src/gallium/drivers/i965/brw_screen_texture.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 #include "util/u_memory.h"
  33 #include "util/u_simple_list.h"
  34 #include "util/u_format.h"
  35
  36 #include "brw_screen.h"
  37 #include "brw_defines.h"
  38 #include "brw_structs.h"
  39 #include "brw_winsys.h"
  40
  41
  42
  43 static GLuint translate_tex_target( unsigned target )
  44 {
  45    switch (target) {
  46    case PIPE_TEXTURE_1D:
  47       return BRW_SURFACE_1D;
  48
  49    case PIPE_TEXTURE_2D:
  50       return BRW_SURFACE_2D;
  51
  52    case PIPE_TEXTURE_3D:
  53       return BRW_SURFACE_3D;
  54
  55    case PIPE_TEXTURE_CUBE:
  56       return BRW_SURFACE_CUBE;
  57
  58    default:
  59       assert(0);
  60       return BRW_SURFACE_1D;
  61    }
  62 }
  63
  64
  65 static GLuint translate_tex_format( enum pipe_format pf )
  66 {
  67    switch( pf ) {
  68    case PIPE_FORMAT_L8_UNORM:
  69       return BRW_SURFACEFORMAT_L8_UNORM;
  70
  71    case PIPE_FORMAT_I8_UNORM:
  72       return BRW_SURFACEFORMAT_I8_UNORM;
  73
  74    case PIPE_FORMAT_A8_UNORM:
  75       return BRW_SURFACEFORMAT_A8_UNORM;
  76
  77    case PIPE_FORMAT_L16_UNORM:
  78       return BRW_SURFACEFORMAT_L16_UNORM;
  79
  80       /* XXX: Add these to gallium
  81    case PIPE_FORMAT_I16_UNORM:
  82       return BRW_SURFACEFORMAT_I16_UNORM;
  83
  84    case PIPE_FORMAT_A16_UNORM:
  85       return BRW_SURFACEFORMAT_A16_UNORM;
  86       */
  87
  88    case PIPE_FORMAT_L8A8_UNORM:
  89       return BRW_SURFACEFORMAT_L8A8_UNORM;
  90
  91    case PIPE_FORMAT_B5G6R5_UNORM:
  92       return BRW_SURFACEFORMAT_B5G6R5_UNORM;
  93
  94    case PIPE_FORMAT_B5G5R5A1_UNORM:
  95       return BRW_SURFACEFORMAT_B5G5R5A1_UNORM;
  96
  97    case PIPE_FORMAT_B4G4R4A4_UNORM:
  98       return BRW_SURFACEFORMAT_B4G4R4A4_UNORM;
  99
 100    case PIPE_FORMAT_B8G8R8X8_UNORM:
 101       return BRW_SURFACEFORMAT_R8G8B8X8_UNORM;
 102
 103    case PIPE_FORMAT_B8G8R8A8_UNORM:
 104       return BRW_SURFACEFORMAT_B8G8R8A8_UNORM;
 105
 106    /*
 107     * Video formats
 108     */
 109
 110    case PIPE_FORMAT_YUYV:
 111       return BRW_SURFACEFORMAT_YCRCB_NORMAL;
 112
 113    case PIPE_FORMAT_UYVY:
 114       return BRW_SURFACEFORMAT_YCRCB_SWAPUVY;
 115
 116    /*
 117     * Compressed formats.
 118     */
 119       /* XXX: Add FXT to gallium?
 120    case PIPE_FORMAT_FXT1_RGBA:
 121       return BRW_SURFACEFORMAT_FXT1;
 122       */
 123
 124    case PIPE_FORMAT_DXT1_RGB:
 125        return BRW_SURFACEFORMAT_DXT1_RGB;
 126
 127    case PIPE_FORMAT_DXT1_RGBA:
 128        return BRW_SURFACEFORMAT_BC1_UNORM;
 129
 130    case PIPE_FORMAT_DXT3_RGBA:
 131        return BRW_SURFACEFORMAT_BC2_UNORM;
 132
 133    case PIPE_FORMAT_DXT5_RGBA:
 134        return BRW_SURFACEFORMAT_BC3_UNORM;
 135
 136    /*
 137     * sRGB formats
 138     */
 139
 140    case PIPE_FORMAT_A8B8G8R8_SRGB:
 141       return BRW_SURFACEFORMAT_B8G8R8A8_UNORM_SRGB;
 142
 143    case PIPE_FORMAT_L8A8_SRGB:
 144       return BRW_SURFACEFORMAT_L8A8_UNORM_SRGB;
 145
 146    case PIPE_FORMAT_L8_SRGB:
 147       return BRW_SURFACEFORMAT_L8_UNORM_SRGB;
 148
 149    case PIPE_FORMAT_DXT1_SRGB:
 150       return BRW_SURFACEFORMAT_BC1_UNORM_SRGB;
 151
 152    /*
 153     * Depth formats
 154     */
 155
 156    case PIPE_FORMAT_Z16_UNORM:
 157          return BRW_SURFACEFORMAT_I16_UNORM;
 158
 159    case PIPE_FORMAT_Z24S8_UNORM:
 160    case PIPE_FORMAT_Z24X8_UNORM:
 161          return BRW_SURFACEFORMAT_I24X8_UNORM;
 162
 163    case PIPE_FORMAT_Z32_FLOAT:
 164          return BRW_SURFACEFORMAT_I32_FLOAT;
 165
 166       /* XXX: presumably for bump mapping.  Add this to mesa state
 167        * tracker?
 168        *
 169        * XXX: Add flipped versions of these formats to Gallium.
 170        */
 171    case PIPE_FORMAT_R8G8_SNORM:
 172       return BRW_SURFACEFORMAT_R8G8_SNORM;
 173
 174    case PIPE_FORMAT_R8G8B8A8_SNORM:
 175       return BRW_SURFACEFORMAT_R8G8B8A8_SNORM;
 176
 177    default:
 178       return BRW_SURFACEFORMAT_INVALID;
 179    }
 180 }
 181
 182
 183
 184
 185
 186 static struct pipe_texture *brw_texture_create( struct pipe_screen *screen,
 187                                                 const struct pipe_texture *templ )
 188
 189 {
 190    struct brw_screen *bscreen = brw_screen(screen);
 191    struct brw_texture *tex;
 192    enum brw_buffer_type buffer_type;
 193    enum pipe_error ret;
 194    GLuint format;
 195
 196    tex = CALLOC_STRUCT(brw_texture);
 197    if (tex == NULL)
 198       return NULL;
 199
 200    memcpy(&tex->base, templ, sizeof *templ);
 201    pipe_reference_init(&tex->base.reference, 1);
 202    tex->base.screen = screen;
 203
 204    /* XXX: compressed textures need special treatment here
 205     */
 206    tex->cpp = util_format_get_blocksize(tex->base.format);
 207    tex->compressed = util_format_is_compressed(tex->base.format);
 208
 209    make_empty_list(&tex->views[0]);
 210    make_empty_list(&tex->views[1]);
 211
 212    /* XXX: No tiling with compressed textures??
 213     */
 214    if (tex->compressed == 0 &&
 215        !bscreen->no_tiling)
 216    {
 217       if (bscreen->chipset.is_965 &&
 218           util_format_is_depth_or_stencil(templ->format))
 219          tex->tiling = BRW_TILING_Y;
 220       else
 221          tex->tiling = BRW_TILING_X;
 222    }
 223    else {
 224       tex->tiling = BRW_TILING_NONE;
 225    }
 226
 227
 228
 229
 230    if (!brw_texture_layout( bscreen, tex ))
 231       goto fail;
 232
 233
 234    if (templ->tex_usage & (PIPE_TEXTURE_USAGE_SCANOUT |
 235                            PIPE_TEXTURE_USAGE_SHARED)) {
 236       buffer_type = BRW_BUFFER_TYPE_SCANOUT;
 237    }
 238    else {
 239       buffer_type = BRW_BUFFER_TYPE_TEXTURE;
 240    }
 241
 242    ret = bscreen->sws->bo_alloc( bscreen->sws,
 243                                  buffer_type,
 244                                  tex->pitch * tex->total_height * tex->cpp,
 245                                  64,
 246                                  &tex->bo );
 247    if (ret)
 248       goto fail;
 249
 250    tex->ss.ss0.mipmap_layout_mode = BRW_SURFACE_MIPMAPLAYOUT_BELOW;
 251    tex->ss.ss0.surface_type = translate_tex_target(tex->base.target);
 252
 253    format = translate_tex_format(tex->base.format);
 254    assert(format != BRW_SURFACEFORMAT_INVALID);
 255    tex->ss.ss0.surface_format = format;
 256
 257    /* This is ok for all textures with channel width 8bit or less:
 258     */
 259 /*    tex->ss.ss0.data_return_format = BRW_SURFACERETURNFORMAT_S1; */
 260
 261
 262    /* XXX: what happens when tex->bo->offset changes???
 263     */
 264    tex->ss.ss1.base_addr = 0; /* reloc */
 265    tex->ss.ss2.mip_count = tex->base.last_level;
 266    tex->ss.ss2.width = tex->base.width0 - 1;
 267    tex->ss.ss2.height = tex->base.height0 - 1;
 268
 269    switch (tex->tiling) {
 270    case BRW_TILING_NONE:
 271       tex->ss.ss3.tiled_surface = 0;
 272       tex->ss.ss3.tile_walk = 0;
 273       break;
 274    case BRW_TILING_X:
 275       tex->ss.ss3.tiled_surface = 1;
 276       tex->ss.ss3.tile_walk = BRW_TILEWALK_XMAJOR;
 277       break;
 278    case BRW_TILING_Y:
 279       tex->ss.ss3.tiled_surface = 1;
 280       tex->ss.ss3.tile_walk = BRW_TILEWALK_YMAJOR;
 281       break;
 282    }
 283
 284    tex->ss.ss3.pitch = (tex->pitch * tex->cpp) - 1;
 285    tex->ss.ss3.depth = tex->base.depth0 - 1;
 286
 287    tex->ss.ss4.min_lod = 0;
 288
 289    if (tex->base.target == PIPE_TEXTURE_CUBE) {
 290       tex->ss.ss0.cube_pos_x = 1;
 291       tex->ss.ss0.cube_pos_y = 1;
 292       tex->ss.ss0.cube_pos_z = 1;
 293       tex->ss.ss0.cube_neg_x = 1;
 294       tex->ss.ss0.cube_neg_y = 1;
 295       tex->ss.ss0.cube_neg_z = 1;
 296    }
 297
 298    return &tex->base;
 299
 300 fail:
 301    bo_reference(&tex->bo, NULL);
 302    FREE(tex);
 303    return NULL;
 304 }
 305
 306 static struct pipe_texture *
 307 brw_texture_from_handle(struct pipe_screen *screen,
 308                         const struct pipe_texture *templ,
 309                         struct winsys_handle *whandle)
 310 {
 311    struct brw_screen *bscreen = brw_screen(screen);
 312    struct brw_texture *tex;
 313    struct brw_winsys_buffer *buffer;
 314    unsigned tiling;
 315    unsigned pitch;
 316
 317    if (templ->target != PIPE_TEXTURE_2D ||
 318        templ->last_level != 0 ||
 319        templ->depth0 != 1)
 320       return NULL;
 321
 322    if (util_format_is_compressed(templ->format))
 323       return NULL;
 324
 325    tex = CALLOC_STRUCT(brw_texture);
 326    if (!tex)
 327       return NULL;
 328
 329    if (bscreen->sws->bo_from_handle(bscreen->sws, whandle, &pitch, &tiling, &buffer) != PIPE_OK)
 330       goto fail;
 331
 332    memcpy(&tex->base, templ, sizeof *templ);
 333    pipe_reference_init(&tex->base.reference, 1);
 334    tex->base.screen = screen;
 335
 336    /* XXX: cpp vs. blocksize
 337     */
 338    tex->cpp = util_format_get_blocksize(tex->base.format);
 339    tex->tiling = tiling;
 340
 341    make_empty_list(&tex->views[0]);
 342    make_empty_list(&tex->views[1]);
 343
 344    if (!brw_texture_layout(bscreen, tex))
 345       goto fail;
 346
 347    /* XXX Maybe some more checks? */
 348    if ((pitch / tex->cpp) < tex->pitch)
 349       goto fail;
 350
 351    tex->pitch = pitch / tex->cpp;
 352
 353    tex->bo = buffer;
 354
 355    /* fix this warning */
 356 #if 0
 357    if (tex->size > buffer->size)
 358       goto fail;
 359 #endif
 360
 361    tex->ss.ss0.mipmap_layout_mode = BRW_SURFACE_MIPMAPLAYOUT_BELOW;
 362    tex->ss.ss0.surface_type = translate_tex_target(tex->base.target);
 363    tex->ss.ss0.surface_format = translate_tex_format(tex->base.format);
 364    assert(tex->ss.ss0.surface_format != BRW_SURFACEFORMAT_INVALID);
 365
 366    /* This is ok for all textures with channel width 8bit or less:
 367     */
 368 /*    tex->ss.ss0.data_return_format = BRW_SURFACERETURNFORMAT_S1; */
 369
 370
 371    /* XXX: what happens when tex->bo->offset changes???
 372     */
 373    tex->ss.ss1.base_addr = 0; /* reloc */
 374    tex->ss.ss2.mip_count = tex->base.last_level;
 375    tex->ss.ss2.width = tex->base.width0 - 1;
 376    tex->ss.ss2.height = tex->base.height0 - 1;
 377
 378    switch (tex->tiling) {
 379    case BRW_TILING_NONE:
 380       tex->ss.ss3.tiled_surface = 0;
 381       tex->ss.ss3.tile_walk = 0;
 382       break;
 383    case BRW_TILING_X:
 384       tex->ss.ss3.tiled_surface = 1;
 385       tex->ss.ss3.tile_walk = BRW_TILEWALK_XMAJOR;
 386       break;
 387    case BRW_TILING_Y:
 388       tex->ss.ss3.tiled_surface = 1;
 389       tex->ss.ss3.tile_walk = BRW_TILEWALK_YMAJOR;
 390       break;
 391    }
 392
 393    tex->ss.ss3.pitch = (tex->pitch * tex->cpp) - 1;
 394    tex->ss.ss3.depth = tex->base.depth0 - 1;
 395
 396    tex->ss.ss4.min_lod = 0;
 397
 398    return &tex->base;
 399
 400 fail:
 401    FREE(tex);
 402    return NULL;
 403 }
 404
 405 static boolean
 406 brw_texture_get_handle(struct pipe_screen *screen,
 407                        struct pipe_texture *texture,
 408                        struct winsys_handle *whandle)
 409 {
 410    struct brw_screen *bscreen = brw_screen(screen);
 411    struct brw_texture *tex = brw_texture(texture);
 412    unsigned stride;
 413
 414    stride = tex->pitch * tex->cpp;
 415
 416    return bscreen->sws->bo_get_handle(tex->bo, whandle, stride);
 417 }
 418
 419
 420
 421 static void brw_texture_destroy(struct pipe_texture *pt)
 422 {
 423    struct brw_texture *tex = brw_texture(pt);
 424    bo_reference(&tex->bo, NULL);
 425    FREE(pt);
 426 }
 427
 428
 429 static boolean brw_is_format_supported( struct pipe_screen *screen,
 430                                         enum pipe_format format,
 431                                         enum pipe_texture_target target,
 432                                         unsigned tex_usage,
 433                                         unsigned geom_flags )
 434 {
 435    return translate_tex_format(format) != BRW_SURFACEFORMAT_INVALID;
 436 }
 437
 438
 439 boolean brw_is_texture_referenced_by_bo( struct brw_screen *brw_screen,
 440                                       struct pipe_texture *texture,
 441                                       unsigned face,
 442                                       unsigned level,
 443                                       struct brw_winsys_buffer *bo )
 444 {
 445    struct brw_texture *tex = brw_texture(texture);
 446    struct brw_surface *surf;
 447    int i;
 448
 449    /* XXX: this is subject to false positives if the underlying
 450     * texture BO is referenced, we can't tell whether the sub-region
 451     * we care about participates in that.
 452     */
 453    if (brw_screen->sws->bo_references( bo, tex->bo ))
 454       return TRUE;
 455
 456    /* Find any view on this texture for this face/level and see if it
 457     * is referenced:
 458     */
 459    for (i = 0; i < 2; i++) {
 460       foreach (surf, &tex->views[i]) {
 461          if (surf->bo == tex->bo)
 462             continue;
 463
 464          if (surf->id.bits.face != face ||
 465              surf->id.bits.level != level)
 466             continue;
 467
 468          if (brw_screen->sws->bo_references( bo, surf->bo))
 469             return TRUE;
 470       }
 471    }
 472
 473    return FALSE;
 474 }
 475
 476
 477 /*
 478  * Transfer functions
 479  */
 480
 481 static struct pipe_transfer*
 482 brw_get_tex_transfer(struct pipe_screen *screen,
 483                      struct pipe_texture *texture,
 484                      unsigned face, unsigned level, unsigned zslice,
 485                      enum pipe_transfer_usage usage, unsigned x, unsigned y,
 486                      unsigned w, unsigned h)
 487 {
 488    struct brw_texture *tex = brw_texture(texture);
 489    struct brw_transfer *trans;
 490    unsigned offset;  /* in bytes */
 491
 492    if (texture->target == PIPE_TEXTURE_CUBE) {
 493       offset = tex->image_offset[level][face];
 494    } else if (texture->target == PIPE_TEXTURE_3D) {
 495       offset = tex->image_offset[level][zslice];
 496    } else {
 497       offset = tex->image_offset[level][0];
 498       assert(face == 0);
 499       assert(zslice == 0);
 500    }
 501
 502    trans = CALLOC_STRUCT(brw_transfer);
 503    if (trans) {
 504       pipe_texture_reference(&trans->base.texture, texture);
 505       trans->base.x = x;
 506       trans->base.y = y;
 507       trans->base.width = w;
 508       trans->base.height = h;
 509       trans->base.stride = tex->pitch * tex->cpp;
 510       trans->offset = offset;
 511       trans->base.usage = usage;
 512    }
 513    return &trans->base;
 514 }
 515
 516 static void *
 517 brw_transfer_map(struct pipe_screen *screen,
 518                  struct pipe_transfer *transfer)
 519 {
 520    struct brw_texture *tex = brw_texture(transfer->texture);
 521    struct brw_winsys_screen *sws = brw_screen(screen)->sws;
 522    char *map;
 523    unsigned usage = transfer->usage;
 524
 525    map = sws->bo_map(tex->bo,
 526                      BRW_DATA_OTHER,
 527                      0,
 528                      tex->bo->size,
 529                      (usage & PIPE_TRANSFER_WRITE) ? TRUE : FALSE,
 530                      (usage & 0) ? TRUE : FALSE,
 531                      (usage & 0) ? TRUE : FALSE);
 532
 533    if (!map)
 534       return NULL;
 535
 536    /* XXX: blocksize and compressed textures
 537     */
 538    return map + brw_transfer(transfer)->offset +
 539       transfer->y /* / transfer->block.height */ * transfer->stride +
 540       transfer->x /* / transfer->block.width */ * brw_texture(transfer->texture)->cpp;
 541 }
 542
 543 static void
 544 brw_transfer_unmap(struct pipe_screen *screen,
 545                    struct pipe_transfer *transfer)
 546 {
 547    struct brw_texture *tex = brw_texture(transfer->texture);
 548    struct brw_winsys_screen *sws = brw_screen(screen)->sws;
 549
 550    sws->bo_unmap(tex->bo);
 551 }
 552
 553 static void
 554 brw_tex_transfer_destroy(struct pipe_transfer *trans)
 555 {
 556    pipe_texture_reference(&trans->texture, NULL);
 557    FREE(trans);
 558 }
 559
 560
 561 void brw_screen_tex_init( struct brw_screen *brw_screen )
 562 {
 563    brw_screen->base.is_format_supported = brw_is_format_supported;
 564    brw_screen->base.texture_create = brw_texture_create;
 565    brw_screen->base.texture_from_handle = brw_texture_from_handle;
 566    brw_screen->base.texture_get_handle = brw_texture_get_handle;
 567    brw_screen->base.texture_destroy = brw_texture_destroy;
 568    brw_screen->base.get_tex_transfer = brw_get_tex_transfer;
 569    brw_screen->base.transfer_map = brw_transfer_map;
 570    brw_screen->base.transfer_unmap = brw_transfer_unmap;
 571    brw_screen->base.tex_transfer_destroy = brw_tex_transfer_destroy;
 572 }