src/mesa/drivers/dri/i915/i915_texstate.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "glheader.h"
  29 #include "macros.h"
  30 #include "mtypes.h"
  31 #include "simple_list.h"
  32 #include "enums.h"
  33 #include "texformat.h"
  34 #include "texstore.h"
  35
  36 #include "mm.h"
  37
  38 #include "intel_screen.h"
  39 #include "intel_ioctl.h"
  40 #include "intel_tex.h"
  41
  42 #include "i915_context.h"
  43 #include "i915_reg.h"
  44
  45 static GLint initial_offsets[6][2] = { {0,0},
  46                                        {0,2},
  47                                        {1,0},
  48                                        {1,2},
  49                                        {1,1},
  50                                        {1,3} };
  51
  52
  53 static GLint step_offsets[6][2] = { {0,2},
  54                                     {0,2},
  55                                     {-1,2},
  56                                     {-1,2},
  57                                     {-1,1},
  58                                     {-1,1} };
  59
  60
  61 #define I915_TEX_UNIT_ENABLED(unit)             (1<<unit)
  62
  63 static void i915LayoutTextureImages( i915ContextPtr i915,
  64                                      struct gl_texture_object *tObj )
  65 {
  66    const struct gl_texture_image *baseImage = tObj->Image[0][tObj->BaseLevel];
  67    i915TextureObjectPtr t = (i915TextureObjectPtr) tObj->DriverData;
  68    GLint firstLevel, lastLevel, numLevels;
  69    GLint i, total_height, pitch;
  70
  71    /* Compute which mipmap levels we really want to send to the hardware.
  72     */
  73    driCalculateTextureFirstLastLevel( (driTextureObject *) t );
  74
  75    /* Figure out the amount of memory required to hold all the mipmap
  76     * levels.  Choose the smallest pitch to accomodate the largest
  77     * mipmap:
  78     */
  79    firstLevel = t->intel.base.firstLevel;
  80    lastLevel = t->intel.base.lastLevel;
  81    numLevels = lastLevel - firstLevel + 1;
  82
  83
  84
  85    /* All images must be loaded at this pitch.  Count the number of
  86     * lines required:
  87     */
  88    switch (tObj->Target) {
  89    case GL_TEXTURE_CUBE_MAP: {
  90       const GLuint dim = tObj->Image[0][firstLevel]->Width;
  91       GLuint face;
  92
  93       pitch = dim * t->intel.texelBytes;
  94       pitch *= 2;               /* double pitch for cube layouts */
  95       pitch = (pitch + 3) & ~3;
  96
  97       total_height = dim * 4;
  98
  99       for ( face = 0 ; face < 6 ; face++) {
 100          GLuint x = initial_offsets[face][0] * dim;
 101          GLuint y = initial_offsets[face][1] * dim;
 102          GLuint d = dim;
 103
 104          t->intel.base.dirty_images[face] = ~0;
 105
 106          assert(tObj->Image[face][firstLevel]->Width == dim);
 107          assert(tObj->Image[face][firstLevel]->Height == dim);
 108
 109          for (i = 0; i < numLevels; i++) {
 110             t->intel.image[face][i].image = tObj->Image[face][firstLevel + i];
 111             if (!t->intel.image[face][i].image) {
 112                fprintf(stderr, "no image %d %d\n", face, i);
 113                break;           /* can't happen */
 114             }
 115
 116             t->intel.image[face][i].offset =
 117                y * pitch + x * t->intel.texelBytes;
 118             t->intel.image[face][i].internalFormat = baseImage->_BaseFormat;
 119
 120             d >>= 1;
 121             x += step_offsets[face][0] * d;
 122             y += step_offsets[face][1] * d;
 123          }
 124       }
 125       break;
 126    }
 127    case GL_TEXTURE_3D: {
 128       GLuint virtual_height;
 129       GLuint tmp_numLevels = numLevels;
 130       pitch = tObj->Image[0][firstLevel]->Width * t->intel.texelBytes;
 131       pitch = (pitch + 3) & ~3;
 132       t->intel.base.dirty_images[0] = ~0;
 133
 134       /* Calculate the size of a single slice.  Hardware demands a
 135        * minimum of 8 mipmaps, some of which might ultimately not be
 136        * used:
 137        */
 138       if (tmp_numLevels < 9)
 139          tmp_numLevels = 9;
 140
 141       virtual_height = tObj->Image[0][firstLevel]->Height;
 142
 143       for ( total_height = i = 0 ; i < tmp_numLevels ; i++ ) {
 144          t->intel.image[0][i].image = tObj->Image[0][firstLevel + i];
 145          if (t->intel.image[0][i].image) {
 146             t->intel.image[0][i].offset = total_height * pitch;
 147             t->intel.image[0][i].internalFormat = baseImage->_BaseFormat;
 148          }
 149
 150          total_height += MAX2(2, virtual_height);
 151          virtual_height >>= 1;
 152       }
 153
 154       t->intel.depth_pitch = total_height * pitch;
 155
 156       /* Multiply slice size by texture depth for total size.  It's
 157        * remarkable how wasteful of memory all the i8x0 texture
 158        * layouts are.
 159        */
 160       total_height *= t->intel.image[0][0].image->Depth;
 161       break;
 162    }
 163    default:
 164       pitch = tObj->Image[0][firstLevel]->Width * t->intel.texelBytes;
 165       pitch = (pitch + 3) & ~3;
 166       t->intel.base.dirty_images[0] = ~0;
 167
 168       for ( total_height = i = 0 ; i < numLevels ; i++ ) {
 169          t->intel.image[0][i].image = tObj->Image[0][firstLevel + i];
 170          if (!t->intel.image[0][i].image)
 171             break;
 172
 173          t->intel.image[0][i].offset = total_height * pitch;
 174          t->intel.image[0][i].internalFormat = baseImage->_BaseFormat;
 175          if (t->intel.image[0][i].image->IsCompressed)
 176          {
 177            if (t->intel.image[0][i].image->Height > 4)
 178              total_height += t->intel.image[0][i].image->Height/4;
 179            else
 180              total_height += 1;
 181          }
 182          else
 183            total_height += MAX2(2, t->intel.image[0][i].image->Height);
 184       }
 185       break;
 186    }
 187
 188    t->intel.Pitch = pitch;
 189    t->intel.base.totalSize = total_height*pitch;
 190    t->intel.max_level = numLevels-1;
 191 }
 192
 193
 194 static void i945LayoutTextureImages( i915ContextPtr i915,
 195                                     struct gl_texture_object *tObj )
 196 {
 197    const struct gl_texture_image *baseImage = tObj->Image[0][tObj->BaseLevel];
 198    i915TextureObjectPtr t = (i915TextureObjectPtr) tObj->DriverData;
 199    GLint firstLevel, lastLevel, numLevels;
 200    GLint i, total_height, pitch, sz, max_offset = 0, offset;
 201
 202
 203    /* Compute which mipmap levels we really want to send to the hardware.
 204     */
 205    driCalculateTextureFirstLastLevel( (driTextureObject *) t );
 206
 207    /* Figure out the amount of memory required to hold all the mipmap
 208     * levels.  Choose the smallest pitch to accomodate the largest
 209     * mipmap:
 210     */
 211    firstLevel = t->intel.base.firstLevel;
 212    lastLevel = t->intel.base.lastLevel;
 213    numLevels = lastLevel - firstLevel + 1;
 214
 215
 216
 217    /* All images must be loaded at this pitch.  Count the number of
 218     * lines required:
 219     */
 220    switch (tObj->Target) {
 221    case GL_TEXTURE_CUBE_MAP: {
 222       const GLuint dim = tObj->Image[0][firstLevel]->Width;
 223       GLuint face;
 224
 225       /* Depending on the size of the largest images, pitch can be
 226        * determined either by the old-style packing of cubemap faces,
 227        * or the final row of 4x4, 2x2 and 1x1 faces below this.
 228        */
 229       if (dim > 32) {
 230          pitch = dim * t->intel.texelBytes;
 231          pitch *= 2;            /* double pitch for cube layouts */
 232          pitch = (pitch + 3) & ~3;
 233       }
 234       else {
 235          pitch = 14 * 8 * t->intel.texelBytes; /* determined by row of
 236                                                 * little maps at
 237                                                 * bottom */
 238       }
 239
 240       total_height = dim * 4 + 4;
 241
 242       for ( face = 0 ; face < 6 ; face++) {
 243          GLuint x = initial_offsets[face][0] * dim;
 244          GLuint y = initial_offsets[face][1] * dim;
 245          GLuint d = dim;
 246
 247          if (dim == 4 && face >= 4) {
 248             y = total_height - 4;
 249             x = (face - 4) * 8;
 250          }
 251          else if (dim < 4) {
 252             y = total_height - 4;
 253             x = face * 8;
 254          }
 255
 256          t->intel.base.dirty_images[face] = ~0;
 257
 258          assert(tObj->Image[face][firstLevel]->Width == dim);
 259          assert(tObj->Image[face][firstLevel]->Height == dim);
 260
 261          for (i = 0; i < numLevels; i++) {
 262
 263
 264             t->intel.image[face][i].image = tObj->Image[face][firstLevel + i];
 265             assert(t->intel.image[face][i].image);
 266
 267             t->intel.image[face][i].offset =
 268                y * pitch + x * t->intel.texelBytes;
 269             t->intel.image[face][i].internalFormat = baseImage->_BaseFormat;
 270
 271             d >>= 1;
 272
 273             switch (d) {
 274             case 4:
 275                switch (face) {
 276                case FACE_POS_X:
 277                case FACE_NEG_X:
 278                   x += step_offsets[face][0] * d;
 279                   y += step_offsets[face][1] * d;
 280                   break;
 281                case FACE_POS_Y:
 282                case FACE_NEG_Y:
 283                   y += 12;
 284                   x -= 8;
 285                   break;
 286                case FACE_POS_Z:
 287                case FACE_NEG_Z:
 288                   y = total_height - 4;
 289                   x = (face - 4) * 8;
 290                   break;
 291                }
 292
 293             case 2:
 294                y = total_height - 4;
 295                x = 16 + face * 8;
 296                break;
 297
 298             case 1:
 299                x += 48;
 300                break;
 301
 302             default:
 303                x += step_offsets[face][0] * d;
 304                y += step_offsets[face][1] * d;
 305                break;
 306             }
 307          }
 308       }
 309       max_offset = total_height * pitch;
 310       break;
 311    }
 312    case GL_TEXTURE_3D: {
 313       GLuint depth_packing = 0, depth_pack_pitch;
 314       GLuint tmp_numLevels = numLevels;
 315       pitch = tObj->Image[0][firstLevel]->Width * t->intel.texelBytes;
 316       pitch = (pitch + 3) & ~3;
 317       depth_pack_pitch = pitch;
 318
 319       t->intel.base.dirty_images[0] = ~0;
 320
 321
 322       for ( total_height = i = 0 ; i < tmp_numLevels ; i++ ) {
 323          t->intel.image[0][i].image = tObj->Image[0][firstLevel + i];
 324          if (!t->intel.image[0][i].image)
 325             break;
 326
 327
 328          t->intel.image[0][i].offset = total_height * pitch;
 329          t->intel.image[0][i].internalFormat = baseImage->_BaseFormat;
 330
 331
 332
 333          total_height += MAX2(2, t->intel.image[0][i].image->Height) *
 334             MAX2((t->intel.image[0][i].image->Depth >> depth_packing), 1);
 335
 336          /* When alignment dominates, can't increase depth packing?
 337           * Or does pitch grow???  What are the alignment constraints,
 338           * anyway?
 339           */
 340          if (depth_pack_pitch > 4) {
 341             depth_packing++;
 342             depth_pack_pitch <<= 2;
 343          }
 344       }
 345
 346       max_offset = total_height * pitch;
 347       break;
 348    }
 349    default:
 350       pitch = tObj->Image[0][firstLevel]->Width * t->intel.texelBytes;
 351       pitch = (pitch + 3) & ~3;
 352       t->intel.base.dirty_images[0] = ~0;
 353       max_offset = 0;
 354
 355       for ( offset = i = 0 ; i < numLevels ; i++ ) {
 356          t->intel.image[0][i].image = tObj->Image[0][firstLevel + i];
 357          if (!t->intel.image[0][i].image)
 358             break;
 359
 360          t->intel.image[0][i].offset = offset;
 361          t->intel.image[0][i].internalFormat = baseImage->_BaseFormat;
 362
 363          if (t->intel.image[0][i].image->IsCompressed)
 364             sz = MAX2(1, t->intel.image[0][i].image->Height/4) * pitch;
 365          else
 366             sz = MAX2(2, t->intel.image[0][i].image->Height) * pitch;
 367
 368          /* Because the images are packed better, the final offset
 369           * might not be the maximal one:
 370           */
 371          max_offset = MAX2(max_offset, offset + sz);
 372
 373          /* LPT change: step right after second mipmap.
 374           */
 375          if (i == 1)
 376             offset += pitch / 2;
 377          else
 378             offset += sz;
 379
 380       }
 381       break;
 382    }
 383
 384    t->intel.Pitch = pitch;
 385    t->intel.base.totalSize = max_offset;
 386    t->intel.max_level = numLevels-1;
 387 }
 388
 389
 390
 391
 392 static void i915SetTexImages( i915ContextPtr i915,
 393                              struct gl_texture_object *tObj )
 394 {
 395    GLuint textureFormat;
 396    i915TextureObjectPtr t = (i915TextureObjectPtr) tObj->DriverData;
 397    const struct gl_texture_image *baseImage = tObj->Image[0][tObj->BaseLevel];
 398    GLint ss2 = 0;
 399
 400    switch( baseImage->TexFormat->MesaFormat ) {
 401    case MESA_FORMAT_L8:
 402       t->intel.texelBytes = 1;
 403       textureFormat = MAPSURF_8BIT | MT_8BIT_L8;
 404       break;
 405
 406    case MESA_FORMAT_I8:
 407       t->intel.texelBytes = 1;
 408       textureFormat = MAPSURF_8BIT | MT_8BIT_I8;
 409       break;
 410
 411    case MESA_FORMAT_A8:
 412       t->intel.texelBytes = 1;
 413       textureFormat = MAPSURF_8BIT | MT_8BIT_A8;
 414       break;
 415
 416    case MESA_FORMAT_AL88:
 417       t->intel.texelBytes = 2;
 418       textureFormat = MAPSURF_16BIT | MT_16BIT_AY88;
 419       break;
 420
 421    case MESA_FORMAT_RGB565:
 422       t->intel.texelBytes = 2;
 423       textureFormat = MAPSURF_16BIT | MT_16BIT_RGB565;
 424       break;
 425
 426    case MESA_FORMAT_ARGB1555:
 427       t->intel.texelBytes = 2;
 428       textureFormat = MAPSURF_16BIT | MT_16BIT_ARGB1555;
 429       break;
 430
 431    case MESA_FORMAT_ARGB4444:
 432       t->intel.texelBytes = 2;
 433       textureFormat = MAPSURF_16BIT | MT_16BIT_ARGB4444;
 434       break;
 435
 436    case MESA_FORMAT_ARGB8888:
 437       t->intel.texelBytes = 4;
 438       textureFormat = MAPSURF_32BIT | MT_32BIT_ARGB8888;
 439       break;
 440
 441    case MESA_FORMAT_YCBCR_REV:
 442       t->intel.texelBytes = 2;
 443       textureFormat = (MAPSURF_422 | MT_422_YCRCB_NORMAL);
 444       ss2 |= SS2_COLORSPACE_CONVERSION;
 445       break;
 446
 447    case MESA_FORMAT_YCBCR:
 448       t->intel.texelBytes = 2;
 449       textureFormat = (MAPSURF_422 | MT_422_YCRCB_SWAPY);
 450       ss2 |= SS2_COLORSPACE_CONVERSION;
 451       break;
 452
 453    case MESA_FORMAT_RGB_FXT1:
 454    case MESA_FORMAT_RGBA_FXT1:
 455      t->intel.texelBytes = 2;
 456      textureFormat = (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
 457      break;
 458
 459    case MESA_FORMAT_DEPTH_COMPONENT16:
 460       t->intel.texelBytes = 2;
 461       textureFormat = (MAPSURF_16BIT | MT_16BIT_L16);
 462       break;
 463
 464    case MESA_FORMAT_RGBA_DXT1:
 465    case MESA_FORMAT_RGB_DXT1:
 466      /*
 467       * DXTn pitches are Width/4 * blocksize in bytes
 468       * for DXT1: blocksize=8 so Width/4*8 = Width * 2
 469       * for DXT3/5: blocksize=16 so Width/4*16 = Width * 4
 470       */
 471      t->intel.texelBytes = 2;
 472      textureFormat = (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
 473      break;
 474
 475    case MESA_FORMAT_RGBA_DXT3:
 476      t->intel.texelBytes = 4;
 477      textureFormat = (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
 478      break;
 479
 480    case MESA_FORMAT_RGBA_DXT5:
 481      t->intel.texelBytes = 4;
 482      textureFormat = (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
 483      break;
 484
 485 #if 0
 486    case MESA_FORMAT_DEPTH_COMPONENT_X8Z24:
 487       t->intel.texelBytes = 4;
 488       textureFormat = (MAPSURF_32BIT | MT_32BIT_xL824);
 489       break;
 490 #endif
 491
 492    default:
 493       fprintf(stderr, "%s: bad image format %x\n", __FUNCTION__,
 494               baseImage->TexFormat->MesaFormat);
 495       abort();
 496    }
 497
 498
 499    if (i915->intel.intelScreen->deviceID == PCI_CHIP_I945_G)
 500       i945LayoutTextureImages( i915, tObj );
 501    else
 502       i915LayoutTextureImages( i915, tObj );
 503
 504    t->Setup[I915_TEXREG_MS3] =
 505       (((tObj->Image[0][t->intel.base.firstLevel]->Height - 1) << MS3_HEIGHT_SHIFT) |
 506        ((tObj->Image[0][t->intel.base.firstLevel]->Width - 1) << MS3_WIDTH_SHIFT) |
 507        textureFormat |
 508        MS3_USE_FENCE_REGS);
 509
 510    t->Setup[I915_TEXREG_MS4] =
 511       ((((t->intel.Pitch / 4) - 1) << MS4_PITCH_SHIFT) |
 512        MS4_CUBE_FACE_ENA_MASK |
 513        (((t->intel.max_level * 4)) << MS4_MAX_LOD_SHIFT) |
 514        ((tObj->Image[0][t->intel.base.firstLevel]->Depth - 1) << MS4_VOLUME_DEPTH_SHIFT));
 515
 516    t->Setup[I915_TEXREG_SS2] &= ~(SS2_COLORSPACE_CONVERSION);
 517    t->Setup[I915_TEXREG_SS2] |= ss2;
 518
 519    t->intel.dirty = I915_UPLOAD_TEX_ALL;
 520
 521 }
 522
 523
 524 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
 525  * Intel drivers for "other operating systems" implement GL_CLAMP as
 526  * GL_CLAMP_TO_EDGE, so the same is done here.
 527  */
 528 static GLuint translate_wrap_mode( GLenum wrap )
 529 {
 530    switch( wrap ) {
 531    case GL_REPEAT: return TEXCOORDMODE_WRAP;
 532    case GL_CLAMP:  return TEXCOORDMODE_CLAMP_EDGE; /* not quite correct */
 533    case GL_CLAMP_TO_EDGE: return TEXCOORDMODE_CLAMP_EDGE;
 534    case GL_CLAMP_TO_BORDER: return TEXCOORDMODE_CLAMP_BORDER;
 535    case GL_MIRRORED_REPEAT: return TEXCOORDMODE_MIRROR;
 536    default: return TEXCOORDMODE_WRAP;
 537    }
 538 }
 539
 540
 541 /**
 542  */
 543 static void i915ImportTexObjState( struct gl_texture_object *texObj )
 544 {
 545    i915TextureObjectPtr t = (i915TextureObjectPtr)texObj->DriverData;
 546    int minFilt = 0, mipFilt = 0, magFilt = 0, shadow = 0;
 547
 548    if(INTEL_DEBUG&DEBUG_DRI)
 549       fprintf(stderr, "%s\n", __FUNCTION__);
 550
 551    switch (texObj->MinFilter) {
 552    case GL_NEAREST:
 553       minFilt = FILTER_NEAREST;
 554       mipFilt = MIPFILTER_NONE;
 555       break;
 556    case GL_LINEAR:
 557       minFilt = FILTER_LINEAR;
 558       mipFilt = MIPFILTER_NONE;
 559       break;
 560    case GL_NEAREST_MIPMAP_NEAREST:
 561       minFilt = FILTER_NEAREST;
 562       mipFilt = MIPFILTER_NEAREST;
 563       break;
 564    case GL_LINEAR_MIPMAP_NEAREST:
 565       minFilt = FILTER_LINEAR;
 566       mipFilt = MIPFILTER_NEAREST;
 567       break;
 568    case GL_NEAREST_MIPMAP_LINEAR:
 569       minFilt = FILTER_NEAREST;
 570       mipFilt = MIPFILTER_LINEAR;
 571       break;
 572    case GL_LINEAR_MIPMAP_LINEAR:
 573       minFilt = FILTER_LINEAR;
 574       mipFilt = MIPFILTER_LINEAR;
 575       break;
 576    default:
 577       break;
 578    }
 579
 580    if ( texObj->MaxAnisotropy > 1.0 ) {
 581       minFilt = FILTER_ANISOTROPIC;
 582       magFilt = FILTER_ANISOTROPIC;
 583    }
 584    else {
 585       switch (texObj->MagFilter) {
 586       case GL_NEAREST:
 587          magFilt = FILTER_NEAREST;
 588          break;
 589       case GL_LINEAR:
 590          magFilt = FILTER_LINEAR;
 591          break;
 592       default:
 593          break;
 594       }
 595    }
 596
 597    if (texObj->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB &&
 598        texObj->Target != GL_TEXTURE_3D) {
 599
 600       shadow = SS2_SHADOW_ENABLE;
 601       shadow |= intel_translate_compare_func( texObj->CompareFunc );
 602
 603       minFilt = FILTER_4X4_FLAT;
 604       magFilt = FILTER_4X4_FLAT;
 605    }
 606
 607
 608    t->Setup[I915_TEXREG_SS2] &= ~(SS2_MIN_FILTER_MASK |
 609                                  SS2_MIP_FILTER_MASK |
 610                                  SS2_MAG_FILTER_MASK |
 611                                  SS2_SHADOW_ENABLE |
 612                                  SS2_SHADOW_FUNC_MASK);
 613    t->Setup[I915_TEXREG_SS2] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
 614                                 (mipFilt << SS2_MIP_FILTER_SHIFT) |
 615                                 (magFilt << SS2_MAG_FILTER_SHIFT) |
 616                                 shadow);
 617
 618    {
 619       GLuint ss3 = t->Setup[I915_TEXREG_SS3] & ~(SS3_TCX_ADDR_MODE_MASK |
 620                                                 SS3_TCY_ADDR_MODE_MASK |
 621                                                 SS3_TCZ_ADDR_MODE_MASK);
 622       GLenum ws = texObj->WrapS;
 623       GLenum wt = texObj->WrapT;
 624       GLenum wr = texObj->WrapR;
 625
 626       t->refs_border_color = 0;
 627
 628       if (texObj->Target == GL_TEXTURE_3D &&
 629           (texObj->MinFilter != GL_NEAREST ||
 630            texObj->MagFilter != GL_NEAREST)) {
 631
 632          /* Try to mimic GL_CLAMP functionality a little better -
 633           * switch to CLAMP_TO_BORDER whenever a non-NEAREST filter is
 634           * in use.  Only do this for 3D textures at the moment --
 635           * doing it universally would fix the conform texbc.c
 636           * failure, though.
 637           */
 638          if (ws == GL_CLAMP) ws = GL_CLAMP_TO_BORDER;
 639          if (wt == GL_CLAMP) wt = GL_CLAMP_TO_BORDER;
 640          if (wr == GL_CLAMP) wr = GL_CLAMP_TO_BORDER;
 641
 642          /* 3D textures don't seem to respect the border color.
 643           * Fallback if there's ever a danger that they might refer to
 644           * it.
 645           */
 646          if (ws == GL_CLAMP_TO_BORDER) t->refs_border_color = 1;
 647          if (wt == GL_CLAMP_TO_BORDER) t->refs_border_color = 1;
 648          if (wr == GL_CLAMP_TO_BORDER) t->refs_border_color = 1;
 649       }
 650
 651       ss3 |= translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT;
 652       ss3 |= translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT;
 653       ss3 |= translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT;
 654
 655       if (ss3 != t->Setup[I915_TEXREG_SS3]) {
 656          t->intel.dirty = I915_UPLOAD_TEX_ALL;
 657          t->Setup[I915_TEXREG_SS3] = ss3;
 658       }
 659    }
 660
 661    {
 662       const GLubyte *color = texObj->_BorderChan;
 663
 664       t->Setup[I915_TEXREG_SS4] = INTEL_PACKCOLOR8888(color[0],color[1],
 665                                                      color[2],color[3]);
 666    }
 667 }
 668
 669
 670
 671 static void i915_import_tex_unit( i915ContextPtr i915,
 672                                  i915TextureObjectPtr t,
 673                                  GLuint unit )
 674 {
 675    GLuint state[I915_TEX_SETUP_SIZE];
 676
 677    if(INTEL_DEBUG&DEBUG_TEXTURE)
 678       fprintf(stderr, "%s unit(%d)\n", __FUNCTION__, unit);
 679
 680    if (i915->intel.CurrentTexObj[unit])
 681       i915->intel.CurrentTexObj[unit]->base.bound &= ~(1U << unit);
 682
 683    i915->intel.CurrentTexObj[unit] = (intelTextureObjectPtr)t;
 684    t->intel.base.bound |= (1 << unit);
 685
 686    if (t->intel.dirty & I915_UPLOAD_TEX(unit)) {
 687       i915ImportTexObjState( t->intel.base.tObj );
 688       t->intel.dirty &= ~I915_UPLOAD_TEX(unit);
 689    }
 690
 691    state[I915_TEXREG_MS2] = t->intel.TextureOffset;
 692    state[I915_TEXREG_MS3] = t->Setup[I915_TEXREG_MS3];
 693    state[I915_TEXREG_MS4] = t->Setup[I915_TEXREG_MS4];
 694
 695    state[I915_TEXREG_SS2] = (i915->state.Tex[unit][I915_TEXREG_SS2] &
 696                             SS2_LOD_BIAS_MASK);
 697    state[I915_TEXREG_SS2] |= (t->Setup[I915_TEXREG_SS2] & ~SS2_LOD_BIAS_MASK);
 698
 699    state[I915_TEXREG_SS3] = (i915->state.Tex[unit][I915_TEXREG_SS3] &
 700                             SS3_NORMALIZED_COORDS);
 701    state[I915_TEXREG_SS3] |= (t->Setup[I915_TEXREG_SS3] &
 702                              ~(SS3_NORMALIZED_COORDS|
 703                                SS3_TEXTUREMAP_INDEX_MASK));
 704
 705    state[I915_TEXREG_SS3] |= (unit<<SS3_TEXTUREMAP_INDEX_SHIFT);
 706
 707    state[I915_TEXREG_SS4] = t->Setup[I915_TEXREG_SS4];
 708
 709
 710    if (memcmp(state, i915->state.Tex[unit], sizeof(state)) != 0) {
 711       I915_STATECHANGE( i915, I915_UPLOAD_TEX(unit) );
 712       memcpy(i915->state.Tex[unit], state, sizeof(state));
 713    }
 714 }
 715
 716
 717
 718 static GLboolean enable_tex_common( GLcontext *ctx, GLuint unit )
 719 {
 720    i915ContextPtr i915 = I915_CONTEXT(ctx);
 721    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 722    struct gl_texture_object *tObj = texUnit->_Current;
 723    i915TextureObjectPtr t = (i915TextureObjectPtr)tObj->DriverData;
 724
 725    if (0) fprintf(stderr, "%s %d\n", __FUNCTION__, unit);
 726
 727    if (!(i915->state.active & I915_UPLOAD_TEX(unit))) {
 728       I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_TRUE);
 729    }
 730
 731    /* Fallback if there's a texture border */
 732    if ( tObj->Image[0][tObj->BaseLevel]->Border > 0 ) {
 733       return GL_FALSE;
 734    }
 735
 736
 737    /* Update state if this is a different texture object to last
 738     * time.
 739     */
 740    if (i915->intel.CurrentTexObj[unit] != &t->intel ||
 741        (t->intel.dirty & I915_UPLOAD_TEX(unit))) {
 742       i915_import_tex_unit( i915, t, unit);
 743       i915->tex_program.translated = 0;
 744    }
 745
 746    return GL_TRUE;
 747 }
 748
 749 static GLboolean enable_tex_rect( GLcontext *ctx, GLuint unit )
 750 {
 751    i915ContextPtr i915 = I915_CONTEXT(ctx);
 752    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 753    struct gl_texture_object *tObj = texUnit->_Current;
 754    i915TextureObjectPtr t = (i915TextureObjectPtr)tObj->DriverData;
 755    GLuint ss3 = i915->state.Tex[unit][I915_TEXREG_SS3];
 756
 757    ss3 &= ~SS3_NORMALIZED_COORDS;
 758
 759    if (ss3 != i915->state.Tex[unit][I915_TEXREG_SS3]) {
 760       I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 761       i915->state.Tex[unit][I915_TEXREG_SS3] = ss3;
 762    }
 763
 764    /* Upload teximages (not pipelined)
 765     */
 766    if (t->intel.base.dirty_images[0]) {
 767       i915SetTexImages( i915, tObj );
 768       if (!intelUploadTexImages( &i915->intel, &t->intel, 0 )) {
 769          return GL_FALSE;
 770       }
 771    }
 772
 773    return GL_TRUE;
 774 }
 775
 776
 777 static GLboolean enable_tex_2d( GLcontext *ctx, GLuint unit )
 778 {
 779    i915ContextPtr i915 = I915_CONTEXT(ctx);
 780    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 781    struct gl_texture_object *tObj = texUnit->_Current;
 782    i915TextureObjectPtr t = (i915TextureObjectPtr)tObj->DriverData;
 783    GLuint ss3 = i915->state.Tex[unit][I915_TEXREG_SS3];
 784
 785    ss3 |= SS3_NORMALIZED_COORDS;
 786
 787    if (ss3 != i915->state.Tex[unit][I915_TEXREG_SS3]) {
 788       I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 789       i915->state.Tex[unit][I915_TEXREG_SS3] = ss3;
 790    }
 791
 792    /* Upload teximages (not pipelined)
 793     */
 794    if (t->intel.base.dirty_images[0]) {
 795       i915SetTexImages( i915, tObj );
 796       if (!intelUploadTexImages( &i915->intel, &t->intel, 0 )) {
 797          return GL_FALSE;
 798       }
 799    }
 800
 801    return GL_TRUE;
 802 }
 803
 804 static GLboolean enable_tex_cube( GLcontext *ctx, GLuint unit )
 805 {
 806    i915ContextPtr i915 = I915_CONTEXT(ctx);
 807    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 808    struct gl_texture_object *tObj = texUnit->_Current;
 809    i915TextureObjectPtr t = (i915TextureObjectPtr)tObj->DriverData;
 810    GLuint ss3 = i915->state.Tex[unit][I915_TEXREG_SS3];
 811    GLuint face;
 812
 813    ss3 |= SS3_NORMALIZED_COORDS;
 814
 815    if (ss3 != i915->state.Tex[unit][I915_TEXREG_SS3]) {
 816       I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 817       i915->state.Tex[unit][I915_TEXREG_SS3] = ss3;
 818    }
 819
 820    /* Upload teximages (not pipelined)
 821     */
 822    if ( t->intel.base.dirty_images[0] || t->intel.base.dirty_images[1] ||
 823         t->intel.base.dirty_images[2] || t->intel.base.dirty_images[3] ||
 824         t->intel.base.dirty_images[4] || t->intel.base.dirty_images[5] ) {
 825       i915SetTexImages( i915, tObj );
 826    }
 827
 828    /* upload (per face) */
 829    for (face = 0; face < 6; face++) {
 830       if (t->intel.base.dirty_images[face]) {
 831          if (!intelUploadTexImages( &i915->intel, &t->intel, face )) {
 832             return GL_FALSE;
 833          }
 834       }
 835    }
 836
 837
 838    return GL_TRUE;
 839 }
 840
 841 static GLboolean enable_tex_3d( GLcontext *ctx, GLuint unit )
 842 {
 843    struct gl_texture_object *tObj = ctx->Texture.Unit[unit]._Current;
 844    i915TextureObjectPtr t = (i915TextureObjectPtr)tObj->DriverData;
 845
 846    /* 3D textures on I915 seem to get bogus border colors, hence this
 847     * fallback:
 848     */
 849    if (t->refs_border_color)
 850       return GL_FALSE;
 851
 852    return GL_TRUE;
 853 }
 854
 855
 856
 857
 858 static GLboolean disable_tex( GLcontext *ctx, GLuint unit )
 859 {
 860    i915ContextPtr i915 = I915_CONTEXT(ctx);
 861
 862    if (i915->state.active & I915_UPLOAD_TEX(unit)) {
 863       I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_FALSE);
 864    }
 865
 866    /* The old texture is no longer bound to this texture unit.
 867     * Mark it as such.
 868     */
 869    if ( i915->intel.CurrentTexObj[unit] != NULL ) {
 870       i915->intel.CurrentTexObj[unit]->base.bound &= ~(1U << 0);
 871       i915->intel.CurrentTexObj[unit] = NULL;
 872    }
 873
 874    return GL_TRUE;
 875 }
 876
 877 static GLboolean i915UpdateTexUnit( GLcontext *ctx, GLuint unit )
 878 {
 879    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 880
 881    if (texUnit->_ReallyEnabled &&
 882        INTEL_CONTEXT(ctx)->intelScreen->tex.size < 2048 * 1024)
 883       return GL_FALSE;
 884
 885    switch (texUnit->_ReallyEnabled) {
 886    case TEXTURE_1D_BIT:
 887    case TEXTURE_2D_BIT:
 888       return (enable_tex_2d( ctx, unit ) &&
 889               enable_tex_common( ctx, unit ));
 890    case TEXTURE_RECT_BIT:
 891       return (enable_tex_rect( ctx, unit ) &&
 892               enable_tex_common( ctx, unit ));
 893    case TEXTURE_CUBE_BIT:
 894       return (enable_tex_cube( ctx, unit ) &&
 895               enable_tex_common( ctx, unit ));
 896    case TEXTURE_3D_BIT:
 897        return (enable_tex_2d( ctx, unit ) &&
 898                enable_tex_common( ctx, unit ) &&
 899                enable_tex_3d( ctx, unit));
 900    case 0:
 901       return disable_tex( ctx, unit );
 902    default:
 903       return GL_FALSE;
 904    }
 905 }
 906
 907
 908 void i915UpdateTextureState( intelContextPtr intel )
 909 {
 910    GLcontext *ctx = &intel->ctx;
 911    GLboolean ok = GL_TRUE;
 912    GLuint i;
 913
 914    for (i = 0 ; i < I915_TEX_UNITS && ok ; i++) {
 915       ok = i915UpdateTexUnit( ctx, i );
 916    }
 917
 918    FALLBACK( intel, I915_FALLBACK_TEXTURE, !ok );
 919 }
 920
 921
 922