src/mesa/main/colortab.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.5.2
   4  *
   5  * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 #include "glheader.h"
  27 #include "bufferobj.h"
  28 #include "colortab.h"
  29 #include "context.h"
  30 #include "image.h"
  31 #include "macros.h"
  32 #include "state.h"
  33
  34
  35 /**
  36  * Given an internalFormat token passed to glColorTable,
  37  * return the corresponding base format.
  38  * Return -1 if invalid token.
  39  */
  40 static GLint
  41 base_colortab_format( GLenum format )
  42 {
  43    switch (format) {
  44       case GL_ALPHA:
  45       case GL_ALPHA4:
  46       case GL_ALPHA8:
  47       case GL_ALPHA12:
  48       case GL_ALPHA16:
  49          return GL_ALPHA;
  50       case GL_LUMINANCE:
  51       case GL_LUMINANCE4:
  52       case GL_LUMINANCE8:
  53       case GL_LUMINANCE12:
  54       case GL_LUMINANCE16:
  55          return GL_LUMINANCE;
  56       case GL_LUMINANCE_ALPHA:
  57       case GL_LUMINANCE4_ALPHA4:
  58       case GL_LUMINANCE6_ALPHA2:
  59       case GL_LUMINANCE8_ALPHA8:
  60       case GL_LUMINANCE12_ALPHA4:
  61       case GL_LUMINANCE12_ALPHA12:
  62       case GL_LUMINANCE16_ALPHA16:
  63          return GL_LUMINANCE_ALPHA;
  64       case GL_INTENSITY:
  65       case GL_INTENSITY4:
  66       case GL_INTENSITY8:
  67       case GL_INTENSITY12:
  68       case GL_INTENSITY16:
  69          return GL_INTENSITY;
  70       case GL_RGB:
  71       case GL_R3_G3_B2:
  72       case GL_RGB4:
  73       case GL_RGB5:
  74       case GL_RGB8:
  75       case GL_RGB10:
  76       case GL_RGB12:
  77       case GL_RGB16:
  78          return GL_RGB;
  79       case GL_RGBA:
  80       case GL_RGBA2:
  81       case GL_RGBA4:
  82       case GL_RGB5_A1:
  83       case GL_RGBA8:
  84       case GL_RGB10_A2:
  85       case GL_RGBA12:
  86       case GL_RGBA16:
  87          return GL_RGBA;
  88       default:
  89          return -1;  /* error */
  90    }
  91 }
  92
  93
  94
  95 /**
  96  * Examine table's format and set the component sizes accordingly.
  97  */
  98 static void
  99 set_component_sizes( struct gl_color_table *table )
 100 {
 101    /* assuming the ubyte table */
 102    const GLubyte sz = 8;
 103
 104    switch (table->_BaseFormat) {
 105       case GL_ALPHA:
 106          table->RedSize = 0;
 107          table->GreenSize = 0;
 108          table->BlueSize = 0;
 109          table->AlphaSize = sz;
 110          table->IntensitySize = 0;
 111          table->LuminanceSize = 0;
 112          break;
 113       case GL_LUMINANCE:
 114          table->RedSize = 0;
 115          table->GreenSize = 0;
 116          table->BlueSize = 0;
 117          table->AlphaSize = 0;
 118          table->IntensitySize = 0;
 119          table->LuminanceSize = sz;
 120          break;
 121       case GL_LUMINANCE_ALPHA:
 122          table->RedSize = 0;
 123          table->GreenSize = 0;
 124          table->BlueSize = 0;
 125          table->AlphaSize = sz;
 126          table->IntensitySize = 0;
 127          table->LuminanceSize = sz;
 128          break;
 129       case GL_INTENSITY:
 130          table->RedSize = 0;
 131          table->GreenSize = 0;
 132          table->BlueSize = 0;
 133          table->AlphaSize = 0;
 134          table->IntensitySize = sz;
 135          table->LuminanceSize = 0;
 136          break;
 137       case GL_RGB:
 138          table->RedSize = sz;
 139          table->GreenSize = sz;
 140          table->BlueSize = sz;
 141          table->AlphaSize = 0;
 142          table->IntensitySize = 0;
 143          table->LuminanceSize = 0;
 144          break;
 145       case GL_RGBA:
 146          table->RedSize = sz;
 147          table->GreenSize = sz;
 148          table->BlueSize = sz;
 149          table->AlphaSize = sz;
 150          table->IntensitySize = 0;
 151          table->LuminanceSize = 0;
 152          break;
 153       default:
 154          _mesa_problem(NULL, "unexpected format in set_component_sizes");
 155    }
 156 }
 157
 158
 159
 160 /**
 161  * Update/replace all or part of a color table.  Helper function
 162  * used by _mesa_ColorTable() and _mesa_ColorSubTable().
 163  * The table->Table buffer should already be allocated.
 164  * \param start first entry to update
 165  * \param count number of entries to update
 166  * \param format format of user-provided table data
 167  * \param type datatype of user-provided table data
 168  * \param data user-provided table data
 169  * \param [rgba]Scale - RGBA scale factors
 170  * \param [rgba]Bias - RGBA bias factors
 171  */
 172 static void
 173 store_colortable_entries(GLcontext *ctx, struct gl_color_table *table,
 174                          GLsizei start, GLsizei count,
 175                          GLenum format, GLenum type, const GLvoid *data,
 176                          GLfloat rScale, GLfloat rBias,
 177                          GLfloat gScale, GLfloat gBias,
 178                          GLfloat bScale, GLfloat bBias,
 179                          GLfloat aScale, GLfloat aBias)
 180 {
 181    if (ctx->Unpack.BufferObj->Name) {
 182       /* Get/unpack the color table data from a PBO */
 183       GLubyte *buf;
 184       if (!_mesa_validate_pbo_access(1, &ctx->Unpack, count, 1, 1,
 185                                      format, type, data)) {
 186          _mesa_error(ctx, GL_INVALID_OPERATION,
 187                      "glColor[Sub]Table(bad PBO access)");
 188          return;
 189       }
 190       buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
 191                                               GL_READ_ONLY_ARB,
 192                                               ctx->Unpack.BufferObj);
 193       if (!buf) {
 194          _mesa_error(ctx, GL_INVALID_OPERATION,
 195                      "glColor[Sub]Table(PBO mapped)");
 196          return;
 197       }
 198       data = ADD_POINTERS(buf, data);
 199    }
 200
 201
 202    {
 203       /* convert user-provided data to GLfloat values */
 204       GLfloat tempTab[MAX_COLOR_TABLE_SIZE * 4];
 205       GLfloat *tableF;
 206       GLint i;
 207
 208       _mesa_unpack_color_span_float(ctx,
 209                                     count,         /* number of pixels */
 210                                     table->_BaseFormat, /* dest format */
 211                                     tempTab,       /* dest address */
 212                                     format, type,  /* src format/type */
 213                                     data,          /* src data */
 214                                     &ctx->Unpack,
 215                                     IMAGE_CLAMP_BIT); /* transfer ops */
 216
 217       /* the destination */
 218       tableF = table->TableF;
 219
 220       /* Apply scale & bias & clamp now */
 221       switch (table->_BaseFormat) {
 222          case GL_INTENSITY:
 223             for (i = 0; i < count; i++) {
 224                GLuint j = start + i;
 225                tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F);
 226             }
 227             break;
 228          case GL_LUMINANCE:
 229             for (i = 0; i < count; i++) {
 230                GLuint j = start + i;
 231                tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F);
 232             }
 233             break;
 234          case GL_ALPHA:
 235             for (i = 0; i < count; i++) {
 236                GLuint j = start + i;
 237                tableF[j] = CLAMP(tempTab[i] * aScale + aBias, 0.0F, 1.0F);
 238             }
 239             break;
 240          case GL_LUMINANCE_ALPHA:
 241             for (i = 0; i < count; i++) {
 242                GLuint j = start + i;
 243                tableF[j*2+0] = CLAMP(tempTab[i*2+0] * rScale + rBias, 0.0F, 1.0F);
 244                tableF[j*2+1] = CLAMP(tempTab[i*2+1] * aScale + aBias, 0.0F, 1.0F);
 245             }
 246             break;
 247          case GL_RGB:
 248             for (i = 0; i < count; i++) {
 249                GLuint j = start + i;
 250                tableF[j*3+0] = CLAMP(tempTab[i*3+0] * rScale + rBias, 0.0F, 1.0F);
 251                tableF[j*3+1] = CLAMP(tempTab[i*3+1] * gScale + gBias, 0.0F, 1.0F);
 252                tableF[j*3+2] = CLAMP(tempTab[i*3+2] * bScale + bBias, 0.0F, 1.0F);
 253             }
 254             break;
 255          case GL_RGBA:
 256             for (i = 0; i < count; i++) {
 257                GLuint j = start + i;
 258                tableF[j*4+0] = CLAMP(tempTab[i*4+0] * rScale + rBias, 0.0F, 1.0F);
 259                tableF[j*4+1] = CLAMP(tempTab[i*4+1] * gScale + gBias, 0.0F, 1.0F);
 260                tableF[j*4+2] = CLAMP(tempTab[i*4+2] * bScale + bBias, 0.0F, 1.0F);
 261                tableF[j*4+3] = CLAMP(tempTab[i*4+3] * aScale + aBias, 0.0F, 1.0F);
 262             }
 263             break;
 264          default:
 265             _mesa_problem(ctx, "Bad format in store_colortable_entries");
 266             return;
 267          }
 268    }
 269
 270    /* update the ubyte table */
 271    {
 272       const GLint comps = _mesa_components_in_format(table->_BaseFormat);
 273       const GLfloat *tableF = table->TableF + start * comps;
 274       GLubyte *tableUB = table->TableUB + start * comps;
 275       GLint i;
 276       for (i = 0; i < count * comps; i++) {
 277          CLAMPED_FLOAT_TO_UBYTE(tableUB[i], tableF[i]);
 278       }
 279    }
 280
 281    if (ctx->Unpack.BufferObj->Name) {
 282       ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
 283                               ctx->Unpack.BufferObj);
 284    }
 285 }
 286
 287
 288
 289 void GLAPIENTRY
 290 _mesa_ColorTable( GLenum target, GLenum internalFormat,
 291                   GLsizei width, GLenum format, GLenum type,
 292                   const GLvoid *data )
 293 {
 294    GET_CURRENT_CONTEXT(ctx);
 295    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 296    struct gl_texture_object *texObj = NULL;
 297    struct gl_color_table *table = NULL;
 298    GLboolean proxy = GL_FALSE;
 299    GLint baseFormat;
 300    GLfloat rScale = 1.0, gScale = 1.0, bScale = 1.0, aScale = 1.0;
 301    GLfloat rBias  = 0.0, gBias  = 0.0, bBias  = 0.0, aBias  = 0.0;
 302    GLint comps;
 303    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex */
 304
 305    switch (target) {
 306       case GL_TEXTURE_1D:
 307          texObj = texUnit->Current1D;
 308          table = &texObj->Palette;
 309          break;
 310       case GL_TEXTURE_2D:
 311          texObj = texUnit->Current2D;
 312          table = &texObj->Palette;
 313          break;
 314       case GL_TEXTURE_3D:
 315          texObj = texUnit->Current3D;
 316          table = &texObj->Palette;
 317          break;
 318       case GL_TEXTURE_CUBE_MAP_ARB:
 319          if (!ctx->Extensions.ARB_texture_cube_map) {
 320             _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
 321             return;
 322          }
 323          texObj = texUnit->CurrentCubeMap;
 324          table = &texObj->Palette;
 325          break;
 326       case GL_PROXY_TEXTURE_1D:
 327          texObj = ctx->Texture.Proxy1D;
 328          table = &texObj->Palette;
 329          proxy = GL_TRUE;
 330          break;
 331       case GL_PROXY_TEXTURE_2D:
 332          texObj = ctx->Texture.Proxy2D;
 333          table = &texObj->Palette;
 334          proxy = GL_TRUE;
 335          break;
 336       case GL_PROXY_TEXTURE_3D:
 337          texObj = ctx->Texture.Proxy3D;
 338          table = &texObj->Palette;
 339          proxy = GL_TRUE;
 340          break;
 341       case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
 342          if (!ctx->Extensions.ARB_texture_cube_map) {
 343             _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
 344             return;
 345          }
 346          texObj = ctx->Texture.ProxyCubeMap;
 347          table = &texObj->Palette;
 348          break;
 349       case GL_SHARED_TEXTURE_PALETTE_EXT:
 350          table = &ctx->Texture.Palette;
 351          break;
 352       case GL_COLOR_TABLE:
 353          table = &ctx->ColorTable;
 354          rScale = ctx->Pixel.ColorTableScale[0];
 355          gScale = ctx->Pixel.ColorTableScale[1];
 356          bScale = ctx->Pixel.ColorTableScale[2];
 357          aScale = ctx->Pixel.ColorTableScale[3];
 358          rBias = ctx->Pixel.ColorTableBias[0];
 359          gBias = ctx->Pixel.ColorTableBias[1];
 360          bBias = ctx->Pixel.ColorTableBias[2];
 361          aBias = ctx->Pixel.ColorTableBias[3];
 362          break;
 363       case GL_PROXY_COLOR_TABLE:
 364          table = &ctx->ProxyColorTable;
 365          proxy = GL_TRUE;
 366          break;
 367       case GL_TEXTURE_COLOR_TABLE_SGI:
 368          if (!ctx->Extensions.SGI_texture_color_table) {
 369             _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
 370             return;
 371          }
 372          table = &(texUnit->ColorTable);
 373          rScale = ctx->Pixel.TextureColorTableScale[0];
 374          gScale = ctx->Pixel.TextureColorTableScale[1];
 375          bScale = ctx->Pixel.TextureColorTableScale[2];
 376          aScale = ctx->Pixel.TextureColorTableScale[3];
 377          rBias = ctx->Pixel.TextureColorTableBias[0];
 378          gBias = ctx->Pixel.TextureColorTableBias[1];
 379          bBias = ctx->Pixel.TextureColorTableBias[2];
 380          aBias = ctx->Pixel.TextureColorTableBias[3];
 381          break;
 382       case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:
 383          if (!ctx->Extensions.SGI_texture_color_table) {
 384             _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
 385             return;
 386          }
 387          table = &(texUnit->ProxyColorTable);
 388          proxy = GL_TRUE;
 389          break;
 390       case GL_POST_CONVOLUTION_COLOR_TABLE:
 391          table = &ctx->PostConvolutionColorTable;
 392          rScale = ctx->Pixel.PCCTscale[0];
 393          gScale = ctx->Pixel.PCCTscale[1];
 394          bScale = ctx->Pixel.PCCTscale[2];
 395          aScale = ctx->Pixel.PCCTscale[3];
 396          rBias = ctx->Pixel.PCCTbias[0];
 397          gBias = ctx->Pixel.PCCTbias[1];
 398          bBias = ctx->Pixel.PCCTbias[2];
 399          aBias = ctx->Pixel.PCCTbias[3];
 400          break;
 401       case GL_PROXY_POST_CONVOLUTION_COLOR_TABLE:
 402          table = &ctx->ProxyPostConvolutionColorTable;
 403          proxy = GL_TRUE;
 404          break;
 405       case GL_POST_COLOR_MATRIX_COLOR_TABLE:
 406          table = &ctx->PostColorMatrixColorTable;
 407          rScale = ctx->Pixel.PCMCTscale[0];
 408          gScale = ctx->Pixel.PCMCTscale[1];
 409          bScale = ctx->Pixel.PCMCTscale[2];
 410          aScale = ctx->Pixel.PCMCTscale[3];
 411          rBias = ctx->Pixel.PCMCTbias[0];
 412          gBias = ctx->Pixel.PCMCTbias[1];
 413          bBias = ctx->Pixel.PCMCTbias[2];
 414          aBias = ctx->Pixel.PCMCTbias[3];
 415          break;
 416       case GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE:
 417          table = &ctx->ProxyPostColorMatrixColorTable;
 418          proxy = GL_TRUE;
 419          break;
 420       default:
 421          _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
 422          return;
 423    }
 424
 425    assert(table);
 426
 427    if (!_mesa_is_legal_format_and_type(ctx, format, type) ||
 428        format == GL_INTENSITY) {
 429       _mesa_error(ctx, GL_INVALID_OPERATION, "glColorTable(format or type)");
 430       return;
 431    }
 432
 433    baseFormat = base_colortab_format(internalFormat);
 434    if (baseFormat < 0) {
 435       _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(internalFormat)");
 436       return;
 437    }
 438
 439    if (width < 0 || (width != 0 && _mesa_bitcount(width) != 1)) {
 440       /* error */
 441       if (proxy) {
 442          table->Size = 0;
 443          table->InternalFormat = (GLenum) 0;
 444          table->_BaseFormat = (GLenum) 0;
 445       }
 446       else {
 447          _mesa_error(ctx, GL_INVALID_VALUE, "glColorTable(width=%d)", width);
 448       }
 449       return;
 450    }
 451
 452    if (width > (GLsizei) ctx->Const.MaxColorTableSize) {
 453       if (proxy) {
 454          table->Size = 0;
 455          table->InternalFormat = (GLenum) 0;
 456          table->_BaseFormat = (GLenum) 0;
 457       }
 458       else {
 459          _mesa_error(ctx, GL_TABLE_TOO_LARGE, "glColorTable(width)");
 460       }
 461       return;
 462    }
 463
 464    table->Size = width;
 465    table->InternalFormat = internalFormat;
 466    table->_BaseFormat = (GLenum) baseFormat;
 467
 468    comps = _mesa_components_in_format(table->_BaseFormat);
 469    assert(comps > 0);  /* error should have been caught sooner */
 470
 471    if (!proxy) {
 472       _mesa_free_colortable_data(table);
 473
 474       if (width > 0) {
 475          table->TableF = _mesa_malloc(comps * width * sizeof(GLfloat));
 476          table->TableUB = _mesa_malloc(comps * width * sizeof(GLubyte));
 477
 478          if (!table->TableF || !table->TableUB) {
 479             _mesa_error(ctx, GL_OUT_OF_MEMORY, "glColorTable");
 480             return;
 481          }
 482
 483          store_colortable_entries(ctx, table,
 484                                   0, width,  /* start, count */
 485                                   format, type, data,
 486                                   rScale, rBias,
 487                                   gScale, gBias,
 488                                   bScale, bBias,
 489                                   aScale, aBias);
 490       }
 491    } /* proxy */
 492
 493    /* do this after the table's Type and Format are set */
 494    set_component_sizes(table);
 495
 496    if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) {
 497       /* texture object palette, texObj==NULL means the shared palette */
 498       if (ctx->Driver.UpdateTexturePalette) {
 499          (*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
 500       }
 501    }
 502
 503    ctx->NewState |= _NEW_PIXEL;
 504 }
 505
 506
 507
 508 void GLAPIENTRY
 509 _mesa_ColorSubTable( GLenum target, GLsizei start,
 510                      GLsizei count, GLenum format, GLenum type,
 511                      const GLvoid *data )
 512 {
 513    GET_CURRENT_CONTEXT(ctx);
 514    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 515    struct gl_texture_object *texObj = NULL;
 516    struct gl_color_table *table = NULL;
 517    GLfloat rScale = 1.0, gScale = 1.0, bScale = 1.0, aScale = 1.0;
 518    GLfloat rBias  = 0.0, gBias  = 0.0, bBias  = 0.0, aBias  = 0.0;
 519    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 520
 521    switch (target) {
 522       case GL_TEXTURE_1D:
 523          texObj = texUnit->Current1D;
 524          table = &texObj->Palette;
 525          break;
 526       case GL_TEXTURE_2D:
 527          texObj = texUnit->Current2D;
 528          table = &texObj->Palette;
 529          break;
 530       case GL_TEXTURE_3D:
 531          texObj = texUnit->Current3D;
 532          table = &texObj->Palette;
 533          break;
 534       case GL_TEXTURE_CUBE_MAP_ARB:
 535          if (!ctx->Extensions.ARB_texture_cube_map) {
 536             _mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");
 537             return;
 538          }
 539          texObj = texUnit->CurrentCubeMap;
 540          table = &texObj->Palette;
 541          break;
 542       case GL_SHARED_TEXTURE_PALETTE_EXT:
 543          table = &ctx->Texture.Palette;
 544          break;
 545       case GL_COLOR_TABLE:
 546          table = &ctx->ColorTable;
 547          rScale = ctx->Pixel.ColorTableScale[0];
 548          gScale = ctx->Pixel.ColorTableScale[1];
 549          bScale = ctx->Pixel.ColorTableScale[2];
 550          aScale = ctx->Pixel.ColorTableScale[3];
 551          rBias = ctx->Pixel.ColorTableBias[0];
 552          gBias = ctx->Pixel.ColorTableBias[1];
 553          bBias = ctx->Pixel.ColorTableBias[2];
 554          aBias = ctx->Pixel.ColorTableBias[3];
 555          break;
 556       case GL_TEXTURE_COLOR_TABLE_SGI:
 557          if (!ctx->Extensions.SGI_texture_color_table) {
 558             _mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");
 559             return;
 560          }
 561          table = &(texUnit->ColorTable);
 562          rScale = ctx->Pixel.TextureColorTableScale[0];
 563          gScale = ctx->Pixel.TextureColorTableScale[1];
 564          bScale = ctx->Pixel.TextureColorTableScale[2];
 565          aScale = ctx->Pixel.TextureColorTableScale[3];
 566          rBias = ctx->Pixel.TextureColorTableBias[0];
 567          gBias = ctx->Pixel.TextureColorTableBias[1];
 568          bBias = ctx->Pixel.TextureColorTableBias[2];
 569          aBias = ctx->Pixel.TextureColorTableBias[3];
 570          break;
 571       case GL_POST_CONVOLUTION_COLOR_TABLE:
 572          table = &ctx->PostConvolutionColorTable;
 573          rScale = ctx->Pixel.PCCTscale[0];
 574          gScale = ctx->Pixel.PCCTscale[1];
 575          bScale = ctx->Pixel.PCCTscale[2];
 576          aScale = ctx->Pixel.PCCTscale[3];
 577          rBias = ctx->Pixel.PCCTbias[0];
 578          gBias = ctx->Pixel.PCCTbias[1];
 579          bBias = ctx->Pixel.PCCTbias[2];
 580          aBias = ctx->Pixel.PCCTbias[3];
 581          break;
 582       case GL_POST_COLOR_MATRIX_COLOR_TABLE:
 583          table = &ctx->PostColorMatrixColorTable;
 584          rScale = ctx->Pixel.PCMCTscale[0];
 585          gScale = ctx->Pixel.PCMCTscale[1];
 586          bScale = ctx->Pixel.PCMCTscale[2];
 587          aScale = ctx->Pixel.PCMCTscale[3];
 588          rBias = ctx->Pixel.PCMCTbias[0];
 589          gBias = ctx->Pixel.PCMCTbias[1];
 590          bBias = ctx->Pixel.PCMCTbias[2];
 591          aBias = ctx->Pixel.PCMCTbias[3];
 592          break;
 593       default:
 594          _mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");
 595          return;
 596    }
 597
 598    assert(table);
 599
 600    if (!_mesa_is_legal_format_and_type(ctx, format, type) ||
 601        format == GL_INTENSITY) {
 602       _mesa_error(ctx, GL_INVALID_OPERATION, "glColorSubTable(format or type)");
 603       return;
 604    }
 605
 606    if (count < 1) {
 607       _mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");
 608       return;
 609    }
 610
 611    /* error should have been caught sooner */
 612    assert(_mesa_components_in_format(table->_BaseFormat) > 0);
 613
 614    if (start + count > (GLint) table->Size) {
 615       _mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");
 616       return;
 617    }
 618
 619    if (!table->TableF || !table->TableUB) {
 620       /* a GL_OUT_OF_MEMORY error would have been recorded previously */
 621       return;
 622    }
 623
 624    store_colortable_entries(ctx, table, start, count,
 625                             format, type, data,
 626                             rScale, rBias,
 627                             gScale, gBias,
 628                             bScale, bBias,
 629                             aScale, aBias);
 630
 631    if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) {
 632       /* per-texture object palette */
 633       if (ctx->Driver.UpdateTexturePalette) {
 634          (*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
 635       }
 636    }
 637
 638    ctx->NewState |= _NEW_PIXEL;
 639 }
 640
 641
 642
 643 void GLAPIENTRY
 644 _mesa_CopyColorTable(GLenum target, GLenum internalformat,
 645                      GLint x, GLint y, GLsizei width)
 646 {
 647    GET_CURRENT_CONTEXT(ctx);
 648    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 649
 650    /* Select buffer to read from */
 651    ctx->Driver.CopyColorTable( ctx, target, internalformat, x, y, width );
 652 }
 653
 654
 655
 656 void GLAPIENTRY
 657 _mesa_CopyColorSubTable(GLenum target, GLsizei start,
 658                         GLint x, GLint y, GLsizei width)
 659 {
 660    GET_CURRENT_CONTEXT(ctx);
 661    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 662
 663    ctx->Driver.CopyColorSubTable( ctx, target, start, x, y, width );
 664 }
 665
 666
 667
 668 void GLAPIENTRY
 669 _mesa_GetColorTable( GLenum target, GLenum format,
 670                      GLenum type, GLvoid *data )
 671 {
 672    GET_CURRENT_CONTEXT(ctx);
 673    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 674    struct gl_color_table *table = NULL;
 675    GLfloat rgba[MAX_COLOR_TABLE_SIZE][4];
 676    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 677
 678    if (ctx->NewState) {
 679       _mesa_update_state(ctx);
 680    }
 681
 682    switch (target) {
 683       case GL_TEXTURE_1D:
 684          table = &texUnit->Current1D->Palette;
 685          break;
 686       case GL_TEXTURE_2D:
 687          table = &texUnit->Current2D->Palette;
 688          break;
 689       case GL_TEXTURE_3D:
 690          table = &texUnit->Current3D->Palette;
 691          break;
 692       case GL_TEXTURE_CUBE_MAP_ARB:
 693          if (!ctx->Extensions.ARB_texture_cube_map) {
 694             _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTable(target)");
 695             return;
 696          }
 697          table = &texUnit->CurrentCubeMap->Palette;
 698          break;
 699       case GL_SHARED_TEXTURE_PALETTE_EXT:
 700          table = &ctx->Texture.Palette;
 701          break;
 702       case GL_COLOR_TABLE:
 703          table = &ctx->ColorTable;
 704          break;
 705       case GL_TEXTURE_COLOR_TABLE_SGI:
 706          if (!ctx->Extensions.SGI_texture_color_table) {
 707             _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTable(target)");
 708             return;
 709          }
 710          table = &(texUnit->ColorTable);
 711          break;
 712       case GL_POST_CONVOLUTION_COLOR_TABLE:
 713          table = &ctx->PostConvolutionColorTable;
 714          break;
 715       case GL_POST_COLOR_MATRIX_COLOR_TABLE:
 716          table = &ctx->PostColorMatrixColorTable;
 717          break;
 718       default:
 719          _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTable(target)");
 720          return;
 721    }
 722
 723    ASSERT(table);
 724
 725    switch (table->_BaseFormat) {
 726    case GL_ALPHA:
 727       {
 728          GLuint i;
 729          for (i = 0; i < table->Size; i++) {
 730             rgba[i][RCOMP] = 0;
 731             rgba[i][GCOMP] = 0;
 732             rgba[i][BCOMP] = 0;
 733             rgba[i][ACOMP] = table->TableF[i];
 734          }
 735       }
 736       break;
 737    case GL_LUMINANCE:
 738       {
 739          GLuint i;
 740          for (i = 0; i < table->Size; i++) {
 741             rgba[i][RCOMP] =
 742             rgba[i][GCOMP] =
 743             rgba[i][BCOMP] = table->TableF[i];
 744             rgba[i][ACOMP] = 1.0F;
 745          }
 746       }
 747       break;
 748    case GL_LUMINANCE_ALPHA:
 749       {
 750          GLuint i;
 751          for (i = 0; i < table->Size; i++) {
 752             rgba[i][RCOMP] =
 753             rgba[i][GCOMP] =
 754             rgba[i][BCOMP] = table->TableF[i*2+0];
 755             rgba[i][ACOMP] = table->TableF[i*2+1];
 756          }
 757       }
 758       break;
 759    case GL_INTENSITY:
 760       {
 761          GLuint i;
 762          for (i = 0; i < table->Size; i++) {
 763             rgba[i][RCOMP] =
 764             rgba[i][GCOMP] =
 765             rgba[i][BCOMP] =
 766             rgba[i][ACOMP] = table->TableF[i];
 767          }
 768       }
 769       break;
 770    case GL_RGB:
 771       {
 772          GLuint i;
 773          for (i = 0; i < table->Size; i++) {
 774             rgba[i][RCOMP] = table->TableF[i*3+0];
 775             rgba[i][GCOMP] = table->TableF[i*3+1];
 776             rgba[i][BCOMP] = table->TableF[i*3+2];
 777             rgba[i][ACOMP] = 1.0F;
 778          }
 779       }
 780       break;
 781    case GL_RGBA:
 782       _mesa_memcpy(rgba, table->TableF, 4 * table->Size * sizeof(GLfloat));
 783       break;
 784    default:
 785       _mesa_problem(ctx, "bad table format in glGetColorTable");
 786       return;
 787    }
 788
 789    if (ctx->Pack.BufferObj->Name) {
 790       /* pack color table into PBO */
 791       GLubyte *buf;
 792       if (!_mesa_validate_pbo_access(1, &ctx->Pack, table->Size, 1, 1,
 793                                      format, type, data)) {
 794          _mesa_error(ctx, GL_INVALID_OPERATION,
 795                      "glGetColorTable(invalid PBO access)");
 796          return;
 797       }
 798       buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
 799                                               GL_WRITE_ONLY_ARB,
 800                                               ctx->Pack.BufferObj);
 801       if (!buf) {
 802          /* buffer is already mapped - that's an error */
 803          _mesa_error(ctx, GL_INVALID_OPERATION,
 804                      "glGetColorTable(PBO is mapped)");
 805          return;
 806       }
 807       data = ADD_POINTERS(buf, data);
 808    }
 809
 810    _mesa_pack_rgba_span_float(ctx, table->Size, (const GLfloat (*)[4]) rgba,
 811                         format, type, data, &ctx->Pack, GL_FALSE);
 812
 813    if (ctx->Pack.BufferObj->Name) {
 814       ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
 815                               ctx->Pack.BufferObj);
 816    }
 817 }
 818
 819
 820
 821 void GLAPIENTRY
 822 _mesa_ColorTableParameterfv(GLenum target, GLenum pname, const GLfloat *params)
 823 {
 824    GET_CURRENT_CONTEXT(ctx);
 825    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 826
 827    switch (target) {
 828       case GL_COLOR_TABLE_SGI:
 829          if (pname == GL_COLOR_TABLE_SCALE_SGI) {
 830             ctx->Pixel.ColorTableScale[0] = params[0];
 831             ctx->Pixel.ColorTableScale[1] = params[1];
 832             ctx->Pixel.ColorTableScale[2] = params[2];
 833             ctx->Pixel.ColorTableScale[3] = params[3];
 834          }
 835          else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
 836             ctx->Pixel.ColorTableBias[0] = params[0];
 837             ctx->Pixel.ColorTableBias[1] = params[1];
 838             ctx->Pixel.ColorTableBias[2] = params[2];
 839             ctx->Pixel.ColorTableBias[3] = params[3];
 840          }
 841          else {
 842             _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameterfv(pname)");
 843             return;
 844          }
 845          break;
 846       case GL_TEXTURE_COLOR_TABLE_SGI:
 847          if (!ctx->Extensions.SGI_texture_color_table) {
 848             _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameter(target)");
 849             return;
 850          }
 851          if (pname == GL_COLOR_TABLE_SCALE_SGI) {
 852             ctx->Pixel.TextureColorTableScale[0] = params[0];
 853             ctx->Pixel.TextureColorTableScale[1] = params[1];
 854             ctx->Pixel.TextureColorTableScale[2] = params[2];
 855             ctx->Pixel.TextureColorTableScale[3] = params[3];
 856          }
 857          else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
 858             ctx->Pixel.TextureColorTableBias[0] = params[0];
 859             ctx->Pixel.TextureColorTableBias[1] = params[1];
 860             ctx->Pixel.TextureColorTableBias[2] = params[2];
 861             ctx->Pixel.TextureColorTableBias[3] = params[3];
 862          }
 863          else {
 864             _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameterfv(pname)");
 865             return;
 866          }
 867          break;
 868       case GL_POST_CONVOLUTION_COLOR_TABLE_SGI:
 869          if (pname == GL_COLOR_TABLE_SCALE_SGI) {
 870             ctx->Pixel.PCCTscale[0] = params[0];
 871             ctx->Pixel.PCCTscale[1] = params[1];
 872             ctx->Pixel.PCCTscale[2] = params[2];
 873             ctx->Pixel.PCCTscale[3] = params[3];
 874          }
 875          else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
 876             ctx->Pixel.PCCTbias[0] = params[0];
 877             ctx->Pixel.PCCTbias[1] = params[1];
 878             ctx->Pixel.PCCTbias[2] = params[2];
 879             ctx->Pixel.PCCTbias[3] = params[3];
 880          }
 881          else {
 882             _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameterfv(pname)");
 883             return;
 884          }
 885          break;
 886       case GL_POST_COLOR_MATRIX_COLOR_TABLE_SGI:
 887          if (pname == GL_COLOR_TABLE_SCALE_SGI) {
 888             ctx->Pixel.PCMCTscale[0] = params[0];
 889             ctx->Pixel.PCMCTscale[1] = params[1];
 890             ctx->Pixel.PCMCTscale[2] = params[2];
 891             ctx->Pixel.PCMCTscale[3] = params[3];
 892          }
 893          else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
 894             ctx->Pixel.PCMCTbias[0] = params[0];
 895             ctx->Pixel.PCMCTbias[1] = params[1];
 896             ctx->Pixel.PCMCTbias[2] = params[2];
 897             ctx->Pixel.PCMCTbias[3] = params[3];
 898          }
 899          else {
 900             _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameterfv(pname)");
 901             return;
 902          }
 903          break;
 904       default:
 905          _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameter(target)");
 906          return;
 907    }
 908
 909    ctx->NewState |= _NEW_PIXEL;
 910 }
 911
 912
 913
 914 void GLAPIENTRY
 915 _mesa_ColorTableParameteriv(GLenum target, GLenum pname, const GLint *params)
 916 {
 917    GLfloat fparams[4];
 918    if (pname == GL_COLOR_TABLE_SGI ||
 919        pname == GL_TEXTURE_COLOR_TABLE_SGI ||
 920        pname == GL_POST_CONVOLUTION_COLOR_TABLE_SGI ||
 921        pname == GL_POST_COLOR_MATRIX_COLOR_TABLE_SGI) {
 922       /* four values */
 923       fparams[0] = (GLfloat) params[0];
 924       fparams[1] = (GLfloat) params[1];
 925       fparams[2] = (GLfloat) params[2];
 926       fparams[3] = (GLfloat) params[3];
 927    }
 928    else {
 929       /* one values */
 930       fparams[0] = (GLfloat) params[0];
 931    }
 932    _mesa_ColorTableParameterfv(target, pname, fparams);
 933 }
 934
 935
 936
 937 void GLAPIENTRY
 938 _mesa_GetColorTableParameterfv( GLenum target, GLenum pname, GLfloat *params )
 939 {
 940    GET_CURRENT_CONTEXT(ctx);
 941    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 942    struct gl_color_table *table = NULL;
 943    ASSERT_OUTSIDE_BEGIN_END(ctx);
 944
 945    switch (target) {
 946       case GL_TEXTURE_1D:
 947          table = &texUnit->Current1D->Palette;
 948          break;
 949       case GL_TEXTURE_2D:
 950          table = &texUnit->Current2D->Palette;
 951          break;
 952       case GL_TEXTURE_3D:
 953          table = &texUnit->Current3D->Palette;
 954          break;
 955       case GL_TEXTURE_CUBE_MAP_ARB:
 956          if (!ctx->Extensions.ARB_texture_cube_map) {
 957             _mesa_error(ctx, GL_INVALID_ENUM,
 958                         "glGetColorTableParameterfv(target)");
 959             return;
 960          }
 961          table = &texUnit->CurrentCubeMap->Palette;
 962          break;
 963       case GL_PROXY_TEXTURE_1D:
 964          table = &ctx->Texture.Proxy1D->Palette;
 965          break;
 966       case GL_PROXY_TEXTURE_2D:
 967          table = &ctx->Texture.Proxy2D->Palette;
 968          break;
 969       case GL_PROXY_TEXTURE_3D:
 970          table = &ctx->Texture.Proxy3D->Palette;
 971          break;
 972       case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
 973          if (!ctx->Extensions.ARB_texture_cube_map) {
 974             _mesa_error(ctx, GL_INVALID_ENUM,
 975                         "glGetColorTableParameterfv(target)");
 976             return;
 977          }
 978          table = &ctx->Texture.ProxyCubeMap->Palette;
 979          break;
 980       case GL_SHARED_TEXTURE_PALETTE_EXT:
 981          table = &ctx->Texture.Palette;
 982          break;
 983       case GL_COLOR_TABLE:
 984          table = &ctx->ColorTable;
 985          if (pname == GL_COLOR_TABLE_SCALE_SGI) {
 986             params[0] = ctx->Pixel.ColorTableScale[0];
 987             params[1] = ctx->Pixel.ColorTableScale[1];
 988             params[2] = ctx->Pixel.ColorTableScale[2];
 989             params[3] = ctx->Pixel.ColorTableScale[3];
 990             return;
 991          }
 992          else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
 993             params[0] = ctx->Pixel.ColorTableBias[0];
 994             params[1] = ctx->Pixel.ColorTableBias[1];
 995             params[2] = ctx->Pixel.ColorTableBias[2];
 996             params[3] = ctx->Pixel.ColorTableBias[3];
 997             return;
 998          }
 999          break;
1000       case GL_PROXY_COLOR_TABLE:
1001          table = &ctx->ProxyColorTable;
1002          break;
1003       case GL_TEXTURE_COLOR_TABLE_SGI:
1004          if (!ctx->Extensions.SGI_texture_color_table) {
1005             _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
1006             return;
1007          }
1008          table = &(texUnit->ColorTable);
1009          if (pname == GL_COLOR_TABLE_SCALE_SGI) {
1010             params[0] = ctx->Pixel.TextureColorTableScale[0];
1011             params[1] = ctx->Pixel.TextureColorTableScale[1];
1012             params[2] = ctx->Pixel.TextureColorTableScale[2];
1013             params[3] = ctx->Pixel.TextureColorTableScale[3];
1014             return;
1015          }
1016          else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
1017             params[0] = ctx->Pixel.TextureColorTableBias[0];
1018             params[1] = ctx->Pixel.TextureColorTableBias[1];
1019             params[2] = ctx->Pixel.TextureColorTableBias[2];
1020             params[3] = ctx->Pixel.TextureColorTableBias[3];
1021             return;
1022          }
1023          break;
1024       case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:
1025          if (!ctx->Extensions.SGI_texture_color_table) {
1026             _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
1027             return;
1028          }
1029          table = &(texUnit->ProxyColorTable);
1030          break;
1031       case GL_POST_CONVOLUTION_COLOR_TABLE:
1032          table = &ctx->PostConvolutionColorTable;
1033          if (pname == GL_COLOR_TABLE_SCALE_SGI) {
1034             params[0] = ctx->Pixel.PCCTscale[0];
1035             params[1] = ctx->Pixel.PCCTscale[1];
1036             params[2] = ctx->Pixel.PCCTscale[2];
1037             params[3] = ctx->Pixel.PCCTscale[3];
1038             return;
1039          }
1040          else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
1041             params[0] = ctx->Pixel.PCCTbias[0];
1042             params[1] = ctx->Pixel.PCCTbias[1];
1043             params[2] = ctx->Pixel.PCCTbias[2];
1044             params[3] = ctx->Pixel.PCCTbias[3];
1045             return;
1046          }
1047          break;
1048       case GL_PROXY_POST_CONVOLUTION_COLOR_TABLE:
1049          table = &ctx->ProxyPostConvolutionColorTable;
1050          break;
1051       case GL_POST_COLOR_MATRIX_COLOR_TABLE:
1052          table = &ctx->PostColorMatrixColorTable;
1053          if (pname == GL_COLOR_TABLE_SCALE_SGI) {
1054             params[0] = ctx->Pixel.PCMCTscale[0];
1055             params[1] = ctx->Pixel.PCMCTscale[1];
1056             params[2] = ctx->Pixel.PCMCTscale[2];
1057             params[3] = ctx->Pixel.PCMCTscale[3];
1058             return;
1059          }
1060          else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
1061             params[0] = ctx->Pixel.PCMCTbias[0];
1062             params[1] = ctx->Pixel.PCMCTbias[1];
1063             params[2] = ctx->Pixel.PCMCTbias[2];
1064             params[3] = ctx->Pixel.PCMCTbias[3];
1065             return;
1066          }
1067          break;
1068       case GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE:
1069          table = &ctx->ProxyPostColorMatrixColorTable;
1070          break;
1071       default:
1072          _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameterfv(target)");
1073          return;
1074    }
1075
1076    assert(table);
1077
1078    switch (pname) {
1079       case GL_COLOR_TABLE_FORMAT:
1080          *params = (GLfloat) table->InternalFormat;
1081          break;
1082       case GL_COLOR_TABLE_WIDTH:
1083          *params = (GLfloat) table->Size;
1084          break;
1085       case GL_COLOR_TABLE_RED_SIZE:
1086          *params = (GLfloat) table->RedSize;
1087          break;
1088       case GL_COLOR_TABLE_GREEN_SIZE:
1089          *params = (GLfloat) table->GreenSize;
1090          break;
1091       case GL_COLOR_TABLE_BLUE_SIZE:
1092          *params = (GLfloat) table->BlueSize;
1093          break;
1094       case GL_COLOR_TABLE_ALPHA_SIZE:
1095          *params = (GLfloat) table->AlphaSize;
1096          break;
1097       case GL_COLOR_TABLE_LUMINANCE_SIZE:
1098          *params = (GLfloat) table->LuminanceSize;
1099          break;
1100       case GL_COLOR_TABLE_INTENSITY_SIZE:
1101          *params = (GLfloat) table->IntensitySize;
1102          break;
1103       default:
1104          _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameterfv(pname)" );
1105          return;
1106    }
1107 }
1108
1109
1110
1111 void GLAPIENTRY
1112 _mesa_GetColorTableParameteriv( GLenum target, GLenum pname, GLint *params )
1113 {
1114    GET_CURRENT_CONTEXT(ctx);
1115    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1116    struct gl_color_table *table = NULL;
1117    ASSERT_OUTSIDE_BEGIN_END(ctx);
1118
1119    switch (target) {
1120       case GL_TEXTURE_1D:
1121          table = &texUnit->Current1D->Palette;
1122          break;
1123       case GL_TEXTURE_2D:
1124          table = &texUnit->Current2D->Palette;
1125          break;
1126       case GL_TEXTURE_3D:
1127          table = &texUnit->Current3D->Palette;
1128          break;
1129       case GL_TEXTURE_CUBE_MAP_ARB:
1130          if (!ctx->Extensions.ARB_texture_cube_map) {
1131             _mesa_error(ctx, GL_INVALID_ENUM,
1132                         "glGetColorTableParameteriv(target)");
1133             return;
1134          }
1135          table = &texUnit->CurrentCubeMap->Palette;
1136          break;
1137       case GL_PROXY_TEXTURE_1D:
1138          table = &ctx->Texture.Proxy1D->Palette;
1139          break;
1140       case GL_PROXY_TEXTURE_2D:
1141          table = &ctx->Texture.Proxy2D->Palette;
1142          break;
1143       case GL_PROXY_TEXTURE_3D:
1144          table = &ctx->Texture.Proxy3D->Palette;
1145          break;
1146       case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
1147          if (!ctx->Extensions.ARB_texture_cube_map) {
1148             _mesa_error(ctx, GL_INVALID_ENUM,
1149                         "glGetColorTableParameteriv(target)");
1150             return;
1151          }
1152          table = &ctx->Texture.ProxyCubeMap->Palette;
1153          break;
1154       case GL_SHARED_TEXTURE_PALETTE_EXT:
1155          table = &ctx->Texture.Palette;
1156          break;
1157       case GL_COLOR_TABLE:
1158          table = &ctx->ColorTable;
1159          if (pname == GL_COLOR_TABLE_SCALE_SGI) {
1160             params[0] = (GLint) ctx->Pixel.ColorTableScale[0];
1161             params[1] = (GLint) ctx->Pixel.ColorTableScale[1];
1162             params[2] = (GLint) ctx->Pixel.ColorTableScale[2];
1163             params[3] = (GLint) ctx->Pixel.ColorTableScale[3];
1164             return;
1165          }
1166          else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
1167             params[0] = (GLint) ctx->Pixel.ColorTableBias[0];
1168             params[1] = (GLint) ctx->Pixel.ColorTableBias[1];
1169             params[2] = (GLint) ctx->Pixel.ColorTableBias[2];
1170             params[3] = (GLint) ctx->Pixel.ColorTableBias[3];
1171             return;
1172          }
1173          break;
1174       case GL_PROXY_COLOR_TABLE:
1175          table = &ctx->ProxyColorTable;
1176          break;
1177       case GL_TEXTURE_COLOR_TABLE_SGI:
1178          if (!ctx->Extensions.SGI_texture_color_table) {
1179             _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
1180             return;
1181          }
1182          table = &(texUnit->ColorTable);
1183          if (pname == GL_COLOR_TABLE_SCALE_SGI) {
1184             params[0] = (GLint) ctx->Pixel.TextureColorTableScale[0];
1185             params[1] = (GLint) ctx->Pixel.TextureColorTableScale[1];
1186             params[2] = (GLint) ctx->Pixel.TextureColorTableScale[2];
1187             params[3] = (GLint) ctx->Pixel.TextureColorTableScale[3];
1188             return;
1189          }
1190          else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
1191             params[0] = (GLint) ctx->Pixel.TextureColorTableBias[0];
1192             params[1] = (GLint) ctx->Pixel.TextureColorTableBias[1];
1193             params[2] = (GLint) ctx->Pixel.TextureColorTableBias[2];
1194             params[3] = (GLint) ctx->Pixel.TextureColorTableBias[3];
1195             return;
1196          }
1197          break;
1198       case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:
1199          if (!ctx->Extensions.SGI_texture_color_table) {
1200             _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
1201             return;
1202          }
1203          table = &(texUnit->ProxyColorTable);
1204          break;
1205       case GL_POST_CONVOLUTION_COLOR_TABLE:
1206          table = &ctx->PostConvolutionColorTable;
1207          if (pname == GL_COLOR_TABLE_SCALE_SGI) {
1208             params[0] = (GLint) ctx->Pixel.PCCTscale[0];
1209             params[1] = (GLint) ctx->Pixel.PCCTscale[1];
1210             params[2] = (GLint) ctx->Pixel.PCCTscale[2];
1211             params[3] = (GLint) ctx->Pixel.PCCTscale[3];
1212             return;
1213          }
1214          else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
1215             params[0] = (GLint) ctx->Pixel.PCCTbias[0];
1216             params[1] = (GLint) ctx->Pixel.PCCTbias[1];
1217             params[2] = (GLint) ctx->Pixel.PCCTbias[2];
1218             params[3] = (GLint) ctx->Pixel.PCCTbias[3];
1219             return;
1220          }
1221          break;
1222       case GL_PROXY_POST_CONVOLUTION_COLOR_TABLE:
1223          table = &ctx->ProxyPostConvolutionColorTable;
1224          break;
1225       case GL_POST_COLOR_MATRIX_COLOR_TABLE:
1226          table = &ctx->PostColorMatrixColorTable;
1227          if (pname == GL_COLOR_TABLE_SCALE_SGI) {
1228             params[0] = (GLint) ctx->Pixel.PCMCTscale[0];
1229             params[1] = (GLint) ctx->Pixel.PCMCTscale[1];
1230             params[2] = (GLint) ctx->Pixel.PCMCTscale[2];
1231             params[3] = (GLint) ctx->Pixel.PCMCTscale[3];
1232             return;
1233          }
1234          else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
1235             params[0] = (GLint) ctx->Pixel.PCMCTbias[0];
1236             params[1] = (GLint) ctx->Pixel.PCMCTbias[1];
1237             params[2] = (GLint) ctx->Pixel.PCMCTbias[2];
1238             params[3] = (GLint) ctx->Pixel.PCMCTbias[3];
1239             return;
1240          }
1241          break;
1242       case GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE:
1243          table = &ctx->ProxyPostColorMatrixColorTable;
1244          break;
1245       default:
1246          _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameteriv(target)");
1247          return;
1248    }
1249
1250    assert(table);
1251
1252    switch (pname) {
1253       case GL_COLOR_TABLE_FORMAT:
1254          *params = table->InternalFormat;
1255          break;
1256       case GL_COLOR_TABLE_WIDTH:
1257          *params = table->Size;
1258          break;
1259       case GL_COLOR_TABLE_RED_SIZE:
1260          *params = table->RedSize;
1261          break;
1262       case GL_COLOR_TABLE_GREEN_SIZE:
1263          *params = table->GreenSize;
1264          break;
1265       case GL_COLOR_TABLE_BLUE_SIZE:
1266          *params = table->BlueSize;
1267          break;
1268       case GL_COLOR_TABLE_ALPHA_SIZE:
1269          *params = table->AlphaSize;
1270          break;
1271       case GL_COLOR_TABLE_LUMINANCE_SIZE:
1272          *params = table->LuminanceSize;
1273          break;
1274       case GL_COLOR_TABLE_INTENSITY_SIZE:
1275          *params = table->IntensitySize;
1276          break;
1277       default:
1278          _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameteriv(pname)" );
1279          return;
1280    }
1281 }
1282
1283 /**********************************************************************/
1284 /*****                      Initialization                        *****/
1285 /**********************************************************************/
1286
1287
1288 void
1289 _mesa_init_colortable( struct gl_color_table *p )
1290 {
1291    p->TableF = NULL;
1292    p->TableUB = NULL;
1293    p->Size = 0;
1294    p->InternalFormat = GL_RGBA;
1295 }
1296
1297
1298
1299 void
1300 _mesa_free_colortable_data( struct gl_color_table *p )
1301 {
1302    if (p->TableF) {
1303       _mesa_free(p->TableF);
1304       p->TableF = NULL;
1305    }
1306    if (p->TableUB) {
1307       _mesa_free(p->TableUB);
1308       p->TableUB = NULL;
1309    }
1310 }
1311
1312
1313 /*
1314  * Initialize all colortables for a context.
1315  */
1316 void
1317 _mesa_init_colortables( GLcontext * ctx )
1318 {
1319    /* Color tables */
1320    _mesa_init_colortable(&ctx->ColorTable);
1321    _mesa_init_colortable(&ctx->ProxyColorTable);
1322    _mesa_init_colortable(&ctx->PostConvolutionColorTable);
1323    _mesa_init_colortable(&ctx->ProxyPostConvolutionColorTable);
1324    _mesa_init_colortable(&ctx->PostColorMatrixColorTable);
1325    _mesa_init_colortable(&ctx->ProxyPostColorMatrixColorTable);
1326 }
1327
1328
1329 /*
1330  * Free all colortable data for a context
1331  */
1332 void
1333 _mesa_free_colortables_data( GLcontext *ctx )
1334 {
1335    _mesa_free_colortable_data(&ctx->ColorTable);
1336    _mesa_free_colortable_data(&ctx->ProxyColorTable);
1337    _mesa_free_colortable_data(&ctx->PostConvolutionColorTable);
1338    _mesa_free_colortable_data(&ctx->ProxyPostConvolutionColorTable);
1339    _mesa_free_colortable_data(&ctx->PostColorMatrixColorTable);
1340    _mesa_free_colortable_data(&ctx->ProxyPostColorMatrixColorTable);
1341 }