_BAD_PARAMETER);
851	return EGL_NO_SURFACE;
852	}
853	}
854
855	DECLEXPORT(EGLDisplay) eglGetCurrentDisplay(void)
856	{
857	struct VBEGLTLS *pTls;
858
859	pTls = getTls();
860	if (!VALID_PTR(pTls))
861	return EGL_NO_DISPLAY;
862	clearEGLError();
863	return pTls->hCurrentDisplay;
864	}
865
866	DECLEXPORT(EGLBoolean) eglQueryContext(EGLDisplay hDisplay, EGLContext hContext, EGLint cAttribute, EGLint *pcValue)
867	{
868	Display pDisplay = (Display )hDisplay;
869
870	if (!VALID_PTR(hDisplay))
871	return setEGLError(EGL_NOT_INITIALIZED);
872	if (!VALID_PTR(pcValue))
873	return setEGLError(EGL_BAD_PARAMETER);
874	switch (cAttribute)
875	{
876	case EGL_CONFIG_ID:
877	{
878	int cValue = 0;
879
880	if (glXQueryContext(pDisplay, (GLXContext)hContext, GLX_FBCONFIG_ID, &cValue) == Success)
881	{
882	*pcValue = cValue;
883	return clearEGLError();
884	}
885	return setEGLError(EGL_BAD_MATCH);
886	}
887	case EGL_CONTEXT_CLIENT_TYPE:
888	*pcValue = EGL_OPENGL_API;
889	return clearEGLError();
890	case EGL_CONTEXT_CLIENT_VERSION:
891	*pcValue = 0;
892	return clearEGLError();
893	case EGL_RENDER_BUFFER:
894	*pcValue = EGL_BACK_BUFFER;
895	return clearEGLError();
896	default:
897	return setEGLError(EGL_BAD_ATTRIBUTE);
898	}
899	}
900
901	DECLEXPORT(EGLBoolean) eglWaitClient(void)
902	{
903	glXWaitGL();
904	return clearEGLError();
905	}
906
907	DECLEXPORT(EGLBoolean) eglWaitGL(void)
908	{
909	return setEGLError(EGL_BAD_PARAMETER); /* OpenGL ES only. */
910	}
911
912	DECLEXPORT(EGLBoolean) eglWaitNative(EGLint cEngine)
913	{
914	if (cEngine != EGL_CORE_NATIVE_ENGINE)
915	return setEGLError(EGL_BAD_PARAMETER);
916	glXWaitX();
917	return clearEGLError();
918	}
919
920	DECLEXPORT(EGLBoolean) eglSwapBuffers(EGLDisplay hDisplay, EGLSurface hSurface)
921	{
922	Display pDisplay = (Display )hDisplay;
923
924	if (!VALID_PTR(hDisplay))
925	return setEGLError(EGL_NOT_INITIALIZED);
926	glXSwapBuffers(pDisplay, (GLXDrawable)hSurface & ~VBEGL_ANY_SURFACE);
927	return clearEGLError();
928	}
929
930	/** @todo Work out how this fits over what Chromium has to offer. */
931	DECLEXPORT(EGLBoolean) eglCopyBuffers(EGLDisplay hDisplay, EGLSurface hSurface, EGLNativePixmapType hPixmap)
932	{
933	Display pDisplay = (Display )hDisplay;
934
935	if (!VALID_PTR(pDisplay))
936	return setEGLError(EGL_NOT_INITIALIZED);
937
938	NOREF(hSurface);
939	NOREF(hPixmap);
940	return setEGLError(EGL_BAD_MATCH);
941	}
942
943	DECLEXPORT(EGLBoolean) eglSwapInterval (EGLDisplay dpy, EGLint interval)
944	{
945	NOREF(dpy);
946	NOREF(interval);
947	return EGL_TRUE;
948	}
949
950	typedef void (*VBEGLFuncPtr)(void);
951	DECLEXPORT(VBEGLFuncPtr)eglGetProcAddress(const char *pszName)
952	{
953	clearEGLError();
954	return glXGetProcAddress((const GLubyte *)pszName);
955	}
956
957	DECLEXPORT(EGLBoolean) eglReleaseThread()
958	{
959	struct VBEGLTLS *pTls = getTls();
960
961	if (!(pTls))
962	return EGL_TRUE;
963	free(pTls);
964	/* Can this fail with ENOMEM? */
965	pthread_setspecific(g_tls, NULL);
966	return EGL_TRUE;
967	}

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source: vbox/trunk/src/VBox/Additions/common/crOpenGL/egl.c@ 78376

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