src/mesa/drivers/dri/i965/gen8_surface_state.c

   1 /*
   2  * Copyright © 2012 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #include "main/blend.h"
  25 #include "main/mtypes.h"
  26 #include "main/samplerobj.h"
  27 #include "main/texformat.h"
  28 #include "main/teximage.h"
  29 #include "program/prog_parameter.h"
  30 #include "program/prog_instruction.h"
  31
  32 #include "intel_mipmap_tree.h"
  33 #include "intel_batchbuffer.h"
  34 #include "intel_tex.h"
  35 #include "intel_fbo.h"
  36 #include "intel_buffer_objects.h"
  37 #include "intel_image.h"
  38
  39 #include "brw_context.h"
  40 #include "brw_state.h"
  41 #include "brw_defines.h"
  42 #include "brw_wm.h"
  43 #include "isl/isl.h"
  44
  45 /**
  46  * Convert an swizzle enumeration (i.e. SWIZZLE_X) to one of the Gen7.5+
  47  * "Shader Channel Select" enumerations (i.e. HSW_SCS_RED).  The mappings are
  48  *
  49  * SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_W, SWIZZLE_ZERO, SWIZZLE_ONE
  50  *         0          1          2          3             4            5
  51  *         4          5          6          7             0            1
  52  *   SCS_RED, SCS_GREEN,  SCS_BLUE, SCS_ALPHA,     SCS_ZERO,     SCS_ONE
  53  *
  54  * which is simply adding 4 then modding by 8 (or anding with 7).
  55  */
  56 static unsigned
  57 swizzle_to_scs(unsigned swizzle)
  58 {
  59    return (swizzle + 4) & 7;
  60 }
  61
  62 static uint32_t
  63 surface_tiling_resource_mode(uint32_t tr_mode)
  64 {
  65    switch (tr_mode) {
  66    case INTEL_MIPTREE_TRMODE_YF:
  67       return GEN9_SURFACE_TRMODE_TILEYF;
  68    case INTEL_MIPTREE_TRMODE_YS:
  69       return GEN9_SURFACE_TRMODE_TILEYS;
  70    default:
  71       return GEN9_SURFACE_TRMODE_NONE;
  72    }
  73 }
  74
  75 uint32_t
  76 gen8_surface_tiling_mode(uint32_t tiling)
  77 {
  78    switch (tiling) {
  79    case I915_TILING_X:
  80       return GEN8_SURFACE_TILING_X;
  81    case I915_TILING_Y:
  82       return GEN8_SURFACE_TILING_Y;
  83    default:
  84       return GEN8_SURFACE_TILING_NONE;
  85    }
  86 }
  87
  88 unsigned
  89 gen8_vertical_alignment(const struct brw_context *brw,
  90                         const struct intel_mipmap_tree *mt,
  91                         uint32_t surf_type)
  92 {
  93    /* On Gen9+ vertical alignment is ignored for 1D surfaces and when
  94     * tr_mode is not TRMODE_NONE. Set to an arbitrary non-reserved value.
  95     */
  96    if (brw->gen > 8 &&
  97        (mt->tr_mode != INTEL_MIPTREE_TRMODE_NONE ||
  98         surf_type == BRW_SURFACE_1D))
  99       return GEN8_SURFACE_VALIGN_4;
 100
 101    switch (mt->valign) {
 102    case 4:
 103       return GEN8_SURFACE_VALIGN_4;
 104    case 8:
 105       return GEN8_SURFACE_VALIGN_8;
 106    case 16:
 107       return GEN8_SURFACE_VALIGN_16;
 108    default:
 109       unreachable("Unsupported vertical surface alignment.");
 110    }
 111 }
 112
 113 unsigned
 114 gen8_horizontal_alignment(const struct brw_context *brw,
 115                           const struct intel_mipmap_tree *mt,
 116                           uint32_t surf_type)
 117 {
 118    /* On Gen9+ horizontal alignment is ignored when tr_mode is not
 119     * TRMODE_NONE. Set to an arbitrary non-reserved value.
 120     */
 121    if (brw->gen > 8 &&
 122        (mt->tr_mode != INTEL_MIPTREE_TRMODE_NONE ||
 123         gen9_use_linear_1d_layout(brw, mt)))
 124       return GEN8_SURFACE_HALIGN_4;
 125
 126    switch (mt->halign) {
 127    case 4:
 128       return GEN8_SURFACE_HALIGN_4;
 129    case 8:
 130       return GEN8_SURFACE_HALIGN_8;
 131    case 16:
 132       return GEN8_SURFACE_HALIGN_16;
 133    default:
 134       unreachable("Unsupported horizontal surface alignment.");
 135    }
 136 }
 137
 138 uint32_t *
 139 gen8_allocate_surface_state(struct brw_context *brw,
 140                             uint32_t *out_offset, int index)
 141 {
 142    int dwords = brw->gen >= 9 ? 16 : 13;
 143    uint32_t *surf = __brw_state_batch(brw, AUB_TRACE_SURFACE_STATE,
 144                                       dwords * 4, 64, index, out_offset);
 145    memset(surf, 0, dwords * 4);
 146    return surf;
 147 }
 148
 149 static void
 150 gen8_emit_buffer_surface_state(struct brw_context *brw,
 151                                uint32_t *out_offset,
 152                                drm_intel_bo *bo,
 153                                unsigned buffer_offset,
 154                                unsigned surface_format,
 155                                unsigned buffer_size,
 156                                unsigned pitch,
 157                                bool rw)
 158 {
 159    const unsigned mocs = brw->gen >= 9 ? SKL_MOCS_WB : BDW_MOCS_WB;
 160    uint32_t *surf = gen8_allocate_surface_state(brw, out_offset, -1);
 161
 162    surf[0] = BRW_SURFACE_BUFFER << BRW_SURFACE_TYPE_SHIFT |
 163              surface_format << BRW_SURFACE_FORMAT_SHIFT |
 164              BRW_SURFACE_RC_READ_WRITE;
 165    surf[1] = SET_FIELD(mocs, GEN8_SURFACE_MOCS);
 166
 167    surf[2] = SET_FIELD((buffer_size - 1) & 0x7f, GEN7_SURFACE_WIDTH) |
 168              SET_FIELD(((buffer_size - 1) >> 7) & 0x3fff, GEN7_SURFACE_HEIGHT);
 169    if (surface_format == BRW_SURFACEFORMAT_RAW)
 170       surf[3] = SET_FIELD(((buffer_size - 1) >> 21) & 0x3ff, BRW_SURFACE_DEPTH);
 171    else
 172       surf[3] = SET_FIELD(((buffer_size - 1) >> 21) & 0x3f, BRW_SURFACE_DEPTH);
 173    surf[3] |= (pitch - 1);
 174    surf[7] = SET_FIELD(HSW_SCS_RED,   GEN7_SURFACE_SCS_R) |
 175              SET_FIELD(HSW_SCS_GREEN, GEN7_SURFACE_SCS_G) |
 176              SET_FIELD(HSW_SCS_BLUE,  GEN7_SURFACE_SCS_B) |
 177              SET_FIELD(HSW_SCS_ALPHA, GEN7_SURFACE_SCS_A);
 178    /* reloc */
 179    *((uint64_t *) &surf[8]) = (bo ? bo->offset64 : 0) + buffer_offset;
 180
 181    /* Emit relocation to surface contents. */
 182    if (bo) {
 183       drm_intel_bo_emit_reloc(brw->batch.bo, *out_offset + 8 * 4,
 184                               bo, buffer_offset, I915_GEM_DOMAIN_SAMPLER,
 185                               rw ? I915_GEM_DOMAIN_SAMPLER : 0);
 186    }
 187 }
 188
 189 void
 190 gen8_emit_fast_clear_color(const struct brw_context *brw,
 191                            const struct intel_mipmap_tree *mt,
 192                            uint32_t *surf)
 193 {
 194    if (brw->gen >= 9) {
 195       surf[12] = mt->gen9_fast_clear_color.ui[0];
 196       surf[13] = mt->gen9_fast_clear_color.ui[1];
 197       surf[14] = mt->gen9_fast_clear_color.ui[2];
 198       surf[15] = mt->gen9_fast_clear_color.ui[3];
 199    } else
 200       surf[7] |= mt->fast_clear_color_value;
 201 }
 202
 203 uint32_t
 204 gen8_get_aux_mode(const struct brw_context *brw,
 205                   const struct intel_mipmap_tree *mt)
 206 {
 207    if (mt->mcs_mt == NULL)
 208       return GEN8_SURFACE_AUX_MODE_NONE;
 209
 210    /*
 211     * From the BDW PRM, Volume 2d, page 260 (RENDER_SURFACE_STATE):
 212     * "When MCS is enabled for non-MSRT, HALIGN_16 must be used"
 213     *
 214     * From the hardware spec for GEN9:
 215     * "When Auxiliary Surface Mode is set to AUX_CCS_D or AUX_CCS_E, HALIGN
 216     *  16 must be used."
 217     */
 218    if (brw->gen >= 9 || mt->num_samples == 1)
 219       assert(mt->halign == 16);
 220
 221    if (intel_miptree_is_lossless_compressed(brw, mt))
 222       return GEN9_SURFACE_AUX_MODE_CCS_E;
 223
 224    return GEN8_SURFACE_AUX_MODE_MCS;
 225 }
 226
 227 static void
 228 gen8_emit_texture_surface_state(struct brw_context *brw,
 229                                 struct intel_mipmap_tree *mt,
 230                                 GLenum target,
 231                                 unsigned min_layer, unsigned max_layer,
 232                                 unsigned min_level, unsigned max_level,
 233                                 unsigned format,
 234                                 unsigned swizzle,
 235                                 uint32_t *surf_offset, int surf_index,
 236                                 bool rw, bool for_gather)
 237 {
 238    const unsigned depth = max_layer - min_layer;
 239    struct intel_mipmap_tree *aux_mt = mt->mcs_mt;
 240    uint32_t mocs_wb = brw->gen >= 9 ? SKL_MOCS_WB : BDW_MOCS_WB;
 241    unsigned tiling_mode, pitch;
 242    const unsigned tr_mode = surface_tiling_resource_mode(mt->tr_mode);
 243    const uint32_t surf_type = translate_tex_target(target);
 244    uint32_t aux_mode = gen8_get_aux_mode(brw, mt);
 245
 246    if (mt->format == MESA_FORMAT_S_UINT8) {
 247       tiling_mode = GEN8_SURFACE_TILING_W;
 248       pitch = 2 * mt->pitch;
 249    } else {
 250       tiling_mode = gen8_surface_tiling_mode(mt->tiling);
 251       pitch = mt->pitch;
 252    }
 253
 254    /* Prior to Gen9, MCS is not uploaded for single-sampled surfaces because
 255     * the color buffer should always have been resolved before it is used as
 256     * a texture so there is no need for it. On Gen9 it will be uploaded when
 257     * the surface is losslessly compressed (CCS_E).
 258     * However, sampling engine is not capable of re-interpreting the
 259     * underlying color buffer in non-compressible formats when the surface
 260     * is configured as compressed. Therefore state upload has made sure the
 261     * buffer is in resolved state allowing the surface to be configured as
 262     * non-compressed.
 263     */
 264    if (mt->num_samples <= 1 &&
 265        (aux_mode != GEN9_SURFACE_AUX_MODE_CCS_E ||
 266         !isl_format_supports_lossless_compression(
 267             brw->intelScreen->devinfo, format))) {
 268       assert(!mt->mcs_mt ||
 269              mt->fast_clear_state == INTEL_FAST_CLEAR_STATE_RESOLVED);
 270       aux_mt = NULL;
 271       aux_mode = GEN8_SURFACE_AUX_MODE_NONE;
 272    }
 273
 274    uint32_t *surf = gen8_allocate_surface_state(brw, surf_offset, surf_index);
 275
 276    surf[0] = SET_FIELD(surf_type, BRW_SURFACE_TYPE) |
 277              format << BRW_SURFACE_FORMAT_SHIFT |
 278              gen8_vertical_alignment(brw, mt, surf_type) |
 279              gen8_horizontal_alignment(brw, mt, surf_type) |
 280              tiling_mode;
 281
 282    if (surf_type == BRW_SURFACE_CUBE) {
 283       surf[0] |= BRW_SURFACE_CUBEFACE_ENABLES;
 284    }
 285
 286    /* From the CHV PRM, Volume 2d, page 321 (RENDER_SURFACE_STATE dword 0
 287     * bit 9 "Sampler L2 Bypass Mode Disable" Programming Notes):
 288     *
 289     *    This bit must be set for the following surface types: BC2_UNORM
 290     *    BC3_UNORM BC5_UNORM BC5_SNORM BC7_UNORM
 291     */
 292    if ((brw->gen >= 9 || brw->is_cherryview) &&
 293        (format == BRW_SURFACEFORMAT_BC2_UNORM ||
 294         format == BRW_SURFACEFORMAT_BC3_UNORM ||
 295         format == BRW_SURFACEFORMAT_BC5_UNORM ||
 296         format == BRW_SURFACEFORMAT_BC5_SNORM ||
 297         format == BRW_SURFACEFORMAT_BC7_UNORM))
 298       surf[0] |= GEN8_SURFACE_SAMPLER_L2_BYPASS_DISABLE;
 299
 300    if (mt->target != GL_TEXTURE_3D)
 301       surf[0] |= GEN8_SURFACE_IS_ARRAY;
 302
 303    surf[1] = SET_FIELD(mocs_wb, GEN8_SURFACE_MOCS) | mt->qpitch >> 2;
 304
 305    surf[2] = SET_FIELD(mt->logical_width0 - 1, GEN7_SURFACE_WIDTH) |
 306              SET_FIELD(mt->logical_height0 - 1, GEN7_SURFACE_HEIGHT);
 307
 308    surf[3] = SET_FIELD(depth - 1, BRW_SURFACE_DEPTH) | (pitch - 1);
 309
 310    surf[4] = gen7_surface_msaa_bits(mt->num_samples, mt->msaa_layout) |
 311              SET_FIELD(min_layer, GEN7_SURFACE_MIN_ARRAY_ELEMENT) |
 312              SET_FIELD(depth - 1, GEN7_SURFACE_RENDER_TARGET_VIEW_EXTENT);
 313
 314    surf[5] = SET_FIELD(min_level - mt->first_level, GEN7_SURFACE_MIN_LOD) |
 315              (max_level - min_level - 1); /* mip count */
 316
 317    if (brw->gen >= 9) {
 318       surf[5] |= SET_FIELD(tr_mode, GEN9_SURFACE_TRMODE);
 319       /* Disable Mip Tail by setting a large value. */
 320       surf[5] |= SET_FIELD(15, GEN9_SURFACE_MIP_TAIL_START_LOD);
 321    }
 322
 323    if (aux_mt) {
 324       uint32_t tile_w, tile_h;
 325       assert(aux_mt->tiling == I915_TILING_Y);
 326       intel_get_tile_dims(aux_mt->tiling, aux_mt->tr_mode,
 327                           aux_mt->cpp, &tile_w, &tile_h);
 328       surf[6] = SET_FIELD(aux_mt->qpitch / 4, GEN8_SURFACE_AUX_QPITCH) |
 329                 SET_FIELD((aux_mt->pitch / tile_w) - 1,
 330                           GEN8_SURFACE_AUX_PITCH) |
 331                 aux_mode;
 332    }
 333
 334    gen8_emit_fast_clear_color(brw, mt, surf);
 335    surf[7] |=
 336       SET_FIELD(swizzle_to_scs(GET_SWZ(swizzle, 0)), GEN7_SURFACE_SCS_R) |
 337       SET_FIELD(swizzle_to_scs(GET_SWZ(swizzle, 1)), GEN7_SURFACE_SCS_G) |
 338       SET_FIELD(swizzle_to_scs(GET_SWZ(swizzle, 2)), GEN7_SURFACE_SCS_B) |
 339       SET_FIELD(swizzle_to_scs(GET_SWZ(swizzle, 3)), GEN7_SURFACE_SCS_A);
 340
 341    *((uint64_t *) &surf[8]) = mt->bo->offset64 + mt->offset; /* reloc */
 342
 343    if (aux_mt) {
 344       *((uint64_t *) &surf[10]) = aux_mt->bo->offset64;
 345       drm_intel_bo_emit_reloc(brw->batch.bo, *surf_offset + 10 * 4,
 346                               aux_mt->bo, 0,
 347                               I915_GEM_DOMAIN_SAMPLER,
 348                               (rw ? I915_GEM_DOMAIN_SAMPLER : 0));
 349    }
 350
 351    /* Emit relocation to surface contents */
 352    drm_intel_bo_emit_reloc(brw->batch.bo,
 353                            *surf_offset + 8 * 4,
 354                            mt->bo,
 355                            mt->offset,
 356                            I915_GEM_DOMAIN_SAMPLER,
 357                            (rw ? I915_GEM_DOMAIN_SAMPLER : 0));
 358 }
 359
 360 static void
 361 gen8_update_texture_surface(struct gl_context *ctx,
 362                             unsigned unit,
 363                             uint32_t *surf_offset,
 364                             bool for_gather,
 365                             uint32_t plane)
 366 {
 367    struct brw_context *brw = brw_context(ctx);
 368    struct gl_texture_object *obj = ctx->Texture.Unit[unit]._Current;
 369
 370    if (obj->Target == GL_TEXTURE_BUFFER) {
 371       brw_update_buffer_texture_surface(ctx, unit, surf_offset);
 372
 373    } else {
 374       struct gl_texture_image *firstImage = obj->Image[0][obj->BaseLevel];
 375       struct intel_texture_object *intel_obj = intel_texture_object(obj);
 376       struct intel_mipmap_tree *mt = intel_obj->mt;
 377
 378       if (plane > 0) {
 379          if (mt->plane[plane - 1] == NULL)
 380             return;
 381          mt = mt->plane[plane - 1];
 382       }
 383
 384       struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
 385       /* If this is a view with restricted NumLayers, then our effective depth
 386        * is not just the miptree depth.
 387        */
 388       const unsigned depth = (obj->Immutable && obj->Target != GL_TEXTURE_3D ?
 389                               obj->NumLayers : mt->logical_depth0);
 390
 391       /* Handling GL_ALPHA as a surface format override breaks 1.30+ style
 392        * texturing functions that return a float, as our code generation always
 393        * selects the .x channel (which would always be 0).
 394        */
 395       const bool alpha_depth = obj->DepthMode == GL_ALPHA &&
 396          (firstImage->_BaseFormat == GL_DEPTH_COMPONENT ||
 397           firstImage->_BaseFormat == GL_DEPTH_STENCIL);
 398       const unsigned swizzle = (unlikely(alpha_depth) ? SWIZZLE_XYZW :
 399                                 brw_get_texture_swizzle(&brw->ctx, obj));
 400
 401       mesa_format mesa_fmt = plane == 0 ? intel_obj->_Format : mt->format;
 402       unsigned format = translate_tex_format(brw, mesa_fmt,
 403                                              sampler->sRGBDecode);
 404
 405       if (obj->StencilSampling && firstImage->_BaseFormat == GL_DEPTH_STENCIL) {
 406          mt = mt->stencil_mt;
 407          format = BRW_SURFACEFORMAT_R8_UINT;
 408       }
 409
 410       const int surf_index = surf_offset - &brw->wm.base.surf_offset[0];
 411
 412       gen8_emit_texture_surface_state(brw, mt, obj->Target,
 413                                       obj->MinLayer, obj->MinLayer + depth,
 414                                       obj->MinLevel + obj->BaseLevel,
 415                                       obj->MinLevel + intel_obj->_MaxLevel + 1,
 416                                       format, swizzle, surf_offset,
 417                                       surf_index, false, for_gather);
 418    }
 419 }
 420
 421 /**
 422  * Creates a null surface.
 423  *
 424  * This is used when the shader doesn't write to any color output.  An FB
 425  * write to target 0 will still be emitted, because that's how the thread is
 426  * terminated (and computed depth is returned), so we need to have the
 427  * hardware discard the target 0 color output..
 428  */
 429 static void
 430 gen8_emit_null_surface_state(struct brw_context *brw,
 431                              unsigned width,
 432                              unsigned height,
 433                              unsigned samples,
 434                              uint32_t *out_offset)
 435 {
 436    uint32_t *surf = gen8_allocate_surface_state(brw, out_offset, -1);
 437
 438    surf[0] = BRW_SURFACE_NULL << BRW_SURFACE_TYPE_SHIFT |
 439              BRW_SURFACEFORMAT_B8G8R8A8_UNORM << BRW_SURFACE_FORMAT_SHIFT |
 440              GEN8_SURFACE_TILING_Y;
 441    surf[2] = SET_FIELD(width - 1, GEN7_SURFACE_WIDTH) |
 442              SET_FIELD(height - 1, GEN7_SURFACE_HEIGHT);
 443 }
 444
 445 /**
 446  * Sets up a surface state structure to point at the given region.
 447  * While it is only used for the front/back buffer currently, it should be
 448  * usable for further buffers when doing ARB_draw_buffer support.
 449  */
 450 static uint32_t
 451 gen8_update_renderbuffer_surface(struct brw_context *brw,
 452                                  struct gl_renderbuffer *rb,
 453                                  bool layered, unsigned unit /* unused */,
 454                                  uint32_t surf_index)
 455 {
 456    struct gl_context *ctx = &brw->ctx;
 457    struct intel_renderbuffer *irb = intel_renderbuffer(rb);
 458    struct intel_mipmap_tree *mt = irb->mt;
 459    unsigned width = mt->logical_width0;
 460    unsigned height = mt->logical_height0;
 461    unsigned pitch = mt->pitch;
 462    uint32_t tiling = mt->tiling;
 463    unsigned tr_mode = surface_tiling_resource_mode(mt->tr_mode);
 464    uint32_t format = 0;
 465    uint32_t surf_type;
 466    uint32_t offset;
 467    bool is_array = false;
 468    int depth = MAX2(irb->layer_count, 1);
 469    const int min_array_element = (mt->format == MESA_FORMAT_S_UINT8) ?
 470       irb->mt_layer : (irb->mt_layer / MAX2(mt->num_samples, 1));
 471    GLenum gl_target =
 472       rb->TexImage ? rb->TexImage->TexObject->Target : GL_TEXTURE_2D;
 473    const uint32_t mocs = brw->gen >= 9 ? SKL_MOCS_PTE : BDW_MOCS_PTE;
 474
 475    intel_miptree_used_for_rendering(mt);
 476
 477    switch (gl_target) {
 478    case GL_TEXTURE_CUBE_MAP_ARRAY:
 479    case GL_TEXTURE_CUBE_MAP:
 480       surf_type = BRW_SURFACE_2D;
 481       is_array = true;
 482       depth *= 6;
 483       break;
 484    case GL_TEXTURE_3D:
 485       depth = MAX2(irb->mt->logical_depth0, 1);
 486       /* fallthrough */
 487    default:
 488       surf_type = translate_tex_target(gl_target);
 489       is_array = _mesa_is_array_texture(mt->target);
 490       break;
 491    }
 492
 493    /* _NEW_BUFFERS */
 494    /* Render targets can't use IMS layout. */
 495    assert(mt->msaa_layout != INTEL_MSAA_LAYOUT_IMS);
 496    assert(brw_render_target_supported(brw, rb));
 497    mesa_format rb_format = _mesa_get_render_format(ctx,
 498                                                    intel_rb_format(irb));
 499    format = brw->render_target_format[rb_format];
 500    if (unlikely(!brw->format_supported_as_render_target[rb_format]))
 501       _mesa_problem(ctx, "%s: renderbuffer format %s unsupported\n",
 502                     __func__, _mesa_get_format_name(rb_format));
 503
 504    struct intel_mipmap_tree *aux_mt = mt->mcs_mt;
 505    const uint32_t aux_mode = gen8_get_aux_mode(brw, mt);
 506
 507    uint32_t *surf = gen8_allocate_surface_state(brw, &offset, surf_index);
 508
 509    surf[0] = (surf_type << BRW_SURFACE_TYPE_SHIFT) |
 510              (is_array ? GEN7_SURFACE_IS_ARRAY : 0) |
 511              (format << BRW_SURFACE_FORMAT_SHIFT) |
 512              gen8_vertical_alignment(brw, mt, surf_type) |
 513              gen8_horizontal_alignment(brw, mt, surf_type) |
 514              gen8_surface_tiling_mode(tiling);
 515
 516    surf[1] = SET_FIELD(mocs, GEN8_SURFACE_MOCS) | mt->qpitch >> 2;
 517
 518    surf[2] = SET_FIELD(width - 1, GEN7_SURFACE_WIDTH) |
 519              SET_FIELD(height - 1, GEN7_SURFACE_HEIGHT);
 520
 521    surf[3] = (depth - 1) << BRW_SURFACE_DEPTH_SHIFT |
 522              (pitch - 1); /* Surface Pitch */
 523
 524    surf[4] = min_array_element << GEN7_SURFACE_MIN_ARRAY_ELEMENT_SHIFT |
 525              (depth - 1) << GEN7_SURFACE_RENDER_TARGET_VIEW_EXTENT_SHIFT;
 526
 527    if (mt->format != MESA_FORMAT_S_UINT8)
 528       surf[4] |= gen7_surface_msaa_bits(mt->num_samples, mt->msaa_layout);
 529
 530    surf[5] = irb->mt_level - irb->mt->first_level;
 531
 532    if (brw->gen >= 9) {
 533       surf[5] |= SET_FIELD(tr_mode, GEN9_SURFACE_TRMODE);
 534       /* Disable Mip Tail by setting a large value. */
 535       surf[5] |= SET_FIELD(15, GEN9_SURFACE_MIP_TAIL_START_LOD);
 536    }
 537
 538    if (aux_mt) {
 539       uint32_t tile_w, tile_h;
 540       assert(aux_mt->tiling == I915_TILING_Y);
 541       intel_get_tile_dims(aux_mt->tiling, aux_mt->tr_mode,
 542                           aux_mt->cpp, &tile_w, &tile_h);
 543       surf[6] = SET_FIELD(aux_mt->qpitch / 4, GEN8_SURFACE_AUX_QPITCH) |
 544                 SET_FIELD((aux_mt->pitch / tile_w) - 1,
 545                           GEN8_SURFACE_AUX_PITCH) |
 546                 aux_mode;
 547    }
 548
 549    gen8_emit_fast_clear_color(brw, mt, surf);
 550    surf[7] |= SET_FIELD(HSW_SCS_RED,   GEN7_SURFACE_SCS_R) |
 551               SET_FIELD(HSW_SCS_GREEN, GEN7_SURFACE_SCS_G) |
 552               SET_FIELD(HSW_SCS_BLUE,  GEN7_SURFACE_SCS_B) |
 553               SET_FIELD(HSW_SCS_ALPHA, GEN7_SURFACE_SCS_A);
 554
 555    assert(mt->offset % mt->cpp == 0);
 556    *((uint64_t *) &surf[8]) = mt->bo->offset64 + mt->offset; /* reloc */
 557
 558    if (aux_mt) {
 559       *((uint64_t *) &surf[10]) = aux_mt->bo->offset64;
 560       drm_intel_bo_emit_reloc(brw->batch.bo,
 561                               offset + 10 * 4,
 562                               aux_mt->bo, 0,
 563                               I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER);
 564    }
 565
 566    drm_intel_bo_emit_reloc(brw->batch.bo,
 567                            offset + 8 * 4,
 568                            mt->bo,
 569                            mt->offset,
 570                            I915_GEM_DOMAIN_RENDER,
 571                            I915_GEM_DOMAIN_RENDER);
 572
 573    return offset;
 574 }
 575
 576 void
 577 gen8_init_vtable_surface_functions(struct brw_context *brw)
 578 {
 579    brw->vtbl.update_texture_surface = gen8_update_texture_surface;
 580    brw->vtbl.update_renderbuffer_surface = gen8_update_renderbuffer_surface;
 581    brw->vtbl.emit_null_surface_state = gen8_emit_null_surface_state;
 582    brw->vtbl.emit_texture_surface_state = gen8_emit_texture_surface_state;
 583    brw->vtbl.emit_buffer_surface_state = gen8_emit_buffer_surface_state;
 584 }