src/mesa/main/attrib.c

   1 /* $Id: attrib.c,v 1.24 2000/07/05 22:26:43 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.3
   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          copy_texobj_state(&attr->Unit[u].SavedCubeMap, attr->Unit[u].CurrentCubeMap);
 363       }
 364       newnode = new_attrib_node( GL_TEXTURE_BIT );
 365       newnode->data = attr;
 366       newnode->next = head;
 367       head = newnode;
 368    }
 369
 370    if (mask & GL_TRANSFORM_BIT) {
 371       struct gl_transform_attrib *attr;
 372       attr = MALLOC_STRUCT( gl_transform_attrib );
 373       MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
 374       newnode = new_attrib_node( GL_TRANSFORM_BIT );
 375       newnode->data = attr;
 376       newnode->next = head;
 377       head = newnode;
 378    }
 379
 380    if (mask & GL_VIEWPORT_BIT) {
 381       struct gl_viewport_attrib *attr;
 382       attr = MALLOC_STRUCT( gl_viewport_attrib );
 383       MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
 384       newnode = new_attrib_node( GL_VIEWPORT_BIT );
 385       newnode->data = attr;
 386       newnode->next = head;
 387       head = newnode;
 388    }
 389
 390    ctx->AttribStack[ctx->AttribStackDepth] = head;
 391    ctx->AttribStackDepth++;
 392 }
 393
 394
 395
 396 /*
 397  * This function is kind of long just because we have to call a lot
 398  * of device driver functions to update device driver state.
 399  */
 400 void
 401 _mesa_PopAttrib(void)
 402 {
 403    struct gl_attrib_node *attr, *next;
 404    GET_CURRENT_CONTEXT(ctx);
 405
 406    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPopAttrib");
 407
 408
 409    if (ctx->AttribStackDepth==0) {
 410       gl_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
 411       return;
 412    }
 413
 414    ctx->AttribStackDepth--;
 415    attr = ctx->AttribStack[ctx->AttribStackDepth];
 416
 417    while (attr) {
 418
 419       if (MESA_VERBOSE&VERBOSE_API)
 420          fprintf(stderr, "glPopAttrib %s\n", gl_lookup_enum_by_nr(attr->kind));
 421
 422       switch (attr->kind) {
 423          case GL_ACCUM_BUFFER_BIT:
 424             MEMCPY( &ctx->Accum, attr->data, sizeof(struct gl_accum_attrib) );
 425             break;
 426          case GL_COLOR_BUFFER_BIT:
 427             {
 428                GLenum oldDrawBuffer = ctx->Color.DrawBuffer;
 429                GLenum oldAlphaFunc = ctx->Color.AlphaFunc;
 430                GLubyte oldAlphaRef = ctx->Color.AlphaRef;
 431                GLenum oldBlendSrc = ctx->Color.BlendSrcRGB;
 432                GLenum oldBlendDst = ctx->Color.BlendDstRGB;
 433                GLenum oldLogicOp = ctx->Color.LogicOp;
 434                MEMCPY( &ctx->Color, attr->data,
 435                        sizeof(struct gl_colorbuffer_attrib) );
 436                if (ctx->Color.DrawBuffer != oldDrawBuffer) {
 437                   _mesa_DrawBuffer( ctx->Color.DrawBuffer);
 438                }
 439                if ((ctx->Color.BlendSrcRGB != oldBlendSrc ||
 440                     ctx->Color.BlendDstRGB != oldBlendDst) &&
 441                    ctx->Driver.BlendFunc)
 442                   (*ctx->Driver.BlendFunc)( ctx, ctx->Color.BlendSrcRGB,
 443                                             ctx->Color.BlendDstRGB);
 444                if (ctx->Color.LogicOp != oldLogicOp &&
 445                    ctx->Driver.LogicOpcode) {
 446                   ctx->Driver.LogicOpcode( ctx, ctx->Color.LogicOp );
 447                }
 448                if (ctx->Visual->RGBAflag) {
 449                   GLubyte r = (GLint) (ctx->Color.ClearColor[0] * 255.0F);
 450                   GLubyte g = (GLint) (ctx->Color.ClearColor[1] * 255.0F);
 451                   GLubyte b = (GLint) (ctx->Color.ClearColor[2] * 255.0F);
 452                   GLubyte a = (GLint) (ctx->Color.ClearColor[3] * 255.0F);
 453                   (*ctx->Driver.ClearColor)( ctx, r, g, b, a );
 454                   if ((ctx->Color.AlphaFunc != oldAlphaFunc ||
 455                        ctx->Color.AlphaRef != oldAlphaRef) &&
 456                       ctx->Driver.AlphaFunc)
 457                      (*ctx->Driver.AlphaFunc)( ctx, ctx->Color.AlphaFunc,
 458                                                ctx->Color.AlphaRef / 255.0F);
 459                   if (ctx->Driver.ColorMask) {
 460                      (*ctx->Driver.ColorMask)(ctx,
 461                                               ctx->Color.ColorMask[0],
 462                                               ctx->Color.ColorMask[1],
 463                                               ctx->Color.ColorMask[2],
 464                                               ctx->Color.ColorMask[3]);
 465                   }
 466                }
 467                else {
 468                   (*ctx->Driver.ClearIndex)( ctx, ctx->Color.ClearIndex);
 469                }
 470             }
 471             break;
 472          case GL_CURRENT_BIT:
 473             MEMCPY( &ctx->Current, attr->data,
 474                     sizeof(struct gl_current_attrib) );
 475             break;
 476          case GL_DEPTH_BUFFER_BIT:
 477             {
 478                GLenum oldDepthFunc = ctx->Depth.Func;
 479                GLboolean oldDepthMask = ctx->Depth.Mask;
 480                GLfloat oldDepthClear = ctx->Depth.Clear;
 481                MEMCPY( &ctx->Depth, attr->data,
 482                        sizeof(struct gl_depthbuffer_attrib) );
 483                if (ctx->Depth.Func != oldDepthFunc && ctx->Driver.DepthFunc)
 484                   (*ctx->Driver.DepthFunc)( ctx, ctx->Depth.Func );
 485                if (ctx->Depth.Mask != oldDepthMask && ctx->Driver.DepthMask)
 486                   (*ctx->Driver.DepthMask)( ctx, ctx->Depth.Mask );
 487                if (ctx->Depth.Clear != oldDepthClear && ctx->Driver.ClearDepth)
 488                   (*ctx->Driver.ClearDepth)( ctx, ctx->Depth.Clear );
 489             }
 490             break;
 491          case GL_ENABLE_BIT:
 492             {
 493                const struct gl_enable_attrib *enable;
 494                enable = (const struct gl_enable_attrib *) attr->data;
 495
 496 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)          \
 497         if ((VALUE) != (NEWVALUE)) {                    \
 498            _mesa_set_enable( ctx, ENUM, (NEWVALUE) );   \
 499         }
 500
 501                TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
 502                TEST_AND_UPDATE(ctx->Transform.Normalize, enable->AutoNormal, GL_NORMALIZE);
 503                TEST_AND_UPDATE(ctx->Color.BlendEnabled, enable->Blend, GL_BLEND);
 504                {
 505                   GLuint i;
 506                   for (i=0;i<MAX_CLIP_PLANES;i++) {
 507                      if (ctx->Transform.ClipEnabled[i] != enable->ClipPlane[i])
 508                         _mesa_set_enable( ctx, (GLenum) (GL_CLIP_PLANE0 + i), enable->ClipPlane[i] );
 509                   }
 510                }
 511                TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial, GL_COLOR_MATERIAL);
 512                TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
 513                TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
 514                TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
 515                TEST_AND_UPDATE(ctx->Pixel.Convolution1DEnabled, enable->Convolution1D, GL_CONVOLUTION_1D);
 516                TEST_AND_UPDATE(ctx->Pixel.Convolution2DEnabled, enable->Convolution2D, GL_CONVOLUTION_2D);
 517                TEST_AND_UPDATE(ctx->Pixel.Separable2DEnabled, enable->Separable2D, GL_SEPARABLE_2D);
 518                TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
 519                TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
 520                TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
 521                TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple, GL_LINE_STIPPLE);
 522                TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp, GL_INDEX_LOGIC_OP);
 523                TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp, GL_COLOR_LOGIC_OP);
 524                TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
 525                TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
 526                TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
 527                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1, GL_MAP1_TEXTURE_COORD_1);
 528                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2, GL_MAP1_TEXTURE_COORD_2);
 529                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3, GL_MAP1_TEXTURE_COORD_3);
 530                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4, GL_MAP1_TEXTURE_COORD_4);
 531                TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3, GL_MAP1_VERTEX_3);
 532                TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4, GL_MAP1_VERTEX_4);
 533                TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
 534                TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
 535                TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
 536                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1, GL_MAP2_TEXTURE_COORD_1);
 537                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2, GL_MAP2_TEXTURE_COORD_2);
 538                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3, GL_MAP2_TEXTURE_COORD_3);
 539                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4, GL_MAP2_TEXTURE_COORD_4);
 540                TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3, GL_MAP2_VERTEX_3);
 541                TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4, GL_MAP2_VERTEX_4);
 542                TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
 543                TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals, GL_RESCALE_NORMAL_EXT);
 544                TEST_AND_UPDATE(ctx->Pixel.PixelTextureEnabled, enable->PixelTexture, GL_POINT_SMOOTH);
 545                TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth, GL_POINT_SMOOTH);
 546                TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint, GL_POLYGON_OFFSET_POINT);
 547                TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine, GL_POLYGON_OFFSET_LINE);
 548                TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill, GL_POLYGON_OFFSET_FILL);
 549                TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth, GL_POLYGON_SMOOTH);
 550                TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple, GL_POLYGON_STIPPLE);
 551                TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
 552                TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
 553                if (ctx->Texture.Enabled != enable->Texture) {
 554                   ctx->Texture.Enabled = enable->Texture;
 555                   if (ctx->Driver.Enable) {
 556                      if (ctx->Driver.ActiveTexture)
 557                         (*ctx->Driver.ActiveTexture)( ctx, 0 );
 558                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D, (GLboolean) (enable->Texture & TEXTURE0_1D) );
 559                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D, (GLboolean) (enable->Texture & TEXTURE0_2D) );
 560                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D, (GLboolean) (enable->Texture & TEXTURE0_3D) );
 561                      if (ctx->Driver.ActiveTexture)
 562                         (*ctx->Driver.ActiveTexture)( ctx, 1 );
 563                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D, (GLboolean) (enable->Texture & TEXTURE1_1D) );
 564                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D, (GLboolean) (enable->Texture & TEXTURE1_2D) );
 565                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D, (GLboolean) (enable->Texture & TEXTURE1_3D) );
 566                      if (ctx->Driver.ActiveTexture)
 567                         (*ctx->Driver.ActiveTexture)( ctx, ctx->Texture.CurrentUnit );
 568                   }
 569                }
 570 #undef TEST_AND_UPDATE
 571                {
 572                   GLuint i;
 573                   for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 574                      if (ctx->Texture.Unit[i].TexGenEnabled != enable->TexGen[i]) {
 575                         ctx->Texture.Unit[i].TexGenEnabled = enable->TexGen[i];
 576
 577                         /* ctx->Enabled recalculated in state change
 578                            processing */
 579
 580                         if (ctx->Driver.Enable) {
 581                            if (ctx->Driver.ActiveTexture)
 582                               (*ctx->Driver.ActiveTexture)( ctx, i );
 583                            if (enable->TexGen[i] & S_BIT)
 584                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_TRUE);
 585                            else
 586                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_FALSE);
 587                            if (enable->TexGen[i] & T_BIT)
 588                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_TRUE);
 589                            else
 590                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_FALSE);
 591                            if (enable->TexGen[i] & R_BIT)
 592                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_TRUE);
 593                            else
 594                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_FALSE);
 595                            if (enable->TexGen[i] & Q_BIT)
 596                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
 597                            else
 598                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
 599                         }
 600                      }
 601                   }
 602                   if (ctx->Driver.ActiveTexture)
 603                      (*ctx->Driver.ActiveTexture)( ctx, ctx->Texture.CurrentUnit );
 604                }
 605             }
 606             break;
 607          case GL_EVAL_BIT:
 608             MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
 609             break;
 610          case GL_FOG_BIT:
 611             {
 612                GLboolean anyChange = (GLboolean) (memcmp( &ctx->Fog, attr->data, sizeof(struct gl_fog_attrib) ) != 0);
 613                MEMCPY( &ctx->Fog, attr->data, sizeof(struct gl_fog_attrib) );
 614                if (anyChange && ctx->Driver.Fogfv) {
 615                   const GLfloat mode = (GLfloat) ctx->Fog.Mode;
 616                   const GLfloat density = ctx->Fog.Density;
 617                   const GLfloat start = ctx->Fog.Start;
 618                   const GLfloat end = ctx->Fog.End;
 619                   const GLfloat index = ctx->Fog.Index;
 620                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_MODE, &mode);
 621                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_DENSITY, &density );
 622                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_START, &start );
 623                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_END, &end );
 624                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_INDEX, &index );
 625                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_COLOR, ctx->Fog.Color );
 626                }
 627                ctx->Enabled &= ~ENABLE_FOG;
 628                if (ctx->Fog.Enabled) ctx->Enabled |= ENABLE_FOG;
 629             }
 630             break;
 631          case GL_HINT_BIT:
 632             MEMCPY( &ctx->Hint, attr->data, sizeof(struct gl_hint_attrib) );
 633             if (ctx->Driver.Hint) {
 634                (*ctx->Driver.Hint)( ctx, GL_PERSPECTIVE_CORRECTION_HINT,
 635                                     ctx->Hint.PerspectiveCorrection );
 636                (*ctx->Driver.Hint)( ctx, GL_POINT_SMOOTH_HINT,
 637                                     ctx->Hint.PointSmooth);
 638                (*ctx->Driver.Hint)( ctx, GL_LINE_SMOOTH_HINT,
 639                                     ctx->Hint.LineSmooth );
 640                (*ctx->Driver.Hint)( ctx, GL_POLYGON_SMOOTH_HINT,
 641                                     ctx->Hint.PolygonSmooth );
 642                (*ctx->Driver.Hint)( ctx, GL_FOG_HINT, ctx->Hint.Fog );
 643             }
 644             break;
 645          case GL_LIGHTING_BIT:
 646             MEMCPY( &ctx->Light, attr->data, sizeof(struct gl_light_attrib) );
 647             if (ctx->Driver.Enable) {
 648                GLuint i;
 649                for (i = 0; i < MAX_LIGHTS; i++) {
 650                   GLenum light = (GLenum) (GL_LIGHT0 + i);
 651                   (*ctx->Driver.Enable)( ctx, light, ctx->Light.Light[i].Enabled );
 652                }
 653                (*ctx->Driver.Enable)( ctx, GL_LIGHTING, ctx->Light.Enabled );
 654             }
 655             if (ctx->Light.ShadeModel == GL_FLAT)
 656                ctx->TriangleCaps |= DD_FLATSHADE;
 657             else
 658                ctx->TriangleCaps &= ~DD_FLATSHADE;
 659             if (ctx->Driver.ShadeModel)
 660                (*ctx->Driver.ShadeModel)(ctx, ctx->Light.ShadeModel);
 661             ctx->Enabled &= ~ENABLE_LIGHT;
 662             if (ctx->Light.Enabled && !is_empty_list(&ctx->Light.EnabledList))
 663                ctx->Enabled |= ENABLE_LIGHT;
 664             break;
 665          case GL_LINE_BIT:
 666             MEMCPY( &ctx->Line, attr->data, sizeof(struct gl_line_attrib) );
 667             if (ctx->Driver.Enable) {
 668                (*ctx->Driver.Enable)( ctx, GL_LINE_SMOOTH, ctx->Line.SmoothFlag );
 669                (*ctx->Driver.Enable)( ctx, GL_LINE_STIPPLE, ctx->Line.StippleFlag );
 670             }
 671             if (ctx->Driver.LineStipple)
 672                (*ctx->Driver.LineStipple)(ctx, ctx->Line.StippleFactor,
 673                                           ctx->Line.StipplePattern);
 674             if (ctx->Driver.LineWidth)
 675                (*ctx->Driver.LineWidth)(ctx, ctx->Line.Width);
 676             break;
 677          case GL_LIST_BIT:
 678             MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
 679             break;
 680          case GL_PIXEL_MODE_BIT:
 681             MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
 682             break;
 683          case GL_POINT_BIT:
 684             MEMCPY( &ctx->Point, attr->data, sizeof(struct gl_point_attrib) );
 685             if (ctx->Driver.Enable)
 686                (*ctx->Driver.Enable)( ctx, GL_POINT_SMOOTH, ctx->Point.SmoothFlag );
 687             break;
 688          case GL_POLYGON_BIT:
 689             {
 690                GLenum oldFrontMode = ctx->Polygon.FrontMode;
 691                GLenum oldBackMode = ctx->Polygon.BackMode;
 692                MEMCPY( &ctx->Polygon, attr->data,
 693                        sizeof(struct gl_polygon_attrib) );
 694                if ((ctx->Polygon.FrontMode != oldFrontMode ||
 695                     ctx->Polygon.BackMode != oldBackMode) &&
 696                    ctx->Driver.PolygonMode) {
 697                   (*ctx->Driver.PolygonMode)( ctx, GL_FRONT, ctx->Polygon.FrontMode);
 698                   (*ctx->Driver.PolygonMode)( ctx, GL_BACK, ctx->Polygon.BackMode);
 699                }
 700                if (ctx->Driver.CullFace)
 701                   ctx->Driver.CullFace( ctx, ctx->Polygon.CullFaceMode );
 702
 703                if (ctx->Driver.FrontFace)
 704                   ctx->Driver.FrontFace( ctx, ctx->Polygon.FrontFace );
 705
 706                if (ctx->Driver.Enable)
 707                   (*ctx->Driver.Enable)( ctx, GL_POLYGON_SMOOTH, ctx->Polygon.SmoothFlag );
 708             }
 709             break;
 710          case GL_POLYGON_STIPPLE_BIT:
 711             MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
 712             if (ctx->Driver.PolygonStipple)
 713                ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data );
 714             break;
 715          case GL_SCISSOR_BIT:
 716             MEMCPY( &ctx->Scissor, attr->data,
 717                     sizeof(struct gl_scissor_attrib) );
 718             if (ctx->Driver.Enable)
 719                (*ctx->Driver.Enable)( ctx, GL_SCISSOR_TEST, ctx->Scissor.Enabled );
 720             if (ctx->Driver.Scissor)
 721                ctx->Driver.Scissor( ctx, ctx->Scissor.X, ctx->Scissor.Y,
 722                                     ctx->Scissor.Width, ctx->Scissor.Height );
 723             break;
 724          case GL_STENCIL_BUFFER_BIT:
 725             MEMCPY( &ctx->Stencil, attr->data,
 726                     sizeof(struct gl_stencil_attrib) );
 727             if (ctx->Driver.StencilFunc)
 728                (*ctx->Driver.StencilFunc)( ctx, ctx->Stencil.Function,
 729                                    ctx->Stencil.Ref, ctx->Stencil.ValueMask);
 730             if (ctx->Driver.StencilMask)
 731                (*ctx->Driver.StencilMask)( ctx, ctx->Stencil.WriteMask );
 732             if (ctx->Driver.StencilOp)
 733                (*ctx->Driver.StencilOp)( ctx, ctx->Stencil.FailFunc,
 734                               ctx->Stencil.ZFailFunc, ctx->Stencil.ZPassFunc);
 735             if (ctx->Driver.ClearStencil)
 736                (*ctx->Driver.ClearStencil)( ctx, ctx->Stencil.Clear );
 737             if (ctx->Driver.Enable)
 738                (*ctx->Driver.Enable)( ctx, GL_STENCIL_TEST, ctx->Stencil.Enabled );
 739             ctx->TriangleCaps &= ~DD_STENCIL;
 740             if (ctx->Stencil.Enabled)
 741                ctx->TriangleCaps |= DD_STENCIL;
 742
 743             break;
 744          case GL_TRANSFORM_BIT:
 745             MEMCPY( &ctx->Transform, attr->data,
 746                     sizeof(struct gl_transform_attrib) );
 747             if (ctx->Driver.Enable) {
 748                (*ctx->Driver.Enable)( ctx, GL_NORMALIZE, ctx->Transform.Normalize );
 749                (*ctx->Driver.Enable)( ctx, GL_RESCALE_NORMAL_EXT, ctx->Transform.RescaleNormals );
 750             }
 751             ctx->Enabled &= ~(ENABLE_NORMALIZE|ENABLE_RESCALE);
 752             if (ctx->Transform.Normalize) ctx->Enabled |= ENABLE_NORMALIZE;
 753             if (ctx->Transform.RescaleNormals) ctx->Enabled |= ENABLE_RESCALE;
 754             break;
 755          case GL_TEXTURE_BIT:
 756             /* Take care of texture object reference counters */
 757             {
 758                GLuint u;
 759                for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 760                   ctx->Texture.Unit[u].CurrentD[1]->RefCount--;
 761                   ctx->Texture.Unit[u].CurrentD[2]->RefCount--;
 762                   ctx->Texture.Unit[u].CurrentD[3]->RefCount--;
 763                }
 764                MEMCPY( &ctx->Texture, attr->data,
 765                        sizeof(struct gl_texture_attrib) );
 766                /* restore state of the currently bound texture objects */
 767                for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 768                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[1],
 769                                      &(ctx->Texture.Unit[u].Saved1D) );
 770                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[2],
 771                                      &(ctx->Texture.Unit[u].Saved2D) );
 772                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[3],
 773                                      &(ctx->Texture.Unit[u].Saved3D) );
 774                   copy_texobj_state( ctx->Texture.Unit[u].CurrentCubeMap,
 775                                      &(ctx->Texture.Unit[u].SavedCubeMap) );
 776
 777                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[1] );
 778                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[2] );
 779                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[3] );
 780                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentCubeMap );
 781
 782                }
 783             }
 784             break;
 785          case GL_VIEWPORT_BIT:
 786          {
 787             struct gl_viewport_attrib *v =
 788                (struct gl_viewport_attrib *)attr->data;
 789
 790             _mesa_Viewport( v->X, v->Y, v->Width, v->Height );
 791             _mesa_DepthRange( v->Near, v->Far );
 792             break;
 793          }
 794          default:
 795             gl_problem( ctx, "Bad attrib flag in PopAttrib");
 796             break;
 797       }
 798
 799       next = attr->next;
 800       FREE( attr->data );
 801       FREE( attr );
 802       attr = next;
 803    }
 804
 805    ctx->NewState = NEW_ALL;
 806 }
 807
 808
 809 #define GL_CLIENT_PACK_BIT (1<<20)
 810 #define GL_CLIENT_UNPACK_BIT (1<<21)
 811
 812
 813 void
 814 _mesa_PushClientAttrib(GLbitfield mask)
 815 {
 816    struct gl_attrib_node *newnode;
 817    struct gl_attrib_node *head;
 818
 819    GET_CURRENT_CONTEXT(ctx);
 820    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPushClientAttrib");
 821
 822    if (ctx->ClientAttribStackDepth>=MAX_CLIENT_ATTRIB_STACK_DEPTH) {
 823       gl_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
 824       return;
 825    }
 826
 827    /* Build linked list of attribute nodes which save all attribute */
 828    /* groups specified by the mask. */
 829    head = NULL;
 830
 831    if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
 832       struct gl_pixelstore_attrib *attr;
 833       /* packing attribs */
 834       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
 835       MEMCPY( attr, &ctx->Pack, sizeof(struct gl_pixelstore_attrib) );
 836       newnode = new_attrib_node( GL_CLIENT_PACK_BIT );
 837       newnode->data = attr;
 838       newnode->next = head;
 839       head = newnode;
 840       /* unpacking attribs */
 841       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
 842       MEMCPY( attr, &ctx->Unpack, sizeof(struct gl_pixelstore_attrib) );
 843       newnode = new_attrib_node( GL_CLIENT_UNPACK_BIT );
 844       newnode->data = attr;
 845       newnode->next = head;
 846       head = newnode;
 847    }
 848    if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
 849       struct gl_array_attrib *attr;
 850       attr = MALLOC_STRUCT( gl_array_attrib );
 851       MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
 852       newnode = new_attrib_node( GL_CLIENT_VERTEX_ARRAY_BIT );
 853       newnode->data = attr;
 854       newnode->next = head;
 855       head = newnode;
 856    }
 857
 858    ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
 859    ctx->ClientAttribStackDepth++;
 860 }
 861
 862
 863
 864
 865 void
 866 _mesa_PopClientAttrib(void)
 867 {
 868    struct gl_attrib_node *attr, *next;
 869
 870    GET_CURRENT_CONTEXT(ctx);
 871    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPopClientAttrib");
 872
 873    if (ctx->ClientAttribStackDepth==0) {
 874       gl_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
 875       return;
 876    }
 877
 878    ctx->ClientAttribStackDepth--;
 879    attr = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
 880
 881    while (attr) {
 882       switch (attr->kind) {
 883          case GL_CLIENT_PACK_BIT:
 884             MEMCPY( &ctx->Pack, attr->data,
 885                     sizeof(struct gl_pixelstore_attrib) );
 886             break;
 887          case GL_CLIENT_UNPACK_BIT:
 888             MEMCPY( &ctx->Unpack, attr->data,
 889                     sizeof(struct gl_pixelstore_attrib) );
 890             break;
 891          case GL_CLIENT_VERTEX_ARRAY_BIT:
 892             MEMCPY( &ctx->Array, attr->data,
 893                     sizeof(struct gl_array_attrib) );
 894             break;
 895          default:
 896             gl_problem( ctx, "Bad attrib flag in PopClientAttrib");
 897             break;
 898       }
 899
 900       next = attr->next;
 901       FREE( attr->data );
 902       FREE( attr );
 903       attr = next;
 904    }
 905
 906    ctx->NewState = NEW_ALL;
 907 }
 908
 909
 910