src/mesa/drivers/glide/fxddtex.c

   1 /* $Id: fxddtex.c,v 1.49 2003/10/09 15:12:21 dborca Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  4.0
   6  *
   7  * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27 /* Authors:
  28  *    David Bucciarelli
  29  *    Brian Paul
  30  *    Daryll Strauss
  31  *    Keith Whitwell
  32  *    Daniel Borca
  33  *    Hiroshi Morii
  34  */
  35
  36
  37 #ifdef HAVE_CONFIG_H
  38 #include "conf.h"
  39 #endif
  40
  41 #if defined(FX)
  42
  43 #include "fxdrv.h"
  44 #include "enums.h"
  45 #include "image.h"
  46 #include "teximage.h"
  47 #include "texformat.h"
  48 #include "texstore.h"
  49 #include "texutil.h"
  50
  51
  52 void
  53 fxPrintTextureData(tfxTexInfo * ti)
  54 {
  55    fprintf(stderr, "Texture Data:\n");
  56    if (ti->tObj) {
  57       fprintf(stderr, "\tName: %d\n", ti->tObj->Name);
  58       fprintf(stderr, "\tBaseLevel: %d\n", ti->tObj->BaseLevel);
  59       fprintf(stderr, "\tSize: %d x %d\n",
  60               ti->tObj->Image[ti->tObj->BaseLevel]->Width,
  61               ti->tObj->Image[ti->tObj->BaseLevel]->Height);
  62    }
  63    else
  64       fprintf(stderr, "\tName: UNNAMED\n");
  65    fprintf(stderr, "\tLast used: %d\n", ti->lastTimeUsed);
  66    fprintf(stderr, "\tTMU: %ld\n", ti->whichTMU);
  67    fprintf(stderr, "\t%s\n", (ti->isInTM) ? "In TMU" : "Not in TMU");
  68    if (ti->tm[0])
  69       fprintf(stderr, "\tMem0: %x-%x\n", (unsigned) ti->tm[0]->startAddr,
  70               (unsigned) ti->tm[0]->endAddr);
  71    if (ti->tm[1])
  72       fprintf(stderr, "\tMem1: %x-%x\n", (unsigned) ti->tm[1]->startAddr,
  73               (unsigned) ti->tm[1]->endAddr);
  74    fprintf(stderr, "\tMipmaps: %d-%d\n", ti->minLevel, ti->maxLevel);
  75    fprintf(stderr, "\tFilters: min %d min %d\n",
  76            (int) ti->minFilt, (int) ti->maxFilt);
  77    fprintf(stderr, "\tClamps: s %d t %d\n", (int) ti->sClamp,
  78            (int) ti->tClamp);
  79    fprintf(stderr, "\tScales: s %f t %f\n", ti->sScale, ti->tScale);
  80    fprintf(stderr, "\t%s\n",
  81            (ti->fixedPalette) ? "Fixed palette" : "Non fixed palette");
  82    fprintf(stderr, "\t%s\n", (ti->validated) ? "Validated" : "Not validated");
  83 }
  84
  85
  86 /************************************************************************/
  87 /*************************** Texture Mapping ****************************/
  88 /************************************************************************/
  89
  90 static void
  91 fxTexInvalidate(GLcontext * ctx, struct gl_texture_object *tObj)
  92 {
  93    fxMesaContext fxMesa = FX_CONTEXT(ctx);
  94    tfxTexInfo *ti;
  95
  96    ti = fxTMGetTexInfo(tObj);
  97    if (ti->isInTM)
  98       fxTMMoveOutTM(fxMesa, tObj);      /* TO DO: SLOW but easy to write */
  99
 100    ti->validated = GL_FALSE;
 101    fxMesa->new_state |= FX_NEW_TEXTURING;
 102 }
 103
 104 static tfxTexInfo *
 105 fxAllocTexObjData(fxMesaContext fxMesa)
 106 {
 107    tfxTexInfo *ti;
 108
 109    if (!(ti = CALLOC(sizeof(tfxTexInfo)))) {
 110       fprintf(stderr, "%s: ERROR: out of memory !\n", __FUNCTION__);
 111       fxCloseHardware();
 112       exit(-1);
 113    }
 114
 115    ti->validated = GL_FALSE;
 116    ti->isInTM = GL_FALSE;
 117
 118    ti->whichTMU = FX_TMU_NONE;
 119
 120    ti->tm[FX_TMU0] = NULL;
 121    ti->tm[FX_TMU1] = NULL;
 122
 123    ti->minFilt = GR_TEXTUREFILTER_POINT_SAMPLED;
 124    ti->maxFilt = GR_TEXTUREFILTER_BILINEAR;
 125
 126    ti->sClamp = GR_TEXTURECLAMP_WRAP;
 127    ti->tClamp = GR_TEXTURECLAMP_WRAP;
 128
 129    ti->mmMode = GR_MIPMAP_NEAREST;
 130    ti->LODblend = FXFALSE;
 131
 132    return ti;
 133 }
 134
 135 void
 136 fxDDTexBind(GLcontext * ctx, GLenum target, struct gl_texture_object *tObj)
 137 {
 138    fxMesaContext fxMesa = FX_CONTEXT(ctx);
 139    tfxTexInfo *ti;
 140
 141    if (TDFX_DEBUG & VERBOSE_DRIVER) {
 142       fprintf(stderr, "%s(%d, %x)\n", __FUNCTION__, tObj->Name,
 143               (GLuint) tObj->DriverData);
 144    }
 145
 146    if (target != GL_TEXTURE_2D)
 147       return;
 148
 149    if (!tObj->DriverData) {
 150       tObj->DriverData = fxAllocTexObjData(fxMesa);
 151    }
 152
 153    ti = fxTMGetTexInfo(tObj);
 154
 155    fxMesa->texBindNumber++;
 156    ti->lastTimeUsed = fxMesa->texBindNumber;
 157
 158    fxMesa->new_state |= FX_NEW_TEXTURING;
 159 }
 160
 161 void
 162 fxDDTexEnv(GLcontext * ctx, GLenum target, GLenum pname,
 163            const GLfloat * param)
 164 {
 165    fxMesaContext fxMesa = FX_CONTEXT(ctx);
 166
 167    if (TDFX_DEBUG & VERBOSE_DRIVER) {
 168       if (param)
 169          fprintf(stderr, "%s(%x, %x)\n", __FUNCTION__, pname, (GLint) (*param));
 170       else
 171          fprintf(stderr, "%s(%x)\n", __FUNCTION__, pname);
 172    }
 173
 174    /* apply any lod biasing right now */
 175    if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
 176       grTexLodBiasValue(GR_TMU0, *param);
 177
 178       if (fxMesa->haveTwoTMUs) {
 179          grTexLodBiasValue(GR_TMU1, *param);
 180       }
 181
 182    }
 183
 184    fxMesa->new_state |= FX_NEW_TEXTURING;
 185 }
 186
 187 void
 188 fxDDTexParam(GLcontext * ctx, GLenum target, struct gl_texture_object *tObj,
 189              GLenum pname, const GLfloat * params)
 190 {
 191    fxMesaContext fxMesa = FX_CONTEXT(ctx);
 192    GLenum param = (GLenum) (GLint) params[0];
 193    tfxTexInfo *ti;
 194
 195    if (TDFX_DEBUG & VERBOSE_DRIVER) {
 196       fprintf(stderr, "fxDDTexParam(%d, %x, %s, %s)\n",
 197                       tObj->Name, (GLuint) tObj->DriverData,
 198                       _mesa_lookup_enum_by_nr(pname),
 199                       _mesa_lookup_enum_by_nr(param));
 200    }
 201
 202    if (target != GL_TEXTURE_2D)
 203       return;
 204
 205    if (!tObj->DriverData)
 206       tObj->DriverData = fxAllocTexObjData(fxMesa);
 207
 208    ti = fxTMGetTexInfo(tObj);
 209
 210    switch (pname) {
 211
 212    case GL_TEXTURE_MIN_FILTER:
 213       switch (param) {
 214       case GL_NEAREST:
 215          ti->mmMode = GR_MIPMAP_DISABLE;
 216          ti->minFilt = GR_TEXTUREFILTER_POINT_SAMPLED;
 217          ti->LODblend = FXFALSE;
 218          break;
 219       case GL_LINEAR:
 220          ti->mmMode = GR_MIPMAP_DISABLE;
 221          ti->minFilt = GR_TEXTUREFILTER_BILINEAR;
 222          ti->LODblend = FXFALSE;
 223          break;
 224       case GL_NEAREST_MIPMAP_LINEAR:
 225          if (fxMesa->haveTwoTMUs) {
 226             ti->mmMode = GR_MIPMAP_NEAREST;
 227             ti->LODblend = FXTRUE;
 228          }
 229          else {
 230             ti->mmMode = GR_MIPMAP_NEAREST_DITHER;
 231             ti->LODblend = FXFALSE;
 232          }
 233          ti->minFilt = GR_TEXTUREFILTER_POINT_SAMPLED;
 234          break; /* ZZZ: we may have to fall through here for V3 */
 235       case GL_NEAREST_MIPMAP_NEAREST:
 236          ti->mmMode = GR_MIPMAP_NEAREST;
 237          ti->minFilt = GR_TEXTUREFILTER_POINT_SAMPLED;
 238          ti->LODblend = FXFALSE;
 239          break;
 240       case GL_LINEAR_MIPMAP_LINEAR:
 241         /* ZZZ: HACK ALERT! trilinear is bugged! mipmap blending produce
 242                 incorrect filtered colors for the smallest mipmap levels. */
 243 #if 0
 244          if (fxMesa->haveTwoTMUs) {
 245             ti->mmMode = GR_MIPMAP_NEAREST;
 246             ti->LODblend = FXTRUE;
 247          }
 248          else {
 249             ti->mmMode = GR_MIPMAP_NEAREST_DITHER;
 250             ti->LODblend = FXFALSE;
 251          }
 252          ti->minFilt = GR_TEXTUREFILTER_BILINEAR;
 253          break; /* ZZZ: we may have to fall through here for V3 */
 254 #endif
 255       case GL_LINEAR_MIPMAP_NEAREST:
 256          ti->mmMode = GR_MIPMAP_NEAREST;
 257          ti->minFilt = GR_TEXTUREFILTER_BILINEAR;
 258          ti->LODblend = FXFALSE;
 259          break;
 260       default:
 261          break;
 262       }
 263       fxTexInvalidate(ctx, tObj);
 264       break;
 265
 266    case GL_TEXTURE_MAG_FILTER:
 267       switch (param) {
 268       case GL_NEAREST:
 269          ti->maxFilt = GR_TEXTUREFILTER_POINT_SAMPLED;
 270          break;
 271       case GL_LINEAR:
 272          ti->maxFilt = GR_TEXTUREFILTER_BILINEAR;
 273          break;
 274       default:
 275          break;
 276       }
 277       fxTexInvalidate(ctx, tObj);
 278       break;
 279
 280    case GL_TEXTURE_WRAP_S:
 281       switch (param) {
 282       case GL_MIRRORED_REPEAT:
 283          ti->sClamp = GR_TEXTURECLAMP_MIRROR_EXT;
 284          break;
 285       case GL_CLAMP_TO_EDGE: /* CLAMP discarding border */
 286       case GL_CLAMP:
 287          ti->sClamp = GR_TEXTURECLAMP_CLAMP;
 288          break;
 289       case GL_REPEAT:
 290          ti->sClamp = GR_TEXTURECLAMP_WRAP;
 291          break;
 292       default:
 293          break;
 294       }
 295       fxMesa->new_state |= FX_NEW_TEXTURING;
 296       break;
 297
 298    case GL_TEXTURE_WRAP_T:
 299       switch (param) {
 300       case GL_MIRRORED_REPEAT:
 301          ti->tClamp = GR_TEXTURECLAMP_MIRROR_EXT;
 302          break;
 303       case GL_CLAMP_TO_EDGE: /* CLAMP discarding border */
 304       case GL_CLAMP:
 305          ti->tClamp = GR_TEXTURECLAMP_CLAMP;
 306          break;
 307       case GL_REPEAT:
 308          ti->tClamp = GR_TEXTURECLAMP_WRAP;
 309          break;
 310       default:
 311          break;
 312       }
 313       fxMesa->new_state |= FX_NEW_TEXTURING;
 314       break;
 315
 316    case GL_TEXTURE_BORDER_COLOR:
 317       /* TO DO */
 318       break;
 319
 320    case GL_TEXTURE_MIN_LOD:
 321       /* TO DO */
 322       break;
 323    case GL_TEXTURE_MAX_LOD:
 324       /* TO DO */
 325       break;
 326    case GL_TEXTURE_BASE_LEVEL:
 327       fxTexInvalidate(ctx, tObj);
 328       break;
 329    case GL_TEXTURE_MAX_LEVEL:
 330       fxTexInvalidate(ctx, tObj);
 331       break;
 332
 333    default:
 334       break;
 335    }
 336 }
 337
 338 void
 339 fxDDTexDel(GLcontext * ctx, struct gl_texture_object *tObj)
 340 {
 341    fxMesaContext fxMesa = FX_CONTEXT(ctx);
 342    tfxTexInfo *ti = fxTMGetTexInfo(tObj);
 343
 344    if (TDFX_DEBUG & VERBOSE_DRIVER) {
 345       fprintf(stderr, "%s(%d, %p)\n", __FUNCTION__, tObj->Name, (void *) ti);
 346    }
 347
 348    if (!ti)
 349       return;
 350
 351    fxTMFreeTexture(fxMesa, tObj);
 352
 353    FREE(ti);
 354    tObj->DriverData = NULL;
 355 }
 356
 357
 358
 359 /*
 360  * Convert a gl_color_table texture palette to Glide's format.
 361  */
 362 static void
 363 convertPalette(FxU32 data[256], const struct gl_color_table *table)
 364 {
 365    const GLubyte *tableUB = (const GLubyte *) table->Table;
 366    GLint width = table->Size;
 367    FxU32 r, g, b, a;
 368    GLint i;
 369
 370    ASSERT(!table->FloatTable);
 371
 372    switch (table->Format) {
 373    case GL_INTENSITY:
 374       for (i = 0; i < width; i++) {
 375          r = tableUB[i];
 376          g = tableUB[i];
 377          b = tableUB[i];
 378          a = tableUB[i];
 379          data[i] = (a << 24) | (r << 16) | (g << 8) | b;
 380       }
 381       break;
 382    case GL_LUMINANCE:
 383       for (i = 0; i < width; i++) {
 384          r = tableUB[i];
 385          g = tableUB[i];
 386          b = tableUB[i];
 387          a = 255;
 388          data[i] = (a << 24) | (r << 16) | (g << 8) | b;
 389       }
 390       break;
 391    case GL_ALPHA:
 392       for (i = 0; i < width; i++) {
 393          r = g = b = 255;
 394          a = tableUB[i];
 395          data[i] = (a << 24) | (r << 16) | (g << 8) | b;
 396       }
 397       break;
 398    case GL_LUMINANCE_ALPHA:
 399       for (i = 0; i < width; i++) {
 400          r = g = b = tableUB[i * 2 + 0];
 401          a = tableUB[i * 2 + 1];
 402          data[i] = (a << 24) | (r << 16) | (g << 8) | b;
 403       }
 404       break;
 405    case GL_RGB:
 406       for (i = 0; i < width; i++) {
 407          r = tableUB[i * 3 + 0];
 408          g = tableUB[i * 3 + 1];
 409          b = tableUB[i * 3 + 2];
 410          a = 255;
 411          data[i] = (a << 24) | (r << 16) | (g << 8) | b;
 412       }
 413       break;
 414    case GL_RGBA:
 415       for (i = 0; i < width; i++) {
 416          r = tableUB[i * 4 + 0];
 417          g = tableUB[i * 4 + 1];
 418          b = tableUB[i * 4 + 2];
 419          a = tableUB[i * 4 + 3];
 420          data[i] = (a << 24) | (r << 16) | (g << 8) | b;
 421       }
 422       break;
 423    }
 424 }
 425
 426
 427 void
 428 fxDDTexPalette(GLcontext * ctx, struct gl_texture_object *tObj)
 429 {
 430    fxMesaContext fxMesa = FX_CONTEXT(ctx);
 431
 432    if (tObj) {
 433       /* per-texture palette */
 434       tfxTexInfo *ti;
 435       if (TDFX_DEBUG & VERBOSE_DRIVER) {
 436          fprintf(stderr, "%s(%d, %x)\n", __FUNCTION__,
 437                  tObj->Name, (GLuint) tObj->DriverData);
 438       }
 439       if (!tObj->DriverData)
 440          tObj->DriverData = fxAllocTexObjData(fxMesa);
 441       ti = fxTMGetTexInfo(tObj);
 442       convertPalette(ti->palette.data, &tObj->Palette);
 443       fxTexInvalidate(ctx, tObj);
 444    }
 445    else {
 446       /* global texture palette */
 447       if (TDFX_DEBUG & VERBOSE_DRIVER) {
 448          fprintf(stderr, "%s(global)\n", __FUNCTION__);
 449       }
 450       convertPalette(fxMesa->glbPalette.data, &ctx->Texture.Palette);
 451       fxMesa->new_state |= FX_NEW_TEXTURING;
 452    }
 453 }
 454
 455
 456 void
 457 fxDDTexUseGlbPalette(GLcontext * ctx, GLboolean state)
 458 {
 459    fxMesaContext fxMesa = FX_CONTEXT(ctx);
 460
 461    if (TDFX_DEBUG & VERBOSE_DRIVER) {
 462       fprintf(stderr, "%s(%d)\n", __FUNCTION__, state);
 463    }
 464
 465    if (state) {
 466       fxMesa->haveGlobalPaletteTexture = 1;
 467
 468       grTexDownloadTable(GR_TEXTABLE_PALETTE, &(fxMesa->glbPalette));
 469    }
 470    else {
 471       fxMesa->haveGlobalPaletteTexture = 0;
 472
 473       if ((ctx->Texture.Unit[0]._Current == ctx->Texture.Unit[0].Current2D) &&
 474           (ctx->Texture.Unit[0]._Current != NULL)) {
 475          struct gl_texture_object *tObj = ctx->Texture.Unit[0]._Current;
 476
 477          if (!tObj->DriverData)
 478             tObj->DriverData = fxAllocTexObjData(fxMesa);
 479
 480          fxTexInvalidate(ctx, tObj);
 481       }
 482    }
 483 }
 484
 485
 486 static int
 487 logbase2(int n)
 488 {
 489    GLint i = 1;
 490    GLint log2 = 0;
 491
 492    if (n < 0) {
 493       return -1;
 494    }
 495
 496    while (n > i) {
 497       i *= 2;
 498       log2++;
 499    }
 500    if (i != n) {
 501       return -1;
 502    }
 503    else {
 504       return log2;
 505    }
 506 }
 507
 508
 509 int
 510 fxTexGetInfo(int w, int h, GrLOD_t * lodlevel, GrAspectRatio_t * ar,
 511              float *sscale, float *tscale,
 512              int *wscale, int *hscale)
 513 {
 514    /* [koolsmoky] */
 515    static GrLOD_t lod[12] = {
 516           GR_LOD_LOG2_1,
 517           GR_LOD_LOG2_2,
 518           GR_LOD_LOG2_4,
 519           GR_LOD_LOG2_8,
 520           GR_LOD_LOG2_16,
 521           GR_LOD_LOG2_32,
 522           GR_LOD_LOG2_64,
 523           GR_LOD_LOG2_128,
 524           GR_LOD_LOG2_256,
 525           GR_LOD_LOG2_512,
 526           GR_LOD_LOG2_1024,
 527           GR_LOD_LOG2_2048
 528    };
 529
 530    int logw, logh, ws, hs;
 531    GrLOD_t l;
 532    GrAspectRatio_t aspectratio;
 533    float s, t;
 534
 535    logw = logbase2(w);
 536    logh = logbase2(h);
 537
 538    switch (logw - logh) {
 539    case 0:
 540       aspectratio = GR_ASPECT_LOG2_1x1;
 541       l = lod[logw];
 542       s = t = 256.0f;
 543       ws = hs = 1;
 544       break;
 545    case 1:
 546       aspectratio = GR_ASPECT_LOG2_2x1;
 547       l = lod[logw];
 548       s = 256.0f;
 549       t = 128.0f;
 550       ws = 1;
 551       hs = 1;
 552       break;
 553    case 2:
 554       aspectratio = GR_ASPECT_LOG2_4x1;
 555       l = lod[logw];
 556       s = 256.0f;
 557       t = 64.0f;
 558       ws = 1;
 559       hs = 1;
 560       break;
 561    case 3:
 562       aspectratio = GR_ASPECT_LOG2_8x1;
 563       l = lod[logw];
 564       s = 256.0f;
 565       t = 32.0f;
 566       ws = 1;
 567       hs = 1;
 568       break;
 569    case -1:
 570       aspectratio = GR_ASPECT_LOG2_1x2;
 571       l = lod[logh];
 572       s = 128.0f;
 573       t = 256.0f;
 574       ws = 1;
 575       hs = 1;
 576       break;
 577    case -2:
 578       aspectratio = GR_ASPECT_LOG2_1x4;
 579       l = lod[logh];
 580       s = 64.0f;
 581       t = 256.0f;
 582       ws = 1;
 583       hs = 1;
 584       break;
 585    case -3:
 586       aspectratio = GR_ASPECT_LOG2_1x8;
 587       l = lod[logh];
 588       s = 32.0f;
 589       t = 256.0f;
 590       ws = 1;
 591       hs = 1;
 592       break;
 593    default:
 594       if ((logw - logh) > 3) {
 595          aspectratio = GR_ASPECT_LOG2_8x1;
 596          l = lod[logw];
 597          s = 256.0f;
 598          t = 32.0f;
 599          ws = 1;
 600          hs = 1 << (logw - logh - 3);
 601       } else /*if ((logw - logh) < -3)*/ {
 602          aspectratio = GR_ASPECT_LOG2_1x8;
 603          l = lod[logh];
 604          s = 32.0f;
 605          t = 256.0f;
 606          ws = 1 << (logh - logw - 3);
 607          hs = 1;
 608       }
 609    }
 610
 611    if (lodlevel)
 612       (*lodlevel) = l;
 613
 614    if (ar)
 615       (*ar) = aspectratio;
 616
 617    if (sscale)
 618       (*sscale) = s;
 619
 620    if (tscale)
 621       (*tscale) = t;
 622
 623    if (wscale)
 624       (*wscale) = ws;
 625
 626    if (hscale)
 627       (*hscale) = hs;
 628
 629
 630    return 1;
 631 }
 632
 633 static GLboolean
 634 fxIsTexSupported(GLenum target, GLint internalFormat,
 635                  const struct gl_texture_image *image)
 636 {
 637    if (target != GL_TEXTURE_2D)
 638       return GL_FALSE;
 639
 640    if (!fxTexGetInfo(image->Width, image->Height, NULL, NULL, NULL, NULL, NULL, NULL))
 641        return GL_FALSE;
 642
 643    if (image->Border > 0)
 644       return GL_FALSE;
 645
 646    return GL_TRUE;
 647 }
 648
 649
 650 /**********************************************************************/
 651 /**** NEW TEXTURE IMAGE FUNCTIONS                                  ****/
 652 /**********************************************************************/
 653
 654 /* Texel-fetch functions for software texturing and glGetTexImage().
 655  * We should have been able to use some "standard" fetch functions (which
 656  * may get defined in texutil.c) but we have to account for scaled texture
 657  * images on tdfx hardware (the 8:1 aspect ratio limit).
 658  * Hence, we need special functions here.
 659  */
 660
 661 static void
 662 fetch_intensity8(const struct gl_texture_image *texImage,
 663                  GLint i, GLint j, GLint k, GLvoid * texelOut)
 664 {
 665    GLchan *rgba = (GLchan *) texelOut;
 666    const tfxMipMapLevel *mml = FX_MIPMAP_DATA(texImage);
 667    const GLubyte *texel;
 668
 669    i = i * mml->wScale;
 670    j = j * mml->hScale;
 671
 672    texel = ((GLubyte *) texImage->Data) + j * mml->width + i;
 673    rgba[RCOMP] = *texel;
 674    rgba[GCOMP] = *texel;
 675    rgba[BCOMP] = *texel;
 676    rgba[ACOMP] = *texel;
 677 }
 678
 679
 680 static void
 681 fetch_luminance8(const struct gl_texture_image *texImage,
 682                  GLint i, GLint j, GLint k, GLvoid * texelOut)
 683 {
 684    GLchan *rgba = (GLchan *) texelOut;
 685    const tfxMipMapLevel *mml = FX_MIPMAP_DATA(texImage);
 686    const GLubyte *texel;
 687
 688    i = i * mml->wScale;
 689    j = j * mml->hScale;
 690
 691    texel = ((GLubyte *) texImage->Data) + j * mml->width + i;
 692    rgba[RCOMP] = *texel;
 693    rgba[GCOMP] = *texel;
 694    rgba[BCOMP] = *texel;
 695    rgba[ACOMP] = 255;
 696 }
 697
 698
 699 static void
 700 fetch_alpha8(const struct gl_texture_image *texImage,
 701              GLint i, GLint j, GLint k, GLvoid * texelOut)
 702 {
 703    GLchan *rgba = (GLchan *) texelOut;
 704    const tfxMipMapLevel *mml = FX_MIPMAP_DATA(texImage);
 705    const GLubyte *texel;
 706
 707    i = i * mml->wScale;
 708    j = j * mml->hScale;
 709    i = i * mml->width / texImage->Width;
 710    j = j * mml->height / texImage->Height;
 711
 712    texel = ((GLubyte *) texImage->Data) + j * mml->width + i;
 713    rgba[RCOMP] = 255;
 714    rgba[GCOMP] = 255;
 715    rgba[BCOMP] = 255;
 716    rgba[ACOMP] = *texel;
 717 }
 718
 719
 720 static void
 721 fetch_index8(const struct gl_texture_image *texImage,
 722              GLint i, GLint j, GLint k, GLvoid * texelOut)
 723 {
 724    GLchan *indexOut = (GLchan *) texelOut;
 725    const tfxMipMapLevel *mml = FX_MIPMAP_DATA(texImage);
 726    const GLubyte *texel;
 727
 728    i = i * mml->wScale;
 729    j = j * mml->hScale;
 730    i = i * mml->width / texImage->Width;
 731    j = j * mml->height / texImage->Height;
 732
 733    texel = ((GLubyte *) texImage->Data) + j * mml->width + i;
 734    *indexOut = *texel;
 735 }
 736
 737
 738 static void
 739 fetch_luminance8_alpha8(const struct gl_texture_image *texImage,
 740                         GLint i, GLint j, GLint k, GLvoid * texelOut)
 741 {
 742    GLchan *rgba = (GLchan *) texelOut;
 743    const tfxMipMapLevel *mml = FX_MIPMAP_DATA(texImage);
 744    const GLubyte *texel;
 745
 746    i = i * mml->wScale;
 747    j = j * mml->hScale;
 748
 749    texel = ((GLubyte *) texImage->Data) + (j * mml->width + i) * 2;
 750    rgba[RCOMP] = texel[0];
 751    rgba[GCOMP] = texel[0];
 752    rgba[BCOMP] = texel[0];
 753    rgba[ACOMP] = texel[1];
 754 }
 755
 756
 757 static void
 758 fetch_r5g6b5(const struct gl_texture_image *texImage,
 759              GLint i, GLint j, GLint k, GLvoid * texelOut)
 760 {
 761    GLchan *rgba = (GLchan *) texelOut;
 762    const tfxMipMapLevel *mml = FX_MIPMAP_DATA(texImage);
 763    const GLushort *texel;
 764
 765    i = i * mml->wScale;
 766    j = j * mml->hScale;
 767
 768    texel = ((GLushort *) texImage->Data) + j * mml->width + i;
 769    rgba[RCOMP] = FX_rgb_scale_5[(*texel >> 11) & 0x1F];
 770    rgba[GCOMP] = FX_rgb_scale_6[(*texel >>  5) & 0x3F];
 771    rgba[BCOMP] = FX_rgb_scale_5[ *texel        & 0x1F];
 772    rgba[ACOMP] = 255;
 773 }
 774
 775
 776 static void
 777 fetch_r4g4b4a4(const struct gl_texture_image *texImage,
 778                GLint i, GLint j, GLint k, GLvoid * texelOut)
 779 {
 780    GLchan *rgba = (GLchan *) texelOut;
 781    const tfxMipMapLevel *mml = FX_MIPMAP_DATA(texImage);
 782    const GLushort *texel;
 783
 784    i = i * mml->wScale;
 785    j = j * mml->hScale;
 786
 787    texel = ((GLushort *) texImage->Data) + j * mml->width + i;
 788    rgba[RCOMP] = FX_rgb_scale_4[(*texel >> 12) & 0xF];
 789    rgba[GCOMP] = FX_rgb_scale_4[(*texel >>  8) & 0xF];
 790    rgba[BCOMP] = FX_rgb_scale_4[(*texel >>  4) & 0xF];
 791    rgba[ACOMP] = FX_rgb_scale_4[ *texel        & 0xF];
 792 }
 793
 794
 795 static void
 796 fetch_r5g5b5a1(const struct gl_texture_image *texImage,
 797                GLint i, GLint j, GLint k, GLvoid * texelOut)
 798 {
 799    GLchan *rgba = (GLchan *) texelOut;
 800    const tfxMipMapLevel *mml = FX_MIPMAP_DATA(texImage);
 801    const GLushort *texel;
 802
 803    i = i * mml->wScale;
 804    j = j * mml->hScale;
 805
 806    texel = ((GLushort *) texImage->Data) + j * mml->width + i;
 807    rgba[RCOMP] = FX_rgb_scale_5[(*texel >> 11) & 0x1F];
 808    rgba[GCOMP] = FX_rgb_scale_5[(*texel >>  6) & 0x1F];
 809    rgba[BCOMP] = FX_rgb_scale_5[(*texel >>  1) & 0x1F];
 810    rgba[ACOMP] = ((*texel) & 0x01) * 255;
 811 }
 812
 813
 814 static void
 815 fetch_a8r8g8b8(const struct gl_texture_image *texImage,
 816                GLint i, GLint j, GLint k, GLvoid * texelOut)
 817 {
 818     GLchan *rgba = (GLchan *) texelOut;
 819     const tfxMipMapLevel *mml = FX_MIPMAP_DATA(texImage);
 820     const GLuint *texel;
 821
 822     i = i * mml->wScale;
 823     j = j * mml->hScale;
 824
 825     texel = ((GLuint *) texImage->Data) + j * mml->width + i;
 826     rgba[RCOMP] = (((*texel) >> 16) & 0xff);
 827     rgba[GCOMP] = (((*texel) >>  8) & 0xff);
 828     rgba[BCOMP] = (((*texel)      ) & 0xff);
 829     rgba[ACOMP] = (((*texel) >> 24) & 0xff);
 830 }
 831
 832
 833 static void
 834 PrintTexture(int w, int h, int c, const GLubyte * data)
 835 {
 836    int i, j;
 837    for (i = 0; i < h; i++) {
 838       for (j = 0; j < w; j++) {
 839          if (c == 2)
 840             fprintf(stderr, "%02x %02x  ", data[0], data[1]);
 841          else if (c == 3)
 842             fprintf(stderr, "%02x %02x %02x  ", data[0], data[1], data[2]);
 843          data += c;
 844       }
 845       fprintf(stderr, "\n");
 846    }
 847 }
 848
 849
 850 const struct gl_texture_format *
 851 fxDDChooseTextureFormat( GLcontext *ctx, GLint internalFormat,
 852                          GLenum srcFormat, GLenum srcType )
 853 {
 854    fxMesaContext fxMesa = FX_CONTEXT(ctx);
 855    GLboolean allow32bpt = fxMesa->HaveTexFmt;
 856
 857    if (TDFX_DEBUG & VERBOSE_TEXTURE) {
 858       fprintf(stderr, "fxDDChooseTextureFormat(...)\n");
 859    }
 860
 861    switch (internalFormat) {
 862    case GL_INTENSITY:
 863    case GL_INTENSITY4:
 864    case GL_INTENSITY8:
 865    case GL_INTENSITY12:
 866    case GL_INTENSITY16:
 867    case GL_COMPRESSED_INTENSITY:
 868       return &_mesa_texformat_i8;
 869    case 1:
 870    case GL_LUMINANCE:
 871    case GL_LUMINANCE4:
 872    case GL_LUMINANCE8:
 873    case GL_LUMINANCE12:
 874    case GL_LUMINANCE16:
 875    case GL_COMPRESSED_LUMINANCE:
 876       return &_mesa_texformat_l8;
 877    case GL_ALPHA:
 878    case GL_ALPHA4:
 879    case GL_ALPHA8:
 880    case GL_ALPHA12:
 881    case GL_ALPHA16:
 882    case GL_COMPRESSED_ALPHA:
 883       return &_mesa_texformat_a8;
 884    case GL_COLOR_INDEX:
 885    case GL_COLOR_INDEX1_EXT:
 886    case GL_COLOR_INDEX2_EXT:
 887    case GL_COLOR_INDEX4_EXT:
 888    case GL_COLOR_INDEX8_EXT:
 889    case GL_COLOR_INDEX12_EXT:
 890    case GL_COLOR_INDEX16_EXT:
 891       return &_mesa_texformat_ci8;
 892    case 2:
 893    case GL_LUMINANCE_ALPHA:
 894    case GL_LUMINANCE4_ALPHA4:
 895    case GL_LUMINANCE6_ALPHA2:
 896    case GL_LUMINANCE8_ALPHA8:
 897    case GL_LUMINANCE12_ALPHA4:
 898    case GL_LUMINANCE12_ALPHA12:
 899    case GL_LUMINANCE16_ALPHA16:
 900    case GL_COMPRESSED_LUMINANCE_ALPHA:
 901       return &_mesa_texformat_al88;
 902    case GL_R3_G3_B2:
 903    case GL_RGB4:
 904    case GL_RGB5:
 905       return &_mesa_texformat_rgb565;
 906    case 3:
 907    case GL_RGB:
 908    case GL_COMPRESSED_RGB:
 909      if ( srcFormat == GL_RGB && srcType == GL_UNSIGNED_SHORT_5_6_5 ) {
 910        return &_mesa_texformat_rgb565;
 911      }
 912      /* intentional fall through */
 913    case GL_RGB8:
 914    case GL_RGB10:
 915    case GL_RGB12:
 916    case GL_RGB16:
 917       return (allow32bpt) ? &_mesa_texformat_argb8888
 918                           : &_mesa_texformat_rgb565;
 919    case GL_RGBA2:
 920    case GL_RGBA4:
 921       return &_mesa_texformat_argb4444;
 922    case 4:
 923    case GL_RGBA:
 924    case GL_COMPRESSED_RGBA:
 925      if ( srcFormat == GL_BGRA ) {
 926        if ( srcType == GL_UNSIGNED_INT_8_8_8_8_REV ) {
 927          return &_mesa_texformat_argb8888;
 928        }
 929        else if ( srcType == GL_UNSIGNED_SHORT_4_4_4_4_REV ) {
 930          return &_mesa_texformat_argb4444;
 931        }
 932        else if ( srcType == GL_UNSIGNED_SHORT_1_5_5_5_REV ) {
 933          return &_mesa_texformat_argb1555;
 934        }
 935      }
 936      /* intentional fall through */
 937    case GL_RGBA8:
 938    case GL_RGB10_A2:
 939    case GL_RGBA12:
 940    case GL_RGBA16:
 941       return (allow32bpt) ? &_mesa_texformat_argb8888
 942                           : &_mesa_texformat_argb4444;
 943    case GL_RGB5_A1:
 944       return &_mesa_texformat_argb1555;
 945 #if 0
 946    /* GL_EXT_texture_compression_s3tc */
 947    case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
 948       return &_mesa_texformat_rgb_dxt1;
 949    case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
 950       return &_mesa_texformat_rgba_dxt1;
 951    case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
 952       return &_mesa_texformat_rgba_dxt3;
 953    case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
 954       return &_mesa_texformat_rgba_dxt5;
 955    /*case GL_COMPRESSED_RGB_FXT1_3DFX:
 956      case GL_COMPRESSED_RGBA_FXT1_3DFX:
 957       return blah;*/
 958 #endif
 959    default:
 960       _mesa_problem(NULL, "unexpected format in fxDDChooseTextureFormat");
 961       return NULL;
 962    }
 963 }
 964
 965
 966 static GrTextureFormat_t
 967 fxGlideFormat(GLint mesaFormat)
 968 {
 969    switch (mesaFormat) {
 970    case MESA_FORMAT_I8:
 971       return GR_TEXFMT_ALPHA_8;
 972    case MESA_FORMAT_A8:
 973       return GR_TEXFMT_ALPHA_8;
 974    case MESA_FORMAT_L8:
 975       return GR_TEXFMT_INTENSITY_8;
 976    case MESA_FORMAT_CI8:
 977       return GR_TEXFMT_P_8;
 978    case MESA_FORMAT_AL88:
 979       return GR_TEXFMT_ALPHA_INTENSITY_88;
 980    case MESA_FORMAT_RGB565:
 981       return GR_TEXFMT_RGB_565;
 982    case MESA_FORMAT_ARGB4444:
 983       return GR_TEXFMT_ARGB_4444;
 984    case MESA_FORMAT_ARGB1555:
 985       return GR_TEXFMT_ARGB_1555;
 986 #if 1 /* [koolsmoky] getting ready for 32bpp textures */
 987    case MESA_FORMAT_ARGB8888:
 988       return GR_TEXFMT_ARGB_8888;
 989 #endif
 990 #if 0
 991    case MESA_FORMAT_RGB_DXT1:
 992    case MESA_FORMAT_RGBA_DXT1:
 993      return GR_TEXFMT_ARGB_CMP_DXT1;
 994    case MESA_FORMAT_RGBA_DXT3:
 995      return GR_TEXFMT_ARGB_CMP_DXT3;
 996    case MESA_FORMAT_RGBA_DXT5:
 997      return GR_TEXFMT_ARGB_CMP_DXT5;
 998    /*case MESA_FORMAT_ARGB_CMP_FXT1:
 999      return GR_TEXFMT_ARGB_CMP_FXT1;
1000    case MESA_FORMAT_RGB_CMP_FXT1:
1001      return GL_COMPRESSED_RGBA_FXT1_3DFX;*/
1002 #endif
1003    default:
1004       _mesa_problem(NULL, "Unexpected format in fxGlideFormat");
1005       return 0;
1006    }
1007 }
1008
1009
1010 static FetchTexelFunc
1011 fxFetchFunction(GLint mesaFormat)
1012 {
1013    switch (mesaFormat) {
1014    case MESA_FORMAT_I8:
1015       return fetch_intensity8;
1016    case MESA_FORMAT_A8:
1017       return fetch_alpha8;
1018    case MESA_FORMAT_L8:
1019       return fetch_luminance8;
1020    case MESA_FORMAT_CI8:
1021       return fetch_index8;
1022    case MESA_FORMAT_AL88:
1023       return fetch_luminance8_alpha8;
1024    case MESA_FORMAT_RGB565:
1025       return fetch_r5g6b5;
1026    case MESA_FORMAT_ARGB4444:
1027       return fetch_r4g4b4a4;
1028    case MESA_FORMAT_ARGB1555:
1029       return fetch_r5g5b5a1;
1030 #if 1 /* [koolsmoky] getting ready for 32bpp textures */
1031    case MESA_FORMAT_ARGB8888:
1032       return fetch_a8r8g8b8;
1033 #endif
1034 #if 0
1035    case MESA_FORMAT_RGB_DXT1:
1036    case MESA_FORMAT_RGBA_DXT1:
1037    case MESA_FORMAT_RGBA_DXT3:
1038    case MESA_FORMAT_RGBA_DXT5:
1039      return fetch_r4g4b4a4;
1040 #endif
1041    default:
1042       _mesa_problem(NULL, "Unexpected format in fxFetchFunction");
1043       return NULL;
1044    }
1045 }
1046
1047 void
1048 fxDDTexImage2D(GLcontext * ctx, GLenum target, GLint level,
1049                GLint internalFormat, GLint width, GLint height, GLint border,
1050                GLenum format, GLenum type, const GLvoid * pixels,
1051                const struct gl_pixelstore_attrib *packing,
1052                struct gl_texture_object *texObj,
1053                struct gl_texture_image *texImage)
1054 {
1055    fxMesaContext fxMesa = FX_CONTEXT(ctx);
1056    tfxTexInfo *ti;
1057    tfxMipMapLevel *mml;
1058    GLint texelBytes;
1059
1060    if (TDFX_DEBUG & VERBOSE_TEXTURE) {
1061        fprintf(stderr, "fxDDTexImage2D: id=%d int 0x%x  format 0x%x  type 0x%x  %dx%d\n",
1062                        texObj->Name, texImage->IntFormat, format, type,
1063                        texImage->Width, texImage->Height);
1064    }
1065
1066    if (!fxIsTexSupported(target, internalFormat, texImage)) {
1067       _mesa_problem(NULL, "fx Driver: unsupported texture in fxDDTexImg()\n");
1068       return;
1069    }
1070
1071    if (!texObj->DriverData) {
1072       texObj->DriverData = fxAllocTexObjData(fxMesa);
1073       if (!texObj->DriverData) {
1074          _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage2D");
1075          return;
1076       }
1077    }
1078    ti = fxTMGetTexInfo(texObj);
1079
1080    if (!texImage->DriverData) {
1081       texImage->DriverData = CALLOC(sizeof(tfxMipMapLevel));
1082       if (!texImage->DriverData) {
1083          _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage2D");
1084          return;
1085       }
1086    }
1087    mml = FX_MIPMAP_DATA(texImage);
1088
1089    fxTexGetInfo(width, height, NULL, NULL, NULL, NULL,
1090                 &mml->wScale, &mml->hScale);
1091
1092    mml->width = width * mml->wScale;
1093    mml->height = height * mml->hScale;
1094
1095
1096    /* choose the texture format */
1097    assert(ctx->Driver.ChooseTextureFormat);
1098    texImage->TexFormat = (*ctx->Driver.ChooseTextureFormat)(ctx,
1099                                           internalFormat, format, type);
1100    assert(texImage->TexFormat);
1101    texelBytes = texImage->TexFormat->TexelBytes;
1102    /*if (!fxMesa->HaveTexFmt) assert(texelBytes == 1 || texelBytes == 2);*/
1103
1104    if (mml->wScale != 1 || mml->hScale != 1) {
1105       /* rescale image to overcome 1:8 aspect limitation */
1106       GLvoid *tempImage;
1107       tempImage = MALLOC(width * height * texelBytes);
1108       if (!tempImage) {
1109          _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage2D");
1110          return;
1111       }
1112       /* unpack image, apply transfer ops and store in tempImage */
1113       _mesa_transfer_teximage(ctx, 2, texImage->Format,
1114                               texImage->TexFormat,
1115                               tempImage,
1116                               width, height, 1, 0, 0, 0,
1117                               width * texelBytes,
1118                               0, /* dstImageStride */
1119                               format, type, pixels, packing);
1120       assert(!texImage->Data);
1121       texImage->Data = MESA_PBUFFER_ALLOC(mml->width * mml->height * texelBytes);
1122       if (!texImage->Data) {
1123          _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage2D");
1124          FREE(tempImage);
1125          return;
1126       }
1127       _mesa_rescale_teximage2d(texelBytes,
1128                                mml->width * texelBytes, /* dst stride */
1129                                width, height,
1130                                mml->width, mml->height,
1131                                tempImage /*src*/, texImage->Data /*dst*/ );
1132       FREE(tempImage);
1133    }
1134    else {
1135       /* no rescaling needed */
1136       assert(!texImage->Data);
1137       texImage->Data = MESA_PBUFFER_ALLOC(mml->width * mml->height * texelBytes);
1138       if (!texImage->Data) {
1139          _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage2D");
1140          return;
1141       }
1142       /* unpack image, apply transfer ops and store in texImage->Data */
1143       _mesa_transfer_teximage(ctx, 2, texImage->Format,
1144                               texImage->TexFormat, texImage->Data,
1145                               width, height, 1, 0, 0, 0,
1146                               texImage->Width * texelBytes,
1147                               0, /* dstImageStride */
1148                               format, type, pixels, packing);
1149    }
1150
1151    mml->glideFormat = fxGlideFormat(texImage->TexFormat->MesaFormat);
1152    ti->info.format = mml->glideFormat;
1153    texImage->FetchTexel = fxFetchFunction(texImage->TexFormat->MesaFormat);
1154
1155    /* [dBorca]
1156     * Hack alert: unsure...
1157     */
1158    if (!(fxMesa->new_state & FX_NEW_TEXTURING) && ti->validated && ti->isInTM) {
1159       /*fprintf(stderr, "reloadmipmaplevels\n"); */
1160       fxTMReloadMipMapLevel(fxMesa, texObj, level);
1161    }
1162    else {
1163       /*fprintf(stderr, "invalidate2\n"); */
1164       fxTexInvalidate(ctx, texObj);
1165    }
1166 }
1167
1168
1169 void
1170 fxDDTexSubImage2D(GLcontext * ctx, GLenum target, GLint level,
1171                   GLint xoffset, GLint yoffset,
1172                   GLsizei width, GLsizei height,
1173                   GLenum format, GLenum type, const GLvoid * pixels,
1174                   const struct gl_pixelstore_attrib *packing,
1175                   struct gl_texture_object *texObj,
1176                   struct gl_texture_image *texImage)
1177 {
1178    fxMesaContext fxMesa = FX_CONTEXT(ctx);
1179    tfxTexInfo *ti;
1180    tfxMipMapLevel *mml;
1181    GLint texelBytes;
1182
1183    if (TDFX_DEBUG & VERBOSE_TEXTURE) {
1184        fprintf(stderr, "fxDDTexSubImage2D: id=%d\n", texObj->Name);
1185    }
1186
1187    if (!texObj->DriverData) {
1188       _mesa_problem(ctx, "problem in fxDDTexSubImage2D");
1189       return;
1190    }
1191
1192    ti = fxTMGetTexInfo(texObj);
1193    assert(ti);
1194    mml = FX_MIPMAP_DATA(texImage);
1195    assert(mml);
1196
1197    assert(texImage->Data);      /* must have an existing texture image! */
1198    assert(texImage->Format);
1199
1200    texelBytes = texImage->TexFormat->TexelBytes;
1201
1202    if (mml->wScale != 1 || mml->hScale != 1) {
1203       /* need to rescale subimage to match mipmap level's rescale factors */
1204       const GLint newWidth = width * mml->wScale;
1205       const GLint newHeight = height * mml->hScale;
1206       GLvoid *tempImage;
1207       GLubyte *destAddr;
1208       tempImage = MALLOC(width * height * texelBytes);
1209       if (!tempImage) {
1210          _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage2D");
1211          return;
1212       }
1213
1214       _mesa_transfer_teximage(ctx, 2, texImage->Format,/* Tex int format */
1215                               texImage->TexFormat,     /* dest format */
1216                               (GLubyte *) tempImage,   /* dest */
1217                               width, height, 1,        /* subimage size */
1218                               0, 0, 0,                 /* subimage pos */
1219                               width * texelBytes,      /* dest row stride */
1220                               0,                       /* dst image stride */
1221                               format, type, pixels, packing);
1222
1223       /* now rescale */
1224       /* compute address of dest subimage within the overal tex image */
1225       destAddr = (GLubyte *) texImage->Data
1226          + (yoffset * mml->hScale * mml->width
1227             + xoffset * mml->wScale) * texelBytes;
1228
1229       _mesa_rescale_teximage2d(texelBytes,
1230                                mml->width * texelBytes, /* dst stride */
1231                                width, height,
1232                                newWidth, newHeight,
1233                                tempImage, destAddr);
1234
1235       FREE(tempImage);
1236    }
1237    else {
1238       /* no rescaling needed */
1239       _mesa_transfer_teximage(ctx, 2, texImage->Format,  /* Tex int format */
1240                               texImage->TexFormat,       /* dest format */
1241                               (GLubyte *) texImage->Data,/* dest */
1242                               width, height, 1,          /* subimage size */
1243                               xoffset, yoffset, 0,       /* subimage pos */
1244                               mml->width * texelBytes,   /* dest row stride */
1245                               0,                         /* dst image stride */
1246                               format, type, pixels, packing);
1247    }
1248
1249    /* [dBorca]
1250     * Hack alert: unsure...
1251     */
1252    if (!(fxMesa->new_state & FX_NEW_TEXTURING) && ti->validated && ti->isInTM)
1253       fxTMReloadMipMapLevel(fxMesa, texObj, level);
1254    else
1255       fxTexInvalidate(ctx, texObj);
1256 }
1257
1258
1259 #else /* FX */
1260
1261 /*
1262  * Need this to provide at least one external definition.
1263  */
1264
1265 extern int gl_fx_dummy_function_ddtex(void);
1266 int
1267 gl_fx_dummy_function_ddtex(void)
1268 {
1269    return 0;
1270 }
1271
1272 #endif /* FX */