src/mesa/main/attrib.c

   1 /* $Id: attrib.c,v 1.11 1999/11/11 01:22:25 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.1
   6  *
   7  * Copyright (C) 1999  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 "context.h"
  34 #include "glmisc.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 *new_attrib_node( GLbitfield kind )
  51 {
  52    struct gl_attrib_node *an = MALLOC_STRUCT(gl_attrib_node);
  53    if (an) {
  54       an->kind = kind;
  55    }
  56    return an;
  57 }
  58
  59
  60
  61 /*
  62  * Copy texture object state from one texture object to another.
  63  */
  64 static void copy_texobj_state( struct gl_texture_object *dest,
  65                                const struct gl_texture_object *src )
  66 {
  67    /*
  68    dest->Name = src->Name;
  69    dest->Dimensions = src->Dimensions;
  70    */
  71    dest->Priority = src->Priority;
  72    dest->BorderColor[0] = src->BorderColor[0];
  73    dest->BorderColor[1] = src->BorderColor[1];
  74    dest->BorderColor[2] = src->BorderColor[2];
  75    dest->BorderColor[3] = src->BorderColor[3];
  76    dest->WrapS = src->WrapS;
  77    dest->WrapT = src->WrapT;
  78    dest->WrapR = src->WrapR;
  79    dest->MinFilter = src->MinFilter;
  80    dest->MagFilter = src->MagFilter;
  81    dest->MinLod = src->MinLod;
  82    dest->MaxLod = src->MaxLod;
  83    dest->BaseLevel = src->BaseLevel;
  84    dest->MaxLevel = src->MaxLevel;
  85    dest->P = src->P;
  86    dest->M = src->M;
  87    dest->MinMagThresh = src->MinMagThresh;
  88    dest->Palette = src->Palette;
  89    dest->Complete = src->Complete;
  90    dest->SampleFunc = src->SampleFunc;
  91 }
  92
  93
  94
  95 void gl_PushAttrib( GLcontext* ctx, GLbitfield mask )
  96 {
  97    struct gl_attrib_node *newnode;
  98    struct gl_attrib_node *head;
  99
 100    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPushAttrib");
 101
 102    if (MESA_VERBOSE&VERBOSE_API)
 103       fprintf(stderr, "glPushAttrib %x\n", mask);
 104
 105    if (ctx->AttribStackDepth>=MAX_ATTRIB_STACK_DEPTH) {
 106       gl_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
 107       return;
 108    }
 109
 110    /* Build linked list of attribute nodes which save all attribute */
 111    /* groups specified by the mask. */
 112    head = NULL;
 113
 114    if (mask & GL_ACCUM_BUFFER_BIT) {
 115       struct gl_accum_attrib *attr;
 116       attr = MALLOC_STRUCT( gl_accum_attrib );
 117       MEMCPY( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );
 118       newnode = new_attrib_node( GL_ACCUM_BUFFER_BIT );
 119       newnode->data = attr;
 120       newnode->next = head;
 121       head = newnode;
 122    }
 123
 124    if (mask & GL_COLOR_BUFFER_BIT) {
 125       struct gl_colorbuffer_attrib *attr;
 126       attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
 127       MEMCPY( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
 128       newnode = new_attrib_node( GL_COLOR_BUFFER_BIT );
 129       newnode->data = attr;
 130       newnode->next = head;
 131       head = newnode;
 132    }
 133
 134    if (mask & GL_CURRENT_BIT) {
 135       struct gl_current_attrib *attr;
 136       attr = MALLOC_STRUCT( gl_current_attrib );
 137       MEMCPY( attr, &ctx->Current, sizeof(struct gl_current_attrib) );
 138       newnode = new_attrib_node( GL_CURRENT_BIT );
 139       newnode->data = attr;
 140       newnode->next = head;
 141       head = newnode;
 142    }
 143
 144    if (mask & GL_DEPTH_BUFFER_BIT) {
 145       struct gl_depthbuffer_attrib *attr;
 146       attr = MALLOC_STRUCT( gl_depthbuffer_attrib );
 147       MEMCPY( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );
 148       newnode = new_attrib_node( GL_DEPTH_BUFFER_BIT );
 149       newnode->data = attr;
 150       newnode->next = head;
 151       head = newnode;
 152    }
 153
 154    if (mask & GL_ENABLE_BIT) {
 155       struct gl_enable_attrib *attr;
 156       GLuint i;
 157       attr = MALLOC_STRUCT( gl_enable_attrib );
 158       /* Copy enable flags from all other attributes into the enable struct. */
 159       attr->AlphaTest = ctx->Color.AlphaEnabled;
 160       attr->AutoNormal = ctx->Eval.AutoNormal;
 161       attr->Blend = ctx->Color.BlendEnabled;
 162       for (i=0;i<MAX_CLIP_PLANES;i++) {
 163          attr->ClipPlane[i] = ctx->Transform.ClipEnabled[i];
 164       }
 165       attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;
 166       attr->CullFace = ctx->Polygon.CullFlag;
 167       attr->DepthTest = ctx->Depth.Test;
 168       attr->Dither = ctx->Color.DitherFlag;
 169       attr->Fog = ctx->Fog.Enabled;
 170       for (i=0;i<MAX_LIGHTS;i++) {
 171          attr->Light[i] = ctx->Light.Light[i].Enabled;
 172       }
 173       attr->Lighting = ctx->Light.Enabled;
 174       attr->LineSmooth = ctx->Line.SmoothFlag;
 175       attr->LineStipple = ctx->Line.StippleFlag;
 176       attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
 177       attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
 178       attr->Map1Color4 = ctx->Eval.Map1Color4;
 179       attr->Map1Index = ctx->Eval.Map1Index;
 180       attr->Map1Normal = ctx->Eval.Map1Normal;
 181       attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
 182       attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
 183       attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
 184       attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
 185       attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
 186       attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
 187       attr->Map2Color4 = ctx->Eval.Map2Color4;
 188       attr->Map2Index = ctx->Eval.Map2Index;
 189       attr->Map2Normal = ctx->Eval.Map2Normal;
 190       attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
 191       attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
 192       attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
 193       attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
 194       attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
 195       attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
 196       attr->Normalize = ctx->Transform.Normalize;
 197       attr->PointSmooth = ctx->Point.SmoothFlag;
 198       attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;
 199       attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;
 200       attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;
 201       attr->PolygonSmooth = ctx->Polygon.SmoothFlag;
 202       attr->PolygonStipple = ctx->Polygon.StippleFlag;
 203       attr->RescaleNormals = ctx->Transform.RescaleNormals;
 204       attr->Scissor = ctx->Scissor.Enabled;
 205       attr->Stencil = ctx->Stencil.Enabled;
 206       attr->Texture = ctx->Texture.Enabled;
 207       for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 208          attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
 209       }
 210       newnode = new_attrib_node( GL_ENABLE_BIT );
 211       newnode->data = attr;
 212       newnode->next = head;
 213       head = newnode;
 214    }
 215
 216    if (mask & GL_EVAL_BIT) {
 217       struct gl_eval_attrib *attr;
 218       attr = MALLOC_STRUCT( gl_eval_attrib );
 219       MEMCPY( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
 220       newnode = new_attrib_node( GL_EVAL_BIT );
 221       newnode->data = attr;
 222       newnode->next = head;
 223       head = newnode;
 224    }
 225
 226    if (mask & GL_FOG_BIT) {
 227       struct gl_fog_attrib *attr;
 228       attr = MALLOC_STRUCT( gl_fog_attrib );
 229       MEMCPY( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
 230       newnode = new_attrib_node( GL_FOG_BIT );
 231       newnode->data = attr;
 232       newnode->next = head;
 233       head = newnode;
 234    }
 235
 236    if (mask & GL_HINT_BIT) {
 237       struct gl_hint_attrib *attr;
 238       attr = MALLOC_STRUCT( gl_hint_attrib );
 239       MEMCPY( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
 240       newnode = new_attrib_node( GL_HINT_BIT );
 241       newnode->data = attr;
 242       newnode->next = head;
 243       head = newnode;
 244    }
 245
 246    if (mask & GL_LIGHTING_BIT) {
 247       struct gl_light_attrib *attr;
 248       attr = MALLOC_STRUCT( gl_light_attrib );
 249       MEMCPY( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
 250       newnode = new_attrib_node( GL_LIGHTING_BIT );
 251       newnode->data = attr;
 252       newnode->next = head;
 253       head = newnode;
 254    }
 255
 256    if (mask & GL_LINE_BIT) {
 257       struct gl_line_attrib *attr;
 258       attr = MALLOC_STRUCT( gl_line_attrib );
 259       MEMCPY( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
 260       newnode = new_attrib_node( GL_LINE_BIT );
 261       newnode->data = attr;
 262       newnode->next = head;
 263       head = newnode;
 264    }
 265
 266    if (mask & GL_LIST_BIT) {
 267       struct gl_list_attrib *attr;
 268       attr = MALLOC_STRUCT( gl_list_attrib );
 269       MEMCPY( attr, &ctx->List, sizeof(struct gl_list_attrib) );
 270       newnode = new_attrib_node( GL_LIST_BIT );
 271       newnode->data = attr;
 272       newnode->next = head;
 273       head = newnode;
 274    }
 275
 276    if (mask & GL_PIXEL_MODE_BIT) {
 277       struct gl_pixel_attrib *attr;
 278       attr = MALLOC_STRUCT( gl_pixel_attrib );
 279       MEMCPY( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
 280       newnode = new_attrib_node( GL_PIXEL_MODE_BIT );
 281       newnode->data = attr;
 282       newnode->next = head;
 283       head = newnode;
 284    }
 285
 286    if (mask & GL_POINT_BIT) {
 287       struct gl_point_attrib *attr;
 288       attr = MALLOC_STRUCT( gl_point_attrib );
 289       MEMCPY( attr, &ctx->Point, sizeof(struct gl_point_attrib) );
 290       newnode = new_attrib_node( GL_POINT_BIT );
 291       newnode->data = attr;
 292       newnode->next = head;
 293       head = newnode;
 294    }
 295
 296    if (mask & GL_POLYGON_BIT) {
 297       struct gl_polygon_attrib *attr;
 298       attr = MALLOC_STRUCT( gl_polygon_attrib );
 299       MEMCPY( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );
 300       newnode = new_attrib_node( GL_POLYGON_BIT );
 301       newnode->data = attr;
 302       newnode->next = head;
 303       head = newnode;
 304    }
 305
 306    if (mask & GL_POLYGON_STIPPLE_BIT) {
 307       GLuint *stipple;
 308       stipple = (GLuint *) MALLOC( 32*sizeof(GLuint) );
 309       MEMCPY( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );
 310       newnode = new_attrib_node( GL_POLYGON_STIPPLE_BIT );
 311       newnode->data = stipple;
 312       newnode->next = head;
 313       head = newnode;
 314    }
 315
 316    if (mask & GL_SCISSOR_BIT) {
 317       struct gl_scissor_attrib *attr;
 318       attr = MALLOC_STRUCT( gl_scissor_attrib );
 319       MEMCPY( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );
 320       newnode = new_attrib_node( GL_SCISSOR_BIT );
 321       newnode->data = attr;
 322       newnode->next = head;
 323       head = newnode;
 324    }
 325
 326    if (mask & GL_STENCIL_BUFFER_BIT) {
 327       struct gl_stencil_attrib *attr;
 328       attr = MALLOC_STRUCT( gl_stencil_attrib );
 329       MEMCPY( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );
 330       newnode = new_attrib_node( GL_STENCIL_BUFFER_BIT );
 331       newnode->data = attr;
 332       newnode->next = head;
 333       head = newnode;
 334    }
 335
 336    if (mask & GL_TEXTURE_BIT) {
 337       struct gl_texture_attrib *attr;
 338       GLuint u;
 339       /* Take care of texture object reference counters */
 340       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 341          ctx->Texture.Unit[u].CurrentD[1]->RefCount++;
 342          ctx->Texture.Unit[u].CurrentD[2]->RefCount++;
 343          ctx->Texture.Unit[u].CurrentD[3]->RefCount++;
 344       }
 345       attr = MALLOC_STRUCT( gl_texture_attrib );
 346       MEMCPY( attr, &ctx->Texture, sizeof(struct gl_texture_attrib) );
 347       /* copy state of the currently bound texture objects */
 348       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 349          copy_texobj_state(&attr->Unit[u].Saved1D, attr->Unit[u].CurrentD[1]);
 350          copy_texobj_state(&attr->Unit[u].Saved2D, attr->Unit[u].CurrentD[2]);
 351          copy_texobj_state(&attr->Unit[u].Saved3D, attr->Unit[u].CurrentD[3]);
 352       }
 353       newnode = new_attrib_node( GL_TEXTURE_BIT );
 354       newnode->data = attr;
 355       newnode->next = head;
 356       head = newnode;
 357    }
 358
 359    if (mask & GL_TRANSFORM_BIT) {
 360       struct gl_transform_attrib *attr;
 361       attr = MALLOC_STRUCT( gl_transform_attrib );
 362       MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
 363       newnode = new_attrib_node( GL_TRANSFORM_BIT );
 364       newnode->data = attr;
 365       newnode->next = head;
 366       head = newnode;
 367    }
 368
 369    if (mask & GL_VIEWPORT_BIT) {
 370       struct gl_viewport_attrib *attr;
 371       attr = MALLOC_STRUCT( gl_viewport_attrib );
 372       MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
 373       newnode = new_attrib_node( GL_VIEWPORT_BIT );
 374       newnode->data = attr;
 375       newnode->next = head;
 376       head = newnode;
 377    }
 378
 379    ctx->AttribStack[ctx->AttribStackDepth] = head;
 380    ctx->AttribStackDepth++;
 381 }
 382
 383
 384
 385 /*
 386  * This function is kind of long just because we have to call a lot
 387  * of device driver functions to update device driver state.
 388  */
 389 void gl_PopAttrib( GLcontext* ctx )
 390 {
 391    struct gl_attrib_node *attr, *next;
 392
 393    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPopAttrib");
 394
 395
 396    if (ctx->AttribStackDepth==0) {
 397       gl_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
 398       return;
 399    }
 400
 401    ctx->AttribStackDepth--;
 402    attr = ctx->AttribStack[ctx->AttribStackDepth];
 403
 404    while (attr) {
 405
 406       if (MESA_VERBOSE&VERBOSE_API)
 407          fprintf(stderr, "glPopAttrib %s\n", gl_lookup_enum_by_nr(attr->kind));
 408
 409       switch (attr->kind) {
 410          case GL_ACCUM_BUFFER_BIT:
 411             MEMCPY( &ctx->Accum, attr->data, sizeof(struct gl_accum_attrib) );
 412             break;
 413          case GL_COLOR_BUFFER_BIT:
 414             {
 415                GLenum oldDrawBuffer = ctx->Color.DrawBuffer;
 416                GLenum oldAlphaFunc = ctx->Color.AlphaFunc;
 417                GLubyte oldAlphaRef = ctx->Color.AlphaRef;
 418                GLenum oldBlendSrc = ctx->Color.BlendSrcRGB;
 419                GLenum oldBlendDst = ctx->Color.BlendDstRGB;
 420                MEMCPY( &ctx->Color, attr->data,
 421                        sizeof(struct gl_colorbuffer_attrib) );
 422                if (ctx->Color.DrawBuffer != oldDrawBuffer) {
 423                   _mesa_DrawBuffer( ctx->Color.DrawBuffer);
 424                }
 425                if ((ctx->Color.AlphaFunc != oldAlphaFunc ||
 426                     ctx->Color.AlphaRef != oldAlphaRef) &&
 427                    ctx->Driver.AlphaFunc)
 428                   (*ctx->Driver.AlphaFunc)( ctx, ctx->Color.AlphaFunc,
 429                                             ctx->Color.AlphaRef / 255.0F);
 430                if ((ctx->Color.BlendSrcRGB != oldBlendSrc ||
 431                     ctx->Color.BlendSrcRGB != oldBlendDst) &&
 432                    ctx->Driver.BlendFunc)
 433                   (*ctx->Driver.BlendFunc)( ctx, ctx->Color.BlendSrcRGB,
 434                                             ctx->Color.BlendDstRGB);
 435             }
 436             break;
 437          case GL_CURRENT_BIT:
 438             MEMCPY( &ctx->Current, attr->data,
 439                     sizeof(struct gl_current_attrib) );
 440             break;
 441          case GL_DEPTH_BUFFER_BIT:
 442             {
 443                GLenum oldDepthFunc = ctx->Depth.Func;
 444                GLboolean oldDepthMask = ctx->Depth.Mask;
 445                GLfloat oldDepthClear = ctx->Depth.Clear;
 446                MEMCPY( &ctx->Depth, attr->data,
 447                        sizeof(struct gl_depthbuffer_attrib) );
 448                if (ctx->Depth.Func != oldDepthFunc && ctx->Driver.DepthFunc)
 449                   (*ctx->Driver.DepthFunc)( ctx, ctx->Depth.Func );
 450                if (ctx->Depth.Mask != oldDepthMask && ctx->Driver.DepthMask)
 451                   (*ctx->Driver.DepthMask)( ctx, ctx->Depth.Mask );
 452                if (ctx->Depth.Clear != oldDepthClear && ctx->Driver.ClearDepth)
 453                   (*ctx->Driver.ClearDepth)( ctx, ctx->Depth.Clear );
 454             }
 455             break;
 456          case GL_ENABLE_BIT:
 457             {
 458                const struct gl_enable_attrib *enable;
 459                enable = (const struct gl_enable_attrib *) attr->data;
 460
 461 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)          \
 462         if ((VALUE) != (NEWVALUE)) {                    \
 463            _mesa_set_enable( ctx, ENUM, (NEWVALUE) );   \
 464         }
 465
 466                TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
 467                TEST_AND_UPDATE(ctx->Transform.Normalize, enable->AutoNormal, GL_NORMALIZE);
 468                TEST_AND_UPDATE(ctx->Color.BlendEnabled, enable->Blend, GL_BLEND);
 469                {
 470                   GLuint i;
 471                   for (i=0;i<MAX_CLIP_PLANES;i++) {
 472                      if (ctx->Transform.ClipEnabled[i] != enable->ClipPlane[i])
 473                         _mesa_set_enable( ctx, (GLenum) (GL_CLIP_PLANE0 + i), enable->ClipPlane[i] );
 474                   }
 475                }
 476                TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial, GL_COLOR_MATERIAL);
 477                TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
 478                TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
 479                TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
 480                TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
 481                TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
 482                TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
 483                TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple, GL_LINE_STIPPLE);
 484                TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp, GL_INDEX_LOGIC_OP);
 485                TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp, GL_COLOR_LOGIC_OP);
 486                TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
 487                TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
 488                TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
 489                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1, GL_MAP1_TEXTURE_COORD_1);
 490                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2, GL_MAP1_TEXTURE_COORD_2);
 491                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3, GL_MAP1_TEXTURE_COORD_3);
 492                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4, GL_MAP1_TEXTURE_COORD_4);
 493                TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3, GL_MAP1_VERTEX_3);
 494                TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4, GL_MAP1_VERTEX_4);
 495                TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
 496                TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
 497                TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
 498                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1, GL_MAP2_TEXTURE_COORD_1);
 499                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2, GL_MAP2_TEXTURE_COORD_2);
 500                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3, GL_MAP2_TEXTURE_COORD_3);
 501                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4, GL_MAP2_TEXTURE_COORD_4);
 502                TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3, GL_MAP2_VERTEX_3);
 503                TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4, GL_MAP2_VERTEX_4);
 504                TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
 505                TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals, GL_RESCALE_NORMAL_EXT);
 506                TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth, GL_POINT_SMOOTH);
 507                TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint, GL_POLYGON_OFFSET_POINT);
 508                TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine, GL_POLYGON_OFFSET_LINE);
 509                TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill, GL_POLYGON_OFFSET_FILL);
 510                TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth, GL_POLYGON_SMOOTH);
 511                TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple, GL_POLYGON_STIPPLE);
 512                TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
 513                TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
 514                if (ctx->Texture.Enabled != enable->Texture) {
 515                   ctx->Texture.Enabled = enable->Texture;
 516                   if (ctx->Driver.Enable) {
 517                      if (ctx->Driver.ActiveTexture)
 518                         (*ctx->Driver.ActiveTexture)( ctx, 0 );
 519                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D, (GLboolean) (enable->Texture & TEXTURE0_1D) );
 520                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D, (GLboolean) (enable->Texture & TEXTURE0_2D) );
 521                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D, (GLboolean) (enable->Texture & TEXTURE0_3D) );
 522                      if (ctx->Driver.ActiveTexture)
 523                         (*ctx->Driver.ActiveTexture)( ctx, 1 );
 524                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D, (GLboolean) (enable->Texture & TEXTURE1_1D) );
 525                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D, (GLboolean) (enable->Texture & TEXTURE1_2D) );
 526                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D, (GLboolean) (enable->Texture & TEXTURE1_3D) );
 527                      if (ctx->Driver.ActiveTexture)
 528                         (*ctx->Driver.ActiveTexture)( ctx, ctx->Texture.CurrentUnit );
 529                   }
 530                }
 531 #undef TEST_AND_UPDATE
 532                {
 533                   GLuint i;
 534                   for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 535                      if (ctx->Texture.Unit[i].TexGenEnabled != enable->TexGen[i]) {
 536                         ctx->Texture.Unit[i].TexGenEnabled = enable->TexGen[i];
 537
 538                         /* ctx->Enabled recalculated in state change
 539                            processing */
 540
 541                         if (ctx->Driver.Enable) {
 542                            if (ctx->Driver.ActiveTexture)
 543                               (*ctx->Driver.ActiveTexture)( ctx, i );
 544                            if (enable->TexGen[i] & S_BIT)
 545                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_TRUE);
 546                            else
 547                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_FALSE);
 548                            if (enable->TexGen[i] & T_BIT)
 549                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_TRUE);
 550                            else
 551                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_FALSE);
 552                            if (enable->TexGen[i] & R_BIT)
 553                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_TRUE);
 554                            else
 555                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_FALSE);
 556                            if (enable->TexGen[i] & Q_BIT)
 557                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
 558                            else
 559                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
 560                         }
 561                      }
 562                   }
 563                   if (ctx->Driver.ActiveTexture)
 564                      (*ctx->Driver.ActiveTexture)( ctx, ctx->Texture.CurrentUnit );
 565                }
 566             }
 567             break;
 568          case GL_EVAL_BIT:
 569             MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
 570             break;
 571          case GL_FOG_BIT:
 572             {
 573                GLboolean anyChange = (GLboolean) (memcmp( &ctx->Fog, attr->data, sizeof(struct gl_fog_attrib) ) != 0);
 574                MEMCPY( &ctx->Fog, attr->data, sizeof(struct gl_fog_attrib) );
 575                if (anyChange && ctx->Driver.Fogfv) {
 576                   const GLfloat mode = (GLfloat) ctx->Fog.Mode;
 577                   const GLfloat density = ctx->Fog.Density;
 578                   const GLfloat start = ctx->Fog.Start;
 579                   const GLfloat end = ctx->Fog.End;
 580                   const GLfloat index = ctx->Fog.Index;
 581                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_MODE, &mode);
 582                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_DENSITY, &density );
 583                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_START, &start );
 584                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_END, &end );
 585                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_INDEX, &index );
 586                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_COLOR, ctx->Fog.Color );
 587                }
 588                ctx->Enabled &= ENABLE_FOG;
 589                if (ctx->Fog.Enabled) ctx->Enabled |= ENABLE_FOG;
 590             }
 591             break;
 592          case GL_HINT_BIT:
 593             MEMCPY( &ctx->Hint, attr->data, sizeof(struct gl_hint_attrib) );
 594             if (ctx->Driver.Hint) {
 595                (*ctx->Driver.Hint)( ctx, GL_PERSPECTIVE_CORRECTION_HINT,
 596                                     ctx->Hint.PerspectiveCorrection );
 597                (*ctx->Driver.Hint)( ctx, GL_POINT_SMOOTH_HINT,
 598                                     ctx->Hint.PointSmooth);
 599                (*ctx->Driver.Hint)( ctx, GL_LINE_SMOOTH_HINT,
 600                                     ctx->Hint.LineSmooth );
 601                (*ctx->Driver.Hint)( ctx, GL_POLYGON_SMOOTH_HINT,
 602                                     ctx->Hint.PolygonSmooth );
 603                (*ctx->Driver.Hint)( ctx, GL_FOG_HINT, ctx->Hint.Fog );
 604             }
 605             break;
 606          case GL_LIGHTING_BIT:
 607             MEMCPY( &ctx->Light, attr->data, sizeof(struct gl_light_attrib) );
 608             if (ctx->Driver.Enable) {
 609                GLuint i;
 610                for (i = 0; i < MAX_LIGHTS; i++) {
 611                   GLenum light = (GLenum) (GL_LIGHT0 + i);
 612                   (*ctx->Driver.Enable)( ctx, light, ctx->Light.Light[i].Enabled );
 613                }
 614                (*ctx->Driver.Enable)( ctx, GL_LIGHTING, ctx->Light.Enabled );
 615             }
 616             ctx->Enabled &= ENABLE_LIGHT;
 617             if (ctx->Light.Enabled && !is_empty_list(&ctx->Light.EnabledList))
 618                ctx->Enabled |= ENABLE_LIGHT;
 619             break;
 620          case GL_LINE_BIT:
 621             MEMCPY( &ctx->Line, attr->data, sizeof(struct gl_line_attrib) );
 622             if (ctx->Driver.Enable) {
 623                (*ctx->Driver.Enable)( ctx, GL_LINE_SMOOTH, ctx->Line.SmoothFlag );
 624                (*ctx->Driver.Enable)( ctx, GL_LINE_STIPPLE, ctx->Line.StippleFlag );
 625             }
 626             break;
 627          case GL_LIST_BIT:
 628             MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
 629             break;
 630          case GL_PIXEL_MODE_BIT:
 631             MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
 632             break;
 633          case GL_POINT_BIT:
 634             MEMCPY( &ctx->Point, attr->data, sizeof(struct gl_point_attrib) );
 635             if (ctx->Driver.Enable)
 636                (*ctx->Driver.Enable)( ctx, GL_POINT_SMOOTH, ctx->Point.SmoothFlag );
 637             break;
 638          case GL_POLYGON_BIT:
 639             {
 640                GLenum oldFrontMode = ctx->Polygon.FrontMode;
 641                GLenum oldBackMode = ctx->Polygon.BackMode;
 642                MEMCPY( &ctx->Polygon, attr->data,
 643                        sizeof(struct gl_polygon_attrib) );
 644                if ((ctx->Polygon.FrontMode != oldFrontMode ||
 645                     ctx->Polygon.BackMode != oldBackMode) &&
 646                    ctx->Driver.PolygonMode) {
 647                   (*ctx->Driver.PolygonMode)( ctx, GL_FRONT, ctx->Polygon.FrontMode);
 648                   (*ctx->Driver.PolygonMode)( ctx, GL_BACK, ctx->Polygon.BackMode);
 649                }
 650                if (ctx->Driver.CullFace)
 651                   ctx->Driver.CullFace( ctx, ctx->Polygon.CullFaceMode );
 652
 653                if (ctx->Driver.FrontFace)
 654                   ctx->Driver.FrontFace( ctx, ctx->Polygon.FrontFace );
 655
 656                if (ctx->Driver.Enable)
 657                   (*ctx->Driver.Enable)( ctx, GL_POLYGON_SMOOTH, ctx->Polygon.SmoothFlag );
 658             }
 659             break;
 660          case GL_POLYGON_STIPPLE_BIT:
 661             MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
 662             break;
 663          case GL_SCISSOR_BIT:
 664             MEMCPY( &ctx->Scissor, attr->data,
 665                     sizeof(struct gl_scissor_attrib) );
 666             if (ctx->Driver.Enable)
 667                (*ctx->Driver.Enable)( ctx, GL_SCISSOR_TEST, ctx->Scissor.Enabled );
 668             if (ctx->Driver.Scissor)
 669                ctx->Driver.Scissor( ctx, ctx->Scissor.X, ctx->Scissor.Y,
 670                                     ctx->Scissor.Width, ctx->Scissor.Height );
 671             break;
 672          case GL_STENCIL_BUFFER_BIT:
 673             MEMCPY( &ctx->Stencil, attr->data,
 674                     sizeof(struct gl_stencil_attrib) );
 675             if (ctx->Driver.StencilFunc)
 676                (*ctx->Driver.StencilFunc)( ctx, ctx->Stencil.Function,
 677                                    ctx->Stencil.Ref, ctx->Stencil.ValueMask);
 678             if (ctx->Driver.StencilMask)
 679                (*ctx->Driver.StencilMask)( ctx, ctx->Stencil.WriteMask );
 680             if (ctx->Driver.StencilOp)
 681                (*ctx->Driver.StencilOp)( ctx, ctx->Stencil.FailFunc,
 682                               ctx->Stencil.ZFailFunc, ctx->Stencil.ZPassFunc);
 683             if (ctx->Driver.ClearStencil)
 684                (*ctx->Driver.ClearStencil)( ctx, ctx->Stencil.Clear );
 685             if (ctx->Driver.Enable)
 686                (*ctx->Driver.Enable)( ctx, GL_STENCIL_TEST, ctx->Stencil.Enabled );
 687             ctx->TriangleCaps &= ~DD_STENCIL;
 688             if (ctx->Stencil.Enabled)
 689                ctx->TriangleCaps |= DD_STENCIL;
 690
 691             break;
 692          case GL_TRANSFORM_BIT:
 693             MEMCPY( &ctx->Transform, attr->data,
 694                     sizeof(struct gl_transform_attrib) );
 695             if (ctx->Driver.Enable) {
 696                (*ctx->Driver.Enable)( ctx, GL_NORMALIZE, ctx->Transform.Normalize );
 697                (*ctx->Driver.Enable)( ctx, GL_RESCALE_NORMAL_EXT, ctx->Transform.RescaleNormals );
 698             }
 699             ctx->Enabled &= ~(ENABLE_NORMALIZE|ENABLE_RESCALE);
 700             if (ctx->Transform.Normalize) ctx->Enabled |= ENABLE_NORMALIZE;
 701             if (ctx->Transform.RescaleNormals) ctx->Enabled |= ENABLE_RESCALE;
 702             break;
 703          case GL_TEXTURE_BIT:
 704             /* Take care of texture object reference counters */
 705             {
 706                GLuint u;
 707                for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 708                   ctx->Texture.Unit[u].CurrentD[1]->RefCount--;
 709                   ctx->Texture.Unit[u].CurrentD[2]->RefCount--;
 710                   ctx->Texture.Unit[u].CurrentD[3]->RefCount--;
 711                }
 712                MEMCPY( &ctx->Texture, attr->data,
 713                        sizeof(struct gl_texture_attrib) );
 714                /* restore state of the currently bound texture objects */
 715                for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 716                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[1],
 717                                      &(ctx->Texture.Unit[u].Saved1D) );
 718                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[2],
 719                                      &(ctx->Texture.Unit[u].Saved2D) );
 720                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[3],
 721                                      &(ctx->Texture.Unit[u].Saved3D) );
 722                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[1] );
 723                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[2] );
 724                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[3] );
 725
 726                }
 727             }
 728             break;
 729          case GL_VIEWPORT_BIT:
 730          {
 731             struct gl_viewport_attrib *v =
 732                (struct gl_viewport_attrib *)attr->data;
 733
 734             _mesa_Viewport( v->X, v->Y, v->Width, v->Height );
 735             _mesa_DepthRange( v->Near, v->Far );
 736             break;
 737          }
 738          default:
 739             gl_problem( ctx, "Bad attrib flag in PopAttrib");
 740             break;
 741       }
 742
 743       next = attr->next;
 744       FREE( attr->data );
 745       FREE( attr );
 746       attr = next;
 747    }
 748
 749    ctx->NewState = NEW_ALL;
 750 }
 751
 752
 753 #define GL_CLIENT_PACK_BIT (1<<20)
 754 #define GL_CLIENT_UNPACK_BIT (1<<21)
 755
 756
 757 void gl_PushClientAttrib( GLcontext *ctx, GLbitfield mask )
 758 {
 759    struct gl_attrib_node *newnode;
 760    struct gl_attrib_node *head;
 761
 762    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPushClientAttrib");
 763
 764    if (ctx->ClientAttribStackDepth>=MAX_CLIENT_ATTRIB_STACK_DEPTH) {
 765       gl_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
 766       return;
 767    }
 768
 769    /* Build linked list of attribute nodes which save all attribute */
 770    /* groups specified by the mask. */
 771    head = NULL;
 772
 773    if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
 774       struct gl_pixelstore_attrib *attr;
 775       /* packing attribs */
 776       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
 777       MEMCPY( attr, &ctx->Pack, sizeof(struct gl_pixelstore_attrib) );
 778       newnode = new_attrib_node( GL_CLIENT_PACK_BIT );
 779       newnode->data = attr;
 780       newnode->next = head;
 781       head = newnode;
 782       /* unpacking attribs */
 783       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
 784       MEMCPY( attr, &ctx->Unpack, sizeof(struct gl_pixelstore_attrib) );
 785       newnode = new_attrib_node( GL_CLIENT_UNPACK_BIT );
 786       newnode->data = attr;
 787       newnode->next = head;
 788       head = newnode;
 789    }
 790    if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
 791       struct gl_array_attrib *attr;
 792       attr = MALLOC_STRUCT( gl_array_attrib );
 793       MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
 794       newnode = new_attrib_node( GL_CLIENT_VERTEX_ARRAY_BIT );
 795       newnode->data = attr;
 796       newnode->next = head;
 797       head = newnode;
 798    }
 799
 800    ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
 801    ctx->ClientAttribStackDepth++;
 802 }
 803
 804
 805
 806
 807 void gl_PopClientAttrib( GLcontext *ctx )
 808 {
 809    struct gl_attrib_node *attr, *next;
 810
 811    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPopClientAttrib");
 812
 813    if (ctx->ClientAttribStackDepth==0) {
 814       gl_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
 815       return;
 816    }
 817
 818    ctx->ClientAttribStackDepth--;
 819    attr = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
 820
 821    while (attr) {
 822       switch (attr->kind) {
 823          case GL_CLIENT_PACK_BIT:
 824             MEMCPY( &ctx->Pack, attr->data,
 825                     sizeof(struct gl_pixelstore_attrib) );
 826             break;
 827          case GL_CLIENT_UNPACK_BIT:
 828             MEMCPY( &ctx->Unpack, attr->data,
 829                     sizeof(struct gl_pixelstore_attrib) );
 830             break;
 831          case GL_CLIENT_VERTEX_ARRAY_BIT:
 832             MEMCPY( &ctx->Array, attr->data,
 833                     sizeof(struct gl_array_attrib) );
 834             break;
 835          default:
 836             gl_problem( ctx, "Bad attrib flag in PopClientAttrib");
 837             break;
 838       }
 839
 840       next = attr->next;
 841       FREE( attr->data );
 842       FREE( attr );
 843       attr = next;
 844    }
 845
 846    ctx->NewState = NEW_ALL;
 847 }
 848
 849
 850
 851 void
 852 _mesa_PushAttrib( GLbitfield mask )
 853 {
 854    GET_CURRENT_CONTEXT(ctx);
 855    gl_PushAttrib(ctx, mask);
 856 }
 857
 858
 859 void
 860 _mesa_PopAttrib( void )
 861 {
 862    GET_CURRENT_CONTEXT(ctx);
 863    gl_PopAttrib(ctx);
 864 }
 865
 866
 867 void
 868 _mesa_PushClientAttrib( GLbitfield mask )
 869 {
 870    GET_CURRENT_CONTEXT(ctx);
 871    gl_PushClientAttrib(ctx, mask);
 872 }
 873
 874
 875 void
 876 _mesa_PopClientAttrib( void )
 877 {
 878    GET_CURRENT_CONTEXT(ctx);
 879    gl_PopClientAttrib(ctx);
 880 }
 881
 882