src/mesa/main/attrib.c

   1 /* $Id: attrib.c,v 1.17 2000/02/27 20:38:15 keithw Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.1
   6  *
   7  * Copyright (C) 1999-2000  Brian Paul   All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27
  28 #ifdef PC_HEADER
  29 #include "all.h"
  30 #else
  31 #include "glheader.h"
  32 #include "attrib.h"
  33 #include "buffers.h"
  34 #include "context.h"
  35 #include "enable.h"
  36 #include "enums.h"
  37 #include "mem.h"
  38 #include "simple_list.h"
  39 #include "texstate.h"
  40 #include "types.h"
  41 #endif
  42
  43
  44
  45
  46 /*
  47  * Allocate a new attribute state node.  These nodes have a
  48  * "kind" value and a pointer to a struct of state data.
  49  */
  50 static struct gl_attrib_node *
  51 new_attrib_node( GLbitfield kind )
  52 {
  53    struct gl_attrib_node *an = MALLOC_STRUCT(gl_attrib_node);
  54    if (an) {
  55       an->kind = kind;
  56    }
  57    return an;
  58 }
  59
  60
  61
  62 /*
  63  * Copy texture object state from one texture object to another.
  64  */
  65 static void
  66 copy_texobj_state( struct gl_texture_object *dest,
  67                    const struct gl_texture_object *src )
  68 {
  69    /*
  70    dest->Name = src->Name;
  71    dest->Dimensions = src->Dimensions;
  72    */
  73    dest->Priority = src->Priority;
  74    dest->BorderColor[0] = src->BorderColor[0];
  75    dest->BorderColor[1] = src->BorderColor[1];
  76    dest->BorderColor[2] = src->BorderColor[2];
  77    dest->BorderColor[3] = src->BorderColor[3];
  78    dest->WrapS = src->WrapS;
  79    dest->WrapT = src->WrapT;
  80    dest->WrapR = src->WrapR;
  81    dest->MinFilter = src->MinFilter;
  82    dest->MagFilter = src->MagFilter;
  83    dest->MinLod = src->MinLod;
  84    dest->MaxLod = src->MaxLod;
  85    dest->BaseLevel = src->BaseLevel;
  86    dest->MaxLevel = src->MaxLevel;
  87    dest->P = src->P;
  88    dest->M = src->M;
  89    dest->MinMagThresh = src->MinMagThresh;
  90    dest->Palette = src->Palette;
  91    dest->Complete = src->Complete;
  92    dest->SampleFunc = src->SampleFunc;
  93 }
  94
  95
  96
  97 void
  98 _mesa_PushAttrib(GLbitfield mask)
  99 {
 100    struct gl_attrib_node *newnode;
 101    struct gl_attrib_node *head;
 102
 103    GET_CURRENT_CONTEXT(ctx);
 104    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPushAttrib");
 105
 106    if (MESA_VERBOSE&VERBOSE_API)
 107       fprintf(stderr, "glPushAttrib %x\n", (int)mask);
 108
 109    if (ctx->AttribStackDepth>=MAX_ATTRIB_STACK_DEPTH) {
 110       gl_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
 111       return;
 112    }
 113
 114    /* Build linked list of attribute nodes which save all attribute */
 115    /* groups specified by the mask. */
 116    head = NULL;
 117
 118    if (mask & GL_ACCUM_BUFFER_BIT) {
 119       struct gl_accum_attrib *attr;
 120       attr = MALLOC_STRUCT( gl_accum_attrib );
 121       MEMCPY( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );
 122       newnode = new_attrib_node( GL_ACCUM_BUFFER_BIT );
 123       newnode->data = attr;
 124       newnode->next = head;
 125       head = newnode;
 126    }
 127
 128    if (mask & GL_COLOR_BUFFER_BIT) {
 129       struct gl_colorbuffer_attrib *attr;
 130       attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
 131       MEMCPY( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
 132       newnode = new_attrib_node( GL_COLOR_BUFFER_BIT );
 133       newnode->data = attr;
 134       newnode->next = head;
 135       head = newnode;
 136    }
 137
 138    if (mask & GL_CURRENT_BIT) {
 139       struct gl_current_attrib *attr;
 140       attr = MALLOC_STRUCT( gl_current_attrib );
 141       MEMCPY( attr, &ctx->Current, sizeof(struct gl_current_attrib) );
 142       newnode = new_attrib_node( GL_CURRENT_BIT );
 143       newnode->data = attr;
 144       newnode->next = head;
 145       head = newnode;
 146    }
 147
 148    if (mask & GL_DEPTH_BUFFER_BIT) {
 149       struct gl_depthbuffer_attrib *attr;
 150       attr = MALLOC_STRUCT( gl_depthbuffer_attrib );
 151       MEMCPY( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );
 152       newnode = new_attrib_node( GL_DEPTH_BUFFER_BIT );
 153       newnode->data = attr;
 154       newnode->next = head;
 155       head = newnode;
 156    }
 157
 158    if (mask & GL_ENABLE_BIT) {
 159       struct gl_enable_attrib *attr;
 160       GLuint i;
 161       attr = MALLOC_STRUCT( gl_enable_attrib );
 162       /* Copy enable flags from all other attributes into the enable struct. */
 163       attr->AlphaTest = ctx->Color.AlphaEnabled;
 164       attr->AutoNormal = ctx->Eval.AutoNormal;
 165       attr->Blend = ctx->Color.BlendEnabled;
 166       for (i=0;i<MAX_CLIP_PLANES;i++) {
 167          attr->ClipPlane[i] = ctx->Transform.ClipEnabled[i];
 168       }
 169       attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;
 170       attr->CullFace = ctx->Polygon.CullFlag;
 171       attr->DepthTest = ctx->Depth.Test;
 172       attr->Dither = ctx->Color.DitherFlag;
 173       attr->Fog = ctx->Fog.Enabled;
 174       for (i=0;i<MAX_LIGHTS;i++) {
 175          attr->Light[i] = ctx->Light.Light[i].Enabled;
 176       }
 177       attr->Lighting = ctx->Light.Enabled;
 178       attr->LineSmooth = ctx->Line.SmoothFlag;
 179       attr->LineStipple = ctx->Line.StippleFlag;
 180       attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
 181       attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
 182       attr->Map1Color4 = ctx->Eval.Map1Color4;
 183       attr->Map1Index = ctx->Eval.Map1Index;
 184       attr->Map1Normal = ctx->Eval.Map1Normal;
 185       attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
 186       attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
 187       attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
 188       attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
 189       attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
 190       attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
 191       attr->Map2Color4 = ctx->Eval.Map2Color4;
 192       attr->Map2Index = ctx->Eval.Map2Index;
 193       attr->Map2Normal = ctx->Eval.Map2Normal;
 194       attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
 195       attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
 196       attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
 197       attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
 198       attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
 199       attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
 200       attr->Normalize = ctx->Transform.Normalize;
 201       attr->PointSmooth = ctx->Point.SmoothFlag;
 202       attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;
 203       attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;
 204       attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;
 205       attr->PolygonSmooth = ctx->Polygon.SmoothFlag;
 206       attr->PolygonStipple = ctx->Polygon.StippleFlag;
 207       attr->RescaleNormals = ctx->Transform.RescaleNormals;
 208       attr->Scissor = ctx->Scissor.Enabled;
 209       attr->Stencil = ctx->Stencil.Enabled;
 210       attr->Texture = ctx->Texture.Enabled;
 211       for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 212          attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
 213       }
 214       newnode = new_attrib_node( GL_ENABLE_BIT );
 215       newnode->data = attr;
 216       newnode->next = head;
 217       head = newnode;
 218    }
 219
 220    if (mask & GL_EVAL_BIT) {
 221       struct gl_eval_attrib *attr;
 222       attr = MALLOC_STRUCT( gl_eval_attrib );
 223       MEMCPY( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
 224       newnode = new_attrib_node( GL_EVAL_BIT );
 225       newnode->data = attr;
 226       newnode->next = head;
 227       head = newnode;
 228    }
 229
 230    if (mask & GL_FOG_BIT) {
 231       struct gl_fog_attrib *attr;
 232       attr = MALLOC_STRUCT( gl_fog_attrib );
 233       MEMCPY( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
 234       newnode = new_attrib_node( GL_FOG_BIT );
 235       newnode->data = attr;
 236       newnode->next = head;
 237       head = newnode;
 238    }
 239
 240    if (mask & GL_HINT_BIT) {
 241       struct gl_hint_attrib *attr;
 242       attr = MALLOC_STRUCT( gl_hint_attrib );
 243       MEMCPY( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
 244       newnode = new_attrib_node( GL_HINT_BIT );
 245       newnode->data = attr;
 246       newnode->next = head;
 247       head = newnode;
 248    }
 249
 250    if (mask & GL_LIGHTING_BIT) {
 251       struct gl_light_attrib *attr;
 252       attr = MALLOC_STRUCT( gl_light_attrib );
 253       MEMCPY( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
 254       newnode = new_attrib_node( GL_LIGHTING_BIT );
 255       newnode->data = attr;
 256       newnode->next = head;
 257       head = newnode;
 258    }
 259
 260    if (mask & GL_LINE_BIT) {
 261       struct gl_line_attrib *attr;
 262       attr = MALLOC_STRUCT( gl_line_attrib );
 263       MEMCPY( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
 264       newnode = new_attrib_node( GL_LINE_BIT );
 265       newnode->data = attr;
 266       newnode->next = head;
 267       head = newnode;
 268    }
 269
 270    if (mask & GL_LIST_BIT) {
 271       struct gl_list_attrib *attr;
 272       attr = MALLOC_STRUCT( gl_list_attrib );
 273       MEMCPY( attr, &ctx->List, sizeof(struct gl_list_attrib) );
 274       newnode = new_attrib_node( GL_LIST_BIT );
 275       newnode->data = attr;
 276       newnode->next = head;
 277       head = newnode;
 278    }
 279
 280    if (mask & GL_PIXEL_MODE_BIT) {
 281       struct gl_pixel_attrib *attr;
 282       attr = MALLOC_STRUCT( gl_pixel_attrib );
 283       MEMCPY( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
 284       newnode = new_attrib_node( GL_PIXEL_MODE_BIT );
 285       newnode->data = attr;
 286       newnode->next = head;
 287       head = newnode;
 288    }
 289
 290    if (mask & GL_POINT_BIT) {
 291       struct gl_point_attrib *attr;
 292       attr = MALLOC_STRUCT( gl_point_attrib );
 293       MEMCPY( attr, &ctx->Point, sizeof(struct gl_point_attrib) );
 294       newnode = new_attrib_node( GL_POINT_BIT );
 295       newnode->data = attr;
 296       newnode->next = head;
 297       head = newnode;
 298    }
 299
 300    if (mask & GL_POLYGON_BIT) {
 301       struct gl_polygon_attrib *attr;
 302       attr = MALLOC_STRUCT( gl_polygon_attrib );
 303       MEMCPY( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );
 304       newnode = new_attrib_node( GL_POLYGON_BIT );
 305       newnode->data = attr;
 306       newnode->next = head;
 307       head = newnode;
 308    }
 309
 310    if (mask & GL_POLYGON_STIPPLE_BIT) {
 311       GLuint *stipple;
 312       stipple = (GLuint *) MALLOC( 32*sizeof(GLuint) );
 313       MEMCPY( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );
 314       newnode = new_attrib_node( GL_POLYGON_STIPPLE_BIT );
 315       newnode->data = stipple;
 316       newnode->next = head;
 317       head = newnode;
 318    }
 319
 320    if (mask & GL_SCISSOR_BIT) {
 321       struct gl_scissor_attrib *attr;
 322       attr = MALLOC_STRUCT( gl_scissor_attrib );
 323       MEMCPY( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );
 324       newnode = new_attrib_node( GL_SCISSOR_BIT );
 325       newnode->data = attr;
 326       newnode->next = head;
 327       head = newnode;
 328    }
 329
 330    if (mask & GL_STENCIL_BUFFER_BIT) {
 331       struct gl_stencil_attrib *attr;
 332       attr = MALLOC_STRUCT( gl_stencil_attrib );
 333       MEMCPY( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );
 334       newnode = new_attrib_node( GL_STENCIL_BUFFER_BIT );
 335       newnode->data = attr;
 336       newnode->next = head;
 337       head = newnode;
 338    }
 339
 340    if (mask & GL_TEXTURE_BIT) {
 341       struct gl_texture_attrib *attr;
 342       GLuint u;
 343       /* Take care of texture object reference counters */
 344       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 345          ctx->Texture.Unit[u].CurrentD[1]->RefCount++;
 346          ctx->Texture.Unit[u].CurrentD[2]->RefCount++;
 347          ctx->Texture.Unit[u].CurrentD[3]->RefCount++;
 348       }
 349       attr = MALLOC_STRUCT( gl_texture_attrib );
 350       MEMCPY( attr, &ctx->Texture, sizeof(struct gl_texture_attrib) );
 351       /* copy state of the currently bound texture objects */
 352       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 353          copy_texobj_state(&attr->Unit[u].Saved1D, attr->Unit[u].CurrentD[1]);
 354          copy_texobj_state(&attr->Unit[u].Saved2D, attr->Unit[u].CurrentD[2]);
 355          copy_texobj_state(&attr->Unit[u].Saved3D, attr->Unit[u].CurrentD[3]);
 356       }
 357       newnode = new_attrib_node( GL_TEXTURE_BIT );
 358       newnode->data = attr;
 359       newnode->next = head;
 360       head = newnode;
 361    }
 362
 363    if (mask & GL_TRANSFORM_BIT) {
 364       struct gl_transform_attrib *attr;
 365       attr = MALLOC_STRUCT( gl_transform_attrib );
 366       MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
 367       newnode = new_attrib_node( GL_TRANSFORM_BIT );
 368       newnode->data = attr;
 369       newnode->next = head;
 370       head = newnode;
 371    }
 372
 373    if (mask & GL_VIEWPORT_BIT) {
 374       struct gl_viewport_attrib *attr;
 375       attr = MALLOC_STRUCT( gl_viewport_attrib );
 376       MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
 377       newnode = new_attrib_node( GL_VIEWPORT_BIT );
 378       newnode->data = attr;
 379       newnode->next = head;
 380       head = newnode;
 381    }
 382
 383    ctx->AttribStack[ctx->AttribStackDepth] = head;
 384    ctx->AttribStackDepth++;
 385 }
 386
 387
 388
 389 /*
 390  * This function is kind of long just because we have to call a lot
 391  * of device driver functions to update device driver state.
 392  */
 393 void
 394 _mesa_PopAttrib(void)
 395 {
 396    struct gl_attrib_node *attr, *next;
 397    GET_CURRENT_CONTEXT(ctx);
 398
 399    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPopAttrib");
 400
 401
 402    if (ctx->AttribStackDepth==0) {
 403       gl_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
 404       return;
 405    }
 406
 407    ctx->AttribStackDepth--;
 408    attr = ctx->AttribStack[ctx->AttribStackDepth];
 409
 410    while (attr) {
 411
 412       if (MESA_VERBOSE&VERBOSE_API)
 413          fprintf(stderr, "glPopAttrib %s\n", gl_lookup_enum_by_nr(attr->kind));
 414
 415       switch (attr->kind) {
 416          case GL_ACCUM_BUFFER_BIT:
 417             MEMCPY( &ctx->Accum, attr->data, sizeof(struct gl_accum_attrib) );
 418             break;
 419          case GL_COLOR_BUFFER_BIT:
 420             {
 421                GLenum oldDrawBuffer = ctx->Color.DrawBuffer;
 422                GLenum oldAlphaFunc = ctx->Color.AlphaFunc;
 423                GLubyte oldAlphaRef = ctx->Color.AlphaRef;
 424                GLenum oldBlendSrc = ctx->Color.BlendSrcRGB;
 425                GLenum oldBlendDst = ctx->Color.BlendDstRGB;
 426                GLenum oldLogicOp = ctx->Color.LogicOp;
 427                MEMCPY( &ctx->Color, attr->data,
 428                        sizeof(struct gl_colorbuffer_attrib) );
 429                if (ctx->Color.DrawBuffer != oldDrawBuffer) {
 430                   _mesa_DrawBuffer( ctx->Color.DrawBuffer);
 431                }
 432                if ((ctx->Color.AlphaFunc != oldAlphaFunc ||
 433                     ctx->Color.AlphaRef != oldAlphaRef) &&
 434                    ctx->Driver.AlphaFunc)
 435                   (*ctx->Driver.AlphaFunc)( ctx, ctx->Color.AlphaFunc,
 436                                             ctx->Color.AlphaRef / 255.0F);
 437                if ((ctx->Color.BlendSrcRGB != oldBlendSrc ||
 438                     ctx->Color.BlendSrcRGB != oldBlendDst) &&
 439                    ctx->Driver.BlendFunc)
 440                   (*ctx->Driver.BlendFunc)( ctx, ctx->Color.BlendSrcRGB,
 441                                             ctx->Color.BlendDstRGB);
 442                if (ctx->Color.LogicOp != oldLogicOp &&
 443                    ctx->Driver.LogicOpcode)
 444                   ctx->Driver.LogicOpcode( ctx, ctx->Color.LogicOp );
 445             }
 446             break;
 447          case GL_CURRENT_BIT:
 448             MEMCPY( &ctx->Current, attr->data,
 449                     sizeof(struct gl_current_attrib) );
 450             break;
 451          case GL_DEPTH_BUFFER_BIT:
 452             {
 453                GLenum oldDepthFunc = ctx->Depth.Func;
 454                GLboolean oldDepthMask = ctx->Depth.Mask;
 455                GLfloat oldDepthClear = ctx->Depth.Clear;
 456                MEMCPY( &ctx->Depth, attr->data,
 457                        sizeof(struct gl_depthbuffer_attrib) );
 458                if (ctx->Depth.Func != oldDepthFunc && ctx->Driver.DepthFunc)
 459                   (*ctx->Driver.DepthFunc)( ctx, ctx->Depth.Func );
 460                if (ctx->Depth.Mask != oldDepthMask && ctx->Driver.DepthMask)
 461                   (*ctx->Driver.DepthMask)( ctx, ctx->Depth.Mask );
 462                if (ctx->Depth.Clear != oldDepthClear && ctx->Driver.ClearDepth)
 463                   (*ctx->Driver.ClearDepth)( ctx, ctx->Depth.Clear );
 464             }
 465             break;
 466          case GL_ENABLE_BIT:
 467             {
 468                const struct gl_enable_attrib *enable;
 469                enable = (const struct gl_enable_attrib *) attr->data;
 470
 471 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)          \
 472         if ((VALUE) != (NEWVALUE)) {                    \
 473            _mesa_set_enable( ctx, ENUM, (NEWVALUE) );   \
 474         }
 475
 476                TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
 477                TEST_AND_UPDATE(ctx->Transform.Normalize, enable->AutoNormal, GL_NORMALIZE);
 478                TEST_AND_UPDATE(ctx->Color.BlendEnabled, enable->Blend, GL_BLEND);
 479                {
 480                   GLuint i;
 481                   for (i=0;i<MAX_CLIP_PLANES;i++) {
 482                      if (ctx->Transform.ClipEnabled[i] != enable->ClipPlane[i])
 483                         _mesa_set_enable( ctx, (GLenum) (GL_CLIP_PLANE0 + i), enable->ClipPlane[i] );
 484                   }
 485                }
 486                TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial, GL_COLOR_MATERIAL);
 487                TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
 488                TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
 489                TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
 490                TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
 491                TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
 492                TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
 493                TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple, GL_LINE_STIPPLE);
 494                TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp, GL_INDEX_LOGIC_OP);
 495                TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp, GL_COLOR_LOGIC_OP);
 496                TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
 497                TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
 498                TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
 499                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1, GL_MAP1_TEXTURE_COORD_1);
 500                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2, GL_MAP1_TEXTURE_COORD_2);
 501                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3, GL_MAP1_TEXTURE_COORD_3);
 502                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4, GL_MAP1_TEXTURE_COORD_4);
 503                TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3, GL_MAP1_VERTEX_3);
 504                TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4, GL_MAP1_VERTEX_4);
 505                TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
 506                TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
 507                TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
 508                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1, GL_MAP2_TEXTURE_COORD_1);
 509                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2, GL_MAP2_TEXTURE_COORD_2);
 510                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3, GL_MAP2_TEXTURE_COORD_3);
 511                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4, GL_MAP2_TEXTURE_COORD_4);
 512                TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3, GL_MAP2_VERTEX_3);
 513                TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4, GL_MAP2_VERTEX_4);
 514                TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
 515                TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals, GL_RESCALE_NORMAL_EXT);
 516                TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth, GL_POINT_SMOOTH);
 517                TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint, GL_POLYGON_OFFSET_POINT);
 518                TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine, GL_POLYGON_OFFSET_LINE);
 519                TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill, GL_POLYGON_OFFSET_FILL);
 520                TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth, GL_POLYGON_SMOOTH);
 521                TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple, GL_POLYGON_STIPPLE);
 522                TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
 523                TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
 524                if (ctx->Texture.Enabled != enable->Texture) {
 525                   ctx->Texture.Enabled = enable->Texture;
 526                   if (ctx->Driver.Enable) {
 527                      if (ctx->Driver.ActiveTexture)
 528                         (*ctx->Driver.ActiveTexture)( ctx, 0 );
 529                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D, (GLboolean) (enable->Texture & TEXTURE0_1D) );
 530                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D, (GLboolean) (enable->Texture & TEXTURE0_2D) );
 531                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D, (GLboolean) (enable->Texture & TEXTURE0_3D) );
 532                      if (ctx->Driver.ActiveTexture)
 533                         (*ctx->Driver.ActiveTexture)( ctx, 1 );
 534                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D, (GLboolean) (enable->Texture & TEXTURE1_1D) );
 535                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D, (GLboolean) (enable->Texture & TEXTURE1_2D) );
 536                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D, (GLboolean) (enable->Texture & TEXTURE1_3D) );
 537                      if (ctx->Driver.ActiveTexture)
 538                         (*ctx->Driver.ActiveTexture)( ctx, ctx->Texture.CurrentUnit );
 539                   }
 540                }
 541 #undef TEST_AND_UPDATE
 542                {
 543                   GLuint i;
 544                   for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 545                      if (ctx->Texture.Unit[i].TexGenEnabled != enable->TexGen[i]) {
 546                         ctx->Texture.Unit[i].TexGenEnabled = enable->TexGen[i];
 547
 548                         /* ctx->Enabled recalculated in state change
 549                            processing */
 550
 551                         if (ctx->Driver.Enable) {
 552                            if (ctx->Driver.ActiveTexture)
 553                               (*ctx->Driver.ActiveTexture)( ctx, i );
 554                            if (enable->TexGen[i] & S_BIT)
 555                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_TRUE);
 556                            else
 557                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_FALSE);
 558                            if (enable->TexGen[i] & T_BIT)
 559                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_TRUE);
 560                            else
 561                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_FALSE);
 562                            if (enable->TexGen[i] & R_BIT)
 563                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_TRUE);
 564                            else
 565                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_FALSE);
 566                            if (enable->TexGen[i] & Q_BIT)
 567                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
 568                            else
 569                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
 570                         }
 571                      }
 572                   }
 573                   if (ctx->Driver.ActiveTexture)
 574                      (*ctx->Driver.ActiveTexture)( ctx, ctx->Texture.CurrentUnit );
 575                }
 576             }
 577             break;
 578          case GL_EVAL_BIT:
 579             MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
 580             break;
 581          case GL_FOG_BIT:
 582             {
 583                GLboolean anyChange = (GLboolean) (memcmp( &ctx->Fog, attr->data, sizeof(struct gl_fog_attrib) ) != 0);
 584                MEMCPY( &ctx->Fog, attr->data, sizeof(struct gl_fog_attrib) );
 585                if (anyChange && ctx->Driver.Fogfv) {
 586                   const GLfloat mode = (GLfloat) ctx->Fog.Mode;
 587                   const GLfloat density = ctx->Fog.Density;
 588                   const GLfloat start = ctx->Fog.Start;
 589                   const GLfloat end = ctx->Fog.End;
 590                   const GLfloat index = ctx->Fog.Index;
 591                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_MODE, &mode);
 592                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_DENSITY, &density );
 593                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_START, &start );
 594                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_END, &end );
 595                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_INDEX, &index );
 596                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_COLOR, ctx->Fog.Color );
 597                }
 598                ctx->Enabled &= ~ENABLE_FOG;
 599                if (ctx->Fog.Enabled) ctx->Enabled |= ENABLE_FOG;
 600             }
 601             break;
 602          case GL_HINT_BIT:
 603             MEMCPY( &ctx->Hint, attr->data, sizeof(struct gl_hint_attrib) );
 604             if (ctx->Driver.Hint) {
 605                (*ctx->Driver.Hint)( ctx, GL_PERSPECTIVE_CORRECTION_HINT,
 606                                     ctx->Hint.PerspectiveCorrection );
 607                (*ctx->Driver.Hint)( ctx, GL_POINT_SMOOTH_HINT,
 608                                     ctx->Hint.PointSmooth);
 609                (*ctx->Driver.Hint)( ctx, GL_LINE_SMOOTH_HINT,
 610                                     ctx->Hint.LineSmooth );
 611                (*ctx->Driver.Hint)( ctx, GL_POLYGON_SMOOTH_HINT,
 612                                     ctx->Hint.PolygonSmooth );
 613                (*ctx->Driver.Hint)( ctx, GL_FOG_HINT, ctx->Hint.Fog );
 614             }
 615             break;
 616          case GL_LIGHTING_BIT:
 617             MEMCPY( &ctx->Light, attr->data, sizeof(struct gl_light_attrib) );
 618             if (ctx->Driver.Enable) {
 619                GLuint i;
 620                for (i = 0; i < MAX_LIGHTS; i++) {
 621                   GLenum light = (GLenum) (GL_LIGHT0 + i);
 622                   (*ctx->Driver.Enable)( ctx, light, ctx->Light.Light[i].Enabled );
 623                }
 624                (*ctx->Driver.Enable)( ctx, GL_LIGHTING, ctx->Light.Enabled );
 625             }
 626             if (ctx->Light.ShadeModel == GL_FLAT)
 627                ctx->TriangleCaps |= DD_FLATSHADE;
 628             else
 629                ctx->TriangleCaps &= ~DD_FLATSHADE;
 630             if (ctx->Driver.ShadeModel)
 631                (*ctx->Driver.ShadeModel)(ctx, ctx->Light.ShadeModel);
 632             ctx->Enabled &= ~ENABLE_LIGHT;
 633             if (ctx->Light.Enabled && !is_empty_list(&ctx->Light.EnabledList))
 634                ctx->Enabled |= ENABLE_LIGHT;
 635             break;
 636          case GL_LINE_BIT:
 637             MEMCPY( &ctx->Line, attr->data, sizeof(struct gl_line_attrib) );
 638             if (ctx->Driver.Enable) {
 639                (*ctx->Driver.Enable)( ctx, GL_LINE_SMOOTH, ctx->Line.SmoothFlag );
 640                (*ctx->Driver.Enable)( ctx, GL_LINE_STIPPLE, ctx->Line.StippleFlag );
 641             }
 642             break;
 643          case GL_LIST_BIT:
 644             MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
 645             break;
 646          case GL_PIXEL_MODE_BIT:
 647             MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
 648             break;
 649          case GL_POINT_BIT:
 650             MEMCPY( &ctx->Point, attr->data, sizeof(struct gl_point_attrib) );
 651             if (ctx->Driver.Enable)
 652                (*ctx->Driver.Enable)( ctx, GL_POINT_SMOOTH, ctx->Point.SmoothFlag );
 653             break;
 654          case GL_POLYGON_BIT:
 655             {
 656                GLenum oldFrontMode = ctx->Polygon.FrontMode;
 657                GLenum oldBackMode = ctx->Polygon.BackMode;
 658                MEMCPY( &ctx->Polygon, attr->data,
 659                        sizeof(struct gl_polygon_attrib) );
 660                if ((ctx->Polygon.FrontMode != oldFrontMode ||
 661                     ctx->Polygon.BackMode != oldBackMode) &&
 662                    ctx->Driver.PolygonMode) {
 663                   (*ctx->Driver.PolygonMode)( ctx, GL_FRONT, ctx->Polygon.FrontMode);
 664                   (*ctx->Driver.PolygonMode)( ctx, GL_BACK, ctx->Polygon.BackMode);
 665                }
 666                if (ctx->Driver.CullFace)
 667                   ctx->Driver.CullFace( ctx, ctx->Polygon.CullFaceMode );
 668
 669                if (ctx->Driver.FrontFace)
 670                   ctx->Driver.FrontFace( ctx, ctx->Polygon.FrontFace );
 671
 672                if (ctx->Driver.Enable)
 673                   (*ctx->Driver.Enable)( ctx, GL_POLYGON_SMOOTH, ctx->Polygon.SmoothFlag );
 674             }
 675             break;
 676          case GL_POLYGON_STIPPLE_BIT:
 677             MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
 678             if (ctx->Driver.PolygonStipple)
 679                ctx->Driver.PolygonStipple( ctx, attr->data );
 680             break;
 681          case GL_SCISSOR_BIT:
 682             MEMCPY( &ctx->Scissor, attr->data,
 683                     sizeof(struct gl_scissor_attrib) );
 684             if (ctx->Driver.Enable)
 685                (*ctx->Driver.Enable)( ctx, GL_SCISSOR_TEST, ctx->Scissor.Enabled );
 686             if (ctx->Driver.Scissor)
 687                ctx->Driver.Scissor( ctx, ctx->Scissor.X, ctx->Scissor.Y,
 688                                     ctx->Scissor.Width, ctx->Scissor.Height );
 689             break;
 690          case GL_STENCIL_BUFFER_BIT:
 691             MEMCPY( &ctx->Stencil, attr->data,
 692                     sizeof(struct gl_stencil_attrib) );
 693             if (ctx->Driver.StencilFunc)
 694                (*ctx->Driver.StencilFunc)( ctx, ctx->Stencil.Function,
 695                                    ctx->Stencil.Ref, ctx->Stencil.ValueMask);
 696             if (ctx->Driver.StencilMask)
 697                (*ctx->Driver.StencilMask)( ctx, ctx->Stencil.WriteMask );
 698             if (ctx->Driver.StencilOp)
 699                (*ctx->Driver.StencilOp)( ctx, ctx->Stencil.FailFunc,
 700                               ctx->Stencil.ZFailFunc, ctx->Stencil.ZPassFunc);
 701             if (ctx->Driver.ClearStencil)
 702                (*ctx->Driver.ClearStencil)( ctx, ctx->Stencil.Clear );
 703             if (ctx->Driver.Enable)
 704                (*ctx->Driver.Enable)( ctx, GL_STENCIL_TEST, ctx->Stencil.Enabled );
 705             ctx->TriangleCaps &= ~DD_STENCIL;
 706             if (ctx->Stencil.Enabled)
 707                ctx->TriangleCaps |= DD_STENCIL;
 708
 709             break;
 710          case GL_TRANSFORM_BIT:
 711             MEMCPY( &ctx->Transform, attr->data,
 712                     sizeof(struct gl_transform_attrib) );
 713             if (ctx->Driver.Enable) {
 714                (*ctx->Driver.Enable)( ctx, GL_NORMALIZE, ctx->Transform.Normalize );
 715                (*ctx->Driver.Enable)( ctx, GL_RESCALE_NORMAL_EXT, ctx->Transform.RescaleNormals );
 716             }
 717             ctx->Enabled &= ~(ENABLE_NORMALIZE|ENABLE_RESCALE);
 718             if (ctx->Transform.Normalize) ctx->Enabled |= ENABLE_NORMALIZE;
 719             if (ctx->Transform.RescaleNormals) ctx->Enabled |= ENABLE_RESCALE;
 720             break;
 721          case GL_TEXTURE_BIT:
 722             /* Take care of texture object reference counters */
 723             {
 724                GLuint u;
 725                for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 726                   ctx->Texture.Unit[u].CurrentD[1]->RefCount--;
 727                   ctx->Texture.Unit[u].CurrentD[2]->RefCount--;
 728                   ctx->Texture.Unit[u].CurrentD[3]->RefCount--;
 729                }
 730                MEMCPY( &ctx->Texture, attr->data,
 731                        sizeof(struct gl_texture_attrib) );
 732                /* restore state of the currently bound texture objects */
 733                for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 734                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[1],
 735                                      &(ctx->Texture.Unit[u].Saved1D) );
 736                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[2],
 737                                      &(ctx->Texture.Unit[u].Saved2D) );
 738                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[3],
 739                                      &(ctx->Texture.Unit[u].Saved3D) );
 740                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[1] );
 741                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[2] );
 742                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[3] );
 743
 744                }
 745             }
 746             break;
 747          case GL_VIEWPORT_BIT:
 748          {
 749             struct gl_viewport_attrib *v =
 750                (struct gl_viewport_attrib *)attr->data;
 751
 752             _mesa_Viewport( v->X, v->Y, v->Width, v->Height );
 753             _mesa_DepthRange( v->Near, v->Far );
 754             break;
 755          }
 756          default:
 757             gl_problem( ctx, "Bad attrib flag in PopAttrib");
 758             break;
 759       }
 760
 761       next = attr->next;
 762       FREE( attr->data );
 763       FREE( attr );
 764       attr = next;
 765    }
 766
 767    ctx->NewState = NEW_ALL;
 768 }
 769
 770
 771 #define GL_CLIENT_PACK_BIT (1<<20)
 772 #define GL_CLIENT_UNPACK_BIT (1<<21)
 773
 774
 775 void
 776 _mesa_PushClientAttrib(GLbitfield mask)
 777 {
 778    struct gl_attrib_node *newnode;
 779    struct gl_attrib_node *head;
 780
 781    GET_CURRENT_CONTEXT(ctx);
 782    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPushClientAttrib");
 783
 784    if (ctx->ClientAttribStackDepth>=MAX_CLIENT_ATTRIB_STACK_DEPTH) {
 785       gl_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
 786       return;
 787    }
 788
 789    /* Build linked list of attribute nodes which save all attribute */
 790    /* groups specified by the mask. */
 791    head = NULL;
 792
 793    if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
 794       struct gl_pixelstore_attrib *attr;
 795       /* packing attribs */
 796       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
 797       MEMCPY( attr, &ctx->Pack, sizeof(struct gl_pixelstore_attrib) );
 798       newnode = new_attrib_node( GL_CLIENT_PACK_BIT );
 799       newnode->data = attr;
 800       newnode->next = head;
 801       head = newnode;
 802       /* unpacking attribs */
 803       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
 804       MEMCPY( attr, &ctx->Unpack, sizeof(struct gl_pixelstore_attrib) );
 805       newnode = new_attrib_node( GL_CLIENT_UNPACK_BIT );
 806       newnode->data = attr;
 807       newnode->next = head;
 808       head = newnode;
 809    }
 810    if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
 811       struct gl_array_attrib *attr;
 812       attr = MALLOC_STRUCT( gl_array_attrib );
 813       MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
 814       newnode = new_attrib_node( GL_CLIENT_VERTEX_ARRAY_BIT );
 815       newnode->data = attr;
 816       newnode->next = head;
 817       head = newnode;
 818    }
 819
 820    ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
 821    ctx->ClientAttribStackDepth++;
 822 }
 823
 824
 825
 826
 827 void
 828 _mesa_PopClientAttrib(void)
 829 {
 830    struct gl_attrib_node *attr, *next;
 831
 832    GET_CURRENT_CONTEXT(ctx);
 833    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPopClientAttrib");
 834
 835    if (ctx->ClientAttribStackDepth==0) {
 836       gl_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
 837       return;
 838    }
 839
 840    ctx->ClientAttribStackDepth--;
 841    attr = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
 842
 843    while (attr) {
 844       switch (attr->kind) {
 845          case GL_CLIENT_PACK_BIT:
 846             MEMCPY( &ctx->Pack, attr->data,
 847                     sizeof(struct gl_pixelstore_attrib) );
 848             break;
 849          case GL_CLIENT_UNPACK_BIT:
 850             MEMCPY( &ctx->Unpack, attr->data,
 851                     sizeof(struct gl_pixelstore_attrib) );
 852             break;
 853          case GL_CLIENT_VERTEX_ARRAY_BIT:
 854             MEMCPY( &ctx->Array, attr->data,
 855                     sizeof(struct gl_array_attrib) );
 856             break;
 857          default:
 858             gl_problem( ctx, "Bad attrib flag in PopClientAttrib");
 859             break;
 860       }
 861
 862       next = attr->next;
 863       FREE( attr->data );
 864       FREE( attr );
 865       attr = next;
 866    }
 867
 868    ctx->NewState = NEW_ALL;
 869 }
 870
 871
 872