src/mesa/main/attrib.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.2
   4  *
   5  * Copyright (C) 1999-2008  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
 365       attr = MALLOC_STRUCT( gl_texture_attrib );
 366       MEMCPY( attr, &ctx->Texture, sizeof(struct gl_texture_attrib) );
 367       /* copy state of the currently bound texture objects */
 368       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 369          _mesa_copy_texture_object(&attr->Unit[u].Saved1D,
 370                                    attr->Unit[u].Current1D);
 371          _mesa_copy_texture_object(&attr->Unit[u].Saved2D,
 372                                    attr->Unit[u].Current2D);
 373          _mesa_copy_texture_object(&attr->Unit[u].Saved3D,
 374                                    attr->Unit[u].Current3D);
 375          _mesa_copy_texture_object(&attr->Unit[u].SavedCubeMap,
 376                                    attr->Unit[u].CurrentCubeMap);
 377          _mesa_copy_texture_object(&attr->Unit[u].SavedRect,
 378                                    attr->Unit[u].CurrentRect);
 379          _mesa_copy_texture_object(&attr->Unit[u].Saved1DArray,
 380                                    attr->Unit[u].Current1DArray);
 381          _mesa_copy_texture_object(&attr->Unit[u].Saved2DArray,
 382                                    attr->Unit[u].Current2DArray);
 383       }
 384
 385       _mesa_unlock_context_textures(ctx);
 386
 387       newnode = new_attrib_node( GL_TEXTURE_BIT );
 388       newnode->data = attr;
 389       newnode->next = head;
 390       head = newnode;
 391    }
 392
 393    if (mask & GL_TRANSFORM_BIT) {
 394       struct gl_transform_attrib *attr;
 395       attr = MALLOC_STRUCT( gl_transform_attrib );
 396       MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
 397       newnode = new_attrib_node( GL_TRANSFORM_BIT );
 398       newnode->data = attr;
 399       newnode->next = head;
 400       head = newnode;
 401    }
 402
 403    if (mask & GL_VIEWPORT_BIT) {
 404       struct gl_viewport_attrib *attr;
 405       attr = MALLOC_STRUCT( gl_viewport_attrib );
 406       MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
 407       newnode = new_attrib_node( GL_VIEWPORT_BIT );
 408       newnode->data = attr;
 409       newnode->next = head;
 410       head = newnode;
 411    }
 412
 413    /* GL_ARB_multisample */
 414    if (mask & GL_MULTISAMPLE_BIT_ARB) {
 415       struct gl_multisample_attrib *attr;
 416       attr = MALLOC_STRUCT( gl_multisample_attrib );
 417       MEMCPY( attr, &ctx->Multisample, sizeof(struct gl_multisample_attrib) );
 418       newnode = new_attrib_node( GL_MULTISAMPLE_BIT_ARB );
 419       newnode->data = attr;
 420       newnode->next = head;
 421       head = newnode;
 422    }
 423
 424    ctx->AttribStack[ctx->AttribStackDepth] = head;
 425    ctx->AttribStackDepth++;
 426 }
 427
 428
 429
 430 static void
 431 pop_enable_group(GLcontext *ctx, const struct gl_enable_attrib *enable)
 432 {
 433    GLuint i;
 434
 435 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)          \
 436         if ((VALUE) != (NEWVALUE)) {                    \
 437            _mesa_set_enable( ctx, ENUM, (NEWVALUE) );   \
 438         }
 439
 440    TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
 441    TEST_AND_UPDATE(ctx->Color.BlendEnabled, enable->Blend, GL_BLEND);
 442
 443    for (i=0;i<MAX_CLIP_PLANES;i++) {
 444       const GLuint mask = 1 << i;
 445       if ((ctx->Transform.ClipPlanesEnabled & mask) != (enable->ClipPlanes & mask))
 446           _mesa_set_enable(ctx, (GLenum) (GL_CLIP_PLANE0 + i),
 447                            (GLboolean) ((enable->ClipPlanes & mask) ? GL_TRUE : GL_FALSE));
 448    }
 449
 450    TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial,
 451                    GL_COLOR_MATERIAL);
 452    TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled[COLORTABLE_PRECONVOLUTION],
 453                    enable->ColorTable[COLORTABLE_PRECONVOLUTION],
 454                    GL_COLOR_TABLE);
 455    TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled[COLORTABLE_POSTCONVOLUTION],
 456                    enable->ColorTable[COLORTABLE_POSTCONVOLUTION],
 457                    GL_POST_CONVOLUTION_COLOR_TABLE);
 458    TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled[COLORTABLE_POSTCOLORMATRIX],
 459                    enable->ColorTable[COLORTABLE_POSTCOLORMATRIX],
 460                    GL_POST_COLOR_MATRIX_COLOR_TABLE);
 461    TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
 462    TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
 463    TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
 464    TEST_AND_UPDATE(ctx->Pixel.Convolution1DEnabled, enable->Convolution1D,
 465                    GL_CONVOLUTION_1D);
 466    TEST_AND_UPDATE(ctx->Pixel.Convolution2DEnabled, enable->Convolution2D,
 467                    GL_CONVOLUTION_2D);
 468    TEST_AND_UPDATE(ctx->Pixel.Separable2DEnabled, enable->Separable2D,
 469                    GL_SEPARABLE_2D);
 470    TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
 471    TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
 472    TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
 473    TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple,
 474                    GL_LINE_STIPPLE);
 475    TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp,
 476                    GL_INDEX_LOGIC_OP);
 477    TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp,
 478                    GL_COLOR_LOGIC_OP);
 479
 480    TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
 481    TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
 482    TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
 483    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1,
 484                    GL_MAP1_TEXTURE_COORD_1);
 485    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2,
 486                    GL_MAP1_TEXTURE_COORD_2);
 487    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3,
 488                    GL_MAP1_TEXTURE_COORD_3);
 489    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4,
 490                    GL_MAP1_TEXTURE_COORD_4);
 491    TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3,
 492                    GL_MAP1_VERTEX_3);
 493    TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4,
 494                    GL_MAP1_VERTEX_4);
 495    for (i = 0; i < 16; i++) {
 496       TEST_AND_UPDATE(ctx->Eval.Map1Attrib[i], enable->Map1Attrib[i],
 497                       GL_MAP1_VERTEX_ATTRIB0_4_NV + i);
 498    }
 499
 500    TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
 501    TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
 502    TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
 503    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1,
 504                    GL_MAP2_TEXTURE_COORD_1);
 505    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2,
 506                    GL_MAP2_TEXTURE_COORD_2);
 507    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3,
 508                    GL_MAP2_TEXTURE_COORD_3);
 509    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4,
 510                    GL_MAP2_TEXTURE_COORD_4);
 511    TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3,
 512                    GL_MAP2_VERTEX_3);
 513    TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4,
 514                    GL_MAP2_VERTEX_4);
 515    for (i = 0; i < 16; i++) {
 516       TEST_AND_UPDATE(ctx->Eval.Map2Attrib[i], enable->Map2Attrib[i],
 517                       GL_MAP2_VERTEX_ATTRIB0_4_NV + i);
 518    }
 519
 520    TEST_AND_UPDATE(ctx->Eval.AutoNormal, enable->AutoNormal, GL_AUTO_NORMAL);
 521    TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
 522    TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals,
 523                    GL_RESCALE_NORMAL_EXT);
 524    TEST_AND_UPDATE(ctx->Transform.RasterPositionUnclipped,
 525                    enable->RasterPositionUnclipped,
 526                    GL_RASTER_POSITION_UNCLIPPED_IBM);
 527    TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth,
 528                    GL_POINT_SMOOTH);
 529    if (ctx->Extensions.NV_point_sprite || ctx->Extensions.ARB_point_sprite) {
 530       TEST_AND_UPDATE(ctx->Point.PointSprite, enable->PointSprite,
 531                       GL_POINT_SPRITE_NV);
 532    }
 533    TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint,
 534                    GL_POLYGON_OFFSET_POINT);
 535    TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine,
 536                    GL_POLYGON_OFFSET_LINE);
 537    TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill,
 538                    GL_POLYGON_OFFSET_FILL);
 539    TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth,
 540                    GL_POLYGON_SMOOTH);
 541    TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple,
 542                    GL_POLYGON_STIPPLE);
 543    TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
 544    TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
 545    if (ctx->Extensions.EXT_stencil_two_side) {
 546       TEST_AND_UPDATE(ctx->Stencil.TestTwoSide, enable->StencilTwoSide, GL_STENCIL_TEST_TWO_SIDE_EXT);
 547    }
 548    TEST_AND_UPDATE(ctx->Multisample.Enabled, enable->MultisampleEnabled,
 549                    GL_MULTISAMPLE_ARB);
 550    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToCoverage,
 551                    enable->SampleAlphaToCoverage,
 552                    GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
 553    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToOne,
 554                    enable->SampleAlphaToOne,
 555                    GL_SAMPLE_ALPHA_TO_ONE_ARB);
 556    TEST_AND_UPDATE(ctx->Multisample.SampleCoverage,
 557                    enable->SampleCoverage,
 558                    GL_SAMPLE_COVERAGE_ARB);
 559    TEST_AND_UPDATE(ctx->Multisample.SampleCoverageInvert,
 560                    enable->SampleCoverageInvert,
 561                    GL_SAMPLE_COVERAGE_INVERT_ARB);
 562    /* GL_ARB_vertex_program, GL_NV_vertex_program */
 563    TEST_AND_UPDATE(ctx->VertexProgram.Enabled,
 564                    enable->VertexProgram,
 565                    GL_VERTEX_PROGRAM_ARB);
 566    TEST_AND_UPDATE(ctx->VertexProgram.PointSizeEnabled,
 567                    enable->VertexProgramPointSize,
 568                    GL_VERTEX_PROGRAM_POINT_SIZE_ARB);
 569    TEST_AND_UPDATE(ctx->VertexProgram.TwoSideEnabled,
 570                    enable->VertexProgramTwoSide,
 571                    GL_VERTEX_PROGRAM_TWO_SIDE_ARB);
 572
 573 #undef TEST_AND_UPDATE
 574
 575    /* texture unit enables */
 576    for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
 577       if (ctx->Texture.Unit[i].Enabled != enable->Texture[i]) {
 578          ctx->Texture.Unit[i].Enabled = enable->Texture[i];
 579          if (ctx->Driver.Enable) {
 580             if (ctx->Driver.ActiveTexture) {
 581                (*ctx->Driver.ActiveTexture)(ctx, i);
 582             }
 583             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D,
 584                              (GLboolean) (enable->Texture[i] & TEXTURE_1D_BIT) );
 585             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D,
 586                              (GLboolean) (enable->Texture[i] & TEXTURE_2D_BIT) );
 587             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D,
 588                              (GLboolean) (enable->Texture[i] & TEXTURE_3D_BIT) );
 589             if (ctx->Extensions.ARB_texture_cube_map)
 590                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_CUBE_MAP_ARB,
 591                           (GLboolean) (enable->Texture[i] & TEXTURE_CUBE_BIT) );
 592             if (ctx->Extensions.NV_texture_rectangle)
 593                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_RECTANGLE_NV,
 594                           (GLboolean) (enable->Texture[i] & TEXTURE_RECT_BIT) );
 595          }
 596       }
 597
 598       if (ctx->Texture.Unit[i].TexGenEnabled != enable->TexGen[i]) {
 599          ctx->Texture.Unit[i].TexGenEnabled = enable->TexGen[i];
 600          if (ctx->Driver.Enable) {
 601             if (ctx->Driver.ActiveTexture) {
 602                (*ctx->Driver.ActiveTexture)(ctx, i);
 603             }
 604             if (enable->TexGen[i] & S_BIT)
 605                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_TRUE);
 606             else
 607                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_FALSE);
 608             if (enable->TexGen[i] & T_BIT)
 609                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_TRUE);
 610             else
 611                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_FALSE);
 612             if (enable->TexGen[i] & R_BIT)
 613                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_TRUE);
 614             else
 615                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_FALSE);
 616             if (enable->TexGen[i] & Q_BIT)
 617                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
 618             else
 619                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
 620          }
 621       }
 622
 623       /* GL_SGI_texture_color_table */
 624       ctx->Texture.Unit[i].ColorTableEnabled = enable->TextureColorTable[i];
 625    }
 626
 627    if (ctx->Driver.ActiveTexture) {
 628       (*ctx->Driver.ActiveTexture)(ctx, ctx->Texture.CurrentUnit);
 629    }
 630 }
 631
 632
 633 static void
 634 pop_texture_group(GLcontext *ctx, const struct gl_texture_attrib *texAttrib)
 635 {
 636    GLuint u;
 637
 638    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 639       const struct gl_texture_unit *unit = &texAttrib->Unit[u];
 640       GLuint i;
 641
 642       _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + u);
 643       _mesa_set_enable(ctx, GL_TEXTURE_1D,
 644                        (unit->Enabled & TEXTURE_1D_BIT) ? GL_TRUE : GL_FALSE);
 645       _mesa_set_enable(ctx, GL_TEXTURE_2D,
 646                        (unit->Enabled & TEXTURE_2D_BIT) ? GL_TRUE : GL_FALSE);
 647       _mesa_set_enable(ctx, GL_TEXTURE_3D,
 648                        (unit->Enabled & TEXTURE_3D_BIT) ? GL_TRUE : GL_FALSE);
 649       if (ctx->Extensions.ARB_texture_cube_map) {
 650          _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP_ARB,
 651                      (unit->Enabled & TEXTURE_CUBE_BIT) ? GL_TRUE : GL_FALSE);
 652       }
 653       if (ctx->Extensions.NV_texture_rectangle) {
 654          _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_NV,
 655                      (unit->Enabled & TEXTURE_RECT_BIT) ? GL_TRUE : GL_FALSE);
 656       }
 657       if (ctx->Extensions.SGI_texture_color_table) {
 658          _mesa_set_enable(ctx, GL_TEXTURE_COLOR_TABLE_SGI,
 659                           unit->ColorTableEnabled);
 660       }
 661       _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->EnvMode);
 662       _mesa_TexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, unit->EnvColor);
 663       _mesa_TexGeni(GL_S, GL_TEXTURE_GEN_MODE, unit->GenModeS);
 664       _mesa_TexGeni(GL_T, GL_TEXTURE_GEN_MODE, unit->GenModeT);
 665       _mesa_TexGeni(GL_R, GL_TEXTURE_GEN_MODE, unit->GenModeR);
 666       _mesa_TexGeni(GL_Q, GL_TEXTURE_GEN_MODE, unit->GenModeQ);
 667       _mesa_TexGenfv(GL_S, GL_OBJECT_PLANE, unit->ObjectPlaneS);
 668       _mesa_TexGenfv(GL_T, GL_OBJECT_PLANE, unit->ObjectPlaneT);
 669       _mesa_TexGenfv(GL_R, GL_OBJECT_PLANE, unit->ObjectPlaneR);
 670       _mesa_TexGenfv(GL_Q, GL_OBJECT_PLANE, unit->ObjectPlaneQ);
 671       /* Eye plane done differently to avoid re-transformation */
 672       {
 673          struct gl_texture_unit *destUnit = &ctx->Texture.Unit[u];
 674          COPY_4FV(destUnit->EyePlaneS, unit->EyePlaneS);
 675          COPY_4FV(destUnit->EyePlaneT, unit->EyePlaneT);
 676          COPY_4FV(destUnit->EyePlaneR, unit->EyePlaneR);
 677          COPY_4FV(destUnit->EyePlaneQ, unit->EyePlaneQ);
 678          if (ctx->Driver.TexGen) {
 679             ctx->Driver.TexGen(ctx, GL_S, GL_EYE_PLANE, unit->EyePlaneS);
 680             ctx->Driver.TexGen(ctx, GL_T, GL_EYE_PLANE, unit->EyePlaneT);
 681             ctx->Driver.TexGen(ctx, GL_R, GL_EYE_PLANE, unit->EyePlaneR);
 682             ctx->Driver.TexGen(ctx, GL_Q, GL_EYE_PLANE, unit->EyePlaneQ);
 683          }
 684       }
 685       _mesa_set_enable(ctx, GL_TEXTURE_GEN_S,
 686                        ((unit->TexGenEnabled & S_BIT) ? GL_TRUE : GL_FALSE));
 687       _mesa_set_enable(ctx, GL_TEXTURE_GEN_T,
 688                        ((unit->TexGenEnabled & T_BIT) ? GL_TRUE : GL_FALSE));
 689       _mesa_set_enable(ctx, GL_TEXTURE_GEN_R,
 690                        ((unit->TexGenEnabled & R_BIT) ? GL_TRUE : GL_FALSE));
 691       _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q,
 692                        ((unit->TexGenEnabled & Q_BIT) ? GL_TRUE : GL_FALSE));
 693       if (ctx->Extensions.EXT_texture_lod_bias) {
 694          _mesa_TexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
 695                        GL_TEXTURE_LOD_BIAS_EXT, unit->LodBias);
 696       }
 697       if (ctx->Extensions.EXT_texture_env_combine ||
 698           ctx->Extensions.ARB_texture_env_combine) {
 699          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB,
 700                        unit->Combine.ModeRGB);
 701          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA,
 702                        unit->Combine.ModeA);
 703          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB,
 704                        unit->Combine.SourceRGB[0]);
 705          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB,
 706                        unit->Combine.SourceRGB[1]);
 707          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB,
 708                        unit->Combine.SourceRGB[2]);
 709          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA,
 710                        unit->Combine.SourceA[0]);
 711          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA,
 712                        unit->Combine.SourceA[1]);
 713          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA,
 714                        unit->Combine.SourceA[2]);
 715          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB,
 716                        unit->Combine.OperandRGB[0]);
 717          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB,
 718                        unit->Combine.OperandRGB[1]);
 719          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB,
 720                        unit->Combine.OperandRGB[2]);
 721          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA,
 722                        unit->Combine.OperandA[0]);
 723          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA,
 724                        unit->Combine.OperandA[1]);
 725          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA,
 726                        unit->Combine.OperandA[2]);
 727          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE,
 728                        1 << unit->Combine.ScaleShiftRGB);
 729          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE,
 730                        1 << unit->Combine.ScaleShiftA);
 731       }
 732
 733       /* Restore texture object state */
 734       for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
 735          GLenum target = 0;
 736          const struct gl_texture_object *obj = NULL;
 737          GLfloat bordColor[4];
 738
 739          switch (i) {
 740          case 0:
 741             target = GL_TEXTURE_1D;
 742             obj = &unit->Saved1D;
 743             break;
 744          case 1:
 745             target = GL_TEXTURE_2D;
 746             obj = &unit->Saved2D;
 747             break;
 748          case 2:
 749             target = GL_TEXTURE_3D;
 750             obj = &unit->Saved3D;
 751             break;
 752          case 3:
 753             if (!ctx->Extensions.ARB_texture_cube_map)
 754                continue;
 755             target = GL_TEXTURE_CUBE_MAP_ARB;
 756             obj = &unit->SavedCubeMap;
 757             break;
 758          case 4:
 759             if (!ctx->Extensions.NV_texture_rectangle)
 760                continue;
 761             target = GL_TEXTURE_RECTANGLE_NV;
 762             obj = &unit->SavedRect;
 763             break;
 764          case 5:
 765             if (!ctx->Extensions.MESA_texture_array)
 766                continue;
 767             target = GL_TEXTURE_1D_ARRAY_EXT;
 768             obj = &unit->Saved1DArray;
 769             break;
 770          case 6:
 771             if (!ctx->Extensions.MESA_texture_array)
 772                continue;
 773             target = GL_TEXTURE_2D_ARRAY_EXT;
 774             obj = &unit->Saved2DArray;
 775             break;
 776          default:
 777             ; /* silence warnings */
 778          }
 779
 780          _mesa_BindTexture(target, obj->Name);
 781
 782          bordColor[0] = CHAN_TO_FLOAT(obj->BorderColor[0]);
 783          bordColor[1] = CHAN_TO_FLOAT(obj->BorderColor[1]);
 784          bordColor[2] = CHAN_TO_FLOAT(obj->BorderColor[2]);
 785          bordColor[3] = CHAN_TO_FLOAT(obj->BorderColor[3]);
 786
 787          _mesa_TexParameterf(target, GL_TEXTURE_PRIORITY, obj->Priority);
 788          _mesa_TexParameterfv(target, GL_TEXTURE_BORDER_COLOR, bordColor);
 789          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, obj->WrapS);
 790          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, obj->WrapT);
 791          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, obj->WrapR);
 792          _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, obj->MinFilter);
 793          _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, obj->MagFilter);
 794          _mesa_TexParameterf(target, GL_TEXTURE_MIN_LOD, obj->MinLod);
 795          _mesa_TexParameterf(target, GL_TEXTURE_MAX_LOD, obj->MaxLod);
 796          _mesa_TexParameterf(target, GL_TEXTURE_LOD_BIAS, obj->LodBias);
 797          _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, obj->BaseLevel);
 798          if (target != GL_TEXTURE_RECTANGLE_ARB)
 799             _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, obj->MaxLevel);
 800          if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 801             _mesa_TexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT,
 802                                 obj->MaxAnisotropy);
 803          }
 804          if (ctx->Extensions.SGIX_shadow) {
 805             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_SGIX,
 806                                 obj->CompareFlag);
 807             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_OPERATOR_SGIX,
 808                                 obj->CompareOperator);
 809          }
 810          if (ctx->Extensions.SGIX_shadow_ambient) {
 811             _mesa_TexParameterf(target, GL_SHADOW_AMBIENT_SGIX,
 812                                 obj->ShadowAmbient);
 813          }
 814
 815       }
 816    }
 817    _mesa_ActiveTextureARB(GL_TEXTURE0_ARB
 818                           + texAttrib->CurrentUnit);
 819
 820    /* "un-bump" the texture object reference counts.  We did that so they
 821     * wouldn't inadvertantly get deleted while they were still referenced
 822     * inside the attribute state stack.
 823     */
 824    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 825       ctx->Texture.Unit[u].Current1D->RefCount--;
 826       ctx->Texture.Unit[u].Current2D->RefCount--;
 827       ctx->Texture.Unit[u].Current3D->RefCount--;
 828       ctx->Texture.Unit[u].CurrentCubeMap->RefCount--;
 829       ctx->Texture.Unit[u].CurrentRect->RefCount--;
 830       ctx->Texture.Unit[u].Current1DArray->RefCount--;
 831       ctx->Texture.Unit[u].Current2DArray->RefCount--;
 832    }
 833 }
 834
 835
 836 /*
 837  * This function is kind of long just because we have to call a lot
 838  * of device driver functions to update device driver state.
 839  *
 840  * XXX As it is now, most of the pop-code calls immediate-mode Mesa functions
 841  * in order to restore GL state.  This isn't terribly efficient but it
 842  * ensures that dirty flags and any derived state gets updated correctly.
 843  * We could at least check if the value to restore equals the current value
 844  * and then skip the Mesa call.
 845  */
 846 void GLAPIENTRY
 847 _mesa_PopAttrib(void)
 848 {
 849    struct gl_attrib_node *attr, *next;
 850    GET_CURRENT_CONTEXT(ctx);
 851    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 852
 853    if (ctx->AttribStackDepth == 0) {
 854       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
 855       return;
 856    }
 857
 858    ctx->AttribStackDepth--;
 859    attr = ctx->AttribStack[ctx->AttribStackDepth];
 860
 861    while (attr) {
 862
 863       if (MESA_VERBOSE & VERBOSE_API) {
 864          _mesa_debug(ctx, "glPopAttrib %s\n",
 865                      _mesa_lookup_enum_by_nr(attr->kind));
 866       }
 867
 868       switch (attr->kind) {
 869          case GL_ACCUM_BUFFER_BIT:
 870             {
 871                const struct gl_accum_attrib *accum;
 872                accum = (const struct gl_accum_attrib *) attr->data;
 873                _mesa_ClearAccum(accum->ClearColor[0],
 874                                 accum->ClearColor[1],
 875                                 accum->ClearColor[2],
 876                                 accum->ClearColor[3]);
 877             }
 878             break;
 879          case GL_COLOR_BUFFER_BIT:
 880             {
 881                const struct gl_colorbuffer_attrib *color;
 882                color = (const struct gl_colorbuffer_attrib *) attr->data;
 883                _mesa_ClearIndex((GLfloat) color->ClearIndex);
 884                _mesa_ClearColor(color->ClearColor[0],
 885                                 color->ClearColor[1],
 886                                 color->ClearColor[2],
 887                                 color->ClearColor[3]);
 888                _mesa_IndexMask(color->IndexMask);
 889                _mesa_ColorMask((GLboolean) (color->ColorMask[0] != 0),
 890                                (GLboolean) (color->ColorMask[1] != 0),
 891                                (GLboolean) (color->ColorMask[2] != 0),
 892                                (GLboolean) (color->ColorMask[3] != 0));
 893                {
 894                   /* Need to determine if more than one color output is
 895                    * specified.  If so, call glDrawBuffersARB, else call
 896                    * glDrawBuffer().  This is a subtle, but essential point
 897                    * since GL_FRONT (for example) is illegal for the former
 898                    * function, but legal for the later.
 899                    */
 900                   GLboolean multipleBuffers = GL_FALSE;
 901                   if (ctx->Extensions.ARB_draw_buffers) {
 902                      GLuint i;
 903                      for (i = 1; i < ctx->Const.MaxDrawBuffers; i++) {
 904                         if (color->DrawBuffer[i] != GL_NONE) {
 905                            multipleBuffers = GL_TRUE;
 906                            break;
 907                         }
 908                      }
 909                   }
 910                   /* Call the API_level functions, not _mesa_drawbuffers()
 911                    * since we need to do error checking on the pop'd
 912                    * GL_DRAW_BUFFER.
 913                    * Ex: if GL_FRONT were pushed, but we're popping with a
 914                    * user FBO bound, GL_FRONT will be illegal and we'll need
 915                    * to record that error.  Per OpenGL ARB decision.
 916                    */
 917                   if (multipleBuffers)
 918                      _mesa_DrawBuffersARB(ctx->Const.MaxDrawBuffers,
 919                                           color->DrawBuffer);
 920                   else
 921                      _mesa_DrawBuffer(color->DrawBuffer[0]);
 922                }
 923                _mesa_set_enable(ctx, GL_ALPHA_TEST, color->AlphaEnabled);
 924                _mesa_AlphaFunc(color->AlphaFunc, color->AlphaRef);
 925                _mesa_set_enable(ctx, GL_BLEND, color->BlendEnabled);
 926                _mesa_BlendFuncSeparateEXT(color->BlendSrcRGB,
 927                                           color->BlendDstRGB,
 928                                           color->BlendSrcA,
 929                                           color->BlendDstA);
 930                /* This special case is because glBlendEquationSeparateEXT
 931                 * cannot take GL_LOGIC_OP as a parameter.
 932                 */
 933                if ( color->BlendEquationRGB == color->BlendEquationA ) {
 934                   _mesa_BlendEquation(color->BlendEquationRGB);
 935                }
 936                else {
 937                   _mesa_BlendEquationSeparateEXT(color->BlendEquationRGB,
 938                                                  color->BlendEquationA);
 939                }
 940                _mesa_BlendColor(color->BlendColor[0],
 941                                 color->BlendColor[1],
 942                                 color->BlendColor[2],
 943                                 color->BlendColor[3]);
 944                _mesa_LogicOp(color->LogicOp);
 945                _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP,
 946                                 color->ColorLogicOpEnabled);
 947                _mesa_set_enable(ctx, GL_INDEX_LOGIC_OP,
 948                                 color->IndexLogicOpEnabled);
 949                _mesa_set_enable(ctx, GL_DITHER, color->DitherFlag);
 950             }
 951             break;
 952          case GL_CURRENT_BIT:
 953             FLUSH_CURRENT( ctx, 0 );
 954             MEMCPY( &ctx->Current, attr->data,
 955                     sizeof(struct gl_current_attrib) );
 956             break;
 957          case GL_DEPTH_BUFFER_BIT:
 958             {
 959                const struct gl_depthbuffer_attrib *depth;
 960                depth = (const struct gl_depthbuffer_attrib *) attr->data;
 961                _mesa_DepthFunc(depth->Func);
 962                _mesa_ClearDepth(depth->Clear);
 963                _mesa_set_enable(ctx, GL_DEPTH_TEST, depth->Test);
 964                _mesa_DepthMask(depth->Mask);
 965             }
 966             break;
 967          case GL_ENABLE_BIT:
 968             {
 969                const struct gl_enable_attrib *enable;
 970                enable = (const struct gl_enable_attrib *) attr->data;
 971                pop_enable_group(ctx, enable);
 972                ctx->NewState |= _NEW_ALL;
 973             }
 974             break;
 975          case GL_EVAL_BIT:
 976             MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
 977             ctx->NewState |= _NEW_EVAL;
 978             break;
 979          case GL_FOG_BIT:
 980             {
 981                const struct gl_fog_attrib *fog;
 982                fog = (const struct gl_fog_attrib *) attr->data;
 983                _mesa_set_enable(ctx, GL_FOG, fog->Enabled);
 984                _mesa_Fogfv(GL_FOG_COLOR, fog->Color);
 985                _mesa_Fogf(GL_FOG_DENSITY, fog->Density);
 986                _mesa_Fogf(GL_FOG_START, fog->Start);
 987                _mesa_Fogf(GL_FOG_END, fog->End);
 988                _mesa_Fogf(GL_FOG_INDEX, fog->Index);
 989                _mesa_Fogi(GL_FOG_MODE, fog->Mode);
 990             }
 991             break;
 992          case GL_HINT_BIT:
 993             {
 994                const struct gl_hint_attrib *hint;
 995                hint = (const struct gl_hint_attrib *) attr->data;
 996                _mesa_Hint(GL_PERSPECTIVE_CORRECTION_HINT,
 997                           hint->PerspectiveCorrection );
 998                _mesa_Hint(GL_POINT_SMOOTH_HINT, hint->PointSmooth);
 999                _mesa_Hint(GL_LINE_SMOOTH_HINT, hint->LineSmooth);
1000                _mesa_Hint(GL_POLYGON_SMOOTH_HINT, hint->PolygonSmooth);
1001                _mesa_Hint(GL_FOG_HINT, hint->Fog);
1002                _mesa_Hint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT,
1003                           hint->ClipVolumeClipping);
1004                if (ctx->Extensions.ARB_texture_compression)
1005                   _mesa_Hint(GL_TEXTURE_COMPRESSION_HINT_ARB,
1006                              hint->TextureCompression);
1007             }
1008             break;
1009          case GL_LIGHTING_BIT:
1010             {
1011                GLuint i;
1012                const struct gl_light_attrib *light;
1013                light = (const struct gl_light_attrib *) attr->data;
1014                /* lighting enable */
1015                _mesa_set_enable(ctx, GL_LIGHTING, light->Enabled);
1016                /* per-light state */
1017                if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top))
1018                   _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
1019
1020                for (i = 0; i < ctx->Const.MaxLights; i++) {
1021                   const struct gl_light *l = &light->Light[i];
1022                   _mesa_set_enable(ctx, GL_LIGHT0 + i, l->Enabled);
1023                   _mesa_light(ctx, i, GL_AMBIENT, l->Ambient);
1024                   _mesa_light(ctx, i, GL_DIFFUSE, l->Diffuse);
1025                   _mesa_light(ctx, i, GL_SPECULAR, l->Specular );
1026                   _mesa_light(ctx, i, GL_POSITION, l->EyePosition);
1027                   _mesa_light(ctx, i, GL_SPOT_DIRECTION, l->EyeDirection);
1028                   _mesa_light(ctx, i, GL_SPOT_EXPONENT, &l->SpotExponent);
1029                   _mesa_light(ctx, i, GL_SPOT_CUTOFF, &l->SpotCutoff);
1030                   _mesa_light(ctx, i, GL_CONSTANT_ATTENUATION,
1031                               &l->ConstantAttenuation);
1032                   _mesa_light(ctx, i, GL_LINEAR_ATTENUATION,
1033                               &l->LinearAttenuation);
1034                   _mesa_light(ctx, i, GL_QUADRATIC_ATTENUATION,
1035                               &l->QuadraticAttenuation);
1036                }
1037                /* light model */
1038                _mesa_LightModelfv(GL_LIGHT_MODEL_AMBIENT,
1039                                   light->Model.Ambient);
1040                _mesa_LightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER,
1041                                  (GLfloat) light->Model.LocalViewer);
1042                _mesa_LightModelf(GL_LIGHT_MODEL_TWO_SIDE,
1043                                  (GLfloat) light->Model.TwoSide);
1044                _mesa_LightModelf(GL_LIGHT_MODEL_COLOR_CONTROL,
1045                                  (GLfloat) light->Model.ColorControl);
1046                /* shade model */
1047                _mesa_ShadeModel(light->ShadeModel);
1048                /* color material */
1049                _mesa_ColorMaterial(light->ColorMaterialFace,
1050                                    light->ColorMaterialMode);
1051                _mesa_set_enable(ctx, GL_COLOR_MATERIAL,
1052                                 light->ColorMaterialEnabled);
1053                /* materials */
1054                MEMCPY(&ctx->Light.Material, &light->Material,
1055                       sizeof(struct gl_material));
1056             }
1057             break;
1058          case GL_LINE_BIT:
1059             {
1060                const struct gl_line_attrib *line;
1061                line = (const struct gl_line_attrib *) attr->data;
1062                _mesa_set_enable(ctx, GL_LINE_SMOOTH, line->SmoothFlag);
1063                _mesa_set_enable(ctx, GL_LINE_STIPPLE, line->StippleFlag);
1064                _mesa_LineStipple(line->StippleFactor, line->StipplePattern);
1065                _mesa_LineWidth(line->Width);
1066             }
1067             break;
1068          case GL_LIST_BIT:
1069             MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
1070             break;
1071          case GL_PIXEL_MODE_BIT:
1072             MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
1073             /* XXX what other pixel state needs to be set by function calls? */
1074             _mesa_ReadBuffer(ctx->Pixel.ReadBuffer);
1075             ctx->NewState |= _NEW_PIXEL;
1076             break;
1077          case GL_POINT_BIT:
1078             {
1079                const struct gl_point_attrib *point;
1080                point = (const struct gl_point_attrib *) attr->data;
1081                _mesa_PointSize(point->Size);
1082                _mesa_set_enable(ctx, GL_POINT_SMOOTH, point->SmoothFlag);
1083                if (ctx->Extensions.EXT_point_parameters) {
1084                   _mesa_PointParameterfv(GL_DISTANCE_ATTENUATION_EXT,
1085                                          point->Params);
1086                   _mesa_PointParameterf(GL_POINT_SIZE_MIN_EXT,
1087                                         point->MinSize);
1088                   _mesa_PointParameterf(GL_POINT_SIZE_MAX_EXT,
1089                                         point->MaxSize);
1090                   _mesa_PointParameterf(GL_POINT_FADE_THRESHOLD_SIZE_EXT,
1091                                         point->Threshold);
1092                }
1093                if (ctx->Extensions.NV_point_sprite
1094                    || ctx->Extensions.ARB_point_sprite) {
1095                   GLuint u;
1096                   for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
1097                      _mesa_TexEnvi(GL_POINT_SPRITE_NV, GL_COORD_REPLACE_NV,
1098                                    (GLint) point->CoordReplace[u]);
1099                   }
1100                   _mesa_set_enable(ctx, GL_POINT_SPRITE_NV,point->PointSprite);
1101                   _mesa_PointParameteri(GL_POINT_SPRITE_R_MODE_NV,
1102                                         ctx->Point.SpriteRMode);
1103                   _mesa_PointParameterf(GL_POINT_SPRITE_COORD_ORIGIN,
1104                                         (GLfloat)ctx->Point.SpriteOrigin);
1105                }
1106             }
1107             break;
1108          case GL_POLYGON_BIT:
1109             {
1110                const struct gl_polygon_attrib *polygon;
1111                polygon = (const struct gl_polygon_attrib *) attr->data;
1112                _mesa_CullFace(polygon->CullFaceMode);
1113                _mesa_FrontFace(polygon->FrontFace);
1114                _mesa_PolygonMode(GL_FRONT, polygon->FrontMode);
1115                _mesa_PolygonMode(GL_BACK, polygon->BackMode);
1116                _mesa_PolygonOffset(polygon->OffsetFactor,
1117                                    polygon->OffsetUnits);
1118                _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, polygon->SmoothFlag);
1119                _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, polygon->StippleFlag);
1120                _mesa_set_enable(ctx, GL_CULL_FACE, polygon->CullFlag);
1121                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_POINT,
1122                                 polygon->OffsetPoint);
1123                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_LINE,
1124                                 polygon->OffsetLine);
1125                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL,
1126                                 polygon->OffsetFill);
1127             }
1128             break;
1129          case GL_POLYGON_STIPPLE_BIT:
1130             MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
1131             ctx->NewState |= _NEW_POLYGONSTIPPLE;
1132             if (ctx->Driver.PolygonStipple)
1133                ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data );
1134             break;
1135          case GL_SCISSOR_BIT:
1136             {
1137                const struct gl_scissor_attrib *scissor;
1138                scissor = (const struct gl_scissor_attrib *) attr->data;
1139                _mesa_Scissor(scissor->X, scissor->Y,
1140                              scissor->Width, scissor->Height);
1141                _mesa_set_enable(ctx, GL_SCISSOR_TEST, scissor->Enabled);
1142             }
1143             break;
1144          case GL_STENCIL_BUFFER_BIT:
1145             {
1146                const struct gl_stencil_attrib *stencil;
1147                stencil = (const struct gl_stencil_attrib *) attr->data;
1148                _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);
1149                _mesa_ClearStencil(stencil->Clear);
1150                if (ctx->Extensions.EXT_stencil_two_side) {
1151                   _mesa_set_enable(ctx, GL_STENCIL_TEST_TWO_SIDE_EXT,
1152                                    stencil->TestTwoSide);
1153                   _mesa_ActiveStencilFaceEXT(stencil->ActiveFace
1154                                              ? GL_BACK : GL_FRONT);
1155                }
1156                /* front state */
1157                _mesa_StencilFuncSeparate(GL_FRONT,
1158                                          stencil->Function[0],
1159                                          stencil->Ref[0],
1160                                          stencil->ValueMask[0]);
1161                _mesa_StencilMaskSeparate(GL_FRONT, stencil->WriteMask[0]);
1162                _mesa_StencilOpSeparate(GL_FRONT, stencil->FailFunc[0],
1163                                        stencil->ZFailFunc[0],
1164                                        stencil->ZPassFunc[0]);
1165                /* back state */
1166                _mesa_StencilFuncSeparate(GL_BACK,
1167                                          stencil->Function[1],
1168                                          stencil->Ref[1],
1169                                          stencil->ValueMask[1]);
1170                _mesa_StencilMaskSeparate(GL_BACK, stencil->WriteMask[1]);
1171                _mesa_StencilOpSeparate(GL_BACK, stencil->FailFunc[1],
1172                                        stencil->ZFailFunc[1],
1173                                        stencil->ZPassFunc[1]);
1174             }
1175             break;
1176          case GL_TRANSFORM_BIT:
1177             {
1178                GLuint i;
1179                const struct gl_transform_attrib *xform;
1180                xform = (const struct gl_transform_attrib *) attr->data;
1181                _mesa_MatrixMode(xform->MatrixMode);
1182                if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top))
1183                   _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
1184
1185                /* restore clip planes */
1186                for (i = 0; i < MAX_CLIP_PLANES; i++) {
1187                   const GLuint mask = 1 << 1;
1188                   const GLfloat *eyePlane = xform->EyeUserPlane[i];
1189                   COPY_4V(ctx->Transform.EyeUserPlane[i], eyePlane);
1190                   if (xform->ClipPlanesEnabled & mask) {
1191                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE);
1192                   }
1193                   else {
1194                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_FALSE);
1195                   }
1196                   if (ctx->Driver.ClipPlane)
1197                      ctx->Driver.ClipPlane( ctx, GL_CLIP_PLANE0 + i, eyePlane );
1198                }
1199
1200                /* normalize/rescale */
1201                if (xform->Normalize != ctx->Transform.Normalize)
1202                   _mesa_set_enable(ctx, GL_NORMALIZE,ctx->Transform.Normalize);
1203                if (xform->RescaleNormals != ctx->Transform.RescaleNormals)
1204                   _mesa_set_enable(ctx, GL_RESCALE_NORMAL_EXT,
1205                                    ctx->Transform.RescaleNormals);
1206             }
1207             break;
1208          case GL_TEXTURE_BIT:
1209             /* Take care of texture object reference counters */
1210             {
1211                const struct gl_texture_attrib *texture;
1212                texture = (const struct gl_texture_attrib *) attr->data;
1213                pop_texture_group(ctx, texture);
1214                ctx->NewState |= _NEW_TEXTURE;
1215             }
1216             break;
1217          case GL_VIEWPORT_BIT:
1218             {
1219                const struct gl_viewport_attrib *vp;
1220                vp = (const struct gl_viewport_attrib *) attr->data;
1221                _mesa_Viewport(vp->X, vp->Y, vp->Width, vp->Height);
1222                _mesa_DepthRange(vp->Near, vp->Far);
1223             }
1224             break;
1225          case GL_MULTISAMPLE_BIT_ARB:
1226             {
1227                const struct gl_multisample_attrib *ms;
1228                ms = (const struct gl_multisample_attrib *) attr->data;
1229                _mesa_SampleCoverageARB(ms->SampleCoverageValue,
1230                                        ms->SampleCoverageInvert);
1231             }
1232             break;
1233
1234          default:
1235             _mesa_problem( ctx, "Bad attrib flag in PopAttrib");
1236             break;
1237       }
1238
1239       next = attr->next;
1240       FREE( attr->data );
1241       FREE( attr );
1242       attr = next;
1243    }
1244 }
1245
1246
1247 /**
1248  * Helper for incrementing/decrementing vertex buffer object reference
1249  * counts when pushing/popping the GL_CLIENT_VERTEX_ARRAY_BIT attribute group.
1250  */
1251 static void
1252 adjust_buffer_object_ref_counts(struct gl_array_attrib *array, GLint step)
1253 {
1254    GLuint i;
1255    array->ArrayObj->Vertex.BufferObj->RefCount += step;
1256    array->ArrayObj->Normal.BufferObj->RefCount += step;
1257    array->ArrayObj->Color.BufferObj->RefCount += step;
1258    array->ArrayObj->SecondaryColor.BufferObj->RefCount += step;
1259    array->ArrayObj->FogCoord.BufferObj->RefCount += step;
1260    array->ArrayObj->Index.BufferObj->RefCount += step;
1261    array->ArrayObj->EdgeFlag.BufferObj->RefCount += step;
1262    for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++)
1263       array->ArrayObj->TexCoord[i].BufferObj->RefCount += step;
1264    for (i = 0; i < VERT_ATTRIB_MAX; i++)
1265       array->ArrayObj->VertexAttrib[i].BufferObj->RefCount += step;
1266
1267    array->ArrayBufferObj->RefCount += step;
1268    array->ElementArrayBufferObj->RefCount += step;
1269 }
1270
1271
1272 /**
1273  * Copy gl_pixelstore_attrib from src to dst, updating buffer
1274  * object refcounts.
1275  */
1276 static void
1277 copy_pixelstore(GLcontext *ctx,
1278                 struct gl_pixelstore_attrib *dst,
1279                 const struct gl_pixelstore_attrib *src)
1280 {
1281    dst->Alignment = src->Alignment;
1282    dst->RowLength = src->RowLength;
1283    dst->SkipPixels = src->SkipPixels;
1284    dst->SkipRows = src->SkipRows;
1285    dst->ImageHeight = src->ImageHeight;
1286    dst->SkipImages = src->SkipImages;
1287    dst->SwapBytes = src->SwapBytes;
1288    dst->LsbFirst = src->LsbFirst;
1289    dst->ClientStorage = src->ClientStorage;
1290    dst->Invert = src->Invert;
1291    _mesa_reference_buffer_object(ctx, &dst->BufferObj, src->BufferObj);
1292 }
1293
1294
1295 #define GL_CLIENT_PACK_BIT (1<<20)
1296 #define GL_CLIENT_UNPACK_BIT (1<<21)
1297
1298
1299 void GLAPIENTRY
1300 _mesa_PushClientAttrib(GLbitfield mask)
1301 {
1302    struct gl_attrib_node *newnode;
1303    struct gl_attrib_node *head;
1304
1305    GET_CURRENT_CONTEXT(ctx);
1306    ASSERT_OUTSIDE_BEGIN_END(ctx);
1307
1308    if (ctx->ClientAttribStackDepth >= MAX_CLIENT_ATTRIB_STACK_DEPTH) {
1309       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
1310       return;
1311    }
1312
1313    /* Build linked list of attribute nodes which save all attribute
1314     * groups specified by the mask.
1315     */
1316    head = NULL;
1317
1318    if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
1319       struct gl_pixelstore_attrib *attr;
1320       /* packing attribs */
1321       attr = CALLOC_STRUCT( gl_pixelstore_attrib );
1322       copy_pixelstore(ctx, attr, &ctx->Pack);
1323       newnode = new_attrib_node( GL_CLIENT_PACK_BIT );
1324       newnode->data = attr;
1325       newnode->next = head;
1326       head = newnode;
1327       /* unpacking attribs */
1328       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1329       copy_pixelstore(ctx, attr, &ctx->Unpack);
1330       newnode = new_attrib_node( GL_CLIENT_UNPACK_BIT );
1331       newnode->data = attr;
1332       newnode->next = head;
1333       head = newnode;
1334    }
1335
1336    if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
1337       struct gl_array_attrib *attr;
1338       struct gl_array_object *obj;
1339
1340       attr = MALLOC_STRUCT( gl_array_attrib );
1341       obj = MALLOC_STRUCT( gl_array_object );
1342
1343 #if FEATURE_ARB_vertex_buffer_object
1344       /* increment ref counts since we're copying pointers to these objects */
1345       ctx->Array.ArrayBufferObj->RefCount++;
1346       ctx->Array.ElementArrayBufferObj->RefCount++;
1347 #endif
1348
1349       MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
1350       MEMCPY( obj, ctx->Array.ArrayObj, sizeof(struct gl_array_object) );
1351
1352       attr->ArrayObj = obj;
1353
1354       newnode = new_attrib_node( GL_CLIENT_VERTEX_ARRAY_BIT );
1355       newnode->data = attr;
1356       newnode->next = head;
1357       head = newnode;
1358       /* bump reference counts on buffer objects */
1359       adjust_buffer_object_ref_counts(&ctx->Array, 1);
1360    }
1361
1362    ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
1363    ctx->ClientAttribStackDepth++;
1364 }
1365
1366
1367
1368
1369 void GLAPIENTRY
1370 _mesa_PopClientAttrib(void)
1371 {
1372    struct gl_attrib_node *node, *next;
1373
1374    GET_CURRENT_CONTEXT(ctx);
1375    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1376
1377    if (ctx->ClientAttribStackDepth == 0) {
1378       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
1379       return;
1380    }
1381
1382    ctx->ClientAttribStackDepth--;
1383    node = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
1384
1385    while (node) {
1386       switch (node->kind) {
1387          case GL_CLIENT_PACK_BIT:
1388             {
1389                struct gl_pixelstore_attrib *store =
1390                   (struct gl_pixelstore_attrib *) node->data;
1391                copy_pixelstore(ctx, &ctx->Pack, store);
1392                _mesa_reference_buffer_object(ctx, &store->BufferObj, NULL);
1393             }
1394             ctx->NewState |= _NEW_PACKUNPACK;
1395             break;
1396          case GL_CLIENT_UNPACK_BIT:
1397             {
1398                struct gl_pixelstore_attrib *store =
1399                   (struct gl_pixelstore_attrib *) node->data;
1400                copy_pixelstore(ctx, &ctx->Unpack, store);
1401                _mesa_reference_buffer_object(ctx, &store->BufferObj, NULL);
1402             }
1403             ctx->NewState |= _NEW_PACKUNPACK;
1404             break;
1405          case GL_CLIENT_VERTEX_ARRAY_BIT: {
1406             struct gl_array_attrib * data =
1407               (struct gl_array_attrib *) node->data;
1408
1409             adjust_buffer_object_ref_counts(&ctx->Array, -1);
1410
1411             ctx->Array.ActiveTexture = data->ActiveTexture;
1412             ctx->Array.LockFirst = data->LockFirst;
1413             ctx->Array.LockCount = data->LockCount;
1414
1415             _mesa_BindVertexArrayAPPLE( data->ArrayObj->Name );
1416
1417 #if FEATURE_ARB_vertex_buffer_object
1418             _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB,
1419                                 data->ArrayBufferObj->Name);
1420             _mesa_BindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB,
1421                                 data->ElementArrayBufferObj->Name);
1422 #endif
1423
1424             MEMCPY( ctx->Array.ArrayObj, data->ArrayObj,
1425                     sizeof( struct gl_array_object ) );
1426
1427             FREE( data->ArrayObj );
1428
1429             /* FIXME: Should some bits in ctx->Array->NewState also be set
1430              * FIXME: here?  It seems like it should be set to inclusive-or
1431              * FIXME: of the old ArrayObj->_Enabled and the new _Enabled.
1432              */
1433
1434             ctx->NewState |= _NEW_ARRAY;
1435             break;
1436          }
1437          default:
1438             _mesa_problem( ctx, "Bad attrib flag in PopClientAttrib");
1439             break;
1440       }
1441
1442       next = node->next;
1443       FREE( node->data );
1444       FREE( node );
1445       node = next;
1446    }
1447 }
1448
1449
1450 void _mesa_init_attrib( GLcontext *ctx )
1451 {
1452    /* Renderer and client attribute stacks */
1453    ctx->AttribStackDepth = 0;
1454    ctx->ClientAttribStackDepth = 0;
1455 }