src/mesa/main/attrib.c

   1 /* $Id: attrib.c,v 1.23 2000/05/07 20:41:30 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->Convolution1D = ctx->Pixel.Convolution1DEnabled;
 171       attr->Convolution2D = ctx->Pixel.Convolution2DEnabled;
 172       attr->Separable2D = ctx->Pixel.Separable2DEnabled;
 173       attr->CullFace = ctx->Polygon.CullFlag;
 174       attr->DepthTest = ctx->Depth.Test;
 175       attr->Dither = ctx->Color.DitherFlag;
 176       attr->Fog = ctx->Fog.Enabled;
 177       for (i=0;i<MAX_LIGHTS;i++) {
 178          attr->Light[i] = ctx->Light.Light[i].Enabled;
 179       }
 180       attr->Lighting = ctx->Light.Enabled;
 181       attr->LineSmooth = ctx->Line.SmoothFlag;
 182       attr->LineStipple = ctx->Line.StippleFlag;
 183       attr->Histogram = ctx->Pixel.HistogramEnabled;
 184       attr->MinMax = ctx->Pixel.MinMaxEnabled;
 185       attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
 186       attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
 187       attr->Map1Color4 = ctx->Eval.Map1Color4;
 188       attr->Map1Index = ctx->Eval.Map1Index;
 189       attr->Map1Normal = ctx->Eval.Map1Normal;
 190       attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
 191       attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
 192       attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
 193       attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
 194       attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
 195       attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
 196       attr->Map2Color4 = ctx->Eval.Map2Color4;
 197       attr->Map2Index = ctx->Eval.Map2Index;
 198       attr->Map2Normal = ctx->Eval.Map2Normal;
 199       attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
 200       attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
 201       attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
 202       attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
 203       attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
 204       attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
 205       attr->Normalize = ctx->Transform.Normalize;
 206       attr->PixelTexture = ctx->Pixel.PixelTextureEnabled;
 207       attr->PointSmooth = ctx->Point.SmoothFlag;
 208       attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;
 209       attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;
 210       attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;
 211       attr->PolygonSmooth = ctx->Polygon.SmoothFlag;
 212       attr->PolygonStipple = ctx->Polygon.StippleFlag;
 213       attr->RescaleNormals = ctx->Transform.RescaleNormals;
 214       attr->Scissor = ctx->Scissor.Enabled;
 215       attr->Stencil = ctx->Stencil.Enabled;
 216       attr->Texture = ctx->Texture.Enabled;
 217       for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 218          attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
 219       }
 220       newnode = new_attrib_node( GL_ENABLE_BIT );
 221       newnode->data = attr;
 222       newnode->next = head;
 223       head = newnode;
 224    }
 225
 226    if (mask & GL_EVAL_BIT) {
 227       struct gl_eval_attrib *attr;
 228       attr = MALLOC_STRUCT( gl_eval_attrib );
 229       MEMCPY( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
 230       newnode = new_attrib_node( GL_EVAL_BIT );
 231       newnode->data = attr;
 232       newnode->next = head;
 233       head = newnode;
 234    }
 235
 236    if (mask & GL_FOG_BIT) {
 237       struct gl_fog_attrib *attr;
 238       attr = MALLOC_STRUCT( gl_fog_attrib );
 239       MEMCPY( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
 240       newnode = new_attrib_node( GL_FOG_BIT );
 241       newnode->data = attr;
 242       newnode->next = head;
 243       head = newnode;
 244    }
 245
 246    if (mask & GL_HINT_BIT) {
 247       struct gl_hint_attrib *attr;
 248       attr = MALLOC_STRUCT( gl_hint_attrib );
 249       MEMCPY( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
 250       newnode = new_attrib_node( GL_HINT_BIT );
 251       newnode->data = attr;
 252       newnode->next = head;
 253       head = newnode;
 254    }
 255
 256    if (mask & GL_LIGHTING_BIT) {
 257       struct gl_light_attrib *attr;
 258       attr = MALLOC_STRUCT( gl_light_attrib );
 259       MEMCPY( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
 260       newnode = new_attrib_node( GL_LIGHTING_BIT );
 261       newnode->data = attr;
 262       newnode->next = head;
 263       head = newnode;
 264    }
 265
 266    if (mask & GL_LINE_BIT) {
 267       struct gl_line_attrib *attr;
 268       attr = MALLOC_STRUCT( gl_line_attrib );
 269       MEMCPY( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
 270       newnode = new_attrib_node( GL_LINE_BIT );
 271       newnode->data = attr;
 272       newnode->next = head;
 273       head = newnode;
 274    }
 275
 276    if (mask & GL_LIST_BIT) {
 277       struct gl_list_attrib *attr;
 278       attr = MALLOC_STRUCT( gl_list_attrib );
 279       MEMCPY( attr, &ctx->List, sizeof(struct gl_list_attrib) );
 280       newnode = new_attrib_node( GL_LIST_BIT );
 281       newnode->data = attr;
 282       newnode->next = head;
 283       head = newnode;
 284    }
 285
 286    if (mask & GL_PIXEL_MODE_BIT) {
 287       struct gl_pixel_attrib *attr;
 288       attr = MALLOC_STRUCT( gl_pixel_attrib );
 289       MEMCPY( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
 290       newnode = new_attrib_node( GL_PIXEL_MODE_BIT );
 291       newnode->data = attr;
 292       newnode->next = head;
 293       head = newnode;
 294    }
 295
 296    if (mask & GL_POINT_BIT) {
 297       struct gl_point_attrib *attr;
 298       attr = MALLOC_STRUCT( gl_point_attrib );
 299       MEMCPY( attr, &ctx->Point, sizeof(struct gl_point_attrib) );
 300       newnode = new_attrib_node( GL_POINT_BIT );
 301       newnode->data = attr;
 302       newnode->next = head;
 303       head = newnode;
 304    }
 305
 306    if (mask & GL_POLYGON_BIT) {
 307       struct gl_polygon_attrib *attr;
 308       attr = MALLOC_STRUCT( gl_polygon_attrib );
 309       MEMCPY( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );
 310       newnode = new_attrib_node( GL_POLYGON_BIT );
 311       newnode->data = attr;
 312       newnode->next = head;
 313       head = newnode;
 314    }
 315
 316    if (mask & GL_POLYGON_STIPPLE_BIT) {
 317       GLuint *stipple;
 318       stipple = (GLuint *) MALLOC( 32*sizeof(GLuint) );
 319       MEMCPY( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );
 320       newnode = new_attrib_node( GL_POLYGON_STIPPLE_BIT );
 321       newnode->data = stipple;
 322       newnode->next = head;
 323       head = newnode;
 324    }
 325
 326    if (mask & GL_SCISSOR_BIT) {
 327       struct gl_scissor_attrib *attr;
 328       attr = MALLOC_STRUCT( gl_scissor_attrib );
 329       MEMCPY( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );
 330       newnode = new_attrib_node( GL_SCISSOR_BIT );
 331       newnode->data = attr;
 332       newnode->next = head;
 333       head = newnode;
 334    }
 335
 336    if (mask & GL_STENCIL_BUFFER_BIT) {
 337       struct gl_stencil_attrib *attr;
 338       attr = MALLOC_STRUCT( gl_stencil_attrib );
 339       MEMCPY( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );
 340       newnode = new_attrib_node( GL_STENCIL_BUFFER_BIT );
 341       newnode->data = attr;
 342       newnode->next = head;
 343       head = newnode;
 344    }
 345
 346    if (mask & GL_TEXTURE_BIT) {
 347       struct gl_texture_attrib *attr;
 348       GLuint u;
 349       /* Take care of texture object reference counters */
 350       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 351          ctx->Texture.Unit[u].CurrentD[1]->RefCount++;
 352          ctx->Texture.Unit[u].CurrentD[2]->RefCount++;
 353          ctx->Texture.Unit[u].CurrentD[3]->RefCount++;
 354       }
 355       attr = MALLOC_STRUCT( gl_texture_attrib );
 356       MEMCPY( attr, &ctx->Texture, sizeof(struct gl_texture_attrib) );
 357       /* copy state of the currently bound texture objects */
 358       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 359          copy_texobj_state(&attr->Unit[u].Saved1D, attr->Unit[u].CurrentD[1]);
 360          copy_texobj_state(&attr->Unit[u].Saved2D, attr->Unit[u].CurrentD[2]);
 361          copy_texobj_state(&attr->Unit[u].Saved3D, attr->Unit[u].CurrentD[3]);
 362       }
 363       newnode = new_attrib_node( GL_TEXTURE_BIT );
 364       newnode->data = attr;
 365       newnode->next = head;
 366       head = newnode;
 367    }
 368
 369    if (mask & GL_TRANSFORM_BIT) {
 370       struct gl_transform_attrib *attr;
 371       attr = MALLOC_STRUCT( gl_transform_attrib );
 372       MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
 373       newnode = new_attrib_node( GL_TRANSFORM_BIT );
 374       newnode->data = attr;
 375       newnode->next = head;
 376       head = newnode;
 377    }
 378
 379    if (mask & GL_VIEWPORT_BIT) {
 380       struct gl_viewport_attrib *attr;
 381       attr = MALLOC_STRUCT( gl_viewport_attrib );
 382       MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
 383       newnode = new_attrib_node( GL_VIEWPORT_BIT );
 384       newnode->data = attr;
 385       newnode->next = head;
 386       head = newnode;
 387    }
 388
 389    ctx->AttribStack[ctx->AttribStackDepth] = head;
 390    ctx->AttribStackDepth++;
 391 }
 392
 393
 394
 395 /*
 396  * This function is kind of long just because we have to call a lot
 397  * of device driver functions to update device driver state.
 398  */
 399 void
 400 _mesa_PopAttrib(void)
 401 {
 402    struct gl_attrib_node *attr, *next;
 403    GET_CURRENT_CONTEXT(ctx);
 404
 405    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPopAttrib");
 406
 407
 408    if (ctx->AttribStackDepth==0) {
 409       gl_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
 410       return;
 411    }
 412
 413    ctx->AttribStackDepth--;
 414    attr = ctx->AttribStack[ctx->AttribStackDepth];
 415
 416    while (attr) {
 417
 418       if (MESA_VERBOSE&VERBOSE_API)
 419          fprintf(stderr, "glPopAttrib %s\n", gl_lookup_enum_by_nr(attr->kind));
 420
 421       switch (attr->kind) {
 422          case GL_ACCUM_BUFFER_BIT:
 423             MEMCPY( &ctx->Accum, attr->data, sizeof(struct gl_accum_attrib) );
 424             break;
 425          case GL_COLOR_BUFFER_BIT:
 426             {
 427                GLenum oldDrawBuffer = ctx->Color.DrawBuffer;
 428                GLenum oldAlphaFunc = ctx->Color.AlphaFunc;
 429                GLubyte oldAlphaRef = ctx->Color.AlphaRef;
 430                GLenum oldBlendSrc = ctx->Color.BlendSrcRGB;
 431                GLenum oldBlendDst = ctx->Color.BlendDstRGB;
 432                GLenum oldLogicOp = ctx->Color.LogicOp;
 433                MEMCPY( &ctx->Color, attr->data,
 434                        sizeof(struct gl_colorbuffer_attrib) );
 435                if (ctx->Color.DrawBuffer != oldDrawBuffer) {
 436                   _mesa_DrawBuffer( ctx->Color.DrawBuffer);
 437                }
 438                if ((ctx->Color.BlendSrcRGB != oldBlendSrc ||
 439                     ctx->Color.BlendDstRGB != oldBlendDst) &&
 440                    ctx->Driver.BlendFunc)
 441                   (*ctx->Driver.BlendFunc)( ctx, ctx->Color.BlendSrcRGB,
 442                                             ctx->Color.BlendDstRGB);
 443                if (ctx->Color.LogicOp != oldLogicOp &&
 444                    ctx->Driver.LogicOpcode) {
 445                   ctx->Driver.LogicOpcode( ctx, ctx->Color.LogicOp );
 446                }
 447                if (ctx->Visual->RGBAflag) {
 448                   GLubyte r = (GLint) (ctx->Color.ClearColor[0] * 255.0F);
 449                   GLubyte g = (GLint) (ctx->Color.ClearColor[1] * 255.0F);
 450                   GLubyte b = (GLint) (ctx->Color.ClearColor[2] * 255.0F);
 451                   GLubyte a = (GLint) (ctx->Color.ClearColor[3] * 255.0F);
 452                   (*ctx->Driver.ClearColor)( ctx, r, g, b, a );
 453                   if ((ctx->Color.AlphaFunc != oldAlphaFunc ||
 454                        ctx->Color.AlphaRef != oldAlphaRef) &&
 455                       ctx->Driver.AlphaFunc)
 456                      (*ctx->Driver.AlphaFunc)( ctx, ctx->Color.AlphaFunc,
 457                                                ctx->Color.AlphaRef / 255.0F);
 458                   if (ctx->Driver.ColorMask) {
 459                      (*ctx->Driver.ColorMask)(ctx,
 460                                               ctx->Color.ColorMask[0],
 461                                               ctx->Color.ColorMask[1],
 462                                               ctx->Color.ColorMask[2],
 463                                               ctx->Color.ColorMask[3]);
 464                   }
 465                }
 466                else {
 467                   (*ctx->Driver.ClearIndex)( ctx, ctx->Color.ClearIndex);
 468                }
 469             }
 470             break;
 471          case GL_CURRENT_BIT:
 472             MEMCPY( &ctx->Current, attr->data,
 473                     sizeof(struct gl_current_attrib) );
 474             break;
 475          case GL_DEPTH_BUFFER_BIT:
 476             {
 477                GLenum oldDepthFunc = ctx->Depth.Func;
 478                GLboolean oldDepthMask = ctx->Depth.Mask;
 479                GLfloat oldDepthClear = ctx->Depth.Clear;
 480                MEMCPY( &ctx->Depth, attr->data,
 481                        sizeof(struct gl_depthbuffer_attrib) );
 482                if (ctx->Depth.Func != oldDepthFunc && ctx->Driver.DepthFunc)
 483                   (*ctx->Driver.DepthFunc)( ctx, ctx->Depth.Func );
 484                if (ctx->Depth.Mask != oldDepthMask && ctx->Driver.DepthMask)
 485                   (*ctx->Driver.DepthMask)( ctx, ctx->Depth.Mask );
 486                if (ctx->Depth.Clear != oldDepthClear && ctx->Driver.ClearDepth)
 487                   (*ctx->Driver.ClearDepth)( ctx, ctx->Depth.Clear );
 488             }
 489             break;
 490          case GL_ENABLE_BIT:
 491             {
 492                const struct gl_enable_attrib *enable;
 493                enable = (const struct gl_enable_attrib *) attr->data;
 494
 495 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)          \
 496         if ((VALUE) != (NEWVALUE)) {                    \
 497            _mesa_set_enable( ctx, ENUM, (NEWVALUE) );   \
 498         }
 499
 500                TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
 501                TEST_AND_UPDATE(ctx->Transform.Normalize, enable->AutoNormal, GL_NORMALIZE);
 502                TEST_AND_UPDATE(ctx->Color.BlendEnabled, enable->Blend, GL_BLEND);
 503                {
 504                   GLuint i;
 505                   for (i=0;i<MAX_CLIP_PLANES;i++) {
 506                      if (ctx->Transform.ClipEnabled[i] != enable->ClipPlane[i])
 507                         _mesa_set_enable( ctx, (GLenum) (GL_CLIP_PLANE0 + i), enable->ClipPlane[i] );
 508                   }
 509                }
 510                TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial, GL_COLOR_MATERIAL);
 511                TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
 512                TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
 513                TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
 514                TEST_AND_UPDATE(ctx->Pixel.Convolution1DEnabled, enable->Convolution1D, GL_CONVOLUTION_1D);
 515                TEST_AND_UPDATE(ctx->Pixel.Convolution2DEnabled, enable->Convolution2D, GL_CONVOLUTION_2D);
 516                TEST_AND_UPDATE(ctx->Pixel.Separable2DEnabled, enable->Separable2D, GL_SEPARABLE_2D);
 517                TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
 518                TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
 519                TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
 520                TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple, GL_LINE_STIPPLE);
 521                TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp, GL_INDEX_LOGIC_OP);
 522                TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp, GL_COLOR_LOGIC_OP);
 523                TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
 524                TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
 525                TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
 526                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1, GL_MAP1_TEXTURE_COORD_1);
 527                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2, GL_MAP1_TEXTURE_COORD_2);
 528                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3, GL_MAP1_TEXTURE_COORD_3);
 529                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4, GL_MAP1_TEXTURE_COORD_4);
 530                TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3, GL_MAP1_VERTEX_3);
 531                TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4, GL_MAP1_VERTEX_4);
 532                TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
 533                TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
 534                TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
 535                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1, GL_MAP2_TEXTURE_COORD_1);
 536                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2, GL_MAP2_TEXTURE_COORD_2);
 537                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3, GL_MAP2_TEXTURE_COORD_3);
 538                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4, GL_MAP2_TEXTURE_COORD_4);
 539                TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3, GL_MAP2_VERTEX_3);
 540                TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4, GL_MAP2_VERTEX_4);
 541                TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
 542                TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals, GL_RESCALE_NORMAL_EXT);
 543                TEST_AND_UPDATE(ctx->Pixel.PixelTextureEnabled, enable->PixelTexture, GL_POINT_SMOOTH);
 544                TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth, GL_POINT_SMOOTH);
 545                TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint, GL_POLYGON_OFFSET_POINT);
 546                TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine, GL_POLYGON_OFFSET_LINE);
 547                TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill, GL_POLYGON_OFFSET_FILL);
 548                TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth, GL_POLYGON_SMOOTH);
 549                TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple, GL_POLYGON_STIPPLE);
 550                TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
 551                TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
 552                if (ctx->Texture.Enabled != enable->Texture) {
 553                   ctx->Texture.Enabled = enable->Texture;
 554                   if (ctx->Driver.Enable) {
 555                      if (ctx->Driver.ActiveTexture)
 556                         (*ctx->Driver.ActiveTexture)( ctx, 0 );
 557                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D, (GLboolean) (enable->Texture & TEXTURE0_1D) );
 558                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D, (GLboolean) (enable->Texture & TEXTURE0_2D) );
 559                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D, (GLboolean) (enable->Texture & TEXTURE0_3D) );
 560                      if (ctx->Driver.ActiveTexture)
 561                         (*ctx->Driver.ActiveTexture)( ctx, 1 );
 562                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D, (GLboolean) (enable->Texture & TEXTURE1_1D) );
 563                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D, (GLboolean) (enable->Texture & TEXTURE1_2D) );
 564                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D, (GLboolean) (enable->Texture & TEXTURE1_3D) );
 565                      if (ctx->Driver.ActiveTexture)
 566                         (*ctx->Driver.ActiveTexture)( ctx, ctx->Texture.CurrentUnit );
 567                   }
 568                }
 569 #undef TEST_AND_UPDATE
 570                {
 571                   GLuint i;
 572                   for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 573                      if (ctx->Texture.Unit[i].TexGenEnabled != enable->TexGen[i]) {
 574                         ctx->Texture.Unit[i].TexGenEnabled = enable->TexGen[i];
 575
 576                         /* ctx->Enabled recalculated in state change
 577                            processing */
 578
 579                         if (ctx->Driver.Enable) {
 580                            if (ctx->Driver.ActiveTexture)
 581                               (*ctx->Driver.ActiveTexture)( ctx, i );
 582                            if (enable->TexGen[i] & S_BIT)
 583                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_TRUE);
 584                            else
 585                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_FALSE);
 586                            if (enable->TexGen[i] & T_BIT)
 587                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_TRUE);
 588                            else
 589                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_FALSE);
 590                            if (enable->TexGen[i] & R_BIT)
 591                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_TRUE);
 592                            else
 593                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_FALSE);
 594                            if (enable->TexGen[i] & Q_BIT)
 595                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
 596                            else
 597                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
 598                         }
 599                      }
 600                   }
 601                   if (ctx->Driver.ActiveTexture)
 602                      (*ctx->Driver.ActiveTexture)( ctx, ctx->Texture.CurrentUnit );
 603                }
 604             }
 605             break;
 606          case GL_EVAL_BIT:
 607             MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
 608             break;
 609          case GL_FOG_BIT:
 610             {
 611                GLboolean anyChange = (GLboolean) (memcmp( &ctx->Fog, attr->data, sizeof(struct gl_fog_attrib) ) != 0);
 612                MEMCPY( &ctx->Fog, attr->data, sizeof(struct gl_fog_attrib) );
 613                if (anyChange && ctx->Driver.Fogfv) {
 614                   const GLfloat mode = (GLfloat) ctx->Fog.Mode;
 615                   const GLfloat density = ctx->Fog.Density;
 616                   const GLfloat start = ctx->Fog.Start;
 617                   const GLfloat end = ctx->Fog.End;
 618                   const GLfloat index = ctx->Fog.Index;
 619                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_MODE, &mode);
 620                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_DENSITY, &density );
 621                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_START, &start );
 622                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_END, &end );
 623                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_INDEX, &index );
 624                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_COLOR, ctx->Fog.Color );
 625                }
 626                ctx->Enabled &= ~ENABLE_FOG;
 627                if (ctx->Fog.Enabled) ctx->Enabled |= ENABLE_FOG;
 628             }
 629             break;
 630          case GL_HINT_BIT:
 631             MEMCPY( &ctx->Hint, attr->data, sizeof(struct gl_hint_attrib) );
 632             if (ctx->Driver.Hint) {
 633                (*ctx->Driver.Hint)( ctx, GL_PERSPECTIVE_CORRECTION_HINT,
 634                                     ctx->Hint.PerspectiveCorrection );
 635                (*ctx->Driver.Hint)( ctx, GL_POINT_SMOOTH_HINT,
 636                                     ctx->Hint.PointSmooth);
 637                (*ctx->Driver.Hint)( ctx, GL_LINE_SMOOTH_HINT,
 638                                     ctx->Hint.LineSmooth );
 639                (*ctx->Driver.Hint)( ctx, GL_POLYGON_SMOOTH_HINT,
 640                                     ctx->Hint.PolygonSmooth );
 641                (*ctx->Driver.Hint)( ctx, GL_FOG_HINT, ctx->Hint.Fog );
 642             }
 643             break;
 644          case GL_LIGHTING_BIT:
 645             MEMCPY( &ctx->Light, attr->data, sizeof(struct gl_light_attrib) );
 646             if (ctx->Driver.Enable) {
 647                GLuint i;
 648                for (i = 0; i < MAX_LIGHTS; i++) {
 649                   GLenum light = (GLenum) (GL_LIGHT0 + i);
 650                   (*ctx->Driver.Enable)( ctx, light, ctx->Light.Light[i].Enabled );
 651                }
 652                (*ctx->Driver.Enable)( ctx, GL_LIGHTING, ctx->Light.Enabled );
 653             }
 654             if (ctx->Light.ShadeModel == GL_FLAT)
 655                ctx->TriangleCaps |= DD_FLATSHADE;
 656             else
 657                ctx->TriangleCaps &= ~DD_FLATSHADE;
 658             if (ctx->Driver.ShadeModel)
 659                (*ctx->Driver.ShadeModel)(ctx, ctx->Light.ShadeModel);
 660             ctx->Enabled &= ~ENABLE_LIGHT;
 661             if (ctx->Light.Enabled && !is_empty_list(&ctx->Light.EnabledList))
 662                ctx->Enabled |= ENABLE_LIGHT;
 663             break;
 664          case GL_LINE_BIT:
 665             MEMCPY( &ctx->Line, attr->data, sizeof(struct gl_line_attrib) );
 666             if (ctx->Driver.Enable) {
 667                (*ctx->Driver.Enable)( ctx, GL_LINE_SMOOTH, ctx->Line.SmoothFlag );
 668                (*ctx->Driver.Enable)( ctx, GL_LINE_STIPPLE, ctx->Line.StippleFlag );
 669             }
 670             if (ctx->Driver.LineStipple)
 671                (*ctx->Driver.LineStipple)(ctx, ctx->Line.StippleFactor,
 672                                           ctx->Line.StipplePattern);
 673             if (ctx->Driver.LineWidth)
 674                (*ctx->Driver.LineWidth)(ctx, ctx->Line.Width);
 675             break;
 676          case GL_LIST_BIT:
 677             MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
 678             break;
 679          case GL_PIXEL_MODE_BIT:
 680             MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
 681             break;
 682          case GL_POINT_BIT:
 683             MEMCPY( &ctx->Point, attr->data, sizeof(struct gl_point_attrib) );
 684             if (ctx->Driver.Enable)
 685                (*ctx->Driver.Enable)( ctx, GL_POINT_SMOOTH, ctx->Point.SmoothFlag );
 686             break;
 687          case GL_POLYGON_BIT:
 688             {
 689                GLenum oldFrontMode = ctx->Polygon.FrontMode;
 690                GLenum oldBackMode = ctx->Polygon.BackMode;
 691                MEMCPY( &ctx->Polygon, attr->data,
 692                        sizeof(struct gl_polygon_attrib) );
 693                if ((ctx->Polygon.FrontMode != oldFrontMode ||
 694                     ctx->Polygon.BackMode != oldBackMode) &&
 695                    ctx->Driver.PolygonMode) {
 696                   (*ctx->Driver.PolygonMode)( ctx, GL_FRONT, ctx->Polygon.FrontMode);
 697                   (*ctx->Driver.PolygonMode)( ctx, GL_BACK, ctx->Polygon.BackMode);
 698                }
 699                if (ctx->Driver.CullFace)
 700                   ctx->Driver.CullFace( ctx, ctx->Polygon.CullFaceMode );
 701
 702                if (ctx->Driver.FrontFace)
 703                   ctx->Driver.FrontFace( ctx, ctx->Polygon.FrontFace );
 704
 705                if (ctx->Driver.Enable)
 706                   (*ctx->Driver.Enable)( ctx, GL_POLYGON_SMOOTH, ctx->Polygon.SmoothFlag );
 707             }
 708             break;
 709          case GL_POLYGON_STIPPLE_BIT:
 710             MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
 711             if (ctx->Driver.PolygonStipple)
 712                ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data );
 713             break;
 714          case GL_SCISSOR_BIT:
 715             MEMCPY( &ctx->Scissor, attr->data,
 716                     sizeof(struct gl_scissor_attrib) );
 717             if (ctx->Driver.Enable)
 718                (*ctx->Driver.Enable)( ctx, GL_SCISSOR_TEST, ctx->Scissor.Enabled );
 719             if (ctx->Driver.Scissor)
 720                ctx->Driver.Scissor( ctx, ctx->Scissor.X, ctx->Scissor.Y,
 721                                     ctx->Scissor.Width, ctx->Scissor.Height );
 722             break;
 723          case GL_STENCIL_BUFFER_BIT:
 724             MEMCPY( &ctx->Stencil, attr->data,
 725                     sizeof(struct gl_stencil_attrib) );
 726             if (ctx->Driver.StencilFunc)
 727                (*ctx->Driver.StencilFunc)( ctx, ctx->Stencil.Function,
 728                                    ctx->Stencil.Ref, ctx->Stencil.ValueMask);
 729             if (ctx->Driver.StencilMask)
 730                (*ctx->Driver.StencilMask)( ctx, ctx->Stencil.WriteMask );
 731             if (ctx->Driver.StencilOp)
 732                (*ctx->Driver.StencilOp)( ctx, ctx->Stencil.FailFunc,
 733                               ctx->Stencil.ZFailFunc, ctx->Stencil.ZPassFunc);
 734             if (ctx->Driver.ClearStencil)
 735                (*ctx->Driver.ClearStencil)( ctx, ctx->Stencil.Clear );
 736             if (ctx->Driver.Enable)
 737                (*ctx->Driver.Enable)( ctx, GL_STENCIL_TEST, ctx->Stencil.Enabled );
 738             ctx->TriangleCaps &= ~DD_STENCIL;
 739             if (ctx->Stencil.Enabled)
 740                ctx->TriangleCaps |= DD_STENCIL;
 741
 742             break;
 743          case GL_TRANSFORM_BIT:
 744             MEMCPY( &ctx->Transform, attr->data,
 745                     sizeof(struct gl_transform_attrib) );
 746             if (ctx->Driver.Enable) {
 747                (*ctx->Driver.Enable)( ctx, GL_NORMALIZE, ctx->Transform.Normalize );
 748                (*ctx->Driver.Enable)( ctx, GL_RESCALE_NORMAL_EXT, ctx->Transform.RescaleNormals );
 749             }
 750             ctx->Enabled &= ~(ENABLE_NORMALIZE|ENABLE_RESCALE);
 751             if (ctx->Transform.Normalize) ctx->Enabled |= ENABLE_NORMALIZE;
 752             if (ctx->Transform.RescaleNormals) ctx->Enabled |= ENABLE_RESCALE;
 753             break;
 754          case GL_TEXTURE_BIT:
 755             /* Take care of texture object reference counters */
 756             {
 757                GLuint u;
 758                for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 759                   ctx->Texture.Unit[u].CurrentD[1]->RefCount--;
 760                   ctx->Texture.Unit[u].CurrentD[2]->RefCount--;
 761                   ctx->Texture.Unit[u].CurrentD[3]->RefCount--;
 762                }
 763                MEMCPY( &ctx->Texture, attr->data,
 764                        sizeof(struct gl_texture_attrib) );
 765                /* restore state of the currently bound texture objects */
 766                for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 767                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[1],
 768                                      &(ctx->Texture.Unit[u].Saved1D) );
 769                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[2],
 770                                      &(ctx->Texture.Unit[u].Saved2D) );
 771                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[3],
 772                                      &(ctx->Texture.Unit[u].Saved3D) );
 773                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[1] );
 774                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[2] );
 775                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[3] );
 776
 777                }
 778             }
 779             break;
 780          case GL_VIEWPORT_BIT:
 781          {
 782             struct gl_viewport_attrib *v =
 783                (struct gl_viewport_attrib *)attr->data;
 784
 785             _mesa_Viewport( v->X, v->Y, v->Width, v->Height );
 786             _mesa_DepthRange( v->Near, v->Far );
 787             break;
 788          }
 789          default:
 790             gl_problem( ctx, "Bad attrib flag in PopAttrib");
 791             break;
 792       }
 793
 794       next = attr->next;
 795       FREE( attr->data );
 796       FREE( attr );
 797       attr = next;
 798    }
 799
 800    ctx->NewState = NEW_ALL;
 801 }
 802
 803
 804 #define GL_CLIENT_PACK_BIT (1<<20)
 805 #define GL_CLIENT_UNPACK_BIT (1<<21)
 806
 807
 808 void
 809 _mesa_PushClientAttrib(GLbitfield mask)
 810 {
 811    struct gl_attrib_node *newnode;
 812    struct gl_attrib_node *head;
 813
 814    GET_CURRENT_CONTEXT(ctx);
 815    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPushClientAttrib");
 816
 817    if (ctx->ClientAttribStackDepth>=MAX_CLIENT_ATTRIB_STACK_DEPTH) {
 818       gl_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
 819       return;
 820    }
 821
 822    /* Build linked list of attribute nodes which save all attribute */
 823    /* groups specified by the mask. */
 824    head = NULL;
 825
 826    if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
 827       struct gl_pixelstore_attrib *attr;
 828       /* packing attribs */
 829       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
 830       MEMCPY( attr, &ctx->Pack, sizeof(struct gl_pixelstore_attrib) );
 831       newnode = new_attrib_node( GL_CLIENT_PACK_BIT );
 832       newnode->data = attr;
 833       newnode->next = head;
 834       head = newnode;
 835       /* unpacking attribs */
 836       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
 837       MEMCPY( attr, &ctx->Unpack, sizeof(struct gl_pixelstore_attrib) );
 838       newnode = new_attrib_node( GL_CLIENT_UNPACK_BIT );
 839       newnode->data = attr;
 840       newnode->next = head;
 841       head = newnode;
 842    }
 843    if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
 844       struct gl_array_attrib *attr;
 845       attr = MALLOC_STRUCT( gl_array_attrib );
 846       MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
 847       newnode = new_attrib_node( GL_CLIENT_VERTEX_ARRAY_BIT );
 848       newnode->data = attr;
 849       newnode->next = head;
 850       head = newnode;
 851    }
 852
 853    ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
 854    ctx->ClientAttribStackDepth++;
 855 }
 856
 857
 858
 859
 860 void
 861 _mesa_PopClientAttrib(void)
 862 {
 863    struct gl_attrib_node *attr, *next;
 864
 865    GET_CURRENT_CONTEXT(ctx);
 866    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPopClientAttrib");
 867
 868    if (ctx->ClientAttribStackDepth==0) {
 869       gl_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
 870       return;
 871    }
 872
 873    ctx->ClientAttribStackDepth--;
 874    attr = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
 875
 876    while (attr) {
 877       switch (attr->kind) {
 878          case GL_CLIENT_PACK_BIT:
 879             MEMCPY( &ctx->Pack, attr->data,
 880                     sizeof(struct gl_pixelstore_attrib) );
 881             break;
 882          case GL_CLIENT_UNPACK_BIT:
 883             MEMCPY( &ctx->Unpack, attr->data,
 884                     sizeof(struct gl_pixelstore_attrib) );
 885             break;
 886          case GL_CLIENT_VERTEX_ARRAY_BIT:
 887             MEMCPY( &ctx->Array, attr->data,
 888                     sizeof(struct gl_array_attrib) );
 889             break;
 890          default:
 891             gl_problem( ctx, "Bad attrib flag in PopClientAttrib");
 892             break;
 893       }
 894
 895       next = attr->next;
 896       FREE( attr->data );
 897       FREE( attr );
 898       attr = next;
 899    }
 900
 901    ctx->NewState = NEW_ALL;
 902 }
 903
 904
 905