src/mesa/main/attrib.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.1
   4  *
   5  * Copyright (C) 1999-2007  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 "arrayobj.h"
  29 #include "attrib.h"
  30 #include "blend.h"
  31 #include "buffers.h"
  32 #include "bufferobj.h"
  33 #include "clear.h"
  34 #include "colormac.h"
  35 #include "colortab.h"
  36 #include "context.h"
  37 #include "depth.h"
  38 #include "enable.h"
  39 #include "enums.h"
  40 #include "fog.h"
  41 #include "hint.h"
  42 #include "light.h"
  43 #include "lines.h"
  44 #include "matrix.h"
  45 #include "multisample.h"
  46 #include "points.h"
  47 #include "polygon.h"
  48 #include "scissor.h"
  49 #include "simple_list.h"
  50 #include "stencil.h"
  51 #include "texenv.h"
  52 #include "texgen.h"
  53 #include "texobj.h"
  54 #include "texparam.h"
  55 #include "texstate.h"
  56 #include "mtypes.h"
  57 #include "math/m_xform.h"
  58
  59
  60 /**
  61  * Allocate a new attribute state node.  These nodes have a
  62  * "kind" value and a pointer to a struct of state data.
  63  */
  64 static struct gl_attrib_node *
  65 new_attrib_node( GLbitfield kind )
  66 {
  67    struct gl_attrib_node *an = MALLOC_STRUCT(gl_attrib_node);
  68    if (an) {
  69       an->kind = kind;
  70    }
  71    return an;
  72 }
  73
  74
  75 void GLAPIENTRY
  76 _mesa_PushAttrib(GLbitfield mask)
  77 {
  78    struct gl_attrib_node *newnode;
  79    struct gl_attrib_node *head;
  80
  81    GET_CURRENT_CONTEXT(ctx);
  82    ASSERT_OUTSIDE_BEGIN_END(ctx);
  83
  84    if (MESA_VERBOSE & VERBOSE_API)
  85       _mesa_debug(ctx, "glPushAttrib %x\n", (int) mask);
  86
  87    if (ctx->AttribStackDepth >= MAX_ATTRIB_STACK_DEPTH) {
  88       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
  89       return;
  90    }
  91
  92    /* Build linked list of attribute nodes which save all attribute */
  93    /* groups specified by the mask. */
  94    head = NULL;
  95
  96    if (mask & GL_ACCUM_BUFFER_BIT) {
  97       struct gl_accum_attrib *attr;
  98       attr = MALLOC_STRUCT( gl_accum_attrib );
  99       MEMCPY( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );
 100       newnode = new_attrib_node( GL_ACCUM_BUFFER_BIT );
 101       newnode->data = attr;
 102       newnode->next = head;
 103       head = newnode;
 104    }
 105
 106    if (mask & GL_COLOR_BUFFER_BIT) {
 107       GLuint i;
 108       struct gl_colorbuffer_attrib *attr;
 109       attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
 110       MEMCPY( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
 111       /* push the Draw FBO's DrawBuffer[] state, not ctx->Color.DrawBuffer[] */
 112       for (i = 0; i < ctx->Const.MaxDrawBuffers; i ++)
 113          attr->DrawBuffer[i] = ctx->DrawBuffer->ColorDrawBuffer[i];
 114       newnode = new_attrib_node( GL_COLOR_BUFFER_BIT );
 115       newnode->data = attr;
 116       newnode->next = head;
 117       head = newnode;
 118    }
 119
 120    if (mask & GL_CURRENT_BIT) {
 121       struct gl_current_attrib *attr;
 122       FLUSH_CURRENT( ctx, 0 );
 123       attr = MALLOC_STRUCT( gl_current_attrib );
 124       MEMCPY( attr, &ctx->Current, sizeof(struct gl_current_attrib) );
 125       newnode = new_attrib_node( GL_CURRENT_BIT );
 126       newnode->data = attr;
 127       newnode->next = head;
 128       head = newnode;
 129    }
 130
 131    if (mask & GL_DEPTH_BUFFER_BIT) {
 132       struct gl_depthbuffer_attrib *attr;
 133       attr = MALLOC_STRUCT( gl_depthbuffer_attrib );
 134       MEMCPY( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );
 135       newnode = new_attrib_node( GL_DEPTH_BUFFER_BIT );
 136       newnode->data = attr;
 137       newnode->next = head;
 138       head = newnode;
 139    }
 140
 141    if (mask & GL_ENABLE_BIT) {
 142       struct gl_enable_attrib *attr;
 143       GLuint i;
 144       attr = MALLOC_STRUCT( gl_enable_attrib );
 145       /* Copy enable flags from all other attributes into the enable struct. */
 146       attr->AlphaTest = ctx->Color.AlphaEnabled;
 147       attr->AutoNormal = ctx->Eval.AutoNormal;
 148       attr->Blend = ctx->Color.BlendEnabled;
 149       attr->ClipPlanes = ctx->Transform.ClipPlanesEnabled;
 150       attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;
 151       for (i = 0; i < COLORTABLE_MAX; i++) {
 152          attr->ColorTable[i] = ctx->Pixel.ColorTableEnabled[i];
 153       }
 154       attr->Convolution1D = ctx->Pixel.Convolution1DEnabled;
 155       attr->Convolution2D = ctx->Pixel.Convolution2DEnabled;
 156       attr->Separable2D = ctx->Pixel.Separable2DEnabled;
 157       attr->CullFace = ctx->Polygon.CullFlag;
 158       attr->DepthTest = ctx->Depth.Test;
 159       attr->Dither = ctx->Color.DitherFlag;
 160       attr->Fog = ctx->Fog.Enabled;
 161       for (i = 0; i < ctx->Const.MaxLights; i++) {
 162          attr->Light[i] = ctx->Light.Light[i].Enabled;
 163       }
 164       attr->Lighting = ctx->Light.Enabled;
 165       attr->LineSmooth = ctx->Line.SmoothFlag;
 166       attr->LineStipple = ctx->Line.StippleFlag;
 167       attr->Histogram = ctx->Pixel.HistogramEnabled;
 168       attr->MinMax = ctx->Pixel.MinMaxEnabled;
 169       attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
 170       attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
 171       attr->Map1Color4 = ctx->Eval.Map1Color4;
 172       attr->Map1Index = ctx->Eval.Map1Index;
 173       attr->Map1Normal = ctx->Eval.Map1Normal;
 174       attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
 175       attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
 176       attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
 177       attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
 178       attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
 179       attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
 180       MEMCPY(attr->Map1Attrib, ctx->Eval.Map1Attrib, sizeof(ctx->Eval.Map1Attrib));
 181       attr->Map2Color4 = ctx->Eval.Map2Color4;
 182       attr->Map2Index = ctx->Eval.Map2Index;
 183       attr->Map2Normal = ctx->Eval.Map2Normal;
 184       attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
 185       attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
 186       attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
 187       attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
 188       attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
 189       attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
 190       MEMCPY(attr->Map2Attrib, ctx->Eval.Map2Attrib, sizeof(ctx->Eval.Map2Attrib));
 191       attr->Normalize = ctx->Transform.Normalize;
 192       attr->RasterPositionUnclipped = ctx->Transform.RasterPositionUnclipped;
 193       attr->PointSmooth = ctx->Point.SmoothFlag;
 194       attr->PointSprite = ctx->Point.PointSprite;
 195       attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;
 196       attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;
 197       attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;
 198       attr->PolygonSmooth = ctx->Polygon.SmoothFlag;
 199       attr->PolygonStipple = ctx->Polygon.StippleFlag;
 200       attr->RescaleNormals = ctx->Transform.RescaleNormals;
 201       attr->Scissor = ctx->Scissor.Enabled;
 202       attr->Stencil = ctx->Stencil.Enabled;
 203       attr->StencilTwoSide = ctx->Stencil.TestTwoSide;
 204       attr->MultisampleEnabled = ctx->Multisample.Enabled;
 205       attr->SampleAlphaToCoverage = ctx->Multisample.SampleAlphaToCoverage;
 206       attr->SampleAlphaToOne = ctx->Multisample.SampleAlphaToOne;
 207       attr->SampleCoverage = ctx->Multisample.SampleCoverage;
 208       attr->SampleCoverageInvert = ctx->Multisample.SampleCoverageInvert;
 209       for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 210          attr->Texture[i] = ctx->Texture.Unit[i].Enabled;
 211          attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
 212          attr->TextureColorTable[i] = ctx->Texture.Unit[i].ColorTableEnabled;
 213       }
 214       /* GL_NV_vertex_program */
 215       attr->VertexProgram = ctx->VertexProgram.Enabled;
 216       attr->VertexProgramPointSize = ctx->VertexProgram.PointSizeEnabled;
 217       attr->VertexProgramTwoSide = ctx->VertexProgram.TwoSideEnabled;
 218       newnode = new_attrib_node( GL_ENABLE_BIT );
 219       newnode->data = attr;
 220       newnode->next = head;
 221       head = newnode;
 222    }
 223
 224    if (mask & GL_EVAL_BIT) {
 225       struct gl_eval_attrib *attr;
 226       attr = MALLOC_STRUCT( gl_eval_attrib );
 227       MEMCPY( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
 228       newnode = new_attrib_node( GL_EVAL_BIT );
 229       newnode->data = attr;
 230       newnode->next = head;
 231       head = newnode;
 232    }
 233
 234    if (mask & GL_FOG_BIT) {
 235       struct gl_fog_attrib *attr;
 236       attr = MALLOC_STRUCT( gl_fog_attrib );
 237       MEMCPY( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
 238       newnode = new_attrib_node( GL_FOG_BIT );
 239       newnode->data = attr;
 240       newnode->next = head;
 241       head = newnode;
 242    }
 243
 244    if (mask & GL_HINT_BIT) {
 245       struct gl_hint_attrib *attr;
 246       attr = MALLOC_STRUCT( gl_hint_attrib );
 247       MEMCPY( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
 248       newnode = new_attrib_node( GL_HINT_BIT );
 249       newnode->data = attr;
 250       newnode->next = head;
 251       head = newnode;
 252    }
 253
 254    if (mask & GL_LIGHTING_BIT) {
 255       struct gl_light_attrib *attr;
 256       FLUSH_CURRENT(ctx, 0);    /* flush material changes */
 257       attr = MALLOC_STRUCT( gl_light_attrib );
 258       MEMCPY( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
 259       newnode = new_attrib_node( GL_LIGHTING_BIT );
 260       newnode->data = attr;
 261       newnode->next = head;
 262       head = newnode;
 263    }
 264
 265    if (mask & GL_LINE_BIT) {
 266       struct gl_line_attrib *attr;
 267       attr = MALLOC_STRUCT( gl_line_attrib );
 268       MEMCPY( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
 269       newnode = new_attrib_node( GL_LINE_BIT );
 270       newnode->data = attr;
 271       newnode->next = head;
 272       head = newnode;
 273    }
 274
 275    if (mask & GL_LIST_BIT) {
 276       struct gl_list_attrib *attr;
 277       attr = MALLOC_STRUCT( gl_list_attrib );
 278       MEMCPY( attr, &ctx->List, sizeof(struct gl_list_attrib) );
 279       newnode = new_attrib_node( GL_LIST_BIT );
 280       newnode->data = attr;
 281       newnode->next = head;
 282       head = newnode;
 283    }
 284
 285    if (mask & GL_PIXEL_MODE_BIT) {
 286       struct gl_pixel_attrib *attr;
 287       attr = MALLOC_STRUCT( gl_pixel_attrib );
 288       MEMCPY( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
 289       /* push the Read FBO's ReadBuffer state, not ctx->Pixel.ReadBuffer */
 290       attr->ReadBuffer = ctx->ReadBuffer->ColorReadBuffer;
 291       newnode = new_attrib_node( GL_PIXEL_MODE_BIT );
 292       newnode->data = attr;
 293       newnode->next = head;
 294       head = newnode;
 295    }
 296
 297    if (mask & GL_POINT_BIT) {
 298       struct gl_point_attrib *attr;
 299       attr = MALLOC_STRUCT( gl_point_attrib );
 300       MEMCPY( attr, &ctx->Point, sizeof(struct gl_point_attrib) );
 301       newnode = new_attrib_node( GL_POINT_BIT );
 302       newnode->data = attr;
 303       newnode->next = head;
 304       head = newnode;
 305    }
 306
 307    if (mask & GL_POLYGON_BIT) {
 308       struct gl_polygon_attrib *attr;
 309       attr = MALLOC_STRUCT( gl_polygon_attrib );
 310       MEMCPY( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );
 311       newnode = new_attrib_node( GL_POLYGON_BIT );
 312       newnode->data = attr;
 313       newnode->next = head;
 314       head = newnode;
 315    }
 316
 317    if (mask & GL_POLYGON_STIPPLE_BIT) {
 318       GLuint *stipple;
 319       stipple = (GLuint *) MALLOC( 32*sizeof(GLuint) );
 320       MEMCPY( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );
 321       newnode = new_attrib_node( GL_POLYGON_STIPPLE_BIT );
 322       newnode->data = stipple;
 323       newnode->next = head;
 324       head = newnode;
 325    }
 326
 327    if (mask & GL_SCISSOR_BIT) {
 328       struct gl_scissor_attrib *attr;
 329       attr = MALLOC_STRUCT( gl_scissor_attrib );
 330       MEMCPY( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );
 331       newnode = new_attrib_node( GL_SCISSOR_BIT );
 332       newnode->data = attr;
 333       newnode->next = head;
 334       head = newnode;
 335    }
 336
 337    if (mask & GL_STENCIL_BUFFER_BIT) {
 338       struct gl_stencil_attrib *attr;
 339       attr = MALLOC_STRUCT( gl_stencil_attrib );
 340       MEMCPY( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );
 341       newnode = new_attrib_node( GL_STENCIL_BUFFER_BIT );
 342       newnode->data = attr;
 343       newnode->next = head;
 344       head = newnode;
 345    }
 346
 347    if (mask & GL_TEXTURE_BIT) {
 348       struct gl_texture_attrib *attr;
 349       GLuint u;
 350
 351       _mesa_lock_context_textures(ctx);
 352       /* Bump the texture object reference counts so that they don't
 353        * inadvertantly get deleted.
 354        */
 355       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 356          ctx->Texture.Unit[u].Current1D->RefCount++;
 357          ctx->Texture.Unit[u].Current2D->RefCount++;
 358          ctx->Texture.Unit[u].Current3D->RefCount++;
 359          ctx->Texture.Unit[u].CurrentCubeMap->RefCount++;
 360          ctx->Texture.Unit[u].CurrentRect->RefCount++;
 361          ctx->Texture.Unit[u].Current1DArray->RefCount++;
 362          ctx->Texture.Unit[u].Current2DArray->RefCount++;
 363       }
 364       attr = MALLOC_STRUCT( gl_texture_attrib );
 365       MEMCPY( attr, &ctx->Texture, sizeof(struct gl_texture_attrib) );
 366       /* copy state of the currently bound texture objects */
 367       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 368          _mesa_copy_texture_object(&attr->Unit[u].Saved1D,
 369                                    attr->Unit[u].Current1D);
 370          _mesa_copy_texture_object(&attr->Unit[u].Saved2D,
 371                                    attr->Unit[u].Current2D);
 372          _mesa_copy_texture_object(&attr->Unit[u].Saved3D,
 373                                    attr->Unit[u].Current3D);
 374          _mesa_copy_texture_object(&attr->Unit[u].SavedCubeMap,
 375                                    attr->Unit[u].CurrentCubeMap);
 376          _mesa_copy_texture_object(&attr->Unit[u].SavedRect,
 377                                    attr->Unit[u].CurrentRect);
 378          _mesa_copy_texture_object(&attr->Unit[u].Saved1DArray,
 379                                    attr->Unit[u].Current1DArray);
 380          _mesa_copy_texture_object(&attr->Unit[u].Saved2DArray,
 381                                    attr->Unit[u].Current2DArray);
 382       }
 383
 384       _mesa_unlock_context_textures(ctx);
 385
 386       newnode = new_attrib_node( GL_TEXTURE_BIT );
 387       newnode->data = attr;
 388       newnode->next = head;
 389       head = newnode;
 390    }
 391
 392    if (mask & GL_TRANSFORM_BIT) {
 393       struct gl_transform_attrib *attr;
 394       attr = MALLOC_STRUCT( gl_transform_attrib );
 395       MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
 396       newnode = new_attrib_node( GL_TRANSFORM_BIT );
 397       newnode->data = attr;
 398       newnode->next = head;
 399       head = newnode;
 400    }
 401
 402    if (mask & GL_VIEWPORT_BIT) {
 403       struct gl_viewport_attrib *attr;
 404       attr = MALLOC_STRUCT( gl_viewport_attrib );
 405       MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
 406       newnode = new_attrib_node( GL_VIEWPORT_BIT );
 407       newnode->data = attr;
 408       newnode->next = head;
 409       head = newnode;
 410    }
 411
 412    /* GL_ARB_multisample */
 413    if (mask & GL_MULTISAMPLE_BIT_ARB) {
 414       struct gl_multisample_attrib *attr;
 415       attr = MALLOC_STRUCT( gl_multisample_attrib );
 416       MEMCPY( attr, &ctx->Multisample, sizeof(struct gl_multisample_attrib) );
 417       newnode = new_attrib_node( GL_MULTISAMPLE_BIT_ARB );
 418       newnode->data = attr;
 419       newnode->next = head;
 420       head = newnode;
 421    }
 422
 423    ctx->AttribStack[ctx->AttribStackDepth] = head;
 424    ctx->AttribStackDepth++;
 425 }
 426
 427
 428
 429 static void
 430 pop_enable_group(GLcontext *ctx, const struct gl_enable_attrib *enable)
 431 {
 432    GLuint i;
 433
 434 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)          \
 435         if ((VALUE) != (NEWVALUE)) {                    \
 436            _mesa_set_enable( ctx, ENUM, (NEWVALUE) );   \
 437         }
 438
 439    TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
 440    TEST_AND_UPDATE(ctx->Color.BlendEnabled, enable->Blend, GL_BLEND);
 441
 442    for (i=0;i<MAX_CLIP_PLANES;i++) {
 443       const GLuint mask = 1 << i;
 444       if ((ctx->Transform.ClipPlanesEnabled & mask) != (enable->ClipPlanes & mask))
 445           _mesa_set_enable(ctx, (GLenum) (GL_CLIP_PLANE0 + i),
 446                            (GLboolean) ((enable->ClipPlanes & mask) ? GL_TRUE : GL_FALSE));
 447    }
 448
 449    TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial,
 450                    GL_COLOR_MATERIAL);
 451    TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled[COLORTABLE_PRECONVOLUTION],
 452                    enable->ColorTable[COLORTABLE_PRECONVOLUTION],
 453                    GL_COLOR_TABLE);
 454    TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled[COLORTABLE_POSTCONVOLUTION],
 455                    enable->ColorTable[COLORTABLE_POSTCONVOLUTION],
 456                    GL_POST_CONVOLUTION_COLOR_TABLE);
 457    TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled[COLORTABLE_POSTCOLORMATRIX],
 458                    enable->ColorTable[COLORTABLE_POSTCOLORMATRIX],
 459                    GL_POST_COLOR_MATRIX_COLOR_TABLE);
 460    TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
 461    TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
 462    TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
 463    TEST_AND_UPDATE(ctx->Pixel.Convolution1DEnabled, enable->Convolution1D,
 464                    GL_CONVOLUTION_1D);
 465    TEST_AND_UPDATE(ctx->Pixel.Convolution2DEnabled, enable->Convolution2D,
 466                    GL_CONVOLUTION_2D);
 467    TEST_AND_UPDATE(ctx->Pixel.Separable2DEnabled, enable->Separable2D,
 468                    GL_SEPARABLE_2D);
 469    TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
 470    TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
 471    TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
 472    TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple,
 473                    GL_LINE_STIPPLE);
 474    TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp,
 475                    GL_INDEX_LOGIC_OP);
 476    TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp,
 477                    GL_COLOR_LOGIC_OP);
 478
 479    TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
 480    TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
 481    TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
 482    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1,
 483                    GL_MAP1_TEXTURE_COORD_1);
 484    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2,
 485                    GL_MAP1_TEXTURE_COORD_2);
 486    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3,
 487                    GL_MAP1_TEXTURE_COORD_3);
 488    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4,
 489                    GL_MAP1_TEXTURE_COORD_4);
 490    TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3,
 491                    GL_MAP1_VERTEX_3);
 492    TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4,
 493                    GL_MAP1_VERTEX_4);
 494    for (i = 0; i < 16; i++) {
 495       TEST_AND_UPDATE(ctx->Eval.Map1Attrib[i], enable->Map1Attrib[i],
 496                       GL_MAP1_VERTEX_ATTRIB0_4_NV + i);
 497    }
 498
 499    TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
 500    TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
 501    TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
 502    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1,
 503                    GL_MAP2_TEXTURE_COORD_1);
 504    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2,
 505                    GL_MAP2_TEXTURE_COORD_2);
 506    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3,
 507                    GL_MAP2_TEXTURE_COORD_3);
 508    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4,
 509                    GL_MAP2_TEXTURE_COORD_4);
 510    TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3,
 511                    GL_MAP2_VERTEX_3);
 512    TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4,
 513                    GL_MAP2_VERTEX_4);
 514    for (i = 0; i < 16; i++) {
 515       TEST_AND_UPDATE(ctx->Eval.Map2Attrib[i], enable->Map2Attrib[i],
 516                       GL_MAP2_VERTEX_ATTRIB0_4_NV + i);
 517    }
 518
 519    TEST_AND_UPDATE(ctx->Eval.AutoNormal, enable->AutoNormal, GL_AUTO_NORMAL);
 520    TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
 521    TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals,
 522                    GL_RESCALE_NORMAL_EXT);
 523    TEST_AND_UPDATE(ctx->Transform.RasterPositionUnclipped,
 524                    enable->RasterPositionUnclipped,
 525                    GL_RASTER_POSITION_UNCLIPPED_IBM);
 526    TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth,
 527                    GL_POINT_SMOOTH);
 528    if (ctx->Extensions.NV_point_sprite || ctx->Extensions.ARB_point_sprite) {
 529       TEST_AND_UPDATE(ctx->Point.PointSprite, enable->PointSprite,
 530                       GL_POINT_SPRITE_NV);
 531    }
 532    TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint,
 533                    GL_POLYGON_OFFSET_POINT);
 534    TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine,
 535                    GL_POLYGON_OFFSET_LINE);
 536    TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill,
 537                    GL_POLYGON_OFFSET_FILL);
 538    TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth,
 539                    GL_POLYGON_SMOOTH);
 540    TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple,
 541                    GL_POLYGON_STIPPLE);
 542    TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
 543    TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
 544    if (ctx->Extensions.EXT_stencil_two_side) {
 545       TEST_AND_UPDATE(ctx->Stencil.TestTwoSide, enable->StencilTwoSide, GL_STENCIL_TEST_TWO_SIDE_EXT);
 546    }
 547    TEST_AND_UPDATE(ctx->Multisample.Enabled, enable->MultisampleEnabled,
 548                    GL_MULTISAMPLE_ARB);
 549    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToCoverage,
 550                    enable->SampleAlphaToCoverage,
 551                    GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
 552    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToOne,
 553                    enable->SampleAlphaToOne,
 554                    GL_SAMPLE_ALPHA_TO_ONE_ARB);
 555    TEST_AND_UPDATE(ctx->Multisample.SampleCoverage,
 556                    enable->SampleCoverage,
 557                    GL_SAMPLE_COVERAGE_ARB);
 558    TEST_AND_UPDATE(ctx->Multisample.SampleCoverageInvert,
 559                    enable->SampleCoverageInvert,
 560                    GL_SAMPLE_COVERAGE_INVERT_ARB);
 561    /* GL_ARB_vertex_program, GL_NV_vertex_program */
 562    TEST_AND_UPDATE(ctx->VertexProgram.Enabled,
 563                    enable->VertexProgram,
 564                    GL_VERTEX_PROGRAM_ARB);
 565    TEST_AND_UPDATE(ctx->VertexProgram.PointSizeEnabled,
 566                    enable->VertexProgramPointSize,
 567                    GL_VERTEX_PROGRAM_POINT_SIZE_ARB);
 568    TEST_AND_UPDATE(ctx->VertexProgram.TwoSideEnabled,
 569                    enable->VertexProgramTwoSide,
 570                    GL_VERTEX_PROGRAM_TWO_SIDE_ARB);
 571
 572 #undef TEST_AND_UPDATE
 573
 574    /* texture unit enables */
 575    for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
 576       if (ctx->Texture.Unit[i].Enabled != enable->Texture[i]) {
 577          ctx->Texture.Unit[i].Enabled = enable->Texture[i];
 578          if (ctx->Driver.Enable) {
 579             if (ctx->Driver.ActiveTexture) {
 580                (*ctx->Driver.ActiveTexture)(ctx, i);
 581             }
 582             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D,
 583                              (GLboolean) (enable->Texture[i] & TEXTURE_1D_BIT) );
 584             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D,
 585                              (GLboolean) (enable->Texture[i] & TEXTURE_2D_BIT) );
 586             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D,
 587                              (GLboolean) (enable->Texture[i] & TEXTURE_3D_BIT) );
 588             if (ctx->Extensions.ARB_texture_cube_map)
 589                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_CUBE_MAP_ARB,
 590                           (GLboolean) (enable->Texture[i] & TEXTURE_CUBE_BIT) );
 591             if (ctx->Extensions.NV_texture_rectangle)
 592                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_RECTANGLE_NV,
 593                           (GLboolean) (enable->Texture[i] & TEXTURE_RECT_BIT) );
 594          }
 595       }
 596
 597       if (ctx->Texture.Unit[i].TexGenEnabled != enable->TexGen[i]) {
 598          ctx->Texture.Unit[i].TexGenEnabled = enable->TexGen[i];
 599          if (ctx->Driver.Enable) {
 600             if (ctx->Driver.ActiveTexture) {
 601                (*ctx->Driver.ActiveTexture)(ctx, i);
 602             }
 603             if (enable->TexGen[i] & S_BIT)
 604                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_TRUE);
 605             else
 606                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_FALSE);
 607             if (enable->TexGen[i] & T_BIT)
 608                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_TRUE);
 609             else
 610                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_FALSE);
 611             if (enable->TexGen[i] & R_BIT)
 612                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_TRUE);
 613             else
 614                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_FALSE);
 615             if (enable->TexGen[i] & Q_BIT)
 616                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
 617             else
 618                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
 619          }
 620       }
 621
 622       /* GL_SGI_texture_color_table */
 623       ctx->Texture.Unit[i].ColorTableEnabled = enable->TextureColorTable[i];
 624    }
 625
 626    if (ctx->Driver.ActiveTexture) {
 627       (*ctx->Driver.ActiveTexture)(ctx, ctx->Texture.CurrentUnit);
 628    }
 629 }
 630
 631
 632 static void
 633 pop_texture_group(GLcontext *ctx, const struct gl_texture_attrib *texAttrib)
 634 {
 635    GLuint u;
 636
 637    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 638       const struct gl_texture_unit *unit = &texAttrib->Unit[u];
 639       GLuint i;
 640
 641       _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + u);
 642       _mesa_set_enable(ctx, GL_TEXTURE_1D,
 643                        (unit->Enabled & TEXTURE_1D_BIT) ? GL_TRUE : GL_FALSE);
 644       _mesa_set_enable(ctx, GL_TEXTURE_2D,
 645                        (unit->Enabled & TEXTURE_2D_BIT) ? GL_TRUE : GL_FALSE);
 646       _mesa_set_enable(ctx, GL_TEXTURE_3D,
 647                        (unit->Enabled & TEXTURE_3D_BIT) ? GL_TRUE : GL_FALSE);
 648       if (ctx->Extensions.ARB_texture_cube_map) {
 649          _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP_ARB,
 650                      (unit->Enabled & TEXTURE_CUBE_BIT) ? GL_TRUE : GL_FALSE);
 651       }
 652       if (ctx->Extensions.NV_texture_rectangle) {
 653          _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_NV,
 654                      (unit->Enabled & TEXTURE_RECT_BIT) ? GL_TRUE : GL_FALSE);
 655       }
 656       if (ctx->Extensions.SGI_texture_color_table) {
 657          _mesa_set_enable(ctx, GL_TEXTURE_COLOR_TABLE_SGI,
 658                           unit->ColorTableEnabled);
 659       }
 660       _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->EnvMode);
 661       _mesa_TexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, unit->EnvColor);
 662       _mesa_TexGeni(GL_S, GL_TEXTURE_GEN_MODE, unit->GenModeS);
 663       _mesa_TexGeni(GL_T, GL_TEXTURE_GEN_MODE, unit->GenModeT);
 664       _mesa_TexGeni(GL_R, GL_TEXTURE_GEN_MODE, unit->GenModeR);
 665       _mesa_TexGeni(GL_Q, GL_TEXTURE_GEN_MODE, unit->GenModeQ);
 666       _mesa_TexGenfv(GL_S, GL_OBJECT_PLANE, unit->ObjectPlaneS);
 667       _mesa_TexGenfv(GL_T, GL_OBJECT_PLANE, unit->ObjectPlaneT);
 668       _mesa_TexGenfv(GL_R, GL_OBJECT_PLANE, unit->ObjectPlaneR);
 669       _mesa_TexGenfv(GL_Q, GL_OBJECT_PLANE, unit->ObjectPlaneQ);
 670       /* Eye plane done differently to avoid re-transformation */
 671       {
 672          struct gl_texture_unit *destUnit = &ctx->Texture.Unit[u];
 673          COPY_4FV(destUnit->EyePlaneS, unit->EyePlaneS);
 674          COPY_4FV(destUnit->EyePlaneT, unit->EyePlaneT);
 675          COPY_4FV(destUnit->EyePlaneR, unit->EyePlaneR);
 676          COPY_4FV(destUnit->EyePlaneQ, unit->EyePlaneQ);
 677          if (ctx->Driver.TexGen) {
 678             ctx->Driver.TexGen(ctx, GL_S, GL_EYE_PLANE, unit->EyePlaneS);
 679             ctx->Driver.TexGen(ctx, GL_T, GL_EYE_PLANE, unit->EyePlaneT);
 680             ctx->Driver.TexGen(ctx, GL_R, GL_EYE_PLANE, unit->EyePlaneR);
 681             ctx->Driver.TexGen(ctx, GL_Q, GL_EYE_PLANE, unit->EyePlaneQ);
 682          }
 683       }
 684       _mesa_set_enable(ctx, GL_TEXTURE_GEN_S,
 685                        ((unit->TexGenEnabled & S_BIT) ? GL_TRUE : GL_FALSE));
 686       _mesa_set_enable(ctx, GL_TEXTURE_GEN_T,
 687                        ((unit->TexGenEnabled & T_BIT) ? GL_TRUE : GL_FALSE));
 688       _mesa_set_enable(ctx, GL_TEXTURE_GEN_R,
 689                        ((unit->TexGenEnabled & R_BIT) ? GL_TRUE : GL_FALSE));
 690       _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q,
 691                        ((unit->TexGenEnabled & Q_BIT) ? GL_TRUE : GL_FALSE));
 692       if (ctx->Extensions.EXT_texture_lod_bias) {
 693          _mesa_TexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
 694                        GL_TEXTURE_LOD_BIAS_EXT, unit->LodBias);
 695       }
 696       if (ctx->Extensions.EXT_texture_env_combine ||
 697           ctx->Extensions.ARB_texture_env_combine) {
 698          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB,
 699                        unit->Combine.ModeRGB);
 700          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA,
 701                        unit->Combine.ModeA);
 702          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB,
 703                        unit->Combine.SourceRGB[0]);
 704          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB,
 705                        unit->Combine.SourceRGB[1]);
 706          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB,
 707                        unit->Combine.SourceRGB[2]);
 708          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA,
 709                        unit->Combine.SourceA[0]);
 710          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA,
 711                        unit->Combine.SourceA[1]);
 712          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA,
 713                        unit->Combine.SourceA[2]);
 714          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB,
 715                        unit->Combine.OperandRGB[0]);
 716          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB,
 717                        unit->Combine.OperandRGB[1]);
 718          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB,
 719                        unit->Combine.OperandRGB[2]);
 720          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA,
 721                        unit->Combine.OperandA[0]);
 722          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA,
 723                        unit->Combine.OperandA[1]);
 724          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA,
 725                        unit->Combine.OperandA[2]);
 726          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE,
 727                        1 << unit->Combine.ScaleShiftRGB);
 728          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE,
 729                        1 << unit->Combine.ScaleShiftA);
 730       }
 731
 732       /* Restore texture object state */
 733       for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
 734          GLenum target = 0;
 735          const struct gl_texture_object *obj = NULL;
 736          GLfloat bordColor[4];
 737
 738          switch (i) {
 739          case 0:
 740             target = GL_TEXTURE_1D;
 741             obj = &unit->Saved1D;
 742             break;
 743          case 1:
 744             target = GL_TEXTURE_2D;
 745             obj = &unit->Saved2D;
 746             break;
 747          case 2:
 748             target = GL_TEXTURE_3D;
 749             obj = &unit->Saved3D;
 750             break;
 751          case 3:
 752             if (!ctx->Extensions.ARB_texture_cube_map)
 753                continue;
 754             target = GL_TEXTURE_CUBE_MAP_ARB;
 755             obj = &unit->SavedCubeMap;
 756             break;
 757          case 4:
 758             if (!ctx->Extensions.NV_texture_rectangle)
 759                continue;
 760             target = GL_TEXTURE_RECTANGLE_NV;
 761             obj = &unit->SavedRect;
 762             break;
 763          case 5:
 764             if (!ctx->Extensions.MESA_texture_array)
 765                continue;
 766             target = GL_TEXTURE_1D_ARRAY_EXT;
 767             obj = &unit->Saved1DArray;
 768             break;
 769          case 6:
 770             if (!ctx->Extensions.MESA_texture_array)
 771                continue;
 772             target = GL_TEXTURE_2D_ARRAY_EXT;
 773             obj = &unit->Saved2DArray;
 774             break;
 775          default:
 776             ; /* silence warnings */
 777          }
 778
 779          _mesa_BindTexture(target, obj->Name);
 780
 781          bordColor[0] = CHAN_TO_FLOAT(obj->BorderColor[0]);
 782          bordColor[1] = CHAN_TO_FLOAT(obj->BorderColor[1]);
 783          bordColor[2] = CHAN_TO_FLOAT(obj->BorderColor[2]);
 784          bordColor[3] = CHAN_TO_FLOAT(obj->BorderColor[3]);
 785
 786          _mesa_TexParameterf(target, GL_TEXTURE_PRIORITY, obj->Priority);
 787          _mesa_TexParameterfv(target, GL_TEXTURE_BORDER_COLOR, bordColor);
 788          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, obj->WrapS);
 789          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, obj->WrapT);
 790          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, obj->WrapR);
 791          _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, obj->MinFilter);
 792          _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, obj->MagFilter);
 793          _mesa_TexParameterf(target, GL_TEXTURE_MIN_LOD, obj->MinLod);
 794          _mesa_TexParameterf(target, GL_TEXTURE_MAX_LOD, obj->MaxLod);
 795          _mesa_TexParameterf(target, GL_TEXTURE_LOD_BIAS, obj->LodBias);
 796          _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, obj->BaseLevel);
 797          if (target != GL_TEXTURE_RECTANGLE_ARB)
 798             _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, obj->MaxLevel);
 799          if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 800             _mesa_TexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT,
 801                                 obj->MaxAnisotropy);
 802          }
 803          if (ctx->Extensions.SGIX_shadow) {
 804             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_SGIX,
 805                                 obj->CompareFlag);
 806             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_OPERATOR_SGIX,
 807                                 obj->CompareOperator);
 808          }
 809          if (ctx->Extensions.SGIX_shadow_ambient) {
 810             _mesa_TexParameterf(target, GL_SHADOW_AMBIENT_SGIX,
 811                                 obj->ShadowAmbient);
 812          }
 813
 814       }
 815    }
 816    _mesa_ActiveTextureARB(GL_TEXTURE0_ARB
 817                           + texAttrib->CurrentUnit);
 818
 819    /* "un-bump" the texture object reference counts.  We did that so they
 820     * wouldn't inadvertantly get deleted while they were still referenced
 821     * inside the attribute state stack.
 822     */
 823    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 824       ctx->Texture.Unit[u].Current1D->RefCount--;
 825       ctx->Texture.Unit[u].Current2D->RefCount--;
 826       ctx->Texture.Unit[u].Current3D->RefCount--;
 827       ctx->Texture.Unit[u].CurrentCubeMap->RefCount--;
 828       ctx->Texture.Unit[u].CurrentRect->RefCount--;
 829       ctx->Texture.Unit[u].Current1DArray->RefCount--;
 830       ctx->Texture.Unit[u].Current2DArray->RefCount--;
 831    }
 832 }
 833
 834
 835 /*
 836  * This function is kind of long just because we have to call a lot
 837  * of device driver functions to update device driver state.
 838  *
 839  * XXX As it is now, most of the pop-code calls immediate-mode Mesa functions
 840  * in order to restore GL state.  This isn't terribly efficient but it
 841  * ensures that dirty flags and any derived state gets updated correctly.
 842  * We could at least check if the value to restore equals the current value
 843  * and then skip the Mesa call.
 844  */
 845 void GLAPIENTRY
 846 _mesa_PopAttrib(void)
 847 {
 848    struct gl_attrib_node *attr, *next;
 849    GET_CURRENT_CONTEXT(ctx);
 850    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 851
 852    if (ctx->AttribStackDepth == 0) {
 853       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
 854       return;
 855    }
 856
 857    ctx->AttribStackDepth--;
 858    attr = ctx->AttribStack[ctx->AttribStackDepth];
 859
 860    while (attr) {
 861
 862       if (MESA_VERBOSE & VERBOSE_API) {
 863          _mesa_debug(ctx, "glPopAttrib %s\n",
 864                      _mesa_lookup_enum_by_nr(attr->kind));
 865       }
 866
 867       switch (attr->kind) {
 868          case GL_ACCUM_BUFFER_BIT:
 869             {
 870                const struct gl_accum_attrib *accum;
 871                accum = (const struct gl_accum_attrib *) attr->data;
 872                _mesa_ClearAccum(accum->ClearColor[0],
 873                                 accum->ClearColor[1],
 874                                 accum->ClearColor[2],
 875                                 accum->ClearColor[3]);
 876             }
 877             break;
 878          case GL_COLOR_BUFFER_BIT:
 879             {
 880                const struct gl_colorbuffer_attrib *color;
 881                color = (const struct gl_colorbuffer_attrib *) attr->data;
 882                _mesa_ClearIndex((GLfloat) color->ClearIndex);
 883                _mesa_ClearColor(color->ClearColor[0],
 884                                 color->ClearColor[1],
 885                                 color->ClearColor[2],
 886                                 color->ClearColor[3]);
 887                _mesa_IndexMask(color->IndexMask);
 888                _mesa_ColorMask((GLboolean) (color->ColorMask[0] != 0),
 889                                (GLboolean) (color->ColorMask[1] != 0),
 890                                (GLboolean) (color->ColorMask[2] != 0),
 891                                (GLboolean) (color->ColorMask[3] != 0));
 892                {
 893                   /* Need to determine if more than one color output is
 894                    * specified.  If so, call glDrawBuffersARB, else call
 895                    * glDrawBuffer().  This is a subtle, but essential point
 896                    * since GL_FRONT (for example) is illegal for the former
 897                    * function, but legal for the later.
 898                    */
 899                   GLboolean multipleBuffers = GL_FALSE;
 900                   if (ctx->Extensions.ARB_draw_buffers) {
 901                      GLuint i;
 902                      for (i = 1; i < ctx->Const.MaxDrawBuffers; i++) {
 903                         if (color->DrawBuffer[i] != GL_NONE) {
 904                            multipleBuffers = GL_TRUE;
 905                            break;
 906                         }
 907                      }
 908                   }
 909                   /* Call the API_level functions, not _mesa_drawbuffers()
 910                    * since we need to do error checking on the pop'd
 911                    * GL_DRAW_BUFFER.
 912                    * Ex: if GL_FRONT were pushed, but we're popping with a
 913                    * user FBO bound, GL_FRONT will be illegal and we'll need
 914                    * to record that error.  Per OpenGL ARB decision.
 915                    */
 916                   if (multipleBuffers)
 917                      _mesa_DrawBuffersARB(ctx->Const.MaxDrawBuffers,
 918                                           color->DrawBuffer);
 919                   else
 920                      _mesa_DrawBuffer(color->DrawBuffer[0]);
 921                }
 922                _mesa_set_enable(ctx, GL_ALPHA_TEST, color->AlphaEnabled);
 923                _mesa_AlphaFunc(color->AlphaFunc, color->AlphaRef);
 924                _mesa_set_enable(ctx, GL_BLEND, color->BlendEnabled);
 925                _mesa_BlendFuncSeparateEXT(color->BlendSrcRGB,
 926                                           color->BlendDstRGB,
 927                                           color->BlendSrcA,
 928                                           color->BlendDstA);
 929                /* This special case is because glBlendEquationSeparateEXT
 930                 * cannot take GL_LOGIC_OP as a parameter.
 931                 */
 932                if ( color->BlendEquationRGB == color->BlendEquationA ) {
 933                   _mesa_BlendEquation(color->BlendEquationRGB);
 934                }
 935                else {
 936                   _mesa_BlendEquationSeparateEXT(color->BlendEquationRGB,
 937                                                  color->BlendEquationA);
 938                }
 939                _mesa_BlendColor(color->BlendColor[0],
 940                                 color->BlendColor[1],
 941                                 color->BlendColor[2],
 942                                 color->BlendColor[3]);
 943                _mesa_LogicOp(color->LogicOp);
 944                _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP,
 945                                 color->ColorLogicOpEnabled);
 946                _mesa_set_enable(ctx, GL_INDEX_LOGIC_OP,
 947                                 color->IndexLogicOpEnabled);
 948                _mesa_set_enable(ctx, GL_DITHER, color->DitherFlag);
 949             }
 950             break;
 951          case GL_CURRENT_BIT:
 952             FLUSH_CURRENT( ctx, 0 );
 953             MEMCPY( &ctx->Current, attr->data,
 954                     sizeof(struct gl_current_attrib) );
 955             break;
 956          case GL_DEPTH_BUFFER_BIT:
 957             {
 958                const struct gl_depthbuffer_attrib *depth;
 959                depth = (const struct gl_depthbuffer_attrib *) attr->data;
 960                _mesa_DepthFunc(depth->Func);
 961                _mesa_ClearDepth(depth->Clear);
 962                _mesa_set_enable(ctx, GL_DEPTH_TEST, depth->Test);
 963                _mesa_DepthMask(depth->Mask);
 964             }
 965             break;
 966          case GL_ENABLE_BIT:
 967             {
 968                const struct gl_enable_attrib *enable;
 969                enable = (const struct gl_enable_attrib *) attr->data;
 970                pop_enable_group(ctx, enable);
 971                ctx->NewState |= _NEW_ALL;
 972             }
 973             break;
 974          case GL_EVAL_BIT:
 975             MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
 976             ctx->NewState |= _NEW_EVAL;
 977             break;
 978          case GL_FOG_BIT:
 979             {
 980                const struct gl_fog_attrib *fog;
 981                fog = (const struct gl_fog_attrib *) attr->data;
 982                _mesa_set_enable(ctx, GL_FOG, fog->Enabled);
 983                _mesa_Fogfv(GL_FOG_COLOR, fog->Color);
 984                _mesa_Fogf(GL_FOG_DENSITY, fog->Density);
 985                _mesa_Fogf(GL_FOG_START, fog->Start);
 986                _mesa_Fogf(GL_FOG_END, fog->End);
 987                _mesa_Fogf(GL_FOG_INDEX, fog->Index);
 988                _mesa_Fogi(GL_FOG_MODE, fog->Mode);
 989             }
 990             break;
 991          case GL_HINT_BIT:
 992             {
 993                const struct gl_hint_attrib *hint;
 994                hint = (const struct gl_hint_attrib *) attr->data;
 995                _mesa_Hint(GL_PERSPECTIVE_CORRECTION_HINT,
 996                           hint->PerspectiveCorrection );
 997                _mesa_Hint(GL_POINT_SMOOTH_HINT, hint->PointSmooth);
 998                _mesa_Hint(GL_LINE_SMOOTH_HINT, hint->LineSmooth);
 999                _mesa_Hint(GL_POLYGON_SMOOTH_HINT, hint->PolygonSmooth);
1000                _mesa_Hint(GL_FOG_HINT, hint->Fog);
1001                _mesa_Hint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT,
1002                           hint->ClipVolumeClipping);
1003                if (ctx->Extensions.ARB_texture_compression)
1004                   _mesa_Hint(GL_TEXTURE_COMPRESSION_HINT_ARB,
1005                              hint->TextureCompression);
1006             }
1007             break;
1008          case GL_LIGHTING_BIT:
1009             {
1010                GLuint i;
1011                const struct gl_light_attrib *light;
1012                light = (const struct gl_light_attrib *) attr->data;
1013                /* lighting enable */
1014                _mesa_set_enable(ctx, GL_LIGHTING, light->Enabled);
1015                /* per-light state */
1016                if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top))
1017                   _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
1018
1019                for (i = 0; i < ctx->Const.MaxLights; i++) {
1020                   const struct gl_light *l = &light->Light[i];
1021                   _mesa_set_enable(ctx, GL_LIGHT0 + i, l->Enabled);
1022                   _mesa_light(ctx, i, GL_AMBIENT, l->Ambient);
1023                   _mesa_light(ctx, i, GL_DIFFUSE, l->Diffuse);
1024                   _mesa_light(ctx, i, GL_SPECULAR, l->Specular );
1025                   _mesa_light(ctx, i, GL_POSITION, l->EyePosition);
1026                   _mesa_light(ctx, i, GL_SPOT_DIRECTION, l->EyeDirection);
1027                   _mesa_light(ctx, i, GL_SPOT_EXPONENT, &l->SpotExponent);
1028                   _mesa_light(ctx, i, GL_SPOT_CUTOFF, &l->SpotCutoff);
1029                   _mesa_light(ctx, i, GL_CONSTANT_ATTENUATION,
1030                               &l->ConstantAttenuation);
1031                   _mesa_light(ctx, i, GL_LINEAR_ATTENUATION,
1032                               &l->LinearAttenuation);
1033                   _mesa_light(ctx, i, GL_QUADRATIC_ATTENUATION,
1034                               &l->QuadraticAttenuation);
1035                }
1036                /* light model */
1037                _mesa_LightModelfv(GL_LIGHT_MODEL_AMBIENT,
1038                                   light->Model.Ambient);
1039                _mesa_LightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER,
1040                                  (GLfloat) light->Model.LocalViewer);
1041                _mesa_LightModelf(GL_LIGHT_MODEL_TWO_SIDE,
1042                                  (GLfloat) light->Model.TwoSide);
1043                _mesa_LightModelf(GL_LIGHT_MODEL_COLOR_CONTROL,
1044                                  (GLfloat) light->Model.ColorControl);
1045                /* shade model */
1046                _mesa_ShadeModel(light->ShadeModel);
1047                /* color material */
1048                _mesa_ColorMaterial(light->ColorMaterialFace,
1049                                    light->ColorMaterialMode);
1050                _mesa_set_enable(ctx, GL_COLOR_MATERIAL,
1051                                 light->ColorMaterialEnabled);
1052                /* materials */
1053                MEMCPY(&ctx->Light.Material, &light->Material,
1054                       sizeof(struct gl_material));
1055             }
1056             break;
1057          case GL_LINE_BIT:
1058             {
1059                const struct gl_line_attrib *line;
1060                line = (const struct gl_line_attrib *) attr->data;
1061                _mesa_set_enable(ctx, GL_LINE_SMOOTH, line->SmoothFlag);
1062                _mesa_set_enable(ctx, GL_LINE_STIPPLE, line->StippleFlag);
1063                _mesa_LineStipple(line->StippleFactor, line->StipplePattern);
1064                _mesa_LineWidth(line->Width);
1065             }
1066             break;
1067          case GL_LIST_BIT:
1068             MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
1069             break;
1070          case GL_PIXEL_MODE_BIT:
1071             MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
1072             /* XXX what other pixel state needs to be set by function calls? */
1073             _mesa_ReadBuffer(ctx->Pixel.ReadBuffer);
1074             ctx->NewState |= _NEW_PIXEL;
1075             break;
1076          case GL_POINT_BIT:
1077             {
1078                const struct gl_point_attrib *point;
1079                point = (const struct gl_point_attrib *) attr->data;
1080                _mesa_PointSize(point->Size);
1081                _mesa_set_enable(ctx, GL_POINT_SMOOTH, point->SmoothFlag);
1082                if (ctx->Extensions.EXT_point_parameters) {
1083                   _mesa_PointParameterfv(GL_DISTANCE_ATTENUATION_EXT,
1084                                          point->Params);
1085                   _mesa_PointParameterf(GL_POINT_SIZE_MIN_EXT,
1086                                         point->MinSize);
1087                   _mesa_PointParameterf(GL_POINT_SIZE_MAX_EXT,
1088                                         point->MaxSize);
1089                   _mesa_PointParameterf(GL_POINT_FADE_THRESHOLD_SIZE_EXT,
1090                                         point->Threshold);
1091                }
1092                if (ctx->Extensions.NV_point_sprite
1093                    || ctx->Extensions.ARB_point_sprite) {
1094                   GLuint u;
1095                   for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
1096                      _mesa_TexEnvi(GL_POINT_SPRITE_NV, GL_COORD_REPLACE_NV,
1097                                    (GLint) point->CoordReplace[u]);
1098                   }
1099                   _mesa_set_enable(ctx, GL_POINT_SPRITE_NV,point->PointSprite);
1100                   _mesa_PointParameteri(GL_POINT_SPRITE_R_MODE_NV,
1101                                         ctx->Point.SpriteRMode);
1102                   _mesa_PointParameterf(GL_POINT_SPRITE_COORD_ORIGIN,
1103                                         (GLfloat)ctx->Point.SpriteOrigin);
1104                }
1105             }
1106             break;
1107          case GL_POLYGON_BIT:
1108             {
1109                const struct gl_polygon_attrib *polygon;
1110                polygon = (const struct gl_polygon_attrib *) attr->data;
1111                _mesa_CullFace(polygon->CullFaceMode);
1112                _mesa_FrontFace(polygon->FrontFace);
1113                _mesa_PolygonMode(GL_FRONT, polygon->FrontMode);
1114                _mesa_PolygonMode(GL_BACK, polygon->BackMode);
1115                _mesa_PolygonOffset(polygon->OffsetFactor,
1116                                    polygon->OffsetUnits);
1117                _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, polygon->SmoothFlag);
1118                _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, polygon->StippleFlag);
1119                _mesa_set_enable(ctx, GL_CULL_FACE, polygon->CullFlag);
1120                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_POINT,
1121                                 polygon->OffsetPoint);
1122                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_LINE,
1123                                 polygon->OffsetLine);
1124                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL,
1125                                 polygon->OffsetFill);
1126             }
1127             break;
1128          case GL_POLYGON_STIPPLE_BIT:
1129             MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
1130             ctx->NewState |= _NEW_POLYGONSTIPPLE;
1131             if (ctx->Driver.PolygonStipple)
1132                ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data );
1133             break;
1134          case GL_SCISSOR_BIT:
1135             {
1136                const struct gl_scissor_attrib *scissor;
1137                scissor = (const struct gl_scissor_attrib *) attr->data;
1138                _mesa_Scissor(scissor->X, scissor->Y,
1139                              scissor->Width, scissor->Height);
1140                _mesa_set_enable(ctx, GL_SCISSOR_TEST, scissor->Enabled);
1141             }
1142             break;
1143          case GL_STENCIL_BUFFER_BIT:
1144             {
1145                const struct gl_stencil_attrib *stencil;
1146                stencil = (const struct gl_stencil_attrib *) attr->data;
1147                _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);
1148                _mesa_ClearStencil(stencil->Clear);
1149                if (ctx->Extensions.EXT_stencil_two_side) {
1150                   _mesa_set_enable(ctx, GL_STENCIL_TEST_TWO_SIDE_EXT,
1151                                    stencil->TestTwoSide);
1152                   _mesa_ActiveStencilFaceEXT(stencil->ActiveFace
1153                                              ? GL_BACK : GL_FRONT);
1154                }
1155                /* front state */
1156                _mesa_StencilFuncSeparate(GL_FRONT,
1157                                          stencil->Function[0],
1158                                          stencil->Ref[0],
1159                                          stencil->ValueMask[0]);
1160                _mesa_StencilMaskSeparate(GL_FRONT, stencil->WriteMask[0]);
1161                _mesa_StencilOpSeparate(GL_FRONT, stencil->FailFunc[0],
1162                                        stencil->ZFailFunc[0],
1163                                        stencil->ZPassFunc[0]);
1164                /* back state */
1165                _mesa_StencilFuncSeparate(GL_BACK,
1166                                          stencil->Function[1],
1167                                          stencil->Ref[1],
1168                                          stencil->ValueMask[1]);
1169                _mesa_StencilMaskSeparate(GL_BACK, stencil->WriteMask[1]);
1170                _mesa_StencilOpSeparate(GL_BACK, stencil->FailFunc[1],
1171                                        stencil->ZFailFunc[1],
1172                                        stencil->ZPassFunc[1]);
1173             }
1174             break;
1175          case GL_TRANSFORM_BIT:
1176             {
1177                GLuint i;
1178                const struct gl_transform_attrib *xform;
1179                xform = (const struct gl_transform_attrib *) attr->data;
1180                _mesa_MatrixMode(xform->MatrixMode);
1181                if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top))
1182                   _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
1183
1184                /* restore clip planes */
1185                for (i = 0; i < MAX_CLIP_PLANES; i++) {
1186                   const GLuint mask = 1 << 1;
1187                   const GLfloat *eyePlane = xform->EyeUserPlane[i];
1188                   COPY_4V(ctx->Transform.EyeUserPlane[i], eyePlane);
1189                   if (xform->ClipPlanesEnabled & mask) {
1190                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE);
1191                   }
1192                   else {
1193                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_FALSE);
1194                   }
1195                   if (ctx->Driver.ClipPlane)
1196                      ctx->Driver.ClipPlane( ctx, GL_CLIP_PLANE0 + i, eyePlane );
1197                }
1198
1199                /* normalize/rescale */
1200                if (xform->Normalize != ctx->Transform.Normalize)
1201                   _mesa_set_enable(ctx, GL_NORMALIZE,ctx->Transform.Normalize);
1202                if (xform->RescaleNormals != ctx->Transform.RescaleNormals)
1203                   _mesa_set_enable(ctx, GL_RESCALE_NORMAL_EXT,
1204                                    ctx->Transform.RescaleNormals);
1205             }
1206             break;
1207          case GL_TEXTURE_BIT:
1208             /* Take care of texture object reference counters */
1209             {
1210                const struct gl_texture_attrib *texture;
1211                texture = (const struct gl_texture_attrib *) attr->data;
1212                pop_texture_group(ctx, texture);
1213                ctx->NewState |= _NEW_TEXTURE;
1214             }
1215             break;
1216          case GL_VIEWPORT_BIT:
1217             {
1218                const struct gl_viewport_attrib *vp;
1219                vp = (const struct gl_viewport_attrib *) attr->data;
1220                _mesa_Viewport(vp->X, vp->Y, vp->Width, vp->Height);
1221                _mesa_DepthRange(vp->Near, vp->Far);
1222             }
1223             break;
1224          case GL_MULTISAMPLE_BIT_ARB:
1225             {
1226                const struct gl_multisample_attrib *ms;
1227                ms = (const struct gl_multisample_attrib *) attr->data;
1228                _mesa_SampleCoverageARB(ms->SampleCoverageValue,
1229                                        ms->SampleCoverageInvert);
1230             }
1231             break;
1232
1233          default:
1234             _mesa_problem( ctx, "Bad attrib flag in PopAttrib");
1235             break;
1236       }
1237
1238       next = attr->next;
1239       FREE( attr->data );
1240       FREE( attr );
1241       attr = next;
1242    }
1243 }
1244
1245
1246 /**
1247  * Helper for incrementing/decrementing vertex buffer object reference
1248  * counts when pushing/popping the GL_CLIENT_VERTEX_ARRAY_BIT attribute group.
1249  */
1250 static void
1251 adjust_buffer_object_ref_counts(struct gl_array_attrib *array, GLint step)
1252 {
1253    GLuint i;
1254    array->ArrayObj->Vertex.BufferObj->RefCount += step;
1255    array->ArrayObj->Normal.BufferObj->RefCount += step;
1256    array->ArrayObj->Color.BufferObj->RefCount += step;
1257    array->ArrayObj->SecondaryColor.BufferObj->RefCount += step;
1258    array->ArrayObj->FogCoord.BufferObj->RefCount += step;
1259    array->ArrayObj->Index.BufferObj->RefCount += step;
1260    array->ArrayObj->EdgeFlag.BufferObj->RefCount += step;
1261    for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++)
1262       array->ArrayObj->TexCoord[i].BufferObj->RefCount += step;
1263    for (i = 0; i < VERT_ATTRIB_MAX; i++)
1264       array->ArrayObj->VertexAttrib[i].BufferObj->RefCount += step;
1265
1266    array->ArrayBufferObj->RefCount += step;
1267    array->ElementArrayBufferObj->RefCount += step;
1268 }
1269
1270
1271 #define GL_CLIENT_PACK_BIT (1<<20)
1272 #define GL_CLIENT_UNPACK_BIT (1<<21)
1273
1274
1275 void GLAPIENTRY
1276 _mesa_PushClientAttrib(GLbitfield mask)
1277 {
1278    struct gl_attrib_node *newnode;
1279    struct gl_attrib_node *head;
1280
1281    GET_CURRENT_CONTEXT(ctx);
1282    ASSERT_OUTSIDE_BEGIN_END(ctx);
1283
1284    if (ctx->ClientAttribStackDepth >= MAX_CLIENT_ATTRIB_STACK_DEPTH) {
1285       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
1286       return;
1287    }
1288
1289    /* Build linked list of attribute nodes which save all attribute */
1290    /* groups specified by the mask. */
1291    head = NULL;
1292
1293    if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
1294       struct gl_pixelstore_attrib *attr;
1295 #if FEATURE_EXT_pixel_buffer_object
1296       ctx->Pack.BufferObj->RefCount++;
1297       ctx->Unpack.BufferObj->RefCount++;
1298 #endif
1299       /* packing attribs */
1300       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1301       MEMCPY( attr, &ctx->Pack, sizeof(struct gl_pixelstore_attrib) );
1302       newnode = new_attrib_node( GL_CLIENT_PACK_BIT );
1303       newnode->data = attr;
1304       newnode->next = head;
1305       head = newnode;
1306       /* unpacking attribs */
1307       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1308       MEMCPY( attr, &ctx->Unpack, sizeof(struct gl_pixelstore_attrib) );
1309       newnode = new_attrib_node( GL_CLIENT_UNPACK_BIT );
1310       newnode->data = attr;
1311       newnode->next = head;
1312       head = newnode;
1313    }
1314    if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
1315       struct gl_array_attrib *attr;
1316       struct gl_array_object *obj;
1317
1318       attr = MALLOC_STRUCT( gl_array_attrib );
1319       obj = MALLOC_STRUCT( gl_array_object );
1320
1321 #if FEATURE_ARB_vertex_buffer_object
1322       /* increment ref counts since we're copying pointers to these objects */
1323       ctx->Array.ArrayBufferObj->RefCount++;
1324       ctx->Array.ElementArrayBufferObj->RefCount++;
1325 #endif
1326
1327       MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
1328       MEMCPY( obj, ctx->Array.ArrayObj, sizeof(struct gl_array_object) );
1329
1330       attr->ArrayObj = obj;
1331
1332       newnode = new_attrib_node( GL_CLIENT_VERTEX_ARRAY_BIT );
1333       newnode->data = attr;
1334       newnode->next = head;
1335       head = newnode;
1336       /* bump reference counts on buffer objects */
1337       adjust_buffer_object_ref_counts(&ctx->Array, 1);
1338    }
1339
1340    ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
1341    ctx->ClientAttribStackDepth++;
1342 }
1343
1344
1345
1346
1347 void GLAPIENTRY
1348 _mesa_PopClientAttrib(void)
1349 {
1350    struct gl_attrib_node *attr, *next;
1351
1352    GET_CURRENT_CONTEXT(ctx);
1353    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1354
1355    if (ctx->ClientAttribStackDepth == 0) {
1356       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
1357       return;
1358    }
1359
1360    ctx->ClientAttribStackDepth--;
1361    attr = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
1362
1363    while (attr) {
1364       switch (attr->kind) {
1365          case GL_CLIENT_PACK_BIT:
1366 #if FEATURE_EXT_pixel_buffer_object
1367             ctx->Pack.BufferObj->RefCount--;
1368             if (ctx->Pack.BufferObj->RefCount <= 0) {
1369                _mesa_remove_buffer_object( ctx, ctx->Pack.BufferObj );
1370                (*ctx->Driver.DeleteBuffer)( ctx, ctx->Pack.BufferObj );
1371             }
1372 #endif
1373             MEMCPY( &ctx->Pack, attr->data,
1374                     sizeof(struct gl_pixelstore_attrib) );
1375             ctx->NewState |= _NEW_PACKUNPACK;
1376             break;
1377          case GL_CLIENT_UNPACK_BIT:
1378 #if FEATURE_EXT_pixel_buffer_object
1379             ctx->Unpack.BufferObj->RefCount--;
1380             if (ctx->Unpack.BufferObj->RefCount <= 0) {
1381                _mesa_remove_buffer_object( ctx, ctx->Unpack.BufferObj );
1382                (*ctx->Driver.DeleteBuffer)( ctx, ctx->Unpack.BufferObj );
1383             }
1384 #endif
1385             MEMCPY( &ctx->Unpack, attr->data,
1386                     sizeof(struct gl_pixelstore_attrib) );
1387             ctx->NewState |= _NEW_PACKUNPACK;
1388             break;
1389          case GL_CLIENT_VERTEX_ARRAY_BIT: {
1390             struct gl_array_attrib * data =
1391               (struct gl_array_attrib *) attr->data;
1392
1393             adjust_buffer_object_ref_counts(&ctx->Array, -1);
1394
1395             ctx->Array.ActiveTexture = data->ActiveTexture;
1396             ctx->Array.LockFirst = data->LockFirst;
1397             ctx->Array.LockCount = data->LockCount;
1398
1399             _mesa_BindVertexArrayAPPLE( data->ArrayObj->Name );
1400
1401 #if FEATURE_ARB_vertex_buffer_object
1402             _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB,
1403                                 data->ArrayBufferObj->Name);
1404             _mesa_BindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB,
1405                                 data->ElementArrayBufferObj->Name);
1406 #endif
1407
1408             MEMCPY( ctx->Array.ArrayObj, data->ArrayObj,
1409                     sizeof( struct gl_array_object ) );
1410
1411             FREE( data->ArrayObj );
1412
1413             /* FIXME: Should some bits in ctx->Array->NewState also be set
1414              * FIXME: here?  It seems like it should be set to inclusive-or
1415              * FIXME: of the old ArrayObj->_Enabled and the new _Enabled.
1416              */
1417
1418             ctx->NewState |= _NEW_ARRAY;
1419             break;
1420          }
1421          default:
1422             _mesa_problem( ctx, "Bad attrib flag in PopClientAttrib");
1423             break;
1424       }
1425
1426       next = attr->next;
1427       FREE( attr->data );
1428       FREE( attr );
1429       attr = next;
1430    }
1431 }
1432
1433
1434 void _mesa_init_attrib( GLcontext *ctx )
1435 {
1436    /* Renderer and client attribute stacks */
1437    ctx->AttribStackDepth = 0;
1438    ctx->ClientAttribStackDepth = 0;
1439 }