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"
37 #include "opengl_ext.h"
43 #include "wine/library.h"
44 #include "wine/debug.h"
46 WINE_DEFAULT_DEBUG_CHANNEL(wgl);
47 WINE_DECLARE_DEBUG_CHANNEL(opengl);
49 typedef struct wine_wgl_s {
50 PROC WINAPI (*p_wglGetProcAddress)(LPCSTR lpszProc);
52 void WINAPI (*p_wglGetIntegerv)(GLenum pname, GLint* params);
55 /** global wgl object */
56 static wine_wgl_t wine_wgl;
58 /* x11drv GDI escapes */
59 #define X11DRV_ESCAPE 6789
60 enum x11drv_escape_codes
62 X11DRV_GET_DISPLAY, /* get X11 display for a DC */
63 X11DRV_GET_DRAWABLE, /* get current drawable for a DC */
64 X11DRV_GET_FONT, /* get current X font for a DC */
65 X11DRV_SET_DRAWABLE, /* set current drawable for a DC */
66 X11DRV_START_EXPOSURES, /* start graphics exposures */
67 X11DRV_END_EXPOSURES, /* end graphics exposures */
68 X11DRV_GET_DCE, /* get the DCE pointer */
69 X11DRV_SET_DCE, /* set the DCE pointer */
70 X11DRV_GET_GLX_DRAWABLE, /* get current glx drawable for a DC */
71 X11DRV_SYNC_PIXMAP /* sync the dibsection to its pixmap */
74 void (*wine_tsx11_lock_ptr)(void) = NULL;
75 void (*wine_tsx11_unlock_ptr)(void) = NULL;
77 static HMODULE opengl32_handle;
79 static char internal_gl_disabled_extensions[512];
80 static char* internal_gl_extensions = NULL;
82 typedef struct wine_glcontext {
89 struct wine_glcontext *next;
90 struct wine_glcontext *prev;
95 Wine_GLContext *curctx = (Wine_GLContext *) NtCurrentTeb()->glContext;
97 if (curctx && curctx->do_escape)
99 enum x11drv_escape_codes escape = X11DRV_SYNC_PIXMAP;
100 ExtEscape(curctx->hdc, X11DRV_ESCAPE, sizeof(escape), (LPCSTR)&escape, 0, NULL);
103 wine_tsx11_lock_ptr();
107 /***********************************************************************
108 * wglCreateLayerContext (OPENGL32.@)
110 HGLRC WINAPI wglCreateLayerContext(HDC hdc,
112 TRACE("(%p,%d)\n", hdc, iLayerPlane);
114 if (iLayerPlane == 0) {
115 return wglCreateContext(hdc);
117 FIXME(" no handler for layer %d\n", iLayerPlane);
122 /***********************************************************************
123 * wglCopyContext (OPENGL32.@)
125 BOOL WINAPI wglCopyContext(HGLRC hglrcSrc,
128 FIXME("(%p,%p,%d)\n", hglrcSrc, hglrcDst, mask);
133 /***********************************************************************
134 * wglDescribeLayerPlane (OPENGL32.@)
136 BOOL WINAPI wglDescribeLayerPlane(HDC hdc,
140 LPLAYERPLANEDESCRIPTOR plpd) {
141 FIXME("(%p,%d,%d,%d,%p)\n", hdc, iPixelFormat, iLayerPlane, nBytes, plpd);
146 /***********************************************************************
147 * wglGetLayerPaletteEntries (OPENGL32.@)
149 int WINAPI wglGetLayerPaletteEntries(HDC hdc,
153 const COLORREF *pcr) {
154 FIXME("(): stub !\n");
159 static int compar(const void *elt_a, const void *elt_b) {
160 return strcmp(((const OpenGL_extension *) elt_a)->name,
161 ((const OpenGL_extension *) elt_b)->name);
164 /* Check if a GL extension is supported */
165 static BOOL is_extension_supported(const char* extension)
167 const char *gl_ext_string = (const char*)internal_glGetString(GL_EXTENSIONS);
169 TRACE("Checking for extension '%s'\n", extension);
172 ERR("No OpenGL extensions found, check if your OpenGL setup is correct!\n");
176 /* We use the GetProcAddress function from the display driver to retrieve function pointers
177 * for OpenGL and WGL extensions. In case of winex11.drv the OpenGL extension lookup is done
178 * using glXGetProcAddress. This function is quite unreliable in the sense that its specs don't
179 * require the function to return NULL when a extension isn't found. For this reason we check
180 * if the OpenGL extension required for the function we are looking up is supported. */
182 /* Check if the extension is part of the GL extension string to see if it is supported. */
183 if(strstr(gl_ext_string, extension) != NULL)
186 /* In general an OpenGL function starts as an ARB/EXT extension and at some stage
187 * it becomes part of the core OpenGL library and can be reached without the ARB/EXT
188 * suffix as well. In the extension table, these functions contain GL_VERSION_major_minor.
189 * Check if we are searching for a core GL function */
190 if(strncmp(extension, "GL_VERSION_", 11) == 0)
192 const GLubyte *gl_version = glGetString(GL_VERSION);
193 const const char *version = extension + 11; /* Move past 'GL_VERSION_' */
196 ERR("Error no OpenGL version found,\n");
200 /* Compare the major/minor version numbers of the native OpenGL library and what is required by the function.
201 * The gl_version string is guaranteed to have at least a major/minor and sometimes it has a release number as well. */
202 if( (gl_version[0] >= version[0]) || ((gl_version[0] == version[0]) && (gl_version[2] >= version[2])) ) {
205 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]);
211 /***********************************************************************
212 * wglGetProcAddress (OPENGL32.@)
214 PROC WINAPI wglGetProcAddress(LPCSTR lpszProc) {
216 OpenGL_extension ext;
217 const OpenGL_extension *ext_ret;
219 TRACE("(%s)\n", lpszProc);
221 /* First, look if it's not already defined in the 'standard' OpenGL functions */
222 if ((local_func = GetProcAddress(opengl32_handle, lpszProc)) != NULL) {
223 TRACE(" found function in 'standard' OpenGL functions (%p)\n", local_func);
227 /* After that, search in the thunks to find the real name of the extension */
229 ext_ret = (const OpenGL_extension *) bsearch(&ext, extension_registry,
230 extension_registry_size, sizeof(OpenGL_extension), compar);
232 /* If nothing was found, we are looking for a WGL extension */
233 if (ext_ret == NULL) {
234 WARN("Extension '%s' not defined in opengl32.dll's function table!\n", lpszProc);
235 return wine_wgl.p_wglGetProcAddress(lpszProc);
236 } else { /* We are looking for an OpenGL extension */
238 /* Check if the GL extension required by the function is available */
239 if(!is_extension_supported(ext_ret->extension)) {
240 WARN("Extension '%s' required by function '%s' not supported!\n", ext_ret->extension, lpszProc);
244 local_func = wine_wgl.p_wglGetProcAddress(ext_ret->name);
246 /* After that, look at the extensions defined in the Linux OpenGL library */
247 if (local_func == NULL) {
251 /* Remove the 3 last letters (EXT, ARB, ...).
253 I know that some extensions have more than 3 letters (MESA, NV,
254 INTEL, ...), but this is only a stop-gap measure to fix buggy
255 OpenGL drivers (moreover, it is only useful for old 1.0 apps
256 that query the glBindTextureEXT extension).
258 memcpy(buf, ext_ret->name, strlen(ext_ret->name) - 3);
259 buf[strlen(ext_ret->name) - 3] = '\0';
260 TRACE(" extension not found in the Linux OpenGL library, checking against libGL bug with %s..\n", buf);
262 ret = GetProcAddress(opengl32_handle, buf);
264 TRACE(" found function in main OpenGL library (%p) !\n", ret);
266 WARN("Did not find function %s (%s) in your OpenGL library !\n", lpszProc, ext_ret->name);
271 TRACE(" returning function (%p)\n", ext_ret->func);
272 extension_funcs[ext_ret - extension_registry] = local_func;
274 return ext_ret->func;
279 /***********************************************************************
280 * wglRealizeLayerPalette (OPENGL32.@)
282 BOOL WINAPI wglRealizeLayerPalette(HDC hdc,
290 /***********************************************************************
291 * wglSetLayerPaletteEntries (OPENGL32.@)
293 int WINAPI wglSetLayerPaletteEntries(HDC hdc,
297 const COLORREF *pcr) {
298 FIXME("(): stub !\n");
303 /***********************************************************************
304 * wglSwapLayerBuffers (OPENGL32.@)
306 BOOL WINAPI wglSwapLayerBuffers(HDC hdc,
308 TRACE_(opengl)("(%p, %08x)\n", hdc, fuPlanes);
310 if (fuPlanes & WGL_SWAP_MAIN_PLANE) {
311 if (!SwapBuffers(hdc)) return FALSE;
312 fuPlanes &= ~WGL_SWAP_MAIN_PLANE;
316 WARN("Following layers unhandled : %08x\n", fuPlanes);
324 static void fixed_to_double(POINTFX fixed, UINT em_size, GLdouble vertex[3])
326 vertex[0] = (fixed.x.value + (GLdouble)fixed.x.fract / (1 << 16)) / em_size;
327 vertex[1] = (fixed.y.value + (GLdouble)fixed.y.fract / (1 << 16)) / em_size;
331 static void tess_callback_vertex(GLvoid *vertex)
333 GLdouble *dbl = vertex;
334 TRACE("%f, %f, %f\n", dbl[0], dbl[1], dbl[2]);
338 static void tess_callback_begin(GLenum which)
340 TRACE("%d\n", which);
344 static void tess_callback_end(void)
350 /***********************************************************************
351 * wglUseFontOutlines_common
353 BOOL WINAPI wglUseFontOutlines_common(HDC hdc,
360 LPGLYPHMETRICSFLOAT lpgmf,
364 const MAT2 identity = {{0,1},{0,0},{0,0},{0,1}};
367 HFONT old_font, unscaled_font;
371 TRACE("(%p, %d, %d, %d, %f, %f, %d, %p, %s)\n", hdc, first, count,
372 listBase, deviation, extrusion, format, lpgmf, unicode ? "W" : "A");
379 gluTessCallback(tess, GLU_TESS_VERTEX, (_GLUfuncptr)tess_callback_vertex);
380 gluTessCallback(tess, GLU_TESS_BEGIN, (_GLUfuncptr)tess_callback_begin);
381 gluTessCallback(tess, GLU_TESS_END, tess_callback_end);
385 if(!tess) return FALSE;
387 GetObjectW(GetCurrentObject(hdc, OBJ_FONT), sizeof(lf), &lf);
388 rc.left = rc.right = rc.bottom = 0;
390 DPtoLP(hdc, (POINT*)&rc, 2);
391 lf.lfHeight = -abs(rc.top - rc.bottom);
392 lf.lfOrientation = lf.lfEscapement = 0;
393 unscaled_font = CreateFontIndirectW(&lf);
394 old_font = SelectObject(hdc, unscaled_font);
396 for (glyph = first; glyph < first + count; glyph++)
401 TTPOLYGONHEADER *pph;
406 needed = GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
408 needed = GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
410 if(needed == GDI_ERROR)
413 buf = HeapAlloc(GetProcessHeap(), 0, needed);
414 vertices = HeapAlloc(GetProcessHeap(), 0, needed / sizeof(POINTFX) * 3 * sizeof(GLdouble));
417 GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
419 GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
421 TRACE("glyph %d\n", glyph);
425 lpgmf->gmfBlackBoxX = (float)gm.gmBlackBoxX / em_size;
426 lpgmf->gmfBlackBoxY = (float)gm.gmBlackBoxY / em_size;
427 lpgmf->gmfptGlyphOrigin.x = (float)gm.gmptGlyphOrigin.x / em_size;
428 lpgmf->gmfptGlyphOrigin.y = (float)gm.gmptGlyphOrigin.y / em_size;
429 lpgmf->gmfCellIncX = (float)gm.gmCellIncX / em_size;
430 lpgmf->gmfCellIncY = (float)gm.gmCellIncY / em_size;
432 TRACE("%fx%f at %f,%f inc %f,%f\n", lpgmf->gmfBlackBoxX, lpgmf->gmfBlackBoxY,
433 lpgmf->gmfptGlyphOrigin.x, lpgmf->gmfptGlyphOrigin.y, lpgmf->gmfCellIncX, lpgmf->gmfCellIncY);
438 glNewList(listBase++, GL_COMPILE);
439 gluTessBeginPolygon(tess, NULL);
441 pph = (TTPOLYGONHEADER*)buf;
442 while((BYTE*)pph < buf + needed)
444 TRACE("\tstart %d, %d\n", pph->pfxStart.x.value, pph->pfxStart.y.value);
446 gluTessBeginContour(tess);
448 fixed_to_double(pph->pfxStart, em_size, vertices);
449 gluTessVertex(tess, vertices, vertices);
452 ppc = (TTPOLYCURVE*)((char*)pph + sizeof(*pph));
453 while((char*)ppc < (char*)pph + pph->cb)
459 for(i = 0; i < ppc->cpfx; i++)
461 TRACE("\t\tline to %d, %d\n", ppc->apfx[i].x.value, ppc->apfx[i].y.value);
462 fixed_to_double(ppc->apfx[i], em_size, vertices);
463 gluTessVertex(tess, vertices, vertices);
468 case TT_PRIM_QSPLINE:
469 for(i = 0; i < ppc->cpfx/2; i++)
471 /* FIXME just connecting the control points for now */
472 TRACE("\t\tcurve %d,%d %d,%d\n",
473 ppc->apfx[i * 2].x.value, ppc->apfx[i * 3].y.value,
474 ppc->apfx[i * 2 + 1].x.value, ppc->apfx[i * 3 + 1].y.value);
475 fixed_to_double(ppc->apfx[i * 2], em_size, vertices);
476 gluTessVertex(tess, vertices, vertices);
478 fixed_to_double(ppc->apfx[i * 2 + 1], em_size, vertices);
479 gluTessVertex(tess, vertices, vertices);
484 ERR("\t\tcurve type = %d\n", ppc->wType);
485 gluTessEndContour(tess);
489 ppc = (TTPOLYCURVE*)((char*)ppc + sizeof(*ppc) +
490 (ppc->cpfx - 1) * sizeof(POINTFX));
492 gluTessEndContour(tess);
493 pph = (TTPOLYGONHEADER*)((char*)pph + pph->cb);
497 gluTessEndPolygon(tess);
498 glTranslated((GLdouble)gm.gmCellIncX / em_size, (GLdouble)gm.gmCellIncY / em_size, 0.0);
501 HeapFree(GetProcessHeap(), 0, buf);
502 HeapFree(GetProcessHeap(), 0, vertices);
506 DeleteObject(SelectObject(hdc, old_font));
512 #else /* HAVE_GL_GLU_H */
514 BOOL WINAPI wglUseFontOutlines_common(HDC hdc,
521 LPGLYPHMETRICSFLOAT lpgmf,
524 FIXME("Unable to compile in wglUseFontOutlines support without GL/glu.h\n");
528 #endif /* HAVE_GL_GLU_H */
530 /***********************************************************************
531 * wglUseFontOutlinesA (OPENGL32.@)
533 BOOL WINAPI wglUseFontOutlinesA(HDC hdc,
540 LPGLYPHMETRICSFLOAT lpgmf)
542 return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, FALSE);
545 /***********************************************************************
546 * wglUseFontOutlinesW (OPENGL32.@)
548 BOOL WINAPI wglUseFontOutlinesW(HDC hdc,
555 LPGLYPHMETRICSFLOAT lpgmf)
557 return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, TRUE);
560 const GLubyte * internal_glGetString(GLenum name) {
561 const char* GL_Extensions = NULL;
563 if (GL_EXTENSIONS != name) {
564 return glGetString(name);
567 if (NULL == internal_gl_extensions) {
568 GL_Extensions = (const char *) glGetString(GL_EXTENSIONS);
570 TRACE("GL_EXTENSIONS reported:\n");
571 if (NULL == GL_Extensions) {
572 ERR("GL_EXTENSIONS returns NULL\n");
575 size_t len = strlen(GL_Extensions);
576 internal_gl_extensions = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len + 2);
578 while (*GL_Extensions != 0x00) {
579 const char* Start = GL_Extensions;
582 memset(ThisExtn, 0x00, sizeof(ThisExtn));
583 while (*GL_Extensions != ' ' && *GL_Extensions != 0x00) {
586 memcpy(ThisExtn, Start, (GL_Extensions - Start));
587 TRACE("- %s:", ThisExtn);
589 /* test if supported API is disabled by config */
590 if (NULL == strstr(internal_gl_disabled_extensions, ThisExtn)) {
591 strcat(internal_gl_extensions, " ");
592 strcat(internal_gl_extensions, ThisExtn);
595 TRACE(" deactived (by config)\n");
598 if (*GL_Extensions == ' ') GL_Extensions++;
602 return (const GLubyte *) internal_gl_extensions;
605 void internal_glGetIntegerv(GLenum pname, GLint* params) {
606 TRACE("pname: 0x%x, params %p\n", pname, params);
607 glGetIntegerv(pname, params);
608 /* A few parameters like GL_DEPTH_BITS differ between WGL and GLX, the wglGetIntegerv helper function handles those */
609 wine_wgl.p_wglGetIntegerv(pname, params);
613 /* No need to load any other libraries as according to the ABI, libGL should be self-sufficient and
614 include all dependencies
617 #define SONAME_LIBGL "libGL.so"
620 /* This is for brain-dead applications that use OpenGL functions before even
621 creating a rendering context.... */
622 static BOOL process_attach(void)
624 HMODULE mod_x11, mod_gdi32;
625 DWORD size = sizeof(internal_gl_disabled_extensions);
628 GetDesktopWindow(); /* make sure winex11 is loaded (FIXME) */
629 mod_x11 = GetModuleHandleA( "winex11.drv" );
630 mod_gdi32 = GetModuleHandleA( "gdi32.dll" );
632 if (!mod_x11 || !mod_gdi32)
634 ERR("X11DRV or GDI32 not loaded. Cannot create default context.\n");
638 wine_tsx11_lock_ptr = (void *)GetProcAddress( mod_x11, "wine_tsx11_lock" );
639 wine_tsx11_unlock_ptr = (void *)GetProcAddress( mod_x11, "wine_tsx11_unlock" );
641 wine_wgl.p_wglGetProcAddress = (void *)GetProcAddress(mod_gdi32, "wglGetProcAddress");
643 /* Interal WGL function */
644 wine_wgl.p_wglGetIntegerv = (void *)wine_wgl.p_wglGetProcAddress("wglGetIntegerv");
646 internal_gl_disabled_extensions[0] = 0;
647 if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\OpenGL", &hkey)) {
648 if (!RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, (LPBYTE)internal_gl_disabled_extensions, &size)) {
649 TRACE("found DisabledExtensions=\"%s\"\n", internal_gl_disabled_extensions);
658 /**********************************************************************/
660 static void process_detach(void)
662 HeapFree(GetProcessHeap(), 0, internal_gl_extensions);
665 /***********************************************************************
666 * OpenGL initialisation routine
668 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
672 case DLL_PROCESS_ATTACH:
673 opengl32_handle = hinst;
674 DisableThreadLibraryCalls(hinst);
675 return process_attach();
676 case DLL_PROCESS_DETACH: