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opengl32: Set last error on invalid hdc to wglCreateContextAttribsARB.
[wine.git] / dlls / opengl32 / wgl.c
blob8e6134859e4b7be85b6b3c5f0c76a149bc1eb38c
1 /* Window-specific OpenGL functions implementation.
2 *
3 * Copyright (c) 1999 Lionel Ulmer
4 * Copyright (c) 2005 Raphael Junqueira
5 *
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.
10 *
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.
15 *
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
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <stdarg.h>
25 #include <stdlib.h>
26 #include <string.h>
27
28 #include "opengl_ext.h"
29 #include "windef.h"
30 #include "winbase.h"
31 #include "winuser.h"
32 #include "winreg.h"
33 #include "wingdi.h"
34 #include "winternl.h"
35 #include "winnt.h"
36
37 #define WGL_WGLEXT_PROTOTYPES
38 #include "wine/wglext.h"
39 #include "wine/gdi_driver.h"
40 #include "wine/wgl_driver.h"
41 #include "wine/debug.h"
42
43 WINE_DEFAULT_DEBUG_CHANNEL(wgl);
44 WINE_DECLARE_DEBUG_CHANNEL(fps);
45
46 extern struct opengl_funcs null_opengl_funcs;
47
48 /* handle management */
49
50 #define MAX_WGL_HANDLES 1024
51
52 enum wgl_handle_type
53 {
54 HANDLE_PBUFFER = 0 << 12,
55 HANDLE_CONTEXT = 1 << 12,
56 HANDLE_CONTEXT_V3 = 3 << 12,
57 HANDLE_TYPE_MASK = 15 << 12
58 };
59
60 struct opengl_context
61 {
62 DWORD tid; /* thread that the context is current in */
63 HDC draw_dc; /* current drawing DC */
64 HDC read_dc; /* current reading DC */
65 GLubyte *extensions; /* extension string */
66 GLuint *disabled_exts; /* indices of disabled extensions */
67 struct wgl_context *drv_ctx; /* driver context */
68 };
69
70 struct wgl_handle
71 {
72 UINT handle;
73 struct opengl_funcs *funcs;
74 union
75 {
76 struct opengl_context *context; /* for HANDLE_CONTEXT */
77 struct wgl_pbuffer *pbuffer; /* for HANDLE_PBUFFER */
78 struct wgl_handle *next; /* for free handles */
79 } u;
80 };
81
82 static struct wgl_handle wgl_handles[MAX_WGL_HANDLES];
83 static struct wgl_handle *next_free;
84 static unsigned int handle_count;
85
86 static CRITICAL_SECTION wgl_section;
87 static CRITICAL_SECTION_DEBUG critsect_debug =
88 {
89 0, 0, &wgl_section,
90 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
91 0, 0, { (DWORD_PTR)(__FILE__ ": wgl_section") }
92 };
93 static CRITICAL_SECTION wgl_section = { &critsect_debug, -1, 0, 0, 0, 0 };
94
95 static const MAT2 identity = { {0,1},{0,0},{0,0},{0,1} };
96
97 static inline struct opengl_funcs *get_dc_funcs( HDC hdc )
98 {
99 struct opengl_funcs *funcs = __wine_get_wgl_driver( hdc, WINE_WGL_DRIVER_VERSION );
100 if (funcs == (void *)-1) funcs = &null_opengl_funcs;
101 return funcs;
102 }
103
104 static inline HANDLE next_handle( struct wgl_handle *ptr, enum wgl_handle_type type )
105 {
106 WORD generation = HIWORD( ptr->handle ) + 1;
107 if (!generation) generation++;
108 ptr->handle = MAKELONG( ptr - wgl_handles, generation ) | type;
109 return ULongToHandle( ptr->handle );
110 }
111
112 /* the current context is assumed valid and doesn't need locking */
113 static inline struct wgl_handle *get_current_context_ptr(void)
114 {
115 if (!NtCurrentTeb()->glCurrentRC) return NULL;
116 return &wgl_handles[LOWORD(NtCurrentTeb()->glCurrentRC) & ~HANDLE_TYPE_MASK];
117 }
118
119 static struct wgl_handle *get_handle_ptr( HANDLE handle, enum wgl_handle_type type )
120 {
121 unsigned int index = LOWORD( handle ) & ~HANDLE_TYPE_MASK;
122
123 EnterCriticalSection( &wgl_section );
124 if (index < handle_count && ULongToHandle(wgl_handles[index].handle) == handle)
125 return &wgl_handles[index];
126
127 LeaveCriticalSection( &wgl_section );
128 SetLastError( ERROR_INVALID_HANDLE );
129 return NULL;
130 }
131
132 static void release_handle_ptr( struct wgl_handle *ptr )
133 {
134 if (ptr) LeaveCriticalSection( &wgl_section );
135 }
136
137 static HANDLE alloc_handle( enum wgl_handle_type type, struct opengl_funcs *funcs, void *user_ptr )
138 {
139 HANDLE handle = 0;
140 struct wgl_handle *ptr = NULL;
141
142 EnterCriticalSection( &wgl_section );
143 if ((ptr = next_free))
144 next_free = next_free->u.next;
145 else if (handle_count < MAX_WGL_HANDLES)
146 ptr = &wgl_handles[handle_count++];
147
148 if (ptr)
149 {
150 ptr->funcs = funcs;
151 ptr->u.context = user_ptr;
152 handle = next_handle( ptr, type );
153 }
154 else SetLastError( ERROR_NOT_ENOUGH_MEMORY );
155 LeaveCriticalSection( &wgl_section );
156 return handle;
157 }
158
159 static void free_handle_ptr( struct wgl_handle *ptr )
160 {
161 ptr->handle |= 0xffff;
162 ptr->u.next = next_free;
163 ptr->funcs = NULL;
164 next_free = ptr;
165 LeaveCriticalSection( &wgl_section );
166 }
167
168 static inline enum wgl_handle_type get_current_context_type(void)
169 {
170 if (!NtCurrentTeb()->glCurrentRC) return HANDLE_CONTEXT;
171 return LOWORD(NtCurrentTeb()->glCurrentRC) & HANDLE_TYPE_MASK;
172 }
173
174 /***********************************************************************
175 * wglCopyContext (OPENGL32.@)
176 */
177 BOOL WINAPI wglCopyContext(HGLRC hglrcSrc, HGLRC hglrcDst, UINT mask)
178 {
179 struct wgl_handle *src, *dst;
180 BOOL ret = FALSE;
181
182 if (!(src = get_handle_ptr( hglrcSrc, HANDLE_CONTEXT ))) return FALSE;
183 if ((dst = get_handle_ptr( hglrcDst, HANDLE_CONTEXT )))
184 {
185 if (src->funcs != dst->funcs) SetLastError( ERROR_INVALID_HANDLE );
186 else ret = src->funcs->wgl.p_wglCopyContext( src->u.context->drv_ctx,
187 dst->u.context->drv_ctx, mask );
188 }
189 release_handle_ptr( dst );
190 release_handle_ptr( src );
191 return ret;
192 }
193
194 /***********************************************************************
195 * wglDeleteContext (OPENGL32.@)
196 */
197 BOOL WINAPI wglDeleteContext(HGLRC hglrc)
198 {
199 struct wgl_handle *ptr = get_handle_ptr( hglrc, HANDLE_CONTEXT );
200
201 if (!ptr) return FALSE;
202
203 if (ptr->u.context->tid && ptr->u.context->tid != GetCurrentThreadId())
204 {
205 SetLastError( ERROR_BUSY );
206 release_handle_ptr( ptr );
207 return FALSE;
208 }
209 if (hglrc == NtCurrentTeb()->glCurrentRC) wglMakeCurrent( 0, 0 );
210 ptr->funcs->wgl.p_wglDeleteContext( ptr->u.context->drv_ctx );
211 HeapFree( GetProcessHeap(), 0, ptr->u.context->disabled_exts );
212 HeapFree( GetProcessHeap(), 0, ptr->u.context->extensions );
213 HeapFree( GetProcessHeap(), 0, ptr->u.context );
214 free_handle_ptr( ptr );
215 return TRUE;
216 }
217
218 /***********************************************************************
219 * wglMakeCurrent (OPENGL32.@)
220 */
221 BOOL WINAPI wglMakeCurrent(HDC hdc, HGLRC hglrc)
222 {
223 BOOL ret = TRUE;
224 struct wgl_handle *ptr, *prev = get_current_context_ptr();
225
226 if (hglrc)
227 {
228 if (!(ptr = get_handle_ptr( hglrc, HANDLE_CONTEXT ))) return FALSE;
229 if (!ptr->u.context->tid || ptr->u.context->tid == GetCurrentThreadId())
230 {
231 ret = ptr->funcs->wgl.p_wglMakeCurrent( hdc, ptr->u.context->drv_ctx );
232 if (ret)
233 {
234 if (prev) prev->u.context->tid = 0;
235 ptr->u.context->tid = GetCurrentThreadId();
236 ptr->u.context->draw_dc = hdc;
237 ptr->u.context->read_dc = hdc;
238 NtCurrentTeb()->glCurrentRC = hglrc;
239 NtCurrentTeb()->glTable = ptr->funcs;
240 }
241 }
242 else
243 {
244 SetLastError( ERROR_BUSY );
245 ret = FALSE;
246 }
247 release_handle_ptr( ptr );
248 }
249 else if (prev)
250 {
251 if (!prev->funcs->wgl.p_wglMakeCurrent( 0, NULL )) return FALSE;
252 prev->u.context->tid = 0;
253 NtCurrentTeb()->glCurrentRC = 0;
254 NtCurrentTeb()->glTable = &null_opengl_funcs;
255 }
256 else if (!hdc)
257 {
258 SetLastError( ERROR_INVALID_HANDLE );
259 ret = FALSE;
260 }
261 return ret;
262 }
263
264 /***********************************************************************
265 * wglCreateContextAttribsARB
266 *
267 * Provided by the WGL_ARB_create_context extension.
268 */
269 HGLRC WINAPI wglCreateContextAttribsARB( HDC hdc, HGLRC share, const int *attribs )
270 {
271 HGLRC ret = 0;
272 struct wgl_context *drv_ctx;
273 struct wgl_handle *share_ptr = NULL;
274 struct opengl_context *context;
275 struct opengl_funcs *funcs = get_dc_funcs( hdc );
276
277 if (!funcs)
278 {
279 SetLastError( ERROR_DC_NOT_FOUND );
280 return 0;
281 }
282 if (!funcs->ext.p_wglCreateContextAttribsARB) return 0;
283 if (share && !(share_ptr = get_handle_ptr( share, HANDLE_CONTEXT ))) return 0;
284 if ((drv_ctx = funcs->ext.p_wglCreateContextAttribsARB( hdc,
285 share_ptr ? share_ptr->u.context->drv_ctx : NULL, attribs )))
286 {
287 if ((context = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*context) )))
288 {
289 enum wgl_handle_type type = HANDLE_CONTEXT;
290
291 if (attribs)
292 {
293 while (*attribs)
294 {
295 if (attribs[0] == WGL_CONTEXT_MAJOR_VERSION_ARB)
296 {
297 if (attribs[1] >= 3)
298 type = HANDLE_CONTEXT_V3;
299 break;
300 }
301 attribs += 2;
302 }
303 }
304
305 context->drv_ctx = drv_ctx;
306 if (!(ret = alloc_handle( type, funcs, context )))
307 HeapFree( GetProcessHeap(), 0, context );
308 }
309 if (!ret) funcs->wgl.p_wglDeleteContext( drv_ctx );
310 }
311 release_handle_ptr( share_ptr );
312 return ret;
313
314 }
315
316 /***********************************************************************
317 * wglMakeContextCurrentARB
318 *
319 * Provided by the WGL_ARB_make_current_read extension.
320 */
321 BOOL WINAPI wglMakeContextCurrentARB( HDC draw_hdc, HDC read_hdc, HGLRC hglrc )
322 {
323 BOOL ret = TRUE;
324 struct wgl_handle *ptr, *prev = get_current_context_ptr();
325
326 if (hglrc)
327 {
328 if (!(ptr = get_handle_ptr( hglrc, HANDLE_CONTEXT ))) return FALSE;
329 if (!ptr->u.context->tid || ptr->u.context->tid == GetCurrentThreadId())
330 {
331 ret = (ptr->funcs->ext.p_wglMakeContextCurrentARB &&
332 ptr->funcs->ext.p_wglMakeContextCurrentARB( draw_hdc, read_hdc,
333 ptr->u.context->drv_ctx ));
334 if (ret)
335 {
336 if (prev) prev->u.context->tid = 0;
337 ptr->u.context->tid = GetCurrentThreadId();
338 ptr->u.context->draw_dc = draw_hdc;
339 ptr->u.context->read_dc = read_hdc;
340 NtCurrentTeb()->glCurrentRC = hglrc;
341 NtCurrentTeb()->glTable = ptr->funcs;
342 }
343 }
344 else
345 {
346 SetLastError( ERROR_BUSY );
347 ret = FALSE;
348 }
349 release_handle_ptr( ptr );
350 }
351 else if (prev)
352 {
353 if (!prev->funcs->wgl.p_wglMakeCurrent( 0, NULL )) return FALSE;
354 prev->u.context->tid = 0;
355 NtCurrentTeb()->glCurrentRC = 0;
356 NtCurrentTeb()->glTable = &null_opengl_funcs;
357 }
358 return ret;
359 }
360
361 /***********************************************************************
362 * wglGetCurrentReadDCARB
363 *
364 * Provided by the WGL_ARB_make_current_read extension.
365 */
366 HDC WINAPI wglGetCurrentReadDCARB(void)
367 {
368 struct wgl_handle *ptr = get_current_context_ptr();
369
370 if (!ptr) return 0;
371 return ptr->u.context->read_dc;
372 }
373
374 /***********************************************************************
375 * wglShareLists (OPENGL32.@)
376 */
377 BOOL WINAPI wglShareLists(HGLRC hglrcSrc, HGLRC hglrcDst)
378 {
379 BOOL ret = FALSE;
380 struct wgl_handle *src, *dst;
381
382 if (!(src = get_handle_ptr( hglrcSrc, HANDLE_CONTEXT ))) return FALSE;
383 if ((dst = get_handle_ptr( hglrcDst, HANDLE_CONTEXT )))
384 {
385 if (src->funcs != dst->funcs) SetLastError( ERROR_INVALID_HANDLE );
386 else ret = src->funcs->wgl.p_wglShareLists( src->u.context->drv_ctx, dst->u.context->drv_ctx );
387 }
388 release_handle_ptr( dst );
389 release_handle_ptr( src );
390 return ret;
391 }
392
393 /***********************************************************************
394 * wglGetCurrentDC (OPENGL32.@)
395 */
396 HDC WINAPI wglGetCurrentDC(void)
397 {
398 struct wgl_handle *ptr = get_current_context_ptr();
399
400 if (!ptr) return 0;
401 return ptr->u.context->draw_dc;
402 }
403
404 /***********************************************************************
405 * wglCreateContext (OPENGL32.@)
406 */
407 HGLRC WINAPI wglCreateContext(HDC hdc)
408 {
409 HGLRC ret = 0;
410 struct wgl_context *drv_ctx;
411 struct opengl_context *context;
412 struct opengl_funcs *funcs = get_dc_funcs( hdc );
413
414 if (!funcs) return 0;
415 if (!(drv_ctx = funcs->wgl.p_wglCreateContext( hdc ))) return 0;
416 if ((context = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*context) )))
417 {
418 context->drv_ctx = drv_ctx;
419 if (!(ret = alloc_handle( HANDLE_CONTEXT, funcs, context )))
420 HeapFree( GetProcessHeap(), 0, context );
421 }
422 if (!ret) funcs->wgl.p_wglDeleteContext( drv_ctx );
423 return ret;
424 }
425
426 /***********************************************************************
427 * wglGetCurrentContext (OPENGL32.@)
428 */
429 HGLRC WINAPI wglGetCurrentContext(void)
430 {
431 return NtCurrentTeb()->glCurrentRC;
432 }
433
434 /***********************************************************************
435 * wglDescribePixelFormat (OPENGL32.@)
436 */
437 INT WINAPI wglDescribePixelFormat(HDC hdc, INT format, UINT size, PIXELFORMATDESCRIPTOR *descr )
438 {
439 struct opengl_funcs *funcs = get_dc_funcs( hdc );
440 if (!funcs) return 0;
441 return funcs->wgl.p_wglDescribePixelFormat( hdc, format, size, descr );
442 }
443
444 /***********************************************************************
445 * wglChoosePixelFormat (OPENGL32.@)
446 */
447 INT WINAPI wglChoosePixelFormat(HDC hdc, const PIXELFORMATDESCRIPTOR* ppfd)
448 {
449 PIXELFORMATDESCRIPTOR format, best;
450 int i, count, best_format;
451 int bestDBuffer = -1, bestStereo = -1;
452
453 TRACE_(wgl)( "%p %p: size %u version %u flags %u type %u color %u %u,%u,%u,%u "
454 "accum %u depth %u stencil %u aux %u\n",
455 hdc, ppfd, ppfd->nSize, ppfd->nVersion, ppfd->dwFlags, ppfd->iPixelType,
456 ppfd->cColorBits, ppfd->cRedBits, ppfd->cGreenBits, ppfd->cBlueBits, ppfd->cAlphaBits,
457 ppfd->cAccumBits, ppfd->cDepthBits, ppfd->cStencilBits, ppfd->cAuxBuffers );
458
459 count = wglDescribePixelFormat( hdc, 0, 0, NULL );
460 if (!count) return 0;
461
462 best_format = 0;
463 best.dwFlags = 0;
464 best.cAlphaBits = -1;
465 best.cColorBits = -1;
466 best.cDepthBits = -1;
467 best.cStencilBits = -1;
468 best.cAuxBuffers = -1;
469
470 for (i = 1; i <= count; i++)
471 {
472 if (!wglDescribePixelFormat( hdc, i, sizeof(format), &format )) continue;
473
474 if (ppfd->iPixelType != format.iPixelType)
475 {
476 TRACE( "pixel type mismatch for iPixelFormat=%d\n", i );
477 continue;
478 }
479
480 /* only use bitmap capable for formats for bitmap rendering */
481 if( (ppfd->dwFlags & PFD_DRAW_TO_BITMAP) != (format.dwFlags & PFD_DRAW_TO_BITMAP))
482 {
483 TRACE( "PFD_DRAW_TO_BITMAP mismatch for iPixelFormat=%d\n", i );
484 continue;
485 }
486
487 /* The behavior of PDF_STEREO/PFD_STEREO_DONTCARE and PFD_DOUBLEBUFFER / PFD_DOUBLEBUFFER_DONTCARE
488 * is not very clear on MSDN. They specify that ChoosePixelFormat tries to match pixel formats
489 * with the flag (PFD_STEREO / PFD_DOUBLEBUFFERING) set. Otherwise it says that it tries to match
490 * formats without the given flag set.
491 * A test on Windows using a Radeon 9500pro on WinXP (the driver doesn't support Stereo)
492 * has indicated that a format without stereo is returned when stereo is unavailable.
493 * So in case PFD_STEREO is set, formats that support it should have priority above formats
494 * without. In case PFD_STEREO_DONTCARE is set, stereo is ignored.
495 *
496 * To summarize the following is most likely the correct behavior:
497 * stereo not set -> prefer non-stereo formats, but also accept stereo formats
498 * stereo set -> prefer stereo formats, but also accept non-stereo formats
499 * stereo don't care -> it doesn't matter whether we get stereo or not
500 *
501 * In Wine we will treat non-stereo the same way as don't care because it makes
502 * format selection even more complicated and second drivers with Stereo advertise
503 * each format twice anyway.
504 */
505
506 /* Doublebuffer, see the comments above */
507 if (!(ppfd->dwFlags & PFD_DOUBLEBUFFER_DONTCARE))
508 {
509 if (((ppfd->dwFlags & PFD_DOUBLEBUFFER) != bestDBuffer) &&
510 ((format.dwFlags & PFD_DOUBLEBUFFER) == (ppfd->dwFlags & PFD_DOUBLEBUFFER)))
511 goto found;
512
513 if (bestDBuffer != -1 && (format.dwFlags & PFD_DOUBLEBUFFER) != bestDBuffer) continue;
514 }
515
516 /* Stereo, see the comments above. */
517 if (!(ppfd->dwFlags & PFD_STEREO_DONTCARE))
518 {
519 if (((ppfd->dwFlags & PFD_STEREO) != bestStereo) &&
520 ((format.dwFlags & PFD_STEREO) == (ppfd->dwFlags & PFD_STEREO)))
521 goto found;
522
523 if (bestStereo != -1 && (format.dwFlags & PFD_STEREO) != bestStereo) continue;
524 }
525
526 /* Below we will do a number of checks to select the 'best' pixelformat.
527 * We assume the precedence cColorBits > cAlphaBits > cDepthBits > cStencilBits -> cAuxBuffers.
528 * The code works by trying to match the most important options as close as possible.
529 * When a reasonable format is found, we will try to match more options.
530 * It appears (see the opengl32 test) that Windows opengl drivers ignore options
531 * like cColorBits, cAlphaBits and friends if they are set to 0, so they are considered
532 * as DONTCARE. At least Serious Sam TSE relies on this behavior. */
533
534 if (ppfd->cColorBits)
535 {
536 if (((ppfd->cColorBits > best.cColorBits) && (format.cColorBits > best.cColorBits)) ||
537 ((format.cColorBits >= ppfd->cColorBits) && (format.cColorBits < best.cColorBits)))
538 goto found;
539
540 if (best.cColorBits != format.cColorBits) /* Do further checks if the format is compatible */
541 {
542 TRACE( "color mismatch for iPixelFormat=%d\n", i );
543 continue;
544 }
545 }
546 if (ppfd->cAlphaBits)
547 {
548 if (((ppfd->cAlphaBits > best.cAlphaBits) && (format.cAlphaBits > best.cAlphaBits)) ||
549 ((format.cAlphaBits >= ppfd->cAlphaBits) && (format.cAlphaBits < best.cAlphaBits)))
550 goto found;
551
552 if (best.cAlphaBits != format.cAlphaBits)
553 {
554 TRACE( "alpha mismatch for iPixelFormat=%d\n", i );
555 continue;
556 }
557 }
558 if (ppfd->cDepthBits)
559 {
560 if (((ppfd->cDepthBits > best.cDepthBits) && (format.cDepthBits > best.cDepthBits)) ||
561 ((format.cDepthBits >= ppfd->cDepthBits) && (format.cDepthBits < best.cDepthBits)))
562 goto found;
563
564 if (best.cDepthBits != format.cDepthBits)
565 {
566 TRACE( "depth mismatch for iPixelFormat=%d\n", i );
567 continue;
568 }
569 }
570 if (ppfd->cStencilBits)
571 {
572 if (((ppfd->cStencilBits > best.cStencilBits) && (format.cStencilBits > best.cStencilBits)) ||
573 ((format.cStencilBits >= ppfd->cStencilBits) && (format.cStencilBits < best.cStencilBits)))
574 goto found;
575
576 if (best.cStencilBits != format.cStencilBits)
577 {
578 TRACE( "stencil mismatch for iPixelFormat=%d\n", i );
579 continue;
580 }
581 }
582 if (ppfd->cAuxBuffers)
583 {
584 if (((ppfd->cAuxBuffers > best.cAuxBuffers) && (format.cAuxBuffers > best.cAuxBuffers)) ||
585 ((format.cAuxBuffers >= ppfd->cAuxBuffers) && (format.cAuxBuffers < best.cAuxBuffers)))
586 goto found;
587
588 if (best.cAuxBuffers != format.cAuxBuffers)
589 {
590 TRACE( "aux mismatch for iPixelFormat=%d\n", i );
591 continue;
592 }
593 }
594 continue;
595
596 found:
597 best_format = i;
598 best = format;
599 bestDBuffer = format.dwFlags & PFD_DOUBLEBUFFER;
600 bestStereo = format.dwFlags & PFD_STEREO;
601 }
602
603 TRACE( "returning %u\n", best_format );
604 return best_format;
605 }
606
607 /***********************************************************************
608 * wglGetPixelFormat (OPENGL32.@)
609 */
610 INT WINAPI wglGetPixelFormat(HDC hdc)
611 {
612 struct opengl_funcs *funcs = get_dc_funcs( hdc );
613 if (!funcs) return 0;
614 return funcs->wgl.p_wglGetPixelFormat( hdc );
615 }
616
617 /***********************************************************************
618 * wglSetPixelFormat(OPENGL32.@)
619 */
620 BOOL WINAPI wglSetPixelFormat( HDC hdc, INT format, const PIXELFORMATDESCRIPTOR *descr )
621 {
622 struct opengl_funcs *funcs = get_dc_funcs( hdc );
623 if (!funcs) return FALSE;
624 return funcs->wgl.p_wglSetPixelFormat( hdc, format, descr );
625 }
626
627 /***********************************************************************
628 * wglSwapBuffers (OPENGL32.@)
629 */
630 BOOL WINAPI DECLSPEC_HOTPATCH wglSwapBuffers( HDC hdc )
631 {
632 const struct opengl_funcs *funcs = get_dc_funcs( hdc );
633
634 if (!funcs || !funcs->wgl.p_wglSwapBuffers) return FALSE;
635 if (!funcs->wgl.p_wglSwapBuffers( hdc )) return FALSE;
636
637 if (TRACE_ON(fps))
638 {
639 static long prev_time, start_time;
640 static unsigned long frames, frames_total;
641
642 DWORD time = GetTickCount();
643 frames++;
644 frames_total++;
645 /* every 1.5 seconds */
646 if (time - prev_time > 1500)
647 {
648 TRACE_(fps)("@ approx %.2ffps, total %.2ffps\n",
649 1000.0*frames/(time - prev_time), 1000.0*frames_total/(time - start_time));
650 prev_time = time;
651 frames = 0;
652 if (start_time == 0) start_time = time;
653 }
654 }
655 return TRUE;
656 }
657
658 /***********************************************************************
659 * wglCreateLayerContext (OPENGL32.@)
660 */
661 HGLRC WINAPI wglCreateLayerContext(HDC hdc,
662 int iLayerPlane) {
663 TRACE("(%p,%d)\n", hdc, iLayerPlane);
664
665 if (iLayerPlane == 0) {
666 return wglCreateContext(hdc);
667 }
668 FIXME("no handler for layer %d\n", iLayerPlane);
669
670 return NULL;
671 }
672
673 /***********************************************************************
674 * wglDescribeLayerPlane (OPENGL32.@)
675 */
676 BOOL WINAPI wglDescribeLayerPlane(HDC hdc,
677 int iPixelFormat,
678 int iLayerPlane,
679 UINT nBytes,
680 LPLAYERPLANEDESCRIPTOR plpd) {
681 FIXME("(%p,%d,%d,%d,%p)\n", hdc, iPixelFormat, iLayerPlane, nBytes, plpd);
682
683 return FALSE;
684 }
685
686 /***********************************************************************
687 * wglGetLayerPaletteEntries (OPENGL32.@)
688 */
689 int WINAPI wglGetLayerPaletteEntries(HDC hdc,
690 int iLayerPlane,
691 int iStart,
692 int cEntries,
693 const COLORREF *pcr) {
694 FIXME("(): stub!\n");
695
696 return 0;
697 }
698
699 static BOOL filter_extensions(const char *extensions, GLubyte **exts_list, GLuint **disabled_exts);
700
701 void WINAPI glGetIntegerv(GLenum pname, GLint *data)
702 {
703 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
704
705 TRACE("(%d, %p)\n", pname, data);
706 if (pname == GL_NUM_EXTENSIONS)
707 {
708 struct wgl_handle *ptr = get_current_context_ptr();
709
710 if (ptr->u.context->disabled_exts ||
711 filter_extensions(NULL, NULL, &ptr->u.context->disabled_exts))
712 {
713 const GLuint *disabled_exts = ptr->u.context->disabled_exts;
714 GLint count, disabled_count = 0;
715
716 funcs->gl.p_glGetIntegerv(pname, &count);
717 while (*disabled_exts++ != ~0u)
718 disabled_count++;
719 *data = count - disabled_count;
720 return;
721 }
722 }
723 funcs->gl.p_glGetIntegerv(pname, data);
724 }
725
726 const GLubyte * WINAPI glGetStringi(GLenum name, GLuint index)
727 {
728 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
729
730 TRACE("(%d, %d)\n", name, index);
731 if (!funcs->ext.p_glGetStringi)
732 {
733 void **func_ptr = (void **)&funcs->ext.p_glGetStringi;
734
735 *func_ptr = funcs->wgl.p_wglGetProcAddress("glGetStringi");
736 }
737
738 if (name == GL_EXTENSIONS)
739 {
740 struct wgl_handle *ptr = get_current_context_ptr();
741
742 if (ptr->u.context->disabled_exts ||
743 filter_extensions(NULL, NULL, &ptr->u.context->disabled_exts))
744 {
745 const GLuint *disabled_exts = ptr->u.context->disabled_exts;
746 unsigned int disabled_count = 0;
747
748 while (index + disabled_count >= *disabled_exts++)
749 disabled_count++;
750 return funcs->ext.p_glGetStringi(name, index + disabled_count);
751 }
752 }
753 return funcs->ext.p_glGetStringi(name, index);
754 }
755
756 /* check if the extension is present in the list */
757 static BOOL has_extension( const char *list, const char *ext, size_t len )
758 {
759 if (!list)
760 {
761 const char *gl_ext;
762 unsigned int i;
763 GLint extensions_count;
764
765 glGetIntegerv(GL_NUM_EXTENSIONS, &extensions_count);
766 for (i = 0; i < extensions_count; ++i)
767 {
768 gl_ext = (const char *)glGetStringi(GL_EXTENSIONS, i);
769 if (!strncmp(gl_ext, ext, len) && !gl_ext[len])
770 return TRUE;
771 }
772 return FALSE;
773 }
774
775 while (list)
776 {
777 while (*list == ' ') list++;
778 if (!strncmp( list, ext, len ) && (!list[len] || list[len] == ' ')) return TRUE;
779 list = strchr( list, ' ' );
780 }
781 return FALSE;
782 }
783
784 static int compar(const void *elt_a, const void *elt_b) {
785 return strcmp(((const OpenGL_extension *) elt_a)->name,
786 ((const OpenGL_extension *) elt_b)->name);
787 }
788
789 /* Check if a GL extension is supported */
790 static BOOL is_extension_supported(const char* extension)
791 {
792 enum wgl_handle_type type = get_current_context_type();
793 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
794 const char *gl_ext_string = NULL;
795 size_t len;
796
797 TRACE("Checking for extension '%s'\n", extension);
798
799 if (type == HANDLE_CONTEXT)
800 {
801 gl_ext_string = (const char*)glGetString(GL_EXTENSIONS);
802 if (!gl_ext_string)
803 {
804 ERR("No OpenGL extensions found, check if your OpenGL setup is correct!\n");
805 return FALSE;
806 }
807 }
808
809 /* We use the GetProcAddress function from the display driver to retrieve function pointers
810 * for OpenGL and WGL extensions. In case of winex11.drv the OpenGL extension lookup is done
811 * using glXGetProcAddress. This function is quite unreliable in the sense that its specs don't
812 * require the function to return NULL when an extension isn't found. For this reason we check
813 * if the OpenGL extension required for the function we are looking up is supported. */
814
815 while ((len = strcspn(extension, " ")) != 0)
816 {
817 /* Check if the extension is part of the GL extension string to see if it is supported. */
818 if (has_extension(gl_ext_string, extension, len))
819 return TRUE;
820
821 /* In general an OpenGL function starts as an ARB/EXT extension and at some stage
822 * it becomes part of the core OpenGL library and can be reached without the ARB/EXT
823 * suffix as well. In the extension table, these functions contain GL_VERSION_major_minor.
824 * Check if we are searching for a core GL function */
825 if(strncmp(extension, "GL_VERSION_", 11) == 0)
826 {
827 const GLubyte *gl_version = funcs->gl.p_glGetString(GL_VERSION);
828 const char *version = extension + 11; /* Move past 'GL_VERSION_' */
829
830 if(!gl_version) {
831 ERR("No OpenGL version found!\n");
832 return FALSE;
833 }
834
835 /* Compare the major/minor version numbers of the native OpenGL library and what is required by the function.
836 * The gl_version string is guaranteed to have at least a major/minor and sometimes it has a release number as well. */
837 if( (gl_version[0] > version[0]) || ((gl_version[0] == version[0]) && (gl_version[2] >= version[2])) ) {
838 return TRUE;
839 }
840 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]);
841 }
842
843 if (extension[len] == ' ') len++;
844 extension += len;
845 }
846
847 return FALSE;
848 }
849
850 /***********************************************************************
851 * wglGetProcAddress (OPENGL32.@)
852 */
853 PROC WINAPI wglGetProcAddress( LPCSTR name )
854 {
855 struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
856 void **func_ptr;
857 OpenGL_extension ext;
858 const OpenGL_extension *ext_ret;
859
860 if (!name) return NULL;
861
862 /* Without an active context opengl32 doesn't know to what
863 * driver it has to dispatch wglGetProcAddress.
864 */
865 if (!get_current_context_ptr())
866 {
867 WARN("No active WGL context found\n");
868 return NULL;
869 }
870
871 ext.name = name;
872 ext_ret = bsearch(&ext, extension_registry, extension_registry_size, sizeof(ext), compar);
873 if (!ext_ret)
874 {
875 WARN("Function %s unknown\n", name);
876 return NULL;
877 }
878
879 func_ptr = (void **)&funcs->ext + (ext_ret - extension_registry);
880 if (!*func_ptr)
881 {
882 void *driver_func = funcs->wgl.p_wglGetProcAddress( name );
883
884 if (!is_extension_supported(ext_ret->extension))
885 {
886 unsigned int i;
887 static const struct { const char *name, *alt; } alternatives[] =
888 {
889 { "glCopyTexSubImage3DEXT", "glCopyTexSubImage3D" }, /* needed by RuneScape */
890 { "glVertexAttribDivisor", "glVertexAttribDivisorARB"}, /* needed by Caffeine */
891 };
892
893 for (i = 0; i < sizeof(alternatives)/sizeof(alternatives[0]); i++)
894 {
895 if (strcmp( name, alternatives[i].name )) continue;
896 WARN("Extension %s required for %s not supported, trying %s\n",
897 ext_ret->extension, name, alternatives[i].alt );
898 return wglGetProcAddress( alternatives[i].alt );
899 }
900 WARN("Extension %s required for %s not supported\n", ext_ret->extension, name);
901 return NULL;
902 }
903
904 if (driver_func == NULL)
905 {
906 WARN("Function %s not supported by driver\n", name);
907 return NULL;
908 }
909 *func_ptr = driver_func;
910 }
911
912 TRACE("returning %s -> %p\n", name, ext_ret->func);
913 return ext_ret->func;
914 }
915
916 /***********************************************************************
917 * wglRealizeLayerPalette (OPENGL32.@)
918 */
919 BOOL WINAPI wglRealizeLayerPalette(HDC hdc,
920 int iLayerPlane,
921 BOOL bRealize) {
922 FIXME("()\n");
923
924 return FALSE;
925 }
926
927 /***********************************************************************
928 * wglSetLayerPaletteEntries (OPENGL32.@)
929 */
930 int WINAPI wglSetLayerPaletteEntries(HDC hdc,
931 int iLayerPlane,
932 int iStart,
933 int cEntries,
934 const COLORREF *pcr) {
935 FIXME("(): stub!\n");
936
937 return 0;
938 }
939
940 /***********************************************************************
941 * wglSwapLayerBuffers (OPENGL32.@)
942 */
943 BOOL WINAPI wglSwapLayerBuffers(HDC hdc,
944 UINT fuPlanes) {
945 TRACE("(%p, %08x)\n", hdc, fuPlanes);
946
947 if (fuPlanes & WGL_SWAP_MAIN_PLANE) {
948 if (!wglSwapBuffers( hdc )) return FALSE;
949 fuPlanes &= ~WGL_SWAP_MAIN_PLANE;
950 }
951
952 if (fuPlanes) {
953 WARN("Following layers unhandled: %08x\n", fuPlanes);
954 }
955
956 return TRUE;
957 }
958
959 /***********************************************************************
960 * wglAllocateMemoryNV
961 *
962 * Provided by the WGL_NV_vertex_array_range extension.
963 */
964 void * WINAPI wglAllocateMemoryNV( GLsizei size, GLfloat readfreq, GLfloat writefreq, GLfloat priority )
965 {
966 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
967
968 if (!funcs->ext.p_wglAllocateMemoryNV) return NULL;
969 return funcs->ext.p_wglAllocateMemoryNV( size, readfreq, writefreq, priority );
970 }
971
972 /***********************************************************************
973 * wglFreeMemoryNV
974 *
975 * Provided by the WGL_NV_vertex_array_range extension.
976 */
977 void WINAPI wglFreeMemoryNV( void *pointer )
978 {
979 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
980
981 if (funcs->ext.p_wglFreeMemoryNV) funcs->ext.p_wglFreeMemoryNV( pointer );
982 }
983
984 /***********************************************************************
985 * wglBindTexImageARB
986 *
987 * Provided by the WGL_ARB_render_texture extension.
988 */
989 BOOL WINAPI wglBindTexImageARB( HPBUFFERARB handle, int buffer )
990 {
991 struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER );
992 BOOL ret;
993
994 if (!ptr) return FALSE;
995 ret = ptr->funcs->ext.p_wglBindTexImageARB( ptr->u.pbuffer, buffer );
996 release_handle_ptr( ptr );
997 return ret;
998 }
999
1000 /***********************************************************************
1001 * wglReleaseTexImageARB
1002 *
1003 * Provided by the WGL_ARB_render_texture extension.
1004 */
1005 BOOL WINAPI wglReleaseTexImageARB( HPBUFFERARB handle, int buffer )
1006 {
1007 struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER );
1008 BOOL ret;
1009
1010 if (!ptr) return FALSE;
1011 ret = ptr->funcs->ext.p_wglReleaseTexImageARB( ptr->u.pbuffer, buffer );
1012 release_handle_ptr( ptr );
1013 return ret;
1014 }
1015
1016 /***********************************************************************
1017 * wglSetPbufferAttribARB
1018 *
1019 * Provided by the WGL_ARB_render_texture extension.
1020 */
1021 BOOL WINAPI wglSetPbufferAttribARB( HPBUFFERARB handle, const int *attribs )
1022 {
1023 struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER );
1024 BOOL ret;
1025
1026 if (!ptr) return FALSE;
1027 ret = ptr->funcs->ext.p_wglSetPbufferAttribARB( ptr->u.pbuffer, attribs );
1028 release_handle_ptr( ptr );
1029 return ret;
1030 }
1031
1032 /***********************************************************************
1033 * wglChoosePixelFormatARB
1034 *
1035 * Provided by the WGL_ARB_pixel_format extension.
1036 */
1037 BOOL WINAPI wglChoosePixelFormatARB( HDC hdc, const int *iattribs, const FLOAT *fattribs,
1038 UINT max, int *formats, UINT *count )
1039 {
1040 const struct opengl_funcs *funcs = get_dc_funcs( hdc );
1041
1042 if (!funcs || !funcs->ext.p_wglChoosePixelFormatARB) return FALSE;
1043 return funcs->ext.p_wglChoosePixelFormatARB( hdc, iattribs, fattribs, max, formats, count );
1044 }
1045
1046 /***********************************************************************
1047 * wglGetPixelFormatAttribivARB
1048 *
1049 * Provided by the WGL_ARB_pixel_format extension.
1050 */
1051 BOOL WINAPI wglGetPixelFormatAttribivARB( HDC hdc, int format, int layer, UINT count, const int *attribs,
1052 int *values )
1053 {
1054 const struct opengl_funcs *funcs = get_dc_funcs( hdc );
1055
1056 if (!funcs || !funcs->ext.p_wglGetPixelFormatAttribivARB) return FALSE;
1057 return funcs->ext.p_wglGetPixelFormatAttribivARB( hdc, format, layer, count, attribs, values );
1058 }
1059
1060 /***********************************************************************
1061 * wglGetPixelFormatAttribfvARB
1062 *
1063 * Provided by the WGL_ARB_pixel_format extension.
1064 */
1065 BOOL WINAPI wglGetPixelFormatAttribfvARB( HDC hdc, int format, int layer, UINT count, const int *attribs,
1066 FLOAT *values )
1067 {
1068 const struct opengl_funcs *funcs = get_dc_funcs( hdc );
1069
1070 if (!funcs || !funcs->ext.p_wglGetPixelFormatAttribfvARB) return FALSE;
1071 return funcs->ext.p_wglGetPixelFormatAttribfvARB( hdc, format, layer, count, attribs, values );
1072 }
1073
1074 /***********************************************************************
1075 * wglCreatePbufferARB
1076 *
1077 * Provided by the WGL_ARB_pbuffer extension.
1078 */
1079 HPBUFFERARB WINAPI wglCreatePbufferARB( HDC hdc, int format, int width, int height, const int *attribs )
1080 {
1081 HPBUFFERARB ret;
1082 struct wgl_pbuffer *pbuffer;
1083 struct opengl_funcs *funcs = get_dc_funcs( hdc );
1084
1085 if (!funcs || !funcs->ext.p_wglCreatePbufferARB) return 0;
1086 if (!(pbuffer = funcs->ext.p_wglCreatePbufferARB( hdc, format, width, height, attribs ))) return 0;
1087 ret = alloc_handle( HANDLE_PBUFFER, funcs, pbuffer );
1088 if (!ret) funcs->ext.p_wglDestroyPbufferARB( pbuffer );
1089 return ret;
1090 }
1091
1092 /***********************************************************************
1093 * wglGetPbufferDCARB
1094 *
1095 * Provided by the WGL_ARB_pbuffer extension.
1096 */
1097 HDC WINAPI wglGetPbufferDCARB( HPBUFFERARB handle )
1098 {
1099 struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER );
1100 HDC ret;
1101
1102 if (!ptr) return 0;
1103 ret = ptr->funcs->ext.p_wglGetPbufferDCARB( ptr->u.pbuffer );
1104 release_handle_ptr( ptr );
1105 return ret;
1106 }
1107
1108 /***********************************************************************
1109 * wglReleasePbufferDCARB
1110 *
1111 * Provided by the WGL_ARB_pbuffer extension.
1112 */
1113 int WINAPI wglReleasePbufferDCARB( HPBUFFERARB handle, HDC hdc )
1114 {
1115 struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER );
1116 BOOL ret;
1117
1118 if (!ptr) return FALSE;
1119 ret = ptr->funcs->ext.p_wglReleasePbufferDCARB( ptr->u.pbuffer, hdc );
1120 release_handle_ptr( ptr );
1121 return ret;
1122 }
1123
1124 /***********************************************************************
1125 * wglDestroyPbufferARB
1126 *
1127 * Provided by the WGL_ARB_pbuffer extension.
1128 */
1129 BOOL WINAPI wglDestroyPbufferARB( HPBUFFERARB handle )
1130 {
1131 struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER );
1132
1133 if (!ptr) return FALSE;
1134 ptr->funcs->ext.p_wglDestroyPbufferARB( ptr->u.pbuffer );
1135 free_handle_ptr( ptr );
1136 return TRUE;
1137 }
1138
1139 /***********************************************************************
1140 * wglQueryPbufferARB
1141 *
1142 * Provided by the WGL_ARB_pbuffer extension.
1143 */
1144 BOOL WINAPI wglQueryPbufferARB( HPBUFFERARB handle, int attrib, int *value )
1145 {
1146 struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER );
1147 BOOL ret;
1148
1149 if (!ptr) return FALSE;
1150 ret = ptr->funcs->ext.p_wglQueryPbufferARB( ptr->u.pbuffer, attrib, value );
1151 release_handle_ptr( ptr );
1152 return ret;
1153 }
1154
1155 /***********************************************************************
1156 * wglGetExtensionsStringARB
1157 *
1158 * Provided by the WGL_ARB_extensions_string extension.
1159 */
1160 const char * WINAPI wglGetExtensionsStringARB( HDC hdc )
1161 {
1162 const struct opengl_funcs *funcs = get_dc_funcs( hdc );
1163
1164 if (!funcs || !funcs->ext.p_wglGetExtensionsStringARB) return NULL;
1165 return (const char *)funcs->ext.p_wglGetExtensionsStringARB( hdc );
1166 }
1167
1168 /***********************************************************************
1169 * wglGetExtensionsStringEXT
1170 *
1171 * Provided by the WGL_EXT_extensions_string extension.
1172 */
1173 const char * WINAPI wglGetExtensionsStringEXT(void)
1174 {
1175 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1176
1177 if (!funcs->ext.p_wglGetExtensionsStringEXT) return NULL;
1178 return (const char *)funcs->ext.p_wglGetExtensionsStringEXT();
1179 }
1180
1181 /***********************************************************************
1182 * wglSwapIntervalEXT
1183 *
1184 * Provided by the WGL_EXT_swap_control extension.
1185 */
1186 BOOL WINAPI wglSwapIntervalEXT( int interval )
1187 {
1188 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1189
1190 if (!funcs->ext.p_wglSwapIntervalEXT) return FALSE;
1191 return funcs->ext.p_wglSwapIntervalEXT( interval );
1192 }
1193
1194 /***********************************************************************
1195 * wglGetSwapIntervalEXT
1196 *
1197 * Provided by the WGL_EXT_swap_control extension.
1198 */
1199 int WINAPI wglGetSwapIntervalEXT(void)
1200 {
1201 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1202
1203 if (!funcs->ext.p_wglGetSwapIntervalEXT) return FALSE;
1204 return funcs->ext.p_wglGetSwapIntervalEXT();
1205 }
1206
1207 /***********************************************************************
1208 * wglSetPixelFormatWINE
1209 *
1210 * Provided by the WGL_WINE_pixel_format_passthrough extension.
1211 */
1212 BOOL WINAPI wglSetPixelFormatWINE( HDC hdc, int format )
1213 {
1214 const struct opengl_funcs *funcs = get_dc_funcs( hdc );
1215
1216 if (!funcs || !funcs->ext.p_wglSetPixelFormatWINE) return FALSE;
1217 return funcs->ext.p_wglSetPixelFormatWINE( hdc, format );
1218 }
1219
1220 /***********************************************************************
1221 * wglQueryCurrentRendererIntegerWINE
1222 *
1223 * Provided by the WGL_WINE_query_renderer extension.
1224 */
1225 BOOL WINAPI wglQueryCurrentRendererIntegerWINE( GLenum attribute, GLuint *value )
1226 {
1227 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1228
1229 if (!funcs->ext.p_wglQueryCurrentRendererIntegerWINE) return FALSE;
1230 return funcs->ext.p_wglQueryCurrentRendererIntegerWINE( attribute, value );
1231 }
1232
1233 /***********************************************************************
1234 * wglQueryCurrentRendererStringWINE
1235 *
1236 * Provided by the WGL_WINE_query_renderer extension.
1237 */
1238 const GLchar * WINAPI wglQueryCurrentRendererStringWINE( GLenum attribute )
1239 {
1240 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1241
1242 if (!funcs->ext.p_wglQueryCurrentRendererStringWINE) return NULL;
1243 return funcs->ext.p_wglQueryCurrentRendererStringWINE( attribute );
1244 }
1245
1246 /***********************************************************************
1247 * wglQueryRendererIntegerWINE
1248 *
1249 * Provided by the WGL_WINE_query_renderer extension.
1250 */
1251 BOOL WINAPI wglQueryRendererIntegerWINE( HDC dc, GLint renderer, GLenum attribute, GLuint *value )
1252 {
1253 const struct opengl_funcs *funcs = get_dc_funcs( dc );
1254
1255 if (!funcs || !funcs->ext.p_wglQueryRendererIntegerWINE) return FALSE;
1256 return funcs->ext.p_wglQueryRendererIntegerWINE( dc, renderer, attribute, value );
1257 }
1258
1259 /***********************************************************************
1260 * wglQueryRendererStringWINE
1261 *
1262 * Provided by the WGL_WINE_query_renderer extension.
1263 */
1264 const GLchar * WINAPI wglQueryRendererStringWINE( HDC dc, GLint renderer, GLenum attribute )
1265 {
1266 const struct opengl_funcs *funcs = get_dc_funcs( dc );
1267
1268 if (!funcs || !funcs->ext.p_wglQueryRendererStringWINE) return NULL;
1269 return funcs->ext.p_wglQueryRendererStringWINE( dc, renderer, attribute );
1270 }
1271
1272 /***********************************************************************
1273 * wglUseFontBitmaps_common
1274 */
1275 static BOOL wglUseFontBitmaps_common( HDC hdc, DWORD first, DWORD count, DWORD listBase, BOOL unicode )
1276 {
1277 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1278 GLYPHMETRICS gm;
1279 unsigned int glyph, size = 0;
1280 void *bitmap = NULL, *gl_bitmap = NULL;
1281 int org_alignment;
1282 BOOL ret = TRUE;
1283
1284 funcs->gl.p_glGetIntegerv(GL_UNPACK_ALIGNMENT, &org_alignment);
1285 funcs->gl.p_glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
1286
1287 for (glyph = first; glyph < first + count; glyph++) {
1288 unsigned int needed_size, height, width, width_int;
1289
1290 if (unicode)
1291 needed_size = GetGlyphOutlineW(hdc, glyph, GGO_BITMAP, &gm, 0, NULL, &identity);
1292 else
1293 needed_size = GetGlyphOutlineA(hdc, glyph, GGO_BITMAP, &gm, 0, NULL, &identity);
1294
1295 TRACE("Glyph: %3d / List: %d size %d\n", glyph, listBase, needed_size);
1296 if (needed_size == GDI_ERROR) {
1297 ret = FALSE;
1298 break;
1299 }
1300
1301 if (needed_size > size) {
1302 size = needed_size;
1303 HeapFree(GetProcessHeap(), 0, bitmap);
1304 HeapFree(GetProcessHeap(), 0, gl_bitmap);
1305 bitmap = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
1306 gl_bitmap = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
1307 }
1308 if (needed_size != 0) {
1309 if (unicode)
1310 ret = (GetGlyphOutlineW(hdc, glyph, GGO_BITMAP, &gm,
1311 size, bitmap, &identity) != GDI_ERROR);
1312 else
1313 ret = (GetGlyphOutlineA(hdc, glyph, GGO_BITMAP, &gm,
1314 size, bitmap, &identity) != GDI_ERROR);
1315 if (!ret) break;
1316 }
1317
1318 if (TRACE_ON(wgl)) {
1319 unsigned int bitmask;
1320 unsigned char *bitmap_ = bitmap;
1321
1322 TRACE(" - bbox: %d x %d\n", gm.gmBlackBoxX, gm.gmBlackBoxY);
1323 TRACE(" - origin: (%d, %d)\n", gm.gmptGlyphOrigin.x, gm.gmptGlyphOrigin.y);
1324 TRACE(" - increment: %d - %d\n", gm.gmCellIncX, gm.gmCellIncY);
1325 if (needed_size != 0) {
1326 TRACE(" - bitmap:\n");
1327 for (height = 0; height < gm.gmBlackBoxY; height++) {
1328 TRACE(" ");
1329 for (width = 0, bitmask = 0x80; width < gm.gmBlackBoxX; width++, bitmask >>= 1) {
1330 if (bitmask == 0) {
1331 bitmap_ += 1;
1332 bitmask = 0x80;
1333 }
1334 if (*bitmap_ & bitmask)
1335 TRACE("*");
1336 else
1337 TRACE(" ");
1338 }
1339 bitmap_ += (4 - ((UINT_PTR)bitmap_ & 0x03));
1340 TRACE("\n");
1341 }
1342 }
1343 }
1344
1345 /* In OpenGL, the bitmap is drawn from the bottom to the top... So we need to invert the
1346 * glyph for it to be drawn properly.
1347 */
1348 if (needed_size != 0) {
1349 width_int = (gm.gmBlackBoxX + 31) / 32;
1350 for (height = 0; height < gm.gmBlackBoxY; height++) {
1351 for (width = 0; width < width_int; width++) {
1352 ((int *) gl_bitmap)[(gm.gmBlackBoxY - height - 1) * width_int + width] =
1353 ((int *) bitmap)[height * width_int + width];
1354 }
1355 }
1356 }
1357
1358 funcs->gl.p_glNewList(listBase++, GL_COMPILE);
1359 if (needed_size != 0) {
1360 funcs->gl.p_glBitmap(gm.gmBlackBoxX, gm.gmBlackBoxY,
1361 0 - gm.gmptGlyphOrigin.x, (int) gm.gmBlackBoxY - gm.gmptGlyphOrigin.y,
1362 gm.gmCellIncX, gm.gmCellIncY,
1363 gl_bitmap);
1364 } else {
1365 /* This is the case of 'empty' glyphs like the space character */
1366 funcs->gl.p_glBitmap(0, 0, 0, 0, gm.gmCellIncX, gm.gmCellIncY, NULL);
1367 }
1368 funcs->gl.p_glEndList();
1369 }
1370
1371 funcs->gl.p_glPixelStorei(GL_UNPACK_ALIGNMENT, org_alignment);
1372 HeapFree(GetProcessHeap(), 0, bitmap);
1373 HeapFree(GetProcessHeap(), 0, gl_bitmap);
1374 return ret;
1375 }
1376
1377 /***********************************************************************
1378 * wglUseFontBitmapsA (OPENGL32.@)
1379 */
1380 BOOL WINAPI wglUseFontBitmapsA(HDC hdc, DWORD first, DWORD count, DWORD listBase)
1381 {
1382 return wglUseFontBitmaps_common( hdc, first, count, listBase, FALSE );
1383 }
1384
1385 /***********************************************************************
1386 * wglUseFontBitmapsW (OPENGL32.@)
1387 */
1388 BOOL WINAPI wglUseFontBitmapsW(HDC hdc, DWORD first, DWORD count, DWORD listBase)
1389 {
1390 return wglUseFontBitmaps_common( hdc, first, count, listBase, TRUE );
1391 }
1392
1393 /* FIXME: should probably have a glu.h header */
1394
1395 typedef struct GLUtesselator GLUtesselator;
1396 typedef void (WINAPI *_GLUfuncptr)(void);
1397
1398 #define GLU_TESS_BEGIN 100100
1399 #define GLU_TESS_VERTEX 100101
1400 #define GLU_TESS_END 100102
1401
1402 static GLUtesselator * (WINAPI *pgluNewTess)(void);
1403 static void (WINAPI *pgluDeleteTess)(GLUtesselator *tess);
1404 static void (WINAPI *pgluTessNormal)(GLUtesselator *tess, GLdouble x, GLdouble y, GLdouble z);
1405 static void (WINAPI *pgluTessBeginPolygon)(GLUtesselator *tess, void *polygon_data);
1406 static void (WINAPI *pgluTessEndPolygon)(GLUtesselator *tess);
1407 static void (WINAPI *pgluTessCallback)(GLUtesselator *tess, GLenum which, _GLUfuncptr fn);
1408 static void (WINAPI *pgluTessBeginContour)(GLUtesselator *tess);
1409 static void (WINAPI *pgluTessEndContour)(GLUtesselator *tess);
1410 static void (WINAPI *pgluTessVertex)(GLUtesselator *tess, GLdouble *location, GLvoid* data);
1411
1412 static HMODULE load_libglu(void)
1413 {
1414 static const WCHAR glu32W[] = {'g','l','u','3','2','.','d','l','l',0};
1415 static BOOL already_loaded;
1416 static HMODULE module;
1417
1418 if (already_loaded) return module;
1419 already_loaded = TRUE;
1420
1421 TRACE("Trying to load GLU library\n");
1422 module = LoadLibraryW( glu32W );
1423 if (!module)
1424 {
1425 WARN("Failed to load glu32\n");
1426 return NULL;
1427 }
1428 #define LOAD_FUNCPTR(f) p##f = (void *)GetProcAddress( module, #f )
1429 LOAD_FUNCPTR(gluNewTess);
1430 LOAD_FUNCPTR(gluDeleteTess);
1431 LOAD_FUNCPTR(gluTessBeginContour);
1432 LOAD_FUNCPTR(gluTessNormal);
1433 LOAD_FUNCPTR(gluTessBeginPolygon);
1434 LOAD_FUNCPTR(gluTessCallback);
1435 LOAD_FUNCPTR(gluTessEndContour);
1436 LOAD_FUNCPTR(gluTessEndPolygon);
1437 LOAD_FUNCPTR(gluTessVertex);
1438 #undef LOAD_FUNCPTR
1439 return module;
1440 }
1441
1442 static void fixed_to_double(POINTFX fixed, UINT em_size, GLdouble vertex[3])
1443 {
1444 vertex[0] = (fixed.x.value + (GLdouble)fixed.x.fract / (1 << 16)) / em_size;
1445 vertex[1] = (fixed.y.value + (GLdouble)fixed.y.fract / (1 << 16)) / em_size;
1446 vertex[2] = 0.0;
1447 }
1448
1449 static void WINAPI tess_callback_vertex(GLvoid *vertex)
1450 {
1451 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1452 GLdouble *dbl = vertex;
1453 TRACE("%f, %f, %f\n", dbl[0], dbl[1], dbl[2]);
1454 funcs->gl.p_glVertex3dv(vertex);
1455 }
1456
1457 static void WINAPI tess_callback_begin(GLenum which)
1458 {
1459 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1460 TRACE("%d\n", which);
1461 funcs->gl.p_glBegin(which);
1462 }
1463
1464 static void WINAPI tess_callback_end(void)
1465 {
1466 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1467 TRACE("\n");
1468 funcs->gl.p_glEnd();
1469 }
1470
1471 typedef struct _bezier_vector {
1472 GLdouble x;
1473 GLdouble y;
1474 } bezier_vector;
1475
1476 static double bezier_deviation_squared(const bezier_vector *p)
1477 {
1478 bezier_vector deviation;
1479 bezier_vector vertex;
1480 bezier_vector base;
1481 double base_length;
1482 double dot;
1483
1484 vertex.x = (p[0].x + p[1].x*2 + p[2].x)/4 - p[0].x;
1485 vertex.y = (p[0].y + p[1].y*2 + p[2].y)/4 - p[0].y;
1486
1487 base.x = p[2].x - p[0].x;
1488 base.y = p[2].y - p[0].y;
1489
1490 base_length = sqrt(base.x*base.x + base.y*base.y);
1491 base.x /= base_length;
1492 base.y /= base_length;
1493
1494 dot = base.x*vertex.x + base.y*vertex.y;
1495 dot = min(max(dot, 0.0), base_length);
1496 base.x *= dot;
1497 base.y *= dot;
1498
1499 deviation.x = vertex.x-base.x;
1500 deviation.y = vertex.y-base.y;
1501
1502 return deviation.x*deviation.x + deviation.y*deviation.y;
1503 }
1504
1505 static int bezier_approximate(const bezier_vector *p, bezier_vector *points, FLOAT deviation)
1506 {
1507 bezier_vector first_curve[3];
1508 bezier_vector second_curve[3];
1509 bezier_vector vertex;
1510 int total_vertices;
1511
1512 if(bezier_deviation_squared(p) <= deviation*deviation)
1513 {
1514 if(points)
1515 *points = p[2];
1516 return 1;
1517 }
1518
1519 vertex.x = (p[0].x + p[1].x*2 + p[2].x)/4;
1520 vertex.y = (p[0].y + p[1].y*2 + p[2].y)/4;
1521
1522 first_curve[0] = p[0];
1523 first_curve[1].x = (p[0].x + p[1].x)/2;
1524 first_curve[1].y = (p[0].y + p[1].y)/2;
1525 first_curve[2] = vertex;
1526
1527 second_curve[0] = vertex;
1528 second_curve[1].x = (p[2].x + p[1].x)/2;
1529 second_curve[1].y = (p[2].y + p[1].y)/2;
1530 second_curve[2] = p[2];
1531
1532 total_vertices = bezier_approximate(first_curve, points, deviation);
1533 if(points)
1534 points += total_vertices;
1535 total_vertices += bezier_approximate(second_curve, points, deviation);
1536 return total_vertices;
1537 }
1538
1539 /***********************************************************************
1540 * wglUseFontOutlines_common
1541 */
1542 static BOOL wglUseFontOutlines_common(HDC hdc,
1543 DWORD first,
1544 DWORD count,
1545 DWORD listBase,
1546 FLOAT deviation,
1547 FLOAT extrusion,
1548 int format,
1549 LPGLYPHMETRICSFLOAT lpgmf,
1550 BOOL unicode)
1551 {
1552 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1553 UINT glyph;
1554 GLUtesselator *tess = NULL;
1555 LOGFONTW lf;
1556 HFONT old_font, unscaled_font;
1557 UINT em_size = 1024;
1558 RECT rc;
1559
1560 TRACE("(%p, %d, %d, %d, %f, %f, %d, %p, %s)\n", hdc, first, count,
1561 listBase, deviation, extrusion, format, lpgmf, unicode ? "W" : "A");
1562
1563 if(deviation <= 0.0)
1564 deviation = 1.0/em_size;
1565
1566 if(format == WGL_FONT_POLYGONS)
1567 {
1568 if (!load_libglu())
1569 {
1570 ERR("glu32 is required for this function but isn't available\n");
1571 return FALSE;
1572 }
1573
1574 tess = pgluNewTess();
1575 if(!tess) return FALSE;
1576 pgluTessCallback(tess, GLU_TESS_VERTEX, (_GLUfuncptr)tess_callback_vertex);
1577 pgluTessCallback(tess, GLU_TESS_BEGIN, (_GLUfuncptr)tess_callback_begin);
1578 pgluTessCallback(tess, GLU_TESS_END, tess_callback_end);
1579 }
1580
1581 GetObjectW(GetCurrentObject(hdc, OBJ_FONT), sizeof(lf), &lf);
1582 rc.left = rc.right = rc.bottom = 0;
1583 rc.top = em_size;
1584 DPtoLP(hdc, (POINT*)&rc, 2);
1585 lf.lfHeight = -abs(rc.top - rc.bottom);
1586 lf.lfOrientation = lf.lfEscapement = 0;
1587 unscaled_font = CreateFontIndirectW(&lf);
1588 old_font = SelectObject(hdc, unscaled_font);
1589
1590 for (glyph = first; glyph < first + count; glyph++)
1591 {
1592 DWORD needed;
1593 GLYPHMETRICS gm;
1594 BYTE *buf;
1595 TTPOLYGONHEADER *pph;
1596 TTPOLYCURVE *ppc;
1597 GLdouble *vertices = NULL;
1598 int vertex_total = -1;
1599
1600 if(unicode)
1601 needed = GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
1602 else
1603 needed = GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
1604
1605 if(needed == GDI_ERROR)
1606 goto error;
1607
1608 buf = HeapAlloc(GetProcessHeap(), 0, needed);
1609
1610 if(unicode)
1611 GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
1612 else
1613 GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
1614
1615 TRACE("glyph %d\n", glyph);
1616
1617 if(lpgmf)
1618 {
1619 lpgmf->gmfBlackBoxX = (float)gm.gmBlackBoxX / em_size;
1620 lpgmf->gmfBlackBoxY = (float)gm.gmBlackBoxY / em_size;
1621 lpgmf->gmfptGlyphOrigin.x = (float)gm.gmptGlyphOrigin.x / em_size;
1622 lpgmf->gmfptGlyphOrigin.y = (float)gm.gmptGlyphOrigin.y / em_size;
1623 lpgmf->gmfCellIncX = (float)gm.gmCellIncX / em_size;
1624 lpgmf->gmfCellIncY = (float)gm.gmCellIncY / em_size;
1625
1626 TRACE("%fx%f at %f,%f inc %f,%f\n", lpgmf->gmfBlackBoxX, lpgmf->gmfBlackBoxY,
1627 lpgmf->gmfptGlyphOrigin.x, lpgmf->gmfptGlyphOrigin.y, lpgmf->gmfCellIncX, lpgmf->gmfCellIncY);
1628 lpgmf++;
1629 }
1630
1631 funcs->gl.p_glNewList(listBase++, GL_COMPILE);
1632 funcs->gl.p_glFrontFace(GL_CCW);
1633 if(format == WGL_FONT_POLYGONS)
1634 {
1635 funcs->gl.p_glNormal3d(0.0, 0.0, 1.0);
1636 pgluTessNormal(tess, 0, 0, 1);
1637 pgluTessBeginPolygon(tess, NULL);
1638 }
1639
1640 while(!vertices)
1641 {
1642 if(vertex_total != -1)
1643 vertices = HeapAlloc(GetProcessHeap(), 0, vertex_total * 3 * sizeof(GLdouble));
1644 vertex_total = 0;
1645
1646 pph = (TTPOLYGONHEADER*)buf;
1647 while((BYTE*)pph < buf + needed)
1648 {
1649 GLdouble previous[3];
1650 fixed_to_double(pph->pfxStart, em_size, previous);
1651
1652 if(vertices)
1653 TRACE("\tstart %d, %d\n", pph->pfxStart.x.value, pph->pfxStart.y.value);
1654
1655 if(format == WGL_FONT_POLYGONS)
1656 pgluTessBeginContour(tess);
1657 else
1658 funcs->gl.p_glBegin(GL_LINE_LOOP);
1659
1660 if(vertices)
1661 {
1662 fixed_to_double(pph->pfxStart, em_size, vertices);
1663 if(format == WGL_FONT_POLYGONS)
1664 pgluTessVertex(tess, vertices, vertices);
1665 else
1666 funcs->gl.p_glVertex3d(vertices[0], vertices[1], vertices[2]);
1667 vertices += 3;
1668 }
1669 vertex_total++;
1670
1671 ppc = (TTPOLYCURVE*)((char*)pph + sizeof(*pph));
1672 while((char*)ppc < (char*)pph + pph->cb)
1673 {
1674 int i, j;
1675 int num;
1676
1677 switch(ppc->wType) {
1678 case TT_PRIM_LINE:
1679 for(i = 0; i < ppc->cpfx; i++)
1680 {
1681 if(vertices)
1682 {
1683 TRACE("\t\tline to %d, %d\n",
1684 ppc->apfx[i].x.value, ppc->apfx[i].y.value);
1685 fixed_to_double(ppc->apfx[i], em_size, vertices);
1686 if(format == WGL_FONT_POLYGONS)
1687 pgluTessVertex(tess, vertices, vertices);
1688 else
1689 funcs->gl.p_glVertex3d(vertices[0], vertices[1], vertices[2]);
1690 vertices += 3;
1691 }
1692 fixed_to_double(ppc->apfx[i], em_size, previous);
1693 vertex_total++;
1694 }
1695 break;
1696
1697 case TT_PRIM_QSPLINE:
1698 for(i = 0; i < ppc->cpfx-1; i++)
1699 {
1700 bezier_vector curve[3];
1701 bezier_vector *points;
1702 GLdouble curve_vertex[3];
1703
1704 if(vertices)
1705 TRACE("\t\tcurve %d,%d %d,%d\n",
1706 ppc->apfx[i].x.value, ppc->apfx[i].y.value,
1707 ppc->apfx[i + 1].x.value, ppc->apfx[i + 1].y.value);
1708
1709 curve[0].x = previous[0];
1710 curve[0].y = previous[1];
1711 fixed_to_double(ppc->apfx[i], em_size, curve_vertex);
1712 curve[1].x = curve_vertex[0];
1713 curve[1].y = curve_vertex[1];
1714 fixed_to_double(ppc->apfx[i + 1], em_size, curve_vertex);
1715 curve[2].x = curve_vertex[0];
1716 curve[2].y = curve_vertex[1];
1717 if(i < ppc->cpfx-2)
1718 {
1719 curve[2].x = (curve[1].x + curve[2].x)/2;
1720 curve[2].y = (curve[1].y + curve[2].y)/2;
1721 }
1722 num = bezier_approximate(curve, NULL, deviation);
1723 points = HeapAlloc(GetProcessHeap(), 0, num*sizeof(bezier_vector));
1724 num = bezier_approximate(curve, points, deviation);
1725 vertex_total += num;
1726 if(vertices)
1727 {
1728 for(j=0; j<num; j++)
1729 {
1730 TRACE("\t\t\tvertex at %f,%f\n", points[j].x, points[j].y);
1731 vertices[0] = points[j].x;
1732 vertices[1] = points[j].y;
1733 vertices[2] = 0.0;
1734 if(format == WGL_FONT_POLYGONS)
1735 pgluTessVertex(tess, vertices, vertices);
1736 else
1737 funcs->gl.p_glVertex3d(vertices[0], vertices[1], vertices[2]);
1738 vertices += 3;
1739 }
1740 }
1741 HeapFree(GetProcessHeap(), 0, points);
1742 previous[0] = curve[2].x;
1743 previous[1] = curve[2].y;
1744 }
1745 break;
1746 default:
1747 ERR("\t\tcurve type = %d\n", ppc->wType);
1748 if(format == WGL_FONT_POLYGONS)
1749 pgluTessEndContour(tess);
1750 else
1751 funcs->gl.p_glEnd();
1752 goto error_in_list;
1753 }
1754
1755 ppc = (TTPOLYCURVE*)((char*)ppc + sizeof(*ppc) +
1756 (ppc->cpfx - 1) * sizeof(POINTFX));
1757 }
1758 if(format == WGL_FONT_POLYGONS)
1759 pgluTessEndContour(tess);
1760 else
1761 funcs->gl.p_glEnd();
1762 pph = (TTPOLYGONHEADER*)((char*)pph + pph->cb);
1763 }
1764 }
1765
1766 error_in_list:
1767 if(format == WGL_FONT_POLYGONS)
1768 pgluTessEndPolygon(tess);
1769 funcs->gl.p_glTranslated((GLdouble)gm.gmCellIncX / em_size, (GLdouble)gm.gmCellIncY / em_size, 0.0);
1770 funcs->gl.p_glEndList();
1771 HeapFree(GetProcessHeap(), 0, buf);
1772 HeapFree(GetProcessHeap(), 0, vertices);
1773 }
1774
1775 error:
1776 DeleteObject(SelectObject(hdc, old_font));
1777 if(format == WGL_FONT_POLYGONS)
1778 pgluDeleteTess(tess);
1779 return TRUE;
1780
1781 }
1782
1783 /***********************************************************************
1784 * wglUseFontOutlinesA (OPENGL32.@)
1785 */
1786 BOOL WINAPI wglUseFontOutlinesA(HDC hdc,
1787 DWORD first,
1788 DWORD count,
1789 DWORD listBase,
1790 FLOAT deviation,
1791 FLOAT extrusion,
1792 int format,
1793 LPGLYPHMETRICSFLOAT lpgmf)
1794 {
1795 return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, FALSE);
1796 }
1797
1798 /***********************************************************************
1799 * wglUseFontOutlinesW (OPENGL32.@)
1800 */
1801 BOOL WINAPI wglUseFontOutlinesW(HDC hdc,
1802 DWORD first,
1803 DWORD count,
1804 DWORD listBase,
1805 FLOAT deviation,
1806 FLOAT extrusion,
1807 int format,
1808 LPGLYPHMETRICSFLOAT lpgmf)
1809 {
1810 return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, TRUE);
1811 }
1812
1813 /***********************************************************************
1814 * glDebugEntry (OPENGL32.@)
1815 */
1816 GLint WINAPI glDebugEntry( GLint unknown1, GLint unknown2 )
1817 {
1818 return 0;
1819 }
1820
1821 static GLubyte *filter_extensions_list(const char *extensions, const char *disabled)
1822 {
1823 char *p, *str;
1824 const char *end;
1825
1826 p = str = HeapAlloc(GetProcessHeap(), 0, strlen(extensions) + 2);
1827 if (!str)
1828 return NULL;
1829
1830 TRACE( "GL_EXTENSIONS:\n" );
1831
1832 for (;;)
1833 {
1834 while (*extensions == ' ')
1835 extensions++;
1836 if (!*extensions)
1837 break;
1838 if (!(end = strchr(extensions, ' ')))
1839 end = extensions + strlen(extensions);
1840 memcpy(p, extensions, end - extensions);
1841 p[end - extensions] = 0;
1842 if (!has_extension(disabled, p, strlen(p)))
1843 {
1844 TRACE("++ %s\n", p);
1845 p += end - extensions;
1846 *p++ = ' ';
1847 }
1848 else
1849 {
1850 TRACE("-- %s (disabled by config)\n", p);
1851 }
1852 extensions = end;
1853 }
1854 *p = 0;
1855 return (GLubyte *)str;
1856 }
1857
1858 static GLuint *filter_extensions_index(const char *disabled)
1859 {
1860 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1861 const char *ext, *end, *gl_ext;
1862 GLuint *disabled_exts, *new_disabled_exts;
1863 unsigned int i = 0, j, disabled_size;
1864 GLint extensions_count;
1865
1866 if (!funcs->ext.p_glGetStringi)
1867 {
1868 void **func_ptr = (void **)&funcs->ext.p_glGetStringi;
1869
1870 *func_ptr = funcs->wgl.p_wglGetProcAddress("glGetStringi");
1871 if (!funcs->ext.p_glGetStringi)
1872 return NULL;
1873 }
1874
1875 funcs->gl.p_glGetIntegerv(GL_NUM_EXTENSIONS, &extensions_count);
1876 disabled_size = 2;
1877 disabled_exts = HeapAlloc(GetProcessHeap(), 0, disabled_size * sizeof(*disabled_exts));
1878 if (!disabled_exts)
1879 return NULL;
1880
1881 TRACE( "GL_EXTENSIONS:\n" );
1882
1883 for (j = 0; j < extensions_count; ++j)
1884 {
1885 gl_ext = (const char *)funcs->ext.p_glGetStringi(GL_EXTENSIONS, j);
1886 ext = disabled;
1887 for (;;)
1888 {
1889 while (*ext == ' ')
1890 ext++;
1891 if (!*ext)
1892 {
1893 TRACE("++ %s\n", gl_ext);
1894 break;
1895 }
1896 if (!(end = strchr(ext, ' ')))
1897 end = ext + strlen(ext);
1898
1899 if (!strncmp(gl_ext, ext, end - ext) && !gl_ext[end - ext])
1900 {
1901 if (i + 1 == disabled_size)
1902 {
1903 disabled_size *= 2;
1904 new_disabled_exts = HeapReAlloc(GetProcessHeap(), 0, disabled_exts,
1905 disabled_size * sizeof(*disabled_exts));
1906 if (!new_disabled_exts)
1907 {
1908 disabled_exts[i] = ~0u;
1909 return disabled_exts;
1910 }
1911 disabled_exts = new_disabled_exts;
1912 }
1913 TRACE("-- %s (disabled by config)\n", gl_ext);
1914 disabled_exts[i++] = j;
1915 break;
1916 }
1917 ext = end;
1918 }
1919 }
1920 disabled_exts[i] = ~0u;
1921 return disabled_exts;
1922 }
1923
1924 /* build the extension string by filtering out the disabled extensions */
1925 static BOOL filter_extensions(const char *extensions, GLubyte **exts_list, GLuint **disabled_exts)
1926 {
1927 static const char *disabled;
1928
1929 if (!disabled)
1930 {
1931 HKEY hkey;
1932 DWORD size;
1933 char *str = NULL;
1934
1935 /* @@ Wine registry key: HKCU\Software\Wine\OpenGL */
1936 if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\OpenGL", &hkey ))
1937 {
1938 if (!RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, NULL, &size ))
1939 {
1940 str = HeapAlloc( GetProcessHeap(), 0, size );
1941 if (RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, (BYTE *)str, &size )) *str = 0;
1942 }
1943 RegCloseKey( hkey );
1944 }
1945 if (str)
1946 {
1947 if (InterlockedCompareExchangePointer( (void **)&disabled, str, NULL ))
1948 HeapFree( GetProcessHeap(), 0, str );
1949 }
1950 else disabled = "";
1951 }
1952
1953 if (!disabled[0])
1954 return FALSE;
1955
1956 if (extensions && !*exts_list)
1957 *exts_list = filter_extensions_list(extensions, disabled);
1958
1959 if (!*disabled_exts)
1960 *disabled_exts = filter_extensions_index(disabled);
1961
1962 return (exts_list && *exts_list) || *disabled_exts;
1963 }
1964
1965 /***********************************************************************
1966 * glGetString (OPENGL32.@)
1967 */
1968 const GLubyte * WINAPI glGetString( GLenum name )
1969 {
1970 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1971 const GLubyte *ret = funcs->gl.p_glGetString( name );
1972
1973 if (name == GL_EXTENSIONS && ret)
1974 {
1975 struct wgl_handle *ptr = get_current_context_ptr();
1976 if (ptr->u.context->extensions ||
1977 filter_extensions((const char *)ret, &ptr->u.context->extensions, &ptr->u.context->disabled_exts))
1978 ret = ptr->u.context->extensions;
1979 }
1980 return ret;
1981 }
1982
1983 /***********************************************************************
1984 * OpenGL initialisation routine
1985 */
1986 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
1987 {
1988 switch(reason)
1989 {
1990 case DLL_PROCESS_ATTACH:
1991 NtCurrentTeb()->glTable = &null_opengl_funcs;
1992 break;
1993 case DLL_THREAD_ATTACH:
1994 NtCurrentTeb()->glTable = &null_opengl_funcs;
1995 break;
1996 }
1997 return TRUE;
1998 }
Windows API implementation