2 * X11DRV OpenGL functions
4 * Copyright 2000 Lionel Ulmer
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include "wine/port.h"
28 #include "wine/library.h"
29 #include "wine/debug.h"
31 WINE_DEFAULT_DEBUG_CHANNEL(opengl);
33 #if defined(HAVE_GL_GL_H) && defined(HAVE_GL_GLX_H)
39 #define XMD_H /* This is to prevent the Xmd.h inclusion bug :-/ */
46 #ifdef HAVE_GL_GLEXT_H
47 # include <GL/glext.h>
55 /* Redefines the constants */
56 #define CALLBACK __stdcall
57 #define WINAPI __stdcall
58 #define APIENTRY WINAPI
61 static void dump_PIXELFORMATDESCRIPTOR(PIXELFORMATDESCRIPTOR *ppfd) {
62 DPRINTF(" - size / version : %d / %d\n", ppfd->nSize, ppfd->nVersion);
63 DPRINTF(" - dwFlags : ");
64 #define TEST_AND_DUMP(t,tv) if ((t) & (tv)) DPRINTF(#tv " ")
65 TEST_AND_DUMP(ppfd->dwFlags, PFD_DEPTH_DONTCARE);
66 TEST_AND_DUMP(ppfd->dwFlags, PFD_DOUBLEBUFFER);
67 TEST_AND_DUMP(ppfd->dwFlags, PFD_DOUBLEBUFFER_DONTCARE);
68 TEST_AND_DUMP(ppfd->dwFlags, PFD_DRAW_TO_WINDOW);
69 TEST_AND_DUMP(ppfd->dwFlags, PFD_DRAW_TO_BITMAP);
70 TEST_AND_DUMP(ppfd->dwFlags, PFD_GENERIC_ACCELERATED);
71 TEST_AND_DUMP(ppfd->dwFlags, PFD_GENERIC_FORMAT);
72 TEST_AND_DUMP(ppfd->dwFlags, PFD_NEED_PALETTE);
73 TEST_AND_DUMP(ppfd->dwFlags, PFD_NEED_SYSTEM_PALETTE);
74 TEST_AND_DUMP(ppfd->dwFlags, PFD_STEREO);
75 TEST_AND_DUMP(ppfd->dwFlags, PFD_STEREO_DONTCARE);
76 TEST_AND_DUMP(ppfd->dwFlags, PFD_SUPPORT_GDI);
77 TEST_AND_DUMP(ppfd->dwFlags, PFD_SUPPORT_OPENGL);
78 TEST_AND_DUMP(ppfd->dwFlags, PFD_SWAP_COPY);
79 TEST_AND_DUMP(ppfd->dwFlags, PFD_SWAP_EXCHANGE);
80 TEST_AND_DUMP(ppfd->dwFlags, PFD_SWAP_LAYER_BUFFERS);
84 DPRINTF(" - iPixelType : ");
85 switch (ppfd->iPixelType) {
86 case PFD_TYPE_RGBA: DPRINTF("PFD_TYPE_RGBA"); break;
87 case PFD_TYPE_COLORINDEX: DPRINTF("PFD_TYPE_COLORINDEX"); break;
91 DPRINTF(" - Color : %d\n", ppfd->cColorBits);
92 DPRINTF(" - Alpha : %d\n", ppfd->cAlphaBits);
93 DPRINTF(" - Accum : %d\n", ppfd->cAccumBits);
94 DPRINTF(" - Depth : %d\n", ppfd->cDepthBits);
95 DPRINTF(" - Stencil : %d\n", ppfd->cStencilBits);
96 DPRINTF(" - Aux : %d\n", ppfd->cAuxBuffers);
98 DPRINTF(" - iLayerType : ");
99 switch (ppfd->iLayerType) {
100 case PFD_MAIN_PLANE: DPRINTF("PFD_MAIN_PLANE"); break;
101 case PFD_OVERLAY_PLANE: DPRINTF("PFD_OVERLAY_PLANE"); break;
102 case PFD_UNDERLAY_PLANE: DPRINTF("PFD_UNDERLAY_PLANE"); break;
107 /* No need to load any other libraries as according to the ABI, libGL should be self-sufficient and
108 include all dependencies
111 #define SONAME_LIBGL "libGL.so"
114 static void *opengl_handle;
116 #define MAKE_FUNCPTR(f) static typeof(f) * p##f;
117 MAKE_FUNCPTR(glXChooseVisual)
118 MAKE_FUNCPTR(glXGetConfig)
119 MAKE_FUNCPTR(glXSwapBuffers)
120 MAKE_FUNCPTR(glXQueryExtension)
123 void X11DRV_OpenGL_Init(Display *display) {
124 int error_base, event_base;
126 opengl_handle = wine_dlopen(SONAME_LIBGL, RTLD_NOW|RTLD_GLOBAL, NULL, 0);
127 if (opengl_handle == NULL) return;
129 #define LOAD_FUNCPTR(f) if((p##f = wine_dlsym(opengl_handle, #f, NULL, 0)) == NULL) goto sym_not_found;
130 LOAD_FUNCPTR(glXChooseVisual)
131 LOAD_FUNCPTR(glXGetConfig)
132 LOAD_FUNCPTR(glXSwapBuffers)
133 LOAD_FUNCPTR(glXQueryExtension)
137 if (pglXQueryExtension(display, &event_base, &error_base) == True) {
138 TRACE("GLX is up and running error_base = %d\n", error_base);
140 wine_dlclose(opengl_handle, NULL, 0);
141 opengl_handle = NULL;
147 wine_dlclose(opengl_handle, NULL, 0);
148 opengl_handle = NULL;
151 /* X11DRV_ChoosePixelFormat
153 Equivalent of glXChooseVisual
155 int X11DRV_ChoosePixelFormat(X11DRV_PDEVICE *physDev,
156 const PIXELFORMATDESCRIPTOR *ppfd) {
157 #define TEST_AND_ADD1(t,a) if (t) att_list[att_pos++] = a
158 #define TEST_AND_ADD2(t,a,b) if (t) { att_list[att_pos++] = a; att_list[att_pos++] = b; }
159 #define NULL_TEST_AND_ADD2(tv,a,b) att_list[att_pos++] = a; att_list[att_pos++] = ((tv) == 0 ? 0 : b)
160 #define ADD2(a,b) att_list[att_pos++] = a; att_list[att_pos++] = b
167 if (opengl_handle == NULL) {
168 ERR("No libGL on this box - disabling OpenGL support !\n");
172 if (TRACE_ON(opengl)) {
173 TRACE("(%p,%p)\n", physDev, ppfd);
175 dump_PIXELFORMATDESCRIPTOR((PIXELFORMATDESCRIPTOR *) ppfd);
178 if (ppfd->dwFlags & PFD_DRAW_TO_BITMAP) {
179 ERR("Flag not supported !\n");
180 /* Should SetError here... */
184 /* Now, build the request to GLX */
185 TEST_AND_ADD1(ppfd->dwFlags & PFD_DOUBLEBUFFER, GLX_DOUBLEBUFFER);
186 TEST_AND_ADD1(ppfd->dwFlags & PFD_STEREO, GLX_STEREO);
187 TEST_AND_ADD1(ppfd->iPixelType == PFD_TYPE_RGBA, GLX_RGBA);
188 TEST_AND_ADD2(ppfd->iPixelType == PFD_TYPE_COLORINDEX, GLX_BUFFER_SIZE, ppfd->cColorBits);
190 NULL_TEST_AND_ADD2(ppfd->cDepthBits, GLX_DEPTH_SIZE, 8);
191 /* These flags are not supported yet...
193 NULL_TEST_AND_ADD2(ppfd->cAlphaBits, GLX_ALPHA_SIZE, 8);
194 ADD2(GLX_ACCUM_SIZE, ppfd->cAccumBits); */
195 ADD2(GLX_STENCIL_SIZE, ppfd->cStencilBits); /* now supported */
196 /* ADD2(GLX_AUX_BUFFERS, ppfd->cAuxBuffers); */
197 att_list[att_pos] = None;
201 This command cannot be used as we need to use the default visual...
202 Let's hope it at least contains some OpenGL functionnalities
204 vis = glXChooseVisual(gdi_display, DefaultScreen(gdi_display), att_list);
207 XVisualInfo template;
209 template.visualid = XVisualIDFromVisual(visual);
210 vis = XGetVisualInfo(gdi_display, VisualIDMask, &template, &num);
212 TRACE("Found visual : %p - returns %d\n", vis, physDev->used_visuals + 1);
217 ERR("No visual found !\n");
218 /* Should SetError here... */
221 /* try to find the visualid in the already created visuals */
222 for( i=0; i<physDev->used_visuals; i++ ) {
223 if ( vis->visualid == physDev->visuals[i]->visualid ) {
228 /* now give up, if the maximum is reached */
229 if (physDev->used_visuals == MAX_PIXELFORMATS) {
230 ERR("Maximum number of visuals reached !\n");
231 /* Should SetError here... */
234 physDev->visuals[physDev->used_visuals++] = vis;
236 return physDev->used_visuals;
239 /* X11DRV_DescribePixelFormat
241 Get the pixel-format descriptor associated to the given id
243 int X11DRV_DescribePixelFormat(X11DRV_PDEVICE *physDev,
246 PIXELFORMATDESCRIPTOR *ppfd) {
251 if (opengl_handle == NULL) {
252 ERR("No libGL on this box - disabling OpenGL support !\n");
256 TRACE("(%p,%d,%d,%p)\n", physDev, iPixelFormat, nBytes, ppfd);
259 /* The application is only querying the number of visuals */
260 return MAX_PIXELFORMATS;
263 if (nBytes < sizeof(PIXELFORMATDESCRIPTOR)) {
264 ERR("Wrong structure size !\n");
265 /* Should set error */
268 if ((iPixelFormat > MAX_PIXELFORMATS) ||
269 (iPixelFormat > physDev->used_visuals + 1) ||
270 (iPixelFormat <= 0)) {
271 ERR("Wrong pixel format !\n");
272 /* Should set error */
276 if (iPixelFormat == physDev->used_visuals + 1) {
277 int dblBuf[]={GLX_RGBA,GLX_DEPTH_SIZE,16,GLX_DOUBLEBUFFER,None};
279 /* Create a 'standard' X Visual */
281 vis = pglXChooseVisual(gdi_display, DefaultScreen(gdi_display), dblBuf);
284 WARN("Uninitialized Visual. Creating standard (%p) !\n", vis);
287 ERR("Could not create standard visual !\n");
288 /* Should set error */
292 physDev->visuals[physDev->used_visuals++] = vis;
294 vis = physDev->visuals[iPixelFormat - 1];
296 memset(ppfd, 0, sizeof(PIXELFORMATDESCRIPTOR));
297 ppfd->nSize = sizeof(PIXELFORMATDESCRIPTOR);
300 /* These flags are always the same... */
301 ppfd->dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_GENERIC_ACCELERATED;
302 /* Now the flags extraced from the Visual */
304 pglXGetConfig(gdi_display, vis, GLX_DOUBLEBUFFER, &value); if (value) ppfd->dwFlags |= PFD_DOUBLEBUFFER;
305 pglXGetConfig(gdi_display, vis, GLX_STEREO, &value); if (value) ppfd->dwFlags |= PFD_STEREO;
308 pglXGetConfig(gdi_display, vis, GLX_RGBA, &value);
310 ppfd->iPixelType = PFD_TYPE_RGBA;
312 ppfd->iPixelType = PFD_TYPE_COLORINDEX;
315 pglXGetConfig(gdi_display, vis, GLX_BUFFER_SIZE, &value);
316 ppfd->cColorBits = value;
318 /* Red, green, blue and alpha bits / shifts */
319 if (ppfd->iPixelType == PFD_TYPE_RGBA) {
320 pglXGetConfig(gdi_display, vis, GLX_RED_SIZE, &rb);
321 pglXGetConfig(gdi_display, vis, GLX_GREEN_SIZE, &gb);
322 pglXGetConfig(gdi_display, vis, GLX_BLUE_SIZE, &bb);
323 pglXGetConfig(gdi_display, vis, GLX_ALPHA_SIZE, &ab);
326 ppfd->cRedShift = gb + bb + ab;
327 ppfd->cBlueBits = bb;
328 ppfd->cBlueShift = ab;
329 ppfd->cGreenBits = gb;
330 ppfd->cGreenShift = bb + ab;
331 ppfd->cAlphaBits = ab;
332 ppfd->cAlphaShift = 0;
337 ppfd->cBlueShift = 0;
338 ppfd->cGreenBits = 0;
339 ppfd->cGreenShift = 0;
340 ppfd->cAlphaBits = 0;
341 ppfd->cAlphaShift = 0;
343 /* Accums : to do ... */
346 pglXGetConfig(gdi_display, vis, GLX_DEPTH_SIZE, &value);
347 ppfd->cDepthBits = value;
350 pglXGetConfig( gdi_display, vis, GLX_STENCIL_SIZE, &value );
351 ppfd->cStencilBits = value;
355 /* Aux : to do ... */
357 ppfd->iLayerType = PFD_MAIN_PLANE;
359 if (TRACE_ON(opengl)) {
360 dump_PIXELFORMATDESCRIPTOR(ppfd);
363 return MAX_PIXELFORMATS;
366 /* X11DRV_GetPixelFormat
368 Get the pixel-format id used by this DC
370 int X11DRV_GetPixelFormat(X11DRV_PDEVICE *physDev) {
371 TRACE("(%p): returns %d\n", physDev, physDev->current_pf);
373 return physDev->current_pf;
376 /* X11DRV_SetPixelFormat
378 Set the pixel-format id used by this DC
380 BOOL X11DRV_SetPixelFormat(X11DRV_PDEVICE *physDev,
382 const PIXELFORMATDESCRIPTOR *ppfd) {
383 TRACE("(%p,%d,%p)\n", physDev, iPixelFormat, ppfd);
385 physDev->current_pf = iPixelFormat;
390 /* X11DRV_SwapBuffers
392 Swap the buffers of this DC
394 BOOL X11DRV_SwapBuffers(X11DRV_PDEVICE *physDev) {
395 if (opengl_handle == NULL) {
396 ERR("No libGL on this box - disabling OpenGL support !\n");
400 TRACE("(%p)\n", physDev);
403 pglXSwapBuffers(gdi_display, physDev->drawable);
409 /***********************************************************************
410 * X11DRV_setup_opengl_visual
412 * Setup the default visual used for OpenGL and Direct3D, and the desktop
413 * window (if it exists). If OpenGL isn't available, the visual is simply
414 * set to the default visual for the display
416 XVisualInfo *X11DRV_setup_opengl_visual( Display *display )
418 XVisualInfo *visual = NULL;
419 int dblBuf[]={GLX_RGBA,GLX_DEPTH_SIZE,16,GLX_DOUBLEBUFFER,None};
421 if (opengl_handle == NULL) return NULL;
423 /* In order to support OpenGL or D3D, we require a double-buffered visual */
425 visual = pglXChooseVisual(display, DefaultScreen(display), dblBuf);
430 #else /* no OpenGL includes */
432 void X11DRV_OpenGL_Init(Display *display)
436 /***********************************************************************
437 * ChoosePixelFormat (X11DRV.@)
439 int X11DRV_ChoosePixelFormat(X11DRV_PDEVICE *physDev,
440 const PIXELFORMATDESCRIPTOR *ppfd) {
441 ERR("No OpenGL support compiled in.\n");
446 /***********************************************************************
447 * DescribePixelFormat (X11DRV.@)
449 int X11DRV_DescribePixelFormat(X11DRV_PDEVICE *physDev,
452 PIXELFORMATDESCRIPTOR *ppfd) {
453 ERR("No OpenGL support compiled in.\n");
458 /***********************************************************************
459 * GetPixelFormat (X11DRV.@)
461 int X11DRV_GetPixelFormat(X11DRV_PDEVICE *physDev) {
462 ERR("No OpenGL support compiled in.\n");
467 /***********************************************************************
468 * SetPixelFormat (X11DRV.@)
470 BOOL X11DRV_SetPixelFormat(X11DRV_PDEVICE *physDev,
472 const PIXELFORMATDESCRIPTOR *ppfd) {
473 ERR("No OpenGL support compiled in.\n");
478 /***********************************************************************
479 * SwapBuffers (X11DRV.@)
481 BOOL X11DRV_SwapBuffers(X11DRV_PDEVICE *physDev) {
482 ERR("No OpenGL support compiled in.\n");
487 XVisualInfo *X11DRV_setup_opengl_visual( Display *display )
492 #endif /* defined(HAVE_OPENGL) */