src/mesa/main/colortab.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.1
   4  *
   5  * Copyright (C) 1999-2007  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 "mfeatures.h"
  33 #include "mtypes.h"
  34 #include "pack.h"
  35 #include "pbo.h"
  36 #include "state.h"
  37 #include "teximage.h"
  38 #include "texstate.h"
  39 #include "main/dispatch.h"
  40
  41
  42 #if FEATURE_colortable
  43
  44
  45 /**
  46  * Given an internalFormat token passed to glColorTable,
  47  * return the corresponding base format.
  48  * Return -1 if invalid token.
  49  */
  50 static GLint
  51 base_colortab_format( GLenum format )
  52 {
  53    switch (format) {
  54       case GL_ALPHA:
  55       case GL_ALPHA4:
  56       case GL_ALPHA8:
  57       case GL_ALPHA12:
  58       case GL_ALPHA16:
  59          return GL_ALPHA;
  60       case GL_LUMINANCE:
  61       case GL_LUMINANCE4:
  62       case GL_LUMINANCE8:
  63       case GL_LUMINANCE12:
  64       case GL_LUMINANCE16:
  65          return GL_LUMINANCE;
  66       case GL_LUMINANCE_ALPHA:
  67       case GL_LUMINANCE4_ALPHA4:
  68       case GL_LUMINANCE6_ALPHA2:
  69       case GL_LUMINANCE8_ALPHA8:
  70       case GL_LUMINANCE12_ALPHA4:
  71       case GL_LUMINANCE12_ALPHA12:
  72       case GL_LUMINANCE16_ALPHA16:
  73          return GL_LUMINANCE_ALPHA;
  74       case GL_INTENSITY:
  75       case GL_INTENSITY4:
  76       case GL_INTENSITY8:
  77       case GL_INTENSITY12:
  78       case GL_INTENSITY16:
  79          return GL_INTENSITY;
  80       case GL_RGB:
  81       case GL_R3_G3_B2:
  82       case GL_RGB4:
  83       case GL_RGB5:
  84       case GL_RGB8:
  85       case GL_RGB10:
  86       case GL_RGB12:
  87       case GL_RGB16:
  88          return GL_RGB;
  89       case GL_RGBA:
  90       case GL_RGBA2:
  91       case GL_RGBA4:
  92       case GL_RGB5_A1:
  93       case GL_RGBA8:
  94       case GL_RGB10_A2:
  95       case GL_RGBA12:
  96       case GL_RGBA16:
  97          return GL_RGBA;
  98       default:
  99          return -1;  /* error */
 100    }
 101 }
 102
 103
 104
 105 /**
 106  * Examine table's format and set the component sizes accordingly.
 107  */
 108 static void
 109 set_component_sizes( struct gl_color_table *table )
 110 {
 111    /* assuming the ubyte table */
 112    const GLubyte sz = 8;
 113
 114    switch (table->_BaseFormat) {
 115       case GL_ALPHA:
 116          table->RedSize = 0;
 117          table->GreenSize = 0;
 118          table->BlueSize = 0;
 119          table->AlphaSize = sz;
 120          table->IntensitySize = 0;
 121          table->LuminanceSize = 0;
 122          break;
 123       case GL_LUMINANCE:
 124          table->RedSize = 0;
 125          table->GreenSize = 0;
 126          table->BlueSize = 0;
 127          table->AlphaSize = 0;
 128          table->IntensitySize = 0;
 129          table->LuminanceSize = sz;
 130          break;
 131       case GL_LUMINANCE_ALPHA:
 132          table->RedSize = 0;
 133          table->GreenSize = 0;
 134          table->BlueSize = 0;
 135          table->AlphaSize = sz;
 136          table->IntensitySize = 0;
 137          table->LuminanceSize = sz;
 138          break;
 139       case GL_INTENSITY:
 140          table->RedSize = 0;
 141          table->GreenSize = 0;
 142          table->BlueSize = 0;
 143          table->AlphaSize = 0;
 144          table->IntensitySize = sz;
 145          table->LuminanceSize = 0;
 146          break;
 147       case GL_RGB:
 148          table->RedSize = sz;
 149          table->GreenSize = sz;
 150          table->BlueSize = sz;
 151          table->AlphaSize = 0;
 152          table->IntensitySize = 0;
 153          table->LuminanceSize = 0;
 154          break;
 155       case GL_RGBA:
 156          table->RedSize = sz;
 157          table->GreenSize = sz;
 158          table->BlueSize = sz;
 159          table->AlphaSize = sz;
 160          table->IntensitySize = 0;
 161          table->LuminanceSize = 0;
 162          break;
 163       default:
 164          _mesa_problem(NULL, "unexpected format in set_component_sizes");
 165    }
 166 }
 167
 168
 169
 170 /**
 171  * Update/replace all or part of a color table.  Helper function
 172  * used by _mesa_ColorTable() and _mesa_ColorSubTable().
 173  * The table->Table buffer should already be allocated.
 174  * \param start first entry to update
 175  * \param count number of entries to update
 176  * \param format format of user-provided table data
 177  * \param type datatype of user-provided table data
 178  * \param data user-provided table data
 179  * \param [rgba]Scale - RGBA scale factors
 180  * \param [rgba]Bias - RGBA bias factors
 181  */
 182 static void
 183 store_colortable_entries(struct gl_context *ctx, struct gl_color_table *table,
 184                          GLsizei start, GLsizei count,
 185                          GLenum format, GLenum type, const GLvoid *data,
 186                          GLfloat rScale, GLfloat rBias,
 187                          GLfloat gScale, GLfloat gBias,
 188                          GLfloat bScale, GLfloat bBias,
 189                          GLfloat aScale, GLfloat aBias)
 190 {
 191    data = _mesa_map_validate_pbo_source(ctx,
 192                                         1, &ctx->Unpack, count, 1, 1,
 193                                         format, type, data,
 194                                         "glColor[Sub]Table");
 195    if (!data)
 196       return;
 197
 198    {
 199       /* convert user-provided data to GLfloat values */
 200       GLfloat tempTab[MAX_COLOR_TABLE_SIZE * 4];
 201       GLfloat *tableF;
 202       GLint i;
 203
 204       _mesa_unpack_color_span_float(ctx,
 205                                     count,         /* number of pixels */
 206                                     table->_BaseFormat, /* dest format */
 207                                     tempTab,       /* dest address */
 208                                     format, type,  /* src format/type */
 209                                     data,          /* src data */
 210                                     &ctx->Unpack,
 211                                     IMAGE_CLAMP_BIT); /* transfer ops */
 212
 213       /* the destination */
 214       tableF = table->TableF;
 215
 216       /* Apply scale & bias & clamp now */
 217       switch (table->_BaseFormat) {
 218          case GL_INTENSITY:
 219             for (i = 0; i < count; i++) {
 220                GLuint j = start + i;
 221                tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F);
 222             }
 223             break;
 224          case GL_LUMINANCE:
 225             for (i = 0; i < count; i++) {
 226                GLuint j = start + i;
 227                tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F);
 228             }
 229             break;
 230          case GL_ALPHA:
 231             for (i = 0; i < count; i++) {
 232                GLuint j = start + i;
 233                tableF[j] = CLAMP(tempTab[i] * aScale + aBias, 0.0F, 1.0F);
 234             }
 235             break;
 236          case GL_LUMINANCE_ALPHA:
 237             for (i = 0; i < count; i++) {
 238                GLuint j = start + i;
 239                tableF[j*2+0] = CLAMP(tempTab[i*2+0] * rScale + rBias, 0.0F, 1.0F);
 240                tableF[j*2+1] = CLAMP(tempTab[i*2+1] * aScale + aBias, 0.0F, 1.0F);
 241             }
 242             break;
 243          case GL_RGB:
 244             for (i = 0; i < count; i++) {
 245                GLuint j = start + i;
 246                tableF[j*3+0] = CLAMP(tempTab[i*3+0] * rScale + rBias, 0.0F, 1.0F);
 247                tableF[j*3+1] = CLAMP(tempTab[i*3+1] * gScale + gBias, 0.0F, 1.0F);
 248                tableF[j*3+2] = CLAMP(tempTab[i*3+2] * bScale + bBias, 0.0F, 1.0F);
 249             }
 250             break;
 251          case GL_RGBA:
 252             for (i = 0; i < count; i++) {
 253                GLuint j = start + i;
 254                tableF[j*4+0] = CLAMP(tempTab[i*4+0] * rScale + rBias, 0.0F, 1.0F);
 255                tableF[j*4+1] = CLAMP(tempTab[i*4+1] * gScale + gBias, 0.0F, 1.0F);
 256                tableF[j*4+2] = CLAMP(tempTab[i*4+2] * bScale + bBias, 0.0F, 1.0F);
 257                tableF[j*4+3] = CLAMP(tempTab[i*4+3] * aScale + aBias, 0.0F, 1.0F);
 258             }
 259             break;
 260          default:
 261             _mesa_problem(ctx, "Bad format in store_colortable_entries");
 262             return;
 263          }
 264    }
 265
 266    /* update the ubyte table */
 267    {
 268       const GLint comps = _mesa_components_in_format(table->_BaseFormat);
 269       const GLfloat *tableF = table->TableF + start * comps;
 270       GLubyte *tableUB = table->TableUB + start * comps;
 271       GLint i;
 272       for (i = 0; i < count * comps; i++) {
 273          CLAMPED_FLOAT_TO_UBYTE(tableUB[i], tableF[i]);
 274       }
 275    }
 276
 277    _mesa_unmap_pbo_source(ctx, &ctx->Unpack);
 278 }
 279
 280
 281
 282 void GLAPIENTRY
 283 _mesa_ColorTable( GLenum target, GLenum internalFormat,
 284                   GLsizei width, GLenum format, GLenum type,
 285                   const GLvoid *data )
 286 {
 287    static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 };
 288    static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 };
 289    GET_CURRENT_CONTEXT(ctx);
 290    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 291    struct gl_texture_object *texObj = NULL;
 292    struct gl_color_table *table = NULL;
 293    GLboolean proxy = GL_FALSE;
 294    GLint baseFormat;
 295    const GLfloat *scale = one, *bias = zero;
 296    GLint comps;
 297
 298    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex */
 299
 300    switch (target) {
 301       case GL_SHARED_TEXTURE_PALETTE_EXT:
 302          table = &ctx->Texture.Palette;
 303          break;
 304       default:
 305          /* try texture targets */
 306          {
 307             struct gl_texture_object *texobj
 308                = _mesa_select_tex_object(ctx, texUnit, target);
 309             if (texobj) {
 310                table = &texobj->Palette;
 311                proxy = _mesa_is_proxy_texture(target);
 312             }
 313             else {
 314                _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
 315                return;
 316             }
 317          }
 318    }
 319
 320    assert(table);
 321
 322    if (!_mesa_is_legal_format_and_type(ctx, format, type) ||
 323        format == GL_INTENSITY) {
 324       _mesa_error(ctx, GL_INVALID_OPERATION, "glColorTable(format or type)");
 325       return;
 326    }
 327
 328    baseFormat = base_colortab_format(internalFormat);
 329    if (baseFormat < 0) {
 330       _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(internalFormat)");
 331       return;
 332    }
 333
 334    if (width < 0 || (width != 0 && !_mesa_is_pow_two(width))) {
 335       /* error */
 336       if (proxy) {
 337          table->Size = 0;
 338          table->InternalFormat = (GLenum) 0;
 339          table->_BaseFormat = (GLenum) 0;
 340       }
 341       else {
 342          _mesa_error(ctx, GL_INVALID_VALUE, "glColorTable(width=%d)", width);
 343       }
 344       return;
 345    }
 346
 347    if (width > (GLsizei) ctx->Const.MaxColorTableSize) {
 348       if (proxy) {
 349          table->Size = 0;
 350          table->InternalFormat = (GLenum) 0;
 351          table->_BaseFormat = (GLenum) 0;
 352       }
 353       else {
 354          _mesa_error(ctx, GL_TABLE_TOO_LARGE, "glColorTable(width)");
 355       }
 356       return;
 357    }
 358
 359    table->Size = width;
 360    table->InternalFormat = internalFormat;
 361    table->_BaseFormat = (GLenum) baseFormat;
 362
 363    comps = _mesa_components_in_format(table->_BaseFormat);
 364    assert(comps > 0);  /* error should have been caught sooner */
 365
 366    if (!proxy) {
 367       _mesa_free_colortable_data(table);
 368
 369       if (width > 0) {
 370          table->TableF = (GLfloat *) malloc(comps * width * sizeof(GLfloat));
 371          table->TableUB = (GLubyte *) malloc(comps * width * sizeof(GLubyte));
 372
 373          if (!table->TableF || !table->TableUB) {
 374             _mesa_error(ctx, GL_OUT_OF_MEMORY, "glColorTable");
 375             return;
 376          }
 377
 378          store_colortable_entries(ctx, table,
 379                                   0, width,  /* start, count */
 380                                   format, type, data,
 381                                   scale[0], bias[0],
 382                                   scale[1], bias[1],
 383                                   scale[2], bias[2],
 384                                   scale[3], bias[3]);
 385       }
 386    } /* proxy */
 387
 388    /* do this after the table's Type and Format are set */
 389    set_component_sizes(table);
 390
 391    if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) {
 392       /* texture object palette, texObj==NULL means the shared palette */
 393       if (ctx->Driver.UpdateTexturePalette) {
 394          (*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
 395       }
 396    }
 397
 398    ctx->NewState |= _NEW_PIXEL;
 399 }
 400
 401
 402
 403 void GLAPIENTRY
 404 _mesa_ColorSubTable( GLenum target, GLsizei start,
 405                      GLsizei count, GLenum format, GLenum type,
 406                      const GLvoid *data )
 407 {
 408    static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 };
 409    static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 };
 410    GET_CURRENT_CONTEXT(ctx);
 411    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 412    struct gl_texture_object *texObj = NULL;
 413    struct gl_color_table *table = NULL;
 414    const GLfloat *scale = one, *bias = zero;
 415
 416    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 417
 418    switch (target) {
 419       case GL_SHARED_TEXTURE_PALETTE_EXT:
 420          table = &ctx->Texture.Palette;
 421          break;
 422       default:
 423          /* try texture targets */
 424          texObj = _mesa_select_tex_object(ctx, texUnit, target);
 425          if (texObj && !_mesa_is_proxy_texture(target)) {
 426             table = &texObj->Palette;
 427          }
 428          else {
 429             _mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");
 430             return;
 431          }
 432    }
 433
 434    assert(table);
 435
 436    if (!_mesa_is_legal_format_and_type(ctx, format, type) ||
 437        format == GL_INTENSITY) {
 438       _mesa_error(ctx, GL_INVALID_OPERATION, "glColorSubTable(format or type)");
 439       return;
 440    }
 441
 442    if (count < 1) {
 443       _mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");
 444       return;
 445    }
 446
 447    /* error should have been caught sooner */
 448    assert(_mesa_components_in_format(table->_BaseFormat) > 0);
 449
 450    if (start + count > (GLint) table->Size) {
 451       _mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");
 452       return;
 453    }
 454
 455    if (!table->TableF || !table->TableUB) {
 456       /* a GL_OUT_OF_MEMORY error would have been recorded previously */
 457       return;
 458    }
 459
 460    store_colortable_entries(ctx, table, start, count,
 461                             format, type, data,
 462                             scale[0], bias[0],
 463                             scale[1], bias[1],
 464                             scale[2], bias[2],
 465                             scale[3], bias[3]);
 466
 467    if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) {
 468       /* per-texture object palette */
 469       if (ctx->Driver.UpdateTexturePalette) {
 470          (*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
 471       }
 472    }
 473
 474    ctx->NewState |= _NEW_PIXEL;
 475 }
 476
 477
 478
 479 static void GLAPIENTRY
 480 _mesa_CopyColorTable(GLenum target, GLenum internalformat,
 481                      GLint x, GLint y, GLsizei width)
 482 {
 483    GET_CURRENT_CONTEXT(ctx);
 484    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 485
 486    if (!ctx->ReadBuffer->_ColorReadBuffer) {
 487       return;      /* no readbuffer - OK */
 488    }
 489
 490    ctx->Driver.CopyColorTable( ctx, target, internalformat, x, y, width );
 491 }
 492
 493
 494
 495 static void GLAPIENTRY
 496 _mesa_CopyColorSubTable(GLenum target, GLsizei start,
 497                         GLint x, GLint y, GLsizei width)
 498 {
 499    GET_CURRENT_CONTEXT(ctx);
 500    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 501
 502    if (!ctx->ReadBuffer->_ColorReadBuffer) {
 503       return;      /* no readbuffer - OK */
 504    }
 505
 506    ctx->Driver.CopyColorSubTable( ctx, target, start, x, y, width );
 507 }
 508
 509
 510
 511 static void GLAPIENTRY
 512 _mesa_GetColorTable( GLenum target, GLenum format,
 513                      GLenum type, GLvoid *data )
 514 {
 515    GET_CURRENT_CONTEXT(ctx);
 516    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 517    struct gl_color_table *table = NULL;
 518    GLfloat rgba[MAX_COLOR_TABLE_SIZE][4];
 519    GLbitfield transferOps = 0;
 520    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 521
 522    if (ctx->NewState) {
 523       _mesa_update_state(ctx);
 524    }
 525
 526    switch (target) {
 527       case GL_SHARED_TEXTURE_PALETTE_EXT:
 528          table = &ctx->Texture.Palette;
 529          break;
 530       default:
 531          /* try texture targets */
 532          {
 533             struct gl_texture_object *texobj
 534                = _mesa_select_tex_object(ctx, texUnit, target);
 535             if (texobj && !_mesa_is_proxy_texture(target)) {
 536                table = &texobj->Palette;
 537             }
 538             else {
 539                _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTable(target)");
 540                return;
 541             }
 542          }
 543    }
 544
 545    ASSERT(table);
 546
 547    if (table->Size <= 0) {
 548       return;
 549    }
 550
 551    switch (table->_BaseFormat) {
 552    case GL_ALPHA:
 553       {
 554          GLuint i;
 555          for (i = 0; i < table->Size; i++) {
 556             rgba[i][RCOMP] = 0;
 557             rgba[i][GCOMP] = 0;
 558             rgba[i][BCOMP] = 0;
 559             rgba[i][ACOMP] = table->TableF[i];
 560          }
 561       }
 562       break;
 563    case GL_LUMINANCE:
 564       {
 565          GLuint i;
 566          for (i = 0; i < table->Size; i++) {
 567             rgba[i][RCOMP] =
 568             rgba[i][GCOMP] =
 569             rgba[i][BCOMP] = table->TableF[i];
 570             rgba[i][ACOMP] = 1.0F;
 571          }
 572       }
 573       break;
 574    case GL_LUMINANCE_ALPHA:
 575       {
 576          GLuint i;
 577          for (i = 0; i < table->Size; i++) {
 578             rgba[i][RCOMP] =
 579             rgba[i][GCOMP] =
 580             rgba[i][BCOMP] = table->TableF[i*2+0];
 581             rgba[i][ACOMP] = table->TableF[i*2+1];
 582          }
 583       }
 584       break;
 585    case GL_INTENSITY:
 586       {
 587          GLuint i;
 588          for (i = 0; i < table->Size; i++) {
 589             rgba[i][RCOMP] =
 590             rgba[i][GCOMP] =
 591             rgba[i][BCOMP] =
 592             rgba[i][ACOMP] = table->TableF[i];
 593          }
 594       }
 595       break;
 596    case GL_RGB:
 597       {
 598          GLuint i;
 599          for (i = 0; i < table->Size; i++) {
 600             rgba[i][RCOMP] = table->TableF[i*3+0];
 601             rgba[i][GCOMP] = table->TableF[i*3+1];
 602             rgba[i][BCOMP] = table->TableF[i*3+2];
 603             rgba[i][ACOMP] = 1.0F;
 604          }
 605       }
 606       break;
 607    case GL_RGBA:
 608       memcpy(rgba, table->TableF, 4 * table->Size * sizeof(GLfloat));
 609       break;
 610    default:
 611       _mesa_problem(ctx, "bad table format in glGetColorTable");
 612       return;
 613    }
 614
 615    data = _mesa_map_validate_pbo_dest(ctx,
 616                                       1, &ctx->Pack, table->Size, 1, 1,
 617                                       format, type, data,
 618                                       "glGetColorTable");
 619    if (!data)
 620       return;
 621
 622    /* TODO: is this correct? */
 623    if(ctx->Color._ClampReadColor)
 624       transferOps |= IMAGE_CLAMP_BIT;
 625
 626    _mesa_pack_rgba_span_float(ctx, table->Size, rgba,
 627                               format, type, data, &ctx->Pack, transferOps);
 628
 629    _mesa_unmap_pbo_dest(ctx, &ctx->Pack);
 630 }
 631
 632
 633
 634 static void GLAPIENTRY
 635 _mesa_ColorTableParameterfv(GLenum target, GLenum pname, const GLfloat *params)
 636 {
 637    /* no extensions use this function */
 638    GET_CURRENT_CONTEXT(ctx);
 639    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 640    _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameterfv(target)");
 641 }
 642
 643
 644
 645 static void GLAPIENTRY
 646 _mesa_ColorTableParameteriv(GLenum target, GLenum pname, const GLint *params)
 647 {
 648    /* no extensions use this function */
 649    GET_CURRENT_CONTEXT(ctx);
 650    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 651    _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameteriv(target)");
 652 }
 653
 654
 655
 656 static void GLAPIENTRY
 657 _mesa_GetColorTableParameterfv( GLenum target, GLenum pname, GLfloat *params )
 658 {
 659    GET_CURRENT_CONTEXT(ctx);
 660    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 661    struct gl_color_table *table = NULL;
 662    ASSERT_OUTSIDE_BEGIN_END(ctx);
 663
 664    switch (target) {
 665       case GL_SHARED_TEXTURE_PALETTE_EXT:
 666          table = &ctx->Texture.Palette;
 667          break;
 668       default:
 669          /* try texture targets */
 670          {
 671             struct gl_texture_object *texobj
 672                = _mesa_select_tex_object(ctx, texUnit, target);
 673             if (texobj) {
 674                table = &texobj->Palette;
 675             }
 676             else {
 677                _mesa_error(ctx, GL_INVALID_ENUM,
 678                            "glGetColorTableParameterfv(target)");
 679                return;
 680             }
 681          }
 682    }
 683
 684    assert(table);
 685
 686    switch (pname) {
 687       case GL_COLOR_TABLE_FORMAT:
 688          *params = (GLfloat) table->InternalFormat;
 689          break;
 690       case GL_COLOR_TABLE_WIDTH:
 691          *params = (GLfloat) table->Size;
 692          break;
 693       case GL_COLOR_TABLE_RED_SIZE:
 694          *params = (GLfloat) table->RedSize;
 695          break;
 696       case GL_COLOR_TABLE_GREEN_SIZE:
 697          *params = (GLfloat) table->GreenSize;
 698          break;
 699       case GL_COLOR_TABLE_BLUE_SIZE:
 700          *params = (GLfloat) table->BlueSize;
 701          break;
 702       case GL_COLOR_TABLE_ALPHA_SIZE:
 703          *params = (GLfloat) table->AlphaSize;
 704          break;
 705       case GL_COLOR_TABLE_LUMINANCE_SIZE:
 706          *params = (GLfloat) table->LuminanceSize;
 707          break;
 708       case GL_COLOR_TABLE_INTENSITY_SIZE:
 709          *params = (GLfloat) table->IntensitySize;
 710          break;
 711       default:
 712          _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameterfv(pname)" );
 713          return;
 714    }
 715 }
 716
 717
 718
 719 static void GLAPIENTRY
 720 _mesa_GetColorTableParameteriv( GLenum target, GLenum pname, GLint *params )
 721 {
 722    GET_CURRENT_CONTEXT(ctx);
 723    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 724    struct gl_color_table *table = NULL;
 725    ASSERT_OUTSIDE_BEGIN_END(ctx);
 726
 727    switch (target) {
 728       case GL_SHARED_TEXTURE_PALETTE_EXT:
 729          table = &ctx->Texture.Palette;
 730          break;
 731       default:
 732          /* Try texture targets */
 733          {
 734             struct gl_texture_object *texobj
 735                = _mesa_select_tex_object(ctx, texUnit, target);
 736             if (texobj) {
 737                table = &texobj->Palette;
 738             }
 739             else {
 740                _mesa_error(ctx, GL_INVALID_ENUM,
 741                            "glGetColorTableParameteriv(target)");
 742                return;
 743             }
 744          }
 745    }
 746
 747    assert(table);
 748
 749    switch (pname) {
 750       case GL_COLOR_TABLE_FORMAT:
 751          *params = table->InternalFormat;
 752          break;
 753       case GL_COLOR_TABLE_WIDTH:
 754          *params = table->Size;
 755          break;
 756       case GL_COLOR_TABLE_RED_SIZE:
 757          *params = table->RedSize;
 758          break;
 759       case GL_COLOR_TABLE_GREEN_SIZE:
 760          *params = table->GreenSize;
 761          break;
 762       case GL_COLOR_TABLE_BLUE_SIZE:
 763          *params = table->BlueSize;
 764          break;
 765       case GL_COLOR_TABLE_ALPHA_SIZE:
 766          *params = table->AlphaSize;
 767          break;
 768       case GL_COLOR_TABLE_LUMINANCE_SIZE:
 769          *params = table->LuminanceSize;
 770          break;
 771       case GL_COLOR_TABLE_INTENSITY_SIZE:
 772          *params = table->IntensitySize;
 773          break;
 774       default:
 775          _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameteriv(pname)" );
 776          return;
 777    }
 778 }
 779
 780
 781 void
 782 _mesa_init_colortable_dispatch(struct _glapi_table *disp)
 783 {
 784    SET_ColorSubTable(disp, _mesa_ColorSubTable);
 785    SET_ColorTable(disp, _mesa_ColorTable);
 786    SET_ColorTableParameterfv(disp, _mesa_ColorTableParameterfv);
 787    SET_ColorTableParameteriv(disp, _mesa_ColorTableParameteriv);
 788    SET_CopyColorSubTable(disp, _mesa_CopyColorSubTable);
 789    SET_CopyColorTable(disp, _mesa_CopyColorTable);
 790    SET_GetColorTable(disp, _mesa_GetColorTable);
 791    SET_GetColorTableParameterfv(disp, _mesa_GetColorTableParameterfv);
 792    SET_GetColorTableParameteriv(disp, _mesa_GetColorTableParameteriv);
 793 }
 794
 795
 796 #endif /* FEATURE_colortable */
 797
 798
 799 /**********************************************************************/
 800 /*****                      Initialization                        *****/
 801 /**********************************************************************/
 802
 803
 804 void
 805 _mesa_init_colortable( struct gl_color_table *p )
 806 {
 807    p->TableF = NULL;
 808    p->TableUB = NULL;
 809    p->Size = 0;
 810    p->InternalFormat = GL_RGBA;
 811 }
 812
 813
 814
 815 void
 816 _mesa_free_colortable_data( struct gl_color_table *p )
 817 {
 818    if (p->TableF) {
 819       free(p->TableF);
 820       p->TableF = NULL;
 821    }
 822    if (p->TableUB) {
 823       free(p->TableUB);
 824       p->TableUB = NULL;
 825    }
 826 }