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source: vbox/trunk/src/VBox/GuestHost/OpenGL/state_tracker/state_attrib.c@ 71930

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1/* Copyright (c) 2001, Stanford University
2 * All rights reserved
3 *
4 * See the file LICENSE.txt for information on redistributing this software.
5 */
6
7#include <stdio.h>
8#include "state.h"
9#include "state/cr_statetypes.h"
10#include "state_internals.h"
11#include "cr_error.h"
12#include "cr_mem.h"
13
14/**
15 * \mainpage state_tracker
16 *
17 * \section StateTrackerIntroduction Introduction
18 *
19 * Chromium consists of all the top-level files in the cr
20 * directory. The state_tracker module basically takes care of API dispatch,
21 * and OpenGL state management.
22 *
23 *
24 */
25void crStateAttribInit (CRAttribState *a)
26{
27 int i;
28 a->attribStackDepth = 0;
29 a->accumBufferStackDepth = 0;
30 a->colorBufferStackDepth = 0;
31 a->currentStackDepth = 0;
32 a->depthBufferStackDepth = 0;
33 a->enableStackDepth = 0;
34 for ( i = 0 ; i < CR_MAX_ATTRIB_STACK_DEPTH ; i++)
35 {
36 a->enableStack[i].clip = NULL;
37 a->enableStack[i].light = NULL;
38 a->lightingStack[i].light = NULL;
39 a->transformStack[i].clip = NULL;
40 a->transformStack[i].clipPlane = NULL;
41 }
42 a->evalStackDepth = 0;
43 a->fogStackDepth = 0;
44 a->lightingStackDepth = 0;
45 a->lineStackDepth = 0;
46 a->listStackDepth = 0;
47 a->pixelModeStackDepth = 0;
48 a->pointStackDepth = 0;
49 a->polygonStackDepth = 0;
50 a->polygonStippleStackDepth = 0;
51 a->scissorStackDepth = 0;
52 a->stencilBufferStackDepth = 0;
53 a->textureStackDepth = 0;
54 a->transformStackDepth = 0;
55 a->viewportStackDepth = 0;
56}
57
58/** @todo check if NV rect needed too*/
59static void
60copy_texunit(CRTextureUnit *dest, const CRTextureUnit *src)
61{
62 dest->enabled1D = src->enabled1D;
63 dest->enabled2D = src->enabled2D;
64 dest->enabled3D = src->enabled3D;
65 dest->enabledCubeMap = src->enabledCubeMap;
66 dest->envMode = src->envMode;
67 dest->envColor = src->envColor;
68 dest->textureGen = src->textureGen;
69 dest->objSCoeff = src->objSCoeff;
70 dest->objTCoeff = src->objTCoeff;
71 dest->objRCoeff = src->objRCoeff;
72 dest->objQCoeff = src->objQCoeff;
73 dest->eyeSCoeff = src->eyeSCoeff;
74 dest->eyeTCoeff = src->eyeTCoeff;
75 dest->eyeRCoeff = src->eyeRCoeff;
76 dest->eyeQCoeff = src->eyeQCoeff;
77 dest->gen = src->gen;
78 dest->currentTexture1D = src->currentTexture1D;
79 dest->currentTexture2D = src->currentTexture2D;
80 dest->currentTexture3D = src->currentTexture3D;
81 dest->currentTextureCubeMap = src->currentTextureCubeMap;
82}
83
84static void
85copy_texobj(CRTextureObj *dest, CRTextureObj *src, GLboolean copyName)
86{
87 if (copyName)
88 {
89 dest->id = src->id;
90 dest->hwid = crStateGetTextureObjHWID(src);
91 }
92
93 dest->borderColor = src->borderColor;
94 dest->wrapS = src->wrapS;
95 dest->wrapT = src->wrapT;
96 dest->minFilter = src->minFilter;
97 dest->magFilter = src->magFilter;
98#ifdef CR_OPENGL_VERSION_1_2
99 dest->priority = src->priority;
100 dest->wrapR = src->wrapR;
101 dest->minLod = src->minLod;
102 dest->maxLod = src->maxLod;
103 dest->baseLevel = src->baseLevel;
104 dest->maxLevel = src->maxLevel;
105#endif
106#ifdef CR_EXT_texture_filter_anisotropic
107 dest->maxAnisotropy = src->maxAnisotropy;
108#endif
109}
110
111void STATE_APIENTRY crStatePushAttrib(GLbitfield mask)
112{
113 CRContext *g = GetCurrentContext();
114 CRAttribState *a = &(g->attrib);
115 CRStateBits *sb = GetCurrentBits();
116 CRAttribBits *ab = &(sb->attrib);
117 unsigned int i;
118
119 if (g->current.inBeginEnd)
120 {
121 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION, "glPushAttrib called in Begin/End");
122 return;
123 }
124
125 if (a->attribStackDepth == CR_MAX_ATTRIB_STACK_DEPTH - 1)
126 {
127 crStateError(__LINE__, __FILE__, GL_STACK_OVERFLOW, "glPushAttrib called with a full stack!" );
128 return;
129 }
130
131 FLUSH();
132
133 a->pushMaskStack[a->attribStackDepth++] = mask;
134
135 if (mask & GL_ACCUM_BUFFER_BIT)
136 {
137 a->accumBufferStack[a->accumBufferStackDepth].accumClearValue = g->buffer.accumClearValue;
138 a->accumBufferStackDepth++;
139 }
140 if (mask & GL_COLOR_BUFFER_BIT)
141 {
142 a->colorBufferStack[a->colorBufferStackDepth].alphaTest = g->buffer.alphaTest;
143 a->colorBufferStack[a->colorBufferStackDepth].alphaTestFunc = g->buffer.alphaTestFunc;
144 a->colorBufferStack[a->colorBufferStackDepth].alphaTestRef = g->buffer.alphaTestRef;
145 a->colorBufferStack[a->colorBufferStackDepth].blend = g->buffer.blend;
146 a->colorBufferStack[a->colorBufferStackDepth].blendSrcRGB = g->buffer.blendSrcRGB;
147 a->colorBufferStack[a->colorBufferStackDepth].blendDstRGB = g->buffer.blendDstRGB;
148#if defined(CR_EXT_blend_func_separate)
149 a->colorBufferStack[a->colorBufferStackDepth].blendSrcA = g->buffer.blendSrcA;
150 a->colorBufferStack[a->colorBufferStackDepth].blendDstA = g->buffer.blendDstA;
151#endif
152#ifdef CR_EXT_blend_color
153 a->colorBufferStack[a->colorBufferStackDepth].blendColor = g->buffer.blendColor;
154#endif
155#if defined(CR_EXT_blend_minmax) || defined(CR_EXT_blend_subtract) || defined(CR_EXT_blend_logic_op)
156 a->colorBufferStack[a->colorBufferStackDepth].blendEquation = g->buffer.blendEquation;
157#endif
158 a->colorBufferStack[a->colorBufferStackDepth].dither = g->buffer.dither;
159 a->colorBufferStack[a->colorBufferStackDepth].drawBuffer = g->buffer.drawBuffer;
160 a->colorBufferStack[a->colorBufferStackDepth].logicOp = g->buffer.logicOp;
161 a->colorBufferStack[a->colorBufferStackDepth].indexLogicOp = g->buffer.indexLogicOp;
162 a->colorBufferStack[a->colorBufferStackDepth].logicOpMode = g->buffer.logicOpMode;
163 a->colorBufferStack[a->colorBufferStackDepth].colorClearValue = g->buffer.colorClearValue;
164 a->colorBufferStack[a->colorBufferStackDepth].indexClearValue = g->buffer.indexClearValue;
165 a->colorBufferStack[a->colorBufferStackDepth].colorWriteMask = g->buffer.colorWriteMask;
166 a->colorBufferStack[a->colorBufferStackDepth].indexWriteMask = g->buffer.indexWriteMask;
167 a->colorBufferStackDepth++;
168 }
169 if (mask & GL_CURRENT_BIT)
170 {
171 for (i = 0 ; i < CR_MAX_VERTEX_ATTRIBS ; i++)
172 {
173 COPY_4V(a->currentStack[a->currentStackDepth].attrib[i] , g->current.vertexAttrib[i]);
174 COPY_4V(a->currentStack[a->currentStackDepth].rasterAttrib[i] , g->current.rasterAttrib[i]);
175 }
176 a->currentStack[a->currentStackDepth].rasterValid = g->current.rasterValid;
177 a->currentStack[a->currentStackDepth].edgeFlag = g->current.edgeFlag;
178 a->currentStack[a->currentStackDepth].colorIndex = g->current.colorIndex;
179 a->currentStackDepth++;
180 }
181 if (mask & GL_DEPTH_BUFFER_BIT)
182 {
183 a->depthBufferStack[a->depthBufferStackDepth].depthTest = g->buffer.depthTest;
184 a->depthBufferStack[a->depthBufferStackDepth].depthFunc = g->buffer.depthFunc;
185 a->depthBufferStack[a->depthBufferStackDepth].depthClearValue = g->buffer.depthClearValue;
186 a->depthBufferStack[a->depthBufferStackDepth].depthMask = g->buffer.depthMask;
187 a->depthBufferStackDepth++;
188 }
189 if (mask & GL_ENABLE_BIT)
190 {
191 if (a->enableStack[a->enableStackDepth].clip == NULL)
192 {
193 a->enableStack[a->enableStackDepth].clip = (GLboolean *) crCalloc( g->limits.maxClipPlanes * sizeof( GLboolean ));
194 }
195 if (a->enableStack[a->enableStackDepth].light == NULL)
196 {
197 a->enableStack[a->enableStackDepth].light = (GLboolean *) crCalloc( g->limits.maxLights * sizeof( GLboolean ));
198 }
199 a->enableStack[a->enableStackDepth].alphaTest = g->buffer.alphaTest;
200 a->enableStack[a->enableStackDepth].autoNormal = g->eval.autoNormal;
201 a->enableStack[a->enableStackDepth].blend = g->buffer.blend;
202 for (i = 0 ; i < g->limits.maxClipPlanes ; i++)
203 {
204 a->enableStack[a->enableStackDepth].clip[i] = g->transform.clip[i];
205 }
206 a->enableStack[a->enableStackDepth].colorMaterial = g->lighting.colorMaterial;
207 a->enableStack[a->enableStackDepth].cullFace = g->polygon.cullFace;
208 a->enableStack[a->enableStackDepth].depthTest = g->buffer.depthTest;
209 a->enableStack[a->enableStackDepth].dither = g->buffer.dither;
210 a->enableStack[a->enableStackDepth].fog = g->fog.enable;
211 for (i = 0 ; i < g->limits.maxLights ; i++)
212 {
213 a->enableStack[a->enableStackDepth].light[i] = g->lighting.light[i].enable;
214 }
215 a->enableStack[a->enableStackDepth].lighting = g->lighting.lighting;
216 a->enableStack[a->enableStackDepth].lineSmooth = g->line.lineSmooth;
217 a->enableStack[a->enableStackDepth].lineStipple = g->line.lineStipple;
218 a->enableStack[a->enableStackDepth].logicOp = g->buffer.logicOp;
219 a->enableStack[a->enableStackDepth].indexLogicOp = g->buffer.indexLogicOp;
220 for (i = 0 ; i < GLEVAL_TOT ; i++)
221 {
222 a->enableStack[a->enableStackDepth].map1[i] = g->eval.enable1D[i];
223 a->enableStack[a->enableStackDepth].map2[i] = g->eval.enable2D[i];
224 }
225 a->enableStack[a->enableStackDepth].normalize = g->transform.normalize;
226 a->enableStack[a->enableStackDepth].pointSmooth = g->point.pointSmooth;
227#if CR_ARB_point_sprite
228 a->enableStack[a->enableStackDepth].pointSprite = g->point.pointSprite;
229 for (i = 0; i < CR_MAX_TEXTURE_UNITS; i++)
230 a->enableStack[a->enableStackDepth].coordReplacement[i] = g->point.coordReplacement[i];
231#endif
232 a->enableStack[a->enableStackDepth].polygonOffsetLine = g->polygon.polygonOffsetLine;
233 a->enableStack[a->enableStackDepth].polygonOffsetFill = g->polygon.polygonOffsetFill;
234 a->enableStack[a->enableStackDepth].polygonOffsetPoint = g->polygon.polygonOffsetPoint;
235 a->enableStack[a->enableStackDepth].polygonSmooth = g->polygon.polygonSmooth;
236 a->enableStack[a->enableStackDepth].polygonStipple = g->polygon.polygonStipple;
237#ifdef CR_OPENGL_VERSION_1_2
238 a->enableStack[a->enableStackDepth].rescaleNormals = g->transform.rescaleNormals;
239#endif
240 a->enableStack[a->enableStackDepth].scissorTest = g->viewport.scissorTest;
241 a->enableStack[a->enableStackDepth].stencilTest = g->stencil.stencilTest;
242 for (i = 0 ; i < g->limits.maxTextureUnits; i++)
243 {
244 a->enableStack[a->enableStackDepth].texture1D[i] = g->texture.unit[i].enabled1D;
245 a->enableStack[a->enableStackDepth].texture2D[i] = g->texture.unit[i].enabled2D;
246#ifdef CR_OPENGL_VERSION_1_2
247 a->enableStack[a->enableStackDepth].texture3D[i] = g->texture.unit[i].enabled3D;
248#endif
249#ifdef CR_ARB_texture_cube_map
250 a->enableStack[a->enableStackDepth].textureCubeMap[i] = g->texture.unit[i].enabledCubeMap;
251#endif
252#ifdef CR_NV_texture_rectangle
253 a->enableStack[a->enableStackDepth].textureRect[i] = g->texture.unit[i].enabledRect;
254#endif
255 a->enableStack[a->enableStackDepth].textureGenS[i] = g->texture.unit[i].textureGen.s;
256 a->enableStack[a->enableStackDepth].textureGenT[i] = g->texture.unit[i].textureGen.t;
257 a->enableStack[a->enableStackDepth].textureGenR[i] = g->texture.unit[i].textureGen.r;
258 a->enableStack[a->enableStackDepth].textureGenQ[i] = g->texture.unit[i].textureGen.q;
259 }
260 a->enableStackDepth++;
261 }
262 if (mask & GL_EVAL_BIT)
263 {
264 for (i = 0 ; i < GLEVAL_TOT ; i++)
265 {
266 int size1 = g->eval.eval1D[i].order * gleval_sizes[i] *
267 sizeof (GLfloat);
268 int size2 = g->eval.eval2D[i].uorder * g->eval.eval2D[i].vorder *
269 gleval_sizes[i] * sizeof (GLfloat);
270 a->evalStack[a->evalStackDepth].enable1D[i] = g->eval.enable1D[i];
271 a->evalStack[a->evalStackDepth].enable2D[i] = g->eval.enable2D[i];
272 a->evalStack[a->evalStackDepth].eval1D[i].u1 = g->eval.eval1D[i].u1;
273 a->evalStack[a->evalStackDepth].eval1D[i].u2 = g->eval.eval1D[i].u2;
274 a->evalStack[a->evalStackDepth].eval1D[i].order = g->eval.eval1D[i].order;
275 a->evalStack[a->evalStackDepth].eval1D[i].coeff = (GLfloat*)crCalloc(size1);
276 crMemcpy(a->evalStack[a->evalStackDepth].eval1D[i].coeff, g->eval.eval1D[i].coeff, size1);
277 a->evalStack[a->evalStackDepth].eval2D[i].u1 = g->eval.eval2D[i].u1;
278 a->evalStack[a->evalStackDepth].eval2D[i].u2 = g->eval.eval2D[i].u2;
279 a->evalStack[a->evalStackDepth].eval2D[i].v1 = g->eval.eval2D[i].v1;
280 a->evalStack[a->evalStackDepth].eval2D[i].v2 = g->eval.eval2D[i].v2;
281 a->evalStack[a->evalStackDepth].eval2D[i].uorder = g->eval.eval2D[i].uorder;
282 a->evalStack[a->evalStackDepth].eval2D[i].vorder = g->eval.eval2D[i].vorder;
283 a->evalStack[a->evalStackDepth].eval2D[i].coeff = (GLfloat*)crCalloc(size2);
284 crMemcpy(a->evalStack[a->evalStackDepth].eval2D[i].coeff, g->eval.eval2D[i].coeff, size2);
285 }
286 a->evalStack[a->evalStackDepth].autoNormal = g->eval.autoNormal;
287 a->evalStack[a->evalStackDepth].un1D = g->eval.un1D;
288 a->evalStack[a->evalStackDepth].u11D = g->eval.u11D;
289 a->evalStack[a->evalStackDepth].u21D = g->eval.u21D;
290 a->evalStack[a->evalStackDepth].un2D = g->eval.un2D;
291 a->evalStack[a->evalStackDepth].u12D = g->eval.u12D;
292 a->evalStack[a->evalStackDepth].u22D = g->eval.u22D;
293 a->evalStack[a->evalStackDepth].vn2D = g->eval.vn2D;
294 a->evalStack[a->evalStackDepth].v12D = g->eval.v12D;
295 a->evalStack[a->evalStackDepth].v22D = g->eval.v22D;
296 a->evalStackDepth++;
297 }
298 if (mask & GL_FOG_BIT)
299 {
300 a->fogStack[a->fogStackDepth].enable = g->fog.enable;
301 a->fogStack[a->fogStackDepth].color = g->fog.color;
302 a->fogStack[a->fogStackDepth].density = g->fog.density;
303 a->fogStack[a->fogStackDepth].start = g->fog.start;
304 a->fogStack[a->fogStackDepth].end = g->fog.end;
305 a->fogStack[a->fogStackDepth].index = g->fog.index;
306 a->fogStack[a->fogStackDepth].mode = g->fog.mode;
307 a->fogStackDepth++;
308 }
309 if (mask & GL_HINT_BIT)
310 {
311 a->hintStack[a->hintStackDepth].perspectiveCorrection = g->hint.perspectiveCorrection;
312 a->hintStack[a->hintStackDepth].pointSmooth = g->hint.pointSmooth;
313 a->hintStack[a->hintStackDepth].lineSmooth = g->hint.lineSmooth;
314 a->hintStack[a->hintStackDepth].polygonSmooth = g->hint.polygonSmooth;
315 a->hintStack[a->hintStackDepth].fog = g->hint.fog;
316#ifdef CR_EXT_clip_volume_hint
317 a->hintStack[a->hintStackDepth].clipVolumeClipping = g->hint.clipVolumeClipping;
318#endif
319#ifdef CR_ARB_texture_compression
320 a->hintStack[a->hintStackDepth].textureCompression = g->hint.textureCompression;
321#endif
322#ifdef CR_SGIS_generate_mipmap
323 a->hintStack[a->hintStackDepth].generateMipmap = g->hint.generateMipmap;
324#endif
325 a->hintStackDepth++;
326 }
327 if (mask & GL_LIGHTING_BIT)
328 {
329 if (a->lightingStack[a->lightingStackDepth].light == NULL)
330 {
331 a->lightingStack[a->lightingStackDepth].light = (CRLight *) crCalloc( g->limits.maxLights * sizeof( CRLight ));
332 }
333 a->lightingStack[a->lightingStackDepth].lightModelAmbient = g->lighting.lightModelAmbient;
334 a->lightingStack[a->lightingStackDepth].lightModelLocalViewer = g->lighting.lightModelLocalViewer;
335 a->lightingStack[a->lightingStackDepth].lightModelTwoSide = g->lighting.lightModelTwoSide;
336#if defined(CR_EXT_separate_specular_color) || defined(CR_OPENGL_VERSION_1_2)
337 a->lightingStack[a->lightingStackDepth].lightModelColorControlEXT = g->lighting.lightModelColorControlEXT;
338#endif
339 a->lightingStack[a->lightingStackDepth].lighting = g->lighting.lighting;
340 a->lightingStack[a->lightingStackDepth].colorMaterial = g->lighting.colorMaterial;
341 a->lightingStack[a->lightingStackDepth].colorMaterialMode = g->lighting.colorMaterialMode;
342 a->lightingStack[a->lightingStackDepth].colorMaterialFace = g->lighting.colorMaterialFace;
343 for (i = 0 ; i < g->limits.maxLights; i++)
344 {
345 a->lightingStack[a->lightingStackDepth].light[i].enable = g->lighting.light[i].enable;
346 a->lightingStack[a->lightingStackDepth].light[i].ambient = g->lighting.light[i].ambient;
347 a->lightingStack[a->lightingStackDepth].light[i].diffuse = g->lighting.light[i].diffuse;
348 a->lightingStack[a->lightingStackDepth].light[i].specular = g->lighting.light[i].specular;
349 a->lightingStack[a->lightingStackDepth].light[i].spotDirection = g->lighting.light[i].spotDirection;
350 a->lightingStack[a->lightingStackDepth].light[i].position = g->lighting.light[i].position;
351 a->lightingStack[a->lightingStackDepth].light[i].spotExponent = g->lighting.light[i].spotExponent;
352 a->lightingStack[a->lightingStackDepth].light[i].spotCutoff = g->lighting.light[i].spotCutoff;
353 a->lightingStack[a->lightingStackDepth].light[i].constantAttenuation = g->lighting.light[i].constantAttenuation;
354 a->lightingStack[a->lightingStackDepth].light[i].linearAttenuation = g->lighting.light[i].linearAttenuation;
355 a->lightingStack[a->lightingStackDepth].light[i].quadraticAttenuation = g->lighting.light[i].quadraticAttenuation;
356 }
357 for (i = 0 ; i < 2 ; i++)
358 {
359 a->lightingStack[a->lightingStackDepth].ambient[i] = g->lighting.ambient[i];
360 a->lightingStack[a->lightingStackDepth].diffuse[i] = g->lighting.diffuse[i];
361 a->lightingStack[a->lightingStackDepth].specular[i] = g->lighting.specular[i];
362 a->lightingStack[a->lightingStackDepth].emission[i] = g->lighting.emission[i];
363 a->lightingStack[a->lightingStackDepth].shininess[i] = g->lighting.shininess[i];
364 a->lightingStack[a->lightingStackDepth].indexes[i][0] = g->lighting.indexes[i][0];
365 a->lightingStack[a->lightingStackDepth].indexes[i][1] = g->lighting.indexes[i][1];
366 a->lightingStack[a->lightingStackDepth].indexes[i][2] = g->lighting.indexes[i][2];
367 }
368 a->lightingStack[a->lightingStackDepth].shadeModel = g->lighting.shadeModel;
369 a->lightingStackDepth++;
370 }
371 if (mask & GL_LINE_BIT)
372 {
373 a->lineStack[a->lineStackDepth].lineSmooth = g->line.lineSmooth;
374 a->lineStack[a->lineStackDepth].lineStipple = g->line.lineStipple;
375 a->lineStack[a->lineStackDepth].pattern = g->line.pattern;
376 a->lineStack[a->lineStackDepth].repeat = g->line.repeat;
377 a->lineStack[a->lineStackDepth].width = g->line.width;
378 a->lineStackDepth++;
379 }
380 if (mask & GL_LIST_BIT)
381 {
382 a->listStack[a->listStackDepth].base = g->lists.base;
383 a->listStackDepth++;
384 }
385 if (mask & GL_PIXEL_MODE_BIT)
386 {
387 a->pixelModeStack[a->pixelModeStackDepth].bias = g->pixel.bias;
388 a->pixelModeStack[a->pixelModeStackDepth].scale = g->pixel.scale;
389 a->pixelModeStack[a->pixelModeStackDepth].indexOffset = g->pixel.indexOffset;
390 a->pixelModeStack[a->pixelModeStackDepth].indexShift = g->pixel.indexShift;
391 a->pixelModeStack[a->pixelModeStackDepth].mapColor = g->pixel.mapColor;
392 a->pixelModeStack[a->pixelModeStackDepth].mapStencil = g->pixel.mapStencil;
393 a->pixelModeStack[a->pixelModeStackDepth].xZoom = g->pixel.xZoom;
394 a->pixelModeStack[a->pixelModeStackDepth].yZoom = g->pixel.yZoom;
395 a->pixelModeStack[a->pixelModeStackDepth].readBuffer = g->buffer.readBuffer;
396 a->pixelModeStackDepth++;
397 }
398 if (mask & GL_POINT_BIT)
399 {
400 a->pointStack[a->pointStackDepth].pointSmooth = g->point.pointSmooth;
401#if CR_ARB_point_sprite
402 a->pointStack[a->pointStackDepth].pointSprite = g->point.pointSprite;
403 for (i = 0; i < CR_MAX_TEXTURE_UNITS; i++)
404 a->pointStack[a->enableStackDepth].coordReplacement[i] = g->point.coordReplacement[i];
405#endif
406 a->pointStack[a->pointStackDepth].pointSize = g->point.pointSize;
407 a->pointStackDepth++;
408 }
409 if (mask & GL_POLYGON_BIT)
410 {
411 a->polygonStack[a->polygonStackDepth].cullFace = g->polygon.cullFace;
412 a->polygonStack[a->polygonStackDepth].cullFaceMode = g->polygon.cullFaceMode;
413 a->polygonStack[a->polygonStackDepth].frontFace = g->polygon.frontFace;
414 a->polygonStack[a->polygonStackDepth].frontMode = g->polygon.frontMode;
415 a->polygonStack[a->polygonStackDepth].backMode = g->polygon.backMode;
416 a->polygonStack[a->polygonStackDepth].polygonSmooth = g->polygon.polygonSmooth;
417 a->polygonStack[a->polygonStackDepth].polygonStipple = g->polygon.polygonStipple;
418 a->polygonStack[a->polygonStackDepth].polygonOffsetFill = g->polygon.polygonOffsetFill;
419 a->polygonStack[a->polygonStackDepth].polygonOffsetLine = g->polygon.polygonOffsetLine;
420 a->polygonStack[a->polygonStackDepth].polygonOffsetPoint = g->polygon.polygonOffsetPoint;
421 a->polygonStack[a->polygonStackDepth].offsetFactor = g->polygon.offsetFactor;
422 a->polygonStack[a->polygonStackDepth].offsetUnits = g->polygon.offsetUnits;
423 a->polygonStackDepth++;
424 }
425 if (mask & GL_POLYGON_STIPPLE_BIT)
426 {
427 crMemcpy( a->polygonStippleStack[a->polygonStippleStackDepth].pattern, g->polygon.stipple, 32*sizeof(GLint) );
428 a->polygonStippleStackDepth++;
429 }
430 if (mask & GL_SCISSOR_BIT)
431 {
432 a->scissorStack[a->scissorStackDepth].scissorTest = g->viewport.scissorTest;
433 a->scissorStack[a->scissorStackDepth].scissorX = g->viewport.scissorX;
434 a->scissorStack[a->scissorStackDepth].scissorY = g->viewport.scissorY;
435 a->scissorStack[a->scissorStackDepth].scissorW = g->viewport.scissorW;
436 a->scissorStack[a->scissorStackDepth].scissorH = g->viewport.scissorH;
437 a->scissorStackDepth++;
438 }
439 if (mask & GL_STENCIL_BUFFER_BIT)
440 {
441 a->stencilBufferStack[a->stencilBufferStackDepth].stencilTest = g->stencil.stencilTest;
442 a->stencilBufferStack[a->stencilBufferStackDepth].clearValue = g->stencil.clearValue;
443 a->stencilBufferStack[a->stencilBufferStackDepth].writeMask = g->stencil.writeMask;
444 for (i = 0; i < CRSTATE_STENCIL_BUFFER_COUNT; ++i)
445 {
446 a->stencilBufferStack[a->stencilBufferStackDepth].buffers[i].func = g->stencil.buffers[i].func;
447 a->stencilBufferStack[a->stencilBufferStackDepth].buffers[i].mask = g->stencil.buffers[i].mask;
448 a->stencilBufferStack[a->stencilBufferStackDepth].buffers[i].ref = g->stencil.buffers[i].ref;
449 a->stencilBufferStack[a->stencilBufferStackDepth].buffers[i].fail = g->stencil.buffers[i].fail;
450 a->stencilBufferStack[a->stencilBufferStackDepth].buffers[i].passDepthFail = g->stencil.buffers[i].passDepthFail;
451 a->stencilBufferStack[a->stencilBufferStackDepth].buffers[i].passDepthPass = g->stencil.buffers[i].passDepthPass;
452 }
453 a->stencilBufferStackDepth++;
454 }
455 if (mask & GL_TEXTURE_BIT)
456 {
457 CRTextureStack *tState = a->textureStack + a->textureStackDepth;
458 tState->curTextureUnit = g->texture.curTextureUnit;
459 for (i = 0 ; i < g->limits.maxTextureUnits ; i++)
460 {
461 /* per-unit state */
462 copy_texunit(&tState->unit[i], &g->texture.unit[i]);
463 /* texture object state */
464 copy_texobj(&tState->unit[i].Saved1D, g->texture.unit[i].currentTexture1D, GL_TRUE);
465 copy_texobj(&tState->unit[i].Saved2D, g->texture.unit[i].currentTexture2D, GL_TRUE);
466#ifdef CR_OPENGL_VERSION_1_2
467 copy_texobj(&tState->unit[i].Saved3D, g->texture.unit[i].currentTexture3D, GL_TRUE);
468#endif
469#ifdef CR_ARB_texture_cube_map
470 copy_texobj(&tState->unit[i].SavedCubeMap, g->texture.unit[i].currentTextureCubeMap, GL_TRUE);
471#endif
472#ifdef CR_NV_texture_rectangle
473 copy_texobj(&tState->unit[i].SavedRect, g->texture.unit[i].currentTextureRect, GL_TRUE);
474#endif
475 }
476 a->textureStackDepth++;
477 }
478 if (mask & GL_TRANSFORM_BIT)
479 {
480 if (a->transformStack[a->transformStackDepth].clip == NULL)
481 {
482 a->transformStack[a->transformStackDepth].clip = (GLboolean *) crCalloc( g->limits.maxClipPlanes * sizeof( GLboolean ));
483 }
484 if (a->transformStack[a->transformStackDepth].clipPlane == NULL)
485 {
486 a->transformStack[a->transformStackDepth].clipPlane = (GLvectord *) crCalloc( g->limits.maxClipPlanes * sizeof( GLvectord ));
487 }
488 a->transformStack[a->transformStackDepth].matrixMode = g->transform.matrixMode;
489 for (i = 0 ; i < g->limits.maxClipPlanes ; i++)
490 {
491 a->transformStack[a->transformStackDepth].clip[i] = g->transform.clip[i];
492 a->transformStack[a->transformStackDepth].clipPlane[i] = g->transform.clipPlane[i];
493 }
494 a->transformStack[a->transformStackDepth].normalize = g->transform.normalize;
495#ifdef CR_OPENGL_VERSION_1_2
496 a->transformStack[a->transformStackDepth].rescaleNormals = g->transform.rescaleNormals;
497#endif
498 a->transformStackDepth++;
499 }
500 if (mask & GL_VIEWPORT_BIT)
501 {
502 a->viewportStack[a->viewportStackDepth].viewportX = g->viewport.viewportX;
503 a->viewportStack[a->viewportStackDepth].viewportY = g->viewport.viewportY;
504 a->viewportStack[a->viewportStackDepth].viewportW = g->viewport.viewportW;
505 a->viewportStack[a->viewportStackDepth].viewportH = g->viewport.viewportH;
506 a->viewportStack[a->viewportStackDepth].nearClip = g->viewport.nearClip;
507 a->viewportStack[a->viewportStackDepth].farClip = g->viewport.farClip;
508 a->viewportStackDepth++;
509 }
510
511 DIRTY(ab->dirty, g->neg_bitid);
512}
513
514void STATE_APIENTRY crStatePopAttrib(void)
515{
516 CRContext *g = GetCurrentContext();
517 CRAttribState *a = &(g->attrib);
518 CRStateBits *sb = GetCurrentBits();
519 CRAttribBits *ab = &(sb->attrib);
520 CRbitvalue mask;
521 unsigned int i;
522
523 if (g->current.inBeginEnd)
524 {
525 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION, "glPopAttrib called in Begin/End");
526 return;
527 }
528
529 if (a->attribStackDepth == 0)
530 {
531 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty stack!" );
532 return;
533 }
534
535 FLUSH();
536
537 mask = a->pushMaskStack[--a->attribStackDepth];
538
539 if (mask & GL_ACCUM_BUFFER_BIT)
540 {
541 if (a->accumBufferStackDepth == 0)
542 {
543 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty accum buffer stack!" );
544 return;
545 }
546 a->accumBufferStackDepth--;
547 g->buffer.accumClearValue = a->accumBufferStack[a->accumBufferStackDepth].accumClearValue;
548 DIRTY(sb->buffer.dirty, g->neg_bitid);
549 DIRTY(sb->buffer.clearAccum, g->neg_bitid);
550 }
551 if (mask & GL_COLOR_BUFFER_BIT)
552 {
553 if (a->colorBufferStackDepth == 0)
554 {
555 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty color buffer stack!" );
556 return;
557 }
558 a->colorBufferStackDepth--;
559 g->buffer.alphaTest = a->colorBufferStack[a->colorBufferStackDepth].alphaTest;
560 g->buffer.alphaTestFunc = a->colorBufferStack[a->colorBufferStackDepth].alphaTestFunc;
561 g->buffer.alphaTestRef = a->colorBufferStack[a->colorBufferStackDepth].alphaTestRef;
562 g->buffer.blend = a->colorBufferStack[a->colorBufferStackDepth].blend;
563 g->buffer.blendSrcRGB = a->colorBufferStack[a->colorBufferStackDepth].blendSrcRGB;
564 g->buffer.blendDstRGB = a->colorBufferStack[a->colorBufferStackDepth].blendDstRGB;
565#if defined(CR_EXT_blend_func_separate)
566 g->buffer.blendSrcA = a->colorBufferStack[a->colorBufferStackDepth].blendSrcA;
567 g->buffer.blendDstA = a->colorBufferStack[a->colorBufferStackDepth].blendDstA;
568#endif
569#ifdef CR_EXT_blend_color
570 g->buffer.blendColor = a->colorBufferStack[a->colorBufferStackDepth].blendColor;
571#endif
572#if defined(CR_EXT_blend_minmax) || defined(CR_EXT_blend_subtract) || defined(CR_EXT_blend_logic_op)
573 g->buffer.blendEquation = a->colorBufferStack[a->colorBufferStackDepth].blendEquation;
574#endif
575 g->buffer.dither = a->colorBufferStack[a->colorBufferStackDepth].dither;
576 g->buffer.drawBuffer = a->colorBufferStack[a->colorBufferStackDepth].drawBuffer;
577 g->buffer.logicOp = a->colorBufferStack[a->colorBufferStackDepth].logicOp;
578 g->buffer.indexLogicOp = a->colorBufferStack[a->colorBufferStackDepth].indexLogicOp;
579 g->buffer.logicOpMode = a->colorBufferStack[a->colorBufferStackDepth].logicOpMode;
580 g->buffer.colorClearValue = a->colorBufferStack[a->colorBufferStackDepth].colorClearValue;
581 g->buffer.indexClearValue = a->colorBufferStack[a->colorBufferStackDepth].indexClearValue;
582 g->buffer.colorWriteMask = a->colorBufferStack[a->colorBufferStackDepth].colorWriteMask;
583 g->buffer.indexWriteMask = a->colorBufferStack[a->colorBufferStackDepth].indexWriteMask;
584 DIRTY(sb->buffer.dirty, g->neg_bitid);
585 DIRTY(sb->buffer.enable, g->neg_bitid);
586 DIRTY(sb->buffer.alphaFunc, g->neg_bitid);
587 DIRTY(sb->buffer.blendFunc, g->neg_bitid);
588#ifdef CR_EXT_blend_color
589 DIRTY(sb->buffer.blendColor, g->neg_bitid);
590#endif
591#if defined(CR_EXT_blend_minmax) || defined(CR_EXT_blend_subtract) || defined(CR_EXT_blend_logic_op)
592 DIRTY(sb->buffer.blendEquation, g->neg_bitid);
593#endif
594 DIRTY(sb->buffer.drawBuffer, g->neg_bitid);
595 DIRTY(sb->buffer.logicOp, g->neg_bitid);
596 DIRTY(sb->buffer.indexLogicOp, g->neg_bitid);
597 DIRTY(sb->buffer.clearColor, g->neg_bitid);
598 DIRTY(sb->buffer.clearIndex, g->neg_bitid);
599 DIRTY(sb->buffer.colorWriteMask, g->neg_bitid);
600 DIRTY(sb->buffer.indexMask, g->neg_bitid);
601 }
602 if (mask & GL_CURRENT_BIT)
603 {
604 if (a->currentStackDepth == 0)
605 {
606 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty current stack!" );
607 return;
608 }
609 a->currentStackDepth--;
610 for (i = 0 ; i < CR_MAX_VERTEX_ATTRIBS ; i++)
611 {
612 COPY_4V(g->current.vertexAttrib[i], a->currentStack[a->currentStackDepth].attrib[i]);
613 COPY_4V(g->current.rasterAttrib[i], a->currentStack[a->currentStackDepth].rasterAttrib[i]);
614 DIRTY(sb->current.vertexAttrib[i], g->neg_bitid);
615 }
616 g->current.rasterValid = a->currentStack[a->currentStackDepth].rasterValid;
617 g->current.edgeFlag = a->currentStack[a->currentStackDepth].edgeFlag;
618 g->current.colorIndex = a->currentStack[a->currentStackDepth].colorIndex;
619 DIRTY(sb->current.dirty, g->neg_bitid);
620 DIRTY(sb->current.edgeFlag, g->neg_bitid);
621 DIRTY(sb->current.colorIndex, g->neg_bitid);
622 DIRTY(sb->current.rasterPos, g->neg_bitid);
623 }
624 if (mask & GL_DEPTH_BUFFER_BIT)
625 {
626 if (a->depthBufferStackDepth == 0)
627 {
628 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty depth buffer stack!" );
629 return;
630 }
631 a->depthBufferStackDepth--;
632 g->buffer.depthTest = a->depthBufferStack[a->depthBufferStackDepth].depthTest;
633 g->buffer.depthFunc = a->depthBufferStack[a->depthBufferStackDepth].depthFunc;
634 g->buffer.depthClearValue = a->depthBufferStack[a->depthBufferStackDepth].depthClearValue;
635 g->buffer.depthMask = a->depthBufferStack[a->depthBufferStackDepth].depthMask;
636 DIRTY(sb->buffer.dirty, g->neg_bitid);
637 DIRTY(sb->buffer.enable, g->neg_bitid);
638 DIRTY(sb->buffer.depthFunc, g->neg_bitid);
639 DIRTY(sb->buffer.clearDepth, g->neg_bitid);
640 DIRTY(sb->buffer.depthMask, g->neg_bitid);
641 }
642 if (mask & GL_ENABLE_BIT)
643 {
644 if (a->enableStackDepth == 0)
645 {
646 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty enable stack!" );
647 return;
648 }
649 a->enableStackDepth--;
650 g->buffer.alphaTest = a->enableStack[a->enableStackDepth].alphaTest;
651 g->eval.autoNormal = a->enableStack[a->enableStackDepth].autoNormal;
652 g->buffer.blend = a->enableStack[a->enableStackDepth].blend;
653 for (i = 0 ; i < g->limits.maxClipPlanes ; i++)
654 {
655 g->transform.clip[i] = a->enableStack[a->enableStackDepth].clip[i];
656 }
657 g->lighting.colorMaterial = a->enableStack[a->enableStackDepth].colorMaterial;
658 g->polygon.cullFace = a->enableStack[a->enableStackDepth].cullFace;
659 g->buffer.depthTest = a->enableStack[a->enableStackDepth].depthTest;
660 g->buffer.dither = a->enableStack[a->enableStackDepth].dither;
661 g->fog.enable = a->enableStack[a->enableStackDepth].fog;
662 for (i = 0 ; i < g->limits.maxLights ; i++)
663 {
664 g->lighting.light[i].enable = a->enableStack[a->enableStackDepth].light[i];
665 }
666 g->lighting.lighting = a->enableStack[a->enableStackDepth].lighting;
667 g->line.lineSmooth = a->enableStack[a->enableStackDepth].lineSmooth;
668 g->line.lineStipple = a->enableStack[a->enableStackDepth].lineStipple;
669 g->buffer.logicOp = a->enableStack[a->enableStackDepth].logicOp;
670 g->buffer.indexLogicOp = a->enableStack[a->enableStackDepth].indexLogicOp;
671 for (i = 0 ; i < GLEVAL_TOT ; i++)
672 {
673 g->eval.enable1D[i] = a->enableStack[a->enableStackDepth].map1[i];
674 g->eval.enable2D[i] = a->enableStack[a->enableStackDepth].map2[i];
675 }
676 g->transform.normalize = a->enableStack[a->enableStackDepth].normalize;
677 g->point.pointSmooth = a->enableStack[a->enableStackDepth].pointSmooth;
678#ifdef CR_ARB_point_sprite
679 g->point.pointSprite = a->enableStack[a->enableStackDepth].pointSprite;
680 for (i = 0; i < CR_MAX_TEXTURE_UNITS; i++)
681 g->point.coordReplacement[i] = a->enableStack[a->enableStackDepth].coordReplacement[i];
682#endif
683 g->polygon.polygonOffsetLine = a->enableStack[a->enableStackDepth].polygonOffsetLine;
684 g->polygon.polygonOffsetFill = a->enableStack[a->enableStackDepth].polygonOffsetFill;
685 g->polygon.polygonOffsetPoint = a->enableStack[a->enableStackDepth].polygonOffsetPoint;
686 g->polygon.polygonSmooth = a->enableStack[a->enableStackDepth].polygonSmooth;
687 g->polygon.polygonStipple = a->enableStack[a->enableStackDepth].polygonStipple;
688#ifdef CR_OPENGL_VERSION_1_2
689 g->transform.rescaleNormals = a->enableStack[a->enableStackDepth].rescaleNormals;
690#endif
691 g->viewport.scissorTest = a->enableStack[a->enableStackDepth].scissorTest;
692 g->stencil.stencilTest = a->enableStack[a->enableStackDepth].stencilTest;
693 for (i = 0 ; i < g->limits.maxTextureUnits; i++)
694 {
695 g->texture.unit[i].enabled1D = a->enableStack[a->enableStackDepth].texture1D[i];
696 g->texture.unit[i].enabled2D = a->enableStack[a->enableStackDepth].texture2D[i];
697#ifdef CR_OPENGL_VERSION_1_2
698 g->texture.unit[i].enabled3D = a->enableStack[a->enableStackDepth].texture3D[i];
699#endif
700#ifdef CR_ARB_texture_cube_map
701 g->texture.unit[i].enabledCubeMap = a->enableStack[a->enableStackDepth].textureCubeMap[i];
702#endif
703#ifdef CR_NV_texture_rectangle
704 g->texture.unit[i].enabledRect = a->enableStack[a->enableStackDepth].textureRect[i];
705#endif
706 g->texture.unit[i].textureGen.s = a->enableStack[a->enableStackDepth].textureGenS[i];
707 g->texture.unit[i].textureGen.t = a->enableStack[a->enableStackDepth].textureGenT[i];
708 g->texture.unit[i].textureGen.r = a->enableStack[a->enableStackDepth].textureGenR[i];
709 g->texture.unit[i].textureGen.q = a->enableStack[a->enableStackDepth].textureGenQ[i];
710 }
711 DIRTY(sb->buffer.dirty, g->neg_bitid);
712 DIRTY(sb->eval.dirty, g->neg_bitid);
713 DIRTY(sb->transform.dirty, g->neg_bitid);
714 DIRTY(sb->lighting.dirty, g->neg_bitid);
715 DIRTY(sb->fog.dirty, g->neg_bitid);
716 DIRTY(sb->line.dirty, g->neg_bitid);
717 DIRTY(sb->polygon.dirty, g->neg_bitid);
718 DIRTY(sb->viewport.dirty, g->neg_bitid);
719 DIRTY(sb->stencil.dirty, g->neg_bitid);
720 DIRTY(sb->texture.dirty, g->neg_bitid);
721
722 DIRTY(sb->buffer.enable, g->neg_bitid);
723 DIRTY(sb->eval.enable, g->neg_bitid);
724 DIRTY(sb->transform.enable, g->neg_bitid);
725 DIRTY(sb->lighting.enable, g->neg_bitid);
726 DIRTY(sb->fog.enable, g->neg_bitid);
727 DIRTY(sb->line.enable, g->neg_bitid);
728 DIRTY(sb->polygon.enable, g->neg_bitid);
729 DIRTY(sb->viewport.enable, g->neg_bitid);
730 DIRTY(sb->stencil.enable, g->neg_bitid);
731 for (i = 0 ; i < g->limits.maxTextureUnits ; i++)
732 {
733 DIRTY(sb->texture.enable[i], g->neg_bitid);
734 }
735 }
736 if (mask & GL_EVAL_BIT)
737 {
738 if (a->evalStackDepth == 0)
739 {
740 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty eval stack!" );
741 return;
742 }
743 a->evalStackDepth--;
744 for (i = 0 ; i < GLEVAL_TOT ; i++)
745 {
746 int size1 = a->evalStack[a->evalStackDepth].eval1D[i].order * gleval_sizes[i] * sizeof(GLfloat);
747 int size2 = a->evalStack[a->evalStackDepth].eval2D[i].uorder * a->evalStack[a->evalStackDepth].eval2D[i].vorder * gleval_sizes[i] * sizeof (GLfloat);
748 g->eval.enable1D[i] = a->evalStack[a->evalStackDepth].enable1D[i];
749 g->eval.enable2D[i] = a->evalStack[a->evalStackDepth].enable2D[i];
750 g->eval.eval1D[i].u1 = a->evalStack[a->evalStackDepth].eval1D[i].u1;
751 g->eval.eval1D[i].u2 = a->evalStack[a->evalStackDepth].eval1D[i].u2;
752 g->eval.eval1D[i].order = a->evalStack[a->evalStackDepth].eval1D[i].order;
753 crMemcpy((char*)g->eval.eval1D[i].coeff, a->evalStack[a->evalStackDepth].eval1D[i].coeff, size1);
754 crFree(a->evalStack[a->evalStackDepth].eval1D[i].coeff);
755 a->evalStack[a->evalStackDepth].eval1D[i].coeff = NULL;
756 g->eval.eval2D[i].u1 = a->evalStack[a->evalStackDepth].eval2D[i].u1;
757 g->eval.eval2D[i].u2 = a->evalStack[a->evalStackDepth].eval2D[i].u2;
758 g->eval.eval2D[i].v1 = a->evalStack[a->evalStackDepth].eval2D[i].v1;
759 g->eval.eval2D[i].v2 = a->evalStack[a->evalStackDepth].eval2D[i].v2;
760 g->eval.eval2D[i].uorder = a->evalStack[a->evalStackDepth].eval2D[i].uorder;
761 g->eval.eval2D[i].vorder = a->evalStack[a->evalStackDepth].eval2D[i].vorder;
762 crMemcpy((char*)g->eval.eval2D[i].coeff, a->evalStack[a->evalStackDepth].eval2D[i].coeff, size2);
763 crFree(a->evalStack[a->evalStackDepth].eval2D[i].coeff);
764 a->evalStack[a->evalStackDepth].eval2D[i].coeff = NULL;
765 }
766 g->eval.autoNormal = a->evalStack[a->evalStackDepth].autoNormal;
767 g->eval.un1D = a->evalStack[a->evalStackDepth].un1D;
768 g->eval.u11D = a->evalStack[a->evalStackDepth].u11D;
769 g->eval.u21D = a->evalStack[a->evalStackDepth].u21D;
770 g->eval.un2D = a->evalStack[a->evalStackDepth].un2D;
771 g->eval.u12D = a->evalStack[a->evalStackDepth].u12D;
772 g->eval.u22D = a->evalStack[a->evalStackDepth].u22D;
773 g->eval.vn2D = a->evalStack[a->evalStackDepth].vn2D;
774 g->eval.v12D = a->evalStack[a->evalStackDepth].v12D;
775 g->eval.v22D = a->evalStack[a->evalStackDepth].v22D;
776 for (i = 0; i < GLEVAL_TOT; i++) {
777 DIRTY(sb->eval.eval1D[i], g->neg_bitid);
778 DIRTY(sb->eval.eval2D[i], g->neg_bitid);
779 }
780 DIRTY(sb->eval.dirty, g->neg_bitid);
781 DIRTY(sb->eval.grid1D, g->neg_bitid);
782 DIRTY(sb->eval.grid2D, g->neg_bitid);
783 DIRTY(sb->eval.enable, g->neg_bitid);
784 }
785 if (mask & GL_FOG_BIT)
786 {
787 if (a->fogStackDepth == 0)
788 {
789 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty fog stack!" );
790 return;
791 }
792 a->fogStackDepth--;
793 g->fog.enable = a->fogStack[a->fogStackDepth].enable;
794 g->fog.color = a->fogStack[a->fogStackDepth].color;
795 g->fog.density = a->fogStack[a->fogStackDepth].density;
796 g->fog.start = a->fogStack[a->fogStackDepth].start;
797 g->fog.end = a->fogStack[a->fogStackDepth].end;
798 g->fog.index = a->fogStack[a->fogStackDepth].index;
799 g->fog.mode = a->fogStack[a->fogStackDepth].mode;
800 DIRTY(sb->fog.dirty, g->neg_bitid);
801 DIRTY(sb->fog.color, g->neg_bitid);
802 DIRTY(sb->fog.index, g->neg_bitid);
803 DIRTY(sb->fog.density, g->neg_bitid);
804 DIRTY(sb->fog.start, g->neg_bitid);
805 DIRTY(sb->fog.end, g->neg_bitid);
806 DIRTY(sb->fog.mode, g->neg_bitid);
807 DIRTY(sb->fog.enable, g->neg_bitid);
808 }
809 if (mask & GL_HINT_BIT)
810 {
811 if (a->hintStackDepth == 0)
812 {
813 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty hint stack!" );
814 return;
815 }
816 a->hintStackDepth--;
817 g->hint.perspectiveCorrection = a->hintStack[a->hintStackDepth].perspectiveCorrection;
818 g->hint.pointSmooth = a->hintStack[a->hintStackDepth].pointSmooth;
819 g->hint.lineSmooth = a->hintStack[a->hintStackDepth].lineSmooth;
820 g->hint.polygonSmooth = a->hintStack[a->hintStackDepth].polygonSmooth;
821 g->hint.fog = a->hintStack[a->hintStackDepth].fog;
822 DIRTY(sb->hint.dirty, g->neg_bitid);
823 DIRTY(sb->hint.perspectiveCorrection, g->neg_bitid);
824 DIRTY(sb->hint.pointSmooth, g->neg_bitid);
825 DIRTY(sb->hint.lineSmooth, g->neg_bitid);
826 DIRTY(sb->hint.polygonSmooth, g->neg_bitid);
827#ifdef CR_EXT_clip_volume_hint
828 g->hint.clipVolumeClipping = a->hintStack[a->hintStackDepth].clipVolumeClipping;
829 DIRTY(sb->hint.clipVolumeClipping, g->neg_bitid);
830#endif
831#ifdef CR_ARB_texture_compression
832 g->hint.textureCompression = a->hintStack[a->hintStackDepth].textureCompression;
833 DIRTY(sb->hint.textureCompression, g->neg_bitid);
834#endif
835#ifdef CR_SGIS_generate_mipmap
836 g->hint.generateMipmap = a->hintStack[a->hintStackDepth].generateMipmap;
837 DIRTY(sb->hint.generateMipmap, g->neg_bitid);
838#endif
839 }
840 if (mask & GL_LIGHTING_BIT)
841 {
842 if (a->lightingStackDepth == 0)
843 {
844 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty lighting stack!" );
845 return;
846 }
847 a->lightingStackDepth--;
848 g->lighting.lightModelAmbient = a->lightingStack[a->lightingStackDepth].lightModelAmbient;
849 g->lighting.lightModelLocalViewer = a->lightingStack[a->lightingStackDepth].lightModelLocalViewer;
850 g->lighting.lightModelTwoSide = a->lightingStack[a->lightingStackDepth].lightModelTwoSide;
851#if defined(CR_EXT_separate_specular_color) || defined(CR_OPENGL_VERSION_1_2)
852 g->lighting.lightModelColorControlEXT = a->lightingStack[a->lightingStackDepth].lightModelColorControlEXT;
853#endif
854 g->lighting.lighting = a->lightingStack[a->lightingStackDepth].lighting;
855 g->lighting.colorMaterial = a->lightingStack[a->lightingStackDepth].colorMaterial;
856 g->lighting.colorMaterialMode = a->lightingStack[a->lightingStackDepth].colorMaterialMode;
857 g->lighting.colorMaterialFace = a->lightingStack[a->lightingStackDepth].colorMaterialFace;
858 for (i = 0 ; i < g->limits.maxLights; i++)
859 {
860 g->lighting.light[i].enable = a->lightingStack[a->lightingStackDepth].light[i].enable;
861 g->lighting.light[i].ambient = a->lightingStack[a->lightingStackDepth].light[i].ambient;
862 g->lighting.light[i].diffuse = a->lightingStack[a->lightingStackDepth].light[i].diffuse;
863 g->lighting.light[i].specular = a->lightingStack[a->lightingStackDepth].light[i].specular;
864 g->lighting.light[i].spotDirection = a->lightingStack[a->lightingStackDepth].light[i].spotDirection;
865 g->lighting.light[i].position = a->lightingStack[a->lightingStackDepth].light[i].position;
866 g->lighting.light[i].spotExponent = a->lightingStack[a->lightingStackDepth].light[i].spotExponent;
867 g->lighting.light[i].spotCutoff = a->lightingStack[a->lightingStackDepth].light[i].spotCutoff;
868 g->lighting.light[i].constantAttenuation = a->lightingStack[a->lightingStackDepth].light[i].constantAttenuation;
869 g->lighting.light[i].linearAttenuation = a->lightingStack[a->lightingStackDepth].light[i].linearAttenuation;
870 g->lighting.light[i].quadraticAttenuation = a->lightingStack[a->lightingStackDepth].light[i].quadraticAttenuation;
871 }
872 for (i = 0 ; i < 2 ; i++)
873 {
874 g->lighting.ambient[i] = a->lightingStack[a->lightingStackDepth].ambient[i];
875 g->lighting.diffuse[i] = a->lightingStack[a->lightingStackDepth].diffuse[i];
876 g->lighting.specular[i] = a->lightingStack[a->lightingStackDepth].specular[i];
877 g->lighting.emission[i] = a->lightingStack[a->lightingStackDepth].emission[i];
878 g->lighting.shininess[i] = a->lightingStack[a->lightingStackDepth].shininess[i];
879 g->lighting.indexes[i][0] = a->lightingStack[a->lightingStackDepth].indexes[i][0];
880 g->lighting.indexes[i][1] = a->lightingStack[a->lightingStackDepth].indexes[i][1];
881 g->lighting.indexes[i][2] = a->lightingStack[a->lightingStackDepth].indexes[i][2];
882 }
883 g->lighting.shadeModel = a->lightingStack[a->lightingStackDepth].shadeModel;
884 DIRTY(sb->lighting.dirty, g->neg_bitid);
885 DIRTY(sb->lighting.shadeModel, g->neg_bitid);
886 DIRTY(sb->lighting.lightModel, g->neg_bitid);
887 DIRTY(sb->lighting.material, g->neg_bitid);
888 DIRTY(sb->lighting.enable, g->neg_bitid);
889 for (i = 0 ; i < g->limits.maxLights; i++)
890 {
891 DIRTY(sb->lighting.light[i].dirty, g->neg_bitid);
892 DIRTY(sb->lighting.light[i].enable, g->neg_bitid);
893 DIRTY(sb->lighting.light[i].ambient, g->neg_bitid);
894 DIRTY(sb->lighting.light[i].diffuse, g->neg_bitid);
895 DIRTY(sb->lighting.light[i].specular, g->neg_bitid);
896 DIRTY(sb->lighting.light[i].position, g->neg_bitid);
897 DIRTY(sb->lighting.light[i].attenuation, g->neg_bitid);
898 DIRTY(sb->lighting.light[i].spot, g->neg_bitid);
899 }
900 }
901 if (mask & GL_LINE_BIT)
902 {
903 if (a->lineStackDepth == 0)
904 {
905 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty line stack!" );
906 return;
907 }
908 a->lineStackDepth--;
909 g->line.lineSmooth = a->lineStack[a->lineStackDepth].lineSmooth;
910 g->line.lineStipple = a->lineStack[a->lineStackDepth].lineStipple;
911 g->line.pattern = a->lineStack[a->lineStackDepth].pattern;
912 g->line.repeat = a->lineStack[a->lineStackDepth].repeat;
913 g->line.width = a->lineStack[a->lineStackDepth].width;
914 DIRTY(sb->line.dirty, g->neg_bitid);
915 DIRTY(sb->line.enable, g->neg_bitid);
916 DIRTY(sb->line.width, g->neg_bitid);
917 DIRTY(sb->line.stipple, g->neg_bitid);
918 }
919 if (mask & GL_LIST_BIT)
920 {
921 if (a->listStackDepth == 0)
922 {
923 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty list stack!" );
924 return;
925 }
926 a->listStackDepth--;
927 g->lists.base = a->listStack[a->listStackDepth].base;
928 DIRTY(sb->lists.dirty, g->neg_bitid);
929 }
930 if (mask & GL_PIXEL_MODE_BIT)
931 {
932 if (a->pixelModeStackDepth == 0)
933 {
934 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty pixel mode stack!" );
935 return;
936 }
937 a->pixelModeStackDepth--;
938 g->pixel.bias = a->pixelModeStack[a->pixelModeStackDepth].bias;
939 g->pixel.scale = a->pixelModeStack[a->pixelModeStackDepth].scale;
940 g->pixel.indexOffset = a->pixelModeStack[a->pixelModeStackDepth].indexOffset;
941 g->pixel.indexShift = a->pixelModeStack[a->pixelModeStackDepth].indexShift;
942 g->pixel.mapColor = a->pixelModeStack[a->pixelModeStackDepth].mapColor;
943 g->pixel.mapStencil = a->pixelModeStack[a->pixelModeStackDepth].mapStencil;
944 g->pixel.xZoom = a->pixelModeStack[a->pixelModeStackDepth].xZoom;
945 g->pixel.yZoom = a->pixelModeStack[a->pixelModeStackDepth].yZoom;
946 g->buffer.readBuffer = a->pixelModeStack[a->pixelModeStackDepth].readBuffer;
947 DIRTY(sb->pixel.dirty, g->neg_bitid);
948 DIRTY(sb->pixel.transfer, g->neg_bitid);
949 DIRTY(sb->pixel.zoom, g->neg_bitid);
950 DIRTY(sb->buffer.dirty, g->neg_bitid);
951 DIRTY(sb->buffer.readBuffer, g->neg_bitid);
952 }
953 if (mask & GL_POINT_BIT)
954 {
955 if (a->pointStackDepth == 0)
956 {
957 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty point stack!" );
958 return;
959 }
960 a->pointStackDepth--;
961 g->point.pointSmooth = a->pointStack[a->pointStackDepth].pointSmooth;
962 g->point.pointSize = a->pointStack[a->pointStackDepth].pointSize;
963#if GL_ARB_point_sprite
964 g->point.pointSprite = a->pointStack[a->pointStackDepth].pointSprite;
965 DIRTY(sb->point.enableSprite, g->neg_bitid);
966 for (i = 0; i < CR_MAX_TEXTURE_UNITS; i++) {
967 g->point.coordReplacement[i] = a->enableStack[a->enableStackDepth].coordReplacement[i];
968 DIRTY(sb->point.coordReplacement[i], g->neg_bitid);
969 }
970#endif
971 DIRTY(sb->point.dirty, g->neg_bitid);
972 DIRTY(sb->point.size, g->neg_bitid);
973 DIRTY(sb->point.enableSmooth, g->neg_bitid);
974 }
975 if (mask & GL_POLYGON_BIT)
976 {
977 if (a->polygonStackDepth == 0)
978 {
979 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty polygon stack!" );
980 return;
981 }
982 a->polygonStackDepth--;
983 g->polygon.cullFace = a->polygonStack[a->polygonStackDepth].cullFace;
984 g->polygon.cullFaceMode = a->polygonStack[a->polygonStackDepth].cullFaceMode;
985 g->polygon.frontFace = a->polygonStack[a->polygonStackDepth].frontFace;
986 g->polygon.frontMode = a->polygonStack[a->polygonStackDepth].frontMode;
987 g->polygon.backMode = a->polygonStack[a->polygonStackDepth].backMode;
988 g->polygon.polygonSmooth = a->polygonStack[a->polygonStackDepth].polygonSmooth;
989 g->polygon.polygonStipple = a->polygonStack[a->polygonStackDepth].polygonStipple;
990 g->polygon.polygonOffsetFill = a->polygonStack[a->polygonStackDepth].polygonOffsetFill;
991 g->polygon.polygonOffsetLine = a->polygonStack[a->polygonStackDepth].polygonOffsetLine;
992 g->polygon.polygonOffsetPoint = a->polygonStack[a->polygonStackDepth].polygonOffsetPoint;
993 g->polygon.offsetFactor = a->polygonStack[a->polygonStackDepth].offsetFactor;
994 g->polygon.offsetUnits = a->polygonStack[a->polygonStackDepth].offsetUnits;
995 DIRTY(sb->polygon.dirty, g->neg_bitid);
996 DIRTY(sb->polygon.enable, g->neg_bitid);
997 DIRTY(sb->polygon.offset, g->neg_bitid);
998 DIRTY(sb->polygon.mode, g->neg_bitid);
999 DIRTY(sb->polygon.stipple, g->neg_bitid);
1000 }
1001 if (mask & GL_POLYGON_STIPPLE_BIT)
1002 {
1003 if (a->polygonStippleStackDepth == 0)
1004 {
1005 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty polygon stipple stack!" );
1006 return;
1007 }
1008 a->polygonStippleStackDepth--;
1009 crMemcpy( g->polygon.stipple, a->polygonStippleStack[a->polygonStippleStackDepth].pattern, 32*sizeof(GLint) );
1010 DIRTY(sb->polygon.dirty, g->neg_bitid);
1011 DIRTY(sb->polygon.stipple, g->neg_bitid);
1012 }
1013 if (mask & GL_SCISSOR_BIT)
1014 {
1015 if (a->scissorStackDepth == 0)
1016 {
1017 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty scissor stack!" );
1018 return;
1019 }
1020 a->scissorStackDepth--;
1021 g->viewport.scissorTest = a->scissorStack[a->scissorStackDepth].scissorTest;
1022 g->viewport.scissorX = a->scissorStack[a->scissorStackDepth].scissorX;
1023 g->viewport.scissorY = a->scissorStack[a->scissorStackDepth].scissorY;
1024 g->viewport.scissorW = a->scissorStack[a->scissorStackDepth].scissorW;
1025 g->viewport.scissorH = a->scissorStack[a->scissorStackDepth].scissorH;
1026 DIRTY(sb->viewport.dirty, g->neg_bitid);
1027 DIRTY(sb->viewport.enable, g->neg_bitid);
1028 DIRTY(sb->viewport.s_dims, g->neg_bitid);
1029 }
1030 if (mask & GL_STENCIL_BUFFER_BIT)
1031 {
1032 if (a->stencilBufferStackDepth == 0)
1033 {
1034 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty stencil stack!" );
1035 return;
1036 }
1037 a->stencilBufferStackDepth--;
1038 g->stencil.stencilTest = a->stencilBufferStack[a->stencilBufferStackDepth].stencilTest;
1039 g->stencil.clearValue = a->stencilBufferStack[a->stencilBufferStackDepth].clearValue;
1040 g->stencil.writeMask = a->stencilBufferStack[a->stencilBufferStackDepth].writeMask;
1041 for (i = 0; i < CRSTATE_STENCIL_BUFFER_COUNT; ++i)
1042 {
1043 g->stencil.buffers[i].func = a->stencilBufferStack[a->stencilBufferStackDepth].buffers[i].func;
1044 g->stencil.buffers[i].mask = a->stencilBufferStack[a->stencilBufferStackDepth].buffers[i].mask;
1045 g->stencil.buffers[i].ref = a->stencilBufferStack[a->stencilBufferStackDepth].buffers[i].ref;
1046 g->stencil.buffers[i].fail = a->stencilBufferStack[a->stencilBufferStackDepth].buffers[i].fail;
1047 g->stencil.buffers[i].passDepthFail = a->stencilBufferStack[a->stencilBufferStackDepth].buffers[i].passDepthFail;
1048 g->stencil.buffers[i].passDepthPass = a->stencilBufferStack[a->stencilBufferStackDepth].buffers[i].passDepthPass;
1049 }
1050
1051 DIRTY(sb->stencil.dirty, g->neg_bitid);
1052 DIRTY(sb->stencil.enable, g->neg_bitid);
1053 DIRTY(sb->stencil.clearValue, g->neg_bitid);
1054 DIRTY(sb->stencil.writeMask, g->neg_bitid);
1055
1056 for (i = 0; i < CRSTATE_STENCIL_BUFFER_REF_COUNT; ++i)
1057 {
1058 DIRTY(sb->stencil.bufferRefs[i].func, g->neg_bitid);
1059 DIRTY(sb->stencil.bufferRefs[i].op, g->neg_bitid);
1060 }
1061 }
1062 if (mask & GL_TEXTURE_BIT)
1063 {
1064 CRTextureStack *tState;
1065 if (a->textureStackDepth == 0)
1066 {
1067 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty texture stack!" );
1068 return;
1069 }
1070 a->textureStackDepth--;
1071 tState = a->textureStack + a->textureStackDepth;
1072
1073 g->texture.curTextureUnit = tState->curTextureUnit;
1074 for (i = 0 ; i < g->limits.maxTextureUnits ; i++)
1075 {
1076 copy_texunit(&g->texture.unit[i], &tState->unit[i]);
1077 /* first, restore the bindings! */
1078 g->texture.unit[i].currentTexture1D = crStateTextureGet(GL_TEXTURE_1D, tState->unit[i].Saved1D.id);
1079 copy_texobj(g->texture.unit[i].currentTexture1D, &tState->unit[i].Saved1D, GL_FALSE);
1080 g->texture.unit[i].currentTexture2D = crStateTextureGet(GL_TEXTURE_2D, tState->unit[i].Saved2D.id);
1081 copy_texobj(g->texture.unit[i].currentTexture2D, &tState->unit[i].Saved2D, GL_FALSE);
1082#ifdef CR_OPENGL_VERSION_1_2
1083 g->texture.unit[i].currentTexture3D = crStateTextureGet(GL_TEXTURE_3D, tState->unit[i].Saved3D.id);
1084 copy_texobj(g->texture.unit[i].currentTexture3D, &tState->unit[i].Saved3D, GL_FALSE);
1085#endif
1086#ifdef CR_ARB_texture_cube_map
1087 g->texture.unit[i].currentTextureCubeMap = crStateTextureGet(GL_TEXTURE_CUBE_MAP_ARB, tState->unit[i].SavedCubeMap.id);
1088 copy_texobj(g->texture.unit[i].currentTextureCubeMap, &tState->unit[i].SavedCubeMap, GL_FALSE);
1089#endif
1090#ifdef CR_NV_texture_rectangle
1091 g->texture.unit[i].currentTextureRect = crStateTextureGet(GL_TEXTURE_CUBE_MAP_ARB, tState->unit[i].SavedRect.id);
1092 copy_texobj(g->texture.unit[i].currentTextureRect, &tState->unit[i].SavedRect, GL_FALSE);
1093#endif
1094 }
1095 DIRTY(sb->texture.dirty, g->neg_bitid);
1096 for (i = 0 ; i < g->limits.maxTextureUnits ; i++)
1097 {
1098 DIRTY(sb->texture.enable[i], g->neg_bitid);
1099 DIRTY(sb->texture.current[i], g->neg_bitid);
1100 DIRTY(sb->texture.objGen[i], g->neg_bitid);
1101 DIRTY(sb->texture.eyeGen[i], g->neg_bitid);
1102 DIRTY(sb->texture.envBit[i], g->neg_bitid);
1103 DIRTY(sb->texture.genMode[i], g->neg_bitid);
1104 }
1105
1106 for (i = 0 ; i < g->limits.maxTextureUnits ; i++)
1107 {
1108 DIRTY(g->texture.unit[i].currentTexture1D->dirty, g->neg_bitid);
1109 DIRTY(g->texture.unit[i].currentTexture2D->dirty, g->neg_bitid);
1110 DIRTY(g->texture.unit[i].currentTexture3D->dirty, g->neg_bitid);
1111#ifdef CR_ARB_texture_cube_map
1112 DIRTY(g->texture.unit[i].currentTextureCubeMap->dirty, g->neg_bitid);
1113#endif
1114#ifdef CR_NV_texture_rectangle
1115 DIRTY(g->texture.unit[i].currentTextureRect->dirty, g->neg_bitid);
1116#endif
1117 DIRTY(g->texture.unit[i].currentTexture1D->paramsBit[i], g->neg_bitid);
1118 DIRTY(g->texture.unit[i].currentTexture2D->paramsBit[i], g->neg_bitid);
1119 DIRTY(g->texture.unit[i].currentTexture3D->paramsBit[i], g->neg_bitid);
1120#ifdef CR_ARB_texture_cube_map
1121 DIRTY(g->texture.unit[i].currentTextureCubeMap->paramsBit[i], g->neg_bitid);
1122#endif
1123#ifdef CR_NV_texture_rectangle
1124 DIRTY(g->texture.unit[i].currentTextureRect->paramsBit[i], g->neg_bitid);
1125#endif
1126 }
1127 }
1128 if (mask & GL_TRANSFORM_BIT)
1129 {
1130 if (a->transformStackDepth == 0)
1131 {
1132 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty transform stack!" );
1133 return;
1134 }
1135 a->transformStackDepth--;
1136 g->transform.matrixMode = a->transformStack[a->transformStackDepth].matrixMode;
1137 crStateMatrixMode(g->transform.matrixMode);
1138 for (i = 0 ; i < g->limits.maxClipPlanes ; i++)
1139 {
1140 g->transform.clip[i] = a->transformStack[a->transformStackDepth].clip[i];
1141 g->transform.clipPlane[i] = a->transformStack[a->transformStackDepth].clipPlane[i];
1142 }
1143 g->transform.normalize = a->transformStack[a->transformStackDepth].normalize;
1144#ifdef CR_OPENGL_VERSION_1_2
1145 g->transform.rescaleNormals = a->transformStack[a->transformStackDepth].rescaleNormals;
1146#endif
1147 DIRTY(sb->transform.dirty, g->neg_bitid);
1148 DIRTY(sb->transform.matrixMode, g->neg_bitid);
1149 DIRTY(sb->transform.clipPlane, g->neg_bitid);
1150 DIRTY(sb->transform.enable, g->neg_bitid);
1151 }
1152 if (mask & GL_VIEWPORT_BIT)
1153 {
1154 if (a->viewportStackDepth == 0)
1155 {
1156 crStateError(__LINE__, __FILE__, GL_STACK_UNDERFLOW, "glPopAttrib called with an empty viewport stack!" );
1157 return;
1158 }
1159 a->viewportStackDepth--;
1160 g->viewport.viewportX = a->viewportStack[a->viewportStackDepth].viewportX;
1161 g->viewport.viewportY = a->viewportStack[a->viewportStackDepth].viewportY;
1162 g->viewport.viewportW = a->viewportStack[a->viewportStackDepth].viewportW;
1163 g->viewport.viewportH = a->viewportStack[a->viewportStackDepth].viewportH;
1164 g->viewport.nearClip = a->viewportStack[a->viewportStackDepth].nearClip;
1165 g->viewport.farClip = a->viewportStack[a->viewportStackDepth].farClip;
1166 DIRTY(sb->viewport.dirty, g->neg_bitid);
1167 DIRTY(sb->viewport.v_dims, g->neg_bitid);
1168 DIRTY(sb->viewport.depth, g->neg_bitid);
1169 }
1170 DIRTY(ab->dirty, g->neg_bitid);
1171}
1172
1173void crStateAttribSwitch( CRAttribBits *bb, CRbitvalue *bitID,
1174 CRContext *fromCtx, CRContext *toCtx )
1175{
1176 CRAttribState *to = &(toCtx->attrib);
1177 CRAttribState *from = &(fromCtx->attrib);
1178 if (to->attribStackDepth != 0 || from->attribStackDepth != 0)
1179 {
1180 crWarning( "Trying to switch contexts when the attribute stacks "
1181 "weren't empty. Currently, this is not supported." );
1182 }
1183 (void) bb;
1184 (void) bitID;
1185}
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