src/mesa/main/attrib.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.5.3
   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 "colormac.h"
  34 #include "colortab.h"
  35 #include "context.h"
  36 #include "depth.h"
  37 #include "enable.h"
  38 #include "enums.h"
  39 #include "fog.h"
  40 #include "hint.h"
  41 #include "light.h"
  42 #include "lines.h"
  43 #include "matrix.h"
  44 #include "points.h"
  45 #include "polygon.h"
  46 #include "simple_list.h"
  47 #include "stencil.h"
  48 #include "texobj.h"
  49 #include "texstate.h"
  50 #include "mtypes.h"
  51 #include "math/m_xform.h"
  52
  53
  54 /**
  55  * Allocate a new attribute state node.  These nodes have a
  56  * "kind" value and a pointer to a struct of state data.
  57  */
  58 static struct gl_attrib_node *
  59 new_attrib_node( GLbitfield kind )
  60 {
  61    struct gl_attrib_node *an = MALLOC_STRUCT(gl_attrib_node);
  62    if (an) {
  63       an->kind = kind;
  64    }
  65    return an;
  66 }
  67
  68
  69 void GLAPIENTRY
  70 _mesa_PushAttrib(GLbitfield mask)
  71 {
  72    struct gl_attrib_node *newnode;
  73    struct gl_attrib_node *head;
  74
  75    GET_CURRENT_CONTEXT(ctx);
  76    ASSERT_OUTSIDE_BEGIN_END(ctx);
  77
  78    if (MESA_VERBOSE & VERBOSE_API)
  79       _mesa_debug(ctx, "glPushAttrib %x\n", (int) mask);
  80
  81    if (ctx->AttribStackDepth >= MAX_ATTRIB_STACK_DEPTH) {
  82       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
  83       return;
  84    }
  85
  86    /* Build linked list of attribute nodes which save all attribute */
  87    /* groups specified by the mask. */
  88    head = NULL;
  89
  90    if (mask & GL_ACCUM_BUFFER_BIT) {
  91       struct gl_accum_attrib *attr;
  92       attr = MALLOC_STRUCT( gl_accum_attrib );
  93       MEMCPY( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );
  94       newnode = new_attrib_node( GL_ACCUM_BUFFER_BIT );
  95       newnode->data = attr;
  96       newnode->next = head;
  97       head = newnode;
  98    }
  99
 100    if (mask & GL_COLOR_BUFFER_BIT) {
 101       struct gl_colorbuffer_attrib *attr;
 102       attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
 103       MEMCPY( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
 104       newnode = new_attrib_node( GL_COLOR_BUFFER_BIT );
 105       newnode->data = attr;
 106       newnode->next = head;
 107       head = newnode;
 108    }
 109
 110    if (mask & GL_CURRENT_BIT) {
 111       struct gl_current_attrib *attr;
 112       FLUSH_CURRENT( ctx, 0 );
 113       attr = MALLOC_STRUCT( gl_current_attrib );
 114       MEMCPY( attr, &ctx->Current, sizeof(struct gl_current_attrib) );
 115       newnode = new_attrib_node( GL_CURRENT_BIT );
 116       newnode->data = attr;
 117       newnode->next = head;
 118       head = newnode;
 119    }
 120
 121    if (mask & GL_DEPTH_BUFFER_BIT) {
 122       struct gl_depthbuffer_attrib *attr;
 123       attr = MALLOC_STRUCT( gl_depthbuffer_attrib );
 124       MEMCPY( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );
 125       newnode = new_attrib_node( GL_DEPTH_BUFFER_BIT );
 126       newnode->data = attr;
 127       newnode->next = head;
 128       head = newnode;
 129    }
 130
 131    if (mask & GL_ENABLE_BIT) {
 132       struct gl_enable_attrib *attr;
 133       GLuint i;
 134       attr = MALLOC_STRUCT( gl_enable_attrib );
 135       /* Copy enable flags from all other attributes into the enable struct. */
 136       attr->AlphaTest = ctx->Color.AlphaEnabled;
 137       attr->AutoNormal = ctx->Eval.AutoNormal;
 138       attr->Blend = ctx->Color.BlendEnabled;
 139       attr->ClipPlanes = ctx->Transform.ClipPlanesEnabled;
 140       attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;
 141       for (i = 0; i < COLORTABLE_MAX; i++) {
 142          attr->ColorTable[i] = ctx->Pixel.ColorTableEnabled[i];
 143       }
 144       attr->Convolution1D = ctx->Pixel.Convolution1DEnabled;
 145       attr->Convolution2D = ctx->Pixel.Convolution2DEnabled;
 146       attr->Separable2D = ctx->Pixel.Separable2DEnabled;
 147       attr->CullFace = ctx->Polygon.CullFlag;
 148       attr->DepthTest = ctx->Depth.Test;
 149       attr->Dither = ctx->Color.DitherFlag;
 150       attr->Fog = ctx->Fog.Enabled;
 151       for (i = 0; i < ctx->Const.MaxLights; i++) {
 152          attr->Light[i] = ctx->Light.Light[i].Enabled;
 153       }
 154       attr->Lighting = ctx->Light.Enabled;
 155       attr->LineSmooth = ctx->Line.SmoothFlag;
 156       attr->LineStipple = ctx->Line.StippleFlag;
 157       attr->Histogram = ctx->Pixel.HistogramEnabled;
 158       attr->MinMax = ctx->Pixel.MinMaxEnabled;
 159       attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
 160       attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
 161       attr->Map1Color4 = ctx->Eval.Map1Color4;
 162       attr->Map1Index = ctx->Eval.Map1Index;
 163       attr->Map1Normal = ctx->Eval.Map1Normal;
 164       attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
 165       attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
 166       attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
 167       attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
 168       attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
 169       attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
 170       MEMCPY(attr->Map1Attrib, ctx->Eval.Map1Attrib, sizeof(ctx->Eval.Map1Attrib));
 171       attr->Map2Color4 = ctx->Eval.Map2Color4;
 172       attr->Map2Index = ctx->Eval.Map2Index;
 173       attr->Map2Normal = ctx->Eval.Map2Normal;
 174       attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
 175       attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
 176       attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
 177       attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
 178       attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
 179       attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
 180       MEMCPY(attr->Map2Attrib, ctx->Eval.Map2Attrib, sizeof(ctx->Eval.Map2Attrib));
 181       attr->Normalize = ctx->Transform.Normalize;
 182       attr->RasterPositionUnclipped = ctx->Transform.RasterPositionUnclipped;
 183       attr->PointSmooth = ctx->Point.SmoothFlag;
 184       attr->PointSprite = ctx->Point.PointSprite;
 185       attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;
 186       attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;
 187       attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;
 188       attr->PolygonSmooth = ctx->Polygon.SmoothFlag;
 189       attr->PolygonStipple = ctx->Polygon.StippleFlag;
 190       attr->RescaleNormals = ctx->Transform.RescaleNormals;
 191       attr->Scissor = ctx->Scissor.Enabled;
 192       attr->Stencil = ctx->Stencil.Enabled;
 193       attr->StencilTwoSide = ctx->Stencil.TestTwoSide;
 194       attr->MultisampleEnabled = ctx->Multisample.Enabled;
 195       attr->SampleAlphaToCoverage = ctx->Multisample.SampleAlphaToCoverage;
 196       attr->SampleAlphaToOne = ctx->Multisample.SampleAlphaToOne;
 197       attr->SampleCoverage = ctx->Multisample.SampleCoverage;
 198       attr->SampleCoverageInvert = ctx->Multisample.SampleCoverageInvert;
 199       for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 200          attr->Texture[i] = ctx->Texture.Unit[i].Enabled;
 201          attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
 202          attr->TextureColorTable[i] = ctx->Texture.Unit[i].ColorTableEnabled;
 203       }
 204       /* GL_NV_vertex_program */
 205       attr->VertexProgram = ctx->VertexProgram.Enabled;
 206       attr->VertexProgramPointSize = ctx->VertexProgram.PointSizeEnabled;
 207       attr->VertexProgramTwoSide = ctx->VertexProgram.TwoSideEnabled;
 208       newnode = new_attrib_node( GL_ENABLE_BIT );
 209       newnode->data = attr;
 210       newnode->next = head;
 211       head = newnode;
 212    }
 213
 214    if (mask & GL_EVAL_BIT) {
 215       struct gl_eval_attrib *attr;
 216       attr = MALLOC_STRUCT( gl_eval_attrib );
 217       MEMCPY( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
 218       newnode = new_attrib_node( GL_EVAL_BIT );
 219       newnode->data = attr;
 220       newnode->next = head;
 221       head = newnode;
 222    }
 223
 224    if (mask & GL_FOG_BIT) {
 225       struct gl_fog_attrib *attr;
 226       attr = MALLOC_STRUCT( gl_fog_attrib );
 227       MEMCPY( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
 228       newnode = new_attrib_node( GL_FOG_BIT );
 229       newnode->data = attr;
 230       newnode->next = head;
 231       head = newnode;
 232    }
 233
 234    if (mask & GL_HINT_BIT) {
 235       struct gl_hint_attrib *attr;
 236       attr = MALLOC_STRUCT( gl_hint_attrib );
 237       MEMCPY( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
 238       newnode = new_attrib_node( GL_HINT_BIT );
 239       newnode->data = attr;
 240       newnode->next = head;
 241       head = newnode;
 242    }
 243
 244    if (mask & GL_LIGHTING_BIT) {
 245       struct gl_light_attrib *attr;
 246       FLUSH_CURRENT(ctx, 0);    /* flush material changes */
 247       attr = MALLOC_STRUCT( gl_light_attrib );
 248       MEMCPY( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
 249       newnode = new_attrib_node( GL_LIGHTING_BIT );
 250       newnode->data = attr;
 251       newnode->next = head;
 252       head = newnode;
 253    }
 254
 255    if (mask & GL_LINE_BIT) {
 256       struct gl_line_attrib *attr;
 257       attr = MALLOC_STRUCT( gl_line_attrib );
 258       MEMCPY( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
 259       newnode = new_attrib_node( GL_LINE_BIT );
 260       newnode->data = attr;
 261       newnode->next = head;
 262       head = newnode;
 263    }
 264
 265    if (mask & GL_LIST_BIT) {
 266       struct gl_list_attrib *attr;
 267       attr = MALLOC_STRUCT( gl_list_attrib );
 268       MEMCPY( attr, &ctx->List, sizeof(struct gl_list_attrib) );
 269       newnode = new_attrib_node( GL_LIST_BIT );
 270       newnode->data = attr;
 271       newnode->next = head;
 272       head = newnode;
 273    }
 274
 275    if (mask & GL_PIXEL_MODE_BIT) {
 276       struct gl_pixel_attrib *attr;
 277       attr = MALLOC_STRUCT( gl_pixel_attrib );
 278       MEMCPY( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
 279       /* push the Read FBO's ReadBuffer state, not ctx->Pixel.ReadBuffer */
 280       attr->ReadBuffer = ctx->ReadBuffer->ColorReadBuffer;
 281       newnode = new_attrib_node( GL_PIXEL_MODE_BIT );
 282       newnode->data = attr;
 283       newnode->next = head;
 284       head = newnode;
 285    }
 286
 287    if (mask & GL_POINT_BIT) {
 288       struct gl_point_attrib *attr;
 289       attr = MALLOC_STRUCT( gl_point_attrib );
 290       MEMCPY( attr, &ctx->Point, sizeof(struct gl_point_attrib) );
 291       newnode = new_attrib_node( GL_POINT_BIT );
 292       newnode->data = attr;
 293       newnode->next = head;
 294       head = newnode;
 295    }
 296
 297    if (mask & GL_POLYGON_BIT) {
 298       struct gl_polygon_attrib *attr;
 299       attr = MALLOC_STRUCT( gl_polygon_attrib );
 300       MEMCPY( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );
 301       newnode = new_attrib_node( GL_POLYGON_BIT );
 302       newnode->data = attr;
 303       newnode->next = head;
 304       head = newnode;
 305    }
 306
 307    if (mask & GL_POLYGON_STIPPLE_BIT) {
 308       GLuint *stipple;
 309       stipple = (GLuint *) MALLOC( 32*sizeof(GLuint) );
 310       MEMCPY( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );
 311       newnode = new_attrib_node( GL_POLYGON_STIPPLE_BIT );
 312       newnode->data = stipple;
 313       newnode->next = head;
 314       head = newnode;
 315    }
 316
 317    if (mask & GL_SCISSOR_BIT) {
 318       struct gl_scissor_attrib *attr;
 319       attr = MALLOC_STRUCT( gl_scissor_attrib );
 320       MEMCPY( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );
 321       newnode = new_attrib_node( GL_SCISSOR_BIT );
 322       newnode->data = attr;
 323       newnode->next = head;
 324       head = newnode;
 325    }
 326
 327    if (mask & GL_STENCIL_BUFFER_BIT) {
 328       struct gl_stencil_attrib *attr;
 329       attr = MALLOC_STRUCT( gl_stencil_attrib );
 330       MEMCPY( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );
 331       newnode = new_attrib_node( GL_STENCIL_BUFFER_BIT );
 332       newnode->data = attr;
 333       newnode->next = head;
 334       head = newnode;
 335    }
 336
 337    if (mask & GL_TEXTURE_BIT) {
 338       struct gl_texture_attrib *attr;
 339       GLuint u;
 340
 341       _mesa_lock_context_textures(ctx);
 342       /* Bump the texture object reference counts so that they don't
 343        * inadvertantly get deleted.
 344        */
 345       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 346          ctx->Texture.Unit[u].Current1D->RefCount++;
 347          ctx->Texture.Unit[u].Current2D->RefCount++;
 348          ctx->Texture.Unit[u].Current3D->RefCount++;
 349          ctx->Texture.Unit[u].CurrentCubeMap->RefCount++;
 350          ctx->Texture.Unit[u].CurrentRect->RefCount++;
 351       }
 352       attr = MALLOC_STRUCT( gl_texture_attrib );
 353       MEMCPY( attr, &ctx->Texture, sizeof(struct gl_texture_attrib) );
 354       /* copy state of the currently bound texture objects */
 355       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 356          _mesa_copy_texture_object(&attr->Unit[u].Saved1D,
 357                                    attr->Unit[u].Current1D);
 358          _mesa_copy_texture_object(&attr->Unit[u].Saved2D,
 359                                    attr->Unit[u].Current2D);
 360          _mesa_copy_texture_object(&attr->Unit[u].Saved3D,
 361                                    attr->Unit[u].Current3D);
 362          _mesa_copy_texture_object(&attr->Unit[u].SavedCubeMap,
 363                                    attr->Unit[u].CurrentCubeMap);
 364          _mesa_copy_texture_object(&attr->Unit[u].SavedRect,
 365                                    attr->Unit[u].CurrentRect);
 366          _mesa_copy_texture_object(&attr->Unit[u].Saved1DArray,
 367                                    attr->Unit[u].Current1DArray);
 368          _mesa_copy_texture_object(&attr->Unit[u].Saved2DArray,
 369                                    attr->Unit[u].Current2DArray);
 370       }
 371
 372       _mesa_unlock_context_textures(ctx);
 373
 374       newnode = new_attrib_node( GL_TEXTURE_BIT );
 375       newnode->data = attr;
 376       newnode->next = head;
 377       head = newnode;
 378    }
 379
 380    if (mask & GL_TRANSFORM_BIT) {
 381       struct gl_transform_attrib *attr;
 382       attr = MALLOC_STRUCT( gl_transform_attrib );
 383       MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
 384       newnode = new_attrib_node( GL_TRANSFORM_BIT );
 385       newnode->data = attr;
 386       newnode->next = head;
 387       head = newnode;
 388    }
 389
 390    if (mask & GL_VIEWPORT_BIT) {
 391       struct gl_viewport_attrib *attr;
 392       attr = MALLOC_STRUCT( gl_viewport_attrib );
 393       MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
 394       newnode = new_attrib_node( GL_VIEWPORT_BIT );
 395       newnode->data = attr;
 396       newnode->next = head;
 397       head = newnode;
 398    }
 399
 400    /* GL_ARB_multisample */
 401    if (mask & GL_MULTISAMPLE_BIT_ARB) {
 402       struct gl_multisample_attrib *attr;
 403       attr = MALLOC_STRUCT( gl_multisample_attrib );
 404       MEMCPY( attr, &ctx->Multisample, sizeof(struct gl_multisample_attrib) );
 405       newnode = new_attrib_node( GL_MULTISAMPLE_BIT_ARB );
 406       newnode->data = attr;
 407       newnode->next = head;
 408       head = newnode;
 409    }
 410
 411    ctx->AttribStack[ctx->AttribStackDepth] = head;
 412    ctx->AttribStackDepth++;
 413 }
 414
 415
 416
 417 static void
 418 pop_enable_group(GLcontext *ctx, const struct gl_enable_attrib *enable)
 419 {
 420    GLuint i;
 421
 422 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)          \
 423         if ((VALUE) != (NEWVALUE)) {                    \
 424            _mesa_set_enable( ctx, ENUM, (NEWVALUE) );   \
 425         }
 426
 427    TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
 428    TEST_AND_UPDATE(ctx->Color.BlendEnabled, enable->Blend, GL_BLEND);
 429
 430    for (i=0;i<MAX_CLIP_PLANES;i++) {
 431       const GLuint mask = 1 << i;
 432       if ((ctx->Transform.ClipPlanesEnabled & mask) != (enable->ClipPlanes & mask))
 433           _mesa_set_enable(ctx, (GLenum) (GL_CLIP_PLANE0 + i),
 434                            (GLboolean) ((enable->ClipPlanes & mask) ? GL_TRUE : GL_FALSE));
 435    }
 436
 437    TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial,
 438                    GL_COLOR_MATERIAL);
 439    TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled[COLORTABLE_PRECONVOLUTION],
 440                    enable->ColorTable[COLORTABLE_PRECONVOLUTION],
 441                    GL_COLOR_TABLE);
 442    TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled[COLORTABLE_POSTCONVOLUTION],
 443                    enable->ColorTable[COLORTABLE_POSTCONVOLUTION],
 444                    GL_POST_CONVOLUTION_COLOR_TABLE);
 445    TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled[COLORTABLE_POSTCOLORMATRIX],
 446                    enable->ColorTable[COLORTABLE_POSTCOLORMATRIX],
 447                    GL_POST_COLOR_MATRIX_COLOR_TABLE);
 448    TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
 449    TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
 450    TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
 451    TEST_AND_UPDATE(ctx->Pixel.Convolution1DEnabled, enable->Convolution1D,
 452                    GL_CONVOLUTION_1D);
 453    TEST_AND_UPDATE(ctx->Pixel.Convolution2DEnabled, enable->Convolution2D,
 454                    GL_CONVOLUTION_2D);
 455    TEST_AND_UPDATE(ctx->Pixel.Separable2DEnabled, enable->Separable2D,
 456                    GL_SEPARABLE_2D);
 457    TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
 458    TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
 459    TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
 460    TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple,
 461                    GL_LINE_STIPPLE);
 462    TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp,
 463                    GL_INDEX_LOGIC_OP);
 464    TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp,
 465                    GL_COLOR_LOGIC_OP);
 466
 467    TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
 468    TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
 469    TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
 470    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1,
 471                    GL_MAP1_TEXTURE_COORD_1);
 472    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2,
 473                    GL_MAP1_TEXTURE_COORD_2);
 474    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3,
 475                    GL_MAP1_TEXTURE_COORD_3);
 476    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4,
 477                    GL_MAP1_TEXTURE_COORD_4);
 478    TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3,
 479                    GL_MAP1_VERTEX_3);
 480    TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4,
 481                    GL_MAP1_VERTEX_4);
 482    for (i = 0; i < 16; i++) {
 483       TEST_AND_UPDATE(ctx->Eval.Map1Attrib[i], enable->Map1Attrib[i],
 484                       GL_MAP1_VERTEX_ATTRIB0_4_NV + i);
 485    }
 486
 487    TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
 488    TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
 489    TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
 490    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1,
 491                    GL_MAP2_TEXTURE_COORD_1);
 492    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2,
 493                    GL_MAP2_TEXTURE_COORD_2);
 494    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3,
 495                    GL_MAP2_TEXTURE_COORD_3);
 496    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4,
 497                    GL_MAP2_TEXTURE_COORD_4);
 498    TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3,
 499                    GL_MAP2_VERTEX_3);
 500    TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4,
 501                    GL_MAP2_VERTEX_4);
 502    for (i = 0; i < 16; i++) {
 503       TEST_AND_UPDATE(ctx->Eval.Map2Attrib[i], enable->Map2Attrib[i],
 504                       GL_MAP2_VERTEX_ATTRIB0_4_NV + i);
 505    }
 506
 507    TEST_AND_UPDATE(ctx->Eval.AutoNormal, enable->AutoNormal, GL_AUTO_NORMAL);
 508    TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
 509    TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals,
 510                    GL_RESCALE_NORMAL_EXT);
 511    TEST_AND_UPDATE(ctx->Transform.RasterPositionUnclipped,
 512                    enable->RasterPositionUnclipped,
 513                    GL_RASTER_POSITION_UNCLIPPED_IBM);
 514    TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth,
 515                    GL_POINT_SMOOTH);
 516    if (ctx->Extensions.NV_point_sprite || ctx->Extensions.ARB_point_sprite) {
 517       TEST_AND_UPDATE(ctx->Point.PointSprite, enable->PointSprite,
 518                       GL_POINT_SPRITE_NV);
 519    }
 520    TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint,
 521                    GL_POLYGON_OFFSET_POINT);
 522    TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine,
 523                    GL_POLYGON_OFFSET_LINE);
 524    TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill,
 525                    GL_POLYGON_OFFSET_FILL);
 526    TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth,
 527                    GL_POLYGON_SMOOTH);
 528    TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple,
 529                    GL_POLYGON_STIPPLE);
 530    TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
 531    TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
 532    if (ctx->Extensions.EXT_stencil_two_side) {
 533       TEST_AND_UPDATE(ctx->Stencil.TestTwoSide, enable->StencilTwoSide, GL_STENCIL_TEST_TWO_SIDE_EXT);
 534    }
 535    TEST_AND_UPDATE(ctx->Multisample.Enabled, enable->MultisampleEnabled,
 536                    GL_MULTISAMPLE_ARB);
 537    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToCoverage,
 538                    enable->SampleAlphaToCoverage,
 539                    GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
 540    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToOne,
 541                    enable->SampleAlphaToOne,
 542                    GL_SAMPLE_ALPHA_TO_ONE_ARB);
 543    TEST_AND_UPDATE(ctx->Multisample.SampleCoverage,
 544                    enable->SampleCoverage,
 545                    GL_SAMPLE_COVERAGE_ARB);
 546    TEST_AND_UPDATE(ctx->Multisample.SampleCoverageInvert,
 547                    enable->SampleCoverageInvert,
 548                    GL_SAMPLE_COVERAGE_INVERT_ARB);
 549    /* GL_ARB_vertex_program, GL_NV_vertex_program */
 550    TEST_AND_UPDATE(ctx->VertexProgram.Enabled,
 551                    enable->VertexProgram,
 552                    GL_VERTEX_PROGRAM_ARB);
 553    TEST_AND_UPDATE(ctx->VertexProgram.PointSizeEnabled,
 554                    enable->VertexProgramPointSize,
 555                    GL_VERTEX_PROGRAM_POINT_SIZE_ARB);
 556    TEST_AND_UPDATE(ctx->VertexProgram.TwoSideEnabled,
 557                    enable->VertexProgramTwoSide,
 558                    GL_VERTEX_PROGRAM_TWO_SIDE_ARB);
 559
 560 #undef TEST_AND_UPDATE
 561
 562    /* texture unit enables */
 563    for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
 564       if (ctx->Texture.Unit[i].Enabled != enable->Texture[i]) {
 565          ctx->Texture.Unit[i].Enabled = enable->Texture[i];
 566          if (ctx->Driver.Enable) {
 567             if (ctx->Driver.ActiveTexture) {
 568                (*ctx->Driver.ActiveTexture)(ctx, i);
 569             }
 570             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D,
 571                              (GLboolean) (enable->Texture[i] & TEXTURE_1D_BIT) );
 572             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D,
 573                              (GLboolean) (enable->Texture[i] & TEXTURE_2D_BIT) );
 574             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D,
 575                              (GLboolean) (enable->Texture[i] & TEXTURE_3D_BIT) );
 576             if (ctx->Extensions.ARB_texture_cube_map)
 577                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_CUBE_MAP_ARB,
 578                           (GLboolean) (enable->Texture[i] & TEXTURE_CUBE_BIT) );
 579             if (ctx->Extensions.NV_texture_rectangle)
 580                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_RECTANGLE_NV,
 581                           (GLboolean) (enable->Texture[i] & TEXTURE_RECT_BIT) );
 582          }
 583       }
 584
 585       if (ctx->Texture.Unit[i].TexGenEnabled != enable->TexGen[i]) {
 586          ctx->Texture.Unit[i].TexGenEnabled = enable->TexGen[i];
 587          if (ctx->Driver.Enable) {
 588             if (ctx->Driver.ActiveTexture) {
 589                (*ctx->Driver.ActiveTexture)(ctx, i);
 590             }
 591             if (enable->TexGen[i] & S_BIT)
 592                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_TRUE);
 593             else
 594                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_FALSE);
 595             if (enable->TexGen[i] & T_BIT)
 596                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_TRUE);
 597             else
 598                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_FALSE);
 599             if (enable->TexGen[i] & R_BIT)
 600                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_TRUE);
 601             else
 602                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_FALSE);
 603             if (enable->TexGen[i] & Q_BIT)
 604                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
 605             else
 606                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
 607          }
 608       }
 609
 610       /* GL_SGI_texture_color_table */
 611       ctx->Texture.Unit[i].ColorTableEnabled = enable->TextureColorTable[i];
 612    }
 613
 614    if (ctx->Driver.ActiveTexture) {
 615       (*ctx->Driver.ActiveTexture)(ctx, ctx->Texture.CurrentUnit);
 616    }
 617 }
 618
 619
 620 static void
 621 pop_texture_group(GLcontext *ctx, const struct gl_texture_attrib *texAttrib)
 622 {
 623    GLuint u;
 624
 625    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 626       const struct gl_texture_unit *unit = &texAttrib->Unit[u];
 627       GLuint i;
 628
 629       _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + u);
 630       _mesa_set_enable(ctx, GL_TEXTURE_1D,
 631                        (unit->Enabled & TEXTURE_1D_BIT) ? GL_TRUE : GL_FALSE);
 632       _mesa_set_enable(ctx, GL_TEXTURE_2D,
 633                        (unit->Enabled & TEXTURE_2D_BIT) ? GL_TRUE : GL_FALSE);
 634       _mesa_set_enable(ctx, GL_TEXTURE_3D,
 635                        (unit->Enabled & TEXTURE_3D_BIT) ? GL_TRUE : GL_FALSE);
 636       if (ctx->Extensions.ARB_texture_cube_map) {
 637          _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP_ARB,
 638                      (unit->Enabled & TEXTURE_CUBE_BIT) ? GL_TRUE : GL_FALSE);
 639       }
 640       if (ctx->Extensions.NV_texture_rectangle) {
 641          _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_NV,
 642                      (unit->Enabled & TEXTURE_RECT_BIT) ? GL_TRUE : GL_FALSE);
 643       }
 644       if (ctx->Extensions.SGI_texture_color_table) {
 645          _mesa_set_enable(ctx, GL_TEXTURE_COLOR_TABLE_SGI,
 646                           unit->ColorTableEnabled);
 647       }
 648       _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->EnvMode);
 649       _mesa_TexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, unit->EnvColor);
 650       _mesa_TexGeni(GL_S, GL_TEXTURE_GEN_MODE, unit->GenModeS);
 651       _mesa_TexGeni(GL_T, GL_TEXTURE_GEN_MODE, unit->GenModeT);
 652       _mesa_TexGeni(GL_R, GL_TEXTURE_GEN_MODE, unit->GenModeR);
 653       _mesa_TexGeni(GL_Q, GL_TEXTURE_GEN_MODE, unit->GenModeQ);
 654       _mesa_TexGenfv(GL_S, GL_OBJECT_PLANE, unit->ObjectPlaneS);
 655       _mesa_TexGenfv(GL_T, GL_OBJECT_PLANE, unit->ObjectPlaneT);
 656       _mesa_TexGenfv(GL_R, GL_OBJECT_PLANE, unit->ObjectPlaneR);
 657       _mesa_TexGenfv(GL_Q, GL_OBJECT_PLANE, unit->ObjectPlaneQ);
 658       /* Eye plane done differently to avoid re-transformation */
 659       {
 660          struct gl_texture_unit *destUnit = &ctx->Texture.Unit[u];
 661          COPY_4FV(destUnit->EyePlaneS, unit->EyePlaneS);
 662          COPY_4FV(destUnit->EyePlaneT, unit->EyePlaneT);
 663          COPY_4FV(destUnit->EyePlaneR, unit->EyePlaneR);
 664          COPY_4FV(destUnit->EyePlaneQ, unit->EyePlaneQ);
 665          if (ctx->Driver.TexGen) {
 666             ctx->Driver.TexGen(ctx, GL_S, GL_EYE_PLANE, unit->EyePlaneS);
 667             ctx->Driver.TexGen(ctx, GL_T, GL_EYE_PLANE, unit->EyePlaneT);
 668             ctx->Driver.TexGen(ctx, GL_R, GL_EYE_PLANE, unit->EyePlaneR);
 669             ctx->Driver.TexGen(ctx, GL_Q, GL_EYE_PLANE, unit->EyePlaneQ);
 670          }
 671       }
 672       _mesa_set_enable(ctx, GL_TEXTURE_GEN_S,
 673                        ((unit->TexGenEnabled & S_BIT) ? GL_TRUE : GL_FALSE));
 674       _mesa_set_enable(ctx, GL_TEXTURE_GEN_T,
 675                        ((unit->TexGenEnabled & T_BIT) ? GL_TRUE : GL_FALSE));
 676       _mesa_set_enable(ctx, GL_TEXTURE_GEN_R,
 677                        ((unit->TexGenEnabled & R_BIT) ? GL_TRUE : GL_FALSE));
 678       _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q,
 679                        ((unit->TexGenEnabled & Q_BIT) ? GL_TRUE : GL_FALSE));
 680       if (ctx->Extensions.EXT_texture_lod_bias) {
 681          _mesa_TexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
 682                        GL_TEXTURE_LOD_BIAS_EXT, unit->LodBias);
 683       }
 684       if (ctx->Extensions.EXT_texture_env_combine ||
 685           ctx->Extensions.ARB_texture_env_combine) {
 686          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB,
 687                        unit->Combine.ModeRGB);
 688          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA,
 689                        unit->Combine.ModeA);
 690          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB,
 691                        unit->Combine.SourceRGB[0]);
 692          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB,
 693                        unit->Combine.SourceRGB[1]);
 694          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB,
 695                        unit->Combine.SourceRGB[2]);
 696          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA,
 697                        unit->Combine.SourceA[0]);
 698          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA,
 699                        unit->Combine.SourceA[1]);
 700          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA,
 701                        unit->Combine.SourceA[2]);
 702          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB,
 703                        unit->Combine.OperandRGB[0]);
 704          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB,
 705                        unit->Combine.OperandRGB[1]);
 706          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB,
 707                        unit->Combine.OperandRGB[2]);
 708          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA,
 709                        unit->Combine.OperandA[0]);
 710          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA,
 711                        unit->Combine.OperandA[1]);
 712          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA,
 713                        unit->Combine.OperandA[2]);
 714          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE,
 715                        1 << unit->Combine.ScaleShiftRGB);
 716          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE,
 717                        1 << unit->Combine.ScaleShiftA);
 718       }
 719
 720       /* Restore texture object state */
 721       for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
 722          GLenum target = 0;
 723          const struct gl_texture_object *obj = NULL;
 724          GLfloat bordColor[4];
 725
 726          switch (i) {
 727          case 0:
 728             target = GL_TEXTURE_1D;
 729             obj = &unit->Saved1D;
 730             break;
 731          case 1:
 732             target = GL_TEXTURE_2D;
 733             obj = &unit->Saved2D;
 734             break;
 735          case 2:
 736             target = GL_TEXTURE_3D;
 737             obj = &unit->Saved3D;
 738             break;
 739          case 3:
 740             if (!ctx->Extensions.ARB_texture_cube_map)
 741                continue;
 742             target = GL_TEXTURE_CUBE_MAP_ARB;
 743             obj = &unit->SavedCubeMap;
 744             break;
 745          case 4:
 746             if (!ctx->Extensions.NV_texture_rectangle)
 747                continue;
 748             target = GL_TEXTURE_RECTANGLE_NV;
 749             obj = &unit->SavedRect;
 750             break;
 751          case 5:
 752             if (!ctx->Extensions.MESA_texture_array)
 753                continue;
 754             target = GL_TEXTURE_1D_ARRAY_EXT;
 755             obj = &unit->Saved1DArray;
 756             break;
 757          case 6:
 758             if (!ctx->Extensions.MESA_texture_array)
 759                continue;
 760             target = GL_TEXTURE_2D_ARRAY_EXT;
 761             obj = &unit->Saved2DArray;
 762             break;
 763          default:
 764             ; /* silence warnings */
 765          }
 766
 767          _mesa_BindTexture(target, obj->Name);
 768
 769          bordColor[0] = CHAN_TO_FLOAT(obj->BorderColor[0]);
 770          bordColor[1] = CHAN_TO_FLOAT(obj->BorderColor[1]);
 771          bordColor[2] = CHAN_TO_FLOAT(obj->BorderColor[2]);
 772          bordColor[3] = CHAN_TO_FLOAT(obj->BorderColor[3]);
 773
 774          _mesa_TexParameterf(target, GL_TEXTURE_PRIORITY, obj->Priority);
 775          _mesa_TexParameterfv(target, GL_TEXTURE_BORDER_COLOR, bordColor);
 776          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, obj->WrapS);
 777          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, obj->WrapT);
 778          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, obj->WrapR);
 779          _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, obj->MinFilter);
 780          _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, obj->MagFilter);
 781          _mesa_TexParameterf(target, GL_TEXTURE_MIN_LOD, obj->MinLod);
 782          _mesa_TexParameterf(target, GL_TEXTURE_MAX_LOD, obj->MaxLod);
 783          _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, obj->BaseLevel);
 784          if (target != GL_TEXTURE_RECTANGLE_ARB)
 785             _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, obj->MaxLevel);
 786          if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 787             _mesa_TexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT,
 788                                 obj->MaxAnisotropy);
 789          }
 790          if (ctx->Extensions.SGIX_shadow) {
 791             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_SGIX,
 792                                 obj->CompareFlag);
 793             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_OPERATOR_SGIX,
 794                                 obj->CompareOperator);
 795          }
 796          if (ctx->Extensions.SGIX_shadow_ambient) {
 797             _mesa_TexParameterf(target, GL_SHADOW_AMBIENT_SGIX,
 798                                 obj->ShadowAmbient);
 799          }
 800
 801       }
 802    }
 803    _mesa_ActiveTextureARB(GL_TEXTURE0_ARB
 804                           + texAttrib->CurrentUnit);
 805
 806    /* "un-bump" the texture object reference counts.  We did that so they
 807     * wouldn't inadvertantly get deleted while they were still referenced
 808     * inside the attribute state stack.
 809     */
 810    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 811       ctx->Texture.Unit[u].Current1D->RefCount--;
 812       ctx->Texture.Unit[u].Current2D->RefCount--;
 813       ctx->Texture.Unit[u].Current3D->RefCount--;
 814       ctx->Texture.Unit[u].CurrentCubeMap->RefCount--;
 815       ctx->Texture.Unit[u].CurrentRect->RefCount--;
 816    }
 817 }
 818
 819
 820 /*
 821  * This function is kind of long just because we have to call a lot
 822  * of device driver functions to update device driver state.
 823  *
 824  * XXX As it is now, most of the pop-code calls immediate-mode Mesa functions
 825  * in order to restore GL state.  This isn't terribly efficient but it
 826  * ensures that dirty flags and any derived state gets updated correctly.
 827  * We could at least check if the value to restore equals the current value
 828  * and then skip the Mesa call.
 829  */
 830 void GLAPIENTRY
 831 _mesa_PopAttrib(void)
 832 {
 833    struct gl_attrib_node *attr, *next;
 834    GET_CURRENT_CONTEXT(ctx);
 835    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 836
 837    if (ctx->AttribStackDepth == 0) {
 838       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
 839       return;
 840    }
 841
 842    ctx->AttribStackDepth--;
 843    attr = ctx->AttribStack[ctx->AttribStackDepth];
 844
 845    while (attr) {
 846
 847       if (MESA_VERBOSE & VERBOSE_API) {
 848          _mesa_debug(ctx, "glPopAttrib %s\n",
 849                      _mesa_lookup_enum_by_nr(attr->kind));
 850       }
 851
 852       switch (attr->kind) {
 853          case GL_ACCUM_BUFFER_BIT:
 854             {
 855                const struct gl_accum_attrib *accum;
 856                accum = (const struct gl_accum_attrib *) attr->data;
 857                _mesa_ClearAccum(accum->ClearColor[0],
 858                                 accum->ClearColor[1],
 859                                 accum->ClearColor[2],
 860                                 accum->ClearColor[3]);
 861             }
 862             break;
 863          case GL_COLOR_BUFFER_BIT:
 864             {
 865                const struct gl_colorbuffer_attrib *color;
 866                color = (const struct gl_colorbuffer_attrib *) attr->data;
 867                _mesa_ClearIndex((GLfloat) color->ClearIndex);
 868                _mesa_ClearColor(color->ClearColor[0],
 869                                 color->ClearColor[1],
 870                                 color->ClearColor[2],
 871                                 color->ClearColor[3]);
 872                _mesa_IndexMask(color->IndexMask);
 873                _mesa_ColorMask((GLboolean) (color->ColorMask[0] != 0),
 874                                (GLboolean) (color->ColorMask[1] != 0),
 875                                (GLboolean) (color->ColorMask[2] != 0),
 876                                (GLboolean) (color->ColorMask[3] != 0));
 877                {
 878                   /* Need to determine if more than one color output is
 879                    * specified.  If so, call glDrawBuffersARB, else call
 880                    * glDrawBuffer().  This is a subtle, but essential point
 881                    * since GL_FRONT (for example) is illegal for the former
 882                    * function, but legal for the later.
 883                    */
 884                   GLboolean multipleBuffers = GL_FALSE;
 885                   if (ctx->Extensions.ARB_draw_buffers) {
 886                      GLuint i;
 887                      for (i = 1; i < ctx->Const.MaxDrawBuffers; i++) {
 888                         if (color->DrawBuffer[i] != GL_NONE) {
 889                            multipleBuffers = GL_TRUE;
 890                            break;
 891                         }
 892                      }
 893                   }
 894                   /* Call the API_level functions, not _mesa_drawbuffers()
 895                    * since we need to do error checking on the pop'd
 896                    * GL_DRAW_BUFFER.
 897                    * Ex: if GL_FRONT were pushed, but we're popping with a
 898                    * user FBO bound, GL_FRONT will be illegal and we'll need
 899                    * to record that error.  Per OpenGL ARB decision.
 900                    */
 901                   if (multipleBuffers)
 902                      _mesa_DrawBuffersARB(ctx->Const.MaxDrawBuffers,
 903                                           color->DrawBuffer);
 904                   else
 905                      _mesa_DrawBuffer(color->DrawBuffer[0]);
 906                }
 907                _mesa_set_enable(ctx, GL_ALPHA_TEST, color->AlphaEnabled);
 908                _mesa_AlphaFunc(color->AlphaFunc, color->AlphaRef);
 909                _mesa_set_enable(ctx, GL_BLEND, color->BlendEnabled);
 910                _mesa_BlendFuncSeparateEXT(color->BlendSrcRGB,
 911                                           color->BlendDstRGB,
 912                                           color->BlendSrcA,
 913                                           color->BlendDstA);
 914                /* This special case is because glBlendEquationSeparateEXT
 915                 * cannot take GL_LOGIC_OP as a parameter.
 916                 */
 917                if ( color->BlendEquationRGB == color->BlendEquationA ) {
 918                   _mesa_BlendEquation(color->BlendEquationRGB);
 919                }
 920                else {
 921                   _mesa_BlendEquationSeparateEXT(color->BlendEquationRGB,
 922                                                  color->BlendEquationA);
 923                }
 924                _mesa_BlendColor(color->BlendColor[0],
 925                                 color->BlendColor[1],
 926                                 color->BlendColor[2],
 927                                 color->BlendColor[3]);
 928                _mesa_LogicOp(color->LogicOp);
 929                _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP,
 930                                 color->ColorLogicOpEnabled);
 931                _mesa_set_enable(ctx, GL_INDEX_LOGIC_OP,
 932                                 color->IndexLogicOpEnabled);
 933                _mesa_set_enable(ctx, GL_DITHER, color->DitherFlag);
 934             }
 935             break;
 936          case GL_CURRENT_BIT:
 937             FLUSH_CURRENT( ctx, 0 );
 938             MEMCPY( &ctx->Current, attr->data,
 939                     sizeof(struct gl_current_attrib) );
 940             break;
 941          case GL_DEPTH_BUFFER_BIT:
 942             {
 943                const struct gl_depthbuffer_attrib *depth;
 944                depth = (const struct gl_depthbuffer_attrib *) attr->data;
 945                _mesa_DepthFunc(depth->Func);
 946                _mesa_ClearDepth(depth->Clear);
 947                _mesa_set_enable(ctx, GL_DEPTH_TEST, depth->Test);
 948                _mesa_DepthMask(depth->Mask);
 949             }
 950             break;
 951          case GL_ENABLE_BIT:
 952             {
 953                const struct gl_enable_attrib *enable;
 954                enable = (const struct gl_enable_attrib *) attr->data;
 955                pop_enable_group(ctx, enable);
 956                ctx->NewState |= _NEW_ALL;
 957             }
 958             break;
 959          case GL_EVAL_BIT:
 960             MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
 961             ctx->NewState |= _NEW_EVAL;
 962             break;
 963          case GL_FOG_BIT:
 964             {
 965                const struct gl_fog_attrib *fog;
 966                fog = (const struct gl_fog_attrib *) attr->data;
 967                _mesa_set_enable(ctx, GL_FOG, fog->Enabled);
 968                _mesa_Fogfv(GL_FOG_COLOR, fog->Color);
 969                _mesa_Fogf(GL_FOG_DENSITY, fog->Density);
 970                _mesa_Fogf(GL_FOG_START, fog->Start);
 971                _mesa_Fogf(GL_FOG_END, fog->End);
 972                _mesa_Fogf(GL_FOG_INDEX, fog->Index);
 973                _mesa_Fogi(GL_FOG_MODE, fog->Mode);
 974             }
 975             break;
 976          case GL_HINT_BIT:
 977             {
 978                const struct gl_hint_attrib *hint;
 979                hint = (const struct gl_hint_attrib *) attr->data;
 980                _mesa_Hint(GL_PERSPECTIVE_CORRECTION_HINT,
 981                           hint->PerspectiveCorrection );
 982                _mesa_Hint(GL_POINT_SMOOTH_HINT, hint->PointSmooth);
 983                _mesa_Hint(GL_LINE_SMOOTH_HINT, hint->LineSmooth);
 984                _mesa_Hint(GL_POLYGON_SMOOTH_HINT, hint->PolygonSmooth);
 985                _mesa_Hint(GL_FOG_HINT, hint->Fog);
 986                _mesa_Hint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT,
 987                           hint->ClipVolumeClipping);
 988                if (ctx->Extensions.ARB_texture_compression)
 989                   _mesa_Hint(GL_TEXTURE_COMPRESSION_HINT_ARB,
 990                              hint->TextureCompression);
 991             }
 992             break;
 993          case GL_LIGHTING_BIT:
 994             {
 995                GLuint i;
 996                const struct gl_light_attrib *light;
 997                light = (const struct gl_light_attrib *) attr->data;
 998                /* lighting enable */
 999                _mesa_set_enable(ctx, GL_LIGHTING, light->Enabled);
1000                /* per-light state */
1001                if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top))
1002                   _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
1003
1004                for (i = 0; i < ctx->Const.MaxLights; i++) {
1005                   const struct gl_light *l = &light->Light[i];
1006                   _mesa_set_enable(ctx, GL_LIGHT0 + i, l->Enabled);
1007                   _mesa_light(ctx, i, GL_AMBIENT, l->Ambient);
1008                   _mesa_light(ctx, i, GL_DIFFUSE, l->Diffuse);
1009                   _mesa_light(ctx, i, GL_SPECULAR, l->Specular );
1010                   _mesa_light(ctx, i, GL_POSITION, l->EyePosition);
1011                   _mesa_light(ctx, i, GL_SPOT_DIRECTION, l->EyeDirection);
1012                   _mesa_light(ctx, i, GL_SPOT_EXPONENT, &l->SpotExponent);
1013                   _mesa_light(ctx, i, GL_SPOT_CUTOFF, &l->SpotCutoff);
1014                   _mesa_light(ctx, i, GL_CONSTANT_ATTENUATION,
1015                               &l->ConstantAttenuation);
1016                   _mesa_light(ctx, i, GL_LINEAR_ATTENUATION,
1017                               &l->LinearAttenuation);
1018                   _mesa_light(ctx, i, GL_QUADRATIC_ATTENUATION,
1019                               &l->QuadraticAttenuation);
1020                }
1021                /* light model */
1022                _mesa_LightModelfv(GL_LIGHT_MODEL_AMBIENT,
1023                                   light->Model.Ambient);
1024                _mesa_LightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER,
1025                                  (GLfloat) light->Model.LocalViewer);
1026                _mesa_LightModelf(GL_LIGHT_MODEL_TWO_SIDE,
1027                                  (GLfloat) light->Model.TwoSide);
1028                _mesa_LightModelf(GL_LIGHT_MODEL_COLOR_CONTROL,
1029                                  (GLfloat) light->Model.ColorControl);
1030                /* shade model */
1031                _mesa_ShadeModel(light->ShadeModel);
1032                /* color material */
1033                _mesa_ColorMaterial(light->ColorMaterialFace,
1034                                    light->ColorMaterialMode);
1035                _mesa_set_enable(ctx, GL_COLOR_MATERIAL,
1036                                 light->ColorMaterialEnabled);
1037                /* materials */
1038                MEMCPY(&ctx->Light.Material, &light->Material,
1039                       sizeof(struct gl_material));
1040             }
1041             break;
1042          case GL_LINE_BIT:
1043             {
1044                const struct gl_line_attrib *line;
1045                line = (const struct gl_line_attrib *) attr->data;
1046                _mesa_set_enable(ctx, GL_LINE_SMOOTH, line->SmoothFlag);
1047                _mesa_set_enable(ctx, GL_LINE_STIPPLE, line->StippleFlag);
1048                _mesa_LineStipple(line->StippleFactor, line->StipplePattern);
1049                _mesa_LineWidth(line->Width);
1050             }
1051             break;
1052          case GL_LIST_BIT:
1053             MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
1054             break;
1055          case GL_PIXEL_MODE_BIT:
1056             MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
1057             /* XXX what other pixel state needs to be set by function calls? */
1058             _mesa_ReadBuffer(ctx->Pixel.ReadBuffer);
1059             ctx->NewState |= _NEW_PIXEL;
1060             break;
1061          case GL_POINT_BIT:
1062             {
1063                const struct gl_point_attrib *point;
1064                point = (const struct gl_point_attrib *) attr->data;
1065                _mesa_PointSize(point->Size);
1066                _mesa_set_enable(ctx, GL_POINT_SMOOTH, point->SmoothFlag);
1067                if (ctx->Extensions.EXT_point_parameters) {
1068                   _mesa_PointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT,
1069                                             point->Params);
1070                   _mesa_PointParameterfEXT(GL_POINT_SIZE_MIN_EXT,
1071                                            point->MinSize);
1072                   _mesa_PointParameterfEXT(GL_POINT_SIZE_MAX_EXT,
1073                                            point->MaxSize);
1074                   _mesa_PointParameterfEXT(GL_POINT_FADE_THRESHOLD_SIZE_EXT,
1075                                            point->Threshold);
1076                }
1077                if (ctx->Extensions.NV_point_sprite
1078                    || ctx->Extensions.ARB_point_sprite) {
1079                   GLuint u;
1080                   for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
1081                      _mesa_TexEnvi(GL_POINT_SPRITE_NV, GL_COORD_REPLACE_NV,
1082                                    (GLint) point->CoordReplace[u]);
1083                   }
1084                   _mesa_set_enable(ctx, GL_POINT_SPRITE_NV,point->PointSprite);
1085                   _mesa_PointParameteriNV(GL_POINT_SPRITE_R_MODE_NV,
1086                                           ctx->Point.SpriteRMode);
1087                   _mesa_PointParameterfEXT(GL_POINT_SPRITE_COORD_ORIGIN,
1088                                            (GLfloat)ctx->Point.SpriteOrigin);
1089                }
1090             }
1091             break;
1092          case GL_POLYGON_BIT:
1093             {
1094                const struct gl_polygon_attrib *polygon;
1095                polygon = (const struct gl_polygon_attrib *) attr->data;
1096                _mesa_CullFace(polygon->CullFaceMode);
1097                _mesa_FrontFace(polygon->FrontFace);
1098                _mesa_PolygonMode(GL_FRONT, polygon->FrontMode);
1099                _mesa_PolygonMode(GL_BACK, polygon->BackMode);
1100                _mesa_PolygonOffset(polygon->OffsetFactor,
1101                                    polygon->OffsetUnits);
1102                _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, polygon->SmoothFlag);
1103                _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, polygon->StippleFlag);
1104                _mesa_set_enable(ctx, GL_CULL_FACE, polygon->CullFlag);
1105                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_POINT,
1106                                 polygon->OffsetPoint);
1107                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_LINE,
1108                                 polygon->OffsetLine);
1109                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL,
1110                                 polygon->OffsetFill);
1111             }
1112             break;
1113          case GL_POLYGON_STIPPLE_BIT:
1114             MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
1115             ctx->NewState |= _NEW_POLYGONSTIPPLE;
1116             if (ctx->Driver.PolygonStipple)
1117                ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data );
1118             break;
1119          case GL_SCISSOR_BIT:
1120             {
1121                const struct gl_scissor_attrib *scissor;
1122                scissor = (const struct gl_scissor_attrib *) attr->data;
1123                _mesa_Scissor(scissor->X, scissor->Y,
1124                              scissor->Width, scissor->Height);
1125                _mesa_set_enable(ctx, GL_SCISSOR_TEST, scissor->Enabled);
1126             }
1127             break;
1128          case GL_STENCIL_BUFFER_BIT:
1129             {
1130                const struct gl_stencil_attrib *stencil;
1131                stencil = (const struct gl_stencil_attrib *) attr->data;
1132                _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);
1133                _mesa_ClearStencil(stencil->Clear);
1134                if (ctx->Extensions.EXT_stencil_two_side) {
1135                   _mesa_set_enable(ctx, GL_STENCIL_TEST_TWO_SIDE_EXT,
1136                                    stencil->TestTwoSide);
1137                   _mesa_ActiveStencilFaceEXT(stencil->ActiveFace
1138                                              ? GL_BACK : GL_FRONT);
1139                }
1140                /* front state */
1141                _mesa_StencilFuncSeparate(GL_FRONT,
1142                                          stencil->Function[0],
1143                                          stencil->Ref[0],
1144                                          stencil->ValueMask[0]);
1145                _mesa_StencilMaskSeparate(GL_FRONT, stencil->WriteMask[0]);
1146                _mesa_StencilOpSeparate(GL_FRONT, stencil->FailFunc[0],
1147                                        stencil->ZFailFunc[0],
1148                                        stencil->ZPassFunc[0]);
1149                /* back state */
1150                _mesa_StencilFuncSeparate(GL_BACK,
1151                                          stencil->Function[1],
1152                                          stencil->Ref[1],
1153                                          stencil->ValueMask[1]);
1154                _mesa_StencilMaskSeparate(GL_BACK, stencil->WriteMask[1]);
1155                _mesa_StencilOpSeparate(GL_BACK, stencil->FailFunc[1],
1156                                        stencil->ZFailFunc[1],
1157                                        stencil->ZPassFunc[1]);
1158             }
1159             break;
1160          case GL_TRANSFORM_BIT:
1161             {
1162                GLuint i;
1163                const struct gl_transform_attrib *xform;
1164                xform = (const struct gl_transform_attrib *) attr->data;
1165                _mesa_MatrixMode(xform->MatrixMode);
1166                if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top))
1167                   _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
1168
1169                /* restore clip planes */
1170                for (i = 0; i < MAX_CLIP_PLANES; i++) {
1171                   const GLuint mask = 1 << 1;
1172                   const GLfloat *eyePlane = xform->EyeUserPlane[i];
1173                   COPY_4V(ctx->Transform.EyeUserPlane[i], eyePlane);
1174                   if (xform->ClipPlanesEnabled & mask) {
1175                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE);
1176                   }
1177                   else {
1178                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_FALSE);
1179                   }
1180                   if (ctx->Driver.ClipPlane)
1181                      ctx->Driver.ClipPlane( ctx, GL_CLIP_PLANE0 + i, eyePlane );
1182                }
1183
1184                /* normalize/rescale */
1185                if (xform->Normalize != ctx->Transform.Normalize)
1186                   _mesa_set_enable(ctx, GL_NORMALIZE,ctx->Transform.Normalize);
1187                if (xform->RescaleNormals != ctx->Transform.RescaleNormals)
1188                   _mesa_set_enable(ctx, GL_RESCALE_NORMAL_EXT,
1189                                    ctx->Transform.RescaleNormals);
1190             }
1191             break;
1192          case GL_TEXTURE_BIT:
1193             /* Take care of texture object reference counters */
1194             {
1195                const struct gl_texture_attrib *texture;
1196                texture = (const struct gl_texture_attrib *) attr->data;
1197                pop_texture_group(ctx, texture);
1198                ctx->NewState |= _NEW_TEXTURE;
1199             }
1200             break;
1201          case GL_VIEWPORT_BIT:
1202             {
1203                const struct gl_viewport_attrib *vp;
1204                vp = (const struct gl_viewport_attrib *) attr->data;
1205                _mesa_Viewport(vp->X, vp->Y, vp->Width, vp->Height);
1206                _mesa_DepthRange(vp->Near, vp->Far);
1207             }
1208             break;
1209          case GL_MULTISAMPLE_BIT_ARB:
1210             {
1211                const struct gl_multisample_attrib *ms;
1212                ms = (const struct gl_multisample_attrib *) attr->data;
1213                _mesa_SampleCoverageARB(ms->SampleCoverageValue,
1214                                        ms->SampleCoverageInvert);
1215             }
1216             break;
1217
1218          default:
1219             _mesa_problem( ctx, "Bad attrib flag in PopAttrib");
1220             break;
1221       }
1222
1223       next = attr->next;
1224       FREE( attr->data );
1225       FREE( attr );
1226       attr = next;
1227    }
1228 }
1229
1230
1231 /**
1232  * Helper for incrementing/decrementing vertex buffer object reference
1233  * counts when pushing/popping the GL_CLIENT_VERTEX_ARRAY_BIT attribute group.
1234  */
1235 static void
1236 adjust_buffer_object_ref_counts(struct gl_array_attrib *array, GLint step)
1237 {
1238    GLuint i;
1239    array->ArrayObj->Vertex.BufferObj->RefCount += step;
1240    array->ArrayObj->Normal.BufferObj->RefCount += step;
1241    array->ArrayObj->Color.BufferObj->RefCount += step;
1242    array->ArrayObj->SecondaryColor.BufferObj->RefCount += step;
1243    array->ArrayObj->FogCoord.BufferObj->RefCount += step;
1244    array->ArrayObj->Index.BufferObj->RefCount += step;
1245    array->ArrayObj->EdgeFlag.BufferObj->RefCount += step;
1246    for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++)
1247       array->ArrayObj->TexCoord[i].BufferObj->RefCount += step;
1248    for (i = 0; i < VERT_ATTRIB_MAX; i++)
1249       array->ArrayObj->VertexAttrib[i].BufferObj->RefCount += step;
1250
1251    array->ArrayBufferObj->RefCount += step;
1252    array->ElementArrayBufferObj->RefCount += step;
1253 }
1254
1255
1256 #define GL_CLIENT_PACK_BIT (1<<20)
1257 #define GL_CLIENT_UNPACK_BIT (1<<21)
1258
1259
1260 void GLAPIENTRY
1261 _mesa_PushClientAttrib(GLbitfield mask)
1262 {
1263    struct gl_attrib_node *newnode;
1264    struct gl_attrib_node *head;
1265
1266    GET_CURRENT_CONTEXT(ctx);
1267    ASSERT_OUTSIDE_BEGIN_END(ctx);
1268
1269    if (ctx->ClientAttribStackDepth >= MAX_CLIENT_ATTRIB_STACK_DEPTH) {
1270       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
1271       return;
1272    }
1273
1274    /* Build linked list of attribute nodes which save all attribute */
1275    /* groups specified by the mask. */
1276    head = NULL;
1277
1278    if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
1279       struct gl_pixelstore_attrib *attr;
1280 #if FEATURE_EXT_pixel_buffer_object
1281       ctx->Pack.BufferObj->RefCount++;
1282       ctx->Unpack.BufferObj->RefCount++;
1283 #endif
1284       /* packing attribs */
1285       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1286       MEMCPY( attr, &ctx->Pack, sizeof(struct gl_pixelstore_attrib) );
1287       newnode = new_attrib_node( GL_CLIENT_PACK_BIT );
1288       newnode->data = attr;
1289       newnode->next = head;
1290       head = newnode;
1291       /* unpacking attribs */
1292       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1293       MEMCPY( attr, &ctx->Unpack, sizeof(struct gl_pixelstore_attrib) );
1294       newnode = new_attrib_node( GL_CLIENT_UNPACK_BIT );
1295       newnode->data = attr;
1296       newnode->next = head;
1297       head = newnode;
1298    }
1299    if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
1300       struct gl_array_attrib *attr;
1301       struct gl_array_object *obj;
1302
1303       attr = MALLOC_STRUCT( gl_array_attrib );
1304       obj = MALLOC_STRUCT( gl_array_object );
1305
1306 #if FEATURE_ARB_vertex_buffer_object
1307       /* increment ref counts since we're copying pointers to these objects */
1308       ctx->Array.ArrayBufferObj->RefCount++;
1309       ctx->Array.ElementArrayBufferObj->RefCount++;
1310 #endif
1311
1312       MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
1313       MEMCPY( obj, ctx->Array.ArrayObj, sizeof(struct gl_array_object) );
1314
1315       attr->ArrayObj = obj;
1316
1317       newnode = new_attrib_node( GL_CLIENT_VERTEX_ARRAY_BIT );
1318       newnode->data = attr;
1319       newnode->next = head;
1320       head = newnode;
1321       /* bump reference counts on buffer objects */
1322       adjust_buffer_object_ref_counts(&ctx->Array, 1);
1323    }
1324
1325    ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
1326    ctx->ClientAttribStackDepth++;
1327 }
1328
1329
1330
1331
1332 void GLAPIENTRY
1333 _mesa_PopClientAttrib(void)
1334 {
1335    struct gl_attrib_node *attr, *next;
1336
1337    GET_CURRENT_CONTEXT(ctx);
1338    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1339
1340    if (ctx->ClientAttribStackDepth == 0) {
1341       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
1342       return;
1343    }
1344
1345    ctx->ClientAttribStackDepth--;
1346    attr = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
1347
1348    while (attr) {
1349       switch (attr->kind) {
1350          case GL_CLIENT_PACK_BIT:
1351 #if FEATURE_EXT_pixel_buffer_object
1352             ctx->Pack.BufferObj->RefCount--;
1353             if (ctx->Pack.BufferObj->RefCount <= 0) {
1354                _mesa_remove_buffer_object( ctx, ctx->Pack.BufferObj );
1355                (*ctx->Driver.DeleteBuffer)( ctx, ctx->Pack.BufferObj );
1356             }
1357 #endif
1358             MEMCPY( &ctx->Pack, attr->data,
1359                     sizeof(struct gl_pixelstore_attrib) );
1360             ctx->NewState |= _NEW_PACKUNPACK;
1361             break;
1362          case GL_CLIENT_UNPACK_BIT:
1363 #if FEATURE_EXT_pixel_buffer_object
1364             ctx->Unpack.BufferObj->RefCount--;
1365             if (ctx->Unpack.BufferObj->RefCount <= 0) {
1366                _mesa_remove_buffer_object( ctx, ctx->Unpack.BufferObj );
1367                (*ctx->Driver.DeleteBuffer)( ctx, ctx->Unpack.BufferObj );
1368             }
1369 #endif
1370             MEMCPY( &ctx->Unpack, attr->data,
1371                     sizeof(struct gl_pixelstore_attrib) );
1372             ctx->NewState |= _NEW_PACKUNPACK;
1373             break;
1374          case GL_CLIENT_VERTEX_ARRAY_BIT: {
1375             struct gl_array_attrib * data =
1376               (struct gl_array_attrib *) attr->data;
1377
1378             adjust_buffer_object_ref_counts(&ctx->Array, -1);
1379
1380             ctx->Array.ActiveTexture = data->ActiveTexture;
1381             ctx->Array.LockFirst = data->LockFirst;
1382             ctx->Array.LockCount = data->LockCount;
1383
1384             _mesa_BindVertexArrayAPPLE( data->ArrayObj->Name );
1385
1386 #if FEATURE_ARB_vertex_buffer_object
1387             _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB,
1388                                 data->ArrayBufferObj->Name);
1389             _mesa_BindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB,
1390                                 data->ElementArrayBufferObj->Name);
1391 #endif
1392
1393             MEMCPY( ctx->Array.ArrayObj, data->ArrayObj,
1394                     sizeof( struct gl_array_object ) );
1395
1396             FREE( data->ArrayObj );
1397
1398             /* FIXME: Should some bits in ctx->Array->NewState also be set
1399              * FIXME: here?  It seems like it should be set to inclusive-or
1400              * FIXME: of the old ArrayObj->_Enabled and the new _Enabled.
1401              */
1402
1403             ctx->NewState |= _NEW_ARRAY;
1404             break;
1405          }
1406          default:
1407             _mesa_problem( ctx, "Bad attrib flag in PopClientAttrib");
1408             break;
1409       }
1410
1411       next = attr->next;
1412       FREE( attr->data );
1413       FREE( attr );
1414       attr = next;
1415    }
1416 }
1417
1418
1419 void _mesa_init_attrib( GLcontext *ctx )
1420 {
1421    /* Renderer and client attribute stacks */
1422    ctx->AttribStackDepth = 0;
1423    ctx->ClientAttribStackDepth = 0;
1424 }