src/mesa/main/attrib.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.1
   4  *
   5  * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #include "glheader.h"
  26 #include "imports.h"
  27 #include "accum.h"
  28 #include "attrib.h"
  29 #include "blend.h"
  30 #include "buffers.h"
  31 #include "colormac.h"
  32 #include "colortab.h"
  33 #include "context.h"
  34 #include "depth.h"
  35 #include "enable.h"
  36 #include "enums.h"
  37 #include "fog.h"
  38 #include "hint.h"
  39 #include "light.h"
  40 #include "lines.h"
  41 #include "matrix.h"
  42 #include "points.h"
  43 #include "polygon.h"
  44 #include "simple_list.h"
  45 #include "stencil.h"
  46 #include "texobj.h"
  47 #include "texstate.h"
  48 #include "mtypes.h"
  49 #include "math/m_xform.h"
  50
  51
  52 /*
  53  * Allocate a new attribute state node.  These nodes have a
  54  * "kind" value and a pointer to a struct of state data.
  55  */
  56 static struct gl_attrib_node *
  57 new_attrib_node( GLbitfield kind )
  58 {
  59    struct gl_attrib_node *an = MALLOC_STRUCT(gl_attrib_node);
  60    if (an) {
  61       an->kind = kind;
  62    }
  63    return an;
  64 }
  65
  66
  67 void GLAPIENTRY
  68 _mesa_PushAttrib(GLbitfield mask)
  69 {
  70    struct gl_attrib_node *newnode;
  71    struct gl_attrib_node *head;
  72
  73    GET_CURRENT_CONTEXT(ctx);
  74    ASSERT_OUTSIDE_BEGIN_END(ctx);
  75
  76    if (MESA_VERBOSE & VERBOSE_API)
  77       _mesa_debug(ctx, "glPushAttrib %x\n", (int) mask);
  78
  79    if (ctx->AttribStackDepth >= MAX_ATTRIB_STACK_DEPTH) {
  80       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
  81       return;
  82    }
  83
  84    /* Build linked list of attribute nodes which save all attribute */
  85    /* groups specified by the mask. */
  86    head = NULL;
  87
  88    if (mask & GL_ACCUM_BUFFER_BIT) {
  89       struct gl_accum_attrib *attr;
  90       attr = MALLOC_STRUCT( gl_accum_attrib );
  91       MEMCPY( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );
  92       newnode = new_attrib_node( GL_ACCUM_BUFFER_BIT );
  93       newnode->data = attr;
  94       newnode->next = head;
  95       head = newnode;
  96    }
  97
  98    if (mask & GL_COLOR_BUFFER_BIT) {
  99       struct gl_colorbuffer_attrib *attr;
 100       attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
 101       MEMCPY( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
 102       newnode = new_attrib_node( GL_COLOR_BUFFER_BIT );
 103       newnode->data = attr;
 104       newnode->next = head;
 105       head = newnode;
 106    }
 107
 108    if (mask & GL_CURRENT_BIT) {
 109       struct gl_current_attrib *attr;
 110       FLUSH_CURRENT( ctx, 0 );
 111       attr = MALLOC_STRUCT( gl_current_attrib );
 112       MEMCPY( attr, &ctx->Current, sizeof(struct gl_current_attrib) );
 113       newnode = new_attrib_node( GL_CURRENT_BIT );
 114       newnode->data = attr;
 115       newnode->next = head;
 116       head = newnode;
 117    }
 118
 119    if (mask & GL_DEPTH_BUFFER_BIT) {
 120       struct gl_depthbuffer_attrib *attr;
 121       attr = MALLOC_STRUCT( gl_depthbuffer_attrib );
 122       MEMCPY( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );
 123       newnode = new_attrib_node( GL_DEPTH_BUFFER_BIT );
 124       newnode->data = attr;
 125       newnode->next = head;
 126       head = newnode;
 127    }
 128
 129    if (mask & GL_ENABLE_BIT) {
 130       struct gl_enable_attrib *attr;
 131       GLuint i;
 132       attr = MALLOC_STRUCT( gl_enable_attrib );
 133       /* Copy enable flags from all other attributes into the enable struct. */
 134       attr->AlphaTest = ctx->Color.AlphaEnabled;
 135       attr->AutoNormal = ctx->Eval.AutoNormal;
 136       attr->Blend = ctx->Color.BlendEnabled;
 137       attr->ClipPlanes = ctx->Transform.ClipPlanesEnabled;
 138       attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;
 139       attr->ColorTable = ctx->Pixel.ColorTableEnabled;
 140       attr->PostColorMatrixColorTable = ctx->Pixel.PostColorMatrixColorTableEnabled;
 141       attr->PostConvolutionColorTable = ctx->Pixel.PostConvolutionColorTableEnabled;
 142       attr->Convolution1D = ctx->Pixel.Convolution1DEnabled;
 143       attr->Convolution2D = ctx->Pixel.Convolution2DEnabled;
 144       attr->Separable2D = ctx->Pixel.Separable2DEnabled;
 145       attr->CullFace = ctx->Polygon.CullFlag;
 146       attr->DepthTest = ctx->Depth.Test;
 147       attr->Dither = ctx->Color.DitherFlag;
 148       attr->Fog = ctx->Fog.Enabled;
 149       for (i=0;i<MAX_LIGHTS;i++) {
 150          attr->Light[i] = ctx->Light.Light[i].Enabled;
 151       }
 152       attr->Lighting = ctx->Light.Enabled;
 153       attr->LineSmooth = ctx->Line.SmoothFlag;
 154       attr->LineStipple = ctx->Line.StippleFlag;
 155       attr->Histogram = ctx->Pixel.HistogramEnabled;
 156       attr->MinMax = ctx->Pixel.MinMaxEnabled;
 157       attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
 158       attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
 159       attr->Map1Color4 = ctx->Eval.Map1Color4;
 160       attr->Map1Index = ctx->Eval.Map1Index;
 161       attr->Map1Normal = ctx->Eval.Map1Normal;
 162       attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
 163       attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
 164       attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
 165       attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
 166       attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
 167       attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
 168       MEMCPY(attr->Map1Attrib, ctx->Eval.Map1Attrib, sizeof(ctx->Eval.Map1Attrib));
 169       attr->Map2Color4 = ctx->Eval.Map2Color4;
 170       attr->Map2Index = ctx->Eval.Map2Index;
 171       attr->Map2Normal = ctx->Eval.Map2Normal;
 172       attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
 173       attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
 174       attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
 175       attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
 176       attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
 177       attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
 178       MEMCPY(attr->Map2Attrib, ctx->Eval.Map2Attrib, sizeof(ctx->Eval.Map2Attrib));
 179       attr->Normalize = ctx->Transform.Normalize;
 180       attr->RasterPositionUnclipped = ctx->Transform.RasterPositionUnclipped;
 181       attr->PixelTexture = ctx->Pixel.PixelTextureEnabled;
 182       attr->PointSmooth = ctx->Point.SmoothFlag;
 183       attr->PointSprite = ctx->Point.PointSprite;
 184       attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;
 185       attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;
 186       attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;
 187       attr->PolygonSmooth = ctx->Polygon.SmoothFlag;
 188       attr->PolygonStipple = ctx->Polygon.StippleFlag;
 189       attr->RescaleNormals = ctx->Transform.RescaleNormals;
 190       attr->Scissor = ctx->Scissor.Enabled;
 191       attr->Stencil = ctx->Stencil.Enabled;
 192       attr->MultisampleEnabled = ctx->Multisample.Enabled;
 193       attr->SampleAlphaToCoverage = ctx->Multisample.SampleAlphaToCoverage;
 194       attr->SampleAlphaToOne = ctx->Multisample.SampleAlphaToOne;
 195       attr->SampleCoverage = ctx->Multisample.SampleCoverage;
 196       attr->SampleCoverageInvert = ctx->Multisample.SampleCoverageInvert;
 197       for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 198          attr->Texture[i] = ctx->Texture.Unit[i].Enabled;
 199          attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
 200          attr->TextureColorTable[i] = ctx->Texture.Unit[i].ColorTableEnabled;
 201       }
 202       /* GL_NV_vertex_program */
 203       attr->VertexProgram = ctx->VertexProgram.Enabled;
 204       attr->VertexProgramPointSize = ctx->VertexProgram.PointSizeEnabled;
 205       attr->VertexProgramTwoSide = ctx->VertexProgram.TwoSideEnabled;
 206       newnode = new_attrib_node( GL_ENABLE_BIT );
 207       newnode->data = attr;
 208       newnode->next = head;
 209       head = newnode;
 210    }
 211
 212    if (mask & GL_EVAL_BIT) {
 213       struct gl_eval_attrib *attr;
 214       attr = MALLOC_STRUCT( gl_eval_attrib );
 215       MEMCPY( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
 216       newnode = new_attrib_node( GL_EVAL_BIT );
 217       newnode->data = attr;
 218       newnode->next = head;
 219       head = newnode;
 220    }
 221
 222    if (mask & GL_FOG_BIT) {
 223       struct gl_fog_attrib *attr;
 224       attr = MALLOC_STRUCT( gl_fog_attrib );
 225       MEMCPY( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
 226       newnode = new_attrib_node( GL_FOG_BIT );
 227       newnode->data = attr;
 228       newnode->next = head;
 229       head = newnode;
 230    }
 231
 232    if (mask & GL_HINT_BIT) {
 233       struct gl_hint_attrib *attr;
 234       attr = MALLOC_STRUCT( gl_hint_attrib );
 235       MEMCPY( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
 236       newnode = new_attrib_node( GL_HINT_BIT );
 237       newnode->data = attr;
 238       newnode->next = head;
 239       head = newnode;
 240    }
 241
 242    if (mask & GL_LIGHTING_BIT) {
 243       struct gl_light_attrib *attr;
 244       FLUSH_CURRENT(ctx, 0);    /* flush material changes */
 245       attr = MALLOC_STRUCT( gl_light_attrib );
 246       MEMCPY( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
 247       newnode = new_attrib_node( GL_LIGHTING_BIT );
 248       newnode->data = attr;
 249       newnode->next = head;
 250       head = newnode;
 251    }
 252
 253    if (mask & GL_LINE_BIT) {
 254       struct gl_line_attrib *attr;
 255       attr = MALLOC_STRUCT( gl_line_attrib );
 256       MEMCPY( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
 257       newnode = new_attrib_node( GL_LINE_BIT );
 258       newnode->data = attr;
 259       newnode->next = head;
 260       head = newnode;
 261    }
 262
 263    if (mask & GL_LIST_BIT) {
 264       struct gl_list_attrib *attr;
 265       attr = MALLOC_STRUCT( gl_list_attrib );
 266       MEMCPY( attr, &ctx->List, sizeof(struct gl_list_attrib) );
 267       newnode = new_attrib_node( GL_LIST_BIT );
 268       newnode->data = attr;
 269       newnode->next = head;
 270       head = newnode;
 271    }
 272
 273    if (mask & GL_PIXEL_MODE_BIT) {
 274       struct gl_pixel_attrib *attr;
 275       attr = MALLOC_STRUCT( gl_pixel_attrib );
 276       MEMCPY( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
 277       newnode = new_attrib_node( GL_PIXEL_MODE_BIT );
 278       newnode->data = attr;
 279       newnode->next = head;
 280       head = newnode;
 281    }
 282
 283    if (mask & GL_POINT_BIT) {
 284       struct gl_point_attrib *attr;
 285       attr = MALLOC_STRUCT( gl_point_attrib );
 286       MEMCPY( attr, &ctx->Point, sizeof(struct gl_point_attrib) );
 287       newnode = new_attrib_node( GL_POINT_BIT );
 288       newnode->data = attr;
 289       newnode->next = head;
 290       head = newnode;
 291    }
 292
 293    if (mask & GL_POLYGON_BIT) {
 294       struct gl_polygon_attrib *attr;
 295       attr = MALLOC_STRUCT( gl_polygon_attrib );
 296       MEMCPY( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );
 297       newnode = new_attrib_node( GL_POLYGON_BIT );
 298       newnode->data = attr;
 299       newnode->next = head;
 300       head = newnode;
 301    }
 302
 303    if (mask & GL_POLYGON_STIPPLE_BIT) {
 304       GLuint *stipple;
 305       stipple = (GLuint *) MALLOC( 32*sizeof(GLuint) );
 306       MEMCPY( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );
 307       newnode = new_attrib_node( GL_POLYGON_STIPPLE_BIT );
 308       newnode->data = stipple;
 309       newnode->next = head;
 310       head = newnode;
 311    }
 312
 313    if (mask & GL_SCISSOR_BIT) {
 314       struct gl_scissor_attrib *attr;
 315       attr = MALLOC_STRUCT( gl_scissor_attrib );
 316       MEMCPY( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );
 317       newnode = new_attrib_node( GL_SCISSOR_BIT );
 318       newnode->data = attr;
 319       newnode->next = head;
 320       head = newnode;
 321    }
 322
 323    if (mask & GL_STENCIL_BUFFER_BIT) {
 324       struct gl_stencil_attrib *attr;
 325       attr = MALLOC_STRUCT( gl_stencil_attrib );
 326       MEMCPY( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );
 327       newnode = new_attrib_node( GL_STENCIL_BUFFER_BIT );
 328       newnode->data = attr;
 329       newnode->next = head;
 330       head = newnode;
 331    }
 332
 333    if (mask & GL_TEXTURE_BIT) {
 334       struct gl_texture_attrib *attr;
 335       GLuint u;
 336       /* Bump the texture object reference counts so that they don't
 337        * inadvertantly get deleted.
 338        */
 339       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 340          ctx->Texture.Unit[u].Current1D->RefCount++;
 341          ctx->Texture.Unit[u].Current2D->RefCount++;
 342          ctx->Texture.Unit[u].Current3D->RefCount++;
 343          ctx->Texture.Unit[u].CurrentCubeMap->RefCount++;
 344          ctx->Texture.Unit[u].CurrentRect->RefCount++;
 345       }
 346       attr = MALLOC_STRUCT( gl_texture_attrib );
 347       MEMCPY( attr, &ctx->Texture, sizeof(struct gl_texture_attrib) );
 348       /* copy state of the currently bound texture objects */
 349       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 350          _mesa_copy_texture_object(&attr->Unit[u].Saved1D,
 351                                    attr->Unit[u].Current1D);
 352          _mesa_copy_texture_object(&attr->Unit[u].Saved2D,
 353                                    attr->Unit[u].Current2D);
 354          _mesa_copy_texture_object(&attr->Unit[u].Saved3D,
 355                                    attr->Unit[u].Current3D);
 356          _mesa_copy_texture_object(&attr->Unit[u].SavedCubeMap,
 357                                    attr->Unit[u].CurrentCubeMap);
 358          _mesa_copy_texture_object(&attr->Unit[u].SavedRect,
 359                                    attr->Unit[u].CurrentRect);
 360       }
 361       newnode = new_attrib_node( GL_TEXTURE_BIT );
 362       newnode->data = attr;
 363       newnode->next = head;
 364       head = newnode;
 365    }
 366
 367    if (mask & GL_TRANSFORM_BIT) {
 368       struct gl_transform_attrib *attr;
 369       attr = MALLOC_STRUCT( gl_transform_attrib );
 370       MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
 371       newnode = new_attrib_node( GL_TRANSFORM_BIT );
 372       newnode->data = attr;
 373       newnode->next = head;
 374       head = newnode;
 375    }
 376
 377    if (mask & GL_VIEWPORT_BIT) {
 378       struct gl_viewport_attrib *attr;
 379       attr = MALLOC_STRUCT( gl_viewport_attrib );
 380       MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
 381       newnode = new_attrib_node( GL_VIEWPORT_BIT );
 382       newnode->data = attr;
 383       newnode->next = head;
 384       head = newnode;
 385    }
 386
 387    /* GL_ARB_multisample */
 388    if (mask & GL_MULTISAMPLE_BIT_ARB) {
 389       struct gl_multisample_attrib *attr;
 390       attr = MALLOC_STRUCT( gl_multisample_attrib );
 391       MEMCPY( attr, &ctx->Multisample, sizeof(struct gl_multisample_attrib) );
 392       newnode = new_attrib_node( GL_MULTISAMPLE_BIT_ARB );
 393       newnode->data = attr;
 394       newnode->next = head;
 395       head = newnode;
 396    }
 397
 398    ctx->AttribStack[ctx->AttribStackDepth] = head;
 399    ctx->AttribStackDepth++;
 400 }
 401
 402
 403
 404 static void
 405 pop_enable_group(GLcontext *ctx, const struct gl_enable_attrib *enable)
 406 {
 407    GLuint i;
 408
 409 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)          \
 410         if ((VALUE) != (NEWVALUE)) {                    \
 411            _mesa_set_enable( ctx, ENUM, (NEWVALUE) );   \
 412         }
 413
 414    TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
 415    TEST_AND_UPDATE(ctx->Color.BlendEnabled, enable->Blend, GL_BLEND);
 416
 417    for (i=0;i<MAX_CLIP_PLANES;i++) {
 418       const GLuint mask = 1 << i;
 419       if ((ctx->Transform.ClipPlanesEnabled & mask) != (enable->ClipPlanes & mask))
 420           _mesa_set_enable(ctx, (GLenum) (GL_CLIP_PLANE0 + i),
 421                            (GLboolean) ((enable->ClipPlanes & mask) ? GL_TRUE : GL_FALSE));
 422    }
 423
 424    TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial,
 425                    GL_COLOR_MATERIAL);
 426    TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled, enable->ColorTable,
 427                    GL_COLOR_TABLE);
 428    TEST_AND_UPDATE(ctx->Pixel.PostColorMatrixColorTableEnabled,
 429                    enable->PostColorMatrixColorTable,
 430                    GL_POST_COLOR_MATRIX_COLOR_TABLE);
 431    TEST_AND_UPDATE(ctx->Pixel.PostConvolutionColorTableEnabled,
 432                    enable->PostConvolutionColorTable,
 433                    GL_POST_CONVOLUTION_COLOR_TABLE);
 434    TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
 435    TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
 436    TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
 437    TEST_AND_UPDATE(ctx->Pixel.Convolution1DEnabled, enable->Convolution1D,
 438                    GL_CONVOLUTION_1D);
 439    TEST_AND_UPDATE(ctx->Pixel.Convolution2DEnabled, enable->Convolution2D,
 440                    GL_CONVOLUTION_2D);
 441    TEST_AND_UPDATE(ctx->Pixel.Separable2DEnabled, enable->Separable2D,
 442                    GL_SEPARABLE_2D);
 443    TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
 444    TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
 445    TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
 446    TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple,
 447                    GL_LINE_STIPPLE);
 448    TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp,
 449                    GL_INDEX_LOGIC_OP);
 450    TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp,
 451                    GL_COLOR_LOGIC_OP);
 452
 453    TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
 454    TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
 455    TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
 456    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1,
 457                    GL_MAP1_TEXTURE_COORD_1);
 458    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2,
 459                    GL_MAP1_TEXTURE_COORD_2);
 460    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3,
 461                    GL_MAP1_TEXTURE_COORD_3);
 462    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4,
 463                    GL_MAP1_TEXTURE_COORD_4);
 464    TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3,
 465                    GL_MAP1_VERTEX_3);
 466    TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4,
 467                    GL_MAP1_VERTEX_4);
 468    for (i = 0; i < 16; i++) {
 469       TEST_AND_UPDATE(ctx->Eval.Map1Attrib[i], enable->Map1Attrib[i],
 470                       GL_MAP1_VERTEX_ATTRIB0_4_NV + i);
 471    }
 472
 473    TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
 474    TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
 475    TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
 476    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1,
 477                    GL_MAP2_TEXTURE_COORD_1);
 478    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2,
 479                    GL_MAP2_TEXTURE_COORD_2);
 480    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3,
 481                    GL_MAP2_TEXTURE_COORD_3);
 482    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4,
 483                    GL_MAP2_TEXTURE_COORD_4);
 484    TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3,
 485                    GL_MAP2_VERTEX_3);
 486    TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4,
 487                    GL_MAP2_VERTEX_4);
 488    for (i = 0; i < 16; i++) {
 489       TEST_AND_UPDATE(ctx->Eval.Map2Attrib[i], enable->Map2Attrib[i],
 490                       GL_MAP2_VERTEX_ATTRIB0_4_NV + i);
 491    }
 492
 493    TEST_AND_UPDATE(ctx->Eval.AutoNormal, enable->AutoNormal, GL_AUTO_NORMAL);
 494    TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
 495    TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals,
 496                    GL_RESCALE_NORMAL_EXT);
 497    TEST_AND_UPDATE(ctx->Transform.RasterPositionUnclipped,
 498                    enable->RasterPositionUnclipped,
 499                    GL_RASTER_POSITION_UNCLIPPED_IBM);
 500    TEST_AND_UPDATE(ctx->Pixel.PixelTextureEnabled, enable->PixelTexture,
 501                    GL_POINT_SMOOTH);
 502    TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth,
 503                    GL_POINT_SMOOTH);
 504    if (ctx->Extensions.NV_point_sprite || ctx->Extensions.ARB_point_sprite) {
 505       TEST_AND_UPDATE(ctx->Point.PointSprite, enable->PointSprite,
 506                       GL_POINT_SPRITE_NV);
 507    }
 508    TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint,
 509                    GL_POLYGON_OFFSET_POINT);
 510    TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine,
 511                    GL_POLYGON_OFFSET_LINE);
 512    TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill,
 513                    GL_POLYGON_OFFSET_FILL);
 514    TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth,
 515                    GL_POLYGON_SMOOTH);
 516    TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple,
 517                    GL_POLYGON_STIPPLE);
 518    TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
 519    TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
 520    /* XXX two-sided stencil */
 521    TEST_AND_UPDATE(ctx->Multisample.Enabled, enable->MultisampleEnabled,
 522                    GL_MULTISAMPLE_ARB);
 523    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToCoverage,
 524                    enable->SampleAlphaToCoverage,
 525                    GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
 526    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToOne,
 527                    enable->SampleAlphaToOne,
 528                    GL_SAMPLE_ALPHA_TO_ONE_ARB);
 529    TEST_AND_UPDATE(ctx->Multisample.SampleCoverage,
 530                    enable->SampleCoverage,
 531                    GL_SAMPLE_COVERAGE_ARB);
 532    TEST_AND_UPDATE(ctx->Multisample.SampleCoverageInvert,
 533                    enable->SampleCoverageInvert,
 534                    GL_SAMPLE_COVERAGE_INVERT_ARB);
 535    /* GL_NV_vertex_program */
 536    TEST_AND_UPDATE(ctx->VertexProgram.Enabled,
 537                    enable->VertexProgram,
 538                    GL_VERTEX_PROGRAM_NV);
 539    TEST_AND_UPDATE(ctx->VertexProgram.PointSizeEnabled,
 540                    enable->VertexProgramPointSize,
 541                    GL_VERTEX_PROGRAM_POINT_SIZE_NV);
 542    TEST_AND_UPDATE(ctx->VertexProgram.TwoSideEnabled,
 543                    enable->VertexProgramTwoSide,
 544                    GL_VERTEX_PROGRAM_TWO_SIDE_NV);
 545
 546 #undef TEST_AND_UPDATE
 547
 548    /* texture unit enables */
 549    for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
 550       if (ctx->Texture.Unit[i].Enabled != enable->Texture[i]) {
 551          ctx->Texture.Unit[i].Enabled = enable->Texture[i];
 552          if (ctx->Driver.Enable) {
 553             if (ctx->Driver.ActiveTexture) {
 554                (*ctx->Driver.ActiveTexture)(ctx, i);
 555             }
 556             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D,
 557                              (GLboolean) (enable->Texture[i] & TEXTURE_1D_BIT) );
 558             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D,
 559                              (GLboolean) (enable->Texture[i] & TEXTURE_2D_BIT) );
 560             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D,
 561                              (GLboolean) (enable->Texture[i] & TEXTURE_3D_BIT) );
 562             if (ctx->Extensions.ARB_texture_cube_map)
 563                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_CUBE_MAP_ARB,
 564                           (GLboolean) (enable->Texture[i] & TEXTURE_CUBE_BIT) );
 565             if (ctx->Extensions.NV_texture_rectangle)
 566                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_RECTANGLE_NV,
 567                           (GLboolean) (enable->Texture[i] & TEXTURE_RECT_BIT) );
 568          }
 569       }
 570
 571       if (ctx->Texture.Unit[i].TexGenEnabled != enable->TexGen[i]) {
 572          ctx->Texture.Unit[i].TexGenEnabled = enable->TexGen[i];
 573          if (ctx->Driver.Enable) {
 574             if (ctx->Driver.ActiveTexture) {
 575                (*ctx->Driver.ActiveTexture)(ctx, i);
 576             }
 577             if (enable->TexGen[i] & S_BIT)
 578                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_TRUE);
 579             else
 580                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_FALSE);
 581             if (enable->TexGen[i] & T_BIT)
 582                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_TRUE);
 583             else
 584                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_FALSE);
 585             if (enable->TexGen[i] & R_BIT)
 586                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_TRUE);
 587             else
 588                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_FALSE);
 589             if (enable->TexGen[i] & Q_BIT)
 590                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
 591             else
 592                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
 593          }
 594       }
 595
 596       /* GL_SGI_texture_color_table */
 597       ctx->Texture.Unit[i].ColorTableEnabled = enable->TextureColorTable[i];
 598    }
 599
 600    if (ctx->Driver.ActiveTexture) {
 601       (*ctx->Driver.ActiveTexture)(ctx, ctx->Texture.CurrentUnit);
 602    }
 603 }
 604
 605
 606 static void
 607 pop_texture_group(GLcontext *ctx, const struct gl_texture_attrib *texAttrib)
 608 {
 609    GLuint u;
 610
 611    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 612       const struct gl_texture_unit *unit = &texAttrib->Unit[u];
 613       GLuint i;
 614
 615       _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + u);
 616       _mesa_set_enable(ctx, GL_TEXTURE_1D,
 617               (GLboolean) (unit->Enabled & TEXTURE_1D_BIT ? GL_TRUE : GL_FALSE));
 618       _mesa_set_enable(ctx, GL_TEXTURE_2D,
 619               (GLboolean) (unit->Enabled & TEXTURE_2D_BIT ? GL_TRUE : GL_FALSE));
 620       _mesa_set_enable(ctx, GL_TEXTURE_3D,
 621               (GLboolean) (unit->Enabled & TEXTURE_3D_BIT ? GL_TRUE : GL_FALSE));
 622       if (ctx->Extensions.ARB_texture_cube_map) {
 623          _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP_ARB,
 624              (GLboolean) (unit->Enabled & TEXTURE_CUBE_BIT ? GL_TRUE : GL_FALSE));
 625       }
 626       if (ctx->Extensions.NV_texture_rectangle) {
 627          _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_NV,
 628              (GLboolean) (unit->Enabled & TEXTURE_RECT_BIT ? GL_TRUE : GL_FALSE));
 629       }
 630       if (ctx->Extensions.SGI_texture_color_table) {
 631          _mesa_set_enable(ctx, GL_TEXTURE_COLOR_TABLE_SGI,
 632                           unit->ColorTableEnabled);
 633       }
 634       _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->EnvMode);
 635       _mesa_TexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, unit->EnvColor);
 636       _mesa_TexGeni(GL_S, GL_TEXTURE_GEN_MODE, unit->GenModeS);
 637       _mesa_TexGeni(GL_T, GL_TEXTURE_GEN_MODE, unit->GenModeT);
 638       _mesa_TexGeni(GL_R, GL_TEXTURE_GEN_MODE, unit->GenModeR);
 639       _mesa_TexGeni(GL_Q, GL_TEXTURE_GEN_MODE, unit->GenModeQ);
 640       _mesa_TexGenfv(GL_S, GL_OBJECT_PLANE, unit->ObjectPlaneS);
 641       _mesa_TexGenfv(GL_T, GL_OBJECT_PLANE, unit->ObjectPlaneT);
 642       _mesa_TexGenfv(GL_R, GL_OBJECT_PLANE, unit->ObjectPlaneR);
 643       _mesa_TexGenfv(GL_Q, GL_OBJECT_PLANE, unit->ObjectPlaneQ);
 644       _mesa_TexGenfv(GL_S, GL_EYE_PLANE, unit->EyePlaneS);
 645       _mesa_TexGenfv(GL_T, GL_EYE_PLANE, unit->EyePlaneT);
 646       _mesa_TexGenfv(GL_R, GL_EYE_PLANE, unit->EyePlaneR);
 647       _mesa_TexGenfv(GL_Q, GL_EYE_PLANE, unit->EyePlaneQ);
 648       if (ctx->Extensions.EXT_texture_lod_bias) {
 649          _mesa_TexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
 650                        GL_TEXTURE_LOD_BIAS_EXT, unit->LodBias);
 651       }
 652       if (ctx->Extensions.EXT_texture_env_combine ||
 653           ctx->Extensions.ARB_texture_env_combine) {
 654          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB,
 655                        unit->Combine.ModeRGB);
 656          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA,
 657                        unit->Combine.ModeA);
 658          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB,
 659                        unit->Combine.SourceRGB[0]);
 660          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB,
 661                        unit->Combine.SourceRGB[1]);
 662          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB,
 663                        unit->Combine.SourceRGB[2]);
 664          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA,
 665                        unit->Combine.SourceA[0]);
 666          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA,
 667                        unit->Combine.SourceA[1]);
 668          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA,
 669                        unit->Combine.SourceA[2]);
 670          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB,
 671                        unit->Combine.OperandRGB[0]);
 672          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB,
 673                        unit->Combine.OperandRGB[1]);
 674          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB,
 675                        unit->Combine.OperandRGB[2]);
 676          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA,
 677                        unit->Combine.OperandA[0]);
 678          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA,
 679                        unit->Combine.OperandA[1]);
 680          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA,
 681                        unit->Combine.OperandA[2]);
 682          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE,
 683                        1 << unit->Combine.ScaleShiftRGB);
 684          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE,
 685                        1 << unit->Combine.ScaleShiftA);
 686       }
 687
 688       /* Restore texture object state */
 689       for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
 690          GLenum target = 0;
 691          const struct gl_texture_object *obj = NULL;
 692          GLfloat bordColor[4];
 693
 694          switch (i) {
 695          case 0:
 696             target = GL_TEXTURE_1D;
 697             obj = &unit->Saved1D;
 698             break;
 699          case 1:
 700             target = GL_TEXTURE_2D;
 701             obj = &unit->Saved2D;
 702             break;
 703          case 2:
 704             target = GL_TEXTURE_3D;
 705             obj = &unit->Saved3D;
 706             break;
 707          case 3:
 708             if (!ctx->Extensions.ARB_texture_cube_map)
 709                continue;
 710             target = GL_TEXTURE_CUBE_MAP_ARB;
 711             obj = &unit->SavedCubeMap;
 712             break;
 713          case 4:
 714             if (!ctx->Extensions.NV_texture_rectangle)
 715                continue;
 716             target = GL_TEXTURE_RECTANGLE_NV;
 717             obj = &unit->SavedRect;
 718             break;
 719          default:
 720             ; /* silence warnings */
 721          }
 722
 723          _mesa_BindTexture(target, obj->Name);
 724
 725          bordColor[0] = CHAN_TO_FLOAT(obj->BorderColor[0]);
 726          bordColor[1] = CHAN_TO_FLOAT(obj->BorderColor[1]);
 727          bordColor[2] = CHAN_TO_FLOAT(obj->BorderColor[2]);
 728          bordColor[3] = CHAN_TO_FLOAT(obj->BorderColor[3]);
 729
 730          _mesa_TexParameterf(target, GL_TEXTURE_PRIORITY, obj->Priority);
 731          _mesa_TexParameterfv(target, GL_TEXTURE_BORDER_COLOR, bordColor);
 732          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, obj->WrapS);
 733          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, obj->WrapT);
 734          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, obj->WrapR);
 735          _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, obj->MinFilter);
 736          _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, obj->MagFilter);
 737          _mesa_TexParameterf(target, GL_TEXTURE_MIN_LOD, obj->MinLod);
 738          _mesa_TexParameterf(target, GL_TEXTURE_MAX_LOD, obj->MaxLod);
 739          _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, obj->BaseLevel);
 740          _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, obj->MaxLevel);
 741          if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 742             _mesa_TexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT,
 743                                 obj->MaxAnisotropy);
 744          }
 745          if (ctx->Extensions.SGIX_shadow) {
 746             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_SGIX,
 747                                 obj->CompareFlag);
 748             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_OPERATOR_SGIX,
 749                                 obj->CompareOperator);
 750          }
 751          if (ctx->Extensions.SGIX_shadow_ambient) {
 752             _mesa_TexParameterf(target, GL_SHADOW_AMBIENT_SGIX,
 753                                 obj->ShadowAmbient);
 754          }
 755
 756       }
 757    }
 758    _mesa_ActiveTextureARB(GL_TEXTURE0_ARB
 759                           + texAttrib->CurrentUnit);
 760
 761    /* "un-bump" the texture object reference counts.  We did that so they
 762     * wouldn't inadvertantly get deleted while they were still referenced
 763     * inside the attribute state stack.
 764     */
 765    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 766       ctx->Texture.Unit[u].Current1D->RefCount--;
 767       ctx->Texture.Unit[u].Current2D->RefCount--;
 768       ctx->Texture.Unit[u].Current3D->RefCount--;
 769       ctx->Texture.Unit[u].CurrentCubeMap->RefCount--;
 770       ctx->Texture.Unit[u].CurrentRect->RefCount--;
 771    }
 772 }
 773
 774
 775 /*
 776  * This function is kind of long just because we have to call a lot
 777  * of device driver functions to update device driver state.
 778  *
 779  * XXX As it is now, most of the pop-code calls immediate-mode Mesa functions
 780  * in order to restore GL state.  This isn't terribly efficient but it
 781  * ensures that dirty flags and any derived state gets updated correctly.
 782  * We could at least check if the value to restore equals the current value
 783  * and then skip the Mesa call.
 784  */
 785 void GLAPIENTRY
 786 _mesa_PopAttrib(void)
 787 {
 788    struct gl_attrib_node *attr, *next;
 789    GET_CURRENT_CONTEXT(ctx);
 790    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 791
 792    if (ctx->AttribStackDepth == 0) {
 793       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
 794       return;
 795    }
 796
 797    ctx->AttribStackDepth--;
 798    attr = ctx->AttribStack[ctx->AttribStackDepth];
 799
 800    while (attr) {
 801
 802       if (MESA_VERBOSE & VERBOSE_API) {
 803          _mesa_debug(ctx, "glPopAttrib %s\n",
 804                      _mesa_lookup_enum_by_nr(attr->kind));
 805       }
 806
 807       switch (attr->kind) {
 808          case GL_ACCUM_BUFFER_BIT:
 809             {
 810                const struct gl_accum_attrib *accum;
 811                accum = (const struct gl_accum_attrib *) attr->data;
 812                _mesa_ClearAccum(accum->ClearColor[0],
 813                                 accum->ClearColor[1],
 814                                 accum->ClearColor[2],
 815                                 accum->ClearColor[3]);
 816             }
 817             break;
 818          case GL_COLOR_BUFFER_BIT:
 819             {
 820                const struct gl_colorbuffer_attrib *color;
 821                color = (const struct gl_colorbuffer_attrib *) attr->data;
 822                _mesa_ClearIndex((GLfloat) color->ClearIndex);
 823                _mesa_ClearColor(color->ClearColor[0],
 824                                 color->ClearColor[1],
 825                                 color->ClearColor[2],
 826                                 color->ClearColor[3]);
 827                _mesa_IndexMask(color->IndexMask);
 828                _mesa_ColorMask((GLboolean) (color->ColorMask[0] != 0),
 829                                (GLboolean) (color->ColorMask[1] != 0),
 830                                (GLboolean) (color->ColorMask[2] != 0),
 831                                (GLboolean) (color->ColorMask[3] != 0));
 832                _mesa_DrawBuffer(color->DrawBuffer);
 833                _mesa_set_enable(ctx, GL_ALPHA_TEST, color->AlphaEnabled);
 834                _mesa_AlphaFunc(color->AlphaFunc, color->AlphaRef);
 835                _mesa_set_enable(ctx, GL_BLEND, color->BlendEnabled);
 836                _mesa_BlendFuncSeparateEXT(color->BlendSrcRGB,
 837                                           color->BlendDstRGB,
 838                                           color->BlendSrcA,
 839                                           color->BlendDstA);
 840                /* This special case is because glBlendEquationSeparateEXT
 841                 * cannot take GL_LOGIC_OP as a parameter.
 842                 */
 843                if ( color->BlendEquationRGB == color->BlendEquationA ) {
 844                   _mesa_BlendEquation(color->BlendEquationRGB);
 845                }
 846                else {
 847                   _mesa_BlendEquationSeparateEXT(color->BlendEquationRGB,
 848                                                  color->BlendEquationA);
 849                }
 850                _mesa_BlendColor(color->BlendColor[0],
 851                                 color->BlendColor[1],
 852                                 color->BlendColor[2],
 853                                 color->BlendColor[3]);
 854                _mesa_LogicOp(color->LogicOp);
 855                _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP,
 856                                 color->ColorLogicOpEnabled);
 857                _mesa_set_enable(ctx, GL_INDEX_LOGIC_OP,
 858                                 color->IndexLogicOpEnabled);
 859                _mesa_set_enable(ctx, GL_DITHER, color->DitherFlag);
 860             }
 861             break;
 862          case GL_CURRENT_BIT:
 863             FLUSH_CURRENT( ctx, 0 );
 864             MEMCPY( &ctx->Current, attr->data,
 865                     sizeof(struct gl_current_attrib) );
 866             break;
 867          case GL_DEPTH_BUFFER_BIT:
 868             {
 869                const struct gl_depthbuffer_attrib *depth;
 870                depth = (const struct gl_depthbuffer_attrib *) attr->data;
 871                _mesa_DepthFunc(depth->Func);
 872                _mesa_ClearDepth(depth->Clear);
 873                _mesa_set_enable(ctx, GL_DEPTH_TEST, depth->Test);
 874                _mesa_DepthMask(depth->Mask);
 875                if (ctx->Extensions.HP_occlusion_test)
 876                   _mesa_set_enable(ctx, GL_OCCLUSION_TEST_HP,
 877                                    depth->OcclusionTest);
 878             }
 879             break;
 880          case GL_ENABLE_BIT:
 881             {
 882                const struct gl_enable_attrib *enable;
 883                enable = (const struct gl_enable_attrib *) attr->data;
 884                pop_enable_group(ctx, enable);
 885                ctx->NewState |= _NEW_ALL;
 886             }
 887             break;
 888          case GL_EVAL_BIT:
 889             MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
 890             ctx->NewState |= _NEW_EVAL;
 891             break;
 892          case GL_FOG_BIT:
 893             {
 894                const struct gl_fog_attrib *fog;
 895                fog = (const struct gl_fog_attrib *) attr->data;
 896                _mesa_set_enable(ctx, GL_FOG, fog->Enabled);
 897                _mesa_Fogfv(GL_FOG_COLOR, fog->Color);
 898                _mesa_Fogf(GL_FOG_DENSITY, fog->Density);
 899                _mesa_Fogf(GL_FOG_START, fog->Start);
 900                _mesa_Fogf(GL_FOG_END, fog->End);
 901                _mesa_Fogf(GL_FOG_INDEX, fog->Index);
 902                _mesa_Fogi(GL_FOG_MODE, fog->Mode);
 903             }
 904             break;
 905          case GL_HINT_BIT:
 906             {
 907                const struct gl_hint_attrib *hint;
 908                hint = (const struct gl_hint_attrib *) attr->data;
 909                _mesa_Hint(GL_PERSPECTIVE_CORRECTION_HINT,
 910                           hint->PerspectiveCorrection );
 911                _mesa_Hint(GL_POINT_SMOOTH_HINT, hint->PointSmooth);
 912                _mesa_Hint(GL_LINE_SMOOTH_HINT, hint->LineSmooth);
 913                _mesa_Hint(GL_POLYGON_SMOOTH_HINT, hint->PolygonSmooth);
 914                _mesa_Hint(GL_FOG_HINT, hint->Fog);
 915                _mesa_Hint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT,
 916                           hint->ClipVolumeClipping);
 917                if (ctx->Extensions.ARB_texture_compression)
 918                   _mesa_Hint(GL_TEXTURE_COMPRESSION_HINT_ARB,
 919                              hint->TextureCompression);
 920             }
 921             break;
 922          case GL_LIGHTING_BIT:
 923             {
 924                GLuint i;
 925                const struct gl_light_attrib *light;
 926                light = (const struct gl_light_attrib *) attr->data;
 927                /* lighting enable */
 928                _mesa_set_enable(ctx, GL_LIGHTING, light->Enabled);
 929                /* per-light state */
 930
 931                if (ctx->ModelviewMatrixStack.Top->flags & MAT_DIRTY_INVERSE)
 932                   _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
 933
 934                for (i = 0; i < MAX_LIGHTS; i++) {
 935                   GLenum lgt = (GLenum) (GL_LIGHT0 + i);
 936                   const struct gl_light *l = &light->Light[i];
 937                   GLfloat tmp[4];
 938                   _mesa_set_enable(ctx, lgt, l->Enabled);
 939                   _mesa_Lightfv( lgt, GL_AMBIENT, l->Ambient );
 940                   _mesa_Lightfv( lgt, GL_DIFFUSE, l->Diffuse );
 941                   _mesa_Lightfv( lgt, GL_SPECULAR, l->Specular );
 942                   TRANSFORM_POINT( tmp, ctx->ModelviewMatrixStack.Top->inv, l->EyePosition );
 943                   _mesa_Lightfv( lgt, GL_POSITION, tmp );
 944                   TRANSFORM_POINT( tmp, ctx->ModelviewMatrixStack.Top->m, l->EyeDirection );
 945                   _mesa_Lightfv( lgt, GL_SPOT_DIRECTION, tmp );
 946                   _mesa_Lightfv( lgt, GL_SPOT_EXPONENT, &l->SpotExponent );
 947                   _mesa_Lightfv( lgt, GL_SPOT_CUTOFF, &l->SpotCutoff );
 948                   _mesa_Lightfv( lgt, GL_CONSTANT_ATTENUATION,
 949                                  &l->ConstantAttenuation );
 950                   _mesa_Lightfv( lgt, GL_LINEAR_ATTENUATION,
 951                                  &l->LinearAttenuation );
 952                   _mesa_Lightfv( lgt, GL_QUADRATIC_ATTENUATION,
 953                                  &l->QuadraticAttenuation );
 954                }
 955                /* light model */
 956                _mesa_LightModelfv(GL_LIGHT_MODEL_AMBIENT,
 957                                   light->Model.Ambient);
 958                _mesa_LightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER,
 959                                  (GLfloat) light->Model.LocalViewer);
 960                _mesa_LightModelf(GL_LIGHT_MODEL_TWO_SIDE,
 961                                  (GLfloat) light->Model.TwoSide);
 962                _mesa_LightModelf(GL_LIGHT_MODEL_COLOR_CONTROL,
 963                                  (GLfloat) light->Model.ColorControl);
 964                /* materials */
 965                MEMCPY(&ctx->Light.Material, &light->Material,
 966                       sizeof(struct gl_material));
 967                /* shade model */
 968                _mesa_ShadeModel(light->ShadeModel);
 969                /* color material */
 970                _mesa_ColorMaterial(light->ColorMaterialFace,
 971                                    light->ColorMaterialMode);
 972                _mesa_set_enable(ctx, GL_COLOR_MATERIAL,
 973                                 light->ColorMaterialEnabled);
 974             }
 975             break;
 976          case GL_LINE_BIT:
 977             {
 978                const struct gl_line_attrib *line;
 979                line = (const struct gl_line_attrib *) attr->data;
 980                _mesa_set_enable(ctx, GL_LINE_SMOOTH, line->SmoothFlag);
 981                _mesa_set_enable(ctx, GL_LINE_STIPPLE, line->StippleFlag);
 982                _mesa_LineStipple(line->StippleFactor, line->StipplePattern);
 983                _mesa_LineWidth(line->Width);
 984             }
 985             break;
 986          case GL_LIST_BIT:
 987             MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
 988             break;
 989          case GL_PIXEL_MODE_BIT:
 990             MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
 991             ctx->NewState |= _NEW_PIXEL;
 992             break;
 993          case GL_POINT_BIT:
 994             {
 995                const struct gl_point_attrib *point;
 996                point = (const struct gl_point_attrib *) attr->data;
 997                _mesa_PointSize(point->Size);
 998                _mesa_set_enable(ctx, GL_POINT_SMOOTH, point->SmoothFlag);
 999                if (ctx->Extensions.EXT_point_parameters) {
1000                   _mesa_PointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT,
1001                                             point->Params);
1002                   _mesa_PointParameterfEXT(GL_POINT_SIZE_MIN_EXT,
1003                                            point->MinSize);
1004                   _mesa_PointParameterfEXT(GL_POINT_SIZE_MAX_EXT,
1005                                            point->MaxSize);
1006                   _mesa_PointParameterfEXT(GL_POINT_FADE_THRESHOLD_SIZE_EXT,
1007                                            point->Threshold);
1008                }
1009                if (ctx->Extensions.NV_point_sprite
1010                    || ctx->Extensions.ARB_point_sprite) {
1011                   GLuint u;
1012                   for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
1013                      _mesa_TexEnvi(GL_POINT_SPRITE_NV, GL_COORD_REPLACE_NV,
1014                                    (GLint) point->CoordReplace[u]);
1015                   }
1016                   _mesa_set_enable(ctx, GL_POINT_SPRITE_NV,point->PointSprite);
1017                   _mesa_PointParameteriNV(GL_POINT_SPRITE_R_MODE_NV,
1018                                           ctx->Point.SpriteRMode);
1019                }
1020             }
1021             break;
1022          case GL_POLYGON_BIT:
1023             {
1024                const struct gl_polygon_attrib *polygon;
1025                polygon = (const struct gl_polygon_attrib *) attr->data;
1026                _mesa_CullFace(polygon->CullFaceMode);
1027                _mesa_FrontFace(polygon->FrontFace);
1028                _mesa_PolygonMode(GL_FRONT, polygon->FrontMode);
1029                _mesa_PolygonMode(GL_BACK, polygon->BackMode);
1030                _mesa_PolygonOffset(polygon->OffsetFactor,
1031                                    polygon->OffsetUnits);
1032                _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, polygon->SmoothFlag);
1033                _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, polygon->StippleFlag);
1034                _mesa_set_enable(ctx, GL_CULL_FACE, polygon->CullFlag);
1035                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_POINT,
1036                                 polygon->OffsetPoint);
1037                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_LINE,
1038                                 polygon->OffsetLine);
1039                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL,
1040                                 polygon->OffsetFill);
1041             }
1042             break;
1043          case GL_POLYGON_STIPPLE_BIT:
1044             MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
1045             ctx->NewState |= _NEW_POLYGONSTIPPLE;
1046             if (ctx->Driver.PolygonStipple)
1047                ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data );
1048             break;
1049          case GL_SCISSOR_BIT:
1050             {
1051                const struct gl_scissor_attrib *scissor;
1052                scissor = (const struct gl_scissor_attrib *) attr->data;
1053                _mesa_Scissor(scissor->X, scissor->Y,
1054                              scissor->Width, scissor->Height);
1055                _mesa_set_enable(ctx, GL_SCISSOR_TEST, scissor->Enabled);
1056             }
1057             break;
1058          case GL_STENCIL_BUFFER_BIT:
1059             {
1060                const GLint face = 0; /* XXX stencil two side */
1061                const struct gl_stencil_attrib *stencil;
1062                stencil = (const struct gl_stencil_attrib *) attr->data;
1063                _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);
1064                _mesa_ClearStencil(stencil->Clear);
1065                _mesa_StencilFunc(stencil->Function[face], stencil->Ref[face],
1066                                  stencil->ValueMask[face]);
1067                _mesa_StencilMask(stencil->WriteMask[face]);
1068                _mesa_StencilOp(stencil->FailFunc[face],
1069                                stencil->ZFailFunc[face],
1070                                stencil->ZPassFunc[face]);
1071             }
1072             break;
1073          case GL_TRANSFORM_BIT:
1074             {
1075                GLuint i;
1076                const struct gl_transform_attrib *xform;
1077                xform = (const struct gl_transform_attrib *) attr->data;
1078                _mesa_MatrixMode(xform->MatrixMode);
1079
1080                if (ctx->ProjectionMatrixStack.Top->flags & MAT_DIRTY)
1081                   _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
1082
1083                /* restore clip planes */
1084                for (i = 0; i < MAX_CLIP_PLANES; i++) {
1085                   const GLuint mask = 1 << 1;
1086                   const GLfloat *eyePlane = xform->EyeUserPlane[i];
1087                   COPY_4V(ctx->Transform.EyeUserPlane[i], eyePlane);
1088                   if (xform->ClipPlanesEnabled & mask) {
1089                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE);
1090                   }
1091                   else {
1092                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_FALSE);
1093                   }
1094                   if (ctx->Driver.ClipPlane)
1095                      ctx->Driver.ClipPlane( ctx, GL_CLIP_PLANE0 + i, eyePlane );
1096                }
1097
1098                /* normalize/rescale */
1099                if (xform->Normalize != ctx->Transform.Normalize)
1100                   _mesa_set_enable(ctx, GL_NORMALIZE,ctx->Transform.Normalize);
1101                if (xform->RescaleNormals != ctx->Transform.RescaleNormals)
1102                   _mesa_set_enable(ctx, GL_RESCALE_NORMAL_EXT,
1103                                    ctx->Transform.RescaleNormals);
1104             }
1105             break;
1106          case GL_TEXTURE_BIT:
1107             /* Take care of texture object reference counters */
1108             {
1109                const struct gl_texture_attrib *texture;
1110                texture = (const struct gl_texture_attrib *) attr->data;
1111                pop_texture_group(ctx, texture);
1112                ctx->NewState |= _NEW_TEXTURE;
1113             }
1114             break;
1115          case GL_VIEWPORT_BIT:
1116             {
1117                const struct gl_viewport_attrib *vp;
1118                vp = (const struct gl_viewport_attrib *) attr->data;
1119                _mesa_Viewport(vp->X, vp->Y, vp->Width, vp->Height);
1120                _mesa_DepthRange(vp->Near, vp->Far);
1121             }
1122             break;
1123          case GL_MULTISAMPLE_BIT_ARB:
1124             {
1125                const struct gl_multisample_attrib *ms;
1126                ms = (const struct gl_multisample_attrib *) attr->data;
1127                _mesa_SampleCoverageARB(ms->SampleCoverageValue,
1128                                        ms->SampleCoverageInvert);
1129             }
1130             break;
1131
1132          default:
1133             _mesa_problem( ctx, "Bad attrib flag in PopAttrib");
1134             break;
1135       }
1136
1137       next = attr->next;
1138       FREE( attr->data );
1139       FREE( attr );
1140       attr = next;
1141    }
1142 }
1143
1144
1145 /**
1146  * Helper for incrementing/decrementing vertex buffer object reference
1147  * counts when pushing/popping the GL_CLIENT_VERTEX_ARRAY_BIT attribute group.
1148  */
1149 static void
1150 adjust_buffer_object_ref_counts(struct gl_array_attrib *array, GLint step)
1151 {
1152    GLuint i;
1153    array->Vertex.BufferObj->RefCount += step;
1154    array->Normal.BufferObj->RefCount += step;
1155    array->Color.BufferObj->RefCount += step;
1156    array->SecondaryColor.BufferObj->RefCount += step;
1157    array->FogCoord.BufferObj->RefCount += step;
1158    array->Index.BufferObj->RefCount += step;
1159    array->EdgeFlag.BufferObj->RefCount += step;
1160    for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++)
1161       array->TexCoord[i].BufferObj->RefCount += step;
1162    for (i = 0; i < VERT_ATTRIB_MAX; i++)
1163       array->VertexAttrib[i].BufferObj->RefCount += step;
1164
1165    array->ArrayBufferObj->RefCount += step;
1166    array->ElementArrayBufferObj->RefCount += step;
1167 }
1168
1169
1170 #define GL_CLIENT_PACK_BIT (1<<20)
1171 #define GL_CLIENT_UNPACK_BIT (1<<21)
1172
1173
1174 void GLAPIENTRY
1175 _mesa_PushClientAttrib(GLbitfield mask)
1176 {
1177    struct gl_attrib_node *newnode;
1178    struct gl_attrib_node *head;
1179
1180    GET_CURRENT_CONTEXT(ctx);
1181    ASSERT_OUTSIDE_BEGIN_END(ctx);
1182
1183    if (ctx->ClientAttribStackDepth >= MAX_CLIENT_ATTRIB_STACK_DEPTH) {
1184       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
1185       return;
1186    }
1187
1188    /* Build linked list of attribute nodes which save all attribute */
1189    /* groups specified by the mask. */
1190    head = NULL;
1191
1192    if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
1193       struct gl_pixelstore_attrib *attr;
1194       /* packing attribs */
1195       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1196       MEMCPY( attr, &ctx->Pack, sizeof(struct gl_pixelstore_attrib) );
1197       newnode = new_attrib_node( GL_CLIENT_PACK_BIT );
1198       newnode->data = attr;
1199       newnode->next = head;
1200       head = newnode;
1201       /* unpacking attribs */
1202       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1203       MEMCPY( attr, &ctx->Unpack, sizeof(struct gl_pixelstore_attrib) );
1204       newnode = new_attrib_node( GL_CLIENT_UNPACK_BIT );
1205       newnode->data = attr;
1206       newnode->next = head;
1207       head = newnode;
1208    }
1209    if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
1210       struct gl_array_attrib *attr;
1211       attr = MALLOC_STRUCT( gl_array_attrib );
1212       MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
1213       newnode = new_attrib_node( GL_CLIENT_VERTEX_ARRAY_BIT );
1214       newnode->data = attr;
1215       newnode->next = head;
1216       head = newnode;
1217       /* bump reference counts on buffer objects */
1218       adjust_buffer_object_ref_counts(&ctx->Array, 1);
1219    }
1220
1221    ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
1222    ctx->ClientAttribStackDepth++;
1223 }
1224
1225
1226
1227
1228 void GLAPIENTRY
1229 _mesa_PopClientAttrib(void)
1230 {
1231    struct gl_attrib_node *attr, *next;
1232
1233    GET_CURRENT_CONTEXT(ctx);
1234    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1235
1236    if (ctx->ClientAttribStackDepth == 0) {
1237       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
1238       return;
1239    }
1240
1241    ctx->ClientAttribStackDepth--;
1242    attr = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
1243
1244    while (attr) {
1245       switch (attr->kind) {
1246          case GL_CLIENT_PACK_BIT:
1247             MEMCPY( &ctx->Pack, attr->data,
1248                     sizeof(struct gl_pixelstore_attrib) );
1249             ctx->NewState |= _NEW_PACKUNPACK;
1250             break;
1251          case GL_CLIENT_UNPACK_BIT:
1252             MEMCPY( &ctx->Unpack, attr->data,
1253                     sizeof(struct gl_pixelstore_attrib) );
1254             ctx->NewState |= _NEW_PACKUNPACK;
1255             break;
1256          case GL_CLIENT_VERTEX_ARRAY_BIT:
1257             adjust_buffer_object_ref_counts(&ctx->Array, -1);
1258             MEMCPY( &ctx->Array, attr->data,
1259                     sizeof(struct gl_array_attrib) );
1260             /* decrement reference counts on buffer objects */
1261             ctx->NewState |= _NEW_ARRAY;
1262             break;
1263          default:
1264             _mesa_problem( ctx, "Bad attrib flag in PopClientAttrib");
1265             break;
1266       }
1267
1268       next = attr->next;
1269       FREE( attr->data );
1270       FREE( attr );
1271       attr = next;
1272    }
1273 }
1274
1275
1276 void _mesa_init_attrib( GLcontext *ctx )
1277 {
1278    /* Renderer and client attribute stacks */
1279    ctx->AttribStackDepth = 0;
1280    ctx->ClientAttribStackDepth = 0;
1281 }