src/mesa/main/attrib.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.4.1
   4  *
   5  * Copyright (C) 1999-2005  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 "bufferobj.h"
  32 #include "colormac.h"
  33 #include "colortab.h"
  34 #include "context.h"
  35 #include "depth.h"
  36 #include "enable.h"
  37 #include "enums.h"
  38 #include "fog.h"
  39 #include "hint.h"
  40 #include "light.h"
  41 #include "lines.h"
  42 #include "matrix.h"
  43 #include "points.h"
  44 #include "polygon.h"
  45 #include "simple_list.h"
  46 #include "stencil.h"
  47 #include "texobj.h"
  48 #include "texstate.h"
  49 #include "mtypes.h"
  50 #include "math/m_xform.h"
  51
  52
  53 /*
  54  * Allocate a new attribute state node.  These nodes have a
  55  * "kind" value and a pointer to a struct of state data.
  56  */
  57 static struct gl_attrib_node *
  58 new_attrib_node( GLbitfield kind )
  59 {
  60    struct gl_attrib_node *an = MALLOC_STRUCT(gl_attrib_node);
  61    if (an) {
  62       an->kind = kind;
  63    }
  64    return an;
  65 }
  66
  67
  68 void GLAPIENTRY
  69 _mesa_PushAttrib(GLbitfield mask)
  70 {
  71    struct gl_attrib_node *newnode;
  72    struct gl_attrib_node *head;
  73
  74    GET_CURRENT_CONTEXT(ctx);
  75    ASSERT_OUTSIDE_BEGIN_END(ctx);
  76
  77    if (MESA_VERBOSE & VERBOSE_API)
  78       _mesa_debug(ctx, "glPushAttrib %x\n", (int) mask);
  79
  80    if (ctx->AttribStackDepth >= MAX_ATTRIB_STACK_DEPTH) {
  81       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
  82       return;
  83    }
  84
  85    /* Build linked list of attribute nodes which save all attribute */
  86    /* groups specified by the mask. */
  87    head = NULL;
  88
  89    if (mask & GL_ACCUM_BUFFER_BIT) {
  90       struct gl_accum_attrib *attr;
  91       attr = MALLOC_STRUCT( gl_accum_attrib );
  92       MEMCPY( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );
  93       newnode = new_attrib_node( GL_ACCUM_BUFFER_BIT );
  94       newnode->data = attr;
  95       newnode->next = head;
  96       head = newnode;
  97    }
  98
  99    if (mask & GL_COLOR_BUFFER_BIT) {
 100       struct gl_colorbuffer_attrib *attr;
 101       attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
 102       MEMCPY( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
 103       newnode = new_attrib_node( GL_COLOR_BUFFER_BIT );
 104       newnode->data = attr;
 105       newnode->next = head;
 106       head = newnode;
 107    }
 108
 109    if (mask & GL_CURRENT_BIT) {
 110       struct gl_current_attrib *attr;
 111       FLUSH_CURRENT( ctx, 0 );
 112       attr = MALLOC_STRUCT( gl_current_attrib );
 113       MEMCPY( attr, &ctx->Current, sizeof(struct gl_current_attrib) );
 114       newnode = new_attrib_node( GL_CURRENT_BIT );
 115       newnode->data = attr;
 116       newnode->next = head;
 117       head = newnode;
 118    }
 119
 120    if (mask & GL_DEPTH_BUFFER_BIT) {
 121       struct gl_depthbuffer_attrib *attr;
 122       attr = MALLOC_STRUCT( gl_depthbuffer_attrib );
 123       MEMCPY( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );
 124       newnode = new_attrib_node( GL_DEPTH_BUFFER_BIT );
 125       newnode->data = attr;
 126       newnode->next = head;
 127       head = newnode;
 128    }
 129
 130    if (mask & GL_ENABLE_BIT) {
 131       struct gl_enable_attrib *attr;
 132       GLuint i;
 133       attr = MALLOC_STRUCT( gl_enable_attrib );
 134       /* Copy enable flags from all other attributes into the enable struct. */
 135       attr->AlphaTest = ctx->Color.AlphaEnabled;
 136       attr->AutoNormal = ctx->Eval.AutoNormal;
 137       attr->Blend = ctx->Color.BlendEnabled;
 138       attr->ClipPlanes = ctx->Transform.ClipPlanesEnabled;
 139       attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;
 140       attr->ColorTable = ctx->Pixel.ColorTableEnabled;
 141       attr->PostColorMatrixColorTable = ctx->Pixel.PostColorMatrixColorTableEnabled;
 142       attr->PostConvolutionColorTable = ctx->Pixel.PostConvolutionColorTableEnabled;
 143       attr->Convolution1D = ctx->Pixel.Convolution1DEnabled;
 144       attr->Convolution2D = ctx->Pixel.Convolution2DEnabled;
 145       attr->Separable2D = ctx->Pixel.Separable2DEnabled;
 146       attr->CullFace = ctx->Polygon.CullFlag;
 147       attr->DepthTest = ctx->Depth.Test;
 148       attr->Dither = ctx->Color.DitherFlag;
 149       attr->Fog = ctx->Fog.Enabled;
 150       for (i=0;i<MAX_LIGHTS;i++) {
 151          attr->Light[i] = ctx->Light.Light[i].Enabled;
 152       }
 153       attr->Lighting = ctx->Light.Enabled;
 154       attr->LineSmooth = ctx->Line.SmoothFlag;
 155       attr->LineStipple = ctx->Line.StippleFlag;
 156       attr->Histogram = ctx->Pixel.HistogramEnabled;
 157       attr->MinMax = ctx->Pixel.MinMaxEnabled;
 158       attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
 159       attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
 160       attr->Map1Color4 = ctx->Eval.Map1Color4;
 161       attr->Map1Index = ctx->Eval.Map1Index;
 162       attr->Map1Normal = ctx->Eval.Map1Normal;
 163       attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
 164       attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
 165       attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
 166       attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
 167       attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
 168       attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
 169       MEMCPY(attr->Map1Attrib, ctx->Eval.Map1Attrib, sizeof(ctx->Eval.Map1Attrib));
 170       attr->Map2Color4 = ctx->Eval.Map2Color4;
 171       attr->Map2Index = ctx->Eval.Map2Index;
 172       attr->Map2Normal = ctx->Eval.Map2Normal;
 173       attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
 174       attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
 175       attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
 176       attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
 177       attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
 178       attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
 179       MEMCPY(attr->Map2Attrib, ctx->Eval.Map2Attrib, sizeof(ctx->Eval.Map2Attrib));
 180       attr->Normalize = ctx->Transform.Normalize;
 181       attr->RasterPositionUnclipped = ctx->Transform.RasterPositionUnclipped;
 182       attr->PixelTexture = ctx->Pixel.PixelTextureEnabled;
 183       attr->PointSmooth = ctx->Point.SmoothFlag;
 184       attr->PointSprite = ctx->Point.PointSprite;
 185       attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;
 186       attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;
 187       attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;
 188       attr->PolygonSmooth = ctx->Polygon.SmoothFlag;
 189       attr->PolygonStipple = ctx->Polygon.StippleFlag;
 190       attr->RescaleNormals = ctx->Transform.RescaleNormals;
 191       attr->Scissor = ctx->Scissor.Enabled;
 192       attr->Stencil = ctx->Stencil.Enabled;
 193       attr->StencilTwoSide = ctx->Stencil.TestTwoSide;
 194       attr->MultisampleEnabled = ctx->Multisample.Enabled;
 195       attr->SampleAlphaToCoverage = ctx->Multisample.SampleAlphaToCoverage;
 196       attr->SampleAlphaToOne = ctx->Multisample.SampleAlphaToOne;
 197       attr->SampleCoverage = ctx->Multisample.SampleCoverage;
 198       attr->SampleCoverageInvert = ctx->Multisample.SampleCoverageInvert;
 199       for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 200          attr->Texture[i] = ctx->Texture.Unit[i].Enabled;
 201          attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
 202          attr->TextureColorTable[i] = ctx->Texture.Unit[i].ColorTableEnabled;
 203       }
 204       /* GL_NV_vertex_program */
 205       attr->VertexProgram = ctx->VertexProgram.Enabled;
 206       attr->VertexProgramPointSize = ctx->VertexProgram.PointSizeEnabled;
 207       attr->VertexProgramTwoSide = ctx->VertexProgram.TwoSideEnabled;
 208       newnode = new_attrib_node( GL_ENABLE_BIT );
 209       newnode->data = attr;
 210       newnode->next = head;
 211       head = newnode;
 212    }
 213
 214    if (mask & GL_EVAL_BIT) {
 215       struct gl_eval_attrib *attr;
 216       attr = MALLOC_STRUCT( gl_eval_attrib );
 217       MEMCPY( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
 218       newnode = new_attrib_node( GL_EVAL_BIT );
 219       newnode->data = attr;
 220       newnode->next = head;
 221       head = newnode;
 222    }
 223
 224    if (mask & GL_FOG_BIT) {
 225       struct gl_fog_attrib *attr;
 226       attr = MALLOC_STRUCT( gl_fog_attrib );
 227       MEMCPY( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
 228       newnode = new_attrib_node( GL_FOG_BIT );
 229       newnode->data = attr;
 230       newnode->next = head;
 231       head = newnode;
 232    }
 233
 234    if (mask & GL_HINT_BIT) {
 235       struct gl_hint_attrib *attr;
 236       attr = MALLOC_STRUCT( gl_hint_attrib );
 237       MEMCPY( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
 238       newnode = new_attrib_node( GL_HINT_BIT );
 239       newnode->data = attr;
 240       newnode->next = head;
 241       head = newnode;
 242    }
 243
 244    if (mask & GL_LIGHTING_BIT) {
 245       struct gl_light_attrib *attr;
 246       FLUSH_CURRENT(ctx, 0);    /* flush material changes */
 247       attr = MALLOC_STRUCT( gl_light_attrib );
 248       MEMCPY( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
 249       newnode = new_attrib_node( GL_LIGHTING_BIT );
 250       newnode->data = attr;
 251       newnode->next = head;
 252       head = newnode;
 253    }
 254
 255    if (mask & GL_LINE_BIT) {
 256       struct gl_line_attrib *attr;
 257       attr = MALLOC_STRUCT( gl_line_attrib );
 258       MEMCPY( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
 259       newnode = new_attrib_node( GL_LINE_BIT );
 260       newnode->data = attr;
 261       newnode->next = head;
 262       head = newnode;
 263    }
 264
 265    if (mask & GL_LIST_BIT) {
 266       struct gl_list_attrib *attr;
 267       attr = MALLOC_STRUCT( gl_list_attrib );
 268       MEMCPY( attr, &ctx->List, sizeof(struct gl_list_attrib) );
 269       newnode = new_attrib_node( GL_LIST_BIT );
 270       newnode->data = attr;
 271       newnode->next = head;
 272       head = newnode;
 273    }
 274
 275    if (mask & GL_PIXEL_MODE_BIT) {
 276       struct gl_pixel_attrib *attr;
 277       attr = MALLOC_STRUCT( gl_pixel_attrib );
 278       MEMCPY( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
 279       newnode = new_attrib_node( GL_PIXEL_MODE_BIT );
 280       newnode->data = attr;
 281       newnode->next = head;
 282       head = newnode;
 283    }
 284
 285    if (mask & GL_POINT_BIT) {
 286       struct gl_point_attrib *attr;
 287       attr = MALLOC_STRUCT( gl_point_attrib );
 288       MEMCPY( attr, &ctx->Point, sizeof(struct gl_point_attrib) );
 289       newnode = new_attrib_node( GL_POINT_BIT );
 290       newnode->data = attr;
 291       newnode->next = head;
 292       head = newnode;
 293    }
 294
 295    if (mask & GL_POLYGON_BIT) {
 296       struct gl_polygon_attrib *attr;
 297       attr = MALLOC_STRUCT( gl_polygon_attrib );
 298       MEMCPY( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );
 299       newnode = new_attrib_node( GL_POLYGON_BIT );
 300       newnode->data = attr;
 301       newnode->next = head;
 302       head = newnode;
 303    }
 304
 305    if (mask & GL_POLYGON_STIPPLE_BIT) {
 306       GLuint *stipple;
 307       stipple = (GLuint *) MALLOC( 32*sizeof(GLuint) );
 308       MEMCPY( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );
 309       newnode = new_attrib_node( GL_POLYGON_STIPPLE_BIT );
 310       newnode->data = stipple;
 311       newnode->next = head;
 312       head = newnode;
 313    }
 314
 315    if (mask & GL_SCISSOR_BIT) {
 316       struct gl_scissor_attrib *attr;
 317       attr = MALLOC_STRUCT( gl_scissor_attrib );
 318       MEMCPY( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );
 319       newnode = new_attrib_node( GL_SCISSOR_BIT );
 320       newnode->data = attr;
 321       newnode->next = head;
 322       head = newnode;
 323    }
 324
 325    if (mask & GL_STENCIL_BUFFER_BIT) {
 326       struct gl_stencil_attrib *attr;
 327       attr = MALLOC_STRUCT( gl_stencil_attrib );
 328       MEMCPY( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );
 329       newnode = new_attrib_node( GL_STENCIL_BUFFER_BIT );
 330       newnode->data = attr;
 331       newnode->next = head;
 332       head = newnode;
 333    }
 334
 335    if (mask & GL_TEXTURE_BIT) {
 336       struct gl_texture_attrib *attr;
 337       GLuint u;
 338       /* Bump the texture object reference counts so that they don't
 339        * inadvertantly get deleted.
 340        */
 341       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 342          ctx->Texture.Unit[u].Current1D->RefCount++;
 343          ctx->Texture.Unit[u].Current2D->RefCount++;
 344          ctx->Texture.Unit[u].Current3D->RefCount++;
 345          ctx->Texture.Unit[u].CurrentCubeMap->RefCount++;
 346          ctx->Texture.Unit[u].CurrentRect->RefCount++;
 347       }
 348       attr = MALLOC_STRUCT( gl_texture_attrib );
 349       MEMCPY( attr, &ctx->Texture, sizeof(struct gl_texture_attrib) );
 350       /* copy state of the currently bound texture objects */
 351       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 352          _mesa_copy_texture_object(&attr->Unit[u].Saved1D,
 353                                    attr->Unit[u].Current1D);
 354          _mesa_copy_texture_object(&attr->Unit[u].Saved2D,
 355                                    attr->Unit[u].Current2D);
 356          _mesa_copy_texture_object(&attr->Unit[u].Saved3D,
 357                                    attr->Unit[u].Current3D);
 358          _mesa_copy_texture_object(&attr->Unit[u].SavedCubeMap,
 359                                    attr->Unit[u].CurrentCubeMap);
 360          _mesa_copy_texture_object(&attr->Unit[u].SavedRect,
 361                                    attr->Unit[u].CurrentRect);
 362       }
 363       newnode = new_attrib_node( GL_TEXTURE_BIT );
 364       newnode->data = attr;
 365       newnode->next = head;
 366       head = newnode;
 367    }
 368
 369    if (mask & GL_TRANSFORM_BIT) {
 370       struct gl_transform_attrib *attr;
 371       attr = MALLOC_STRUCT( gl_transform_attrib );
 372       MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
 373       newnode = new_attrib_node( GL_TRANSFORM_BIT );
 374       newnode->data = attr;
 375       newnode->next = head;
 376       head = newnode;
 377    }
 378
 379    if (mask & GL_VIEWPORT_BIT) {
 380       struct gl_viewport_attrib *attr;
 381       attr = MALLOC_STRUCT( gl_viewport_attrib );
 382       MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
 383       newnode = new_attrib_node( GL_VIEWPORT_BIT );
 384       newnode->data = attr;
 385       newnode->next = head;
 386       head = newnode;
 387    }
 388
 389    /* GL_ARB_multisample */
 390    if (mask & GL_MULTISAMPLE_BIT_ARB) {
 391       struct gl_multisample_attrib *attr;
 392       attr = MALLOC_STRUCT( gl_multisample_attrib );
 393       MEMCPY( attr, &ctx->Multisample, sizeof(struct gl_multisample_attrib) );
 394       newnode = new_attrib_node( GL_MULTISAMPLE_BIT_ARB );
 395       newnode->data = attr;
 396       newnode->next = head;
 397       head = newnode;
 398    }
 399
 400    ctx->AttribStack[ctx->AttribStackDepth] = head;
 401    ctx->AttribStackDepth++;
 402 }
 403
 404
 405
 406 static void
 407 pop_enable_group(GLcontext *ctx, const struct gl_enable_attrib *enable)
 408 {
 409    GLuint i;
 410
 411 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)          \
 412         if ((VALUE) != (NEWVALUE)) {                    \
 413            _mesa_set_enable( ctx, ENUM, (NEWVALUE) );   \
 414         }
 415
 416    TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
 417    TEST_AND_UPDATE(ctx->Color.BlendEnabled, enable->Blend, GL_BLEND);
 418
 419    for (i=0;i<MAX_CLIP_PLANES;i++) {
 420       const GLuint mask = 1 << i;
 421       if ((ctx->Transform.ClipPlanesEnabled & mask) != (enable->ClipPlanes & mask))
 422           _mesa_set_enable(ctx, (GLenum) (GL_CLIP_PLANE0 + i),
 423                            (GLboolean) ((enable->ClipPlanes & mask) ? GL_TRUE : GL_FALSE));
 424    }
 425
 426    TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial,
 427                    GL_COLOR_MATERIAL);
 428    TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled, enable->ColorTable,
 429                    GL_COLOR_TABLE);
 430    TEST_AND_UPDATE(ctx->Pixel.PostColorMatrixColorTableEnabled,
 431                    enable->PostColorMatrixColorTable,
 432                    GL_POST_COLOR_MATRIX_COLOR_TABLE);
 433    TEST_AND_UPDATE(ctx->Pixel.PostConvolutionColorTableEnabled,
 434                    enable->PostConvolutionColorTable,
 435                    GL_POST_CONVOLUTION_COLOR_TABLE);
 436    TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
 437    TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
 438    TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
 439    TEST_AND_UPDATE(ctx->Pixel.Convolution1DEnabled, enable->Convolution1D,
 440                    GL_CONVOLUTION_1D);
 441    TEST_AND_UPDATE(ctx->Pixel.Convolution2DEnabled, enable->Convolution2D,
 442                    GL_CONVOLUTION_2D);
 443    TEST_AND_UPDATE(ctx->Pixel.Separable2DEnabled, enable->Separable2D,
 444                    GL_SEPARABLE_2D);
 445    TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
 446    TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
 447    TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
 448    TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple,
 449                    GL_LINE_STIPPLE);
 450    TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp,
 451                    GL_INDEX_LOGIC_OP);
 452    TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp,
 453                    GL_COLOR_LOGIC_OP);
 454
 455    TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
 456    TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
 457    TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
 458    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1,
 459                    GL_MAP1_TEXTURE_COORD_1);
 460    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2,
 461                    GL_MAP1_TEXTURE_COORD_2);
 462    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3,
 463                    GL_MAP1_TEXTURE_COORD_3);
 464    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4,
 465                    GL_MAP1_TEXTURE_COORD_4);
 466    TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3,
 467                    GL_MAP1_VERTEX_3);
 468    TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4,
 469                    GL_MAP1_VERTEX_4);
 470    for (i = 0; i < 16; i++) {
 471       TEST_AND_UPDATE(ctx->Eval.Map1Attrib[i], enable->Map1Attrib[i],
 472                       GL_MAP1_VERTEX_ATTRIB0_4_NV + i);
 473    }
 474
 475    TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
 476    TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
 477    TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
 478    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1,
 479                    GL_MAP2_TEXTURE_COORD_1);
 480    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2,
 481                    GL_MAP2_TEXTURE_COORD_2);
 482    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3,
 483                    GL_MAP2_TEXTURE_COORD_3);
 484    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4,
 485                    GL_MAP2_TEXTURE_COORD_4);
 486    TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3,
 487                    GL_MAP2_VERTEX_3);
 488    TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4,
 489                    GL_MAP2_VERTEX_4);
 490    for (i = 0; i < 16; i++) {
 491       TEST_AND_UPDATE(ctx->Eval.Map2Attrib[i], enable->Map2Attrib[i],
 492                       GL_MAP2_VERTEX_ATTRIB0_4_NV + i);
 493    }
 494
 495    TEST_AND_UPDATE(ctx->Eval.AutoNormal, enable->AutoNormal, GL_AUTO_NORMAL);
 496    TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
 497    TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals,
 498                    GL_RESCALE_NORMAL_EXT);
 499    TEST_AND_UPDATE(ctx->Transform.RasterPositionUnclipped,
 500                    enable->RasterPositionUnclipped,
 501                    GL_RASTER_POSITION_UNCLIPPED_IBM);
 502    TEST_AND_UPDATE(ctx->Pixel.PixelTextureEnabled, enable->PixelTexture,
 503                    GL_POINT_SMOOTH);
 504    TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth,
 505                    GL_POINT_SMOOTH);
 506    if (ctx->Extensions.NV_point_sprite || ctx->Extensions.ARB_point_sprite) {
 507       TEST_AND_UPDATE(ctx->Point.PointSprite, enable->PointSprite,
 508                       GL_POINT_SPRITE_NV);
 509    }
 510    TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint,
 511                    GL_POLYGON_OFFSET_POINT);
 512    TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine,
 513                    GL_POLYGON_OFFSET_LINE);
 514    TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill,
 515                    GL_POLYGON_OFFSET_FILL);
 516    TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth,
 517                    GL_POLYGON_SMOOTH);
 518    TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple,
 519                    GL_POLYGON_STIPPLE);
 520    TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
 521    TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
 522    if (ctx->Extensions.EXT_stencil_two_side) {
 523       TEST_AND_UPDATE(ctx->Stencil.TestTwoSide, enable->StencilTwoSide, GL_STENCIL_TEST_TWO_SIDE_EXT);
 524    }
 525    TEST_AND_UPDATE(ctx->Multisample.Enabled, enable->MultisampleEnabled,
 526                    GL_MULTISAMPLE_ARB);
 527    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToCoverage,
 528                    enable->SampleAlphaToCoverage,
 529                    GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
 530    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToOne,
 531                    enable->SampleAlphaToOne,
 532                    GL_SAMPLE_ALPHA_TO_ONE_ARB);
 533    TEST_AND_UPDATE(ctx->Multisample.SampleCoverage,
 534                    enable->SampleCoverage,
 535                    GL_SAMPLE_COVERAGE_ARB);
 536    TEST_AND_UPDATE(ctx->Multisample.SampleCoverageInvert,
 537                    enable->SampleCoverageInvert,
 538                    GL_SAMPLE_COVERAGE_INVERT_ARB);
 539    /* GL_NV_vertex_program */
 540    TEST_AND_UPDATE(ctx->VertexProgram.Enabled,
 541                    enable->VertexProgram,
 542                    GL_VERTEX_PROGRAM_NV);
 543    TEST_AND_UPDATE(ctx->VertexProgram.PointSizeEnabled,
 544                    enable->VertexProgramPointSize,
 545                    GL_VERTEX_PROGRAM_POINT_SIZE_NV);
 546    TEST_AND_UPDATE(ctx->VertexProgram.TwoSideEnabled,
 547                    enable->VertexProgramTwoSide,
 548                    GL_VERTEX_PROGRAM_TWO_SIDE_NV);
 549
 550 #undef TEST_AND_UPDATE
 551
 552    /* texture unit enables */
 553    for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
 554       if (ctx->Texture.Unit[i].Enabled != enable->Texture[i]) {
 555          ctx->Texture.Unit[i].Enabled = enable->Texture[i];
 556          if (ctx->Driver.Enable) {
 557             if (ctx->Driver.ActiveTexture) {
 558                (*ctx->Driver.ActiveTexture)(ctx, i);
 559             }
 560             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D,
 561                              (GLboolean) (enable->Texture[i] & TEXTURE_1D_BIT) );
 562             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D,
 563                              (GLboolean) (enable->Texture[i] & TEXTURE_2D_BIT) );
 564             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D,
 565                              (GLboolean) (enable->Texture[i] & TEXTURE_3D_BIT) );
 566             if (ctx->Extensions.ARB_texture_cube_map)
 567                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_CUBE_MAP_ARB,
 568                           (GLboolean) (enable->Texture[i] & TEXTURE_CUBE_BIT) );
 569             if (ctx->Extensions.NV_texture_rectangle)
 570                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_RECTANGLE_NV,
 571                           (GLboolean) (enable->Texture[i] & TEXTURE_RECT_BIT) );
 572          }
 573       }
 574
 575       if (ctx->Texture.Unit[i].TexGenEnabled != enable->TexGen[i]) {
 576          ctx->Texture.Unit[i].TexGenEnabled = enable->TexGen[i];
 577          if (ctx->Driver.Enable) {
 578             if (ctx->Driver.ActiveTexture) {
 579                (*ctx->Driver.ActiveTexture)(ctx, i);
 580             }
 581             if (enable->TexGen[i] & S_BIT)
 582                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_TRUE);
 583             else
 584                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_FALSE);
 585             if (enable->TexGen[i] & T_BIT)
 586                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_TRUE);
 587             else
 588                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_FALSE);
 589             if (enable->TexGen[i] & R_BIT)
 590                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_TRUE);
 591             else
 592                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_FALSE);
 593             if (enable->TexGen[i] & Q_BIT)
 594                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
 595             else
 596                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
 597          }
 598       }
 599
 600       /* GL_SGI_texture_color_table */
 601       ctx->Texture.Unit[i].ColorTableEnabled = enable->TextureColorTable[i];
 602    }
 603
 604    if (ctx->Driver.ActiveTexture) {
 605       (*ctx->Driver.ActiveTexture)(ctx, ctx->Texture.CurrentUnit);
 606    }
 607 }
 608
 609
 610 static void
 611 pop_texture_group(GLcontext *ctx, const struct gl_texture_attrib *texAttrib)
 612 {
 613    GLuint u;
 614
 615    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 616       const struct gl_texture_unit *unit = &texAttrib->Unit[u];
 617       GLuint i;
 618
 619       _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + u);
 620       _mesa_set_enable(ctx, GL_TEXTURE_1D,
 621                        (unit->Enabled & TEXTURE_1D_BIT) ? GL_TRUE : GL_FALSE);
 622       _mesa_set_enable(ctx, GL_TEXTURE_2D,
 623                        (unit->Enabled & TEXTURE_2D_BIT) ? GL_TRUE : GL_FALSE);
 624       _mesa_set_enable(ctx, GL_TEXTURE_3D,
 625                        (unit->Enabled & TEXTURE_3D_BIT) ? GL_TRUE : GL_FALSE);
 626       if (ctx->Extensions.ARB_texture_cube_map) {
 627          _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP_ARB,
 628                      (unit->Enabled & TEXTURE_CUBE_BIT) ? GL_TRUE : GL_FALSE);
 629       }
 630       if (ctx->Extensions.NV_texture_rectangle) {
 631          _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_NV,
 632                      (unit->Enabled & TEXTURE_RECT_BIT) ? GL_TRUE : GL_FALSE);
 633       }
 634       if (ctx->Extensions.SGI_texture_color_table) {
 635          _mesa_set_enable(ctx, GL_TEXTURE_COLOR_TABLE_SGI,
 636                           unit->ColorTableEnabled);
 637       }
 638       _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->EnvMode);
 639       _mesa_TexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, unit->EnvColor);
 640       _mesa_TexGeni(GL_S, GL_TEXTURE_GEN_MODE, unit->GenModeS);
 641       _mesa_TexGeni(GL_T, GL_TEXTURE_GEN_MODE, unit->GenModeT);
 642       _mesa_TexGeni(GL_R, GL_TEXTURE_GEN_MODE, unit->GenModeR);
 643       _mesa_TexGeni(GL_Q, GL_TEXTURE_GEN_MODE, unit->GenModeQ);
 644       _mesa_TexGenfv(GL_S, GL_OBJECT_PLANE, unit->ObjectPlaneS);
 645       _mesa_TexGenfv(GL_T, GL_OBJECT_PLANE, unit->ObjectPlaneT);
 646       _mesa_TexGenfv(GL_R, GL_OBJECT_PLANE, unit->ObjectPlaneR);
 647       _mesa_TexGenfv(GL_Q, GL_OBJECT_PLANE, unit->ObjectPlaneQ);
 648       /* Eye plane done differently to avoid re-transformation */
 649       {
 650          struct gl_texture_unit *destUnit = &ctx->Texture.Unit[u];
 651          COPY_4FV(destUnit->EyePlaneS, unit->EyePlaneS);
 652          COPY_4FV(destUnit->EyePlaneT, unit->EyePlaneT);
 653          COPY_4FV(destUnit->EyePlaneR, unit->EyePlaneR);
 654          COPY_4FV(destUnit->EyePlaneQ, unit->EyePlaneQ);
 655          if (ctx->Driver.TexGen) {
 656             ctx->Driver.TexGen(ctx, GL_S, GL_EYE_PLANE, unit->EyePlaneS);
 657             ctx->Driver.TexGen(ctx, GL_T, GL_EYE_PLANE, unit->EyePlaneT);
 658             ctx->Driver.TexGen(ctx, GL_R, GL_EYE_PLANE, unit->EyePlaneR);
 659             ctx->Driver.TexGen(ctx, GL_Q, GL_EYE_PLANE, unit->EyePlaneQ);
 660          }
 661       }
 662       _mesa_set_enable(ctx, GL_TEXTURE_GEN_S,
 663                        ((unit->TexGenEnabled & S_BIT) ? GL_TRUE : GL_FALSE));
 664       _mesa_set_enable(ctx, GL_TEXTURE_GEN_T,
 665                        ((unit->TexGenEnabled & T_BIT) ? GL_TRUE : GL_FALSE));
 666       _mesa_set_enable(ctx, GL_TEXTURE_GEN_R,
 667                        ((unit->TexGenEnabled & R_BIT) ? GL_TRUE : GL_FALSE));
 668       _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q,
 669                        ((unit->TexGenEnabled & Q_BIT) ? GL_TRUE : GL_FALSE));
 670       if (ctx->Extensions.EXT_texture_lod_bias) {
 671          _mesa_TexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
 672                        GL_TEXTURE_LOD_BIAS_EXT, unit->LodBias);
 673       }
 674       if (ctx->Extensions.EXT_texture_env_combine ||
 675           ctx->Extensions.ARB_texture_env_combine) {
 676          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB,
 677                        unit->Combine.ModeRGB);
 678          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA,
 679                        unit->Combine.ModeA);
 680          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB,
 681                        unit->Combine.SourceRGB[0]);
 682          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB,
 683                        unit->Combine.SourceRGB[1]);
 684          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB,
 685                        unit->Combine.SourceRGB[2]);
 686          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA,
 687                        unit->Combine.SourceA[0]);
 688          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA,
 689                        unit->Combine.SourceA[1]);
 690          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA,
 691                        unit->Combine.SourceA[2]);
 692          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB,
 693                        unit->Combine.OperandRGB[0]);
 694          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB,
 695                        unit->Combine.OperandRGB[1]);
 696          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB,
 697                        unit->Combine.OperandRGB[2]);
 698          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA,
 699                        unit->Combine.OperandA[0]);
 700          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA,
 701                        unit->Combine.OperandA[1]);
 702          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA,
 703                        unit->Combine.OperandA[2]);
 704          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE,
 705                        1 << unit->Combine.ScaleShiftRGB);
 706          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE,
 707                        1 << unit->Combine.ScaleShiftA);
 708       }
 709
 710       /* Restore texture object state */
 711       for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
 712          GLenum target = 0;
 713          const struct gl_texture_object *obj = NULL;
 714          GLfloat bordColor[4];
 715
 716          switch (i) {
 717          case 0:
 718             target = GL_TEXTURE_1D;
 719             obj = &unit->Saved1D;
 720             break;
 721          case 1:
 722             target = GL_TEXTURE_2D;
 723             obj = &unit->Saved2D;
 724             break;
 725          case 2:
 726             target = GL_TEXTURE_3D;
 727             obj = &unit->Saved3D;
 728             break;
 729          case 3:
 730             if (!ctx->Extensions.ARB_texture_cube_map)
 731                continue;
 732             target = GL_TEXTURE_CUBE_MAP_ARB;
 733             obj = &unit->SavedCubeMap;
 734             break;
 735          case 4:
 736             if (!ctx->Extensions.NV_texture_rectangle)
 737                continue;
 738             target = GL_TEXTURE_RECTANGLE_NV;
 739             obj = &unit->SavedRect;
 740             break;
 741          default:
 742             ; /* silence warnings */
 743          }
 744
 745          _mesa_BindTexture(target, obj->Name);
 746
 747          bordColor[0] = CHAN_TO_FLOAT(obj->BorderColor[0]);
 748          bordColor[1] = CHAN_TO_FLOAT(obj->BorderColor[1]);
 749          bordColor[2] = CHAN_TO_FLOAT(obj->BorderColor[2]);
 750          bordColor[3] = CHAN_TO_FLOAT(obj->BorderColor[3]);
 751
 752          _mesa_TexParameterf(target, GL_TEXTURE_PRIORITY, obj->Priority);
 753          _mesa_TexParameterfv(target, GL_TEXTURE_BORDER_COLOR, bordColor);
 754          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, obj->WrapS);
 755          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, obj->WrapT);
 756          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, obj->WrapR);
 757          _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, obj->MinFilter);
 758          _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, obj->MagFilter);
 759          _mesa_TexParameterf(target, GL_TEXTURE_MIN_LOD, obj->MinLod);
 760          _mesa_TexParameterf(target, GL_TEXTURE_MAX_LOD, obj->MaxLod);
 761          _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, obj->BaseLevel);
 762          _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, obj->MaxLevel);
 763          if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 764             _mesa_TexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT,
 765                                 obj->MaxAnisotropy);
 766          }
 767          if (ctx->Extensions.SGIX_shadow) {
 768             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_SGIX,
 769                                 obj->CompareFlag);
 770             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_OPERATOR_SGIX,
 771                                 obj->CompareOperator);
 772          }
 773          if (ctx->Extensions.SGIX_shadow_ambient) {
 774             _mesa_TexParameterf(target, GL_SHADOW_AMBIENT_SGIX,
 775                                 obj->ShadowAmbient);
 776          }
 777
 778       }
 779    }
 780    _mesa_ActiveTextureARB(GL_TEXTURE0_ARB
 781                           + texAttrib->CurrentUnit);
 782
 783    /* "un-bump" the texture object reference counts.  We did that so they
 784     * wouldn't inadvertantly get deleted while they were still referenced
 785     * inside the attribute state stack.
 786     */
 787    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 788       ctx->Texture.Unit[u].Current1D->RefCount--;
 789       ctx->Texture.Unit[u].Current2D->RefCount--;
 790       ctx->Texture.Unit[u].Current3D->RefCount--;
 791       ctx->Texture.Unit[u].CurrentCubeMap->RefCount--;
 792       ctx->Texture.Unit[u].CurrentRect->RefCount--;
 793    }
 794 }
 795
 796
 797 /*
 798  * This function is kind of long just because we have to call a lot
 799  * of device driver functions to update device driver state.
 800  *
 801  * XXX As it is now, most of the pop-code calls immediate-mode Mesa functions
 802  * in order to restore GL state.  This isn't terribly efficient but it
 803  * ensures that dirty flags and any derived state gets updated correctly.
 804  * We could at least check if the value to restore equals the current value
 805  * and then skip the Mesa call.
 806  */
 807 void GLAPIENTRY
 808 _mesa_PopAttrib(void)
 809 {
 810    struct gl_attrib_node *attr, *next;
 811    GET_CURRENT_CONTEXT(ctx);
 812    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 813
 814    if (ctx->AttribStackDepth == 0) {
 815       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
 816       return;
 817    }
 818
 819    ctx->AttribStackDepth--;
 820    attr = ctx->AttribStack[ctx->AttribStackDepth];
 821
 822    while (attr) {
 823
 824       if (MESA_VERBOSE & VERBOSE_API) {
 825          _mesa_debug(ctx, "glPopAttrib %s\n",
 826                      _mesa_lookup_enum_by_nr(attr->kind));
 827       }
 828
 829       switch (attr->kind) {
 830          case GL_ACCUM_BUFFER_BIT:
 831             {
 832                const struct gl_accum_attrib *accum;
 833                accum = (const struct gl_accum_attrib *) attr->data;
 834                _mesa_ClearAccum(accum->ClearColor[0],
 835                                 accum->ClearColor[1],
 836                                 accum->ClearColor[2],
 837                                 accum->ClearColor[3]);
 838             }
 839             break;
 840          case GL_COLOR_BUFFER_BIT:
 841             {
 842                const struct gl_colorbuffer_attrib *color;
 843                color = (const struct gl_colorbuffer_attrib *) attr->data;
 844                _mesa_ClearIndex((GLfloat) color->ClearIndex);
 845                _mesa_ClearColor(color->ClearColor[0],
 846                                 color->ClearColor[1],
 847                                 color->ClearColor[2],
 848                                 color->ClearColor[3]);
 849                _mesa_IndexMask(color->IndexMask);
 850                _mesa_ColorMask((GLboolean) (color->ColorMask[0] != 0),
 851                                (GLboolean) (color->ColorMask[1] != 0),
 852                                (GLboolean) (color->ColorMask[2] != 0),
 853                                (GLboolean) (color->ColorMask[3] != 0));
 854                _mesa_drawbuffers(ctx, ctx->Const.MaxDrawBuffers,
 855                                  color->DrawBuffer, NULL);
 856                _mesa_set_enable(ctx, GL_ALPHA_TEST, color->AlphaEnabled);
 857                _mesa_AlphaFunc(color->AlphaFunc, color->AlphaRef);
 858                _mesa_set_enable(ctx, GL_BLEND, color->BlendEnabled);
 859                _mesa_BlendFuncSeparateEXT(color->BlendSrcRGB,
 860                                           color->BlendDstRGB,
 861                                           color->BlendSrcA,
 862                                           color->BlendDstA);
 863                /* This special case is because glBlendEquationSeparateEXT
 864                 * cannot take GL_LOGIC_OP as a parameter.
 865                 */
 866                if ( color->BlendEquationRGB == color->BlendEquationA ) {
 867                   _mesa_BlendEquation(color->BlendEquationRGB);
 868                }
 869                else {
 870                   _mesa_BlendEquationSeparateEXT(color->BlendEquationRGB,
 871                                                  color->BlendEquationA);
 872                }
 873                _mesa_BlendColor(color->BlendColor[0],
 874                                 color->BlendColor[1],
 875                                 color->BlendColor[2],
 876                                 color->BlendColor[3]);
 877                _mesa_LogicOp(color->LogicOp);
 878                _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP,
 879                                 color->ColorLogicOpEnabled);
 880                _mesa_set_enable(ctx, GL_INDEX_LOGIC_OP,
 881                                 color->IndexLogicOpEnabled);
 882                _mesa_set_enable(ctx, GL_DITHER, color->DitherFlag);
 883             }
 884             break;
 885          case GL_CURRENT_BIT:
 886             FLUSH_CURRENT( ctx, 0 );
 887             MEMCPY( &ctx->Current, attr->data,
 888                     sizeof(struct gl_current_attrib) );
 889             break;
 890          case GL_DEPTH_BUFFER_BIT:
 891             {
 892                const struct gl_depthbuffer_attrib *depth;
 893                depth = (const struct gl_depthbuffer_attrib *) attr->data;
 894                _mesa_DepthFunc(depth->Func);
 895                _mesa_ClearDepth(depth->Clear);
 896                _mesa_set_enable(ctx, GL_DEPTH_TEST, depth->Test);
 897                _mesa_DepthMask(depth->Mask);
 898             }
 899             break;
 900          case GL_ENABLE_BIT:
 901             {
 902                const struct gl_enable_attrib *enable;
 903                enable = (const struct gl_enable_attrib *) attr->data;
 904                pop_enable_group(ctx, enable);
 905                ctx->NewState |= _NEW_ALL;
 906             }
 907             break;
 908          case GL_EVAL_BIT:
 909             MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
 910             ctx->NewState |= _NEW_EVAL;
 911             break;
 912          case GL_FOG_BIT:
 913             {
 914                const struct gl_fog_attrib *fog;
 915                fog = (const struct gl_fog_attrib *) attr->data;
 916                _mesa_set_enable(ctx, GL_FOG, fog->Enabled);
 917                _mesa_Fogfv(GL_FOG_COLOR, fog->Color);
 918                _mesa_Fogf(GL_FOG_DENSITY, fog->Density);
 919                _mesa_Fogf(GL_FOG_START, fog->Start);
 920                _mesa_Fogf(GL_FOG_END, fog->End);
 921                _mesa_Fogf(GL_FOG_INDEX, fog->Index);
 922                _mesa_Fogi(GL_FOG_MODE, fog->Mode);
 923             }
 924             break;
 925          case GL_HINT_BIT:
 926             {
 927                const struct gl_hint_attrib *hint;
 928                hint = (const struct gl_hint_attrib *) attr->data;
 929                _mesa_Hint(GL_PERSPECTIVE_CORRECTION_HINT,
 930                           hint->PerspectiveCorrection );
 931                _mesa_Hint(GL_POINT_SMOOTH_HINT, hint->PointSmooth);
 932                _mesa_Hint(GL_LINE_SMOOTH_HINT, hint->LineSmooth);
 933                _mesa_Hint(GL_POLYGON_SMOOTH_HINT, hint->PolygonSmooth);
 934                _mesa_Hint(GL_FOG_HINT, hint->Fog);
 935                _mesa_Hint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT,
 936                           hint->ClipVolumeClipping);
 937                if (ctx->Extensions.ARB_texture_compression)
 938                   _mesa_Hint(GL_TEXTURE_COMPRESSION_HINT_ARB,
 939                              hint->TextureCompression);
 940             }
 941             break;
 942          case GL_LIGHTING_BIT:
 943             {
 944                GLuint i;
 945                const struct gl_light_attrib *light;
 946                light = (const struct gl_light_attrib *) attr->data;
 947                /* lighting enable */
 948                _mesa_set_enable(ctx, GL_LIGHTING, light->Enabled);
 949                /* per-light state */
 950                if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top))
 951                   _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
 952
 953                for (i = 0; i < MAX_LIGHTS; i++) {
 954                   GLenum lgt = (GLenum) (GL_LIGHT0 + i);
 955                   const struct gl_light *l = &light->Light[i];
 956                   GLfloat tmp[4];
 957                   _mesa_set_enable(ctx, lgt, l->Enabled);
 958                   _mesa_Lightfv( lgt, GL_AMBIENT, l->Ambient );
 959                   _mesa_Lightfv( lgt, GL_DIFFUSE, l->Diffuse );
 960                   _mesa_Lightfv( lgt, GL_SPECULAR, l->Specular );
 961                   TRANSFORM_POINT( tmp, ctx->ModelviewMatrixStack.Top->inv, l->EyePosition );
 962                   _mesa_Lightfv( lgt, GL_POSITION, tmp );
 963                   TRANSFORM_POINT( tmp, ctx->ModelviewMatrixStack.Top->m, l->EyeDirection );
 964                   _mesa_Lightfv( lgt, GL_SPOT_DIRECTION, tmp );
 965                   _mesa_Lightfv( lgt, GL_SPOT_EXPONENT, &l->SpotExponent );
 966                   _mesa_Lightfv( lgt, GL_SPOT_CUTOFF, &l->SpotCutoff );
 967                   _mesa_Lightfv( lgt, GL_CONSTANT_ATTENUATION,
 968                                  &l->ConstantAttenuation );
 969                   _mesa_Lightfv( lgt, GL_LINEAR_ATTENUATION,
 970                                  &l->LinearAttenuation );
 971                   _mesa_Lightfv( lgt, GL_QUADRATIC_ATTENUATION,
 972                                  &l->QuadraticAttenuation );
 973                }
 974                /* light model */
 975                _mesa_LightModelfv(GL_LIGHT_MODEL_AMBIENT,
 976                                   light->Model.Ambient);
 977                _mesa_LightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER,
 978                                  (GLfloat) light->Model.LocalViewer);
 979                _mesa_LightModelf(GL_LIGHT_MODEL_TWO_SIDE,
 980                                  (GLfloat) light->Model.TwoSide);
 981                _mesa_LightModelf(GL_LIGHT_MODEL_COLOR_CONTROL,
 982                                  (GLfloat) light->Model.ColorControl);
 983                /* materials */
 984                MEMCPY(&ctx->Light.Material, &light->Material,
 985                       sizeof(struct gl_material));
 986                /* shade model */
 987                _mesa_ShadeModel(light->ShadeModel);
 988                /* color material */
 989                _mesa_ColorMaterial(light->ColorMaterialFace,
 990                                    light->ColorMaterialMode);
 991                _mesa_set_enable(ctx, GL_COLOR_MATERIAL,
 992                                 light->ColorMaterialEnabled);
 993             }
 994             break;
 995          case GL_LINE_BIT:
 996             {
 997                const struct gl_line_attrib *line;
 998                line = (const struct gl_line_attrib *) attr->data;
 999                _mesa_set_enable(ctx, GL_LINE_SMOOTH, line->SmoothFlag);
1000                _mesa_set_enable(ctx, GL_LINE_STIPPLE, line->StippleFlag);
1001                _mesa_LineStipple(line->StippleFactor, line->StipplePattern);
1002                _mesa_LineWidth(line->Width);
1003             }
1004             break;
1005          case GL_LIST_BIT:
1006             MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
1007             break;
1008          case GL_PIXEL_MODE_BIT:
1009             MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
1010             /* XXX what other pixel state needs to be set by function calls? */
1011             _mesa_ReadBuffer(ctx->Pixel.ReadBuffer);
1012             ctx->NewState |= _NEW_PIXEL;
1013             break;
1014          case GL_POINT_BIT:
1015             {
1016                const struct gl_point_attrib *point;
1017                point = (const struct gl_point_attrib *) attr->data;
1018                _mesa_PointSize(point->Size);
1019                _mesa_set_enable(ctx, GL_POINT_SMOOTH, point->SmoothFlag);
1020                if (ctx->Extensions.EXT_point_parameters) {
1021                   _mesa_PointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT,
1022                                             point->Params);
1023                   _mesa_PointParameterfEXT(GL_POINT_SIZE_MIN_EXT,
1024                                            point->MinSize);
1025                   _mesa_PointParameterfEXT(GL_POINT_SIZE_MAX_EXT,
1026                                            point->MaxSize);
1027                   _mesa_PointParameterfEXT(GL_POINT_FADE_THRESHOLD_SIZE_EXT,
1028                                            point->Threshold);
1029                }
1030                if (ctx->Extensions.NV_point_sprite
1031                    || ctx->Extensions.ARB_point_sprite) {
1032                   GLuint u;
1033                   for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
1034                      _mesa_TexEnvi(GL_POINT_SPRITE_NV, GL_COORD_REPLACE_NV,
1035                                    (GLint) point->CoordReplace[u]);
1036                   }
1037                   _mesa_set_enable(ctx, GL_POINT_SPRITE_NV,point->PointSprite);
1038                   _mesa_PointParameteriNV(GL_POINT_SPRITE_R_MODE_NV,
1039                                           ctx->Point.SpriteRMode);
1040                   _mesa_PointParameterfEXT(GL_POINT_SPRITE_COORD_ORIGIN,
1041                                            (GLfloat)ctx->Point.SpriteOrigin);
1042                }
1043             }
1044             break;
1045          case GL_POLYGON_BIT:
1046             {
1047                const struct gl_polygon_attrib *polygon;
1048                polygon = (const struct gl_polygon_attrib *) attr->data;
1049                _mesa_CullFace(polygon->CullFaceMode);
1050                _mesa_FrontFace(polygon->FrontFace);
1051                _mesa_PolygonMode(GL_FRONT, polygon->FrontMode);
1052                _mesa_PolygonMode(GL_BACK, polygon->BackMode);
1053                _mesa_PolygonOffset(polygon->OffsetFactor,
1054                                    polygon->OffsetUnits);
1055                _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, polygon->SmoothFlag);
1056                _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, polygon->StippleFlag);
1057                _mesa_set_enable(ctx, GL_CULL_FACE, polygon->CullFlag);
1058                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_POINT,
1059                                 polygon->OffsetPoint);
1060                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_LINE,
1061                                 polygon->OffsetLine);
1062                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL,
1063                                 polygon->OffsetFill);
1064             }
1065             break;
1066          case GL_POLYGON_STIPPLE_BIT:
1067             MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
1068             ctx->NewState |= _NEW_POLYGONSTIPPLE;
1069             if (ctx->Driver.PolygonStipple)
1070                ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data );
1071             break;
1072          case GL_SCISSOR_BIT:
1073             {
1074                const struct gl_scissor_attrib *scissor;
1075                scissor = (const struct gl_scissor_attrib *) attr->data;
1076                _mesa_Scissor(scissor->X, scissor->Y,
1077                              scissor->Width, scissor->Height);
1078                _mesa_set_enable(ctx, GL_SCISSOR_TEST, scissor->Enabled);
1079             }
1080             break;
1081          case GL_STENCIL_BUFFER_BIT:
1082             {
1083                const struct gl_stencil_attrib *stencil;
1084                stencil = (const struct gl_stencil_attrib *) attr->data;
1085                _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);
1086                _mesa_ClearStencil(stencil->Clear);
1087                if (ctx->Extensions.EXT_stencil_two_side) {
1088                   _mesa_set_enable(ctx, GL_STENCIL_TEST_TWO_SIDE_EXT,
1089                                    stencil->TestTwoSide);
1090                   _mesa_ActiveStencilFaceEXT(stencil->ActiveFace
1091                                              ? GL_BACK : GL_FRONT);
1092                }
1093                /* front state */
1094                _mesa_StencilFuncSeparate(GL_FRONT,
1095                                          stencil->Function[0],
1096                                          stencil->Ref[0],
1097                                          stencil->ValueMask[0]);
1098                _mesa_StencilMaskSeparate(GL_FRONT, stencil->WriteMask[0]);
1099                _mesa_StencilOpSeparate(GL_FRONT, stencil->FailFunc[0],
1100                                        stencil->ZFailFunc[0],
1101                                        stencil->ZPassFunc[0]);
1102                /* back state */
1103                _mesa_StencilFuncSeparate(GL_BACK,
1104                                          stencil->Function[1],
1105                                          stencil->Ref[1],
1106                                          stencil->ValueMask[1]);
1107                _mesa_StencilMaskSeparate(GL_BACK, stencil->WriteMask[1]);
1108                _mesa_StencilOpSeparate(GL_BACK, stencil->FailFunc[1],
1109                                        stencil->ZFailFunc[1],
1110                                        stencil->ZPassFunc[1]);
1111             }
1112             break;
1113          case GL_TRANSFORM_BIT:
1114             {
1115                GLuint i;
1116                const struct gl_transform_attrib *xform;
1117                xform = (const struct gl_transform_attrib *) attr->data;
1118                _mesa_MatrixMode(xform->MatrixMode);
1119                if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top))
1120                   _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
1121
1122                /* restore clip planes */
1123                for (i = 0; i < MAX_CLIP_PLANES; i++) {
1124                   const GLuint mask = 1 << 1;
1125                   const GLfloat *eyePlane = xform->EyeUserPlane[i];
1126                   COPY_4V(ctx->Transform.EyeUserPlane[i], eyePlane);
1127                   if (xform->ClipPlanesEnabled & mask) {
1128                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE);
1129                   }
1130                   else {
1131                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_FALSE);
1132                   }
1133                   if (ctx->Driver.ClipPlane)
1134                      ctx->Driver.ClipPlane( ctx, GL_CLIP_PLANE0 + i, eyePlane );
1135                }
1136
1137                /* normalize/rescale */
1138                if (xform->Normalize != ctx->Transform.Normalize)
1139                   _mesa_set_enable(ctx, GL_NORMALIZE,ctx->Transform.Normalize);
1140                if (xform->RescaleNormals != ctx->Transform.RescaleNormals)
1141                   _mesa_set_enable(ctx, GL_RESCALE_NORMAL_EXT,
1142                                    ctx->Transform.RescaleNormals);
1143             }
1144             break;
1145          case GL_TEXTURE_BIT:
1146             /* Take care of texture object reference counters */
1147             {
1148                const struct gl_texture_attrib *texture;
1149                texture = (const struct gl_texture_attrib *) attr->data;
1150                pop_texture_group(ctx, texture);
1151                ctx->NewState |= _NEW_TEXTURE;
1152             }
1153             break;
1154          case GL_VIEWPORT_BIT:
1155             {
1156                const struct gl_viewport_attrib *vp;
1157                vp = (const struct gl_viewport_attrib *) attr->data;
1158                _mesa_Viewport(vp->X, vp->Y, vp->Width, vp->Height);
1159                _mesa_DepthRange(vp->Near, vp->Far);
1160             }
1161             break;
1162          case GL_MULTISAMPLE_BIT_ARB:
1163             {
1164                const struct gl_multisample_attrib *ms;
1165                ms = (const struct gl_multisample_attrib *) attr->data;
1166                _mesa_SampleCoverageARB(ms->SampleCoverageValue,
1167                                        ms->SampleCoverageInvert);
1168             }
1169             break;
1170
1171          default:
1172             _mesa_problem( ctx, "Bad attrib flag in PopAttrib");
1173             break;
1174       }
1175
1176       next = attr->next;
1177       FREE( attr->data );
1178       FREE( attr );
1179       attr = next;
1180    }
1181 }
1182
1183
1184 /**
1185  * Helper for incrementing/decrementing vertex buffer object reference
1186  * counts when pushing/popping the GL_CLIENT_VERTEX_ARRAY_BIT attribute group.
1187  */
1188 static void
1189 adjust_buffer_object_ref_counts(struct gl_array_attrib *array, GLint step)
1190 {
1191    GLuint i;
1192    array->Vertex.BufferObj->RefCount += step;
1193    array->Normal.BufferObj->RefCount += step;
1194    array->Color.BufferObj->RefCount += step;
1195    array->SecondaryColor.BufferObj->RefCount += step;
1196    array->FogCoord.BufferObj->RefCount += step;
1197    array->Index.BufferObj->RefCount += step;
1198    array->EdgeFlag.BufferObj->RefCount += step;
1199    for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++)
1200       array->TexCoord[i].BufferObj->RefCount += step;
1201    for (i = 0; i < VERT_ATTRIB_MAX; i++)
1202       array->VertexAttrib[i].BufferObj->RefCount += step;
1203
1204    array->ArrayBufferObj->RefCount += step;
1205    array->ElementArrayBufferObj->RefCount += step;
1206 }
1207
1208
1209 #define GL_CLIENT_PACK_BIT (1<<20)
1210 #define GL_CLIENT_UNPACK_BIT (1<<21)
1211
1212
1213 void GLAPIENTRY
1214 _mesa_PushClientAttrib(GLbitfield mask)
1215 {
1216    struct gl_attrib_node *newnode;
1217    struct gl_attrib_node *head;
1218
1219    GET_CURRENT_CONTEXT(ctx);
1220    ASSERT_OUTSIDE_BEGIN_END(ctx);
1221
1222    if (ctx->ClientAttribStackDepth >= MAX_CLIENT_ATTRIB_STACK_DEPTH) {
1223       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
1224       return;
1225    }
1226
1227    /* Build linked list of attribute nodes which save all attribute */
1228    /* groups specified by the mask. */
1229    head = NULL;
1230
1231    if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
1232       struct gl_pixelstore_attrib *attr;
1233 #if FEATURE_EXT_pixel_buffer_object
1234       ctx->Pack.BufferObj->RefCount++;
1235       ctx->Unpack.BufferObj->RefCount++;
1236 #endif
1237       /* packing attribs */
1238       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1239       MEMCPY( attr, &ctx->Pack, sizeof(struct gl_pixelstore_attrib) );
1240       newnode = new_attrib_node( GL_CLIENT_PACK_BIT );
1241       newnode->data = attr;
1242       newnode->next = head;
1243       head = newnode;
1244       /* unpacking attribs */
1245       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1246       MEMCPY( attr, &ctx->Unpack, sizeof(struct gl_pixelstore_attrib) );
1247       newnode = new_attrib_node( GL_CLIENT_UNPACK_BIT );
1248       newnode->data = attr;
1249       newnode->next = head;
1250       head = newnode;
1251    }
1252    if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
1253       struct gl_array_attrib *attr;
1254       attr = MALLOC_STRUCT( gl_array_attrib );
1255       MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
1256       newnode = new_attrib_node( GL_CLIENT_VERTEX_ARRAY_BIT );
1257       newnode->data = attr;
1258       newnode->next = head;
1259       head = newnode;
1260       /* bump reference counts on buffer objects */
1261       adjust_buffer_object_ref_counts(&ctx->Array, 1);
1262    }
1263
1264    ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
1265    ctx->ClientAttribStackDepth++;
1266 }
1267
1268
1269
1270
1271 void GLAPIENTRY
1272 _mesa_PopClientAttrib(void)
1273 {
1274    struct gl_attrib_node *attr, *next;
1275
1276    GET_CURRENT_CONTEXT(ctx);
1277    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1278
1279    if (ctx->ClientAttribStackDepth == 0) {
1280       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
1281       return;
1282    }
1283
1284    ctx->ClientAttribStackDepth--;
1285    attr = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
1286
1287    while (attr) {
1288       switch (attr->kind) {
1289          case GL_CLIENT_PACK_BIT:
1290 #if FEATURE_EXT_pixel_buffer_object
1291             ctx->Pack.BufferObj->RefCount--;
1292             if (ctx->Pack.BufferObj->RefCount <= 0) {
1293                _mesa_remove_buffer_object( ctx, ctx->Pack.BufferObj );
1294                (*ctx->Driver.DeleteBuffer)( ctx, ctx->Pack.BufferObj );
1295             }
1296 #endif
1297             MEMCPY( &ctx->Pack, attr->data,
1298                     sizeof(struct gl_pixelstore_attrib) );
1299             ctx->NewState |= _NEW_PACKUNPACK;
1300             break;
1301          case GL_CLIENT_UNPACK_BIT:
1302 #if FEATURE_EXT_pixel_buffer_object
1303             ctx->Unpack.BufferObj->RefCount--;
1304             if (ctx->Unpack.BufferObj->RefCount <= 0) {
1305                _mesa_remove_buffer_object( ctx, ctx->Unpack.BufferObj );
1306                (*ctx->Driver.DeleteBuffer)( ctx, ctx->Unpack.BufferObj );
1307             }
1308 #endif
1309             MEMCPY( &ctx->Unpack, attr->data,
1310                     sizeof(struct gl_pixelstore_attrib) );
1311             ctx->NewState |= _NEW_PACKUNPACK;
1312             break;
1313          case GL_CLIENT_VERTEX_ARRAY_BIT:
1314             adjust_buffer_object_ref_counts(&ctx->Array, -1);
1315             MEMCPY( &ctx->Array, attr->data,
1316                     sizeof(struct gl_array_attrib) );
1317             /* decrement reference counts on buffer objects */
1318             ctx->NewState |= _NEW_ARRAY;
1319             break;
1320          default:
1321             _mesa_problem( ctx, "Bad attrib flag in PopClientAttrib");
1322             break;
1323       }
1324
1325       next = attr->next;
1326       FREE( attr->data );
1327       FREE( attr );
1328       attr = next;
1329    }
1330 }
1331
1332
1333 void _mesa_init_attrib( GLcontext *ctx )
1334 {
1335    /* Renderer and client attribute stacks */
1336    ctx->AttribStackDepth = 0;
1337    ctx->ClientAttribStackDepth = 0;
1338 }