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Merge branch 'mesa_7_7_branch'
[mesa.git] / src / mesa / main / attrib.c
1 /*
2 * Mesa 3-D graphics library
3 * Version: 7.6
4 *
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26 #include "glheader.h"
27 #include "imports.h"
28 #include "accum.h"
29 #include "arrayobj.h"
30 #include "attrib.h"
31 #include "blend.h"
32 #include "buffers.h"
33 #include "bufferobj.h"
34 #include "clear.h"
35 #include "colormac.h"
36 #include "colortab.h"
37 #include "context.h"
38 #include "depth.h"
39 #include "enable.h"
40 #include "enums.h"
41 #include "fog.h"
42 #include "hint.h"
43 #include "light.h"
44 #include "lines.h"
45 #include "matrix.h"
46 #include "multisample.h"
47 #include "points.h"
48 #include "polygon.h"
49 #include "scissor.h"
50 #include "simple_list.h"
51 #include "stencil.h"
52 #include "texenv.h"
53 #include "texgen.h"
54 #include "texobj.h"
55 #include "texparam.h"
56 #include "texstate.h"
57 #include "varray.h"
58 #include "viewport.h"
59 #include "mtypes.h"
60 #include "glapi/dispatch.h"
61
62
63 /**
64 * glEnable()/glDisable() attribute group (GL_ENABLE_BIT).
65 */
66 struct gl_enable_attrib
67 {
68 GLboolean AlphaTest;
69 GLboolean AutoNormal;
70 GLboolean Blend;
71 GLbitfield ClipPlanes;
72 GLboolean ColorMaterial;
73 GLboolean ColorTable[COLORTABLE_MAX];
74 GLboolean Convolution1D;
75 GLboolean Convolution2D;
76 GLboolean Separable2D;
77 GLboolean CullFace;
78 GLboolean DepthClamp;
79 GLboolean DepthTest;
80 GLboolean Dither;
81 GLboolean Fog;
82 GLboolean Histogram;
83 GLboolean Light[MAX_LIGHTS];
84 GLboolean Lighting;
85 GLboolean LineSmooth;
86 GLboolean LineStipple;
87 GLboolean IndexLogicOp;
88 GLboolean ColorLogicOp;
89
90 GLboolean Map1Color4;
91 GLboolean Map1Index;
92 GLboolean Map1Normal;
93 GLboolean Map1TextureCoord1;
94 GLboolean Map1TextureCoord2;
95 GLboolean Map1TextureCoord3;
96 GLboolean Map1TextureCoord4;
97 GLboolean Map1Vertex3;
98 GLboolean Map1Vertex4;
99 GLboolean Map1Attrib[16]; /* GL_NV_vertex_program */
100 GLboolean Map2Color4;
101 GLboolean Map2Index;
102 GLboolean Map2Normal;
103 GLboolean Map2TextureCoord1;
104 GLboolean Map2TextureCoord2;
105 GLboolean Map2TextureCoord3;
106 GLboolean Map2TextureCoord4;
107 GLboolean Map2Vertex3;
108 GLboolean Map2Vertex4;
109 GLboolean Map2Attrib[16]; /* GL_NV_vertex_program */
110
111 GLboolean MinMax;
112 GLboolean Normalize;
113 GLboolean PixelTexture;
114 GLboolean PointSmooth;
115 GLboolean PolygonOffsetPoint;
116 GLboolean PolygonOffsetLine;
117 GLboolean PolygonOffsetFill;
118 GLboolean PolygonSmooth;
119 GLboolean PolygonStipple;
120 GLboolean RescaleNormals;
121 GLboolean Scissor;
122 GLboolean Stencil;
123 GLboolean StencilTwoSide; /* GL_EXT_stencil_two_side */
124 GLboolean MultisampleEnabled; /* GL_ARB_multisample */
125 GLboolean SampleAlphaToCoverage; /* GL_ARB_multisample */
126 GLboolean SampleAlphaToOne; /* GL_ARB_multisample */
127 GLboolean SampleCoverage; /* GL_ARB_multisample */
128 GLboolean SampleCoverageInvert; /* GL_ARB_multisample */
129 GLboolean RasterPositionUnclipped; /* GL_IBM_rasterpos_clip */
130
131 GLbitfield Texture[MAX_TEXTURE_UNITS];
132 GLbitfield TexGen[MAX_TEXTURE_UNITS];
133
134 /* SGI_texture_color_table */
135 GLboolean TextureColorTable[MAX_TEXTURE_UNITS];
136
137 /* GL_ARB_vertex_program / GL_NV_vertex_program */
138 GLboolean VertexProgram;
139 GLboolean VertexProgramPointSize;
140 GLboolean VertexProgramTwoSide;
141
142 /* GL_ARB_point_sprite / GL_NV_point_sprite */
143 GLboolean PointSprite;
144 GLboolean FragmentShaderATI;
145 };
146
147
148 /**
149 * Node for the attribute stack.
150 */
151 struct gl_attrib_node
152 {
153 GLbitfield kind;
154 void *data;
155 struct gl_attrib_node *next;
156 };
157
158
159
160 /**
161 * Special struct for saving/restoring texture state (GL_TEXTURE_BIT)
162 */
163 struct texture_state
164 {
165 struct gl_texture_attrib Texture; /**< The usual context state */
166
167 /** to save per texture object state (wrap modes, filters, etc): */
168 struct gl_texture_object SavedObj[MAX_TEXTURE_UNITS][NUM_TEXTURE_TARGETS];
169
170 /**
171 * To save references to texture objects (so they don't get accidentally
172 * deleted while saved in the attribute stack).
173 */
174 struct gl_texture_object *SavedTexRef[MAX_TEXTURE_UNITS][NUM_TEXTURE_TARGETS];
175 };
176
177
178 #if FEATURE_attrib_stack
179
180
181 /**
182 * Allocate new attribute node of given type/kind. Attach payload data.
183 * Insert it into the linked list named by 'head'.
184 */
185 static void
186 save_attrib_data(struct gl_attrib_node **head,
187 GLbitfield kind, void *payload)
188 {
189 struct gl_attrib_node *n = MALLOC_STRUCT(gl_attrib_node);
190 if (n) {
191 n->kind = kind;
192 n->data = payload;
193 /* insert at head */
194 n->next = *head;
195 *head = n;
196 }
197 else {
198 /* out of memory! */
199 }
200 }
201
202
203 void GLAPIENTRY
204 _mesa_PushAttrib(GLbitfield mask)
205 {
206 struct gl_attrib_node *head;
207
208 GET_CURRENT_CONTEXT(ctx);
209 ASSERT_OUTSIDE_BEGIN_END(ctx);
210
211 if (MESA_VERBOSE & VERBOSE_API)
212 _mesa_debug(ctx, "glPushAttrib %x\n", (int) mask);
213
214 if (ctx->AttribStackDepth >= MAX_ATTRIB_STACK_DEPTH) {
215 _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
216 return;
217 }
218
219 /* Build linked list of attribute nodes which save all attribute */
220 /* groups specified by the mask. */
221 head = NULL;
222
223 if (mask & GL_ACCUM_BUFFER_BIT) {
224 struct gl_accum_attrib *attr;
225 attr = MALLOC_STRUCT( gl_accum_attrib );
226 MEMCPY( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );
227 save_attrib_data(&head, GL_ACCUM_BUFFER_BIT, attr);
228 }
229
230 if (mask & GL_COLOR_BUFFER_BIT) {
231 GLuint i;
232 struct gl_colorbuffer_attrib *attr;
233 attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
234 MEMCPY( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
235 /* push the Draw FBO's DrawBuffer[] state, not ctx->Color.DrawBuffer[] */
236 for (i = 0; i < ctx->Const.MaxDrawBuffers; i ++)
237 attr->DrawBuffer[i] = ctx->DrawBuffer->ColorDrawBuffer[i];
238 save_attrib_data(&head, GL_COLOR_BUFFER_BIT, attr);
239 }
240
241 if (mask & GL_CURRENT_BIT) {
242 struct gl_current_attrib *attr;
243 FLUSH_CURRENT( ctx, 0 );
244 attr = MALLOC_STRUCT( gl_current_attrib );
245 MEMCPY( attr, &ctx->Current, sizeof(struct gl_current_attrib) );
246 save_attrib_data(&head, GL_CURRENT_BIT, attr);
247 }
248
249 if (mask & GL_DEPTH_BUFFER_BIT) {
250 struct gl_depthbuffer_attrib *attr;
251 attr = MALLOC_STRUCT( gl_depthbuffer_attrib );
252 MEMCPY( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );
253 save_attrib_data(&head, GL_DEPTH_BUFFER_BIT, attr);
254 }
255
256 if (mask & GL_ENABLE_BIT) {
257 struct gl_enable_attrib *attr;
258 GLuint i;
259 attr = MALLOC_STRUCT( gl_enable_attrib );
260 /* Copy enable flags from all other attributes into the enable struct. */
261 attr->AlphaTest = ctx->Color.AlphaEnabled;
262 attr->AutoNormal = ctx->Eval.AutoNormal;
263 attr->Blend = ctx->Color.BlendEnabled;
264 attr->ClipPlanes = ctx->Transform.ClipPlanesEnabled;
265 attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;
266 for (i = 0; i < COLORTABLE_MAX; i++) {
267 attr->ColorTable[i] = ctx->Pixel.ColorTableEnabled[i];
268 }
269 attr->Convolution1D = ctx->Pixel.Convolution1DEnabled;
270 attr->Convolution2D = ctx->Pixel.Convolution2DEnabled;
271 attr->Separable2D = ctx->Pixel.Separable2DEnabled;
272 attr->CullFace = ctx->Polygon.CullFlag;
273 attr->DepthClamp = ctx->Transform.DepthClamp;
274 attr->DepthTest = ctx->Depth.Test;
275 attr->Dither = ctx->Color.DitherFlag;
276 attr->Fog = ctx->Fog.Enabled;
277 for (i = 0; i < ctx->Const.MaxLights; i++) {
278 attr->Light[i] = ctx->Light.Light[i].Enabled;
279 }
280 attr->Lighting = ctx->Light.Enabled;
281 attr->LineSmooth = ctx->Line.SmoothFlag;
282 attr->LineStipple = ctx->Line.StippleFlag;
283 attr->Histogram = ctx->Pixel.HistogramEnabled;
284 attr->MinMax = ctx->Pixel.MinMaxEnabled;
285 attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
286 attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
287 attr->Map1Color4 = ctx->Eval.Map1Color4;
288 attr->Map1Index = ctx->Eval.Map1Index;
289 attr->Map1Normal = ctx->Eval.Map1Normal;
290 attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
291 attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
292 attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
293 attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
294 attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
295 attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
296 MEMCPY(attr->Map1Attrib, ctx->Eval.Map1Attrib, sizeof(ctx->Eval.Map1Attrib));
297 attr->Map2Color4 = ctx->Eval.Map2Color4;
298 attr->Map2Index = ctx->Eval.Map2Index;
299 attr->Map2Normal = ctx->Eval.Map2Normal;
300 attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
301 attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
302 attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
303 attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
304 attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
305 attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
306 MEMCPY(attr->Map2Attrib, ctx->Eval.Map2Attrib, sizeof(ctx->Eval.Map2Attrib));
307 attr->Normalize = ctx->Transform.Normalize;
308 attr->RasterPositionUnclipped = ctx->Transform.RasterPositionUnclipped;
309 attr->PointSmooth = ctx->Point.SmoothFlag;
310 attr->PointSprite = ctx->Point.PointSprite;
311 attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;
312 attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;
313 attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;
314 attr->PolygonSmooth = ctx->Polygon.SmoothFlag;
315 attr->PolygonStipple = ctx->Polygon.StippleFlag;
316 attr->RescaleNormals = ctx->Transform.RescaleNormals;
317 attr->Scissor = ctx->Scissor.Enabled;
318 attr->Stencil = ctx->Stencil.Enabled;
319 attr->StencilTwoSide = ctx->Stencil.TestTwoSide;
320 attr->MultisampleEnabled = ctx->Multisample.Enabled;
321 attr->SampleAlphaToCoverage = ctx->Multisample.SampleAlphaToCoverage;
322 attr->SampleAlphaToOne = ctx->Multisample.SampleAlphaToOne;
323 attr->SampleCoverage = ctx->Multisample.SampleCoverage;
324 attr->SampleCoverageInvert = ctx->Multisample.SampleCoverageInvert;
325 for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
326 attr->Texture[i] = ctx->Texture.Unit[i].Enabled;
327 attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
328 attr->TextureColorTable[i] = ctx->Texture.Unit[i].ColorTableEnabled;
329 }
330 /* GL_NV_vertex_program */
331 attr->VertexProgram = ctx->VertexProgram.Enabled;
332 attr->VertexProgramPointSize = ctx->VertexProgram.PointSizeEnabled;
333 attr->VertexProgramTwoSide = ctx->VertexProgram.TwoSideEnabled;
334 save_attrib_data(&head, GL_ENABLE_BIT, attr);
335 }
336
337 if (mask & GL_EVAL_BIT) {
338 struct gl_eval_attrib *attr;
339 attr = MALLOC_STRUCT( gl_eval_attrib );
340 MEMCPY( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
341 save_attrib_data(&head, GL_EVAL_BIT, attr);
342 }
343
344 if (mask & GL_FOG_BIT) {
345 struct gl_fog_attrib *attr;
346 attr = MALLOC_STRUCT( gl_fog_attrib );
347 MEMCPY( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
348 save_attrib_data(&head, GL_FOG_BIT, attr);
349 }
350
351 if (mask & GL_HINT_BIT) {
352 struct gl_hint_attrib *attr;
353 attr = MALLOC_STRUCT( gl_hint_attrib );
354 MEMCPY( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
355 save_attrib_data(&head, GL_HINT_BIT, attr);
356 }
357
358 if (mask & GL_LIGHTING_BIT) {
359 struct gl_light_attrib *attr;
360 FLUSH_CURRENT(ctx, 0); /* flush material changes */
361 attr = MALLOC_STRUCT( gl_light_attrib );
362 MEMCPY( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
363 save_attrib_data(&head, GL_LIGHTING_BIT, attr);
364 }
365
366 if (mask & GL_LINE_BIT) {
367 struct gl_line_attrib *attr;
368 attr = MALLOC_STRUCT( gl_line_attrib );
369 MEMCPY( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
370 save_attrib_data(&head, GL_LINE_BIT, attr);
371 }
372
373 if (mask & GL_LIST_BIT) {
374 struct gl_list_attrib *attr;
375 attr = MALLOC_STRUCT( gl_list_attrib );
376 MEMCPY( attr, &ctx->List, sizeof(struct gl_list_attrib) );
377 save_attrib_data(&head, GL_LIST_BIT, attr);
378 }
379
380 if (mask & GL_PIXEL_MODE_BIT) {
381 struct gl_pixel_attrib *attr;
382 attr = MALLOC_STRUCT( gl_pixel_attrib );
383 MEMCPY( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
384 /* push the Read FBO's ReadBuffer state, not ctx->Pixel.ReadBuffer */
385 attr->ReadBuffer = ctx->ReadBuffer->ColorReadBuffer;
386 save_attrib_data(&head, GL_PIXEL_MODE_BIT, attr);
387 }
388
389 if (mask & GL_POINT_BIT) {
390 struct gl_point_attrib *attr;
391 attr = MALLOC_STRUCT( gl_point_attrib );
392 MEMCPY( attr, &ctx->Point, sizeof(struct gl_point_attrib) );
393 save_attrib_data(&head, GL_POINT_BIT, attr);
394 }
395
396 if (mask & GL_POLYGON_BIT) {
397 struct gl_polygon_attrib *attr;
398 attr = MALLOC_STRUCT( gl_polygon_attrib );
399 MEMCPY( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );
400 save_attrib_data(&head, GL_POLYGON_BIT, attr);
401 }
402
403 if (mask & GL_POLYGON_STIPPLE_BIT) {
404 GLuint *stipple;
405 stipple = (GLuint *) MALLOC( 32*sizeof(GLuint) );
406 MEMCPY( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );
407 save_attrib_data(&head, GL_POLYGON_STIPPLE_BIT, stipple);
408 }
409
410 if (mask & GL_SCISSOR_BIT) {
411 struct gl_scissor_attrib *attr;
412 attr = MALLOC_STRUCT( gl_scissor_attrib );
413 MEMCPY( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );
414 save_attrib_data(&head, GL_SCISSOR_BIT, attr);
415 }
416
417 if (mask & GL_STENCIL_BUFFER_BIT) {
418 struct gl_stencil_attrib *attr;
419 attr = MALLOC_STRUCT( gl_stencil_attrib );
420 MEMCPY( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );
421 save_attrib_data(&head, GL_STENCIL_BUFFER_BIT, attr);
422 }
423
424 if (mask & GL_TEXTURE_BIT) {
425 struct texture_state *texstate = CALLOC_STRUCT(texture_state);
426 GLuint u, tex;
427
428 if (!texstate) {
429 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glPushAttrib(GL_TEXTURE_BIT)");
430 goto end;
431 }
432
433 _mesa_lock_context_textures(ctx);
434
435 /* copy/save the bulk of texture state here */
436 _mesa_memcpy(&texstate->Texture, &ctx->Texture, sizeof(ctx->Texture));
437
438 /* Save references to the currently bound texture objects so they don't
439 * accidentally get deleted while referenced in the attribute stack.
440 */
441 for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
442 for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {
443 _mesa_reference_texobj(&texstate->SavedTexRef[u][tex],
444 ctx->Texture.Unit[u].CurrentTex[tex]);
445 }
446 }
447
448 /* copy state/contents of the currently bound texture objects */
449 for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
450 for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {
451 _mesa_copy_texture_object(&texstate->SavedObj[u][tex],
452 ctx->Texture.Unit[u].CurrentTex[tex]);
453 }
454 }
455
456 _mesa_unlock_context_textures(ctx);
457
458 save_attrib_data(&head, GL_TEXTURE_BIT, texstate);
459 }
460
461 if (mask & GL_TRANSFORM_BIT) {
462 struct gl_transform_attrib *attr;
463 attr = MALLOC_STRUCT( gl_transform_attrib );
464 MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
465 save_attrib_data(&head, GL_TRANSFORM_BIT, attr);
466 }
467
468 if (mask & GL_VIEWPORT_BIT) {
469 struct gl_viewport_attrib *attr;
470 attr = MALLOC_STRUCT( gl_viewport_attrib );
471 MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
472 save_attrib_data(&head, GL_VIEWPORT_BIT, attr);
473 }
474
475 /* GL_ARB_multisample */
476 if (mask & GL_MULTISAMPLE_BIT_ARB) {
477 struct gl_multisample_attrib *attr;
478 attr = MALLOC_STRUCT( gl_multisample_attrib );
479 MEMCPY( attr, &ctx->Multisample, sizeof(struct gl_multisample_attrib) );
480 save_attrib_data(&head, GL_MULTISAMPLE_BIT_ARB, attr);
481 }
482
483 end:
484 ctx->AttribStack[ctx->AttribStackDepth] = head;
485 ctx->AttribStackDepth++;
486 }
487
488
489
490 static void
491 pop_enable_group(GLcontext *ctx, const struct gl_enable_attrib *enable)
492 {
493 const GLuint curTexUnitSave = ctx->Texture.CurrentUnit;
494 GLuint i;
495
496 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM) \
497 if ((VALUE) != (NEWVALUE)) { \
498 _mesa_set_enable( ctx, ENUM, (NEWVALUE) ); \
499 }
500
501 TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
502 if (ctx->Color.BlendEnabled != enable->Blend) {
503 if (ctx->Extensions.EXT_draw_buffers2) {
504 GLuint i;
505 for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
506 _mesa_set_enablei(ctx, GL_BLEND, i, (enable->Blend >> i) & 1);
507 }
508 }
509 else {
510 _mesa_set_enable(ctx, GL_BLEND, (enable->Blend & 1));
511 }
512 }
513
514 for (i=0;i<MAX_CLIP_PLANES;i++) {
515 const GLuint mask = 1 << i;
516 if ((ctx->Transform.ClipPlanesEnabled & mask) != (enable->ClipPlanes & mask))
517 _mesa_set_enable(ctx, (GLenum) (GL_CLIP_PLANE0 + i),
518 (GLboolean) ((enable->ClipPlanes & mask) ? GL_TRUE : GL_FALSE));
519 }
520
521 TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial,
522 GL_COLOR_MATERIAL);
523 TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled[COLORTABLE_PRECONVOLUTION],
524 enable->ColorTable[COLORTABLE_PRECONVOLUTION],
525 GL_COLOR_TABLE);
526 TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled[COLORTABLE_POSTCONVOLUTION],
527 enable->ColorTable[COLORTABLE_POSTCONVOLUTION],
528 GL_POST_CONVOLUTION_COLOR_TABLE);
529 TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled[COLORTABLE_POSTCOLORMATRIX],
530 enable->ColorTable[COLORTABLE_POSTCOLORMATRIX],
531 GL_POST_COLOR_MATRIX_COLOR_TABLE);
532 TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
533 TEST_AND_UPDATE(ctx->Transform.DepthClamp, enable->DepthClamp,
534 GL_DEPTH_CLAMP);
535 TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
536 TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
537 TEST_AND_UPDATE(ctx->Pixel.Convolution1DEnabled, enable->Convolution1D,
538 GL_CONVOLUTION_1D);
539 TEST_AND_UPDATE(ctx->Pixel.Convolution2DEnabled, enable->Convolution2D,
540 GL_CONVOLUTION_2D);
541 TEST_AND_UPDATE(ctx->Pixel.Separable2DEnabled, enable->Separable2D,
542 GL_SEPARABLE_2D);
543 TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
544 TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
545 TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
546 TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple,
547 GL_LINE_STIPPLE);
548 TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp,
549 GL_INDEX_LOGIC_OP);
550 TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp,
551 GL_COLOR_LOGIC_OP);
552
553 TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
554 TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
555 TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
556 TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1,
557 GL_MAP1_TEXTURE_COORD_1);
558 TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2,
559 GL_MAP1_TEXTURE_COORD_2);
560 TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3,
561 GL_MAP1_TEXTURE_COORD_3);
562 TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4,
563 GL_MAP1_TEXTURE_COORD_4);
564 TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3,
565 GL_MAP1_VERTEX_3);
566 TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4,
567 GL_MAP1_VERTEX_4);
568 for (i = 0; i < 16; i++) {
569 TEST_AND_UPDATE(ctx->Eval.Map1Attrib[i], enable->Map1Attrib[i],
570 GL_MAP1_VERTEX_ATTRIB0_4_NV + i);
571 }
572
573 TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
574 TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
575 TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
576 TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1,
577 GL_MAP2_TEXTURE_COORD_1);
578 TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2,
579 GL_MAP2_TEXTURE_COORD_2);
580 TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3,
581 GL_MAP2_TEXTURE_COORD_3);
582 TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4,
583 GL_MAP2_TEXTURE_COORD_4);
584 TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3,
585 GL_MAP2_VERTEX_3);
586 TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4,
587 GL_MAP2_VERTEX_4);
588 for (i = 0; i < 16; i++) {
589 TEST_AND_UPDATE(ctx->Eval.Map2Attrib[i], enable->Map2Attrib[i],
590 GL_MAP2_VERTEX_ATTRIB0_4_NV + i);
591 }
592
593 TEST_AND_UPDATE(ctx->Eval.AutoNormal, enable->AutoNormal, GL_AUTO_NORMAL);
594 TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
595 TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals,
596 GL_RESCALE_NORMAL_EXT);
597 TEST_AND_UPDATE(ctx->Transform.RasterPositionUnclipped,
598 enable->RasterPositionUnclipped,
599 GL_RASTER_POSITION_UNCLIPPED_IBM);
600 TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth,
601 GL_POINT_SMOOTH);
602 if (ctx->Extensions.NV_point_sprite || ctx->Extensions.ARB_point_sprite) {
603 TEST_AND_UPDATE(ctx->Point.PointSprite, enable->PointSprite,
604 GL_POINT_SPRITE_NV);
605 }
606 TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint,
607 GL_POLYGON_OFFSET_POINT);
608 TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine,
609 GL_POLYGON_OFFSET_LINE);
610 TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill,
611 GL_POLYGON_OFFSET_FILL);
612 TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth,
613 GL_POLYGON_SMOOTH);
614 TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple,
615 GL_POLYGON_STIPPLE);
616 TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
617 TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
618 if (ctx->Extensions.EXT_stencil_two_side) {
619 TEST_AND_UPDATE(ctx->Stencil.TestTwoSide, enable->StencilTwoSide, GL_STENCIL_TEST_TWO_SIDE_EXT);
620 }
621 TEST_AND_UPDATE(ctx->Multisample.Enabled, enable->MultisampleEnabled,
622 GL_MULTISAMPLE_ARB);
623 TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToCoverage,
624 enable->SampleAlphaToCoverage,
625 GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
626 TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToOne,
627 enable->SampleAlphaToOne,
628 GL_SAMPLE_ALPHA_TO_ONE_ARB);
629 TEST_AND_UPDATE(ctx->Multisample.SampleCoverage,
630 enable->SampleCoverage,
631 GL_SAMPLE_COVERAGE_ARB);
632 TEST_AND_UPDATE(ctx->Multisample.SampleCoverageInvert,
633 enable->SampleCoverageInvert,
634 GL_SAMPLE_COVERAGE_INVERT_ARB);
635 /* GL_ARB_vertex_program, GL_NV_vertex_program */
636 TEST_AND_UPDATE(ctx->VertexProgram.Enabled,
637 enable->VertexProgram,
638 GL_VERTEX_PROGRAM_ARB);
639 TEST_AND_UPDATE(ctx->VertexProgram.PointSizeEnabled,
640 enable->VertexProgramPointSize,
641 GL_VERTEX_PROGRAM_POINT_SIZE_ARB);
642 TEST_AND_UPDATE(ctx->VertexProgram.TwoSideEnabled,
643 enable->VertexProgramTwoSide,
644 GL_VERTEX_PROGRAM_TWO_SIDE_ARB);
645
646 #undef TEST_AND_UPDATE
647
648 /* texture unit enables */
649 for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
650 const GLbitfield enabled = enable->Texture[i];
651 const GLbitfield genEnabled = enable->TexGen[i];
652
653 if (ctx->Texture.Unit[i].Enabled != enabled) {
654 _mesa_ActiveTextureARB(GL_TEXTURE0 + i);
655
656 _mesa_set_enable(ctx, GL_TEXTURE_1D,
657 (enabled & TEXTURE_1D_BIT) ? GL_TRUE : GL_FALSE);
658 _mesa_set_enable(ctx, GL_TEXTURE_2D,
659 (enabled & TEXTURE_2D_BIT) ? GL_TRUE : GL_FALSE);
660 _mesa_set_enable(ctx, GL_TEXTURE_3D,
661 (enabled & TEXTURE_3D_BIT) ? GL_TRUE : GL_FALSE);
662 if (ctx->Extensions.NV_texture_rectangle) {
663 _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_ARB,
664 (enabled & TEXTURE_RECT_BIT) ? GL_TRUE : GL_FALSE);
665 }
666 if (ctx->Extensions.ARB_texture_cube_map) {
667 _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP,
668 (enabled & TEXTURE_CUBE_BIT) ? GL_TRUE : GL_FALSE);
669 }
670 if (ctx->Extensions.MESA_texture_array) {
671 _mesa_set_enable(ctx, GL_TEXTURE_1D_ARRAY_EXT,
672 (enabled & TEXTURE_1D_ARRAY_BIT) ? GL_TRUE : GL_FALSE);
673 _mesa_set_enable(ctx, GL_TEXTURE_2D_ARRAY_EXT,
674 (enabled & TEXTURE_2D_ARRAY_BIT) ? GL_TRUE : GL_FALSE);
675 }
676 }
677
678 if (ctx->Texture.Unit[i].TexGenEnabled != genEnabled) {
679 _mesa_ActiveTextureARB(GL_TEXTURE0 + i);
680 _mesa_set_enable(ctx, GL_TEXTURE_GEN_S,
681 (genEnabled & S_BIT) ? GL_TRUE : GL_FALSE);
682 _mesa_set_enable(ctx, GL_TEXTURE_GEN_T,
683 (genEnabled & T_BIT) ? GL_TRUE : GL_FALSE);
684 _mesa_set_enable(ctx, GL_TEXTURE_GEN_R,
685 (genEnabled & R_BIT) ? GL_TRUE : GL_FALSE);
686 _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q,
687 (genEnabled & Q_BIT) ? GL_TRUE : GL_FALSE);
688 }
689
690 /* GL_SGI_texture_color_table */
691 ctx->Texture.Unit[i].ColorTableEnabled = enable->TextureColorTable[i];
692 }
693
694 _mesa_ActiveTextureARB(GL_TEXTURE0 + curTexUnitSave);
695 }
696
697
698 /**
699 * Pop/restore texture attribute/group state.
700 */
701 static void
702 pop_texture_group(GLcontext *ctx, struct texture_state *texstate)
703 {
704 GLuint u;
705
706 _mesa_lock_context_textures(ctx);
707
708 for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
709 const struct gl_texture_unit *unit = &texstate->Texture.Unit[u];
710 GLuint tgt;
711
712 _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + u);
713 _mesa_set_enable(ctx, GL_TEXTURE_1D,
714 (unit->Enabled & TEXTURE_1D_BIT) ? GL_TRUE : GL_FALSE);
715 _mesa_set_enable(ctx, GL_TEXTURE_2D,
716 (unit->Enabled & TEXTURE_2D_BIT) ? GL_TRUE : GL_FALSE);
717 _mesa_set_enable(ctx, GL_TEXTURE_3D,
718 (unit->Enabled & TEXTURE_3D_BIT) ? GL_TRUE : GL_FALSE);
719 if (ctx->Extensions.ARB_texture_cube_map) {
720 _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP_ARB,
721 (unit->Enabled & TEXTURE_CUBE_BIT) ? GL_TRUE : GL_FALSE);
722 }
723 if (ctx->Extensions.NV_texture_rectangle) {
724 _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_NV,
725 (unit->Enabled & TEXTURE_RECT_BIT) ? GL_TRUE : GL_FALSE);
726 }
727 if (ctx->Extensions.MESA_texture_array) {
728 _mesa_set_enable(ctx, GL_TEXTURE_1D_ARRAY_EXT,
729 (unit->Enabled & TEXTURE_1D_ARRAY_BIT) ? GL_TRUE : GL_FALSE);
730 _mesa_set_enable(ctx, GL_TEXTURE_2D_ARRAY_EXT,
731 (unit->Enabled & TEXTURE_2D_ARRAY_BIT) ? GL_TRUE : GL_FALSE);
732 }
733
734 if (ctx->Extensions.SGI_texture_color_table) {
735 _mesa_set_enable(ctx, GL_TEXTURE_COLOR_TABLE_SGI,
736 unit->ColorTableEnabled);
737 }
738 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->EnvMode);
739 _mesa_TexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, unit->EnvColor);
740 _mesa_TexGeni(GL_S, GL_TEXTURE_GEN_MODE, unit->GenS.Mode);
741 _mesa_TexGeni(GL_T, GL_TEXTURE_GEN_MODE, unit->GenT.Mode);
742 _mesa_TexGeni(GL_R, GL_TEXTURE_GEN_MODE, unit->GenR.Mode);
743 _mesa_TexGeni(GL_Q, GL_TEXTURE_GEN_MODE, unit->GenQ.Mode);
744 _mesa_TexGenfv(GL_S, GL_OBJECT_PLANE, unit->GenS.ObjectPlane);
745 _mesa_TexGenfv(GL_T, GL_OBJECT_PLANE, unit->GenT.ObjectPlane);
746 _mesa_TexGenfv(GL_R, GL_OBJECT_PLANE, unit->GenR.ObjectPlane);
747 _mesa_TexGenfv(GL_Q, GL_OBJECT_PLANE, unit->GenQ.ObjectPlane);
748 /* Eye plane done differently to avoid re-transformation */
749 {
750 struct gl_texture_unit *destUnit = &ctx->Texture.Unit[u];
751 COPY_4FV(destUnit->GenS.EyePlane, unit->GenS.EyePlane);
752 COPY_4FV(destUnit->GenT.EyePlane, unit->GenT.EyePlane);
753 COPY_4FV(destUnit->GenR.EyePlane, unit->GenR.EyePlane);
754 COPY_4FV(destUnit->GenQ.EyePlane, unit->GenQ.EyePlane);
755 if (ctx->Driver.TexGen) {
756 ctx->Driver.TexGen(ctx, GL_S, GL_EYE_PLANE, unit->GenS.EyePlane);
757 ctx->Driver.TexGen(ctx, GL_T, GL_EYE_PLANE, unit->GenT.EyePlane);
758 ctx->Driver.TexGen(ctx, GL_R, GL_EYE_PLANE, unit->GenR.EyePlane);
759 ctx->Driver.TexGen(ctx, GL_Q, GL_EYE_PLANE, unit->GenQ.EyePlane);
760 }
761 }
762 _mesa_set_enable(ctx, GL_TEXTURE_GEN_S,
763 ((unit->TexGenEnabled & S_BIT) ? GL_TRUE : GL_FALSE));
764 _mesa_set_enable(ctx, GL_TEXTURE_GEN_T,
765 ((unit->TexGenEnabled & T_BIT) ? GL_TRUE : GL_FALSE));
766 _mesa_set_enable(ctx, GL_TEXTURE_GEN_R,
767 ((unit->TexGenEnabled & R_BIT) ? GL_TRUE : GL_FALSE));
768 _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q,
769 ((unit->TexGenEnabled & Q_BIT) ? GL_TRUE : GL_FALSE));
770 if (ctx->Extensions.EXT_texture_lod_bias) {
771 _mesa_TexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
772 GL_TEXTURE_LOD_BIAS_EXT, unit->LodBias);
773 }
774 if (ctx->Extensions.EXT_texture_env_combine ||
775 ctx->Extensions.ARB_texture_env_combine) {
776 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB,
777 unit->Combine.ModeRGB);
778 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA,
779 unit->Combine.ModeA);
780 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB,
781 unit->Combine.SourceRGB[0]);
782 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB,
783 unit->Combine.SourceRGB[1]);
784 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB,
785 unit->Combine.SourceRGB[2]);
786 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA,
787 unit->Combine.SourceA[0]);
788 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA,
789 unit->Combine.SourceA[1]);
790 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA,
791 unit->Combine.SourceA[2]);
792 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB,
793 unit->Combine.OperandRGB[0]);
794 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB,
795 unit->Combine.OperandRGB[1]);
796 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB,
797 unit->Combine.OperandRGB[2]);
798 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA,
799 unit->Combine.OperandA[0]);
800 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA,
801 unit->Combine.OperandA[1]);
802 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA,
803 unit->Combine.OperandA[2]);
804 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE,
805 1 << unit->Combine.ScaleShiftRGB);
806 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE,
807 1 << unit->Combine.ScaleShiftA);
808 }
809
810 /* Restore texture object state for each target */
811 for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
812 const struct gl_texture_object *obj = NULL;
813 GLenum target;
814
815 obj = &texstate->SavedObj[u][tgt];
816
817 /* don't restore state for unsupported targets to prevent
818 * raising GL errors.
819 */
820 if (obj->Target == GL_TEXTURE_CUBE_MAP_ARB &&
821 !ctx->Extensions.ARB_texture_cube_map) {
822 continue;
823 }
824 else if (obj->Target == GL_TEXTURE_RECTANGLE_NV &&
825 !ctx->Extensions.NV_texture_rectangle) {
826 continue;
827 }
828 else if ((obj->Target == GL_TEXTURE_1D_ARRAY_EXT ||
829 obj->Target == GL_TEXTURE_2D_ARRAY_EXT) &&
830 !ctx->Extensions.MESA_texture_array) {
831 continue;
832 }
833
834 target = obj->Target;
835
836 _mesa_BindTexture(target, obj->Name);
837
838 _mesa_TexParameterfv(target, GL_TEXTURE_BORDER_COLOR, obj->BorderColor);
839 _mesa_TexParameterf(target, GL_TEXTURE_PRIORITY, obj->Priority);
840 _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, obj->WrapS);
841 _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, obj->WrapT);
842 _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, obj->WrapR);
843 _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, obj->MinFilter);
844 _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, obj->MagFilter);
845 _mesa_TexParameterf(target, GL_TEXTURE_MIN_LOD, obj->MinLod);
846 _mesa_TexParameterf(target, GL_TEXTURE_MAX_LOD, obj->MaxLod);
847 _mesa_TexParameterf(target, GL_TEXTURE_LOD_BIAS, obj->LodBias);
848 _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, obj->BaseLevel);
849 if (target != GL_TEXTURE_RECTANGLE_ARB)
850 _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, obj->MaxLevel);
851 if (ctx->Extensions.EXT_texture_filter_anisotropic) {
852 _mesa_TexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT,
853 obj->MaxAnisotropy);
854 }
855 if (ctx->Extensions.ARB_shadow_ambient) {
856 _mesa_TexParameterf(target, GL_TEXTURE_COMPARE_FAIL_VALUE_ARB,
857 obj->CompareFailValue);
858 }
859 }
860
861 /* remove saved references to the texture objects */
862 for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
863 _mesa_reference_texobj(&texstate->SavedTexRef[u][tgt], NULL);
864 }
865 }
866
867 _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + texstate->Texture.CurrentUnit);
868
869 _mesa_unlock_context_textures(ctx);
870 }
871
872
873 /*
874 * This function is kind of long just because we have to call a lot
875 * of device driver functions to update device driver state.
876 *
877 * XXX As it is now, most of the pop-code calls immediate-mode Mesa functions
878 * in order to restore GL state. This isn't terribly efficient but it
879 * ensures that dirty flags and any derived state gets updated correctly.
880 * We could at least check if the value to restore equals the current value
881 * and then skip the Mesa call.
882 */
883 void GLAPIENTRY
884 _mesa_PopAttrib(void)
885 {
886 struct gl_attrib_node *attr, *next;
887 GET_CURRENT_CONTEXT(ctx);
888 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
889
890 if (ctx->AttribStackDepth == 0) {
891 _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
892 return;
893 }
894
895 ctx->AttribStackDepth--;
896 attr = ctx->AttribStack[ctx->AttribStackDepth];
897
898 while (attr) {
899
900 if (MESA_VERBOSE & VERBOSE_API) {
901 _mesa_debug(ctx, "glPopAttrib %s\n",
902 _mesa_lookup_enum_by_nr(attr->kind));
903 }
904
905 switch (attr->kind) {
906 case GL_ACCUM_BUFFER_BIT:
907 {
908 const struct gl_accum_attrib *accum;
909 accum = (const struct gl_accum_attrib *) attr->data;
910 _mesa_ClearAccum(accum->ClearColor[0],
911 accum->ClearColor[1],
912 accum->ClearColor[2],
913 accum->ClearColor[3]);
914 }
915 break;
916 case GL_COLOR_BUFFER_BIT:
917 {
918 const struct gl_colorbuffer_attrib *color;
919
920 color = (const struct gl_colorbuffer_attrib *) attr->data;
921 _mesa_ClearIndex((GLfloat) color->ClearIndex);
922 _mesa_ClearColor(color->ClearColor[0],
923 color->ClearColor[1],
924 color->ClearColor[2],
925 color->ClearColor[3]);
926 _mesa_IndexMask(color->IndexMask);
927 if (!ctx->Extensions.EXT_draw_buffers2) {
928 _mesa_ColorMask((GLboolean) (color->ColorMask[0][0] != 0),
929 (GLboolean) (color->ColorMask[0][1] != 0),
930 (GLboolean) (color->ColorMask[0][2] != 0),
931 (GLboolean) (color->ColorMask[0][3] != 0));
932 }
933 else {
934 GLuint i;
935 for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
936 _mesa_ColorMaskIndexed(i,
937 (GLboolean) (color->ColorMask[i][0] != 0),
938 (GLboolean) (color->ColorMask[i][1] != 0),
939 (GLboolean) (color->ColorMask[i][2] != 0),
940 (GLboolean) (color->ColorMask[i][3] != 0));
941 }
942 }
943 {
944 /* Need to determine if more than one color output is
945 * specified. If so, call glDrawBuffersARB, else call
946 * glDrawBuffer(). This is a subtle, but essential point
947 * since GL_FRONT (for example) is illegal for the former
948 * function, but legal for the later.
949 */
950 GLboolean multipleBuffers = GL_FALSE;
951 GLuint i;
952
953 for (i = 1; i < ctx->Const.MaxDrawBuffers; i++) {
954 if (color->DrawBuffer[i] != GL_NONE) {
955 multipleBuffers = GL_TRUE;
956 break;
957 }
958 }
959 /* Call the API_level functions, not _mesa_drawbuffers()
960 * since we need to do error checking on the pop'd
961 * GL_DRAW_BUFFER.
962 * Ex: if GL_FRONT were pushed, but we're popping with a
963 * user FBO bound, GL_FRONT will be illegal and we'll need
964 * to record that error. Per OpenGL ARB decision.
965 */
966 if (multipleBuffers)
967 _mesa_DrawBuffersARB(ctx->Const.MaxDrawBuffers,
968 color->DrawBuffer);
969 else
970 _mesa_DrawBuffer(color->DrawBuffer[0]);
971 }
972 _mesa_set_enable(ctx, GL_ALPHA_TEST, color->AlphaEnabled);
973 _mesa_AlphaFunc(color->AlphaFunc, color->AlphaRef);
974 if (ctx->Color.BlendEnabled != color->BlendEnabled) {
975 if (ctx->Extensions.EXT_draw_buffers2) {
976 GLuint i;
977 for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
978 _mesa_set_enablei(ctx, GL_BLEND, i,
979 (color->BlendEnabled >> i) & 1);
980 }
981 }
982 else {
983 _mesa_set_enable(ctx, GL_BLEND, (color->BlendEnabled & 1));
984 }
985 }
986 _mesa_BlendFuncSeparateEXT(color->BlendSrcRGB,
987 color->BlendDstRGB,
988 color->BlendSrcA,
989 color->BlendDstA);
990 /* This special case is because glBlendEquationSeparateEXT
991 * cannot take GL_LOGIC_OP as a parameter.
992 */
993 if ( color->BlendEquationRGB == color->BlendEquationA ) {
994 _mesa_BlendEquation(color->BlendEquationRGB);
995 }
996 else {
997 _mesa_BlendEquationSeparateEXT(color->BlendEquationRGB,
998 color->BlendEquationA);
999 }
1000 _mesa_BlendColor(color->BlendColor[0],
1001 color->BlendColor[1],
1002 color->BlendColor[2],
1003 color->BlendColor[3]);
1004 _mesa_LogicOp(color->LogicOp);
1005 _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP,
1006 color->ColorLogicOpEnabled);
1007 _mesa_set_enable(ctx, GL_INDEX_LOGIC_OP,
1008 color->IndexLogicOpEnabled);
1009 _mesa_set_enable(ctx, GL_DITHER, color->DitherFlag);
1010 }
1011 break;
1012 case GL_CURRENT_BIT:
1013 FLUSH_CURRENT( ctx, 0 );
1014 MEMCPY( &ctx->Current, attr->data,
1015 sizeof(struct gl_current_attrib) );
1016 break;
1017 case GL_DEPTH_BUFFER_BIT:
1018 {
1019 const struct gl_depthbuffer_attrib *depth;
1020 depth = (const struct gl_depthbuffer_attrib *) attr->data;
1021 _mesa_DepthFunc(depth->Func);
1022 _mesa_ClearDepth(depth->Clear);
1023 _mesa_set_enable(ctx, GL_DEPTH_TEST, depth->Test);
1024 _mesa_DepthMask(depth->Mask);
1025 }
1026 break;
1027 case GL_ENABLE_BIT:
1028 {
1029 const struct gl_enable_attrib *enable;
1030 enable = (const struct gl_enable_attrib *) attr->data;
1031 pop_enable_group(ctx, enable);
1032 ctx->NewState |= _NEW_ALL;
1033 }
1034 break;
1035 case GL_EVAL_BIT:
1036 MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
1037 ctx->NewState |= _NEW_EVAL;
1038 break;
1039 case GL_FOG_BIT:
1040 {
1041 const struct gl_fog_attrib *fog;
1042 fog = (const struct gl_fog_attrib *) attr->data;
1043 _mesa_set_enable(ctx, GL_FOG, fog->Enabled);
1044 _mesa_Fogfv(GL_FOG_COLOR, fog->Color);
1045 _mesa_Fogf(GL_FOG_DENSITY, fog->Density);
1046 _mesa_Fogf(GL_FOG_START, fog->Start);
1047 _mesa_Fogf(GL_FOG_END, fog->End);
1048 _mesa_Fogf(GL_FOG_INDEX, fog->Index);
1049 _mesa_Fogi(GL_FOG_MODE, fog->Mode);
1050 }
1051 break;
1052 case GL_HINT_BIT:
1053 {
1054 const struct gl_hint_attrib *hint;
1055 hint = (const struct gl_hint_attrib *) attr->data;
1056 _mesa_Hint(GL_PERSPECTIVE_CORRECTION_HINT,
1057 hint->PerspectiveCorrection );
1058 _mesa_Hint(GL_POINT_SMOOTH_HINT, hint->PointSmooth);
1059 _mesa_Hint(GL_LINE_SMOOTH_HINT, hint->LineSmooth);
1060 _mesa_Hint(GL_POLYGON_SMOOTH_HINT, hint->PolygonSmooth);
1061 _mesa_Hint(GL_FOG_HINT, hint->Fog);
1062 _mesa_Hint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT,
1063 hint->ClipVolumeClipping);
1064 _mesa_Hint(GL_TEXTURE_COMPRESSION_HINT_ARB,
1065 hint->TextureCompression);
1066 }
1067 break;
1068 case GL_LIGHTING_BIT:
1069 {
1070 GLuint i;
1071 const struct gl_light_attrib *light;
1072 light = (const struct gl_light_attrib *) attr->data;
1073 /* lighting enable */
1074 _mesa_set_enable(ctx, GL_LIGHTING, light->Enabled);
1075 /* per-light state */
1076 if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top))
1077 _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
1078
1079 for (i = 0; i < ctx->Const.MaxLights; i++) {
1080 const struct gl_light *l = &light->Light[i];
1081 _mesa_set_enable(ctx, GL_LIGHT0 + i, l->Enabled);
1082 _mesa_light(ctx, i, GL_AMBIENT, l->Ambient);
1083 _mesa_light(ctx, i, GL_DIFFUSE, l->Diffuse);
1084 _mesa_light(ctx, i, GL_SPECULAR, l->Specular );
1085 _mesa_light(ctx, i, GL_POSITION, l->EyePosition);
1086 _mesa_light(ctx, i, GL_SPOT_DIRECTION, l->SpotDirection);
1087 {
1088 GLfloat p[4] = { 0 };
1089 p[0] = l->SpotExponent;
1090 _mesa_light(ctx, i, GL_SPOT_EXPONENT, p);
1091 }
1092 {
1093 GLfloat p[4] = { 0 };
1094 p[0] = l->SpotCutoff;
1095 _mesa_light(ctx, i, GL_SPOT_CUTOFF, p);
1096 }
1097 {
1098 GLfloat p[4] = { 0 };
1099 p[0] = l->ConstantAttenuation;
1100 _mesa_light(ctx, i, GL_CONSTANT_ATTENUATION, p);
1101 }
1102 {
1103 GLfloat p[4] = { 0 };
1104 p[0] = l->LinearAttenuation;
1105 _mesa_light(ctx, i, GL_LINEAR_ATTENUATION, p);
1106 }
1107 {
1108 GLfloat p[4] = { 0 };
1109 p[0] = l->QuadraticAttenuation;
1110 _mesa_light(ctx, i, GL_QUADRATIC_ATTENUATION, p);
1111 }
1112 }
1113 /* light model */
1114 _mesa_LightModelfv(GL_LIGHT_MODEL_AMBIENT,
1115 light->Model.Ambient);
1116 _mesa_LightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER,
1117 (GLfloat) light->Model.LocalViewer);
1118 _mesa_LightModelf(GL_LIGHT_MODEL_TWO_SIDE,
1119 (GLfloat) light->Model.TwoSide);
1120 _mesa_LightModelf(GL_LIGHT_MODEL_COLOR_CONTROL,
1121 (GLfloat) light->Model.ColorControl);
1122 /* shade model */
1123 _mesa_ShadeModel(light->ShadeModel);
1124 /* color material */
1125 _mesa_ColorMaterial(light->ColorMaterialFace,
1126 light->ColorMaterialMode);
1127 _mesa_set_enable(ctx, GL_COLOR_MATERIAL,
1128 light->ColorMaterialEnabled);
1129 /* materials */
1130 MEMCPY(&ctx->Light.Material, &light->Material,
1131 sizeof(struct gl_material));
1132 }
1133 break;
1134 case GL_LINE_BIT:
1135 {
1136 const struct gl_line_attrib *line;
1137 line = (const struct gl_line_attrib *) attr->data;
1138 _mesa_set_enable(ctx, GL_LINE_SMOOTH, line->SmoothFlag);
1139 _mesa_set_enable(ctx, GL_LINE_STIPPLE, line->StippleFlag);
1140 _mesa_LineStipple(line->StippleFactor, line->StipplePattern);
1141 _mesa_LineWidth(line->Width);
1142 }
1143 break;
1144 case GL_LIST_BIT:
1145 MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
1146 break;
1147 case GL_PIXEL_MODE_BIT:
1148 MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
1149 /* XXX what other pixel state needs to be set by function calls? */
1150 _mesa_ReadBuffer(ctx->Pixel.ReadBuffer);
1151 ctx->NewState |= _NEW_PIXEL;
1152 break;
1153 case GL_POINT_BIT:
1154 {
1155 const struct gl_point_attrib *point;
1156 point = (const struct gl_point_attrib *) attr->data;
1157 _mesa_PointSize(point->Size);
1158 _mesa_set_enable(ctx, GL_POINT_SMOOTH, point->SmoothFlag);
1159 if (ctx->Extensions.EXT_point_parameters) {
1160 _mesa_PointParameterfv(GL_DISTANCE_ATTENUATION_EXT,
1161 point->Params);
1162 _mesa_PointParameterf(GL_POINT_SIZE_MIN_EXT,
1163 point->MinSize);
1164 _mesa_PointParameterf(GL_POINT_SIZE_MAX_EXT,
1165 point->MaxSize);
1166 _mesa_PointParameterf(GL_POINT_FADE_THRESHOLD_SIZE_EXT,
1167 point->Threshold);
1168 }
1169 if (ctx->Extensions.NV_point_sprite
1170 || ctx->Extensions.ARB_point_sprite) {
1171 GLuint u;
1172 for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
1173 _mesa_TexEnvi(GL_POINT_SPRITE_NV, GL_COORD_REPLACE_NV,
1174 (GLint) point->CoordReplace[u]);
1175 }
1176 _mesa_set_enable(ctx, GL_POINT_SPRITE_NV,point->PointSprite);
1177 if (ctx->Extensions.NV_point_sprite)
1178 _mesa_PointParameteri(GL_POINT_SPRITE_R_MODE_NV,
1179 ctx->Point.SpriteRMode);
1180 _mesa_PointParameterf(GL_POINT_SPRITE_COORD_ORIGIN,
1181 (GLfloat)ctx->Point.SpriteOrigin);
1182 }
1183 }
1184 break;
1185 case GL_POLYGON_BIT:
1186 {
1187 const struct gl_polygon_attrib *polygon;
1188 polygon = (const struct gl_polygon_attrib *) attr->data;
1189 _mesa_CullFace(polygon->CullFaceMode);
1190 _mesa_FrontFace(polygon->FrontFace);
1191 _mesa_PolygonMode(GL_FRONT, polygon->FrontMode);
1192 _mesa_PolygonMode(GL_BACK, polygon->BackMode);
1193 _mesa_PolygonOffset(polygon->OffsetFactor,
1194 polygon->OffsetUnits);
1195 _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, polygon->SmoothFlag);
1196 _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, polygon->StippleFlag);
1197 _mesa_set_enable(ctx, GL_CULL_FACE, polygon->CullFlag);
1198 _mesa_set_enable(ctx, GL_POLYGON_OFFSET_POINT,
1199 polygon->OffsetPoint);
1200 _mesa_set_enable(ctx, GL_POLYGON_OFFSET_LINE,
1201 polygon->OffsetLine);
1202 _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL,
1203 polygon->OffsetFill);
1204 }
1205 break;
1206 case GL_POLYGON_STIPPLE_BIT:
1207 MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
1208 ctx->NewState |= _NEW_POLYGONSTIPPLE;
1209 if (ctx->Driver.PolygonStipple)
1210 ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data );
1211 break;
1212 case GL_SCISSOR_BIT:
1213 {
1214 const struct gl_scissor_attrib *scissor;
1215 scissor = (const struct gl_scissor_attrib *) attr->data;
1216 _mesa_Scissor(scissor->X, scissor->Y,
1217 scissor->Width, scissor->Height);
1218 _mesa_set_enable(ctx, GL_SCISSOR_TEST, scissor->Enabled);
1219 }
1220 break;
1221 case GL_STENCIL_BUFFER_BIT:
1222 {
1223 const struct gl_stencil_attrib *stencil;
1224 stencil = (const struct gl_stencil_attrib *) attr->data;
1225 _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);
1226 _mesa_ClearStencil(stencil->Clear);
1227 if (ctx->Extensions.EXT_stencil_two_side) {
1228 _mesa_set_enable(ctx, GL_STENCIL_TEST_TWO_SIDE_EXT,
1229 stencil->TestTwoSide);
1230 _mesa_ActiveStencilFaceEXT(stencil->ActiveFace
1231 ? GL_BACK : GL_FRONT);
1232 }
1233 /* front state */
1234 _mesa_StencilFuncSeparate(GL_FRONT,
1235 stencil->Function[0],
1236 stencil->Ref[0],
1237 stencil->ValueMask[0]);
1238 _mesa_StencilMaskSeparate(GL_FRONT, stencil->WriteMask[0]);
1239 _mesa_StencilOpSeparate(GL_FRONT, stencil->FailFunc[0],
1240 stencil->ZFailFunc[0],
1241 stencil->ZPassFunc[0]);
1242 /* back state */
1243 _mesa_StencilFuncSeparate(GL_BACK,
1244 stencil->Function[1],
1245 stencil->Ref[1],
1246 stencil->ValueMask[1]);
1247 _mesa_StencilMaskSeparate(GL_BACK, stencil->WriteMask[1]);
1248 _mesa_StencilOpSeparate(GL_BACK, stencil->FailFunc[1],
1249 stencil->ZFailFunc[1],
1250 stencil->ZPassFunc[1]);
1251 }
1252 break;
1253 case GL_TRANSFORM_BIT:
1254 {
1255 GLuint i;
1256 const struct gl_transform_attrib *xform;
1257 xform = (const struct gl_transform_attrib *) attr->data;
1258 _mesa_MatrixMode(xform->MatrixMode);
1259 if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top))
1260 _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
1261
1262 /* restore clip planes */
1263 for (i = 0; i < MAX_CLIP_PLANES; i++) {
1264 const GLuint mask = 1 << i;
1265 const GLfloat *eyePlane = xform->EyeUserPlane[i];
1266 COPY_4V(ctx->Transform.EyeUserPlane[i], eyePlane);
1267 if (xform->ClipPlanesEnabled & mask) {
1268 _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE);
1269 }
1270 else {
1271 _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_FALSE);
1272 }
1273 if (ctx->Driver.ClipPlane)
1274 ctx->Driver.ClipPlane( ctx, GL_CLIP_PLANE0 + i, eyePlane );
1275 }
1276
1277 /* normalize/rescale */
1278 if (xform->Normalize != ctx->Transform.Normalize)
1279 _mesa_set_enable(ctx, GL_NORMALIZE,ctx->Transform.Normalize);
1280 if (xform->RescaleNormals != ctx->Transform.RescaleNormals)
1281 _mesa_set_enable(ctx, GL_RESCALE_NORMAL_EXT,
1282 ctx->Transform.RescaleNormals);
1283 if (xform->DepthClamp != ctx->Transform.DepthClamp)
1284 _mesa_set_enable(ctx, GL_DEPTH_CLAMP,
1285 ctx->Transform.DepthClamp);
1286 }
1287 break;
1288 case GL_TEXTURE_BIT:
1289 /* Take care of texture object reference counters */
1290 {
1291 struct texture_state *texstate
1292 = (struct texture_state *) attr->data;
1293 pop_texture_group(ctx, texstate);
1294 ctx->NewState |= _NEW_TEXTURE;
1295 }
1296 break;
1297 case GL_VIEWPORT_BIT:
1298 {
1299 const struct gl_viewport_attrib *vp;
1300 vp = (const struct gl_viewport_attrib *) attr->data;
1301 _mesa_Viewport(vp->X, vp->Y, vp->Width, vp->Height);
1302 _mesa_DepthRange(vp->Near, vp->Far);
1303 }
1304 break;
1305 case GL_MULTISAMPLE_BIT_ARB:
1306 {
1307 const struct gl_multisample_attrib *ms;
1308 ms = (const struct gl_multisample_attrib *) attr->data;
1309 _mesa_SampleCoverageARB(ms->SampleCoverageValue,
1310 ms->SampleCoverageInvert);
1311 }
1312 break;
1313
1314 default:
1315 _mesa_problem( ctx, "Bad attrib flag in PopAttrib");
1316 break;
1317 }
1318
1319 next = attr->next;
1320 FREE( attr->data );
1321 FREE( attr );
1322 attr = next;
1323 }
1324 }
1325
1326
1327 /**
1328 * Helper for incrementing/decrementing vertex buffer object reference
1329 * counts when pushing/popping the GL_CLIENT_VERTEX_ARRAY_BIT attribute group.
1330 */
1331 static void
1332 adjust_buffer_object_ref_counts(struct gl_array_object *arrayObj, GLint step)
1333 {
1334 GLuint i;
1335
1336 arrayObj->Vertex.BufferObj->RefCount += step;
1337 arrayObj->Weight.BufferObj->RefCount += step;
1338 arrayObj->Normal.BufferObj->RefCount += step;
1339 arrayObj->Color.BufferObj->RefCount += step;
1340 arrayObj->SecondaryColor.BufferObj->RefCount += step;
1341 arrayObj->FogCoord.BufferObj->RefCount += step;
1342 arrayObj->Index.BufferObj->RefCount += step;
1343 arrayObj->EdgeFlag.BufferObj->RefCount += step;
1344 for (i = 0; i < Elements(arrayObj->TexCoord); i++)
1345 arrayObj->TexCoord[i].BufferObj->RefCount += step;
1346 for (i = 0; i < Elements(arrayObj->VertexAttrib); i++)
1347 arrayObj->VertexAttrib[i].BufferObj->RefCount += step;
1348 }
1349
1350
1351 /**
1352 * Copy gl_pixelstore_attrib from src to dst, updating buffer
1353 * object refcounts.
1354 */
1355 static void
1356 copy_pixelstore(GLcontext *ctx,
1357 struct gl_pixelstore_attrib *dst,
1358 const struct gl_pixelstore_attrib *src)
1359 {
1360 dst->Alignment = src->Alignment;
1361 dst->RowLength = src->RowLength;
1362 dst->SkipPixels = src->SkipPixels;
1363 dst->SkipRows = src->SkipRows;
1364 dst->ImageHeight = src->ImageHeight;
1365 dst->SkipImages = src->SkipImages;
1366 dst->SwapBytes = src->SwapBytes;
1367 dst->LsbFirst = src->LsbFirst;
1368 dst->ClientStorage = src->ClientStorage;
1369 dst->Invert = src->Invert;
1370 _mesa_reference_buffer_object(ctx, &dst->BufferObj, src->BufferObj);
1371 }
1372
1373
1374 #define GL_CLIENT_PACK_BIT (1<<20)
1375 #define GL_CLIENT_UNPACK_BIT (1<<21)
1376
1377
1378 void GLAPIENTRY
1379 _mesa_PushClientAttrib(GLbitfield mask)
1380 {
1381 struct gl_attrib_node *head;
1382
1383 GET_CURRENT_CONTEXT(ctx);
1384 ASSERT_OUTSIDE_BEGIN_END(ctx);
1385
1386 if (ctx->ClientAttribStackDepth >= MAX_CLIENT_ATTRIB_STACK_DEPTH) {
1387 _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
1388 return;
1389 }
1390
1391 /* Build linked list of attribute nodes which save all attribute
1392 * groups specified by the mask.
1393 */
1394 head = NULL;
1395
1396 if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
1397 struct gl_pixelstore_attrib *attr;
1398 /* packing attribs */
1399 attr = CALLOC_STRUCT( gl_pixelstore_attrib );
1400 copy_pixelstore(ctx, attr, &ctx->Pack);
1401 save_attrib_data(&head, GL_CLIENT_PACK_BIT, attr);
1402 /* unpacking attribs */
1403 attr = CALLOC_STRUCT( gl_pixelstore_attrib );
1404 copy_pixelstore(ctx, attr, &ctx->Unpack);
1405 save_attrib_data(&head, GL_CLIENT_UNPACK_BIT, attr);
1406 }
1407
1408 if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
1409 struct gl_array_attrib *attr;
1410 struct gl_array_object *obj;
1411
1412 attr = MALLOC_STRUCT( gl_array_attrib );
1413 obj = MALLOC_STRUCT( gl_array_object );
1414
1415 #if FEATURE_ARB_vertex_buffer_object
1416 /* increment ref counts since we're copying pointers to these objects */
1417 ctx->Array.ArrayBufferObj->RefCount++;
1418 ctx->Array.ElementArrayBufferObj->RefCount++;
1419 #endif
1420
1421 MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
1422 MEMCPY( obj, ctx->Array.ArrayObj, sizeof(struct gl_array_object) );
1423
1424 attr->ArrayObj = obj;
1425
1426 save_attrib_data(&head, GL_CLIENT_VERTEX_ARRAY_BIT, attr);
1427
1428 /* bump reference counts on buffer objects */
1429 adjust_buffer_object_ref_counts(ctx->Array.ArrayObj, 1);
1430 }
1431
1432 ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
1433 ctx->ClientAttribStackDepth++;
1434 }
1435
1436
1437
1438
1439 void GLAPIENTRY
1440 _mesa_PopClientAttrib(void)
1441 {
1442 struct gl_attrib_node *node, *next;
1443
1444 GET_CURRENT_CONTEXT(ctx);
1445 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1446
1447 if (ctx->ClientAttribStackDepth == 0) {
1448 _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
1449 return;
1450 }
1451
1452 ctx->ClientAttribStackDepth--;
1453 node = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
1454
1455 while (node) {
1456 switch (node->kind) {
1457 case GL_CLIENT_PACK_BIT:
1458 {
1459 struct gl_pixelstore_attrib *store =
1460 (struct gl_pixelstore_attrib *) node->data;
1461 copy_pixelstore(ctx, &ctx->Pack, store);
1462 _mesa_reference_buffer_object(ctx, &store->BufferObj, NULL);
1463 }
1464 ctx->NewState |= _NEW_PACKUNPACK;
1465 break;
1466 case GL_CLIENT_UNPACK_BIT:
1467 {
1468 struct gl_pixelstore_attrib *store =
1469 (struct gl_pixelstore_attrib *) node->data;
1470 copy_pixelstore(ctx, &ctx->Unpack, store);
1471 _mesa_reference_buffer_object(ctx, &store->BufferObj, NULL);
1472 }
1473 ctx->NewState |= _NEW_PACKUNPACK;
1474 break;
1475 case GL_CLIENT_VERTEX_ARRAY_BIT: {
1476 struct gl_array_attrib * data =
1477 (struct gl_array_attrib *) node->data;
1478
1479 adjust_buffer_object_ref_counts(ctx->Array.ArrayObj, -1);
1480
1481 ctx->Array.ActiveTexture = data->ActiveTexture;
1482 if (data->LockCount != 0)
1483 _mesa_LockArraysEXT(data->LockFirst, data->LockCount);
1484 else if (ctx->Array.LockCount)
1485 _mesa_UnlockArraysEXT();
1486
1487 _mesa_BindVertexArrayAPPLE( data->ArrayObj->Name );
1488
1489 #if FEATURE_ARB_vertex_buffer_object
1490 _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB,
1491 data->ArrayBufferObj->Name);
1492 _mesa_BindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB,
1493 data->ElementArrayBufferObj->Name);
1494 #endif
1495
1496 MEMCPY( ctx->Array.ArrayObj, data->ArrayObj,
1497 sizeof( struct gl_array_object ) );
1498
1499 FREE( data->ArrayObj );
1500
1501 /* FIXME: Should some bits in ctx->Array->NewState also be set
1502 * FIXME: here? It seems like it should be set to inclusive-or
1503 * FIXME: of the old ArrayObj->_Enabled and the new _Enabled.
1504 */
1505
1506 ctx->NewState |= _NEW_ARRAY;
1507 break;
1508 }
1509 default:
1510 _mesa_problem( ctx, "Bad attrib flag in PopClientAttrib");
1511 break;
1512 }
1513
1514 next = node->next;
1515 FREE( node->data );
1516 FREE( node );
1517 node = next;
1518 }
1519 }
1520
1521
1522 void
1523 _mesa_init_attrib_dispatch(struct _glapi_table *disp)
1524 {
1525 SET_PopAttrib(disp, _mesa_PopAttrib);
1526 SET_PushAttrib(disp, _mesa_PushAttrib);
1527 SET_PopClientAttrib(disp, _mesa_PopClientAttrib);
1528 SET_PushClientAttrib(disp, _mesa_PushClientAttrib);
1529 }
1530
1531
1532 #endif /* FEATURE_attrib_stack */
1533
1534
1535 /**
1536 * Free any attribute state data that might be attached to the context.
1537 */
1538 void
1539 _mesa_free_attrib_data(GLcontext *ctx)
1540 {
1541 while (ctx->AttribStackDepth > 0) {
1542 struct gl_attrib_node *attr, *next;
1543
1544 ctx->AttribStackDepth--;
1545 attr = ctx->AttribStack[ctx->AttribStackDepth];
1546
1547 while (attr) {
1548 if (attr->kind == GL_TEXTURE_BIT) {
1549 struct texture_state *texstate = (struct texture_state*)attr->data;
1550 GLuint u, tgt;
1551 /* clear references to the saved texture objects */
1552 for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
1553 for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
1554 _mesa_reference_texobj(&texstate->SavedTexRef[u][tgt], NULL);
1555 }
1556 }
1557 }
1558 else {
1559 /* any other chunks of state that requires special handling? */
1560 }
1561
1562 next = attr->next;
1563 _mesa_free(attr->data);
1564 _mesa_free(attr);
1565 attr = next;
1566 }
1567 }
1568 }
1569
1570
1571 void _mesa_init_attrib( GLcontext *ctx )
1572 {
1573 /* Renderer and client attribute stacks */
1574 ctx->AttribStackDepth = 0;
1575 ctx->ClientAttribStackDepth = 0;
1576 }