src/mesa/main/attrib.c

   1 /* $Id: attrib.c,v 1.74 2002/10/17 22:26:06 kschultz Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  4.1
   6  *
   7  * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27
  28 #ifdef PC_HEADER
  29 #include "all.h"
  30 #else
  31 #include "glheader.h"
  32 #include "accum.h"
  33 #include "attrib.h"
  34 #include "blend.h"
  35 #include "buffers.h"
  36 #include "colormac.h"
  37 #include "context.h"
  38 #include "depth.h"
  39 #include "enable.h"
  40 #include "enums.h"
  41 #include "fog.h"
  42 #include "hint.h"
  43 #include "light.h"
  44 #include "lines.h"
  45 #include "matrix.h"
  46 #include "mem.h"
  47 #include "points.h"
  48 #include "polygon.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 #endif
  56
  57
  58
  59
  60 /*
  61  * Allocate a new attribute state node.  These nodes have a
  62  * "kind" value and a pointer to a struct of state data.
  63  */
  64 static struct gl_attrib_node *
  65 new_attrib_node( GLbitfield kind )
  66 {
  67    struct gl_attrib_node *an = MALLOC_STRUCT(gl_attrib_node);
  68    if (an) {
  69       an->kind = kind;
  70    }
  71    return an;
  72 }
  73
  74
  75 void
  76 _mesa_PushAttrib(GLbitfield mask)
  77 {
  78    struct gl_attrib_node *newnode;
  79    struct gl_attrib_node *head;
  80
  81    GET_CURRENT_CONTEXT(ctx);
  82    ASSERT_OUTSIDE_BEGIN_END(ctx);
  83
  84    if (MESA_VERBOSE & VERBOSE_API)
  85       _mesa_debug(ctx, "glPushAttrib %x\n", (int) mask);
  86
  87    if (ctx->AttribStackDepth >= MAX_ATTRIB_STACK_DEPTH) {
  88       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
  89       return;
  90    }
  91
  92    /* Build linked list of attribute nodes which save all attribute */
  93    /* groups specified by the mask. */
  94    head = NULL;
  95
  96    if (mask & GL_ACCUM_BUFFER_BIT) {
  97       struct gl_accum_attrib *attr;
  98       attr = MALLOC_STRUCT( gl_accum_attrib );
  99       MEMCPY( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );
 100       newnode = new_attrib_node( GL_ACCUM_BUFFER_BIT );
 101       newnode->data = attr;
 102       newnode->next = head;
 103       head = newnode;
 104    }
 105
 106    if (mask & GL_COLOR_BUFFER_BIT) {
 107       struct gl_colorbuffer_attrib *attr;
 108       attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
 109       MEMCPY( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
 110       newnode = new_attrib_node( GL_COLOR_BUFFER_BIT );
 111       newnode->data = attr;
 112       newnode->next = head;
 113       head = newnode;
 114    }
 115
 116    if (mask & GL_CURRENT_BIT) {
 117       struct gl_current_attrib *attr;
 118       FLUSH_CURRENT( ctx, 0 );
 119       attr = MALLOC_STRUCT( gl_current_attrib );
 120       MEMCPY( attr, &ctx->Current, sizeof(struct gl_current_attrib) );
 121       newnode = new_attrib_node( GL_CURRENT_BIT );
 122       newnode->data = attr;
 123       newnode->next = head;
 124       head = newnode;
 125    }
 126
 127    if (mask & GL_DEPTH_BUFFER_BIT) {
 128       struct gl_depthbuffer_attrib *attr;
 129       attr = MALLOC_STRUCT( gl_depthbuffer_attrib );
 130       MEMCPY( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );
 131       newnode = new_attrib_node( GL_DEPTH_BUFFER_BIT );
 132       newnode->data = attr;
 133       newnode->next = head;
 134       head = newnode;
 135    }
 136
 137    if (mask & GL_ENABLE_BIT) {
 138       struct gl_enable_attrib *attr;
 139       GLuint i;
 140       attr = MALLOC_STRUCT( gl_enable_attrib );
 141       /* Copy enable flags from all other attributes into the enable struct. */
 142       attr->AlphaTest = ctx->Color.AlphaEnabled;
 143       attr->AutoNormal = ctx->Eval.AutoNormal;
 144       attr->Blend = ctx->Color.BlendEnabled;
 145       attr->ClipPlanes = ctx->Transform.ClipPlanesEnabled;
 146       attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;
 147       attr->Convolution1D = ctx->Pixel.Convolution1DEnabled;
 148       attr->Convolution2D = ctx->Pixel.Convolution2DEnabled;
 149       attr->Separable2D = ctx->Pixel.Separable2DEnabled;
 150       attr->CullFace = ctx->Polygon.CullFlag;
 151       attr->DepthTest = ctx->Depth.Test;
 152       attr->Dither = ctx->Color.DitherFlag;
 153       attr->Fog = ctx->Fog.Enabled;
 154       for (i=0;i<MAX_LIGHTS;i++) {
 155          attr->Light[i] = ctx->Light.Light[i].Enabled;
 156       }
 157       attr->Lighting = ctx->Light.Enabled;
 158       attr->LineSmooth = ctx->Line.SmoothFlag;
 159       attr->LineStipple = ctx->Line.StippleFlag;
 160       attr->Histogram = ctx->Pixel.HistogramEnabled;
 161       attr->MinMax = ctx->Pixel.MinMaxEnabled;
 162       attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
 163       attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
 164       attr->Map1Color4 = ctx->Eval.Map1Color4;
 165       attr->Map1Index = ctx->Eval.Map1Index;
 166       attr->Map1Normal = ctx->Eval.Map1Normal;
 167       attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
 168       attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
 169       attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
 170       attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
 171       attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
 172       attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
 173       MEMCPY(attr->Map1Attrib, ctx->Eval.Map1Attrib, sizeof(ctx->Eval.Map1Attrib));
 174       attr->Map2Color4 = ctx->Eval.Map2Color4;
 175       attr->Map2Index = ctx->Eval.Map2Index;
 176       attr->Map2Normal = ctx->Eval.Map2Normal;
 177       attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
 178       attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
 179       attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
 180       attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
 181       attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
 182       attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
 183       MEMCPY(attr->Map2Attrib, ctx->Eval.Map2Attrib, sizeof(ctx->Eval.Map2Attrib));
 184       attr->Normalize = ctx->Transform.Normalize;
 185       attr->RasterPositionUnclipped = ctx->Transform.RasterPositionUnclipped;
 186       attr->PixelTexture = ctx->Pixel.PixelTextureEnabled;
 187       attr->PointSmooth = ctx->Point.SmoothFlag;
 188       attr->PointSprite = ctx->Point.PointSprite;
 189       attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;
 190       attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;
 191       attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;
 192       attr->PolygonSmooth = ctx->Polygon.SmoothFlag;
 193       attr->PolygonStipple = ctx->Polygon.StippleFlag;
 194       attr->RescaleNormals = ctx->Transform.RescaleNormals;
 195       attr->Scissor = ctx->Scissor.Enabled;
 196       attr->Stencil = ctx->Stencil.Enabled;
 197       attr->MultisampleEnabled = ctx->Multisample.Enabled;
 198       attr->SampleAlphaToCoverage = ctx->Multisample.SampleAlphaToCoverage;
 199       attr->SampleAlphaToOne = ctx->Multisample.SampleAlphaToOne;
 200       attr->SampleCoverage = ctx->Multisample.SampleCoverage;
 201       attr->SampleCoverageInvert = ctx->Multisample.SampleCoverageInvert;
 202       for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 203          attr->Texture[i] = ctx->Texture.Unit[i].Enabled;
 204          attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
 205       }
 206       /* GL_NV_vertex_program */
 207       attr->VertexProgram = ctx->VertexProgram.Enabled;
 208       attr->VertexProgramPointSize = ctx->VertexProgram.PointSizeEnabled;
 209       attr->VertexProgramTwoSide = ctx->VertexProgram.TwoSideEnabled;
 210       newnode = new_attrib_node( GL_ENABLE_BIT );
 211       newnode->data = attr;
 212       newnode->next = head;
 213       head = newnode;
 214    }
 215
 216    if (mask & GL_EVAL_BIT) {
 217       struct gl_eval_attrib *attr;
 218       attr = MALLOC_STRUCT( gl_eval_attrib );
 219       MEMCPY( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
 220       newnode = new_attrib_node( GL_EVAL_BIT );
 221       newnode->data = attr;
 222       newnode->next = head;
 223       head = newnode;
 224    }
 225
 226    if (mask & GL_FOG_BIT) {
 227       struct gl_fog_attrib *attr;
 228       attr = MALLOC_STRUCT( gl_fog_attrib );
 229       MEMCPY( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
 230       newnode = new_attrib_node( GL_FOG_BIT );
 231       newnode->data = attr;
 232       newnode->next = head;
 233       head = newnode;
 234    }
 235
 236    if (mask & GL_HINT_BIT) {
 237       struct gl_hint_attrib *attr;
 238       attr = MALLOC_STRUCT( gl_hint_attrib );
 239       MEMCPY( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
 240       newnode = new_attrib_node( GL_HINT_BIT );
 241       newnode->data = attr;
 242       newnode->next = head;
 243       head = newnode;
 244    }
 245
 246    if (mask & GL_LIGHTING_BIT) {
 247       struct gl_light_attrib *attr;
 248       FLUSH_CURRENT(ctx, 0);    /* flush material changes */
 249       attr = MALLOC_STRUCT( gl_light_attrib );
 250       MEMCPY( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
 251       newnode = new_attrib_node( GL_LIGHTING_BIT );
 252       newnode->data = attr;
 253       newnode->next = head;
 254       head = newnode;
 255    }
 256
 257    if (mask & GL_LINE_BIT) {
 258       struct gl_line_attrib *attr;
 259       attr = MALLOC_STRUCT( gl_line_attrib );
 260       MEMCPY( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
 261       newnode = new_attrib_node( GL_LINE_BIT );
 262       newnode->data = attr;
 263       newnode->next = head;
 264       head = newnode;
 265    }
 266
 267    if (mask & GL_LIST_BIT) {
 268       struct gl_list_attrib *attr;
 269       attr = MALLOC_STRUCT( gl_list_attrib );
 270       MEMCPY( attr, &ctx->List, sizeof(struct gl_list_attrib) );
 271       newnode = new_attrib_node( GL_LIST_BIT );
 272       newnode->data = attr;
 273       newnode->next = head;
 274       head = newnode;
 275    }
 276
 277    if (mask & GL_PIXEL_MODE_BIT) {
 278       struct gl_pixel_attrib *attr;
 279       attr = MALLOC_STRUCT( gl_pixel_attrib );
 280       MEMCPY( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
 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       /* Bump the texture object reference counts so that they don't
 341        * inadvertantly get deleted.
 342        */
 343       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 344          ctx->Texture.Unit[u].Current1D->RefCount++;
 345          ctx->Texture.Unit[u].Current2D->RefCount++;
 346          ctx->Texture.Unit[u].Current3D->RefCount++;
 347          ctx->Texture.Unit[u].CurrentCubeMap->RefCount++;
 348          ctx->Texture.Unit[u].CurrentRect->RefCount++;
 349       }
 350       attr = MALLOC_STRUCT( gl_texture_attrib );
 351       MEMCPY( attr, &ctx->Texture, sizeof(struct gl_texture_attrib) );
 352       /* copy state of the currently bound texture objects */
 353       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 354          _mesa_copy_texture_object(&attr->Unit[u].Saved1D,
 355                                    attr->Unit[u].Current1D);
 356          _mesa_copy_texture_object(&attr->Unit[u].Saved2D,
 357                                    attr->Unit[u].Current2D);
 358          _mesa_copy_texture_object(&attr->Unit[u].Saved3D,
 359                                    attr->Unit[u].Current3D);
 360          _mesa_copy_texture_object(&attr->Unit[u].SavedCubeMap,
 361                                    attr->Unit[u].CurrentCubeMap);
 362          _mesa_copy_texture_object(&attr->Unit[u].SavedRect,
 363                                    attr->Unit[u].CurrentRect);
 364       }
 365       newnode = new_attrib_node( GL_TEXTURE_BIT );
 366       newnode->data = attr;
 367       newnode->next = head;
 368       head = newnode;
 369    }
 370
 371    if (mask & GL_TRANSFORM_BIT) {
 372       struct gl_transform_attrib *attr;
 373       attr = MALLOC_STRUCT( gl_transform_attrib );
 374       MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
 375       newnode = new_attrib_node( GL_TRANSFORM_BIT );
 376       newnode->data = attr;
 377       newnode->next = head;
 378       head = newnode;
 379    }
 380
 381    if (mask & GL_VIEWPORT_BIT) {
 382       struct gl_viewport_attrib *attr;
 383       attr = MALLOC_STRUCT( gl_viewport_attrib );
 384       MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
 385       newnode = new_attrib_node( GL_VIEWPORT_BIT );
 386       newnode->data = attr;
 387       newnode->next = head;
 388       head = newnode;
 389    }
 390
 391    /* GL_ARB_multisample */
 392    if (mask & GL_MULTISAMPLE_BIT_ARB) {
 393       struct gl_multisample_attrib *attr;
 394       attr = MALLOC_STRUCT( gl_multisample_attrib );
 395       MEMCPY( attr, &ctx->Multisample, sizeof(struct gl_multisample_attrib) );
 396       newnode = new_attrib_node( GL_MULTISAMPLE_BIT_ARB );
 397       newnode->data = attr;
 398       newnode->next = head;
 399       head = newnode;
 400    }
 401
 402    ctx->AttribStack[ctx->AttribStackDepth] = head;
 403    ctx->AttribStackDepth++;
 404 }
 405
 406
 407
 408 static void
 409 pop_enable_group(GLcontext *ctx, const struct gl_enable_attrib *enable)
 410 {
 411    GLuint i;
 412
 413 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)          \
 414         if ((VALUE) != (NEWVALUE)) {                    \
 415            _mesa_set_enable( ctx, ENUM, (NEWVALUE) );   \
 416         }
 417
 418    TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
 419    TEST_AND_UPDATE(ctx->Color.BlendEnabled, enable->Blend, GL_BLEND);
 420
 421    for (i=0;i<MAX_CLIP_PLANES;i++) {
 422       const GLuint mask = 1 << i;
 423       if ((ctx->Transform.ClipPlanesEnabled & mask) != (enable->ClipPlanes & mask))
 424           _mesa_set_enable(ctx, (GLenum) (GL_CLIP_PLANE0 + i),
 425                            (GLboolean) ((enable->ClipPlanes & mask) ? GL_TRUE : GL_FALSE));
 426    }
 427
 428    TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial,
 429                    GL_COLOR_MATERIAL);
 430    TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
 431    TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
 432    TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
 433    TEST_AND_UPDATE(ctx->Pixel.Convolution1DEnabled, enable->Convolution1D,
 434                    GL_CONVOLUTION_1D);
 435    TEST_AND_UPDATE(ctx->Pixel.Convolution2DEnabled, enable->Convolution2D,
 436                    GL_CONVOLUTION_2D);
 437    TEST_AND_UPDATE(ctx->Pixel.Separable2DEnabled, enable->Separable2D,
 438                    GL_SEPARABLE_2D);
 439    TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
 440    TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
 441    TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
 442    TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple,
 443                    GL_LINE_STIPPLE);
 444    TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp,
 445                    GL_INDEX_LOGIC_OP);
 446    TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp,
 447                    GL_COLOR_LOGIC_OP);
 448
 449    TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
 450    TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
 451    TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
 452    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1,
 453                    GL_MAP1_TEXTURE_COORD_1);
 454    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2,
 455                    GL_MAP1_TEXTURE_COORD_2);
 456    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3,
 457                    GL_MAP1_TEXTURE_COORD_3);
 458    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4,
 459                    GL_MAP1_TEXTURE_COORD_4);
 460    TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3,
 461                    GL_MAP1_VERTEX_3);
 462    TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4,
 463                    GL_MAP1_VERTEX_4);
 464    for (i = 0; i < 16; i++) {
 465       TEST_AND_UPDATE(ctx->Eval.Map1Attrib[i], enable->Map1Attrib[i],
 466                       GL_MAP1_VERTEX_ATTRIB0_4_NV + i);
 467    }
 468
 469    TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
 470    TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
 471    TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
 472    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1,
 473                    GL_MAP2_TEXTURE_COORD_1);
 474    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2,
 475                    GL_MAP2_TEXTURE_COORD_2);
 476    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3,
 477                    GL_MAP2_TEXTURE_COORD_3);
 478    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4,
 479                    GL_MAP2_TEXTURE_COORD_4);
 480    TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3,
 481                    GL_MAP2_VERTEX_3);
 482    TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4,
 483                    GL_MAP2_VERTEX_4);
 484    for (i = 0; i < 16; i++) {
 485       TEST_AND_UPDATE(ctx->Eval.Map2Attrib[i], enable->Map2Attrib[i],
 486                       GL_MAP2_VERTEX_ATTRIB0_4_NV + i);
 487    }
 488
 489    TEST_AND_UPDATE(ctx->Eval.AutoNormal, enable->AutoNormal, GL_AUTO_NORMAL);
 490    TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
 491    TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals,
 492                    GL_RESCALE_NORMAL_EXT);
 493    TEST_AND_UPDATE(ctx->Transform.RasterPositionUnclipped,
 494                    enable->RasterPositionUnclipped,
 495                    GL_RASTER_POSITION_UNCLIPPED_IBM);
 496    TEST_AND_UPDATE(ctx->Pixel.PixelTextureEnabled, enable->PixelTexture,
 497                    GL_POINT_SMOOTH);
 498    TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth,
 499                    GL_POINT_SMOOTH);
 500    if (ctx->Extensions.NV_point_sprite) {
 501       TEST_AND_UPDATE(ctx->Point.PointSprite, enable->PointSprite,
 502                       GL_POINT_SPRITE_NV);
 503    }
 504    TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint,
 505                    GL_POLYGON_OFFSET_POINT);
 506    TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine,
 507                    GL_POLYGON_OFFSET_LINE);
 508    TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill,
 509                    GL_POLYGON_OFFSET_FILL);
 510    TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth,
 511                    GL_POLYGON_SMOOTH);
 512    TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple,
 513                    GL_POLYGON_STIPPLE);
 514    TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
 515    TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
 516    /* XXX two-sided stencil */
 517    TEST_AND_UPDATE(ctx->Multisample.Enabled, enable->MultisampleEnabled,
 518                    GL_MULTISAMPLE_ARB);
 519    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToCoverage,
 520                    enable->SampleAlphaToCoverage,
 521                    GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
 522    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToOne,
 523                    enable->SampleAlphaToOne,
 524                    GL_SAMPLE_ALPHA_TO_ONE_ARB);
 525    TEST_AND_UPDATE(ctx->Multisample.SampleCoverage,
 526                    enable->SampleCoverage,
 527                    GL_SAMPLE_COVERAGE_ARB);
 528    TEST_AND_UPDATE(ctx->Multisample.SampleCoverageInvert,
 529                    enable->SampleCoverageInvert,
 530                    GL_SAMPLE_COVERAGE_INVERT_ARB);
 531    /* GL_NV_vertex_program */
 532    TEST_AND_UPDATE(ctx->VertexProgram.Enabled,
 533                    enable->VertexProgram,
 534                    GL_VERTEX_PROGRAM_NV);
 535    TEST_AND_UPDATE(ctx->VertexProgram.PointSizeEnabled,
 536                    enable->VertexProgramPointSize,
 537                    GL_VERTEX_PROGRAM_POINT_SIZE_NV);
 538    TEST_AND_UPDATE(ctx->VertexProgram.TwoSideEnabled,
 539                    enable->VertexProgramTwoSide,
 540                    GL_VERTEX_PROGRAM_TWO_SIDE_NV);
 541
 542 #undef TEST_AND_UPDATE
 543
 544    /* texture unit enables */
 545    for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
 546       if (ctx->Texture.Unit[i].Enabled != enable->Texture[i]) {
 547          ctx->Texture.Unit[i].Enabled = enable->Texture[i];
 548          if (ctx->Driver.Enable) {
 549             if (ctx->Driver.ActiveTexture) {
 550                (*ctx->Driver.ActiveTexture)(ctx, i);
 551             }
 552             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D,
 553                              (GLboolean) (enable->Texture[i] & TEXTURE_1D_BIT) );
 554             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D,
 555                              (GLboolean) (enable->Texture[i] & TEXTURE_2D_BIT) );
 556             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D,
 557                              (GLboolean) (enable->Texture[i] & TEXTURE_3D_BIT) );
 558             if (ctx->Extensions.ARB_texture_cube_map)
 559                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_CUBE_MAP_ARB,
 560                           (GLboolean) (enable->Texture[i] & TEXTURE_CUBE_BIT) );
 561             if (ctx->Extensions.NV_texture_rectangle)
 562                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_RECTANGLE_NV,
 563                           (GLboolean) (enable->Texture[i] & TEXTURE_RECT_BIT) );
 564          }
 565       }
 566
 567       if (ctx->Texture.Unit[i].TexGenEnabled != enable->TexGen[i]) {
 568          ctx->Texture.Unit[i].TexGenEnabled = enable->TexGen[i];
 569          if (ctx->Driver.Enable) {
 570             if (ctx->Driver.ActiveTexture) {
 571                (*ctx->Driver.ActiveTexture)(ctx, i);
 572             }
 573             if (enable->TexGen[i] & S_BIT)
 574                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_TRUE);
 575             else
 576                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_FALSE);
 577             if (enable->TexGen[i] & T_BIT)
 578                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_TRUE);
 579             else
 580                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_FALSE);
 581             if (enable->TexGen[i] & R_BIT)
 582                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_TRUE);
 583             else
 584                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_FALSE);
 585             if (enable->TexGen[i] & Q_BIT)
 586                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
 587             else
 588                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
 589          }
 590       }
 591    }
 592
 593    if (ctx->Driver.ActiveTexture) {
 594       (*ctx->Driver.ActiveTexture)(ctx, ctx->Texture.CurrentUnit);
 595    }
 596 }
 597
 598
 599 static void
 600 pop_texture_group(GLcontext *ctx, const struct gl_texture_attrib *texAttrib)
 601 {
 602    GLuint u;
 603
 604    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 605       const struct gl_texture_unit *unit = &texAttrib->Unit[u];
 606       GLuint i;
 607
 608       _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + u);
 609       _mesa_set_enable(ctx, GL_TEXTURE_1D,
 610               (GLboolean) (unit->Enabled & TEXTURE_1D_BIT ? GL_TRUE : GL_FALSE));
 611       _mesa_set_enable(ctx, GL_TEXTURE_2D,
 612               (GLboolean) (unit->Enabled & TEXTURE_2D_BIT ? GL_TRUE : GL_FALSE));
 613       _mesa_set_enable(ctx, GL_TEXTURE_3D,
 614               (GLboolean) (unit->Enabled & TEXTURE_3D_BIT ? GL_TRUE : GL_FALSE));
 615       if (ctx->Extensions.ARB_texture_cube_map) {
 616          _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP_ARB,
 617              (GLboolean) (unit->Enabled & TEXTURE_CUBE_BIT ? GL_TRUE : GL_FALSE));
 618       }
 619       if (ctx->Extensions.NV_texture_rectangle) {
 620          _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_NV,
 621              (GLboolean) (unit->Enabled & TEXTURE_RECT_BIT ? GL_TRUE : GL_FALSE));
 622       }
 623       _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->EnvMode);
 624       _mesa_TexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, unit->EnvColor);
 625       _mesa_TexGeni(GL_S, GL_TEXTURE_GEN_MODE, unit->GenModeS);
 626       _mesa_TexGeni(GL_T, GL_TEXTURE_GEN_MODE, unit->GenModeT);
 627       _mesa_TexGeni(GL_R, GL_TEXTURE_GEN_MODE, unit->GenModeR);
 628       _mesa_TexGeni(GL_Q, GL_TEXTURE_GEN_MODE, unit->GenModeQ);
 629       _mesa_TexGenfv(GL_S, GL_OBJECT_PLANE, unit->ObjectPlaneS);
 630       _mesa_TexGenfv(GL_T, GL_OBJECT_PLANE, unit->ObjectPlaneT);
 631       _mesa_TexGenfv(GL_R, GL_OBJECT_PLANE, unit->ObjectPlaneR);
 632       _mesa_TexGenfv(GL_Q, GL_OBJECT_PLANE, unit->ObjectPlaneQ);
 633       _mesa_TexGenfv(GL_S, GL_EYE_PLANE, unit->EyePlaneS);
 634       _mesa_TexGenfv(GL_T, GL_EYE_PLANE, unit->EyePlaneT);
 635       _mesa_TexGenfv(GL_R, GL_EYE_PLANE, unit->EyePlaneR);
 636       _mesa_TexGenfv(GL_Q, GL_EYE_PLANE, unit->EyePlaneQ);
 637       if (ctx->Extensions.EXT_texture_lod_bias) {
 638          _mesa_TexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
 639                        GL_TEXTURE_LOD_BIAS_EXT, unit->LodBias);
 640       }
 641       if (ctx->Extensions.EXT_texture_env_combine ||
 642           ctx->Extensions.ARB_texture_env_combine) {
 643          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_EXT,
 644                        unit->CombineModeRGB);
 645          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_EXT,
 646                        unit->CombineModeA);
 647          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_EXT,
 648                        unit->CombineSourceRGB[0]);
 649          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_EXT,
 650                        unit->CombineSourceRGB[1]);
 651          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_EXT,
 652                        unit->CombineSourceRGB[2]);
 653          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_EXT,
 654                        unit->CombineSourceA[0]);
 655          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_EXT,
 656                        unit->CombineSourceA[1]);
 657          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA_EXT,
 658                        unit->CombineSourceA[2]);
 659          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_EXT,
 660                        unit->CombineOperandRGB[0]);
 661          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_EXT,
 662                        unit->CombineOperandRGB[1]);
 663          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB_EXT,
 664                        unit->CombineOperandRGB[2]);
 665          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_EXT,
 666                        unit->CombineOperandA[0]);
 667          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_EXT,
 668                        unit->CombineOperandA[1]);
 669          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA_EXT,
 670                        unit->CombineOperandA[2]);
 671          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_EXT,
 672                        1 << unit->CombineScaleShiftRGB);
 673          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE,
 674                        1 << unit->CombineScaleShiftA);
 675       }
 676
 677       /* Restore texture object state */
 678       for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
 679          GLenum target = 0;
 680          const struct gl_texture_object *obj = NULL;
 681          GLfloat bordColor[4];
 682
 683          switch (i) {
 684          case 0:
 685             target = GL_TEXTURE_1D;
 686             obj = &unit->Saved1D;
 687             break;
 688          case 1:
 689             target = GL_TEXTURE_2D;
 690             obj = &unit->Saved2D;
 691             break;
 692          case 2:
 693             target = GL_TEXTURE_3D;
 694             obj = &unit->Saved3D;
 695             break;
 696          case 3:
 697             if (!ctx->Extensions.ARB_texture_cube_map)
 698                continue;
 699             target = GL_TEXTURE_CUBE_MAP_ARB;
 700             obj = &unit->SavedCubeMap;
 701             break;
 702          case 4:
 703             if (!ctx->Extensions.NV_texture_rectangle)
 704                continue;
 705             target = GL_TEXTURE_RECTANGLE_NV;
 706             obj = &unit->SavedRect;
 707             break;
 708          default:
 709             ; /* silence warnings */
 710          }
 711
 712          _mesa_BindTexture(target, obj->Name);
 713
 714          bordColor[0] = CHAN_TO_FLOAT(obj->BorderColor[0]);
 715          bordColor[1] = CHAN_TO_FLOAT(obj->BorderColor[1]);
 716          bordColor[2] = CHAN_TO_FLOAT(obj->BorderColor[2]);
 717          bordColor[3] = CHAN_TO_FLOAT(obj->BorderColor[3]);
 718
 719          _mesa_TexParameterf(target, GL_TEXTURE_PRIORITY, obj->Priority);
 720          _mesa_TexParameterfv(target, GL_TEXTURE_BORDER_COLOR, bordColor);
 721          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, obj->WrapS);
 722          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, obj->WrapT);
 723          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, obj->WrapR);
 724          _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, obj->MinFilter);
 725          _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, obj->MagFilter);
 726          _mesa_TexParameterf(target, GL_TEXTURE_MIN_LOD, obj->MinLod);
 727          _mesa_TexParameterf(target, GL_TEXTURE_MAX_LOD, obj->MaxLod);
 728          _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, obj->BaseLevel);
 729          _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, obj->MaxLevel);
 730          if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 731             _mesa_TexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT,
 732                                 obj->MaxAnisotropy);
 733          }
 734          if (ctx->Extensions.SGIX_shadow) {
 735             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_SGIX,
 736                                 obj->CompareFlag);
 737             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_OPERATOR_SGIX,
 738                                 obj->CompareOperator);
 739          }
 740          if (ctx->Extensions.SGIX_shadow_ambient) {
 741             _mesa_TexParameterf(target, GL_SHADOW_AMBIENT_SGIX,
 742                                 obj->ShadowAmbient);
 743          }
 744
 745       }
 746    }
 747    _mesa_ActiveTextureARB(GL_TEXTURE0_ARB
 748                           + texAttrib->CurrentUnit);
 749
 750    /* "un-bump" the texture object reference counts.  We did that so they
 751     * wouldn't inadvertantly get deleted while they were still referenced
 752     * inside the attribute state stack.
 753     */
 754    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 755       ctx->Texture.Unit[u].Current1D->RefCount--;
 756       ctx->Texture.Unit[u].Current2D->RefCount--;
 757       ctx->Texture.Unit[u].Current3D->RefCount--;
 758       ctx->Texture.Unit[u].CurrentCubeMap->RefCount--;
 759       ctx->Texture.Unit[u].CurrentRect->RefCount--;
 760    }
 761 }
 762
 763
 764 /*
 765  * This function is kind of long just because we have to call a lot
 766  * of device driver functions to update device driver state.
 767  *
 768  * XXX As it is now, most of the pop-code calls immediate-mode Mesa functions
 769  * in order to restore GL state.  This isn't terribly efficient but it
 770  * ensures that dirty flags and any derived state gets updated correctly.
 771  * We could at least check if the value to restore equals the current value
 772  * and then skip the Mesa call.
 773  */
 774 void
 775 _mesa_PopAttrib(void)
 776 {
 777    struct gl_attrib_node *attr, *next;
 778    GET_CURRENT_CONTEXT(ctx);
 779    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 780
 781    if (ctx->AttribStackDepth == 0) {
 782       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
 783       return;
 784    }
 785
 786    ctx->AttribStackDepth--;
 787    attr = ctx->AttribStack[ctx->AttribStackDepth];
 788
 789    while (attr) {
 790
 791       if (MESA_VERBOSE & VERBOSE_API) {
 792          _mesa_debug(ctx, "glPopAttrib %s\n",
 793                      _mesa_lookup_enum_by_nr(attr->kind));
 794       }
 795
 796       switch (attr->kind) {
 797          case GL_ACCUM_BUFFER_BIT:
 798             {
 799                const struct gl_accum_attrib *accum;
 800                accum = (const struct gl_accum_attrib *) attr->data;
 801                _mesa_ClearAccum(accum->ClearColor[0],
 802                                 accum->ClearColor[1],
 803                                 accum->ClearColor[2],
 804                                 accum->ClearColor[3]);
 805             }
 806             break;
 807          case GL_COLOR_BUFFER_BIT:
 808             {
 809                const struct gl_colorbuffer_attrib *color;
 810                color = (const struct gl_colorbuffer_attrib *) attr->data;
 811                _mesa_ClearIndex((GLfloat) color->ClearIndex);
 812                _mesa_ClearColor(color->ClearColor[0],
 813                                 color->ClearColor[1],
 814                                 color->ClearColor[2],
 815                                 color->ClearColor[3]);
 816                _mesa_IndexMask(color->IndexMask);
 817                _mesa_ColorMask((GLboolean) (color->ColorMask[0] != 0),
 818                                (GLboolean) (color->ColorMask[1] != 0),
 819                                (GLboolean) (color->ColorMask[2] != 0),
 820                                (GLboolean) (color->ColorMask[3] != 0));
 821                _mesa_DrawBuffer(color->DrawBuffer);
 822                _mesa_set_enable(ctx, GL_ALPHA_TEST, color->AlphaEnabled);
 823                _mesa_AlphaFunc(color->AlphaFunc, color->AlphaRef);
 824                _mesa_set_enable(ctx, GL_BLEND, color->BlendEnabled);
 825                _mesa_BlendFuncSeparateEXT(color->BlendSrcRGB,
 826                                           color->BlendDstRGB,
 827                                           color->BlendSrcA,
 828                                           color->BlendDstA);
 829                _mesa_BlendEquation(color->BlendEquation);
 830                _mesa_BlendColor(color->BlendColor[0],
 831                                 color->BlendColor[1],
 832                                 color->BlendColor[2],
 833                                 color->BlendColor[3]);
 834                _mesa_LogicOp(color->LogicOp);
 835                _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP,
 836                                 color->ColorLogicOpEnabled);
 837                _mesa_set_enable(ctx, GL_INDEX_LOGIC_OP,
 838                                 color->IndexLogicOpEnabled);
 839                _mesa_set_enable(ctx, GL_DITHER, color->DitherFlag);
 840             }
 841             break;
 842          case GL_CURRENT_BIT:
 843             FLUSH_CURRENT( ctx, 0 );
 844             MEMCPY( &ctx->Current, attr->data,
 845                     sizeof(struct gl_current_attrib) );
 846             break;
 847          case GL_DEPTH_BUFFER_BIT:
 848             {
 849                const struct gl_depthbuffer_attrib *depth;
 850                depth = (const struct gl_depthbuffer_attrib *) attr->data;
 851                _mesa_DepthFunc(depth->Func);
 852                _mesa_ClearDepth(depth->Clear);
 853                _mesa_set_enable(ctx, GL_DEPTH_TEST, depth->Test);
 854                _mesa_DepthMask(depth->Mask);
 855                if (ctx->Extensions.HP_occlusion_test)
 856                   _mesa_set_enable(ctx, GL_OCCLUSION_TEST_HP,
 857                                    depth->OcclusionTest);
 858             }
 859             break;
 860          case GL_ENABLE_BIT:
 861             {
 862                const struct gl_enable_attrib *enable;
 863                enable = (const struct gl_enable_attrib *) attr->data;
 864                pop_enable_group(ctx, enable);
 865                ctx->NewState |= _NEW_ALL;
 866             }
 867             break;
 868          case GL_EVAL_BIT:
 869             MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
 870             ctx->NewState |= _NEW_EVAL;
 871             break;
 872          case GL_FOG_BIT:
 873             {
 874                const struct gl_fog_attrib *fog;
 875                fog = (const struct gl_fog_attrib *) attr->data;
 876                _mesa_set_enable(ctx, GL_FOG, fog->Enabled);
 877                _mesa_Fogfv(GL_FOG_COLOR, fog->Color);
 878                _mesa_Fogf(GL_FOG_DENSITY, fog->Density);
 879                _mesa_Fogf(GL_FOG_START, fog->Start);
 880                _mesa_Fogf(GL_FOG_END, fog->End);
 881                _mesa_Fogf(GL_FOG_INDEX, fog->Index);
 882                _mesa_Fogi(GL_FOG_MODE, fog->Mode);
 883             }
 884             break;
 885          case GL_HINT_BIT:
 886             {
 887                const struct gl_hint_attrib *hint;
 888                hint = (const struct gl_hint_attrib *) attr->data;
 889                _mesa_Hint(GL_PERSPECTIVE_CORRECTION_HINT,
 890                           hint->PerspectiveCorrection );
 891                _mesa_Hint(GL_POINT_SMOOTH_HINT, hint->PointSmooth);
 892                _mesa_Hint(GL_LINE_SMOOTH_HINT, hint->LineSmooth);
 893                _mesa_Hint(GL_POLYGON_SMOOTH_HINT, hint->PolygonSmooth);
 894                _mesa_Hint(GL_FOG_HINT, hint->Fog);
 895                _mesa_Hint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT,
 896                           hint->ClipVolumeClipping);
 897                if (ctx->Extensions.ARB_texture_compression)
 898                   _mesa_Hint(GL_TEXTURE_COMPRESSION_HINT_ARB,
 899                              hint->TextureCompression);
 900             }
 901             break;
 902          case GL_LIGHTING_BIT:
 903             {
 904                GLuint i;
 905                const struct gl_light_attrib *light;
 906                light = (const struct gl_light_attrib *) attr->data;
 907                /* lighting enable */
 908                _mesa_set_enable(ctx, GL_LIGHTING, light->Enabled);
 909                /* per-light state */
 910
 911                if (ctx->ModelviewMatrixStack.Top->flags & MAT_DIRTY_INVERSE)
 912                   _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
 913
 914                for (i = 0; i < MAX_LIGHTS; i++) {
 915                   GLenum lgt = (GLenum) (GL_LIGHT0 + i);
 916                   const struct gl_light *l = &light->Light[i];
 917                   GLfloat tmp[4];
 918                   _mesa_set_enable(ctx, lgt, l->Enabled);
 919                   _mesa_Lightfv( lgt, GL_AMBIENT, l->Ambient );
 920                   _mesa_Lightfv( lgt, GL_DIFFUSE, l->Diffuse );
 921                   _mesa_Lightfv( lgt, GL_SPECULAR, l->Specular );
 922                   TRANSFORM_POINT( tmp, ctx->ModelviewMatrixStack.Top->inv, l->EyePosition );
 923                   _mesa_Lightfv( lgt, GL_POSITION, tmp );
 924                   TRANSFORM_POINT( tmp, ctx->ModelviewMatrixStack.Top->m, l->EyeDirection );
 925                   _mesa_Lightfv( lgt, GL_SPOT_DIRECTION, tmp );
 926                   _mesa_Lightfv( lgt, GL_SPOT_EXPONENT, &l->SpotExponent );
 927                   _mesa_Lightfv( lgt, GL_SPOT_CUTOFF, &l->SpotCutoff );
 928                   _mesa_Lightfv( lgt, GL_CONSTANT_ATTENUATION,
 929                                  &l->ConstantAttenuation );
 930                   _mesa_Lightfv( lgt, GL_LINEAR_ATTENUATION,
 931                                  &l->LinearAttenuation );
 932                   _mesa_Lightfv( lgt, GL_QUADRATIC_ATTENUATION,
 933                                  &l->QuadraticAttenuation );
 934                }
 935                /* light model */
 936                _mesa_LightModelfv(GL_LIGHT_MODEL_AMBIENT,
 937                                   light->Model.Ambient);
 938                _mesa_LightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER,
 939                                  (GLfloat) light->Model.LocalViewer);
 940                _mesa_LightModelf(GL_LIGHT_MODEL_TWO_SIDE,
 941                                  (GLfloat) light->Model.TwoSide);
 942                _mesa_LightModelf(GL_LIGHT_MODEL_COLOR_CONTROL,
 943                                  (GLfloat) light->Model.ColorControl);
 944                /* materials */
 945                MEMCPY(ctx->Light.Material, light->Material,
 946                       2 * sizeof(struct gl_material));
 947                /* shade model */
 948                _mesa_ShadeModel(light->ShadeModel);
 949                /* color material */
 950                _mesa_ColorMaterial(light->ColorMaterialFace,
 951                                    light->ColorMaterialMode);
 952                _mesa_set_enable(ctx, GL_COLOR_MATERIAL,
 953                                 light->ColorMaterialEnabled);
 954             }
 955             break;
 956          case GL_LINE_BIT:
 957             {
 958                const struct gl_line_attrib *line;
 959                line = (const struct gl_line_attrib *) attr->data;
 960                _mesa_set_enable(ctx, GL_LINE_SMOOTH, line->SmoothFlag);
 961                _mesa_set_enable(ctx, GL_LINE_STIPPLE, line->StippleFlag);
 962                _mesa_LineStipple(line->StippleFactor, line->StipplePattern);
 963                _mesa_LineWidth(line->Width);
 964             }
 965             break;
 966          case GL_LIST_BIT:
 967             MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
 968             break;
 969          case GL_PIXEL_MODE_BIT:
 970             MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
 971             ctx->NewState |= _NEW_PIXEL;
 972             break;
 973          case GL_POINT_BIT:
 974             {
 975                const struct gl_point_attrib *point;
 976                point = (const struct gl_point_attrib *) attr->data;
 977                _mesa_PointSize(point->Size);
 978                _mesa_set_enable(ctx, GL_POINT_SMOOTH, point->SmoothFlag);
 979                if (ctx->Extensions.EXT_point_parameters) {
 980                   _mesa_PointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT,
 981                                             point->Params);
 982                   _mesa_PointParameterfEXT(GL_POINT_SIZE_MIN_EXT,
 983                                            point->MinSize);
 984                   _mesa_PointParameterfEXT(GL_POINT_SIZE_MAX_EXT,
 985                                            point->MaxSize);
 986                   _mesa_PointParameterfEXT(GL_POINT_FADE_THRESHOLD_SIZE_EXT,
 987                                            point->Threshold);
 988                }
 989                if (ctx->Extensions.NV_point_sprite) {
 990                   GLuint u;
 991                   for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 992                      _mesa_TexEnvi(GL_POINT_SPRITE_NV, GL_COORD_REPLACE_NV,
 993                                    (GLint) point->CoordReplace[u]);
 994                   }
 995                   _mesa_set_enable(ctx, GL_POINT_SPRITE_NV,point->PointSprite);
 996                   _mesa_PointParameteriNV(GL_POINT_SPRITE_R_MODE_NV,
 997                                           ctx->Point.SpriteRMode);
 998                }
 999             }
1000             break;
1001          case GL_POLYGON_BIT:
1002             {
1003                const struct gl_polygon_attrib *polygon;
1004                polygon = (const struct gl_polygon_attrib *) attr->data;
1005                _mesa_CullFace(polygon->CullFaceMode);
1006                _mesa_FrontFace(polygon->FrontFace);
1007                _mesa_PolygonMode(GL_FRONT, polygon->FrontMode);
1008                _mesa_PolygonMode(GL_BACK, polygon->BackMode);
1009                _mesa_PolygonOffset(polygon->OffsetFactor,
1010                                    polygon->OffsetUnits);
1011                _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, polygon->SmoothFlag);
1012                _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, polygon->StippleFlag);
1013                _mesa_set_enable(ctx, GL_CULL_FACE, polygon->CullFlag);
1014                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_POINT,
1015                                 polygon->OffsetPoint);
1016                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_LINE,
1017                                 polygon->OffsetLine);
1018                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL,
1019                                 polygon->OffsetFill);
1020             }
1021             break;
1022          case GL_POLYGON_STIPPLE_BIT:
1023             MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
1024             ctx->NewState |= _NEW_POLYGONSTIPPLE;
1025             if (ctx->Driver.PolygonStipple)
1026                ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data );
1027             break;
1028          case GL_SCISSOR_BIT:
1029             {
1030                const struct gl_scissor_attrib *scissor;
1031                scissor = (const struct gl_scissor_attrib *) attr->data;
1032                _mesa_Scissor(scissor->X, scissor->Y,
1033                              scissor->Width, scissor->Height);
1034                _mesa_set_enable(ctx, GL_SCISSOR_TEST, scissor->Enabled);
1035             }
1036             break;
1037          case GL_STENCIL_BUFFER_BIT:
1038             {
1039                const GLint face = 0; /* XXX stencil two side */
1040                const struct gl_stencil_attrib *stencil;
1041                stencil = (const struct gl_stencil_attrib *) attr->data;
1042                _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);
1043                _mesa_ClearStencil(stencil->Clear);
1044                _mesa_StencilFunc(stencil->Function[face], stencil->Ref[face],
1045                                  stencil->ValueMask[face]);
1046                _mesa_StencilMask(stencil->WriteMask[face]);
1047                _mesa_StencilOp(stencil->FailFunc[face],
1048                                stencil->ZFailFunc[face],
1049                                stencil->ZPassFunc[face]);
1050             }
1051             break;
1052          case GL_TRANSFORM_BIT:
1053             {
1054                GLuint i;
1055                const struct gl_transform_attrib *xform;
1056                xform = (const struct gl_transform_attrib *) attr->data;
1057                _mesa_MatrixMode(xform->MatrixMode);
1058
1059                if (ctx->ProjectionMatrixStack.Top->flags & MAT_DIRTY)
1060                   _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
1061
1062                /* restore clip planes */
1063                for (i = 0; i < MAX_CLIP_PLANES; i++) {
1064                   const GLuint mask = 1 << 1;
1065                   const GLfloat *eyePlane = xform->EyeUserPlane[i];
1066                   COPY_4V(ctx->Transform.EyeUserPlane[i], eyePlane);
1067                   if (xform->ClipPlanesEnabled & mask) {
1068                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE);
1069                   }
1070                   else {
1071                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_FALSE);
1072                   }
1073                   if (ctx->Driver.ClipPlane)
1074                      ctx->Driver.ClipPlane( ctx, GL_CLIP_PLANE0 + i, eyePlane );
1075                }
1076
1077                /* normalize/rescale */
1078                if (xform->Normalize != ctx->Transform.Normalize)
1079                   _mesa_set_enable(ctx, GL_NORMALIZE,ctx->Transform.Normalize);
1080                if (xform->RescaleNormals != ctx->Transform.RescaleNormals)
1081                   _mesa_set_enable(ctx, GL_RESCALE_NORMAL_EXT,
1082                                    ctx->Transform.RescaleNormals);
1083             }
1084             break;
1085          case GL_TEXTURE_BIT:
1086             /* Take care of texture object reference counters */
1087             {
1088                const struct gl_texture_attrib *texture;
1089                texture = (const struct gl_texture_attrib *) attr->data;
1090                pop_texture_group(ctx, texture);
1091                ctx->NewState |= _NEW_TEXTURE;
1092             }
1093             break;
1094          case GL_VIEWPORT_BIT:
1095             {
1096                const struct gl_viewport_attrib *vp;
1097                vp = (const struct gl_viewport_attrib *) attr->data;
1098                _mesa_Viewport(vp->X, vp->Y, vp->Width, vp->Height);
1099                _mesa_DepthRange(vp->Near, vp->Far);
1100             }
1101             break;
1102          case GL_MULTISAMPLE_BIT_ARB:
1103             {
1104                const struct gl_multisample_attrib *ms;
1105                ms = (const struct gl_multisample_attrib *) attr->data;
1106                _mesa_SampleCoverageARB(ms->SampleCoverageValue,
1107                                        ms->SampleCoverageInvert);
1108             }
1109             break;
1110
1111          default:
1112             _mesa_problem( ctx, "Bad attrib flag in PopAttrib");
1113             break;
1114       }
1115
1116       next = attr->next;
1117       FREE( attr->data );
1118       FREE( attr );
1119       attr = next;
1120    }
1121 }
1122
1123
1124 #define GL_CLIENT_PACK_BIT (1<<20)
1125 #define GL_CLIENT_UNPACK_BIT (1<<21)
1126
1127
1128 void
1129 _mesa_PushClientAttrib(GLbitfield mask)
1130 {
1131    struct gl_attrib_node *newnode;
1132    struct gl_attrib_node *head;
1133
1134    GET_CURRENT_CONTEXT(ctx);
1135    ASSERT_OUTSIDE_BEGIN_END(ctx);
1136
1137    if (ctx->ClientAttribStackDepth >= MAX_CLIENT_ATTRIB_STACK_DEPTH) {
1138       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
1139       return;
1140    }
1141
1142    /* Build linked list of attribute nodes which save all attribute */
1143    /* groups specified by the mask. */
1144    head = NULL;
1145
1146    if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
1147       struct gl_pixelstore_attrib *attr;
1148       /* packing attribs */
1149       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1150       MEMCPY( attr, &ctx->Pack, sizeof(struct gl_pixelstore_attrib) );
1151       newnode = new_attrib_node( GL_CLIENT_PACK_BIT );
1152       newnode->data = attr;
1153       newnode->next = head;
1154       head = newnode;
1155       /* unpacking attribs */
1156       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1157       MEMCPY( attr, &ctx->Unpack, sizeof(struct gl_pixelstore_attrib) );
1158       newnode = new_attrib_node( GL_CLIENT_UNPACK_BIT );
1159       newnode->data = attr;
1160       newnode->next = head;
1161       head = newnode;
1162    }
1163    if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
1164       struct gl_array_attrib *attr;
1165       attr = MALLOC_STRUCT( gl_array_attrib );
1166       MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
1167       newnode = new_attrib_node( GL_CLIENT_VERTEX_ARRAY_BIT );
1168       newnode->data = attr;
1169       newnode->next = head;
1170       head = newnode;
1171    }
1172
1173    ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
1174    ctx->ClientAttribStackDepth++;
1175 }
1176
1177
1178
1179
1180 void
1181 _mesa_PopClientAttrib(void)
1182 {
1183    struct gl_attrib_node *attr, *next;
1184
1185    GET_CURRENT_CONTEXT(ctx);
1186    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1187
1188    if (ctx->ClientAttribStackDepth == 0) {
1189       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
1190       return;
1191    }
1192
1193    ctx->ClientAttribStackDepth--;
1194    attr = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
1195
1196    while (attr) {
1197       switch (attr->kind) {
1198          case GL_CLIENT_PACK_BIT:
1199             MEMCPY( &ctx->Pack, attr->data,
1200                     sizeof(struct gl_pixelstore_attrib) );
1201             ctx->NewState |= _NEW_PACKUNPACK;
1202             break;
1203          case GL_CLIENT_UNPACK_BIT:
1204             MEMCPY( &ctx->Unpack, attr->data,
1205                     sizeof(struct gl_pixelstore_attrib) );
1206             ctx->NewState |= _NEW_PACKUNPACK;
1207             break;
1208          case GL_CLIENT_VERTEX_ARRAY_BIT:
1209             MEMCPY( &ctx->Array, attr->data,
1210                     sizeof(struct gl_array_attrib) );
1211             ctx->NewState |= _NEW_ARRAY;
1212             break;
1213          default:
1214             _mesa_problem( ctx, "Bad attrib flag in PopClientAttrib");
1215             break;
1216       }
1217
1218       next = attr->next;
1219       FREE( attr->data );
1220       FREE( attr );
1221       attr = next;
1222    }
1223 }