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wined3d: Clear the renderbuffer IDs on unload.
[wine.git] / dlls / opengl32 / wgl.c
blob932b217a93e1a72851fa665f1a088519046af5c1
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 || !funcs->ext.p_wglCreateContextAttribsARB) return 0;
278 if (share && !(share_ptr = get_handle_ptr( share, HANDLE_CONTEXT ))) return 0;
279 if ((drv_ctx = funcs->ext.p_wglCreateContextAttribsARB( hdc,
280 share_ptr ? share_ptr->u.context->drv_ctx : NULL, attribs )))
281 {
282 if ((context = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*context) )))
283 {
284 enum wgl_handle_type type = HANDLE_CONTEXT;
285
286 if (attribs)
287 {
288 while (*attribs)
289 {
290 if (attribs[0] == WGL_CONTEXT_MAJOR_VERSION_ARB)
291 {
292 if (attribs[1] >= 3)
293 type = HANDLE_CONTEXT_V3;
294 break;
295 }
296 attribs += 2;
297 }
298 }
299
300 context->drv_ctx = drv_ctx;
301 if (!(ret = alloc_handle( type, funcs, context )))
302 HeapFree( GetProcessHeap(), 0, context );
303 }
304 if (!ret) funcs->wgl.p_wglDeleteContext( drv_ctx );
305 }
306 release_handle_ptr( share_ptr );
307 return ret;
308
309 }
310
311 /***********************************************************************
312 * wglMakeContextCurrentARB
313 *
314 * Provided by the WGL_ARB_make_current_read extension.
315 */
316 BOOL WINAPI wglMakeContextCurrentARB( HDC draw_hdc, HDC read_hdc, HGLRC hglrc )
317 {
318 BOOL ret = TRUE;
319 struct wgl_handle *ptr, *prev = get_current_context_ptr();
320
321 if (hglrc)
322 {
323 if (!(ptr = get_handle_ptr( hglrc, HANDLE_CONTEXT ))) return FALSE;
324 if (!ptr->u.context->tid || ptr->u.context->tid == GetCurrentThreadId())
325 {
326 ret = (ptr->funcs->ext.p_wglMakeContextCurrentARB &&
327 ptr->funcs->ext.p_wglMakeContextCurrentARB( draw_hdc, read_hdc,
328 ptr->u.context->drv_ctx ));
329 if (ret)
330 {
331 if (prev) prev->u.context->tid = 0;
332 ptr->u.context->tid = GetCurrentThreadId();
333 ptr->u.context->draw_dc = draw_hdc;
334 ptr->u.context->read_dc = read_hdc;
335 NtCurrentTeb()->glCurrentRC = hglrc;
336 NtCurrentTeb()->glTable = ptr->funcs;
337 }
338 }
339 else
340 {
341 SetLastError( ERROR_BUSY );
342 ret = FALSE;
343 }
344 release_handle_ptr( ptr );
345 }
346 else if (prev)
347 {
348 if (!prev->funcs->wgl.p_wglMakeCurrent( 0, NULL )) return FALSE;
349 prev->u.context->tid = 0;
350 NtCurrentTeb()->glCurrentRC = 0;
351 NtCurrentTeb()->glTable = &null_opengl_funcs;
352 }
353 return ret;
354 }
355
356 /***********************************************************************
357 * wglGetCurrentReadDCARB
358 *
359 * Provided by the WGL_ARB_make_current_read extension.
360 */
361 HDC WINAPI wglGetCurrentReadDCARB(void)
362 {
363 struct wgl_handle *ptr = get_current_context_ptr();
364
365 if (!ptr) return 0;
366 return ptr->u.context->read_dc;
367 }
368
369 /***********************************************************************
370 * wglShareLists (OPENGL32.@)
371 */
372 BOOL WINAPI wglShareLists(HGLRC hglrcSrc, HGLRC hglrcDst)
373 {
374 BOOL ret = FALSE;
375 struct wgl_handle *src, *dst;
376
377 if (!(src = get_handle_ptr( hglrcSrc, HANDLE_CONTEXT ))) return FALSE;
378 if ((dst = get_handle_ptr( hglrcDst, HANDLE_CONTEXT )))
379 {
380 if (src->funcs != dst->funcs) SetLastError( ERROR_INVALID_HANDLE );
381 else ret = src->funcs->wgl.p_wglShareLists( src->u.context->drv_ctx, dst->u.context->drv_ctx );
382 }
383 release_handle_ptr( dst );
384 release_handle_ptr( src );
385 return ret;
386 }
387
388 /***********************************************************************
389 * wglGetCurrentDC (OPENGL32.@)
390 */
391 HDC WINAPI wglGetCurrentDC(void)
392 {
393 struct wgl_handle *ptr = get_current_context_ptr();
394
395 if (!ptr) return 0;
396 return ptr->u.context->draw_dc;
397 }
398
399 /***********************************************************************
400 * wglCreateContext (OPENGL32.@)
401 */
402 HGLRC WINAPI wglCreateContext(HDC hdc)
403 {
404 HGLRC ret = 0;
405 struct wgl_context *drv_ctx;
406 struct opengl_context *context;
407 struct opengl_funcs *funcs = get_dc_funcs( hdc );
408
409 if (!funcs) return 0;
410 if (!(drv_ctx = funcs->wgl.p_wglCreateContext( hdc ))) return 0;
411 if ((context = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*context) )))
412 {
413 context->drv_ctx = drv_ctx;
414 if (!(ret = alloc_handle( HANDLE_CONTEXT, funcs, context )))
415 HeapFree( GetProcessHeap(), 0, context );
416 }
417 if (!ret) funcs->wgl.p_wglDeleteContext( drv_ctx );
418 return ret;
419 }
420
421 /***********************************************************************
422 * wglGetCurrentContext (OPENGL32.@)
423 */
424 HGLRC WINAPI wglGetCurrentContext(void)
425 {
426 return NtCurrentTeb()->glCurrentRC;
427 }
428
429 /***********************************************************************
430 * wglDescribePixelFormat (OPENGL32.@)
431 */
432 INT WINAPI wglDescribePixelFormat(HDC hdc, INT format, UINT size, PIXELFORMATDESCRIPTOR *descr )
433 {
434 struct opengl_funcs *funcs = get_dc_funcs( hdc );
435 if (!funcs) return 0;
436 return funcs->wgl.p_wglDescribePixelFormat( hdc, format, size, descr );
437 }
438
439 /***********************************************************************
440 * wglChoosePixelFormat (OPENGL32.@)
441 */
442 INT WINAPI wglChoosePixelFormat(HDC hdc, const PIXELFORMATDESCRIPTOR* ppfd)
443 {
444 PIXELFORMATDESCRIPTOR format, best;
445 int i, count, best_format;
446 int bestDBuffer = -1, bestStereo = -1;
447
448 TRACE_(wgl)( "%p %p: size %u version %u flags %u type %u color %u %u,%u,%u,%u "
449 "accum %u depth %u stencil %u aux %u\n",
450 hdc, ppfd, ppfd->nSize, ppfd->nVersion, ppfd->dwFlags, ppfd->iPixelType,
451 ppfd->cColorBits, ppfd->cRedBits, ppfd->cGreenBits, ppfd->cBlueBits, ppfd->cAlphaBits,
452 ppfd->cAccumBits, ppfd->cDepthBits, ppfd->cStencilBits, ppfd->cAuxBuffers );
453
454 count = wglDescribePixelFormat( hdc, 0, 0, NULL );
455 if (!count) return 0;
456
457 best_format = 0;
458 best.dwFlags = 0;
459 best.cAlphaBits = -1;
460 best.cColorBits = -1;
461 best.cDepthBits = -1;
462 best.cStencilBits = -1;
463 best.cAuxBuffers = -1;
464
465 for (i = 1; i <= count; i++)
466 {
467 if (!wglDescribePixelFormat( hdc, i, sizeof(format), &format )) continue;
468
469 if (ppfd->iPixelType != format.iPixelType)
470 {
471 TRACE( "pixel type mismatch for iPixelFormat=%d\n", i );
472 continue;
473 }
474
475 /* only use bitmap capable for formats for bitmap rendering */
476 if( (ppfd->dwFlags & PFD_DRAW_TO_BITMAP) != (format.dwFlags & PFD_DRAW_TO_BITMAP))
477 {
478 TRACE( "PFD_DRAW_TO_BITMAP mismatch for iPixelFormat=%d\n", i );
479 continue;
480 }
481
482 /* The behavior of PDF_STEREO/PFD_STEREO_DONTCARE and PFD_DOUBLEBUFFER / PFD_DOUBLEBUFFER_DONTCARE
483 * is not very clear on MSDN. They specify that ChoosePixelFormat tries to match pixel formats
484 * with the flag (PFD_STEREO / PFD_DOUBLEBUFFERING) set. Otherwise it says that it tries to match
485 * formats without the given flag set.
486 * A test on Windows using a Radeon 9500pro on WinXP (the driver doesn't support Stereo)
487 * has indicated that a format without stereo is returned when stereo is unavailable.
488 * So in case PFD_STEREO is set, formats that support it should have priority above formats
489 * without. In case PFD_STEREO_DONTCARE is set, stereo is ignored.
490 *
491 * To summarize the following is most likely the correct behavior:
492 * stereo not set -> prefer non-stereo formats, but also accept stereo formats
493 * stereo set -> prefer stereo formats, but also accept non-stereo formats
494 * stereo don't care -> it doesn't matter whether we get stereo or not
495 *
496 * In Wine we will treat non-stereo the same way as don't care because it makes
497 * format selection even more complicated and second drivers with Stereo advertise
498 * each format twice anyway.
499 */
500
501 /* Doublebuffer, see the comments above */
502 if (!(ppfd->dwFlags & PFD_DOUBLEBUFFER_DONTCARE))
503 {
504 if (((ppfd->dwFlags & PFD_DOUBLEBUFFER) != bestDBuffer) &&
505 ((format.dwFlags & PFD_DOUBLEBUFFER) == (ppfd->dwFlags & PFD_DOUBLEBUFFER)))
506 goto found;
507
508 if (bestDBuffer != -1 && (format.dwFlags & PFD_DOUBLEBUFFER) != bestDBuffer) continue;
509 }
510
511 /* Stereo, see the comments above. */
512 if (!(ppfd->dwFlags & PFD_STEREO_DONTCARE))
513 {
514 if (((ppfd->dwFlags & PFD_STEREO) != bestStereo) &&
515 ((format.dwFlags & PFD_STEREO) == (ppfd->dwFlags & PFD_STEREO)))
516 goto found;
517
518 if (bestStereo != -1 && (format.dwFlags & PFD_STEREO) != bestStereo) continue;
519 }
520
521 /* Below we will do a number of checks to select the 'best' pixelformat.
522 * We assume the precedence cColorBits > cAlphaBits > cDepthBits > cStencilBits -> cAuxBuffers.
523 * The code works by trying to match the most important options as close as possible.
524 * When a reasonable format is found, we will try to match more options.
525 * It appears (see the opengl32 test) that Windows opengl drivers ignore options
526 * like cColorBits, cAlphaBits and friends if they are set to 0, so they are considered
527 * as DONTCARE. At least Serious Sam TSE relies on this behavior. */
528
529 if (ppfd->cColorBits)
530 {
531 if (((ppfd->cColorBits > best.cColorBits) && (format.cColorBits > best.cColorBits)) ||
532 ((format.cColorBits >= ppfd->cColorBits) && (format.cColorBits < best.cColorBits)))
533 goto found;
534
535 if (best.cColorBits != format.cColorBits) /* Do further checks if the format is compatible */
536 {
537 TRACE( "color mismatch for iPixelFormat=%d\n", i );
538 continue;
539 }
540 }
541 if (ppfd->cAlphaBits)
542 {
543 if (((ppfd->cAlphaBits > best.cAlphaBits) && (format.cAlphaBits > best.cAlphaBits)) ||
544 ((format.cAlphaBits >= ppfd->cAlphaBits) && (format.cAlphaBits < best.cAlphaBits)))
545 goto found;
546
547 if (best.cAlphaBits != format.cAlphaBits)
548 {
549 TRACE( "alpha mismatch for iPixelFormat=%d\n", i );
550 continue;
551 }
552 }
553 if (ppfd->cDepthBits)
554 {
555 if (((ppfd->cDepthBits > best.cDepthBits) && (format.cDepthBits > best.cDepthBits)) ||
556 ((format.cDepthBits >= ppfd->cDepthBits) && (format.cDepthBits < best.cDepthBits)))
557 goto found;
558
559 if (best.cDepthBits != format.cDepthBits)
560 {
561 TRACE( "depth mismatch for iPixelFormat=%d\n", i );
562 continue;
563 }
564 }
565 if (ppfd->cStencilBits)
566 {
567 if (((ppfd->cStencilBits > best.cStencilBits) && (format.cStencilBits > best.cStencilBits)) ||
568 ((format.cStencilBits >= ppfd->cStencilBits) && (format.cStencilBits < best.cStencilBits)))
569 goto found;
570
571 if (best.cStencilBits != format.cStencilBits)
572 {
573 TRACE( "stencil mismatch for iPixelFormat=%d\n", i );
574 continue;
575 }
576 }
577 if (ppfd->cAuxBuffers)
578 {
579 if (((ppfd->cAuxBuffers > best.cAuxBuffers) && (format.cAuxBuffers > best.cAuxBuffers)) ||
580 ((format.cAuxBuffers >= ppfd->cAuxBuffers) && (format.cAuxBuffers < best.cAuxBuffers)))
581 goto found;
582
583 if (best.cAuxBuffers != format.cAuxBuffers)
584 {
585 TRACE( "aux mismatch for iPixelFormat=%d\n", i );
586 continue;
587 }
588 }
589 continue;
590
591 found:
592 best_format = i;
593 best = format;
594 bestDBuffer = format.dwFlags & PFD_DOUBLEBUFFER;
595 bestStereo = format.dwFlags & PFD_STEREO;
596 }
597
598 TRACE( "returning %u\n", best_format );
599 return best_format;
600 }
601
602 /***********************************************************************
603 * wglGetPixelFormat (OPENGL32.@)
604 */
605 INT WINAPI wglGetPixelFormat(HDC hdc)
606 {
607 struct opengl_funcs *funcs = get_dc_funcs( hdc );
608 if (!funcs) return 0;
609 return funcs->wgl.p_wglGetPixelFormat( hdc );
610 }
611
612 /***********************************************************************
613 * wglSetPixelFormat(OPENGL32.@)
614 */
615 BOOL WINAPI wglSetPixelFormat( HDC hdc, INT format, const PIXELFORMATDESCRIPTOR *descr )
616 {
617 struct opengl_funcs *funcs = get_dc_funcs( hdc );
618 if (!funcs) return FALSE;
619 return funcs->wgl.p_wglSetPixelFormat( hdc, format, descr );
620 }
621
622 /***********************************************************************
623 * wglSwapBuffers (OPENGL32.@)
624 */
625 BOOL WINAPI DECLSPEC_HOTPATCH wglSwapBuffers( HDC hdc )
626 {
627 const struct opengl_funcs *funcs = get_dc_funcs( hdc );
628
629 if (!funcs || !funcs->wgl.p_wglSwapBuffers) return FALSE;
630 if (!funcs->wgl.p_wglSwapBuffers( hdc )) return FALSE;
631
632 if (TRACE_ON(fps))
633 {
634 static long prev_time, start_time;
635 static unsigned long frames, frames_total;
636
637 DWORD time = GetTickCount();
638 frames++;
639 frames_total++;
640 /* every 1.5 seconds */
641 if (time - prev_time > 1500)
642 {
643 TRACE_(fps)("@ approx %.2ffps, total %.2ffps\n",
644 1000.0*frames/(time - prev_time), 1000.0*frames_total/(time - start_time));
645 prev_time = time;
646 frames = 0;
647 if (start_time == 0) start_time = time;
648 }
649 }
650 return TRUE;
651 }
652
653 /***********************************************************************
654 * wglCreateLayerContext (OPENGL32.@)
655 */
656 HGLRC WINAPI wglCreateLayerContext(HDC hdc,
657 int iLayerPlane) {
658 TRACE("(%p,%d)\n", hdc, iLayerPlane);
659
660 if (iLayerPlane == 0) {
661 return wglCreateContext(hdc);
662 }
663 FIXME("no handler for layer %d\n", iLayerPlane);
664
665 return NULL;
666 }
667
668 /***********************************************************************
669 * wglDescribeLayerPlane (OPENGL32.@)
670 */
671 BOOL WINAPI wglDescribeLayerPlane(HDC hdc,
672 int iPixelFormat,
673 int iLayerPlane,
674 UINT nBytes,
675 LPLAYERPLANEDESCRIPTOR plpd) {
676 FIXME("(%p,%d,%d,%d,%p)\n", hdc, iPixelFormat, iLayerPlane, nBytes, plpd);
677
678 return FALSE;
679 }
680
681 /***********************************************************************
682 * wglGetLayerPaletteEntries (OPENGL32.@)
683 */
684 int WINAPI wglGetLayerPaletteEntries(HDC hdc,
685 int iLayerPlane,
686 int iStart,
687 int cEntries,
688 const COLORREF *pcr) {
689 FIXME("(): stub!\n");
690
691 return 0;
692 }
693
694 static BOOL filter_extensions(const char *extensions, GLubyte **exts_list, GLuint **disabled_exts);
695
696 void WINAPI glGetIntegerv(GLenum pname, GLint *data)
697 {
698 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
699
700 TRACE("(%d, %p)\n", pname, data);
701 if (pname == GL_NUM_EXTENSIONS)
702 {
703 struct wgl_handle *ptr = get_current_context_ptr();
704
705 if (ptr->u.context->disabled_exts ||
706 filter_extensions(NULL, NULL, &ptr->u.context->disabled_exts))
707 {
708 const GLuint *disabled_exts = ptr->u.context->disabled_exts;
709 GLint count, disabled_count = 0;
710
711 funcs->gl.p_glGetIntegerv(pname, &count);
712 while (*disabled_exts++ != ~0u)
713 disabled_count++;
714 *data = count - disabled_count;
715 return;
716 }
717 }
718 funcs->gl.p_glGetIntegerv(pname, data);
719 }
720
721 const GLubyte * WINAPI glGetStringi(GLenum name, GLuint index)
722 {
723 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
724
725 TRACE("(%d, %d)\n", name, index);
726 if (!funcs->ext.p_glGetStringi)
727 {
728 void **func_ptr = (void **)&funcs->ext.p_glGetStringi;
729
730 *func_ptr = funcs->wgl.p_wglGetProcAddress("glGetStringi");
731 }
732
733 if (name == GL_EXTENSIONS)
734 {
735 struct wgl_handle *ptr = get_current_context_ptr();
736
737 if (ptr->u.context->disabled_exts ||
738 filter_extensions(NULL, NULL, &ptr->u.context->disabled_exts))
739 {
740 const GLuint *disabled_exts = ptr->u.context->disabled_exts;
741 unsigned int disabled_count = 0;
742
743 while (index + disabled_count >= *disabled_exts++)
744 disabled_count++;
745 return funcs->ext.p_glGetStringi(name, index + disabled_count);
746 }
747 }
748 return funcs->ext.p_glGetStringi(name, index);
749 }
750
751 /* check if the extension is present in the list */
752 static BOOL has_extension( const char *list, const char *ext, size_t len )
753 {
754 if (!list)
755 {
756 const char *gl_ext;
757 unsigned int i;
758 GLint extensions_count;
759
760 glGetIntegerv(GL_NUM_EXTENSIONS, &extensions_count);
761 for (i = 0; i < extensions_count; ++i)
762 {
763 gl_ext = (const char *)glGetStringi(GL_EXTENSIONS, i);
764 if (!strncmp(gl_ext, ext, len) && !gl_ext[len])
765 return TRUE;
766 }
767 return FALSE;
768 }
769
770 while (list)
771 {
772 while (*list == ' ') list++;
773 if (!strncmp( list, ext, len ) && (!list[len] || list[len] == ' ')) return TRUE;
774 list = strchr( list, ' ' );
775 }
776 return FALSE;
777 }
778
779 static int compar(const void *elt_a, const void *elt_b) {
780 return strcmp(((const OpenGL_extension *) elt_a)->name,
781 ((const OpenGL_extension *) elt_b)->name);
782 }
783
784 /* Check if a GL extension is supported */
785 static BOOL is_extension_supported(const char* extension)
786 {
787 enum wgl_handle_type type = get_current_context_type();
788 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
789 const char *gl_ext_string = NULL;
790 size_t len;
791
792 TRACE("Checking for extension '%s'\n", extension);
793
794 if (type == HANDLE_CONTEXT)
795 {
796 gl_ext_string = (const char*)glGetString(GL_EXTENSIONS);
797 if (!gl_ext_string)
798 {
799 ERR("No OpenGL extensions found, check if your OpenGL setup is correct!\n");
800 return FALSE;
801 }
802 }
803
804 /* We use the GetProcAddress function from the display driver to retrieve function pointers
805 * for OpenGL and WGL extensions. In case of winex11.drv the OpenGL extension lookup is done
806 * using glXGetProcAddress. This function is quite unreliable in the sense that its specs don't
807 * require the function to return NULL when an extension isn't found. For this reason we check
808 * if the OpenGL extension required for the function we are looking up is supported. */
809
810 while ((len = strcspn(extension, " ")) != 0)
811 {
812 /* Check if the extension is part of the GL extension string to see if it is supported. */
813 if (has_extension(gl_ext_string, extension, len))
814 return TRUE;
815
816 /* In general an OpenGL function starts as an ARB/EXT extension and at some stage
817 * it becomes part of the core OpenGL library and can be reached without the ARB/EXT
818 * suffix as well. In the extension table, these functions contain GL_VERSION_major_minor.
819 * Check if we are searching for a core GL function */
820 if(strncmp(extension, "GL_VERSION_", 11) == 0)
821 {
822 const GLubyte *gl_version = funcs->gl.p_glGetString(GL_VERSION);
823 const char *version = extension + 11; /* Move past 'GL_VERSION_' */
824
825 if(!gl_version) {
826 ERR("No OpenGL version found!\n");
827 return FALSE;
828 }
829
830 /* Compare the major/minor version numbers of the native OpenGL library and what is required by the function.
831 * The gl_version string is guaranteed to have at least a major/minor and sometimes it has a release number as well. */
832 if( (gl_version[0] > version[0]) || ((gl_version[0] == version[0]) && (gl_version[2] >= version[2])) ) {
833 return TRUE;
834 }
835 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]);
836 }
837
838 if (extension[len] == ' ') len++;
839 extension += len;
840 }
841
842 return FALSE;
843 }
844
845 /***********************************************************************
846 * wglGetProcAddress (OPENGL32.@)
847 */
848 PROC WINAPI wglGetProcAddress( LPCSTR name )
849 {
850 struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
851 void **func_ptr;
852 OpenGL_extension ext;
853 const OpenGL_extension *ext_ret;
854
855 if (!name) return NULL;
856
857 /* Without an active context opengl32 doesn't know to what
858 * driver it has to dispatch wglGetProcAddress.
859 */
860 if (!get_current_context_ptr())
861 {
862 WARN("No active WGL context found\n");
863 return NULL;
864 }
865
866 ext.name = name;
867 ext_ret = bsearch(&ext, extension_registry, extension_registry_size, sizeof(ext), compar);
868 if (!ext_ret)
869 {
870 WARN("Function %s unknown\n", name);
871 return NULL;
872 }
873
874 func_ptr = (void **)&funcs->ext + (ext_ret - extension_registry);
875 if (!*func_ptr)
876 {
877 void *driver_func = funcs->wgl.p_wglGetProcAddress( name );
878
879 if (!is_extension_supported(ext_ret->extension))
880 {
881 unsigned int i;
882 static const struct { const char *name, *alt; } alternatives[] =
883 {
884 { "glCopyTexSubImage3DEXT", "glCopyTexSubImage3D" }, /* needed by RuneScape */
885 { "glVertexAttribDivisor", "glVertexAttribDivisorARB"}, /* needed by Caffeine */
886 };
887
888 for (i = 0; i < sizeof(alternatives)/sizeof(alternatives[0]); i++)
889 {
890 if (strcmp( name, alternatives[i].name )) continue;
891 WARN("Extension %s required for %s not supported, trying %s\n",
892 ext_ret->extension, name, alternatives[i].alt );
893 return wglGetProcAddress( alternatives[i].alt );
894 }
895 WARN("Extension %s required for %s not supported\n", ext_ret->extension, name);
896 return NULL;
897 }
898
899 if (driver_func == NULL)
900 {
901 WARN("Function %s not supported by driver\n", name);
902 return NULL;
903 }
904 *func_ptr = driver_func;
905 }
906
907 TRACE("returning %s -> %p\n", name, ext_ret->func);
908 return ext_ret->func;
909 }
910
911 /***********************************************************************
912 * wglRealizeLayerPalette (OPENGL32.@)
913 */
914 BOOL WINAPI wglRealizeLayerPalette(HDC hdc,
915 int iLayerPlane,
916 BOOL bRealize) {
917 FIXME("()\n");
918
919 return FALSE;
920 }
921
922 /***********************************************************************
923 * wglSetLayerPaletteEntries (OPENGL32.@)
924 */
925 int WINAPI wglSetLayerPaletteEntries(HDC hdc,
926 int iLayerPlane,
927 int iStart,
928 int cEntries,
929 const COLORREF *pcr) {
930 FIXME("(): stub!\n");
931
932 return 0;
933 }
934
935 /***********************************************************************
936 * wglSwapLayerBuffers (OPENGL32.@)
937 */
938 BOOL WINAPI wglSwapLayerBuffers(HDC hdc,
939 UINT fuPlanes) {
940 TRACE("(%p, %08x)\n", hdc, fuPlanes);
941
942 if (fuPlanes & WGL_SWAP_MAIN_PLANE) {
943 if (!wglSwapBuffers( hdc )) return FALSE;
944 fuPlanes &= ~WGL_SWAP_MAIN_PLANE;
945 }
946
947 if (fuPlanes) {
948 WARN("Following layers unhandled: %08x\n", fuPlanes);
949 }
950
951 return TRUE;
952 }
953
954 /***********************************************************************
955 * wglAllocateMemoryNV
956 *
957 * Provided by the WGL_NV_vertex_array_range extension.
958 */
959 void * WINAPI wglAllocateMemoryNV( GLsizei size, GLfloat readfreq, GLfloat writefreq, GLfloat priority )
960 {
961 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
962
963 if (!funcs->ext.p_wglAllocateMemoryNV) return NULL;
964 return funcs->ext.p_wglAllocateMemoryNV( size, readfreq, writefreq, priority );
965 }
966
967 /***********************************************************************
968 * wglFreeMemoryNV
969 *
970 * Provided by the WGL_NV_vertex_array_range extension.
971 */
972 void WINAPI wglFreeMemoryNV( void *pointer )
973 {
974 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
975
976 if (funcs->ext.p_wglFreeMemoryNV) funcs->ext.p_wglFreeMemoryNV( pointer );
977 }
978
979 /***********************************************************************
980 * wglBindTexImageARB
981 *
982 * Provided by the WGL_ARB_render_texture extension.
983 */
984 BOOL WINAPI wglBindTexImageARB( HPBUFFERARB handle, int buffer )
985 {
986 struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER );
987 BOOL ret;
988
989 if (!ptr) return FALSE;
990 ret = ptr->funcs->ext.p_wglBindTexImageARB( ptr->u.pbuffer, buffer );
991 release_handle_ptr( ptr );
992 return ret;
993 }
994
995 /***********************************************************************
996 * wglReleaseTexImageARB
997 *
998 * Provided by the WGL_ARB_render_texture extension.
999 */
1000 BOOL WINAPI wglReleaseTexImageARB( HPBUFFERARB handle, int buffer )
1001 {
1002 struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER );
1003 BOOL ret;
1004
1005 if (!ptr) return FALSE;
1006 ret = ptr->funcs->ext.p_wglReleaseTexImageARB( ptr->u.pbuffer, buffer );
1007 release_handle_ptr( ptr );
1008 return ret;
1009 }
1010
1011 /***********************************************************************
1012 * wglSetPbufferAttribARB
1013 *
1014 * Provided by the WGL_ARB_render_texture extension.
1015 */
1016 BOOL WINAPI wglSetPbufferAttribARB( HPBUFFERARB handle, const int *attribs )
1017 {
1018 struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER );
1019 BOOL ret;
1020
1021 if (!ptr) return FALSE;
1022 ret = ptr->funcs->ext.p_wglSetPbufferAttribARB( ptr->u.pbuffer, attribs );
1023 release_handle_ptr( ptr );
1024 return ret;
1025 }
1026
1027 /***********************************************************************
1028 * wglChoosePixelFormatARB
1029 *
1030 * Provided by the WGL_ARB_pixel_format extension.
1031 */
1032 BOOL WINAPI wglChoosePixelFormatARB( HDC hdc, const int *iattribs, const FLOAT *fattribs,
1033 UINT max, int *formats, UINT *count )
1034 {
1035 const struct opengl_funcs *funcs = get_dc_funcs( hdc );
1036
1037 if (!funcs || !funcs->ext.p_wglChoosePixelFormatARB) return FALSE;
1038 return funcs->ext.p_wglChoosePixelFormatARB( hdc, iattribs, fattribs, max, formats, count );
1039 }
1040
1041 /***********************************************************************
1042 * wglGetPixelFormatAttribivARB
1043 *
1044 * Provided by the WGL_ARB_pixel_format extension.
1045 */
1046 BOOL WINAPI wglGetPixelFormatAttribivARB( HDC hdc, int format, int layer, UINT count, const int *attribs,
1047 int *values )
1048 {
1049 const struct opengl_funcs *funcs = get_dc_funcs( hdc );
1050
1051 if (!funcs || !funcs->ext.p_wglGetPixelFormatAttribivARB) return FALSE;
1052 return funcs->ext.p_wglGetPixelFormatAttribivARB( hdc, format, layer, count, attribs, values );
1053 }
1054
1055 /***********************************************************************
1056 * wglGetPixelFormatAttribfvARB
1057 *
1058 * Provided by the WGL_ARB_pixel_format extension.
1059 */
1060 BOOL WINAPI wglGetPixelFormatAttribfvARB( HDC hdc, int format, int layer, UINT count, const int *attribs,
1061 FLOAT *values )
1062 {
1063 const struct opengl_funcs *funcs = get_dc_funcs( hdc );
1064
1065 if (!funcs || !funcs->ext.p_wglGetPixelFormatAttribfvARB) return FALSE;
1066 return funcs->ext.p_wglGetPixelFormatAttribfvARB( hdc, format, layer, count, attribs, values );
1067 }
1068
1069 /***********************************************************************
1070 * wglCreatePbufferARB
1071 *
1072 * Provided by the WGL_ARB_pbuffer extension.
1073 */
1074 HPBUFFERARB WINAPI wglCreatePbufferARB( HDC hdc, int format, int width, int height, const int *attribs )
1075 {
1076 HPBUFFERARB ret;
1077 struct wgl_pbuffer *pbuffer;
1078 struct opengl_funcs *funcs = get_dc_funcs( hdc );
1079
1080 if (!funcs || !funcs->ext.p_wglCreatePbufferARB) return 0;
1081 if (!(pbuffer = funcs->ext.p_wglCreatePbufferARB( hdc, format, width, height, attribs ))) return 0;
1082 ret = alloc_handle( HANDLE_PBUFFER, funcs, pbuffer );
1083 if (!ret) funcs->ext.p_wglDestroyPbufferARB( pbuffer );
1084 return ret;
1085 }
1086
1087 /***********************************************************************
1088 * wglGetPbufferDCARB
1089 *
1090 * Provided by the WGL_ARB_pbuffer extension.
1091 */
1092 HDC WINAPI wglGetPbufferDCARB( HPBUFFERARB handle )
1093 {
1094 struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER );
1095 HDC ret;
1096
1097 if (!ptr) return 0;
1098 ret = ptr->funcs->ext.p_wglGetPbufferDCARB( ptr->u.pbuffer );
1099 release_handle_ptr( ptr );
1100 return ret;
1101 }
1102
1103 /***********************************************************************
1104 * wglReleasePbufferDCARB
1105 *
1106 * Provided by the WGL_ARB_pbuffer extension.
1107 */
1108 int WINAPI wglReleasePbufferDCARB( HPBUFFERARB handle, HDC hdc )
1109 {
1110 struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER );
1111 BOOL ret;
1112
1113 if (!ptr) return FALSE;
1114 ret = ptr->funcs->ext.p_wglReleasePbufferDCARB( ptr->u.pbuffer, hdc );
1115 release_handle_ptr( ptr );
1116 return ret;
1117 }
1118
1119 /***********************************************************************
1120 * wglDestroyPbufferARB
1121 *
1122 * Provided by the WGL_ARB_pbuffer extension.
1123 */
1124 BOOL WINAPI wglDestroyPbufferARB( HPBUFFERARB handle )
1125 {
1126 struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER );
1127
1128 if (!ptr) return FALSE;
1129 ptr->funcs->ext.p_wglDestroyPbufferARB( ptr->u.pbuffer );
1130 free_handle_ptr( ptr );
1131 return TRUE;
1132 }
1133
1134 /***********************************************************************
1135 * wglQueryPbufferARB
1136 *
1137 * Provided by the WGL_ARB_pbuffer extension.
1138 */
1139 BOOL WINAPI wglQueryPbufferARB( HPBUFFERARB handle, int attrib, int *value )
1140 {
1141 struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER );
1142 BOOL ret;
1143
1144 if (!ptr) return FALSE;
1145 ret = ptr->funcs->ext.p_wglQueryPbufferARB( ptr->u.pbuffer, attrib, value );
1146 release_handle_ptr( ptr );
1147 return ret;
1148 }
1149
1150 /***********************************************************************
1151 * wglGetExtensionsStringARB
1152 *
1153 * Provided by the WGL_ARB_extensions_string extension.
1154 */
1155 const char * WINAPI wglGetExtensionsStringARB( HDC hdc )
1156 {
1157 const struct opengl_funcs *funcs = get_dc_funcs( hdc );
1158
1159 if (!funcs || !funcs->ext.p_wglGetExtensionsStringARB) return NULL;
1160 return (const char *)funcs->ext.p_wglGetExtensionsStringARB( hdc );
1161 }
1162
1163 /***********************************************************************
1164 * wglGetExtensionsStringEXT
1165 *
1166 * Provided by the WGL_EXT_extensions_string extension.
1167 */
1168 const char * WINAPI wglGetExtensionsStringEXT(void)
1169 {
1170 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1171
1172 if (!funcs->ext.p_wglGetExtensionsStringEXT) return NULL;
1173 return (const char *)funcs->ext.p_wglGetExtensionsStringEXT();
1174 }
1175
1176 /***********************************************************************
1177 * wglSwapIntervalEXT
1178 *
1179 * Provided by the WGL_EXT_swap_control extension.
1180 */
1181 BOOL WINAPI wglSwapIntervalEXT( int interval )
1182 {
1183 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1184
1185 if (!funcs->ext.p_wglSwapIntervalEXT) return FALSE;
1186 return funcs->ext.p_wglSwapIntervalEXT( interval );
1187 }
1188
1189 /***********************************************************************
1190 * wglGetSwapIntervalEXT
1191 *
1192 * Provided by the WGL_EXT_swap_control extension.
1193 */
1194 int WINAPI wglGetSwapIntervalEXT(void)
1195 {
1196 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1197
1198 if (!funcs->ext.p_wglGetSwapIntervalEXT) return FALSE;
1199 return funcs->ext.p_wglGetSwapIntervalEXT();
1200 }
1201
1202 /***********************************************************************
1203 * wglSetPixelFormatWINE
1204 *
1205 * Provided by the WGL_WINE_pixel_format_passthrough extension.
1206 */
1207 BOOL WINAPI wglSetPixelFormatWINE( HDC hdc, int format )
1208 {
1209 const struct opengl_funcs *funcs = get_dc_funcs( hdc );
1210
1211 if (!funcs || !funcs->ext.p_wglSetPixelFormatWINE) return FALSE;
1212 return funcs->ext.p_wglSetPixelFormatWINE( hdc, format );
1213 }
1214
1215 /***********************************************************************
1216 * wglQueryCurrentRendererIntegerWINE
1217 *
1218 * Provided by the WGL_WINE_query_renderer extension.
1219 */
1220 BOOL WINAPI wglQueryCurrentRendererIntegerWINE( GLenum attribute, GLuint *value )
1221 {
1222 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1223
1224 if (!funcs->ext.p_wglQueryCurrentRendererIntegerWINE) return FALSE;
1225 return funcs->ext.p_wglQueryCurrentRendererIntegerWINE( attribute, value );
1226 }
1227
1228 /***********************************************************************
1229 * wglQueryCurrentRendererStringWINE
1230 *
1231 * Provided by the WGL_WINE_query_renderer extension.
1232 */
1233 const GLchar * WINAPI wglQueryCurrentRendererStringWINE( GLenum attribute )
1234 {
1235 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1236
1237 if (!funcs->ext.p_wglQueryCurrentRendererStringWINE) return NULL;
1238 return funcs->ext.p_wglQueryCurrentRendererStringWINE( attribute );
1239 }
1240
1241 /***********************************************************************
1242 * wglQueryRendererIntegerWINE
1243 *
1244 * Provided by the WGL_WINE_query_renderer extension.
1245 */
1246 BOOL WINAPI wglQueryRendererIntegerWINE( HDC dc, GLint renderer, GLenum attribute, GLuint *value )
1247 {
1248 const struct opengl_funcs *funcs = get_dc_funcs( dc );
1249
1250 if (!funcs || !funcs->ext.p_wglQueryRendererIntegerWINE) return FALSE;
1251 return funcs->ext.p_wglQueryRendererIntegerWINE( dc, renderer, attribute, value );
1252 }
1253
1254 /***********************************************************************
1255 * wglQueryRendererStringWINE
1256 *
1257 * Provided by the WGL_WINE_query_renderer extension.
1258 */
1259 const GLchar * WINAPI wglQueryRendererStringWINE( HDC dc, GLint renderer, GLenum attribute )
1260 {
1261 const struct opengl_funcs *funcs = get_dc_funcs( dc );
1262
1263 if (!funcs || !funcs->ext.p_wglQueryRendererStringWINE) return NULL;
1264 return funcs->ext.p_wglQueryRendererStringWINE( dc, renderer, attribute );
1265 }
1266
1267 /***********************************************************************
1268 * wglUseFontBitmaps_common
1269 */
1270 static BOOL wglUseFontBitmaps_common( HDC hdc, DWORD first, DWORD count, DWORD listBase, BOOL unicode )
1271 {
1272 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1273 GLYPHMETRICS gm;
1274 unsigned int glyph, size = 0;
1275 void *bitmap = NULL, *gl_bitmap = NULL;
1276 int org_alignment;
1277 BOOL ret = TRUE;
1278
1279 funcs->gl.p_glGetIntegerv(GL_UNPACK_ALIGNMENT, &org_alignment);
1280 funcs->gl.p_glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
1281
1282 for (glyph = first; glyph < first + count; glyph++) {
1283 unsigned int needed_size, height, width, width_int;
1284
1285 if (unicode)
1286 needed_size = GetGlyphOutlineW(hdc, glyph, GGO_BITMAP, &gm, 0, NULL, &identity);
1287 else
1288 needed_size = GetGlyphOutlineA(hdc, glyph, GGO_BITMAP, &gm, 0, NULL, &identity);
1289
1290 TRACE("Glyph: %3d / List: %d size %d\n", glyph, listBase, needed_size);
1291 if (needed_size == GDI_ERROR) {
1292 ret = FALSE;
1293 break;
1294 }
1295
1296 if (needed_size > size) {
1297 size = needed_size;
1298 HeapFree(GetProcessHeap(), 0, bitmap);
1299 HeapFree(GetProcessHeap(), 0, gl_bitmap);
1300 bitmap = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
1301 gl_bitmap = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
1302 }
1303 if (needed_size != 0) {
1304 if (unicode)
1305 ret = (GetGlyphOutlineW(hdc, glyph, GGO_BITMAP, &gm,
1306 size, bitmap, &identity) != GDI_ERROR);
1307 else
1308 ret = (GetGlyphOutlineA(hdc, glyph, GGO_BITMAP, &gm,
1309 size, bitmap, &identity) != GDI_ERROR);
1310 if (!ret) break;
1311 }
1312
1313 if (TRACE_ON(wgl)) {
1314 unsigned int bitmask;
1315 unsigned char *bitmap_ = bitmap;
1316
1317 TRACE(" - bbox: %d x %d\n", gm.gmBlackBoxX, gm.gmBlackBoxY);
1318 TRACE(" - origin: (%d, %d)\n", gm.gmptGlyphOrigin.x, gm.gmptGlyphOrigin.y);
1319 TRACE(" - increment: %d - %d\n", gm.gmCellIncX, gm.gmCellIncY);
1320 if (needed_size != 0) {
1321 TRACE(" - bitmap:\n");
1322 for (height = 0; height < gm.gmBlackBoxY; height++) {
1323 TRACE(" ");
1324 for (width = 0, bitmask = 0x80; width < gm.gmBlackBoxX; width++, bitmask >>= 1) {
1325 if (bitmask == 0) {
1326 bitmap_ += 1;
1327 bitmask = 0x80;
1328 }
1329 if (*bitmap_ & bitmask)
1330 TRACE("*");
1331 else
1332 TRACE(" ");
1333 }
1334 bitmap_ += (4 - ((UINT_PTR)bitmap_ & 0x03));
1335 TRACE("\n");
1336 }
1337 }
1338 }
1339
1340 /* In OpenGL, the bitmap is drawn from the bottom to the top... So we need to invert the
1341 * glyph for it to be drawn properly.
1342 */
1343 if (needed_size != 0) {
1344 width_int = (gm.gmBlackBoxX + 31) / 32;
1345 for (height = 0; height < gm.gmBlackBoxY; height++) {
1346 for (width = 0; width < width_int; width++) {
1347 ((int *) gl_bitmap)[(gm.gmBlackBoxY - height - 1) * width_int + width] =
1348 ((int *) bitmap)[height * width_int + width];
1349 }
1350 }
1351 }
1352
1353 funcs->gl.p_glNewList(listBase++, GL_COMPILE);
1354 if (needed_size != 0) {
1355 funcs->gl.p_glBitmap(gm.gmBlackBoxX, gm.gmBlackBoxY,
1356 0 - gm.gmptGlyphOrigin.x, (int) gm.gmBlackBoxY - gm.gmptGlyphOrigin.y,
1357 gm.gmCellIncX, gm.gmCellIncY,
1358 gl_bitmap);
1359 } else {
1360 /* This is the case of 'empty' glyphs like the space character */
1361 funcs->gl.p_glBitmap(0, 0, 0, 0, gm.gmCellIncX, gm.gmCellIncY, NULL);
1362 }
1363 funcs->gl.p_glEndList();
1364 }
1365
1366 funcs->gl.p_glPixelStorei(GL_UNPACK_ALIGNMENT, org_alignment);
1367 HeapFree(GetProcessHeap(), 0, bitmap);
1368 HeapFree(GetProcessHeap(), 0, gl_bitmap);
1369 return ret;
1370 }
1371
1372 /***********************************************************************
1373 * wglUseFontBitmapsA (OPENGL32.@)
1374 */
1375 BOOL WINAPI wglUseFontBitmapsA(HDC hdc, DWORD first, DWORD count, DWORD listBase)
1376 {
1377 return wglUseFontBitmaps_common( hdc, first, count, listBase, FALSE );
1378 }
1379
1380 /***********************************************************************
1381 * wglUseFontBitmapsW (OPENGL32.@)
1382 */
1383 BOOL WINAPI wglUseFontBitmapsW(HDC hdc, DWORD first, DWORD count, DWORD listBase)
1384 {
1385 return wglUseFontBitmaps_common( hdc, first, count, listBase, TRUE );
1386 }
1387
1388 /* FIXME: should probably have a glu.h header */
1389
1390 typedef struct GLUtesselator GLUtesselator;
1391 typedef void (WINAPI *_GLUfuncptr)(void);
1392
1393 #define GLU_TESS_BEGIN 100100
1394 #define GLU_TESS_VERTEX 100101
1395 #define GLU_TESS_END 100102
1396
1397 static GLUtesselator * (WINAPI *pgluNewTess)(void);
1398 static void (WINAPI *pgluDeleteTess)(GLUtesselator *tess);
1399 static void (WINAPI *pgluTessNormal)(GLUtesselator *tess, GLdouble x, GLdouble y, GLdouble z);
1400 static void (WINAPI *pgluTessBeginPolygon)(GLUtesselator *tess, void *polygon_data);
1401 static void (WINAPI *pgluTessEndPolygon)(GLUtesselator *tess);
1402 static void (WINAPI *pgluTessCallback)(GLUtesselator *tess, GLenum which, _GLUfuncptr fn);
1403 static void (WINAPI *pgluTessBeginContour)(GLUtesselator *tess);
1404 static void (WINAPI *pgluTessEndContour)(GLUtesselator *tess);
1405 static void (WINAPI *pgluTessVertex)(GLUtesselator *tess, GLdouble *location, GLvoid* data);
1406
1407 static HMODULE load_libglu(void)
1408 {
1409 static const WCHAR glu32W[] = {'g','l','u','3','2','.','d','l','l',0};
1410 static BOOL already_loaded;
1411 static HMODULE module;
1412
1413 if (already_loaded) return module;
1414 already_loaded = TRUE;
1415
1416 TRACE("Trying to load GLU library\n");
1417 module = LoadLibraryW( glu32W );
1418 if (!module)
1419 {
1420 WARN("Failed to load glu32\n");
1421 return NULL;
1422 }
1423 #define LOAD_FUNCPTR(f) p##f = (void *)GetProcAddress( module, #f )
1424 LOAD_FUNCPTR(gluNewTess);
1425 LOAD_FUNCPTR(gluDeleteTess);
1426 LOAD_FUNCPTR(gluTessBeginContour);
1427 LOAD_FUNCPTR(gluTessNormal);
1428 LOAD_FUNCPTR(gluTessBeginPolygon);
1429 LOAD_FUNCPTR(gluTessCallback);
1430 LOAD_FUNCPTR(gluTessEndContour);
1431 LOAD_FUNCPTR(gluTessEndPolygon);
1432 LOAD_FUNCPTR(gluTessVertex);
1433 #undef LOAD_FUNCPTR
1434 return module;
1435 }
1436
1437 static void fixed_to_double(POINTFX fixed, UINT em_size, GLdouble vertex[3])
1438 {
1439 vertex[0] = (fixed.x.value + (GLdouble)fixed.x.fract / (1 << 16)) / em_size;
1440 vertex[1] = (fixed.y.value + (GLdouble)fixed.y.fract / (1 << 16)) / em_size;
1441 vertex[2] = 0.0;
1442 }
1443
1444 static void WINAPI tess_callback_vertex(GLvoid *vertex)
1445 {
1446 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1447 GLdouble *dbl = vertex;
1448 TRACE("%f, %f, %f\n", dbl[0], dbl[1], dbl[2]);
1449 funcs->gl.p_glVertex3dv(vertex);
1450 }
1451
1452 static void WINAPI tess_callback_begin(GLenum which)
1453 {
1454 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1455 TRACE("%d\n", which);
1456 funcs->gl.p_glBegin(which);
1457 }
1458
1459 static void WINAPI tess_callback_end(void)
1460 {
1461 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1462 TRACE("\n");
1463 funcs->gl.p_glEnd();
1464 }
1465
1466 typedef struct _bezier_vector {
1467 GLdouble x;
1468 GLdouble y;
1469 } bezier_vector;
1470
1471 static double bezier_deviation_squared(const bezier_vector *p)
1472 {
1473 bezier_vector deviation;
1474 bezier_vector vertex;
1475 bezier_vector base;
1476 double base_length;
1477 double dot;
1478
1479 vertex.x = (p[0].x + p[1].x*2 + p[2].x)/4 - p[0].x;
1480 vertex.y = (p[0].y + p[1].y*2 + p[2].y)/4 - p[0].y;
1481
1482 base.x = p[2].x - p[0].x;
1483 base.y = p[2].y - p[0].y;
1484
1485 base_length = sqrt(base.x*base.x + base.y*base.y);
1486 base.x /= base_length;
1487 base.y /= base_length;
1488
1489 dot = base.x*vertex.x + base.y*vertex.y;
1490 dot = min(max(dot, 0.0), base_length);
1491 base.x *= dot;
1492 base.y *= dot;
1493
1494 deviation.x = vertex.x-base.x;
1495 deviation.y = vertex.y-base.y;
1496
1497 return deviation.x*deviation.x + deviation.y*deviation.y;
1498 }
1499
1500 static int bezier_approximate(const bezier_vector *p, bezier_vector *points, FLOAT deviation)
1501 {
1502 bezier_vector first_curve[3];
1503 bezier_vector second_curve[3];
1504 bezier_vector vertex;
1505 int total_vertices;
1506
1507 if(bezier_deviation_squared(p) <= deviation*deviation)
1508 {
1509 if(points)
1510 *points = p[2];
1511 return 1;
1512 }
1513
1514 vertex.x = (p[0].x + p[1].x*2 + p[2].x)/4;
1515 vertex.y = (p[0].y + p[1].y*2 + p[2].y)/4;
1516
1517 first_curve[0] = p[0];
1518 first_curve[1].x = (p[0].x + p[1].x)/2;
1519 first_curve[1].y = (p[0].y + p[1].y)/2;
1520 first_curve[2] = vertex;
1521
1522 second_curve[0] = vertex;
1523 second_curve[1].x = (p[2].x + p[1].x)/2;
1524 second_curve[1].y = (p[2].y + p[1].y)/2;
1525 second_curve[2] = p[2];
1526
1527 total_vertices = bezier_approximate(first_curve, points, deviation);
1528 if(points)
1529 points += total_vertices;
1530 total_vertices += bezier_approximate(second_curve, points, deviation);
1531 return total_vertices;
1532 }
1533
1534 /***********************************************************************
1535 * wglUseFontOutlines_common
1536 */
1537 static BOOL wglUseFontOutlines_common(HDC hdc,
1538 DWORD first,
1539 DWORD count,
1540 DWORD listBase,
1541 FLOAT deviation,
1542 FLOAT extrusion,
1543 int format,
1544 LPGLYPHMETRICSFLOAT lpgmf,
1545 BOOL unicode)
1546 {
1547 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1548 UINT glyph;
1549 GLUtesselator *tess = NULL;
1550 LOGFONTW lf;
1551 HFONT old_font, unscaled_font;
1552 UINT em_size = 1024;
1553 RECT rc;
1554
1555 TRACE("(%p, %d, %d, %d, %f, %f, %d, %p, %s)\n", hdc, first, count,
1556 listBase, deviation, extrusion, format, lpgmf, unicode ? "W" : "A");
1557
1558 if(deviation <= 0.0)
1559 deviation = 1.0/em_size;
1560
1561 if(format == WGL_FONT_POLYGONS)
1562 {
1563 if (!load_libglu())
1564 {
1565 ERR("glu32 is required for this function but isn't available\n");
1566 return FALSE;
1567 }
1568
1569 tess = pgluNewTess();
1570 if(!tess) return FALSE;
1571 pgluTessCallback(tess, GLU_TESS_VERTEX, (_GLUfuncptr)tess_callback_vertex);
1572 pgluTessCallback(tess, GLU_TESS_BEGIN, (_GLUfuncptr)tess_callback_begin);
1573 pgluTessCallback(tess, GLU_TESS_END, tess_callback_end);
1574 }
1575
1576 GetObjectW(GetCurrentObject(hdc, OBJ_FONT), sizeof(lf), &lf);
1577 rc.left = rc.right = rc.bottom = 0;
1578 rc.top = em_size;
1579 DPtoLP(hdc, (POINT*)&rc, 2);
1580 lf.lfHeight = -abs(rc.top - rc.bottom);
1581 lf.lfOrientation = lf.lfEscapement = 0;
1582 unscaled_font = CreateFontIndirectW(&lf);
1583 old_font = SelectObject(hdc, unscaled_font);
1584
1585 for (glyph = first; glyph < first + count; glyph++)
1586 {
1587 DWORD needed;
1588 GLYPHMETRICS gm;
1589 BYTE *buf;
1590 TTPOLYGONHEADER *pph;
1591 TTPOLYCURVE *ppc;
1592 GLdouble *vertices = NULL;
1593 int vertex_total = -1;
1594
1595 if(unicode)
1596 needed = GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
1597 else
1598 needed = GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
1599
1600 if(needed == GDI_ERROR)
1601 goto error;
1602
1603 buf = HeapAlloc(GetProcessHeap(), 0, needed);
1604
1605 if(unicode)
1606 GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
1607 else
1608 GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
1609
1610 TRACE("glyph %d\n", glyph);
1611
1612 if(lpgmf)
1613 {
1614 lpgmf->gmfBlackBoxX = (float)gm.gmBlackBoxX / em_size;
1615 lpgmf->gmfBlackBoxY = (float)gm.gmBlackBoxY / em_size;
1616 lpgmf->gmfptGlyphOrigin.x = (float)gm.gmptGlyphOrigin.x / em_size;
1617 lpgmf->gmfptGlyphOrigin.y = (float)gm.gmptGlyphOrigin.y / em_size;
1618 lpgmf->gmfCellIncX = (float)gm.gmCellIncX / em_size;
1619 lpgmf->gmfCellIncY = (float)gm.gmCellIncY / em_size;
1620
1621 TRACE("%fx%f at %f,%f inc %f,%f\n", lpgmf->gmfBlackBoxX, lpgmf->gmfBlackBoxY,
1622 lpgmf->gmfptGlyphOrigin.x, lpgmf->gmfptGlyphOrigin.y, lpgmf->gmfCellIncX, lpgmf->gmfCellIncY);
1623 lpgmf++;
1624 }
1625
1626 funcs->gl.p_glNewList(listBase++, GL_COMPILE);
1627 funcs->gl.p_glFrontFace(GL_CCW);
1628 if(format == WGL_FONT_POLYGONS)
1629 {
1630 funcs->gl.p_glNormal3d(0.0, 0.0, 1.0);
1631 pgluTessNormal(tess, 0, 0, 1);
1632 pgluTessBeginPolygon(tess, NULL);
1633 }
1634
1635 while(!vertices)
1636 {
1637 if(vertex_total != -1)
1638 vertices = HeapAlloc(GetProcessHeap(), 0, vertex_total * 3 * sizeof(GLdouble));
1639 vertex_total = 0;
1640
1641 pph = (TTPOLYGONHEADER*)buf;
1642 while((BYTE*)pph < buf + needed)
1643 {
1644 GLdouble previous[3];
1645 fixed_to_double(pph->pfxStart, em_size, previous);
1646
1647 if(vertices)
1648 TRACE("\tstart %d, %d\n", pph->pfxStart.x.value, pph->pfxStart.y.value);
1649
1650 if(format == WGL_FONT_POLYGONS)
1651 pgluTessBeginContour(tess);
1652 else
1653 funcs->gl.p_glBegin(GL_LINE_LOOP);
1654
1655 if(vertices)
1656 {
1657 fixed_to_double(pph->pfxStart, em_size, vertices);
1658 if(format == WGL_FONT_POLYGONS)
1659 pgluTessVertex(tess, vertices, vertices);
1660 else
1661 funcs->gl.p_glVertex3d(vertices[0], vertices[1], vertices[2]);
1662 vertices += 3;
1663 }
1664 vertex_total++;
1665
1666 ppc = (TTPOLYCURVE*)((char*)pph + sizeof(*pph));
1667 while((char*)ppc < (char*)pph + pph->cb)
1668 {
1669 int i, j;
1670 int num;
1671
1672 switch(ppc->wType) {
1673 case TT_PRIM_LINE:
1674 for(i = 0; i < ppc->cpfx; i++)
1675 {
1676 if(vertices)
1677 {
1678 TRACE("\t\tline to %d, %d\n",
1679 ppc->apfx[i].x.value, ppc->apfx[i].y.value);
1680 fixed_to_double(ppc->apfx[i], em_size, vertices);
1681 if(format == WGL_FONT_POLYGONS)
1682 pgluTessVertex(tess, vertices, vertices);
1683 else
1684 funcs->gl.p_glVertex3d(vertices[0], vertices[1], vertices[2]);
1685 vertices += 3;
1686 }
1687 fixed_to_double(ppc->apfx[i], em_size, previous);
1688 vertex_total++;
1689 }
1690 break;
1691
1692 case TT_PRIM_QSPLINE:
1693 for(i = 0; i < ppc->cpfx-1; i++)
1694 {
1695 bezier_vector curve[3];
1696 bezier_vector *points;
1697 GLdouble curve_vertex[3];
1698
1699 if(vertices)
1700 TRACE("\t\tcurve %d,%d %d,%d\n",
1701 ppc->apfx[i].x.value, ppc->apfx[i].y.value,
1702 ppc->apfx[i + 1].x.value, ppc->apfx[i + 1].y.value);
1703
1704 curve[0].x = previous[0];
1705 curve[0].y = previous[1];
1706 fixed_to_double(ppc->apfx[i], em_size, curve_vertex);
1707 curve[1].x = curve_vertex[0];
1708 curve[1].y = curve_vertex[1];
1709 fixed_to_double(ppc->apfx[i + 1], em_size, curve_vertex);
1710 curve[2].x = curve_vertex[0];
1711 curve[2].y = curve_vertex[1];
1712 if(i < ppc->cpfx-2)
1713 {
1714 curve[2].x = (curve[1].x + curve[2].x)/2;
1715 curve[2].y = (curve[1].y + curve[2].y)/2;
1716 }
1717 num = bezier_approximate(curve, NULL, deviation);
1718 points = HeapAlloc(GetProcessHeap(), 0, num*sizeof(bezier_vector));
1719 num = bezier_approximate(curve, points, deviation);
1720 vertex_total += num;
1721 if(vertices)
1722 {
1723 for(j=0; j<num; j++)
1724 {
1725 TRACE("\t\t\tvertex at %f,%f\n", points[j].x, points[j].y);
1726 vertices[0] = points[j].x;
1727 vertices[1] = points[j].y;
1728 vertices[2] = 0.0;
1729 if(format == WGL_FONT_POLYGONS)
1730 pgluTessVertex(tess, vertices, vertices);
1731 else
1732 funcs->gl.p_glVertex3d(vertices[0], vertices[1], vertices[2]);
1733 vertices += 3;
1734 }
1735 }
1736 HeapFree(GetProcessHeap(), 0, points);
1737 previous[0] = curve[2].x;
1738 previous[1] = curve[2].y;
1739 }
1740 break;
1741 default:
1742 ERR("\t\tcurve type = %d\n", ppc->wType);
1743 if(format == WGL_FONT_POLYGONS)
1744 pgluTessEndContour(tess);
1745 else
1746 funcs->gl.p_glEnd();
1747 goto error_in_list;
1748 }
1749
1750 ppc = (TTPOLYCURVE*)((char*)ppc + sizeof(*ppc) +
1751 (ppc->cpfx - 1) * sizeof(POINTFX));
1752 }
1753 if(format == WGL_FONT_POLYGONS)
1754 pgluTessEndContour(tess);
1755 else
1756 funcs->gl.p_glEnd();
1757 pph = (TTPOLYGONHEADER*)((char*)pph + pph->cb);
1758 }
1759 }
1760
1761 error_in_list:
1762 if(format == WGL_FONT_POLYGONS)
1763 pgluTessEndPolygon(tess);
1764 funcs->gl.p_glTranslated((GLdouble)gm.gmCellIncX / em_size, (GLdouble)gm.gmCellIncY / em_size, 0.0);
1765 funcs->gl.p_glEndList();
1766 HeapFree(GetProcessHeap(), 0, buf);
1767 HeapFree(GetProcessHeap(), 0, vertices);
1768 }
1769
1770 error:
1771 DeleteObject(SelectObject(hdc, old_font));
1772 if(format == WGL_FONT_POLYGONS)
1773 pgluDeleteTess(tess);
1774 return TRUE;
1775
1776 }
1777
1778 /***********************************************************************
1779 * wglUseFontOutlinesA (OPENGL32.@)
1780 */
1781 BOOL WINAPI wglUseFontOutlinesA(HDC hdc,
1782 DWORD first,
1783 DWORD count,
1784 DWORD listBase,
1785 FLOAT deviation,
1786 FLOAT extrusion,
1787 int format,
1788 LPGLYPHMETRICSFLOAT lpgmf)
1789 {
1790 return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, FALSE);
1791 }
1792
1793 /***********************************************************************
1794 * wglUseFontOutlinesW (OPENGL32.@)
1795 */
1796 BOOL WINAPI wglUseFontOutlinesW(HDC hdc,
1797 DWORD first,
1798 DWORD count,
1799 DWORD listBase,
1800 FLOAT deviation,
1801 FLOAT extrusion,
1802 int format,
1803 LPGLYPHMETRICSFLOAT lpgmf)
1804 {
1805 return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, TRUE);
1806 }
1807
1808 /***********************************************************************
1809 * glDebugEntry (OPENGL32.@)
1810 */
1811 GLint WINAPI glDebugEntry( GLint unknown1, GLint unknown2 )
1812 {
1813 return 0;
1814 }
1815
1816 static GLubyte *filter_extensions_list(const char *extensions, const char *disabled)
1817 {
1818 char *p, *str;
1819 const char *end;
1820
1821 p = str = HeapAlloc(GetProcessHeap(), 0, strlen(extensions) + 2);
1822 if (!str)
1823 return NULL;
1824
1825 TRACE( "GL_EXTENSIONS:\n" );
1826
1827 for (;;)
1828 {
1829 while (*extensions == ' ')
1830 extensions++;
1831 if (!*extensions)
1832 break;
1833 if (!(end = strchr(extensions, ' ')))
1834 end = extensions + strlen(extensions);
1835 memcpy(p, extensions, end - extensions);
1836 p[end - extensions] = 0;
1837 if (!has_extension(disabled, p, strlen(p)))
1838 {
1839 TRACE("++ %s\n", p);
1840 p += end - extensions;
1841 *p++ = ' ';
1842 }
1843 else
1844 {
1845 TRACE("-- %s (disabled by config)\n", p);
1846 }
1847 extensions = end;
1848 }
1849 *p = 0;
1850 return (GLubyte *)str;
1851 }
1852
1853 static GLuint *filter_extensions_index(const char *disabled)
1854 {
1855 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1856 const char *ext, *end, *gl_ext;
1857 GLuint *disabled_exts, *new_disabled_exts;
1858 unsigned int i = 0, j, disabled_size;
1859 GLint extensions_count;
1860
1861 if (!funcs->ext.p_glGetStringi)
1862 {
1863 void **func_ptr = (void **)&funcs->ext.p_glGetStringi;
1864
1865 *func_ptr = funcs->wgl.p_wglGetProcAddress("glGetStringi");
1866 if (!funcs->ext.p_glGetStringi)
1867 return NULL;
1868 }
1869
1870 funcs->gl.p_glGetIntegerv(GL_NUM_EXTENSIONS, &extensions_count);
1871 disabled_size = 2;
1872 disabled_exts = HeapAlloc(GetProcessHeap(), 0, disabled_size * sizeof(*disabled_exts));
1873 if (!disabled_exts)
1874 return NULL;
1875
1876 TRACE( "GL_EXTENSIONS:\n" );
1877
1878 for (j = 0; j < extensions_count; ++j)
1879 {
1880 gl_ext = (const char *)funcs->ext.p_glGetStringi(GL_EXTENSIONS, j);
1881 ext = disabled;
1882 for (;;)
1883 {
1884 while (*ext == ' ')
1885 ext++;
1886 if (!*ext)
1887 {
1888 TRACE("++ %s\n", gl_ext);
1889 break;
1890 }
1891 if (!(end = strchr(ext, ' ')))
1892 end = ext + strlen(ext);
1893
1894 if (!strncmp(gl_ext, ext, end - ext) && !gl_ext[end - ext])
1895 {
1896 if (i + 1 == disabled_size)
1897 {
1898 disabled_size *= 2;
1899 new_disabled_exts = HeapReAlloc(GetProcessHeap(), 0, disabled_exts,
1900 disabled_size * sizeof(*disabled_exts));
1901 if (!new_disabled_exts)
1902 {
1903 disabled_exts[i] = ~0u;
1904 return disabled_exts;
1905 }
1906 disabled_exts = new_disabled_exts;
1907 }
1908 TRACE("-- %s (disabled by config)\n", gl_ext);
1909 disabled_exts[i++] = j;
1910 break;
1911 }
1912 ext = end;
1913 }
1914 }
1915 disabled_exts[i] = ~0u;
1916 return disabled_exts;
1917 }
1918
1919 /* build the extension string by filtering out the disabled extensions */
1920 static BOOL filter_extensions(const char *extensions, GLubyte **exts_list, GLuint **disabled_exts)
1921 {
1922 static const char *disabled;
1923
1924 if (!disabled)
1925 {
1926 HKEY hkey;
1927 DWORD size;
1928 char *str = NULL;
1929
1930 /* @@ Wine registry key: HKCU\Software\Wine\OpenGL */
1931 if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\OpenGL", &hkey ))
1932 {
1933 if (!RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, NULL, &size ))
1934 {
1935 str = HeapAlloc( GetProcessHeap(), 0, size );
1936 if (RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, (BYTE *)str, &size )) *str = 0;
1937 }
1938 RegCloseKey( hkey );
1939 }
1940 if (str)
1941 {
1942 if (InterlockedCompareExchangePointer( (void **)&disabled, str, NULL ))
1943 HeapFree( GetProcessHeap(), 0, str );
1944 }
1945 else disabled = "";
1946 }
1947
1948 if (!disabled[0])
1949 return FALSE;
1950
1951 if (extensions && !*exts_list)
1952 *exts_list = filter_extensions_list(extensions, disabled);
1953
1954 if (!*disabled_exts)
1955 *disabled_exts = filter_extensions_index(disabled);
1956
1957 return (exts_list && *exts_list) || *disabled_exts;
1958 }
1959
1960 /***********************************************************************
1961 * glGetString (OPENGL32.@)
1962 */
1963 const GLubyte * WINAPI glGetString( GLenum name )
1964 {
1965 const struct opengl_funcs *funcs = NtCurrentTeb()->glTable;
1966 const GLubyte *ret = funcs->gl.p_glGetString( name );
1967
1968 if (name == GL_EXTENSIONS && ret)
1969 {
1970 struct wgl_handle *ptr = get_current_context_ptr();
1971 if (ptr->u.context->extensions ||
1972 filter_extensions((const char *)ret, &ptr->u.context->extensions, &ptr->u.context->disabled_exts))
1973 ret = ptr->u.context->extensions;
1974 }
1975 return ret;
1976 }
1977
1978 /***********************************************************************
1979 * OpenGL initialisation routine
1980 */
1981 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
1982 {
1983 switch(reason)
1984 {
1985 case DLL_PROCESS_ATTACH:
1986 NtCurrentTeb()->glTable = &null_opengl_funcs;
1987 break;
1988 case DLL_THREAD_ATTACH:
1989 NtCurrentTeb()->glTable = &null_opengl_funcs;
1990 break;
1991 }
1992 return TRUE;
1993 }
Windows API implementation