src/mesa/main/attrib.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.3
   4  *
   5  * Copyright (C) 1999-2004  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 "attrib.h"
  29 #include "blend.h"
  30 #include "buffers.h"
  31 #include "bufferobj.h"
  32 #include "colormac.h"
  33 #include "colortab.h"
  34 #include "context.h"
  35 #include "depth.h"
  36 #include "enable.h"
  37 #include "enums.h"
  38 #include "fog.h"
  39 #include "hint.h"
  40 #include "light.h"
  41 #include "lines.h"
  42 #include "matrix.h"
  43 #include "points.h"
  44 #include "polygon.h"
  45 #include "simple_list.h"
  46 #include "stencil.h"
  47 #include "texobj.h"
  48 #include "texstate.h"
  49 #include "mtypes.h"
  50 #include "math/m_xform.h"
  51
  52
  53 /*
  54  * Allocate a new attribute state node.  These nodes have a
  55  * "kind" value and a pointer to a struct of state data.
  56  */
  57 static struct gl_attrib_node *
  58 new_attrib_node( GLbitfield kind )
  59 {
  60    struct gl_attrib_node *an = MALLOC_STRUCT(gl_attrib_node);
  61    if (an) {
  62       an->kind = kind;
  63    }
  64    return an;
  65 }
  66
  67
  68 void GLAPIENTRY
  69 _mesa_PushAttrib(GLbitfield mask)
  70 {
  71    struct gl_attrib_node *newnode;
  72    struct gl_attrib_node *head;
  73
  74    GET_CURRENT_CONTEXT(ctx);
  75    ASSERT_OUTSIDE_BEGIN_END(ctx);
  76
  77    if (MESA_VERBOSE & VERBOSE_API)
  78       _mesa_debug(ctx, "glPushAttrib %x\n", (int) mask);
  79
  80    if (ctx->AttribStackDepth >= MAX_ATTRIB_STACK_DEPTH) {
  81       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
  82       return;
  83    }
  84
  85    /* Build linked list of attribute nodes which save all attribute */
  86    /* groups specified by the mask. */
  87    head = NULL;
  88
  89    if (mask & GL_ACCUM_BUFFER_BIT) {
  90       struct gl_accum_attrib *attr;
  91       attr = MALLOC_STRUCT( gl_accum_attrib );
  92       MEMCPY( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );
  93       newnode = new_attrib_node( GL_ACCUM_BUFFER_BIT );
  94       newnode->data = attr;
  95       newnode->next = head;
  96       head = newnode;
  97    }
  98
  99    if (mask & GL_COLOR_BUFFER_BIT) {
 100       struct gl_colorbuffer_attrib *attr;
 101       attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
 102       MEMCPY( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
 103       newnode = new_attrib_node( GL_COLOR_BUFFER_BIT );
 104       newnode->data = attr;
 105       newnode->next = head;
 106       head = newnode;
 107    }
 108
 109    if (mask & GL_CURRENT_BIT) {
 110       struct gl_current_attrib *attr;
 111       FLUSH_CURRENT( ctx, 0 );
 112       attr = MALLOC_STRUCT( gl_current_attrib );
 113       MEMCPY( attr, &ctx->Current, sizeof(struct gl_current_attrib) );
 114       newnode = new_attrib_node( GL_CURRENT_BIT );
 115       newnode->data = attr;
 116       newnode->next = head;
 117       head = newnode;
 118    }
 119
 120    if (mask & GL_DEPTH_BUFFER_BIT) {
 121       struct gl_depthbuffer_attrib *attr;
 122       attr = MALLOC_STRUCT( gl_depthbuffer_attrib );
 123       MEMCPY( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );
 124       newnode = new_attrib_node( GL_DEPTH_BUFFER_BIT );
 125       newnode->data = attr;
 126       newnode->next = head;
 127       head = newnode;
 128    }
 129
 130    if (mask & GL_ENABLE_BIT) {
 131       struct gl_enable_attrib *attr;
 132       GLuint i;
 133       attr = MALLOC_STRUCT( gl_enable_attrib );
 134       /* Copy enable flags from all other attributes into the enable struct. */
 135       attr->AlphaTest = ctx->Color.AlphaEnabled;
 136       attr->AutoNormal = ctx->Eval.AutoNormal;
 137       attr->Blend = ctx->Color.BlendEnabled;
 138       attr->ClipPlanes = ctx->Transform.ClipPlanesEnabled;
 139       attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;
 140       attr->ColorTable = ctx->Pixel.ColorTableEnabled;
 141       attr->PostColorMatrixColorTable = ctx->Pixel.PostColorMatrixColorTableEnabled;
 142       attr->PostConvolutionColorTable = ctx->Pixel.PostConvolutionColorTableEnabled;
 143       attr->Convolution1D = ctx->Pixel.Convolution1DEnabled;
 144       attr->Convolution2D = ctx->Pixel.Convolution2DEnabled;
 145       attr->Separable2D = ctx->Pixel.Separable2DEnabled;
 146       attr->CullFace = ctx->Polygon.CullFlag;
 147       attr->DepthTest = ctx->Depth.Test;
 148       attr->Dither = ctx->Color.DitherFlag;
 149       attr->Fog = ctx->Fog.Enabled;
 150       for (i=0;i<MAX_LIGHTS;i++) {
 151          attr->Light[i] = ctx->Light.Light[i].Enabled;
 152       }
 153       attr->Lighting = ctx->Light.Enabled;
 154       attr->LineSmooth = ctx->Line.SmoothFlag;
 155       attr->LineStipple = ctx->Line.StippleFlag;
 156       attr->Histogram = ctx->Pixel.HistogramEnabled;
 157       attr->MinMax = ctx->Pixel.MinMaxEnabled;
 158       attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
 159       attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
 160       attr->Map1Color4 = ctx->Eval.Map1Color4;
 161       attr->Map1Index = ctx->Eval.Map1Index;
 162       attr->Map1Normal = ctx->Eval.Map1Normal;
 163       attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
 164       attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
 165       attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
 166       attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
 167       attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
 168       attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
 169       MEMCPY(attr->Map1Attrib, ctx->Eval.Map1Attrib, sizeof(ctx->Eval.Map1Attrib));
 170       attr->Map2Color4 = ctx->Eval.Map2Color4;
 171       attr->Map2Index = ctx->Eval.Map2Index;
 172       attr->Map2Normal = ctx->Eval.Map2Normal;
 173       attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
 174       attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
 175       attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
 176       attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
 177       attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
 178       attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
 179       MEMCPY(attr->Map2Attrib, ctx->Eval.Map2Attrib, sizeof(ctx->Eval.Map2Attrib));
 180       attr->Normalize = ctx->Transform.Normalize;
 181       attr->RasterPositionUnclipped = ctx->Transform.RasterPositionUnclipped;
 182       attr->PixelTexture = ctx->Pixel.PixelTextureEnabled;
 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->MultisampleEnabled = ctx->Multisample.Enabled;
 194       attr->SampleAlphaToCoverage = ctx->Multisample.SampleAlphaToCoverage;
 195       attr->SampleAlphaToOne = ctx->Multisample.SampleAlphaToOne;
 196       attr->SampleCoverage = ctx->Multisample.SampleCoverage;
 197       attr->SampleCoverageInvert = ctx->Multisample.SampleCoverageInvert;
 198       for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 199          attr->Texture[i] = ctx->Texture.Unit[i].Enabled;
 200          attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
 201          attr->TextureColorTable[i] = ctx->Texture.Unit[i].ColorTableEnabled;
 202       }
 203       /* GL_NV_vertex_program */
 204       attr->VertexProgram = ctx->VertexProgram.Enabled;
 205       attr->VertexProgramPointSize = ctx->VertexProgram.PointSizeEnabled;
 206       attr->VertexProgramTwoSide = ctx->VertexProgram.TwoSideEnabled;
 207       newnode = new_attrib_node( GL_ENABLE_BIT );
 208       newnode->data = attr;
 209       newnode->next = head;
 210       head = newnode;
 211    }
 212
 213    if (mask & GL_EVAL_BIT) {
 214       struct gl_eval_attrib *attr;
 215       attr = MALLOC_STRUCT( gl_eval_attrib );
 216       MEMCPY( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
 217       newnode = new_attrib_node( GL_EVAL_BIT );
 218       newnode->data = attr;
 219       newnode->next = head;
 220       head = newnode;
 221    }
 222
 223    if (mask & GL_FOG_BIT) {
 224       struct gl_fog_attrib *attr;
 225       attr = MALLOC_STRUCT( gl_fog_attrib );
 226       MEMCPY( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
 227       newnode = new_attrib_node( GL_FOG_BIT );
 228       newnode->data = attr;
 229       newnode->next = head;
 230       head = newnode;
 231    }
 232
 233    if (mask & GL_HINT_BIT) {
 234       struct gl_hint_attrib *attr;
 235       attr = MALLOC_STRUCT( gl_hint_attrib );
 236       MEMCPY( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
 237       newnode = new_attrib_node( GL_HINT_BIT );
 238       newnode->data = attr;
 239       newnode->next = head;
 240       head = newnode;
 241    }
 242
 243    if (mask & GL_LIGHTING_BIT) {
 244       struct gl_light_attrib *attr;
 245       FLUSH_CURRENT(ctx, 0);    /* flush material changes */
 246       attr = MALLOC_STRUCT( gl_light_attrib );
 247       MEMCPY( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
 248       newnode = new_attrib_node( GL_LIGHTING_BIT );
 249       newnode->data = attr;
 250       newnode->next = head;
 251       head = newnode;
 252    }
 253
 254    if (mask & GL_LINE_BIT) {
 255       struct gl_line_attrib *attr;
 256       attr = MALLOC_STRUCT( gl_line_attrib );
 257       MEMCPY( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
 258       newnode = new_attrib_node( GL_LINE_BIT );
 259       newnode->data = attr;
 260       newnode->next = head;
 261       head = newnode;
 262    }
 263
 264    if (mask & GL_LIST_BIT) {
 265       struct gl_list_attrib *attr;
 266       attr = MALLOC_STRUCT( gl_list_attrib );
 267       MEMCPY( attr, &ctx->List, sizeof(struct gl_list_attrib) );
 268       newnode = new_attrib_node( GL_LIST_BIT );
 269       newnode->data = attr;
 270       newnode->next = head;
 271       head = newnode;
 272    }
 273
 274    if (mask & GL_PIXEL_MODE_BIT) {
 275       struct gl_pixel_attrib *attr;
 276       attr = MALLOC_STRUCT( gl_pixel_attrib );
 277       MEMCPY( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
 278       newnode = new_attrib_node( GL_PIXEL_MODE_BIT );
 279       newnode->data = attr;
 280       newnode->next = head;
 281       head = newnode;
 282    }
 283
 284    if (mask & GL_POINT_BIT) {
 285       struct gl_point_attrib *attr;
 286       attr = MALLOC_STRUCT( gl_point_attrib );
 287       MEMCPY( attr, &ctx->Point, sizeof(struct gl_point_attrib) );
 288       newnode = new_attrib_node( GL_POINT_BIT );
 289       newnode->data = attr;
 290       newnode->next = head;
 291       head = newnode;
 292    }
 293
 294    if (mask & GL_POLYGON_BIT) {
 295       struct gl_polygon_attrib *attr;
 296       attr = MALLOC_STRUCT( gl_polygon_attrib );
 297       MEMCPY( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );
 298       newnode = new_attrib_node( GL_POLYGON_BIT );
 299       newnode->data = attr;
 300       newnode->next = head;
 301       head = newnode;
 302    }
 303
 304    if (mask & GL_POLYGON_STIPPLE_BIT) {
 305       GLuint *stipple;
 306       stipple = (GLuint *) MALLOC( 32*sizeof(GLuint) );
 307       MEMCPY( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );
 308       newnode = new_attrib_node( GL_POLYGON_STIPPLE_BIT );
 309       newnode->data = stipple;
 310       newnode->next = head;
 311       head = newnode;
 312    }
 313
 314    if (mask & GL_SCISSOR_BIT) {
 315       struct gl_scissor_attrib *attr;
 316       attr = MALLOC_STRUCT( gl_scissor_attrib );
 317       MEMCPY( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );
 318       newnode = new_attrib_node( GL_SCISSOR_BIT );
 319       newnode->data = attr;
 320       newnode->next = head;
 321       head = newnode;
 322    }
 323
 324    if (mask & GL_STENCIL_BUFFER_BIT) {
 325       struct gl_stencil_attrib *attr;
 326       attr = MALLOC_STRUCT( gl_stencil_attrib );
 327       MEMCPY( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );
 328       newnode = new_attrib_node( GL_STENCIL_BUFFER_BIT );
 329       newnode->data = attr;
 330       newnode->next = head;
 331       head = newnode;
 332    }
 333
 334    if (mask & GL_TEXTURE_BIT) {
 335       struct gl_texture_attrib *attr;
 336       GLuint u;
 337       /* Bump the texture object reference counts so that they don't
 338        * inadvertantly get deleted.
 339        */
 340       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 341          ctx->Texture.Unit[u].Current1D->RefCount++;
 342          ctx->Texture.Unit[u].Current2D->RefCount++;
 343          ctx->Texture.Unit[u].Current3D->RefCount++;
 344          ctx->Texture.Unit[u].CurrentCubeMap->RefCount++;
 345          ctx->Texture.Unit[u].CurrentRect->RefCount++;
 346       }
 347       attr = MALLOC_STRUCT( gl_texture_attrib );
 348       MEMCPY( attr, &ctx->Texture, sizeof(struct gl_texture_attrib) );
 349       /* copy state of the currently bound texture objects */
 350       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 351          _mesa_copy_texture_object(&attr->Unit[u].Saved1D,
 352                                    attr->Unit[u].Current1D);
 353          _mesa_copy_texture_object(&attr->Unit[u].Saved2D,
 354                                    attr->Unit[u].Current2D);
 355          _mesa_copy_texture_object(&attr->Unit[u].Saved3D,
 356                                    attr->Unit[u].Current3D);
 357          _mesa_copy_texture_object(&attr->Unit[u].SavedCubeMap,
 358                                    attr->Unit[u].CurrentCubeMap);
 359          _mesa_copy_texture_object(&attr->Unit[u].SavedRect,
 360                                    attr->Unit[u].CurrentRect);
 361       }
 362       newnode = new_attrib_node( GL_TEXTURE_BIT );
 363       newnode->data = attr;
 364       newnode->next = head;
 365       head = newnode;
 366    }
 367
 368    if (mask & GL_TRANSFORM_BIT) {
 369       struct gl_transform_attrib *attr;
 370       attr = MALLOC_STRUCT( gl_transform_attrib );
 371       MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
 372       newnode = new_attrib_node( GL_TRANSFORM_BIT );
 373       newnode->data = attr;
 374       newnode->next = head;
 375       head = newnode;
 376    }
 377
 378    if (mask & GL_VIEWPORT_BIT) {
 379       struct gl_viewport_attrib *attr;
 380       attr = MALLOC_STRUCT( gl_viewport_attrib );
 381       MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
 382       newnode = new_attrib_node( GL_VIEWPORT_BIT );
 383       newnode->data = attr;
 384       newnode->next = head;
 385       head = newnode;
 386    }
 387
 388    /* GL_ARB_multisample */
 389    if (mask & GL_MULTISAMPLE_BIT_ARB) {
 390       struct gl_multisample_attrib *attr;
 391       attr = MALLOC_STRUCT( gl_multisample_attrib );
 392       MEMCPY( attr, &ctx->Multisample, sizeof(struct gl_multisample_attrib) );
 393       newnode = new_attrib_node( GL_MULTISAMPLE_BIT_ARB );
 394       newnode->data = attr;
 395       newnode->next = head;
 396       head = newnode;
 397    }
 398
 399    ctx->AttribStack[ctx->AttribStackDepth] = head;
 400    ctx->AttribStackDepth++;
 401 }
 402
 403
 404
 405 static void
 406 pop_enable_group(GLcontext *ctx, const struct gl_enable_attrib *enable)
 407 {
 408    GLuint i;
 409
 410 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)          \
 411         if ((VALUE) != (NEWVALUE)) {                    \
 412            _mesa_set_enable( ctx, ENUM, (NEWVALUE) );   \
 413         }
 414
 415    TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
 416    TEST_AND_UPDATE(ctx->Color.BlendEnabled, enable->Blend, GL_BLEND);
 417
 418    for (i=0;i<MAX_CLIP_PLANES;i++) {
 419       const GLuint mask = 1 << i;
 420       if ((ctx->Transform.ClipPlanesEnabled & mask) != (enable->ClipPlanes & mask))
 421           _mesa_set_enable(ctx, (GLenum) (GL_CLIP_PLANE0 + i),
 422                            (GLboolean) ((enable->ClipPlanes & mask) ? GL_TRUE : GL_FALSE));
 423    }
 424
 425    TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial,
 426                    GL_COLOR_MATERIAL);
 427    TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled, enable->ColorTable,
 428                    GL_COLOR_TABLE);
 429    TEST_AND_UPDATE(ctx->Pixel.PostColorMatrixColorTableEnabled,
 430                    enable->PostColorMatrixColorTable,
 431                    GL_POST_COLOR_MATRIX_COLOR_TABLE);
 432    TEST_AND_UPDATE(ctx->Pixel.PostConvolutionColorTableEnabled,
 433                    enable->PostConvolutionColorTable,
 434                    GL_POST_CONVOLUTION_COLOR_TABLE);
 435    TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
 436    TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
 437    TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
 438    TEST_AND_UPDATE(ctx->Pixel.Convolution1DEnabled, enable->Convolution1D,
 439                    GL_CONVOLUTION_1D);
 440    TEST_AND_UPDATE(ctx->Pixel.Convolution2DEnabled, enable->Convolution2D,
 441                    GL_CONVOLUTION_2D);
 442    TEST_AND_UPDATE(ctx->Pixel.Separable2DEnabled, enable->Separable2D,
 443                    GL_SEPARABLE_2D);
 444    TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
 445    TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
 446    TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
 447    TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple,
 448                    GL_LINE_STIPPLE);
 449    TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp,
 450                    GL_INDEX_LOGIC_OP);
 451    TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp,
 452                    GL_COLOR_LOGIC_OP);
 453
 454    TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
 455    TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
 456    TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
 457    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1,
 458                    GL_MAP1_TEXTURE_COORD_1);
 459    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2,
 460                    GL_MAP1_TEXTURE_COORD_2);
 461    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3,
 462                    GL_MAP1_TEXTURE_COORD_3);
 463    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4,
 464                    GL_MAP1_TEXTURE_COORD_4);
 465    TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3,
 466                    GL_MAP1_VERTEX_3);
 467    TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4,
 468                    GL_MAP1_VERTEX_4);
 469    for (i = 0; i < 16; i++) {
 470       TEST_AND_UPDATE(ctx->Eval.Map1Attrib[i], enable->Map1Attrib[i],
 471                       GL_MAP1_VERTEX_ATTRIB0_4_NV + i);
 472    }
 473
 474    TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
 475    TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
 476    TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
 477    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1,
 478                    GL_MAP2_TEXTURE_COORD_1);
 479    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2,
 480                    GL_MAP2_TEXTURE_COORD_2);
 481    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3,
 482                    GL_MAP2_TEXTURE_COORD_3);
 483    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4,
 484                    GL_MAP2_TEXTURE_COORD_4);
 485    TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3,
 486                    GL_MAP2_VERTEX_3);
 487    TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4,
 488                    GL_MAP2_VERTEX_4);
 489    for (i = 0; i < 16; i++) {
 490       TEST_AND_UPDATE(ctx->Eval.Map2Attrib[i], enable->Map2Attrib[i],
 491                       GL_MAP2_VERTEX_ATTRIB0_4_NV + i);
 492    }
 493
 494    TEST_AND_UPDATE(ctx->Eval.AutoNormal, enable->AutoNormal, GL_AUTO_NORMAL);
 495    TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
 496    TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals,
 497                    GL_RESCALE_NORMAL_EXT);
 498    TEST_AND_UPDATE(ctx->Transform.RasterPositionUnclipped,
 499                    enable->RasterPositionUnclipped,
 500                    GL_RASTER_POSITION_UNCLIPPED_IBM);
 501    TEST_AND_UPDATE(ctx->Pixel.PixelTextureEnabled, enable->PixelTexture,
 502                    GL_POINT_SMOOTH);
 503    TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth,
 504                    GL_POINT_SMOOTH);
 505    if (ctx->Extensions.NV_point_sprite || ctx->Extensions.ARB_point_sprite) {
 506       TEST_AND_UPDATE(ctx->Point.PointSprite, enable->PointSprite,
 507                       GL_POINT_SPRITE_NV);
 508    }
 509    TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint,
 510                    GL_POLYGON_OFFSET_POINT);
 511    TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine,
 512                    GL_POLYGON_OFFSET_LINE);
 513    TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill,
 514                    GL_POLYGON_OFFSET_FILL);
 515    TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth,
 516                    GL_POLYGON_SMOOTH);
 517    TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple,
 518                    GL_POLYGON_STIPPLE);
 519    TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
 520    TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
 521    /* XXX two-sided stencil */
 522    TEST_AND_UPDATE(ctx->Multisample.Enabled, enable->MultisampleEnabled,
 523                    GL_MULTISAMPLE_ARB);
 524    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToCoverage,
 525                    enable->SampleAlphaToCoverage,
 526                    GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
 527    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToOne,
 528                    enable->SampleAlphaToOne,
 529                    GL_SAMPLE_ALPHA_TO_ONE_ARB);
 530    TEST_AND_UPDATE(ctx->Multisample.SampleCoverage,
 531                    enable->SampleCoverage,
 532                    GL_SAMPLE_COVERAGE_ARB);
 533    TEST_AND_UPDATE(ctx->Multisample.SampleCoverageInvert,
 534                    enable->SampleCoverageInvert,
 535                    GL_SAMPLE_COVERAGE_INVERT_ARB);
 536    /* GL_NV_vertex_program */
 537    TEST_AND_UPDATE(ctx->VertexProgram.Enabled,
 538                    enable->VertexProgram,
 539                    GL_VERTEX_PROGRAM_NV);
 540    TEST_AND_UPDATE(ctx->VertexProgram.PointSizeEnabled,
 541                    enable->VertexProgramPointSize,
 542                    GL_VERTEX_PROGRAM_POINT_SIZE_NV);
 543    TEST_AND_UPDATE(ctx->VertexProgram.TwoSideEnabled,
 544                    enable->VertexProgramTwoSide,
 545                    GL_VERTEX_PROGRAM_TWO_SIDE_NV);
 546
 547 #undef TEST_AND_UPDATE
 548
 549    /* texture unit enables */
 550    for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
 551       if (ctx->Texture.Unit[i].Enabled != enable->Texture[i]) {
 552          ctx->Texture.Unit[i].Enabled = enable->Texture[i];
 553          if (ctx->Driver.Enable) {
 554             if (ctx->Driver.ActiveTexture) {
 555                (*ctx->Driver.ActiveTexture)(ctx, i);
 556             }
 557             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D,
 558                              (GLboolean) (enable->Texture[i] & TEXTURE_1D_BIT) );
 559             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D,
 560                              (GLboolean) (enable->Texture[i] & TEXTURE_2D_BIT) );
 561             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D,
 562                              (GLboolean) (enable->Texture[i] & TEXTURE_3D_BIT) );
 563             if (ctx->Extensions.ARB_texture_cube_map)
 564                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_CUBE_MAP_ARB,
 565                           (GLboolean) (enable->Texture[i] & TEXTURE_CUBE_BIT) );
 566             if (ctx->Extensions.NV_texture_rectangle)
 567                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_RECTANGLE_NV,
 568                           (GLboolean) (enable->Texture[i] & TEXTURE_RECT_BIT) );
 569          }
 570       }
 571
 572       if (ctx->Texture.Unit[i].TexGenEnabled != enable->TexGen[i]) {
 573          ctx->Texture.Unit[i].TexGenEnabled = enable->TexGen[i];
 574          if (ctx->Driver.Enable) {
 575             if (ctx->Driver.ActiveTexture) {
 576                (*ctx->Driver.ActiveTexture)(ctx, i);
 577             }
 578             if (enable->TexGen[i] & S_BIT)
 579                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_TRUE);
 580             else
 581                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_FALSE);
 582             if (enable->TexGen[i] & T_BIT)
 583                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_TRUE);
 584             else
 585                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_FALSE);
 586             if (enable->TexGen[i] & R_BIT)
 587                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_TRUE);
 588             else
 589                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_FALSE);
 590             if (enable->TexGen[i] & Q_BIT)
 591                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
 592             else
 593                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
 594          }
 595       }
 596
 597       /* GL_SGI_texture_color_table */
 598       ctx->Texture.Unit[i].ColorTableEnabled = enable->TextureColorTable[i];
 599    }
 600
 601    if (ctx->Driver.ActiveTexture) {
 602       (*ctx->Driver.ActiveTexture)(ctx, ctx->Texture.CurrentUnit);
 603    }
 604 }
 605
 606
 607 static void
 608 pop_texture_group(GLcontext *ctx, const struct gl_texture_attrib *texAttrib)
 609 {
 610    GLuint u;
 611
 612    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 613       const struct gl_texture_unit *unit = &texAttrib->Unit[u];
 614       GLuint i;
 615
 616       _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + u);
 617       _mesa_set_enable(ctx, GL_TEXTURE_1D,
 618               (GLboolean) (unit->Enabled & TEXTURE_1D_BIT ? GL_TRUE : GL_FALSE));
 619       _mesa_set_enable(ctx, GL_TEXTURE_2D,
 620               (GLboolean) (unit->Enabled & TEXTURE_2D_BIT ? GL_TRUE : GL_FALSE));
 621       _mesa_set_enable(ctx, GL_TEXTURE_3D,
 622               (GLboolean) (unit->Enabled & TEXTURE_3D_BIT ? GL_TRUE : GL_FALSE));
 623       if (ctx->Extensions.ARB_texture_cube_map) {
 624          _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP_ARB,
 625              (GLboolean) (unit->Enabled & TEXTURE_CUBE_BIT ? GL_TRUE : GL_FALSE));
 626       }
 627       if (ctx->Extensions.NV_texture_rectangle) {
 628          _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_NV,
 629              (GLboolean) (unit->Enabled & TEXTURE_RECT_BIT ? GL_TRUE : GL_FALSE));
 630       }
 631       if (ctx->Extensions.SGI_texture_color_table) {
 632          _mesa_set_enable(ctx, GL_TEXTURE_COLOR_TABLE_SGI,
 633                           unit->ColorTableEnabled);
 634       }
 635       _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->EnvMode);
 636       _mesa_TexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, unit->EnvColor);
 637       _mesa_TexGeni(GL_S, GL_TEXTURE_GEN_MODE, unit->GenModeS);
 638       _mesa_TexGeni(GL_T, GL_TEXTURE_GEN_MODE, unit->GenModeT);
 639       _mesa_TexGeni(GL_R, GL_TEXTURE_GEN_MODE, unit->GenModeR);
 640       _mesa_TexGeni(GL_Q, GL_TEXTURE_GEN_MODE, unit->GenModeQ);
 641       _mesa_TexGenfv(GL_S, GL_OBJECT_PLANE, unit->ObjectPlaneS);
 642       _mesa_TexGenfv(GL_T, GL_OBJECT_PLANE, unit->ObjectPlaneT);
 643       _mesa_TexGenfv(GL_R, GL_OBJECT_PLANE, unit->ObjectPlaneR);
 644       _mesa_TexGenfv(GL_Q, GL_OBJECT_PLANE, unit->ObjectPlaneQ);
 645       _mesa_TexGenfv(GL_S, GL_EYE_PLANE, unit->EyePlaneS);
 646       _mesa_TexGenfv(GL_T, GL_EYE_PLANE, unit->EyePlaneT);
 647       _mesa_TexGenfv(GL_R, GL_EYE_PLANE, unit->EyePlaneR);
 648       _mesa_TexGenfv(GL_Q, GL_EYE_PLANE, unit->EyePlaneQ);
 649       if (ctx->Extensions.EXT_texture_lod_bias) {
 650          _mesa_TexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
 651                        GL_TEXTURE_LOD_BIAS_EXT, unit->LodBias);
 652       }
 653       if (ctx->Extensions.EXT_texture_env_combine ||
 654           ctx->Extensions.ARB_texture_env_combine) {
 655          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB,
 656                        unit->Combine.ModeRGB);
 657          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA,
 658                        unit->Combine.ModeA);
 659          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB,
 660                        unit->Combine.SourceRGB[0]);
 661          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB,
 662                        unit->Combine.SourceRGB[1]);
 663          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB,
 664                        unit->Combine.SourceRGB[2]);
 665          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA,
 666                        unit->Combine.SourceA[0]);
 667          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA,
 668                        unit->Combine.SourceA[1]);
 669          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA,
 670                        unit->Combine.SourceA[2]);
 671          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB,
 672                        unit->Combine.OperandRGB[0]);
 673          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB,
 674                        unit->Combine.OperandRGB[1]);
 675          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB,
 676                        unit->Combine.OperandRGB[2]);
 677          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA,
 678                        unit->Combine.OperandA[0]);
 679          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA,
 680                        unit->Combine.OperandA[1]);
 681          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA,
 682                        unit->Combine.OperandA[2]);
 683          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE,
 684                        1 << unit->Combine.ScaleShiftRGB);
 685          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE,
 686                        1 << unit->Combine.ScaleShiftA);
 687       }
 688
 689       /* Restore texture object state */
 690       for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
 691          GLenum target = 0;
 692          const struct gl_texture_object *obj = NULL;
 693          GLfloat bordColor[4];
 694
 695          switch (i) {
 696          case 0:
 697             target = GL_TEXTURE_1D;
 698             obj = &unit->Saved1D;
 699             break;
 700          case 1:
 701             target = GL_TEXTURE_2D;
 702             obj = &unit->Saved2D;
 703             break;
 704          case 2:
 705             target = GL_TEXTURE_3D;
 706             obj = &unit->Saved3D;
 707             break;
 708          case 3:
 709             if (!ctx->Extensions.ARB_texture_cube_map)
 710                continue;
 711             target = GL_TEXTURE_CUBE_MAP_ARB;
 712             obj = &unit->SavedCubeMap;
 713             break;
 714          case 4:
 715             if (!ctx->Extensions.NV_texture_rectangle)
 716                continue;
 717             target = GL_TEXTURE_RECTANGLE_NV;
 718             obj = &unit->SavedRect;
 719             break;
 720          default:
 721             ; /* silence warnings */
 722          }
 723
 724          _mesa_BindTexture(target, obj->Name);
 725
 726          bordColor[0] = CHAN_TO_FLOAT(obj->BorderColor[0]);
 727          bordColor[1] = CHAN_TO_FLOAT(obj->BorderColor[1]);
 728          bordColor[2] = CHAN_TO_FLOAT(obj->BorderColor[2]);
 729          bordColor[3] = CHAN_TO_FLOAT(obj->BorderColor[3]);
 730
 731          _mesa_TexParameterf(target, GL_TEXTURE_PRIORITY, obj->Priority);
 732          _mesa_TexParameterfv(target, GL_TEXTURE_BORDER_COLOR, bordColor);
 733          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, obj->WrapS);
 734          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, obj->WrapT);
 735          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, obj->WrapR);
 736          _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, obj->MinFilter);
 737          _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, obj->MagFilter);
 738          _mesa_TexParameterf(target, GL_TEXTURE_MIN_LOD, obj->MinLod);
 739          _mesa_TexParameterf(target, GL_TEXTURE_MAX_LOD, obj->MaxLod);
 740          _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, obj->BaseLevel);
 741          _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, obj->MaxLevel);
 742          if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 743             _mesa_TexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT,
 744                                 obj->MaxAnisotropy);
 745          }
 746          if (ctx->Extensions.SGIX_shadow) {
 747             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_SGIX,
 748                                 obj->CompareFlag);
 749             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_OPERATOR_SGIX,
 750                                 obj->CompareOperator);
 751          }
 752          if (ctx->Extensions.SGIX_shadow_ambient) {
 753             _mesa_TexParameterf(target, GL_SHADOW_AMBIENT_SGIX,
 754                                 obj->ShadowAmbient);
 755          }
 756
 757       }
 758    }
 759    _mesa_ActiveTextureARB(GL_TEXTURE0_ARB
 760                           + texAttrib->CurrentUnit);
 761
 762    /* "un-bump" the texture object reference counts.  We did that so they
 763     * wouldn't inadvertantly get deleted while they were still referenced
 764     * inside the attribute state stack.
 765     */
 766    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 767       ctx->Texture.Unit[u].Current1D->RefCount--;
 768       ctx->Texture.Unit[u].Current2D->RefCount--;
 769       ctx->Texture.Unit[u].Current3D->RefCount--;
 770       ctx->Texture.Unit[u].CurrentCubeMap->RefCount--;
 771       ctx->Texture.Unit[u].CurrentRect->RefCount--;
 772    }
 773 }
 774
 775
 776 /*
 777  * This function is kind of long just because we have to call a lot
 778  * of device driver functions to update device driver state.
 779  *
 780  * XXX As it is now, most of the pop-code calls immediate-mode Mesa functions
 781  * in order to restore GL state.  This isn't terribly efficient but it
 782  * ensures that dirty flags and any derived state gets updated correctly.
 783  * We could at least check if the value to restore equals the current value
 784  * and then skip the Mesa call.
 785  */
 786 void GLAPIENTRY
 787 _mesa_PopAttrib(void)
 788 {
 789    struct gl_attrib_node *attr, *next;
 790    GET_CURRENT_CONTEXT(ctx);
 791    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 792
 793    if (ctx->AttribStackDepth == 0) {
 794       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
 795       return;
 796    }
 797
 798    ctx->AttribStackDepth--;
 799    attr = ctx->AttribStack[ctx->AttribStackDepth];
 800
 801    while (attr) {
 802
 803       if (MESA_VERBOSE & VERBOSE_API) {
 804          _mesa_debug(ctx, "glPopAttrib %s\n",
 805                      _mesa_lookup_enum_by_nr(attr->kind));
 806       }
 807
 808       switch (attr->kind) {
 809          case GL_ACCUM_BUFFER_BIT:
 810             {
 811                const struct gl_accum_attrib *accum;
 812                accum = (const struct gl_accum_attrib *) attr->data;
 813                _mesa_ClearAccum(accum->ClearColor[0],
 814                                 accum->ClearColor[1],
 815                                 accum->ClearColor[2],
 816                                 accum->ClearColor[3]);
 817             }
 818             break;
 819          case GL_COLOR_BUFFER_BIT:
 820             {
 821                const struct gl_colorbuffer_attrib *color;
 822                color = (const struct gl_colorbuffer_attrib *) attr->data;
 823                _mesa_ClearIndex((GLfloat) color->ClearIndex);
 824                _mesa_ClearColor(color->ClearColor[0],
 825                                 color->ClearColor[1],
 826                                 color->ClearColor[2],
 827                                 color->ClearColor[3]);
 828                _mesa_IndexMask(color->IndexMask);
 829                _mesa_ColorMask((GLboolean) (color->ColorMask[0] != 0),
 830                                (GLboolean) (color->ColorMask[1] != 0),
 831                                (GLboolean) (color->ColorMask[2] != 0),
 832                                (GLboolean) (color->ColorMask[3] != 0));
 833                _mesa_DrawBuffersARB(ctx->Const.MaxDrawBuffers,
 834                                     color->DrawBuffer);
 835                _mesa_set_enable(ctx, GL_ALPHA_TEST, color->AlphaEnabled);
 836                _mesa_AlphaFunc(color->AlphaFunc, color->AlphaRef);
 837                _mesa_set_enable(ctx, GL_BLEND, color->BlendEnabled);
 838                _mesa_BlendFuncSeparateEXT(color->BlendSrcRGB,
 839                                           color->BlendDstRGB,
 840                                           color->BlendSrcA,
 841                                           color->BlendDstA);
 842                /* This special case is because glBlendEquationSeparateEXT
 843                 * cannot take GL_LOGIC_OP as a parameter.
 844                 */
 845                if ( color->BlendEquationRGB == color->BlendEquationA ) {
 846                   _mesa_BlendEquation(color->BlendEquationRGB);
 847                }
 848                else {
 849                   _mesa_BlendEquationSeparateEXT(color->BlendEquationRGB,
 850                                                  color->BlendEquationA);
 851                }
 852                _mesa_BlendColor(color->BlendColor[0],
 853                                 color->BlendColor[1],
 854                                 color->BlendColor[2],
 855                                 color->BlendColor[3]);
 856                _mesa_LogicOp(color->LogicOp);
 857                _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP,
 858                                 color->ColorLogicOpEnabled);
 859                _mesa_set_enable(ctx, GL_INDEX_LOGIC_OP,
 860                                 color->IndexLogicOpEnabled);
 861                _mesa_set_enable(ctx, GL_DITHER, color->DitherFlag);
 862             }
 863             break;
 864          case GL_CURRENT_BIT:
 865             FLUSH_CURRENT( ctx, 0 );
 866             MEMCPY( &ctx->Current, attr->data,
 867                     sizeof(struct gl_current_attrib) );
 868             break;
 869          case GL_DEPTH_BUFFER_BIT:
 870             {
 871                const struct gl_depthbuffer_attrib *depth;
 872                depth = (const struct gl_depthbuffer_attrib *) attr->data;
 873                _mesa_DepthFunc(depth->Func);
 874                _mesa_ClearDepth(depth->Clear);
 875                _mesa_set_enable(ctx, GL_DEPTH_TEST, depth->Test);
 876                _mesa_DepthMask(depth->Mask);
 877                if (ctx->Extensions.HP_occlusion_test)
 878                   _mesa_set_enable(ctx, GL_OCCLUSION_TEST_HP,
 879                                    depth->OcclusionTest);
 880             }
 881             break;
 882          case GL_ENABLE_BIT:
 883             {
 884                const struct gl_enable_attrib *enable;
 885                enable = (const struct gl_enable_attrib *) attr->data;
 886                pop_enable_group(ctx, enable);
 887                ctx->NewState |= _NEW_ALL;
 888             }
 889             break;
 890          case GL_EVAL_BIT:
 891             MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
 892             ctx->NewState |= _NEW_EVAL;
 893             break;
 894          case GL_FOG_BIT:
 895             {
 896                const struct gl_fog_attrib *fog;
 897                fog = (const struct gl_fog_attrib *) attr->data;
 898                _mesa_set_enable(ctx, GL_FOG, fog->Enabled);
 899                _mesa_Fogfv(GL_FOG_COLOR, fog->Color);
 900                _mesa_Fogf(GL_FOG_DENSITY, fog->Density);
 901                _mesa_Fogf(GL_FOG_START, fog->Start);
 902                _mesa_Fogf(GL_FOG_END, fog->End);
 903                _mesa_Fogf(GL_FOG_INDEX, fog->Index);
 904                _mesa_Fogi(GL_FOG_MODE, fog->Mode);
 905             }
 906             break;
 907          case GL_HINT_BIT:
 908             {
 909                const struct gl_hint_attrib *hint;
 910                hint = (const struct gl_hint_attrib *) attr->data;
 911                _mesa_Hint(GL_PERSPECTIVE_CORRECTION_HINT,
 912                           hint->PerspectiveCorrection );
 913                _mesa_Hint(GL_POINT_SMOOTH_HINT, hint->PointSmooth);
 914                _mesa_Hint(GL_LINE_SMOOTH_HINT, hint->LineSmooth);
 915                _mesa_Hint(GL_POLYGON_SMOOTH_HINT, hint->PolygonSmooth);
 916                _mesa_Hint(GL_FOG_HINT, hint->Fog);
 917                _mesa_Hint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT,
 918                           hint->ClipVolumeClipping);
 919                if (ctx->Extensions.ARB_texture_compression)
 920                   _mesa_Hint(GL_TEXTURE_COMPRESSION_HINT_ARB,
 921                              hint->TextureCompression);
 922             }
 923             break;
 924          case GL_LIGHTING_BIT:
 925             {
 926                GLuint i;
 927                const struct gl_light_attrib *light;
 928                light = (const struct gl_light_attrib *) attr->data;
 929                /* lighting enable */
 930                _mesa_set_enable(ctx, GL_LIGHTING, light->Enabled);
 931                /* per-light state */
 932                if (ctx->ModelviewMatrixStack.Top->flags & MAT_DIRTY_INVERSE)
 933                   _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
 934
 935                for (i = 0; i < MAX_LIGHTS; i++) {
 936                   GLenum lgt = (GLenum) (GL_LIGHT0 + i);
 937                   const struct gl_light *l = &light->Light[i];
 938                   GLfloat tmp[4];
 939                   _mesa_set_enable(ctx, lgt, l->Enabled);
 940                   _mesa_Lightfv( lgt, GL_AMBIENT, l->Ambient );
 941                   _mesa_Lightfv( lgt, GL_DIFFUSE, l->Diffuse );
 942                   _mesa_Lightfv( lgt, GL_SPECULAR, l->Specular );
 943                   TRANSFORM_POINT( tmp, ctx->ModelviewMatrixStack.Top->inv, l->EyePosition );
 944                   _mesa_Lightfv( lgt, GL_POSITION, tmp );
 945                   TRANSFORM_POINT( tmp, ctx->ModelviewMatrixStack.Top->m, l->EyeDirection );
 946                   _mesa_Lightfv( lgt, GL_SPOT_DIRECTION, tmp );
 947                   _mesa_Lightfv( lgt, GL_SPOT_EXPONENT, &l->SpotExponent );
 948                   _mesa_Lightfv( lgt, GL_SPOT_CUTOFF, &l->SpotCutoff );
 949                   _mesa_Lightfv( lgt, GL_CONSTANT_ATTENUATION,
 950                                  &l->ConstantAttenuation );
 951                   _mesa_Lightfv( lgt, GL_LINEAR_ATTENUATION,
 952                                  &l->LinearAttenuation );
 953                   _mesa_Lightfv( lgt, GL_QUADRATIC_ATTENUATION,
 954                                  &l->QuadraticAttenuation );
 955                }
 956                /* light model */
 957                _mesa_LightModelfv(GL_LIGHT_MODEL_AMBIENT,
 958                                   light->Model.Ambient);
 959                _mesa_LightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER,
 960                                  (GLfloat) light->Model.LocalViewer);
 961                _mesa_LightModelf(GL_LIGHT_MODEL_TWO_SIDE,
 962                                  (GLfloat) light->Model.TwoSide);
 963                _mesa_LightModelf(GL_LIGHT_MODEL_COLOR_CONTROL,
 964                                  (GLfloat) light->Model.ColorControl);
 965                /* materials */
 966                MEMCPY(&ctx->Light.Material, &light->Material,
 967                       sizeof(struct gl_material));
 968                /* shade model */
 969                _mesa_ShadeModel(light->ShadeModel);
 970                /* color material */
 971                _mesa_ColorMaterial(light->ColorMaterialFace,
 972                                    light->ColorMaterialMode);
 973                _mesa_set_enable(ctx, GL_COLOR_MATERIAL,
 974                                 light->ColorMaterialEnabled);
 975             }
 976             break;
 977          case GL_LINE_BIT:
 978             {
 979                const struct gl_line_attrib *line;
 980                line = (const struct gl_line_attrib *) attr->data;
 981                _mesa_set_enable(ctx, GL_LINE_SMOOTH, line->SmoothFlag);
 982                _mesa_set_enable(ctx, GL_LINE_STIPPLE, line->StippleFlag);
 983                _mesa_LineStipple(line->StippleFactor, line->StipplePattern);
 984                _mesa_LineWidth(line->Width);
 985             }
 986             break;
 987          case GL_LIST_BIT:
 988             MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
 989             break;
 990          case GL_PIXEL_MODE_BIT:
 991             MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
 992             ctx->NewState |= _NEW_PIXEL;
 993             break;
 994          case GL_POINT_BIT:
 995             {
 996                const struct gl_point_attrib *point;
 997                point = (const struct gl_point_attrib *) attr->data;
 998                _mesa_PointSize(point->Size);
 999                _mesa_set_enable(ctx, GL_POINT_SMOOTH, point->SmoothFlag);
1000                if (ctx->Extensions.EXT_point_parameters) {
1001                   _mesa_PointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT,
1002                                             point->Params);
1003                   _mesa_PointParameterfEXT(GL_POINT_SIZE_MIN_EXT,
1004                                            point->MinSize);
1005                   _mesa_PointParameterfEXT(GL_POINT_SIZE_MAX_EXT,
1006                                            point->MaxSize);
1007                   _mesa_PointParameterfEXT(GL_POINT_FADE_THRESHOLD_SIZE_EXT,
1008                                            point->Threshold);
1009                }
1010                if (ctx->Extensions.NV_point_sprite
1011                    || ctx->Extensions.ARB_point_sprite) {
1012                   GLuint u;
1013                   for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
1014                      _mesa_TexEnvi(GL_POINT_SPRITE_NV, GL_COORD_REPLACE_NV,
1015                                    (GLint) point->CoordReplace[u]);
1016                   }
1017                   _mesa_set_enable(ctx, GL_POINT_SPRITE_NV,point->PointSprite);
1018                   _mesa_PointParameteriNV(GL_POINT_SPRITE_R_MODE_NV,
1019                                           ctx->Point.SpriteRMode);
1020                   _mesa_PointParameterfEXT(GL_POINT_SPRITE_COORD_ORIGIN,
1021                                            (GLfloat)ctx->Point.SpriteOrigin);
1022                }
1023             }
1024             break;
1025          case GL_POLYGON_BIT:
1026             {
1027                const struct gl_polygon_attrib *polygon;
1028                polygon = (const struct gl_polygon_attrib *) attr->data;
1029                _mesa_CullFace(polygon->CullFaceMode);
1030                _mesa_FrontFace(polygon->FrontFace);
1031                _mesa_PolygonMode(GL_FRONT, polygon->FrontMode);
1032                _mesa_PolygonMode(GL_BACK, polygon->BackMode);
1033                _mesa_PolygonOffset(polygon->OffsetFactor,
1034                                    polygon->OffsetUnits);
1035                _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, polygon->SmoothFlag);
1036                _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, polygon->StippleFlag);
1037                _mesa_set_enable(ctx, GL_CULL_FACE, polygon->CullFlag);
1038                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_POINT,
1039                                 polygon->OffsetPoint);
1040                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_LINE,
1041                                 polygon->OffsetLine);
1042                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL,
1043                                 polygon->OffsetFill);
1044             }
1045             break;
1046          case GL_POLYGON_STIPPLE_BIT:
1047             MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
1048             ctx->NewState |= _NEW_POLYGONSTIPPLE;
1049             if (ctx->Driver.PolygonStipple)
1050                ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data );
1051             break;
1052          case GL_SCISSOR_BIT:
1053             {
1054                const struct gl_scissor_attrib *scissor;
1055                scissor = (const struct gl_scissor_attrib *) attr->data;
1056                _mesa_Scissor(scissor->X, scissor->Y,
1057                              scissor->Width, scissor->Height);
1058                _mesa_set_enable(ctx, GL_SCISSOR_TEST, scissor->Enabled);
1059             }
1060             break;
1061          case GL_STENCIL_BUFFER_BIT:
1062             {
1063                GLint face;
1064                const struct gl_stencil_attrib *stencil;
1065                stencil = (const struct gl_stencil_attrib *) attr->data;
1066                _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);
1067                _mesa_ClearStencil(stencil->Clear);
1068                face = stencil->ActiveFace;
1069                if (ctx->Extensions.EXT_stencil_two_side) {
1070                   _mesa_set_enable(ctx, GL_STENCIL_TEST_TWO_SIDE_EXT, stencil->TestTwoSide);
1071                   face ^= 1;
1072                }
1073                do {
1074                   _mesa_ActiveStencilFaceEXT(face);
1075                   _mesa_StencilFunc(stencil->Function[face], stencil->Ref[face],
1076                                     stencil->ValueMask[face]);
1077                   _mesa_StencilMask(stencil->WriteMask[face]);
1078                   _mesa_StencilOp(stencil->FailFunc[face],
1079                                   stencil->ZFailFunc[face],
1080                                   stencil->ZPassFunc[face]);
1081                   face ^= 1;
1082                } while (face != (stencil->ActiveFace ^ 1));
1083             }
1084             break;
1085          case GL_TRANSFORM_BIT:
1086             {
1087                GLuint i;
1088                const struct gl_transform_attrib *xform;
1089                xform = (const struct gl_transform_attrib *) attr->data;
1090                _mesa_MatrixMode(xform->MatrixMode);
1091                if (ctx->ProjectionMatrixStack.Top->flags & MAT_DIRTY)
1092                   _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
1093
1094                /* restore clip planes */
1095                for (i = 0; i < MAX_CLIP_PLANES; i++) {
1096                   const GLuint mask = 1 << 1;
1097                   const GLfloat *eyePlane = xform->EyeUserPlane[i];
1098                   COPY_4V(ctx->Transform.EyeUserPlane[i], eyePlane);
1099                   if (xform->ClipPlanesEnabled & mask) {
1100                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE);
1101                   }
1102                   else {
1103                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_FALSE);
1104                   }
1105                   if (ctx->Driver.ClipPlane)
1106                      ctx->Driver.ClipPlane( ctx, GL_CLIP_PLANE0 + i, eyePlane );
1107                }
1108
1109                /* normalize/rescale */
1110                if (xform->Normalize != ctx->Transform.Normalize)
1111                   _mesa_set_enable(ctx, GL_NORMALIZE,ctx->Transform.Normalize);
1112                if (xform->RescaleNormals != ctx->Transform.RescaleNormals)
1113                   _mesa_set_enable(ctx, GL_RESCALE_NORMAL_EXT,
1114                                    ctx->Transform.RescaleNormals);
1115             }
1116             break;
1117          case GL_TEXTURE_BIT:
1118             /* Take care of texture object reference counters */
1119             {
1120                const struct gl_texture_attrib *texture;
1121                texture = (const struct gl_texture_attrib *) attr->data;
1122                pop_texture_group(ctx, texture);
1123                ctx->NewState |= _NEW_TEXTURE;
1124             }
1125             break;
1126          case GL_VIEWPORT_BIT:
1127             {
1128                const struct gl_viewport_attrib *vp;
1129                vp = (const struct gl_viewport_attrib *) attr->data;
1130                _mesa_Viewport(vp->X, vp->Y, vp->Width, vp->Height);
1131                _mesa_DepthRange(vp->Near, vp->Far);
1132             }
1133             break;
1134          case GL_MULTISAMPLE_BIT_ARB:
1135             {
1136                const struct gl_multisample_attrib *ms;
1137                ms = (const struct gl_multisample_attrib *) attr->data;
1138                _mesa_SampleCoverageARB(ms->SampleCoverageValue,
1139                                        ms->SampleCoverageInvert);
1140             }
1141             break;
1142
1143          default:
1144             _mesa_problem( ctx, "Bad attrib flag in PopAttrib");
1145             break;
1146       }
1147
1148       next = attr->next;
1149       FREE( attr->data );
1150       FREE( attr );
1151       attr = next;
1152    }
1153 }
1154
1155
1156 /**
1157  * Helper for incrementing/decrementing vertex buffer object reference
1158  * counts when pushing/popping the GL_CLIENT_VERTEX_ARRAY_BIT attribute group.
1159  */
1160 static void
1161 adjust_buffer_object_ref_counts(struct gl_array_attrib *array, GLint step)
1162 {
1163    GLuint i;
1164    array->Vertex.BufferObj->RefCount += step;
1165    array->Normal.BufferObj->RefCount += step;
1166    array->Color.BufferObj->RefCount += step;
1167    array->SecondaryColor.BufferObj->RefCount += step;
1168    array->FogCoord.BufferObj->RefCount += step;
1169    array->Index.BufferObj->RefCount += step;
1170    array->EdgeFlag.BufferObj->RefCount += step;
1171    for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++)
1172       array->TexCoord[i].BufferObj->RefCount += step;
1173    for (i = 0; i < VERT_ATTRIB_MAX; i++)
1174       array->VertexAttrib[i].BufferObj->RefCount += step;
1175
1176    array->ArrayBufferObj->RefCount += step;
1177    array->ElementArrayBufferObj->RefCount += step;
1178 }
1179
1180
1181 #define GL_CLIENT_PACK_BIT (1<<20)
1182 #define GL_CLIENT_UNPACK_BIT (1<<21)
1183
1184
1185 void GLAPIENTRY
1186 _mesa_PushClientAttrib(GLbitfield mask)
1187 {
1188    struct gl_attrib_node *newnode;
1189    struct gl_attrib_node *head;
1190
1191    GET_CURRENT_CONTEXT(ctx);
1192    ASSERT_OUTSIDE_BEGIN_END(ctx);
1193
1194    if (ctx->ClientAttribStackDepth >= MAX_CLIENT_ATTRIB_STACK_DEPTH) {
1195       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
1196       return;
1197    }
1198
1199    /* Build linked list of attribute nodes which save all attribute */
1200    /* groups specified by the mask. */
1201    head = NULL;
1202
1203    if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
1204       struct gl_pixelstore_attrib *attr;
1205 #if FEATURE_EXT_pixel_buffer_object
1206       ctx->Pack.BufferObj->RefCount++;
1207       ctx->Unpack.BufferObj->RefCount++;
1208 #endif
1209       /* packing attribs */
1210       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1211       MEMCPY( attr, &ctx->Pack, sizeof(struct gl_pixelstore_attrib) );
1212       newnode = new_attrib_node( GL_CLIENT_PACK_BIT );
1213       newnode->data = attr;
1214       newnode->next = head;
1215       head = newnode;
1216       /* unpacking attribs */
1217       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1218       MEMCPY( attr, &ctx->Unpack, sizeof(struct gl_pixelstore_attrib) );
1219       newnode = new_attrib_node( GL_CLIENT_UNPACK_BIT );
1220       newnode->data = attr;
1221       newnode->next = head;
1222       head = newnode;
1223    }
1224    if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
1225       struct gl_array_attrib *attr;
1226       attr = MALLOC_STRUCT( gl_array_attrib );
1227       MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
1228       newnode = new_attrib_node( GL_CLIENT_VERTEX_ARRAY_BIT );
1229       newnode->data = attr;
1230       newnode->next = head;
1231       head = newnode;
1232       /* bump reference counts on buffer objects */
1233       adjust_buffer_object_ref_counts(&ctx->Array, 1);
1234    }
1235
1236    ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
1237    ctx->ClientAttribStackDepth++;
1238 }
1239
1240
1241
1242
1243 void GLAPIENTRY
1244 _mesa_PopClientAttrib(void)
1245 {
1246    struct gl_attrib_node *attr, *next;
1247
1248    GET_CURRENT_CONTEXT(ctx);
1249    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1250
1251    if (ctx->ClientAttribStackDepth == 0) {
1252       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
1253       return;
1254    }
1255
1256    ctx->ClientAttribStackDepth--;
1257    attr = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
1258
1259    while (attr) {
1260       switch (attr->kind) {
1261          case GL_CLIENT_PACK_BIT:
1262 #if FEATURE_EXT_pixel_buffer_object
1263             ctx->Pack.BufferObj->RefCount--;
1264             if (ctx->Pack.BufferObj->RefCount <= 0) {
1265                _mesa_remove_buffer_object( ctx, ctx->Pack.BufferObj );
1266                (*ctx->Driver.DeleteBuffer)( ctx, ctx->Pack.BufferObj );
1267             }
1268 #endif
1269             MEMCPY( &ctx->Pack, attr->data,
1270                     sizeof(struct gl_pixelstore_attrib) );
1271             ctx->NewState |= _NEW_PACKUNPACK;
1272             break;
1273          case GL_CLIENT_UNPACK_BIT:
1274 #if FEATURE_EXT_pixel_buffer_object
1275             ctx->Unpack.BufferObj->RefCount--;
1276             if (ctx->Unpack.BufferObj->RefCount <= 0) {
1277                _mesa_remove_buffer_object( ctx, ctx->Unpack.BufferObj );
1278                (*ctx->Driver.DeleteBuffer)( ctx, ctx->Unpack.BufferObj );
1279             }
1280 #endif
1281             MEMCPY( &ctx->Unpack, attr->data,
1282                     sizeof(struct gl_pixelstore_attrib) );
1283             ctx->NewState |= _NEW_PACKUNPACK;
1284             break;
1285          case GL_CLIENT_VERTEX_ARRAY_BIT:
1286             adjust_buffer_object_ref_counts(&ctx->Array, -1);
1287             MEMCPY( &ctx->Array, attr->data,
1288                     sizeof(struct gl_array_attrib) );
1289             /* decrement reference counts on buffer objects */
1290             ctx->NewState |= _NEW_ARRAY;
1291             break;
1292          default:
1293             _mesa_problem( ctx, "Bad attrib flag in PopClientAttrib");
1294             break;
1295       }
1296
1297       next = attr->next;
1298       FREE( attr->data );
1299       FREE( attr );
1300       attr = next;
1301    }
1302 }
1303
1304
1305 void _mesa_init_attrib( GLcontext *ctx )
1306 {
1307    /* Renderer and client attribute stacks */
1308    ctx->AttribStackDepth = 0;
1309    ctx->ClientAttribStackDepth = 0;
1310 }