src/mesa/main/attrib.c

   1 /* $Id: attrib.c,v 1.21 2000/04/07 16:27:54 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.1
   6  *
   7  * Copyright (C) 1999-2000  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 "attrib.h"
  33 #include "buffers.h"
  34 #include "context.h"
  35 #include "enable.h"
  36 #include "enums.h"
  37 #include "mem.h"
  38 #include "simple_list.h"
  39 #include "texstate.h"
  40 #include "types.h"
  41 #endif
  42
  43
  44
  45
  46 /*
  47  * Allocate a new attribute state node.  These nodes have a
  48  * "kind" value and a pointer to a struct of state data.
  49  */
  50 static struct gl_attrib_node *
  51 new_attrib_node( GLbitfield kind )
  52 {
  53    struct gl_attrib_node *an = MALLOC_STRUCT(gl_attrib_node);
  54    if (an) {
  55       an->kind = kind;
  56    }
  57    return an;
  58 }
  59
  60
  61
  62 /*
  63  * Copy texture object state from one texture object to another.
  64  */
  65 static void
  66 copy_texobj_state( struct gl_texture_object *dest,
  67                    const struct gl_texture_object *src )
  68 {
  69    /*
  70    dest->Name = src->Name;
  71    dest->Dimensions = src->Dimensions;
  72    */
  73    dest->Priority = src->Priority;
  74    dest->BorderColor[0] = src->BorderColor[0];
  75    dest->BorderColor[1] = src->BorderColor[1];
  76    dest->BorderColor[2] = src->BorderColor[2];
  77    dest->BorderColor[3] = src->BorderColor[3];
  78    dest->WrapS = src->WrapS;
  79    dest->WrapT = src->WrapT;
  80    dest->WrapR = src->WrapR;
  81    dest->MinFilter = src->MinFilter;
  82    dest->MagFilter = src->MagFilter;
  83    dest->MinLod = src->MinLod;
  84    dest->MaxLod = src->MaxLod;
  85    dest->BaseLevel = src->BaseLevel;
  86    dest->MaxLevel = src->MaxLevel;
  87    dest->P = src->P;
  88    dest->M = src->M;
  89    dest->MinMagThresh = src->MinMagThresh;
  90    dest->Palette = src->Palette;
  91    dest->Complete = src->Complete;
  92    dest->SampleFunc = src->SampleFunc;
  93 }
  94
  95
  96
  97 void
  98 _mesa_PushAttrib(GLbitfield mask)
  99 {
 100    struct gl_attrib_node *newnode;
 101    struct gl_attrib_node *head;
 102
 103    GET_CURRENT_CONTEXT(ctx);
 104    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPushAttrib");
 105
 106    if (MESA_VERBOSE&VERBOSE_API)
 107       fprintf(stderr, "glPushAttrib %x\n", (int)mask);
 108
 109    if (ctx->AttribStackDepth>=MAX_ATTRIB_STACK_DEPTH) {
 110       gl_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
 111       return;
 112    }
 113
 114    /* Build linked list of attribute nodes which save all attribute */
 115    /* groups specified by the mask. */
 116    head = NULL;
 117
 118    if (mask & GL_ACCUM_BUFFER_BIT) {
 119       struct gl_accum_attrib *attr;
 120       attr = MALLOC_STRUCT( gl_accum_attrib );
 121       MEMCPY( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );
 122       newnode = new_attrib_node( GL_ACCUM_BUFFER_BIT );
 123       newnode->data = attr;
 124       newnode->next = head;
 125       head = newnode;
 126    }
 127
 128    if (mask & GL_COLOR_BUFFER_BIT) {
 129       struct gl_colorbuffer_attrib *attr;
 130       attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
 131       MEMCPY( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
 132       newnode = new_attrib_node( GL_COLOR_BUFFER_BIT );
 133       newnode->data = attr;
 134       newnode->next = head;
 135       head = newnode;
 136    }
 137
 138    if (mask & GL_CURRENT_BIT) {
 139       struct gl_current_attrib *attr;
 140       attr = MALLOC_STRUCT( gl_current_attrib );
 141       MEMCPY( attr, &ctx->Current, sizeof(struct gl_current_attrib) );
 142       newnode = new_attrib_node( GL_CURRENT_BIT );
 143       newnode->data = attr;
 144       newnode->next = head;
 145       head = newnode;
 146    }
 147
 148    if (mask & GL_DEPTH_BUFFER_BIT) {
 149       struct gl_depthbuffer_attrib *attr;
 150       attr = MALLOC_STRUCT( gl_depthbuffer_attrib );
 151       MEMCPY( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );
 152       newnode = new_attrib_node( GL_DEPTH_BUFFER_BIT );
 153       newnode->data = attr;
 154       newnode->next = head;
 155       head = newnode;
 156    }
 157
 158    if (mask & GL_ENABLE_BIT) {
 159       struct gl_enable_attrib *attr;
 160       GLuint i;
 161       attr = MALLOC_STRUCT( gl_enable_attrib );
 162       /* Copy enable flags from all other attributes into the enable struct. */
 163       attr->AlphaTest = ctx->Color.AlphaEnabled;
 164       attr->AutoNormal = ctx->Eval.AutoNormal;
 165       attr->Blend = ctx->Color.BlendEnabled;
 166       for (i=0;i<MAX_CLIP_PLANES;i++) {
 167          attr->ClipPlane[i] = ctx->Transform.ClipEnabled[i];
 168       }
 169       attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;
 170       attr->CullFace = ctx->Polygon.CullFlag;
 171       attr->DepthTest = ctx->Depth.Test;
 172       attr->Dither = ctx->Color.DitherFlag;
 173       attr->Fog = ctx->Fog.Enabled;
 174       for (i=0;i<MAX_LIGHTS;i++) {
 175          attr->Light[i] = ctx->Light.Light[i].Enabled;
 176       }
 177       attr->Lighting = ctx->Light.Enabled;
 178       attr->LineSmooth = ctx->Line.SmoothFlag;
 179       attr->LineStipple = ctx->Line.StippleFlag;
 180       attr->Histogram = ctx->Pixel.HistogramEnabled;
 181       attr->MinMax = ctx->Pixel.MinMaxEnabled;
 182       attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
 183       attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
 184       attr->Map1Color4 = ctx->Eval.Map1Color4;
 185       attr->Map1Index = ctx->Eval.Map1Index;
 186       attr->Map1Normal = ctx->Eval.Map1Normal;
 187       attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
 188       attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
 189       attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
 190       attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
 191       attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
 192       attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
 193       attr->Map2Color4 = ctx->Eval.Map2Color4;
 194       attr->Map2Index = ctx->Eval.Map2Index;
 195       attr->Map2Normal = ctx->Eval.Map2Normal;
 196       attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
 197       attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
 198       attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
 199       attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
 200       attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
 201       attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
 202       attr->Normalize = ctx->Transform.Normalize;
 203       attr->PixelTexture = ctx->Pixel.PixelTextureEnabled;
 204       attr->PointSmooth = ctx->Point.SmoothFlag;
 205       attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;
 206       attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;
 207       attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;
 208       attr->PolygonSmooth = ctx->Polygon.SmoothFlag;
 209       attr->PolygonStipple = ctx->Polygon.StippleFlag;
 210       attr->RescaleNormals = ctx->Transform.RescaleNormals;
 211       attr->Scissor = ctx->Scissor.Enabled;
 212       attr->Stencil = ctx->Stencil.Enabled;
 213       attr->Texture = ctx->Texture.Enabled;
 214       for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 215          attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
 216       }
 217       newnode = new_attrib_node( GL_ENABLE_BIT );
 218       newnode->data = attr;
 219       newnode->next = head;
 220       head = newnode;
 221    }
 222
 223    if (mask & GL_EVAL_BIT) {
 224       struct gl_eval_attrib *attr;
 225       attr = MALLOC_STRUCT( gl_eval_attrib );
 226       MEMCPY( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
 227       newnode = new_attrib_node( GL_EVAL_BIT );
 228       newnode->data = attr;
 229       newnode->next = head;
 230       head = newnode;
 231    }
 232
 233    if (mask & GL_FOG_BIT) {
 234       struct gl_fog_attrib *attr;
 235       attr = MALLOC_STRUCT( gl_fog_attrib );
 236       MEMCPY( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
 237       newnode = new_attrib_node( GL_FOG_BIT );
 238       newnode->data = attr;
 239       newnode->next = head;
 240       head = newnode;
 241    }
 242
 243    if (mask & GL_HINT_BIT) {
 244       struct gl_hint_attrib *attr;
 245       attr = MALLOC_STRUCT( gl_hint_attrib );
 246       MEMCPY( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
 247       newnode = new_attrib_node( GL_HINT_BIT );
 248       newnode->data = attr;
 249       newnode->next = head;
 250       head = newnode;
 251    }
 252
 253    if (mask & GL_LIGHTING_BIT) {
 254       struct gl_light_attrib *attr;
 255       attr = MALLOC_STRUCT( gl_light_attrib );
 256       MEMCPY( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
 257       newnode = new_attrib_node( GL_LIGHTING_BIT );
 258       newnode->data = attr;
 259       newnode->next = head;
 260       head = newnode;
 261    }
 262
 263    if (mask & GL_LINE_BIT) {
 264       struct gl_line_attrib *attr;
 265       attr = MALLOC_STRUCT( gl_line_attrib );
 266       MEMCPY( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
 267       newnode = new_attrib_node( GL_LINE_BIT );
 268       newnode->data = attr;
 269       newnode->next = head;
 270       head = newnode;
 271    }
 272
 273    if (mask & GL_LIST_BIT) {
 274       struct gl_list_attrib *attr;
 275       attr = MALLOC_STRUCT( gl_list_attrib );
 276       MEMCPY( attr, &ctx->List, sizeof(struct gl_list_attrib) );
 277       newnode = new_attrib_node( GL_LIST_BIT );
 278       newnode->data = attr;
 279       newnode->next = head;
 280       head = newnode;
 281    }
 282
 283    if (mask & GL_PIXEL_MODE_BIT) {
 284       struct gl_pixel_attrib *attr;
 285       attr = MALLOC_STRUCT( gl_pixel_attrib );
 286       MEMCPY( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
 287       newnode = new_attrib_node( GL_PIXEL_MODE_BIT );
 288       newnode->data = attr;
 289       newnode->next = head;
 290       head = newnode;
 291    }
 292
 293    if (mask & GL_POINT_BIT) {
 294       struct gl_point_attrib *attr;
 295       attr = MALLOC_STRUCT( gl_point_attrib );
 296       MEMCPY( attr, &ctx->Point, sizeof(struct gl_point_attrib) );
 297       newnode = new_attrib_node( GL_POINT_BIT );
 298       newnode->data = attr;
 299       newnode->next = head;
 300       head = newnode;
 301    }
 302
 303    if (mask & GL_POLYGON_BIT) {
 304       struct gl_polygon_attrib *attr;
 305       attr = MALLOC_STRUCT( gl_polygon_attrib );
 306       MEMCPY( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );
 307       newnode = new_attrib_node( GL_POLYGON_BIT );
 308       newnode->data = attr;
 309       newnode->next = head;
 310       head = newnode;
 311    }
 312
 313    if (mask & GL_POLYGON_STIPPLE_BIT) {
 314       GLuint *stipple;
 315       stipple = (GLuint *) MALLOC( 32*sizeof(GLuint) );
 316       MEMCPY( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );
 317       newnode = new_attrib_node( GL_POLYGON_STIPPLE_BIT );
 318       newnode->data = stipple;
 319       newnode->next = head;
 320       head = newnode;
 321    }
 322
 323    if (mask & GL_SCISSOR_BIT) {
 324       struct gl_scissor_attrib *attr;
 325       attr = MALLOC_STRUCT( gl_scissor_attrib );
 326       MEMCPY( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );
 327       newnode = new_attrib_node( GL_SCISSOR_BIT );
 328       newnode->data = attr;
 329       newnode->next = head;
 330       head = newnode;
 331    }
 332
 333    if (mask & GL_STENCIL_BUFFER_BIT) {
 334       struct gl_stencil_attrib *attr;
 335       attr = MALLOC_STRUCT( gl_stencil_attrib );
 336       MEMCPY( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );
 337       newnode = new_attrib_node( GL_STENCIL_BUFFER_BIT );
 338       newnode->data = attr;
 339       newnode->next = head;
 340       head = newnode;
 341    }
 342
 343    if (mask & GL_TEXTURE_BIT) {
 344       struct gl_texture_attrib *attr;
 345       GLuint u;
 346       /* Take care of texture object reference counters */
 347       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 348          ctx->Texture.Unit[u].CurrentD[1]->RefCount++;
 349          ctx->Texture.Unit[u].CurrentD[2]->RefCount++;
 350          ctx->Texture.Unit[u].CurrentD[3]->RefCount++;
 351       }
 352       attr = MALLOC_STRUCT( gl_texture_attrib );
 353       MEMCPY( attr, &ctx->Texture, sizeof(struct gl_texture_attrib) );
 354       /* copy state of the currently bound texture objects */
 355       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 356          copy_texobj_state(&attr->Unit[u].Saved1D, attr->Unit[u].CurrentD[1]);
 357          copy_texobj_state(&attr->Unit[u].Saved2D, attr->Unit[u].CurrentD[2]);
 358          copy_texobj_state(&attr->Unit[u].Saved3D, attr->Unit[u].CurrentD[3]);
 359       }
 360       newnode = new_attrib_node( GL_TEXTURE_BIT );
 361       newnode->data = attr;
 362       newnode->next = head;
 363       head = newnode;
 364    }
 365
 366    if (mask & GL_TRANSFORM_BIT) {
 367       struct gl_transform_attrib *attr;
 368       attr = MALLOC_STRUCT( gl_transform_attrib );
 369       MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
 370       newnode = new_attrib_node( GL_TRANSFORM_BIT );
 371       newnode->data = attr;
 372       newnode->next = head;
 373       head = newnode;
 374    }
 375
 376    if (mask & GL_VIEWPORT_BIT) {
 377       struct gl_viewport_attrib *attr;
 378       attr = MALLOC_STRUCT( gl_viewport_attrib );
 379       MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
 380       newnode = new_attrib_node( GL_VIEWPORT_BIT );
 381       newnode->data = attr;
 382       newnode->next = head;
 383       head = newnode;
 384    }
 385
 386    ctx->AttribStack[ctx->AttribStackDepth] = head;
 387    ctx->AttribStackDepth++;
 388 }
 389
 390
 391
 392 /*
 393  * This function is kind of long just because we have to call a lot
 394  * of device driver functions to update device driver state.
 395  */
 396 void
 397 _mesa_PopAttrib(void)
 398 {
 399    struct gl_attrib_node *attr, *next;
 400    GET_CURRENT_CONTEXT(ctx);
 401
 402    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPopAttrib");
 403
 404
 405    if (ctx->AttribStackDepth==0) {
 406       gl_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
 407       return;
 408    }
 409
 410    ctx->AttribStackDepth--;
 411    attr = ctx->AttribStack[ctx->AttribStackDepth];
 412
 413    while (attr) {
 414
 415       if (MESA_VERBOSE&VERBOSE_API)
 416          fprintf(stderr, "glPopAttrib %s\n", gl_lookup_enum_by_nr(attr->kind));
 417
 418       switch (attr->kind) {
 419          case GL_ACCUM_BUFFER_BIT:
 420             MEMCPY( &ctx->Accum, attr->data, sizeof(struct gl_accum_attrib) );
 421             break;
 422          case GL_COLOR_BUFFER_BIT:
 423             {
 424                GLenum oldDrawBuffer = ctx->Color.DrawBuffer;
 425                GLenum oldAlphaFunc = ctx->Color.AlphaFunc;
 426                GLubyte oldAlphaRef = ctx->Color.AlphaRef;
 427                GLenum oldBlendSrc = ctx->Color.BlendSrcRGB;
 428                GLenum oldBlendDst = ctx->Color.BlendDstRGB;
 429                GLenum oldLogicOp = ctx->Color.LogicOp;
 430                MEMCPY( &ctx->Color, attr->data,
 431                        sizeof(struct gl_colorbuffer_attrib) );
 432                if (ctx->Color.DrawBuffer != oldDrawBuffer) {
 433                   _mesa_DrawBuffer( ctx->Color.DrawBuffer);
 434                }
 435                if ((ctx->Color.BlendSrcRGB != oldBlendSrc ||
 436                     ctx->Color.BlendDstRGB != oldBlendDst) &&
 437                    ctx->Driver.BlendFunc)
 438                   (*ctx->Driver.BlendFunc)( ctx, ctx->Color.BlendSrcRGB,
 439                                             ctx->Color.BlendDstRGB);
 440                if (ctx->Color.LogicOp != oldLogicOp &&
 441                    ctx->Driver.LogicOpcode) {
 442                   ctx->Driver.LogicOpcode( ctx, ctx->Color.LogicOp );
 443                }
 444                if (ctx->Visual->RGBAflag) {
 445                   GLubyte r = (GLint) (ctx->Color.ClearColor[0] * 255.0F);
 446                   GLubyte g = (GLint) (ctx->Color.ClearColor[1] * 255.0F);
 447                   GLubyte b = (GLint) (ctx->Color.ClearColor[2] * 255.0F);
 448                   GLubyte a = (GLint) (ctx->Color.ClearColor[3] * 255.0F);
 449                   (*ctx->Driver.ClearColor)( ctx, r, g, b, a );
 450                   if ((ctx->Color.AlphaFunc != oldAlphaFunc ||
 451                        ctx->Color.AlphaRef != oldAlphaRef) &&
 452                       ctx->Driver.AlphaFunc)
 453                      (*ctx->Driver.AlphaFunc)( ctx, ctx->Color.AlphaFunc,
 454                                                ctx->Color.AlphaRef / 255.0F);
 455                   if (ctx->Driver.ColorMask) {
 456                      (*ctx->Driver.ColorMask)(ctx,
 457                                               ctx->Color.ColorMask[0],
 458                                               ctx->Color.ColorMask[1],
 459                                               ctx->Color.ColorMask[2],
 460                                               ctx->Color.ColorMask[3]);
 461                   }
 462                }
 463                else {
 464                   (*ctx->Driver.ClearIndex)( ctx, ctx->Color.ClearIndex);
 465                }
 466             }
 467             break;
 468          case GL_CURRENT_BIT:
 469             MEMCPY( &ctx->Current, attr->data,
 470                     sizeof(struct gl_current_attrib) );
 471             break;
 472          case GL_DEPTH_BUFFER_BIT:
 473             {
 474                GLenum oldDepthFunc = ctx->Depth.Func;
 475                GLboolean oldDepthMask = ctx->Depth.Mask;
 476                GLfloat oldDepthClear = ctx->Depth.Clear;
 477                MEMCPY( &ctx->Depth, attr->data,
 478                        sizeof(struct gl_depthbuffer_attrib) );
 479                if (ctx->Depth.Func != oldDepthFunc && ctx->Driver.DepthFunc)
 480                   (*ctx->Driver.DepthFunc)( ctx, ctx->Depth.Func );
 481                if (ctx->Depth.Mask != oldDepthMask && ctx->Driver.DepthMask)
 482                   (*ctx->Driver.DepthMask)( ctx, ctx->Depth.Mask );
 483                if (ctx->Depth.Clear != oldDepthClear && ctx->Driver.ClearDepth)
 484                   (*ctx->Driver.ClearDepth)( ctx, ctx->Depth.Clear );
 485             }
 486             break;
 487          case GL_ENABLE_BIT:
 488             {
 489                const struct gl_enable_attrib *enable;
 490                enable = (const struct gl_enable_attrib *) attr->data;
 491
 492 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)          \
 493         if ((VALUE) != (NEWVALUE)) {                    \
 494            _mesa_set_enable( ctx, ENUM, (NEWVALUE) );   \
 495         }
 496
 497                TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
 498                TEST_AND_UPDATE(ctx->Transform.Normalize, enable->AutoNormal, GL_NORMALIZE);
 499                TEST_AND_UPDATE(ctx->Color.BlendEnabled, enable->Blend, GL_BLEND);
 500                {
 501                   GLuint i;
 502                   for (i=0;i<MAX_CLIP_PLANES;i++) {
 503                      if (ctx->Transform.ClipEnabled[i] != enable->ClipPlane[i])
 504                         _mesa_set_enable( ctx, (GLenum) (GL_CLIP_PLANE0 + i), enable->ClipPlane[i] );
 505                   }
 506                }
 507                TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial, GL_COLOR_MATERIAL);
 508                TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
 509                TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
 510                TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
 511                TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
 512                TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
 513                TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
 514                TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple, GL_LINE_STIPPLE);
 515                TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp, GL_INDEX_LOGIC_OP);
 516                TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp, GL_COLOR_LOGIC_OP);
 517                TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
 518                TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
 519                TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
 520                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1, GL_MAP1_TEXTURE_COORD_1);
 521                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2, GL_MAP1_TEXTURE_COORD_2);
 522                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3, GL_MAP1_TEXTURE_COORD_3);
 523                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4, GL_MAP1_TEXTURE_COORD_4);
 524                TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3, GL_MAP1_VERTEX_3);
 525                TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4, GL_MAP1_VERTEX_4);
 526                TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
 527                TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
 528                TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
 529                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1, GL_MAP2_TEXTURE_COORD_1);
 530                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2, GL_MAP2_TEXTURE_COORD_2);
 531                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3, GL_MAP2_TEXTURE_COORD_3);
 532                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4, GL_MAP2_TEXTURE_COORD_4);
 533                TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3, GL_MAP2_VERTEX_3);
 534                TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4, GL_MAP2_VERTEX_4);
 535                TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
 536                TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals, GL_RESCALE_NORMAL_EXT);
 537                TEST_AND_UPDATE(ctx->Pixel.PixelTextureEnabled, enable->PixelTexture, GL_POINT_SMOOTH);
 538                TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth, GL_POINT_SMOOTH);
 539                TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint, GL_POLYGON_OFFSET_POINT);
 540                TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine, GL_POLYGON_OFFSET_LINE);
 541                TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill, GL_POLYGON_OFFSET_FILL);
 542                TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth, GL_POLYGON_SMOOTH);
 543                TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple, GL_POLYGON_STIPPLE);
 544                TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
 545                TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
 546                if (ctx->Texture.Enabled != enable->Texture) {
 547                   ctx->Texture.Enabled = enable->Texture;
 548                   if (ctx->Driver.Enable) {
 549                      if (ctx->Driver.ActiveTexture)
 550                         (*ctx->Driver.ActiveTexture)( ctx, 0 );
 551                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D, (GLboolean) (enable->Texture & TEXTURE0_1D) );
 552                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D, (GLboolean) (enable->Texture & TEXTURE0_2D) );
 553                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D, (GLboolean) (enable->Texture & TEXTURE0_3D) );
 554                      if (ctx->Driver.ActiveTexture)
 555                         (*ctx->Driver.ActiveTexture)( ctx, 1 );
 556                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D, (GLboolean) (enable->Texture & TEXTURE1_1D) );
 557                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D, (GLboolean) (enable->Texture & TEXTURE1_2D) );
 558                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D, (GLboolean) (enable->Texture & TEXTURE1_3D) );
 559                      if (ctx->Driver.ActiveTexture)
 560                         (*ctx->Driver.ActiveTexture)( ctx, ctx->Texture.CurrentUnit );
 561                   }
 562                }
 563 #undef TEST_AND_UPDATE
 564                {
 565                   GLuint i;
 566                   for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 567                      if (ctx->Texture.Unit[i].TexGenEnabled != enable->TexGen[i]) {
 568                         ctx->Texture.Unit[i].TexGenEnabled = enable->TexGen[i];
 569
 570                         /* ctx->Enabled recalculated in state change
 571                            processing */
 572
 573                         if (ctx->Driver.Enable) {
 574                            if (ctx->Driver.ActiveTexture)
 575                               (*ctx->Driver.ActiveTexture)( ctx, i );
 576                            if (enable->TexGen[i] & S_BIT)
 577                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_TRUE);
 578                            else
 579                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_FALSE);
 580                            if (enable->TexGen[i] & T_BIT)
 581                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_TRUE);
 582                            else
 583                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_FALSE);
 584                            if (enable->TexGen[i] & R_BIT)
 585                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_TRUE);
 586                            else
 587                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_FALSE);
 588                            if (enable->TexGen[i] & Q_BIT)
 589                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
 590                            else
 591                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
 592                         }
 593                      }
 594                   }
 595                   if (ctx->Driver.ActiveTexture)
 596                      (*ctx->Driver.ActiveTexture)( ctx, ctx->Texture.CurrentUnit );
 597                }
 598             }
 599             break;
 600          case GL_EVAL_BIT:
 601             MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
 602             break;
 603          case GL_FOG_BIT:
 604             {
 605                GLboolean anyChange = (GLboolean) (memcmp( &ctx->Fog, attr->data, sizeof(struct gl_fog_attrib) ) != 0);
 606                MEMCPY( &ctx->Fog, attr->data, sizeof(struct gl_fog_attrib) );
 607                if (anyChange && ctx->Driver.Fogfv) {
 608                   const GLfloat mode = (GLfloat) ctx->Fog.Mode;
 609                   const GLfloat density = ctx->Fog.Density;
 610                   const GLfloat start = ctx->Fog.Start;
 611                   const GLfloat end = ctx->Fog.End;
 612                   const GLfloat index = ctx->Fog.Index;
 613                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_MODE, &mode);
 614                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_DENSITY, &density );
 615                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_START, &start );
 616                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_END, &end );
 617                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_INDEX, &index );
 618                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_COLOR, ctx->Fog.Color );
 619                }
 620                ctx->Enabled &= ~ENABLE_FOG;
 621                if (ctx->Fog.Enabled) ctx->Enabled |= ENABLE_FOG;
 622             }
 623             break;
 624          case GL_HINT_BIT:
 625             MEMCPY( &ctx->Hint, attr->data, sizeof(struct gl_hint_attrib) );
 626             if (ctx->Driver.Hint) {
 627                (*ctx->Driver.Hint)( ctx, GL_PERSPECTIVE_CORRECTION_HINT,
 628                                     ctx->Hint.PerspectiveCorrection );
 629                (*ctx->Driver.Hint)( ctx, GL_POINT_SMOOTH_HINT,
 630                                     ctx->Hint.PointSmooth);
 631                (*ctx->Driver.Hint)( ctx, GL_LINE_SMOOTH_HINT,
 632                                     ctx->Hint.LineSmooth );
 633                (*ctx->Driver.Hint)( ctx, GL_POLYGON_SMOOTH_HINT,
 634                                     ctx->Hint.PolygonSmooth );
 635                (*ctx->Driver.Hint)( ctx, GL_FOG_HINT, ctx->Hint.Fog );
 636             }
 637             break;
 638          case GL_LIGHTING_BIT:
 639             MEMCPY( &ctx->Light, attr->data, sizeof(struct gl_light_attrib) );
 640             if (ctx->Driver.Enable) {
 641                GLuint i;
 642                for (i = 0; i < MAX_LIGHTS; i++) {
 643                   GLenum light = (GLenum) (GL_LIGHT0 + i);
 644                   (*ctx->Driver.Enable)( ctx, light, ctx->Light.Light[i].Enabled );
 645                }
 646                (*ctx->Driver.Enable)( ctx, GL_LIGHTING, ctx->Light.Enabled );
 647             }
 648             if (ctx->Light.ShadeModel == GL_FLAT)
 649                ctx->TriangleCaps |= DD_FLATSHADE;
 650             else
 651                ctx->TriangleCaps &= ~DD_FLATSHADE;
 652             if (ctx->Driver.ShadeModel)
 653                (*ctx->Driver.ShadeModel)(ctx, ctx->Light.ShadeModel);
 654             ctx->Enabled &= ~ENABLE_LIGHT;
 655             if (ctx->Light.Enabled && !is_empty_list(&ctx->Light.EnabledList))
 656                ctx->Enabled |= ENABLE_LIGHT;
 657             break;
 658          case GL_LINE_BIT:
 659             MEMCPY( &ctx->Line, attr->data, sizeof(struct gl_line_attrib) );
 660             if (ctx->Driver.Enable) {
 661                (*ctx->Driver.Enable)( ctx, GL_LINE_SMOOTH, ctx->Line.SmoothFlag );
 662                (*ctx->Driver.Enable)( ctx, GL_LINE_STIPPLE, ctx->Line.StippleFlag );
 663             }
 664             if (ctx->Driver.LineStipple)
 665                (*ctx->Driver.LineStipple)(ctx, ctx->Line.StippleFactor,
 666                                           ctx->Line.StipplePattern);
 667             if (ctx->Driver.LineWidth)
 668                (*ctx->Driver.LineWidth)(ctx, ctx->Line.Width);
 669             break;
 670          case GL_LIST_BIT:
 671             MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
 672             break;
 673          case GL_PIXEL_MODE_BIT:
 674             MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
 675             break;
 676          case GL_POINT_BIT:
 677             MEMCPY( &ctx->Point, attr->data, sizeof(struct gl_point_attrib) );
 678             if (ctx->Driver.Enable)
 679                (*ctx->Driver.Enable)( ctx, GL_POINT_SMOOTH, ctx->Point.SmoothFlag );
 680             break;
 681          case GL_POLYGON_BIT:
 682             {
 683                GLenum oldFrontMode = ctx->Polygon.FrontMode;
 684                GLenum oldBackMode = ctx->Polygon.BackMode;
 685                MEMCPY( &ctx->Polygon, attr->data,
 686                        sizeof(struct gl_polygon_attrib) );
 687                if ((ctx->Polygon.FrontMode != oldFrontMode ||
 688                     ctx->Polygon.BackMode != oldBackMode) &&
 689                    ctx->Driver.PolygonMode) {
 690                   (*ctx->Driver.PolygonMode)( ctx, GL_FRONT, ctx->Polygon.FrontMode);
 691                   (*ctx->Driver.PolygonMode)( ctx, GL_BACK, ctx->Polygon.BackMode);
 692                }
 693                if (ctx->Driver.CullFace)
 694                   ctx->Driver.CullFace( ctx, ctx->Polygon.CullFaceMode );
 695
 696                if (ctx->Driver.FrontFace)
 697                   ctx->Driver.FrontFace( ctx, ctx->Polygon.FrontFace );
 698
 699                if (ctx->Driver.Enable)
 700                   (*ctx->Driver.Enable)( ctx, GL_POLYGON_SMOOTH, ctx->Polygon.SmoothFlag );
 701             }
 702             break;
 703          case GL_POLYGON_STIPPLE_BIT:
 704             MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
 705             if (ctx->Driver.PolygonStipple)
 706                ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data );
 707             break;
 708          case GL_SCISSOR_BIT:
 709             MEMCPY( &ctx->Scissor, attr->data,
 710                     sizeof(struct gl_scissor_attrib) );
 711             if (ctx->Driver.Enable)
 712                (*ctx->Driver.Enable)( ctx, GL_SCISSOR_TEST, ctx->Scissor.Enabled );
 713             if (ctx->Driver.Scissor)
 714                ctx->Driver.Scissor( ctx, ctx->Scissor.X, ctx->Scissor.Y,
 715                                     ctx->Scissor.Width, ctx->Scissor.Height );
 716             break;
 717          case GL_STENCIL_BUFFER_BIT:
 718             MEMCPY( &ctx->Stencil, attr->data,
 719                     sizeof(struct gl_stencil_attrib) );
 720             if (ctx->Driver.StencilFunc)
 721                (*ctx->Driver.StencilFunc)( ctx, ctx->Stencil.Function,
 722                                    ctx->Stencil.Ref, ctx->Stencil.ValueMask);
 723             if (ctx->Driver.StencilMask)
 724                (*ctx->Driver.StencilMask)( ctx, ctx->Stencil.WriteMask );
 725             if (ctx->Driver.StencilOp)
 726                (*ctx->Driver.StencilOp)( ctx, ctx->Stencil.FailFunc,
 727                               ctx->Stencil.ZFailFunc, ctx->Stencil.ZPassFunc);
 728             if (ctx->Driver.ClearStencil)
 729                (*ctx->Driver.ClearStencil)( ctx, ctx->Stencil.Clear );
 730             if (ctx->Driver.Enable)
 731                (*ctx->Driver.Enable)( ctx, GL_STENCIL_TEST, ctx->Stencil.Enabled );
 732             ctx->TriangleCaps &= ~DD_STENCIL;
 733             if (ctx->Stencil.Enabled)
 734                ctx->TriangleCaps |= DD_STENCIL;
 735
 736             break;
 737          case GL_TRANSFORM_BIT:
 738             MEMCPY( &ctx->Transform, attr->data,
 739                     sizeof(struct gl_transform_attrib) );
 740             if (ctx->Driver.Enable) {
 741                (*ctx->Driver.Enable)( ctx, GL_NORMALIZE, ctx->Transform.Normalize );
 742                (*ctx->Driver.Enable)( ctx, GL_RESCALE_NORMAL_EXT, ctx->Transform.RescaleNormals );
 743             }
 744             ctx->Enabled &= ~(ENABLE_NORMALIZE|ENABLE_RESCALE);
 745             if (ctx->Transform.Normalize) ctx->Enabled |= ENABLE_NORMALIZE;
 746             if (ctx->Transform.RescaleNormals) ctx->Enabled |= ENABLE_RESCALE;
 747             break;
 748          case GL_TEXTURE_BIT:
 749             /* Take care of texture object reference counters */
 750             {
 751                GLuint u;
 752                for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 753                   ctx->Texture.Unit[u].CurrentD[1]->RefCount--;
 754                   ctx->Texture.Unit[u].CurrentD[2]->RefCount--;
 755                   ctx->Texture.Unit[u].CurrentD[3]->RefCount--;
 756                }
 757                MEMCPY( &ctx->Texture, attr->data,
 758                        sizeof(struct gl_texture_attrib) );
 759                /* restore state of the currently bound texture objects */
 760                for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 761                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[1],
 762                                      &(ctx->Texture.Unit[u].Saved1D) );
 763                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[2],
 764                                      &(ctx->Texture.Unit[u].Saved2D) );
 765                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[3],
 766                                      &(ctx->Texture.Unit[u].Saved3D) );
 767                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[1] );
 768                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[2] );
 769                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[3] );
 770
 771                }
 772             }
 773             break;
 774          case GL_VIEWPORT_BIT:
 775          {
 776             struct gl_viewport_attrib *v =
 777                (struct gl_viewport_attrib *)attr->data;
 778
 779             _mesa_Viewport( v->X, v->Y, v->Width, v->Height );
 780             _mesa_DepthRange( v->Near, v->Far );
 781             break;
 782          }
 783          default:
 784             gl_problem( ctx, "Bad attrib flag in PopAttrib");
 785             break;
 786       }
 787
 788       next = attr->next;
 789       FREE( attr->data );
 790       FREE( attr );
 791       attr = next;
 792    }
 793
 794    ctx->NewState = NEW_ALL;
 795 }
 796
 797
 798 #define GL_CLIENT_PACK_BIT (1<<20)
 799 #define GL_CLIENT_UNPACK_BIT (1<<21)
 800
 801
 802 void
 803 _mesa_PushClientAttrib(GLbitfield mask)
 804 {
 805    struct gl_attrib_node *newnode;
 806    struct gl_attrib_node *head;
 807
 808    GET_CURRENT_CONTEXT(ctx);
 809    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPushClientAttrib");
 810
 811    if (ctx->ClientAttribStackDepth>=MAX_CLIENT_ATTRIB_STACK_DEPTH) {
 812       gl_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
 813       return;
 814    }
 815
 816    /* Build linked list of attribute nodes which save all attribute */
 817    /* groups specified by the mask. */
 818    head = NULL;
 819
 820    if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
 821       struct gl_pixelstore_attrib *attr;
 822       /* packing attribs */
 823       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
 824       MEMCPY( attr, &ctx->Pack, sizeof(struct gl_pixelstore_attrib) );
 825       newnode = new_attrib_node( GL_CLIENT_PACK_BIT );
 826       newnode->data = attr;
 827       newnode->next = head;
 828       head = newnode;
 829       /* unpacking attribs */
 830       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
 831       MEMCPY( attr, &ctx->Unpack, sizeof(struct gl_pixelstore_attrib) );
 832       newnode = new_attrib_node( GL_CLIENT_UNPACK_BIT );
 833       newnode->data = attr;
 834       newnode->next = head;
 835       head = newnode;
 836    }
 837    if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
 838       struct gl_array_attrib *attr;
 839       attr = MALLOC_STRUCT( gl_array_attrib );
 840       MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
 841       newnode = new_attrib_node( GL_CLIENT_VERTEX_ARRAY_BIT );
 842       newnode->data = attr;
 843       newnode->next = head;
 844       head = newnode;
 845    }
 846
 847    ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
 848    ctx->ClientAttribStackDepth++;
 849 }
 850
 851
 852
 853
 854 void
 855 _mesa_PopClientAttrib(void)
 856 {
 857    struct gl_attrib_node *attr, *next;
 858
 859    GET_CURRENT_CONTEXT(ctx);
 860    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPopClientAttrib");
 861
 862    if (ctx->ClientAttribStackDepth==0) {
 863       gl_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
 864       return;
 865    }
 866
 867    ctx->ClientAttribStackDepth--;
 868    attr = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
 869
 870    while (attr) {
 871       switch (attr->kind) {
 872          case GL_CLIENT_PACK_BIT:
 873             MEMCPY( &ctx->Pack, attr->data,
 874                     sizeof(struct gl_pixelstore_attrib) );
 875             break;
 876          case GL_CLIENT_UNPACK_BIT:
 877             MEMCPY( &ctx->Unpack, attr->data,
 878                     sizeof(struct gl_pixelstore_attrib) );
 879             break;
 880          case GL_CLIENT_VERTEX_ARRAY_BIT:
 881             MEMCPY( &ctx->Array, attr->data,
 882                     sizeof(struct gl_array_attrib) );
 883             break;
 884          default:
 885             gl_problem( ctx, "Bad attrib flag in PopClientAttrib");
 886             break;
 887       }
 888
 889       next = attr->next;
 890       FREE( attr->data );
 891       FREE( attr );
 892       attr = next;
 893    }
 894
 895    ctx->NewState = NEW_ALL;
 896 }
 897
 898
 899