source: trunk/src/opengl/mesa/context.c@ 3597

Last change on this file since 3597 was 2970, checked in by sandervl, 25 years ago

Reapplied TLS fixes
File size: 74.3 KB
Line 
1/* $Id: context.c,v 1.3 2000-03-02 13:27:30 sandervl Exp $ */
2
3/*
4 * Mesa 3-D graphics library
5 * Version: 3.1
6 *
7 * Copyright (C) 1999 Brian Paul All Rights Reserved.
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included
17 * in all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
23 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 */
26
27
28/* $XFree86: xc/lib/GL/mesa/src/context.c,v 1.4 1999/04/04 00:20:21 dawes Exp $ */
29
30/*
31 * If multi-threading is enabled (-DTHREADS) then each thread has it's
32 * own rendering context. A thread obtains the pointer to its GLcontext
33 * with the gl_get_thread_context() function. Otherwise, the global
34 * pointer, CC, points to the current context used by all threads in
35 * the address space.
36 */
37
38#ifdef __WIN32OS2__
39#include <os2win.h>
40#ifdef DIVE
41#include "types.h"
42#include "wmesadef.h"
43#include "mesadive.h"
44#endif
45#endif
46
47#ifdef PC_HEADER
48#include "all.h"
49#else
50#ifndef XFree86Server
51#include <assert.h>
52#include <math.h>
53#include <stdio.h>
54#include <stdlib.h>
55#include <string.h>
56#else
57#include "GL/xf86glx.h"
58#endif
59#include "accum.h"
60#include "alphabuf.h"
61#include "api.h"
62#include "clip.h"
63#include "context.h"
64#include "cva.h"
65#include "depth.h"
66#include "dlist.h"
67#include "eval.h"
68#include "enums.h"
69#include "extensions.h"
70#include "fog.h"
71#include "get.h"
72#include "hash.h"
73#include "light.h"
74#include "lines.h"
75#include "dlist.h"
76#include "macros.h"
77#include "matrix.h"
78#include "mmath.h"
79#include "pb.h"
80#include "pipeline.h"
81#include "points.h"
82#include "pointers.h"
83#include "quads.h"
84#include "shade.h"
85#include "simple_list.h"
86#include "stencil.h"
87#include "stages.h"
88#include "triangle.h"
89#include "translate.h"
90#include "teximage.h"
91#include "texobj.h"
92#include "texstate.h"
93#include "texture.h"
94#include "types.h"
95#include "varray.h"
96#include "vb.h"
97#include "vbcull.h"
98#include "vbfill.h"
99#include "vbrender.h"
100#include "vbxform.h"
101#include "vertices.h"
102#include "xform.h"
103#include "config.h"
104#endif
105
106
107/*
108 * Memory allocation functions. Called via the MALLOC, CALLOC and
109 * FREE macros when DEBUG symbol is defined.
110 * You might want to set breakpoints on these functions or plug in
111 * other memory allocation functions. The Mesa sources should only
112 * use the MALLOC and FREE macros (which could also be overriden).
113 *
114 * XXX these functions should probably go into a new glmemory.c file.
115 */
116
117/*
118 * Allocate memory (uninitialized)
119 */
120void *gl_malloc(size_t bytes)
121{
122 return malloc(bytes);
123}
124
125/*
126 * Allocate memory and initialize to zero.
127 */
128void *gl_calloc(size_t bytes)
129{
130 return calloc(1, bytes);
131}
132
133/*
134 * Free memory
135 */
136void gl_free(void *ptr)
137{
138 free(ptr);
139}
140
141
142/**********************************************************************/
143/***** Context and Thread management *****/
144/**********************************************************************/
145
146
147#ifdef THREADS
148
149#include "mthreads.h" /* Mesa platform independent threads interface*/
150
151#ifdef __WIN32OS2__
152//SvL: Initialize this struct
153static MesaTSD mesa_ctx_tsd = {-1, -1};
154#else
155static MesaTSD mesa_ctx_tsd;
156#endif
157
158static void mesa_ctx_thread_init() {
159 MesaInitTSD(&mesa_ctx_tsd);
160}
161
162GLcontext *gl_get_thread_context( void ) {
163#ifdef __WIN32OS2__
164 return (GLcontext *) MesaGetTSD(&mesa_ctx_tsd, mesa_ctx_thread_init);
165#else
166 return (GLcontext *) MesaGetTSD(&mesa_ctx_tsd);
167#endif
168}
169
170static void set_thread_context( GLcontext *ctx ) {
171 MesaSetTSD(&mesa_ctx_tsd, ctx, mesa_ctx_thread_init);
172}
173
174
175#else
176
177/* One Current Context pointer for all threads in the address space */
178GLcontext *CC = NULL;
179struct immediate *CURRENT_INPUT = NULL;
180
181#endif /*THREADS*/
182
183
184
185
186/**********************************************************************/
187/***** Profiling functions *****/
188/**********************************************************************/
189
190#ifdef PROFILE
191
192#include <sys/times.h>
193#include <sys/param.h>
194
195
196/*
197 * Return system time in seconds.
198 * NOTE: this implementation may not be very portable!
199 */
200GLdouble gl_time( void )
201{
202 static GLdouble prev_time = 0.0;
203 static GLdouble time;
204 struct tms tm;
205 clock_t clk;
206
207 clk = times(&tm);
208
209#ifdef CLK_TCK
210 time = (double)clk / (double)CLK_TCK;
211#else
212 time = (double)clk / (double)HZ;
213#endif
214
215 if (time>prev_time) {
216 prev_time = time;
217 return time;
218 }
219 else {
220 return prev_time;
221 }
222}
223
224/*
225 * Reset the timing/profiling counters
226 */
227static void init_timings( GLcontext *ctx )
228{
229 ctx->BeginEndCount = 0;
230 ctx->BeginEndTime = 0.0;
231 ctx->VertexCount = 0;
232 ctx->VertexTime = 0.0;
233 ctx->PointCount = 0;
234 ctx->PointTime = 0.0;
235 ctx->LineCount = 0;
236 ctx->LineTime = 0.0;
237 ctx->PolygonCount = 0;
238 ctx->PolygonTime = 0.0;
239 ctx->ClearCount = 0;
240 ctx->ClearTime = 0.0;
241 ctx->SwapCount = 0;
242 ctx->SwapTime = 0.0;
243}
244
245
246/*
247 * Print the accumulated timing/profiling data.
248 */
249static void print_timings( GLcontext *ctx )
250{
251 GLdouble beginendrate;
252 GLdouble vertexrate;
253 GLdouble pointrate;
254 GLdouble linerate;
255 GLdouble polygonrate;
256 GLdouble overhead;
257 GLdouble clearrate;
258 GLdouble swaprate;
259 GLdouble avgvertices;
260
261 if (ctx->BeginEndTime>0.0) {
262 beginendrate = ctx->BeginEndCount / ctx->BeginEndTime;
263 }
264 else {
265 beginendrate = 0.0;
266 }
267 if (ctx->VertexTime>0.0) {
268 vertexrate = ctx->VertexCount / ctx->VertexTime;
269 }
270 else {
271 vertexrate = 0.0;
272 }
273 if (ctx->PointTime>0.0) {
274 pointrate = ctx->PointCount / ctx->PointTime;
275 }
276 else {
277 pointrate = 0.0;
278 }
279 if (ctx->LineTime>0.0) {
280 linerate = ctx->LineCount / ctx->LineTime;
281 }
282 else {
283 linerate = 0.0;
284 }
285 if (ctx->PolygonTime>0.0) {
286 polygonrate = ctx->PolygonCount / ctx->PolygonTime;
287 }
288 else {
289 polygonrate = 0.0;
290 }
291 if (ctx->ClearTime>0.0) {
292 clearrate = ctx->ClearCount / ctx->ClearTime;
293 }
294 else {
295 clearrate = 0.0;
296 }
297 if (ctx->SwapTime>0.0) {
298 swaprate = ctx->SwapCount / ctx->SwapTime;
299 }
300 else {
301 swaprate = 0.0;
302 }
303
304 if (ctx->BeginEndCount>0) {
305 avgvertices = (GLdouble) ctx->VertexCount / (GLdouble) ctx->BeginEndCount;
306 }
307 else {
308 avgvertices = 0.0;
309 }
310
311 overhead = ctx->BeginEndTime - ctx->VertexTime - ctx->PointTime
312 - ctx->LineTime - ctx->PolygonTime;
313
314
315 printf(" Count Time (s) Rate (/s) \n");
316 printf("--------------------------------------------------------\n");
317 printf("glBegin/glEnd %7d %8.3f %10.3f\n",
318 ctx->BeginEndCount, ctx->BeginEndTime, beginendrate);
319 printf(" vertexes transformed %7d %8.3f %10.3f\n",
320 ctx->VertexCount, ctx->VertexTime, vertexrate );
321 printf(" points rasterized %7d %8.3f %10.3f\n",
322 ctx->PointCount, ctx->PointTime, pointrate );
323 printf(" lines rasterized %7d %8.3f %10.3f\n",
324 ctx->LineCount, ctx->LineTime, linerate );
325 printf(" polygons rasterized %7d %8.3f %10.3f\n",
326 ctx->PolygonCount, ctx->PolygonTime, polygonrate );
327 printf(" overhead %8.3f\n", overhead );
328 printf("glClear %7d %8.3f %10.3f\n",
329 ctx->ClearCount, ctx->ClearTime, clearrate );
330 printf("SwapBuffers %7d %8.3f %10.3f\n",
331 ctx->SwapCount, ctx->SwapTime, swaprate );
332 printf("\n");
333
334 printf("Average number of vertices per begin/end: %8.3f\n", avgvertices );
335}
336#endif
337
338
339
340
341
342/**********************************************************************/
343/***** Context allocation, initialization, destroying *****/
344/**********************************************************************/
345
346
347/*
348 * This function just calls all the various one-time-init functions in Mesa.
349 */
350static void one_time_init( void )
351{
352 static GLboolean alreadyCalled = GL_FALSE;
353
354 if (!alreadyCalled) {
355 gl_init_clip();
356 gl_init_eval();
357 gl_init_fog();
358 gl_init_math();
359 gl_init_lists();
360 gl_init_shade();
361 gl_init_texture();
362 gl_init_transformation();
363 gl_init_translate();
364 gl_init_vbrender();
365 gl_init_vbxform();
366 gl_init_vertices();
367#ifdef THREADS
368 mesa_ctx_thread_init();
369#endif
370 alreadyCalled = GL_TRUE;
371 }
372#if defined(DEBUG) && defined(__DATE__) && defined(__TIME__)
373 fprintf(stderr, "Mesa DEBUG build %s %s\n", __DATE__, __TIME__);
374#endif
375}
376
377
378/*
379 * Allocate and initialize a shared context state structure.
380 */
381static struct gl_shared_state *alloc_shared_state( void )
382{
383 GLuint d;
384 struct gl_shared_state *ss;
385 GLboolean outOfMemory;
386
387 ss = CALLOC_STRUCT(gl_shared_state);
388 if (!ss)
389 return NULL;
390
391 ss->DisplayList = NewHashTable();
392
393 ss->TexObjects = NewHashTable();
394
395 /* Default Texture objects */
396 outOfMemory = GL_FALSE;
397 for (d = 1 ; d <= 3 ; d++) {
398 ss->DefaultD[d] = gl_alloc_texture_object(ss, 0, d);
399 if (!ss->DefaultD[d]) {
400 outOfMemory = GL_TRUE;
401 break;
402 }
403 ss->DefaultD[d]->RefCount++; /* don't free if not in use */
404 }
405
406 if (!ss->DisplayList || !ss->TexObjects || outOfMemory) {
407 /* Ran out of memory at some point. Free everything and return NULL */
408 if (ss->DisplayList)
409 DeleteHashTable(ss->DisplayList);
410 if (ss->TexObjects)
411 DeleteHashTable(ss->TexObjects);
412 if (ss->DefaultD[1])
413 gl_free_texture_object(ss, ss->DefaultD[1]);
414 if (ss->DefaultD[2])
415 gl_free_texture_object(ss, ss->DefaultD[2]);
416 if (ss->DefaultD[3])
417 gl_free_texture_object(ss, ss->DefaultD[3]);
418 FREE(ss);
419 return NULL;
420 }
421 else {
422 return ss;
423 }
424}
425
426
427/*
428 * Deallocate a shared state context and all children structures.
429 */
430static void free_shared_state( GLcontext *ctx, struct gl_shared_state *ss )
431{
432 /* Free display lists */
433 while (1) {
434 GLuint list = HashFirstEntry(ss->DisplayList);
435 if (list) {
436 gl_destroy_list(ctx, list);
437 }
438 else {
439 break;
440 }
441 }
442 DeleteHashTable(ss->DisplayList);
443
444 /* Free texture objects */
445 while (ss->TexObjectList)
446 {
447 if (ctx->Driver.DeleteTexture)
448 (*ctx->Driver.DeleteTexture)( ctx, ss->TexObjectList );
449 /* this function removes from linked list too! */
450 gl_free_texture_object(ss, ss->TexObjectList);
451 }
452 DeleteHashTable(ss->TexObjects);
453
454 FREE(ss);
455}
456
457
458
459
460
461
462/*
463 * Initialize the nth light. Note that the defaults for light 0 are
464 * different than the other lights.
465 */
466static void init_light( struct gl_light *l, GLuint n )
467{
468 make_empty_list( l );
469
470 ASSIGN_4V( l->Ambient, 0.0, 0.0, 0.0, 1.0 );
471 if (n==0) {
472 ASSIGN_4V( l->Diffuse, 1.0, 1.0, 1.0, 1.0 );
473 ASSIGN_4V( l->Specular, 1.0, 1.0, 1.0, 1.0 );
474 }
475 else {
476 ASSIGN_4V( l->Diffuse, 0.0, 0.0, 0.0, 1.0 );
477 ASSIGN_4V( l->Specular, 0.0, 0.0, 0.0, 1.0 );
478 }
479 ASSIGN_4V( l->EyePosition, 0.0, 0.0, 1.0, 0.0 );
480 ASSIGN_3V( l->EyeDirection, 0.0, 0.0, -1.0 );
481 l->SpotExponent = 0.0;
482 gl_compute_spot_exp_table( l );
483 l->SpotCutoff = 180.0;
484 l->CosCutoff = 0.0; /* KW: -ve values not admitted */
485 l->ConstantAttenuation = 1.0;
486 l->LinearAttenuation = 0.0;
487 l->QuadraticAttenuation = 0.0;
488 l->Enabled = GL_FALSE;
489}
490
491
492
493static void init_lightmodel( struct gl_lightmodel *lm )
494{
495 ASSIGN_4V( lm->Ambient, 0.2, 0.2, 0.2, 1.0 );
496 lm->LocalViewer = GL_FALSE;
497 lm->TwoSide = GL_FALSE;
498 lm->ColorControl = GL_SINGLE_COLOR;
499}
500
501
502static void init_material( struct gl_material *m )
503{
504 ASSIGN_4V( m->Ambient, 0.2, 0.2, 0.2, 1.0 );
505 ASSIGN_4V( m->Diffuse, 0.8, 0.8, 0.8, 1.0 );
506 ASSIGN_4V( m->Specular, 0.0, 0.0, 0.0, 1.0 );
507 ASSIGN_4V( m->Emission, 0.0, 0.0, 0.0, 1.0 );
508 m->Shininess = 0.0;
509 m->AmbientIndex = 0;
510 m->DiffuseIndex = 1;
511 m->SpecularIndex = 1;
512}
513
514
515
516static void init_texture_unit( GLcontext *ctx, GLuint unit )
517{
518 struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
519
520 texUnit->EnvMode = GL_MODULATE;
521 ASSIGN_4V( texUnit->EnvColor, 0.0, 0.0, 0.0, 0.0 );
522 texUnit->TexGenEnabled = 0;
523 texUnit->GenModeS = GL_EYE_LINEAR;
524 texUnit->GenModeT = GL_EYE_LINEAR;
525 texUnit->GenModeR = GL_EYE_LINEAR;
526 texUnit->GenModeQ = GL_EYE_LINEAR;
527 /* Yes, these plane coefficients are correct! */
528 ASSIGN_4V( texUnit->ObjectPlaneS, 1.0, 0.0, 0.0, 0.0 );
529 ASSIGN_4V( texUnit->ObjectPlaneT, 0.0, 1.0, 0.0, 0.0 );
530 ASSIGN_4V( texUnit->ObjectPlaneR, 0.0, 0.0, 0.0, 0.0 );
531 ASSIGN_4V( texUnit->ObjectPlaneQ, 0.0, 0.0, 0.0, 0.0 );
532 ASSIGN_4V( texUnit->EyePlaneS, 1.0, 0.0, 0.0, 0.0 );
533 ASSIGN_4V( texUnit->EyePlaneT, 0.0, 1.0, 0.0, 0.0 );
534 ASSIGN_4V( texUnit->EyePlaneR, 0.0, 0.0, 0.0, 0.0 );
535 ASSIGN_4V( texUnit->EyePlaneQ, 0.0, 0.0, 0.0, 0.0 );
536
537 texUnit->CurrentD[1] = ctx->Shared->DefaultD[1];
538 texUnit->CurrentD[2] = ctx->Shared->DefaultD[2];
539 texUnit->CurrentD[3] = ctx->Shared->DefaultD[3];
540}
541
542
543static void init_fallback_arrays( GLcontext *ctx )
544{
545 struct gl_client_array *cl;
546 GLuint i;
547
548 cl = &ctx->Fallback.Normal;
549 cl->Size = 3;
550 cl->Type = GL_FLOAT;
551 cl->Stride = 0;
552 cl->StrideB = 0;
553 cl->Ptr = (void *) ctx->Current.Normal;
554 cl->Enabled = 1;
555
556 cl = &ctx->Fallback.Color;
557 cl->Size = 4;
558 cl->Type = GL_UNSIGNED_BYTE;
559 cl->Stride = 0;
560 cl->StrideB = 0;
561 cl->Ptr = (void *) ctx->Current.ByteColor;
562 cl->Enabled = 1;
563
564 cl = &ctx->Fallback.Index;
565 cl->Size = 1;
566 cl->Type = GL_UNSIGNED_INT;
567 cl->Stride = 0;
568 cl->StrideB = 0;
569 cl->Ptr = (void *) &ctx->Current.Index;
570 cl->Enabled = 1;
571
572 for (i = 0 ; i < MAX_TEXTURE_UNITS ; i++) {
573 cl = &ctx->Fallback.TexCoord[i];
574 cl->Size = 4;
575 cl->Type = GL_FLOAT;
576 cl->Stride = 0;
577 cl->StrideB = 0;
578 cl->Ptr = (void *) ctx->Current.Texcoord[i];
579 cl->Enabled = 1;
580 }
581
582 cl = &ctx->Fallback.EdgeFlag;
583 cl->Size = 1;
584 cl->Type = GL_UNSIGNED_BYTE;
585 cl->Stride = 0;
586 cl->StrideB = 0;
587 cl->Ptr = (void *) &ctx->Current.EdgeFlag;
588 cl->Enabled = 1;
589}
590
591/* Initialize a 1-D evaluator map */
592static void init_1d_map( struct gl_1d_map *map, int n, const float *initial )
593{
594 map->Order = 1;
595 map->u1 = 0.0;
596 map->u2 = 1.0;
597 map->Points = (GLfloat *) MALLOC(n * sizeof(GLfloat));
598 if (map->Points) {
599 GLint i;
600 for (i=0;i<n;i++)
601 map->Points[i] = initial[i];
602 }
603 map->Retain = GL_FALSE;
604}
605
606
607/* Initialize a 2-D evaluator map */
608static void init_2d_map( struct gl_2d_map *map, int n, const float *initial )
609{
610 map->Uorder = 1;
611 map->Vorder = 1;
612 map->u1 = 0.0;
613 map->u2 = 1.0;
614 map->v1 = 0.0;
615 map->v2 = 1.0;
616 map->Points = (GLfloat *) MALLOC(n * sizeof(GLfloat));
617 if (map->Points) {
618 GLint i;
619 for (i=0;i<n;i++)
620 map->Points[i] = initial[i];
621 }
622 map->Retain = GL_FALSE;
623}
624
625
626
627/*
628 * Initialize a gl_context structure to default values.
629 */
630static void initialize_context( GLcontext *ctx )
631{
632 GLuint i, j;
633
634 if (ctx) {
635 /* Constants, may be overriden by device driver */
636 ctx->Const.MaxTextureLevels = MAX_TEXTURE_LEVELS;
637 ctx->Const.MaxTextureSize = 1 << (MAX_TEXTURE_LEVELS - 1);
638 ctx->Const.MaxTextureUnits = MAX_TEXTURE_UNITS;
639 ctx->Const.MaxArrayLockSize = MAX_ARRAY_LOCK_SIZE;
640
641 /* Modelview matrix */
642 gl_matrix_ctr( &ctx->ModelView );
643 gl_matrix_alloc_inv( &ctx->ModelView );
644
645 ctx->ModelViewStackDepth = 0;
646 for (i = 0 ; i < MAX_MODELVIEW_STACK_DEPTH ; i++) {
647 gl_matrix_ctr( &ctx->ModelViewStack[i] );
648 gl_matrix_alloc_inv( &ctx->ModelViewStack[i] );
649 }
650
651 /* Projection matrix - need inv for user clipping in clip space*/
652 gl_matrix_ctr( &ctx->ProjectionMatrix );
653 gl_matrix_alloc_inv( &ctx->ProjectionMatrix );
654
655 gl_matrix_ctr( &ctx->ModelProjectMatrix );
656 gl_matrix_ctr( &ctx->ModelProjectWinMatrix );
657 ctx->ModelProjectWinMatrixUptodate = GL_FALSE;
658
659 ctx->ProjectionStackDepth = 0;
660 ctx->NearFarStack[0][0] = 1.0; /* These values seem weird by make */
661 ctx->NearFarStack[0][1] = 0.0; /* sense mathematically. */
662
663 for (i = 0 ; i < MAX_PROJECTION_STACK_DEPTH ; i++) {
664 gl_matrix_ctr( &ctx->ProjectionStack[i] );
665 gl_matrix_alloc_inv( &ctx->ProjectionStack[i] );
666 }
667
668 /* Texture matrix */
669 for (i=0; i<MAX_TEXTURE_UNITS; i++) {
670 gl_matrix_ctr( &ctx->TextureMatrix[i] );
671 ctx->TextureStackDepth[i] = 0;
672 for (j = 0 ; j < MAX_TEXTURE_STACK_DEPTH ; j++) {
673 ctx->TextureStack[i][j].inv = 0;
674 }
675 }
676
677 /* Accumulate buffer group */
678 ASSIGN_4V( ctx->Accum.ClearColor, 0.0, 0.0, 0.0, 0.0 );
679
680 /* Color buffer group */
681 ctx->Color.IndexMask = 0xffffffff;
682 ctx->Color.ColorMask[0] = 0xff;
683 ctx->Color.ColorMask[1] = 0xff;
684 ctx->Color.ColorMask[2] = 0xff;
685 ctx->Color.ColorMask[3] = 0xff;
686 ctx->Color.SWmasking = GL_FALSE;
687 ctx->Color.ClearIndex = 0;
688 ASSIGN_4V( ctx->Color.ClearColor, 0.0, 0.0, 0.0, 0.0 );
689 ctx->Color.DrawBuffer = GL_FRONT;
690 ctx->Color.AlphaEnabled = GL_FALSE;
691 ctx->Color.AlphaFunc = GL_ALWAYS;
692 ctx->Color.AlphaRef = 0;
693 ctx->Color.BlendEnabled = GL_FALSE;
694 ctx->Color.BlendSrcRGB = GL_ONE;
695 ctx->Color.BlendDstRGB = GL_ZERO;
696 ctx->Color.BlendSrcA = GL_ONE;
697 ctx->Color.BlendDstA = GL_ZERO;
698 ctx->Color.BlendEquation = GL_FUNC_ADD_EXT;
699 ctx->Color.BlendFunc = NULL; /* this pointer set only when needed */
700 ASSIGN_4V( ctx->Color.BlendColor, 0.0, 0.0, 0.0, 0.0 );
701 ctx->Color.IndexLogicOpEnabled = GL_FALSE;
702 ctx->Color.ColorLogicOpEnabled = GL_FALSE;
703 ctx->Color.SWLogicOpEnabled = GL_FALSE;
704 ctx->Color.LogicOp = GL_COPY;
705 ctx->Color.DitherFlag = GL_TRUE;
706 ctx->Color.MultiDrawBuffer = GL_FALSE;
707
708 /* Current group */
709 ASSIGN_4V( ctx->Current.ByteColor, 255, 255, 255, 255);
710 ctx->Current.Index = 1;
711 for (i=0; i<MAX_TEXTURE_UNITS; i++)
712 ASSIGN_4V( ctx->Current.Texcoord[i], 0.0, 0.0, 0.0, 1.0 );
713 ASSIGN_4V( ctx->Current.RasterPos, 0.0, 0.0, 0.0, 1.0 );
714 ctx->Current.RasterDistance = 0.0;
715 ASSIGN_4V( ctx->Current.RasterColor, 1.0, 1.0, 1.0, 1.0 );
716 ctx->Current.RasterIndex = 1;
717 for (i=0; i<MAX_TEXTURE_UNITS; i++)
718 ASSIGN_4V( ctx->Current.RasterMultiTexCoord[i], 0.0, 0.0, 0.0, 1.0 );
719 ctx->Current.RasterTexCoord = ctx->Current.RasterMultiTexCoord[0];
720 ctx->Current.RasterPosValid = GL_TRUE;
721 ctx->Current.EdgeFlag = GL_TRUE;
722 ASSIGN_3V( ctx->Current.Normal, 0.0, 0.0, 1.0 );
723 ctx->Current.Primitive = (GLenum) (GL_POLYGON + 1);
724
725 ctx->Current.Flag = (VERT_NORM|VERT_INDEX|VERT_RGBA|VERT_EDGE|
726 VERT_TEX0_1|VERT_TEX1_1|VERT_MATERIAL);
727
728 init_fallback_arrays( ctx );
729
730 /* Depth buffer group */
731 ctx->Depth.Test = GL_FALSE;
732 ctx->Depth.Clear = 1.0;
733 ctx->Depth.Func = GL_LESS;
734 ctx->Depth.Mask = GL_TRUE;
735
736 /* Evaluators group */
737 ctx->Eval.Map1Color4 = GL_FALSE;
738 ctx->Eval.Map1Index = GL_FALSE;
739 ctx->Eval.Map1Normal = GL_FALSE;
740 ctx->Eval.Map1TextureCoord1 = GL_FALSE;
741 ctx->Eval.Map1TextureCoord2 = GL_FALSE;
742 ctx->Eval.Map1TextureCoord3 = GL_FALSE;
743 ctx->Eval.Map1TextureCoord4 = GL_FALSE;
744 ctx->Eval.Map1Vertex3 = GL_FALSE;
745 ctx->Eval.Map1Vertex4 = GL_FALSE;
746 ctx->Eval.Map2Color4 = GL_FALSE;
747 ctx->Eval.Map2Index = GL_FALSE;
748 ctx->Eval.Map2Normal = GL_FALSE;
749 ctx->Eval.Map2TextureCoord1 = GL_FALSE;
750 ctx->Eval.Map2TextureCoord2 = GL_FALSE;
751 ctx->Eval.Map2TextureCoord3 = GL_FALSE;
752 ctx->Eval.Map2TextureCoord4 = GL_FALSE;
753 ctx->Eval.Map2Vertex3 = GL_FALSE;
754 ctx->Eval.Map2Vertex4 = GL_FALSE;
755 ctx->Eval.AutoNormal = GL_FALSE;
756 ctx->Eval.MapGrid1un = 1;
757 ctx->Eval.MapGrid1u1 = 0.0;
758 ctx->Eval.MapGrid1u2 = 1.0;
759 ctx->Eval.MapGrid2un = 1;
760 ctx->Eval.MapGrid2vn = 1;
761 ctx->Eval.MapGrid2u1 = 0.0;
762 ctx->Eval.MapGrid2u2 = 1.0;
763 ctx->Eval.MapGrid2v1 = 0.0;
764 ctx->Eval.MapGrid2v2 = 1.0;
765
766 /* Evaluator data */
767 {
768 static GLfloat vertex[4] = { 0.0, 0.0, 0.0, 1.0 };
769 static GLfloat normal[3] = { 0.0, 0.0, 1.0 };
770 static GLfloat index[1] = { 1.0 };
771 static GLfloat color[4] = { 1.0, 1.0, 1.0, 1.0 };
772 static GLfloat texcoord[4] = { 0.0, 0.0, 0.0, 1.0 };
773
774 init_1d_map( &ctx->EvalMap.Map1Vertex3, 3, vertex );
775 init_1d_map( &ctx->EvalMap.Map1Vertex4, 4, vertex );
776 init_1d_map( &ctx->EvalMap.Map1Index, 1, index );
777 init_1d_map( &ctx->EvalMap.Map1Color4, 4, color );
778 init_1d_map( &ctx->EvalMap.Map1Normal, 3, normal );
779 init_1d_map( &ctx->EvalMap.Map1Texture1, 1, texcoord );
780 init_1d_map( &ctx->EvalMap.Map1Texture2, 2, texcoord );
781 init_1d_map( &ctx->EvalMap.Map1Texture3, 3, texcoord );
782 init_1d_map( &ctx->EvalMap.Map1Texture4, 4, texcoord );
783
784 init_2d_map( &ctx->EvalMap.Map2Vertex3, 3, vertex );
785 init_2d_map( &ctx->EvalMap.Map2Vertex4, 4, vertex );
786 init_2d_map( &ctx->EvalMap.Map2Index, 1, index );
787 init_2d_map( &ctx->EvalMap.Map2Color4, 4, color );
788 init_2d_map( &ctx->EvalMap.Map2Normal, 3, normal );
789 init_2d_map( &ctx->EvalMap.Map2Texture1, 1, texcoord );
790 init_2d_map( &ctx->EvalMap.Map2Texture2, 2, texcoord );
791 init_2d_map( &ctx->EvalMap.Map2Texture3, 3, texcoord );
792 init_2d_map( &ctx->EvalMap.Map2Texture4, 4, texcoord );
793 }
794
795 /* Fog group */
796 ctx->Fog.Enabled = GL_FALSE;
797 ctx->Fog.Mode = GL_EXP;
798 ASSIGN_4V( ctx->Fog.Color, 0.0, 0.0, 0.0, 0.0 );
799 ctx->Fog.Index = 0.0;
800 ctx->Fog.Density = 1.0;
801 ctx->Fog.Start = 0.0;
802 ctx->Fog.End = 1.0;
803
804 /* Hint group */
805 ctx->Hint.PerspectiveCorrection = GL_DONT_CARE;
806 ctx->Hint.PointSmooth = GL_DONT_CARE;
807 ctx->Hint.LineSmooth = GL_DONT_CARE;
808 ctx->Hint.PolygonSmooth = GL_DONT_CARE;
809 ctx->Hint.Fog = GL_DONT_CARE;
810
811 ctx->Hint.AllowDrawWin = GL_TRUE;
812 ctx->Hint.AllowDrawSpn = GL_TRUE;
813 ctx->Hint.AllowDrawMem = GL_TRUE;
814 ctx->Hint.StrictLighting = GL_TRUE;
815
816 /* Pipeline */
817 gl_pipeline_init( ctx );
818 gl_cva_init( ctx );
819
820 /* Extensions */
821 gl_extensions_ctr( ctx );
822
823 ctx->AllowVertexCull = CLIP_CULLED_BIT;
824
825 /* Lighting group */
826 for (i=0;i<MAX_LIGHTS;i++) {
827 init_light( &ctx->Light.Light[i], i );
828 }
829 make_empty_list( &ctx->Light.EnabledList );
830
831 init_lightmodel( &ctx->Light.Model );
832 init_material( &ctx->Light.Material[0] );
833 init_material( &ctx->Light.Material[1] );
834 ctx->Light.ShadeModel = GL_SMOOTH;
835 ctx->Light.Enabled = GL_FALSE;
836 ctx->Light.ColorMaterialFace = GL_FRONT_AND_BACK;
837 ctx->Light.ColorMaterialMode = GL_AMBIENT_AND_DIFFUSE;
838 ctx->Light.ColorMaterialBitmask
839 = gl_material_bitmask( ctx,
840 GL_FRONT_AND_BACK,
841 GL_AMBIENT_AND_DIFFUSE, ~0, 0 );
842
843 ctx->Light.ColorMaterialEnabled = GL_FALSE;
844
845 /* Line group */
846 ctx->Line.SmoothFlag = GL_FALSE;
847 ctx->Line.StippleFlag = GL_FALSE;
848 ctx->Line.Width = 1.0;
849 ctx->Line.StipplePattern = 0xffff;
850 ctx->Line.StippleFactor = 1;
851
852 /* Display List group */
853 ctx->List.ListBase = 0;
854
855 /* Pixel group */
856 ctx->Pixel.RedBias = 0.0;
857 ctx->Pixel.RedScale = 1.0;
858 ctx->Pixel.GreenBias = 0.0;
859 ctx->Pixel.GreenScale = 1.0;
860 ctx->Pixel.BlueBias = 0.0;
861 ctx->Pixel.BlueScale = 1.0;
862 ctx->Pixel.AlphaBias = 0.0;
863 ctx->Pixel.AlphaScale = 1.0;
864 ctx->Pixel.ScaleOrBiasRGBA = GL_FALSE;
865 ctx->Pixel.DepthBias = 0.0;
866 ctx->Pixel.DepthScale = 1.0;
867 ctx->Pixel.IndexOffset = 0;
868 ctx->Pixel.IndexShift = 0;
869 ctx->Pixel.ZoomX = 1.0;
870 ctx->Pixel.ZoomY = 1.0;
871 ctx->Pixel.MapColorFlag = GL_FALSE;
872 ctx->Pixel.MapStencilFlag = GL_FALSE;
873 ctx->Pixel.MapStoSsize = 1;
874 ctx->Pixel.MapItoIsize = 1;
875 ctx->Pixel.MapItoRsize = 1;
876 ctx->Pixel.MapItoGsize = 1;
877 ctx->Pixel.MapItoBsize = 1;
878 ctx->Pixel.MapItoAsize = 1;
879 ctx->Pixel.MapRtoRsize = 1;
880 ctx->Pixel.MapGtoGsize = 1;
881 ctx->Pixel.MapBtoBsize = 1;
882 ctx->Pixel.MapAtoAsize = 1;
883 ctx->Pixel.MapStoS[0] = 0;
884 ctx->Pixel.MapItoI[0] = 0;
885 ctx->Pixel.MapItoR[0] = 0.0;
886 ctx->Pixel.MapItoG[0] = 0.0;
887 ctx->Pixel.MapItoB[0] = 0.0;
888 ctx->Pixel.MapItoA[0] = 0.0;
889 ctx->Pixel.MapItoR8[0] = 0;
890 ctx->Pixel.MapItoG8[0] = 0;
891 ctx->Pixel.MapItoB8[0] = 0;
892 ctx->Pixel.MapItoA8[0] = 0;
893 ctx->Pixel.MapRtoR[0] = 0.0;
894 ctx->Pixel.MapGtoG[0] = 0.0;
895 ctx->Pixel.MapBtoB[0] = 0.0;
896 ctx->Pixel.MapAtoA[0] = 0.0;
897
898 /* Point group */
899 ctx->Point.SmoothFlag = GL_FALSE;
900 ctx->Point.Size = 1.0;
901 ctx->Point.Params[0] = 1.0;
902 ctx->Point.Params[1] = 0.0;
903 ctx->Point.Params[2] = 0.0;
904 ctx->Point.Attenuated = GL_FALSE;
905 ctx->Point.MinSize = 0.0;
906 ctx->Point.MaxSize = (GLfloat) MAX_POINT_SIZE;
907 ctx->Point.Threshold = 1.0;
908
909 /* Polygon group */
910 ctx->Polygon.CullFlag = GL_FALSE;
911 ctx->Polygon.CullFaceMode = GL_BACK;
912 ctx->Polygon.FrontFace = GL_CCW;
913 ctx->Polygon.FrontBit = 0;
914 ctx->Polygon.FrontMode = GL_FILL;
915 ctx->Polygon.BackMode = GL_FILL;
916 ctx->Polygon.Unfilled = GL_FALSE;
917 ctx->Polygon.SmoothFlag = GL_FALSE;
918 ctx->Polygon.StippleFlag = GL_FALSE;
919 ctx->Polygon.OffsetFactor = 0.0F;
920 ctx->Polygon.OffsetUnits = 0.0F;
921 ctx->Polygon.OffsetPoint = GL_FALSE;
922 ctx->Polygon.OffsetLine = GL_FALSE;
923 ctx->Polygon.OffsetFill = GL_FALSE;
924
925 /* Polygon Stipple group */
926 MEMSET( ctx->PolygonStipple, 0xff, 32*sizeof(GLuint) );
927
928 /* Scissor group */
929 ctx->Scissor.Enabled = GL_FALSE;
930 ctx->Scissor.X = 0;
931 ctx->Scissor.Y = 0;
932 ctx->Scissor.Width = 0;
933 ctx->Scissor.Height = 0;
934
935 /* Stencil group */
936 ctx->Stencil.Enabled = GL_FALSE;
937 ctx->Stencil.Function = GL_ALWAYS;
938 ctx->Stencil.FailFunc = GL_KEEP;
939 ctx->Stencil.ZPassFunc = GL_KEEP;
940 ctx->Stencil.ZFailFunc = GL_KEEP;
941 ctx->Stencil.Ref = 0;
942 ctx->Stencil.ValueMask = STENCIL_MAX;
943 ctx->Stencil.Clear = 0;
944 ctx->Stencil.WriteMask = STENCIL_MAX;
945
946 /* Texture group */
947 ctx->Texture.CurrentUnit = 0; /* multitexture */
948 ctx->Texture.CurrentTransformUnit = 0; /* multitexture */
949 ctx->Texture.Enabled = 0;
950
951 for (i=0; i<MAX_TEXTURE_UNITS; i++)
952 init_texture_unit( ctx, i );
953
954 ctx->Texture.SharedPalette = GL_FALSE;
955 ctx->Texture.Palette[0] = 255;
956 ctx->Texture.Palette[1] = 255;
957 ctx->Texture.Palette[2] = 255;
958 ctx->Texture.Palette[3] = 255;
959 ctx->Texture.PaletteSize = 1;
960 ctx->Texture.PaletteIntFormat = GL_RGBA;
961 ctx->Texture.PaletteFormat = GL_RGBA;
962
963 /* Transformation group */
964 ctx->Transform.MatrixMode = GL_MODELVIEW;
965 ctx->Transform.Normalize = GL_FALSE;
966 ctx->Transform.RescaleNormals = GL_FALSE;
967 for (i=0;i<MAX_CLIP_PLANES;i++) {
968 ctx->Transform.ClipEnabled[i] = GL_FALSE;
969 ASSIGN_4V( ctx->Transform.EyeUserPlane[i], 0.0, 0.0, 0.0, 0.0 );
970 }
971 ctx->Transform.AnyClip = GL_FALSE;
972
973 /* Viewport group */
974 ctx->Viewport.X = 0;
975 ctx->Viewport.Y = 0;
976 ctx->Viewport.Width = 0;
977 ctx->Viewport.Height = 0;
978 ctx->Viewport.Near = 0.0;
979 ctx->Viewport.Far = 1.0;
980 gl_matrix_ctr(&ctx->Viewport.WindowMap);
981
982#define Sz 10
983#define Tz 14
984 ctx->Viewport.WindowMap.m[Sz] = 0.5 * DEPTH_SCALE;
985 ctx->Viewport.WindowMap.m[Tz] = 0.5 * DEPTH_SCALE;
986#undef Sz
987#undef Tz
988
989 ctx->Viewport.WindowMap.flags = MAT_FLAG_GENERAL_SCALE|MAT_FLAG_TRANSLATION;
990 ctx->Viewport.WindowMap.type = MATRIX_3D_NO_ROT;
991
992 /* Vertex arrays */
993 ctx->Array.Vertex.Size = 4;
994 ctx->Array.Vertex.Type = GL_FLOAT;
995 ctx->Array.Vertex.Stride = 0;
996 ctx->Array.Vertex.StrideB = 0;
997 ctx->Array.Vertex.Ptr = NULL;
998 ctx->Array.Vertex.Enabled = GL_FALSE;
999 ctx->Array.Normal.Type = GL_FLOAT;
1000 ctx->Array.Normal.Stride = 0;
1001 ctx->Array.Normal.StrideB = 0;
1002 ctx->Array.Normal.Ptr = NULL;
1003 ctx->Array.Normal.Enabled = GL_FALSE;
1004 ctx->Array.Color.Size = 4;
1005 ctx->Array.Color.Type = GL_FLOAT;
1006 ctx->Array.Color.Stride = 0;
1007 ctx->Array.Color.StrideB = 0;
1008 ctx->Array.Color.Ptr = NULL;
1009 ctx->Array.Color.Enabled = GL_FALSE;
1010 ctx->Array.Index.Type = GL_FLOAT;
1011 ctx->Array.Index.Stride = 0;
1012 ctx->Array.Index.StrideB = 0;
1013 ctx->Array.Index.Ptr = NULL;
1014 ctx->Array.Index.Enabled = GL_FALSE;
1015 for (i = 0; i < MAX_TEXTURE_UNITS; i++) {
1016 ctx->Array.TexCoord[i].Size = 4;
1017 ctx->Array.TexCoord[i].Type = GL_FLOAT;
1018 ctx->Array.TexCoord[i].Stride = 0;
1019 ctx->Array.TexCoord[i].StrideB = 0;
1020 ctx->Array.TexCoord[i].Ptr = NULL;
1021 ctx->Array.TexCoord[i].Enabled = GL_FALSE;
1022 }
1023 ctx->Array.TexCoordInterleaveFactor = 1;
1024 ctx->Array.EdgeFlag.Stride = 0;
1025 ctx->Array.EdgeFlag.StrideB = 0;
1026 ctx->Array.EdgeFlag.Ptr = NULL;
1027 ctx->Array.EdgeFlag.Enabled = GL_FALSE;
1028 ctx->Array.ActiveTexture = 0; /* GL_ARB_multitexture */
1029
1030 /* Pixel transfer */
1031 ctx->Pack.Alignment = 4;
1032 ctx->Pack.RowLength = 0;
1033 ctx->Pack.ImageHeight = 0;
1034 ctx->Pack.SkipPixels = 0;
1035 ctx->Pack.SkipRows = 0;
1036 ctx->Pack.SkipImages = 0;
1037 ctx->Pack.SwapBytes = GL_FALSE;
1038 ctx->Pack.LsbFirst = GL_FALSE;
1039 ctx->Unpack.Alignment = 4;
1040 ctx->Unpack.RowLength = 0;
1041 ctx->Unpack.ImageHeight = 0;
1042 ctx->Unpack.SkipPixels = 0;
1043 ctx->Unpack.SkipRows = 0;
1044 ctx->Unpack.SkipImages = 0;
1045 ctx->Unpack.SwapBytes = GL_FALSE;
1046 ctx->Unpack.LsbFirst = GL_FALSE;
1047
1048 /* Feedback */
1049 ctx->Feedback.Type = GL_2D; /* TODO: verify */
1050 ctx->Feedback.Buffer = NULL;
1051 ctx->Feedback.BufferSize = 0;
1052 ctx->Feedback.Count = 0;
1053
1054 /* Selection/picking */
1055 ctx->Select.Buffer = NULL;
1056 ctx->Select.BufferSize = 0;
1057 ctx->Select.BufferCount = 0;
1058 ctx->Select.Hits = 0;
1059 ctx->Select.NameStackDepth = 0;
1060
1061 /* Optimized Accum buffer */
1062 ctx->IntegerAccumMode = GL_TRUE;
1063 ctx->IntegerAccumScaler = 0.0;
1064
1065 /* Renderer and client attribute stacks */
1066 ctx->AttribStackDepth = 0;
1067 ctx->ClientAttribStackDepth = 0;
1068
1069 /*** Miscellaneous ***/
1070 ctx->NewState = NEW_ALL;
1071 ctx->RenderMode = GL_RENDER;
1072 ctx->StippleCounter = 0;
1073 ctx->NeedNormals = GL_FALSE;
1074 ctx->DoViewportMapping = GL_TRUE;
1075
1076 ctx->NeedEyeCoords = GL_FALSE;
1077 ctx->NeedEyeNormals = GL_FALSE;
1078 ctx->vb_proj_matrix = &ctx->ModelProjectMatrix;
1079
1080 /* Display list */
1081 ctx->CallDepth = 0;
1082 ctx->ExecuteFlag = GL_TRUE;
1083 ctx->CompileFlag = GL_FALSE;
1084 ctx->CurrentListPtr = NULL;
1085 ctx->CurrentBlock = NULL;
1086 ctx->CurrentListNum = 0;
1087 ctx->CurrentPos = 0;
1088
1089 ctx->ErrorValue = (GLenum) GL_NO_ERROR;
1090
1091 ctx->CatchSignals = GL_TRUE;
1092
1093 /* For debug/development only */
1094 ctx->NoRaster = getenv("MESA_NO_RASTER") ? GL_TRUE : GL_FALSE;
1095 ctx->FirstTimeCurrent = GL_TRUE;
1096
1097 /* Dither disable */
1098 ctx->NoDither = getenv("MESA_NO_DITHER") ? GL_TRUE : GL_FALSE;
1099 if (ctx->NoDither) {
1100 if (getenv("MESA_DEBUG")) {
1101 fprintf(stderr, "MESA_NO_DITHER set - dithering disabled\n");
1102 }
1103 ctx->Color.DitherFlag = GL_FALSE;
1104 }
1105 }
1106}
1107
1108
1109
1110/*
1111 * Allocate a new GLvisual object.
1112 * Input: rgbFlag - GL_TRUE=RGB(A) mode, GL_FALSE=Color Index mode
1113 * alphaFlag - alloc software alpha buffers?
1114 * dbFlag - double buffering?
1115 * stereoFlag - stereo buffer?
1116 * depthFits - requested minimum bits per depth buffer value
1117 * stencilFits - requested minimum bits per stencil buffer value
1118 * accumFits - requested minimum bits per accum buffer component
1119 * indexFits - number of bits per pixel if rgbFlag==GL_FALSE
1120 * red/green/blue/alphaFits - number of bits per color component
1121 * in frame buffer for RGB(A) mode.
1122 * Return: pointer to new GLvisual or NULL if requested parameters can't
1123 * be met.
1124 */
1125GLvisual *gl_create_visual( GLboolean rgbFlag,
1126 GLboolean alphaFlag,
1127 GLboolean dbFlag,
1128 GLboolean stereoFlag,
1129 GLint depthBits,
1130 GLint stencilBits,
1131 GLint accumBits,
1132 GLint indexBits,
1133 GLint redBits,
1134 GLint greenBits,
1135 GLint blueBits,
1136 GLint alphaBits )
1137{
1138 GLvisual *vis;
1139
1140 if (depthBits > (GLint) (8*sizeof(GLdepth))) {
1141 /* can't meet depth buffer requirements */
1142 return NULL;
1143 }
1144 if (stencilBits > (GLint) (8*sizeof(GLstencil))) {
1145 /* can't meet stencil buffer requirements */
1146 return NULL;
1147 }
1148 if (accumBits > (GLint) (8*sizeof(GLaccum))) {
1149 /* can't meet accum buffer requirements */
1150 return NULL;
1151 }
1152
1153 vis = (GLvisual *) CALLOC( sizeof(GLvisual) );
1154 if (!vis) {
1155 return NULL;
1156 }
1157
1158 vis->RGBAflag = rgbFlag;
1159 vis->DBflag = dbFlag;
1160 vis->StereoFlag = stereoFlag;
1161 vis->RedBits = redBits;
1162 vis->GreenBits = greenBits;
1163 vis->BlueBits = blueBits;
1164 vis->AlphaBits = alphaFlag ? 8*sizeof(GLubyte) : alphaBits;
1165
1166 vis->IndexBits = indexBits;
1167 vis->DepthBits = (depthBits>0) ? 8*sizeof(GLdepth) : 0;
1168 vis->AccumBits = (accumBits>0) ? 8*sizeof(GLaccum) : 0;
1169 vis->StencilBits = (stencilBits>0) ? 8*sizeof(GLstencil) : 0;
1170
1171 vis->SoftwareAlpha = alphaFlag;
1172
1173 return vis;
1174}
1175
1176
1177
1178void gl_destroy_visual( GLvisual *vis )
1179{
1180 FREE( vis );
1181}
1182
1183
1184
1185/*
1186 * Allocate the proxy textures. If we run out of memory part way through
1187 * the allocations clean up and return GL_FALSE.
1188 * Return: GL_TRUE=success, GL_FALSE=failure
1189 */
1190static GLboolean alloc_proxy_textures( GLcontext *ctx )
1191{
1192 GLboolean out_of_memory;
1193 GLint i;
1194
1195 ctx->Texture.Proxy1D = gl_alloc_texture_object(NULL, 0, 1);
1196 if (!ctx->Texture.Proxy1D) {
1197 return GL_FALSE;
1198 }
1199
1200 ctx->Texture.Proxy2D = gl_alloc_texture_object(NULL, 0, 2);
1201 if (!ctx->Texture.Proxy2D) {
1202 gl_free_texture_object(NULL, ctx->Texture.Proxy1D);
1203 return GL_FALSE;
1204 }
1205
1206 ctx->Texture.Proxy3D = gl_alloc_texture_object(NULL, 0, 3);
1207 if (!ctx->Texture.Proxy3D) {
1208 gl_free_texture_object(NULL, ctx->Texture.Proxy1D);
1209 gl_free_texture_object(NULL, ctx->Texture.Proxy2D);
1210 return GL_FALSE;
1211 }
1212
1213 out_of_memory = GL_FALSE;
1214 for (i=0;i<MAX_TEXTURE_LEVELS;i++) {
1215 ctx->Texture.Proxy1D->Image[i] = gl_alloc_texture_image();
1216 ctx->Texture.Proxy2D->Image[i] = gl_alloc_texture_image();
1217 ctx->Texture.Proxy3D->Image[i] = gl_alloc_texture_image();
1218 if (!ctx->Texture.Proxy1D->Image[i]
1219 || !ctx->Texture.Proxy2D->Image[i]
1220 || !ctx->Texture.Proxy3D->Image[i]) {
1221 out_of_memory = GL_TRUE;
1222 }
1223 }
1224 if (out_of_memory) {
1225 for (i=0;i<MAX_TEXTURE_LEVELS;i++) {
1226 if (ctx->Texture.Proxy1D->Image[i]) {
1227 gl_free_texture_image(ctx->Texture.Proxy1D->Image[i]);
1228 }
1229 if (ctx->Texture.Proxy2D->Image[i]) {
1230 gl_free_texture_image(ctx->Texture.Proxy2D->Image[i]);
1231 }
1232 if (ctx->Texture.Proxy3D->Image[i]) {
1233 gl_free_texture_image(ctx->Texture.Proxy3D->Image[i]);
1234 }
1235 }
1236 gl_free_texture_object(NULL, ctx->Texture.Proxy1D);
1237 gl_free_texture_object(NULL, ctx->Texture.Proxy2D);
1238 gl_free_texture_object(NULL, ctx->Texture.Proxy3D);
1239 return GL_FALSE;
1240 }
1241 else {
1242 return GL_TRUE;
1243 }
1244}
1245
1246
1247
1248/*
1249 * Allocate and initialize a GLcontext structure.
1250 * Input: visual - a GLvisual pointer
1251 * sharelist - another context to share display lists with or NULL
1252 * driver_ctx - pointer to device driver's context state struct
1253 * Return: pointer to a new gl_context struct or NULL if error.
1254 */
1255GLcontext *gl_create_context( GLvisual *visual,
1256 GLcontext *share_list,
1257 void *driver_ctx,
1258 GLboolean direct )
1259{
1260 GLcontext *ctx;
1261 GLuint i;
1262
1263 (void) direct; /* not used */
1264
1265 /* do some implementation tests */
1266 assert( sizeof(GLbyte) == 1 );
1267 assert( sizeof(GLshort) >= 2 );
1268 assert( sizeof(GLint) >= 4 );
1269 assert( sizeof(GLubyte) == 1 );
1270 assert( sizeof(GLushort) >= 2 );
1271 assert( sizeof(GLuint) >= 4 );
1272
1273 /* misc one-time initializations */
1274 one_time_init();
1275
1276 ctx = (GLcontext *) CALLOC( sizeof(GLcontext) );
1277 if (!ctx) {
1278 return NULL;
1279 }
1280
1281 ctx->DriverCtx = driver_ctx;
1282 ctx->Visual = visual;
1283 ctx->Buffer = NULL;
1284
1285 ctx->VB = gl_vb_create_for_immediate( ctx );
1286
1287 if (!ctx->VB) {
1288 FREE( ctx );
1289 return NULL;
1290 }
1291 ctx->input = ctx->VB->IM;
1292
1293 ctx->PB = gl_alloc_pb();
1294
1295 if (!ctx->PB) {
1296 FREE( ctx->VB );
1297 FREE( ctx );
1298 return NULL;
1299 }
1300
1301 if (share_list) {
1302 /* share the group of display lists of another context */
1303 ctx->Shared = share_list->Shared;
1304 }
1305 else {
1306 /* allocate new group of display lists */
1307 ctx->Shared = alloc_shared_state();
1308 if (!ctx->Shared) {
1309 FREE(ctx->VB);
1310 FREE(ctx->PB);
1311 FREE(ctx);
1312 return NULL;
1313 }
1314 }
1315 ctx->Shared->RefCount++;
1316
1317 initialize_context( ctx );
1318 gl_reset_vb( ctx->VB );
1319 gl_reset_input( ctx );
1320
1321
1322 ctx->ShineTabList = MALLOC_STRUCT( gl_shine_tab );
1323 make_empty_list( ctx->ShineTabList );
1324
1325 for (i = 0 ; i < 10 ; i++) {
1326 struct gl_shine_tab *s = MALLOC_STRUCT( gl_shine_tab );
1327 s->shininess = -1;
1328 s->refcount = 0;
1329 insert_at_tail( ctx->ShineTabList, s );
1330 }
1331
1332 for (i = 0 ; i < 4 ; i++) {
1333 ctx->ShineTable[i] = ctx->ShineTabList->prev;
1334 ctx->ShineTable[i]->refcount++;
1335 }
1336
1337 if (visual->DBflag) {
1338 ctx->Color.DrawBuffer = GL_BACK;
1339 ctx->Color.DriverDrawBuffer = GL_BACK_LEFT;
1340 ctx->Color.DrawDestMask = BACK_LEFT_BIT;
1341 ctx->Pixel.ReadBuffer = GL_BACK;
1342 ctx->Pixel.DriverReadBuffer = GL_BACK_LEFT;
1343 }
1344 else {
1345 ctx->Color.DrawBuffer = GL_FRONT;
1346 ctx->Color.DriverDrawBuffer = GL_FRONT_LEFT;
1347 ctx->Color.DrawDestMask = FRONT_LEFT_BIT;
1348 ctx->Pixel.ReadBuffer = GL_FRONT;
1349 ctx->Pixel.DriverReadBuffer = GL_FRONT_LEFT;
1350 }
1351
1352
1353 /* Fill in some driver defaults now.
1354 */
1355 ctx->Driver.AllocDepthBuffer = gl_alloc_depth_buffer;
1356 ctx->Driver.ReadDepthSpanFloat = gl_read_depth_span_float;
1357 ctx->Driver.ReadDepthSpanInt = gl_read_depth_span_int;
1358
1359
1360#ifdef PROFILE
1361 init_timings( ctx );
1362#endif
1363
1364#ifdef GL_VERSION_1_1
1365 if (!alloc_proxy_textures(ctx)) {
1366 free_shared_state(ctx, ctx->Shared);
1367 FREE(ctx->VB);
1368 FREE(ctx->PB);
1369 FREE(ctx);
1370 return NULL;
1371 }
1372#endif
1373
1374 gl_init_api_function_pointers( ctx );
1375 ctx->API = ctx->Exec; /* GL_EXECUTE is default */
1376
1377 return ctx;
1378}
1379
1380/* Just reads the config files...
1381 */
1382void gl_context_initialize( GLcontext *ctx )
1383{
1384 gl_read_config_file( ctx );
1385}
1386
1387
1388
1389
1390/*
1391 * Destroy a gl_context structure.
1392 */
1393void gl_destroy_context( GLcontext *ctx )
1394{
1395 if (ctx) {
1396
1397 GLuint i;
1398 struct gl_shine_tab *s, *tmps;
1399
1400#ifdef PROFILE
1401 if (getenv("MESA_PROFILE")) {
1402 print_timings( ctx );
1403 }
1404#endif
1405
1406 gl_matrix_dtr( &ctx->ModelView );
1407 for (i = 0 ; i < MAX_MODELVIEW_STACK_DEPTH ; i++) {
1408 gl_matrix_dtr( &ctx->ModelViewStack[i] );
1409 }
1410 gl_matrix_dtr( &ctx->ProjectionMatrix );
1411 for (i = 0 ; i < MAX_PROJECTION_STACK_DEPTH ; i++) {
1412 gl_matrix_dtr( &ctx->ProjectionStack[i] );
1413 }
1414
1415 FREE( ctx->PB );
1416
1417 if(ctx->input != ctx->VB->IM)
1418 gl_immediate_free( ctx->input );
1419
1420 gl_vb_free( ctx->VB );
1421
1422 ctx->Shared->RefCount--;
1423 assert(ctx->Shared->RefCount>=0);
1424 if (ctx->Shared->RefCount==0) {
1425 /* free shared state */
1426 free_shared_state( ctx, ctx->Shared );
1427 }
1428
1429 foreach_s( s, tmps, ctx->ShineTabList ) {
1430 FREE( s );
1431 }
1432 FREE( ctx->ShineTabList );
1433
1434 /* Free proxy texture objects */
1435 gl_free_texture_object( NULL, ctx->Texture.Proxy1D );
1436 gl_free_texture_object( NULL, ctx->Texture.Proxy2D );
1437 gl_free_texture_object( NULL, ctx->Texture.Proxy3D );
1438
1439 /* Free evaluator data */
1440 if (ctx->EvalMap.Map1Vertex3.Points)
1441 FREE( ctx->EvalMap.Map1Vertex3.Points );
1442 if (ctx->EvalMap.Map1Vertex4.Points)
1443 FREE( ctx->EvalMap.Map1Vertex4.Points );
1444 if (ctx->EvalMap.Map1Index.Points)
1445 FREE( ctx->EvalMap.Map1Index.Points );
1446 if (ctx->EvalMap.Map1Color4.Points)
1447 FREE( ctx->EvalMap.Map1Color4.Points );
1448 if (ctx->EvalMap.Map1Normal.Points)
1449 FREE( ctx->EvalMap.Map1Normal.Points );
1450 if (ctx->EvalMap.Map1Texture1.Points)
1451 FREE( ctx->EvalMap.Map1Texture1.Points );
1452 if (ctx->EvalMap.Map1Texture2.Points)
1453 FREE( ctx->EvalMap.Map1Texture2.Points );
1454 if (ctx->EvalMap.Map1Texture3.Points)
1455 FREE( ctx->EvalMap.Map1Texture3.Points );
1456 if (ctx->EvalMap.Map1Texture4.Points)
1457 FREE( ctx->EvalMap.Map1Texture4.Points );
1458
1459 if (ctx->EvalMap.Map2Vertex3.Points)
1460 FREE( ctx->EvalMap.Map2Vertex3.Points );
1461 if (ctx->EvalMap.Map2Vertex4.Points)
1462 FREE( ctx->EvalMap.Map2Vertex4.Points );
1463 if (ctx->EvalMap.Map2Index.Points)
1464 FREE( ctx->EvalMap.Map2Index.Points );
1465 if (ctx->EvalMap.Map2Color4.Points)
1466 FREE( ctx->EvalMap.Map2Color4.Points );
1467 if (ctx->EvalMap.Map2Normal.Points)
1468 FREE( ctx->EvalMap.Map2Normal.Points );
1469 if (ctx->EvalMap.Map2Texture1.Points)
1470 FREE( ctx->EvalMap.Map2Texture1.Points );
1471 if (ctx->EvalMap.Map2Texture2.Points)
1472 FREE( ctx->EvalMap.Map2Texture2.Points );
1473 if (ctx->EvalMap.Map2Texture3.Points)
1474 FREE( ctx->EvalMap.Map2Texture3.Points );
1475 if (ctx->EvalMap.Map2Texture4.Points)
1476 FREE( ctx->EvalMap.Map2Texture4.Points );
1477
1478 /* Free cache of immediate buffers. */
1479 while (ctx->nr_im_queued-- > 0) {
1480 struct immediate * next = ctx->freed_im_queue->next;
1481 FREE( ctx->freed_im_queue );
1482 ctx->freed_im_queue = next;
1483 }
1484 gl_extensions_dtr(ctx);
1485
1486 FREE( (void *) ctx );
1487
1488#ifndef THREADS
1489 if (ctx==CC) {
1490 CC = NULL;
1491 CURRENT_INPUT = NULL;
1492 }
1493#endif
1494
1495 }
1496}
1497
1498
1499
1500/*
1501 * Create a new framebuffer. A GLframebuffer is a struct which
1502 * encapsulates the depth, stencil and accum buffers and related
1503 * parameters.
1504 * Input: visual - a GLvisual pointer
1505 * Return: pointer to new GLframebuffer struct or NULL if error.
1506 */
1507GLframebuffer *gl_create_framebuffer( GLvisual *visual )
1508{
1509 GLframebuffer *buffer;
1510
1511 buffer = (GLframebuffer *) CALLOC( sizeof(GLframebuffer) );
1512 if (!buffer) {
1513 return NULL;
1514 }
1515
1516 buffer->Visual = visual;
1517
1518 return buffer;
1519}
1520
1521
1522
1523/*
1524 * Free a framebuffer struct and its buffers.
1525 */
1526void gl_destroy_framebuffer( GLframebuffer *buffer )
1527{
1528 if (buffer) {
1529 if (buffer->Depth) {
1530 FREE( buffer->Depth );
1531 }
1532 if (buffer->Accum) {
1533 FREE( buffer->Accum );
1534 }
1535 if (buffer->Stencil) {
1536 FREE( buffer->Stencil );
1537 }
1538 if (buffer->FrontLeftAlpha) {
1539 FREE( buffer->FrontLeftAlpha );
1540 }
1541 if (buffer->BackLeftAlpha) {
1542 FREE( buffer->BackLeftAlpha );
1543 }
1544 if (buffer->FrontRightAlpha) {
1545 FREE( buffer->FrontRightAlpha );
1546 }
1547 if (buffer->BackRightAlpha) {
1548 FREE( buffer->BackRightAlpha );
1549 }
1550 FREE(buffer);
1551 }
1552}
1553
1554
1555
1556/*
1557 * Set the current context, binding the given frame buffer to the context.
1558 */
1559void gl_make_current( GLcontext *ctx, GLframebuffer *buffer )
1560{
1561 GET_CONTEXT;
1562
1563 /* Flush the old context
1564 */
1565 if (CC) {
1566 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(CC, "gl_make_current");
1567 }
1568
1569#ifdef THREADS
1570 /* TODO: unbind old buffer from context? */
1571 set_thread_context( ctx );
1572#else
1573 if (CC && CC->Buffer) {
1574 /* unbind frame buffer from context */
1575 CC->Buffer = NULL;
1576 }
1577
1578 CC = ctx;
1579 if (ctx) {
1580 SET_IMMEDIATE(ctx, ctx->input);
1581 }
1582#endif
1583
1584 if (ctx && buffer) {
1585 /* TODO: check if ctx and buffer's visual match??? */
1586 ctx->Buffer = buffer; /* Bind the frame buffer to the context*/
1587 ctx->NewState = NEW_ALL; /* just to be safe*/
1588 gl_update_state( ctx );
1589 }
1590
1591 /* We can use this to help debug user's problems. Tell the to set
1592 * the MESA_INFO env variable before running their app. Then the
1593 * first time each context is made current we'll print some useful
1594 * information.
1595 */
1596 if (ctx && ctx->FirstTimeCurrent)
1597 {
1598 dprintf(("Mesa GL_VERSION = %s\n", (char *) gl_GetString(ctx, GL_VERSION)));
1599 dprintf(("Mesa GL_RENDERER = %s\n", (char *) gl_GetString(ctx, GL_RENDERER)));
1600 dprintf(("Mesa GL_VENDOR = %s\n", (char *) gl_GetString(ctx, GL_VENDOR)));
1601 dprintf(("Mesa GL_EXTENSIONS = %s\n", (char *) gl_GetString(ctx, GL_EXTENSIONS)));
1602
1603 ctx->FirstTimeCurrent = GL_FALSE;
1604 }
1605}
1606
1607
1608/*
1609 * Return current context handle.
1610 */
1611GLcontext *gl_get_current_context( void )
1612{
1613#ifdef THREADS
1614 return gl_get_thread_context();
1615#else
1616 return CC;
1617#endif
1618}
1619
1620
1621
1622/*
1623 * Copy attribute groups from one context to another.
1624 * Input: src - source context
1625 * dst - destination context
1626 * mask - bitwise OR of GL_*_BIT flags
1627 */
1628void gl_copy_context( const GLcontext *src, GLcontext *dst, GLuint mask )
1629{
1630 if (mask & GL_ACCUM_BUFFER_BIT) {
1631 MEMCPY( &dst->Accum, &src->Accum, sizeof(struct gl_accum_attrib) );
1632 }
1633 if (mask & GL_COLOR_BUFFER_BIT) {
1634 MEMCPY( &dst->Color, &src->Color, sizeof(struct gl_colorbuffer_attrib) );
1635 }
1636 if (mask & GL_CURRENT_BIT) {
1637 MEMCPY( &dst->Current, &src->Current, sizeof(struct gl_current_attrib) );
1638 }
1639 if (mask & GL_DEPTH_BUFFER_BIT) {
1640 MEMCPY( &dst->Depth, &src->Depth, sizeof(struct gl_depthbuffer_attrib) );
1641 }
1642 if (mask & GL_ENABLE_BIT) {
1643 /* no op */
1644 }
1645 if (mask & GL_EVAL_BIT) {
1646 MEMCPY( &dst->Eval, &src->Eval, sizeof(struct gl_eval_attrib) );
1647 }
1648 if (mask & GL_FOG_BIT) {
1649 MEMCPY( &dst->Fog, &src->Fog, sizeof(struct gl_fog_attrib) );
1650 }
1651 if (mask & GL_HINT_BIT) {
1652 MEMCPY( &dst->Hint, &src->Hint, sizeof(struct gl_hint_attrib) );
1653 }
1654 if (mask & GL_LIGHTING_BIT) {
1655 MEMCPY( &dst->Light, &src->Light, sizeof(struct gl_light_attrib) );
1656/* gl_reinit_light_attrib( &dst->Light ); */
1657 }
1658 if (mask & GL_LINE_BIT) {
1659 MEMCPY( &dst->Line, &src->Line, sizeof(struct gl_line_attrib) );
1660 }
1661 if (mask & GL_LIST_BIT) {
1662 MEMCPY( &dst->List, &src->List, sizeof(struct gl_list_attrib) );
1663 }
1664 if (mask & GL_PIXEL_MODE_BIT) {
1665 MEMCPY( &dst->Pixel, &src->Pixel, sizeof(struct gl_pixel_attrib) );
1666 }
1667 if (mask & GL_POINT_BIT) {
1668 MEMCPY( &dst->Point, &src->Point, sizeof(struct gl_point_attrib) );
1669 }
1670 if (mask & GL_POLYGON_BIT) {
1671 MEMCPY( &dst->Polygon, &src->Polygon, sizeof(struct gl_polygon_attrib) );
1672 }
1673 if (mask & GL_POLYGON_STIPPLE_BIT) {
1674#ifdef __WIN32OS2__
1675 MEMCPY( &dst->PolygonStipple, &src->PolygonStipple, 32*sizeof(GLint) );
1676#else
1677 /* Use loop instead of MEMCPY due to problem with Portland Group's
1678 * C compiler. Reported by John Stone.
1679 */
1680 int i;
1681 for (i=0;i<32;i++) {
1682 dst->PolygonStipple[i] = src->PolygonStipple[i];
1683 }
1684#endif
1685 }
1686 if (mask & GL_SCISSOR_BIT) {
1687 MEMCPY( &dst->Scissor, &src->Scissor, sizeof(struct gl_scissor_attrib) );
1688 }
1689 if (mask & GL_STENCIL_BUFFER_BIT) {
1690 MEMCPY( &dst->Stencil, &src->Stencil, sizeof(struct gl_stencil_attrib) );
1691 }
1692 if (mask & GL_TEXTURE_BIT) {
1693 MEMCPY( &dst->Texture, &src->Texture, sizeof(struct gl_texture_attrib) );
1694 }
1695 if (mask & GL_TRANSFORM_BIT) {
1696 MEMCPY( &dst->Transform, &src->Transform, sizeof(struct gl_transform_attrib) );
1697 }
1698 if (mask & GL_VIEWPORT_BIT) {
1699 MEMCPY( &dst->Viewport, &src->Viewport, sizeof(struct gl_viewport_attrib) );
1700 }
1701}
1702
1703
1704
1705/*
1706 * Someday a GLS library or OpenGL-like debugger may call this function
1707 * to register it's own set of API entry points.
1708 * Input: ctx - the context to set API pointers for
1709 * api - if NULL, restore original API pointers
1710 * else, set API function table to this table.
1711 */
1712void gl_set_api_table( GLcontext *ctx, const struct gl_api_table *api )
1713{
1714 if (api) {
1715 MEMCPY( &ctx->API, api, sizeof(struct gl_api_table) );
1716 }
1717 else {
1718 MEMCPY( &ctx->API, &ctx->Exec, sizeof(struct gl_api_table) );
1719 }
1720}
1721
1722
1723
1724
1725/**********************************************************************/
1726/***** Miscellaneous functions *****/
1727/**********************************************************************/
1728
1729
1730/*
1731 * This function is called when the Mesa user has stumbled into a code
1732 * path which may not be implemented fully or correctly.
1733 */
1734void gl_problem( const GLcontext *ctx, const char *s )
1735{
1736#ifdef __WIN32OS2__
1737 dprintf(("OPENGL32: Mesa implementation error: %s\n", s) );
1738 dprintf(("OPENGL32: Report to J.vandenHorn@fibre.a2000.nl\n" ));
1739#else
1740 fprintf( stderr, "Mesa implementation error: %s\n", s );
1741 fprintf( stderr, "Report to mesa-bugs@mesa3d.org\n" );
1742 (void) ctx;
1743#endif
1744}
1745
1746
1747
1748/*
1749 * This is called to inform the user that he or she has tried to do
1750 * something illogical or if there's likely a bug in their program
1751 * (like enabled depth testing without a depth buffer).
1752 */
1753void gl_warning( const GLcontext *ctx, const char *s )
1754{
1755 GLboolean debug;
1756#ifdef DEBUG
1757 debug = GL_TRUE;
1758#else
1759 if (getenv("MESA_DEBUG")) {
1760 debug = GL_TRUE;
1761 }
1762 else {
1763 debug = GL_FALSE;
1764 }
1765#endif
1766#ifdef __WIN32OS2__
1767 dprintf(("OPENGL32: Mesa warning: %s\n", s ));
1768#else
1769 if (debug) {
1770 fprintf( stderr, "Mesa warning: %s\n", s );
1771 }
1772#endif
1773 (void) ctx;
1774}
1775
1776
1777
1778void gl_compile_error( GLcontext *ctx, GLenum error, const char *s )
1779{
1780 if (ctx->CompileFlag)
1781 gl_save_error( ctx, error, s );
1782
1783 if (ctx->ExecuteFlag)
1784 gl_error( ctx, error, s );
1785}
1786
1787
1788/*
1789 * This is Mesa's error handler. Normally, all that's done is the updating
1790 * of the current error value. If Mesa is compiled with -DDEBUG or if the
1791 * environment variable "MESA_DEBUG" is defined then a real error message
1792 * is printed to stderr.
1793 * Input: error - the error value
1794 * s - a diagnostic string
1795 */
1796void gl_error( GLcontext *ctx, GLenum error, const char *s )
1797{
1798 GLboolean debug;
1799
1800#ifdef DEBUG
1801 debug = GL_TRUE;
1802#else
1803 if (getenv("MESA_DEBUG")) {
1804 debug = GL_TRUE;
1805 }
1806 else {
1807 debug = GL_FALSE;
1808 }
1809#endif
1810#ifdef __WIN32OS2__
1811 {
1812#else
1813 if (debug) {
1814#endif
1815 char errstr[1000];
1816
1817 switch (error) {
1818 case GL_NO_ERROR:
1819 strcpy( errstr, "GL_NO_ERROR" );
1820 break;
1821 case GL_INVALID_VALUE:
1822 strcpy( errstr, "GL_INVALID_VALUE" );
1823 break;
1824 case GL_INVALID_ENUM:
1825 strcpy( errstr, "GL_INVALID_ENUM" );
1826 break;
1827 case GL_INVALID_OPERATION:
1828 strcpy( errstr, "GL_INVALID_OPERATION" );
1829 break;
1830 case GL_STACK_OVERFLOW:
1831 strcpy( errstr, "GL_STACK_OVERFLOW" );
1832 break;
1833 case GL_STACK_UNDERFLOW:
1834 strcpy( errstr, "GL_STACK_UNDERFLOW" );
1835 break;
1836 case GL_OUT_OF_MEMORY:
1837 strcpy( errstr, "GL_OUT_OF_MEMORY" );
1838 break;
1839 default:
1840 strcpy( errstr, "unknown" );
1841 break;
1842 }
1843#ifdef __WIN32OS2__
1844 dprintf( ("OPENGL32: Mesa user error: %s in %s\n", errstr, s ));
1845#else
1846 fprintf( stderr, "Mesa user error: %s in %s\n", errstr, s );
1847#endif
1848 }
1849
1850 if (ctx->ErrorValue==GL_NO_ERROR) {
1851 ctx->ErrorValue = error;
1852 }
1853
1854 /* Call device driver's error handler, if any. This is used on the Mac. */
1855 if (ctx->Driver.Error) {
1856 (*ctx->Driver.Error)( ctx );
1857 }
1858}
1859
1860
1861
1862/*
1863 * Execute a glGetError command
1864 */
1865GLenum gl_GetError( GLcontext *ctx )
1866{
1867 GLenum e = ctx->ErrorValue;
1868
1869 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL( ctx, "glGetError", (GLenum) 0);
1870
1871 if (MESA_VERBOSE & VERBOSE_API)
1872 fprintf(stderr, "glGetError <-- %s\n", gl_lookup_enum_by_nr(e));
1873
1874 ctx->ErrorValue = (GLenum) GL_NO_ERROR;
1875 return e;
1876}
1877
1878
1879
1880void gl_ResizeBuffersMESA( GLcontext *ctx )
1881{
1882 GLuint buf_width, buf_height;
1883
1884 if (MESA_VERBOSE & VERBOSE_API)
1885 fprintf(stderr, "glResizeBuffersMESA\n");
1886
1887 /* ask device driver for size of output buffer */
1888 (*ctx->Driver.GetBufferSize)( ctx, &buf_width, &buf_height );
1889
1890 dprintf(("OPENGL32: gl_ResizeBuffersMESA - new w/h %d/%d\n",buf_width,buf_height));
1891
1892 /* see if size of device driver's color buffer (window) has changed */
1893 if (ctx->Buffer->Width == (GLint) buf_width &&
1894 ctx->Buffer->Height == (GLint) buf_height)
1895 return;
1896
1897 ctx->NewState |= NEW_RASTER_OPS; /* to update scissor / window bounds*/
1898
1899 /* save buffer size */
1900 ctx->Buffer->Width = buf_width;
1901 ctx->Buffer->Height = buf_height;
1902
1903 /* Reallocate other buffers if needed. */
1904 if (ctx->Visual->DepthBits>0) {
1905 /* reallocate depth buffer */
1906 (*ctx->Driver.AllocDepthBuffer)( ctx );
1907 }
1908 if (ctx->Visual->StencilBits>0) {
1909 /* reallocate stencil buffer */
1910 gl_alloc_stencil_buffer( ctx );
1911 }
1912 if (ctx->Visual->AccumBits>0) {
1913 /* reallocate accum buffer */
1914 gl_alloc_accum_buffer( ctx );
1915 }
1916 if (ctx->Visual->SoftwareAlpha) {
1917 gl_alloc_alpha_buffers( ctx );
1918 }
1919
1920#ifdef DIVE
1921 DiveResizeBuffers(ctx->Buffer->Width,ctx->Buffer->Height);
1922#endif
1923}
1924
1925
1926
1927
1928/**********************************************************************/
1929/***** State update logic *****/
1930/**********************************************************************/
1931
1932
1933/*
1934 * Since the device driver may or may not support pixel logic ops we
1935 * have to make some extensive tests to determine whether or not
1936 * software-implemented logic operations have to be used.
1937 */
1938static void update_pixel_logic( GLcontext *ctx )
1939{
1940 if (ctx->Visual->RGBAflag) {
1941 /* RGBA mode blending w/ Logic Op */
1942 if (ctx->Color.ColorLogicOpEnabled) {
1943 if (ctx->Driver.LogicOp
1944 && (*ctx->Driver.LogicOp)( ctx, ctx->Color.LogicOp )) {
1945 /* Device driver can do logic, don't have to do it in software */
1946 ctx->Color.SWLogicOpEnabled = GL_FALSE;
1947 }
1948 else {
1949 /* Device driver can't do logic op so we do it in software */
1950 ctx->Color.SWLogicOpEnabled = GL_TRUE;
1951 }
1952 }
1953 else {
1954 /* no logic op */
1955 if (ctx->Driver.LogicOp) {
1956 (void) (*ctx->Driver.LogicOp)( ctx, GL_COPY );
1957 }
1958 ctx->Color.SWLogicOpEnabled = GL_FALSE;
1959 }
1960 }
1961 else {
1962 /* CI mode Logic Op */
1963 if (ctx->Color.IndexLogicOpEnabled) {
1964 if (ctx->Driver.LogicOp
1965 && (*ctx->Driver.LogicOp)( ctx, ctx->Color.LogicOp )) {
1966 /* Device driver can do logic, don't have to do it in software */
1967 ctx->Color.SWLogicOpEnabled = GL_FALSE;
1968 }
1969 else {
1970 /* Device driver can't do logic op so we do it in software */
1971 ctx->Color.SWLogicOpEnabled = GL_TRUE;
1972 }
1973 }
1974 else {
1975 /* no logic op */
1976 if (ctx->Driver.LogicOp) {
1977 (void) (*ctx->Driver.LogicOp)( ctx, GL_COPY );
1978 }
1979 ctx->Color.SWLogicOpEnabled = GL_FALSE;
1980 }
1981 }
1982}
1983
1984
1985
1986/*
1987 * Check if software implemented RGBA or Color Index masking is needed.
1988 */
1989static void update_pixel_masking( GLcontext *ctx )
1990{
1991 if (ctx->Visual->RGBAflag) {
1992 GLuint *colorMask = (GLuint *) ctx->Color.ColorMask;
1993 if (*colorMask == 0xffffffff) {
1994 /* disable masking */
1995 if (ctx->Driver.ColorMask) {
1996 (void) (*ctx->Driver.ColorMask)( ctx, GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE );
1997 }
1998 ctx->Color.SWmasking = GL_FALSE;
1999 }
2000 else {
2001 /* Ask driver to do color masking, if it can't then
2002 * do it in software
2003 */
2004 GLboolean red = ctx->Color.ColorMask[RCOMP] ? GL_TRUE : GL_FALSE;
2005 GLboolean green = ctx->Color.ColorMask[GCOMP] ? GL_TRUE : GL_FALSE;
2006 GLboolean blue = ctx->Color.ColorMask[BCOMP] ? GL_TRUE : GL_FALSE;
2007 GLboolean alpha = ctx->Color.ColorMask[ACOMP] ? GL_TRUE : GL_FALSE;
2008 if (ctx->Driver.ColorMask
2009 && (*ctx->Driver.ColorMask)( ctx, red, green, blue, alpha )) {
2010 ctx->Color.SWmasking = GL_FALSE;
2011 }
2012 else {
2013 ctx->Color.SWmasking = GL_TRUE;
2014 }
2015 }
2016 }
2017 else {
2018 if (ctx->Color.IndexMask==0xffffffff) {
2019 /* disable masking */
2020 if (ctx->Driver.IndexMask) {
2021 (void) (*ctx->Driver.IndexMask)( ctx, 0xffffffff );
2022 }
2023 ctx->Color.SWmasking = GL_FALSE;
2024 }
2025 else {
2026 /* Ask driver to do index masking, if it can't then
2027 * do it in software
2028 */
2029 if (ctx->Driver.IndexMask
2030 && (*ctx->Driver.IndexMask)( ctx, ctx->Color.IndexMask )) {
2031 ctx->Color.SWmasking = GL_FALSE;
2032 }
2033 else {
2034 ctx->Color.SWmasking = GL_TRUE;
2035 }
2036 }
2037 }
2038}
2039
2040
2041static void update_fog_mode( GLcontext *ctx )
2042{
2043 int old_mode = ctx->FogMode;
2044 ctx->FogMode = FOG_NONE;
2045
2046 if (ctx->Fog.Enabled) {
2047 ctx->FogMode = FOG_VERTEX;
2048
2049 if (ctx->Texture.Enabled || ctx->Hint.Fog == GL_NICEST)
2050 ctx->FogMode = FOG_FRAGMENT;
2051
2052 if ( ctx->Driver.GetParameteri &&
2053 ctx->Driver.GetParameteri( ctx, DD_HAVE_HARDWARE_FOG ) )
2054 ctx->FogMode = FOG_FRAGMENT;
2055 }
2056
2057 if (old_mode != ctx->FogMode)
2058 ctx->NewState |= NEW_FOG;
2059}
2060
2061
2062/*
2063 * Recompute the value of ctx->RasterMask, etc. according to
2064 * the current context.
2065 */
2066static void update_rasterflags( GLcontext *ctx )
2067{
2068 ctx->RasterMask = 0;
2069
2070 if (ctx->Color.AlphaEnabled) ctx->RasterMask |= ALPHATEST_BIT;
2071 if (ctx->Color.BlendEnabled) ctx->RasterMask |= BLEND_BIT;
2072 if (ctx->Depth.Test) ctx->RasterMask |= DEPTH_BIT;
2073 if (ctx->FogMode==FOG_FRAGMENT) ctx->RasterMask |= FOG_BIT;
2074 if (ctx->Color.SWLogicOpEnabled) ctx->RasterMask |= LOGIC_OP_BIT;
2075 if (ctx->Scissor.Enabled) ctx->RasterMask |= SCISSOR_BIT;
2076 if (ctx->Stencil.Enabled) ctx->RasterMask |= STENCIL_BIT;
2077 if (ctx->Color.SWmasking) ctx->RasterMask |= MASKING_BIT;
2078
2079 if (ctx->Visual->SoftwareAlpha && ctx->Color.ColorMask[ACOMP]
2080 && ctx->Color.DrawBuffer != GL_NONE)
2081 ctx->RasterMask |= ALPHABUF_BIT;
2082
2083 if ( ctx->Viewport.X<0
2084 || ctx->Viewport.X + ctx->Viewport.Width > ctx->Buffer->Width
2085 || ctx->Viewport.Y<0
2086 || ctx->Viewport.Y + ctx->Viewport.Height > ctx->Buffer->Height) {
2087 ctx->RasterMask |= WINCLIP_BIT;
2088 }
2089
2090 /* If we're not drawing to exactly one color buffer set the
2091 * MULTI_DRAW_BIT flag. Also set it if we're drawing to no
2092 * buffers or the RGBA or CI mask disables all writes.
2093 */
2094
2095 ctx->TriangleCaps &= ~DD_MULTIDRAW;
2096
2097 if (ctx->Color.MultiDrawBuffer) {
2098 ctx->RasterMask |= MULTI_DRAW_BIT;
2099 ctx->TriangleCaps |= DD_MULTIDRAW;
2100 }
2101 else if (ctx->Color.DrawBuffer==GL_NONE) {
2102 ctx->RasterMask |= MULTI_DRAW_BIT;
2103 ctx->TriangleCaps |= DD_MULTIDRAW;
2104 }
2105 else if (ctx->Visual->RGBAflag && ctx->Color.ColorMask==0) {
2106 /* all RGBA channels disabled */
2107 ctx->RasterMask |= MULTI_DRAW_BIT;
2108 ctx->TriangleCaps |= DD_MULTIDRAW;
2109 ctx->Color.DrawDestMask = 0;
2110 }
2111 else if (!ctx->Visual->RGBAflag && ctx->Color.IndexMask==0) {
2112 /* all color index bits disabled */
2113 ctx->RasterMask |= MULTI_DRAW_BIT;
2114 ctx->TriangleCaps |= DD_MULTIDRAW;
2115 ctx->Color.DrawDestMask = 0;
2116 }
2117}
2118
2119
2120void gl_print_state( const char *msg, GLuint state )
2121{
2122 fprintf(stderr,
2123 "%s: (0x%x) %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
2124 msg,
2125 state,
2126 (state & NEW_LIGHTING) ? "lighting, " : "",
2127 (state & NEW_RASTER_OPS) ? "raster-ops, " : "",
2128 (state & NEW_TEXTURING) ? "texturing, " : "",
2129 (state & NEW_POLYGON) ? "polygon, " : "",
2130 (state & NEW_DRVSTATE0) ? "driver-0, " : "",
2131 (state & NEW_DRVSTATE1) ? "driver-1, " : "",
2132 (state & NEW_DRVSTATE2) ? "driver-2, " : "",
2133 (state & NEW_DRVSTATE3) ? "driver-3, " : "",
2134 (state & NEW_MODELVIEW) ? "modelview, " : "",
2135 (state & NEW_PROJECTION) ? "projection, " : "",
2136 (state & NEW_TEXTURE_MATRIX) ? "texture-matrix, " : "",
2137 (state & NEW_USER_CLIP) ? "user-clip, " : "",
2138 (state & NEW_TEXTURE_ENV) ? "texture-env, " : "",
2139 (state & NEW_CLIENT_STATE) ? "client-state, " : "",
2140 (state & NEW_FOG) ? "fog, " : "",
2141 (state & NEW_NORMAL_TRANSFORM) ? "normal-transform, " : "",
2142 (state & NEW_VIEWPORT) ? "viewport, " : "",
2143 (state & NEW_TEXTURE_ENABLE) ? "texture-enable, " : "");
2144}
2145
2146void gl_print_enable_flags( const char *msg, GLuint flags )
2147{
2148 fprintf(stderr,
2149 "%s: (0x%x) %s%s%s%s%s%s%s%s%s%s%s\n",
2150 msg,
2151 flags,
2152 (flags & ENABLE_TEX0) ? "tex-0, " : "",
2153 (flags & ENABLE_TEX1) ? "tex-1, " : "",
2154 (flags & ENABLE_LIGHT) ? "light, " : "",
2155 (flags & ENABLE_FOG) ? "fog, " : "",
2156 (flags & ENABLE_USERCLIP) ? "userclip, " : "",
2157 (flags & ENABLE_TEXGEN0) ? "tex-gen-0, " : "",
2158 (flags & ENABLE_TEXGEN1) ? "tex-gen-1, " : "",
2159 (flags & ENABLE_TEXMAT0) ? "tex-mat-0, " : "",
2160 (flags & ENABLE_TEXMAT1) ? "tex-mat-1, " : "",
2161 (flags & ENABLE_NORMALIZE) ? "normalize, " : "",
2162 (flags & ENABLE_RESCALE) ? "rescale, " : "");
2163}
2164
2165
2166/*
2167 * If ctx->NewState is non-zero then this function MUST be called before
2168 * rendering any primitive. Basically, function pointers and miscellaneous
2169 * flags are updated to reflect the current state of the state machine.
2170 */
2171void gl_update_state( GLcontext *ctx )
2172{
2173 GLuint i;
2174
2175 if (MESA_VERBOSE & VERBOSE_STATE)
2176 gl_print_state("", ctx->NewState);
2177
2178 if (ctx->NewState & NEW_CLIENT_STATE)
2179 gl_update_client_state( ctx );
2180
2181 if ((ctx->NewState & NEW_TEXTURE_ENABLE) &&
2182 (ctx->Enabled & ENABLE_TEX_ANY) != ctx->Texture.Enabled)
2183 ctx->NewState |= NEW_TEXTURING | NEW_RASTER_OPS;
2184
2185 if (ctx->NewState & NEW_TEXTURE_ENV) {
2186 if (ctx->Texture.Unit[0].EnvMode == ctx->Texture.Unit[0].LastEnvMode &&
2187 ctx->Texture.Unit[1].EnvMode == ctx->Texture.Unit[1].LastEnvMode)
2188 ctx->NewState &= ~NEW_TEXTURE_ENV;
2189 ctx->Texture.Unit[0].LastEnvMode = ctx->Texture.Unit[0].EnvMode;
2190 ctx->Texture.Unit[1].LastEnvMode = ctx->Texture.Unit[1].EnvMode;
2191 }
2192
2193 if (ctx->NewState & NEW_TEXTURE_MATRIX) {
2194 ctx->Enabled &= ~(ENABLE_TEXMAT0|ENABLE_TEXMAT1);
2195
2196 for (i=0; i < MAX_TEXTURE_UNITS; i++) {
2197 if (ctx->TextureMatrix[i].flags & MAT_DIRTY_ALL_OVER)
2198 {
2199 gl_matrix_analyze( &ctx->TextureMatrix[i] );
2200 ctx->TextureMatrix[i].flags &= ~MAT_DIRTY_DEPENDENTS;
2201
2202 if (ctx->Texture.Unit[i].Enabled &&
2203 ctx->TextureMatrix[i].type != MATRIX_IDENTITY)
2204 ctx->Enabled |= ENABLE_TEXMAT0 << i;
2205 }
2206 }
2207 }
2208
2209 if (ctx->NewState & (NEW_TEXTURING | NEW_TEXTURE_ENABLE)) {
2210 ctx->Texture.NeedNormals = GL_FALSE;
2211 gl_update_dirty_texobjs(ctx);
2212 ctx->Enabled &= ~(ENABLE_TEXGEN0|ENABLE_TEXGEN1);
2213 ctx->Texture.ReallyEnabled = 0;
2214
2215 for (i=0; i < MAX_TEXTURE_UNITS; i++) {
2216 if (ctx->Texture.Unit[i].Enabled) {
2217 gl_update_texture_unit( ctx, &ctx->Texture.Unit[i] );
2218
2219 ctx->Texture.ReallyEnabled |=
2220 ctx->Texture.Unit[i].ReallyEnabled<<(i*4);
2221
2222 if (ctx->Texture.Unit[i].GenFlags != 0) {
2223 ctx->Enabled |= ENABLE_TEXGEN0 << i;
2224
2225 if (ctx->Texture.Unit[i].GenFlags & TEXGEN_NEED_NORMALS)
2226 {
2227 ctx->Texture.NeedNormals = GL_TRUE;
2228 ctx->Texture.NeedEyeCoords = GL_TRUE;
2229 }
2230
2231 if (ctx->Texture.Unit[i].GenFlags & TEXGEN_NEED_EYE_COORD)
2232 {
2233 ctx->Texture.NeedEyeCoords = GL_TRUE;
2234 }
2235 }
2236 }
2237 }
2238
2239 ctx->Texture.Enabled = ctx->Enabled & ENABLE_TEX_ANY;
2240 ctx->NeedNormals = (ctx->Light.Enabled || ctx->Texture.NeedNormals);
2241 }
2242
2243 if (ctx->NewState & (NEW_RASTER_OPS | NEW_LIGHTING | NEW_FOG)) {
2244
2245
2246 if (ctx->NewState & NEW_RASTER_OPS) {
2247 update_pixel_logic(ctx);
2248 update_pixel_masking(ctx);
2249 update_fog_mode(ctx);
2250 update_rasterflags(ctx);
2251 if (ctx->Driver.Dither) {
2252 (*ctx->Driver.Dither)( ctx, ctx->Color.DitherFlag );
2253 }
2254
2255 /* Check if incoming colors can be modified during rasterization */
2256 if (ctx->Fog.Enabled ||
2257 ctx->Texture.Enabled ||
2258 ctx->Color.BlendEnabled ||
2259 ctx->Color.SWmasking ||
2260 ctx->Color.SWLogicOpEnabled) {
2261 ctx->MutablePixels = GL_TRUE;
2262 }
2263 else {
2264 ctx->MutablePixels = GL_FALSE;
2265 }
2266
2267 /* update scissor region */
2268
2269 ctx->Buffer->Xmin = 0;
2270 ctx->Buffer->Ymin = 0;
2271 ctx->Buffer->Xmax = ctx->Buffer->Width-1;
2272 ctx->Buffer->Ymax = ctx->Buffer->Height-1;
2273 if (ctx->Scissor.Enabled) {
2274 if (ctx->Scissor.X > ctx->Buffer->Xmin) {
2275 ctx->Buffer->Xmin = ctx->Scissor.X;
2276 }
2277 if (ctx->Scissor.Y > ctx->Buffer->Ymin) {
2278 ctx->Buffer->Ymin = ctx->Scissor.Y;
2279 }
2280 if (ctx->Scissor.X + ctx->Scissor.Width - 1 < ctx->Buffer->Xmax) {
2281 ctx->Buffer->Xmax = ctx->Scissor.X + ctx->Scissor.Width - 1;
2282 }
2283 if (ctx->Scissor.Y + ctx->Scissor.Height - 1 < ctx->Buffer->Ymax) {
2284 ctx->Buffer->Ymax = ctx->Scissor.Y + ctx->Scissor.Height - 1;
2285 }
2286 }
2287
2288 /* The driver isn't managing the depth buffer.
2289 */
2290 if (ctx->Driver.AllocDepthBuffer == gl_alloc_depth_buffer)
2291 {
2292 if (ctx->Depth.Mask) {
2293 switch (ctx->Depth.Func) {
2294 case GL_LESS:
2295 ctx->Driver.DepthTestSpan = gl_depth_test_span_less;
2296 ctx->Driver.DepthTestPixels = gl_depth_test_pixels_less;
2297 break;
2298 case GL_GREATER:
2299 ctx->Driver.DepthTestSpan = gl_depth_test_span_greater;
2300 ctx->Driver.DepthTestPixels = gl_depth_test_pixels_greater;
2301 break;
2302 default:
2303 ctx->Driver.DepthTestSpan = gl_depth_test_span_generic;
2304 ctx->Driver.DepthTestPixels = gl_depth_test_pixels_generic;
2305 }
2306 }
2307 else {
2308 ctx->Driver.DepthTestSpan = gl_depth_test_span_generic;
2309 ctx->Driver.DepthTestPixels = gl_depth_test_pixels_generic;
2310 }
2311 }
2312 }
2313
2314 if (ctx->NewState & NEW_LIGHTING) {
2315 ctx->TriangleCaps &= ~(DD_TRI_LIGHT_TWOSIDE|DD_LIGHTING_CULL);
2316 if (ctx->Light.Enabled) {
2317 if (ctx->Light.Model.TwoSide)
2318 ctx->TriangleCaps |= (DD_TRI_LIGHT_TWOSIDE|DD_LIGHTING_CULL);
2319 gl_update_lighting(ctx);
2320 }
2321 }
2322 }
2323
2324 if (ctx->NewState & (NEW_POLYGON | NEW_LIGHTING)) {
2325
2326 ctx->TriangleCaps &= ~DD_TRI_CULL_FRONT_BACK;
2327
2328 if (ctx->NewState & NEW_POLYGON) {
2329 /* Setup CullBits bitmask */
2330 if (ctx->Polygon.CullFlag) {
2331 ctx->backface_sign = 1;
2332 switch(ctx->Polygon.CullFaceMode) {
2333 case GL_BACK:
2334 if(ctx->Polygon.FrontFace==GL_CCW)
2335 ctx->backface_sign = -1;
2336 ctx->Polygon.CullBits = 1;
2337 break;
2338 case GL_FRONT:
2339 if(ctx->Polygon.FrontFace!=GL_CCW)
2340 ctx->backface_sign = -1;
2341 ctx->Polygon.CullBits = 2;
2342 break;
2343 default:
2344 case GL_FRONT_AND_BACK:
2345 ctx->backface_sign = 0;
2346 ctx->Polygon.CullBits = 0;
2347 ctx->TriangleCaps |= DD_TRI_CULL_FRONT_BACK;
2348 break;
2349 }
2350 }
2351 else {
2352 ctx->Polygon.CullBits = 3;
2353 ctx->backface_sign = 0;
2354 }
2355
2356 /* Any Polygon offsets enabled? */
2357 ctx->TriangleCaps &= ~DD_TRI_OFFSET;
2358
2359 if (ctx->Polygon.OffsetPoint ||
2360 ctx->Polygon.OffsetLine ||
2361 ctx->Polygon.OffsetFill)
2362 ctx->TriangleCaps |= DD_TRI_OFFSET;
2363
2364 /* reset Z offsets now */
2365 ctx->PointZoffset = 0.0;
2366 ctx->LineZoffset = 0.0;
2367 ctx->PolygonZoffset = 0.0;
2368 }
2369 }
2370
2371 if (ctx->NewState & ~(NEW_CLIENT_STATE|
2372 NEW_DRIVER_STATE|NEW_USER_CLIP|
2373 NEW_POLYGON))
2374 gl_update_clipmask(ctx);
2375
2376 if (ctx->NewState & (NEW_LIGHTING|
2377 NEW_RASTER_OPS|
2378 NEW_TEXTURING|
2379 NEW_TEXTURE_ENABLE|
2380 NEW_TEXTURE_ENV|
2381 NEW_POLYGON|
2382 NEW_DRVSTATE0|
2383 NEW_DRVSTATE1|
2384 NEW_DRVSTATE2|
2385 NEW_DRVSTATE3|
2386 NEW_USER_CLIP))
2387 {
2388 ctx->IndirectTriangles = ctx->TriangleCaps & ~ctx->Driver.TriangleCaps;
2389 ctx->IndirectTriangles |= DD_SW_RASTERIZE;
2390
2391 if (MESA_VERBOSE&VERBOSE_CULL)
2392 gl_print_tri_caps("initial indirect tris", ctx->IndirectTriangles);
2393
2394 ctx->Driver.PointsFunc = NULL;
2395 ctx->Driver.LineFunc = NULL;
2396 ctx->Driver.TriangleFunc = NULL;
2397 ctx->Driver.QuadFunc = NULL;
2398 ctx->Driver.RectFunc = NULL;
2399 ctx->Driver.RenderVBClippedTab = NULL;
2400 ctx->Driver.RenderVBCulledTab = NULL;
2401 ctx->Driver.RenderVBRawTab = NULL;
2402
2403 /*
2404 * Here the driver sets up all the ctx->Driver function pointers to
2405 * it's specific, private functions.
2406 */
2407 ctx->Driver.UpdateState(ctx);
2408
2409 if (MESA_VERBOSE&VERBOSE_CULL)
2410 gl_print_tri_caps("indirect tris", ctx->IndirectTriangles);
2411
2412 /*
2413 * In case the driver didn't hook in an optimized point, line or
2414 * triangle function we'll now select "core/fallback" point, line
2415 * and triangle functions.
2416 */
2417 if (ctx->IndirectTriangles & DD_SW_RASTERIZE) {
2418 gl_set_point_function(ctx);
2419 gl_set_line_function(ctx);
2420 gl_set_triangle_function(ctx);
2421 gl_set_quad_function(ctx);
2422
2423 if ((ctx->IndirectTriangles &
2424 (DD_TRI_SW_RASTERIZE|DD_QUAD_SW_RASTERIZE|DD_TRI_CULL)) ==
2425 (DD_TRI_SW_RASTERIZE|DD_QUAD_SW_RASTERIZE|DD_TRI_CULL))
2426 ctx->IndirectTriangles &= ~DD_TRI_CULL;
2427 }
2428
2429 if (MESA_VERBOSE&VERBOSE_CULL)
2430 gl_print_tri_caps("indirect tris 2", ctx->IndirectTriangles);
2431
2432 gl_set_render_vb_function(ctx);
2433 }
2434
2435 /* Should only be calc'd when !need_eye_coords and not culling.
2436 */
2437 if (ctx->NewState & (NEW_MODELVIEW|NEW_PROJECTION)) {
2438 if (ctx->NewState & NEW_MODELVIEW) {
2439 gl_matrix_analyze( &ctx->ModelView );
2440 ctx->ProjectionMatrix.flags &= ~MAT_DIRTY_DEPENDENTS;
2441 }
2442
2443 if (ctx->NewState & NEW_PROJECTION) {
2444 gl_matrix_analyze( &ctx->ProjectionMatrix );
2445 ctx->ProjectionMatrix.flags &= ~MAT_DIRTY_DEPENDENTS;
2446
2447 if (ctx->Transform.AnyClip) {
2448 gl_update_userclip( ctx );
2449 }
2450 }
2451
2452 gl_calculate_model_project_matrix( ctx );
2453 ctx->ModelProjectWinMatrixUptodate = 0;
2454 }
2455
2456 /* Figure out whether we can light in object space or not. If we
2457 * can, find the current positions of the lights in object space
2458 */
2459 if ((ctx->Enabled & (ENABLE_POINT_ATTEN | ENABLE_LIGHT | ENABLE_FOG |
2460 ENABLE_TEXGEN0 | ENABLE_TEXGEN1)) &&
2461 (ctx->NewState & (NEW_LIGHTING |
2462 NEW_FOG |
2463 NEW_MODELVIEW |
2464 NEW_PROJECTION |
2465 NEW_TEXTURING |
2466 NEW_RASTER_OPS |
2467 NEW_USER_CLIP)))
2468 {
2469 GLboolean oldcoord, oldnorm;
2470
2471 oldcoord = ctx->NeedEyeCoords;
2472 oldnorm = ctx->NeedEyeNormals;
2473
2474 ctx->NeedNormals = (ctx->Light.Enabled || ctx->Texture.NeedNormals);
2475 ctx->NeedEyeCoords = (ctx->FogMode == FOG_VERTEX ||
2476 ctx->Point.Attenuated);
2477 ctx->NeedEyeNormals = GL_FALSE;
2478
2479 if (ctx->Light.Enabled) {
2480 if (ctx->Light.Flags & LIGHT_POSITIONAL) {
2481 /* Need length for attenuation */
2482 if (!TEST_MAT_FLAGS( &ctx->ModelView, MAT_FLAGS_LENGTH_PRESERVING))
2483 ctx->NeedEyeCoords = GL_TRUE;
2484 } else if (ctx->Light.NeedVertices) {
2485 /* Need angle for spot calculations */
2486 if (!TEST_MAT_FLAGS( &ctx->ModelView, MAT_FLAGS_ANGLE_PRESERVING))
2487 ctx->NeedEyeCoords = GL_TRUE;
2488 }
2489 ctx->NeedEyeNormals = ctx->NeedEyeCoords;
2490 }
2491 if (ctx->Texture.Enabled || ctx->RenderMode==GL_FEEDBACK) {
2492 if (ctx->Texture.NeedEyeCoords) ctx->NeedEyeCoords = GL_TRUE;
2493 if (ctx->Texture.NeedNormals)
2494 ctx->NeedNormals = ctx->NeedEyeNormals = GL_TRUE;
2495 }
2496
2497 ctx->vb_proj_matrix = &ctx->ModelProjectMatrix;
2498
2499 if (ctx->NeedEyeCoords)
2500 ctx->vb_proj_matrix = &ctx->ProjectionMatrix;
2501
2502 if (ctx->Light.Enabled) {
2503 gl_update_lighting_function(ctx);
2504
2505 if ( (ctx->NewState & NEW_LIGHTING) ||
2506 ((ctx->NewState & (NEW_MODELVIEW| NEW_PROJECTION)) &&
2507 !ctx->NeedEyeCoords) ||
2508 oldcoord != ctx->NeedEyeCoords ||
2509 oldnorm != ctx->NeedEyeNormals) {
2510 gl_compute_light_positions(ctx);
2511 }
2512
2513 ctx->rescale_factor = 1.0F;
2514
2515 if (ctx->ModelView.flags & (MAT_FLAG_UNIFORM_SCALE |
2516 MAT_FLAG_GENERAL_SCALE |
2517 MAT_FLAG_GENERAL_3D |
2518 MAT_FLAG_GENERAL) )
2519
2520 {
2521 GLfloat *m = ctx->ModelView.inv;
2522 GLfloat f = m[2]*m[2] + m[6]*m[6] + m[10]*m[10];
2523 if (f > 1e-12 && (f-1)*(f-1) > 1e-12)
2524 ctx->rescale_factor = 1.0/GL_SQRT(f);
2525 }
2526 }
2527
2528 gl_update_normal_transform( ctx );
2529 }
2530
2531 gl_update_pipelines(ctx);
2532 ctx->NewState = 0;
2533}
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