VirtualBox

source: vbox/trunk/src/VBox/HostServices/SharedOpenGL/gllindrv.cpp@ 4071

Last change on this file since 4071 was 4071, checked in by vboxsync, 17 years ago

Biggest check-in ever. New source code headers for all (C) innotek files.
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1/** @file
2 *
3 * VBox OpenGL
4 *
5 * Simple buffered OpenGL functions
6 *
7 * Contributor: Alexander Eichner
8 */
9
10/*
11 * Copyright (C) 2006-2007 innotek GmbH
12 *
13 * This file is part of VirtualBox Open Source Edition (OSE), as
14 * available from http://www.virtualbox.org. This file is free software;
15 * you can redistribute it and/or modify it under the terms of the GNU
16 * General Public License as published by the Free Software Foundation,
17 * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
18 * distribution. VirtualBox OSE is distributed in the hope that it will
19 * be useful, but WITHOUT ANY WARRANTY of any kind.
20 */
21#define GLX_GLXEXT_PROTOTYPES
22
23#include "vboxgl.h"
24#define LOG_GROUP LOG_GROUP_SHARED_OPENGL
25#include <VBox/log.h>
26#include <string.h>
27#include <stdio.h>
28#include <GL/gl.h>
29#include <GL/glx.h>
30#include <GL/glxext.h>
31
32
33/* X11 server connection for all OpenGL clients.
34 * Neccessary because Mesa and DRI cannot handle more than one
35 * connection per thread (only hardware acceleration, software rendering
36 * runs fine with more than one connection).
37 * Would crash in vboxglDisconnect if on every vboxglConnect
38 * a new Display is created */
39Display *glXDisplay = NULL;
40
41static Bool WaitForNotify( Display *dpy, XEvent *event, XPointer arg ) {
42 return (event->type == MapNotify) && (event->xmap.window == (Window) arg);
43}
44
45/* from http://www.mesa3d.org/brianp/sig97/exten.htm */
46GLboolean vboxglCheckExtension(Display *dpy, int screenNum, const char *extName )
47{
48 /*
49 ** Search for extName in the extensions string. Use of strstr()
50 ** is not sufficient because extension names can be prefixes of
51 ** other extension names. Could use strtok() but the constant
52 ** string returned by glGetString can be in read-only memory.
53 */
54 char *p = (char *) glXQueryExtensionsString(dpy, screenNum);
55 char *end;
56 int extNameLen;
57
58 extNameLen = strlen(extName);
59 end = p + strlen(p);
60
61 while (p < end) {
62 int n = strcspn(p, " ");
63 if ((extNameLen == n) && (strncmp(extName, p, n) == 0)) {
64 return GL_TRUE;
65 }
66 p += (n + 1);
67 }
68 return GL_FALSE;
69}
70
71/**
72 * Global init of VBox OpenGL
73 *
74 * @returns VBox error code
75 */
76int vboxglGlobalInit()
77{
78 Log(("vboxglGlobalInit\n"));
79
80 /*vboxInitOpenGLExtensions();*/
81 return VINF_SUCCESS;
82}
83
84/**
85 * Global deinit of VBox OpenGL
86 *
87 * @returns VBox error code
88 */
89int vboxglGlobalUnload()
90{
91 Log(("vboxglGlobalUnload"));
92
93 if (glXDisplay)
94 XCloseDisplay(glXDisplay);
95
96 return VINF_SUCCESS;
97}
98
99/**
100 * Enable OpenGL
101 *
102 * @returns VBox error code
103 * @param pClient Client context
104 */
105int vboxglEnableOpenGL(PVBOXOGLCTX pClient)
106{
107 static int attribs[] = {
108 GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
109 GLX_RENDER_TYPE, GLX_RGBA_BIT,
110 GLX_DOUBLEBUFFER, GL_TRUE, /* Request a double-buffered color buffer with */
111 GLX_RED_SIZE, 1, /* the maximum number of bits per component */
112 GLX_GREEN_SIZE, 1,
113 GLX_BLUE_SIZE, 1,
114 None
115 };
116 int screen_num;
117 XSetWindowAttributes attr;
118 unsigned long mask;
119 int returnedFBConfigs;
120
121 /* we have to set up a rendering context to be able to use glGetString
122 * a window is created but is not mapped to screen (so it's not visible')
123 * and a GLXContext is bound to it */
124 screen_num = DefaultScreen(pClient->dpy);
125 pClient->enable.fbConfig = pClient->glxChooseFBConfig(pClient->dpy, screen_num, attribs, &returnedFBConfigs);
126 Log(("vboxglGetString: returned FBConfigs: %d\n", returnedFBConfigs));
127 pClient->enable.visinfo = pClient->glxGetVisualFromFBConfig(pClient->dpy, pClient->enable.fbConfig[0]);
128 /* Create Window */
129 attr.background_pixel = 0;
130 attr.border_pixel = 0;
131 attr.colormap = XCreateColormap(pClient->dpy, RootWindow(pClient->dpy, screen_num), pClient->enable.visinfo->visual, AllocNone);
132 attr.event_mask = StructureNotifyMask | ExposureMask;
133 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
134 pClient->enable.win = XCreateWindow(pClient->dpy, RootWindow(pClient->dpy, screen_num), 0, 0, 100, 100,
135 0, pClient->enable.visinfo->depth, InputOutput,
136 pClient->enable.visinfo->visual, mask, &attr);
137 /* Create Context */
138 pClient->enable.ctx = pClient->glxCreateNewContext(pClient->dpy, pClient->enable.fbConfig[0], GLX_RGBA_TYPE, NULL, GL_TRUE);
139 glXMakeCurrent(pClient->dpy, pClient->enable.win, pClient->enable.ctx);
140
141 return VINF_SUCCESS;
142}
143
144/**
145 * Disable OpenGL
146 *
147 * @returns VBox error code
148 * @param pClient Client context
149 */
150int vboxglDisableOpenGL(PVBOXOGLCTX pClient)
151{
152 /* Free all data */
153 if (pClient->enable.ctx)
154 {
155 glFlush();
156 glXMakeCurrent(pClient->dpy, None, NULL);
157 XDestroyWindow(pClient->dpy, pClient->enable.win);
158 glXDestroyContext(pClient->dpy, pClient->enable.ctx);
159 XFree(pClient->enable.visinfo);
160 XFree(pClient->enable.fbConfig);
161 }
162
163 return VINF_SUCCESS;
164}
165
166/**
167 * Client connect init
168 *
169 * @returns VBox error code
170 * @param pClient Client context
171 */
172int vboxglConnect(PVBOXOGLCTX pClient)
173{
174 int rc = VERR_NOT_IMPLEMENTED;
175 Log(("vboxglConnect\n"));
176
177 pClient->PixelFormatToFBConfigMapper = NULL;
178 pClient->xWindow = 0;
179
180 if (!glXDisplay)
181 glXDisplay = XOpenDisplay(NULL);
182
183 pClient->dpy = glXDisplay;
184
185 if (pClient->dpy) {
186 int screenNum, major, minor;
187
188 screenNum = DefaultScreen(pClient->dpy);
189 glXQueryVersion(pClient->dpy, &major, &minor);
190
191 if ((major == 1) && (minor >= 3)) {
192 Log(("Server GLX 1.3 supported\n"));
193 pClient->glxChooseFBConfig = (PFNGLXCHOOSEFBCONFIGSGIXPROC) glXGetProcAddressARB(
194 (GLubyte *) "glXChooseFBConfig");
195 pClient->glxGetVisualFromFBConfig = (PFNGLXGETVISUALFROMFBCONFIGSGIXPROC) glXGetProcAddressARB(
196 (GLubyte *) "glXGetVisualFromFBConfig");
197 pClient->glxCreateNewContext = (PFNGLXCREATECONTEXTWITHCONFIGSGIXPROC) glXGetProcAddressARB(
198 (GLubyte *) "glXCreateNewContext");
199 } else if (vboxglCheckExtension(pClient->dpy, screenNum, "GLX_SGIX_fbconfig")) {
200 Log(("GLX_SGIX_fbconfig extension supported\n"));
201 pClient->glxChooseFBConfig = (PFNGLXCHOOSEFBCONFIGSGIXPROC) glXGetProcAddressARB(
202 (GLubyte *) "glXChooseFBConfigSGIX");
203 pClient->glxGetVisualFromFBConfig = (PFNGLXGETVISUALFROMFBCONFIGSGIXPROC) glXGetProcAddressARB(
204 (GLubyte *) "glXGetVisualFromFBConfigSGIX");
205 pClient->glxCreateNewContext = (PFNGLXCREATECONTEXTWITHCONFIGSGIXPROC) glXGetProcAddressARB(
206 (GLubyte *) "glXCreateContextWithConfigSGIX");
207 } else {
208 Log(("Error no FBConfig supported\n"));
209 rc = VERR_NOT_IMPLEMENTED;
210 }
211 if (pClient->glxChooseFBConfig && pClient->glxGetVisualFromFBConfig && pClient->glxCreateNewContext)
212 rc = VINF_SUCCESS;
213 }
214
215 return rc;
216}
217
218/**
219 * Client disconnect cleanup
220 *
221 * @returns VBox error code
222 * @param pClient Client context
223 */
224int vboxglDisconnect(PVBOXOGLCTX pClient)
225{
226 Log(("vboxglDisconnect\n"));
227
228#ifdef VBOX_OGL_DEBUG_WINDOW_OUTPUT
229 if (pClient->xWindow != 0) {
230 XUnmapWindow(pClient->dpy, pClient->xWindow);
231 XDestroyWindow(pClient->dpy, pClient->xWindow);
232 }
233 if (pClient->PixelFormatToFBConfigMapper) {
234 XFree(pClient->PixelFormatToFBConfigMapper);
235 }
236
237 pClient->dpy = NULL;
238 pClient->xWindow = 0;
239 pClient->actFBConfig = NULL;
240#endif
241 return VINF_SUCCESS;
242}
243
244/* Driver functions */
245void vboxglDrvCreateContext(VBOXOGLCTX *pClient, uint8_t *pCmdBuffer)
246{
247 XSetWindowAttributes attr;
248 XVisualInfo *visinfo = NULL;
249 unsigned long mask;
250 GLXFBConfig fbConfig;
251 GLXContextID glrc;
252 int screen_num;
253 XEvent event;
254 OGL_CMD(DrvCreateContext, 1);
255 OGL_PARAM(HDC, hdc);
256
257 Log(("DrvCreateContext %x\n", hdc));
258#ifdef VBOX_OGL_DEBUG_WINDOW_OUTPUT
259
260 screen_num = DefaultScreen(pClient->dpy);
261 fbConfig = pClient->actFBConfig;
262
263 visinfo = pClient->glxGetVisualFromFBConfig(pClient->dpy, fbConfig);
264
265 if (pClient->xWindow == 0) {
266
267 /* window attributes */
268 attr.background_pixel = 0;
269 attr.border_pixel = 0;
270 attr.colormap = XCreateColormap(pClient->dpy, RootWindow(pClient->dpy, screen_num ), visinfo->visual, AllocNone);
271 attr.event_mask = StructureNotifyMask | ExposureMask;
272 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
273 pClient->xWindow = XCreateWindow(pClient->dpy,
274 RootWindow(pClient->dpy, screen_num),
275 0, 0, pClient->winWidth, pClient->winHeight, 0,
276 visinfo->depth, InputOutput,
277 visinfo->visual, mask, &attr);
278 }
279 XResizeWindow(pClient->dpy, pClient->xWindow, pClient->winWidth, pClient->winHeight);
280 pClient->glxContext = pClient->glxCreateNewContext(pClient->dpy, fbConfig, GLX_RGBA_TYPE, NULL, GL_TRUE);
281
282 XMapWindow(pClient->dpy, pClient->xWindow);
283 XIfEvent(pClient->dpy, &event, WaitForNotify, (XPointer)pClient->xWindow );
284
285 glrc = 1;
286 Assert(glrc);
287#else
288 AssertFailed();
289 glrc = 0;
290#endif
291
292 pClient->lastretval = (uint64_t)glrc;
293 pClient->fHasLastError = true;
294 pClient->ulLastError = glGetError();
295}
296
297void vboxglDrvDeleteContext(VBOXOGLCTX *pClient, uint8_t *pCmdBuffer)
298{
299 OGL_CMD(DrvDeleteContext, 1);
300 OGL_PARAM(HGLRC, hglrc);
301 Log(("DrvDeleteContext %x\n", hglrc));
302
303 glXDestroyContext(pClient->dpy, VBOX_OGL_GUEST_TO_HOST_HDC(hglrc));
304 pClient->lastretval = 1;
305 pClient->fHasLastError = true;
306 pClient->ulLastError = glGetError();
307}
308
309void vboxglDrvSetContext(VBOXOGLCTX *pClient, uint8_t *pCmdBuffer)
310{
311 OGL_CMD(DrvSetContext, 2);
312 OGL_PARAM(HDC, hdc);
313 OGL_PARAM(HGLRC, hglrc);
314 Log(("DrvSetContext %x %x\n", hdc, hglrc));
315#ifdef VBOX_OGL_DEBUG_WINDOW_OUTPUT
316
317 pClient->lastretval = glXMakeCurrent(pClient->dpy, pClient->xWindow,
318 VBOX_OGL_GUEST_TO_HOST_HDC(hglrc));
319 if (!pClient->lastretval)
320 Log(("glXMakeCurrent failed\n"));
321 pClient->fHasLastError = true;
322 pClient->ulLastError = glGetError();
323#else
324 AssertFailed();
325#endif
326}
327
328void vboxglDrvCopyContext(VBOXOGLCTX *pClient, uint8_t *pCmdBuffer)
329{
330 OGL_CMD(DrvDeleteContext, 3);
331 OGL_PARAM(HGLRC, hglrcSrc);
332 OGL_PARAM(HGLRC, hglrcDst);
333 OGL_PARAM(UINT, mask);
334 Log(("DrvCopyContext %x %x %x\n", hglrcSrc, hglrcDst, mask));
335
336 glXCopyContext(pClient->dpy, VBOX_OGL_GUEST_TO_HOST_HDC(hglrc), VBOX_OGL_GUEST_TO_HOST_HDC(hglrc), mask);
337 pClient->lastretval = 1;
338 pClient->fHasLastError = true;
339 pClient->ulLastError = glGetError();
340}
341
342void vboxglDrvReleaseContext(VBOXOGLCTX *pClient, uint8_t *pCmdBuffer)
343{
344 OGL_CMD(DrvReleaseContext, 1);
345 OGL_PARAM(HGLRC, hglrc);
346 Log(("DrvReleaseContext %x\n", hglrc));
347 /* clear current selection */
348 pClient->lastretval = glXMakeCurrent(pClient->dpy, None, NULL);
349
350 if (!pClient->lastretval)
351 Log(("glXMakeCurrent failed\n"));
352 pClient->fHasLastError = true;
353 pClient->ulLastError = glGetError();
354}
355
356void vboxglDrvCreateLayerContext(VBOXOGLCTX *pClient, uint8_t *pCmdBuffer)
357{
358 XSetWindowAttributes attr;
359 XVisualInfo *visinfo = NULL;
360 unsigned long mask;
361 GLXFBConfig fbConfig;
362 GLXContextID glrc;
363 int screen_num;
364 XEvent event;
365 OGL_CMD(DrvCreateLayerContext, 2);
366 OGL_PARAM(HDC, hdc);
367 OGL_PARAM(int, iLayerPlane);
368
369 Log(("DrvCreateLayerContext %x\n", hdc));
370#ifdef VBOX_OGL_DEBUG_WINDOW_OUTPUT
371
372 screen_num = DefaultScreen(pClient->dpy);
373 fbConfig = pClient->actFBConfig;
374 visinfo = pClient->glxGetVisualFromFBConfig(pClient->dpy, fbConfig);
375
376 if (pClient->xWindow == 0) {
377
378 /* window attributes */
379 attr.background_pixel = 0;
380 attr.border_pixel = 0;
381 attr.colormap = XCreateColormap(pClient->dpy, RootWindow(pClient->dpy, screen_num ), visinfo->visual, AllocNone);
382 attr.event_mask = StructureNotifyMask | ExposureMask;
383 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
384 pClient->xWindow = XCreateWindow(pClient->dpy,
385 RootWindow(pClient->dpy, screen_num),
386 0, 0, pClient->winWidth, pClient->winHeight, 0,
387 visinfo->depth, InputOutput,
388 visinfo->visual, mask, &attr);
389 }
390 XResizeWindow(pClient->dpy, pClient->xWindow, pClient->winWidth, pClient->winHeight);
391 pClient->glxContext = pClient->glxCreateNewContext(pClient->dpy, fbConfig, GLX_RGBA_TYPE, NULL, GL_TRUE);
392 XMapWindow(pClient->dpy, pClient->xWindow);
393 XIfEvent(pClient->dpy, &event, WaitForNotify, (XPointer)pClient->xWindow );
394
395 glrc = 1;
396 Assert(glrc);
397
398 pClient->lastretval = glrc;
399 pClient->fHasLastError = true;
400 pClient->ulLastError = glGetError();
401#else
402 AssertFailed();
403#endif
404}
405
406void vboxglDrvShareLists(VBOXOGLCTX *pClient, uint8_t *pCmdBuffer)
407{
408 OGL_CMD(DrvShareLists, 3);
409 OGL_PARAM(HGLRC, hglrc1);
410 OGL_PARAM(HGLRC, hglrc2);
411 pClient->lastretval = 0; /** @todo */
412 pClient->fHasLastError = true;
413 pClient->ulLastError = glGetError();
414}
415
416
417void vboxglDrvRealizeLayerPalette(VBOXOGLCTX *pClient, uint8_t *pCmdBuffer)
418{
419 OGL_CMD(DrvRealizeLayerPalette, 3);
420 OGL_PARAM(HDC, hdc);
421 OGL_PARAM(int, iLayerPlane);
422 OGL_PARAM(BOOL, bRealize);
423 pClient->lastretval = 0; /** @todo */
424 pClient->fHasLastError = true;
425 pClient->ulLastError = glGetError();
426}
427
428void vboxglDrvSwapLayerBuffers(VBOXOGLCTX *pClient, uint8_t *pCmdBuffer)
429{
430 OGL_CMD(DrvSwapLayerBuffers, 2);
431 OGL_PARAM(HDC, hdc);
432 OGL_PARAM(UINT, fuPlanes);
433 pClient->lastretval = 0; /** @todo */
434 pClient->fHasLastError = true;
435 pClient->ulLastError = glGetError();
436}
437
438void vboxglDrvSetPixelFormat(VBOXOGLCTX *pClient, uint8_t *pCmdBuffer)
439{
440 int screen_num;
441 OGL_CMD(DrvSetPixelFormat, 4);
442 OGL_PARAM(HDC, hdc);
443 OGL_PARAM(int, iPixelFormat);
444 OGL_PARAM(uint32_t, cx);
445 OGL_PARAM(uint32_t, cy);
446
447 Log(("vboxDrvSetPixelFormat %d\n", iPixelFormat));
448
449 /* Get GLXFBConfig based on the given ID */
450 pClient->actFBConfig = pClient->PixelFormatToFBConfigMapper[iPixelFormat-1];
451 screen_num = DefaultScreen(pClient->dpy);
452
453 pClient->winWidth = cx;
454 pClient->winHeight = cy;
455 pClient->lastretval = true;
456 pClient->fHasLastError = true;
457 pClient->ulLastError = glGetError();
458}
459
460void vboxglDrvSwapBuffers(VBOXOGLCTX *pClient, uint8_t *pCmdBuffer)
461{
462 OGL_CMD(DrvSwapBuffers, 1);
463 OGL_PARAM(HDC, hdc);
464
465 glXSwapBuffers(pClient->dpy, pClient->xWindow);
466 pClient->lastretval = 1;
467 pClient->fHasLastError = true;
468 pClient->ulLastError = glGetError();
469}
470
471void vboxglDrvDescribeLayerPlane(VBOXOGLCTX *pClient, uint8_t *pCmdBuffer)
472{
473 PLAYERPLANEDESCRIPTOR plpd;
474
475 OGL_CMD(DrvDescribeLayerPlane, 4);
476 OGL_PARAM(HDC, hdc);
477 OGL_PARAM(int, iPixelFormat);
478 OGL_PARAM(int, iLayerPlane);
479 OGL_PARAM(UINT, nBytes);
480 Assert(pClient->cbLastParam == nBytes);
481 plpd = (PLAYERPLANEDESCRIPTOR)pClient->pLastParam;
482
483 pClient->lastretval = 0; /** @todo */
484 pClient->fHasLastError = true;
485 pClient->ulLastError = glGetError();
486}
487
488void vboxglDrvSetLayerPaletteEntries(VBOXOGLCTX *pClient, uint8_t *pCmdBuffer)
489{
490 OGL_CMD(DrvSetLayerPaletteEntries, 5);
491 OGL_PARAM(HDC, hdc);
492 OGL_PARAM(int, iLayerPlane);
493 OGL_PARAM(int, iStart);
494 OGL_PARAM(int, cEntries);
495 OGL_MEMPARAM(COLORREF, pcr);
496 pClient->lastretval = 0; /** @todo */
497 pClient->fHasLastError = true;
498 pClient->ulLastError = glGetError();
499}
500
501void vboxglDrvGetLayerPaletteEntries(VBOXOGLCTX *pClient, uint8_t *pCmdBuffer)
502{
503 COLORREF *pcr;
504
505 OGL_CMD(DrvGetLayerPaletteEntries, 4);
506 OGL_PARAM(HDC, hdc);
507 OGL_PARAM(int, iLayerPlane);
508 OGL_PARAM(int, iStart);
509 OGL_PARAM(int, cEntries);
510
511 Assert(pClient->cbLastParam == sizeof(COLORREF)*cEntries);
512 pcr = (COLORREF *)pClient->pLastParam;
513 pClient->lastretval = 0; /** @todo */
514 pClient->fHasLastError = true;
515 pClient->ulLastError = glGetError();
516}
517
518void vboxglDrvDescribePixelFormat(VBOXOGLCTX *pClient, uint8_t *pCmdBuffer)
519{
520 LPPIXELFORMATDESCRIPTOR ppfd;
521 GLXFBConfig *allFBConfigs, matchingFBConfig;
522 int screenNum, glxReturnValue;
523
524 OGL_CMD(DrvDescribePixelFormat, 3);
525 OGL_PARAM(HDC, hdc);
526 OGL_PARAM(int, iPixelFormat);
527 OGL_PARAM(UINT, nBytes);
528 Assert(pClient->cbLastParam == nBytes);
529 ppfd = (LPPIXELFORMATDESCRIPTOR)pClient->pLastParam;
530
531 Log(("iPixelFormat: %d\n", iPixelFormat));
532
533 if (!pClient->PixelFormatToFBConfigMapper) {
534 /* First get number of all visuals for the return value */
535 screenNum = DefaultScreen(pClient->dpy);
536 allFBConfigs = glXGetFBConfigs(pClient->dpy, screenNum,
537 &pClient->numFBConfigs);
538 pClient->PixelFormatToFBConfigMapper = allFBConfigs;
539 }
540
541 if (nBytes == sizeof(PIXELFORMATDESCRIPTOR)) {
542 int redSize, greenSize, blueSize, alphaSize, xVisual, xRenderable;
543 /* Get GLXFBConfig which matches iPixelFormat */
544 matchingFBConfig = pClient->PixelFormatToFBConfigMapper[iPixelFormat-1];
545
546 Log(("Filling values into PIXELFORMATDESCRIPTOR\n"));
547 /* translate all values to theire corresponding Windows ones */
548 ppfd->nSize = sizeof(PIXELFORMATDESCRIPTOR);
549 ppfd->nVersion = 1;
550 ppfd->iLayerType = PFD_MAIN_PLANE;
551 ppfd->dwFlags = 0;
552
553 /* Set cColorBits */
554 glXGetFBConfigAttrib(pClient->dpy, matchingFBConfig, GLX_RED_SIZE, &redSize);
555 glXGetFBConfigAttrib(pClient->dpy, matchingFBConfig, GLX_GREEN_SIZE, &greenSize);
556 glXGetFBConfigAttrib(pClient->dpy, matchingFBConfig, GLX_BLUE_SIZE, &blueSize);
557 glXGetFBConfigAttrib(pClient->dpy, matchingFBConfig, GLX_ALPHA_SIZE, &alphaSize);
558 ppfd->cColorBits = redSize + greenSize + blueSize;
559 ppfd->cRedBits = redSize;
560 ppfd->cBlueBits = blueSize;
561 ppfd->cGreenBits = greenSize;
562 ppfd->cAlphaBits = alphaSize;
563
564 /* Set dwFlags */
565 if (!glXGetFBConfigAttrib(pClient->dpy, matchingFBConfig, GLX_DRAWABLE_TYPE, &glxReturnValue)) {
566 glXGetFBConfigAttrib(pClient->dpy, matchingFBConfig, GLX_VISUAL_ID, &xVisual);
567 glXGetFBConfigAttrib(pClient->dpy, matchingFBConfig, GLX_X_RENDERABLE, &xRenderable);
568 if ((glxReturnValue & GLX_WINDOW_BIT) && xVisual)
569 ppfd->dwFlags |= (PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL);
570 }
571 if (!glXGetFBConfigAttrib(pClient->dpy, matchingFBConfig, GLX_DOUBLEBUFFER, &glxReturnValue)) {
572 if (glxReturnValue)
573 ppfd->dwFlags |= PFD_DOUBLEBUFFER;
574 }
575 /* Set iPixelType */
576 if (!glXGetFBConfigAttrib(pClient->dpy, matchingFBConfig, GLX_RENDER_TYPE, &glxReturnValue)) {
577 if (glxReturnValue & GLX_RGBA_BIT)
578 ppfd->iPixelType = PFD_TYPE_RGBA;
579 else if ((glxReturnValue & GLX_COLOR_INDEX_BIT) & !(glxReturnValue & GLX_RGBA_BIT))
580 ppfd->iPixelType = PFD_TYPE_COLORINDEX;
581 }
582 /* Set cDepthBits */
583 if (!glXGetFBConfigAttrib(pClient->dpy, matchingFBConfig, GLX_DEPTH_SIZE, &glxReturnValue)) {
584 ppfd->cDepthBits = glxReturnValue;
585 } else {
586 ppfd->cDepthBits = 0;
587 }
588 /* Set cStencilBits */
589 if (!glXGetFBConfigAttrib(pClient->dpy, matchingFBConfig, GLX_STENCIL_SIZE, &glxReturnValue)) {
590 ppfd->cStencilBits = glxReturnValue;
591 } else {
592 ppfd->cStencilBits = 0;
593 }
594 /** @todo Fill in the rest */
595 }
596
597 pClient->lastretval = pClient->numFBConfigs;
598 pClient->fHasLastError = true;
599 pClient->ulLastError = glGetError();
600}
601
602RTUINTPTR vboxDrvIsExtensionAvailable(char *pszExtFunctionName)
603{
604 RTUINTPTR pfnProc = (RTUINTPTR)glXGetProcAddress((const GLubyte *)pszExtFunctionName);
605 Log(("vboxDrvIsExtensionAvailable %s -> %d\n", pszExtFunctionName, !!pfnProc));
606 return pfnProc;
607}
608
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