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