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[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 "context.h"
37 #include "depth.h"
38 #include "enable.h"
39 #include "enums.h"
40 #include "fog.h"
41 #include "hint.h"
42 #include "light.h"
43 #include "lines.h"
44 #include "macros.h"
45 #include "matrix.h"
46 #include "mfeatures.h"
47 #include "multisample.h"
48 #include "points.h"
49 #include "polygon.h"
50 #include "shared.h"
51 #include "scissor.h"
52 #include "stencil.h"
53 #include "texenv.h"
54 #include "texgen.h"
55 #include "texobj.h"
56 #include "texparam.h"
57 #include "texstate.h"
58 #include "varray.h"
59 #include "viewport.h"
60 #include "mtypes.h"
61 #include "main/dispatch.h"
62 #include "hash.h"
63 #include <stdbool.h>
64
65
66 /**
67 * glEnable()/glDisable() attribute group (GL_ENABLE_BIT).
68 */
69 struct gl_enable_attrib
70 {
71 GLboolean AlphaTest;
72 GLboolean AutoNormal;
73 GLboolean Blend;
74 GLbitfield ClipPlanes;
75 GLboolean ColorMaterial;
76 GLboolean CullFace;
77 GLboolean DepthClamp;
78 GLboolean DepthTest;
79 GLboolean Dither;
80 GLboolean Fog;
81 GLboolean Light[MAX_LIGHTS];
82 GLboolean Lighting;
83 GLboolean LineSmooth;
84 GLboolean LineStipple;
85 GLboolean IndexLogicOp;
86 GLboolean ColorLogicOp;
87
88 GLboolean Map1Color4;
89 GLboolean Map1Index;
90 GLboolean Map1Normal;
91 GLboolean Map1TextureCoord1;
92 GLboolean Map1TextureCoord2;
93 GLboolean Map1TextureCoord3;
94 GLboolean Map1TextureCoord4;
95 GLboolean Map1Vertex3;
96 GLboolean Map1Vertex4;
97 GLboolean Map2Color4;
98 GLboolean Map2Index;
99 GLboolean Map2Normal;
100 GLboolean Map2TextureCoord1;
101 GLboolean Map2TextureCoord2;
102 GLboolean Map2TextureCoord3;
103 GLboolean Map2TextureCoord4;
104 GLboolean Map2Vertex3;
105 GLboolean Map2Vertex4;
106
107 GLboolean Normalize;
108 GLboolean PixelTexture;
109 GLboolean PointSmooth;
110 GLboolean PolygonOffsetPoint;
111 GLboolean PolygonOffsetLine;
112 GLboolean PolygonOffsetFill;
113 GLboolean PolygonSmooth;
114 GLboolean PolygonStipple;
115 GLboolean RescaleNormals;
116 GLboolean Scissor;
117 GLboolean Stencil;
118 GLboolean StencilTwoSide; /* GL_EXT_stencil_two_side */
119 GLboolean MultisampleEnabled; /* GL_ARB_multisample */
120 GLboolean SampleAlphaToCoverage; /* GL_ARB_multisample */
121 GLboolean SampleAlphaToOne; /* GL_ARB_multisample */
122 GLboolean SampleCoverage; /* GL_ARB_multisample */
123 GLboolean RasterPositionUnclipped; /* GL_IBM_rasterpos_clip */
124
125 GLbitfield Texture[MAX_TEXTURE_UNITS];
126 GLbitfield TexGen[MAX_TEXTURE_UNITS];
127
128 /* GL_ARB_vertex_program / GL_NV_vertex_program */
129 GLboolean VertexProgram;
130 GLboolean VertexProgramPointSize;
131 GLboolean VertexProgramTwoSide;
132
133 /* GL_ARB_point_sprite / GL_NV_point_sprite */
134 GLboolean PointSprite;
135 GLboolean FragmentShaderATI;
136
137 /* GL_ARB_framebuffer_sRGB / GL_EXT_framebuffer_sRGB */
138 GLboolean sRGBEnabled;
139 };
140
141
142 /**
143 * Node for the attribute stack.
144 */
145 struct gl_attrib_node
146 {
147 GLbitfield kind;
148 void *data;
149 struct gl_attrib_node *next;
150 };
151
152
153
154 /**
155 * Special struct for saving/restoring texture state (GL_TEXTURE_BIT)
156 */
157 struct texture_state
158 {
159 struct gl_texture_attrib Texture; /**< The usual context state */
160
161 /** to save per texture object state (wrap modes, filters, etc): */
162 struct gl_texture_object SavedObj[MAX_TEXTURE_UNITS][NUM_TEXTURE_TARGETS];
163
164 /**
165 * To save references to texture objects (so they don't get accidentally
166 * deleted while saved in the attribute stack).
167 */
168 struct gl_texture_object *SavedTexRef[MAX_TEXTURE_UNITS][NUM_TEXTURE_TARGETS];
169
170 /* We need to keep a reference to the shared state. That's where the
171 * default texture objects are kept. We don't want that state to be
172 * freed while the attribute stack contains pointers to any default
173 * texture objects.
174 */
175 struct gl_shared_state *SharedRef;
176 };
177
178
179 /**
180 * Allocate new attribute node of given type/kind. Attach payload data.
181 * Insert it into the linked list named by 'head'.
182 */
183 static void
184 save_attrib_data(struct gl_attrib_node **head,
185 GLbitfield kind, void *payload)
186 {
187 struct gl_attrib_node *n = MALLOC_STRUCT(gl_attrib_node);
188 if (n) {
189 n->kind = kind;
190 n->data = payload;
191 /* insert at head */
192 n->next = *head;
193 *head = n;
194 }
195 else {
196 /* out of memory! */
197 }
198 }
199
200
201 void GLAPIENTRY
202 _mesa_PushAttrib(GLbitfield mask)
203 {
204 struct gl_attrib_node *head;
205
206 GET_CURRENT_CONTEXT(ctx);
207 ASSERT_OUTSIDE_BEGIN_END(ctx);
208
209 if (MESA_VERBOSE & VERBOSE_API)
210 _mesa_debug(ctx, "glPushAttrib %x\n", (int) mask);
211
212 if (ctx->AttribStackDepth >= MAX_ATTRIB_STACK_DEPTH) {
213 _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
214 return;
215 }
216
217 /* Build linked list of attribute nodes which save all attribute */
218 /* groups specified by the mask. */
219 head = NULL;
220
221 if (mask & GL_ACCUM_BUFFER_BIT) {
222 struct gl_accum_attrib *attr;
223 attr = MALLOC_STRUCT( gl_accum_attrib );
224 memcpy( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );
225 save_attrib_data(&head, GL_ACCUM_BUFFER_BIT, attr);
226 }
227
228 if (mask & GL_COLOR_BUFFER_BIT) {
229 GLuint i;
230 struct gl_colorbuffer_attrib *attr;
231 attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
232 memcpy( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
233 /* push the Draw FBO's DrawBuffer[] state, not ctx->Color.DrawBuffer[] */
234 for (i = 0; i < ctx->Const.MaxDrawBuffers; i ++)
235 attr->DrawBuffer[i] = ctx->DrawBuffer->ColorDrawBuffer[i];
236 save_attrib_data(&head, GL_COLOR_BUFFER_BIT, attr);
237 }
238
239 if (mask & GL_CURRENT_BIT) {
240 struct gl_current_attrib *attr;
241 FLUSH_CURRENT( ctx, 0 );
242 attr = MALLOC_STRUCT( gl_current_attrib );
243 memcpy( attr, &ctx->Current, sizeof(struct gl_current_attrib) );
244 save_attrib_data(&head, GL_CURRENT_BIT, attr);
245 }
246
247 if (mask & GL_DEPTH_BUFFER_BIT) {
248 struct gl_depthbuffer_attrib *attr;
249 attr = MALLOC_STRUCT( gl_depthbuffer_attrib );
250 memcpy( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );
251 save_attrib_data(&head, GL_DEPTH_BUFFER_BIT, attr);
252 }
253
254 if (mask & GL_ENABLE_BIT) {
255 struct gl_enable_attrib *attr;
256 GLuint i;
257 attr = MALLOC_STRUCT( gl_enable_attrib );
258 /* Copy enable flags from all other attributes into the enable struct. */
259 attr->AlphaTest = ctx->Color.AlphaEnabled;
260 attr->AutoNormal = ctx->Eval.AutoNormal;
261 attr->Blend = ctx->Color.BlendEnabled;
262 attr->ClipPlanes = ctx->Transform.ClipPlanesEnabled;
263 attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;
264 attr->CullFace = ctx->Polygon.CullFlag;
265 attr->DepthClamp = ctx->Transform.DepthClamp;
266 attr->DepthTest = ctx->Depth.Test;
267 attr->Dither = ctx->Color.DitherFlag;
268 attr->Fog = ctx->Fog.Enabled;
269 for (i = 0; i < ctx->Const.MaxLights; i++) {
270 attr->Light[i] = ctx->Light.Light[i].Enabled;
271 }
272 attr->Lighting = ctx->Light.Enabled;
273 attr->LineSmooth = ctx->Line.SmoothFlag;
274 attr->LineStipple = ctx->Line.StippleFlag;
275 attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
276 attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
277 attr->Map1Color4 = ctx->Eval.Map1Color4;
278 attr->Map1Index = ctx->Eval.Map1Index;
279 attr->Map1Normal = ctx->Eval.Map1Normal;
280 attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
281 attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
282 attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
283 attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
284 attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
285 attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
286 attr->Map2Color4 = ctx->Eval.Map2Color4;
287 attr->Map2Index = ctx->Eval.Map2Index;
288 attr->Map2Normal = ctx->Eval.Map2Normal;
289 attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
290 attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
291 attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
292 attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
293 attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
294 attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
295 attr->Normalize = ctx->Transform.Normalize;
296 attr->RasterPositionUnclipped = ctx->Transform.RasterPositionUnclipped;
297 attr->PointSmooth = ctx->Point.SmoothFlag;
298 attr->PointSprite = ctx->Point.PointSprite;
299 attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;
300 attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;
301 attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;
302 attr->PolygonSmooth = ctx->Polygon.SmoothFlag;
303 attr->PolygonStipple = ctx->Polygon.StippleFlag;
304 attr->RescaleNormals = ctx->Transform.RescaleNormals;
305 attr->Scissor = ctx->Scissor.Enabled;
306 attr->Stencil = ctx->Stencil.Enabled;
307 attr->StencilTwoSide = ctx->Stencil.TestTwoSide;
308 attr->MultisampleEnabled = ctx->Multisample.Enabled;
309 attr->SampleAlphaToCoverage = ctx->Multisample.SampleAlphaToCoverage;
310 attr->SampleAlphaToOne = ctx->Multisample.SampleAlphaToOne;
311 attr->SampleCoverage = ctx->Multisample.SampleCoverage;
312 for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
313 attr->Texture[i] = ctx->Texture.Unit[i].Enabled;
314 attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
315 }
316 /* GL_NV_vertex_program */
317 attr->VertexProgram = ctx->VertexProgram.Enabled;
318 attr->VertexProgramPointSize = ctx->VertexProgram.PointSizeEnabled;
319 attr->VertexProgramTwoSide = ctx->VertexProgram.TwoSideEnabled;
320 save_attrib_data(&head, GL_ENABLE_BIT, attr);
321
322 /* GL_ARB_framebuffer_sRGB / GL_EXT_framebuffer_sRGB */
323 attr->sRGBEnabled = ctx->Color.sRGBEnabled;
324 }
325
326 if (mask & GL_EVAL_BIT) {
327 struct gl_eval_attrib *attr;
328 attr = MALLOC_STRUCT( gl_eval_attrib );
329 memcpy( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
330 save_attrib_data(&head, GL_EVAL_BIT, attr);
331 }
332
333 if (mask & GL_FOG_BIT) {
334 struct gl_fog_attrib *attr;
335 attr = MALLOC_STRUCT( gl_fog_attrib );
336 memcpy( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
337 save_attrib_data(&head, GL_FOG_BIT, attr);
338 }
339
340 if (mask & GL_HINT_BIT) {
341 struct gl_hint_attrib *attr;
342 attr = MALLOC_STRUCT( gl_hint_attrib );
343 memcpy( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
344 save_attrib_data(&head, GL_HINT_BIT, attr);
345 }
346
347 if (mask & GL_LIGHTING_BIT) {
348 struct gl_light_attrib *attr;
349 FLUSH_CURRENT(ctx, 0); /* flush material changes */
350 attr = MALLOC_STRUCT( gl_light_attrib );
351 memcpy( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
352 save_attrib_data(&head, GL_LIGHTING_BIT, attr);
353 }
354
355 if (mask & GL_LINE_BIT) {
356 struct gl_line_attrib *attr;
357 attr = MALLOC_STRUCT( gl_line_attrib );
358 memcpy( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
359 save_attrib_data(&head, GL_LINE_BIT, attr);
360 }
361
362 if (mask & GL_LIST_BIT) {
363 struct gl_list_attrib *attr;
364 attr = MALLOC_STRUCT( gl_list_attrib );
365 memcpy( attr, &ctx->List, sizeof(struct gl_list_attrib) );
366 save_attrib_data(&head, GL_LIST_BIT, attr);
367 }
368
369 if (mask & GL_PIXEL_MODE_BIT) {
370 struct gl_pixel_attrib *attr;
371 attr = MALLOC_STRUCT( gl_pixel_attrib );
372 memcpy( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
373 /* push the Read FBO's ReadBuffer state, not ctx->Pixel.ReadBuffer */
374 attr->ReadBuffer = ctx->ReadBuffer->ColorReadBuffer;
375 save_attrib_data(&head, GL_PIXEL_MODE_BIT, attr);
376 }
377
378 if (mask & GL_POINT_BIT) {
379 struct gl_point_attrib *attr;
380 attr = MALLOC_STRUCT( gl_point_attrib );
381 memcpy( attr, &ctx->Point, sizeof(struct gl_point_attrib) );
382 save_attrib_data(&head, GL_POINT_BIT, attr);
383 }
384
385 if (mask & GL_POLYGON_BIT) {
386 struct gl_polygon_attrib *attr;
387 attr = MALLOC_STRUCT( gl_polygon_attrib );
388 memcpy( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );
389 save_attrib_data(&head, GL_POLYGON_BIT, attr);
390 }
391
392 if (mask & GL_POLYGON_STIPPLE_BIT) {
393 GLuint *stipple;
394 stipple = malloc( 32*sizeof(GLuint) );
395 memcpy( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );
396 save_attrib_data(&head, GL_POLYGON_STIPPLE_BIT, stipple);
397 }
398
399 if (mask & GL_SCISSOR_BIT) {
400 struct gl_scissor_attrib *attr;
401 attr = MALLOC_STRUCT( gl_scissor_attrib );
402 memcpy( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );
403 save_attrib_data(&head, GL_SCISSOR_BIT, attr);
404 }
405
406 if (mask & GL_STENCIL_BUFFER_BIT) {
407 struct gl_stencil_attrib *attr;
408 attr = MALLOC_STRUCT( gl_stencil_attrib );
409 memcpy( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );
410 save_attrib_data(&head, GL_STENCIL_BUFFER_BIT, attr);
411 }
412
413 if (mask & GL_TEXTURE_BIT) {
414 struct texture_state *texstate = CALLOC_STRUCT(texture_state);
415 GLuint u, tex;
416
417 if (!texstate) {
418 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glPushAttrib(GL_TEXTURE_BIT)");
419 goto end;
420 }
421
422 _mesa_lock_context_textures(ctx);
423
424 /* copy/save the bulk of texture state here */
425 memcpy(&texstate->Texture, &ctx->Texture, sizeof(ctx->Texture));
426
427 /* Save references to the currently bound texture objects so they don't
428 * accidentally get deleted while referenced in the attribute stack.
429 */
430 for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
431 for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {
432 _mesa_reference_texobj(&texstate->SavedTexRef[u][tex],
433 ctx->Texture.Unit[u].CurrentTex[tex]);
434 }
435 }
436
437 /* copy state/contents of the currently bound texture objects */
438 for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
439 for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {
440 _mesa_copy_texture_object(&texstate->SavedObj[u][tex],
441 ctx->Texture.Unit[u].CurrentTex[tex]);
442 }
443 }
444
445 _mesa_reference_shared_state(ctx, &texstate->SharedRef, ctx->Shared);
446
447 _mesa_unlock_context_textures(ctx);
448
449 save_attrib_data(&head, GL_TEXTURE_BIT, texstate);
450 }
451
452 if (mask & GL_TRANSFORM_BIT) {
453 struct gl_transform_attrib *attr;
454 attr = MALLOC_STRUCT( gl_transform_attrib );
455 memcpy( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
456 save_attrib_data(&head, GL_TRANSFORM_BIT, attr);
457 }
458
459 if (mask & GL_VIEWPORT_BIT) {
460 struct gl_viewport_attrib *attr;
461 attr = MALLOC_STRUCT( gl_viewport_attrib );
462 memcpy( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
463 save_attrib_data(&head, GL_VIEWPORT_BIT, attr);
464 }
465
466 /* GL_ARB_multisample */
467 if (mask & GL_MULTISAMPLE_BIT_ARB) {
468 struct gl_multisample_attrib *attr;
469 attr = MALLOC_STRUCT( gl_multisample_attrib );
470 memcpy( attr, &ctx->Multisample, sizeof(struct gl_multisample_attrib) );
471 save_attrib_data(&head, GL_MULTISAMPLE_BIT_ARB, attr);
472 }
473
474 end:
475 ctx->AttribStack[ctx->AttribStackDepth] = head;
476 ctx->AttribStackDepth++;
477 }
478
479
480
481 static void
482 pop_enable_group(struct gl_context *ctx, const struct gl_enable_attrib *enable)
483 {
484 const GLuint curTexUnitSave = ctx->Texture.CurrentUnit;
485 GLuint i;
486
487 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM) \
488 if ((VALUE) != (NEWVALUE)) { \
489 _mesa_set_enable( ctx, ENUM, (NEWVALUE) ); \
490 }
491
492 TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
493 if (ctx->Color.BlendEnabled != enable->Blend) {
494 if (ctx->Extensions.EXT_draw_buffers2) {
495 GLuint i;
496 for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
497 _mesa_set_enablei(ctx, GL_BLEND, i, (enable->Blend >> i) & 1);
498 }
499 }
500 else {
501 _mesa_set_enable(ctx, GL_BLEND, (enable->Blend & 1));
502 }
503 }
504
505 for (i=0;i<ctx->Const.MaxClipPlanes;i++) {
506 const GLuint mask = 1 << i;
507 if ((ctx->Transform.ClipPlanesEnabled & mask) != (enable->ClipPlanes & mask))
508 _mesa_set_enable(ctx, (GLenum) (GL_CLIP_PLANE0 + i),
509 !!(enable->ClipPlanes & mask));
510 }
511
512 TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial,
513 GL_COLOR_MATERIAL);
514 TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
515 TEST_AND_UPDATE(ctx->Transform.DepthClamp, enable->DepthClamp,
516 GL_DEPTH_CLAMP);
517 TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
518 TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
519 TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
520 TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
521 TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
522 TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple,
523 GL_LINE_STIPPLE);
524 TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp,
525 GL_INDEX_LOGIC_OP);
526 TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp,
527 GL_COLOR_LOGIC_OP);
528
529 TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
530 TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
531 TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
532 TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1,
533 GL_MAP1_TEXTURE_COORD_1);
534 TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2,
535 GL_MAP1_TEXTURE_COORD_2);
536 TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3,
537 GL_MAP1_TEXTURE_COORD_3);
538 TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4,
539 GL_MAP1_TEXTURE_COORD_4);
540 TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3,
541 GL_MAP1_VERTEX_3);
542 TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4,
543 GL_MAP1_VERTEX_4);
544
545 TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
546 TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
547 TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
548 TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1,
549 GL_MAP2_TEXTURE_COORD_1);
550 TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2,
551 GL_MAP2_TEXTURE_COORD_2);
552 TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3,
553 GL_MAP2_TEXTURE_COORD_3);
554 TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4,
555 GL_MAP2_TEXTURE_COORD_4);
556 TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3,
557 GL_MAP2_VERTEX_3);
558 TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4,
559 GL_MAP2_VERTEX_4);
560
561 TEST_AND_UPDATE(ctx->Eval.AutoNormal, enable->AutoNormal, GL_AUTO_NORMAL);
562 TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
563 TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals,
564 GL_RESCALE_NORMAL_EXT);
565 TEST_AND_UPDATE(ctx->Transform.RasterPositionUnclipped,
566 enable->RasterPositionUnclipped,
567 GL_RASTER_POSITION_UNCLIPPED_IBM);
568 TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth,
569 GL_POINT_SMOOTH);
570 if (ctx->Extensions.NV_point_sprite || ctx->Extensions.ARB_point_sprite) {
571 TEST_AND_UPDATE(ctx->Point.PointSprite, enable->PointSprite,
572 GL_POINT_SPRITE_NV);
573 }
574 TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint,
575 GL_POLYGON_OFFSET_POINT);
576 TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine,
577 GL_POLYGON_OFFSET_LINE);
578 TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill,
579 GL_POLYGON_OFFSET_FILL);
580 TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth,
581 GL_POLYGON_SMOOTH);
582 TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple,
583 GL_POLYGON_STIPPLE);
584 TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
585 TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
586 if (ctx->Extensions.EXT_stencil_two_side) {
587 TEST_AND_UPDATE(ctx->Stencil.TestTwoSide, enable->StencilTwoSide, GL_STENCIL_TEST_TWO_SIDE_EXT);
588 }
589 TEST_AND_UPDATE(ctx->Multisample.Enabled, enable->MultisampleEnabled,
590 GL_MULTISAMPLE_ARB);
591 TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToCoverage,
592 enable->SampleAlphaToCoverage,
593 GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
594 TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToOne,
595 enable->SampleAlphaToOne,
596 GL_SAMPLE_ALPHA_TO_ONE_ARB);
597 TEST_AND_UPDATE(ctx->Multisample.SampleCoverage,
598 enable->SampleCoverage,
599 GL_SAMPLE_COVERAGE_ARB);
600 /* GL_ARB_vertex_program, GL_NV_vertex_program */
601 TEST_AND_UPDATE(ctx->VertexProgram.Enabled,
602 enable->VertexProgram,
603 GL_VERTEX_PROGRAM_ARB);
604 TEST_AND_UPDATE(ctx->VertexProgram.PointSizeEnabled,
605 enable->VertexProgramPointSize,
606 GL_VERTEX_PROGRAM_POINT_SIZE_ARB);
607 TEST_AND_UPDATE(ctx->VertexProgram.TwoSideEnabled,
608 enable->VertexProgramTwoSide,
609 GL_VERTEX_PROGRAM_TWO_SIDE_ARB);
610
611 /* GL_ARB_framebuffer_sRGB / GL_EXT_framebuffer_sRGB */
612 TEST_AND_UPDATE(ctx->Color.sRGBEnabled, enable->sRGBEnabled,
613 GL_FRAMEBUFFER_SRGB);
614
615 /* texture unit enables */
616 for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
617 const GLbitfield enabled = enable->Texture[i];
618 const GLbitfield genEnabled = enable->TexGen[i];
619
620 if (ctx->Texture.Unit[i].Enabled != enabled) {
621 _mesa_ActiveTextureARB(GL_TEXTURE0 + i);
622
623 _mesa_set_enable(ctx, GL_TEXTURE_1D, !!(enabled & TEXTURE_1D_BIT));
624 _mesa_set_enable(ctx, GL_TEXTURE_2D, !!(enabled & TEXTURE_2D_BIT));
625 _mesa_set_enable(ctx, GL_TEXTURE_3D, !!(enabled & TEXTURE_3D_BIT));
626 if (ctx->Extensions.NV_texture_rectangle) {
627 _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_ARB,
628 !!(enabled & TEXTURE_RECT_BIT));
629 }
630 if (ctx->Extensions.ARB_texture_cube_map) {
631 _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP,
632 !!(enabled & TEXTURE_CUBE_BIT));
633 }
634 if (ctx->Extensions.MESA_texture_array) {
635 _mesa_set_enable(ctx, GL_TEXTURE_1D_ARRAY_EXT,
636 !!(enabled & TEXTURE_1D_ARRAY_BIT));
637 _mesa_set_enable(ctx, GL_TEXTURE_2D_ARRAY_EXT,
638 !!(enabled & TEXTURE_2D_ARRAY_BIT));
639 }
640 }
641
642 if (ctx->Texture.Unit[i].TexGenEnabled != genEnabled) {
643 _mesa_ActiveTextureARB(GL_TEXTURE0 + i);
644 _mesa_set_enable(ctx, GL_TEXTURE_GEN_S, !!(genEnabled & S_BIT));
645 _mesa_set_enable(ctx, GL_TEXTURE_GEN_T, !!(genEnabled & T_BIT));
646 _mesa_set_enable(ctx, GL_TEXTURE_GEN_R, !!(genEnabled & R_BIT));
647 _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q, !!(genEnabled & Q_BIT));
648 }
649 }
650
651 _mesa_ActiveTextureARB(GL_TEXTURE0 + curTexUnitSave);
652 }
653
654
655 /**
656 * Pop/restore texture attribute/group state.
657 */
658 static void
659 pop_texture_group(struct gl_context *ctx, struct texture_state *texstate)
660 {
661 GLuint u;
662
663 _mesa_lock_context_textures(ctx);
664
665 for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
666 const struct gl_texture_unit *unit = &texstate->Texture.Unit[u];
667 GLuint tgt;
668
669 _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + u);
670 _mesa_set_enable(ctx, GL_TEXTURE_1D, !!(unit->Enabled & TEXTURE_1D_BIT));
671 _mesa_set_enable(ctx, GL_TEXTURE_2D, !!(unit->Enabled & TEXTURE_2D_BIT));
672 _mesa_set_enable(ctx, GL_TEXTURE_3D, !!(unit->Enabled & TEXTURE_3D_BIT));
673 if (ctx->Extensions.ARB_texture_cube_map) {
674 _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP_ARB,
675 !!(unit->Enabled & TEXTURE_CUBE_BIT));
676 }
677 if (ctx->Extensions.NV_texture_rectangle) {
678 _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_NV,
679 !!(unit->Enabled & TEXTURE_RECT_BIT));
680 }
681 if (ctx->Extensions.MESA_texture_array) {
682 _mesa_set_enable(ctx, GL_TEXTURE_1D_ARRAY_EXT,
683 !!(unit->Enabled & TEXTURE_1D_ARRAY_BIT));
684 _mesa_set_enable(ctx, GL_TEXTURE_2D_ARRAY_EXT,
685 !!(unit->Enabled & TEXTURE_2D_ARRAY_BIT));
686 }
687
688 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->EnvMode);
689 _mesa_TexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, unit->EnvColor);
690 _mesa_TexGeni(GL_S, GL_TEXTURE_GEN_MODE, unit->GenS.Mode);
691 _mesa_TexGeni(GL_T, GL_TEXTURE_GEN_MODE, unit->GenT.Mode);
692 _mesa_TexGeni(GL_R, GL_TEXTURE_GEN_MODE, unit->GenR.Mode);
693 _mesa_TexGeni(GL_Q, GL_TEXTURE_GEN_MODE, unit->GenQ.Mode);
694 _mesa_TexGenfv(GL_S, GL_OBJECT_PLANE, unit->GenS.ObjectPlane);
695 _mesa_TexGenfv(GL_T, GL_OBJECT_PLANE, unit->GenT.ObjectPlane);
696 _mesa_TexGenfv(GL_R, GL_OBJECT_PLANE, unit->GenR.ObjectPlane);
697 _mesa_TexGenfv(GL_Q, GL_OBJECT_PLANE, unit->GenQ.ObjectPlane);
698 /* Eye plane done differently to avoid re-transformation */
699 {
700 struct gl_texture_unit *destUnit = &ctx->Texture.Unit[u];
701 COPY_4FV(destUnit->GenS.EyePlane, unit->GenS.EyePlane);
702 COPY_4FV(destUnit->GenT.EyePlane, unit->GenT.EyePlane);
703 COPY_4FV(destUnit->GenR.EyePlane, unit->GenR.EyePlane);
704 COPY_4FV(destUnit->GenQ.EyePlane, unit->GenQ.EyePlane);
705 if (ctx->Driver.TexGen) {
706 ctx->Driver.TexGen(ctx, GL_S, GL_EYE_PLANE, unit->GenS.EyePlane);
707 ctx->Driver.TexGen(ctx, GL_T, GL_EYE_PLANE, unit->GenT.EyePlane);
708 ctx->Driver.TexGen(ctx, GL_R, GL_EYE_PLANE, unit->GenR.EyePlane);
709 ctx->Driver.TexGen(ctx, GL_Q, GL_EYE_PLANE, unit->GenQ.EyePlane);
710 }
711 }
712 _mesa_set_enable(ctx, GL_TEXTURE_GEN_S, !!(unit->TexGenEnabled & S_BIT));
713 _mesa_set_enable(ctx, GL_TEXTURE_GEN_T, !!(unit->TexGenEnabled & T_BIT));
714 _mesa_set_enable(ctx, GL_TEXTURE_GEN_R, !!(unit->TexGenEnabled & R_BIT));
715 _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q, !!(unit->TexGenEnabled & Q_BIT));
716 _mesa_TexEnvf(GL_TEXTURE_FILTER_CONTROL, GL_TEXTURE_LOD_BIAS,
717 unit->LodBias);
718 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB,
719 unit->Combine.ModeRGB);
720 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA,
721 unit->Combine.ModeA);
722 {
723 const GLuint n = ctx->Extensions.NV_texture_env_combine4 ? 4 : 3;
724 GLuint i;
725 for (i = 0; i < n; i++) {
726 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB + i,
727 unit->Combine.SourceRGB[i]);
728 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA + i,
729 unit->Combine.SourceA[i]);
730 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB + i,
731 unit->Combine.OperandRGB[i]);
732 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA + i,
733 unit->Combine.OperandA[i]);
734 }
735 }
736 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE,
737 1 << unit->Combine.ScaleShiftRGB);
738 _mesa_TexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE,
739 1 << unit->Combine.ScaleShiftA);
740
741 /* Restore texture object state for each target */
742 for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
743 const struct gl_texture_object *obj = NULL;
744 const struct gl_sampler_object *samp;
745 GLenum target;
746
747 obj = &texstate->SavedObj[u][tgt];
748
749 /* don't restore state for unsupported targets to prevent
750 * raising GL errors.
751 */
752 if (obj->Target == GL_TEXTURE_CUBE_MAP_ARB &&
753 !ctx->Extensions.ARB_texture_cube_map) {
754 continue;
755 }
756 else if (obj->Target == GL_TEXTURE_RECTANGLE_NV &&
757 !ctx->Extensions.NV_texture_rectangle) {
758 continue;
759 }
760 else if ((obj->Target == GL_TEXTURE_1D_ARRAY_EXT ||
761 obj->Target == GL_TEXTURE_2D_ARRAY_EXT) &&
762 !ctx->Extensions.MESA_texture_array) {
763 continue;
764 }
765 else if (obj->Target == GL_TEXTURE_BUFFER)
766 continue;
767 else if (obj->Target == GL_TEXTURE_EXTERNAL_OES)
768 continue;
769
770 target = obj->Target;
771
772 _mesa_BindTexture(target, obj->Name);
773
774 samp = &obj->Sampler;
775
776 _mesa_TexParameterfv(target, GL_TEXTURE_BORDER_COLOR, samp->BorderColor.f);
777 _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, samp->WrapS);
778 _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, samp->WrapT);
779 _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, samp->WrapR);
780 _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, samp->MinFilter);
781 _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, samp->MagFilter);
782 _mesa_TexParameterf(target, GL_TEXTURE_MIN_LOD, samp->MinLod);
783 _mesa_TexParameterf(target, GL_TEXTURE_MAX_LOD, samp->MaxLod);
784 _mesa_TexParameterf(target, GL_TEXTURE_LOD_BIAS, samp->LodBias);
785 _mesa_TexParameterf(target, GL_TEXTURE_PRIORITY, obj->Priority);
786 _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, obj->BaseLevel);
787 if (target != GL_TEXTURE_RECTANGLE_ARB)
788 _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, obj->MaxLevel);
789 if (ctx->Extensions.EXT_texture_filter_anisotropic) {
790 _mesa_TexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT,
791 samp->MaxAnisotropy);
792 }
793 if (ctx->Extensions.ARB_shadow) {
794 _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_MODE,
795 samp->CompareMode);
796 _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_FUNC,
797 samp->CompareFunc);
798 }
799 if (ctx->Extensions.ARB_depth_texture)
800 _mesa_TexParameteri(target, GL_DEPTH_TEXTURE_MODE, obj->DepthMode);
801 }
802
803 /* remove saved references to the texture objects */
804 for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
805 _mesa_reference_texobj(&texstate->SavedTexRef[u][tgt], NULL);
806 }
807 }
808
809 _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + texstate->Texture.CurrentUnit);
810
811 _mesa_reference_shared_state(ctx, &texstate->SharedRef, NULL);
812
813 _mesa_unlock_context_textures(ctx);
814 }
815
816
817 /*
818 * This function is kind of long just because we have to call a lot
819 * of device driver functions to update device driver state.
820 *
821 * XXX As it is now, most of the pop-code calls immediate-mode Mesa functions
822 * in order to restore GL state. This isn't terribly efficient but it
823 * ensures that dirty flags and any derived state gets updated correctly.
824 * We could at least check if the value to restore equals the current value
825 * and then skip the Mesa call.
826 */
827 void GLAPIENTRY
828 _mesa_PopAttrib(void)
829 {
830 struct gl_attrib_node *attr, *next;
831 GET_CURRENT_CONTEXT(ctx);
832 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
833
834 if (ctx->AttribStackDepth == 0) {
835 _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
836 return;
837 }
838
839 ctx->AttribStackDepth--;
840 attr = ctx->AttribStack[ctx->AttribStackDepth];
841
842 while (attr) {
843
844 if (MESA_VERBOSE & VERBOSE_API) {
845 _mesa_debug(ctx, "glPopAttrib %s\n",
846 _mesa_lookup_enum_by_nr(attr->kind));
847 }
848
849 switch (attr->kind) {
850 case GL_ACCUM_BUFFER_BIT:
851 {
852 const struct gl_accum_attrib *accum;
853 accum = (const struct gl_accum_attrib *) attr->data;
854 _mesa_ClearAccum(accum->ClearColor[0],
855 accum->ClearColor[1],
856 accum->ClearColor[2],
857 accum->ClearColor[3]);
858 }
859 break;
860 case GL_COLOR_BUFFER_BIT:
861 {
862 const struct gl_colorbuffer_attrib *color;
863
864 color = (const struct gl_colorbuffer_attrib *) attr->data;
865 _mesa_ClearIndex((GLfloat) color->ClearIndex);
866 _mesa_ClearColor(color->ClearColor.f[0],
867 color->ClearColor.f[1],
868 color->ClearColor.f[2],
869 color->ClearColor.f[3]);
870 _mesa_IndexMask(color->IndexMask);
871 if (!ctx->Extensions.EXT_draw_buffers2) {
872 _mesa_ColorMask((GLboolean) (color->ColorMask[0][0] != 0),
873 (GLboolean) (color->ColorMask[0][1] != 0),
874 (GLboolean) (color->ColorMask[0][2] != 0),
875 (GLboolean) (color->ColorMask[0][3] != 0));
876 }
877 else {
878 GLuint i;
879 for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
880 _mesa_ColorMaskIndexed(i,
881 (GLboolean) (color->ColorMask[i][0] != 0),
882 (GLboolean) (color->ColorMask[i][1] != 0),
883 (GLboolean) (color->ColorMask[i][2] != 0),
884 (GLboolean) (color->ColorMask[i][3] != 0));
885 }
886 }
887 {
888 /* Need to determine if more than one color output is
889 * specified. If so, call glDrawBuffersARB, else call
890 * glDrawBuffer(). This is a subtle, but essential point
891 * since GL_FRONT (for example) is illegal for the former
892 * function, but legal for the later.
893 */
894 GLboolean multipleBuffers = GL_FALSE;
895 GLuint i;
896
897 for (i = 1; i < ctx->Const.MaxDrawBuffers; i++) {
898 if (color->DrawBuffer[i] != GL_NONE) {
899 multipleBuffers = GL_TRUE;
900 break;
901 }
902 }
903 /* Call the API_level functions, not _mesa_drawbuffers()
904 * since we need to do error checking on the pop'd
905 * GL_DRAW_BUFFER.
906 * Ex: if GL_FRONT were pushed, but we're popping with a
907 * user FBO bound, GL_FRONT will be illegal and we'll need
908 * to record that error. Per OpenGL ARB decision.
909 */
910 if (multipleBuffers)
911 _mesa_DrawBuffersARB(ctx->Const.MaxDrawBuffers,
912 color->DrawBuffer);
913 else
914 _mesa_DrawBuffer(color->DrawBuffer[0]);
915 }
916 _mesa_set_enable(ctx, GL_ALPHA_TEST, color->AlphaEnabled);
917 _mesa_AlphaFunc(color->AlphaFunc, color->AlphaRefUnclamped);
918 if (ctx->Color.BlendEnabled != color->BlendEnabled) {
919 if (ctx->Extensions.EXT_draw_buffers2) {
920 GLuint i;
921 for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
922 _mesa_set_enablei(ctx, GL_BLEND, i,
923 (color->BlendEnabled >> i) & 1);
924 }
925 }
926 else {
927 _mesa_set_enable(ctx, GL_BLEND, (color->BlendEnabled & 1));
928 }
929 }
930 if (ctx->Color._BlendFuncPerBuffer ||
931 ctx->Color._BlendEquationPerBuffer) {
932 /* set blend per buffer */
933 GLuint buf;
934 for (buf = 0; buf < ctx->Const.MaxDrawBuffers; buf++) {
935 _mesa_BlendFuncSeparatei(buf, color->Blend[buf].SrcRGB,
936 color->Blend[buf].DstRGB,
937 color->Blend[buf].SrcA,
938 color->Blend[buf].DstA);
939 _mesa_BlendEquationSeparatei(buf,
940 color->Blend[buf].EquationRGB,
941 color->Blend[buf].EquationA);
942 }
943 }
944 else {
945 /* set same blend modes for all buffers */
946 _mesa_BlendFuncSeparateEXT(color->Blend[0].SrcRGB,
947 color->Blend[0].DstRGB,
948 color->Blend[0].SrcA,
949 color->Blend[0].DstA);
950 /* This special case is because glBlendEquationSeparateEXT
951 * cannot take GL_LOGIC_OP as a parameter.
952 */
953 if (color->Blend[0].EquationRGB ==
954 color->Blend[0].EquationA) {
955 _mesa_BlendEquation(color->Blend[0].EquationRGB);
956 }
957 else {
958 _mesa_BlendEquationSeparateEXT(
959 color->Blend[0].EquationRGB,
960 color->Blend[0].EquationA);
961 }
962 }
963 _mesa_BlendColor(color->BlendColorUnclamped[0],
964 color->BlendColorUnclamped[1],
965 color->BlendColorUnclamped[2],
966 color->BlendColorUnclamped[3]);
967 _mesa_LogicOp(color->LogicOp);
968 _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP,
969 color->ColorLogicOpEnabled);
970 _mesa_set_enable(ctx, GL_INDEX_LOGIC_OP,
971 color->IndexLogicOpEnabled);
972 _mesa_set_enable(ctx, GL_DITHER, color->DitherFlag);
973 _mesa_ClampColorARB(GL_CLAMP_FRAGMENT_COLOR_ARB, color->ClampFragmentColor);
974 _mesa_ClampColorARB(GL_CLAMP_READ_COLOR_ARB, color->ClampReadColor);
975
976 /* GL_ARB_framebuffer_sRGB / GL_EXT_framebuffer_sRGB */
977 if (ctx->Extensions.EXT_framebuffer_sRGB)
978 _mesa_set_enable(ctx, GL_FRAMEBUFFER_SRGB, color->sRGBEnabled);
979 }
980 break;
981 case GL_CURRENT_BIT:
982 FLUSH_CURRENT( ctx, 0 );
983 memcpy( &ctx->Current, attr->data,
984 sizeof(struct gl_current_attrib) );
985 break;
986 case GL_DEPTH_BUFFER_BIT:
987 {
988 const struct gl_depthbuffer_attrib *depth;
989 depth = (const struct gl_depthbuffer_attrib *) attr->data;
990 _mesa_DepthFunc(depth->Func);
991 _mesa_ClearDepth(depth->Clear);
992 _mesa_set_enable(ctx, GL_DEPTH_TEST, depth->Test);
993 _mesa_DepthMask(depth->Mask);
994 }
995 break;
996 case GL_ENABLE_BIT:
997 {
998 const struct gl_enable_attrib *enable;
999 enable = (const struct gl_enable_attrib *) attr->data;
1000 pop_enable_group(ctx, enable);
1001 ctx->NewState |= _NEW_ALL;
1002 }
1003 break;
1004 case GL_EVAL_BIT:
1005 memcpy( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
1006 ctx->NewState |= _NEW_EVAL;
1007 break;
1008 case GL_FOG_BIT:
1009 {
1010 const struct gl_fog_attrib *fog;
1011 fog = (const struct gl_fog_attrib *) attr->data;
1012 _mesa_set_enable(ctx, GL_FOG, fog->Enabled);
1013 _mesa_Fogfv(GL_FOG_COLOR, fog->Color);
1014 _mesa_Fogf(GL_FOG_DENSITY, fog->Density);
1015 _mesa_Fogf(GL_FOG_START, fog->Start);
1016 _mesa_Fogf(GL_FOG_END, fog->End);
1017 _mesa_Fogf(GL_FOG_INDEX, fog->Index);
1018 _mesa_Fogi(GL_FOG_MODE, fog->Mode);
1019 }
1020 break;
1021 case GL_HINT_BIT:
1022 {
1023 const struct gl_hint_attrib *hint;
1024 hint = (const struct gl_hint_attrib *) attr->data;
1025 _mesa_Hint(GL_PERSPECTIVE_CORRECTION_HINT,
1026 hint->PerspectiveCorrection );
1027 _mesa_Hint(GL_POINT_SMOOTH_HINT, hint->PointSmooth);
1028 _mesa_Hint(GL_LINE_SMOOTH_HINT, hint->LineSmooth);
1029 _mesa_Hint(GL_POLYGON_SMOOTH_HINT, hint->PolygonSmooth);
1030 _mesa_Hint(GL_FOG_HINT, hint->Fog);
1031 _mesa_Hint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT,
1032 hint->ClipVolumeClipping);
1033 _mesa_Hint(GL_TEXTURE_COMPRESSION_HINT_ARB,
1034 hint->TextureCompression);
1035 }
1036 break;
1037 case GL_LIGHTING_BIT:
1038 {
1039 GLuint i;
1040 const struct gl_light_attrib *light;
1041 light = (const struct gl_light_attrib *) attr->data;
1042 /* lighting enable */
1043 _mesa_set_enable(ctx, GL_LIGHTING, light->Enabled);
1044 /* per-light state */
1045 if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top))
1046 _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
1047
1048 for (i = 0; i < ctx->Const.MaxLights; i++) {
1049 const struct gl_light *l = &light->Light[i];
1050 _mesa_set_enable(ctx, GL_LIGHT0 + i, l->Enabled);
1051 _mesa_light(ctx, i, GL_AMBIENT, l->Ambient);
1052 _mesa_light(ctx, i, GL_DIFFUSE, l->Diffuse);
1053 _mesa_light(ctx, i, GL_SPECULAR, l->Specular );
1054 _mesa_light(ctx, i, GL_POSITION, l->EyePosition);
1055 _mesa_light(ctx, i, GL_SPOT_DIRECTION, l->SpotDirection);
1056 {
1057 GLfloat p[4] = { 0 };
1058 p[0] = l->SpotExponent;
1059 _mesa_light(ctx, i, GL_SPOT_EXPONENT, p);
1060 }
1061 {
1062 GLfloat p[4] = { 0 };
1063 p[0] = l->SpotCutoff;
1064 _mesa_light(ctx, i, GL_SPOT_CUTOFF, p);
1065 }
1066 {
1067 GLfloat p[4] = { 0 };
1068 p[0] = l->ConstantAttenuation;
1069 _mesa_light(ctx, i, GL_CONSTANT_ATTENUATION, p);
1070 }
1071 {
1072 GLfloat p[4] = { 0 };
1073 p[0] = l->LinearAttenuation;
1074 _mesa_light(ctx, i, GL_LINEAR_ATTENUATION, p);
1075 }
1076 {
1077 GLfloat p[4] = { 0 };
1078 p[0] = l->QuadraticAttenuation;
1079 _mesa_light(ctx, i, GL_QUADRATIC_ATTENUATION, p);
1080 }
1081 }
1082 /* light model */
1083 _mesa_LightModelfv(GL_LIGHT_MODEL_AMBIENT,
1084 light->Model.Ambient);
1085 _mesa_LightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER,
1086 (GLfloat) light->Model.LocalViewer);
1087 _mesa_LightModelf(GL_LIGHT_MODEL_TWO_SIDE,
1088 (GLfloat) light->Model.TwoSide);
1089 _mesa_LightModelf(GL_LIGHT_MODEL_COLOR_CONTROL,
1090 (GLfloat) light->Model.ColorControl);
1091 /* shade model */
1092 _mesa_ShadeModel(light->ShadeModel);
1093 /* color material */
1094 _mesa_ColorMaterial(light->ColorMaterialFace,
1095 light->ColorMaterialMode);
1096 _mesa_set_enable(ctx, GL_COLOR_MATERIAL,
1097 light->ColorMaterialEnabled);
1098 /* materials */
1099 memcpy(&ctx->Light.Material, &light->Material,
1100 sizeof(struct gl_material));
1101 _mesa_ClampColorARB(GL_CLAMP_VERTEX_COLOR_ARB, light->ClampVertexColor);
1102 }
1103 break;
1104 case GL_LINE_BIT:
1105 {
1106 const struct gl_line_attrib *line;
1107 line = (const struct gl_line_attrib *) attr->data;
1108 _mesa_set_enable(ctx, GL_LINE_SMOOTH, line->SmoothFlag);
1109 _mesa_set_enable(ctx, GL_LINE_STIPPLE, line->StippleFlag);
1110 _mesa_LineStipple(line->StippleFactor, line->StipplePattern);
1111 _mesa_LineWidth(line->Width);
1112 }
1113 break;
1114 case GL_LIST_BIT:
1115 memcpy( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
1116 break;
1117 case GL_PIXEL_MODE_BIT:
1118 memcpy( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
1119 /* XXX what other pixel state needs to be set by function calls? */
1120 _mesa_ReadBuffer(ctx->Pixel.ReadBuffer);
1121 ctx->NewState |= _NEW_PIXEL;
1122 break;
1123 case GL_POINT_BIT:
1124 {
1125 const struct gl_point_attrib *point;
1126 point = (const struct gl_point_attrib *) attr->data;
1127 _mesa_PointSize(point->Size);
1128 _mesa_set_enable(ctx, GL_POINT_SMOOTH, point->SmoothFlag);
1129 if (ctx->Extensions.EXT_point_parameters) {
1130 _mesa_PointParameterfv(GL_DISTANCE_ATTENUATION_EXT,
1131 point->Params);
1132 _mesa_PointParameterf(GL_POINT_SIZE_MIN_EXT,
1133 point->MinSize);
1134 _mesa_PointParameterf(GL_POINT_SIZE_MAX_EXT,
1135 point->MaxSize);
1136 _mesa_PointParameterf(GL_POINT_FADE_THRESHOLD_SIZE_EXT,
1137 point->Threshold);
1138 }
1139 if (ctx->Extensions.NV_point_sprite
1140 || ctx->Extensions.ARB_point_sprite) {
1141 GLuint u;
1142 for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
1143 _mesa_TexEnvi(GL_POINT_SPRITE_NV, GL_COORD_REPLACE_NV,
1144 (GLint) point->CoordReplace[u]);
1145 }
1146 _mesa_set_enable(ctx, GL_POINT_SPRITE_NV,point->PointSprite);
1147 if (ctx->Extensions.NV_point_sprite)
1148 _mesa_PointParameteri(GL_POINT_SPRITE_R_MODE_NV,
1149 ctx->Point.SpriteRMode);
1150 _mesa_PointParameterf(GL_POINT_SPRITE_COORD_ORIGIN,
1151 (GLfloat)ctx->Point.SpriteOrigin);
1152 }
1153 }
1154 break;
1155 case GL_POLYGON_BIT:
1156 {
1157 const struct gl_polygon_attrib *polygon;
1158 polygon = (const struct gl_polygon_attrib *) attr->data;
1159 _mesa_CullFace(polygon->CullFaceMode);
1160 _mesa_FrontFace(polygon->FrontFace);
1161 _mesa_PolygonMode(GL_FRONT, polygon->FrontMode);
1162 _mesa_PolygonMode(GL_BACK, polygon->BackMode);
1163 _mesa_PolygonOffset(polygon->OffsetFactor,
1164 polygon->OffsetUnits);
1165 _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, polygon->SmoothFlag);
1166 _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, polygon->StippleFlag);
1167 _mesa_set_enable(ctx, GL_CULL_FACE, polygon->CullFlag);
1168 _mesa_set_enable(ctx, GL_POLYGON_OFFSET_POINT,
1169 polygon->OffsetPoint);
1170 _mesa_set_enable(ctx, GL_POLYGON_OFFSET_LINE,
1171 polygon->OffsetLine);
1172 _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL,
1173 polygon->OffsetFill);
1174 }
1175 break;
1176 case GL_POLYGON_STIPPLE_BIT:
1177 memcpy( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
1178 ctx->NewState |= _NEW_POLYGONSTIPPLE;
1179 if (ctx->Driver.PolygonStipple)
1180 ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data );
1181 break;
1182 case GL_SCISSOR_BIT:
1183 {
1184 const struct gl_scissor_attrib *scissor;
1185 scissor = (const struct gl_scissor_attrib *) attr->data;
1186 _mesa_Scissor(scissor->X, scissor->Y,
1187 scissor->Width, scissor->Height);
1188 _mesa_set_enable(ctx, GL_SCISSOR_TEST, scissor->Enabled);
1189 }
1190 break;
1191 case GL_STENCIL_BUFFER_BIT:
1192 {
1193 const struct gl_stencil_attrib *stencil;
1194 stencil = (const struct gl_stencil_attrib *) attr->data;
1195 _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);
1196 _mesa_ClearStencil(stencil->Clear);
1197 if (ctx->Extensions.EXT_stencil_two_side) {
1198 _mesa_set_enable(ctx, GL_STENCIL_TEST_TWO_SIDE_EXT,
1199 stencil->TestTwoSide);
1200 _mesa_ActiveStencilFaceEXT(stencil->ActiveFace
1201 ? GL_BACK : GL_FRONT);
1202 }
1203 /* front state */
1204 _mesa_StencilFuncSeparate(GL_FRONT,
1205 stencil->Function[0],
1206 stencil->Ref[0],
1207 stencil->ValueMask[0]);
1208 _mesa_StencilMaskSeparate(GL_FRONT, stencil->WriteMask[0]);
1209 _mesa_StencilOpSeparate(GL_FRONT, stencil->FailFunc[0],
1210 stencil->ZFailFunc[0],
1211 stencil->ZPassFunc[0]);
1212 /* back state */
1213 _mesa_StencilFuncSeparate(GL_BACK,
1214 stencil->Function[1],
1215 stencil->Ref[1],
1216 stencil->ValueMask[1]);
1217 _mesa_StencilMaskSeparate(GL_BACK, stencil->WriteMask[1]);
1218 _mesa_StencilOpSeparate(GL_BACK, stencil->FailFunc[1],
1219 stencil->ZFailFunc[1],
1220 stencil->ZPassFunc[1]);
1221 }
1222 break;
1223 case GL_TRANSFORM_BIT:
1224 {
1225 GLuint i;
1226 const struct gl_transform_attrib *xform;
1227 xform = (const struct gl_transform_attrib *) attr->data;
1228 _mesa_MatrixMode(xform->MatrixMode);
1229 if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top))
1230 _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
1231
1232 /* restore clip planes */
1233 for (i = 0; i < ctx->Const.MaxClipPlanes; i++) {
1234 const GLuint mask = 1 << i;
1235 const GLfloat *eyePlane = xform->EyeUserPlane[i];
1236 COPY_4V(ctx->Transform.EyeUserPlane[i], eyePlane);
1237 _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i,
1238 !!(xform->ClipPlanesEnabled & mask));
1239 if (ctx->Driver.ClipPlane)
1240 ctx->Driver.ClipPlane( ctx, GL_CLIP_PLANE0 + i, eyePlane );
1241 }
1242
1243 /* normalize/rescale */
1244 if (xform->Normalize != ctx->Transform.Normalize)
1245 _mesa_set_enable(ctx, GL_NORMALIZE,ctx->Transform.Normalize);
1246 if (xform->RescaleNormals != ctx->Transform.RescaleNormals)
1247 _mesa_set_enable(ctx, GL_RESCALE_NORMAL_EXT,
1248 ctx->Transform.RescaleNormals);
1249 if (xform->DepthClamp != ctx->Transform.DepthClamp)
1250 _mesa_set_enable(ctx, GL_DEPTH_CLAMP,
1251 ctx->Transform.DepthClamp);
1252 }
1253 break;
1254 case GL_TEXTURE_BIT:
1255 {
1256 struct texture_state *texstate
1257 = (struct texture_state *) attr->data;
1258 pop_texture_group(ctx, texstate);
1259 ctx->NewState |= _NEW_TEXTURE;
1260 }
1261 break;
1262 case GL_VIEWPORT_BIT:
1263 {
1264 const struct gl_viewport_attrib *vp;
1265 vp = (const struct gl_viewport_attrib *) attr->data;
1266 _mesa_Viewport(vp->X, vp->Y, vp->Width, vp->Height);
1267 _mesa_DepthRange(vp->Near, vp->Far);
1268 }
1269 break;
1270 case GL_MULTISAMPLE_BIT_ARB:
1271 {
1272 const struct gl_multisample_attrib *ms;
1273 ms = (const struct gl_multisample_attrib *) attr->data;
1274
1275 TEST_AND_UPDATE(ctx->Multisample.Enabled,
1276 ms->Enabled,
1277 GL_MULTISAMPLE);
1278
1279 TEST_AND_UPDATE(ctx->Multisample.SampleCoverage,
1280 ms->SampleCoverage,
1281 GL_SAMPLE_COVERAGE);
1282
1283 TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToCoverage,
1284 ms->SampleAlphaToCoverage,
1285 GL_SAMPLE_ALPHA_TO_COVERAGE);
1286
1287 TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToOne,
1288 ms->SampleAlphaToOne,
1289 GL_SAMPLE_ALPHA_TO_ONE);
1290
1291 _mesa_SampleCoverageARB(ms->SampleCoverageValue,
1292 ms->SampleCoverageInvert);
1293 }
1294 break;
1295
1296 default:
1297 _mesa_problem( ctx, "Bad attrib flag in PopAttrib");
1298 break;
1299 }
1300
1301 next = attr->next;
1302 free(attr->data);
1303 free(attr);
1304 attr = next;
1305 }
1306 }
1307
1308
1309 /**
1310 * Copy gl_pixelstore_attrib from src to dst, updating buffer
1311 * object refcounts.
1312 */
1313 static void
1314 copy_pixelstore(struct gl_context *ctx,
1315 struct gl_pixelstore_attrib *dst,
1316 const struct gl_pixelstore_attrib *src)
1317 {
1318 dst->Alignment = src->Alignment;
1319 dst->RowLength = src->RowLength;
1320 dst->SkipPixels = src->SkipPixels;
1321 dst->SkipRows = src->SkipRows;
1322 dst->ImageHeight = src->ImageHeight;
1323 dst->SkipImages = src->SkipImages;
1324 dst->SwapBytes = src->SwapBytes;
1325 dst->LsbFirst = src->LsbFirst;
1326 dst->Invert = src->Invert;
1327 _mesa_reference_buffer_object(ctx, &dst->BufferObj, src->BufferObj);
1328 }
1329
1330
1331 #define GL_CLIENT_PACK_BIT (1<<20)
1332 #define GL_CLIENT_UNPACK_BIT (1<<21)
1333
1334 /**
1335 * Copy gl_array_object from src to dest.
1336 * 'dest' must be in an initialized state.
1337 */
1338 static void
1339 copy_array_object(struct gl_context *ctx,
1340 struct gl_array_object *dest,
1341 struct gl_array_object *src)
1342 {
1343 GLuint i;
1344
1345 /* skip Name */
1346 /* skip RefCount */
1347
1348 /* In theory must be the same anyway, but on recreate make sure it matches */
1349 dest->ARBsemantics = src->ARBsemantics;
1350
1351 for (i = 0; i < Elements(src->VertexAttrib); i++)
1352 _mesa_copy_client_array(ctx, &dest->VertexAttrib[i], &src->VertexAttrib[i]);
1353
1354 /* _Enabled must be the same than on push */
1355 dest->_Enabled = src->_Enabled;
1356 dest->_MaxElement = src->_MaxElement;
1357 }
1358
1359 /**
1360 * Copy gl_array_attrib from src to dest.
1361 * 'dest' must be in an initialized state.
1362 */
1363 static void
1364 copy_array_attrib(struct gl_context *ctx,
1365 struct gl_array_attrib *dest,
1366 struct gl_array_attrib *src,
1367 bool vbo_deleted)
1368 {
1369 /* skip ArrayObj */
1370 /* skip DefaultArrayObj, Objects */
1371 dest->ActiveTexture = src->ActiveTexture;
1372 dest->LockFirst = src->LockFirst;
1373 dest->LockCount = src->LockCount;
1374 dest->PrimitiveRestart = src->PrimitiveRestart;
1375 dest->RestartIndex = src->RestartIndex;
1376 /* skip NewState */
1377 /* skip RebindArrays */
1378
1379 if (!vbo_deleted)
1380 copy_array_object(ctx, dest->ArrayObj, src->ArrayObj);
1381
1382 /* skip ArrayBufferObj */
1383 /* skip ElementArrayBufferObj */
1384 }
1385
1386 /**
1387 * Save the content of src to dest.
1388 */
1389 static void
1390 save_array_attrib(struct gl_context *ctx,
1391 struct gl_array_attrib *dest,
1392 struct gl_array_attrib *src)
1393 {
1394 /* Set the Name, needed for restore, but do never overwrite.
1395 * Needs to match value in the object hash. */
1396 dest->ArrayObj->Name = src->ArrayObj->Name;
1397 /* And copy all of the rest. */
1398 copy_array_attrib(ctx, dest, src, false);
1399
1400 /* Just reference them here */
1401 _mesa_reference_buffer_object(ctx, &dest->ArrayBufferObj,
1402 src->ArrayBufferObj);
1403 _mesa_reference_buffer_object(ctx, &dest->ArrayObj->ElementArrayBufferObj,
1404 src->ArrayObj->ElementArrayBufferObj);
1405 }
1406
1407 /**
1408 * Restore the content of src to dest.
1409 */
1410 static void
1411 restore_array_attrib(struct gl_context *ctx,
1412 struct gl_array_attrib *dest,
1413 struct gl_array_attrib *src)
1414 {
1415 /* The ARB_vertex_array_object spec says:
1416 *
1417 * "BindVertexArray fails and an INVALID_OPERATION error is generated
1418 * if array is not a name returned from a previous call to
1419 * GenVertexArrays, or if such a name has since been deleted with
1420 * DeleteVertexArrays."
1421 *
1422 * Therefore popping a deleted VAO cannot magically recreate it.
1423 *
1424 * The semantics of objects created using APPLE_vertex_array_objects behave
1425 * differently. These objects expect to be recreated by pop. Alas.
1426 */
1427 const bool arb_vao = (src->ArrayObj->Name != 0
1428 && src->ArrayObj->ARBsemantics);
1429
1430 if (arb_vao && !_mesa_IsVertexArrayAPPLE(src->ArrayObj->Name))
1431 return;
1432
1433 _mesa_BindVertexArrayAPPLE(src->ArrayObj->Name);
1434
1435 /* Restore or recreate the buffer objects by the names ... */
1436 if (!arb_vao
1437 || src->ArrayBufferObj->Name == 0
1438 || _mesa_IsBufferARB(src->ArrayBufferObj->Name)) {
1439 /* ... and restore its content */
1440 copy_array_attrib(ctx, dest, src, false);
1441
1442 _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB,
1443 src->ArrayBufferObj->Name);
1444 } else {
1445 copy_array_attrib(ctx, dest, src, true);
1446 }
1447
1448 if (!arb_vao
1449 || src->ArrayObj->ElementArrayBufferObj->Name == 0
1450 || _mesa_IsBufferARB(src->ArrayObj->ElementArrayBufferObj->Name))
1451 _mesa_BindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB,
1452 src->ArrayObj->ElementArrayBufferObj->Name);
1453 }
1454
1455 /**
1456 * init/alloc the fields of 'attrib'.
1457 * Needs to the init part matching free_array_attrib_data below.
1458 */
1459 static void
1460 init_array_attrib_data(struct gl_context *ctx,
1461 struct gl_array_attrib *attrib)
1462 {
1463 /* Get a non driver gl_array_object. */
1464 attrib->ArrayObj = CALLOC_STRUCT( gl_array_object );
1465 _mesa_initialize_array_object(ctx, attrib->ArrayObj, 0);
1466 }
1467
1468 /**
1469 * Free/unreference the fields of 'attrib' but don't delete it (that's
1470 * done later in the calling code).
1471 * Needs to the cleanup part matching init_array_attrib_data above.
1472 */
1473 static void
1474 free_array_attrib_data(struct gl_context *ctx,
1475 struct gl_array_attrib *attrib)
1476 {
1477 /* We use a non driver array object, so don't just unref since we would
1478 * end up using the drivers DeleteArrayObject function for deletion. */
1479 _mesa_delete_array_object(ctx, attrib->ArrayObj);
1480 attrib->ArrayObj = 0;
1481 _mesa_reference_buffer_object(ctx, &attrib->ArrayBufferObj, NULL);
1482 }
1483
1484
1485 void GLAPIENTRY
1486 _mesa_PushClientAttrib(GLbitfield mask)
1487 {
1488 struct gl_attrib_node *head;
1489
1490 GET_CURRENT_CONTEXT(ctx);
1491 ASSERT_OUTSIDE_BEGIN_END(ctx);
1492
1493 if (ctx->ClientAttribStackDepth >= MAX_CLIENT_ATTRIB_STACK_DEPTH) {
1494 _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
1495 return;
1496 }
1497
1498 /* Build linked list of attribute nodes which save all attribute
1499 * groups specified by the mask.
1500 */
1501 head = NULL;
1502
1503 if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
1504 struct gl_pixelstore_attrib *attr;
1505 /* packing attribs */
1506 attr = CALLOC_STRUCT( gl_pixelstore_attrib );
1507 copy_pixelstore(ctx, attr, &ctx->Pack);
1508 save_attrib_data(&head, GL_CLIENT_PACK_BIT, attr);
1509 /* unpacking attribs */
1510 attr = CALLOC_STRUCT( gl_pixelstore_attrib );
1511 copy_pixelstore(ctx, attr, &ctx->Unpack);
1512 save_attrib_data(&head, GL_CLIENT_UNPACK_BIT, attr);
1513 }
1514
1515 if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
1516 struct gl_array_attrib *attr;
1517 attr = CALLOC_STRUCT( gl_array_attrib );
1518 init_array_attrib_data(ctx, attr);
1519 save_array_attrib(ctx, attr, &ctx->Array);
1520 save_attrib_data(&head, GL_CLIENT_VERTEX_ARRAY_BIT, attr);
1521 }
1522
1523 ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
1524 ctx->ClientAttribStackDepth++;
1525 }
1526
1527
1528
1529
1530 void GLAPIENTRY
1531 _mesa_PopClientAttrib(void)
1532 {
1533 struct gl_attrib_node *node, *next;
1534
1535 GET_CURRENT_CONTEXT(ctx);
1536 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1537
1538 if (ctx->ClientAttribStackDepth == 0) {
1539 _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
1540 return;
1541 }
1542
1543 ctx->ClientAttribStackDepth--;
1544 node = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
1545
1546 while (node) {
1547 switch (node->kind) {
1548 case GL_CLIENT_PACK_BIT:
1549 {
1550 struct gl_pixelstore_attrib *store =
1551 (struct gl_pixelstore_attrib *) node->data;
1552 copy_pixelstore(ctx, &ctx->Pack, store);
1553 _mesa_reference_buffer_object(ctx, &store->BufferObj, NULL);
1554 }
1555 ctx->NewState |= _NEW_PACKUNPACK;
1556 break;
1557 case GL_CLIENT_UNPACK_BIT:
1558 {
1559 struct gl_pixelstore_attrib *store =
1560 (struct gl_pixelstore_attrib *) node->data;
1561 copy_pixelstore(ctx, &ctx->Unpack, store);
1562 _mesa_reference_buffer_object(ctx, &store->BufferObj, NULL);
1563 }
1564 ctx->NewState |= _NEW_PACKUNPACK;
1565 break;
1566 case GL_CLIENT_VERTEX_ARRAY_BIT: {
1567 struct gl_array_attrib * attr =
1568 (struct gl_array_attrib *) node->data;
1569 restore_array_attrib(ctx, &ctx->Array, attr);
1570 free_array_attrib_data(ctx, attr);
1571 ctx->NewState |= _NEW_ARRAY;
1572 break;
1573 }
1574 default:
1575 _mesa_problem( ctx, "Bad attrib flag in PopClientAttrib");
1576 break;
1577 }
1578
1579 next = node->next;
1580 free(node->data);
1581 free(node);
1582 node = next;
1583 }
1584 }
1585
1586
1587 void
1588 _mesa_init_attrib_dispatch(struct _glapi_table *disp)
1589 {
1590 SET_PopAttrib(disp, _mesa_PopAttrib);
1591 SET_PushAttrib(disp, _mesa_PushAttrib);
1592 SET_PopClientAttrib(disp, _mesa_PopClientAttrib);
1593 SET_PushClientAttrib(disp, _mesa_PushClientAttrib);
1594 }
1595
1596
1597 /**
1598 * Free any attribute state data that might be attached to the context.
1599 */
1600 void
1601 _mesa_free_attrib_data(struct gl_context *ctx)
1602 {
1603 while (ctx->AttribStackDepth > 0) {
1604 struct gl_attrib_node *attr, *next;
1605
1606 ctx->AttribStackDepth--;
1607 attr = ctx->AttribStack[ctx->AttribStackDepth];
1608
1609 while (attr) {
1610 if (attr->kind == GL_TEXTURE_BIT) {
1611 struct texture_state *texstate = (struct texture_state*)attr->data;
1612 GLuint u, tgt;
1613 /* clear references to the saved texture objects */
1614 for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
1615 for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
1616 _mesa_reference_texobj(&texstate->SavedTexRef[u][tgt], NULL);
1617 }
1618 }
1619 _mesa_reference_shared_state(ctx, &texstate->SharedRef, NULL);
1620 }
1621 else {
1622 /* any other chunks of state that requires special handling? */
1623 }
1624
1625 next = attr->next;
1626 free(attr->data);
1627 free(attr);
1628 attr = next;
1629 }
1630 }
1631 }
1632
1633
1634 void _mesa_init_attrib( struct gl_context *ctx )
1635 {
1636 /* Renderer and client attribute stacks */
1637 ctx->AttribStackDepth = 0;
1638 ctx->ClientAttribStackDepth = 0;
1639 }