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 i915SetTexImages( i915ContextPtr i915,
  64                              struct gl_texture_object *tObj )
  65 {
  66    GLuint total_height, pitch, i, textureFormat;
  67    i915TextureObjectPtr t = (i915TextureObjectPtr) tObj->DriverData;
  68    const struct gl_texture_image *baseImage = tObj->Image[0][tObj->BaseLevel];
  69    GLint firstLevel, lastLevel, numLevels;
  70    GLint ss2 = 0;
  71
  72    switch( baseImage->TexFormat->MesaFormat ) {
  73    case MESA_FORMAT_L8:
  74       t->intel.texelBytes = 1;
  75       textureFormat = MAPSURF_8BIT | MT_8BIT_L8;
  76       break;
  77
  78    case MESA_FORMAT_I8:
  79       t->intel.texelBytes = 1;
  80       textureFormat = MAPSURF_8BIT | MT_8BIT_I8;
  81       break;
  82
  83    case MESA_FORMAT_A8:
  84       t->intel.texelBytes = 1;
  85       textureFormat = MAPSURF_8BIT | MT_8BIT_A8;
  86       break;
  87
  88    case MESA_FORMAT_AL88:
  89       t->intel.texelBytes = 2;
  90       textureFormat = MAPSURF_16BIT | MT_16BIT_AY88;
  91       break;
  92
  93    case MESA_FORMAT_RGB565:
  94       t->intel.texelBytes = 2;
  95       textureFormat = MAPSURF_16BIT | MT_16BIT_RGB565;
  96       break;
  97
  98    case MESA_FORMAT_ARGB1555:
  99       t->intel.texelBytes = 2;
 100       textureFormat = MAPSURF_16BIT | MT_16BIT_ARGB1555;
 101       break;
 102
 103    case MESA_FORMAT_ARGB4444:
 104       t->intel.texelBytes = 2;
 105       textureFormat = MAPSURF_16BIT | MT_16BIT_ARGB4444;
 106       break;
 107
 108    case MESA_FORMAT_ARGB8888:
 109       t->intel.texelBytes = 4;
 110       textureFormat = MAPSURF_32BIT | MT_32BIT_ARGB8888;
 111       break;
 112
 113    case MESA_FORMAT_YCBCR_REV:
 114       t->intel.texelBytes = 2;
 115       textureFormat = (MAPSURF_422 | MT_422_YCRCB_NORMAL);
 116       ss2 |= SS2_COLORSPACE_CONVERSION;
 117       break;
 118
 119    case MESA_FORMAT_YCBCR:
 120       t->intel.texelBytes = 2;
 121       textureFormat = (MAPSURF_422 | MT_422_YCRCB_SWAPY);
 122       ss2 |= SS2_COLORSPACE_CONVERSION;
 123       break;
 124
 125    case MESA_FORMAT_RGB_FXT1:
 126    case MESA_FORMAT_RGBA_FXT1:
 127      t->intel.texelBytes = 2;
 128      textureFormat = (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
 129      break;
 130    case MESA_FORMAT_RGBA_DXT1:
 131    case MESA_FORMAT_RGB_DXT1:
 132      /*
 133       * DXTn pitches are Width/4 * blocksize in bytes
 134       * for DXT1: blocksize=8 so Width/4*8 = Width * 2
 135       * for DXT3/5: blocksize=16 so Width/4*16 = Width * 4
 136       */
 137      t->intel.texelBytes = 2;
 138      textureFormat = (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
 139      break;
 140    case MESA_FORMAT_RGBA_DXT3:
 141      t->intel.texelBytes = 4;
 142      textureFormat = (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
 143      break;
 144    case MESA_FORMAT_RGBA_DXT5:
 145      t->intel.texelBytes = 4;
 146      textureFormat = (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
 147      break;
 148
 149    default:
 150       fprintf(stderr, "%s: bad image format\n", __FUNCTION__);
 151       abort();
 152    }
 153
 154    /* Compute which mipmap levels we really want to send to the hardware.
 155     */
 156    driCalculateTextureFirstLastLevel( (driTextureObject *) t );
 157
 158
 159    /* Figure out the amount of memory required to hold all the mipmap
 160     * levels.  Choose the smallest pitch to accomodate the largest
 161     * mipmap:
 162     */
 163    firstLevel = t->intel.base.firstLevel;
 164    lastLevel = t->intel.base.lastLevel;
 165    numLevels = lastLevel - firstLevel + 1;
 166
 167
 168
 169    /* All images must be loaded at this pitch.  Count the number of
 170     * lines required:
 171     */
 172    switch (tObj->Target) {
 173    case GL_TEXTURE_CUBE_MAP: {
 174       const GLuint dim = tObj->Image[0][firstLevel]->Width;
 175       GLuint face;
 176
 177       pitch = dim * t->intel.texelBytes;
 178       pitch *= 2;               /* double pitch for cube layouts */
 179       pitch = (pitch + 3) & ~3;
 180
 181       total_height = dim * 4;
 182
 183       for ( face = 0 ; face < 6 ; face++) {
 184          GLuint x = initial_offsets[face][0] * dim;
 185          GLuint y = initial_offsets[face][1] * dim;
 186          GLuint d = dim;
 187
 188          t->intel.base.dirty_images[face] = ~0;
 189
 190          assert(tObj->Image[face][firstLevel]->Width == dim);
 191          assert(tObj->Image[face][firstLevel]->Height == dim);
 192
 193          for (i = 0; i < numLevels; i++) {
 194             t->intel.image[face][i].image = tObj->Image[face][firstLevel + i];
 195             if (!t->intel.image[face][i].image) {
 196                fprintf(stderr, "no image %d %d\n", face, i);
 197                break;           /* can't happen */
 198             }
 199
 200             t->intel.image[face][i].offset =
 201                y * pitch + x * t->intel.texelBytes;
 202             t->intel.image[face][i].internalFormat = baseImage->Format;
 203
 204             d >>= 1;
 205             x += step_offsets[face][0] * d;
 206             y += step_offsets[face][1] * d;
 207          }
 208       }
 209       break;
 210    }
 211    case GL_TEXTURE_3D: {
 212       GLuint virtual_height;
 213       GLuint tmp_numLevels = numLevels;
 214       pitch = tObj->Image[0][firstLevel]->Width * t->intel.texelBytes;
 215       pitch = (pitch + 3) & ~3;
 216       t->intel.base.dirty_images[0] = ~0;
 217
 218       /* Calculate the size of a single slice.  Hardware demands a
 219        * minimum of 8 mipmaps, some of which might ultimately not be
 220        * used:
 221        */
 222       if (tmp_numLevels < 9)
 223          tmp_numLevels = 9;
 224
 225       virtual_height = tObj->Image[0][firstLevel]->Height;
 226
 227       for ( total_height = i = 0 ; i < tmp_numLevels ; i++ ) {
 228          t->intel.image[0][i].image = tObj->Image[0][firstLevel + i];
 229          if (t->intel.image[0][i].image) {
 230             t->intel.image[0][i].offset = total_height * pitch;
 231             t->intel.image[0][i].internalFormat = baseImage->Format;
 232          }
 233
 234          total_height += MAX2(2, virtual_height);
 235          virtual_height >>= 1;
 236       }
 237
 238       t->intel.depth_pitch = total_height * pitch;
 239
 240       /* Multiply slice size by texture depth for total size.  It's
 241        * remarkable how wasteful of memory all the i8x0 texture
 242        * layouts are.
 243        */
 244       total_height *= t->intel.image[0][0].image->Depth;
 245       break;
 246    }
 247    default:
 248       pitch = tObj->Image[0][firstLevel]->Width * t->intel.texelBytes;
 249       pitch = (pitch + 3) & ~3;
 250       t->intel.base.dirty_images[0] = ~0;
 251
 252       for ( total_height = i = 0 ; i < numLevels ; i++ ) {
 253          t->intel.image[0][i].image = tObj->Image[0][firstLevel + i];
 254          if (!t->intel.image[0][i].image)
 255             break;
 256
 257          t->intel.image[0][i].offset = total_height * pitch;
 258          t->intel.image[0][i].internalFormat = baseImage->Format;
 259          if (t->intel.image[0][i].image->IsCompressed)
 260          {
 261            if (t->intel.image[0][i].image->Height > 4)
 262              total_height += t->intel.image[0][i].image->Height/4;
 263            else
 264              total_height += 1;
 265          }
 266          else
 267            total_height += MAX2(2, t->intel.image[0][i].image->Height);
 268       }
 269       break;
 270    }
 271
 272    t->intel.Pitch = pitch;
 273    t->intel.base.totalSize = total_height*pitch;
 274    t->intel.max_level = numLevels-1;
 275    t->Setup[I915_TEXREG_MS3] =
 276       (((tObj->Image[0][firstLevel]->Height - 1) << MS3_HEIGHT_SHIFT) |
 277        ((tObj->Image[0][firstLevel]->Width - 1) << MS3_WIDTH_SHIFT) |
 278        textureFormat |
 279        MS3_USE_FENCE_REGS);
 280    t->Setup[I915_TEXREG_MS4] =
 281       ((((pitch / 4) - 1) << MS4_PITCH_SHIFT) |
 282        MS4_CUBE_FACE_ENA_MASK |
 283        (((t->intel.max_level * 4)) << MS4_MAX_LOD_SHIFT) |
 284        ((tObj->Image[0][firstLevel]->Depth - 1) << MS4_VOLUME_DEPTH_SHIFT));
 285
 286    t->Setup[I915_TEXREG_SS2] &= ~SS2_COLORSPACE_CONVERSION;
 287    t->Setup[I915_TEXREG_SS2] |= ss2;
 288
 289    t->intel.dirty = I915_UPLOAD_TEX_ALL;
 290 }
 291
 292
 293 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
 294  * Intel drivers for "other operating systems" implement GL_CLAMP as
 295  * GL_CLAMP_TO_EDGE, so the same is done here.
 296  */
 297 static GLuint translate_wrap_mode( GLenum wrap )
 298 {
 299    switch( wrap ) {
 300    case GL_REPEAT: return TEXCOORDMODE_WRAP;
 301    case GL_CLAMP:  return TEXCOORDMODE_CLAMP_EDGE; /* not quite correct */
 302    case GL_CLAMP_TO_EDGE: return TEXCOORDMODE_CLAMP_EDGE;
 303    case GL_CLAMP_TO_BORDER: return TEXCOORDMODE_CLAMP_BORDER;
 304    case GL_MIRRORED_REPEAT: return TEXCOORDMODE_MIRROR;
 305    default: return TEXCOORDMODE_WRAP;
 306    }
 307 }
 308
 309
 310 /**
 311  */
 312 static void i915ImportTexObjState( struct gl_texture_object *texObj )
 313 {
 314    i915TextureObjectPtr t = (i915TextureObjectPtr)texObj->DriverData;
 315    int minFilt = 0, mipFilt = 0, magFilt = 0;
 316
 317    if(INTEL_DEBUG&DEBUG_DRI)
 318       fprintf(stderr, "%s\n", __FUNCTION__);
 319
 320    switch (texObj->MinFilter) {
 321    case GL_NEAREST:
 322       minFilt = FILTER_NEAREST;
 323       mipFilt = MIPFILTER_NONE;
 324       break;
 325    case GL_LINEAR:
 326       minFilt = FILTER_LINEAR;
 327       mipFilt = MIPFILTER_NONE;
 328       break;
 329    case GL_NEAREST_MIPMAP_NEAREST:
 330       minFilt = FILTER_NEAREST;
 331       mipFilt = MIPFILTER_NEAREST;
 332       break;
 333    case GL_LINEAR_MIPMAP_NEAREST:
 334       minFilt = FILTER_LINEAR;
 335       mipFilt = MIPFILTER_NEAREST;
 336       break;
 337    case GL_NEAREST_MIPMAP_LINEAR:
 338       minFilt = FILTER_NEAREST;
 339       mipFilt = MIPFILTER_LINEAR;
 340       break;
 341    case GL_LINEAR_MIPMAP_LINEAR:
 342       minFilt = FILTER_LINEAR;
 343       mipFilt = MIPFILTER_LINEAR;
 344       break;
 345    default:
 346       break;
 347    }
 348
 349    if ( texObj->MaxAnisotropy > 1.0 ) {
 350       minFilt = FILTER_ANISOTROPIC;
 351       magFilt = FILTER_ANISOTROPIC;
 352    }
 353    else {
 354       switch (texObj->MagFilter) {
 355       case GL_NEAREST:
 356          magFilt = FILTER_NEAREST;
 357          break;
 358       case GL_LINEAR:
 359          magFilt = FILTER_LINEAR;
 360          break;
 361       default:
 362          break;
 363       }
 364    }
 365
 366    t->Setup[I915_TEXREG_SS2] &= ~SS2_MIN_FILTER_MASK;
 367    t->Setup[I915_TEXREG_SS2] &= ~SS2_MIP_FILTER_MASK;
 368    t->Setup[I915_TEXREG_SS2] &= ~SS2_MAG_FILTER_MASK;
 369    t->Setup[I915_TEXREG_SS2] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
 370                                 (mipFilt << SS2_MIP_FILTER_SHIFT) |
 371                                 (magFilt << SS2_MAG_FILTER_SHIFT));
 372
 373    {
 374       GLuint ss3 = t->Setup[I915_TEXREG_SS3] & ~(SS3_TCX_ADDR_MODE_MASK |
 375                                                 SS3_TCY_ADDR_MODE_MASK |
 376                                                 SS3_TCZ_ADDR_MODE_MASK);
 377       GLenum ws = texObj->WrapS;
 378       GLenum wt = texObj->WrapT;
 379       GLenum wr = texObj->WrapR;
 380
 381       t->refs_border_color = 0;
 382
 383       if (texObj->Target == GL_TEXTURE_3D &&
 384           (texObj->MinFilter != GL_NEAREST ||
 385            texObj->MagFilter != GL_NEAREST)) {
 386
 387          /* Try to mimic GL_CLAMP functionality a little better -
 388           * switch to CLAMP_TO_BORDER whenever a non-NEAREST filter is
 389           * in use.  Only do this for 3D textures at the moment --
 390           * doing it universally would fix the conform texbc.c
 391           * failure, though.
 392           */
 393          if (ws == GL_CLAMP) ws = GL_CLAMP_TO_BORDER;
 394          if (wt == GL_CLAMP) wt = GL_CLAMP_TO_BORDER;
 395          if (wr == GL_CLAMP) wr = GL_CLAMP_TO_BORDER;
 396
 397          /* 3D textures don't seem to respect the border color.
 398           * Fallback if there's ever a danger that they might refer to
 399           * it.
 400           */
 401          if (ws == GL_CLAMP_TO_BORDER) t->refs_border_color = 1;
 402          if (wt == GL_CLAMP_TO_BORDER) t->refs_border_color = 1;
 403          if (wr == GL_CLAMP_TO_BORDER) t->refs_border_color = 1;
 404       }
 405
 406       ss3 |= translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT;
 407       ss3 |= translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT;
 408       ss3 |= translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT;
 409
 410       if (ss3 != t->Setup[I915_TEXREG_SS3]) {
 411          t->intel.dirty = I915_UPLOAD_TEX_ALL;
 412          t->Setup[I915_TEXREG_SS3] = ss3;
 413       }
 414    }
 415
 416    {
 417       const GLubyte *color = texObj->_BorderChan;
 418
 419       t->Setup[I915_TEXREG_SS4] = INTEL_PACKCOLOR8888(color[0],color[1],
 420                                                      color[2],color[3]);
 421    }
 422 }
 423
 424
 425
 426 static void i915_import_tex_unit( i915ContextPtr i915,
 427                                  i915TextureObjectPtr t,
 428                                  GLuint unit )
 429 {
 430    GLuint state[I915_TEX_SETUP_SIZE];
 431
 432    if(INTEL_DEBUG&DEBUG_TEXTURE)
 433       fprintf(stderr, "%s unit(%d)\n", __FUNCTION__, unit);
 434
 435    if (i915->intel.CurrentTexObj[unit])
 436       i915->intel.CurrentTexObj[unit]->base.bound &= ~(1U << unit);
 437
 438    i915->intel.CurrentTexObj[unit] = (intelTextureObjectPtr)t;
 439    t->intel.base.bound |= (1 << unit);
 440
 441    if (t->intel.dirty & I915_UPLOAD_TEX(unit)) {
 442       i915ImportTexObjState( t->intel.base.tObj );
 443       t->intel.dirty &= ~I915_UPLOAD_TEX(unit);
 444    }
 445
 446    state[I915_TEXREG_MS2] = t->intel.TextureOffset;
 447    state[I915_TEXREG_MS3] = t->Setup[I915_TEXREG_MS3];
 448    state[I915_TEXREG_MS4] = t->Setup[I915_TEXREG_MS4];
 449
 450    state[I915_TEXREG_SS2] = (i915->state.Tex[unit][I915_TEXREG_SS2] &
 451                             SS2_LOD_BIAS_MASK);
 452    state[I915_TEXREG_SS2] |= (t->Setup[I915_TEXREG_SS2] & ~SS2_LOD_BIAS_MASK);
 453
 454    state[I915_TEXREG_SS3] = (i915->state.Tex[unit][I915_TEXREG_SS3] &
 455                             SS3_NORMALIZED_COORDS);
 456    state[I915_TEXREG_SS3] |= (t->Setup[I915_TEXREG_SS3] &
 457                              ~(SS3_NORMALIZED_COORDS|
 458                                SS3_TEXTUREMAP_INDEX_MASK));
 459
 460    state[I915_TEXREG_SS3] |= (unit<<SS3_TEXTUREMAP_INDEX_SHIFT);
 461
 462    state[I915_TEXREG_SS4] = t->Setup[I915_TEXREG_SS4];
 463
 464
 465    if (memcmp(state, i915->state.Tex[unit], sizeof(state)) != 0) {
 466       I915_STATECHANGE( i915, I915_UPLOAD_TEX(unit) );
 467       memcpy(i915->state.Tex[unit], state, sizeof(state));
 468    }
 469 }
 470
 471
 472
 473 static GLboolean enable_tex_common( GLcontext *ctx, GLuint unit )
 474 {
 475    i915ContextPtr i915 = I915_CONTEXT(ctx);
 476    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 477    struct gl_texture_object *tObj = texUnit->_Current;
 478    i915TextureObjectPtr t = (i915TextureObjectPtr)tObj->DriverData;
 479
 480    if (0) fprintf(stderr, "%s %d\n", __FUNCTION__, unit);
 481
 482    if (!(i915->state.active & I915_UPLOAD_TEX(unit))) {
 483       I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_TRUE);
 484    }
 485
 486    /* Fallback if there's a texture border */
 487    if ( tObj->Image[0][tObj->BaseLevel]->Border > 0 ) {
 488       return GL_FALSE;
 489    }
 490
 491
 492    /* Update state if this is a different texture object to last
 493     * time.
 494     */
 495    if (i915->intel.CurrentTexObj[unit] != &t->intel ||
 496        (t->intel.dirty & I915_UPLOAD_TEX(unit))) {
 497       i915_import_tex_unit( i915, t, unit);
 498       i915->tex_program.translated = 0;
 499    }
 500
 501    return GL_TRUE;
 502 }
 503
 504 static GLboolean enable_tex_rect( GLcontext *ctx, GLuint unit )
 505 {
 506    i915ContextPtr i915 = I915_CONTEXT(ctx);
 507    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 508    struct gl_texture_object *tObj = texUnit->_Current;
 509    i915TextureObjectPtr t = (i915TextureObjectPtr)tObj->DriverData;
 510    GLuint ss3 = i915->state.Tex[unit][I915_TEXREG_SS3];
 511
 512    ss3 &= ~SS3_NORMALIZED_COORDS;
 513
 514    if (ss3 != i915->state.Tex[unit][I915_TEXREG_SS3]) {
 515       I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 516       i915->state.Tex[unit][I915_TEXREG_SS3] = ss3;
 517    }
 518
 519    /* Upload teximages (not pipelined)
 520     */
 521    if (t->intel.base.dirty_images[0]) {
 522       i915SetTexImages( i915, tObj );
 523       if (!intelUploadTexImages( &i915->intel, &t->intel, 0 )) {
 524          return GL_FALSE;
 525       }
 526    }
 527
 528    return GL_TRUE;
 529 }
 530
 531
 532 static GLboolean enable_tex_2d( GLcontext *ctx, GLuint unit )
 533 {
 534    i915ContextPtr i915 = I915_CONTEXT(ctx);
 535    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 536    struct gl_texture_object *tObj = texUnit->_Current;
 537    i915TextureObjectPtr t = (i915TextureObjectPtr)tObj->DriverData;
 538    GLuint ss3 = i915->state.Tex[unit][I915_TEXREG_SS3];
 539
 540    ss3 |= SS3_NORMALIZED_COORDS;
 541
 542    if (ss3 != i915->state.Tex[unit][I915_TEXREG_SS3]) {
 543       I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 544       i915->state.Tex[unit][I915_TEXREG_SS3] = ss3;
 545    }
 546
 547    /* Upload teximages (not pipelined)
 548     */
 549    if (t->intel.base.dirty_images[0]) {
 550       i915SetTexImages( i915, tObj );
 551       if (!intelUploadTexImages( &i915->intel, &t->intel, 0 )) {
 552          return GL_FALSE;
 553       }
 554    }
 555
 556    return GL_TRUE;
 557 }
 558
 559 static GLboolean enable_tex_cube( GLcontext *ctx, GLuint unit )
 560 {
 561    i915ContextPtr i915 = I915_CONTEXT(ctx);
 562    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 563    struct gl_texture_object *tObj = texUnit->_Current;
 564    i915TextureObjectPtr t = (i915TextureObjectPtr)tObj->DriverData;
 565    GLuint ss3 = i915->state.Tex[unit][I915_TEXREG_SS3];
 566    GLuint face;
 567
 568    ss3 |= SS3_NORMALIZED_COORDS;
 569
 570    if (ss3 != i915->state.Tex[unit][I915_TEXREG_SS3]) {
 571       I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 572       i915->state.Tex[unit][I915_TEXREG_SS3] = ss3;
 573    }
 574
 575    /* Upload teximages (not pipelined)
 576     */
 577    if ( t->intel.base.dirty_images[0] || t->intel.base.dirty_images[1] ||
 578         t->intel.base.dirty_images[2] || t->intel.base.dirty_images[3] ||
 579         t->intel.base.dirty_images[4] || t->intel.base.dirty_images[5] ) {
 580       i915SetTexImages( i915, tObj );
 581    }
 582
 583    /* upload (per face) */
 584    for (face = 0; face < 6; face++) {
 585       if (t->intel.base.dirty_images[face]) {
 586          if (!intelUploadTexImages( &i915->intel, &t->intel, face )) {
 587             return GL_FALSE;
 588          }
 589       }
 590    }
 591
 592
 593    return GL_TRUE;
 594 }
 595
 596 static GLboolean enable_tex_3d( GLcontext *ctx, GLuint unit )
 597 {
 598    struct gl_texture_object *tObj = ctx->Texture.Unit[unit]._Current;
 599    i915TextureObjectPtr t = (i915TextureObjectPtr)tObj->DriverData;
 600
 601    /* 3D textures on I915 seem to get bogus border colors, hence this
 602     * fallback:
 603     */
 604    if (t->refs_border_color)
 605       return GL_FALSE;
 606
 607    return GL_TRUE;
 608 }
 609
 610
 611
 612
 613 static GLboolean disable_tex( GLcontext *ctx, GLuint unit )
 614 {
 615    i915ContextPtr i915 = I915_CONTEXT(ctx);
 616
 617    if (i915->state.active & I915_UPLOAD_TEX(unit)) {
 618       I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_FALSE);
 619    }
 620
 621    /* The old texture is no longer bound to this texture unit.
 622     * Mark it as such.
 623     */
 624    if ( i915->intel.CurrentTexObj[unit] != NULL ) {
 625       i915->intel.CurrentTexObj[unit]->base.bound &= ~(1U << 0);
 626       i915->intel.CurrentTexObj[unit] = NULL;
 627    }
 628
 629    return GL_TRUE;
 630 }
 631
 632 static GLboolean i915UpdateTexUnit( GLcontext *ctx, GLuint unit )
 633 {
 634    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 635
 636    if (texUnit->_ReallyEnabled &&
 637        INTEL_CONTEXT(ctx)->intelScreen->textureSize < 2048 * 1024)
 638       return GL_FALSE;
 639
 640    switch (texUnit->_ReallyEnabled) {
 641    case TEXTURE_1D_BIT:
 642    case TEXTURE_2D_BIT:
 643       return (enable_tex_2d( ctx, unit ) &&
 644               enable_tex_common( ctx, unit ));
 645    case TEXTURE_RECT_BIT:
 646       return (enable_tex_rect( ctx, unit ) &&
 647               enable_tex_common( ctx, unit ));
 648    case TEXTURE_CUBE_BIT:
 649       return (enable_tex_cube( ctx, unit ) &&
 650               enable_tex_common( ctx, unit ));
 651    case TEXTURE_3D_BIT:
 652        return (enable_tex_2d( ctx, unit ) &&
 653                enable_tex_common( ctx, unit ) &&
 654                enable_tex_3d( ctx, unit));
 655    case 0:
 656       return disable_tex( ctx, unit );
 657    default:
 658       return GL_FALSE;
 659    }
 660 }
 661
 662
 663 void i915UpdateTextureState( intelContextPtr intel )
 664 {
 665    GLcontext *ctx = &intel->ctx;
 666    GLboolean ok = GL_TRUE;
 667    GLuint i;
 668
 669    for (i = 0 ; i < I915_TEX_UNITS && ok ; i++) {
 670       ok = i915UpdateTexUnit( ctx, i );
 671    }
 672
 673    FALLBACK( intel, I915_FALLBACK_TEXTURE, !ok );
 674 }
 675
 676
 677