source: trunk/src/opengl/mesa/wgl.c@ 3721

Last change on this file since 3721 was 3598, checked in by jeroen, 25 years ago

* empty log message *
File size: 14.5 KB
Line 
1/* $Id: wgl.c,v 1.4 2000-05-23 20:41:04 jeroen Exp $ */
2
3/*
4* This library is free software; you can redistribute it and/or
5* modify it under the terms of the GNU Library General Public
6* License as published by the Free Software Foundation; either
7* version 2 of the License, or (at your option) any later version.
8*
9* This library is distributed in the hope that it will be useful,
10* but WITHOUT ANY WARRANTY; without even the implied warranty of
11* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12* Library General Public License for more details.
13*
14* You should have received a copy of the GNU Library General Public
15* License along with this library; if not, write to the Free
16* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17*
18*/
19
20/*
21* File name : wgl.c
22* WGL stuff. Added by Oleg Letsinsky, ajl@ultersys.ru
23* Some things originated from the 3Dfx WGL functions
24*/
25
26#if defined(WIN32) || defined(__WIN32OS2__)
27
28#ifdef __cplusplus
29extern "C" {
30#endif
31#include <windows.h>
32#include <winerror.h>
33
34#ifdef __cplusplus
35}
36#endif
37
38#include "glheader.h"
39#include "types.h"
40#include "context.h"
41#include "wmesadef.h"
42#include "wmesa.h"
43
44#define MAX_MESA_ATTRS 20
45
46struct __extensions__
47{
48 PROC proc;
49 char *name;
50};
51
52struct __pixelformat__
53{
54 PIXELFORMATDESCRIPTOR pfd;
55 GLboolean doubleBuffered;
56};
57
58struct __extensions__ ext[] = {
59
60#ifdef GL_EXT_polygon_offset
61 { (PROC)glPolygonOffsetEXT, "glPolygonOffsetEXT" },
62#endif
63 { (PROC)glBlendEquationEXT, "glBlendEquationEXT" },
64 { (PROC)glBlendColorEXT, "glBlendColorExt" },
65 { (PROC)glVertexPointerEXT, "glVertexPointerEXT" },
66 { (PROC)glNormalPointerEXT, "glNormalPointerEXT" },
67 { (PROC)glColorPointerEXT, "glColorPointerEXT" },
68 { (PROC)glIndexPointerEXT, "glIndexPointerEXT" },
69 { (PROC)glTexCoordPointerEXT, "glTexCoordPointer" },
70 { (PROC)glEdgeFlagPointerEXT, "glEdgeFlagPointerEXT" },
71 { (PROC)glGetPointervEXT, "glGetPointervEXT" },
72 { (PROC)glArrayElementEXT, "glArrayElementEXT" },
73 { (PROC)glDrawArraysEXT, "glDrawArrayEXT" },
74 { (PROC)glAreTexturesResidentEXT, "glAreTexturesResidentEXT" },
75 { (PROC)glBindTextureEXT, "glBindTextureEXT" },
76 { (PROC)glDeleteTexturesEXT, "glDeleteTexturesEXT" },
77 { (PROC)glGenTexturesEXT, "glGenTexturesEXT" },
78 { (PROC)glIsTextureEXT, "glIsTextureEXT" },
79 { (PROC)glPrioritizeTexturesEXT, "glPrioritizeTexturesEXT" },
80 { (PROC)glCopyTexSubImage3DEXT, "glCopyTexSubImage3DEXT" },
81 { (PROC)glTexImage3DEXT, "glTexImage3DEXT" },
82 { (PROC)glTexSubImage3DEXT, "glTexSubImage3DEXT" },
83 { (PROC)glColorTableEXT, "glColorTableEXT" },
84 { (PROC)glColorSubTableEXT, "glColorSubTableEXT" },
85 { (PROC)glGetColorTableEXT, "glGetColorTableEXT" },
86 { (PROC)glGetColorTableParameterfvEXT, "glGetColorTableParameterfvEXT" },
87 { (PROC)glGetColorTableParameterivEXT, "glGetColorTableParameterivEXT" },
88 { (PROC)glPointParameterfEXT, "glPointParameterfEXT" },
89 { (PROC)glPointParameterfvEXT, "glPointParameterfvEXT" },
90 { (PROC)glBlendFuncSeparateINGR, "glBlendFuncSeparateINGR" },
91 { (PROC)glLockArraysEXT, "glLockArraysEXT" },
92 { (PROC)glUnlockArraysEXT, "glUnlockArraysEXT" }
93};
94
95int qt_ext = sizeof(ext) / sizeof(ext[0]);
96
97struct __pixelformat__ pix[] =
98{
99 { { sizeof(PIXELFORMATDESCRIPTOR), 1,
100 PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_GENERIC_FORMAT|PFD_DOUBLEBUFFER|PFD_SWAP_COPY,
101 PFD_TYPE_RGBA,
102 24, 8, 0, 8, 8, 8, 16, 8, 24,
103 0, 0, 0, 0, 0, 16, 8, 0, 0, 0, 0, 0, 0 },
104 GL_TRUE
105 },
106 { { sizeof(PIXELFORMATDESCRIPTOR), 1,
107 PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_GENERIC_FORMAT,
108 PFD_TYPE_RGBA,
109 24, 8, 0, 8, 8, 8, 16, 8, 24,
110 0, 0, 0, 0, 0, 16, 8, 0, 0, 0, 0, 0, 0 },
111 GL_FALSE
112 },
113};
114
115int qt_pix = sizeof(pix) / sizeof(pix[0]);
116
117typedef struct {
118 WMesaContext ctx;
119 HDC hdc;
120} MesaWglCtx;
121
122#define MESAWGL_CTX_MAX_COUNT 20
123
124static MesaWglCtx wgl_ctx[MESAWGL_CTX_MAX_COUNT];
125
126static unsigned ctx_count = 0;
127static unsigned ctx_current = -1;
128static unsigned curPFD = 0;
129
130GLAPI BOOL GLWINAPI wglCopyContext(HGLRC hglrcSrc,HGLRC hglrcDst,UINT mask)
131{
132 return(FALSE);
133}
134
135GLAPI HGLRC GLWINAPI wglCreateContext(HDC hdc)
136{
137 HWND hWnd;
138 int i = 0;
139 if(!(hWnd = WindowFromDC(hdc)))
140 {
141 SetLastError(0);
142 return(NULL);
143 }
144 if (!ctx_count)
145 {
146 for(i=0;i<MESAWGL_CTX_MAX_COUNT;i++)
147 {
148 wgl_ctx[i].ctx = NULL;
149 wgl_ctx[i].hdc = NULL;
150 }
151 }
152 for( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ )
153 {
154 if ( wgl_ctx[i].ctx == NULL )
155 {
156 wgl_ctx[i].ctx = WMesaCreateContext( hWnd, NULL, GL_TRUE,
157 pix[curPFD-1].doubleBuffered );
158 if (wgl_ctx[i].ctx == NULL)
159 break;
160 wgl_ctx[i].hdc = hdc;
161 ctx_count++;
162 return ((HGLRC)wgl_ctx[i].ctx);
163 }
164 }
165 SetLastError(0);
166 return(NULL);
167}
168
169GLAPI BOOL GLWINAPI wglDeleteContext(HGLRC hglrc)
170{
171 int i;
172 for ( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ )
173 {
174 if ( wgl_ctx[i].ctx == (PWMC) hglrc )
175 {
176 WMesaMakeCurrent((PWMC) hglrc);
177 WMesaDestroyContext();
178 wgl_ctx[i].ctx = NULL;
179 wgl_ctx[i].hdc = NULL;
180 ctx_count--;
181 return(TRUE);
182 }
183 }
184 SetLastError(0);
185 return(FALSE);
186}
187
188GLAPI HGLRC GLWINAPI wglCreateLayerContext(HDC hdc,int iLayerPlane)
189{
190 SetLastError(0);
191 return(NULL);
192}
193
194GLAPI HGLRC GLWINAPI wglGetCurrentContext(VOID)
195{
196 if (ctx_current < 0)
197 return 0;
198 else
199 return (HGLRC) wgl_ctx[ctx_current].ctx;
200}
201
202GLAPI HDC GLWINAPI wglGetCurrentDC(VOID)
203{
204 if (ctx_current < 0)
205 return 0;
206 else
207 return wgl_ctx[ctx_current].hdc;
208}
209
210GLAPI BOOL GLWINAPI wglMakeCurrent(HDC hdc,HGLRC hglrc)
211{
212 int i;
213
214 /* new code suggested by Andy Sy */
215 if (!hdc || !hglrc) {
216 WMesaMakeCurrent(NULL);
217 ctx_current = -1;
218 return TRUE;
219 }
220
221 for ( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ )
222 {
223 if ( wgl_ctx[i].ctx == (PWMC) hglrc )
224 {
225 wgl_ctx[i].hdc = hdc;
226 WMesaMakeCurrent( (WMesaContext) hglrc );
227 ctx_current = i;
228 return TRUE;
229 }
230 }
231 return FALSE;
232}
233
234GLAPI BOOL GLWINAPI wglShareLists(HGLRC hglrc1,HGLRC hglrc2)
235{
236 return(TRUE);
237}
238
239
240static FIXED FixedFromDouble(double d)
241{
242 long l = (long) (d * 65536L);
243 return *(FIXED *)&l;
244}
245
246
247GLAPI BOOL GLWINAPI wglUseFontBitmapsA(HDC hdc, DWORD first,
248 DWORD count, DWORD listBase)
249{
250 int i;
251 GLuint font_list;
252 DWORD size;
253 GLYPHMETRICS gm;
254 HANDLE hBits;
255 LPSTR lpBits;
256 MAT2 mat;
257
258 if (first<0)
259 return FALSE;
260 if (count<0)
261 return FALSE;
262 if (listBase<0)
263 return FALSE;
264
265 font_list = glGenLists( count );
266 if(font_list == 0)
267 return FALSE;
268
269 mat.eM11 = FixedFromDouble(1);
270 mat.eM12 = FixedFromDouble(0);
271 mat.eM21 = FixedFromDouble(0);
272 mat.eM22 = FixedFromDouble(1);
273
274 memset(&gm,0,sizeof(gm));
275
276 for (i = 0; i < count; i++)
277 {
278 glNewList( font_list+i, GL_COMPILE );
279
280 /* allocate space for the bitmap/outline */
281 size = GetGlyphOutline(hdc, first + i, GGO_BITMAP, &gm, 0, NULL, &mat);
282 if (size == GDI_ERROR)
283 {
284 DWORD err;
285 err = GetLastError();
286 return(FALSE);
287 }
288
289 hBits = GlobalAlloc(GHND, size);
290 lpBits = (LPSTR)GlobalLock(hBits);
291
292 GetGlyphOutline(hdc, /* handle to device context*/
293 first + i, /* character to query*/
294 GGO_BITMAP, /* format of data to return*/
295 &gm, /* pointer to structure for metrics*/
296 size, /* size of buffer for data*/
297 lpBits, /* pointer to buffer for data*/
298 &mat /* pointer to transformation*/
299 /* matrix structure */
300 );
301 if (*lpBits == GDI_ERROR)
302 {
303 DWORD err;
304 err = GetLastError();
305
306 GlobalUnlock(hBits);
307 GlobalFree(hBits);
308
309 return(FALSE);
310 }
311
312 glBitmap(gm.gmBlackBoxX,gm.gmBlackBoxY,
313 gm.gmptGlyphOrigin.x,
314 gm.gmptGlyphOrigin.y,
315 gm.gmCellIncX,gm.gmCellIncY,
316 (const GLubyte * )lpBits);
317
318 GlobalUnlock(hBits);
319 GlobalFree(hBits);
320
321 glEndList( );
322 }
323
324 return TRUE;
325}
326
327GLAPI BOOL GLWINAPI wglUseFontBitmapsW(HDC hdc,DWORD first,DWORD count,DWORD listBase)
328{
329 return FALSE;
330}
331
332GLAPI BOOL GLWINAPI wglUseFontOutlinesA(HDC hdc,DWORD first,DWORD count,
333 DWORD listBase,FLOAT deviation,
334 FLOAT extrusion,int format,
335 LPGLYPHMETRICSFLOAT lpgmf)
336{
337 SetLastError(0);
338 return(FALSE);
339}
340
341GLAPI BOOL GLWINAPI wglUseFontOutlinesW(HDC hdc,DWORD first,DWORD count,
342 DWORD listBase,FLOAT deviation,
343 FLOAT extrusion,int format,
344 LPGLYPHMETRICSFLOAT lpgmf)
345{
346 SetLastError(0);
347 return(FALSE);
348}
349
350GLAPI BOOL GLWINAPI wglDescribeLayerPlane(HDC hdc,int iPixelFormat,
351 int iLayerPlane,UINT nBytes,
352 LAYERPLANEDESCRIPTOR *plpd)
353{
354 SetLastError(0);
355 return(FALSE);
356}
357
358GLAPI int GLWINAPI wglSetLayerPaletteEntries(HDC hdc,int iLayerPlane,
359 int iStart,int cEntries,
360 CONST COLORREF *pcr)
361{
362 SetLastError(0);
363 return(0);
364}
365
366GLAPI int GLWINAPI wglGetLayerPaletteEntries(HDC hdc,int iLayerPlane,
367 int iStart,int cEntries,
368 COLORREF *pcr)
369{
370 SetLastError(0);
371 return(0);
372}
373
374GLAPI BOOL GLWINAPI wglRealizeLayerPalette(HDC hdc,int iLayerPlane,BOOL bRealize)
375{
376 SetLastError(0);
377 return(FALSE);
378}
379
380GLAPI BOOL GLWINAPI wglSwapLayerBuffers(HDC hdc,UINT fuPlanes)
381{
382 if( !hdc )
383 {
384 WMesaSwapBuffers();
385 return(TRUE);
386 }
387 SetLastError(0);
388 return(FALSE);
389}
390
391GLAPI int GLWINAPI wglChoosePixelFormat(HDC hdc,
392 CONST PIXELFORMATDESCRIPTOR *ppfd)
393{
394 int i,best = -1,bestdelta = 0x7FFFFFFF,delta,qt_valid_pix;
395
396 qt_valid_pix = qt_pix;
397 if(ppfd->nSize != sizeof(PIXELFORMATDESCRIPTOR) || ppfd->nVersion != 1)
398 {
399 SetLastError(0);
400 return(0);
401 }
402 for(i = 0;i < qt_valid_pix;i++)
403 {
404 delta = 0;
405 if(
406 (ppfd->dwFlags & PFD_DRAW_TO_WINDOW) &&
407 !(pix[i].pfd.dwFlags & PFD_DRAW_TO_WINDOW))
408 continue;
409 if(
410 (ppfd->dwFlags & PFD_DRAW_TO_BITMAP) &&
411 !(pix[i].pfd.dwFlags & PFD_DRAW_TO_BITMAP))
412 continue;
413 if(
414 (ppfd->dwFlags & PFD_SUPPORT_GDI) &&
415 !(pix[i].pfd.dwFlags & PFD_SUPPORT_GDI))
416 continue;
417 if(
418 (ppfd->dwFlags & PFD_SUPPORT_OPENGL) &&
419 !(pix[i].pfd.dwFlags & PFD_SUPPORT_OPENGL))
420 continue;
421 if(
422 !(ppfd->dwFlags & PFD_DOUBLEBUFFER_DONTCARE) &&
423 ((ppfd->dwFlags & PFD_DOUBLEBUFFER) != (pix[i].pfd.dwFlags & PFD_DOUBLEBUFFER)))
424 continue;
425 if(
426 !(ppfd->dwFlags & PFD_STEREO_DONTCARE) &&
427 ((ppfd->dwFlags & PFD_STEREO) != (pix[i].pfd.dwFlags & PFD_STEREO)))
428 continue;
429 if(ppfd->iPixelType != pix[i].pfd.iPixelType)
430 delta++;
431 if(delta < bestdelta)
432 {
433 best = i + 1;
434 bestdelta = delta;
435 if(bestdelta == 0)
436 break;
437 }
438 }
439 if(best == -1)
440 {
441 SetLastError(0);
442 return(0);
443 }
444 return(best);
445}
446
447GLAPI int GLWINAPI wglDescribePixelFormat(HDC hdc,int iPixelFormat,UINT nBytes,
448 LPPIXELFORMATDESCRIPTOR ppfd)
449{
450 int qt_valid_pix;
451
452 qt_valid_pix = qt_pix;
453 if(iPixelFormat < 1 || iPixelFormat > qt_valid_pix || nBytes != sizeof(PIXELFORMATDESCRIPTOR))
454 {
455 SetLastError(0);
456 return(0);
457 }
458 *ppfd = pix[iPixelFormat - 1].pfd;
459 return(qt_valid_pix);
460}
461
462/*
463* GetProcAddress - return the address of an appropriate extension
464*/
465GLAPI PROC GLWINAPI wglGetProcAddress(LPCSTR lpszProc)
466{
467 int i;
468 for(i = 0;i < qt_ext;i++)
469 if(!strcmp(lpszProc,ext[i].name))
470 return(ext[i].proc);
471
472 SetLastError(0);
473 return(NULL);
474}
475
476GLAPI int GLWINAPI wglGetPixelFormat(HDC hdc)
477{
478 if(curPFD == 0)
479 {
480 SetLastError(0);
481 return(0);
482 }
483 return(curPFD);
484}
485
486GLAPI BOOL GLWINAPI wglSetPixelFormat(HDC hdc, int iPixelFormat,
487 PIXELFORMATDESCRIPTOR *ppfd)
488{
489 int qt_valid_pix;
490
491 qt_valid_pix = qt_pix;
492#ifdef __WIN32OS2__
493 if(iPixelFormat < 1 || iPixelFormat > qt_valid_pix || (ppfd && ppfd->nSize != sizeof(PIXELFORMATDESCRIPTOR)))
494#else
495 if(iPixelFormat < 1 || iPixelFormat > qt_valid_pix || ppfd->nSize != sizeof(PIXELFORMATDESCRIPTOR))
496#endif
497 {
498 SetLastError(0);
499 return(FALSE);
500 }
501 curPFD = iPixelFormat;
502 return(TRUE);
503}
504
505GLAPI BOOL GLWINAPI wglSwapBuffers(HDC hdc)
506{
507_heap_check();
508
509 if (ctx_current < 0)
510 return FALSE;
511
512 if(wgl_ctx[ctx_current].ctx == NULL) {
513 SetLastError(0);
514 return(FALSE);
515 }
516 WMesaSwapBuffers();
517 return(TRUE);
518}
519
520#endif /* WIN32 or __WIN32OS2__ */
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