src/mesa/drivers/dri/i965/brw_wm_surface_state.c

   1 /*
   2  Copyright (C) Intel Corp.  2006.  All Rights Reserved.
   3  Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
   4  develop this 3D driver.
   5
   6  Permission is hereby granted, free of charge, to any person obtaining
   7  a 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, sublicense, 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
  16  portions of the Software.
  17
  18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26  **********************************************************************/
  27  /*
  28   * Authors:
  29   *   Keith Whitwell <keith@tungstengraphics.com>
  30   */
  31
  32
  33 #include "main/mtypes.h"
  34 #include "main/texformat.h"
  35 #include "main/texstore.h"
  36 #include "shader/prog_parameter.h"
  37
  38 #include "intel_mipmap_tree.h"
  39 #include "intel_batchbuffer.h"
  40 #include "intel_tex.h"
  41
  42
  43 #include "brw_context.h"
  44 #include "brw_state.h"
  45 #include "brw_defines.h"
  46
  47
  48 static GLuint translate_tex_target( GLenum target )
  49 {
  50    switch (target) {
  51    case GL_TEXTURE_1D:
  52       return BRW_SURFACE_1D;
  53
  54    case GL_TEXTURE_RECTANGLE_NV:
  55       return BRW_SURFACE_2D;
  56
  57    case GL_TEXTURE_2D:
  58       return BRW_SURFACE_2D;
  59
  60    case GL_TEXTURE_3D:
  61       return BRW_SURFACE_3D;
  62
  63    case GL_TEXTURE_CUBE_MAP:
  64       return BRW_SURFACE_CUBE;
  65
  66    default:
  67       assert(0);
  68       return 0;
  69    }
  70 }
  71
  72
  73 static GLuint translate_tex_format( GLuint mesa_format, GLenum internal_format,
  74                                     GLenum depth_mode )
  75 {
  76    switch( mesa_format ) {
  77    case MESA_FORMAT_L8:
  78       return BRW_SURFACEFORMAT_L8_UNORM;
  79
  80    case MESA_FORMAT_I8:
  81       return BRW_SURFACEFORMAT_I8_UNORM;
  82
  83    case MESA_FORMAT_A8:
  84       return BRW_SURFACEFORMAT_A8_UNORM;
  85
  86    case MESA_FORMAT_AL88:
  87       return BRW_SURFACEFORMAT_L8A8_UNORM;
  88
  89    case MESA_FORMAT_RGB888:
  90       assert(0);                /* not supported for sampling */
  91       return BRW_SURFACEFORMAT_R8G8B8_UNORM;
  92
  93    case MESA_FORMAT_ARGB8888:
  94       if (internal_format == GL_RGB)
  95          return BRW_SURFACEFORMAT_B8G8R8X8_UNORM;
  96       else
  97          return BRW_SURFACEFORMAT_B8G8R8A8_UNORM;
  98
  99    case MESA_FORMAT_RGBA8888_REV:
 100       if (internal_format == GL_RGB)
 101          return BRW_SURFACEFORMAT_R8G8B8X8_UNORM;
 102       else
 103          return BRW_SURFACEFORMAT_R8G8B8A8_UNORM;
 104
 105    case MESA_FORMAT_RGB565:
 106       return BRW_SURFACEFORMAT_B5G6R5_UNORM;
 107
 108    case MESA_FORMAT_ARGB1555:
 109       return BRW_SURFACEFORMAT_B5G5R5A1_UNORM;
 110
 111    case MESA_FORMAT_ARGB4444:
 112       return BRW_SURFACEFORMAT_B4G4R4A4_UNORM;
 113
 114    case MESA_FORMAT_YCBCR_REV:
 115       return BRW_SURFACEFORMAT_YCRCB_NORMAL;
 116
 117    case MESA_FORMAT_YCBCR:
 118       return BRW_SURFACEFORMAT_YCRCB_SWAPUVY;
 119
 120    case MESA_FORMAT_RGB_FXT1:
 121    case MESA_FORMAT_RGBA_FXT1:
 122       return BRW_SURFACEFORMAT_FXT1;
 123
 124    case MESA_FORMAT_Z16:
 125       if (depth_mode == GL_INTENSITY)
 126           return BRW_SURFACEFORMAT_I16_UNORM;
 127       else if (depth_mode == GL_ALPHA)
 128           return BRW_SURFACEFORMAT_A16_UNORM;
 129       else
 130           return BRW_SURFACEFORMAT_L16_UNORM;
 131
 132    case MESA_FORMAT_RGB_DXT1:
 133        return BRW_SURFACEFORMAT_DXT1_RGB;
 134
 135    case MESA_FORMAT_RGBA_DXT1:
 136        return BRW_SURFACEFORMAT_BC1_UNORM;
 137
 138    case MESA_FORMAT_RGBA_DXT3:
 139        return BRW_SURFACEFORMAT_BC2_UNORM;
 140
 141    case MESA_FORMAT_RGBA_DXT5:
 142        return BRW_SURFACEFORMAT_BC3_UNORM;
 143
 144    case MESA_FORMAT_SARGB8:
 145       return BRW_SURFACEFORMAT_B8G8R8A8_UNORM_SRGB;
 146
 147    case MESA_FORMAT_SLA8:
 148       return BRW_SURFACEFORMAT_L8A8_UNORM_SRGB;
 149
 150    case MESA_FORMAT_SL8:
 151       return BRW_SURFACEFORMAT_L8_UNORM_SRGB;
 152
 153    case MESA_FORMAT_SRGB_DXT1:
 154       return BRW_SURFACEFORMAT_BC1_UNORM_SRGB;
 155
 156    case MESA_FORMAT_S8_Z24:
 157       /* XXX: these different surface formats don't seem to
 158        * make any difference for shadow sampler/compares.
 159        */
 160       if (depth_mode == GL_INTENSITY)
 161          return BRW_SURFACEFORMAT_I24X8_UNORM;
 162       else if (depth_mode == GL_ALPHA)
 163          return BRW_SURFACEFORMAT_A24X8_UNORM;
 164       else
 165          return BRW_SURFACEFORMAT_L24X8_UNORM;
 166
 167    case MESA_FORMAT_DUDV8:
 168       return BRW_SURFACEFORMAT_R8G8_SNORM;
 169
 170    case MESA_FORMAT_SIGNED_RGBA8888_REV:
 171       return BRW_SURFACEFORMAT_R8G8B8A8_SNORM;
 172
 173    default:
 174       assert(0);
 175       return 0;
 176    }
 177 }
 178
 179 struct brw_wm_surface_key {
 180    GLenum target, depthmode;
 181    dri_bo *bo;
 182    GLint format, internal_format;
 183    GLint first_level, last_level;
 184    GLint width, height, depth;
 185    GLint pitch, cpp;
 186    uint32_t tiling;
 187    GLuint offset;
 188 };
 189
 190 static void
 191 brw_set_surface_tiling(struct brw_surface_state *surf, uint32_t tiling)
 192 {
 193    switch (tiling) {
 194    case I915_TILING_NONE:
 195       surf->ss3.tiled_surface = 0;
 196       surf->ss3.tile_walk = 0;
 197       break;
 198    case I915_TILING_X:
 199       surf->ss3.tiled_surface = 1;
 200       surf->ss3.tile_walk = BRW_TILEWALK_XMAJOR;
 201       break;
 202    case I915_TILING_Y:
 203       surf->ss3.tiled_surface = 1;
 204       surf->ss3.tile_walk = BRW_TILEWALK_YMAJOR;
 205       break;
 206    }
 207 }
 208
 209 static dri_bo *
 210 brw_create_texture_surface( struct brw_context *brw,
 211                             struct brw_wm_surface_key *key )
 212 {
 213    struct brw_surface_state surf;
 214    dri_bo *bo;
 215
 216    memset(&surf, 0, sizeof(surf));
 217
 218    surf.ss0.mipmap_layout_mode = BRW_SURFACE_MIPMAPLAYOUT_BELOW;
 219    surf.ss0.surface_type = translate_tex_target(key->target);
 220    if (key->bo) {
 221       surf.ss0.surface_format = translate_tex_format(key->format,
 222                                                      key->internal_format,
 223                                                      key->depthmode);
 224    }
 225    else {
 226       switch (key->depth) {
 227       case 32:
 228          surf.ss0.surface_format = BRW_SURFACEFORMAT_B8G8R8A8_UNORM;
 229          break;
 230       default:
 231       case 24:
 232          surf.ss0.surface_format = BRW_SURFACEFORMAT_B8G8R8X8_UNORM;
 233          break;
 234       case 16:
 235          surf.ss0.surface_format = BRW_SURFACEFORMAT_B5G6R5_UNORM;
 236          break;
 237       }
 238    }
 239
 240    /* This is ok for all textures with channel width 8bit or less:
 241     */
 242 /*    surf.ss0.data_return_format = BRW_SURFACERETURNFORMAT_S1; */
 243    if (key->bo)
 244       surf.ss1.base_addr = key->bo->offset; /* reloc */
 245    else
 246       surf.ss1.base_addr = key->offset;
 247
 248    surf.ss2.mip_count = key->last_level - key->first_level;
 249    surf.ss2.width = key->width - 1;
 250    surf.ss2.height = key->height - 1;
 251    brw_set_surface_tiling(&surf, key->tiling);
 252    surf.ss3.pitch = (key->pitch * key->cpp) - 1;
 253    surf.ss3.depth = key->depth - 1;
 254
 255    surf.ss4.min_lod = 0;
 256
 257    if (key->target == GL_TEXTURE_CUBE_MAP) {
 258       surf.ss0.cube_pos_x = 1;
 259       surf.ss0.cube_pos_y = 1;
 260       surf.ss0.cube_pos_z = 1;
 261       surf.ss0.cube_neg_x = 1;
 262       surf.ss0.cube_neg_y = 1;
 263       surf.ss0.cube_neg_z = 1;
 264    }
 265
 266    bo = brw_upload_cache(&brw->cache, BRW_SS_SURFACE,
 267                          key, sizeof(*key),
 268                          &key->bo, key->bo ? 1 : 0,
 269                          &surf, sizeof(surf),
 270                          NULL, NULL);
 271
 272    if (key->bo) {
 273       /* Emit relocation to surface contents */
 274       dri_bo_emit_reloc(bo,
 275                         I915_GEM_DOMAIN_SAMPLER, 0,
 276                         0,
 277                         offsetof(struct brw_surface_state, ss1),
 278                         key->bo);
 279    }
 280    return bo;
 281 }
 282
 283 static void
 284 brw_update_texture_surface( GLcontext *ctx, GLuint unit )
 285 {
 286    struct brw_context *brw = brw_context(ctx);
 287    struct gl_texture_object *tObj = ctx->Texture.Unit[unit]._Current;
 288    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 289    struct gl_texture_image *firstImage = tObj->Image[0][intelObj->firstLevel];
 290    struct brw_wm_surface_key key;
 291    const GLuint j = MAX_DRAW_BUFFERS + unit;
 292
 293    memset(&key, 0, sizeof(key));
 294
 295    if (intelObj->imageOverride) {
 296       key.pitch = intelObj->pitchOverride / intelObj->mt->cpp;
 297       key.depth = intelObj->depthOverride;
 298       key.bo = NULL;
 299       key.offset = intelObj->textureOffset;
 300    } else {
 301       key.format = firstImage->TexFormat->MesaFormat;
 302       key.internal_format = firstImage->InternalFormat;
 303       key.pitch = intelObj->mt->pitch;
 304       key.depth = firstImage->Depth;
 305       key.bo = intelObj->mt->region->buffer;
 306       key.offset = 0;
 307    }
 308
 309    key.target = tObj->Target;
 310    key.depthmode = tObj->DepthMode;
 311    key.first_level = intelObj->firstLevel;
 312    key.last_level = intelObj->lastLevel;
 313    key.width = firstImage->Width;
 314    key.height = firstImage->Height;
 315    key.cpp = intelObj->mt->cpp;
 316    key.tiling = intelObj->mt->region->tiling;
 317
 318    dri_bo_unreference(brw->wm.surf_bo[j]);
 319    brw->wm.surf_bo[j] = brw_search_cache(&brw->cache, BRW_SS_SURFACE,
 320                                          &key, sizeof(key),
 321                                          &key.bo, key.bo ? 1 : 0,
 322                                          NULL);
 323    if (brw->wm.surf_bo[j] == NULL) {
 324       brw->wm.surf_bo[j] = brw_create_texture_surface(brw, &key);
 325    }
 326 }
 327
 328
 329
 330 /**
 331  * Create the constant buffer surface.  Fragment shader constanst will be
 332  * read from this buffer with Data Port Read instructions/messages.
 333  */
 334 static dri_bo *
 335 brw_create_constant_surface( struct brw_context *brw,
 336                              struct brw_wm_surface_key *key )
 337 {
 338    const GLint w = key->width - 1;
 339    struct brw_surface_state surf;
 340    dri_bo *bo;
 341
 342    memset(&surf, 0, sizeof(surf));
 343
 344    surf.ss0.mipmap_layout_mode = BRW_SURFACE_MIPMAPLAYOUT_BELOW;
 345    surf.ss0.surface_type = BRW_SURFACE_BUFFER;
 346    surf.ss0.surface_format = BRW_SURFACEFORMAT_R32G32B32A32_FLOAT;
 347
 348    /* This is ok for all textures with channel width 8bit or less:
 349     */
 350    assert(key->bo);
 351    if (key->bo)
 352       surf.ss1.base_addr = key->bo->offset; /* reloc */
 353    else
 354       surf.ss1.base_addr = key->offset;
 355
 356    surf.ss2.width = w & 0x7f;            /* bits 6:0 of size or width */
 357    surf.ss2.height = (w >> 7) & 0x1fff;  /* bits 19:7 of size or width */
 358    surf.ss3.depth = (w >> 20) & 0x7f;    /* bits 26:20 of size or width */
 359    surf.ss3.pitch = (key->pitch * key->cpp) - 1;
 360    brw_set_surface_tiling(&surf, key->tiling);
 361
 362    bo = brw_upload_cache(&brw->cache, BRW_SS_SURFACE,
 363                          key, sizeof(*key),
 364                          &key->bo, key->bo ? 1 : 0,
 365                          &surf, sizeof(surf),
 366                          NULL, NULL);
 367
 368    if (key->bo) {
 369       /* Emit relocation to surface contents */
 370       dri_bo_emit_reloc(bo,
 371                         I915_GEM_DOMAIN_SAMPLER, 0,
 372                         0,
 373                         offsetof(struct brw_surface_state, ss1),
 374                         key->bo);
 375    }
 376
 377    return bo;
 378 }
 379
 380
 381 /**
 382  * Update the constant buffer surface.
 383  */
 384 static void
 385 brw_update_constant_surface( GLcontext *ctx,
 386                              const struct brw_fragment_program *fp )
 387 {
 388    struct brw_context *brw = brw_context(ctx);
 389    struct brw_wm_surface_key key;
 390    const GLuint j = BRW_WM_MAX_SURF - 1;
 391    const GLuint numParams = fp->program.Base.Parameters->NumParameters;
 392
 393    memset(&key, 0, sizeof(key));
 394
 395    key.format = MESA_FORMAT_RGBA_FLOAT32;
 396    key.internal_format = GL_RGBA;
 397    key.bo = fp->const_buffer;
 398
 399    key.depthmode = GL_NONE;
 400    key.pitch = numParams;
 401    key.width = numParams;
 402    key.height = 1;
 403    key.depth = 1;
 404    key.cpp = 16;
 405
 406    /*
 407    printf("%s:\n", __FUNCTION__);
 408    printf("  width %d  height %d  depth %d  cpp %d  pitch %d\n",
 409           key.width, key.height, key.depth, key.cpp, key.pitch);
 410    */
 411
 412    dri_bo_unreference(brw->wm.surf_bo[j]);
 413    brw->wm.surf_bo[j] = brw_search_cache(&brw->cache, BRW_SS_SURFACE,
 414                                          &key, sizeof(key),
 415                                          &key.bo, key.bo ? 1 : 0,
 416                                          NULL);
 417    if (brw->wm.surf_bo[j] == NULL) {
 418       brw->wm.surf_bo[j] = brw_create_constant_surface(brw, &key);
 419    }
 420 }
 421
 422
 423 /**
 424  * Sets up a surface state structure to point at the given region.
 425  * While it is only used for the front/back buffer currently, it should be
 426  * usable for further buffers when doing ARB_draw_buffer support.
 427  */
 428 static void
 429 brw_update_region_surface(struct brw_context *brw, struct intel_region *region,
 430                           unsigned int unit, GLboolean cached)
 431 {
 432    GLcontext *ctx = &brw->intel.ctx;
 433    dri_bo *region_bo = NULL;
 434    struct {
 435       unsigned int surface_type;
 436       unsigned int surface_format;
 437       unsigned int width, height, cpp;
 438       GLubyte color_mask[4];
 439       GLboolean color_blend;
 440       uint32_t tiling;
 441    } key;
 442
 443    memset(&key, 0, sizeof(key));
 444
 445    if (region != NULL) {
 446       region_bo = region->buffer;
 447
 448       key.surface_type = BRW_SURFACE_2D;
 449       if (region->cpp == 4)
 450          key.surface_format = BRW_SURFACEFORMAT_B8G8R8A8_UNORM;
 451       else
 452          key.surface_format = BRW_SURFACEFORMAT_B5G6R5_UNORM;
 453       key.tiling = region->tiling;
 454       key.width = region->pitch; /* XXX: not really! */
 455       key.height = region->height;
 456       key.cpp = region->cpp;
 457    } else {
 458       key.surface_type = BRW_SURFACE_NULL;
 459       key.surface_format = BRW_SURFACEFORMAT_B8G8R8A8_UNORM;
 460       key.tiling = 0;
 461       key.width = 1;
 462       key.height = 1;
 463       key.cpp = 4;
 464    }
 465    memcpy(key.color_mask, ctx->Color.ColorMask,
 466           sizeof(key.color_mask));
 467    key.color_blend = (!ctx->Color._LogicOpEnabled &&
 468                       ctx->Color.BlendEnabled);
 469
 470    dri_bo_unreference(brw->wm.surf_bo[unit]);
 471    brw->wm.surf_bo[unit] = NULL;
 472    if (cached)
 473        brw->wm.surf_bo[unit] = brw_search_cache(&brw->cache, BRW_SS_SURFACE,
 474                &key, sizeof(key),
 475                &region_bo, 1,
 476                NULL);
 477
 478    if (brw->wm.surf_bo[unit] == NULL) {
 479       struct brw_surface_state surf;
 480
 481       memset(&surf, 0, sizeof(surf));
 482
 483       surf.ss0.surface_format = key.surface_format;
 484       surf.ss0.surface_type = key.surface_type;
 485       if (region_bo != NULL)
 486          surf.ss1.base_addr = region_bo->offset; /* reloc */
 487
 488       surf.ss2.width = key.width - 1;
 489       surf.ss2.height = key.height - 1;
 490       brw_set_surface_tiling(&surf, key.tiling);
 491       surf.ss3.pitch = (key.width * key.cpp) - 1;
 492
 493       /* _NEW_COLOR */
 494       surf.ss0.color_blend = key.color_blend;
 495       surf.ss0.writedisable_red =   !key.color_mask[0];
 496       surf.ss0.writedisable_green = !key.color_mask[1];
 497       surf.ss0.writedisable_blue =  !key.color_mask[2];
 498       surf.ss0.writedisable_alpha = !key.color_mask[3];
 499
 500       /* Key size will never match key size for textures, so we're safe. */
 501       brw->wm.surf_bo[unit] = brw_upload_cache(&brw->cache, BRW_SS_SURFACE,
 502                                               &key, sizeof(key),
 503                                                &region_bo, 1,
 504                                                &surf, sizeof(surf),
 505                                                NULL, NULL);
 506       if (region_bo != NULL) {
 507          /* We might sample from it, and we might render to it, so flag
 508           * them both.  We might be able to figure out from other state
 509           * a more restrictive relocation to emit.
 510           */
 511          dri_bo_emit_reloc(brw->wm.surf_bo[unit],
 512                            I915_GEM_DOMAIN_RENDER,
 513                            I915_GEM_DOMAIN_RENDER,
 514                            0,
 515                            offsetof(struct brw_surface_state, ss1),
 516                            region_bo);
 517       }
 518    }
 519 }
 520
 521
 522 /**
 523  * Constructs the binding table for the WM surface state, which maps unit
 524  * numbers to surface state objects.
 525  */
 526 static dri_bo *
 527 brw_wm_get_binding_table(struct brw_context *brw)
 528 {
 529    dri_bo *bind_bo;
 530
 531    bind_bo = brw_search_cache(&brw->cache, BRW_SS_SURF_BIND,
 532                               NULL, 0,
 533                               brw->wm.surf_bo, brw->wm.nr_surfaces,
 534                               NULL);
 535
 536    if (bind_bo == NULL) {
 537       GLuint data_size = brw->wm.nr_surfaces * sizeof(GLuint);
 538       uint32_t *data = malloc(data_size);
 539       int i;
 540
 541       for (i = 0; i < brw->wm.nr_surfaces; i++)
 542          if (brw->wm.surf_bo[i])
 543             data[i] = brw->wm.surf_bo[i]->offset;
 544          else
 545             data[i] = 0;
 546
 547       bind_bo = brw_upload_cache( &brw->cache, BRW_SS_SURF_BIND,
 548                                   NULL, 0,
 549                                   brw->wm.surf_bo, brw->wm.nr_surfaces,
 550                                   data, data_size,
 551                                   NULL, NULL);
 552
 553       /* Emit binding table relocations to surface state */
 554       for (i = 0; i < BRW_WM_MAX_SURF; i++) {
 555          if (brw->wm.surf_bo[i] != NULL) {
 556             dri_bo_emit_reloc(bind_bo,
 557                               I915_GEM_DOMAIN_INSTRUCTION, 0,
 558                               0,
 559                               i * sizeof(GLuint),
 560                               brw->wm.surf_bo[i]);
 561          }
 562       }
 563
 564       free(data);
 565    }
 566
 567    return bind_bo;
 568 }
 569
 570 static void prepare_wm_surfaces(struct brw_context *brw )
 571 {
 572    GLcontext *ctx = &brw->intel.ctx;
 573    struct intel_context *intel = &brw->intel;
 574    GLuint i;
 575    int old_nr_surfaces;
 576
 577    /* Update surfaces for drawing buffers */
 578    if (brw->state.nr_color_regions > 1) {
 579       for (i = 0; i < brw->state.nr_color_regions; i++) {
 580          brw_update_region_surface(brw, brw->state.color_regions[i], i,
 581                                    GL_FALSE);
 582       }
 583    } else {
 584       brw_update_region_surface(brw, brw->state.color_regions[0], 0, GL_TRUE);
 585    }
 586
 587    old_nr_surfaces = brw->wm.nr_surfaces;
 588    brw->wm.nr_surfaces = MAX_DRAW_BUFFERS;
 589
 590    /* Update surfaces for textures */
 591    for (i = 0; i < BRW_MAX_TEX_UNIT; i++) {
 592       const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[i];
 593       const GLuint j = MAX_DRAW_BUFFERS + i;
 594
 595       /* _NEW_TEXTURE, BRW_NEW_TEXDATA */
 596       if (texUnit->_ReallyEnabled) {
 597          if (texUnit->_Current == intel->frame_buffer_texobj) {
 598             /* render to texture */
 599             dri_bo_unreference(brw->wm.surf_bo[j]);
 600             brw->wm.surf_bo[j] = brw->wm.surf_bo[0];
 601             dri_bo_reference(brw->wm.surf_bo[j]);
 602             brw->wm.nr_surfaces = j + 1;
 603          } else {
 604             /* regular texture */
 605             brw_update_texture_surface(ctx, i);
 606             brw->wm.nr_surfaces = j + 1;
 607          }
 608       } else {
 609          dri_bo_unreference(brw->wm.surf_bo[j]);
 610          brw->wm.surf_bo[j] = NULL;
 611       }
 612    }
 613
 614    /* Update surface for fragment shader constant buffer */
 615    {
 616       const GLuint j = BRW_WM_MAX_SURF - 1;
 617       const struct brw_fragment_program *fp =
 618          brw_fragment_program_const(brw->fragment_program);
 619
 620       brw_update_constant_surface(ctx, fp);
 621       brw->wm.nr_surfaces = j + 1;
 622    }
 623
 624
 625    dri_bo_unreference(brw->wm.bind_bo);
 626    brw->wm.bind_bo = brw_wm_get_binding_table(brw);
 627
 628    if (brw->wm.nr_surfaces != old_nr_surfaces)
 629       brw->state.dirty.brw |= BRW_NEW_NR_SURFACES;
 630 }
 631
 632
 633 const struct brw_tracked_state brw_wm_surfaces = {
 634    .dirty = {
 635       .mesa = _NEW_COLOR | _NEW_TEXTURE | _NEW_BUFFERS,
 636       .brw = BRW_NEW_CONTEXT,
 637       .cache = 0
 638    },
 639    .prepare = prepare_wm_surfaces,
 640 };
 641
 642
 643