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);
48 typedef struct wine_wgl_s {
49 PROC WINAPI (*p_wglGetProcAddress)(LPCSTR lpszProc);
51 void WINAPI (*p_wglGetIntegerv)(GLenum pname, GLint* params);
52 void WINAPI (*p_wglFinish)(void);
53 void WINAPI (*p_wglFlush)(void);
56 /** global wgl object */
57 static wine_wgl_t wine_wgl;
60 #define MAKE_FUNCPTR(f) static typeof(f) * p##f;
61 MAKE_FUNCPTR(gluNewTess)
62 MAKE_FUNCPTR(gluDeleteTess)
63 MAKE_FUNCPTR(gluTessBeginContour)
64 MAKE_FUNCPTR(gluTessBeginPolygon)
65 MAKE_FUNCPTR(gluTessCallback)
66 MAKE_FUNCPTR(gluTessEndContour)
67 MAKE_FUNCPTR(gluTessEndPolygon)
68 MAKE_FUNCPTR(gluTessVertex)
70 #endif /* SONAME_LIBGLU */
72 /* x11drv GDI escapes */
73 #define X11DRV_ESCAPE 6789
74 enum x11drv_escape_codes
76 X11DRV_GET_DISPLAY, /* get X11 display for a DC */
77 X11DRV_GET_DRAWABLE, /* get current drawable for a DC */
78 X11DRV_GET_FONT, /* get current X font for a DC */
79 X11DRV_SET_DRAWABLE, /* set current drawable for a DC */
80 X11DRV_START_EXPOSURES, /* start graphics exposures */
81 X11DRV_END_EXPOSURES, /* end graphics exposures */
82 X11DRV_GET_DCE, /* get the DCE pointer */
83 X11DRV_SET_DCE, /* set the DCE pointer */
84 X11DRV_GET_GLX_DRAWABLE, /* get current glx drawable for a DC */
85 X11DRV_SYNC_PIXMAP /* sync the dibsection to its pixmap */
88 void (*wine_tsx11_lock_ptr)(void) = NULL;
89 void (*wine_tsx11_unlock_ptr)(void) = NULL;
91 static HMODULE opengl32_handle;
92 static void* libglu_handle = NULL;
94 static char* internal_gl_disabled_extensions = NULL;
95 static char* internal_gl_extensions = NULL;
97 typedef struct wine_glcontext {
100 /* ... more stuff here */
105 Wine_GLContext *curctx = (Wine_GLContext *) NtCurrentTeb()->glContext;
107 if (curctx && curctx->do_escape)
109 enum x11drv_escape_codes escape = X11DRV_SYNC_PIXMAP;
110 ExtEscape(curctx->hdc, X11DRV_ESCAPE, sizeof(escape), (LPCSTR)&escape, 0, NULL);
113 wine_tsx11_lock_ptr();
117 const GLubyte * WINAPI wine_glGetString( GLenum name );
119 /***********************************************************************
120 * wglCreateLayerContext (OPENGL32.@)
122 HGLRC WINAPI wglCreateLayerContext(HDC hdc,
124 TRACE("(%p,%d)\n", hdc, iLayerPlane);
126 if (iLayerPlane == 0) {
127 return wglCreateContext(hdc);
129 FIXME(" no handler for layer %d\n", iLayerPlane);
134 /***********************************************************************
135 * wglDescribeLayerPlane (OPENGL32.@)
137 BOOL WINAPI wglDescribeLayerPlane(HDC hdc,
141 LPLAYERPLANEDESCRIPTOR plpd) {
142 FIXME("(%p,%d,%d,%d,%p)\n", hdc, iPixelFormat, iLayerPlane, nBytes, plpd);
147 /***********************************************************************
148 * wglGetLayerPaletteEntries (OPENGL32.@)
150 int WINAPI wglGetLayerPaletteEntries(HDC hdc,
154 const COLORREF *pcr) {
155 FIXME("(): stub !\n");
160 static int compar(const void *elt_a, const void *elt_b) {
161 return strcmp(((const OpenGL_extension *) elt_a)->name,
162 ((const OpenGL_extension *) elt_b)->name);
165 /* Check if a GL extension is supported */
166 static BOOL is_extension_supported(const char* extension)
168 const char *gl_ext_string = (const char*)wine_glGetString(GL_EXTENSIONS);
170 TRACE("Checking for extension '%s'\n", extension);
173 ERR("No OpenGL extensions found, check if your OpenGL setup is correct!\n");
177 /* We use the GetProcAddress function from the display driver to retrieve function pointers
178 * for OpenGL and WGL extensions. In case of winex11.drv the OpenGL extension lookup is done
179 * using glXGetProcAddress. This function is quite unreliable in the sense that its specs don't
180 * require the function to return NULL when a extension isn't found. For this reason we check
181 * if the OpenGL extension required for the function we are looking up is supported. */
183 /* Check if the extension is part of the GL extension string to see if it is supported. */
184 if(strstr(gl_ext_string, extension) != NULL)
187 /* In general an OpenGL function starts as an ARB/EXT extension and at some stage
188 * it becomes part of the core OpenGL library and can be reached without the ARB/EXT
189 * suffix as well. In the extension table, these functions contain GL_VERSION_major_minor.
190 * Check if we are searching for a core GL function */
191 if(strncmp(extension, "GL_VERSION_", 11) == 0)
193 const GLubyte *gl_version = glGetString(GL_VERSION);
194 const char *version = extension + 11; /* Move past 'GL_VERSION_' */
197 ERR("Error no OpenGL version found,\n");
201 /* Compare the major/minor version numbers of the native OpenGL library and what is required by the function.
202 * The gl_version string is guaranteed to have at least a major/minor and sometimes it has a release number as well. */
203 if( (gl_version[0] >= version[0]) || ((gl_version[0] == version[0]) && (gl_version[2] >= version[2])) ) {
206 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]);
212 /***********************************************************************
213 * wglGetProcAddress (OPENGL32.@)
215 PROC WINAPI wglGetProcAddress(LPCSTR lpszProc) {
217 OpenGL_extension ext;
218 const OpenGL_extension *ext_ret;
220 TRACE("(%s)\n", lpszProc);
225 /* First, look if it's not already defined in the 'standard' OpenGL functions */
226 if ((local_func = GetProcAddress(opengl32_handle, lpszProc)) != NULL) {
227 TRACE(" found function in 'standard' OpenGL functions (%p)\n", local_func);
231 /* After that, search in the thunks to find the real name of the extension */
233 ext_ret = (const OpenGL_extension *) bsearch(&ext, extension_registry,
234 extension_registry_size, sizeof(OpenGL_extension), compar);
236 /* If nothing was found, we are looking for a WGL extension or an unknown GL extension. */
237 if (ext_ret == NULL) {
238 /* If the function name starts with a w it is a WGL extension */
239 if(lpszProc[0] == 'w')
240 return wine_wgl.p_wglGetProcAddress(lpszProc);
242 /* We are dealing with an unknown GL extension. */
243 WARN("Extension '%s' not defined in opengl32.dll's function table!\n", lpszProc);
245 } else { /* We are looking for an OpenGL extension */
247 /* Check if the GL extension required by the function is available */
248 if(!is_extension_supported(ext_ret->extension)) {
249 WARN("Extension '%s' required by function '%s' not supported!\n", ext_ret->extension, lpszProc);
252 local_func = wine_wgl.p_wglGetProcAddress(ext_ret->name);
254 /* After that, look at the extensions defined in the Linux OpenGL library */
255 if (local_func == NULL) {
259 /* Remove the 3 last letters (EXT, ARB, ...).
261 I know that some extensions have more than 3 letters (MESA, NV,
262 INTEL, ...), but this is only a stop-gap measure to fix buggy
263 OpenGL drivers (moreover, it is only useful for old 1.0 apps
264 that query the glBindTextureEXT extension).
266 memcpy(buf, ext_ret->name, strlen(ext_ret->name) - 3);
267 buf[strlen(ext_ret->name) - 3] = '\0';
268 TRACE(" extension not found in the Linux OpenGL library, checking against libGL bug with %s..\n", buf);
270 ret = GetProcAddress(opengl32_handle, buf);
272 TRACE(" found function in main OpenGL library (%p) !\n", ret);
274 WARN("Did not find function %s (%s) in your OpenGL library !\n", lpszProc, ext_ret->name);
279 TRACE(" returning function (%p)\n", ext_ret->func);
280 extension_funcs[ext_ret - extension_registry] = local_func;
282 return ext_ret->func;
287 /***********************************************************************
288 * wglRealizeLayerPalette (OPENGL32.@)
290 BOOL WINAPI wglRealizeLayerPalette(HDC hdc,
298 /***********************************************************************
299 * wglSetLayerPaletteEntries (OPENGL32.@)
301 int WINAPI wglSetLayerPaletteEntries(HDC hdc,
305 const COLORREF *pcr) {
306 FIXME("(): stub !\n");
311 /***********************************************************************
312 * wglSwapLayerBuffers (OPENGL32.@)
314 BOOL WINAPI wglSwapLayerBuffers(HDC hdc,
316 TRACE_(opengl)("(%p, %08x)\n", hdc, fuPlanes);
318 if (fuPlanes & WGL_SWAP_MAIN_PLANE) {
319 if (!SwapBuffers(hdc)) return FALSE;
320 fuPlanes &= ~WGL_SWAP_MAIN_PLANE;
324 WARN("Following layers unhandled : %08x\n", fuPlanes);
332 static void *load_libglu(void)
334 static int already_loaded;
337 if (already_loaded) return libglu_handle;
340 TRACE("Trying to load GLU library: %s\n", SONAME_LIBGLU);
341 handle = wine_dlopen(SONAME_LIBGLU, RTLD_NOW, NULL, 0);
344 WARN("Failed to load %s\n", SONAME_LIBGLU);
348 #define LOAD_FUNCPTR(f) if((p##f = (void*)wine_dlsym(handle, #f, NULL, 0)) == NULL) goto sym_not_found;
349 LOAD_FUNCPTR(gluNewTess)
350 LOAD_FUNCPTR(gluDeleteTess)
351 LOAD_FUNCPTR(gluTessBeginContour)
352 LOAD_FUNCPTR(gluTessBeginPolygon)
353 LOAD_FUNCPTR(gluTessCallback)
354 LOAD_FUNCPTR(gluTessEndContour)
355 LOAD_FUNCPTR(gluTessEndPolygon)
356 LOAD_FUNCPTR(gluTessVertex)
358 libglu_handle = handle;
362 WARN("Unable to load function ptrs from libGLU\n");
363 /* Close the library as we won't use it */
364 wine_dlclose(handle, NULL, 0);
368 static void fixed_to_double(POINTFX fixed, UINT em_size, GLdouble vertex[3])
370 vertex[0] = (fixed.x.value + (GLdouble)fixed.x.fract / (1 << 16)) / em_size;
371 vertex[1] = (fixed.y.value + (GLdouble)fixed.y.fract / (1 << 16)) / em_size;
375 static void tess_callback_vertex(GLvoid *vertex)
377 GLdouble *dbl = vertex;
378 TRACE("%f, %f, %f\n", dbl[0], dbl[1], dbl[2]);
382 static void tess_callback_begin(GLenum which)
384 TRACE("%d\n", which);
388 static void tess_callback_end(void)
394 /***********************************************************************
395 * wglUseFontOutlines_common
397 static BOOL WINAPI wglUseFontOutlines_common(HDC hdc,
404 LPGLYPHMETRICSFLOAT lpgmf,
408 const MAT2 identity = {{0,1},{0,0},{0,0},{0,1}};
411 HFONT old_font, unscaled_font;
415 TRACE("(%p, %d, %d, %d, %f, %f, %d, %p, %s)\n", hdc, first, count,
416 listBase, deviation, extrusion, format, lpgmf, unicode ? "W" : "A");
420 ERR("libGLU is required for this function but isn't loaded\n");
425 tess = pgluNewTess();
428 pgluTessCallback(tess, GLU_TESS_VERTEX, (_GLUfuncptr)tess_callback_vertex);
429 pgluTessCallback(tess, GLU_TESS_BEGIN, (_GLUfuncptr)tess_callback_begin);
430 pgluTessCallback(tess, GLU_TESS_END, tess_callback_end);
434 if(!tess) return FALSE;
436 GetObjectW(GetCurrentObject(hdc, OBJ_FONT), sizeof(lf), &lf);
437 rc.left = rc.right = rc.bottom = 0;
439 DPtoLP(hdc, (POINT*)&rc, 2);
440 lf.lfHeight = -abs(rc.top - rc.bottom);
441 lf.lfOrientation = lf.lfEscapement = 0;
442 unscaled_font = CreateFontIndirectW(&lf);
443 old_font = SelectObject(hdc, unscaled_font);
445 for (glyph = first; glyph < first + count; glyph++)
450 TTPOLYGONHEADER *pph;
455 needed = GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
457 needed = GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
459 if(needed == GDI_ERROR)
462 buf = HeapAlloc(GetProcessHeap(), 0, needed);
463 vertices = HeapAlloc(GetProcessHeap(), 0, needed / sizeof(POINTFX) * 3 * sizeof(GLdouble));
466 GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
468 GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
470 TRACE("glyph %d\n", glyph);
474 lpgmf->gmfBlackBoxX = (float)gm.gmBlackBoxX / em_size;
475 lpgmf->gmfBlackBoxY = (float)gm.gmBlackBoxY / em_size;
476 lpgmf->gmfptGlyphOrigin.x = (float)gm.gmptGlyphOrigin.x / em_size;
477 lpgmf->gmfptGlyphOrigin.y = (float)gm.gmptGlyphOrigin.y / em_size;
478 lpgmf->gmfCellIncX = (float)gm.gmCellIncX / em_size;
479 lpgmf->gmfCellIncY = (float)gm.gmCellIncY / em_size;
481 TRACE("%fx%f at %f,%f inc %f,%f\n", lpgmf->gmfBlackBoxX, lpgmf->gmfBlackBoxY,
482 lpgmf->gmfptGlyphOrigin.x, lpgmf->gmfptGlyphOrigin.y, lpgmf->gmfCellIncX, lpgmf->gmfCellIncY);
487 glNewList(listBase++, GL_COMPILE);
488 pgluTessBeginPolygon(tess, NULL);
490 pph = (TTPOLYGONHEADER*)buf;
491 while((BYTE*)pph < buf + needed)
493 TRACE("\tstart %d, %d\n", pph->pfxStart.x.value, pph->pfxStart.y.value);
495 pgluTessBeginContour(tess);
497 fixed_to_double(pph->pfxStart, em_size, vertices);
498 pgluTessVertex(tess, vertices, vertices);
501 ppc = (TTPOLYCURVE*)((char*)pph + sizeof(*pph));
502 while((char*)ppc < (char*)pph + pph->cb)
508 for(i = 0; i < ppc->cpfx; i++)
510 TRACE("\t\tline to %d, %d\n", ppc->apfx[i].x.value, ppc->apfx[i].y.value);
511 fixed_to_double(ppc->apfx[i], em_size, vertices);
512 pgluTessVertex(tess, vertices, vertices);
517 case TT_PRIM_QSPLINE:
518 for(i = 0; i < ppc->cpfx/2; i++)
520 /* FIXME just connecting the control points for now */
521 TRACE("\t\tcurve %d,%d %d,%d\n",
522 ppc->apfx[i * 2].x.value, ppc->apfx[i * 3].y.value,
523 ppc->apfx[i * 2 + 1].x.value, ppc->apfx[i * 3 + 1].y.value);
524 fixed_to_double(ppc->apfx[i * 2], em_size, vertices);
525 pgluTessVertex(tess, vertices, vertices);
527 fixed_to_double(ppc->apfx[i * 2 + 1], em_size, vertices);
528 pgluTessVertex(tess, vertices, vertices);
533 ERR("\t\tcurve type = %d\n", ppc->wType);
534 pgluTessEndContour(tess);
538 ppc = (TTPOLYCURVE*)((char*)ppc + sizeof(*ppc) +
539 (ppc->cpfx - 1) * sizeof(POINTFX));
541 pgluTessEndContour(tess);
542 pph = (TTPOLYGONHEADER*)((char*)pph + pph->cb);
546 pgluTessEndPolygon(tess);
547 glTranslated((GLdouble)gm.gmCellIncX / em_size, (GLdouble)gm.gmCellIncY / em_size, 0.0);
550 HeapFree(GetProcessHeap(), 0, buf);
551 HeapFree(GetProcessHeap(), 0, vertices);
555 DeleteObject(SelectObject(hdc, old_font));
556 pgluDeleteTess(tess);
561 #else /* SONAME_LIBGLU */
563 static BOOL WINAPI wglUseFontOutlines_common(HDC hdc,
570 LPGLYPHMETRICSFLOAT lpgmf,
573 FIXME("Unable to compile in wglUseFontOutlines support without GL/glu.h\n");
577 #endif /* SONAME_LIBGLU */
579 /***********************************************************************
580 * wglUseFontOutlinesA (OPENGL32.@)
582 BOOL WINAPI wglUseFontOutlinesA(HDC hdc,
589 LPGLYPHMETRICSFLOAT lpgmf)
591 return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, FALSE);
594 /***********************************************************************
595 * wglUseFontOutlinesW (OPENGL32.@)
597 BOOL WINAPI wglUseFontOutlinesW(HDC hdc,
604 LPGLYPHMETRICSFLOAT lpgmf)
606 return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, TRUE);
609 /***********************************************************************
610 * glFinish (OPENGL32.@)
612 void WINAPI wine_glFinish( void )
615 wine_wgl.p_wglFinish();
618 /***********************************************************************
619 * glFlush (OPENGL32.@)
621 void WINAPI wine_glFlush( void )
624 wine_wgl.p_wglFlush();
627 /***********************************************************************
628 * glGetString (OPENGL32.@)
630 const GLubyte * WINAPI wine_glGetString( GLenum name )
633 const char* GL_Extensions = NULL;
635 if (GL_EXTENSIONS != name) {
637 ret = glGetString(name);
642 if (NULL == internal_gl_extensions) {
644 GL_Extensions = (const char *) glGetString(GL_EXTENSIONS);
648 size_t len = strlen(GL_Extensions);
649 internal_gl_extensions = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len + 2);
651 TRACE("GL_EXTENSIONS reported:\n");
652 while (*GL_Extensions != 0x00) {
653 const char* Start = GL_Extensions;
656 while (*GL_Extensions != ' ' && *GL_Extensions != 0x00) {
659 memcpy(ThisExtn, Start, (GL_Extensions - Start));
660 ThisExtn[GL_Extensions - Start] = 0;
661 TRACE("- %s:", ThisExtn);
663 /* test if supported API is disabled by config */
664 if (!internal_gl_disabled_extensions || !strstr(internal_gl_disabled_extensions, ThisExtn)) {
665 strcat(internal_gl_extensions, " ");
666 strcat(internal_gl_extensions, ThisExtn);
669 TRACE(" deactived (by config)\n");
672 if (*GL_Extensions == ' ') GL_Extensions++;
677 return (const GLubyte *) internal_gl_extensions;
680 /***********************************************************************
681 * glGetIntegerv (OPENGL32.@)
683 void WINAPI wine_glGetIntegerv( GLenum pname, GLint* params )
685 wine_wgl.p_wglGetIntegerv(pname, params);
689 /* This is for brain-dead applications that use OpenGL functions before even
690 creating a rendering context.... */
691 static BOOL process_attach(void)
693 HMODULE mod_x11, mod_gdi32;
697 GetDesktopWindow(); /* make sure winex11 is loaded (FIXME) */
698 mod_x11 = GetModuleHandleA( "winex11.drv" );
699 mod_gdi32 = GetModuleHandleA( "gdi32.dll" );
701 if (!mod_x11 || !mod_gdi32)
703 ERR("X11DRV or GDI32 not loaded. Cannot create default context.\n");
707 wine_tsx11_lock_ptr = (void *)GetProcAddress( mod_x11, "wine_tsx11_lock" );
708 wine_tsx11_unlock_ptr = (void *)GetProcAddress( mod_x11, "wine_tsx11_unlock" );
710 wine_wgl.p_wglGetProcAddress = (void *)GetProcAddress(mod_gdi32, "wglGetProcAddress");
712 /* Interal WGL function */
713 wine_wgl.p_wglGetIntegerv = (void *)wine_wgl.p_wglGetProcAddress("wglGetIntegerv");
714 wine_wgl.p_wglFinish = (void *)wine_wgl.p_wglGetProcAddress("wglFinish");
715 wine_wgl.p_wglFlush = (void *)wine_wgl.p_wglGetProcAddress("wglFlush");
717 if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\OpenGL", &hkey)) {
718 if (!RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, NULL, &size)) {
719 internal_gl_disabled_extensions = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
720 RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, (LPBYTE)internal_gl_disabled_extensions, &size);
721 TRACE("found DisabledExtensions=%s\n", debugstr_a(internal_gl_disabled_extensions));
730 /**********************************************************************/
732 static void process_detach(void)
734 if (libglu_handle) wine_dlclose(libglu_handle, NULL, 0);
735 HeapFree(GetProcessHeap(), 0, internal_gl_extensions);
736 HeapFree(GetProcessHeap(), 0, internal_gl_disabled_extensions);
739 /***********************************************************************
740 * OpenGL initialisation routine
742 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
746 case DLL_PROCESS_ATTACH:
747 opengl32_handle = hinst;
748 DisableThreadLibraryCalls(hinst);
749 return process_attach();
750 case DLL_PROCESS_DETACH: