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             total_height += (t->intel.image[0][i].image->Height + 3) / 4;
 177          }
 178          else
 179            total_height += MAX2(2, t->intel.image[0][i].image->Height);
 180       }
 181       break;
 182    }
 183
 184    t->intel.Pitch = pitch;
 185    t->intel.base.totalSize = total_height*pitch;
 186    t->intel.max_level = numLevels-1;
 187 }
 188
 189
 190 static void i945LayoutTextureImages( i915ContextPtr i915,
 191                                     struct gl_texture_object *tObj )
 192 {
 193    const struct gl_texture_image *baseImage = tObj->Image[0][tObj->BaseLevel];
 194    i915TextureObjectPtr t = (i915TextureObjectPtr) tObj->DriverData;
 195    GLint firstLevel, lastLevel, numLevels;
 196    GLint i, total_height, pitch, sz, max_offset = 0, offset;
 197
 198
 199    /* Compute which mipmap levels we really want to send to the hardware.
 200     */
 201    driCalculateTextureFirstLastLevel( (driTextureObject *) t );
 202
 203    /* Figure out the amount of memory required to hold all the mipmap
 204     * levels.  Choose the smallest pitch to accomodate the largest
 205     * mipmap:
 206     */
 207    firstLevel = t->intel.base.firstLevel;
 208    lastLevel = t->intel.base.lastLevel;
 209    numLevels = lastLevel - firstLevel + 1;
 210
 211
 212
 213    /* All images must be loaded at this pitch.  Count the number of
 214     * lines required:
 215     */
 216    switch (tObj->Target) {
 217    case GL_TEXTURE_CUBE_MAP: {
 218       const GLuint dim = tObj->Image[0][firstLevel]->Width;
 219       GLuint face;
 220
 221       /* Depending on the size of the largest images, pitch can be
 222        * determined either by the old-style packing of cubemap faces,
 223        * or the final row of 4x4, 2x2 and 1x1 faces below this.
 224        */
 225       if (dim > 32) {
 226          pitch = dim * t->intel.texelBytes;
 227          pitch *= 2;            /* double pitch for cube layouts */
 228          pitch = (pitch + 3) & ~3;
 229       }
 230       else {
 231          pitch = 14 * 8 * t->intel.texelBytes; /* determined by row of
 232                                                 * little maps at
 233                                                 * bottom */
 234       }
 235
 236       total_height = dim * 4 + 4;
 237
 238       for ( face = 0 ; face < 6 ; face++) {
 239          GLuint x = initial_offsets[face][0] * dim;
 240          GLuint y = initial_offsets[face][1] * dim;
 241          GLuint d = dim;
 242
 243          if (dim == 4 && face >= 4) {
 244             y = total_height - 4;
 245             x = (face - 4) * 8;
 246          }
 247          else if (dim < 4) {
 248             y = total_height - 4;
 249             x = face * 8;
 250          }
 251
 252          t->intel.base.dirty_images[face] = ~0;
 253
 254          assert(tObj->Image[face][firstLevel]->Width == dim);
 255          assert(tObj->Image[face][firstLevel]->Height == dim);
 256
 257          for (i = 0; i < numLevels; i++) {
 258
 259
 260             t->intel.image[face][i].image = tObj->Image[face][firstLevel + i];
 261             assert(t->intel.image[face][i].image);
 262
 263             t->intel.image[face][i].offset =
 264                y * pitch + x * t->intel.texelBytes;
 265             t->intel.image[face][i].internalFormat = baseImage->_BaseFormat;
 266
 267             d >>= 1;
 268
 269             switch (d) {
 270             case 4:
 271                switch (face) {
 272                case FACE_POS_X:
 273                case FACE_NEG_X:
 274                   x += step_offsets[face][0] * d;
 275                   y += step_offsets[face][1] * d;
 276                   break;
 277                case FACE_POS_Y:
 278                case FACE_NEG_Y:
 279                   y += 12;
 280                   x -= 8;
 281                   break;
 282                case FACE_POS_Z:
 283                case FACE_NEG_Z:
 284                   y = total_height - 4;
 285                   x = (face - 4) * 8;
 286                   break;
 287                }
 288
 289             case 2:
 290                y = total_height - 4;
 291                x = 16 + face * 8;
 292                break;
 293
 294             case 1:
 295                x += 48;
 296                break;
 297
 298             default:
 299                x += step_offsets[face][0] * d;
 300                y += step_offsets[face][1] * d;
 301                break;
 302             }
 303          }
 304       }
 305       max_offset = total_height * pitch;
 306       break;
 307    }
 308    case GL_TEXTURE_3D: {
 309       GLuint depth_packing = 0, depth_pack_pitch;
 310       GLuint tmp_numLevels = numLevels;
 311       pitch = tObj->Image[0][firstLevel]->Width * t->intel.texelBytes;
 312       pitch = (pitch + 3) & ~3;
 313       depth_pack_pitch = pitch;
 314
 315       t->intel.base.dirty_images[0] = ~0;
 316
 317
 318       for ( total_height = i = 0 ; i < tmp_numLevels ; i++ ) {
 319          t->intel.image[0][i].image = tObj->Image[0][firstLevel + i];
 320          if (!t->intel.image[0][i].image)
 321             break;
 322
 323
 324          t->intel.image[0][i].offset = total_height * pitch;
 325          t->intel.image[0][i].internalFormat = baseImage->_BaseFormat;
 326
 327
 328
 329          total_height += MAX2(2, t->intel.image[0][i].image->Height) *
 330             MAX2((t->intel.image[0][i].image->Depth >> depth_packing), 1);
 331
 332          /* When alignment dominates, can't increase depth packing?
 333           * Or does pitch grow???  What are the alignment constraints,
 334           * anyway?
 335           */
 336          if (depth_pack_pitch > 4) {
 337             depth_packing++;
 338             depth_pack_pitch <<= 2;
 339          }
 340       }
 341
 342       max_offset = total_height * pitch;
 343       break;
 344    }
 345    default:
 346       pitch = tObj->Image[0][firstLevel]->Width * t->intel.texelBytes;
 347       pitch = (pitch + 3) & ~3;
 348       t->intel.base.dirty_images[0] = ~0;
 349       max_offset = 0;
 350
 351       for ( offset = i = 0 ; i < numLevels ; i++ ) {
 352          t->intel.image[0][i].image = tObj->Image[0][firstLevel + i];
 353          if (!t->intel.image[0][i].image)
 354             break;
 355
 356          t->intel.image[0][i].offset = offset;
 357          t->intel.image[0][i].internalFormat = baseImage->_BaseFormat;
 358
 359          if (t->intel.image[0][i].image->IsCompressed)
 360             sz = MAX2(1, t->intel.image[0][i].image->Height/4) * pitch;
 361          else
 362             sz = MAX2(2, t->intel.image[0][i].image->Height) * pitch;
 363
 364          /* Because the images are packed better, the final offset
 365           * might not be the maximal one:
 366           */
 367          max_offset = MAX2(max_offset, offset + sz);
 368
 369          /* LPT change: step right after second mipmap.
 370           */
 371          if (i == 1)
 372             offset += pitch / 2;
 373          else
 374             offset += sz;
 375
 376       }
 377       break;
 378    }
 379
 380    t->intel.Pitch = pitch;
 381    t->intel.base.totalSize = max_offset;
 382    t->intel.max_level = numLevels-1;
 383 }
 384
 385
 386
 387
 388 static void i915SetTexImages( i915ContextPtr i915,
 389                              struct gl_texture_object *tObj )
 390 {
 391    GLuint textureFormat;
 392    i915TextureObjectPtr t = (i915TextureObjectPtr) tObj->DriverData;
 393    const struct gl_texture_image *baseImage = tObj->Image[0][tObj->BaseLevel];
 394    GLint ss2 = 0;
 395
 396    switch( baseImage->TexFormat->MesaFormat ) {
 397    case MESA_FORMAT_L8:
 398       t->intel.texelBytes = 1;
 399       textureFormat = MAPSURF_8BIT | MT_8BIT_L8;
 400       break;
 401
 402    case MESA_FORMAT_I8:
 403       t->intel.texelBytes = 1;
 404       textureFormat = MAPSURF_8BIT | MT_8BIT_I8;
 405       break;
 406
 407    case MESA_FORMAT_A8:
 408       t->intel.texelBytes = 1;
 409       textureFormat = MAPSURF_8BIT | MT_8BIT_A8;
 410       break;
 411
 412    case MESA_FORMAT_AL88:
 413       t->intel.texelBytes = 2;
 414       textureFormat = MAPSURF_16BIT | MT_16BIT_AY88;
 415       break;
 416
 417    case MESA_FORMAT_RGB565:
 418       t->intel.texelBytes = 2;
 419       textureFormat = MAPSURF_16BIT | MT_16BIT_RGB565;
 420       break;
 421
 422    case MESA_FORMAT_ARGB1555:
 423       t->intel.texelBytes = 2;
 424       textureFormat = MAPSURF_16BIT | MT_16BIT_ARGB1555;
 425       break;
 426
 427    case MESA_FORMAT_ARGB4444:
 428       t->intel.texelBytes = 2;
 429       textureFormat = MAPSURF_16BIT | MT_16BIT_ARGB4444;
 430       break;
 431
 432    case MESA_FORMAT_ARGB8888:
 433       t->intel.texelBytes = 4;
 434       textureFormat = MAPSURF_32BIT | MT_32BIT_ARGB8888;
 435       break;
 436
 437    case MESA_FORMAT_YCBCR_REV:
 438       t->intel.texelBytes = 2;
 439       textureFormat = (MAPSURF_422 | MT_422_YCRCB_NORMAL);
 440       ss2 |= SS2_COLORSPACE_CONVERSION;
 441       break;
 442
 443    case MESA_FORMAT_YCBCR:
 444       t->intel.texelBytes = 2;
 445       textureFormat = (MAPSURF_422 | MT_422_YCRCB_SWAPY);
 446       ss2 |= SS2_COLORSPACE_CONVERSION;
 447       break;
 448
 449    case MESA_FORMAT_RGB_FXT1:
 450    case MESA_FORMAT_RGBA_FXT1:
 451      t->intel.texelBytes = 2;
 452      textureFormat = (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
 453      break;
 454
 455    case MESA_FORMAT_Z16:
 456       t->intel.texelBytes = 2;
 457       textureFormat = (MAPSURF_16BIT | MT_16BIT_L16);
 458       break;
 459
 460    case MESA_FORMAT_RGBA_DXT1:
 461    case MESA_FORMAT_RGB_DXT1:
 462      /*
 463       * DXTn pitches are Width/4 * blocksize in bytes
 464       * for DXT1: blocksize=8 so Width/4*8 = Width * 2
 465       * for DXT3/5: blocksize=16 so Width/4*16 = Width * 4
 466       */
 467      t->intel.texelBytes = 2;
 468      textureFormat = (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
 469      break;
 470
 471    case MESA_FORMAT_RGBA_DXT3:
 472      t->intel.texelBytes = 4;
 473      textureFormat = (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
 474      break;
 475
 476    case MESA_FORMAT_RGBA_DXT5:
 477      t->intel.texelBytes = 4;
 478      textureFormat = (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
 479      break;
 480
 481 #if 0
 482    case MESA_FORMAT_Z24_S8:
 483       t->intel.texelBytes = 4;
 484       textureFormat = (MAPSURF_32BIT | MT_32BIT_xL824);
 485       break;
 486 #endif
 487
 488    default:
 489       fprintf(stderr, "%s: bad image format %x\n", __FUNCTION__,
 490               baseImage->TexFormat->MesaFormat);
 491       abort();
 492    }
 493
 494    switch (i915->intel.intelScreen->deviceID) {
 495    case PCI_CHIP_I945_G:
 496    case PCI_CHIP_I945_GM:
 497    case PCI_CHIP_I945_GME:
 498    case PCI_CHIP_G33_G:
 499    case PCI_CHIP_Q33_G:
 500    case PCI_CHIP_Q35_G:
 501        i945LayoutTextureImages( i915, tObj );
 502        break;
 503    default:
 504        i915LayoutTextureImages( i915, tObj );
 505        break;
 506    }
 507
 508    t->Setup[I915_TEXREG_MS3] =
 509       (((tObj->Image[0][t->intel.base.firstLevel]->Height - 1) << MS3_HEIGHT_SHIFT) |
 510        ((tObj->Image[0][t->intel.base.firstLevel]->Width - 1) << MS3_WIDTH_SHIFT) |
 511        textureFormat |
 512        MS3_USE_FENCE_REGS);
 513
 514    t->Setup[I915_TEXREG_MS4] =
 515       ((((t->intel.Pitch / 4) - 1) << MS4_PITCH_SHIFT) |
 516        MS4_CUBE_FACE_ENA_MASK |
 517        (((t->intel.max_level * 4)) << MS4_MAX_LOD_SHIFT) |
 518        ((tObj->Image[0][t->intel.base.firstLevel]->Depth - 1) << MS4_VOLUME_DEPTH_SHIFT));
 519
 520    t->Setup[I915_TEXREG_SS2] &= ~(SS2_COLORSPACE_CONVERSION);
 521    t->Setup[I915_TEXREG_SS2] |= ss2;
 522
 523    t->intel.dirty = I915_UPLOAD_TEX_ALL;
 524
 525 }
 526
 527
 528 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
 529  * Intel drivers for "other operating systems" implement GL_CLAMP as
 530  * GL_CLAMP_TO_EDGE, so the same is done here.
 531  */
 532 static GLuint translate_wrap_mode( GLenum wrap )
 533 {
 534    switch( wrap ) {
 535    case GL_REPEAT: return TEXCOORDMODE_WRAP;
 536    case GL_CLAMP:  return TEXCOORDMODE_CLAMP_EDGE; /* not quite correct */
 537    case GL_CLAMP_TO_EDGE: return TEXCOORDMODE_CLAMP_EDGE;
 538    case GL_CLAMP_TO_BORDER: return TEXCOORDMODE_CLAMP_BORDER;
 539    case GL_MIRRORED_REPEAT: return TEXCOORDMODE_MIRROR;
 540    default: return TEXCOORDMODE_WRAP;
 541    }
 542 }
 543
 544
 545 /**
 546  */
 547 static void i915ImportTexObjState( struct gl_texture_object *texObj )
 548 {
 549    i915TextureObjectPtr t = (i915TextureObjectPtr)texObj->DriverData;
 550    int minFilt = 0, mipFilt = 0, magFilt = 0, shadow = 0;
 551
 552    if(INTEL_DEBUG&DEBUG_DRI)
 553       fprintf(stderr, "%s\n", __FUNCTION__);
 554
 555    switch (texObj->MinFilter) {
 556    case GL_NEAREST:
 557       minFilt = FILTER_NEAREST;
 558       mipFilt = MIPFILTER_NONE;
 559       break;
 560    case GL_LINEAR:
 561       minFilt = FILTER_LINEAR;
 562       mipFilt = MIPFILTER_NONE;
 563       break;
 564    case GL_NEAREST_MIPMAP_NEAREST:
 565       minFilt = FILTER_NEAREST;
 566       mipFilt = MIPFILTER_NEAREST;
 567       break;
 568    case GL_LINEAR_MIPMAP_NEAREST:
 569       minFilt = FILTER_LINEAR;
 570       mipFilt = MIPFILTER_NEAREST;
 571       break;
 572    case GL_NEAREST_MIPMAP_LINEAR:
 573       minFilt = FILTER_NEAREST;
 574       mipFilt = MIPFILTER_LINEAR;
 575       break;
 576    case GL_LINEAR_MIPMAP_LINEAR:
 577       minFilt = FILTER_LINEAR;
 578       mipFilt = MIPFILTER_LINEAR;
 579       break;
 580    default:
 581       break;
 582    }
 583
 584    if ( texObj->MaxAnisotropy > 1.0 ) {
 585       minFilt = FILTER_ANISOTROPIC;
 586       magFilt = FILTER_ANISOTROPIC;
 587    }
 588    else {
 589       switch (texObj->MagFilter) {
 590       case GL_NEAREST:
 591          magFilt = FILTER_NEAREST;
 592          break;
 593       case GL_LINEAR:
 594          magFilt = FILTER_LINEAR;
 595          break;
 596       default:
 597          break;
 598       }
 599    }
 600
 601    if (texObj->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB &&
 602        texObj->Target != GL_TEXTURE_3D) {
 603
 604       shadow = SS2_SHADOW_ENABLE;
 605       shadow |= intel_translate_compare_func( texObj->CompareFunc );
 606
 607       minFilt = FILTER_4X4_FLAT;
 608       magFilt = FILTER_4X4_FLAT;
 609    }
 610
 611
 612    t->Setup[I915_TEXREG_SS2] &= ~(SS2_MIN_FILTER_MASK |
 613                                  SS2_MIP_FILTER_MASK |
 614                                  SS2_MAG_FILTER_MASK |
 615                                  SS2_SHADOW_ENABLE |
 616                                  SS2_SHADOW_FUNC_MASK);
 617    t->Setup[I915_TEXREG_SS2] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
 618                                 (mipFilt << SS2_MIP_FILTER_SHIFT) |
 619                                 (magFilt << SS2_MAG_FILTER_SHIFT) |
 620                                 shadow);
 621
 622    {
 623       GLuint ss3 = t->Setup[I915_TEXREG_SS3] & ~(SS3_TCX_ADDR_MODE_MASK |
 624                                                 SS3_TCY_ADDR_MODE_MASK |
 625                                                 SS3_TCZ_ADDR_MODE_MASK);
 626       GLenum ws = texObj->WrapS;
 627       GLenum wt = texObj->WrapT;
 628       GLenum wr = texObj->WrapR;
 629
 630       t->refs_border_color = 0;
 631
 632       if (texObj->Target == GL_TEXTURE_3D &&
 633           (texObj->MinFilter != GL_NEAREST ||
 634            texObj->MagFilter != GL_NEAREST)) {
 635
 636          /* Try to mimic GL_CLAMP functionality a little better -
 637           * switch to CLAMP_TO_BORDER whenever a non-NEAREST filter is
 638           * in use.  Only do this for 3D textures at the moment --
 639           * doing it universally would fix the conform texbc.c
 640           * failure, though.
 641           */
 642          if (ws == GL_CLAMP) ws = GL_CLAMP_TO_BORDER;
 643          if (wt == GL_CLAMP) wt = GL_CLAMP_TO_BORDER;
 644          if (wr == GL_CLAMP) wr = GL_CLAMP_TO_BORDER;
 645
 646          /* 3D textures don't seem to respect the border color.
 647           * Fallback if there's ever a danger that they might refer to
 648           * it.
 649           */
 650          if (ws == GL_CLAMP_TO_BORDER) t->refs_border_color = 1;
 651          if (wt == GL_CLAMP_TO_BORDER) t->refs_border_color = 1;
 652          if (wr == GL_CLAMP_TO_BORDER) t->refs_border_color = 1;
 653       }
 654
 655       ss3 |= translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT;
 656       ss3 |= translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT;
 657       ss3 |= translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT;
 658
 659       if (ss3 != t->Setup[I915_TEXREG_SS3]) {
 660          t->intel.dirty = I915_UPLOAD_TEX_ALL;
 661          t->Setup[I915_TEXREG_SS3] = ss3;
 662       }
 663    }
 664
 665    {
 666       const GLubyte *color = texObj->_BorderChan;
 667
 668       t->Setup[I915_TEXREG_SS4] = INTEL_PACKCOLOR8888(color[0],color[1],
 669                                                      color[2],color[3]);
 670    }
 671 }
 672
 673
 674
 675 static void i915_import_tex_unit( i915ContextPtr i915,
 676                                  i915TextureObjectPtr t,
 677                                  GLuint unit )
 678 {
 679    GLuint state[I915_TEX_SETUP_SIZE];
 680
 681    if(INTEL_DEBUG&DEBUG_TEXTURE)
 682       fprintf(stderr, "%s unit(%d)\n", __FUNCTION__, unit);
 683
 684    if (i915->intel.CurrentTexObj[unit])
 685       i915->intel.CurrentTexObj[unit]->base.bound &= ~(1U << unit);
 686
 687    i915->intel.CurrentTexObj[unit] = (intelTextureObjectPtr)t;
 688    t->intel.base.bound |= (1 << unit);
 689
 690    if (t->intel.dirty & I915_UPLOAD_TEX(unit)) {
 691       i915ImportTexObjState( t->intel.base.tObj );
 692       t->intel.dirty &= ~I915_UPLOAD_TEX(unit);
 693    }
 694
 695    state[I915_TEXREG_MS2] = t->intel.TextureOffset;
 696    state[I915_TEXREG_MS3] = t->Setup[I915_TEXREG_MS3];
 697    state[I915_TEXREG_MS4] = t->Setup[I915_TEXREG_MS4];
 698
 699    state[I915_TEXREG_SS2] = (i915->state.Tex[unit][I915_TEXREG_SS2] &
 700                             SS2_LOD_BIAS_MASK);
 701    state[I915_TEXREG_SS2] |= (t->Setup[I915_TEXREG_SS2] & ~SS2_LOD_BIAS_MASK);
 702
 703    state[I915_TEXREG_SS3] = (i915->state.Tex[unit][I915_TEXREG_SS3] &
 704                             SS3_NORMALIZED_COORDS);
 705    state[I915_TEXREG_SS3] |= (t->Setup[I915_TEXREG_SS3] &
 706                              ~(SS3_NORMALIZED_COORDS|
 707                                SS3_TEXTUREMAP_INDEX_MASK));
 708
 709    state[I915_TEXREG_SS3] |= (unit<<SS3_TEXTUREMAP_INDEX_SHIFT);
 710
 711    state[I915_TEXREG_SS4] = t->Setup[I915_TEXREG_SS4];
 712
 713
 714    if (memcmp(state, i915->state.Tex[unit], sizeof(state)) != 0) {
 715       I915_STATECHANGE( i915, I915_UPLOAD_TEX(unit) );
 716       memcpy(i915->state.Tex[unit], state, sizeof(state));
 717    }
 718 }
 719
 720
 721
 722 static GLboolean enable_tex_common( GLcontext *ctx, GLuint unit )
 723 {
 724    i915ContextPtr i915 = I915_CONTEXT(ctx);
 725    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 726    struct gl_texture_object *tObj = texUnit->_Current;
 727    i915TextureObjectPtr t = (i915TextureObjectPtr)tObj->DriverData;
 728
 729    if (0) fprintf(stderr, "%s %d\n", __FUNCTION__, unit);
 730
 731    if (!(i915->state.active & I915_UPLOAD_TEX(unit))) {
 732       I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_TRUE);
 733    }
 734
 735    /* Fallback if there's a texture border */
 736    if ( tObj->Image[0][tObj->BaseLevel]->Border > 0 ) {
 737       return GL_FALSE;
 738    }
 739
 740
 741    /* Update state if this is a different texture object to last
 742     * time.
 743     */
 744    if (i915->intel.CurrentTexObj[unit] != &t->intel ||
 745        (t->intel.dirty & I915_UPLOAD_TEX(unit))) {
 746       i915_import_tex_unit( i915, t, unit);
 747       i915->tex_program.translated = 0;
 748    }
 749
 750    return GL_TRUE;
 751 }
 752
 753 static GLboolean enable_tex_rect( GLcontext *ctx, GLuint unit )
 754 {
 755    i915ContextPtr i915 = I915_CONTEXT(ctx);
 756    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 757    struct gl_texture_object *tObj = texUnit->_Current;
 758    i915TextureObjectPtr t = (i915TextureObjectPtr)tObj->DriverData;
 759    GLuint ss3 = i915->state.Tex[unit][I915_TEXREG_SS3];
 760
 761    ss3 &= ~SS3_NORMALIZED_COORDS;
 762
 763    if (ss3 != i915->state.Tex[unit][I915_TEXREG_SS3]) {
 764       I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 765       i915->state.Tex[unit][I915_TEXREG_SS3] = ss3;
 766    }
 767
 768    /* Upload teximages (not pipelined)
 769     */
 770    if (t->intel.base.dirty_images[0]) {
 771       i915SetTexImages( i915, tObj );
 772       if (!intelUploadTexImages( &i915->intel, &t->intel, 0 )) {
 773          return GL_FALSE;
 774       }
 775    }
 776
 777    return GL_TRUE;
 778 }
 779
 780
 781 static GLboolean enable_tex_2d( GLcontext *ctx, GLuint unit )
 782 {
 783    i915ContextPtr i915 = I915_CONTEXT(ctx);
 784    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 785    struct gl_texture_object *tObj = texUnit->_Current;
 786    i915TextureObjectPtr t = (i915TextureObjectPtr)tObj->DriverData;
 787    GLuint ss3 = i915->state.Tex[unit][I915_TEXREG_SS3];
 788
 789    ss3 |= SS3_NORMALIZED_COORDS;
 790
 791    if (ss3 != i915->state.Tex[unit][I915_TEXREG_SS3]) {
 792       I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 793       i915->state.Tex[unit][I915_TEXREG_SS3] = ss3;
 794    }
 795
 796    /* Upload teximages (not pipelined)
 797     */
 798    if (t->intel.base.dirty_images[0]) {
 799       i915SetTexImages( i915, tObj );
 800       if (!intelUploadTexImages( &i915->intel, &t->intel, 0 )) {
 801          return GL_FALSE;
 802       }
 803    }
 804
 805    return GL_TRUE;
 806 }
 807
 808 static GLboolean enable_tex_cube( GLcontext *ctx, GLuint unit )
 809 {
 810    i915ContextPtr i915 = I915_CONTEXT(ctx);
 811    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 812    struct gl_texture_object *tObj = texUnit->_Current;
 813    i915TextureObjectPtr t = (i915TextureObjectPtr)tObj->DriverData;
 814    GLuint ss3 = i915->state.Tex[unit][I915_TEXREG_SS3];
 815    GLuint face;
 816
 817    ss3 |= SS3_NORMALIZED_COORDS;
 818
 819    if (ss3 != i915->state.Tex[unit][I915_TEXREG_SS3]) {
 820       I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 821       i915->state.Tex[unit][I915_TEXREG_SS3] = ss3;
 822    }
 823
 824    /* Upload teximages (not pipelined)
 825     */
 826    if ( t->intel.base.dirty_images[0] || t->intel.base.dirty_images[1] ||
 827         t->intel.base.dirty_images[2] || t->intel.base.dirty_images[3] ||
 828         t->intel.base.dirty_images[4] || t->intel.base.dirty_images[5] ) {
 829       i915SetTexImages( i915, tObj );
 830    }
 831
 832    /* upload (per face) */
 833    for (face = 0; face < 6; face++) {
 834       if (t->intel.base.dirty_images[face]) {
 835          if (!intelUploadTexImages( &i915->intel, &t->intel, face )) {
 836             return GL_FALSE;
 837          }
 838       }
 839    }
 840
 841
 842    return GL_TRUE;
 843 }
 844
 845 static GLboolean enable_tex_3d( GLcontext *ctx, GLuint unit )
 846 {
 847    struct gl_texture_object *tObj = ctx->Texture.Unit[unit]._Current;
 848    i915TextureObjectPtr t = (i915TextureObjectPtr)tObj->DriverData;
 849
 850    /* 3D textures on I915 seem to get bogus border colors, hence this
 851     * fallback:
 852     */
 853    if (t->refs_border_color)
 854       return GL_FALSE;
 855
 856    return GL_TRUE;
 857 }
 858
 859
 860
 861
 862 static GLboolean disable_tex( GLcontext *ctx, GLuint unit )
 863 {
 864    i915ContextPtr i915 = I915_CONTEXT(ctx);
 865
 866    if (i915->state.active & I915_UPLOAD_TEX(unit)) {
 867       I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_FALSE);
 868    }
 869
 870    /* The old texture is no longer bound to this texture unit.
 871     * Mark it as such.
 872     */
 873    if ( i915->intel.CurrentTexObj[unit] != NULL ) {
 874       i915->intel.CurrentTexObj[unit]->base.bound &= ~(1U << 0);
 875       i915->intel.CurrentTexObj[unit] = NULL;
 876    }
 877
 878    return GL_TRUE;
 879 }
 880
 881 static GLboolean i915UpdateTexUnit( GLcontext *ctx, GLuint unit )
 882 {
 883    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 884
 885    if (texUnit->_ReallyEnabled &&
 886        INTEL_CONTEXT(ctx)->intelScreen->tex.size < 2048 * 1024)
 887       return GL_FALSE;
 888
 889    switch (texUnit->_ReallyEnabled) {
 890    case TEXTURE_1D_BIT:
 891    case TEXTURE_2D_BIT:
 892       return (enable_tex_2d( ctx, unit ) &&
 893               enable_tex_common( ctx, unit ));
 894    case TEXTURE_RECT_BIT:
 895       return (enable_tex_rect( ctx, unit ) &&
 896               enable_tex_common( ctx, unit ));
 897    case TEXTURE_CUBE_BIT:
 898       return (enable_tex_cube( ctx, unit ) &&
 899               enable_tex_common( ctx, unit ));
 900    case TEXTURE_3D_BIT:
 901        return (enable_tex_2d( ctx, unit ) &&
 902                enable_tex_common( ctx, unit ) &&
 903                enable_tex_3d( ctx, unit));
 904    case 0:
 905       return disable_tex( ctx, unit );
 906    default:
 907       return GL_FALSE;
 908    }
 909 }
 910
 911
 912 void i915UpdateTextureState( intelContextPtr intel )
 913 {
 914    GLcontext *ctx = &intel->ctx;
 915    GLboolean ok = GL_TRUE;
 916    GLuint i;
 917
 918    for (i = 0 ; i < I915_TEX_UNITS && ok ; i++) {
 919       ok = i915UpdateTexUnit( ctx, i );
 920    }
 921
 922    FALLBACK( intel, I915_FALLBACK_TEXTURE, !ok );
 923 }
 924
 925
 926