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