1 /* Window-specific OpenGL functions implementation.
3 * Copyright (c) 1999 Lionel Ulmer
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include "wine/port.h"
34 #include "opengl_ext.h"
35 #include "wine/library.h"
36 #include "wine/debug.h"
38 WINE_DEFAULT_DEBUG_CHANNEL(opengl);
40 /* x11drv GDI escapes */
41 #define X11DRV_ESCAPE 6789
42 enum x11drv_escape_codes
44 X11DRV_GET_DISPLAY, /* get X11 display for a DC */
45 X11DRV_GET_DRAWABLE, /* get current drawable for a DC */
46 X11DRV_GET_FONT, /* get current X font for a DC */
49 void (*wine_tsx11_lock_ptr)(void) = NULL;
50 void (*wine_tsx11_unlock_ptr)(void) = NULL;
52 static GLXContext default_cx = NULL;
53 static Display *default_display; /* display to use for default context */
55 static HMODULE opengl32_handle;
57 static void *(*p_glXGetProcAddressARB)(const GLubyte *);
59 typedef struct wine_glcontext {
64 struct wine_glcontext *next;
65 struct wine_glcontext *prev;
67 static Wine_GLContext *context_list;
69 static inline Wine_GLContext *get_context_from_GLXContext(GLXContext ctx)
72 for (ret = context_list; ret; ret = ret->next) if (ctx == ret->ctx) break;
76 static inline void free_context(Wine_GLContext *context)
78 if (context->next != NULL) context->next->prev = context->prev;
79 if (context->prev != NULL) context->prev->next = context->next;
80 else context_list = context->next;
82 HeapFree(GetProcessHeap(), 0, context);
85 static inline Wine_GLContext *alloc_context(void)
89 if ((ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(Wine_GLContext))))
91 ret->next = context_list;
92 if (context_list) context_list->prev = ret;
98 inline static BOOL is_valid_context( Wine_GLContext *ctx )
101 for (ptr = context_list; ptr; ptr = ptr->next) if (ptr == ctx) break;
102 return (ptr != NULL);
105 /* retrieve the X display to use on a given DC */
106 inline static Display *get_display( HDC hdc )
109 enum x11drv_escape_codes escape = X11DRV_GET_DISPLAY;
111 if (!ExtEscape( hdc, X11DRV_ESCAPE, sizeof(escape), (LPCSTR)&escape,
112 sizeof(display), (LPSTR)&display )) display = NULL;
117 /* retrieve the X drawable to use on a given DC */
118 inline static Drawable get_drawable( HDC hdc )
121 enum x11drv_escape_codes escape = X11DRV_GET_DRAWABLE;
123 if (!ExtEscape( hdc, X11DRV_ESCAPE, sizeof(escape), (LPCSTR)&escape,
124 sizeof(drawable), (LPSTR)&drawable )) drawable = 0;
129 /* retrieve the X drawable to use on a given DC */
130 inline static Font get_font( HDC hdc )
133 enum x11drv_escape_codes escape = X11DRV_GET_FONT;
135 if (!ExtEscape( hdc, X11DRV_ESCAPE, sizeof(escape), (LPCSTR)&escape,
136 sizeof(font), (LPSTR)&font )) font = 0;
141 /***********************************************************************
142 * wglCreateContext (OPENGL32.@)
144 HGLRC WINAPI wglCreateContext(HDC hdc)
149 XVisualInfo template;
150 Display *display = get_display( hdc );
152 TRACE("(%p)\n", hdc);
154 /* First, get the visual in use by the X11DRV */
155 if (!display) return 0;
156 template.visualid = (VisualID)GetPropA( GetDesktopWindow(), "__wine_x11_visual_id" );
157 vis = XGetVisualInfo(display, VisualIDMask, &template, &num);
160 ERR("NULL visual !!!\n");
161 /* Need to set errors here */
165 /* The context will be allocated in the wglMakeCurrent call */
167 ret = alloc_context();
170 ret->display = display;
173 TRACE(" creating context %p (GL context creation delayed)\n", ret);
177 /***********************************************************************
178 * wglCreateLayerContext (OPENGL32.@)
180 HGLRC WINAPI wglCreateLayerContext(HDC hdc,
182 TRACE("(%p,%d)\n", hdc, iLayerPlane);
184 if (iLayerPlane == 0) {
185 return wglCreateContext(hdc);
187 FIXME(" no handler for layer %d\n", iLayerPlane);
192 /***********************************************************************
193 * wglCopyContext (OPENGL32.@)
195 BOOL WINAPI wglCopyContext(HGLRC hglrcSrc,
198 FIXME("(%p,%p,%d)\n", hglrcSrc, hglrcDst, mask);
203 /***********************************************************************
204 * wglDeleteContext (OPENGL32.@)
206 BOOL WINAPI wglDeleteContext(HGLRC hglrc)
208 Wine_GLContext *ctx = (Wine_GLContext *) hglrc;
211 TRACE("(%p)\n", hglrc);
214 /* A game (Half Life not to name it) deletes twice the same context,
215 * so make sure it is valid first */
216 if (is_valid_context( ctx ))
218 if (ctx->ctx) glXDestroyContext(ctx->display, ctx->ctx);
223 WARN("Error deleting context !\n");
224 SetLastError(ERROR_INVALID_HANDLE);
232 /***********************************************************************
233 * wglDescribeLayerPlane (OPENGL32.@)
235 BOOL WINAPI wglDescribeLayerPlane(HDC hdc,
239 LPLAYERPLANEDESCRIPTOR plpd) {
240 FIXME("(%p,%d,%d,%d,%p)\n", hdc, iPixelFormat, iLayerPlane, nBytes, plpd);
245 /***********************************************************************
246 * wglGetCurrentContext (OPENGL32.@)
248 HGLRC WINAPI wglGetCurrentContext(void) {
255 gl_ctx = glXGetCurrentContext();
256 ret = get_context_from_GLXContext(gl_ctx);
259 TRACE(" returning %p (GL context %p)\n", ret, gl_ctx);
264 /***********************************************************************
265 * wglGetCurrentDC (OPENGL32.@)
267 HDC WINAPI wglGetCurrentDC(void) {
274 gl_ctx = glXGetCurrentContext();
275 ret = get_context_from_GLXContext(gl_ctx);
279 TRACE(" returning %p (GL context %p - Wine context %p)\n", ret->hdc, gl_ctx, ret);
282 TRACE(" no Wine context found for GLX context %p\n", gl_ctx);
287 /***********************************************************************
288 * wglGetLayerPaletteEntries (OPENGL32.@)
290 int WINAPI wglGetLayerPaletteEntries(HDC hdc,
294 const COLORREF *pcr) {
295 FIXME("(): stub !\n");
300 /***********************************************************************
301 * wglGetProcAddress (OPENGL32.@)
303 static int compar(const void *elt_a, const void *elt_b) {
304 return strcmp(((OpenGL_extension *) elt_a)->name,
305 ((OpenGL_extension *) elt_b)->name);
308 static int wgl_compar(const void *elt_a, const void *elt_b) {
309 return strcmp(((WGL_extension *) elt_a)->func_name,
310 ((WGL_extension *) elt_b)->func_name);
313 void* WINAPI wglGetProcAddress(LPCSTR lpszProc) {
315 OpenGL_extension ext;
316 OpenGL_extension *ext_ret;
318 TRACE("(%s)\n", lpszProc);
320 /* First, look if it's not already defined in the 'standard' OpenGL functions */
321 if ((local_func = GetProcAddress(opengl32_handle, lpszProc)) != NULL) {
322 TRACE(" found function in 'standard' OpenGL functions (%p)\n", local_func);
326 if (p_glXGetProcAddressARB == NULL) {
327 ERR("Warning : dynamic GL extension loading not supported by native GL library.\n");
331 /* After that, search in the thunks to find the real name of the extension */
332 ext.name = (char *) lpszProc;
333 ext_ret = (OpenGL_extension *) bsearch(&ext, extension_registry,
334 extension_registry_size, sizeof(OpenGL_extension), compar);
336 if (ext_ret == NULL) {
337 WGL_extension wgl_ext, *wgl_ext_ret;
339 /* Try to find the function in the WGL extensions ... */
340 wgl_ext.func_name = (char *) lpszProc;
341 wgl_ext_ret = (WGL_extension *) bsearch(&wgl_ext, wgl_extension_registry,
342 wgl_extension_registry_size, sizeof(WGL_extension), wgl_compar);
344 if (wgl_ext_ret == NULL) {
345 /* Some sanity checks :-) */
347 local_func = p_glXGetProcAddressARB(lpszProc);
349 if (local_func != NULL) {
350 WARN("Extension %s defined in the OpenGL library but NOT in opengl_ext.c...\n", lpszProc);
354 WARN("Did not find extension %s in either Wine or your OpenGL library.\n", lpszProc);
359 if (wgl_ext_ret->func_init != NULL) {
361 if ((err_msg = wgl_ext_ret->func_init(p_glXGetProcAddressARB,
362 wgl_ext_ret->context)) == NULL) {
363 ret = wgl_ext_ret->func_address;
365 WARN("Error when getting WGL extension '%s' : %s.\n", debugstr_a(lpszProc), err_msg);
369 ret = wgl_ext_ret->func_address;
373 TRACE(" returning WGL function (%p)\n", ret);
378 local_func = p_glXGetProcAddressARB(ext_ret->glx_name);
381 /* After that, look at the extensions defined in the Linux OpenGL library */
382 if (local_func == NULL) {
386 /* Remove the 3 last letters (EXT, ARB, ...).
388 I know that some extensions have more than 3 letters (MESA, NV,
389 INTEL, ...), but this is only a stop-gap measure to fix buggy
390 OpenGL drivers (moreover, it is only useful for old 1.0 apps
391 that query the glBindTextureEXT extension).
393 strncpy(buf, ext_ret->glx_name, strlen(ext_ret->glx_name) - 3);
394 buf[strlen(ext_ret->glx_name) - 3] = '\0';
395 TRACE(" extension not found in the Linux OpenGL library, checking against libGL bug with %s..\n", buf);
397 ret = GetProcAddress(opengl32_handle, buf);
399 TRACE(" found function in main OpenGL library (%p) !\n", ret);
401 WARN("Did not find function %s (%s) in your OpenGL library !\n", lpszProc, ext_ret->glx_name);
406 TRACE(" returning function (%p)\n", ext_ret->func);
407 *(ext_ret->func_ptr) = local_func;
409 return ext_ret->func;
414 /***********************************************************************
415 * wglMakeCurrent (OPENGL32.@)
417 BOOL WINAPI wglMakeCurrent(HDC hdc,
421 TRACE("(%p,%p)\n", hdc, hglrc);
425 ret = glXMakeCurrent(default_display, None, NULL);
427 Wine_GLContext *ctx = (Wine_GLContext *) hglrc;
428 Drawable drawable = get_drawable( hdc );
430 if (ctx->ctx == NULL) {
431 ctx->ctx = glXCreateContext(ctx->display, ctx->vis, NULL, True);
432 TRACE(" created a delayed OpenGL context (%p)\n", ctx->ctx);
434 ret = glXMakeCurrent(ctx->display, drawable, ctx->ctx);
437 TRACE(" returning %s\n", (ret ? "True" : "False"));
441 /***********************************************************************
442 * wglRealizeLayerPalette (OPENGL32.@)
444 BOOL WINAPI wglRealizeLayerPalette(HDC hdc,
452 /***********************************************************************
453 * wglSetLayerPaletteEntries (OPENGL32.@)
455 int WINAPI wglSetLayerPaletteEntries(HDC hdc,
459 const COLORREF *pcr) {
460 FIXME("(): stub !\n");
465 /***********************************************************************
466 * wglShareLists (OPENGL32.@)
468 BOOL WINAPI wglShareLists(HGLRC hglrc1,
470 Wine_GLContext *org = (Wine_GLContext *) hglrc1;
471 Wine_GLContext *dest = (Wine_GLContext *) hglrc2;
473 TRACE("(%p, %p)\n", org, dest);
475 if (dest->ctx != NULL) {
476 ERR("Could not share display lists, context already created !\n");
479 if (org->ctx == NULL) {
481 org->ctx = glXCreateContext(org->display, org->vis, NULL, True);
483 TRACE(" created a delayed OpenGL context (%p) for Wine context %p\n", org->ctx, org);
487 /* Create the destination context with display lists shared */
488 dest->ctx = glXCreateContext(org->display, dest->vis, org->ctx, True);
490 TRACE(" created a delayed OpenGL context (%p) for Wine context %p sharing lists with OpenGL ctx %p\n", dest->ctx, dest, org->ctx);
496 /***********************************************************************
497 * wglSwapLayerBuffers (OPENGL32.@)
499 BOOL WINAPI wglSwapLayerBuffers(HDC hdc,
501 TRACE("(%p, %08x)\n", hdc, fuPlanes);
503 if (fuPlanes & WGL_SWAP_MAIN_PLANE) {
504 if (!SwapBuffers(hdc)) return FALSE;
505 fuPlanes &= ~WGL_SWAP_MAIN_PLANE;
509 WARN("Following layers unhandled : %08x\n", fuPlanes);
515 static BOOL internal_wglUseFontBitmaps(HDC hdc,
519 DWORD WINAPI (*GetGlyphOutline_ptr)(HDC,UINT,UINT,LPGLYPHMETRICS,DWORD,LPVOID,const MAT2*))
521 /* We are running using client-side rendering fonts... */
525 void *bitmap = NULL, *gl_bitmap = NULL;
529 glGetIntegerv(GL_UNPACK_ALIGNMENT, &org_alignment);
530 glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
533 for (glyph = first; glyph < first + count; glyph++) {
534 unsigned int needed_size = GetGlyphOutline_ptr(hdc, glyph, GGO_BITMAP, &gm, 0, NULL, NULL);
535 int height, width_int;
537 TRACE("Glyph : %3d / List : %ld\n", glyph, listBase);
538 if (needed_size == GDI_ERROR) {
539 TRACE(" - needed size : %d (GDI_ERROR)\n", needed_size);
542 TRACE(" - needed size : %d\n", needed_size);
545 if (needed_size > size) {
547 if (bitmap) HeapFree(GetProcessHeap(), 0, bitmap);
548 if (gl_bitmap) HeapFree(GetProcessHeap(), 0, gl_bitmap);
549 bitmap = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
550 gl_bitmap = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
552 if (GetGlyphOutline_ptr(hdc, glyph, GGO_BITMAP, &gm, size, bitmap, NULL) == GDI_ERROR) goto error;
553 if (TRACE_ON(opengl)) {
554 unsigned int height, width, bitmask;
555 unsigned char *bitmap_ = (unsigned char *) bitmap;
557 TRACE(" - bbox : %d x %d\n", gm.gmBlackBoxX, gm.gmBlackBoxY);
558 TRACE(" - origin : (%ld , %ld)\n", gm.gmptGlyphOrigin.x, gm.gmptGlyphOrigin.y);
559 TRACE(" - increment : %d - %d\n", gm.gmCellIncX, gm.gmCellIncY);
560 if (needed_size != 0) {
561 TRACE(" - bitmap : \n");
562 for (height = 0; height < gm.gmBlackBoxY; height++) {
564 for (width = 0, bitmask = 0x80; width < gm.gmBlackBoxX; width++, bitmask >>= 1) {
569 if (*bitmap_ & bitmask)
574 bitmap_ += (4 - (((unsigned int) bitmap_) & 0x03));
580 /* In OpenGL, the bitmap is drawn from the bottom to the top... So we need to invert the
581 * glyph for it to be drawn properly.
583 if (needed_size != 0) {
584 width_int = (gm.gmBlackBoxX + 31) / 32;
585 for (height = 0; height < gm.gmBlackBoxY; height++) {
587 for (width = 0; width < width_int; width++) {
588 ((int *) gl_bitmap)[(gm.gmBlackBoxY - height - 1) * width_int + width] =
589 ((int *) bitmap)[height * width_int + width];
595 glNewList(listBase++, GL_COMPILE);
596 if (needed_size != 0) {
597 glBitmap(gm.gmBlackBoxX, gm.gmBlackBoxY,
598 0 - (int) gm.gmptGlyphOrigin.x, (int) gm.gmBlackBoxY - (int) gm.gmptGlyphOrigin.y,
599 gm.gmCellIncX, gm.gmCellIncY,
602 /* This is the case of 'empty' glyphs like the space character */
603 glBitmap(0, 0, 0, 0, gm.gmCellIncX, gm.gmCellIncY, NULL);
610 glPixelStorei(GL_UNPACK_ALIGNMENT, org_alignment);
613 if (bitmap) HeapFree(GetProcessHeap(), 0, bitmap);
614 if (gl_bitmap) HeapFree(GetProcessHeap(), 0, gl_bitmap);
619 glPixelStorei(GL_UNPACK_ALIGNMENT, org_alignment);
622 if (bitmap) HeapFree(GetProcessHeap(), 0, bitmap);
623 if (gl_bitmap) HeapFree(GetProcessHeap(), 0, gl_bitmap);
627 /***********************************************************************
628 * wglUseFontBitmapsA (OPENGL32.@)
630 BOOL WINAPI wglUseFontBitmapsA(HDC hdc,
635 Font fid = get_font( hdc );
637 TRACE("(%p, %ld, %ld, %ld) using font %ld\n", hdc, first, count, listBase, fid);
640 return internal_wglUseFontBitmaps(hdc, first, count, listBase, GetGlyphOutlineA);
644 /* I assume that the glyphs are at the same position for X and for Windows */
645 glXUseXFont(fid, first, count, listBase);
650 /***********************************************************************
651 * wglUseFontBitmapsW (OPENGL32.@)
653 BOOL WINAPI wglUseFontBitmapsW(HDC hdc,
658 Font fid = get_font( hdc );
660 TRACE("(%p, %ld, %ld, %ld) using font %ld\n", hdc, first, count, listBase, fid);
663 return internal_wglUseFontBitmaps(hdc, first, count, listBase, GetGlyphOutlineW);
666 WARN("Using the glX API for the WCHAR variant - some characters may come out incorrectly !\n");
669 /* I assume that the glyphs are at the same position for X and for Windows */
670 glXUseXFont(fid, first, count, listBase);
675 /***********************************************************************
676 * wglUseFontOutlinesA (OPENGL32.@)
678 BOOL WINAPI wglUseFontOutlinesA(HDC hdc,
685 LPGLYPHMETRICSFLOAT lpgmf) {
686 FIXME("(): stub !\n");
691 /* No need to load any other libraries as according to the ABI, libGL should be self-sufficient and
692 include all dependencies
695 #define SONAME_LIBGL "libGL.so"
698 /* This is for brain-dead applications that use OpenGL functions before even
699 creating a rendering context.... */
700 static BOOL process_attach(void)
702 XWindowAttributes win_attr;
705 XVisualInfo template;
707 XVisualInfo *vis = NULL;
708 Window root = (Window)GetPropA( GetDesktopWindow(), "__wine_x11_whole_window" );
709 HMODULE mod = GetModuleHandleA( "x11drv.dll" );
714 ERR("X11DRV not loaded. Cannot create default context.\n");
718 wine_tsx11_lock_ptr = (void *)GetProcAddress( mod, "wine_tsx11_lock" );
719 wine_tsx11_unlock_ptr = (void *)GetProcAddress( mod, "wine_tsx11_unlock" );
722 default_display = get_display( hdc );
724 if (!default_display)
726 ERR("X11DRV not loaded. Cannot get display for screen DC.\n");
732 /* Try to get the visual from the Root Window. We can't use the standard (presumably
733 double buffered) X11DRV visual with the Root Window, since we don't know if the Root
734 Window was created using the standard X11DRV visual, and glXMakeCurrent can't deal
735 with mismatched visuals. Note that the Root Window visual may not be double
736 buffered, so apps actually attempting to render this way may flicker */
737 if (XGetWindowAttributes( default_display, root, &win_attr ))
739 rootVisual = win_attr.visual;
743 /* Get the default visual, since we can't seem to get the attributes from the
744 Root Window. Let's hope that the Root Window Visual matches the DefaultVisual */
745 rootVisual = DefaultVisual( default_display, DefaultScreen(default_display) );
748 template.visualid = XVisualIDFromVisual(rootVisual);
749 vis = XGetVisualInfo(default_display, VisualIDMask, &template, &num);
750 if (vis != NULL) default_cx = glXCreateContext(default_display, vis, 0, GL_TRUE);
751 if (default_cx != NULL) glXMakeCurrent(default_display, root, default_cx);
755 opengl_handle = wine_dlopen(SONAME_LIBGL, RTLD_NOW|RTLD_GLOBAL, NULL, 0);
756 if (opengl_handle != NULL) {
757 p_glXGetProcAddressARB = wine_dlsym(opengl_handle, "glXGetProcAddressARB", NULL, 0);
758 wine_dlclose(opengl_handle, NULL, 0);
759 if (p_glXGetProcAddressARB == NULL)
760 TRACE("could not find glXGetProcAddressARB in libGL.\n");
763 /* Initialize also the list of supported WGL extensions. */
764 wgl_ext_initialize_extensions(default_display, DefaultScreen(default_display));
766 if (default_cx == NULL) {
767 ERR("Could not create default context.\n");
773 /**********************************************************************/
775 static void process_detach(void)
777 glXDestroyContext(default_display, default_cx);
779 /* Do not leak memory... */
780 wgl_ext_finalize_extensions();
783 /***********************************************************************
784 * OpenGL initialisation routine
786 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
790 case DLL_PROCESS_ATTACH:
791 opengl32_handle = hinst;
792 DisableThreadLibraryCalls(hinst);
793 return process_attach();
794 case DLL_PROCESS_DETACH: