src/mesa/main/attrib.c

   1 /* $Id: attrib.c,v 1.8 1999/10/13 18:42:49 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 #ifdef XFree86Server
  49 #undef MISC_H
  50 #include "GL/xf86glx.h"
  51 #endif
  52 #endif
  53
  54
  55
  56
  57 /*
  58  * Allocate a new attribute state node.  These nodes have a
  59  * "kind" value and a pointer to a struct of state data.
  60  */
  61 static struct gl_attrib_node *new_attrib_node( GLbitfield kind )
  62 {
  63    struct gl_attrib_node *an = MALLOC_STRUCT(gl_attrib_node);
  64    if (an) {
  65       an->kind = kind;
  66    }
  67    return an;
  68 }
  69
  70
  71
  72 /*
  73  * Copy texture object state from one texture object to another.
  74  */
  75 static void copy_texobj_state( struct gl_texture_object *dest,
  76                                const struct gl_texture_object *src )
  77 {
  78    /*
  79    dest->Name = src->Name;
  80    dest->Dimensions = src->Dimensions;
  81    */
  82    dest->Priority = src->Priority;
  83    dest->BorderColor[0] = src->BorderColor[0];
  84    dest->BorderColor[1] = src->BorderColor[1];
  85    dest->BorderColor[2] = src->BorderColor[2];
  86    dest->BorderColor[3] = src->BorderColor[3];
  87    dest->WrapS = src->WrapS;
  88    dest->WrapT = src->WrapT;
  89    dest->WrapR = src->WrapR;
  90    dest->MinFilter = src->MinFilter;
  91    dest->MagFilter = src->MagFilter;
  92    dest->MinLod = src->MinLod;
  93    dest->MaxLod = src->MaxLod;
  94    dest->BaseLevel = src->BaseLevel;
  95    dest->MaxLevel = src->MaxLevel;
  96    dest->P = src->P;
  97    dest->M = src->M;
  98    dest->MinMagThresh = src->MinMagThresh;
  99    memcpy( dest->Palette, src->Palette,
 100            sizeof(GLubyte) * MAX_TEXTURE_PALETTE_SIZE * 4 );
 101    dest->PaletteSize = src->PaletteSize;
 102    dest->PaletteIntFormat = src->PaletteIntFormat;
 103    dest->PaletteFormat = src->PaletteFormat;
 104    dest->Complete = src->Complete;
 105    dest->SampleFunc = src->SampleFunc;
 106 }
 107
 108
 109
 110 void gl_PushAttrib( GLcontext* ctx, GLbitfield mask )
 111 {
 112    struct gl_attrib_node *newnode;
 113    struct gl_attrib_node *head;
 114
 115    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPushAttrib");
 116
 117    if (MESA_VERBOSE&VERBOSE_API)
 118       fprintf(stderr, "glPushAttrib %x\n", mask);
 119
 120    if (ctx->AttribStackDepth>=MAX_ATTRIB_STACK_DEPTH) {
 121       gl_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
 122       return;
 123    }
 124
 125    /* Build linked list of attribute nodes which save all attribute */
 126    /* groups specified by the mask. */
 127    head = NULL;
 128
 129    if (mask & GL_ACCUM_BUFFER_BIT) {
 130       struct gl_accum_attrib *attr;
 131       attr = MALLOC_STRUCT( gl_accum_attrib );
 132       MEMCPY( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );
 133       newnode = new_attrib_node( GL_ACCUM_BUFFER_BIT );
 134       newnode->data = attr;
 135       newnode->next = head;
 136       head = newnode;
 137    }
 138
 139    if (mask & GL_COLOR_BUFFER_BIT) {
 140       struct gl_colorbuffer_attrib *attr;
 141       attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
 142       MEMCPY( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
 143       newnode = new_attrib_node( GL_COLOR_BUFFER_BIT );
 144       newnode->data = attr;
 145       newnode->next = head;
 146       head = newnode;
 147    }
 148
 149    if (mask & GL_CURRENT_BIT) {
 150       struct gl_current_attrib *attr;
 151       attr = MALLOC_STRUCT( gl_current_attrib );
 152       MEMCPY( attr, &ctx->Current, sizeof(struct gl_current_attrib) );
 153       newnode = new_attrib_node( GL_CURRENT_BIT );
 154       newnode->data = attr;
 155       newnode->next = head;
 156       head = newnode;
 157    }
 158
 159    if (mask & GL_DEPTH_BUFFER_BIT) {
 160       struct gl_depthbuffer_attrib *attr;
 161       attr = MALLOC_STRUCT( gl_depthbuffer_attrib );
 162       MEMCPY( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );
 163       newnode = new_attrib_node( GL_DEPTH_BUFFER_BIT );
 164       newnode->data = attr;
 165       newnode->next = head;
 166       head = newnode;
 167    }
 168
 169    if (mask & GL_ENABLE_BIT) {
 170       struct gl_enable_attrib *attr;
 171       GLuint i;
 172       attr = MALLOC_STRUCT( gl_enable_attrib );
 173       /* Copy enable flags from all other attributes into the enable struct. */
 174       attr->AlphaTest = ctx->Color.AlphaEnabled;
 175       attr->AutoNormal = ctx->Eval.AutoNormal;
 176       attr->Blend = ctx->Color.BlendEnabled;
 177       for (i=0;i<MAX_CLIP_PLANES;i++) {
 178          attr->ClipPlane[i] = ctx->Transform.ClipEnabled[i];
 179       }
 180       attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;
 181       attr->CullFace = ctx->Polygon.CullFlag;
 182       attr->DepthTest = ctx->Depth.Test;
 183       attr->Dither = ctx->Color.DitherFlag;
 184       attr->Fog = ctx->Fog.Enabled;
 185       for (i=0;i<MAX_LIGHTS;i++) {
 186          attr->Light[i] = ctx->Light.Light[i].Enabled;
 187       }
 188       attr->Lighting = ctx->Light.Enabled;
 189       attr->LineSmooth = ctx->Line.SmoothFlag;
 190       attr->LineStipple = ctx->Line.StippleFlag;
 191       attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
 192       attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
 193       attr->Map1Color4 = ctx->Eval.Map1Color4;
 194       attr->Map1Index = ctx->Eval.Map1Index;
 195       attr->Map1Normal = ctx->Eval.Map1Normal;
 196       attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
 197       attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
 198       attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
 199       attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
 200       attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
 201       attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
 202       attr->Map2Color4 = ctx->Eval.Map2Color4;
 203       attr->Map2Index = ctx->Eval.Map2Index;
 204       attr->Map2Normal = ctx->Eval.Map2Normal;
 205       attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
 206       attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
 207       attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
 208       attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
 209       attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
 210       attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
 211       attr->Normalize = ctx->Transform.Normalize;
 212       attr->PointSmooth = ctx->Point.SmoothFlag;
 213       attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;
 214       attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;
 215       attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;
 216       attr->PolygonSmooth = ctx->Polygon.SmoothFlag;
 217       attr->PolygonStipple = ctx->Polygon.StippleFlag;
 218       attr->RescaleNormals = ctx->Transform.RescaleNormals;
 219       attr->Scissor = ctx->Scissor.Enabled;
 220       attr->Stencil = ctx->Stencil.Enabled;
 221       attr->Texture = ctx->Texture.Enabled;
 222       for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 223          attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
 224       }
 225       newnode = new_attrib_node( GL_ENABLE_BIT );
 226       newnode->data = attr;
 227       newnode->next = head;
 228       head = newnode;
 229    }
 230
 231    if (mask & GL_EVAL_BIT) {
 232       struct gl_eval_attrib *attr;
 233       attr = MALLOC_STRUCT( gl_eval_attrib );
 234       MEMCPY( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
 235       newnode = new_attrib_node( GL_EVAL_BIT );
 236       newnode->data = attr;
 237       newnode->next = head;
 238       head = newnode;
 239    }
 240
 241    if (mask & GL_FOG_BIT) {
 242       struct gl_fog_attrib *attr;
 243       attr = MALLOC_STRUCT( gl_fog_attrib );
 244       MEMCPY( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
 245       newnode = new_attrib_node( GL_FOG_BIT );
 246       newnode->data = attr;
 247       newnode->next = head;
 248       head = newnode;
 249    }
 250
 251    if (mask & GL_HINT_BIT) {
 252       struct gl_hint_attrib *attr;
 253       attr = MALLOC_STRUCT( gl_hint_attrib );
 254       MEMCPY( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
 255       newnode = new_attrib_node( GL_HINT_BIT );
 256       newnode->data = attr;
 257       newnode->next = head;
 258       head = newnode;
 259    }
 260
 261    if (mask & GL_LIGHTING_BIT) {
 262       struct gl_light_attrib *attr;
 263       attr = MALLOC_STRUCT( gl_light_attrib );
 264       MEMCPY( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
 265       newnode = new_attrib_node( GL_LIGHTING_BIT );
 266       newnode->data = attr;
 267       newnode->next = head;
 268       head = newnode;
 269    }
 270
 271    if (mask & GL_LINE_BIT) {
 272       struct gl_line_attrib *attr;
 273       attr = MALLOC_STRUCT( gl_line_attrib );
 274       MEMCPY( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
 275       newnode = new_attrib_node( GL_LINE_BIT );
 276       newnode->data = attr;
 277       newnode->next = head;
 278       head = newnode;
 279    }
 280
 281    if (mask & GL_LIST_BIT) {
 282       struct gl_list_attrib *attr;
 283       attr = MALLOC_STRUCT( gl_list_attrib );
 284       MEMCPY( attr, &ctx->List, sizeof(struct gl_list_attrib) );
 285       newnode = new_attrib_node( GL_LIST_BIT );
 286       newnode->data = attr;
 287       newnode->next = head;
 288       head = newnode;
 289    }
 290
 291    if (mask & GL_PIXEL_MODE_BIT) {
 292       struct gl_pixel_attrib *attr;
 293       attr = MALLOC_STRUCT( gl_pixel_attrib );
 294       MEMCPY( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
 295       newnode = new_attrib_node( GL_PIXEL_MODE_BIT );
 296       newnode->data = attr;
 297       newnode->next = head;
 298       head = newnode;
 299    }
 300
 301    if (mask & GL_POINT_BIT) {
 302       struct gl_point_attrib *attr;
 303       attr = MALLOC_STRUCT( gl_point_attrib );
 304       MEMCPY( attr, &ctx->Point, sizeof(struct gl_point_attrib) );
 305       newnode = new_attrib_node( GL_POINT_BIT );
 306       newnode->data = attr;
 307       newnode->next = head;
 308       head = newnode;
 309    }
 310
 311    if (mask & GL_POLYGON_BIT) {
 312       struct gl_polygon_attrib *attr;
 313       attr = MALLOC_STRUCT( gl_polygon_attrib );
 314       MEMCPY( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );
 315       newnode = new_attrib_node( GL_POLYGON_BIT );
 316       newnode->data = attr;
 317       newnode->next = head;
 318       head = newnode;
 319    }
 320
 321    if (mask & GL_POLYGON_STIPPLE_BIT) {
 322       GLuint *stipple;
 323       stipple = (GLuint *) MALLOC( 32*sizeof(GLuint) );
 324       MEMCPY( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );
 325       newnode = new_attrib_node( GL_POLYGON_STIPPLE_BIT );
 326       newnode->data = stipple;
 327       newnode->next = head;
 328       head = newnode;
 329    }
 330
 331    if (mask & GL_SCISSOR_BIT) {
 332       struct gl_scissor_attrib *attr;
 333       attr = MALLOC_STRUCT( gl_scissor_attrib );
 334       MEMCPY( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );
 335       newnode = new_attrib_node( GL_SCISSOR_BIT );
 336       newnode->data = attr;
 337       newnode->next = head;
 338       head = newnode;
 339    }
 340
 341    if (mask & GL_STENCIL_BUFFER_BIT) {
 342       struct gl_stencil_attrib *attr;
 343       attr = MALLOC_STRUCT( gl_stencil_attrib );
 344       MEMCPY( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );
 345       newnode = new_attrib_node( GL_STENCIL_BUFFER_BIT );
 346       newnode->data = attr;
 347       newnode->next = head;
 348       head = newnode;
 349    }
 350
 351    if (mask & GL_TEXTURE_BIT) {
 352       struct gl_texture_attrib *attr;
 353       GLuint u;
 354       /* Take care of texture object reference counters */
 355       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 356          ctx->Texture.Unit[u].CurrentD[1]->RefCount++;
 357          ctx->Texture.Unit[u].CurrentD[2]->RefCount++;
 358          ctx->Texture.Unit[u].CurrentD[3]->RefCount++;
 359       }
 360       attr = MALLOC_STRUCT( gl_texture_attrib );
 361       MEMCPY( attr, &ctx->Texture, sizeof(struct gl_texture_attrib) );
 362       /* copy state of the currently bound texture objects */
 363       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 364          copy_texobj_state(&attr->Unit[u].Saved1D, attr->Unit[u].CurrentD[1]);
 365          copy_texobj_state(&attr->Unit[u].Saved2D, attr->Unit[u].CurrentD[2]);
 366          copy_texobj_state(&attr->Unit[u].Saved3D, attr->Unit[u].CurrentD[3]);
 367       }
 368       newnode = new_attrib_node( GL_TEXTURE_BIT );
 369       newnode->data = attr;
 370       newnode->next = head;
 371       head = newnode;
 372    }
 373
 374    if (mask & GL_TRANSFORM_BIT) {
 375       struct gl_transform_attrib *attr;
 376       attr = MALLOC_STRUCT( gl_transform_attrib );
 377       MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
 378       newnode = new_attrib_node( GL_TRANSFORM_BIT );
 379       newnode->data = attr;
 380       newnode->next = head;
 381       head = newnode;
 382    }
 383
 384    if (mask & GL_VIEWPORT_BIT) {
 385       struct gl_viewport_attrib *attr;
 386       attr = MALLOC_STRUCT( gl_viewport_attrib );
 387       MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
 388       newnode = new_attrib_node( GL_VIEWPORT_BIT );
 389       newnode->data = attr;
 390       newnode->next = head;
 391       head = newnode;
 392    }
 393
 394    ctx->AttribStack[ctx->AttribStackDepth] = head;
 395    ctx->AttribStackDepth++;
 396 }
 397
 398
 399
 400 /*
 401  * This function is kind of long just because we have to call a lot
 402  * of device driver functions to update device driver state.
 403  */
 404 void gl_PopAttrib( GLcontext* ctx )
 405 {
 406    struct gl_attrib_node *attr, *next;
 407
 408    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPopAttrib");
 409
 410
 411    if (ctx->AttribStackDepth==0) {
 412       gl_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
 413       return;
 414    }
 415
 416    ctx->AttribStackDepth--;
 417    attr = ctx->AttribStack[ctx->AttribStackDepth];
 418
 419    while (attr) {
 420
 421       if (MESA_VERBOSE&VERBOSE_API)
 422          fprintf(stderr, "glPopAttrib %s\n", gl_lookup_enum_by_nr(attr->kind));
 423
 424       switch (attr->kind) {
 425          case GL_ACCUM_BUFFER_BIT:
 426             MEMCPY( &ctx->Accum, attr->data, sizeof(struct gl_accum_attrib) );
 427             break;
 428          case GL_COLOR_BUFFER_BIT:
 429             {
 430                GLenum oldDrawBuffer = ctx->Color.DrawBuffer;
 431                GLenum oldAlphaFunc = ctx->Color.AlphaFunc;
 432                GLubyte oldAlphaRef = ctx->Color.AlphaRef;
 433                GLenum oldBlendSrc = ctx->Color.BlendSrcRGB;
 434                GLenum oldBlendDst = ctx->Color.BlendDstRGB;
 435                MEMCPY( &ctx->Color, attr->data,
 436                        sizeof(struct gl_colorbuffer_attrib) );
 437                if (ctx->Color.DrawBuffer != oldDrawBuffer) {
 438                   gl_DrawBuffer(ctx, ctx->Color.DrawBuffer);
 439                }
 440                if ((ctx->Color.AlphaFunc != oldAlphaFunc ||
 441                     ctx->Color.AlphaRef != oldAlphaRef) &&
 442                    ctx->Driver.AlphaFunc)
 443                   (*ctx->Driver.AlphaFunc)( ctx, ctx->Color.AlphaFunc,
 444                                             ctx->Color.AlphaRef / 255.0F);
 445                if ((ctx->Color.BlendSrcRGB != oldBlendSrc ||
 446                     ctx->Color.BlendSrcRGB != oldBlendDst) &&
 447                    ctx->Driver.BlendFunc)
 448                   (*ctx->Driver.BlendFunc)( ctx, ctx->Color.BlendSrcRGB,
 449                                             ctx->Color.BlendDstRGB);
 450             }
 451             break;
 452          case GL_CURRENT_BIT:
 453             MEMCPY( &ctx->Current, attr->data,
 454                     sizeof(struct gl_current_attrib) );
 455             break;
 456          case GL_DEPTH_BUFFER_BIT:
 457             {
 458                GLenum oldDepthFunc = ctx->Depth.Func;
 459                GLboolean oldDepthMask = ctx->Depth.Mask;
 460                GLfloat oldDepthClear = ctx->Depth.Clear;
 461                MEMCPY( &ctx->Depth, attr->data,
 462                        sizeof(struct gl_depthbuffer_attrib) );
 463                if (ctx->Depth.Func != oldDepthFunc && ctx->Driver.DepthFunc)
 464                   (*ctx->Driver.DepthFunc)( ctx, ctx->Depth.Func );
 465                if (ctx->Depth.Mask != oldDepthMask && ctx->Driver.DepthMask)
 466                   (*ctx->Driver.DepthMask)( ctx, ctx->Depth.Mask );
 467                if (ctx->Depth.Clear != oldDepthClear && ctx->Driver.ClearDepth)
 468                   (*ctx->Driver.ClearDepth)( ctx, ctx->Depth.Clear );
 469             }
 470             break;
 471          case GL_ENABLE_BIT:
 472             {
 473                const struct gl_enable_attrib *enable;
 474                enable = (const struct gl_enable_attrib *) attr->data;
 475
 476 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)          \
 477         if ((VALUE) != (NEWVALUE)) {                    \
 478            gl_set_enable( ctx, ENUM, (NEWVALUE) );      \
 479         }
 480
 481                TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
 482                TEST_AND_UPDATE(ctx->Transform.Normalize, enable->AutoNormal, GL_NORMALIZE);
 483                TEST_AND_UPDATE(ctx->Color.BlendEnabled, enable->Blend, GL_BLEND);
 484                {
 485                   GLuint i;
 486                   for (i=0;i<MAX_CLIP_PLANES;i++) {
 487                      if (ctx->Transform.ClipEnabled[i] != enable->ClipPlane[i])
 488                         gl_set_enable( ctx, (GLenum) (GL_CLIP_PLANE0 + i), enable->ClipPlane[i] );
 489                   }
 490                }
 491                TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial, GL_COLOR_MATERIAL);
 492                TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
 493                TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
 494                TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
 495                TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
 496                TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
 497                TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
 498                TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple, GL_LINE_STIPPLE);
 499                TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp, GL_INDEX_LOGIC_OP);
 500                TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp, GL_COLOR_LOGIC_OP);
 501                TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
 502                TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
 503                TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
 504                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1, GL_MAP1_TEXTURE_COORD_1);
 505                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2, GL_MAP1_TEXTURE_COORD_2);
 506                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3, GL_MAP1_TEXTURE_COORD_3);
 507                TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4, GL_MAP1_TEXTURE_COORD_4);
 508                TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3, GL_MAP1_VERTEX_3);
 509                TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4, GL_MAP1_VERTEX_4);
 510                TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
 511                TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
 512                TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
 513                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1, GL_MAP2_TEXTURE_COORD_1);
 514                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2, GL_MAP2_TEXTURE_COORD_2);
 515                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3, GL_MAP2_TEXTURE_COORD_3);
 516                TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4, GL_MAP2_TEXTURE_COORD_4);
 517                TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3, GL_MAP2_VERTEX_3);
 518                TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4, GL_MAP2_VERTEX_4);
 519                TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
 520                TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals, GL_RESCALE_NORMAL_EXT);
 521                TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth, GL_POINT_SMOOTH);
 522                TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint, GL_POLYGON_OFFSET_POINT);
 523                TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine, GL_POLYGON_OFFSET_LINE);
 524                TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill, GL_POLYGON_OFFSET_FILL);
 525                TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth, GL_POLYGON_SMOOTH);
 526                TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple, GL_POLYGON_STIPPLE);
 527                TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
 528                TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
 529                if (ctx->Texture.Enabled != enable->Texture) {
 530                   ctx->Texture.Enabled = enable->Texture;
 531                   if (ctx->Driver.Enable) {
 532                      if (ctx->Driver.ActiveTexture)
 533                         (*ctx->Driver.ActiveTexture)( ctx, 0 );
 534                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D, (GLboolean) (enable->Texture & TEXTURE0_1D) );
 535                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D, (GLboolean) (enable->Texture & TEXTURE0_2D) );
 536                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D, (GLboolean) (enable->Texture & TEXTURE0_3D) );
 537                      if (ctx->Driver.ActiveTexture)
 538                         (*ctx->Driver.ActiveTexture)( ctx, 1 );
 539                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D, (GLboolean) (enable->Texture & TEXTURE1_1D) );
 540                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D, (GLboolean) (enable->Texture & TEXTURE1_2D) );
 541                      (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D, (GLboolean) (enable->Texture & TEXTURE1_3D) );
 542                      if (ctx->Driver.ActiveTexture)
 543                         (*ctx->Driver.ActiveTexture)( ctx, ctx->Texture.CurrentUnit );
 544                   }
 545                }
 546 #undef TEST_AND_UPDATE
 547                {
 548                   GLuint i;
 549                   for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 550                      if (ctx->Texture.Unit[i].TexGenEnabled != enable->TexGen[i]) {
 551                         ctx->Texture.Unit[i].TexGenEnabled = enable->TexGen[i];
 552
 553                         /* ctx->Enabled recalculated in state change
 554                            processing */
 555
 556                         if (ctx->Driver.Enable) {
 557                            if (ctx->Driver.ActiveTexture)
 558                               (*ctx->Driver.ActiveTexture)( ctx, i );
 559                            if (enable->TexGen[i] & S_BIT)
 560                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_TRUE);
 561                            else
 562                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_FALSE);
 563                            if (enable->TexGen[i] & T_BIT)
 564                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_TRUE);
 565                            else
 566                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_FALSE);
 567                            if (enable->TexGen[i] & R_BIT)
 568                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_TRUE);
 569                            else
 570                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_FALSE);
 571                            if (enable->TexGen[i] & Q_BIT)
 572                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
 573                            else
 574                               (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
 575                         }
 576                      }
 577                   }
 578                   if (ctx->Driver.ActiveTexture)
 579                      (*ctx->Driver.ActiveTexture)( ctx, ctx->Texture.CurrentUnit );
 580                }
 581             }
 582             break;
 583          case GL_EVAL_BIT:
 584             MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
 585             break;
 586          case GL_FOG_BIT:
 587             {
 588                GLboolean anyChange = (memcmp( &ctx->Fog, attr->data, sizeof(struct gl_fog_attrib) ) != 0);
 589                MEMCPY( &ctx->Fog, attr->data, sizeof(struct gl_fog_attrib) );
 590                if (anyChange && ctx->Driver.Fogfv) {
 591                   const GLfloat mode = ctx->Fog.Mode;
 592                   const GLfloat density = ctx->Fog.Density;
 593                   const GLfloat start = ctx->Fog.Start;
 594                   const GLfloat end = ctx->Fog.End;
 595                   const GLfloat index = ctx->Fog.Index;
 596                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_MODE, &mode);
 597                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_DENSITY, &density );
 598                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_START, &start );
 599                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_END, &end );
 600                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_INDEX, &index );
 601                   (*ctx->Driver.Fogfv)( ctx, GL_FOG_COLOR, ctx->Fog.Color );
 602                }
 603                ctx->Enabled &= ENABLE_FOG;
 604                if (ctx->Fog.Enabled) ctx->Enabled |= ENABLE_FOG;
 605             }
 606             break;
 607          case GL_HINT_BIT:
 608             MEMCPY( &ctx->Hint, attr->data, sizeof(struct gl_hint_attrib) );
 609             if (ctx->Driver.Hint) {
 610                (*ctx->Driver.Hint)( ctx, GL_PERSPECTIVE_CORRECTION_HINT,
 611                                     ctx->Hint.PerspectiveCorrection );
 612                (*ctx->Driver.Hint)( ctx, GL_POINT_SMOOTH_HINT,
 613                                     ctx->Hint.PointSmooth);
 614                (*ctx->Driver.Hint)( ctx, GL_LINE_SMOOTH_HINT,
 615                                     ctx->Hint.LineSmooth );
 616                (*ctx->Driver.Hint)( ctx, GL_POLYGON_SMOOTH_HINT,
 617                                     ctx->Hint.PolygonSmooth );
 618                (*ctx->Driver.Hint)( ctx, GL_FOG_HINT, ctx->Hint.Fog );
 619             }
 620             break;
 621          case GL_LIGHTING_BIT:
 622             MEMCPY( &ctx->Light, attr->data, sizeof(struct gl_light_attrib) );
 623             if (ctx->Driver.Enable) {
 624                GLuint i;
 625                for (i = 0; i < MAX_LIGHTS; i++) {
 626                   GLenum light = (GLenum) (GL_LIGHT0 + i);
 627                   (*ctx->Driver.Enable)( ctx, light, ctx->Light.Light[i].Enabled );
 628                }
 629                (*ctx->Driver.Enable)( ctx, GL_LIGHTING, ctx->Light.Enabled );
 630             }
 631             ctx->Enabled &= ENABLE_LIGHT;
 632             if (ctx->Light.Enabled && !is_empty_list(&ctx->Light.EnabledList))
 633                ctx->Enabled |= ENABLE_LIGHT;
 634             break;
 635          case GL_LINE_BIT:
 636             MEMCPY( &ctx->Line, attr->data, sizeof(struct gl_line_attrib) );
 637             if (ctx->Driver.Enable) {
 638                (*ctx->Driver.Enable)( ctx, GL_LINE_SMOOTH, ctx->Line.SmoothFlag );
 639                (*ctx->Driver.Enable)( ctx, GL_LINE_STIPPLE, ctx->Line.StippleFlag );
 640             }
 641             break;
 642          case GL_LIST_BIT:
 643             MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
 644             break;
 645          case GL_PIXEL_MODE_BIT:
 646             MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
 647             break;
 648          case GL_POINT_BIT:
 649             MEMCPY( &ctx->Point, attr->data, sizeof(struct gl_point_attrib) );
 650             if (ctx->Driver.Enable)
 651                (*ctx->Driver.Enable)( ctx, GL_POINT_SMOOTH, ctx->Point.SmoothFlag );
 652             break;
 653          case GL_POLYGON_BIT:
 654             {
 655                GLenum oldFrontMode = ctx->Polygon.FrontMode;
 656                GLenum oldBackMode = ctx->Polygon.BackMode;
 657                MEMCPY( &ctx->Polygon, attr->data,
 658                        sizeof(struct gl_polygon_attrib) );
 659                if ((ctx->Polygon.FrontMode != oldFrontMode ||
 660                     ctx->Polygon.BackMode != oldBackMode) &&
 661                    ctx->Driver.PolygonMode) {
 662                   (*ctx->Driver.PolygonMode)( ctx, GL_FRONT, ctx->Polygon.FrontMode);
 663                   (*ctx->Driver.PolygonMode)( ctx, GL_BACK, ctx->Polygon.BackMode);
 664                }
 665                if (ctx->Driver.CullFace)
 666                   ctx->Driver.CullFace( ctx, ctx->Polygon.CullFaceMode );
 667
 668                if (ctx->Driver.FrontFace)
 669                   ctx->Driver.FrontFace( ctx, ctx->Polygon.FrontFace );
 670
 671                if (ctx->Driver.Enable)
 672                   (*ctx->Driver.Enable)( ctx, GL_POLYGON_SMOOTH, ctx->Polygon.SmoothFlag );
 673             }
 674             break;
 675          case GL_POLYGON_STIPPLE_BIT:
 676             MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
 677             break;
 678          case GL_SCISSOR_BIT:
 679             MEMCPY( &ctx->Scissor, attr->data,
 680                     sizeof(struct gl_scissor_attrib) );
 681             if (ctx->Driver.Enable)
 682                (*ctx->Driver.Enable)( ctx, GL_SCISSOR_TEST, ctx->Scissor.Enabled );
 683             if (ctx->Driver.Scissor)
 684                ctx->Driver.Scissor( ctx, ctx->Scissor.X, ctx->Scissor.Y,
 685                                     ctx->Scissor.Width, ctx->Scissor.Height );
 686             break;
 687          case GL_STENCIL_BUFFER_BIT:
 688             MEMCPY( &ctx->Stencil, attr->data,
 689                     sizeof(struct gl_stencil_attrib) );
 690             if (ctx->Driver.StencilFunc)
 691                (*ctx->Driver.StencilFunc)( ctx, ctx->Stencil.Function,
 692                                    ctx->Stencil.Ref, ctx->Stencil.ValueMask);
 693             if (ctx->Driver.StencilMask)
 694                (*ctx->Driver.StencilMask)( ctx, ctx->Stencil.WriteMask );
 695             if (ctx->Driver.StencilOp)
 696                (*ctx->Driver.StencilOp)( ctx, ctx->Stencil.FailFunc,
 697                               ctx->Stencil.ZFailFunc, ctx->Stencil.ZPassFunc);
 698             if (ctx->Driver.ClearStencil)
 699                (*ctx->Driver.ClearStencil)( ctx, ctx->Stencil.Clear );
 700             if (ctx->Driver.Enable)
 701                (*ctx->Driver.Enable)( ctx, GL_STENCIL_TEST, ctx->Stencil.Enabled );
 702             ctx->TriangleCaps &= ~DD_STENCIL;
 703             if (ctx->Stencil.Enabled)
 704                ctx->TriangleCaps |= DD_STENCIL;
 705
 706             break;
 707          case GL_TRANSFORM_BIT:
 708             MEMCPY( &ctx->Transform, attr->data,
 709                     sizeof(struct gl_transform_attrib) );
 710             if (ctx->Driver.Enable) {
 711                (*ctx->Driver.Enable)( ctx, GL_NORMALIZE, ctx->Transform.Normalize );
 712                (*ctx->Driver.Enable)( ctx, GL_RESCALE_NORMAL_EXT, ctx->Transform.RescaleNormals );
 713             }
 714             ctx->Enabled &= ~(ENABLE_NORMALIZE|ENABLE_RESCALE);
 715             if (ctx->Transform.Normalize) ctx->Enabled |= ENABLE_NORMALIZE;
 716             if (ctx->Transform.RescaleNormals) ctx->Enabled |= ENABLE_RESCALE;
 717             break;
 718          case GL_TEXTURE_BIT:
 719             /* Take care of texture object reference counters */
 720             {
 721                GLuint u;
 722                for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 723                   ctx->Texture.Unit[u].CurrentD[1]->RefCount--;
 724                   ctx->Texture.Unit[u].CurrentD[2]->RefCount--;
 725                   ctx->Texture.Unit[u].CurrentD[3]->RefCount--;
 726                }
 727                MEMCPY( &ctx->Texture, attr->data,
 728                        sizeof(struct gl_texture_attrib) );
 729                /* restore state of the currently bound texture objects */
 730                for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 731                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[1],
 732                                      &(ctx->Texture.Unit[u].Saved1D) );
 733                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[2],
 734                                      &(ctx->Texture.Unit[u].Saved2D) );
 735                   copy_texobj_state( ctx->Texture.Unit[u].CurrentD[3],
 736                                      &(ctx->Texture.Unit[u].Saved3D) );
 737                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[1] );
 738                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[2] );
 739                   gl_put_texobj_on_dirty_list( ctx, ctx->Texture.Unit[u].CurrentD[3] );
 740
 741                }
 742             }
 743             break;
 744          case GL_VIEWPORT_BIT:
 745          {
 746             struct gl_viewport_attrib *v =
 747                (struct gl_viewport_attrib *)attr->data;
 748
 749             gl_Viewport( ctx, v->X, v->Y, v->Width, v->Height );
 750             gl_DepthRange( ctx, v->Near, v->Far );
 751             break;
 752          }
 753          default:
 754             gl_problem( ctx, "Bad attrib flag in PopAttrib");
 755             break;
 756       }
 757
 758       next = attr->next;
 759       FREE( attr->data );
 760       FREE( attr );
 761       attr = next;
 762    }
 763
 764    ctx->NewState = NEW_ALL;
 765 }
 766
 767
 768 #define GL_CLIENT_PACK_BIT (1<<20)
 769 #define GL_CLIENT_UNPACK_BIT (1<<21)
 770
 771
 772 void gl_PushClientAttrib( GLcontext *ctx, GLbitfield mask )
 773 {
 774    struct gl_attrib_node *newnode;
 775    struct gl_attrib_node *head;
 776
 777    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPushClientAttrib");
 778
 779    if (ctx->ClientAttribStackDepth>=MAX_CLIENT_ATTRIB_STACK_DEPTH) {
 780       gl_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
 781       return;
 782    }
 783
 784    /* Build linked list of attribute nodes which save all attribute */
 785    /* groups specified by the mask. */
 786    head = NULL;
 787
 788    if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
 789       struct gl_pixelstore_attrib *attr;
 790       /* packing attribs */
 791       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
 792       MEMCPY( attr, &ctx->Pack, sizeof(struct gl_pixelstore_attrib) );
 793       newnode = new_attrib_node( GL_CLIENT_PACK_BIT );
 794       newnode->data = attr;
 795       newnode->next = head;
 796       head = newnode;
 797       /* unpacking attribs */
 798       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
 799       MEMCPY( attr, &ctx->Unpack, sizeof(struct gl_pixelstore_attrib) );
 800       newnode = new_attrib_node( GL_CLIENT_UNPACK_BIT );
 801       newnode->data = attr;
 802       newnode->next = head;
 803       head = newnode;
 804    }
 805    if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
 806       struct gl_array_attrib *attr;
 807       attr = MALLOC_STRUCT( gl_array_attrib );
 808       MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
 809       newnode = new_attrib_node( GL_CLIENT_VERTEX_ARRAY_BIT );
 810       newnode->data = attr;
 811       newnode->next = head;
 812       head = newnode;
 813    }
 814
 815    ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
 816    ctx->ClientAttribStackDepth++;
 817 }
 818
 819
 820
 821
 822 void gl_PopClientAttrib( GLcontext *ctx )
 823 {
 824    struct gl_attrib_node *attr, *next;
 825
 826    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPopClientAttrib");
 827
 828    if (ctx->ClientAttribStackDepth==0) {
 829       gl_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
 830       return;
 831    }
 832
 833    ctx->ClientAttribStackDepth--;
 834    attr = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
 835
 836    while (attr) {
 837       switch (attr->kind) {
 838          case GL_CLIENT_PACK_BIT:
 839             MEMCPY( &ctx->Pack, attr->data,
 840                     sizeof(struct gl_pixelstore_attrib) );
 841             break;
 842          case GL_CLIENT_UNPACK_BIT:
 843             MEMCPY( &ctx->Unpack, attr->data,
 844                     sizeof(struct gl_pixelstore_attrib) );
 845             break;
 846          case GL_CLIENT_VERTEX_ARRAY_BIT:
 847             MEMCPY( &ctx->Array, attr->data,
 848                     sizeof(struct gl_array_attrib) );
 849             break;
 850          default:
 851             gl_problem( ctx, "Bad attrib flag in PopClientAttrib");
 852             break;
 853       }
 854
 855       next = attr->next;
 856       FREE( attr->data );
 857       FREE( attr );
 858       attr = next;
 859    }
 860
 861    ctx->NewState = NEW_ALL;
 862 }
 863