src/mesa/main/attrib.c

   1 /* $Id: attrib.c,v 1.5 1999/10/08 09:27:10 keithw 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
  29
  30
  31 #ifdef PC_HEADER
  32 #include "all.h"
  33 #else
  34 #ifndef XFree86Server
  35 #include <stdlib.h>
  36 #include <stdio.h>
  37 #include <string.h>
  38 #else
  39 #include "GL/xf86glx.h"
  40 #endif
  41 #include "attrib.h"
  42 #include "context.h"
  43 #include "glmisc.h"
  44 #include "enable.h"
  45 #include "enums.h"
  46 #include "macros.h"
  47 #include "simple_list.h"
  48 #include "texstate.h"
  49 #include "types.h"
  50 #ifdef XFree86Server
  51 #undef MISC_H
  52 #include "GL/xf86glx.h"
  53 #endif
  54 #endif
  55
  56
  57 #define MALLOC_STRUCT(T)  (struct T *) malloc( sizeof(struct T) )
  58
  59
  60
  61 /*
  62  * Allocate a new attribute state node.  These nodes have a
  63  * "kind" value and a pointer to a struct of state data.
  64  */
  65 static struct gl_attrib_node *new_attrib_node( GLbitfield kind )
  66 {
  67    struct gl_attrib_node *an;
  68
  69    an = (struct gl_attrib_node *) malloc( sizeof(struct gl_attrib_node) );
  70    if (an) {
  71       an->kind = kind;
  72    }
  73    return an;
  74 }
  75
  76
  77
  78 /*
  79  * Copy texture object state from one texture object to another.
  80  */
  81 static void copy_texobj_state( struct gl_texture_object *dest,
  82                                const struct gl_texture_object *src )
  83 {
  84    /*
  85    dest->Name = src->Name;
  86    dest->Dimensions = src->Dimensions;
  87    */
  88    dest->Priority = src->Priority;
  89    dest->BorderColor[0] = src->BorderColor[0];
  90    dest->BorderColor[1] = src->BorderColor[1];
  91    dest->BorderColor[2] = src->BorderColor[2];
  92    dest->BorderColor[3] = src->BorderColor[3];
  93    dest->WrapS = src->WrapS;
  94    dest->WrapT = src->WrapT;
  95    dest->WrapR = src->WrapR;
  96    dest->MinFilter = src->MinFilter;
  97    dest->MagFilter = src->MagFilter;
  98    dest->MinLod = src->MinLod;
  99    dest->MaxLod = src->MaxLod;
 100    dest->BaseLevel = src->BaseLevel;
 101    dest->MaxLevel = src->MaxLevel;
 102    dest->P = src->P;
 103    dest->M = src->M;
 104    dest->MinMagThresh = src->MinMagThresh;
 105    memcpy( dest->Palette, src->Palette,
 106            sizeof(GLubyte) * MAX_TEXTURE_PALETTE_SIZE * 4 );
 107    dest->PaletteSize = src->PaletteSize;
 108    dest->PaletteIntFormat = src->PaletteIntFormat;
 109    dest->PaletteFormat = src->PaletteFormat;
 110    dest->Complete = src->Complete;
 111    dest->SampleFunc = src->SampleFunc;
 112 }
 113
 114
 115
 116 void gl_PushAttrib( GLcontext* ctx, GLbitfield mask )
 117 {
 118    struct gl_attrib_node *newnode;
 119    struct gl_attrib_node *head;
 120
 121    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPushAttrib");
 122
 123    if (MESA_VERBOSE&VERBOSE_API)
 124       fprintf(stderr, "glPushAttrib %x\n", mask);
 125
 126    if (ctx->AttribStackDepth>=MAX_ATTRIB_STACK_DEPTH) {
 127       gl_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
 128       return;
 129    }
 130
 131    /* Build linked list of attribute nodes which save all attribute */
 132    /* groups specified by the mask. */
 133    head = NULL;
 134
 135    if (mask & GL_ACCUM_BUFFER_BIT) {
 136       struct gl_accum_attrib *attr;
 137       attr = MALLOC_STRUCT( gl_accum_attrib );
 138       MEMCPY( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );
 139       newnode = new_attrib_node( GL_ACCUM_BUFFER_BIT );
 140       newnode->data = attr;
 141       newnode->next = head;
 142       head = newnode;
 143    }
 144
 145    if (mask & GL_COLOR_BUFFER_BIT) {
 146       struct gl_colorbuffer_attrib *attr;
 147       attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
 148       MEMCPY( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
 149       newnode = new_attrib_node( GL_COLOR_BUFFER_BIT );
 150       newnode->data = attr;
 151       newnode->next = head;
 152       head = newnode;
 153    }
 154
 155    if (mask & GL_CURRENT_BIT) {
 156       struct gl_current_attrib *attr;
 157       attr = MALLOC_STRUCT( gl_current_attrib );
 158       MEMCPY( attr, &ctx->Current, sizeof(struct gl_current_attrib) );
 159       newnode = new_attrib_node( GL_CURRENT_BIT );
 160       newnode->data = attr;
 161       newnode->next = head;
 162       head = newnode;
 163    }
 164
 165    if (mask & GL_DEPTH_BUFFER_BIT) {
 166       struct gl_depthbuffer_attrib *attr;
 167       attr = MALLOC_STRUCT( gl_depthbuffer_attrib );
 168       MEMCPY( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );
 169       newnode = new_attrib_node( GL_DEPTH_BUFFER_BIT );
 170       newnode->data = attr;
 171       newnode->next = head;
 172       head = newnode;
 173    }
 174
 175    if (mask & GL_ENABLE_BIT) {
 176       struct gl_enable_attrib *attr;
 177       GLuint i;
 178       attr = MALLOC_STRUCT( gl_enable_attrib );
 179       /* Copy enable flags from all other attributes into the enable struct. */
 180       attr->AlphaTest = ctx->Color.AlphaEnabled;
 181       attr->AutoNormal = ctx->Eval.AutoNormal;
 182       attr->Blend = ctx->Color.BlendEnabled;
 183       for (i=0;i<MAX_CLIP_PLANES;i++) {
 184          attr->ClipPlane[i] = ctx->Transform.ClipEnabled[i];
 185       }
 186       attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;
 187       attr->CullFace = ctx->Polygon.CullFlag;
 188       attr->DepthTest = ctx->Depth.Test;
 189       attr->Dither = ctx->Color.DitherFlag;
 190       attr->Fog = ctx->Fog.Enabled;
 191       for (i=0;i<MAX_LIGHTS;i++) {
 192          attr->Light[i] = ctx->Light.Light[i].Enabled;
 193       }
 194       attr->Lighting = ctx->Light.Enabled;
 195       attr->LineSmooth = ctx->Line.SmoothFlag;
 196       attr->LineStipple = ctx->Line.StippleFlag;
 197       attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
 198       attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
 199       attr->Map1Color4 = ctx->Eval.Map1Color4;
 200       attr->Map1Index = ctx->Eval.Map1Index;
 201       attr->Map1Normal = ctx->Eval.Map1Normal;
 202       attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
 203       attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
 204       attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
 205       attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
 206       attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
 207       attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
 208       attr->Map2Color4 = ctx->Eval.Map2Color4;
 209       attr->Map2Index = ctx->Eval.Map2Index;
 210       attr->Map2Normal = ctx->Eval.Map2Normal;
 211       attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
 212       attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
 213       attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
 214       attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
 215       attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
 216       attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
 217       attr->Normalize = ctx->Transform.Normalize;
 218       attr->PointSmooth = ctx->Point.SmoothFlag;
 219       attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;
 220       attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;
 221       attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;
 222       attr->PolygonSmooth = ctx->Polygon.SmoothFlag;
 223       attr->PolygonStipple = ctx->Polygon.StippleFlag;
 224       attr->RescaleNormals = ctx->Transform.RescaleNormals;
 225       attr->Scissor = ctx->Scissor.Enabled;
 226       attr->Stencil = ctx->Stencil.Enabled;
 227       attr->Texture = ctx->Texture.Enabled;
 228       for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 229          attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
 230       }
 231       newnode = new_attrib_node( GL_ENABLE_BIT );
 232       newnode->data = attr;
 233       newnode->next = head;
 234       head = newnode;
 235    }
 236
 237    if (mask & GL_EVAL_BIT) {
 238       struct gl_eval_attrib *attr;
 239       attr = MALLOC_STRUCT( gl_eval_attrib );
 240       MEMCPY( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
 241       newnode = new_attrib_node( GL_EVAL_BIT );
 242       newnode->data = attr;
 243       newnode->next = head;
 244       head = newnode;
 245    }
 246
 247    if (mask & GL_FOG_BIT) {
 248       struct gl_fog_attrib *attr;
 249       attr = MALLOC_STRUCT( gl_fog_attrib );
 250       MEMCPY( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
 251       newnode = new_attrib_node( GL_FOG_BIT );
 252       newnode->data = attr;
 253       newnode->next = head;
 254       head = newnode;
 255    }
 256
 257    if (mask & GL_HINT_BIT) {
 258       struct gl_hint_attrib *attr;
 259       attr = MALLOC_STRUCT( gl_hint_attrib );
 260       MEMCPY( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
 261       newnode = new_attrib_node( GL_HINT_BIT );
 262       newnode->data = attr;
 263       newnode->next = head;
 264       head = newnode;
 265    }
 266
 267    if (mask & GL_LIGHTING_BIT) {
 268       struct gl_light_attrib *attr;
 269       attr = MALLOC_STRUCT( gl_light_attrib );
 270       MEMCPY( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
 271       newnode = new_attrib_node( GL_LIGHTING_BIT );
 272       newnode->data = attr;
 273       newnode->next = head;
 274       head = newnode;
 275    }
 276
 277    if (mask & GL_LINE_BIT) {
 278       struct gl_line_attrib *attr;
 279       attr = MALLOC_STRUCT( gl_line_attrib );
 280       MEMCPY( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
 281       newnode = new_attrib_node( GL_LINE_BIT );
 282       newnode->data = attr;
 283       newnode->next = head;
 284       head = newnode;
 285    }
 286
 287    if (mask & GL_LIST_BIT) {
 288       struct gl_list_attrib *attr;
 289       attr = MALLOC_STRUCT( gl_list_attrib );
 290       MEMCPY( attr, &ctx->List, sizeof(struct gl_list_attrib) );
 291       newnode = new_attrib_node( GL_LIST_BIT );
 292       newnode->data = attr;
 293       newnode->next = head;
 294       head = newnode;
 295    }
 296
 297    if (mask & GL_PIXEL_MODE_BIT) {
 298       struct gl_pixel_attrib *attr;
 299       attr = MALLOC_STRUCT( gl_pixel_attrib );
 300       MEMCPY( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
 301       newnode = new_attrib_node( GL_PIXEL_MODE_BIT );
 302       newnode->data = attr;
 303       newnode->next = head;
 304       head = newnode;
 305    }
 306
 307    if (mask & GL_POINT_BIT) {
 308       struct gl_point_attrib *attr;
 309       attr = MALLOC_STRUCT( gl_point_attrib );
 310       MEMCPY( attr, &ctx->Point, sizeof(struct gl_point_attrib) );
 311       newnode = new_attrib_node( GL_POINT_BIT );
 312       newnode->data = attr;
 313       newnode->next = head;
 314       head = newnode;
 315    }
 316
 317    if (mask & GL_POLYGON_BIT) {
 318       struct gl_polygon_attrib *attr;
 319       attr = MALLOC_STRUCT( gl_polygon_attrib );
 320       MEMCPY( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );
 321       newnode = new_attrib_node( GL_POLYGON_BIT );
 322       newnode->data = attr;
 323       newnode->next = head;
 324       head = newnode;
 325    }
 326
 327    if (mask & GL_POLYGON_STIPPLE_BIT) {
 328       GLuint *stipple;
 329       stipple = (GLuint *) malloc( 32*sizeof(GLuint) );
 330       MEMCPY( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );
 331       newnode = new_attrib_node( GL_POLYGON_STIPPLE_BIT );
 332       newnode->data = stipple;
 333       newnode->next = head;
 334       head = newnode;
 335    }
 336
 337    if (mask & GL_SCISSOR_BIT) {
 338       struct gl_scissor_attrib *attr;
 339       attr = MALLOC_STRUCT( gl_scissor_attrib );
 340       MEMCPY( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );
 341       newnode = new_attrib_node( GL_SCISSOR_BIT );
 342       newnode->data = attr;
 343       newnode->next = head;
 344       head = newnode;
 345    }
 346
 347    if (mask & GL_STENCIL_BUFFER_BIT) {
 348       struct gl_stencil_attrib *attr;
 349       attr = MALLOC_STRUCT( gl_stencil_attrib );
 350       MEMCPY( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );
 351       newnode = new_attrib_node( GL_STENCIL_BUFFER_BIT );
 352       newnode->data = attr;
 353       newnode->next = head;
 354       head = newnode;
 355    }
 356
 357    if (mask & GL_TEXTURE_BIT) {
 358       struct gl_texture_attrib *attr;
 359       GLuint u;
 360       /* Take care of texture object reference counters */
 361       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 362          ctx->Texture.Unit[u].CurrentD[1]->RefCount++;
 363          ctx->Texture.Unit[u].CurrentD[2]->RefCount++;
 364          ctx->Texture.Unit[u].CurrentD[3]->RefCount++;
 365       }
 366       attr = MALLOC_STRUCT( gl_texture_attrib );
 367       MEMCPY( attr, &ctx->Texture, sizeof(struct gl_texture_attrib) );
 368       /* copy state of the currently bound texture objects */
 369       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 370          copy_texobj_state(&attr->Unit[u].Saved1D, attr->Unit[u].CurrentD[1]);
 371          copy_texobj_state(&attr->Unit[u].Saved2D, attr->Unit[u].CurrentD[2]);
 372          copy_texobj_state(&attr->Unit[u].Saved3D, attr->Unit[u].CurrentD[3]);
 373       }
 374       newnode = new_attrib_node( GL_TEXTURE_BIT );
 375       newnode->data = attr;
 376       newnode->next = head;
 377       head = newnode;
 378    }
 379
 380    if (mask & GL_TRANSFORM_BIT) {
 381       struct gl_transform_attrib *attr;
 382       attr = MALLOC_STRUCT( gl_transform_attrib );
 383       MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
 384       newnode = new_attrib_node( GL_TRANSFORM_BIT );
 385       newnode->data = attr;
 386       newnode->next = head;
 387       head = newnode;
 388    }
 389
 390    if (mask & GL_VIEWPORT_BIT) {
 391       struct gl_viewport_attrib *attr;
 392       attr = MALLOC_STRUCT( gl_viewport_attrib );
 393       MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
 394       newnode = new_attrib_node( GL_VIEWPORT_BIT );
 395       newnode->data = attr;
 396       newnode->next = head;
 397       head = newnode;
 398    }
 399
 400    ctx->AttribStack[ctx->AttribStackDepth] = head;
 401    ctx->AttribStackDepth++;
 402 }
 403
 404
 405
 406 /*
 407  * This function is kind of long just because we have to call a lot
 408  * of device driver functions to update device driver state.
 409  */
 410 void gl_PopAttrib( GLcontext* ctx )
 411 {
 412    struct gl_attrib_node *attr, *next;
 413
 414    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPopAttrib");
 415
 416
 417    if (ctx->AttribStackDepth==0) {
 418       gl_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
 419       return;
 420    }
 421
 422    ctx->AttribStackDepth--;
 423    attr = ctx->AttribStack[ctx->AttribStackDepth];
 424
 425    while (attr) {
 426
 427       if (MESA_VERBOSE&VERBOSE_API)
 428          fprintf(stderr, "glPopAttrib %s\n", gl_lookup_enum_by_nr(attr->kind));
 429
 430       switch (attr->kind) {
 431          case GL_ACCUM_BUFFER_BIT:
 432             MEMCPY( &ctx->Accum, attr->data, sizeof(struct gl_accum_attrib) );
 433             break;
 434          case GL_COLOR_BUFFER_BIT:
 435             {
 436                GLenum oldDrawBuffer = ctx->Color.DrawBuffer;
 437                GLenum oldAlphaFunc = ctx->Color.AlphaFunc;
 438                GLubyte oldAlphaRef = ctx->Color.AlphaRef;
 439                GLenum oldBlendSrc = ctx->Color.BlendSrcRGB;
 440                GLenum oldBlendDst = ctx->Color.BlendDstRGB;
 441                MEMCPY( &ctx->Color, attr->data,
 442                        sizeof(struct gl_colorbuffer_attrib) );
 443                if (ctx->Color.DrawBuffer != oldDrawBuffer) {
 444                   gl_DrawBuffer(ctx, ctx->Color.DrawBuffer);
 445                }
 446                if ((ctx->Color.AlphaFunc != oldAlphaFunc ||
 447                     ctx->Color.AlphaRef != oldAlphaRef) &&
 448                    ctx->Driver.AlphaFunc)
 449                   (*ctx->Driver.AlphaFunc)( ctx, ctx->Color.AlphaFunc,
 450                                             ctx->Color.AlphaRef / 255.0F);
 451                if ((ctx->Color.BlendSrcRGB != oldBlendSrc ||
 452                     ctx->Color.BlendSrcRGB != oldBlendDst) &&
 453                    ctx->Driver.BlendFunc)
 454                   (*ctx->Driver.BlendFunc)( ctx, ctx->Color.BlendSrcRGB,
 455                                             ctx->Color.BlendDstRGB);
 456             }
 457             break;
 458          case GL_CURRENT_BIT:
 459             MEMCPY( &ctx->Current, attr->data,
 460                     sizeof(struct gl_current_attrib) );
 461             break;
 462          case GL_DEPTH_BUFFER_BIT:
 463             {
 464                GLenum oldDepthFunc = ctx->Depth.Func;
 465                GLboolean oldDepthMask = ctx->Depth.Mask;
 466                GLfloat oldDepthClear = ctx->Depth.Clear;
 467                MEMCPY( &ctx->Depth, attr->data,
 468                        sizeof(struct gl_depthbuffer_attrib) );
 469                if (ctx->Depth.Func != oldDepthFunc && ctx->Driver.DepthFunc)
 470                   (*ctx->Driver.DepthFunc)( ctx, ctx->Depth.Func );
 471                if (ctx->Depth.Mask != oldDepthMask && ctx->Driver.DepthMask)
 472                   (*ctx->Driver.DepthMask)( ctx, ctx->Depth.Mask );
 473                if (ctx->Depth.Clear != oldDepthClear && ctx->Driver.ClearDepth)
 474                   (*ctx->Driver.ClearDepth)( ctx, ctx->Depth.Clear );
 475             }
 476             break;
 477          case GL_ENABLE_BIT:
 478             {
 479                const struct gl_enable_attrib *enable;
 480                enable = (const struct gl_enable_attrib *) attr->data;
 481
 482 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)          \
 483         if ((VALUE) != (NEWVALUE)) {                    \
 484            gl_set_enable( ctx, ENUM, (NEWVALUE) );      \
 485         }
 486
 487                TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
 488                TEST_AND_UPDATE(ctx->Transform.Normalize, enable->AutoNormal, GL_NORMALIZE);
 489                TEST_AND_UPDATE(ctx->Color.BlendEnabled, enable->Blend, GL_BLEND);
 490                {
 491                   GLuint i;
 492                   for (i=0;i<MAX_CLIP_PLANES;i++) {
 493                      if (ctx->Transform.ClipEnabled[i] != enable->ClipPlane[i])
 494                         gl_set_enable( ctx, (GLenum) (GL_CLIP_PLANE0 + i), enable->ClipPlane[i] );
 495                   }
 496                }
 497                TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial, GL_COLOR_MATERIAL);
 498                TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
 499                TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
 500                TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
 501                TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
 502                TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
 503                TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
 504                TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple, GL_LINE_STIPPLE);
 505                TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp, GL_INDEX_LOGIC_OP);
 506                TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp, GL_COLOR_LOGIC_OP);
 507                TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
 508                TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
 509                TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
 510                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1, GL_MAP1_TEXTURE_COORD_1);
 511                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2, GL_MAP1_TEXTURE_COORD_2);
 512                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3, GL_MAP1_TEXTURE_COORD_3);
 513                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4, GL_MAP1_TEXTURE_COORD_4);
 514                TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3, GL_MAP1_VERTEX_3);
 515                TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4, GL_MAP1_VERTEX_4);
 516                TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
 517                TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
 518                TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
 519                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1, GL_MAP2_TEXTURE_COORD_1);
 520                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2, GL_MAP2_TEXTURE_COORD_2);
 521                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3, GL_MAP2_TEXTURE_COORD_3);
 522                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4, GL_MAP2_TEXTURE_COORD_4);
 523                TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3, GL_MAP2_VERTEX_3);
 524                TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4, GL_MAP2_VERTEX_4);
 525                TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
 526                TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals, GL_RESCALE_NORMAL_EXT);
 527                TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth, GL_POINT_SMOOTH);
 528                TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint, GL_POLYGON_OFFSET_POINT);
 529                TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine, GL_POLYGON_OFFSET_LINE);
 530                TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill, GL_POLYGON_OFFSET_FILL);
 531                TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth, GL_POLYGON_SMOOTH);
 532                TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple, GL_POLYGON_STIPPLE);
 533                TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
 534                TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
 535                if (ctx->Texture.Enabled != enable->Texture) {
 536                   ctx->Texture.Enabled = enable->Texture;
 537                   if (ctx->Driver.Enable) {
 538                      if (ctx->Driver.ActiveTexture)
 539                         (*ctx->Driver.ActiveTexture)( ctx, 0 );
 540                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D, (GLboolean) (enable->Texture & TEXTURE0_1D) );
 541                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D, (GLboolean) (enable->Texture & TEXTURE0_2D) );
 542                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D, (GLboolean) (enable->Texture & TEXTURE0_3D) );
 543                      if (ctx->Driver.ActiveTexture)
 544                         (*ctx->Driver.ActiveTexture)( ctx, 1 );
 545                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D, (GLboolean) (enable->Texture & TEXTURE1_1D) );
 546                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D, (GLboolean) (enable->Texture & TEXTURE1_2D) );
 547                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D, (GLboolean) (enable->Texture & TEXTURE1_3D) );
 548                      if (ctx->Driver.ActiveTexture)
 549                         (*ctx->Driver.ActiveTexture)( ctx, ctx->Texture.CurrentUnit );
 550                   }
 551                }
 552 #undef TEST_AND_UPDATE
 553                {
 554                   GLuint i;
 555                   for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 556                      if (ctx->Texture.Unit[i].TexGenEnabled != enable->TexGen[i]) {
 557                         ctx->Texture.Unit[i].TexGenEnabled = enable->TexGen[i];
 558
 559                         /* ctx->Enabled recalculated in state change
 560                            processing */
 561
 562                         if (ctx->Driver.Enable) {
 563                            if (ctx->Driver.ActiveTexture)
 564                               (*ctx->Driver.ActiveTexture)( ctx, i );
 565                            if (enable->TexGen[i] & S_BIT)
 566                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_TRUE);
 567                            else
 568                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_FALSE);
 569                            if (enable->TexGen[i] & T_BIT)
 570                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_TRUE);
 571                            else
 572                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_FALSE);
 573                            if (enable->TexGen[i] & R_BIT)
 574                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_TRUE);
 575                            else
 576                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_FALSE);
 577                            if (enable->TexGen[i] & Q_BIT)
 578                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
 579                            else
 580                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
 581                         }
 582                      }
 583                   }
 584                   if (ctx->Driver.ActiveTexture)
 585                      (*ctx->Driver.ActiveTexture)( ctx, ctx->Texture.CurrentUnit );
 586                }
 587             }
 588             break;
 589          case GL_EVAL_BIT:
 590             MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
 591             break;
 592          case GL_FOG_BIT:
 593             {
 594                GLboolean anyChange = (memcmp( &ctx->Fog, attr->data, sizeof(struct gl_fog_attrib) ) != 0);
 595                MEMCPY( &ctx->Fog, attr->data, sizeof(struct gl_fog_attrib) );
 596                if (anyChange && ctx->Driver.Fogfv) {
 597                   const GLfloat mode = ctx->Fog.Mode;
 598                   const GLfloat density = ctx->Fog.Density;
 599                   const GLfloat start = ctx->Fog.Start;
 600                   const GLfloat end = ctx->Fog.End;
 601                   const GLfloat index = ctx->Fog.Index;
 602                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_MODE, &mode);
 603                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_DENSITY, &density );
 604                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_START, &start );
 605                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_END, &end );
 606                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_INDEX, &index );
 607                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_COLOR, ctx->Fog.Color );
 608                }
 609                ctx->Enabled &= ENABLE_FOG;
 610                if (ctx->Fog.Enabled) ctx->Enabled |= ENABLE_FOG;
 611             }
 612             break;
 613          case GL_HINT_BIT:
 614             MEMCPY( &ctx->Hint, attr->data, sizeof(struct gl_hint_attrib) );
 615             if (ctx->Driver.Hint) {
 616                (*ctx->Driver.Hint)( ctx, GL_PERSPECTIVE_CORRECTION_HINT,
 617                                     ctx->Hint.PerspectiveCorrection );
 618                (*ctx->Driver.Hint)( ctx, GL_POINT_SMOOTH_HINT,
 619                                     ctx->Hint.PointSmooth);
 620                (*ctx->Driver.Hint)( ctx, GL_LINE_SMOOTH_HINT,
 621                                     ctx->Hint.LineSmooth );
 622                (*ctx->Driver.Hint)( ctx, GL_POLYGON_SMOOTH_HINT,
 623                                     ctx->Hint.PolygonSmooth );
 624                (*ctx->Driver.Hint)( ctx, GL_FOG_HINT, ctx->Hint.Fog );
 625             }
 626             break;
 627          case GL_LIGHTING_BIT:
 628             MEMCPY( &ctx->Light, attr->data, sizeof(struct gl_light_attrib) );
 629             if (ctx->Driver.Enable) {
 630                GLuint i;
 631                for (i = 0; i < MAX_LIGHTS; i++) {
 632                   GLenum light = (GLenum) (GL_LIGHT0 + i);
 633                   (*ctx->Driver.Enable)( ctx, light, ctx->Light.Light[i].Enabled );
 634                }
 635                (*ctx->Driver.Enable)( ctx, GL_LIGHTING, ctx->Light.Enabled );
 636             }
 637             ctx->Enabled &= ENABLE_LIGHT;
 638             if (ctx->Light.Enabled && !is_empty_list(&ctx->Light.EnabledList))
 639                ctx->Enabled |= ENABLE_LIGHT;
 640             break;
 641          case GL_LINE_BIT:
 642             MEMCPY( &ctx->Line, attr->data, sizeof(struct gl_line_attrib) );
 643             if (ctx->Driver.Enable) {
 644                (*ctx->Driver.Enable)( ctx, GL_LINE_SMOOTH, ctx->Line.SmoothFlag );
 645                (*ctx->Driver.Enable)( ctx, GL_LINE_STIPPLE, ctx->Line.StippleFlag );
 646             }
 647             break;
 648          case GL_LIST_BIT:
 649             MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
 650             break;
 651          case GL_PIXEL_MODE_BIT:
 652             MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
 653             break;
 654          case GL_POINT_BIT:
 655             MEMCPY( &ctx->Point, attr->data, sizeof(struct gl_point_attrib) );
 656             if (ctx->Driver.Enable)
 657                (*ctx->Driver.Enable)( ctx, GL_POINT_SMOOTH, ctx->Point.SmoothFlag );
 658             break;
 659          case GL_POLYGON_BIT:
 660             {
 661                GLenum oldFrontMode = ctx->Polygon.FrontMode;
 662                GLenum oldBackMode = ctx->Polygon.BackMode;
 663                MEMCPY( &ctx->Polygon, attr->data,
 664                        sizeof(struct gl_polygon_attrib) );
 665                if ((ctx->Polygon.FrontMode != oldFrontMode ||
 666                     ctx->Polygon.BackMode != oldBackMode) &&
 667                    ctx->Driver.PolygonMode) {
 668                   (*ctx->Driver.PolygonMode)( ctx, GL_FRONT, ctx->Polygon.FrontMode);
 669                   (*ctx->Driver.PolygonMode)( ctx, GL_BACK, ctx->Polygon.BackMode);
 670                }
 671                if (ctx->Driver.CullFace)
 672                   ctx->Driver.CullFace( ctx, ctx->Polygon.CullFaceMode );
 673
 674                if (ctx->Driver.FrontFace)
 675                   ctx->Driver.FrontFace( ctx, ctx->Polygon.FrontFace );
 676
 677                if (ctx->Driver.Enable)
 678                   (*ctx->Driver.Enable)( ctx, GL_POLYGON_SMOOTH, ctx->Polygon.SmoothFlag );
 679             }
 680             break;
 681          case GL_POLYGON_STIPPLE_BIT:
 682             MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
 683             break;
 684          case GL_SCISSOR_BIT:
 685             MEMCPY( &ctx->Scissor, attr->data,
 686                     sizeof(struct gl_scissor_attrib) );
 687             if (ctx->Driver.Enable)
 688                (*ctx->Driver.Enable)( ctx, GL_SCISSOR_TEST, ctx->Scissor.Enabled );
 689             if (ctx->Driver.Scissor)
 690                ctx->Driver.Scissor( ctx, ctx->Scissor.X, ctx->Scissor.Y,
 691                                     ctx->Scissor.Width, ctx->Scissor.Height );
 692             break;
 693          case GL_STENCIL_BUFFER_BIT:
 694             MEMCPY( &ctx->Stencil, attr->data,
 695                     sizeof(struct gl_stencil_attrib) );
 696             if (ctx->Driver.StencilFunc)
 697                (*ctx->Driver.StencilFunc)( ctx, ctx->Stencil.Function,
 698                                    ctx->Stencil.Ref, ctx->Stencil.ValueMask);
 699             if (ctx->Driver.StencilMask)
 700                (*ctx->Driver.StencilMask)( ctx, ctx->Stencil.WriteMask );
 701             if (ctx->Driver.StencilOp)
 702                (*ctx->Driver.StencilOp)( ctx, ctx->Stencil.FailFunc,
 703                               ctx->Stencil.ZFailFunc, ctx->Stencil.ZPassFunc);
 704             if (ctx->Driver.ClearStencil)
 705                (*ctx->Driver.ClearStencil)( ctx, ctx->Stencil.Clear );
 706             if (ctx->Driver.Enable)
 707                (*ctx->Driver.Enable)( ctx, GL_STENCIL_TEST, ctx->Stencil.Enabled );
 708             ctx->TriangleCaps &= ~DD_STENCIL;
 709             if (ctx->Stencil.Enabled)
 710                ctx->TriangleCaps |= DD_STENCIL;
 711
 712             break;
 713          case GL_TRANSFORM_BIT:
 714             MEMCPY( &ctx->Transform, attr->data,
 715                     sizeof(struct gl_transform_attrib) );
 716             if (ctx->Driver.Enable) {
 717                (*ctx->Driver.Enable)( ctx, GL_NORMALIZE, ctx->Transform.Normalize );
 718                (*ctx->Driver.Enable)( ctx, GL_RESCALE_NORMAL_EXT, ctx->Transform.RescaleNormals );
 719             }
 720             ctx->Enabled &= ~(ENABLE_NORMALIZE|ENABLE_RESCALE);
 721             if (ctx->Transform.Normalize) ctx->Enabled |= ENABLE_NORMALIZE;
 722             if (ctx->Transform.RescaleNormals) ctx->Enabled |= ENABLE_RESCALE;
 723             break;
 724          case GL_TEXTURE_BIT:
 725             /* Take care of texture object reference counters */
 726             {
 727                GLuint u;
 728                for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 729                   ctx->Texture.Unit[u].CurrentD[1]->RefCount--;
 730                   ctx->Texture.Unit[u].CurrentD[2]->RefCount--;
 731                   ctx->Texture.Unit[u].CurrentD[3]->RefCount--;
 732                }
 733                MEMCPY( &ctx->Texture, attr->data,
 734                        sizeof(struct gl_texture_attrib) );
 735                /* restore state of the currently bound texture objects */
 736                for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 737                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[1],
 738                                      &(ctx->Texture.Unit[u].Saved1D) );
 739                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[2],
 740                                      &(ctx->Texture.Unit[u].Saved2D) );
 741                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[3],
 742                                      &(ctx->Texture.Unit[u].Saved3D) );
 743                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[1] );
 744                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[2] );
 745                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[3] );
 746
 747                }
 748             }
 749             break;
 750          case GL_VIEWPORT_BIT:
 751          {
 752             struct gl_viewport_attrib *v =
 753                (struct gl_viewport_attrib *)attr->data;
 754
 755             gl_Viewport( ctx, v->X, v->Y, v->Width, v->Height );
 756             gl_DepthRange( ctx, v->Near, v->Far );
 757             break;
 758          }
 759          default:
 760             gl_problem( ctx, "Bad attrib flag in PopAttrib");
 761             break;
 762       }
 763
 764       next = attr->next;
 765       free( (void *) attr->data );
 766       free( (void *) attr );
 767       attr = next;
 768    }
 769
 770    ctx->NewState = NEW_ALL;
 771 }
 772
 773
 774 #define GL_CLIENT_PACK_BIT (1<<20)
 775 #define GL_CLIENT_UNPACK_BIT (1<<21)
 776
 777
 778 void gl_PushClientAttrib( GLcontext *ctx, GLbitfield mask )
 779 {
 780    struct gl_attrib_node *newnode;
 781    struct gl_attrib_node *head;
 782
 783    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPushClientAttrib");
 784
 785    if (ctx->ClientAttribStackDepth>=MAX_CLIENT_ATTRIB_STACK_DEPTH) {
 786       gl_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
 787       return;
 788    }
 789
 790    /* Build linked list of attribute nodes which save all attribute */
 791    /* groups specified by the mask. */
 792    head = NULL;
 793
 794    if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
 795       struct gl_pixelstore_attrib *attr;
 796       /* packing attribs */
 797       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
 798       MEMCPY( attr, &ctx->Pack, sizeof(struct gl_pixelstore_attrib) );
 799       newnode = new_attrib_node( GL_CLIENT_PACK_BIT );
 800       newnode->data = attr;
 801       newnode->next = head;
 802       head = newnode;
 803       /* unpacking attribs */
 804       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
 805       MEMCPY( attr, &ctx->Unpack, sizeof(struct gl_pixelstore_attrib) );
 806       newnode = new_attrib_node( GL_CLIENT_UNPACK_BIT );
 807       newnode->data = attr;
 808       newnode->next = head;
 809       head = newnode;
 810    }
 811    if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
 812       struct gl_array_attrib *attr;
 813       attr = MALLOC_STRUCT( gl_array_attrib );
 814       MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
 815       newnode = new_attrib_node( GL_CLIENT_VERTEX_ARRAY_BIT );
 816       newnode->data = attr;
 817       newnode->next = head;
 818       head = newnode;
 819    }
 820
 821    ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
 822    ctx->ClientAttribStackDepth++;
 823 }
 824
 825
 826
 827
 828 void gl_PopClientAttrib( GLcontext *ctx )
 829 {
 830    struct gl_attrib_node *attr, *next;
 831
 832    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPopClientAttrib");
 833
 834    if (ctx->ClientAttribStackDepth==0) {
 835       gl_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
 836       return;
 837    }
 838
 839    ctx->ClientAttribStackDepth--;
 840    attr = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
 841
 842    while (attr) {
 843       switch (attr->kind) {
 844          case GL_CLIENT_PACK_BIT:
 845             MEMCPY( &ctx->Pack, attr->data,
 846                     sizeof(struct gl_pixelstore_attrib) );
 847             break;
 848          case GL_CLIENT_UNPACK_BIT:
 849             MEMCPY( &ctx->Unpack, attr->data,
 850                     sizeof(struct gl_pixelstore_attrib) );
 851             break;
 852          case GL_CLIENT_VERTEX_ARRAY_BIT:
 853             MEMCPY( &ctx->Array, attr->data,
 854                     sizeof(struct gl_array_attrib) );
 855             break;
 856          default:
 857             gl_problem( ctx, "Bad attrib flag in PopClientAttrib");
 858             break;
 859       }
 860
 861       next = attr->next;
 862       free( (void *) attr->data );
 863       free( (void *) attr );
 864       attr = next;
 865    }
 866
 867    ctx->NewState = NEW_ALL;
 868 }
 869