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 "state.h"
  36 #include "teximage.h"
  37 #include "texstate.h"
  38 #include "main/dispatch.h"
  39
  40
  41 #if FEATURE_colortable
  42
  43
  44 /**
  45  * Given an internalFormat token passed to glColorTable,
  46  * return the corresponding base format.
  47  * Return -1 if invalid token.
  48  */
  49 static GLint
  50 base_colortab_format( GLenum format )
  51 {
  52    switch (format) {
  53       case GL_ALPHA:
  54       case GL_ALPHA4:
  55       case GL_ALPHA8:
  56       case GL_ALPHA12:
  57       case GL_ALPHA16:
  58          return GL_ALPHA;
  59       case GL_LUMINANCE:
  60       case GL_LUMINANCE4:
  61       case GL_LUMINANCE8:
  62       case GL_LUMINANCE12:
  63       case GL_LUMINANCE16:
  64          return GL_LUMINANCE;
  65       case GL_LUMINANCE_ALPHA:
  66       case GL_LUMINANCE4_ALPHA4:
  67       case GL_LUMINANCE6_ALPHA2:
  68       case GL_LUMINANCE8_ALPHA8:
  69       case GL_LUMINANCE12_ALPHA4:
  70       case GL_LUMINANCE12_ALPHA12:
  71       case GL_LUMINANCE16_ALPHA16:
  72          return GL_LUMINANCE_ALPHA;
  73       case GL_INTENSITY:
  74       case GL_INTENSITY4:
  75       case GL_INTENSITY8:
  76       case GL_INTENSITY12:
  77       case GL_INTENSITY16:
  78          return GL_INTENSITY;
  79       case GL_RGB:
  80       case GL_R3_G3_B2:
  81       case GL_RGB4:
  82       case GL_RGB5:
  83       case GL_RGB8:
  84       case GL_RGB10:
  85       case GL_RGB12:
  86       case GL_RGB16:
  87          return GL_RGB;
  88       case GL_RGBA:
  89       case GL_RGBA2:
  90       case GL_RGBA4:
  91       case GL_RGB5_A1:
  92       case GL_RGBA8:
  93       case GL_RGB10_A2:
  94       case GL_RGBA12:
  95       case GL_RGBA16:
  96          return GL_RGBA;
  97       default:
  98          return -1;  /* error */
  99    }
 100 }
 101
 102
 103
 104 /**
 105  * Examine table's format and set the component sizes accordingly.
 106  */
 107 static void
 108 set_component_sizes( struct gl_color_table *table )
 109 {
 110    /* assuming the ubyte table */
 111    const GLubyte sz = 8;
 112
 113    switch (table->_BaseFormat) {
 114       case GL_ALPHA:
 115          table->RedSize = 0;
 116          table->GreenSize = 0;
 117          table->BlueSize = 0;
 118          table->AlphaSize = sz;
 119          table->IntensitySize = 0;
 120          table->LuminanceSize = 0;
 121          break;
 122       case GL_LUMINANCE:
 123          table->RedSize = 0;
 124          table->GreenSize = 0;
 125          table->BlueSize = 0;
 126          table->AlphaSize = 0;
 127          table->IntensitySize = 0;
 128          table->LuminanceSize = sz;
 129          break;
 130       case GL_LUMINANCE_ALPHA:
 131          table->RedSize = 0;
 132          table->GreenSize = 0;
 133          table->BlueSize = 0;
 134          table->AlphaSize = sz;
 135          table->IntensitySize = 0;
 136          table->LuminanceSize = sz;
 137          break;
 138       case GL_INTENSITY:
 139          table->RedSize = 0;
 140          table->GreenSize = 0;
 141          table->BlueSize = 0;
 142          table->AlphaSize = 0;
 143          table->IntensitySize = sz;
 144          table->LuminanceSize = 0;
 145          break;
 146       case GL_RGB:
 147          table->RedSize = sz;
 148          table->GreenSize = sz;
 149          table->BlueSize = sz;
 150          table->AlphaSize = 0;
 151          table->IntensitySize = 0;
 152          table->LuminanceSize = 0;
 153          break;
 154       case GL_RGBA:
 155          table->RedSize = sz;
 156          table->GreenSize = sz;
 157          table->BlueSize = sz;
 158          table->AlphaSize = sz;
 159          table->IntensitySize = 0;
 160          table->LuminanceSize = 0;
 161          break;
 162       default:
 163          _mesa_problem(NULL, "unexpected format in set_component_sizes");
 164    }
 165 }
 166
 167
 168
 169 /**
 170  * Update/replace all or part of a color table.  Helper function
 171  * used by _mesa_ColorTable() and _mesa_ColorSubTable().
 172  * The table->Table buffer should already be allocated.
 173  * \param start first entry to update
 174  * \param count number of entries to update
 175  * \param format format of user-provided table data
 176  * \param type datatype of user-provided table data
 177  * \param data user-provided table data
 178  * \param [rgba]Scale - RGBA scale factors
 179  * \param [rgba]Bias - RGBA bias factors
 180  */
 181 static void
 182 store_colortable_entries(struct gl_context *ctx, struct gl_color_table *table,
 183                          GLsizei start, GLsizei count,
 184                          GLenum format, GLenum type, const GLvoid *data,
 185                          GLfloat rScale, GLfloat rBias,
 186                          GLfloat gScale, GLfloat gBias,
 187                          GLfloat bScale, GLfloat bBias,
 188                          GLfloat aScale, GLfloat aBias)
 189 {
 190    data = _mesa_map_validate_pbo_source(ctx,
 191                                         1, &ctx->Unpack, count, 1, 1,
 192                                         format, type, data,
 193                                         "glColor[Sub]Table");
 194    if (!data)
 195       return;
 196
 197    {
 198       /* convert user-provided data to GLfloat values */
 199       GLfloat tempTab[MAX_COLOR_TABLE_SIZE * 4];
 200       GLfloat *tableF;
 201       GLint i;
 202
 203       _mesa_unpack_color_span_float(ctx,
 204                                     count,         /* number of pixels */
 205                                     table->_BaseFormat, /* dest format */
 206                                     tempTab,       /* dest address */
 207                                     format, type,  /* src format/type */
 208                                     data,          /* src data */
 209                                     &ctx->Unpack,
 210                                     IMAGE_CLAMP_BIT); /* transfer ops */
 211
 212       /* the destination */
 213       tableF = table->TableF;
 214
 215       /* Apply scale & bias & clamp now */
 216       switch (table->_BaseFormat) {
 217          case GL_INTENSITY:
 218             for (i = 0; i < count; i++) {
 219                GLuint j = start + i;
 220                tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F);
 221             }
 222             break;
 223          case GL_LUMINANCE:
 224             for (i = 0; i < count; i++) {
 225                GLuint j = start + i;
 226                tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F);
 227             }
 228             break;
 229          case GL_ALPHA:
 230             for (i = 0; i < count; i++) {
 231                GLuint j = start + i;
 232                tableF[j] = CLAMP(tempTab[i] * aScale + aBias, 0.0F, 1.0F);
 233             }
 234             break;
 235          case GL_LUMINANCE_ALPHA:
 236             for (i = 0; i < count; i++) {
 237                GLuint j = start + i;
 238                tableF[j*2+0] = CLAMP(tempTab[i*2+0] * rScale + rBias, 0.0F, 1.0F);
 239                tableF[j*2+1] = CLAMP(tempTab[i*2+1] * aScale + aBias, 0.0F, 1.0F);
 240             }
 241             break;
 242          case GL_RGB:
 243             for (i = 0; i < count; i++) {
 244                GLuint j = start + i;
 245                tableF[j*3+0] = CLAMP(tempTab[i*3+0] * rScale + rBias, 0.0F, 1.0F);
 246                tableF[j*3+1] = CLAMP(tempTab[i*3+1] * gScale + gBias, 0.0F, 1.0F);
 247                tableF[j*3+2] = CLAMP(tempTab[i*3+2] * bScale + bBias, 0.0F, 1.0F);
 248             }
 249             break;
 250          case GL_RGBA:
 251             for (i = 0; i < count; i++) {
 252                GLuint j = start + i;
 253                tableF[j*4+0] = CLAMP(tempTab[i*4+0] * rScale + rBias, 0.0F, 1.0F);
 254                tableF[j*4+1] = CLAMP(tempTab[i*4+1] * gScale + gBias, 0.0F, 1.0F);
 255                tableF[j*4+2] = CLAMP(tempTab[i*4+2] * bScale + bBias, 0.0F, 1.0F);
 256                tableF[j*4+3] = CLAMP(tempTab[i*4+3] * aScale + aBias, 0.0F, 1.0F);
 257             }
 258             break;
 259          default:
 260             _mesa_problem(ctx, "Bad format in store_colortable_entries");
 261             return;
 262          }
 263    }
 264
 265    /* update the ubyte table */
 266    {
 267       const GLint comps = _mesa_components_in_format(table->_BaseFormat);
 268       const GLfloat *tableF = table->TableF + start * comps;
 269       GLubyte *tableUB = table->TableUB + start * comps;
 270       GLint i;
 271       for (i = 0; i < count * comps; i++) {
 272          CLAMPED_FLOAT_TO_UBYTE(tableUB[i], tableF[i]);
 273       }
 274    }
 275
 276    _mesa_unmap_pbo_source(ctx, &ctx->Unpack);
 277 }
 278
 279
 280
 281 void GLAPIENTRY
 282 _mesa_ColorTable( GLenum target, GLenum internalFormat,
 283                   GLsizei width, GLenum format, GLenum type,
 284                   const GLvoid *data )
 285 {
 286    static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 };
 287    static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 };
 288    GET_CURRENT_CONTEXT(ctx);
 289    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 290    struct gl_texture_object *texObj = NULL;
 291    struct gl_color_table *table = NULL;
 292    GLboolean proxy = GL_FALSE;
 293    GLint baseFormat;
 294    const GLfloat *scale = one, *bias = zero;
 295    GLint comps;
 296
 297    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex */
 298
 299    switch (target) {
 300       case GL_SHARED_TEXTURE_PALETTE_EXT:
 301          table = &ctx->Texture.Palette;
 302          break;
 303       default:
 304          /* try texture targets */
 305          {
 306             struct gl_texture_object *texobj
 307                = _mesa_select_tex_object(ctx, texUnit, target);
 308             if (texobj) {
 309                table = &texobj->Palette;
 310                proxy = _mesa_is_proxy_texture(target);
 311             }
 312             else {
 313                _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
 314                return;
 315             }
 316          }
 317    }
 318
 319    assert(table);
 320
 321    if (!_mesa_is_legal_format_and_type(ctx, format, type) ||
 322        format == GL_INTENSITY) {
 323       _mesa_error(ctx, GL_INVALID_OPERATION, "glColorTable(format or type)");
 324       return;
 325    }
 326
 327    baseFormat = base_colortab_format(internalFormat);
 328    if (baseFormat < 0) {
 329       _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(internalFormat)");
 330       return;
 331    }
 332
 333    if (width < 0 || (width != 0 && !_mesa_is_pow_two(width))) {
 334       /* error */
 335       if (proxy) {
 336          table->Size = 0;
 337          table->InternalFormat = (GLenum) 0;
 338          table->_BaseFormat = (GLenum) 0;
 339       }
 340       else {
 341          _mesa_error(ctx, GL_INVALID_VALUE, "glColorTable(width=%d)", width);
 342       }
 343       return;
 344    }
 345
 346    if (width > (GLsizei) ctx->Const.MaxColorTableSize) {
 347       if (proxy) {
 348          table->Size = 0;
 349          table->InternalFormat = (GLenum) 0;
 350          table->_BaseFormat = (GLenum) 0;
 351       }
 352       else {
 353          _mesa_error(ctx, GL_TABLE_TOO_LARGE, "glColorTable(width)");
 354       }
 355       return;
 356    }
 357
 358    table->Size = width;
 359    table->InternalFormat = internalFormat;
 360    table->_BaseFormat = (GLenum) baseFormat;
 361
 362    comps = _mesa_components_in_format(table->_BaseFormat);
 363    assert(comps > 0);  /* error should have been caught sooner */
 364
 365    if (!proxy) {
 366       _mesa_free_colortable_data(table);
 367
 368       if (width > 0) {
 369          table->TableF = (GLfloat *) malloc(comps * width * sizeof(GLfloat));
 370          table->TableUB = (GLubyte *) malloc(comps * width * sizeof(GLubyte));
 371
 372          if (!table->TableF || !table->TableUB) {
 373             _mesa_error(ctx, GL_OUT_OF_MEMORY, "glColorTable");
 374             return;
 375          }
 376
 377          store_colortable_entries(ctx, table,
 378                                   0, width,  /* start, count */
 379                                   format, type, data,
 380                                   scale[0], bias[0],
 381                                   scale[1], bias[1],
 382                                   scale[2], bias[2],
 383                                   scale[3], bias[3]);
 384       }
 385    } /* proxy */
 386
 387    /* do this after the table's Type and Format are set */
 388    set_component_sizes(table);
 389
 390    if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) {
 391       /* texture object palette, texObj==NULL means the shared palette */
 392       if (ctx->Driver.UpdateTexturePalette) {
 393          (*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
 394       }
 395    }
 396
 397    ctx->NewState |= _NEW_PIXEL;
 398 }
 399
 400
 401
 402 void GLAPIENTRY
 403 _mesa_ColorSubTable( GLenum target, GLsizei start,
 404                      GLsizei count, GLenum format, GLenum type,
 405                      const GLvoid *data )
 406 {
 407    static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 };
 408    static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 };
 409    GET_CURRENT_CONTEXT(ctx);
 410    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 411    struct gl_texture_object *texObj = NULL;
 412    struct gl_color_table *table = NULL;
 413    const GLfloat *scale = one, *bias = zero;
 414
 415    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 416
 417    switch (target) {
 418       case GL_SHARED_TEXTURE_PALETTE_EXT:
 419          table = &ctx->Texture.Palette;
 420          break;
 421       default:
 422          /* try texture targets */
 423          texObj = _mesa_select_tex_object(ctx, texUnit, target);
 424          if (texObj && !_mesa_is_proxy_texture(target)) {
 425             table = &texObj->Palette;
 426          }
 427          else {
 428             _mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");
 429             return;
 430          }
 431    }
 432
 433    assert(table);
 434
 435    if (!_mesa_is_legal_format_and_type(ctx, format, type) ||
 436        format == GL_INTENSITY) {
 437       _mesa_error(ctx, GL_INVALID_OPERATION, "glColorSubTable(format or type)");
 438       return;
 439    }
 440
 441    if (count < 1) {
 442       _mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");
 443       return;
 444    }
 445
 446    /* error should have been caught sooner */
 447    assert(_mesa_components_in_format(table->_BaseFormat) > 0);
 448
 449    if (start + count > (GLint) table->Size) {
 450       _mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");
 451       return;
 452    }
 453
 454    if (!table->TableF || !table->TableUB) {
 455       /* a GL_OUT_OF_MEMORY error would have been recorded previously */
 456       return;
 457    }
 458
 459    store_colortable_entries(ctx, table, start, count,
 460                             format, type, data,
 461                             scale[0], bias[0],
 462                             scale[1], bias[1],
 463                             scale[2], bias[2],
 464                             scale[3], bias[3]);
 465
 466    if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) {
 467       /* per-texture object palette */
 468       if (ctx->Driver.UpdateTexturePalette) {
 469          (*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
 470       }
 471    }
 472
 473    ctx->NewState |= _NEW_PIXEL;
 474 }
 475
 476
 477
 478 static void GLAPIENTRY
 479 _mesa_CopyColorTable(GLenum target, GLenum internalformat,
 480                      GLint x, GLint y, GLsizei width)
 481 {
 482    GET_CURRENT_CONTEXT(ctx);
 483    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 484
 485    if (!ctx->ReadBuffer->_ColorReadBuffer) {
 486       return;      /* no readbuffer - OK */
 487    }
 488
 489    ctx->Driver.CopyColorTable( ctx, target, internalformat, x, y, width );
 490 }
 491
 492
 493
 494 static void GLAPIENTRY
 495 _mesa_CopyColorSubTable(GLenum target, GLsizei start,
 496                         GLint x, GLint y, GLsizei width)
 497 {
 498    GET_CURRENT_CONTEXT(ctx);
 499    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 500
 501    if (!ctx->ReadBuffer->_ColorReadBuffer) {
 502       return;      /* no readbuffer - OK */
 503    }
 504
 505    ctx->Driver.CopyColorSubTable( ctx, target, start, x, y, width );
 506 }
 507
 508
 509
 510 static void GLAPIENTRY
 511 _mesa_GetColorTable( GLenum target, GLenum format,
 512                      GLenum type, GLvoid *data )
 513 {
 514    GET_CURRENT_CONTEXT(ctx);
 515    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 516    struct gl_color_table *table = NULL;
 517    GLfloat rgba[MAX_COLOR_TABLE_SIZE][4];
 518    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 519
 520    if (ctx->NewState) {
 521       _mesa_update_state(ctx);
 522    }
 523
 524    switch (target) {
 525       case GL_SHARED_TEXTURE_PALETTE_EXT:
 526          table = &ctx->Texture.Palette;
 527          break;
 528       default:
 529          /* try texture targets */
 530          {
 531             struct gl_texture_object *texobj
 532                = _mesa_select_tex_object(ctx, texUnit, target);
 533             if (texobj && !_mesa_is_proxy_texture(target)) {
 534                table = &texobj->Palette;
 535             }
 536             else {
 537                _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTable(target)");
 538                return;
 539             }
 540          }
 541    }
 542
 543    ASSERT(table);
 544
 545    if (table->Size <= 0) {
 546       return;
 547    }
 548
 549    switch (table->_BaseFormat) {
 550    case GL_ALPHA:
 551       {
 552          GLuint i;
 553          for (i = 0; i < table->Size; i++) {
 554             rgba[i][RCOMP] = 0;
 555             rgba[i][GCOMP] = 0;
 556             rgba[i][BCOMP] = 0;
 557             rgba[i][ACOMP] = table->TableF[i];
 558          }
 559       }
 560       break;
 561    case GL_LUMINANCE:
 562       {
 563          GLuint i;
 564          for (i = 0; i < table->Size; i++) {
 565             rgba[i][RCOMP] =
 566             rgba[i][GCOMP] =
 567             rgba[i][BCOMP] = table->TableF[i];
 568             rgba[i][ACOMP] = 1.0F;
 569          }
 570       }
 571       break;
 572    case GL_LUMINANCE_ALPHA:
 573       {
 574          GLuint i;
 575          for (i = 0; i < table->Size; i++) {
 576             rgba[i][RCOMP] =
 577             rgba[i][GCOMP] =
 578             rgba[i][BCOMP] = table->TableF[i*2+0];
 579             rgba[i][ACOMP] = table->TableF[i*2+1];
 580          }
 581       }
 582       break;
 583    case GL_INTENSITY:
 584       {
 585          GLuint i;
 586          for (i = 0; i < table->Size; i++) {
 587             rgba[i][RCOMP] =
 588             rgba[i][GCOMP] =
 589             rgba[i][BCOMP] =
 590             rgba[i][ACOMP] = table->TableF[i];
 591          }
 592       }
 593       break;
 594    case GL_RGB:
 595       {
 596          GLuint i;
 597          for (i = 0; i < table->Size; i++) {
 598             rgba[i][RCOMP] = table->TableF[i*3+0];
 599             rgba[i][GCOMP] = table->TableF[i*3+1];
 600             rgba[i][BCOMP] = table->TableF[i*3+2];
 601             rgba[i][ACOMP] = 1.0F;
 602          }
 603       }
 604       break;
 605    case GL_RGBA:
 606       memcpy(rgba, table->TableF, 4 * table->Size * sizeof(GLfloat));
 607       break;
 608    default:
 609       _mesa_problem(ctx, "bad table format in glGetColorTable");
 610       return;
 611    }
 612
 613    data = _mesa_map_validate_pbo_dest(ctx,
 614                                       1, &ctx->Pack, table->Size, 1, 1,
 615                                       format, type, data,
 616                                       "glGetColorTable");
 617    if (!data)
 618       return;
 619
 620    _mesa_pack_rgba_span_float(ctx, table->Size, rgba,
 621                               format, type, data, &ctx->Pack, 0x0);
 622
 623    _mesa_unmap_pbo_dest(ctx, &ctx->Pack);
 624 }
 625
 626
 627
 628 static void GLAPIENTRY
 629 _mesa_ColorTableParameterfv(GLenum target, GLenum pname, const GLfloat *params)
 630 {
 631    GLfloat *scale, *bias;
 632    GET_CURRENT_CONTEXT(ctx);
 633    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 634
 635    switch (target) {
 636    default:
 637       _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameter(target)");
 638       return;
 639    }
 640
 641    if (pname == GL_COLOR_TABLE_SCALE_SGI) {
 642       COPY_4V(scale, params);
 643    }
 644    else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
 645       COPY_4V(bias, params);
 646    }
 647    else {
 648       _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameterfv(pname)");
 649       return;
 650    }
 651
 652    ctx->NewState |= _NEW_PIXEL;
 653 }
 654
 655
 656
 657 static void GLAPIENTRY
 658 _mesa_ColorTableParameteriv(GLenum target, GLenum pname, const GLint *params)
 659 {
 660    GLfloat fparams[4];
 661    fparams[0] = (GLfloat) params[0];
 662    _mesa_ColorTableParameterfv(target, pname, fparams);
 663 }
 664
 665
 666
 667 static void GLAPIENTRY
 668 _mesa_GetColorTableParameterfv( GLenum target, GLenum pname, GLfloat *params )
 669 {
 670    GET_CURRENT_CONTEXT(ctx);
 671    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 672    struct gl_color_table *table = NULL;
 673    ASSERT_OUTSIDE_BEGIN_END(ctx);
 674
 675    switch (target) {
 676       case GL_SHARED_TEXTURE_PALETTE_EXT:
 677          table = &ctx->Texture.Palette;
 678          break;
 679       default:
 680          /* try texture targets */
 681          {
 682             struct gl_texture_object *texobj
 683                = _mesa_select_tex_object(ctx, texUnit, target);
 684             if (texobj) {
 685                table = &texobj->Palette;
 686             }
 687             else {
 688                _mesa_error(ctx, GL_INVALID_ENUM,
 689                            "glGetColorTableParameterfv(target)");
 690                return;
 691             }
 692          }
 693    }
 694
 695    assert(table);
 696
 697    switch (pname) {
 698       case GL_COLOR_TABLE_FORMAT:
 699          *params = (GLfloat) table->InternalFormat;
 700          break;
 701       case GL_COLOR_TABLE_WIDTH:
 702          *params = (GLfloat) table->Size;
 703          break;
 704       case GL_COLOR_TABLE_RED_SIZE:
 705          *params = (GLfloat) table->RedSize;
 706          break;
 707       case GL_COLOR_TABLE_GREEN_SIZE:
 708          *params = (GLfloat) table->GreenSize;
 709          break;
 710       case GL_COLOR_TABLE_BLUE_SIZE:
 711          *params = (GLfloat) table->BlueSize;
 712          break;
 713       case GL_COLOR_TABLE_ALPHA_SIZE:
 714          *params = (GLfloat) table->AlphaSize;
 715          break;
 716       case GL_COLOR_TABLE_LUMINANCE_SIZE:
 717          *params = (GLfloat) table->LuminanceSize;
 718          break;
 719       case GL_COLOR_TABLE_INTENSITY_SIZE:
 720          *params = (GLfloat) table->IntensitySize;
 721          break;
 722       default:
 723          _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameterfv(pname)" );
 724          return;
 725    }
 726 }
 727
 728
 729
 730 static void GLAPIENTRY
 731 _mesa_GetColorTableParameteriv( GLenum target, GLenum pname, GLint *params )
 732 {
 733    GET_CURRENT_CONTEXT(ctx);
 734    struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
 735    struct gl_color_table *table = NULL;
 736    ASSERT_OUTSIDE_BEGIN_END(ctx);
 737
 738    switch (target) {
 739       case GL_SHARED_TEXTURE_PALETTE_EXT:
 740          table = &ctx->Texture.Palette;
 741          break;
 742       default:
 743          /* Try texture targets */
 744          {
 745             struct gl_texture_object *texobj
 746                = _mesa_select_tex_object(ctx, texUnit, target);
 747             if (texobj) {
 748                table = &texobj->Palette;
 749             }
 750             else {
 751                _mesa_error(ctx, GL_INVALID_ENUM,
 752                            "glGetColorTableParameteriv(target)");
 753                return;
 754             }
 755          }
 756    }
 757
 758    assert(table);
 759
 760    switch (pname) {
 761       case GL_COLOR_TABLE_FORMAT:
 762          *params = table->InternalFormat;
 763          break;
 764       case GL_COLOR_TABLE_WIDTH:
 765          *params = table->Size;
 766          break;
 767       case GL_COLOR_TABLE_RED_SIZE:
 768          *params = table->RedSize;
 769          break;
 770       case GL_COLOR_TABLE_GREEN_SIZE:
 771          *params = table->GreenSize;
 772          break;
 773       case GL_COLOR_TABLE_BLUE_SIZE:
 774          *params = table->BlueSize;
 775          break;
 776       case GL_COLOR_TABLE_ALPHA_SIZE:
 777          *params = table->AlphaSize;
 778          break;
 779       case GL_COLOR_TABLE_LUMINANCE_SIZE:
 780          *params = table->LuminanceSize;
 781          break;
 782       case GL_COLOR_TABLE_INTENSITY_SIZE:
 783          *params = table->IntensitySize;
 784          break;
 785       default:
 786          _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameteriv(pname)" );
 787          return;
 788    }
 789 }
 790
 791
 792 void
 793 _mesa_init_colortable_dispatch(struct _glapi_table *disp)
 794 {
 795    SET_ColorSubTable(disp, _mesa_ColorSubTable);
 796    SET_ColorTable(disp, _mesa_ColorTable);
 797    SET_ColorTableParameterfv(disp, _mesa_ColorTableParameterfv);
 798    SET_ColorTableParameteriv(disp, _mesa_ColorTableParameteriv);
 799    SET_CopyColorSubTable(disp, _mesa_CopyColorSubTable);
 800    SET_CopyColorTable(disp, _mesa_CopyColorTable);
 801    SET_GetColorTable(disp, _mesa_GetColorTable);
 802    SET_GetColorTableParameterfv(disp, _mesa_GetColorTableParameterfv);
 803    SET_GetColorTableParameteriv(disp, _mesa_GetColorTableParameteriv);
 804 }
 805
 806
 807 #endif /* FEATURE_colortable */
 808
 809
 810 /**********************************************************************/
 811 /*****                      Initialization                        *****/
 812 /**********************************************************************/
 813
 814
 815 void
 816 _mesa_init_colortable( struct gl_color_table *p )
 817 {
 818    p->TableF = NULL;
 819    p->TableUB = NULL;
 820    p->Size = 0;
 821    p->InternalFormat = GL_RGBA;
 822 }
 823
 824
 825
 826 void
 827 _mesa_free_colortable_data( struct gl_color_table *p )
 828 {
 829    if (p->TableF) {
 830       free(p->TableF);
 831       p->TableF = NULL;
 832    }
 833    if (p->TableUB) {
 834       free(p->TableUB);
 835       p->TableUB = NULL;
 836    }
 837 }