src/mesa/main/attrib.c

   1 /* $Id: attrib.c,v 1.63 2002/04/01 17:03:38 brianp 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
  76 /*
  77  * Copy texture object state from one texture object to another.
  78  */
  79 static void
  80 copy_texobj_state( struct gl_texture_object *dest,
  81                    const struct gl_texture_object *src )
  82 {
  83    dest->Name = src->Name;
  84    /*
  85    dest->Dimensions = src->Dimensions;
  86    */
  87    dest->Priority = src->Priority;
  88    dest->BorderColor[0] = src->BorderColor[0];
  89    dest->BorderColor[1] = src->BorderColor[1];
  90    dest->BorderColor[2] = src->BorderColor[2];
  91    dest->BorderColor[3] = src->BorderColor[3];
  92    dest->WrapS = src->WrapS;
  93    dest->WrapT = src->WrapT;
  94    dest->WrapR = src->WrapR;
  95    dest->MinFilter = src->MinFilter;
  96    dest->MagFilter = src->MagFilter;
  97    dest->MinLod = src->MinLod;
  98    dest->MaxLod = src->MaxLod;
  99    dest->BaseLevel = src->BaseLevel;
 100    dest->MaxLevel = src->MaxLevel;
 101    dest->MaxAnisotropy = src->MaxAnisotropy;
 102    dest->CompareFlag = src->CompareFlag;
 103    dest->CompareOperator = src->CompareOperator;
 104    dest->ShadowAmbient = src->ShadowAmbient;
 105    dest->_MaxLevel = src->_MaxLevel;
 106    dest->_MaxLambda = src->_MaxLambda;
 107    dest->Palette = src->Palette;
 108    dest->Complete = src->Complete;
 109 }
 110
 111
 112
 113 void
 114 _mesa_PushAttrib(GLbitfield mask)
 115 {
 116    struct gl_attrib_node *newnode;
 117    struct gl_attrib_node *head;
 118
 119    GET_CURRENT_CONTEXT(ctx);
 120    ASSERT_OUTSIDE_BEGIN_END(ctx);
 121
 122    if (MESA_VERBOSE&VERBOSE_API)
 123       fprintf(stderr, "glPushAttrib %x\n", (int)mask);
 124
 125    if (ctx->AttribStackDepth >= MAX_ATTRIB_STACK_DEPTH) {
 126       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
 127       return;
 128    }
 129
 130    /* Build linked list of attribute nodes which save all attribute */
 131    /* groups specified by the mask. */
 132    head = NULL;
 133
 134    if (mask & GL_ACCUM_BUFFER_BIT) {
 135       struct gl_accum_attrib *attr;
 136       attr = MALLOC_STRUCT( gl_accum_attrib );
 137       MEMCPY( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );
 138       newnode = new_attrib_node( GL_ACCUM_BUFFER_BIT );
 139       newnode->data = attr;
 140       newnode->next = head;
 141       head = newnode;
 142    }
 143
 144    if (mask & GL_COLOR_BUFFER_BIT) {
 145       struct gl_colorbuffer_attrib *attr;
 146       attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
 147       MEMCPY( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
 148       newnode = new_attrib_node( GL_COLOR_BUFFER_BIT );
 149       newnode->data = attr;
 150       newnode->next = head;
 151       head = newnode;
 152    }
 153
 154    if (mask & GL_CURRENT_BIT) {
 155       struct gl_current_attrib *attr;
 156       FLUSH_CURRENT( ctx, 0 );
 157       attr = MALLOC_STRUCT( gl_current_attrib );
 158       MEMCPY( attr, &ctx->Current, sizeof(struct gl_current_attrib) );
 159       newnode = new_attrib_node( GL_CURRENT_BIT );
 160       newnode->data = attr;
 161       newnode->next = head;
 162       head = newnode;
 163    }
 164
 165    if (mask & GL_DEPTH_BUFFER_BIT) {
 166       struct gl_depthbuffer_attrib *attr;
 167       attr = MALLOC_STRUCT( gl_depthbuffer_attrib );
 168       MEMCPY( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );
 169       newnode = new_attrib_node( GL_DEPTH_BUFFER_BIT );
 170       newnode->data = attr;
 171       newnode->next = head;
 172       head = newnode;
 173    }
 174
 175    if (mask & GL_ENABLE_BIT) {
 176       struct gl_enable_attrib *attr;
 177       GLuint i;
 178       attr = MALLOC_STRUCT( gl_enable_attrib );
 179       /* Copy enable flags from all other attributes into the enable struct. */
 180       attr->AlphaTest = ctx->Color.AlphaEnabled;
 181       attr->AutoNormal = ctx->Eval.AutoNormal;
 182       attr->Blend = ctx->Color.BlendEnabled;
 183       attr->ClipPlanes = ctx->Transform.ClipPlanesEnabled;
 184       attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;
 185       attr->Convolution1D = ctx->Pixel.Convolution1DEnabled;
 186       attr->Convolution2D = ctx->Pixel.Convolution2DEnabled;
 187       attr->Separable2D = ctx->Pixel.Separable2DEnabled;
 188       attr->CullFace = ctx->Polygon.CullFlag;
 189       attr->DepthTest = ctx->Depth.Test;
 190       attr->Dither = ctx->Color.DitherFlag;
 191       attr->Fog = ctx->Fog.Enabled;
 192       for (i=0;i<MAX_LIGHTS;i++) {
 193          attr->Light[i] = ctx->Light.Light[i].Enabled;
 194       }
 195       attr->Lighting = ctx->Light.Enabled;
 196       attr->LineSmooth = ctx->Line.SmoothFlag;
 197       attr->LineStipple = ctx->Line.StippleFlag;
 198       attr->Histogram = ctx->Pixel.HistogramEnabled;
 199       attr->MinMax = ctx->Pixel.MinMaxEnabled;
 200       attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
 201       attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
 202       attr->Map1Color4 = ctx->Eval.Map1Color4;
 203       attr->Map1Index = ctx->Eval.Map1Index;
 204       attr->Map1Normal = ctx->Eval.Map1Normal;
 205       attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
 206       attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
 207       attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
 208       attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
 209       attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
 210       attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
 211       MEMCPY(attr->Map1Attrib, ctx->Eval.Map1Attrib, sizeof(ctx->Eval.Map1Attrib));
 212       attr->Map2Color4 = ctx->Eval.Map2Color4;
 213       attr->Map2Index = ctx->Eval.Map2Index;
 214       attr->Map2Normal = ctx->Eval.Map2Normal;
 215       attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
 216       attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
 217       attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
 218       attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
 219       attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
 220       attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
 221       MEMCPY(attr->Map2Attrib, ctx->Eval.Map2Attrib, sizeof(ctx->Eval.Map2Attrib));
 222       attr->Normalize = ctx->Transform.Normalize;
 223       attr->RasterPositionUnclipped = ctx->Transform.RasterPositionUnclipped;
 224       attr->PixelTexture = ctx->Pixel.PixelTextureEnabled;
 225       attr->PointSmooth = ctx->Point.SmoothFlag;
 226       attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;
 227       attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;
 228       attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;
 229       attr->PolygonSmooth = ctx->Polygon.SmoothFlag;
 230       attr->PolygonStipple = ctx->Polygon.StippleFlag;
 231       attr->RescaleNormals = ctx->Transform.RescaleNormals;
 232       attr->Scissor = ctx->Scissor.Enabled;
 233       attr->Stencil = ctx->Stencil.Enabled;
 234       attr->MultisampleEnabled = ctx->Multisample.Enabled;
 235       attr->SampleAlphaToCoverage = ctx->Multisample.SampleAlphaToCoverage;
 236       attr->SampleAlphaToOne = ctx->Multisample.SampleAlphaToOne;
 237       attr->SampleCoverage = ctx->Multisample.SampleCoverage;
 238       attr->SampleCoverageInvert = ctx->Multisample.SampleCoverageInvert;
 239       for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 240          attr->Texture[i] = ctx->Texture.Unit[i].Enabled;
 241          attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
 242       }
 243       /* GL_NV_vertex_program */
 244       attr->VertexProgram = ctx->VertexProgram.Enabled;
 245       attr->VertexProgramPointSize = ctx->VertexProgram.PointSizeEnabled;
 246       attr->VertexProgramTwoSide = ctx->VertexProgram.TwoSideEnabled;
 247       newnode = new_attrib_node( GL_ENABLE_BIT );
 248       newnode->data = attr;
 249       newnode->next = head;
 250       head = newnode;
 251    }
 252
 253    if (mask & GL_EVAL_BIT) {
 254       struct gl_eval_attrib *attr;
 255       attr = MALLOC_STRUCT( gl_eval_attrib );
 256       MEMCPY( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
 257       newnode = new_attrib_node( GL_EVAL_BIT );
 258       newnode->data = attr;
 259       newnode->next = head;
 260       head = newnode;
 261    }
 262
 263    if (mask & GL_FOG_BIT) {
 264       struct gl_fog_attrib *attr;
 265       attr = MALLOC_STRUCT( gl_fog_attrib );
 266       MEMCPY( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
 267       newnode = new_attrib_node( GL_FOG_BIT );
 268       newnode->data = attr;
 269       newnode->next = head;
 270       head = newnode;
 271    }
 272
 273    if (mask & GL_HINT_BIT) {
 274       struct gl_hint_attrib *attr;
 275       attr = MALLOC_STRUCT( gl_hint_attrib );
 276       MEMCPY( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
 277       newnode = new_attrib_node( GL_HINT_BIT );
 278       newnode->data = attr;
 279       newnode->next = head;
 280       head = newnode;
 281    }
 282
 283    if (mask & GL_LIGHTING_BIT) {
 284       struct gl_light_attrib *attr;
 285       FLUSH_CURRENT(ctx, 0);    /* flush material changes */
 286       attr = MALLOC_STRUCT( gl_light_attrib );
 287       MEMCPY( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
 288       newnode = new_attrib_node( GL_LIGHTING_BIT );
 289       newnode->data = attr;
 290       newnode->next = head;
 291       head = newnode;
 292    }
 293
 294    if (mask & GL_LINE_BIT) {
 295       struct gl_line_attrib *attr;
 296       attr = MALLOC_STRUCT( gl_line_attrib );
 297       MEMCPY( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
 298       newnode = new_attrib_node( GL_LINE_BIT );
 299       newnode->data = attr;
 300       newnode->next = head;
 301       head = newnode;
 302    }
 303
 304    if (mask & GL_LIST_BIT) {
 305       struct gl_list_attrib *attr;
 306       attr = MALLOC_STRUCT( gl_list_attrib );
 307       MEMCPY( attr, &ctx->List, sizeof(struct gl_list_attrib) );
 308       newnode = new_attrib_node( GL_LIST_BIT );
 309       newnode->data = attr;
 310       newnode->next = head;
 311       head = newnode;
 312    }
 313
 314    if (mask & GL_PIXEL_MODE_BIT) {
 315       struct gl_pixel_attrib *attr;
 316       attr = MALLOC_STRUCT( gl_pixel_attrib );
 317       MEMCPY( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
 318       newnode = new_attrib_node( GL_PIXEL_MODE_BIT );
 319       newnode->data = attr;
 320       newnode->next = head;
 321       head = newnode;
 322    }
 323
 324    if (mask & GL_POINT_BIT) {
 325       struct gl_point_attrib *attr;
 326       attr = MALLOC_STRUCT( gl_point_attrib );
 327       MEMCPY( attr, &ctx->Point, sizeof(struct gl_point_attrib) );
 328       newnode = new_attrib_node( GL_POINT_BIT );
 329       newnode->data = attr;
 330       newnode->next = head;
 331       head = newnode;
 332    }
 333
 334    if (mask & GL_POLYGON_BIT) {
 335       struct gl_polygon_attrib *attr;
 336       attr = MALLOC_STRUCT( gl_polygon_attrib );
 337       MEMCPY( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );
 338       newnode = new_attrib_node( GL_POLYGON_BIT );
 339       newnode->data = attr;
 340       newnode->next = head;
 341       head = newnode;
 342    }
 343
 344    if (mask & GL_POLYGON_STIPPLE_BIT) {
 345       GLuint *stipple;
 346       stipple = (GLuint *) MALLOC( 32*sizeof(GLuint) );
 347       MEMCPY( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );
 348       newnode = new_attrib_node( GL_POLYGON_STIPPLE_BIT );
 349       newnode->data = stipple;
 350       newnode->next = head;
 351       head = newnode;
 352    }
 353
 354    if (mask & GL_SCISSOR_BIT) {
 355       struct gl_scissor_attrib *attr;
 356       attr = MALLOC_STRUCT( gl_scissor_attrib );
 357       MEMCPY( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );
 358       newnode = new_attrib_node( GL_SCISSOR_BIT );
 359       newnode->data = attr;
 360       newnode->next = head;
 361       head = newnode;
 362    }
 363
 364    if (mask & GL_STENCIL_BUFFER_BIT) {
 365       struct gl_stencil_attrib *attr;
 366       attr = MALLOC_STRUCT( gl_stencil_attrib );
 367       MEMCPY( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );
 368       newnode = new_attrib_node( GL_STENCIL_BUFFER_BIT );
 369       newnode->data = attr;
 370       newnode->next = head;
 371       head = newnode;
 372    }
 373
 374    if (mask & GL_TEXTURE_BIT) {
 375       struct gl_texture_attrib *attr;
 376       GLuint u;
 377       /* Bump the texture object reference counts so that they don't
 378        * inadvertantly get deleted.
 379        */
 380       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 381          ctx->Texture.Unit[u].Current1D->RefCount++;
 382          ctx->Texture.Unit[u].Current2D->RefCount++;
 383          ctx->Texture.Unit[u].Current3D->RefCount++;
 384          ctx->Texture.Unit[u].CurrentCubeMap->RefCount++;
 385       }
 386       attr = MALLOC_STRUCT( gl_texture_attrib );
 387       MEMCPY( attr, &ctx->Texture, sizeof(struct gl_texture_attrib) );
 388       /* copy state of the currently bound texture objects */
 389       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 390          copy_texobj_state(&attr->Unit[u].Saved1D, attr->Unit[u].Current1D);
 391          copy_texobj_state(&attr->Unit[u].Saved2D, attr->Unit[u].Current2D);
 392          copy_texobj_state(&attr->Unit[u].Saved3D, attr->Unit[u].Current3D);
 393          copy_texobj_state(&attr->Unit[u].SavedCubeMap, attr->Unit[u].CurrentCubeMap);
 394       }
 395       newnode = new_attrib_node( GL_TEXTURE_BIT );
 396       newnode->data = attr;
 397       newnode->next = head;
 398       head = newnode;
 399    }
 400
 401    if (mask & GL_TRANSFORM_BIT) {
 402       struct gl_transform_attrib *attr;
 403       attr = MALLOC_STRUCT( gl_transform_attrib );
 404       MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
 405       newnode = new_attrib_node( GL_TRANSFORM_BIT );
 406       newnode->data = attr;
 407       newnode->next = head;
 408       head = newnode;
 409    }
 410
 411    if (mask & GL_VIEWPORT_BIT) {
 412       struct gl_viewport_attrib *attr;
 413       attr = MALLOC_STRUCT( gl_viewport_attrib );
 414       MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
 415       newnode = new_attrib_node( GL_VIEWPORT_BIT );
 416       newnode->data = attr;
 417       newnode->next = head;
 418       head = newnode;
 419    }
 420
 421    /* GL_ARB_multisample */
 422    if (mask & GL_MULTISAMPLE_BIT_ARB) {
 423       struct gl_multisample_attrib *attr;
 424       attr = MALLOC_STRUCT( gl_multisample_attrib );
 425       MEMCPY( attr, &ctx->Multisample, sizeof(struct gl_multisample_attrib) );
 426       newnode = new_attrib_node( GL_MULTISAMPLE_BIT_ARB );
 427       newnode->data = attr;
 428       newnode->next = head;
 429       head = newnode;
 430    }
 431
 432    ctx->AttribStack[ctx->AttribStackDepth] = head;
 433    ctx->AttribStackDepth++;
 434 }
 435
 436
 437
 438 static void
 439 pop_enable_group(GLcontext *ctx, const struct gl_enable_attrib *enable)
 440 {
 441    GLuint i;
 442
 443 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)          \
 444         if ((VALUE) != (NEWVALUE)) {                    \
 445            _mesa_set_enable( ctx, ENUM, (NEWVALUE) );   \
 446         }
 447
 448    TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
 449    TEST_AND_UPDATE(ctx->Color.BlendEnabled, enable->Blend, GL_BLEND);
 450
 451    for (i=0;i<MAX_CLIP_PLANES;i++) {
 452       const GLuint mask = 1 << i;
 453       if ((ctx->Transform.ClipPlanesEnabled & mask) != (enable->ClipPlanes & mask))
 454          _mesa_set_enable(ctx, (GLenum) (GL_CLIP_PLANE0 + i),
 455                           (enable->ClipPlanes & mask) ? GL_TRUE : GL_FALSE);
 456    }
 457
 458    TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial,
 459                    GL_COLOR_MATERIAL);
 460    TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
 461    TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
 462    TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
 463    TEST_AND_UPDATE(ctx->Pixel.Convolution1DEnabled, enable->Convolution1D,
 464                    GL_CONVOLUTION_1D);
 465    TEST_AND_UPDATE(ctx->Pixel.Convolution2DEnabled, enable->Convolution2D,
 466                    GL_CONVOLUTION_2D);
 467    TEST_AND_UPDATE(ctx->Pixel.Separable2DEnabled, enable->Separable2D,
 468                    GL_SEPARABLE_2D);
 469    TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
 470    TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
 471    TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
 472    TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple,
 473                    GL_LINE_STIPPLE);
 474    TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp,
 475                    GL_INDEX_LOGIC_OP);
 476    TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp,
 477                    GL_COLOR_LOGIC_OP);
 478
 479    TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
 480    TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
 481    TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
 482    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1,
 483                    GL_MAP1_TEXTURE_COORD_1);
 484    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2,
 485                    GL_MAP1_TEXTURE_COORD_2);
 486    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3,
 487                    GL_MAP1_TEXTURE_COORD_3);
 488    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4,
 489                    GL_MAP1_TEXTURE_COORD_4);
 490    TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3,
 491                    GL_MAP1_VERTEX_3);
 492    TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4,
 493                    GL_MAP1_VERTEX_4);
 494    for (i = 0; i < 16; i++) {
 495       TEST_AND_UPDATE(ctx->Eval.Map1Attrib[i], enable->Map1Attrib[i],
 496                       GL_MAP1_VERTEX_ATTRIB0_4_NV + i);
 497    }
 498
 499    TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
 500    TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
 501    TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
 502    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1,
 503                    GL_MAP2_TEXTURE_COORD_1);
 504    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2,
 505                    GL_MAP2_TEXTURE_COORD_2);
 506    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3,
 507                    GL_MAP2_TEXTURE_COORD_3);
 508    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4,
 509                    GL_MAP2_TEXTURE_COORD_4);
 510    TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3,
 511                    GL_MAP2_VERTEX_3);
 512    TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4,
 513                    GL_MAP2_VERTEX_4);
 514    for (i = 0; i < 16; i++) {
 515       TEST_AND_UPDATE(ctx->Eval.Map2Attrib[i], enable->Map2Attrib[i],
 516                       GL_MAP2_VERTEX_ATTRIB0_4_NV + i);
 517    }
 518
 519    TEST_AND_UPDATE(ctx->Eval.AutoNormal, enable->AutoNormal, GL_AUTO_NORMAL);
 520    TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
 521    TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals,
 522                    GL_RESCALE_NORMAL_EXT);
 523    TEST_AND_UPDATE(ctx->Transform.RasterPositionUnclipped,
 524                    enable->RasterPositionUnclipped,
 525                    GL_RASTER_POSITION_UNCLIPPED_IBM);
 526    TEST_AND_UPDATE(ctx->Pixel.PixelTextureEnabled, enable->PixelTexture,
 527                    GL_POINT_SMOOTH);
 528    TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth,
 529                    GL_POINT_SMOOTH);
 530    TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint,
 531                    GL_POLYGON_OFFSET_POINT);
 532    TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine,
 533                    GL_POLYGON_OFFSET_LINE);
 534    TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill,
 535                    GL_POLYGON_OFFSET_FILL);
 536    TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth,
 537                    GL_POLYGON_SMOOTH);
 538    TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple,
 539                    GL_POLYGON_STIPPLE);
 540    TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
 541    TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
 542    TEST_AND_UPDATE(ctx->Multisample.Enabled, enable->MultisampleEnabled,
 543                    GL_MULTISAMPLE_ARB);
 544    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToCoverage,
 545                    enable->SampleAlphaToCoverage,
 546                    GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
 547    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToOne,
 548                    enable->SampleAlphaToOne,
 549                    GL_SAMPLE_ALPHA_TO_ONE_ARB);
 550    TEST_AND_UPDATE(ctx->Multisample.SampleCoverage,
 551                    enable->SampleCoverage,
 552                    GL_SAMPLE_COVERAGE_ARB);
 553    TEST_AND_UPDATE(ctx->Multisample.SampleCoverageInvert,
 554                    enable->SampleCoverageInvert,
 555                    GL_SAMPLE_COVERAGE_INVERT_ARB);
 556    /* GL_NV_vertex_program */
 557    TEST_AND_UPDATE(ctx->VertexProgram.Enabled,
 558                    enable->VertexProgram,
 559                    GL_VERTEX_PROGRAM_NV);
 560    TEST_AND_UPDATE(ctx->VertexProgram.PointSizeEnabled,
 561                    enable->VertexProgramPointSize,
 562                    GL_VERTEX_PROGRAM_POINT_SIZE_NV);
 563    TEST_AND_UPDATE(ctx->VertexProgram.TwoSideEnabled,
 564                    enable->VertexProgramTwoSide,
 565                    GL_VERTEX_PROGRAM_TWO_SIDE_NV);
 566
 567 #undef TEST_AND_UPDATE
 568
 569    /* texture unit enables */
 570    for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
 571       if (ctx->Texture.Unit[i].Enabled != enable->Texture[i]) {
 572          ctx->Texture.Unit[i].Enabled = enable->Texture[i];
 573          if (ctx->Driver.Enable) {
 574             if (ctx->Driver.ActiveTexture) {
 575                (*ctx->Driver.ActiveTexture)(ctx, i);
 576             }
 577             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D,
 578                              (GLboolean) (enable->Texture[i] & TEXTURE0_1D) );
 579             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D,
 580                              (GLboolean) (enable->Texture[i] & TEXTURE0_2D) );
 581             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D,
 582                              (GLboolean) (enable->Texture[i] & TEXTURE0_3D) );
 583          }
 584       }
 585
 586       if (ctx->Texture.Unit[i].TexGenEnabled != enable->TexGen[i]) {
 587          ctx->Texture.Unit[i].TexGenEnabled = enable->TexGen[i];
 588          if (ctx->Driver.Enable) {
 589             if (ctx->Driver.ActiveTexture) {
 590                (*ctx->Driver.ActiveTexture)(ctx, i);
 591             }
 592             if (enable->TexGen[i] & S_BIT)
 593                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_TRUE);
 594             else
 595                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_FALSE);
 596             if (enable->TexGen[i] & T_BIT)
 597                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_TRUE);
 598             else
 599                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_FALSE);
 600             if (enable->TexGen[i] & R_BIT)
 601                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_TRUE);
 602             else
 603                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_FALSE);
 604             if (enable->TexGen[i] & Q_BIT)
 605                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
 606             else
 607                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
 608          }
 609       }
 610    }
 611
 612    if (ctx->Driver.ActiveTexture) {
 613       (*ctx->Driver.ActiveTexture)(ctx, ctx->Texture.CurrentUnit);
 614    }
 615 }
 616
 617
 618 static void
 619 pop_texture_group(GLcontext *ctx, const struct gl_texture_attrib *texAttrib)
 620 {
 621    GLuint u;
 622
 623    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 624       const struct gl_texture_unit *unit = &texAttrib->Unit[u];
 625       GLuint numObjs, i;
 626
 627       _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + u);
 628       _mesa_set_enable(ctx, GL_TEXTURE_1D,
 629               (GLboolean) (unit->Enabled & TEXTURE0_1D ? GL_TRUE : GL_FALSE));
 630       _mesa_set_enable(ctx, GL_TEXTURE_2D,
 631               (GLboolean) (unit->Enabled & TEXTURE0_2D ? GL_TRUE : GL_FALSE));
 632       _mesa_set_enable(ctx, GL_TEXTURE_3D,
 633               (GLboolean) (unit->Enabled & TEXTURE0_3D ? GL_TRUE : GL_FALSE));
 634       if (ctx->Extensions.ARB_texture_cube_map) {
 635          _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP_ARB,
 636              (GLboolean) (unit->Enabled & TEXTURE0_CUBE ? GL_TRUE : GL_FALSE));
 637       }
 638       _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->EnvMode);
 639       _mesa_TexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, unit->EnvColor);
 640       _mesa_TexGeni(GL_S, GL_TEXTURE_GEN_MODE, unit->GenModeS);
 641       _mesa_TexGeni(GL_T, GL_TEXTURE_GEN_MODE, unit->GenModeT);
 642       _mesa_TexGeni(GL_R, GL_TEXTURE_GEN_MODE, unit->GenModeR);
 643       _mesa_TexGeni(GL_Q, GL_TEXTURE_GEN_MODE, unit->GenModeQ);
 644       _mesa_TexGenfv(GL_S, GL_OBJECT_PLANE, unit->ObjectPlaneS);
 645       _mesa_TexGenfv(GL_T, GL_OBJECT_PLANE, unit->ObjectPlaneT);
 646       _mesa_TexGenfv(GL_R, GL_OBJECT_PLANE, unit->ObjectPlaneR);
 647       _mesa_TexGenfv(GL_Q, GL_OBJECT_PLANE, unit->ObjectPlaneQ);
 648       _mesa_TexGenfv(GL_S, GL_EYE_PLANE, unit->EyePlaneS);
 649       _mesa_TexGenfv(GL_T, GL_EYE_PLANE, unit->EyePlaneT);
 650       _mesa_TexGenfv(GL_R, GL_EYE_PLANE, unit->EyePlaneR);
 651       _mesa_TexGenfv(GL_Q, GL_EYE_PLANE, unit->EyePlaneQ);
 652       if (ctx->Extensions.EXT_texture_lod_bias) {
 653          _mesa_TexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
 654                        GL_TEXTURE_LOD_BIAS_EXT, unit->LodBias);
 655       }
 656       if (ctx->Extensions.EXT_texture_env_combine ||
 657           ctx->Extensions.ARB_texture_env_combine) {
 658          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_EXT,
 659                        unit->CombineModeRGB);
 660          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_EXT,
 661                        unit->CombineModeA);
 662          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_EXT,
 663                        unit->CombineSourceRGB[0]);
 664          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_EXT,
 665                        unit->CombineSourceRGB[1]);
 666          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_EXT,
 667                        unit->CombineSourceRGB[2]);
 668          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_EXT,
 669                        unit->CombineSourceA[0]);
 670          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_EXT,
 671                        unit->CombineSourceA[1]);
 672          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA_EXT,
 673                        unit->CombineSourceA[2]);
 674          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_EXT,
 675                        unit->CombineOperandRGB[0]);
 676          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_EXT,
 677                        unit->CombineOperandRGB[1]);
 678          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB_EXT,
 679                        unit->CombineOperandRGB[2]);
 680          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_EXT,
 681                        unit->CombineOperandA[0]);
 682          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_EXT,
 683                        unit->CombineOperandA[1]);
 684          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA_EXT,
 685                        unit->CombineOperandA[2]);
 686          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_EXT,
 687                        1 << unit->CombineScaleShiftRGB);
 688          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE,
 689                        1 << unit->CombineScaleShiftA);
 690       }
 691
 692       /* Restore texture object state */
 693       numObjs = ctx->Extensions.ARB_texture_cube_map ? 4 : 3;
 694
 695       for (i = 0; i < numObjs; i++) {
 696          GLenum target = 0;
 697          const struct gl_texture_object *obj = NULL;
 698          GLfloat bordColor[4];
 699
 700          switch (i) {
 701          case 0:
 702             target = GL_TEXTURE_1D;
 703             obj = &unit->Saved1D;
 704             break;
 705          case 1:
 706             target = GL_TEXTURE_2D;
 707             obj = &unit->Saved2D;
 708             break;
 709          case 2:
 710             target = GL_TEXTURE_3D;
 711             obj = &unit->Saved3D;
 712             break;
 713          case 3:
 714             target = GL_TEXTURE_CUBE_MAP_ARB;
 715             obj = &unit->SavedCubeMap;
 716             break;
 717          default:
 718             ; /* silence warnings */
 719          }
 720
 721          _mesa_BindTexture(target, obj->Name);
 722
 723          bordColor[0] = CHAN_TO_FLOAT(obj->BorderColor[0]);
 724          bordColor[1] = CHAN_TO_FLOAT(obj->BorderColor[1]);
 725          bordColor[2] = CHAN_TO_FLOAT(obj->BorderColor[2]);
 726          bordColor[3] = CHAN_TO_FLOAT(obj->BorderColor[3]);
 727
 728          _mesa_TexParameterf(target, GL_TEXTURE_PRIORITY, obj->Priority);
 729          _mesa_TexParameterfv(target, GL_TEXTURE_BORDER_COLOR, bordColor);
 730          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, obj->WrapS);
 731          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, obj->WrapT);
 732          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, obj->WrapR);
 733          _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, obj->MinFilter);
 734          _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, obj->MagFilter);
 735          _mesa_TexParameterf(target, GL_TEXTURE_MIN_LOD, obj->MinLod);
 736          _mesa_TexParameterf(target, GL_TEXTURE_MAX_LOD, obj->MaxLod);
 737          _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, obj->BaseLevel);
 738          _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, obj->MaxLevel);
 739          if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 740             _mesa_TexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT,
 741                                 obj->MaxAnisotropy);
 742          }
 743          if (ctx->Extensions.SGIX_shadow) {
 744             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_SGIX,
 745                                 obj->CompareFlag);
 746             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_OPERATOR_SGIX,
 747                                 obj->CompareOperator);
 748          }
 749          if (ctx->Extensions.SGIX_shadow_ambient) {
 750             _mesa_TexParameterf(target, GL_SHADOW_AMBIENT_SGIX,
 751                                 CHAN_TO_FLOAT(obj->ShadowAmbient));
 752          }
 753
 754       }
 755    }
 756    _mesa_ActiveTextureARB(GL_TEXTURE0_ARB
 757                           + texAttrib->CurrentUnit);
 758
 759    /* "un-bump" the texture object reference counts.  We did that so they
 760     * wouldn't inadvertantly get deleted while they were still referenced
 761     * inside the attribute state stack.
 762     */
 763    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 764       ctx->Texture.Unit[u].Current1D->RefCount--;
 765       ctx->Texture.Unit[u].Current2D->RefCount--;
 766       ctx->Texture.Unit[u].Current3D->RefCount--;
 767       ctx->Texture.Unit[u].CurrentCubeMap->RefCount--;
 768    }
 769 }
 770
 771
 772 /*
 773  * This function is kind of long just because we have to call a lot
 774  * of device driver functions to update device driver state.
 775  *
 776  * XXX As it is now, most of the pop-code calls immediate-mode Mesa functions
 777  * in order to restore GL state.  This isn't terribly efficient but it
 778  * ensures that dirty flags and any derived state gets updated correctly.
 779  * We could at least check if the value to restore equals the current value
 780  * and then skip the Mesa call.
 781  */
 782 void
 783 _mesa_PopAttrib(void)
 784 {
 785    struct gl_attrib_node *attr, *next;
 786    GET_CURRENT_CONTEXT(ctx);
 787    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 788
 789    if (ctx->AttribStackDepth == 0) {
 790       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
 791       return;
 792    }
 793
 794    ctx->AttribStackDepth--;
 795    attr = ctx->AttribStack[ctx->AttribStackDepth];
 796
 797    while (attr) {
 798
 799       if (MESA_VERBOSE&VERBOSE_API) {
 800          fprintf(stderr, "glPopAttrib %s\n",
 801                  _mesa_lookup_enum_by_nr(attr->kind));
 802       }
 803
 804       switch (attr->kind) {
 805          case GL_ACCUM_BUFFER_BIT:
 806             {
 807                const struct gl_accum_attrib *accum;
 808                accum = (const struct gl_accum_attrib *) attr->data;
 809                _mesa_ClearAccum(accum->ClearColor[0],
 810                                 accum->ClearColor[1],
 811                                 accum->ClearColor[2],
 812                                 accum->ClearColor[3]);
 813             }
 814             break;
 815          case GL_COLOR_BUFFER_BIT:
 816             {
 817                const struct gl_colorbuffer_attrib *color;
 818                color = (const struct gl_colorbuffer_attrib *) attr->data;
 819                _mesa_ClearIndex((GLfloat) color->ClearIndex);
 820                _mesa_ClearColor(CHAN_TO_FLOAT(color->ClearColor[0]),
 821                                 CHAN_TO_FLOAT(color->ClearColor[1]),
 822                                 CHAN_TO_FLOAT(color->ClearColor[2]),
 823                                 CHAN_TO_FLOAT(color->ClearColor[3]));
 824                _mesa_IndexMask(color->IndexMask);
 825                _mesa_ColorMask((GLboolean) (color->ColorMask[0] != 0),
 826                                (GLboolean) (color->ColorMask[1] != 0),
 827                                (GLboolean) (color->ColorMask[2] != 0),
 828                                (GLboolean) (color->ColorMask[3] != 0));
 829                _mesa_DrawBuffer(color->DrawBuffer);
 830                _mesa_set_enable(ctx, GL_ALPHA_TEST, color->AlphaEnabled);
 831                _mesa_AlphaFunc(color->AlphaFunc,
 832                                CHAN_TO_FLOAT(color->AlphaRef));
 833                _mesa_set_enable(ctx, GL_BLEND, color->BlendEnabled);
 834                _mesa_BlendFuncSeparateEXT(color->BlendSrcRGB,
 835                                           color->BlendDstRGB,
 836                                           color->BlendSrcA,
 837                                           color->BlendDstA);
 838                _mesa_BlendEquation(color->BlendEquation);
 839                _mesa_BlendColor(color->BlendColor[0],
 840                                 color->BlendColor[1],
 841                                 color->BlendColor[2],
 842                                 color->BlendColor[3]);
 843                _mesa_LogicOp(color->LogicOp);
 844                _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP,
 845                                 color->ColorLogicOpEnabled);
 846                _mesa_set_enable(ctx, GL_INDEX_LOGIC_OP,
 847                                 color->IndexLogicOpEnabled);
 848                _mesa_set_enable(ctx, GL_DITHER, color->DitherFlag);
 849             }
 850             break;
 851          case GL_CURRENT_BIT:
 852             FLUSH_CURRENT( ctx, 0 );
 853             MEMCPY( &ctx->Current, attr->data,
 854                     sizeof(struct gl_current_attrib) );
 855             break;
 856          case GL_DEPTH_BUFFER_BIT:
 857             {
 858                const struct gl_depthbuffer_attrib *depth;
 859                depth = (const struct gl_depthbuffer_attrib *) attr->data;
 860                _mesa_DepthFunc(depth->Func);
 861                _mesa_ClearDepth(depth->Clear);
 862                _mesa_set_enable(ctx, GL_DEPTH_TEST, depth->Test);
 863                _mesa_DepthMask(depth->Mask);
 864                if (ctx->Extensions.HP_occlusion_test)
 865                   _mesa_set_enable(ctx, GL_OCCLUSION_TEST_HP,
 866                                    depth->OcclusionTest);
 867             }
 868             break;
 869          case GL_ENABLE_BIT:
 870             {
 871                const struct gl_enable_attrib *enable;
 872                enable = (const struct gl_enable_attrib *) attr->data;
 873                pop_enable_group(ctx, enable);
 874                ctx->NewState |= _NEW_ALL;
 875             }
 876             break;
 877          case GL_EVAL_BIT:
 878             MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
 879             ctx->NewState |= _NEW_EVAL;
 880             break;
 881          case GL_FOG_BIT:
 882             {
 883                const struct gl_fog_attrib *fog;
 884                fog = (const struct gl_fog_attrib *) attr->data;
 885                _mesa_set_enable(ctx, GL_FOG, fog->Enabled);
 886                _mesa_Fogfv(GL_FOG_COLOR, fog->Color);
 887                _mesa_Fogf(GL_FOG_DENSITY, fog->Density);
 888                _mesa_Fogf(GL_FOG_START, fog->Start);
 889                _mesa_Fogf(GL_FOG_END, fog->End);
 890                _mesa_Fogf(GL_FOG_INDEX, fog->Index);
 891                _mesa_Fogi(GL_FOG_MODE, fog->Mode);
 892             }
 893             break;
 894          case GL_HINT_BIT:
 895             {
 896                const struct gl_hint_attrib *hint;
 897                hint = (const struct gl_hint_attrib *) attr->data;
 898                _mesa_Hint(GL_PERSPECTIVE_CORRECTION_HINT,
 899                           hint->PerspectiveCorrection );
 900                _mesa_Hint(GL_POINT_SMOOTH_HINT, hint->PointSmooth);
 901                _mesa_Hint(GL_LINE_SMOOTH_HINT, hint->LineSmooth);
 902                _mesa_Hint(GL_POLYGON_SMOOTH_HINT, hint->PolygonSmooth);
 903                _mesa_Hint(GL_FOG_HINT, hint->Fog);
 904                _mesa_Hint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT,
 905                           hint->ClipVolumeClipping);
 906                if (ctx->Extensions.ARB_texture_compression)
 907                   _mesa_Hint(GL_TEXTURE_COMPRESSION_HINT_ARB,
 908                              hint->TextureCompression);
 909             }
 910             break;
 911          case GL_LIGHTING_BIT:
 912             {
 913                GLuint i;
 914                const struct gl_light_attrib *light;
 915                light = (const struct gl_light_attrib *) attr->data;
 916                /* lighting enable */
 917                _mesa_set_enable(ctx, GL_LIGHTING, light->Enabled);
 918                /* per-light state */
 919
 920                if (ctx->ModelviewMatrixStack.Top->flags & MAT_DIRTY_INVERSE)
 921                   _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
 922
 923                for (i = 0; i < MAX_LIGHTS; i++) {
 924                   GLenum lgt = (GLenum) (GL_LIGHT0 + i);
 925                   const struct gl_light *l = &light->Light[i];
 926                   GLfloat tmp[4];
 927                   _mesa_set_enable(ctx, lgt, l->Enabled);
 928                   _mesa_Lightfv( lgt, GL_AMBIENT, l->Ambient );
 929                   _mesa_Lightfv( lgt, GL_DIFFUSE, l->Diffuse );
 930                   _mesa_Lightfv( lgt, GL_SPECULAR, l->Specular );
 931                   TRANSFORM_POINT( tmp, ctx->ModelviewMatrixStack.Top->inv, l->EyePosition );
 932                   _mesa_Lightfv( lgt, GL_POSITION, tmp );
 933                   TRANSFORM_POINT( tmp, ctx->ModelviewMatrixStack.Top->m, l->EyeDirection );
 934                   _mesa_Lightfv( lgt, GL_SPOT_DIRECTION, tmp );
 935                   _mesa_Lightfv( lgt, GL_SPOT_EXPONENT, &l->SpotExponent );
 936                   _mesa_Lightfv( lgt, GL_SPOT_CUTOFF, &l->SpotCutoff );
 937                   _mesa_Lightfv( lgt, GL_CONSTANT_ATTENUATION,
 938                                  &l->ConstantAttenuation );
 939                   _mesa_Lightfv( lgt, GL_LINEAR_ATTENUATION,
 940                                  &l->LinearAttenuation );
 941                   _mesa_Lightfv( lgt, GL_QUADRATIC_ATTENUATION,
 942                                  &l->QuadraticAttenuation );
 943                }
 944                /* light model */
 945                _mesa_LightModelfv(GL_LIGHT_MODEL_AMBIENT,
 946                                   light->Model.Ambient);
 947                _mesa_LightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER,
 948                                  (GLfloat) light->Model.LocalViewer);
 949                _mesa_LightModelf(GL_LIGHT_MODEL_TWO_SIDE,
 950                                  (GLfloat) light->Model.TwoSide);
 951                _mesa_LightModelf(GL_LIGHT_MODEL_COLOR_CONTROL,
 952                                  (GLfloat) light->Model.ColorControl);
 953                /* materials */
 954                MEMCPY(ctx->Light.Material, light->Material,
 955                       2 * sizeof(struct gl_material));
 956                /* shade model */
 957                _mesa_ShadeModel(light->ShadeModel);
 958                /* color material */
 959                _mesa_ColorMaterial(light->ColorMaterialFace,
 960                                    light->ColorMaterialMode);
 961                _mesa_set_enable(ctx, GL_COLOR_MATERIAL,
 962                                 light->ColorMaterialEnabled);
 963             }
 964             break;
 965          case GL_LINE_BIT:
 966             {
 967                const struct gl_line_attrib *line;
 968                line = (const struct gl_line_attrib *) attr->data;
 969                _mesa_set_enable(ctx, GL_LINE_SMOOTH, line->SmoothFlag);
 970                _mesa_set_enable(ctx, GL_LINE_STIPPLE, line->StippleFlag);
 971                _mesa_LineStipple(line->StippleFactor, line->StipplePattern);
 972                _mesa_LineWidth(line->Width);
 973             }
 974             break;
 975          case GL_LIST_BIT:
 976             MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
 977             break;
 978          case GL_PIXEL_MODE_BIT:
 979             MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
 980             ctx->NewState |= _NEW_PIXEL;
 981             break;
 982          case GL_POINT_BIT:
 983             {
 984                const struct gl_point_attrib *point;
 985                point = (const struct gl_point_attrib *) attr->data;
 986                _mesa_PointSize(point->Size);
 987                _mesa_set_enable(ctx, GL_POINT_SMOOTH, point->SmoothFlag);
 988                _mesa_PointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT,
 989                                          point->Params);
 990                _mesa_PointParameterfEXT(GL_POINT_SIZE_MIN_EXT, point->MinSize);
 991                _mesa_PointParameterfEXT(GL_POINT_SIZE_MAX_EXT, point->MaxSize);
 992                _mesa_PointParameterfEXT(GL_POINT_FADE_THRESHOLD_SIZE_EXT,
 993                                         point->Threshold);
 994             }
 995             break;
 996          case GL_POLYGON_BIT:
 997             {
 998                const struct gl_polygon_attrib *polygon;
 999                polygon = (const struct gl_polygon_attrib *) attr->data;
1000                _mesa_CullFace(polygon->CullFaceMode);
1001                _mesa_FrontFace(polygon->FrontFace);
1002                _mesa_PolygonMode(GL_FRONT, polygon->FrontMode);
1003                _mesa_PolygonMode(GL_BACK, polygon->BackMode);
1004                _mesa_PolygonOffset(polygon->OffsetFactor,
1005                                    polygon->OffsetUnits);
1006                _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, polygon->SmoothFlag);
1007                _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, polygon->StippleFlag);
1008                _mesa_set_enable(ctx, GL_CULL_FACE, polygon->CullFlag);
1009                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_POINT,
1010                                 polygon->OffsetPoint);
1011                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_LINE,
1012                                 polygon->OffsetLine);
1013                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL,
1014                                 polygon->OffsetFill);
1015             }
1016             break;
1017          case GL_POLYGON_STIPPLE_BIT:
1018             MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
1019             ctx->NewState |= _NEW_POLYGONSTIPPLE;
1020             if (ctx->Driver.PolygonStipple)
1021                ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data );
1022             break;
1023          case GL_SCISSOR_BIT:
1024             {
1025                const struct gl_scissor_attrib *scissor;
1026                scissor = (const struct gl_scissor_attrib *) attr->data;
1027                _mesa_Scissor(scissor->X, scissor->Y,
1028                              scissor->Width, scissor->Height);
1029                _mesa_set_enable(ctx, GL_SCISSOR_TEST, scissor->Enabled);
1030             }
1031             break;
1032          case GL_STENCIL_BUFFER_BIT:
1033             {
1034                const struct gl_stencil_attrib *stencil;
1035                stencil = (const struct gl_stencil_attrib *) attr->data;
1036                _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);
1037                _mesa_ClearStencil(stencil->Clear);
1038                _mesa_StencilFunc(stencil->Function, stencil->Ref,
1039                                  stencil->ValueMask);
1040                _mesa_StencilMask(stencil->WriteMask);
1041                _mesa_StencilOp(stencil->FailFunc, stencil->ZFailFunc,
1042                                stencil->ZPassFunc);
1043             }
1044             break;
1045          case GL_TRANSFORM_BIT:
1046             {
1047                GLuint i;
1048                const struct gl_transform_attrib *xform;
1049                xform = (const struct gl_transform_attrib *) attr->data;
1050                _mesa_MatrixMode(xform->MatrixMode);
1051
1052                if (ctx->ProjectionMatrixStack.Top->flags & MAT_DIRTY)
1053                   _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
1054
1055                /* restore clip planes */
1056                for (i = 0; i < MAX_CLIP_PLANES; i++) {
1057                   const GLuint mask = 1 << 1;
1058                   const GLfloat *eyePlane = xform->EyeUserPlane[i];
1059                   COPY_4V(ctx->Transform.EyeUserPlane[i], eyePlane);
1060                   if (xform->ClipPlanesEnabled & mask) {
1061                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE);
1062                   }
1063                   else {
1064                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_FALSE);
1065                   }
1066                   if (ctx->Driver.ClipPlane)
1067                      ctx->Driver.ClipPlane( ctx, i, eyePlane );
1068                }
1069
1070                /* normalize/rescale */
1071                if (xform->Normalize != ctx->Transform.Normalize)
1072                   _mesa_set_enable(ctx, GL_NORMALIZE,ctx->Transform.Normalize);
1073                if (xform->RescaleNormals != ctx->Transform.RescaleNormals)
1074                   _mesa_set_enable(ctx, GL_RESCALE_NORMAL_EXT,
1075                                    ctx->Transform.RescaleNormals);
1076             }
1077             break;
1078          case GL_TEXTURE_BIT:
1079             /* Take care of texture object reference counters */
1080             {
1081                const struct gl_texture_attrib *texture;
1082                texture = (const struct gl_texture_attrib *) attr->data;
1083                pop_texture_group(ctx, texture);
1084                ctx->NewState |= _NEW_TEXTURE;
1085             }
1086             break;
1087          case GL_VIEWPORT_BIT:
1088             {
1089                const struct gl_viewport_attrib *vp;
1090                vp = (const struct gl_viewport_attrib *) attr->data;
1091                _mesa_Viewport(vp->X, vp->Y, vp->Width, vp->Height);
1092                _mesa_DepthRange(vp->Near, vp->Far);
1093             }
1094             break;
1095          case GL_MULTISAMPLE_BIT_ARB:
1096             {
1097                const struct gl_multisample_attrib *ms;
1098                ms = (const struct gl_multisample_attrib *) attr->data;
1099                _mesa_SampleCoverageARB(ms->SampleCoverageValue,
1100                                        ms->SampleCoverageInvert);
1101             }
1102             break;
1103
1104          default:
1105             _mesa_problem( ctx, "Bad attrib flag in PopAttrib");
1106             break;
1107       }
1108
1109       next = attr->next;
1110       FREE( attr->data );
1111       FREE( attr );
1112       attr = next;
1113    }
1114 }
1115
1116
1117 #define GL_CLIENT_PACK_BIT (1<<20)
1118 #define GL_CLIENT_UNPACK_BIT (1<<21)
1119
1120
1121 void
1122 _mesa_PushClientAttrib(GLbitfield mask)
1123 {
1124    struct gl_attrib_node *newnode;
1125    struct gl_attrib_node *head;
1126
1127    GET_CURRENT_CONTEXT(ctx);
1128    ASSERT_OUTSIDE_BEGIN_END(ctx);
1129
1130    if (ctx->ClientAttribStackDepth >= MAX_CLIENT_ATTRIB_STACK_DEPTH) {
1131       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
1132       return;
1133    }
1134
1135    /* Build linked list of attribute nodes which save all attribute */
1136    /* groups specified by the mask. */
1137    head = NULL;
1138
1139    if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
1140       struct gl_pixelstore_attrib *attr;
1141       /* packing attribs */
1142       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1143       MEMCPY( attr, &ctx->Pack, sizeof(struct gl_pixelstore_attrib) );
1144       newnode = new_attrib_node( GL_CLIENT_PACK_BIT );
1145       newnode->data = attr;
1146       newnode->next = head;
1147       head = newnode;
1148       /* unpacking attribs */
1149       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1150       MEMCPY( attr, &ctx->Unpack, sizeof(struct gl_pixelstore_attrib) );
1151       newnode = new_attrib_node( GL_CLIENT_UNPACK_BIT );
1152       newnode->data = attr;
1153       newnode->next = head;
1154       head = newnode;
1155    }
1156    if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
1157       struct gl_array_attrib *attr;
1158       attr = MALLOC_STRUCT( gl_array_attrib );
1159       MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
1160       newnode = new_attrib_node( GL_CLIENT_VERTEX_ARRAY_BIT );
1161       newnode->data = attr;
1162       newnode->next = head;
1163       head = newnode;
1164    }
1165
1166    ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
1167    ctx->ClientAttribStackDepth++;
1168 }
1169
1170
1171
1172
1173 void
1174 _mesa_PopClientAttrib(void)
1175 {
1176    struct gl_attrib_node *attr, *next;
1177
1178    GET_CURRENT_CONTEXT(ctx);
1179    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1180
1181    if (ctx->ClientAttribStackDepth == 0) {
1182       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
1183       return;
1184    }
1185
1186    ctx->ClientAttribStackDepth--;
1187    attr = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
1188
1189    while (attr) {
1190       switch (attr->kind) {
1191          case GL_CLIENT_PACK_BIT:
1192             MEMCPY( &ctx->Pack, attr->data,
1193                     sizeof(struct gl_pixelstore_attrib) );
1194             ctx->NewState |= _NEW_PACKUNPACK;
1195             break;
1196          case GL_CLIENT_UNPACK_BIT:
1197             MEMCPY( &ctx->Unpack, attr->data,
1198                     sizeof(struct gl_pixelstore_attrib) );
1199             ctx->NewState |= _NEW_PACKUNPACK;
1200             break;
1201          case GL_CLIENT_VERTEX_ARRAY_BIT:
1202             MEMCPY( &ctx->Array, attr->data,
1203                     sizeof(struct gl_array_attrib) );
1204             ctx->NewState |= _NEW_ARRAY;
1205             break;
1206          default:
1207             _mesa_problem( ctx, "Bad attrib flag in PopClientAttrib");
1208             break;
1209       }
1210
1211       next = attr->next;
1212       FREE( attr->data );
1213       FREE( attr );
1214       attr = next;
1215    }
1216 }