1 /* Window-specific OpenGL functions implementation.
3 * Copyright (c) 1999 Lionel Ulmer
4 * Copyright (c) 2005 Raphael Junqueira
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #include "wine/port.h"
36 #include "opengl_ext.h"
42 #include "wine/library.h"
43 #include "wine/debug.h"
45 WINE_DEFAULT_DEBUG_CHANNEL(wgl);
46 WINE_DECLARE_DEBUG_CHANNEL(opengl);
50 PROC (WINAPI *p_wglGetProcAddress)(LPCSTR lpszProc);
51 BOOL (WINAPI *p_SetPixelFormat)(HDC hdc, INT iPixelFormat, const PIXELFORMATDESCRIPTOR *ppfd);
52 BOOL (WINAPI *p_wglCopyContext)(HGLRC hglrcSrc, HGLRC hglrcDst, UINT mask);
53 BOOL (WINAPI *p_wglDeleteContext)(HGLRC hglrc);
54 BOOL (WINAPI *p_wglMakeCurrent)(HDC hdc, HGLRC hglrc);
55 BOOL (WINAPI *p_wglShareLists)(HGLRC hglrc1, HGLRC hglrc2);
56 BOOL (WINAPI *p_wglUseFontBitmapsA)(HDC hdc, DWORD first, DWORD count, DWORD listBase);
57 BOOL (WINAPI *p_wglUseFontBitmapsW)(HDC hdc, DWORD first, DWORD count, DWORD listBase);
58 HDC (WINAPI *p_wglGetCurrentDC)(void);
59 HGLRC (WINAPI *p_wglCreateContext)(HDC hdc);
60 HGLRC (WINAPI *p_wglGetCurrentContext)(void);
61 INT (WINAPI *p_ChoosePixelFormat)(HDC hdc, const PIXELFORMATDESCRIPTOR* ppfd);
62 INT (WINAPI *p_DescribePixelFormat)(HDC hdc, INT iPixelFormat, UINT nBytes, LPPIXELFORMATDESCRIPTOR ppfd);
63 INT (WINAPI *p_GetPixelFormat)(HDC hdc);
65 /* Interal WGL function */
66 void (WINAPI *p_wglGetIntegerv)(GLenum pname, GLint* params);
67 void (WINAPI *p_wglFinish)(void);
68 void (WINAPI *p_wglFlush)(void);
72 #define MAKE_FUNCPTR(f) static typeof(f) * p##f;
73 MAKE_FUNCPTR(gluNewTess)
74 MAKE_FUNCPTR(gluDeleteTess)
75 MAKE_FUNCPTR(gluTessBeginContour)
76 MAKE_FUNCPTR(gluTessBeginPolygon)
77 MAKE_FUNCPTR(gluTessCallback)
78 MAKE_FUNCPTR(gluTessEndContour)
79 MAKE_FUNCPTR(gluTessEndPolygon)
80 MAKE_FUNCPTR(gluTessVertex)
82 #endif /* SONAME_LIBGLU */
84 void (*wine_tsx11_lock_ptr)(void) = NULL;
85 void (*wine_tsx11_unlock_ptr)(void) = NULL;
87 static HMODULE opengl32_handle;
88 static void* libglu_handle = NULL;
90 static char* internal_gl_disabled_extensions = NULL;
91 static char* internal_gl_extensions = NULL;
93 const GLubyte * WINAPI wine_glGetString( GLenum name );
95 /***********************************************************************
96 * wglSetPixelFormat(OPENGL32.@)
98 BOOL WINAPI wglSetPixelFormat( HDC hdc, INT iPixelFormat,
99 const PIXELFORMATDESCRIPTOR *ppfd)
101 return wine_wgl.p_SetPixelFormat(hdc, iPixelFormat, ppfd);
104 /***********************************************************************
105 * wglCopyContext (OPENGL32.@)
107 BOOL WINAPI wglCopyContext(HGLRC hglrcSrc, HGLRC hglrcDst, UINT mask)
109 return wine_wgl.p_wglCopyContext(hglrcSrc, hglrcDst, mask);
112 /***********************************************************************
113 * wglDeleteContext (OPENGL32.@)
115 BOOL WINAPI wglDeleteContext(HGLRC hglrc)
117 return wine_wgl.p_wglDeleteContext(hglrc);
120 /***********************************************************************
121 * wglMakeCurrent (OPENGL32.@)
123 BOOL WINAPI wglMakeCurrent(HDC hdc, HGLRC hglrc)
125 return wine_wgl.p_wglMakeCurrent(hdc, hglrc);
128 /***********************************************************************
129 * wglShareLists (OPENGL32.@)
131 BOOL WINAPI wglShareLists(HGLRC hglrc1, HGLRC hglrc2)
133 return wine_wgl.p_wglShareLists(hglrc1, hglrc2);
136 /***********************************************************************
137 * wglUseFontBitmapsA (OPENGL32.@)
139 BOOL WINAPI wglUseFontBitmapsA(HDC hdc, DWORD first, DWORD count, DWORD listBase)
141 return wine_wgl.p_wglUseFontBitmapsA(hdc, first, count, listBase);
144 /***********************************************************************
145 * wglUseFontBitmapsW (OPENGL32.@)
147 BOOL WINAPI wglUseFontBitmapsW(HDC hdc, DWORD first, DWORD count, DWORD listBase)
149 return wine_wgl.p_wglUseFontBitmapsW(hdc, first, count, listBase);
152 /***********************************************************************
153 * wglGetCurrentDC (OPENGL32.@)
155 HDC WINAPI wglGetCurrentDC(void)
157 return wine_wgl.p_wglGetCurrentDC();
160 /***********************************************************************
161 * wglCreateContext (OPENGL32.@)
163 HGLRC WINAPI wglCreateContext(HDC hdc)
165 return wine_wgl.p_wglCreateContext(hdc);
168 /***********************************************************************
169 * wglGetCurrentContext (OPENGL32.@)
171 HGLRC WINAPI wglGetCurrentContext(void)
173 return wine_wgl.p_wglGetCurrentContext();
176 /***********************************************************************
177 * wglChoosePixelFormat (OPENGL32.@)
179 INT WINAPI wglChoosePixelFormat(HDC hdc, const PIXELFORMATDESCRIPTOR* ppfd)
181 return wine_wgl.p_ChoosePixelFormat(hdc, ppfd);
184 /***********************************************************************
185 * wglDescribePixelFormat (OPENGL32.@)
187 INT WINAPI wglDescribePixelFormat(HDC hdc, INT iPixelFormat, UINT nBytes,
188 LPPIXELFORMATDESCRIPTOR ppfd)
190 return wine_wgl.p_DescribePixelFormat(hdc, iPixelFormat, nBytes, ppfd);
192 /***********************************************************************
193 * wglGetPixelFormat (OPENGL32.@)
195 INT WINAPI wglGetPixelFormat(HDC hdc)
197 return wine_wgl.p_GetPixelFormat(hdc);
200 /***********************************************************************
201 * wglCreateLayerContext (OPENGL32.@)
203 HGLRC WINAPI wglCreateLayerContext(HDC hdc,
205 TRACE("(%p,%d)\n", hdc, iLayerPlane);
207 if (iLayerPlane == 0) {
208 return wglCreateContext(hdc);
210 FIXME(" no handler for layer %d\n", iLayerPlane);
215 /***********************************************************************
216 * wglDescribeLayerPlane (OPENGL32.@)
218 BOOL WINAPI wglDescribeLayerPlane(HDC hdc,
222 LPLAYERPLANEDESCRIPTOR plpd) {
223 FIXME("(%p,%d,%d,%d,%p)\n", hdc, iPixelFormat, iLayerPlane, nBytes, plpd);
228 /***********************************************************************
229 * wglGetLayerPaletteEntries (OPENGL32.@)
231 int WINAPI wglGetLayerPaletteEntries(HDC hdc,
235 const COLORREF *pcr) {
236 FIXME("(): stub !\n");
241 static int compar(const void *elt_a, const void *elt_b) {
242 return strcmp(((const OpenGL_extension *) elt_a)->name,
243 ((const OpenGL_extension *) elt_b)->name);
246 /* Check if a GL extension is supported */
247 static BOOL is_extension_supported(const char* extension)
249 const char *gl_ext_string = (const char*)wine_glGetString(GL_EXTENSIONS);
251 TRACE("Checking for extension '%s'\n", extension);
254 ERR("No OpenGL extensions found, check if your OpenGL setup is correct!\n");
258 /* We use the GetProcAddress function from the display driver to retrieve function pointers
259 * for OpenGL and WGL extensions. In case of winex11.drv the OpenGL extension lookup is done
260 * using glXGetProcAddress. This function is quite unreliable in the sense that its specs don't
261 * require the function to return NULL when a extension isn't found. For this reason we check
262 * if the OpenGL extension required for the function we are looking up is supported. */
264 /* Check if the extension is part of the GL extension string to see if it is supported. */
265 if(strstr(gl_ext_string, extension) != NULL)
268 /* In general an OpenGL function starts as an ARB/EXT extension and at some stage
269 * it becomes part of the core OpenGL library and can be reached without the ARB/EXT
270 * suffix as well. In the extension table, these functions contain GL_VERSION_major_minor.
271 * Check if we are searching for a core GL function */
272 if(strncmp(extension, "GL_VERSION_", 11) == 0)
274 const GLubyte *gl_version = glGetString(GL_VERSION);
275 const char *version = extension + 11; /* Move past 'GL_VERSION_' */
278 ERR("Error no OpenGL version found,\n");
282 /* Compare the major/minor version numbers of the native OpenGL library and what is required by the function.
283 * The gl_version string is guaranteed to have at least a major/minor and sometimes it has a release number as well. */
284 if( (gl_version[0] >= version[0]) || ((gl_version[0] == version[0]) && (gl_version[2] >= version[2])) ) {
287 WARN("The function requires OpenGL version '%c.%c' while your drivers only provide '%c.%c'\n", version[0], version[2], gl_version[0], gl_version[2]);
293 /***********************************************************************
294 * wglGetProcAddress (OPENGL32.@)
296 PROC WINAPI wglGetProcAddress(LPCSTR lpszProc) {
298 OpenGL_extension ext;
299 const OpenGL_extension *ext_ret;
301 TRACE("(%s)\n", lpszProc);
306 /* First, look if it's not already defined in the 'standard' OpenGL functions */
307 if ((local_func = GetProcAddress(opengl32_handle, lpszProc)) != NULL) {
308 TRACE(" found function in 'standard' OpenGL functions (%p)\n", local_func);
312 /* After that, search in the thunks to find the real name of the extension */
314 ext_ret = bsearch(&ext, extension_registry, extension_registry_size,
315 sizeof(OpenGL_extension), compar);
317 /* If nothing was found, we are looking for a WGL extension or an unknown GL extension. */
318 if (ext_ret == NULL) {
319 /* If the function name starts with a w it is a WGL extension */
320 if(lpszProc[0] == 'w')
321 return wine_wgl.p_wglGetProcAddress(lpszProc);
323 /* We are dealing with an unknown GL extension. */
324 WARN("Extension '%s' not defined in opengl32.dll's function table!\n", lpszProc);
326 } else { /* We are looking for an OpenGL extension */
328 /* Check if the GL extension required by the function is available */
329 if(!is_extension_supported(ext_ret->extension)) {
330 WARN("Extension '%s' required by function '%s' not supported!\n", ext_ret->extension, lpszProc);
333 local_func = wine_wgl.p_wglGetProcAddress(ext_ret->name);
335 /* After that, look at the extensions defined in the Linux OpenGL library */
336 if (local_func == NULL) {
340 /* Remove the 3 last letters (EXT, ARB, ...).
342 I know that some extensions have more than 3 letters (MESA, NV,
343 INTEL, ...), but this is only a stop-gap measure to fix buggy
344 OpenGL drivers (moreover, it is only useful for old 1.0 apps
345 that query the glBindTextureEXT extension).
347 memcpy(buf, ext_ret->name, strlen(ext_ret->name) - 3);
348 buf[strlen(ext_ret->name) - 3] = '\0';
349 TRACE(" extension not found in the Linux OpenGL library, checking against libGL bug with %s..\n", buf);
351 ret = GetProcAddress(opengl32_handle, buf);
353 TRACE(" found function in main OpenGL library (%p) !\n", ret);
355 WARN("Did not find function %s (%s) in your OpenGL library !\n", lpszProc, ext_ret->name);
360 TRACE(" returning function (%p)\n", ext_ret->func);
361 extension_funcs[ext_ret - extension_registry] = local_func;
363 return ext_ret->func;
368 /***********************************************************************
369 * wglRealizeLayerPalette (OPENGL32.@)
371 BOOL WINAPI wglRealizeLayerPalette(HDC hdc,
379 /***********************************************************************
380 * wglSetLayerPaletteEntries (OPENGL32.@)
382 int WINAPI wglSetLayerPaletteEntries(HDC hdc,
386 const COLORREF *pcr) {
387 FIXME("(): stub !\n");
392 /***********************************************************************
393 * wglSwapLayerBuffers (OPENGL32.@)
395 BOOL WINAPI wglSwapLayerBuffers(HDC hdc,
397 TRACE_(opengl)("(%p, %08x)\n", hdc, fuPlanes);
399 if (fuPlanes & WGL_SWAP_MAIN_PLANE) {
400 if (!SwapBuffers(hdc)) return FALSE;
401 fuPlanes &= ~WGL_SWAP_MAIN_PLANE;
405 WARN("Following layers unhandled : %08x\n", fuPlanes);
413 static void *load_libglu(void)
415 static int already_loaded;
418 if (already_loaded) return libglu_handle;
421 TRACE("Trying to load GLU library: %s\n", SONAME_LIBGLU);
422 handle = wine_dlopen(SONAME_LIBGLU, RTLD_NOW, NULL, 0);
425 WARN("Failed to load %s\n", SONAME_LIBGLU);
429 #define LOAD_FUNCPTR(f) if((p##f = wine_dlsym(handle, #f, NULL, 0)) == NULL) goto sym_not_found;
430 LOAD_FUNCPTR(gluNewTess)
431 LOAD_FUNCPTR(gluDeleteTess)
432 LOAD_FUNCPTR(gluTessBeginContour)
433 LOAD_FUNCPTR(gluTessBeginPolygon)
434 LOAD_FUNCPTR(gluTessCallback)
435 LOAD_FUNCPTR(gluTessEndContour)
436 LOAD_FUNCPTR(gluTessEndPolygon)
437 LOAD_FUNCPTR(gluTessVertex)
439 libglu_handle = handle;
443 WARN("Unable to load function ptrs from libGLU\n");
444 /* Close the library as we won't use it */
445 wine_dlclose(handle, NULL, 0);
449 static void fixed_to_double(POINTFX fixed, UINT em_size, GLdouble vertex[3])
451 vertex[0] = (fixed.x.value + (GLdouble)fixed.x.fract / (1 << 16)) / em_size;
452 vertex[1] = (fixed.y.value + (GLdouble)fixed.y.fract / (1 << 16)) / em_size;
456 static void tess_callback_vertex(GLvoid *vertex)
458 GLdouble *dbl = vertex;
459 TRACE("%f, %f, %f\n", dbl[0], dbl[1], dbl[2]);
463 static void tess_callback_begin(GLenum which)
465 TRACE("%d\n", which);
469 static void tess_callback_end(void)
475 /***********************************************************************
476 * wglUseFontOutlines_common
478 static BOOL wglUseFontOutlines_common(HDC hdc,
485 LPGLYPHMETRICSFLOAT lpgmf,
489 const MAT2 identity = {{0,1},{0,0},{0,0},{0,1}};
492 HFONT old_font, unscaled_font;
496 TRACE("(%p, %d, %d, %d, %f, %f, %d, %p, %s)\n", hdc, first, count,
497 listBase, deviation, extrusion, format, lpgmf, unicode ? "W" : "A");
501 ERR("libGLU is required for this function but isn't loaded\n");
506 tess = pgluNewTess();
509 pgluTessCallback(tess, GLU_TESS_VERTEX, (_GLUfuncptr)tess_callback_vertex);
510 pgluTessCallback(tess, GLU_TESS_BEGIN, (_GLUfuncptr)tess_callback_begin);
511 pgluTessCallback(tess, GLU_TESS_END, tess_callback_end);
515 if(!tess) return FALSE;
517 GetObjectW(GetCurrentObject(hdc, OBJ_FONT), sizeof(lf), &lf);
518 rc.left = rc.right = rc.bottom = 0;
520 DPtoLP(hdc, (POINT*)&rc, 2);
521 lf.lfHeight = -abs(rc.top - rc.bottom);
522 lf.lfOrientation = lf.lfEscapement = 0;
523 unscaled_font = CreateFontIndirectW(&lf);
524 old_font = SelectObject(hdc, unscaled_font);
526 for (glyph = first; glyph < first + count; glyph++)
531 TTPOLYGONHEADER *pph;
536 needed = GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
538 needed = GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
540 if(needed == GDI_ERROR)
543 buf = HeapAlloc(GetProcessHeap(), 0, needed);
544 vertices = HeapAlloc(GetProcessHeap(), 0, needed / sizeof(POINTFX) * 3 * sizeof(GLdouble));
547 GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
549 GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
551 TRACE("glyph %d\n", glyph);
555 lpgmf->gmfBlackBoxX = (float)gm.gmBlackBoxX / em_size;
556 lpgmf->gmfBlackBoxY = (float)gm.gmBlackBoxY / em_size;
557 lpgmf->gmfptGlyphOrigin.x = (float)gm.gmptGlyphOrigin.x / em_size;
558 lpgmf->gmfptGlyphOrigin.y = (float)gm.gmptGlyphOrigin.y / em_size;
559 lpgmf->gmfCellIncX = (float)gm.gmCellIncX / em_size;
560 lpgmf->gmfCellIncY = (float)gm.gmCellIncY / em_size;
562 TRACE("%fx%f at %f,%f inc %f,%f\n", lpgmf->gmfBlackBoxX, lpgmf->gmfBlackBoxY,
563 lpgmf->gmfptGlyphOrigin.x, lpgmf->gmfptGlyphOrigin.y, lpgmf->gmfCellIncX, lpgmf->gmfCellIncY);
568 glNewList(listBase++, GL_COMPILE);
569 pgluTessBeginPolygon(tess, NULL);
571 pph = (TTPOLYGONHEADER*)buf;
572 while((BYTE*)pph < buf + needed)
574 TRACE("\tstart %d, %d\n", pph->pfxStart.x.value, pph->pfxStart.y.value);
576 pgluTessBeginContour(tess);
578 fixed_to_double(pph->pfxStart, em_size, vertices);
579 pgluTessVertex(tess, vertices, vertices);
582 ppc = (TTPOLYCURVE*)((char*)pph + sizeof(*pph));
583 while((char*)ppc < (char*)pph + pph->cb)
589 for(i = 0; i < ppc->cpfx; i++)
591 TRACE("\t\tline to %d, %d\n", ppc->apfx[i].x.value, ppc->apfx[i].y.value);
592 fixed_to_double(ppc->apfx[i], em_size, vertices);
593 pgluTessVertex(tess, vertices, vertices);
598 case TT_PRIM_QSPLINE:
599 for(i = 0; i < ppc->cpfx/2; i++)
601 /* FIXME just connecting the control points for now */
602 TRACE("\t\tcurve %d,%d %d,%d\n",
603 ppc->apfx[i * 2].x.value, ppc->apfx[i * 3].y.value,
604 ppc->apfx[i * 2 + 1].x.value, ppc->apfx[i * 3 + 1].y.value);
605 fixed_to_double(ppc->apfx[i * 2], em_size, vertices);
606 pgluTessVertex(tess, vertices, vertices);
608 fixed_to_double(ppc->apfx[i * 2 + 1], em_size, vertices);
609 pgluTessVertex(tess, vertices, vertices);
614 ERR("\t\tcurve type = %d\n", ppc->wType);
615 pgluTessEndContour(tess);
619 ppc = (TTPOLYCURVE*)((char*)ppc + sizeof(*ppc) +
620 (ppc->cpfx - 1) * sizeof(POINTFX));
622 pgluTessEndContour(tess);
623 pph = (TTPOLYGONHEADER*)((char*)pph + pph->cb);
627 pgluTessEndPolygon(tess);
628 glTranslated((GLdouble)gm.gmCellIncX / em_size, (GLdouble)gm.gmCellIncY / em_size, 0.0);
631 HeapFree(GetProcessHeap(), 0, buf);
632 HeapFree(GetProcessHeap(), 0, vertices);
636 DeleteObject(SelectObject(hdc, old_font));
637 pgluDeleteTess(tess);
642 #else /* SONAME_LIBGLU */
644 static BOOL wglUseFontOutlines_common(HDC hdc,
651 LPGLYPHMETRICSFLOAT lpgmf,
654 FIXME("Unable to compile in wglUseFontOutlines support without GL/glu.h\n");
658 #endif /* SONAME_LIBGLU */
660 /***********************************************************************
661 * wglUseFontOutlinesA (OPENGL32.@)
663 BOOL WINAPI wglUseFontOutlinesA(HDC hdc,
670 LPGLYPHMETRICSFLOAT lpgmf)
672 return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, FALSE);
675 /***********************************************************************
676 * wglUseFontOutlinesW (OPENGL32.@)
678 BOOL WINAPI wglUseFontOutlinesW(HDC hdc,
685 LPGLYPHMETRICSFLOAT lpgmf)
687 return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, TRUE);
690 /***********************************************************************
691 * glFinish (OPENGL32.@)
693 void WINAPI wine_glFinish( void )
696 wine_wgl.p_wglFinish();
699 /***********************************************************************
700 * glFlush (OPENGL32.@)
702 void WINAPI wine_glFlush( void )
705 wine_wgl.p_wglFlush();
708 /***********************************************************************
709 * glGetString (OPENGL32.@)
711 const GLubyte * WINAPI wine_glGetString( GLenum name )
714 const char* GL_Extensions = NULL;
716 /* this is for buggy nvidia driver, crashing if called from a different
717 thread with no context */
718 if(wglGetCurrentContext() == NULL)
721 if (GL_EXTENSIONS != name) {
723 ret = glGetString(name);
728 if (NULL == internal_gl_extensions) {
730 GL_Extensions = (const char *) glGetString(GL_EXTENSIONS);
734 size_t len = strlen(GL_Extensions);
735 internal_gl_extensions = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len + 2);
737 TRACE("GL_EXTENSIONS reported:\n");
738 while (*GL_Extensions != 0x00) {
739 const char* Start = GL_Extensions;
742 while (*GL_Extensions != ' ' && *GL_Extensions != 0x00) {
745 memcpy(ThisExtn, Start, (GL_Extensions - Start));
746 ThisExtn[GL_Extensions - Start] = 0;
747 TRACE("- %s:", ThisExtn);
749 /* test if supported API is disabled by config */
750 if (!internal_gl_disabled_extensions || !strstr(internal_gl_disabled_extensions, ThisExtn)) {
751 strcat(internal_gl_extensions, " ");
752 strcat(internal_gl_extensions, ThisExtn);
755 TRACE(" deactived (by config)\n");
758 if (*GL_Extensions == ' ') GL_Extensions++;
763 return (const GLubyte *) internal_gl_extensions;
766 /***********************************************************************
767 * glGetIntegerv (OPENGL32.@)
769 void WINAPI wine_glGetIntegerv( GLenum pname, GLint* params )
771 wine_wgl.p_wglGetIntegerv(pname, params);
774 /***********************************************************************
775 * wglSwapBuffers (OPENGL32.@)
777 BOOL WINAPI DECLSPEC_HOTPATCH wglSwapBuffers( HDC hdc )
779 return SwapBuffers(hdc);
782 /* This is for brain-dead applications that use OpenGL functions before even
783 creating a rendering context.... */
784 static BOOL process_attach(void)
786 HMODULE mod_x11, mod_gdi32;
790 GetDesktopWindow(); /* make sure winex11 is loaded (FIXME) */
791 mod_x11 = GetModuleHandleA( "winex11.drv" );
792 mod_gdi32 = GetModuleHandleA( "gdi32.dll" );
794 if (!mod_x11 || !mod_gdi32)
796 ERR("X11DRV or GDI32 not loaded. Cannot create default context.\n");
800 wine_tsx11_lock_ptr = (void *)GetProcAddress( mod_x11, "wine_tsx11_lock" );
801 wine_tsx11_unlock_ptr = (void *)GetProcAddress( mod_x11, "wine_tsx11_unlock" );
803 wine_wgl.p_wglGetProcAddress = (void *)GetProcAddress(mod_gdi32, "wglGetProcAddress");
804 wine_wgl.p_SetPixelFormat = (void *)GetProcAddress(mod_gdi32, "SetPixelFormat");
805 wine_wgl.p_wglCopyContext = (void *)GetProcAddress(mod_gdi32, "wglCopyContext");
806 wine_wgl.p_wglDeleteContext = (void *)GetProcAddress(mod_gdi32, "wglDeleteContext");
807 wine_wgl.p_wglMakeCurrent = (void *)GetProcAddress(mod_gdi32, "wglMakeCurrent");
808 wine_wgl.p_wglShareLists = (void *)GetProcAddress(mod_gdi32, "wglShareLists");
809 wine_wgl.p_wglUseFontBitmapsA = (void *)GetProcAddress(mod_gdi32, "wglUseFontBitmapsA");
810 wine_wgl.p_wglUseFontBitmapsW = (void *)GetProcAddress(mod_gdi32, "wglUseFontBitmapsW");
811 wine_wgl.p_wglGetCurrentDC = (void *)GetProcAddress(mod_gdi32, "wglGetCurrentDC");
812 wine_wgl.p_wglCreateContext = (void *)GetProcAddress(mod_gdi32, "wglCreateContext");
813 wine_wgl.p_wglGetCurrentContext = (void *)GetProcAddress(mod_gdi32, "wglGetCurrentContext");
814 wine_wgl.p_ChoosePixelFormat = (void *)GetProcAddress(mod_gdi32, "ChoosePixelFormat");
815 wine_wgl.p_DescribePixelFormat = (void *)GetProcAddress(mod_gdi32, "DescribePixelFormat");
816 wine_wgl.p_GetPixelFormat = (void *)GetProcAddress(mod_gdi32, "GetPixelFormat");
818 /* Interal WGL function */
819 wine_wgl.p_wglGetIntegerv = (void *)wine_wgl.p_wglGetProcAddress("wglGetIntegerv");
820 wine_wgl.p_wglFinish = (void *)wine_wgl.p_wglGetProcAddress("wglFinish");
821 wine_wgl.p_wglFlush = (void *)wine_wgl.p_wglGetProcAddress("wglFlush");
823 if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\OpenGL", &hkey)) {
824 if (!RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, NULL, &size)) {
825 internal_gl_disabled_extensions = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
826 RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, (LPBYTE)internal_gl_disabled_extensions, &size);
827 TRACE("found DisabledExtensions=%s\n", debugstr_a(internal_gl_disabled_extensions));
836 /**********************************************************************/
838 static void process_detach(void)
840 if (libglu_handle) wine_dlclose(libglu_handle, NULL, 0);
841 HeapFree(GetProcessHeap(), 0, internal_gl_extensions);
842 HeapFree(GetProcessHeap(), 0, internal_gl_disabled_extensions);
845 /***********************************************************************
846 * OpenGL initialisation routine
848 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
852 case DLL_PROCESS_ATTACH:
853 opengl32_handle = hinst;
854 DisableThreadLibraryCalls(hinst);
855 return process_attach();
856 case DLL_PROCESS_DETACH: