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_wglMakeCurrent)(HDC hdc, HGLRC hglrc);
52 HGLRC (WINAPI *p_wglCreateContext)(HDC hdc);
53 void (WINAPI *p_wglGetIntegerv)(GLenum pname, GLint* params);
54 void (WINAPI *p_wglFinish)(void);
55 void (WINAPI *p_wglFlush)(void);
59 #define MAKE_FUNCPTR(f) static typeof(f) * p##f;
60 MAKE_FUNCPTR(gluNewTess)
61 MAKE_FUNCPTR(gluDeleteTess)
62 MAKE_FUNCPTR(gluTessBeginContour)
63 MAKE_FUNCPTR(gluTessBeginPolygon)
64 MAKE_FUNCPTR(gluTessCallback)
65 MAKE_FUNCPTR(gluTessEndContour)
66 MAKE_FUNCPTR(gluTessEndPolygon)
67 MAKE_FUNCPTR(gluTessVertex)
69 #endif /* SONAME_LIBGLU */
71 /* x11drv GDI escapes */
72 #define X11DRV_ESCAPE 6789
73 enum x11drv_escape_codes
75 X11DRV_GET_DISPLAY, /* get X11 display for a DC */
76 X11DRV_GET_DRAWABLE, /* get current drawable for a DC */
77 X11DRV_GET_FONT, /* get current X font for a DC */
78 X11DRV_SET_DRAWABLE, /* set current drawable for a DC */
79 X11DRV_START_EXPOSURES, /* start graphics exposures */
80 X11DRV_END_EXPOSURES, /* end graphics exposures */
81 X11DRV_GET_DCE, /* get the DCE pointer */
82 X11DRV_SET_DCE, /* set the DCE pointer */
83 X11DRV_GET_GLX_DRAWABLE, /* get current glx drawable for a DC */
84 X11DRV_SYNC_PIXMAP /* sync the dibsection to its pixmap */
87 void (*wine_tsx11_lock_ptr)(void) = NULL;
88 void (*wine_tsx11_unlock_ptr)(void) = NULL;
90 static HMODULE opengl32_handle;
91 static void* libglu_handle = NULL;
93 static char* internal_gl_disabled_extensions = NULL;
94 static char* internal_gl_extensions = NULL;
96 typedef struct wine_glcontext {
99 /* ... more stuff here */
104 Wine_GLContext *curctx = NtCurrentTeb()->glContext;
106 if (curctx && curctx->do_escape)
108 enum x11drv_escape_codes escape = X11DRV_SYNC_PIXMAP;
109 ExtEscape(curctx->hdc, X11DRV_ESCAPE, sizeof(escape), (LPCSTR)&escape, 0, NULL);
112 wine_tsx11_lock_ptr();
116 const GLubyte * WINAPI wine_glGetString( GLenum name );
118 /***********************************************************************
119 * wglMakeCurrent (OPENGL32.@)
121 BOOL WINAPI wglMakeCurrent(HDC hdc, HGLRC hglrc)
123 return wine_wgl.p_wglMakeCurrent(hdc, hglrc);
126 /***********************************************************************
127 * wglCreateContext (OPENGL32.@)
129 HGLRC WINAPI wglCreateContext(HDC hdc)
131 return wine_wgl.p_wglCreateContext(hdc);
134 /***********************************************************************
135 * wglCreateLayerContext (OPENGL32.@)
137 HGLRC WINAPI wglCreateLayerContext(HDC hdc,
139 TRACE("(%p,%d)\n", hdc, iLayerPlane);
141 if (iLayerPlane == 0) {
142 return wglCreateContext(hdc);
144 FIXME(" no handler for layer %d\n", iLayerPlane);
149 /***********************************************************************
150 * wglDescribeLayerPlane (OPENGL32.@)
152 BOOL WINAPI wglDescribeLayerPlane(HDC hdc,
156 LPLAYERPLANEDESCRIPTOR plpd) {
157 FIXME("(%p,%d,%d,%d,%p)\n", hdc, iPixelFormat, iLayerPlane, nBytes, plpd);
162 /***********************************************************************
163 * wglGetLayerPaletteEntries (OPENGL32.@)
165 int WINAPI wglGetLayerPaletteEntries(HDC hdc,
169 const COLORREF *pcr) {
170 FIXME("(): stub !\n");
175 static int compar(const void *elt_a, const void *elt_b) {
176 return strcmp(((const OpenGL_extension *) elt_a)->name,
177 ((const OpenGL_extension *) elt_b)->name);
180 /* Check if a GL extension is supported */
181 static BOOL is_extension_supported(const char* extension)
183 const char *gl_ext_string = (const char*)wine_glGetString(GL_EXTENSIONS);
185 TRACE("Checking for extension '%s'\n", extension);
188 ERR("No OpenGL extensions found, check if your OpenGL setup is correct!\n");
192 /* We use the GetProcAddress function from the display driver to retrieve function pointers
193 * for OpenGL and WGL extensions. In case of winex11.drv the OpenGL extension lookup is done
194 * using glXGetProcAddress. This function is quite unreliable in the sense that its specs don't
195 * require the function to return NULL when a extension isn't found. For this reason we check
196 * if the OpenGL extension required for the function we are looking up is supported. */
198 /* Check if the extension is part of the GL extension string to see if it is supported. */
199 if(strstr(gl_ext_string, extension) != NULL)
202 /* In general an OpenGL function starts as an ARB/EXT extension and at some stage
203 * it becomes part of the core OpenGL library and can be reached without the ARB/EXT
204 * suffix as well. In the extension table, these functions contain GL_VERSION_major_minor.
205 * Check if we are searching for a core GL function */
206 if(strncmp(extension, "GL_VERSION_", 11) == 0)
208 const GLubyte *gl_version = glGetString(GL_VERSION);
209 const char *version = extension + 11; /* Move past 'GL_VERSION_' */
212 ERR("Error no OpenGL version found,\n");
216 /* Compare the major/minor version numbers of the native OpenGL library and what is required by the function.
217 * The gl_version string is guaranteed to have at least a major/minor and sometimes it has a release number as well. */
218 if( (gl_version[0] >= version[0]) || ((gl_version[0] == version[0]) && (gl_version[2] >= version[2])) ) {
221 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]);
227 /***********************************************************************
228 * wglGetProcAddress (OPENGL32.@)
230 PROC WINAPI wglGetProcAddress(LPCSTR lpszProc) {
232 OpenGL_extension ext;
233 const OpenGL_extension *ext_ret;
235 TRACE("(%s)\n", lpszProc);
240 /* First, look if it's not already defined in the 'standard' OpenGL functions */
241 if ((local_func = GetProcAddress(opengl32_handle, lpszProc)) != NULL) {
242 TRACE(" found function in 'standard' OpenGL functions (%p)\n", local_func);
246 /* After that, search in the thunks to find the real name of the extension */
248 ext_ret = bsearch(&ext, extension_registry, extension_registry_size,
249 sizeof(OpenGL_extension), compar);
251 /* If nothing was found, we are looking for a WGL extension or an unknown GL extension. */
252 if (ext_ret == NULL) {
253 /* If the function name starts with a w it is a WGL extension */
254 if(lpszProc[0] == 'w')
255 return wine_wgl.p_wglGetProcAddress(lpszProc);
257 /* We are dealing with an unknown GL extension. */
258 WARN("Extension '%s' not defined in opengl32.dll's function table!\n", lpszProc);
260 } else { /* We are looking for an OpenGL extension */
262 /* Check if the GL extension required by the function is available */
263 if(!is_extension_supported(ext_ret->extension)) {
264 WARN("Extension '%s' required by function '%s' not supported!\n", ext_ret->extension, lpszProc);
267 local_func = wine_wgl.p_wglGetProcAddress(ext_ret->name);
269 /* After that, look at the extensions defined in the Linux OpenGL library */
270 if (local_func == NULL) {
274 /* Remove the 3 last letters (EXT, ARB, ...).
276 I know that some extensions have more than 3 letters (MESA, NV,
277 INTEL, ...), but this is only a stop-gap measure to fix buggy
278 OpenGL drivers (moreover, it is only useful for old 1.0 apps
279 that query the glBindTextureEXT extension).
281 memcpy(buf, ext_ret->name, strlen(ext_ret->name) - 3);
282 buf[strlen(ext_ret->name) - 3] = '\0';
283 TRACE(" extension not found in the Linux OpenGL library, checking against libGL bug with %s..\n", buf);
285 ret = GetProcAddress(opengl32_handle, buf);
287 TRACE(" found function in main OpenGL library (%p) !\n", ret);
289 WARN("Did not find function %s (%s) in your OpenGL library !\n", lpszProc, ext_ret->name);
294 TRACE(" returning function (%p)\n", ext_ret->func);
295 extension_funcs[ext_ret - extension_registry] = local_func;
297 return ext_ret->func;
302 /***********************************************************************
303 * wglRealizeLayerPalette (OPENGL32.@)
305 BOOL WINAPI wglRealizeLayerPalette(HDC hdc,
313 /***********************************************************************
314 * wglSetLayerPaletteEntries (OPENGL32.@)
316 int WINAPI wglSetLayerPaletteEntries(HDC hdc,
320 const COLORREF *pcr) {
321 FIXME("(): stub !\n");
326 /***********************************************************************
327 * wglSwapLayerBuffers (OPENGL32.@)
329 BOOL WINAPI wglSwapLayerBuffers(HDC hdc,
331 TRACE_(opengl)("(%p, %08x)\n", hdc, fuPlanes);
333 if (fuPlanes & WGL_SWAP_MAIN_PLANE) {
334 if (!SwapBuffers(hdc)) return FALSE;
335 fuPlanes &= ~WGL_SWAP_MAIN_PLANE;
339 WARN("Following layers unhandled : %08x\n", fuPlanes);
347 static void *load_libglu(void)
349 static int already_loaded;
352 if (already_loaded) return libglu_handle;
355 TRACE("Trying to load GLU library: %s\n", SONAME_LIBGLU);
356 handle = wine_dlopen(SONAME_LIBGLU, RTLD_NOW, NULL, 0);
359 WARN("Failed to load %s\n", SONAME_LIBGLU);
363 #define LOAD_FUNCPTR(f) if((p##f = wine_dlsym(handle, #f, NULL, 0)) == NULL) goto sym_not_found;
364 LOAD_FUNCPTR(gluNewTess)
365 LOAD_FUNCPTR(gluDeleteTess)
366 LOAD_FUNCPTR(gluTessBeginContour)
367 LOAD_FUNCPTR(gluTessBeginPolygon)
368 LOAD_FUNCPTR(gluTessCallback)
369 LOAD_FUNCPTR(gluTessEndContour)
370 LOAD_FUNCPTR(gluTessEndPolygon)
371 LOAD_FUNCPTR(gluTessVertex)
373 libglu_handle = handle;
377 WARN("Unable to load function ptrs from libGLU\n");
378 /* Close the library as we won't use it */
379 wine_dlclose(handle, NULL, 0);
383 static void fixed_to_double(POINTFX fixed, UINT em_size, GLdouble vertex[3])
385 vertex[0] = (fixed.x.value + (GLdouble)fixed.x.fract / (1 << 16)) / em_size;
386 vertex[1] = (fixed.y.value + (GLdouble)fixed.y.fract / (1 << 16)) / em_size;
390 static void tess_callback_vertex(GLvoid *vertex)
392 GLdouble *dbl = vertex;
393 TRACE("%f, %f, %f\n", dbl[0], dbl[1], dbl[2]);
397 static void tess_callback_begin(GLenum which)
399 TRACE("%d\n", which);
403 static void tess_callback_end(void)
409 /***********************************************************************
410 * wglUseFontOutlines_common
412 static BOOL wglUseFontOutlines_common(HDC hdc,
419 LPGLYPHMETRICSFLOAT lpgmf,
423 const MAT2 identity = {{0,1},{0,0},{0,0},{0,1}};
426 HFONT old_font, unscaled_font;
430 TRACE("(%p, %d, %d, %d, %f, %f, %d, %p, %s)\n", hdc, first, count,
431 listBase, deviation, extrusion, format, lpgmf, unicode ? "W" : "A");
435 ERR("libGLU is required for this function but isn't loaded\n");
440 tess = pgluNewTess();
443 pgluTessCallback(tess, GLU_TESS_VERTEX, (_GLUfuncptr)tess_callback_vertex);
444 pgluTessCallback(tess, GLU_TESS_BEGIN, (_GLUfuncptr)tess_callback_begin);
445 pgluTessCallback(tess, GLU_TESS_END, tess_callback_end);
449 if(!tess) return FALSE;
451 GetObjectW(GetCurrentObject(hdc, OBJ_FONT), sizeof(lf), &lf);
452 rc.left = rc.right = rc.bottom = 0;
454 DPtoLP(hdc, (POINT*)&rc, 2);
455 lf.lfHeight = -abs(rc.top - rc.bottom);
456 lf.lfOrientation = lf.lfEscapement = 0;
457 unscaled_font = CreateFontIndirectW(&lf);
458 old_font = SelectObject(hdc, unscaled_font);
460 for (glyph = first; glyph < first + count; glyph++)
465 TTPOLYGONHEADER *pph;
470 needed = GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
472 needed = GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
474 if(needed == GDI_ERROR)
477 buf = HeapAlloc(GetProcessHeap(), 0, needed);
478 vertices = HeapAlloc(GetProcessHeap(), 0, needed / sizeof(POINTFX) * 3 * sizeof(GLdouble));
481 GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
483 GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
485 TRACE("glyph %d\n", glyph);
489 lpgmf->gmfBlackBoxX = (float)gm.gmBlackBoxX / em_size;
490 lpgmf->gmfBlackBoxY = (float)gm.gmBlackBoxY / em_size;
491 lpgmf->gmfptGlyphOrigin.x = (float)gm.gmptGlyphOrigin.x / em_size;
492 lpgmf->gmfptGlyphOrigin.y = (float)gm.gmptGlyphOrigin.y / em_size;
493 lpgmf->gmfCellIncX = (float)gm.gmCellIncX / em_size;
494 lpgmf->gmfCellIncY = (float)gm.gmCellIncY / em_size;
496 TRACE("%fx%f at %f,%f inc %f,%f\n", lpgmf->gmfBlackBoxX, lpgmf->gmfBlackBoxY,
497 lpgmf->gmfptGlyphOrigin.x, lpgmf->gmfptGlyphOrigin.y, lpgmf->gmfCellIncX, lpgmf->gmfCellIncY);
502 glNewList(listBase++, GL_COMPILE);
503 pgluTessBeginPolygon(tess, NULL);
505 pph = (TTPOLYGONHEADER*)buf;
506 while((BYTE*)pph < buf + needed)
508 TRACE("\tstart %d, %d\n", pph->pfxStart.x.value, pph->pfxStart.y.value);
510 pgluTessBeginContour(tess);
512 fixed_to_double(pph->pfxStart, em_size, vertices);
513 pgluTessVertex(tess, vertices, vertices);
516 ppc = (TTPOLYCURVE*)((char*)pph + sizeof(*pph));
517 while((char*)ppc < (char*)pph + pph->cb)
523 for(i = 0; i < ppc->cpfx; i++)
525 TRACE("\t\tline to %d, %d\n", ppc->apfx[i].x.value, ppc->apfx[i].y.value);
526 fixed_to_double(ppc->apfx[i], em_size, vertices);
527 pgluTessVertex(tess, vertices, vertices);
532 case TT_PRIM_QSPLINE:
533 for(i = 0; i < ppc->cpfx/2; i++)
535 /* FIXME just connecting the control points for now */
536 TRACE("\t\tcurve %d,%d %d,%d\n",
537 ppc->apfx[i * 2].x.value, ppc->apfx[i * 3].y.value,
538 ppc->apfx[i * 2 + 1].x.value, ppc->apfx[i * 3 + 1].y.value);
539 fixed_to_double(ppc->apfx[i * 2], em_size, vertices);
540 pgluTessVertex(tess, vertices, vertices);
542 fixed_to_double(ppc->apfx[i * 2 + 1], em_size, vertices);
543 pgluTessVertex(tess, vertices, vertices);
548 ERR("\t\tcurve type = %d\n", ppc->wType);
549 pgluTessEndContour(tess);
553 ppc = (TTPOLYCURVE*)((char*)ppc + sizeof(*ppc) +
554 (ppc->cpfx - 1) * sizeof(POINTFX));
556 pgluTessEndContour(tess);
557 pph = (TTPOLYGONHEADER*)((char*)pph + pph->cb);
561 pgluTessEndPolygon(tess);
562 glTranslated((GLdouble)gm.gmCellIncX / em_size, (GLdouble)gm.gmCellIncY / em_size, 0.0);
565 HeapFree(GetProcessHeap(), 0, buf);
566 HeapFree(GetProcessHeap(), 0, vertices);
570 DeleteObject(SelectObject(hdc, old_font));
571 pgluDeleteTess(tess);
576 #else /* SONAME_LIBGLU */
578 static BOOL wglUseFontOutlines_common(HDC hdc,
585 LPGLYPHMETRICSFLOAT lpgmf,
588 FIXME("Unable to compile in wglUseFontOutlines support without GL/glu.h\n");
592 #endif /* SONAME_LIBGLU */
594 /***********************************************************************
595 * wglUseFontOutlinesA (OPENGL32.@)
597 BOOL WINAPI wglUseFontOutlinesA(HDC hdc,
604 LPGLYPHMETRICSFLOAT lpgmf)
606 return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, FALSE);
609 /***********************************************************************
610 * wglUseFontOutlinesW (OPENGL32.@)
612 BOOL WINAPI wglUseFontOutlinesW(HDC hdc,
619 LPGLYPHMETRICSFLOAT lpgmf)
621 return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, TRUE);
624 /***********************************************************************
625 * glFinish (OPENGL32.@)
627 void WINAPI wine_glFinish( void )
630 wine_wgl.p_wglFinish();
633 /***********************************************************************
634 * glFlush (OPENGL32.@)
636 void WINAPI wine_glFlush( void )
639 wine_wgl.p_wglFlush();
642 /***********************************************************************
643 * glGetString (OPENGL32.@)
645 const GLubyte * WINAPI wine_glGetString( GLenum name )
648 const char* GL_Extensions = NULL;
650 /* this is for buggy nvidia driver, crashing if called from a different
651 thread with no context */
652 if(wglGetCurrentContext() == NULL)
655 if (GL_EXTENSIONS != name) {
657 ret = glGetString(name);
662 if (NULL == internal_gl_extensions) {
664 GL_Extensions = (const char *) glGetString(GL_EXTENSIONS);
668 size_t len = strlen(GL_Extensions);
669 internal_gl_extensions = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len + 2);
671 TRACE("GL_EXTENSIONS reported:\n");
672 while (*GL_Extensions != 0x00) {
673 const char* Start = GL_Extensions;
676 while (*GL_Extensions != ' ' && *GL_Extensions != 0x00) {
679 memcpy(ThisExtn, Start, (GL_Extensions - Start));
680 ThisExtn[GL_Extensions - Start] = 0;
681 TRACE("- %s:", ThisExtn);
683 /* test if supported API is disabled by config */
684 if (!internal_gl_disabled_extensions || !strstr(internal_gl_disabled_extensions, ThisExtn)) {
685 strcat(internal_gl_extensions, " ");
686 strcat(internal_gl_extensions, ThisExtn);
689 TRACE(" deactived (by config)\n");
692 if (*GL_Extensions == ' ') GL_Extensions++;
697 return (const GLubyte *) internal_gl_extensions;
700 /***********************************************************************
701 * glGetIntegerv (OPENGL32.@)
703 void WINAPI wine_glGetIntegerv( GLenum pname, GLint* params )
705 wine_wgl.p_wglGetIntegerv(pname, params);
708 /***********************************************************************
709 * wglSwapBuffers (OPENGL32.@)
711 BOOL WINAPI DECLSPEC_HOTPATCH wglSwapBuffers( HDC hdc )
713 return SwapBuffers(hdc);
716 /* This is for brain-dead applications that use OpenGL functions before even
717 creating a rendering context.... */
718 static BOOL process_attach(void)
720 HMODULE mod_x11, mod_gdi32;
724 GetDesktopWindow(); /* make sure winex11 is loaded (FIXME) */
725 mod_x11 = GetModuleHandleA( "winex11.drv" );
726 mod_gdi32 = GetModuleHandleA( "gdi32.dll" );
728 if (!mod_x11 || !mod_gdi32)
730 ERR("X11DRV or GDI32 not loaded. Cannot create default context.\n");
734 wine_tsx11_lock_ptr = (void *)GetProcAddress( mod_x11, "wine_tsx11_lock" );
735 wine_tsx11_unlock_ptr = (void *)GetProcAddress( mod_x11, "wine_tsx11_unlock" );
737 wine_wgl.p_wglGetProcAddress = (void *)GetProcAddress(mod_gdi32, "wglGetProcAddress");
738 wine_wgl.p_wglMakeCurrent = (void *)GetProcAddress(mod_gdi32, "wglMakeCurrent");
739 wine_wgl.p_wglCreateContext = (void *)GetProcAddress(mod_gdi32, "wglCreateContext");
741 /* Interal WGL function */
742 wine_wgl.p_wglGetIntegerv = (void *)wine_wgl.p_wglGetProcAddress("wglGetIntegerv");
743 wine_wgl.p_wglFinish = (void *)wine_wgl.p_wglGetProcAddress("wglFinish");
744 wine_wgl.p_wglFlush = (void *)wine_wgl.p_wglGetProcAddress("wglFlush");
746 if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\OpenGL", &hkey)) {
747 if (!RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, NULL, &size)) {
748 internal_gl_disabled_extensions = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
749 RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, (LPBYTE)internal_gl_disabled_extensions, &size);
750 TRACE("found DisabledExtensions=%s\n", debugstr_a(internal_gl_disabled_extensions));
759 /**********************************************************************/
761 static void process_detach(void)
763 if (libglu_handle) wine_dlclose(libglu_handle, NULL, 0);
764 HeapFree(GetProcessHeap(), 0, internal_gl_extensions);
765 HeapFree(GetProcessHeap(), 0, internal_gl_disabled_extensions);
768 /***********************************************************************
769 * OpenGL initialisation routine
771 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
775 case DLL_PROCESS_ATTACH:
776 opengl32_handle = hinst;
777 DisableThreadLibraryCalls(hinst);
778 return process_attach();
779 case DLL_PROCESS_DETACH: