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_wglDisable)(GLenum cap);
52 void WINAPI (*p_wglEnable)(GLenum cap);
53 void WINAPI (*p_wglGetIntegerv)(GLenum pname, GLint* params);
54 GLboolean WINAPI (*p_wglIsEnabled)(GLenum cap);
55 void WINAPI (*p_wglScissor)(GLint x, GLint y, GLsizei width, GLsizei height);
56 void WINAPI (*p_wglViewport)(GLint x, GLint y, GLsizei width, GLsizei height);
59 /** global wgl object */
60 static wine_wgl_t wine_wgl;
62 /* x11drv GDI escapes */
63 #define X11DRV_ESCAPE 6789
64 enum x11drv_escape_codes
66 X11DRV_GET_DISPLAY, /* get X11 display for a DC */
67 X11DRV_GET_DRAWABLE, /* get current drawable for a DC */
68 X11DRV_GET_FONT, /* get current X font for a DC */
69 X11DRV_SET_DRAWABLE, /* set current drawable for a DC */
70 X11DRV_START_EXPOSURES, /* start graphics exposures */
71 X11DRV_END_EXPOSURES, /* end graphics exposures */
72 X11DRV_GET_DCE, /* get the DCE pointer */
73 X11DRV_SET_DCE, /* set the DCE pointer */
74 X11DRV_GET_GLX_DRAWABLE, /* get current glx drawable for a DC */
75 X11DRV_SYNC_PIXMAP /* sync the dibsection to its pixmap */
78 void (*wine_tsx11_lock_ptr)(void) = NULL;
79 void (*wine_tsx11_unlock_ptr)(void) = NULL;
81 static HMODULE opengl32_handle;
83 static char internal_gl_disabled_extensions[512];
84 static char* internal_gl_extensions = NULL;
86 typedef struct wine_glcontext {
92 /* ... more stuff here */
97 Wine_GLContext *curctx = (Wine_GLContext *) NtCurrentTeb()->glContext;
99 if (curctx && curctx->do_escape)
101 enum x11drv_escape_codes escape = X11DRV_SYNC_PIXMAP;
102 ExtEscape(curctx->hdc, X11DRV_ESCAPE, sizeof(escape), (LPCSTR)&escape, 0, NULL);
105 wine_tsx11_lock_ptr();
109 const GLubyte * WINAPI wine_glGetString( GLenum name );
111 /***********************************************************************
112 * wglCreateLayerContext (OPENGL32.@)
114 HGLRC WINAPI wglCreateLayerContext(HDC hdc,
116 TRACE("(%p,%d)\n", hdc, iLayerPlane);
118 if (iLayerPlane == 0) {
119 return wglCreateContext(hdc);
121 FIXME(" no handler for layer %d\n", iLayerPlane);
126 /***********************************************************************
127 * wglCopyContext (OPENGL32.@)
129 BOOL WINAPI wglCopyContext(HGLRC hglrcSrc,
132 FIXME("(%p,%p,%d)\n", hglrcSrc, hglrcDst, mask);
137 /***********************************************************************
138 * wglDescribeLayerPlane (OPENGL32.@)
140 BOOL WINAPI wglDescribeLayerPlane(HDC hdc,
144 LPLAYERPLANEDESCRIPTOR plpd) {
145 FIXME("(%p,%d,%d,%d,%p)\n", hdc, iPixelFormat, iLayerPlane, nBytes, plpd);
150 /***********************************************************************
151 * wglGetLayerPaletteEntries (OPENGL32.@)
153 int WINAPI wglGetLayerPaletteEntries(HDC hdc,
157 const COLORREF *pcr) {
158 FIXME("(): stub !\n");
163 static int compar(const void *elt_a, const void *elt_b) {
164 return strcmp(((const OpenGL_extension *) elt_a)->name,
165 ((const OpenGL_extension *) elt_b)->name);
168 /* Check if a GL extension is supported */
169 static BOOL is_extension_supported(const char* extension)
171 const char *gl_ext_string = (const char*)wine_glGetString(GL_EXTENSIONS);
173 TRACE("Checking for extension '%s'\n", extension);
176 ERR("No OpenGL extensions found, check if your OpenGL setup is correct!\n");
180 /* We use the GetProcAddress function from the display driver to retrieve function pointers
181 * for OpenGL and WGL extensions. In case of winex11.drv the OpenGL extension lookup is done
182 * using glXGetProcAddress. This function is quite unreliable in the sense that its specs don't
183 * require the function to return NULL when a extension isn't found. For this reason we check
184 * if the OpenGL extension required for the function we are looking up is supported. */
186 /* Check if the extension is part of the GL extension string to see if it is supported. */
187 if(strstr(gl_ext_string, extension) != NULL)
190 /* In general an OpenGL function starts as an ARB/EXT extension and at some stage
191 * it becomes part of the core OpenGL library and can be reached without the ARB/EXT
192 * suffix as well. In the extension table, these functions contain GL_VERSION_major_minor.
193 * Check if we are searching for a core GL function */
194 if(strncmp(extension, "GL_VERSION_", 11) == 0)
196 const GLubyte *gl_version = glGetString(GL_VERSION);
197 const char *version = extension + 11; /* Move past 'GL_VERSION_' */
200 ERR("Error no OpenGL version found,\n");
204 /* Compare the major/minor version numbers of the native OpenGL library and what is required by the function.
205 * The gl_version string is guaranteed to have at least a major/minor and sometimes it has a release number as well. */
206 if( (gl_version[0] >= version[0]) || ((gl_version[0] == version[0]) && (gl_version[2] >= version[2])) ) {
209 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]);
215 /***********************************************************************
216 * wglGetProcAddress (OPENGL32.@)
218 PROC WINAPI wglGetProcAddress(LPCSTR lpszProc) {
220 OpenGL_extension ext;
221 const OpenGL_extension *ext_ret;
223 TRACE("(%s)\n", lpszProc);
228 /* First, look if it's not already defined in the 'standard' OpenGL functions */
229 if ((local_func = GetProcAddress(opengl32_handle, lpszProc)) != NULL) {
230 TRACE(" found function in 'standard' OpenGL functions (%p)\n", local_func);
234 /* After that, search in the thunks to find the real name of the extension */
236 ext_ret = (const OpenGL_extension *) bsearch(&ext, extension_registry,
237 extension_registry_size, sizeof(OpenGL_extension), compar);
239 /* If nothing was found, we are looking for a WGL extension or an unknown GL extension. */
240 if (ext_ret == NULL) {
241 /* If the function name starts with a w it is a WGL extension */
242 if(lpszProc[0] == 'w')
243 return wine_wgl.p_wglGetProcAddress(lpszProc);
245 /* We are dealing with an unknown GL extension. */
246 WARN("Extension '%s' not defined in opengl32.dll's function table!\n", lpszProc);
248 } else { /* We are looking for an OpenGL extension */
250 /* Check if the GL extension required by the function is available */
251 if(!is_extension_supported(ext_ret->extension)) {
252 WARN("Extension '%s' required by function '%s' not supported!\n", ext_ret->extension, lpszProc);
255 local_func = wine_wgl.p_wglGetProcAddress(ext_ret->name);
257 /* After that, look at the extensions defined in the Linux OpenGL library */
258 if (local_func == NULL) {
262 /* Remove the 3 last letters (EXT, ARB, ...).
264 I know that some extensions have more than 3 letters (MESA, NV,
265 INTEL, ...), but this is only a stop-gap measure to fix buggy
266 OpenGL drivers (moreover, it is only useful for old 1.0 apps
267 that query the glBindTextureEXT extension).
269 memcpy(buf, ext_ret->name, strlen(ext_ret->name) - 3);
270 buf[strlen(ext_ret->name) - 3] = '\0';
271 TRACE(" extension not found in the Linux OpenGL library, checking against libGL bug with %s..\n", buf);
273 ret = GetProcAddress(opengl32_handle, buf);
275 TRACE(" found function in main OpenGL library (%p) !\n", ret);
277 WARN("Did not find function %s (%s) in your OpenGL library !\n", lpszProc, ext_ret->name);
282 TRACE(" returning function (%p)\n", ext_ret->func);
283 extension_funcs[ext_ret - extension_registry] = local_func;
285 return ext_ret->func;
290 /***********************************************************************
291 * wglRealizeLayerPalette (OPENGL32.@)
293 BOOL WINAPI wglRealizeLayerPalette(HDC hdc,
301 /***********************************************************************
302 * wglSetLayerPaletteEntries (OPENGL32.@)
304 int WINAPI wglSetLayerPaletteEntries(HDC hdc,
308 const COLORREF *pcr) {
309 FIXME("(): stub !\n");
314 /***********************************************************************
315 * wglSwapLayerBuffers (OPENGL32.@)
317 BOOL WINAPI wglSwapLayerBuffers(HDC hdc,
319 TRACE_(opengl)("(%p, %08x)\n", hdc, fuPlanes);
321 if (fuPlanes & WGL_SWAP_MAIN_PLANE) {
322 if (!SwapBuffers(hdc)) return FALSE;
323 fuPlanes &= ~WGL_SWAP_MAIN_PLANE;
327 WARN("Following layers unhandled : %08x\n", fuPlanes);
335 static void fixed_to_double(POINTFX fixed, UINT em_size, GLdouble vertex[3])
337 vertex[0] = (fixed.x.value + (GLdouble)fixed.x.fract / (1 << 16)) / em_size;
338 vertex[1] = (fixed.y.value + (GLdouble)fixed.y.fract / (1 << 16)) / em_size;
342 static void tess_callback_vertex(GLvoid *vertex)
344 GLdouble *dbl = vertex;
345 TRACE("%f, %f, %f\n", dbl[0], dbl[1], dbl[2]);
349 static void tess_callback_begin(GLenum which)
351 TRACE("%d\n", which);
355 static void tess_callback_end(void)
361 /***********************************************************************
362 * wglUseFontOutlines_common
364 static BOOL WINAPI wglUseFontOutlines_common(HDC hdc,
371 LPGLYPHMETRICSFLOAT lpgmf,
375 const MAT2 identity = {{0,1},{0,0},{0,0},{0,1}};
378 HFONT old_font, unscaled_font;
382 TRACE("(%p, %d, %d, %d, %f, %f, %d, %p, %s)\n", hdc, first, count,
383 listBase, deviation, extrusion, format, lpgmf, unicode ? "W" : "A");
390 gluTessCallback(tess, GLU_TESS_VERTEX, (_GLUfuncptr)tess_callback_vertex);
391 gluTessCallback(tess, GLU_TESS_BEGIN, (_GLUfuncptr)tess_callback_begin);
392 gluTessCallback(tess, GLU_TESS_END, tess_callback_end);
396 if(!tess) return FALSE;
398 GetObjectW(GetCurrentObject(hdc, OBJ_FONT), sizeof(lf), &lf);
399 rc.left = rc.right = rc.bottom = 0;
401 DPtoLP(hdc, (POINT*)&rc, 2);
402 lf.lfHeight = -abs(rc.top - rc.bottom);
403 lf.lfOrientation = lf.lfEscapement = 0;
404 unscaled_font = CreateFontIndirectW(&lf);
405 old_font = SelectObject(hdc, unscaled_font);
407 for (glyph = first; glyph < first + count; glyph++)
412 TTPOLYGONHEADER *pph;
417 needed = GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
419 needed = GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
421 if(needed == GDI_ERROR)
424 buf = HeapAlloc(GetProcessHeap(), 0, needed);
425 vertices = HeapAlloc(GetProcessHeap(), 0, needed / sizeof(POINTFX) * 3 * sizeof(GLdouble));
428 GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
430 GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
432 TRACE("glyph %d\n", glyph);
436 lpgmf->gmfBlackBoxX = (float)gm.gmBlackBoxX / em_size;
437 lpgmf->gmfBlackBoxY = (float)gm.gmBlackBoxY / em_size;
438 lpgmf->gmfptGlyphOrigin.x = (float)gm.gmptGlyphOrigin.x / em_size;
439 lpgmf->gmfptGlyphOrigin.y = (float)gm.gmptGlyphOrigin.y / em_size;
440 lpgmf->gmfCellIncX = (float)gm.gmCellIncX / em_size;
441 lpgmf->gmfCellIncY = (float)gm.gmCellIncY / em_size;
443 TRACE("%fx%f at %f,%f inc %f,%f\n", lpgmf->gmfBlackBoxX, lpgmf->gmfBlackBoxY,
444 lpgmf->gmfptGlyphOrigin.x, lpgmf->gmfptGlyphOrigin.y, lpgmf->gmfCellIncX, lpgmf->gmfCellIncY);
449 glNewList(listBase++, GL_COMPILE);
450 gluTessBeginPolygon(tess, NULL);
452 pph = (TTPOLYGONHEADER*)buf;
453 while((BYTE*)pph < buf + needed)
455 TRACE("\tstart %d, %d\n", pph->pfxStart.x.value, pph->pfxStart.y.value);
457 gluTessBeginContour(tess);
459 fixed_to_double(pph->pfxStart, em_size, vertices);
460 gluTessVertex(tess, vertices, vertices);
463 ppc = (TTPOLYCURVE*)((char*)pph + sizeof(*pph));
464 while((char*)ppc < (char*)pph + pph->cb)
470 for(i = 0; i < ppc->cpfx; i++)
472 TRACE("\t\tline to %d, %d\n", ppc->apfx[i].x.value, ppc->apfx[i].y.value);
473 fixed_to_double(ppc->apfx[i], em_size, vertices);
474 gluTessVertex(tess, vertices, vertices);
479 case TT_PRIM_QSPLINE:
480 for(i = 0; i < ppc->cpfx/2; i++)
482 /* FIXME just connecting the control points for now */
483 TRACE("\t\tcurve %d,%d %d,%d\n",
484 ppc->apfx[i * 2].x.value, ppc->apfx[i * 3].y.value,
485 ppc->apfx[i * 2 + 1].x.value, ppc->apfx[i * 3 + 1].y.value);
486 fixed_to_double(ppc->apfx[i * 2], em_size, vertices);
487 gluTessVertex(tess, vertices, vertices);
489 fixed_to_double(ppc->apfx[i * 2 + 1], em_size, vertices);
490 gluTessVertex(tess, vertices, vertices);
495 ERR("\t\tcurve type = %d\n", ppc->wType);
496 gluTessEndContour(tess);
500 ppc = (TTPOLYCURVE*)((char*)ppc + sizeof(*ppc) +
501 (ppc->cpfx - 1) * sizeof(POINTFX));
503 gluTessEndContour(tess);
504 pph = (TTPOLYGONHEADER*)((char*)pph + pph->cb);
508 gluTessEndPolygon(tess);
509 glTranslated((GLdouble)gm.gmCellIncX / em_size, (GLdouble)gm.gmCellIncY / em_size, 0.0);
512 HeapFree(GetProcessHeap(), 0, buf);
513 HeapFree(GetProcessHeap(), 0, vertices);
517 DeleteObject(SelectObject(hdc, old_font));
523 #else /* HAVE_GL_GLU_H */
525 static BOOL WINAPI wglUseFontOutlines_common(HDC hdc,
532 LPGLYPHMETRICSFLOAT lpgmf,
535 FIXME("Unable to compile in wglUseFontOutlines support without GL/glu.h\n");
539 #endif /* HAVE_GL_GLU_H */
541 /***********************************************************************
542 * wglUseFontOutlinesA (OPENGL32.@)
544 BOOL WINAPI wglUseFontOutlinesA(HDC hdc,
551 LPGLYPHMETRICSFLOAT lpgmf)
553 return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, FALSE);
556 /***********************************************************************
557 * wglUseFontOutlinesW (OPENGL32.@)
559 BOOL WINAPI wglUseFontOutlinesW(HDC hdc,
566 LPGLYPHMETRICSFLOAT lpgmf)
568 return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, TRUE);
571 /***********************************************************************
572 * glEnable (OPENGL32.@)
574 void WINAPI wine_glEnable( GLenum cap )
576 TRACE("(%d)\n", cap );
577 wine_wgl.p_wglEnable(cap);
580 /***********************************************************************
581 * glIsEnabled (OPENGL32.@)
583 GLboolean WINAPI wine_glIsEnabled( GLenum cap )
585 TRACE("(%d)\n", cap );
586 return wine_wgl.p_wglIsEnabled(cap);
589 /***********************************************************************
590 * glDisable (OPENGL32.@)
592 void WINAPI wine_glDisable( GLenum cap )
594 TRACE("(%d)\n", cap );
595 wine_wgl.p_wglDisable(cap);
598 /***********************************************************************
599 * glScissor (OPENGL32.@)
601 void WINAPI wine_glScissor( GLint x, GLint y, GLsizei width, GLsizei height )
603 TRACE("(%d, %d, %d, %d)\n", x, y, width, height );
604 wine_wgl.p_wglScissor(x, y, width, height);
607 /***********************************************************************
608 * glViewport (OPENGL32.@)
610 void WINAPI wine_glViewport( GLint x, GLint y, GLsizei width, GLsizei height )
612 TRACE("(%d, %d, %d, %d)\n", x, y, width, height );
613 wine_wgl.p_wglViewport(x, y, width, height);
616 /***********************************************************************
617 * glGetString (OPENGL32.@)
619 const GLubyte * WINAPI wine_glGetString( GLenum name )
622 const char* GL_Extensions = NULL;
624 if (GL_EXTENSIONS != name) {
626 ret = glGetString(name);
631 if (NULL == internal_gl_extensions) {
633 GL_Extensions = (const char *) glGetString(GL_EXTENSIONS);
637 size_t len = strlen(GL_Extensions);
638 internal_gl_extensions = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len + 2);
640 TRACE("GL_EXTENSIONS reported:\n");
641 while (*GL_Extensions != 0x00) {
642 const char* Start = GL_Extensions;
645 while (*GL_Extensions != ' ' && *GL_Extensions != 0x00) {
648 memcpy(ThisExtn, Start, (GL_Extensions - Start));
649 ThisExtn[GL_Extensions - Start] = 0;
650 TRACE("- %s:", ThisExtn);
652 /* test if supported API is disabled by config */
653 if (NULL == strstr(internal_gl_disabled_extensions, ThisExtn)) {
654 strcat(internal_gl_extensions, " ");
655 strcat(internal_gl_extensions, ThisExtn);
658 TRACE(" deactived (by config)\n");
661 if (*GL_Extensions == ' ') GL_Extensions++;
666 return (const GLubyte *) internal_gl_extensions;
669 /***********************************************************************
670 * glGetIntegerv (OPENGL32.@)
672 void WINAPI wine_glGetIntegerv( GLenum pname, GLint* params )
674 wine_wgl.p_wglGetIntegerv(pname, params);
678 /* This is for brain-dead applications that use OpenGL functions before even
679 creating a rendering context.... */
680 static BOOL process_attach(void)
682 HMODULE mod_x11, mod_gdi32;
683 DWORD size = sizeof(internal_gl_disabled_extensions);
686 GetDesktopWindow(); /* make sure winex11 is loaded (FIXME) */
687 mod_x11 = GetModuleHandleA( "winex11.drv" );
688 mod_gdi32 = GetModuleHandleA( "gdi32.dll" );
690 if (!mod_x11 || !mod_gdi32)
692 ERR("X11DRV or GDI32 not loaded. Cannot create default context.\n");
696 wine_tsx11_lock_ptr = (void *)GetProcAddress( mod_x11, "wine_tsx11_lock" );
697 wine_tsx11_unlock_ptr = (void *)GetProcAddress( mod_x11, "wine_tsx11_unlock" );
699 wine_wgl.p_wglGetProcAddress = (void *)GetProcAddress(mod_gdi32, "wglGetProcAddress");
701 /* Interal WGL function */
702 wine_wgl.p_wglDisable = (void *)wine_wgl.p_wglGetProcAddress("wglDisable");
703 wine_wgl.p_wglEnable = (void *)wine_wgl.p_wglGetProcAddress("wglEnable");
704 wine_wgl.p_wglGetIntegerv = (void *)wine_wgl.p_wglGetProcAddress("wglGetIntegerv");
705 wine_wgl.p_wglIsEnabled = (void *)wine_wgl.p_wglGetProcAddress("wglIsEnabled");
706 wine_wgl.p_wglScissor = (void *)wine_wgl.p_wglGetProcAddress("wglScissor");
707 wine_wgl.p_wglViewport = (void *)wine_wgl.p_wglGetProcAddress("wglViewport");
709 internal_gl_disabled_extensions[0] = 0;
710 if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\OpenGL", &hkey)) {
711 if (!RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, (LPBYTE)internal_gl_disabled_extensions, &size)) {
712 TRACE("found DisabledExtensions=\"%s\"\n", internal_gl_disabled_extensions);
721 /**********************************************************************/
723 static void process_detach(void)
725 HeapFree(GetProcessHeap(), 0, internal_gl_extensions);
728 /***********************************************************************
729 * OpenGL initialisation routine
731 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
735 case DLL_PROCESS_ATTACH:
736 opengl32_handle = hinst;
737 DisableThreadLibraryCalls(hinst);
738 return process_attach();
739 case DLL_PROCESS_DETACH: