src/mesa/main/attrib.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.1
   4  *
   5  * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #include "glheader.h"
  26 #include "imports.h"
  27 #include "accum.h"
  28 #include "arrayobj.h"
  29 #include "attrib.h"
  30 #include "blend.h"
  31 #include "buffers.h"
  32 #include "bufferobj.h"
  33 #include "colormac.h"
  34 #include "colortab.h"
  35 #include "context.h"
  36 #include "depth.h"
  37 #include "enable.h"
  38 #include "enums.h"
  39 #include "fog.h"
  40 #include "hint.h"
  41 #include "light.h"
  42 #include "lines.h"
  43 #include "matrix.h"
  44 #include "points.h"
  45 #include "polygon.h"
  46 #include "simple_list.h"
  47 #include "stencil.h"
  48 #include "texobj.h"
  49 #include "texstate.h"
  50 #include "mtypes.h"
  51 #include "math/m_xform.h"
  52
  53
  54 /**
  55  * Allocate a new attribute state node.  These nodes have a
  56  * "kind" value and a pointer to a struct of state data.
  57  */
  58 static struct gl_attrib_node *
  59 new_attrib_node( GLbitfield kind )
  60 {
  61    struct gl_attrib_node *an = MALLOC_STRUCT(gl_attrib_node);
  62    if (an) {
  63       an->kind = kind;
  64    }
  65    return an;
  66 }
  67
  68
  69 void GLAPIENTRY
  70 _mesa_PushAttrib(GLbitfield mask)
  71 {
  72    struct gl_attrib_node *newnode;
  73    struct gl_attrib_node *head;
  74
  75    GET_CURRENT_CONTEXT(ctx);
  76    ASSERT_OUTSIDE_BEGIN_END(ctx);
  77
  78    if (MESA_VERBOSE & VERBOSE_API)
  79       _mesa_debug(ctx, "glPushAttrib %x\n", (int) mask);
  80
  81    if (ctx->AttribStackDepth >= MAX_ATTRIB_STACK_DEPTH) {
  82       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
  83       return;
  84    }
  85
  86    /* Build linked list of attribute nodes which save all attribute */
  87    /* groups specified by the mask. */
  88    head = NULL;
  89
  90    if (mask & GL_ACCUM_BUFFER_BIT) {
  91       struct gl_accum_attrib *attr;
  92       attr = MALLOC_STRUCT( gl_accum_attrib );
  93       MEMCPY( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );
  94       newnode = new_attrib_node( GL_ACCUM_BUFFER_BIT );
  95       newnode->data = attr;
  96       newnode->next = head;
  97       head = newnode;
  98    }
  99
 100    if (mask & GL_COLOR_BUFFER_BIT) {
 101       GLuint i;
 102       struct gl_colorbuffer_attrib *attr;
 103       attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
 104       MEMCPY( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
 105       /* push the Draw FBO's DrawBuffer[] state, not ctx->Color.DrawBuffer[] */
 106       for (i = 0; i < ctx->Const.MaxDrawBuffers; i ++)
 107          attr->DrawBuffer[i] = ctx->DrawBuffer->ColorDrawBuffer[i];
 108       newnode = new_attrib_node( GL_COLOR_BUFFER_BIT );
 109       newnode->data = attr;
 110       newnode->next = head;
 111       head = newnode;
 112    }
 113
 114    if (mask & GL_CURRENT_BIT) {
 115       struct gl_current_attrib *attr;
 116       FLUSH_CURRENT( ctx, 0 );
 117       attr = MALLOC_STRUCT( gl_current_attrib );
 118       MEMCPY( attr, &ctx->Current, sizeof(struct gl_current_attrib) );
 119       newnode = new_attrib_node( GL_CURRENT_BIT );
 120       newnode->data = attr;
 121       newnode->next = head;
 122       head = newnode;
 123    }
 124
 125    if (mask & GL_DEPTH_BUFFER_BIT) {
 126       struct gl_depthbuffer_attrib *attr;
 127       attr = MALLOC_STRUCT( gl_depthbuffer_attrib );
 128       MEMCPY( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );
 129       newnode = new_attrib_node( GL_DEPTH_BUFFER_BIT );
 130       newnode->data = attr;
 131       newnode->next = head;
 132       head = newnode;
 133    }
 134
 135    if (mask & GL_ENABLE_BIT) {
 136       struct gl_enable_attrib *attr;
 137       GLuint i;
 138       attr = MALLOC_STRUCT( gl_enable_attrib );
 139       /* Copy enable flags from all other attributes into the enable struct. */
 140       attr->AlphaTest = ctx->Color.AlphaEnabled;
 141       attr->AutoNormal = ctx->Eval.AutoNormal;
 142       attr->Blend = ctx->Color.BlendEnabled;
 143       attr->ClipPlanes = ctx->Transform.ClipPlanesEnabled;
 144       attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;
 145       for (i = 0; i < COLORTABLE_MAX; i++) {
 146          attr->ColorTable[i] = ctx->Pixel.ColorTableEnabled[i];
 147       }
 148       attr->Convolution1D = ctx->Pixel.Convolution1DEnabled;
 149       attr->Convolution2D = ctx->Pixel.Convolution2DEnabled;
 150       attr->Separable2D = ctx->Pixel.Separable2DEnabled;
 151       attr->CullFace = ctx->Polygon.CullFlag;
 152       attr->DepthTest = ctx->Depth.Test;
 153       attr->Dither = ctx->Color.DitherFlag;
 154       attr->Fog = ctx->Fog.Enabled;
 155       for (i = 0; i < ctx->Const.MaxLights; i++) {
 156          attr->Light[i] = ctx->Light.Light[i].Enabled;
 157       }
 158       attr->Lighting = ctx->Light.Enabled;
 159       attr->LineSmooth = ctx->Line.SmoothFlag;
 160       attr->LineStipple = ctx->Line.StippleFlag;
 161       attr->Histogram = ctx->Pixel.HistogramEnabled;
 162       attr->MinMax = ctx->Pixel.MinMaxEnabled;
 163       attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
 164       attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
 165       attr->Map1Color4 = ctx->Eval.Map1Color4;
 166       attr->Map1Index = ctx->Eval.Map1Index;
 167       attr->Map1Normal = ctx->Eval.Map1Normal;
 168       attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
 169       attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
 170       attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
 171       attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
 172       attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
 173       attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
 174       MEMCPY(attr->Map1Attrib, ctx->Eval.Map1Attrib, sizeof(ctx->Eval.Map1Attrib));
 175       attr->Map2Color4 = ctx->Eval.Map2Color4;
 176       attr->Map2Index = ctx->Eval.Map2Index;
 177       attr->Map2Normal = ctx->Eval.Map2Normal;
 178       attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
 179       attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
 180       attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
 181       attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
 182       attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
 183       attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
 184       MEMCPY(attr->Map2Attrib, ctx->Eval.Map2Attrib, sizeof(ctx->Eval.Map2Attrib));
 185       attr->Normalize = ctx->Transform.Normalize;
 186       attr->RasterPositionUnclipped = ctx->Transform.RasterPositionUnclipped;
 187       attr->PointSmooth = ctx->Point.SmoothFlag;
 188       attr->PointSprite = ctx->Point.PointSprite;
 189       attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;
 190       attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;
 191       attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;
 192       attr->PolygonSmooth = ctx->Polygon.SmoothFlag;
 193       attr->PolygonStipple = ctx->Polygon.StippleFlag;
 194       attr->RescaleNormals = ctx->Transform.RescaleNormals;
 195       attr->Scissor = ctx->Scissor.Enabled;
 196       attr->Stencil = ctx->Stencil.Enabled;
 197       attr->StencilTwoSide = ctx->Stencil.TestTwoSide;
 198       attr->MultisampleEnabled = ctx->Multisample.Enabled;
 199       attr->SampleAlphaToCoverage = ctx->Multisample.SampleAlphaToCoverage;
 200       attr->SampleAlphaToOne = ctx->Multisample.SampleAlphaToOne;
 201       attr->SampleCoverage = ctx->Multisample.SampleCoverage;
 202       attr->SampleCoverageInvert = ctx->Multisample.SampleCoverageInvert;
 203       for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 204          attr->Texture[i] = ctx->Texture.Unit[i].Enabled;
 205          attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
 206          attr->TextureColorTable[i] = ctx->Texture.Unit[i].ColorTableEnabled;
 207       }
 208       /* GL_NV_vertex_program */
 209       attr->VertexProgram = ctx->VertexProgram.Enabled;
 210       attr->VertexProgramPointSize = ctx->VertexProgram.PointSizeEnabled;
 211       attr->VertexProgramTwoSide = ctx->VertexProgram.TwoSideEnabled;
 212       newnode = new_attrib_node( GL_ENABLE_BIT );
 213       newnode->data = attr;
 214       newnode->next = head;
 215       head = newnode;
 216    }
 217
 218    if (mask & GL_EVAL_BIT) {
 219       struct gl_eval_attrib *attr;
 220       attr = MALLOC_STRUCT( gl_eval_attrib );
 221       MEMCPY( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
 222       newnode = new_attrib_node( GL_EVAL_BIT );
 223       newnode->data = attr;
 224       newnode->next = head;
 225       head = newnode;
 226    }
 227
 228    if (mask & GL_FOG_BIT) {
 229       struct gl_fog_attrib *attr;
 230       attr = MALLOC_STRUCT( gl_fog_attrib );
 231       MEMCPY( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
 232       newnode = new_attrib_node( GL_FOG_BIT );
 233       newnode->data = attr;
 234       newnode->next = head;
 235       head = newnode;
 236    }
 237
 238    if (mask & GL_HINT_BIT) {
 239       struct gl_hint_attrib *attr;
 240       attr = MALLOC_STRUCT( gl_hint_attrib );
 241       MEMCPY( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
 242       newnode = new_attrib_node( GL_HINT_BIT );
 243       newnode->data = attr;
 244       newnode->next = head;
 245       head = newnode;
 246    }
 247
 248    if (mask & GL_LIGHTING_BIT) {
 249       struct gl_light_attrib *attr;
 250       FLUSH_CURRENT(ctx, 0);    /* flush material changes */
 251       attr = MALLOC_STRUCT( gl_light_attrib );
 252       MEMCPY( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
 253       newnode = new_attrib_node( GL_LIGHTING_BIT );
 254       newnode->data = attr;
 255       newnode->next = head;
 256       head = newnode;
 257    }
 258
 259    if (mask & GL_LINE_BIT) {
 260       struct gl_line_attrib *attr;
 261       attr = MALLOC_STRUCT( gl_line_attrib );
 262       MEMCPY( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
 263       newnode = new_attrib_node( GL_LINE_BIT );
 264       newnode->data = attr;
 265       newnode->next = head;
 266       head = newnode;
 267    }
 268
 269    if (mask & GL_LIST_BIT) {
 270       struct gl_list_attrib *attr;
 271       attr = MALLOC_STRUCT( gl_list_attrib );
 272       MEMCPY( attr, &ctx->List, sizeof(struct gl_list_attrib) );
 273       newnode = new_attrib_node( GL_LIST_BIT );
 274       newnode->data = attr;
 275       newnode->next = head;
 276       head = newnode;
 277    }
 278
 279    if (mask & GL_PIXEL_MODE_BIT) {
 280       struct gl_pixel_attrib *attr;
 281       attr = MALLOC_STRUCT( gl_pixel_attrib );
 282       MEMCPY( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
 283       /* push the Read FBO's ReadBuffer state, not ctx->Pixel.ReadBuffer */
 284       attr->ReadBuffer = ctx->ReadBuffer->ColorReadBuffer;
 285       newnode = new_attrib_node( GL_PIXEL_MODE_BIT );
 286       newnode->data = attr;
 287       newnode->next = head;
 288       head = newnode;
 289    }
 290
 291    if (mask & GL_POINT_BIT) {
 292       struct gl_point_attrib *attr;
 293       attr = MALLOC_STRUCT( gl_point_attrib );
 294       MEMCPY( attr, &ctx->Point, sizeof(struct gl_point_attrib) );
 295       newnode = new_attrib_node( GL_POINT_BIT );
 296       newnode->data = attr;
 297       newnode->next = head;
 298       head = newnode;
 299    }
 300
 301    if (mask & GL_POLYGON_BIT) {
 302       struct gl_polygon_attrib *attr;
 303       attr = MALLOC_STRUCT( gl_polygon_attrib );
 304       MEMCPY( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );
 305       newnode = new_attrib_node( GL_POLYGON_BIT );
 306       newnode->data = attr;
 307       newnode->next = head;
 308       head = newnode;
 309    }
 310
 311    if (mask & GL_POLYGON_STIPPLE_BIT) {
 312       GLuint *stipple;
 313       stipple = (GLuint *) MALLOC( 32*sizeof(GLuint) );
 314       MEMCPY( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );
 315       newnode = new_attrib_node( GL_POLYGON_STIPPLE_BIT );
 316       newnode->data = stipple;
 317       newnode->next = head;
 318       head = newnode;
 319    }
 320
 321    if (mask & GL_SCISSOR_BIT) {
 322       struct gl_scissor_attrib *attr;
 323       attr = MALLOC_STRUCT( gl_scissor_attrib );
 324       MEMCPY( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );
 325       newnode = new_attrib_node( GL_SCISSOR_BIT );
 326       newnode->data = attr;
 327       newnode->next = head;
 328       head = newnode;
 329    }
 330
 331    if (mask & GL_STENCIL_BUFFER_BIT) {
 332       struct gl_stencil_attrib *attr;
 333       attr = MALLOC_STRUCT( gl_stencil_attrib );
 334       MEMCPY( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );
 335       newnode = new_attrib_node( GL_STENCIL_BUFFER_BIT );
 336       newnode->data = attr;
 337       newnode->next = head;
 338       head = newnode;
 339    }
 340
 341    if (mask & GL_TEXTURE_BIT) {
 342       struct gl_texture_attrib *attr;
 343       GLuint u;
 344
 345       _mesa_lock_context_textures(ctx);
 346       /* Bump the texture object reference counts so that they don't
 347        * inadvertantly get deleted.
 348        */
 349       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 350          ctx->Texture.Unit[u].Current1D->RefCount++;
 351          ctx->Texture.Unit[u].Current2D->RefCount++;
 352          ctx->Texture.Unit[u].Current3D->RefCount++;
 353          ctx->Texture.Unit[u].CurrentCubeMap->RefCount++;
 354          ctx->Texture.Unit[u].CurrentRect->RefCount++;
 355          ctx->Texture.Unit[u].Current1DArray->RefCount++;
 356          ctx->Texture.Unit[u].Current2DArray->RefCount++;
 357       }
 358       attr = MALLOC_STRUCT( gl_texture_attrib );
 359       MEMCPY( attr, &ctx->Texture, sizeof(struct gl_texture_attrib) );
 360       /* copy state of the currently bound texture objects */
 361       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 362          _mesa_copy_texture_object(&attr->Unit[u].Saved1D,
 363                                    attr->Unit[u].Current1D);
 364          _mesa_copy_texture_object(&attr->Unit[u].Saved2D,
 365                                    attr->Unit[u].Current2D);
 366          _mesa_copy_texture_object(&attr->Unit[u].Saved3D,
 367                                    attr->Unit[u].Current3D);
 368          _mesa_copy_texture_object(&attr->Unit[u].SavedCubeMap,
 369                                    attr->Unit[u].CurrentCubeMap);
 370          _mesa_copy_texture_object(&attr->Unit[u].SavedRect,
 371                                    attr->Unit[u].CurrentRect);
 372          _mesa_copy_texture_object(&attr->Unit[u].Saved1DArray,
 373                                    attr->Unit[u].Current1DArray);
 374          _mesa_copy_texture_object(&attr->Unit[u].Saved2DArray,
 375                                    attr->Unit[u].Current2DArray);
 376       }
 377
 378       _mesa_unlock_context_textures(ctx);
 379
 380       newnode = new_attrib_node( GL_TEXTURE_BIT );
 381       newnode->data = attr;
 382       newnode->next = head;
 383       head = newnode;
 384    }
 385
 386    if (mask & GL_TRANSFORM_BIT) {
 387       struct gl_transform_attrib *attr;
 388       attr = MALLOC_STRUCT( gl_transform_attrib );
 389       MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
 390       newnode = new_attrib_node( GL_TRANSFORM_BIT );
 391       newnode->data = attr;
 392       newnode->next = head;
 393       head = newnode;
 394    }
 395
 396    if (mask & GL_VIEWPORT_BIT) {
 397       struct gl_viewport_attrib *attr;
 398       attr = MALLOC_STRUCT( gl_viewport_attrib );
 399       MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
 400       newnode = new_attrib_node( GL_VIEWPORT_BIT );
 401       newnode->data = attr;
 402       newnode->next = head;
 403       head = newnode;
 404    }
 405
 406    /* GL_ARB_multisample */
 407    if (mask & GL_MULTISAMPLE_BIT_ARB) {
 408       struct gl_multisample_attrib *attr;
 409       attr = MALLOC_STRUCT( gl_multisample_attrib );
 410       MEMCPY( attr, &ctx->Multisample, sizeof(struct gl_multisample_attrib) );
 411       newnode = new_attrib_node( GL_MULTISAMPLE_BIT_ARB );
 412       newnode->data = attr;
 413       newnode->next = head;
 414       head = newnode;
 415    }
 416
 417    ctx->AttribStack[ctx->AttribStackDepth] = head;
 418    ctx->AttribStackDepth++;
 419 }
 420
 421
 422
 423 static void
 424 pop_enable_group(GLcontext *ctx, const struct gl_enable_attrib *enable)
 425 {
 426    GLuint i;
 427
 428 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)          \
 429         if ((VALUE) != (NEWVALUE)) {                    \
 430            _mesa_set_enable( ctx, ENUM, (NEWVALUE) );   \
 431         }
 432
 433    TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
 434    TEST_AND_UPDATE(ctx->Color.BlendEnabled, enable->Blend, GL_BLEND);
 435
 436    for (i=0;i<MAX_CLIP_PLANES;i++) {
 437       const GLuint mask = 1 << i;
 438       if ((ctx->Transform.ClipPlanesEnabled & mask) != (enable->ClipPlanes & mask))
 439           _mesa_set_enable(ctx, (GLenum) (GL_CLIP_PLANE0 + i),
 440                            (GLboolean) ((enable->ClipPlanes & mask) ? GL_TRUE : GL_FALSE));
 441    }
 442
 443    TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial,
 444                    GL_COLOR_MATERIAL);
 445    TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled[COLORTABLE_PRECONVOLUTION],
 446                    enable->ColorTable[COLORTABLE_PRECONVOLUTION],
 447                    GL_COLOR_TABLE);
 448    TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled[COLORTABLE_POSTCONVOLUTION],
 449                    enable->ColorTable[COLORTABLE_POSTCONVOLUTION],
 450                    GL_POST_CONVOLUTION_COLOR_TABLE);
 451    TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled[COLORTABLE_POSTCOLORMATRIX],
 452                    enable->ColorTable[COLORTABLE_POSTCOLORMATRIX],
 453                    GL_POST_COLOR_MATRIX_COLOR_TABLE);
 454    TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
 455    TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
 456    TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
 457    TEST_AND_UPDATE(ctx->Pixel.Convolution1DEnabled, enable->Convolution1D,
 458                    GL_CONVOLUTION_1D);
 459    TEST_AND_UPDATE(ctx->Pixel.Convolution2DEnabled, enable->Convolution2D,
 460                    GL_CONVOLUTION_2D);
 461    TEST_AND_UPDATE(ctx->Pixel.Separable2DEnabled, enable->Separable2D,
 462                    GL_SEPARABLE_2D);
 463    TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
 464    TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
 465    TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
 466    TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple,
 467                    GL_LINE_STIPPLE);
 468    TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp,
 469                    GL_INDEX_LOGIC_OP);
 470    TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp,
 471                    GL_COLOR_LOGIC_OP);
 472
 473    TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
 474    TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
 475    TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
 476    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1,
 477                    GL_MAP1_TEXTURE_COORD_1);
 478    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2,
 479                    GL_MAP1_TEXTURE_COORD_2);
 480    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3,
 481                    GL_MAP1_TEXTURE_COORD_3);
 482    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4,
 483                    GL_MAP1_TEXTURE_COORD_4);
 484    TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3,
 485                    GL_MAP1_VERTEX_3);
 486    TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4,
 487                    GL_MAP1_VERTEX_4);
 488    for (i = 0; i < 16; i++) {
 489       TEST_AND_UPDATE(ctx->Eval.Map1Attrib[i], enable->Map1Attrib[i],
 490                       GL_MAP1_VERTEX_ATTRIB0_4_NV + i);
 491    }
 492
 493    TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
 494    TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
 495    TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
 496    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1,
 497                    GL_MAP2_TEXTURE_COORD_1);
 498    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2,
 499                    GL_MAP2_TEXTURE_COORD_2);
 500    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3,
 501                    GL_MAP2_TEXTURE_COORD_3);
 502    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4,
 503                    GL_MAP2_TEXTURE_COORD_4);
 504    TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3,
 505                    GL_MAP2_VERTEX_3);
 506    TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4,
 507                    GL_MAP2_VERTEX_4);
 508    for (i = 0; i < 16; i++) {
 509       TEST_AND_UPDATE(ctx->Eval.Map2Attrib[i], enable->Map2Attrib[i],
 510                       GL_MAP2_VERTEX_ATTRIB0_4_NV + i);
 511    }
 512
 513    TEST_AND_UPDATE(ctx->Eval.AutoNormal, enable->AutoNormal, GL_AUTO_NORMAL);
 514    TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
 515    TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals,
 516                    GL_RESCALE_NORMAL_EXT);
 517    TEST_AND_UPDATE(ctx->Transform.RasterPositionUnclipped,
 518                    enable->RasterPositionUnclipped,
 519                    GL_RASTER_POSITION_UNCLIPPED_IBM);
 520    TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth,
 521                    GL_POINT_SMOOTH);
 522    if (ctx->Extensions.NV_point_sprite || ctx->Extensions.ARB_point_sprite) {
 523       TEST_AND_UPDATE(ctx->Point.PointSprite, enable->PointSprite,
 524                       GL_POINT_SPRITE_NV);
 525    }
 526    TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint,
 527                    GL_POLYGON_OFFSET_POINT);
 528    TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine,
 529                    GL_POLYGON_OFFSET_LINE);
 530    TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill,
 531                    GL_POLYGON_OFFSET_FILL);
 532    TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth,
 533                    GL_POLYGON_SMOOTH);
 534    TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple,
 535                    GL_POLYGON_STIPPLE);
 536    TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
 537    TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
 538    if (ctx->Extensions.EXT_stencil_two_side) {
 539       TEST_AND_UPDATE(ctx->Stencil.TestTwoSide, enable->StencilTwoSide, GL_STENCIL_TEST_TWO_SIDE_EXT);
 540    }
 541    TEST_AND_UPDATE(ctx->Multisample.Enabled, enable->MultisampleEnabled,
 542                    GL_MULTISAMPLE_ARB);
 543    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToCoverage,
 544                    enable->SampleAlphaToCoverage,
 545                    GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
 546    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToOne,
 547                    enable->SampleAlphaToOne,
 548                    GL_SAMPLE_ALPHA_TO_ONE_ARB);
 549    TEST_AND_UPDATE(ctx->Multisample.SampleCoverage,
 550                    enable->SampleCoverage,
 551                    GL_SAMPLE_COVERAGE_ARB);
 552    TEST_AND_UPDATE(ctx->Multisample.SampleCoverageInvert,
 553                    enable->SampleCoverageInvert,
 554                    GL_SAMPLE_COVERAGE_INVERT_ARB);
 555    /* GL_ARB_vertex_program, GL_NV_vertex_program */
 556    TEST_AND_UPDATE(ctx->VertexProgram.Enabled,
 557                    enable->VertexProgram,
 558                    GL_VERTEX_PROGRAM_ARB);
 559    TEST_AND_UPDATE(ctx->VertexProgram.PointSizeEnabled,
 560                    enable->VertexProgramPointSize,
 561                    GL_VERTEX_PROGRAM_POINT_SIZE_ARB);
 562    TEST_AND_UPDATE(ctx->VertexProgram.TwoSideEnabled,
 563                    enable->VertexProgramTwoSide,
 564                    GL_VERTEX_PROGRAM_TWO_SIDE_ARB);
 565
 566 #undef TEST_AND_UPDATE
 567
 568    /* texture unit enables */
 569    for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
 570       if (ctx->Texture.Unit[i].Enabled != enable->Texture[i]) {
 571          ctx->Texture.Unit[i].Enabled = enable->Texture[i];
 572          if (ctx->Driver.Enable) {
 573             if (ctx->Driver.ActiveTexture) {
 574                (*ctx->Driver.ActiveTexture)(ctx, i);
 575             }
 576             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D,
 577                              (GLboolean) (enable->Texture[i] & TEXTURE_1D_BIT) );
 578             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D,
 579                              (GLboolean) (enable->Texture[i] & TEXTURE_2D_BIT) );
 580             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D,
 581                              (GLboolean) (enable->Texture[i] & TEXTURE_3D_BIT) );
 582             if (ctx->Extensions.ARB_texture_cube_map)
 583                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_CUBE_MAP_ARB,
 584                           (GLboolean) (enable->Texture[i] & TEXTURE_CUBE_BIT) );
 585             if (ctx->Extensions.NV_texture_rectangle)
 586                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_RECTANGLE_NV,
 587                           (GLboolean) (enable->Texture[i] & TEXTURE_RECT_BIT) );
 588          }
 589       }
 590
 591       if (ctx->Texture.Unit[i].TexGenEnabled != enable->TexGen[i]) {
 592          ctx->Texture.Unit[i].TexGenEnabled = enable->TexGen[i];
 593          if (ctx->Driver.Enable) {
 594             if (ctx->Driver.ActiveTexture) {
 595                (*ctx->Driver.ActiveTexture)(ctx, i);
 596             }
 597             if (enable->TexGen[i] & S_BIT)
 598                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_TRUE);
 599             else
 600                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_FALSE);
 601             if (enable->TexGen[i] & T_BIT)
 602                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_TRUE);
 603             else
 604                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_FALSE);
 605             if (enable->TexGen[i] & R_BIT)
 606                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_TRUE);
 607             else
 608                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_FALSE);
 609             if (enable->TexGen[i] & Q_BIT)
 610                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
 611             else
 612                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
 613          }
 614       }
 615
 616       /* GL_SGI_texture_color_table */
 617       ctx->Texture.Unit[i].ColorTableEnabled = enable->TextureColorTable[i];
 618    }
 619
 620    if (ctx->Driver.ActiveTexture) {
 621       (*ctx->Driver.ActiveTexture)(ctx, ctx->Texture.CurrentUnit);
 622    }
 623 }
 624
 625
 626 static void
 627 pop_texture_group(GLcontext *ctx, const struct gl_texture_attrib *texAttrib)
 628 {
 629    GLuint u;
 630
 631    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 632       const struct gl_texture_unit *unit = &texAttrib->Unit[u];
 633       GLuint i;
 634
 635       _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + u);
 636       _mesa_set_enable(ctx, GL_TEXTURE_1D,
 637                        (unit->Enabled & TEXTURE_1D_BIT) ? GL_TRUE : GL_FALSE);
 638       _mesa_set_enable(ctx, GL_TEXTURE_2D,
 639                        (unit->Enabled & TEXTURE_2D_BIT) ? GL_TRUE : GL_FALSE);
 640       _mesa_set_enable(ctx, GL_TEXTURE_3D,
 641                        (unit->Enabled & TEXTURE_3D_BIT) ? GL_TRUE : GL_FALSE);
 642       if (ctx->Extensions.ARB_texture_cube_map) {
 643          _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP_ARB,
 644                      (unit->Enabled & TEXTURE_CUBE_BIT) ? GL_TRUE : GL_FALSE);
 645       }
 646       if (ctx->Extensions.NV_texture_rectangle) {
 647          _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_NV,
 648                      (unit->Enabled & TEXTURE_RECT_BIT) ? GL_TRUE : GL_FALSE);
 649       }
 650       if (ctx->Extensions.SGI_texture_color_table) {
 651          _mesa_set_enable(ctx, GL_TEXTURE_COLOR_TABLE_SGI,
 652                           unit->ColorTableEnabled);
 653       }
 654       _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->EnvMode);
 655       _mesa_TexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, unit->EnvColor);
 656       _mesa_TexGeni(GL_S, GL_TEXTURE_GEN_MODE, unit->GenModeS);
 657       _mesa_TexGeni(GL_T, GL_TEXTURE_GEN_MODE, unit->GenModeT);
 658       _mesa_TexGeni(GL_R, GL_TEXTURE_GEN_MODE, unit->GenModeR);
 659       _mesa_TexGeni(GL_Q, GL_TEXTURE_GEN_MODE, unit->GenModeQ);
 660       _mesa_TexGenfv(GL_S, GL_OBJECT_PLANE, unit->ObjectPlaneS);
 661       _mesa_TexGenfv(GL_T, GL_OBJECT_PLANE, unit->ObjectPlaneT);
 662       _mesa_TexGenfv(GL_R, GL_OBJECT_PLANE, unit->ObjectPlaneR);
 663       _mesa_TexGenfv(GL_Q, GL_OBJECT_PLANE, unit->ObjectPlaneQ);
 664       /* Eye plane done differently to avoid re-transformation */
 665       {
 666          struct gl_texture_unit *destUnit = &ctx->Texture.Unit[u];
 667          COPY_4FV(destUnit->EyePlaneS, unit->EyePlaneS);
 668          COPY_4FV(destUnit->EyePlaneT, unit->EyePlaneT);
 669          COPY_4FV(destUnit->EyePlaneR, unit->EyePlaneR);
 670          COPY_4FV(destUnit->EyePlaneQ, unit->EyePlaneQ);
 671          if (ctx->Driver.TexGen) {
 672             ctx->Driver.TexGen(ctx, GL_S, GL_EYE_PLANE, unit->EyePlaneS);
 673             ctx->Driver.TexGen(ctx, GL_T, GL_EYE_PLANE, unit->EyePlaneT);
 674             ctx->Driver.TexGen(ctx, GL_R, GL_EYE_PLANE, unit->EyePlaneR);
 675             ctx->Driver.TexGen(ctx, GL_Q, GL_EYE_PLANE, unit->EyePlaneQ);
 676          }
 677       }
 678       _mesa_set_enable(ctx, GL_TEXTURE_GEN_S,
 679                        ((unit->TexGenEnabled & S_BIT) ? GL_TRUE : GL_FALSE));
 680       _mesa_set_enable(ctx, GL_TEXTURE_GEN_T,
 681                        ((unit->TexGenEnabled & T_BIT) ? GL_TRUE : GL_FALSE));
 682       _mesa_set_enable(ctx, GL_TEXTURE_GEN_R,
 683                        ((unit->TexGenEnabled & R_BIT) ? GL_TRUE : GL_FALSE));
 684       _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q,
 685                        ((unit->TexGenEnabled & Q_BIT) ? GL_TRUE : GL_FALSE));
 686       if (ctx->Extensions.EXT_texture_lod_bias) {
 687          _mesa_TexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
 688                        GL_TEXTURE_LOD_BIAS_EXT, unit->LodBias);
 689       }
 690       if (ctx->Extensions.EXT_texture_env_combine ||
 691           ctx->Extensions.ARB_texture_env_combine) {
 692          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB,
 693                        unit->Combine.ModeRGB);
 694          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA,
 695                        unit->Combine.ModeA);
 696          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB,
 697                        unit->Combine.SourceRGB[0]);
 698          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB,
 699                        unit->Combine.SourceRGB[1]);
 700          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB,
 701                        unit->Combine.SourceRGB[2]);
 702          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA,
 703                        unit->Combine.SourceA[0]);
 704          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA,
 705                        unit->Combine.SourceA[1]);
 706          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA,
 707                        unit->Combine.SourceA[2]);
 708          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB,
 709                        unit->Combine.OperandRGB[0]);
 710          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB,
 711                        unit->Combine.OperandRGB[1]);
 712          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB,
 713                        unit->Combine.OperandRGB[2]);
 714          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA,
 715                        unit->Combine.OperandA[0]);
 716          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA,
 717                        unit->Combine.OperandA[1]);
 718          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA,
 719                        unit->Combine.OperandA[2]);
 720          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE,
 721                        1 << unit->Combine.ScaleShiftRGB);
 722          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE,
 723                        1 << unit->Combine.ScaleShiftA);
 724       }
 725
 726       /* Restore texture object state */
 727       for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
 728          GLenum target = 0;
 729          const struct gl_texture_object *obj = NULL;
 730          GLfloat bordColor[4];
 731
 732          switch (i) {
 733          case 0:
 734             target = GL_TEXTURE_1D;
 735             obj = &unit->Saved1D;
 736             break;
 737          case 1:
 738             target = GL_TEXTURE_2D;
 739             obj = &unit->Saved2D;
 740             break;
 741          case 2:
 742             target = GL_TEXTURE_3D;
 743             obj = &unit->Saved3D;
 744             break;
 745          case 3:
 746             if (!ctx->Extensions.ARB_texture_cube_map)
 747                continue;
 748             target = GL_TEXTURE_CUBE_MAP_ARB;
 749             obj = &unit->SavedCubeMap;
 750             break;
 751          case 4:
 752             if (!ctx->Extensions.NV_texture_rectangle)
 753                continue;
 754             target = GL_TEXTURE_RECTANGLE_NV;
 755             obj = &unit->SavedRect;
 756             break;
 757          case 5:
 758             if (!ctx->Extensions.MESA_texture_array)
 759                continue;
 760             target = GL_TEXTURE_1D_ARRAY_EXT;
 761             obj = &unit->Saved1DArray;
 762             break;
 763          case 6:
 764             if (!ctx->Extensions.MESA_texture_array)
 765                continue;
 766             target = GL_TEXTURE_2D_ARRAY_EXT;
 767             obj = &unit->Saved2DArray;
 768             break;
 769          default:
 770             ; /* silence warnings */
 771          }
 772
 773          _mesa_BindTexture(target, obj->Name);
 774
 775          bordColor[0] = CHAN_TO_FLOAT(obj->BorderColor[0]);
 776          bordColor[1] = CHAN_TO_FLOAT(obj->BorderColor[1]);
 777          bordColor[2] = CHAN_TO_FLOAT(obj->BorderColor[2]);
 778          bordColor[3] = CHAN_TO_FLOAT(obj->BorderColor[3]);
 779
 780          _mesa_TexParameterf(target, GL_TEXTURE_PRIORITY, obj->Priority);
 781          _mesa_TexParameterfv(target, GL_TEXTURE_BORDER_COLOR, bordColor);
 782          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, obj->WrapS);
 783          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, obj->WrapT);
 784          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, obj->WrapR);
 785          _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, obj->MinFilter);
 786          _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, obj->MagFilter);
 787          _mesa_TexParameterf(target, GL_TEXTURE_MIN_LOD, obj->MinLod);
 788          _mesa_TexParameterf(target, GL_TEXTURE_MAX_LOD, obj->MaxLod);
 789          _mesa_TexParameterf(target, GL_TEXTURE_LOD_BIAS, obj->LodBias);
 790          _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, obj->BaseLevel);
 791          if (target != GL_TEXTURE_RECTANGLE_ARB)
 792             _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, obj->MaxLevel);
 793          if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 794             _mesa_TexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT,
 795                                 obj->MaxAnisotropy);
 796          }
 797          if (ctx->Extensions.SGIX_shadow) {
 798             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_SGIX,
 799                                 obj->CompareFlag);
 800             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_OPERATOR_SGIX,
 801                                 obj->CompareOperator);
 802          }
 803          if (ctx->Extensions.SGIX_shadow_ambient) {
 804             _mesa_TexParameterf(target, GL_SHADOW_AMBIENT_SGIX,
 805                                 obj->ShadowAmbient);
 806          }
 807
 808       }
 809    }
 810    _mesa_ActiveTextureARB(GL_TEXTURE0_ARB
 811                           + texAttrib->CurrentUnit);
 812
 813    /* "un-bump" the texture object reference counts.  We did that so they
 814     * wouldn't inadvertantly get deleted while they were still referenced
 815     * inside the attribute state stack.
 816     */
 817    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 818       ctx->Texture.Unit[u].Current1D->RefCount--;
 819       ctx->Texture.Unit[u].Current2D->RefCount--;
 820       ctx->Texture.Unit[u].Current3D->RefCount--;
 821       ctx->Texture.Unit[u].CurrentCubeMap->RefCount--;
 822       ctx->Texture.Unit[u].CurrentRect->RefCount--;
 823       ctx->Texture.Unit[u].Current1DArray->RefCount--;
 824       ctx->Texture.Unit[u].Current2DArray->RefCount--;
 825    }
 826 }
 827
 828
 829 /*
 830  * This function is kind of long just because we have to call a lot
 831  * of device driver functions to update device driver state.
 832  *
 833  * XXX As it is now, most of the pop-code calls immediate-mode Mesa functions
 834  * in order to restore GL state.  This isn't terribly efficient but it
 835  * ensures that dirty flags and any derived state gets updated correctly.
 836  * We could at least check if the value to restore equals the current value
 837  * and then skip the Mesa call.
 838  */
 839 void GLAPIENTRY
 840 _mesa_PopAttrib(void)
 841 {
 842    struct gl_attrib_node *attr, *next;
 843    GET_CURRENT_CONTEXT(ctx);
 844    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 845
 846    if (ctx->AttribStackDepth == 0) {
 847       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
 848       return;
 849    }
 850
 851    ctx->AttribStackDepth--;
 852    attr = ctx->AttribStack[ctx->AttribStackDepth];
 853
 854    while (attr) {
 855
 856       if (MESA_VERBOSE & VERBOSE_API) {
 857          _mesa_debug(ctx, "glPopAttrib %s\n",
 858                      _mesa_lookup_enum_by_nr(attr->kind));
 859       }
 860
 861       switch (attr->kind) {
 862          case GL_ACCUM_BUFFER_BIT:
 863             {
 864                const struct gl_accum_attrib *accum;
 865                accum = (const struct gl_accum_attrib *) attr->data;
 866                _mesa_ClearAccum(accum->ClearColor[0],
 867                                 accum->ClearColor[1],
 868                                 accum->ClearColor[2],
 869                                 accum->ClearColor[3]);
 870             }
 871             break;
 872          case GL_COLOR_BUFFER_BIT:
 873             {
 874                const struct gl_colorbuffer_attrib *color;
 875                color = (const struct gl_colorbuffer_attrib *) attr->data;
 876                _mesa_ClearIndex((GLfloat) color->ClearIndex);
 877                _mesa_ClearColor(color->ClearColor[0],
 878                                 color->ClearColor[1],
 879                                 color->ClearColor[2],
 880                                 color->ClearColor[3]);
 881                _mesa_IndexMask(color->IndexMask);
 882                _mesa_ColorMask((GLboolean) (color->ColorMask[0] != 0),
 883                                (GLboolean) (color->ColorMask[1] != 0),
 884                                (GLboolean) (color->ColorMask[2] != 0),
 885                                (GLboolean) (color->ColorMask[3] != 0));
 886                {
 887                   /* Need to determine if more than one color output is
 888                    * specified.  If so, call glDrawBuffersARB, else call
 889                    * glDrawBuffer().  This is a subtle, but essential point
 890                    * since GL_FRONT (for example) is illegal for the former
 891                    * function, but legal for the later.
 892                    */
 893                   GLboolean multipleBuffers = GL_FALSE;
 894                   if (ctx->Extensions.ARB_draw_buffers) {
 895                      GLuint i;
 896                      for (i = 1; i < ctx->Const.MaxDrawBuffers; i++) {
 897                         if (color->DrawBuffer[i] != GL_NONE) {
 898                            multipleBuffers = GL_TRUE;
 899                            break;
 900                         }
 901                      }
 902                   }
 903                   /* Call the API_level functions, not _mesa_drawbuffers()
 904                    * since we need to do error checking on the pop'd
 905                    * GL_DRAW_BUFFER.
 906                    * Ex: if GL_FRONT were pushed, but we're popping with a
 907                    * user FBO bound, GL_FRONT will be illegal and we'll need
 908                    * to record that error.  Per OpenGL ARB decision.
 909                    */
 910                   if (multipleBuffers)
 911                      _mesa_DrawBuffersARB(ctx->Const.MaxDrawBuffers,
 912                                           color->DrawBuffer);
 913                   else
 914                      _mesa_DrawBuffer(color->DrawBuffer[0]);
 915                }
 916                _mesa_set_enable(ctx, GL_ALPHA_TEST, color->AlphaEnabled);
 917                _mesa_AlphaFunc(color->AlphaFunc, color->AlphaRef);
 918                _mesa_set_enable(ctx, GL_BLEND, color->BlendEnabled);
 919                _mesa_BlendFuncSeparateEXT(color->BlendSrcRGB,
 920                                           color->BlendDstRGB,
 921                                           color->BlendSrcA,
 922                                           color->BlendDstA);
 923                /* This special case is because glBlendEquationSeparateEXT
 924                 * cannot take GL_LOGIC_OP as a parameter.
 925                 */
 926                if ( color->BlendEquationRGB == color->BlendEquationA ) {
 927                   _mesa_BlendEquation(color->BlendEquationRGB);
 928                }
 929                else {
 930                   _mesa_BlendEquationSeparateEXT(color->BlendEquationRGB,
 931                                                  color->BlendEquationA);
 932                }
 933                _mesa_BlendColor(color->BlendColor[0],
 934                                 color->BlendColor[1],
 935                                 color->BlendColor[2],
 936                                 color->BlendColor[3]);
 937                _mesa_LogicOp(color->LogicOp);
 938                _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP,
 939                                 color->ColorLogicOpEnabled);
 940                _mesa_set_enable(ctx, GL_INDEX_LOGIC_OP,
 941                                 color->IndexLogicOpEnabled);
 942                _mesa_set_enable(ctx, GL_DITHER, color->DitherFlag);
 943             }
 944             break;
 945          case GL_CURRENT_BIT:
 946             FLUSH_CURRENT( ctx, 0 );
 947             MEMCPY( &ctx->Current, attr->data,
 948                     sizeof(struct gl_current_attrib) );
 949             break;
 950          case GL_DEPTH_BUFFER_BIT:
 951             {
 952                const struct gl_depthbuffer_attrib *depth;
 953                depth = (const struct gl_depthbuffer_attrib *) attr->data;
 954                _mesa_DepthFunc(depth->Func);
 955                _mesa_ClearDepth(depth->Clear);
 956                _mesa_set_enable(ctx, GL_DEPTH_TEST, depth->Test);
 957                _mesa_DepthMask(depth->Mask);
 958             }
 959             break;
 960          case GL_ENABLE_BIT:
 961             {
 962                const struct gl_enable_attrib *enable;
 963                enable = (const struct gl_enable_attrib *) attr->data;
 964                pop_enable_group(ctx, enable);
 965                ctx->NewState |= _NEW_ALL;
 966             }
 967             break;
 968          case GL_EVAL_BIT:
 969             MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
 970             ctx->NewState |= _NEW_EVAL;
 971             break;
 972          case GL_FOG_BIT:
 973             {
 974                const struct gl_fog_attrib *fog;
 975                fog = (const struct gl_fog_attrib *) attr->data;
 976                _mesa_set_enable(ctx, GL_FOG, fog->Enabled);
 977                _mesa_Fogfv(GL_FOG_COLOR, fog->Color);
 978                _mesa_Fogf(GL_FOG_DENSITY, fog->Density);
 979                _mesa_Fogf(GL_FOG_START, fog->Start);
 980                _mesa_Fogf(GL_FOG_END, fog->End);
 981                _mesa_Fogf(GL_FOG_INDEX, fog->Index);
 982                _mesa_Fogi(GL_FOG_MODE, fog->Mode);
 983             }
 984             break;
 985          case GL_HINT_BIT:
 986             {
 987                const struct gl_hint_attrib *hint;
 988                hint = (const struct gl_hint_attrib *) attr->data;
 989                _mesa_Hint(GL_PERSPECTIVE_CORRECTION_HINT,
 990                           hint->PerspectiveCorrection );
 991                _mesa_Hint(GL_POINT_SMOOTH_HINT, hint->PointSmooth);
 992                _mesa_Hint(GL_LINE_SMOOTH_HINT, hint->LineSmooth);
 993                _mesa_Hint(GL_POLYGON_SMOOTH_HINT, hint->PolygonSmooth);
 994                _mesa_Hint(GL_FOG_HINT, hint->Fog);
 995                _mesa_Hint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT,
 996                           hint->ClipVolumeClipping);
 997                if (ctx->Extensions.ARB_texture_compression)
 998                   _mesa_Hint(GL_TEXTURE_COMPRESSION_HINT_ARB,
 999                              hint->TextureCompression);
1000             }
1001             break;
1002          case GL_LIGHTING_BIT:
1003             {
1004                GLuint i;
1005                const struct gl_light_attrib *light;
1006                light = (const struct gl_light_attrib *) attr->data;
1007                /* lighting enable */
1008                _mesa_set_enable(ctx, GL_LIGHTING, light->Enabled);
1009                /* per-light state */
1010                if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top))
1011                   _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
1012
1013                for (i = 0; i < ctx->Const.MaxLights; i++) {
1014                   const struct gl_light *l = &light->Light[i];
1015                   _mesa_set_enable(ctx, GL_LIGHT0 + i, l->Enabled);
1016                   _mesa_light(ctx, i, GL_AMBIENT, l->Ambient);
1017                   _mesa_light(ctx, i, GL_DIFFUSE, l->Diffuse);
1018                   _mesa_light(ctx, i, GL_SPECULAR, l->Specular );
1019                   _mesa_light(ctx, i, GL_POSITION, l->EyePosition);
1020                   _mesa_light(ctx, i, GL_SPOT_DIRECTION, l->EyeDirection);
1021                   _mesa_light(ctx, i, GL_SPOT_EXPONENT, &l->SpotExponent);
1022                   _mesa_light(ctx, i, GL_SPOT_CUTOFF, &l->SpotCutoff);
1023                   _mesa_light(ctx, i, GL_CONSTANT_ATTENUATION,
1024                               &l->ConstantAttenuation);
1025                   _mesa_light(ctx, i, GL_LINEAR_ATTENUATION,
1026                               &l->LinearAttenuation);
1027                   _mesa_light(ctx, i, GL_QUADRATIC_ATTENUATION,
1028                               &l->QuadraticAttenuation);
1029                }
1030                /* light model */
1031                _mesa_LightModelfv(GL_LIGHT_MODEL_AMBIENT,
1032                                   light->Model.Ambient);
1033                _mesa_LightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER,
1034                                  (GLfloat) light->Model.LocalViewer);
1035                _mesa_LightModelf(GL_LIGHT_MODEL_TWO_SIDE,
1036                                  (GLfloat) light->Model.TwoSide);
1037                _mesa_LightModelf(GL_LIGHT_MODEL_COLOR_CONTROL,
1038                                  (GLfloat) light->Model.ColorControl);
1039                /* shade model */
1040                _mesa_ShadeModel(light->ShadeModel);
1041                /* color material */
1042                _mesa_ColorMaterial(light->ColorMaterialFace,
1043                                    light->ColorMaterialMode);
1044                _mesa_set_enable(ctx, GL_COLOR_MATERIAL,
1045                                 light->ColorMaterialEnabled);
1046                /* materials */
1047                MEMCPY(&ctx->Light.Material, &light->Material,
1048                       sizeof(struct gl_material));
1049             }
1050             break;
1051          case GL_LINE_BIT:
1052             {
1053                const struct gl_line_attrib *line;
1054                line = (const struct gl_line_attrib *) attr->data;
1055                _mesa_set_enable(ctx, GL_LINE_SMOOTH, line->SmoothFlag);
1056                _mesa_set_enable(ctx, GL_LINE_STIPPLE, line->StippleFlag);
1057                _mesa_LineStipple(line->StippleFactor, line->StipplePattern);
1058                _mesa_LineWidth(line->Width);
1059             }
1060             break;
1061          case GL_LIST_BIT:
1062             MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
1063             break;
1064          case GL_PIXEL_MODE_BIT:
1065             MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
1066             /* XXX what other pixel state needs to be set by function calls? */
1067             _mesa_ReadBuffer(ctx->Pixel.ReadBuffer);
1068             ctx->NewState |= _NEW_PIXEL;
1069             break;
1070          case GL_POINT_BIT:
1071             {
1072                const struct gl_point_attrib *point;
1073                point = (const struct gl_point_attrib *) attr->data;
1074                _mesa_PointSize(point->Size);
1075                _mesa_set_enable(ctx, GL_POINT_SMOOTH, point->SmoothFlag);
1076                if (ctx->Extensions.EXT_point_parameters) {
1077                   _mesa_PointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT,
1078                                             point->Params);
1079                   _mesa_PointParameterfEXT(GL_POINT_SIZE_MIN_EXT,
1080                                            point->MinSize);
1081                   _mesa_PointParameterfEXT(GL_POINT_SIZE_MAX_EXT,
1082                                            point->MaxSize);
1083                   _mesa_PointParameterfEXT(GL_POINT_FADE_THRESHOLD_SIZE_EXT,
1084                                            point->Threshold);
1085                }
1086                if (ctx->Extensions.NV_point_sprite
1087                    || ctx->Extensions.ARB_point_sprite) {
1088                   GLuint u;
1089                   for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
1090                      _mesa_TexEnvi(GL_POINT_SPRITE_NV, GL_COORD_REPLACE_NV,
1091                                    (GLint) point->CoordReplace[u]);
1092                   }
1093                   _mesa_set_enable(ctx, GL_POINT_SPRITE_NV,point->PointSprite);
1094                   _mesa_PointParameteriNV(GL_POINT_SPRITE_R_MODE_NV,
1095                                           ctx->Point.SpriteRMode);
1096                   _mesa_PointParameterfEXT(GL_POINT_SPRITE_COORD_ORIGIN,
1097                                            (GLfloat)ctx->Point.SpriteOrigin);
1098                }
1099             }
1100             break;
1101          case GL_POLYGON_BIT:
1102             {
1103                const struct gl_polygon_attrib *polygon;
1104                polygon = (const struct gl_polygon_attrib *) attr->data;
1105                _mesa_CullFace(polygon->CullFaceMode);
1106                _mesa_FrontFace(polygon->FrontFace);
1107                _mesa_PolygonMode(GL_FRONT, polygon->FrontMode);
1108                _mesa_PolygonMode(GL_BACK, polygon->BackMode);
1109                _mesa_PolygonOffset(polygon->OffsetFactor,
1110                                    polygon->OffsetUnits);
1111                _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, polygon->SmoothFlag);
1112                _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, polygon->StippleFlag);
1113                _mesa_set_enable(ctx, GL_CULL_FACE, polygon->CullFlag);
1114                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_POINT,
1115                                 polygon->OffsetPoint);
1116                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_LINE,
1117                                 polygon->OffsetLine);
1118                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL,
1119                                 polygon->OffsetFill);
1120             }
1121             break;
1122          case GL_POLYGON_STIPPLE_BIT:
1123             MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
1124             ctx->NewState |= _NEW_POLYGONSTIPPLE;
1125             if (ctx->Driver.PolygonStipple)
1126                ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data );
1127             break;
1128          case GL_SCISSOR_BIT:
1129             {
1130                const struct gl_scissor_attrib *scissor;
1131                scissor = (const struct gl_scissor_attrib *) attr->data;
1132                _mesa_Scissor(scissor->X, scissor->Y,
1133                              scissor->Width, scissor->Height);
1134                _mesa_set_enable(ctx, GL_SCISSOR_TEST, scissor->Enabled);
1135             }
1136             break;
1137          case GL_STENCIL_BUFFER_BIT:
1138             {
1139                const struct gl_stencil_attrib *stencil;
1140                stencil = (const struct gl_stencil_attrib *) attr->data;
1141                _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);
1142                _mesa_ClearStencil(stencil->Clear);
1143                if (ctx->Extensions.EXT_stencil_two_side) {
1144                   _mesa_set_enable(ctx, GL_STENCIL_TEST_TWO_SIDE_EXT,
1145                                    stencil->TestTwoSide);
1146                   _mesa_ActiveStencilFaceEXT(stencil->ActiveFace
1147                                              ? GL_BACK : GL_FRONT);
1148                }
1149                /* front state */
1150                _mesa_StencilFuncSeparate(GL_FRONT,
1151                                          stencil->Function[0],
1152                                          stencil->Ref[0],
1153                                          stencil->ValueMask[0]);
1154                _mesa_StencilMaskSeparate(GL_FRONT, stencil->WriteMask[0]);
1155                _mesa_StencilOpSeparate(GL_FRONT, stencil->FailFunc[0],
1156                                        stencil->ZFailFunc[0],
1157                                        stencil->ZPassFunc[0]);
1158                /* back state */
1159                _mesa_StencilFuncSeparate(GL_BACK,
1160                                          stencil->Function[1],
1161                                          stencil->Ref[1],
1162                                          stencil->ValueMask[1]);
1163                _mesa_StencilMaskSeparate(GL_BACK, stencil->WriteMask[1]);
1164                _mesa_StencilOpSeparate(GL_BACK, stencil->FailFunc[1],
1165                                        stencil->ZFailFunc[1],
1166                                        stencil->ZPassFunc[1]);
1167             }
1168             break;
1169          case GL_TRANSFORM_BIT:
1170             {
1171                GLuint i;
1172                const struct gl_transform_attrib *xform;
1173                xform = (const struct gl_transform_attrib *) attr->data;
1174                _mesa_MatrixMode(xform->MatrixMode);
1175                if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top))
1176                   _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
1177
1178                /* restore clip planes */
1179                for (i = 0; i < MAX_CLIP_PLANES; i++) {
1180                   const GLuint mask = 1 << 1;
1181                   const GLfloat *eyePlane = xform->EyeUserPlane[i];
1182                   COPY_4V(ctx->Transform.EyeUserPlane[i], eyePlane);
1183                   if (xform->ClipPlanesEnabled & mask) {
1184                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE);
1185                   }
1186                   else {
1187                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_FALSE);
1188                   }
1189                   if (ctx->Driver.ClipPlane)
1190                      ctx->Driver.ClipPlane( ctx, GL_CLIP_PLANE0 + i, eyePlane );
1191                }
1192
1193                /* normalize/rescale */
1194                if (xform->Normalize != ctx->Transform.Normalize)
1195                   _mesa_set_enable(ctx, GL_NORMALIZE,ctx->Transform.Normalize);
1196                if (xform->RescaleNormals != ctx->Transform.RescaleNormals)
1197                   _mesa_set_enable(ctx, GL_RESCALE_NORMAL_EXT,
1198                                    ctx->Transform.RescaleNormals);
1199             }
1200             break;
1201          case GL_TEXTURE_BIT:
1202             /* Take care of texture object reference counters */
1203             {
1204                const struct gl_texture_attrib *texture;
1205                texture = (const struct gl_texture_attrib *) attr->data;
1206                pop_texture_group(ctx, texture);
1207                ctx->NewState |= _NEW_TEXTURE;
1208             }
1209             break;
1210          case GL_VIEWPORT_BIT:
1211             {
1212                const struct gl_viewport_attrib *vp;
1213                vp = (const struct gl_viewport_attrib *) attr->data;
1214                _mesa_Viewport(vp->X, vp->Y, vp->Width, vp->Height);
1215                _mesa_DepthRange(vp->Near, vp->Far);
1216             }
1217             break;
1218          case GL_MULTISAMPLE_BIT_ARB:
1219             {
1220                const struct gl_multisample_attrib *ms;
1221                ms = (const struct gl_multisample_attrib *) attr->data;
1222                _mesa_SampleCoverageARB(ms->SampleCoverageValue,
1223                                        ms->SampleCoverageInvert);
1224             }
1225             break;
1226
1227          default:
1228             _mesa_problem( ctx, "Bad attrib flag in PopAttrib");
1229             break;
1230       }
1231
1232       next = attr->next;
1233       FREE( attr->data );
1234       FREE( attr );
1235       attr = next;
1236    }
1237 }
1238
1239
1240 /**
1241  * Helper for incrementing/decrementing vertex buffer object reference
1242  * counts when pushing/popping the GL_CLIENT_VERTEX_ARRAY_BIT attribute group.
1243  */
1244 static void
1245 adjust_buffer_object_ref_counts(struct gl_array_attrib *array, GLint step)
1246 {
1247    GLuint i;
1248    array->ArrayObj->Vertex.BufferObj->RefCount += step;
1249    array->ArrayObj->Normal.BufferObj->RefCount += step;
1250    array->ArrayObj->Color.BufferObj->RefCount += step;
1251    array->ArrayObj->SecondaryColor.BufferObj->RefCount += step;
1252    array->ArrayObj->FogCoord.BufferObj->RefCount += step;
1253    array->ArrayObj->Index.BufferObj->RefCount += step;
1254    array->ArrayObj->EdgeFlag.BufferObj->RefCount += step;
1255    for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++)
1256       array->ArrayObj->TexCoord[i].BufferObj->RefCount += step;
1257    for (i = 0; i < VERT_ATTRIB_MAX; i++)
1258       array->ArrayObj->VertexAttrib[i].BufferObj->RefCount += step;
1259
1260    array->ArrayBufferObj->RefCount += step;
1261    array->ElementArrayBufferObj->RefCount += step;
1262 }
1263
1264
1265 #define GL_CLIENT_PACK_BIT (1<<20)
1266 #define GL_CLIENT_UNPACK_BIT (1<<21)
1267
1268
1269 void GLAPIENTRY
1270 _mesa_PushClientAttrib(GLbitfield mask)
1271 {
1272    struct gl_attrib_node *newnode;
1273    struct gl_attrib_node *head;
1274
1275    GET_CURRENT_CONTEXT(ctx);
1276    ASSERT_OUTSIDE_BEGIN_END(ctx);
1277
1278    if (ctx->ClientAttribStackDepth >= MAX_CLIENT_ATTRIB_STACK_DEPTH) {
1279       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
1280       return;
1281    }
1282
1283    /* Build linked list of attribute nodes which save all attribute */
1284    /* groups specified by the mask. */
1285    head = NULL;
1286
1287    if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
1288       struct gl_pixelstore_attrib *attr;
1289 #if FEATURE_EXT_pixel_buffer_object
1290       ctx->Pack.BufferObj->RefCount++;
1291       ctx->Unpack.BufferObj->RefCount++;
1292 #endif
1293       /* packing attribs */
1294       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1295       MEMCPY( attr, &ctx->Pack, sizeof(struct gl_pixelstore_attrib) );
1296       newnode = new_attrib_node( GL_CLIENT_PACK_BIT );
1297       newnode->data = attr;
1298       newnode->next = head;
1299       head = newnode;
1300       /* unpacking attribs */
1301       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1302       MEMCPY( attr, &ctx->Unpack, sizeof(struct gl_pixelstore_attrib) );
1303       newnode = new_attrib_node( GL_CLIENT_UNPACK_BIT );
1304       newnode->data = attr;
1305       newnode->next = head;
1306       head = newnode;
1307    }
1308    if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
1309       struct gl_array_attrib *attr;
1310       struct gl_array_object *obj;
1311
1312       attr = MALLOC_STRUCT( gl_array_attrib );
1313       obj = MALLOC_STRUCT( gl_array_object );
1314
1315 #if FEATURE_ARB_vertex_buffer_object
1316       /* increment ref counts since we're copying pointers to these objects */
1317       ctx->Array.ArrayBufferObj->RefCount++;
1318       ctx->Array.ElementArrayBufferObj->RefCount++;
1319 #endif
1320
1321       MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
1322       MEMCPY( obj, ctx->Array.ArrayObj, sizeof(struct gl_array_object) );
1323
1324       attr->ArrayObj = obj;
1325
1326       newnode = new_attrib_node( GL_CLIENT_VERTEX_ARRAY_BIT );
1327       newnode->data = attr;
1328       newnode->next = head;
1329       head = newnode;
1330       /* bump reference counts on buffer objects */
1331       adjust_buffer_object_ref_counts(&ctx->Array, 1);
1332    }
1333
1334    ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
1335    ctx->ClientAttribStackDepth++;
1336 }
1337
1338
1339
1340
1341 void GLAPIENTRY
1342 _mesa_PopClientAttrib(void)
1343 {
1344    struct gl_attrib_node *attr, *next;
1345
1346    GET_CURRENT_CONTEXT(ctx);
1347    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1348
1349    if (ctx->ClientAttribStackDepth == 0) {
1350       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
1351       return;
1352    }
1353
1354    ctx->ClientAttribStackDepth--;
1355    attr = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
1356
1357    while (attr) {
1358       switch (attr->kind) {
1359          case GL_CLIENT_PACK_BIT:
1360 #if FEATURE_EXT_pixel_buffer_object
1361             ctx->Pack.BufferObj->RefCount--;
1362             if (ctx->Pack.BufferObj->RefCount <= 0) {
1363                _mesa_remove_buffer_object( ctx, ctx->Pack.BufferObj );
1364                (*ctx->Driver.DeleteBuffer)( ctx, ctx->Pack.BufferObj );
1365             }
1366 #endif
1367             MEMCPY( &ctx->Pack, attr->data,
1368                     sizeof(struct gl_pixelstore_attrib) );
1369             ctx->NewState |= _NEW_PACKUNPACK;
1370             break;
1371          case GL_CLIENT_UNPACK_BIT:
1372 #if FEATURE_EXT_pixel_buffer_object
1373             ctx->Unpack.BufferObj->RefCount--;
1374             if (ctx->Unpack.BufferObj->RefCount <= 0) {
1375                _mesa_remove_buffer_object( ctx, ctx->Unpack.BufferObj );
1376                (*ctx->Driver.DeleteBuffer)( ctx, ctx->Unpack.BufferObj );
1377             }
1378 #endif
1379             MEMCPY( &ctx->Unpack, attr->data,
1380                     sizeof(struct gl_pixelstore_attrib) );
1381             ctx->NewState |= _NEW_PACKUNPACK;
1382             break;
1383          case GL_CLIENT_VERTEX_ARRAY_BIT: {
1384             struct gl_array_attrib * data =
1385               (struct gl_array_attrib *) attr->data;
1386
1387             adjust_buffer_object_ref_counts(&ctx->Array, -1);
1388
1389             ctx->Array.ActiveTexture = data->ActiveTexture;
1390             ctx->Array.LockFirst = data->LockFirst;
1391             ctx->Array.LockCount = data->LockCount;
1392
1393             _mesa_BindVertexArrayAPPLE( data->ArrayObj->Name );
1394
1395 #if FEATURE_ARB_vertex_buffer_object
1396             _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB,
1397                                 data->ArrayBufferObj->Name);
1398             _mesa_BindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB,
1399                                 data->ElementArrayBufferObj->Name);
1400 #endif
1401
1402             MEMCPY( ctx->Array.ArrayObj, data->ArrayObj,
1403                     sizeof( struct gl_array_object ) );
1404
1405             FREE( data->ArrayObj );
1406
1407             /* FIXME: Should some bits in ctx->Array->NewState also be set
1408              * FIXME: here?  It seems like it should be set to inclusive-or
1409              * FIXME: of the old ArrayObj->_Enabled and the new _Enabled.
1410              */
1411
1412             ctx->NewState |= _NEW_ARRAY;
1413             break;
1414          }
1415          default:
1416             _mesa_problem( ctx, "Bad attrib flag in PopClientAttrib");
1417             break;
1418       }
1419
1420       next = attr->next;
1421       FREE( attr->data );
1422       FREE( attr );
1423       attr = next;
1424    }
1425 }
1426
1427
1428 void _mesa_init_attrib( GLcontext *ctx )
1429 {
1430    /* Renderer and client attribute stacks */
1431    ctx->AttribStackDepth = 0;
1432    ctx->ClientAttribStackDepth = 0;
1433 }