src/mesa/main/attrib.c

   1 /* $Id: attrib.c,v 1.10 1999/11/08 15:28:08 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
  29 #include <stdlib.h>
  30
  31 #ifdef PC_HEADER
  32 #include "all.h"
  33 #else
  34 #ifndef XFree86Server
  35 #include <stdio.h>
  36 #else
  37 #include "GL/xf86glx.h"
  38 #endif
  39 #include "attrib.h"
  40 #include "context.h"
  41 #include "glmisc.h"
  42 #include "enable.h"
  43 #include "enums.h"
  44 #include "macros.h"
  45 #include "simple_list.h"
  46 #include "texstate.h"
  47 #include "types.h"
  48 #endif
  49
  50
  51
  52
  53 /*
  54  * Allocate a new attribute state node.  These nodes have a
  55  * "kind" value and a pointer to a struct of state data.
  56  */
  57 static struct gl_attrib_node *new_attrib_node( GLbitfield kind )
  58 {
  59    struct gl_attrib_node *an = MALLOC_STRUCT(gl_attrib_node);
  60    if (an) {
  61       an->kind = kind;
  62    }
  63    return an;
  64 }
  65
  66
  67
  68 /*
  69  * Copy texture object state from one texture object to another.
  70  */
  71 static void copy_texobj_state( struct gl_texture_object *dest,
  72                                const struct gl_texture_object *src )
  73 {
  74    /*
  75    dest->Name = src->Name;
  76    dest->Dimensions = src->Dimensions;
  77    */
  78    dest->Priority = src->Priority;
  79    dest->BorderColor[0] = src->BorderColor[0];
  80    dest->BorderColor[1] = src->BorderColor[1];
  81    dest->BorderColor[2] = src->BorderColor[2];
  82    dest->BorderColor[3] = src->BorderColor[3];
  83    dest->WrapS = src->WrapS;
  84    dest->WrapT = src->WrapT;
  85    dest->WrapR = src->WrapR;
  86    dest->MinFilter = src->MinFilter;
  87    dest->MagFilter = src->MagFilter;
  88    dest->MinLod = src->MinLod;
  89    dest->MaxLod = src->MaxLod;
  90    dest->BaseLevel = src->BaseLevel;
  91    dest->MaxLevel = src->MaxLevel;
  92    dest->P = src->P;
  93    dest->M = src->M;
  94    dest->MinMagThresh = src->MinMagThresh;
  95    memcpy( dest->Palette, src->Palette,
  96            sizeof(GLubyte) * MAX_TEXTURE_PALETTE_SIZE * 4 );
  97    dest->PaletteSize = src->PaletteSize;
  98    dest->PaletteIntFormat = src->PaletteIntFormat;
  99    dest->PaletteFormat = src->PaletteFormat;
 100    dest->Complete = src->Complete;
 101    dest->SampleFunc = src->SampleFunc;
 102 }
 103
 104
 105
 106 void gl_PushAttrib( GLcontext* ctx, GLbitfield mask )
 107 {
 108    struct gl_attrib_node *newnode;
 109    struct gl_attrib_node *head;
 110
 111    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPushAttrib");
 112
 113    if (MESA_VERBOSE&VERBOSE_API)
 114       fprintf(stderr, "glPushAttrib %x\n", mask);
 115
 116    if (ctx->AttribStackDepth>=MAX_ATTRIB_STACK_DEPTH) {
 117       gl_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
 118       return;
 119    }
 120
 121    /* Build linked list of attribute nodes which save all attribute */
 122    /* groups specified by the mask. */
 123    head = NULL;
 124
 125    if (mask & GL_ACCUM_BUFFER_BIT) {
 126       struct gl_accum_attrib *attr;
 127       attr = MALLOC_STRUCT( gl_accum_attrib );
 128       MEMCPY( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );
 129       newnode = new_attrib_node( GL_ACCUM_BUFFER_BIT );
 130       newnode->data = attr;
 131       newnode->next = head;
 132       head = newnode;
 133    }
 134
 135    if (mask & GL_COLOR_BUFFER_BIT) {
 136       struct gl_colorbuffer_attrib *attr;
 137       attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
 138       MEMCPY( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
 139       newnode = new_attrib_node( GL_COLOR_BUFFER_BIT );
 140       newnode->data = attr;
 141       newnode->next = head;
 142       head = newnode;
 143    }
 144
 145    if (mask & GL_CURRENT_BIT) {
 146       struct gl_current_attrib *attr;
 147       attr = MALLOC_STRUCT( gl_current_attrib );
 148       MEMCPY( attr, &ctx->Current, sizeof(struct gl_current_attrib) );
 149       newnode = new_attrib_node( GL_CURRENT_BIT );
 150       newnode->data = attr;
 151       newnode->next = head;
 152       head = newnode;
 153    }
 154
 155    if (mask & GL_DEPTH_BUFFER_BIT) {
 156       struct gl_depthbuffer_attrib *attr;
 157       attr = MALLOC_STRUCT( gl_depthbuffer_attrib );
 158       MEMCPY( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );
 159       newnode = new_attrib_node( GL_DEPTH_BUFFER_BIT );
 160       newnode->data = attr;
 161       newnode->next = head;
 162       head = newnode;
 163    }
 164
 165    if (mask & GL_ENABLE_BIT) {
 166       struct gl_enable_attrib *attr;
 167       GLuint i;
 168       attr = MALLOC_STRUCT( gl_enable_attrib );
 169       /* Copy enable flags from all other attributes into the enable struct. */
 170       attr->AlphaTest = ctx->Color.AlphaEnabled;
 171       attr->AutoNormal = ctx->Eval.AutoNormal;
 172       attr->Blend = ctx->Color.BlendEnabled;
 173       for (i=0;i<MAX_CLIP_PLANES;i++) {
 174          attr->ClipPlane[i] = ctx->Transform.ClipEnabled[i];
 175       }
 176       attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;
 177       attr->CullFace = ctx->Polygon.CullFlag;
 178       attr->DepthTest = ctx->Depth.Test;
 179       attr->Dither = ctx->Color.DitherFlag;
 180       attr->Fog = ctx->Fog.Enabled;
 181       for (i=0;i<MAX_LIGHTS;i++) {
 182          attr->Light[i] = ctx->Light.Light[i].Enabled;
 183       }
 184       attr->Lighting = ctx->Light.Enabled;
 185       attr->LineSmooth = ctx->Line.SmoothFlag;
 186       attr->LineStipple = ctx->Line.StippleFlag;
 187       attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
 188       attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
 189       attr->Map1Color4 = ctx->Eval.Map1Color4;
 190       attr->Map1Index = ctx->Eval.Map1Index;
 191       attr->Map1Normal = ctx->Eval.Map1Normal;
 192       attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
 193       attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
 194       attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
 195       attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
 196       attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
 197       attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
 198       attr->Map2Color4 = ctx->Eval.Map2Color4;
 199       attr->Map2Index = ctx->Eval.Map2Index;
 200       attr->Map2Normal = ctx->Eval.Map2Normal;
 201       attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
 202       attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
 203       attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
 204       attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
 205       attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
 206       attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
 207       attr->Normalize = ctx->Transform.Normalize;
 208       attr->PointSmooth = ctx->Point.SmoothFlag;
 209       attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;
 210       attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;
 211       attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;
 212       attr->PolygonSmooth = ctx->Polygon.SmoothFlag;
 213       attr->PolygonStipple = ctx->Polygon.StippleFlag;
 214       attr->RescaleNormals = ctx->Transform.RescaleNormals;
 215       attr->Scissor = ctx->Scissor.Enabled;
 216       attr->Stencil = ctx->Stencil.Enabled;
 217       attr->Texture = ctx->Texture.Enabled;
 218       for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 219          attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
 220       }
 221       newnode = new_attrib_node( GL_ENABLE_BIT );
 222       newnode->data = attr;
 223       newnode->next = head;
 224       head = newnode;
 225    }
 226
 227    if (mask & GL_EVAL_BIT) {
 228       struct gl_eval_attrib *attr;
 229       attr = MALLOC_STRUCT( gl_eval_attrib );
 230       MEMCPY( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
 231       newnode = new_attrib_node( GL_EVAL_BIT );
 232       newnode->data = attr;
 233       newnode->next = head;
 234       head = newnode;
 235    }
 236
 237    if (mask & GL_FOG_BIT) {
 238       struct gl_fog_attrib *attr;
 239       attr = MALLOC_STRUCT( gl_fog_attrib );
 240       MEMCPY( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
 241       newnode = new_attrib_node( GL_FOG_BIT );
 242       newnode->data = attr;
 243       newnode->next = head;
 244       head = newnode;
 245    }
 246
 247    if (mask & GL_HINT_BIT) {
 248       struct gl_hint_attrib *attr;
 249       attr = MALLOC_STRUCT( gl_hint_attrib );
 250       MEMCPY( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
 251       newnode = new_attrib_node( GL_HINT_BIT );
 252       newnode->data = attr;
 253       newnode->next = head;
 254       head = newnode;
 255    }
 256
 257    if (mask & GL_LIGHTING_BIT) {
 258       struct gl_light_attrib *attr;
 259       attr = MALLOC_STRUCT( gl_light_attrib );
 260       MEMCPY( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
 261       newnode = new_attrib_node( GL_LIGHTING_BIT );
 262       newnode->data = attr;
 263       newnode->next = head;
 264       head = newnode;
 265    }
 266
 267    if (mask & GL_LINE_BIT) {
 268       struct gl_line_attrib *attr;
 269       attr = MALLOC_STRUCT( gl_line_attrib );
 270       MEMCPY( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
 271       newnode = new_attrib_node( GL_LINE_BIT );
 272       newnode->data = attr;
 273       newnode->next = head;
 274       head = newnode;
 275    }
 276
 277    if (mask & GL_LIST_BIT) {
 278       struct gl_list_attrib *attr;
 279       attr = MALLOC_STRUCT( gl_list_attrib );
 280       MEMCPY( attr, &ctx->List, sizeof(struct gl_list_attrib) );
 281       newnode = new_attrib_node( GL_LIST_BIT );
 282       newnode->data = attr;
 283       newnode->next = head;
 284       head = newnode;
 285    }
 286
 287    if (mask & GL_PIXEL_MODE_BIT) {
 288       struct gl_pixel_attrib *attr;
 289       attr = MALLOC_STRUCT( gl_pixel_attrib );
 290       MEMCPY( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
 291       newnode = new_attrib_node( GL_PIXEL_MODE_BIT );
 292       newnode->data = attr;
 293       newnode->next = head;
 294       head = newnode;
 295    }
 296
 297    if (mask & GL_POINT_BIT) {
 298       struct gl_point_attrib *attr;
 299       attr = MALLOC_STRUCT( gl_point_attrib );
 300       MEMCPY( attr, &ctx->Point, sizeof(struct gl_point_attrib) );
 301       newnode = new_attrib_node( GL_POINT_BIT );
 302       newnode->data = attr;
 303       newnode->next = head;
 304       head = newnode;
 305    }
 306
 307    if (mask & GL_POLYGON_BIT) {
 308       struct gl_polygon_attrib *attr;
 309       attr = MALLOC_STRUCT( gl_polygon_attrib );
 310       MEMCPY( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );
 311       newnode = new_attrib_node( GL_POLYGON_BIT );
 312       newnode->data = attr;
 313       newnode->next = head;
 314       head = newnode;
 315    }
 316
 317    if (mask & GL_POLYGON_STIPPLE_BIT) {
 318       GLuint *stipple;
 319       stipple = (GLuint *) MALLOC( 32*sizeof(GLuint) );
 320       MEMCPY( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );
 321       newnode = new_attrib_node( GL_POLYGON_STIPPLE_BIT );
 322       newnode->data = stipple;
 323       newnode->next = head;
 324       head = newnode;
 325    }
 326
 327    if (mask & GL_SCISSOR_BIT) {
 328       struct gl_scissor_attrib *attr;
 329       attr = MALLOC_STRUCT( gl_scissor_attrib );
 330       MEMCPY( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );
 331       newnode = new_attrib_node( GL_SCISSOR_BIT );
 332       newnode->data = attr;
 333       newnode->next = head;
 334       head = newnode;
 335    }
 336
 337    if (mask & GL_STENCIL_BUFFER_BIT) {
 338       struct gl_stencil_attrib *attr;
 339       attr = MALLOC_STRUCT( gl_stencil_attrib );
 340       MEMCPY( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );
 341       newnode = new_attrib_node( GL_STENCIL_BUFFER_BIT );
 342       newnode->data = attr;
 343       newnode->next = head;
 344       head = newnode;
 345    }
 346
 347    if (mask & GL_TEXTURE_BIT) {
 348       struct gl_texture_attrib *attr;
 349       GLuint u;
 350       /* Take care of texture object reference counters */
 351       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 352          ctx->Texture.Unit[u].CurrentD[1]->RefCount++;
 353          ctx->Texture.Unit[u].CurrentD[2]->RefCount++;
 354          ctx->Texture.Unit[u].CurrentD[3]->RefCount++;
 355       }
 356       attr = MALLOC_STRUCT( gl_texture_attrib );
 357       MEMCPY( attr, &ctx->Texture, sizeof(struct gl_texture_attrib) );
 358       /* copy state of the currently bound texture objects */
 359       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 360          copy_texobj_state(&attr->Unit[u].Saved1D, attr->Unit[u].CurrentD[1]);
 361          copy_texobj_state(&attr->Unit[u].Saved2D, attr->Unit[u].CurrentD[2]);
 362          copy_texobj_state(&attr->Unit[u].Saved3D, attr->Unit[u].CurrentD[3]);
 363       }
 364       newnode = new_attrib_node( GL_TEXTURE_BIT );
 365       newnode->data = attr;
 366       newnode->next = head;
 367       head = newnode;
 368    }
 369
 370    if (mask & GL_TRANSFORM_BIT) {
 371       struct gl_transform_attrib *attr;
 372       attr = MALLOC_STRUCT( gl_transform_attrib );
 373       MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
 374       newnode = new_attrib_node( GL_TRANSFORM_BIT );
 375       newnode->data = attr;
 376       newnode->next = head;
 377       head = newnode;
 378    }
 379
 380    if (mask & GL_VIEWPORT_BIT) {
 381       struct gl_viewport_attrib *attr;
 382       attr = MALLOC_STRUCT( gl_viewport_attrib );
 383       MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
 384       newnode = new_attrib_node( GL_VIEWPORT_BIT );
 385       newnode->data = attr;
 386       newnode->next = head;
 387       head = newnode;
 388    }
 389
 390    ctx->AttribStack[ctx->AttribStackDepth] = head;
 391    ctx->AttribStackDepth++;
 392 }
 393
 394
 395
 396 /*
 397  * This function is kind of long just because we have to call a lot
 398  * of device driver functions to update device driver state.
 399  */
 400 void gl_PopAttrib( GLcontext* ctx )
 401 {
 402    struct gl_attrib_node *attr, *next;
 403
 404    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPopAttrib");
 405
 406
 407    if (ctx->AttribStackDepth==0) {
 408       gl_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
 409       return;
 410    }
 411
 412    ctx->AttribStackDepth--;
 413    attr = ctx->AttribStack[ctx->AttribStackDepth];
 414
 415    while (attr) {
 416
 417       if (MESA_VERBOSE&VERBOSE_API)
 418          fprintf(stderr, "glPopAttrib %s\n", gl_lookup_enum_by_nr(attr->kind));
 419
 420       switch (attr->kind) {
 421          case GL_ACCUM_BUFFER_BIT:
 422             MEMCPY( &ctx->Accum, attr->data, sizeof(struct gl_accum_attrib) );
 423             break;
 424          case GL_COLOR_BUFFER_BIT:
 425             {
 426                GLenum oldDrawBuffer = ctx->Color.DrawBuffer;
 427                GLenum oldAlphaFunc = ctx->Color.AlphaFunc;
 428                GLubyte oldAlphaRef = ctx->Color.AlphaRef;
 429                GLenum oldBlendSrc = ctx->Color.BlendSrcRGB;
 430                GLenum oldBlendDst = ctx->Color.BlendDstRGB;
 431                MEMCPY( &ctx->Color, attr->data,
 432                        sizeof(struct gl_colorbuffer_attrib) );
 433                if (ctx->Color.DrawBuffer != oldDrawBuffer) {
 434                   gl_DrawBuffer(ctx, ctx->Color.DrawBuffer);
 435                }
 436                if ((ctx->Color.AlphaFunc != oldAlphaFunc ||
 437                     ctx->Color.AlphaRef != oldAlphaRef) &&
 438                    ctx->Driver.AlphaFunc)
 439                   (*ctx->Driver.AlphaFunc)( ctx, ctx->Color.AlphaFunc,
 440                                             ctx->Color.AlphaRef / 255.0F);
 441                if ((ctx->Color.BlendSrcRGB != oldBlendSrc ||
 442                     ctx->Color.BlendSrcRGB != oldBlendDst) &&
 443                    ctx->Driver.BlendFunc)
 444                   (*ctx->Driver.BlendFunc)( ctx, ctx->Color.BlendSrcRGB,
 445                                             ctx->Color.BlendDstRGB);
 446             }
 447             break;
 448          case GL_CURRENT_BIT:
 449             MEMCPY( &ctx->Current, attr->data,
 450                     sizeof(struct gl_current_attrib) );
 451             break;
 452          case GL_DEPTH_BUFFER_BIT:
 453             {
 454                GLenum oldDepthFunc = ctx->Depth.Func;
 455                GLboolean oldDepthMask = ctx->Depth.Mask;
 456                GLfloat oldDepthClear = ctx->Depth.Clear;
 457                MEMCPY( &ctx->Depth, attr->data,
 458                        sizeof(struct gl_depthbuffer_attrib) );
 459                if (ctx->Depth.Func != oldDepthFunc && ctx->Driver.DepthFunc)
 460                   (*ctx->Driver.DepthFunc)( ctx, ctx->Depth.Func );
 461                if (ctx->Depth.Mask != oldDepthMask && ctx->Driver.DepthMask)
 462                   (*ctx->Driver.DepthMask)( ctx, ctx->Depth.Mask );
 463                if (ctx->Depth.Clear != oldDepthClear && ctx->Driver.ClearDepth)
 464                   (*ctx->Driver.ClearDepth)( ctx, ctx->Depth.Clear );
 465             }
 466             break;
 467          case GL_ENABLE_BIT:
 468             {
 469                const struct gl_enable_attrib *enable;
 470                enable = (const struct gl_enable_attrib *) attr->data;
 471
 472 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)          \
 473         if ((VALUE) != (NEWVALUE)) {                    \
 474            gl_set_enable( ctx, ENUM, (NEWVALUE) );      \
 475         }
 476
 477                TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
 478                TEST_AND_UPDATE(ctx->Transform.Normalize, enable->AutoNormal, GL_NORMALIZE);
 479                TEST_AND_UPDATE(ctx->Color.BlendEnabled, enable->Blend, GL_BLEND);
 480                {
 481                   GLuint i;
 482                   for (i=0;i<MAX_CLIP_PLANES;i++) {
 483                      if (ctx->Transform.ClipEnabled[i] != enable->ClipPlane[i])
 484                         gl_set_enable( ctx, (GLenum) (GL_CLIP_PLANE0 + i), enable->ClipPlane[i] );
 485                   }
 486                }
 487                TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial, GL_COLOR_MATERIAL);
 488                TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
 489                TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
 490                TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
 491                TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
 492                TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
 493                TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
 494                TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple, GL_LINE_STIPPLE);
 495                TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp, GL_INDEX_LOGIC_OP);
 496                TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp, GL_COLOR_LOGIC_OP);
 497                TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
 498                TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
 499                TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
 500                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1, GL_MAP1_TEXTURE_COORD_1);
 501                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2, GL_MAP1_TEXTURE_COORD_2);
 502                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3, GL_MAP1_TEXTURE_COORD_3);
 503                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4, GL_MAP1_TEXTURE_COORD_4);
 504                TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3, GL_MAP1_VERTEX_3);
 505                TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4, GL_MAP1_VERTEX_4);
 506                TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
 507                TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
 508                TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
 509                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1, GL_MAP2_TEXTURE_COORD_1);
 510                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2, GL_MAP2_TEXTURE_COORD_2);
 511                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3, GL_MAP2_TEXTURE_COORD_3);
 512                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4, GL_MAP2_TEXTURE_COORD_4);
 513                TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3, GL_MAP2_VERTEX_3);
 514                TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4, GL_MAP2_VERTEX_4);
 515                TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
 516                TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals, GL_RESCALE_NORMAL_EXT);
 517                TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth, GL_POINT_SMOOTH);
 518                TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint, GL_POLYGON_OFFSET_POINT);
 519                TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine, GL_POLYGON_OFFSET_LINE);
 520                TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill, GL_POLYGON_OFFSET_FILL);
 521                TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth, GL_POLYGON_SMOOTH);
 522                TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple, GL_POLYGON_STIPPLE);
 523                TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
 524                TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
 525                if (ctx->Texture.Enabled != enable->Texture) {
 526                   ctx->Texture.Enabled = enable->Texture;
 527                   if (ctx->Driver.Enable) {
 528                      if (ctx->Driver.ActiveTexture)
 529                         (*ctx->Driver.ActiveTexture)( ctx, 0 );
 530                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D, (GLboolean) (enable->Texture & TEXTURE0_1D) );
 531                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D, (GLboolean) (enable->Texture & TEXTURE0_2D) );
 532                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D, (GLboolean) (enable->Texture & TEXTURE0_3D) );
 533                      if (ctx->Driver.ActiveTexture)
 534                         (*ctx->Driver.ActiveTexture)( ctx, 1 );
 535                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D, (GLboolean) (enable->Texture & TEXTURE1_1D) );
 536                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D, (GLboolean) (enable->Texture & TEXTURE1_2D) );
 537                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D, (GLboolean) (enable->Texture & TEXTURE1_3D) );
 538                      if (ctx->Driver.ActiveTexture)
 539                         (*ctx->Driver.ActiveTexture)( ctx, ctx->Texture.CurrentUnit );
 540                   }
 541                }
 542 #undef TEST_AND_UPDATE
 543                {
 544                   GLuint i;
 545                   for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 546                      if (ctx->Texture.Unit[i].TexGenEnabled != enable->TexGen[i]) {
 547                         ctx->Texture.Unit[i].TexGenEnabled = enable->TexGen[i];
 548
 549                         /* ctx->Enabled recalculated in state change
 550                            processing */
 551
 552                         if (ctx->Driver.Enable) {
 553                            if (ctx->Driver.ActiveTexture)
 554                               (*ctx->Driver.ActiveTexture)( ctx, i );
 555                            if (enable->TexGen[i] & S_BIT)
 556                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_TRUE);
 557                            else
 558                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_FALSE);
 559                            if (enable->TexGen[i] & T_BIT)
 560                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_TRUE);
 561                            else
 562                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_FALSE);
 563                            if (enable->TexGen[i] & R_BIT)
 564                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_TRUE);
 565                            else
 566                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_FALSE);
 567                            if (enable->TexGen[i] & Q_BIT)
 568                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
 569                            else
 570                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
 571                         }
 572                      }
 573                   }
 574                   if (ctx->Driver.ActiveTexture)
 575                      (*ctx->Driver.ActiveTexture)( ctx, ctx->Texture.CurrentUnit );
 576                }
 577             }
 578             break;
 579          case GL_EVAL_BIT:
 580             MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
 581             break;
 582          case GL_FOG_BIT:
 583             {
 584                GLboolean anyChange = (GLboolean) (memcmp( &ctx->Fog, attr->data, sizeof(struct gl_fog_attrib) ) != 0);
 585                MEMCPY( &ctx->Fog, attr->data, sizeof(struct gl_fog_attrib) );
 586                if (anyChange && ctx->Driver.Fogfv) {
 587                   const GLfloat mode = (GLfloat) ctx->Fog.Mode;
 588                   const GLfloat density = ctx->Fog.Density;
 589                   const GLfloat start = ctx->Fog.Start;
 590                   const GLfloat end = ctx->Fog.End;
 591                   const GLfloat index = ctx->Fog.Index;
 592                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_MODE, &mode);
 593                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_DENSITY, &density );
 594                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_START, &start );
 595                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_END, &end );
 596                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_INDEX, &index );
 597                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_COLOR, ctx->Fog.Color );
 598                }
 599                ctx->Enabled &= ENABLE_FOG;
 600                if (ctx->Fog.Enabled) ctx->Enabled |= ENABLE_FOG;
 601             }
 602             break;
 603          case GL_HINT_BIT:
 604             MEMCPY( &ctx->Hint, attr->data, sizeof(struct gl_hint_attrib) );
 605             if (ctx->Driver.Hint) {
 606                (*ctx->Driver.Hint)( ctx, GL_PERSPECTIVE_CORRECTION_HINT,
 607                                     ctx->Hint.PerspectiveCorrection );
 608                (*ctx->Driver.Hint)( ctx, GL_POINT_SMOOTH_HINT,
 609                                     ctx->Hint.PointSmooth);
 610                (*ctx->Driver.Hint)( ctx, GL_LINE_SMOOTH_HINT,
 611                                     ctx->Hint.LineSmooth );
 612                (*ctx->Driver.Hint)( ctx, GL_POLYGON_SMOOTH_HINT,
 613                                     ctx->Hint.PolygonSmooth );
 614                (*ctx->Driver.Hint)( ctx, GL_FOG_HINT, ctx->Hint.Fog );
 615             }
 616             break;
 617          case GL_LIGHTING_BIT:
 618             MEMCPY( &ctx->Light, attr->data, sizeof(struct gl_light_attrib) );
 619             if (ctx->Driver.Enable) {
 620                GLuint i;
 621                for (i = 0; i < MAX_LIGHTS; i++) {
 622                   GLenum light = (GLenum) (GL_LIGHT0 + i);
 623                   (*ctx->Driver.Enable)( ctx, light, ctx->Light.Light[i].Enabled );
 624                }
 625                (*ctx->Driver.Enable)( ctx, GL_LIGHTING, ctx->Light.Enabled );
 626             }
 627             ctx->Enabled &= ENABLE_LIGHT;
 628             if (ctx->Light.Enabled && !is_empty_list(&ctx->Light.EnabledList))
 629                ctx->Enabled |= ENABLE_LIGHT;
 630             break;
 631          case GL_LINE_BIT:
 632             MEMCPY( &ctx->Line, attr->data, sizeof(struct gl_line_attrib) );
 633             if (ctx->Driver.Enable) {
 634                (*ctx->Driver.Enable)( ctx, GL_LINE_SMOOTH, ctx->Line.SmoothFlag );
 635                (*ctx->Driver.Enable)( ctx, GL_LINE_STIPPLE, ctx->Line.StippleFlag );
 636             }
 637             break;
 638          case GL_LIST_BIT:
 639             MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
 640             break;
 641          case GL_PIXEL_MODE_BIT:
 642             MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
 643             break;
 644          case GL_POINT_BIT:
 645             MEMCPY( &ctx->Point, attr->data, sizeof(struct gl_point_attrib) );
 646             if (ctx->Driver.Enable)
 647                (*ctx->Driver.Enable)( ctx, GL_POINT_SMOOTH, ctx->Point.SmoothFlag );
 648             break;
 649          case GL_POLYGON_BIT:
 650             {
 651                GLenum oldFrontMode = ctx->Polygon.FrontMode;
 652                GLenum oldBackMode = ctx->Polygon.BackMode;
 653                MEMCPY( &ctx->Polygon, attr->data,
 654                        sizeof(struct gl_polygon_attrib) );
 655                if ((ctx->Polygon.FrontMode != oldFrontMode ||
 656                     ctx->Polygon.BackMode != oldBackMode) &&
 657                    ctx->Driver.PolygonMode) {
 658                   (*ctx->Driver.PolygonMode)( ctx, GL_FRONT, ctx->Polygon.FrontMode);
 659                   (*ctx->Driver.PolygonMode)( ctx, GL_BACK, ctx->Polygon.BackMode);
 660                }
 661                if (ctx->Driver.CullFace)
 662                   ctx->Driver.CullFace( ctx, ctx->Polygon.CullFaceMode );
 663
 664                if (ctx->Driver.FrontFace)
 665                   ctx->Driver.FrontFace( ctx, ctx->Polygon.FrontFace );
 666
 667                if (ctx->Driver.Enable)
 668                   (*ctx->Driver.Enable)( ctx, GL_POLYGON_SMOOTH, ctx->Polygon.SmoothFlag );
 669             }
 670             break;
 671          case GL_POLYGON_STIPPLE_BIT:
 672             MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
 673             break;
 674          case GL_SCISSOR_BIT:
 675             MEMCPY( &ctx->Scissor, attr->data,
 676                     sizeof(struct gl_scissor_attrib) );
 677             if (ctx->Driver.Enable)
 678                (*ctx->Driver.Enable)( ctx, GL_SCISSOR_TEST, ctx->Scissor.Enabled );
 679             if (ctx->Driver.Scissor)
 680                ctx->Driver.Scissor( ctx, ctx->Scissor.X, ctx->Scissor.Y,
 681                                     ctx->Scissor.Width, ctx->Scissor.Height );
 682             break;
 683          case GL_STENCIL_BUFFER_BIT:
 684             MEMCPY( &ctx->Stencil, attr->data,
 685                     sizeof(struct gl_stencil_attrib) );
 686             if (ctx->Driver.StencilFunc)
 687                (*ctx->Driver.StencilFunc)( ctx, ctx->Stencil.Function,
 688                                    ctx->Stencil.Ref, ctx->Stencil.ValueMask);
 689             if (ctx->Driver.StencilMask)
 690                (*ctx->Driver.StencilMask)( ctx, ctx->Stencil.WriteMask );
 691             if (ctx->Driver.StencilOp)
 692                (*ctx->Driver.StencilOp)( ctx, ctx->Stencil.FailFunc,
 693                               ctx->Stencil.ZFailFunc, ctx->Stencil.ZPassFunc);
 694             if (ctx->Driver.ClearStencil)
 695                (*ctx->Driver.ClearStencil)( ctx, ctx->Stencil.Clear );
 696             if (ctx->Driver.Enable)
 697                (*ctx->Driver.Enable)( ctx, GL_STENCIL_TEST, ctx->Stencil.Enabled );
 698             ctx->TriangleCaps &= ~DD_STENCIL;
 699             if (ctx->Stencil.Enabled)
 700                ctx->TriangleCaps |= DD_STENCIL;
 701
 702             break;
 703          case GL_TRANSFORM_BIT:
 704             MEMCPY( &ctx->Transform, attr->data,
 705                     sizeof(struct gl_transform_attrib) );
 706             if (ctx->Driver.Enable) {
 707                (*ctx->Driver.Enable)( ctx, GL_NORMALIZE, ctx->Transform.Normalize );
 708                (*ctx->Driver.Enable)( ctx, GL_RESCALE_NORMAL_EXT, ctx->Transform.RescaleNormals );
 709             }
 710             ctx->Enabled &= ~(ENABLE_NORMALIZE|ENABLE_RESCALE);
 711             if (ctx->Transform.Normalize) ctx->Enabled |= ENABLE_NORMALIZE;
 712             if (ctx->Transform.RescaleNormals) ctx->Enabled |= ENABLE_RESCALE;
 713             break;
 714          case GL_TEXTURE_BIT:
 715             /* Take care of texture object reference counters */
 716             {
 717                GLuint u;
 718                for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 719                   ctx->Texture.Unit[u].CurrentD[1]->RefCount--;
 720                   ctx->Texture.Unit[u].CurrentD[2]->RefCount--;
 721                   ctx->Texture.Unit[u].CurrentD[3]->RefCount--;
 722                }
 723                MEMCPY( &ctx->Texture, attr->data,
 724                        sizeof(struct gl_texture_attrib) );
 725                /* restore state of the currently bound texture objects */
 726                for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 727                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[1],
 728                                      &(ctx->Texture.Unit[u].Saved1D) );
 729                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[2],
 730                                      &(ctx->Texture.Unit[u].Saved2D) );
 731                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[3],
 732                                      &(ctx->Texture.Unit[u].Saved3D) );
 733                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[1] );
 734                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[2] );
 735                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[3] );
 736
 737                }
 738             }
 739             break;
 740          case GL_VIEWPORT_BIT:
 741          {
 742             struct gl_viewport_attrib *v =
 743                (struct gl_viewport_attrib *)attr->data;
 744
 745             gl_Viewport( ctx, v->X, v->Y, v->Width, v->Height );
 746             gl_DepthRange( ctx, v->Near, v->Far );
 747             break;
 748          }
 749          default:
 750             gl_problem( ctx, "Bad attrib flag in PopAttrib");
 751             break;
 752       }
 753
 754       next = attr->next;
 755       FREE( attr->data );
 756       FREE( attr );
 757       attr = next;
 758    }
 759
 760    ctx->NewState = NEW_ALL;
 761 }
 762
 763
 764 #define GL_CLIENT_PACK_BIT (1<<20)
 765 #define GL_CLIENT_UNPACK_BIT (1<<21)
 766
 767
 768 void gl_PushClientAttrib( GLcontext *ctx, GLbitfield mask )
 769 {
 770    struct gl_attrib_node *newnode;
 771    struct gl_attrib_node *head;
 772
 773    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPushClientAttrib");
 774
 775    if (ctx->ClientAttribStackDepth>=MAX_CLIENT_ATTRIB_STACK_DEPTH) {
 776       gl_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
 777       return;
 778    }
 779
 780    /* Build linked list of attribute nodes which save all attribute */
 781    /* groups specified by the mask. */
 782    head = NULL;
 783
 784    if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
 785       struct gl_pixelstore_attrib *attr;
 786       /* packing attribs */
 787       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
 788       MEMCPY( attr, &ctx->Pack, sizeof(struct gl_pixelstore_attrib) );
 789       newnode = new_attrib_node( GL_CLIENT_PACK_BIT );
 790       newnode->data = attr;
 791       newnode->next = head;
 792       head = newnode;
 793       /* unpacking attribs */
 794       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
 795       MEMCPY( attr, &ctx->Unpack, sizeof(struct gl_pixelstore_attrib) );
 796       newnode = new_attrib_node( GL_CLIENT_UNPACK_BIT );
 797       newnode->data = attr;
 798       newnode->next = head;
 799       head = newnode;
 800    }
 801    if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
 802       struct gl_array_attrib *attr;
 803       attr = MALLOC_STRUCT( gl_array_attrib );
 804       MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
 805       newnode = new_attrib_node( GL_CLIENT_VERTEX_ARRAY_BIT );
 806       newnode->data = attr;
 807       newnode->next = head;
 808       head = newnode;
 809    }
 810
 811    ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
 812    ctx->ClientAttribStackDepth++;
 813 }
 814
 815
 816
 817
 818 void gl_PopClientAttrib( GLcontext *ctx )
 819 {
 820    struct gl_attrib_node *attr, *next;
 821
 822    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPopClientAttrib");
 823
 824    if (ctx->ClientAttribStackDepth==0) {
 825       gl_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
 826       return;
 827    }
 828
 829    ctx->ClientAttribStackDepth--;
 830    attr = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
 831
 832    while (attr) {
 833       switch (attr->kind) {
 834          case GL_CLIENT_PACK_BIT:
 835             MEMCPY( &ctx->Pack, attr->data,
 836                     sizeof(struct gl_pixelstore_attrib) );
 837             break;
 838          case GL_CLIENT_UNPACK_BIT:
 839             MEMCPY( &ctx->Unpack, attr->data,
 840                     sizeof(struct gl_pixelstore_attrib) );
 841             break;
 842          case GL_CLIENT_VERTEX_ARRAY_BIT:
 843             MEMCPY( &ctx->Array, attr->data,
 844                     sizeof(struct gl_array_attrib) );
 845             break;
 846          default:
 847             gl_problem( ctx, "Bad attrib flag in PopClientAttrib");
 848             break;
 849       }
 850
 851       next = attr->next;
 852       FREE( attr->data );
 853       FREE( attr );
 854       attr = next;
 855    }
 856
 857    ctx->NewState = NEW_ALL;
 858 }
 859