src/gallium/drivers/svga/svga_surface.c

   1 /**********************************************************
   2  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26 #include "svga_cmd.h"
  27
  28 #include "pipe/p_state.h"
  29 #include "pipe/p_defines.h"
  30 #include "util/u_inlines.h"
  31 #include "os/os_thread.h"
  32 #include "util/u_bitmask.h"
  33 #include "util/u_format.h"
  34 #include "util/u_math.h"
  35 #include "util/u_memory.h"
  36
  37 #include "svga_format.h"
  38 #include "svga_screen.h"
  39 #include "svga_context.h"
  40 #include "svga_sampler_view.h"
  41 #include "svga_resource_texture.h"
  42 #include "svga_surface.h"
  43 #include "svga_debug.h"
  44
  45 static void svga_mark_surface_dirty(struct pipe_surface *surf);
  46
  47 void
  48 svga_texture_copy_handle(struct svga_context *svga,
  49                          struct svga_winsys_surface *src_handle,
  50                          unsigned src_x, unsigned src_y, unsigned src_z,
  51                          unsigned src_level, unsigned src_layer,
  52                          struct svga_winsys_surface *dst_handle,
  53                          unsigned dst_x, unsigned dst_y, unsigned dst_z,
  54                          unsigned dst_level, unsigned dst_layer,
  55                          unsigned width, unsigned height, unsigned depth)
  56 {
  57    struct svga_surface dst, src;
  58    enum pipe_error ret;
  59    SVGA3dCopyBox box, *boxes;
  60
  61    assert(svga);
  62
  63    src.handle = src_handle;
  64    src.real_level = src_level;
  65    src.real_layer = src_layer;
  66    src.real_zslice = 0;
  67
  68    dst.handle = dst_handle;
  69    dst.real_level = dst_level;
  70    dst.real_layer = dst_layer;
  71    dst.real_zslice = 0;
  72
  73    box.x = dst_x;
  74    box.y = dst_y;
  75    box.z = dst_z;
  76    box.w = width;
  77    box.h = height;
  78    box.d = depth;
  79    box.srcx = src_x;
  80    box.srcy = src_y;
  81    box.srcz = src_z;
  82
  83 /*
  84    SVGA_DBG(DEBUG_VIEWS, "mipcopy src: %p %u (%ux%ux%u), dst: %p %u (%ux%ux%u)\n",
  85             src_handle, src_level, src_x, src_y, src_z,
  86             dst_handle, dst_level, dst_x, dst_y, dst_z);
  87 */
  88
  89    ret = SVGA3D_BeginSurfaceCopy(svga->swc,
  90                                  &src.base,
  91                                  &dst.base,
  92                                  &boxes, 1);
  93    if (ret != PIPE_OK) {
  94       svga_context_flush(svga, NULL);
  95       ret = SVGA3D_BeginSurfaceCopy(svga->swc,
  96                                     &src.base,
  97                                     &dst.base,
  98                                     &boxes, 1);
  99       assert(ret == PIPE_OK);
 100    }
 101    *boxes = box;
 102    SVGA_FIFOCommitAll(svga->swc);
 103 }
 104
 105
 106 struct svga_winsys_surface *
 107 svga_texture_view_surface(struct svga_context *svga,
 108                           struct svga_texture *tex,
 109                           unsigned bind_flags,
 110                           SVGA3dSurfaceFlags flags,
 111                           SVGA3dSurfaceFormat format,
 112                           unsigned start_mip,
 113                           unsigned num_mip,
 114                           int layer_pick,
 115                           unsigned num_layers,
 116                           int zslice_pick,
 117                           struct svga_host_surface_cache_key *key) /* OUT */
 118 {
 119    struct svga_screen *ss = svga_screen(svga->pipe.screen);
 120    struct svga_winsys_surface *handle;
 121    uint32_t i, j;
 122    unsigned z_offset = 0;
 123
 124    SVGA_DBG(DEBUG_PERF,
 125             "svga: Create surface view: layer %d zslice %d mips %d..%d\n",
 126             layer_pick, zslice_pick, start_mip, start_mip+num_mip-1);
 127
 128    key->flags = flags;
 129    key->format = format;
 130    key->numMipLevels = num_mip;
 131    key->size.width = u_minify(tex->b.b.width0, start_mip);
 132    key->size.height = u_minify(tex->b.b.height0, start_mip);
 133    key->size.depth = zslice_pick < 0 ? u_minify(tex->b.b.depth0, start_mip) : 1;
 134    key->cachable = 1;
 135    key->arraySize = 1;
 136    key->numFaces = 1;
 137    key->sampleCount = tex->b.b.nr_samples;
 138
 139    if (key->sampleCount > 1) {
 140       key->flags |= SVGA3D_SURFACE_MASKABLE_ANTIALIAS;
 141    }
 142
 143    if (tex->b.b.target == PIPE_TEXTURE_CUBE && layer_pick < 0) {
 144       key->flags |= SVGA3D_SURFACE_CUBEMAP;
 145       key->numFaces = 6;
 146    } else if (tex->b.b.target == PIPE_TEXTURE_1D_ARRAY ||
 147               tex->b.b.target == PIPE_TEXTURE_2D_ARRAY) {
 148       key->arraySize = num_layers;
 149    }
 150
 151    if (key->format == SVGA3D_FORMAT_INVALID) {
 152       key->cachable = 0;
 153       return NULL;
 154    }
 155
 156    SVGA_DBG(DEBUG_DMA, "surface_create for texture view\n");
 157    handle = svga_screen_surface_create(ss, bind_flags, PIPE_USAGE_DEFAULT, key);
 158    if (!handle) {
 159       key->cachable = 0;
 160       return NULL;
 161    }
 162
 163    SVGA_DBG(DEBUG_DMA, " --> got sid %p (texture view)\n", handle);
 164
 165    if (layer_pick < 0)
 166       layer_pick = 0;
 167
 168    if (zslice_pick >= 0)
 169       z_offset = zslice_pick;
 170
 171    for (i = 0; i < key->numMipLevels; i++) {
 172       for (j = 0; j < key->numFaces * key->arraySize; j++) {
 173          if (svga_is_texture_level_defined(tex, j + layer_pick, i + start_mip)) {
 174             unsigned depth = (zslice_pick < 0 ?
 175                               u_minify(tex->b.b.depth0, i + start_mip) :
 176                               1);
 177
 178             svga_texture_copy_handle(svga,
 179                                      tex->handle,
 180                                      0, 0, z_offset,
 181                                      i + start_mip,
 182                                      j + layer_pick,
 183                                      handle, 0, 0, 0, i, j,
 184                                      u_minify(tex->b.b.width0, i + start_mip),
 185                                      u_minify(tex->b.b.height0, i + start_mip),
 186                                      depth);
 187          }
 188       }
 189    }
 190
 191    return handle;
 192 }
 193
 194
 195 /**
 196  * A helper function to create a surface view.
 197  * The view boolean flag specifies whether svga_texture_view_surface()
 198  * will be called to create a cloned surface and resource for the view.
 199  */
 200 static struct pipe_surface *
 201 svga_create_surface_view(struct pipe_context *pipe,
 202                          struct pipe_resource *pt,
 203                          const struct pipe_surface *surf_tmpl,
 204                          boolean view)
 205 {
 206    struct svga_context *svga = svga_context(pipe);
 207    struct svga_texture *tex = svga_texture(pt);
 208    struct pipe_screen *screen = pipe->screen;
 209    struct svga_screen *ss = svga_screen(screen);
 210    struct svga_surface *s;
 211    unsigned layer, zslice, bind;
 212    unsigned nlayers = 1;
 213    SVGA3dSurfaceFlags flags = 0;
 214    SVGA3dSurfaceFormat format;
 215    struct pipe_surface *retVal = NULL;
 216
 217    s = CALLOC_STRUCT(svga_surface);
 218    if (!s)
 219       return NULL;
 220
 221    SVGA_STATS_TIME_PUSH(ss->sws, SVGA_STATS_TIME_CREATESURFACEVIEW);
 222
 223    if (pt->target == PIPE_TEXTURE_CUBE) {
 224       layer = surf_tmpl->u.tex.first_layer;
 225       zslice = 0;
 226    }
 227    else if (pt->target == PIPE_TEXTURE_1D_ARRAY ||
 228             pt->target == PIPE_TEXTURE_2D_ARRAY) {
 229       layer = surf_tmpl->u.tex.first_layer;
 230       zslice = 0;
 231       nlayers = surf_tmpl->u.tex.last_layer - surf_tmpl->u.tex.first_layer + 1;
 232    }
 233    else {
 234       layer = 0;
 235       zslice = surf_tmpl->u.tex.first_layer;
 236    }
 237
 238    pipe_reference_init(&s->base.reference, 1);
 239    pipe_resource_reference(&s->base.texture, pt);
 240    s->base.context = pipe;
 241    s->base.format = surf_tmpl->format;
 242    s->base.width = u_minify(pt->width0, surf_tmpl->u.tex.level);
 243    s->base.height = u_minify(pt->height0, surf_tmpl->u.tex.level);
 244    s->base.u.tex.level = surf_tmpl->u.tex.level;
 245    s->base.u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 246    s->base.u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 247    s->view_id = SVGA3D_INVALID_ID;
 248
 249    s->backed = NULL;
 250
 251    if (util_format_is_depth_or_stencil(surf_tmpl->format)) {
 252       flags = SVGA3D_SURFACE_HINT_DEPTHSTENCIL |
 253               SVGA3D_SURFACE_BIND_DEPTH_STENCIL;
 254       bind = PIPE_BIND_DEPTH_STENCIL;
 255    }
 256    else {
 257       flags = SVGA3D_SURFACE_HINT_RENDERTARGET |
 258               SVGA3D_SURFACE_BIND_RENDER_TARGET;
 259       bind = PIPE_BIND_RENDER_TARGET;
 260    }
 261
 262    if (tex->imported)
 263       format = tex->key.format;
 264    else
 265       format = svga_translate_format(ss, surf_tmpl->format, bind);
 266
 267    assert(format != SVGA3D_FORMAT_INVALID);
 268
 269    if (view) {
 270       SVGA_DBG(DEBUG_VIEWS, "svga: Surface view: yes %p, level %u layer %u z %u, %p\n",
 271                pt, surf_tmpl->u.tex.level, layer, zslice, s);
 272
 273       if (svga_have_vgpu10(svga)) {
 274          switch (pt->target) {
 275          case PIPE_TEXTURE_1D:
 276             flags |= SVGA3D_SURFACE_1D;
 277             break;
 278          case PIPE_TEXTURE_1D_ARRAY:
 279             flags |= SVGA3D_SURFACE_1D | SVGA3D_SURFACE_ARRAY;
 280             break;
 281          case PIPE_TEXTURE_2D_ARRAY:
 282             flags |= SVGA3D_SURFACE_ARRAY;
 283             break;
 284          case PIPE_TEXTURE_3D:
 285             flags |= SVGA3D_SURFACE_VOLUME;
 286             break;
 287          case PIPE_TEXTURE_CUBE:
 288             if (nlayers == 6)
 289                flags |= SVGA3D_SURFACE_CUBEMAP;
 290             break;
 291          default:
 292             break;
 293          }
 294       }
 295
 296       /* When we clone the surface view resource, use the format used in
 297        * the creation of the original resource.
 298        */
 299       s->handle = svga_texture_view_surface(svga, tex, bind, flags,
 300                                             tex->key.format,
 301                                             surf_tmpl->u.tex.level, 1,
 302                                             layer, nlayers, zslice, &s->key);
 303       if (!s->handle) {
 304          FREE(s);
 305          goto done;
 306       }
 307
 308       s->key.format = format;
 309       s->real_layer = 0;
 310       s->real_level = 0;
 311       s->real_zslice = 0;
 312    } else {
 313       SVGA_DBG(DEBUG_VIEWS,
 314                "svga: Surface view: no %p, level %u, layer %u, z %u, %p\n",
 315                pt, surf_tmpl->u.tex.level, layer, zslice, s);
 316
 317       memset(&s->key, 0, sizeof s->key);
 318       s->key.format = format;
 319       s->handle = tex->handle;
 320       s->real_layer = layer;
 321       s->real_zslice = zslice;
 322       s->real_level = surf_tmpl->u.tex.level;
 323    }
 324
 325    svga->hud.num_surface_views++;
 326    retVal = &s->base;
 327
 328 done:
 329    SVGA_STATS_TIME_POP(ss->sws);
 330    return retVal;
 331 }
 332
 333
 334 static struct pipe_surface *
 335 svga_create_surface(struct pipe_context *pipe,
 336                     struct pipe_resource *pt,
 337                     const struct pipe_surface *surf_tmpl)
 338 {
 339    struct svga_context *svga = svga_context(pipe);
 340    struct pipe_screen *screen = pipe->screen;
 341    struct pipe_surface *surf = NULL;
 342    boolean view = FALSE;
 343
 344    SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_CREATESURFACE);
 345
 346    if (svga_screen(screen)->debug.force_surface_view)
 347       view = TRUE;
 348
 349    if (surf_tmpl->u.tex.level != 0 &&
 350        svga_screen(screen)->debug.force_level_surface_view)
 351       view = TRUE;
 352
 353    if (pt->target == PIPE_TEXTURE_3D)
 354       view = TRUE;
 355
 356    if (svga_have_vgpu10(svga) || svga_screen(screen)->debug.no_surface_view)
 357       view = FALSE;
 358
 359    surf = svga_create_surface_view(pipe, pt, surf_tmpl, view);
 360
 361    SVGA_STATS_TIME_POP(svga_sws(svga));
 362
 363    return surf;
 364 }
 365
 366
 367 /**
 368  * Clone the surface view and its associated resource.
 369  */
 370 static struct svga_surface *
 371 create_backed_surface_view(struct svga_context *svga, struct svga_surface *s)
 372 {
 373    SVGA_STATS_TIME_PUSH(svga_sws(svga),
 374                         SVGA_STATS_TIME_CREATEBACKEDSURFACEVIEW);
 375
 376    if (!s->backed) {
 377       struct svga_texture *tex = svga_texture(s->base.texture);
 378       struct pipe_surface *backed_view;
 379
 380       backed_view = svga_create_surface_view(&svga->pipe,
 381                                              &tex->b.b,
 382                                              &s->base,
 383                                              TRUE);
 384       if (!backed_view)
 385          return NULL;
 386
 387       s->backed = svga_surface(backed_view);
 388    }
 389
 390    svga_mark_surface_dirty(&s->backed->base);
 391
 392    SVGA_STATS_TIME_POP(svga_sws(svga));
 393
 394    return s->backed;
 395 }
 396
 397 /**
 398  * Create a DX RenderTarget/DepthStencil View for the given surface,
 399  * if needed.
 400  */
 401 struct pipe_surface *
 402 svga_validate_surface_view(struct svga_context *svga, struct svga_surface *s)
 403 {
 404    enum pipe_error ret = PIPE_OK;
 405    unsigned shader;
 406    struct pipe_surface *surf = NULL;
 407
 408    assert(svga_have_vgpu10(svga));
 409
 410    SVGA_STATS_TIME_PUSH(svga_sws(svga),
 411                         SVGA_STATS_TIME_VALIDATESURFACEVIEW);
 412
 413    /**
 414     * DX spec explicitly specifies that no resource can be bound to a render
 415     * target view and a shader resource view simultanously.
 416     * So first check if the resource bound to this surface view collides with
 417     * a sampler view. If so, then we will clone this surface view and its
 418     * associated resource. We will then use the cloned surface view for
 419     * render target.
 420     */
 421    for (shader = PIPE_SHADER_VERTEX; shader <= PIPE_SHADER_GEOMETRY; shader++) {
 422       if (svga_check_sampler_view_resource_collision(svga, s->handle, shader)) {
 423          SVGA_DBG(DEBUG_VIEWS,
 424                   "same resource used in shaderResource and renderTarget 0x%x\n",
 425                   s->handle);
 426          s = create_backed_surface_view(svga, s);
 427          if (!s)
 428             goto done;
 429
 430          break;
 431       }
 432    }
 433
 434    if (s->view_id == SVGA3D_INVALID_ID) {
 435       SVGA3dResourceType resType;
 436       SVGA3dRenderTargetViewDesc desc;
 437
 438       desc.tex.mipSlice = s->real_level;
 439       desc.tex.firstArraySlice = s->real_layer + s->real_zslice;
 440       desc.tex.arraySize =
 441          s->base.u.tex.last_layer - s->base.u.tex.first_layer + 1;
 442
 443       s->view_id = util_bitmask_add(svga->surface_view_id_bm);
 444
 445       switch (s->base.texture->target) {
 446       case PIPE_TEXTURE_1D:
 447       case PIPE_TEXTURE_1D_ARRAY:
 448          resType = SVGA3D_RESOURCE_TEXTURE1D;
 449          break;
 450       case PIPE_TEXTURE_RECT:
 451       case PIPE_TEXTURE_2D:
 452       case PIPE_TEXTURE_2D_ARRAY:
 453       case PIPE_TEXTURE_CUBE:
 454          /* drawing to cube map is treated as drawing to 2D array */
 455          resType = SVGA3D_RESOURCE_TEXTURE2D;
 456          break;
 457       case PIPE_TEXTURE_3D:
 458          resType = SVGA3D_RESOURCE_TEXTURE3D;
 459          break;
 460       default:
 461          assert(!"Unexpected texture target");
 462          resType = SVGA3D_RESOURCE_TEXTURE2D;
 463       }
 464
 465       if (util_format_is_depth_or_stencil(s->base.format)) {
 466          ret = SVGA3D_vgpu10_DefineDepthStencilView(svga->swc,
 467                                                     s->view_id,
 468                                                     s->handle,
 469                                                     s->key.format,
 470                                                     resType,
 471                                                     &desc);
 472       }
 473       else {
 474          SVGA3dSurfaceFormat view_format = s->key.format;
 475          const struct svga_texture *stex = svga_texture(s->base.texture);
 476
 477          /* Can't create RGBA render target view of a RGBX surface so adjust
 478           * the view format.  We do something similar for texture samplers in
 479           * svga_validate_pipe_sampler_view().
 480           */
 481          if (view_format == SVGA3D_B8G8R8A8_UNORM &&
 482              stex->key.format == SVGA3D_B8G8R8X8_TYPELESS) {
 483             view_format = SVGA3D_B8G8R8X8_UNORM;
 484          }
 485
 486          ret = SVGA3D_vgpu10_DefineRenderTargetView(svga->swc,
 487                                                     s->view_id,
 488                                                     s->handle,
 489                                                     view_format,
 490                                                     resType,
 491                                                     &desc);
 492       }
 493
 494       if (ret != PIPE_OK) {
 495          util_bitmask_clear(svga->surface_view_id_bm, s->view_id);
 496          s->view_id = SVGA3D_INVALID_ID;
 497          goto done;
 498       }
 499    }
 500    surf = &s->base;
 501
 502 done:
 503    SVGA_STATS_TIME_POP(svga_sws(svga));
 504
 505    return surf;
 506 }
 507
 508
 509
 510 static void
 511 svga_surface_destroy(struct pipe_context *pipe,
 512                      struct pipe_surface *surf)
 513 {
 514    struct svga_context *svga = svga_context(pipe);
 515    struct svga_surface *s = svga_surface(surf);
 516    struct svga_texture *t = svga_texture(surf->texture);
 517    struct svga_screen *ss = svga_screen(surf->texture->screen);
 518    enum pipe_error ret = PIPE_OK;
 519
 520    SVGA_STATS_TIME_PUSH(ss->sws, SVGA_STATS_TIME_DESTROYSURFACE);
 521
 522    /* Destroy the backed view surface if it exists */
 523    if (s->backed) {
 524       svga_surface_destroy(pipe, &s->backed->base);
 525       s->backed = NULL;
 526    }
 527
 528    if (s->handle != t->handle) {
 529       SVGA_DBG(DEBUG_DMA, "unref sid %p (tex surface)\n", s->handle);
 530       svga_screen_surface_destroy(ss, &s->key, &s->handle);
 531    }
 532
 533    if (s->view_id != SVGA3D_INVALID_ID) {
 534       unsigned try;
 535
 536       assert(svga_have_vgpu10(svga));
 537       for (try = 0; try < 2; try++) {
 538          if (util_format_is_depth_or_stencil(s->base.format)) {
 539             ret = SVGA3D_vgpu10_DestroyDepthStencilView(svga->swc, s->view_id);
 540          }
 541          else {
 542             ret = SVGA3D_vgpu10_DestroyRenderTargetView(svga->swc, s->view_id);
 543          }
 544          if (ret == PIPE_OK)
 545             break;
 546          svga_context_flush(svga, NULL);
 547       }
 548       assert(ret == PIPE_OK);
 549       util_bitmask_clear(svga->surface_view_id_bm, s->view_id);
 550    }
 551
 552    pipe_resource_reference(&surf->texture, NULL);
 553    FREE(surf);
 554
 555    svga->hud.num_surface_views--;
 556    SVGA_STATS_TIME_POP(ss->sws);
 557 }
 558
 559
 560 static void
 561 svga_mark_surface_dirty(struct pipe_surface *surf)
 562 {
 563    struct svga_surface *s = svga_surface(surf);
 564    struct svga_texture *tex = svga_texture(surf->texture);
 565
 566    if (!s->dirty) {
 567       s->dirty = TRUE;
 568
 569       if (s->handle == tex->handle) {
 570          /* hmm so 3d textures always have all their slices marked ? */
 571          svga_define_texture_level(tex, surf->u.tex.first_layer,
 572                                    surf->u.tex.level);
 573       }
 574       else {
 575          /* this will happen later in svga_propagate_surface */
 576       }
 577    }
 578
 579    /* Increment the view_age and texture age for this surface's mipmap
 580     * level so that any sampler views into the texture are re-validated too.
 581     */
 582    svga_age_texture_view(tex, surf->u.tex.level);
 583 }
 584
 585
 586 void
 587 svga_mark_surfaces_dirty(struct svga_context *svga)
 588 {
 589    unsigned i;
 590
 591    for (i = 0; i < svga->curr.framebuffer.nr_cbufs; i++) {
 592       if (svga->curr.framebuffer.cbufs[i])
 593          svga_mark_surface_dirty(svga->curr.framebuffer.cbufs[i]);
 594    }
 595    if (svga->curr.framebuffer.zsbuf)
 596       svga_mark_surface_dirty(svga->curr.framebuffer.zsbuf);
 597 }
 598
 599
 600 /**
 601  * Progagate any changes from surfaces to texture.
 602  * pipe is optional context to inline the blit command in.
 603  */
 604 void
 605 svga_propagate_surface(struct svga_context *svga, struct pipe_surface *surf)
 606 {
 607    struct svga_surface *s = svga_surface(surf);
 608    struct svga_texture *tex = svga_texture(surf->texture);
 609    struct svga_screen *ss = svga_screen(surf->texture->screen);
 610    unsigned zslice, layer;
 611    unsigned nlayers = 1;
 612    unsigned i;
 613
 614    if (!s->dirty)
 615       return;
 616
 617    SVGA_STATS_TIME_PUSH(ss->sws, SVGA_STATS_TIME_PROPAGATESURFACE);
 618
 619    if (surf->texture->target == PIPE_TEXTURE_CUBE) {
 620       zslice = 0;
 621       layer = surf->u.tex.first_layer;
 622    }
 623    else if (surf->texture->target == PIPE_TEXTURE_1D_ARRAY ||
 624             surf->texture->target == PIPE_TEXTURE_2D_ARRAY) {
 625       zslice = 0;
 626       layer = surf->u.tex.first_layer;
 627       nlayers = surf->u.tex.last_layer - surf->u.tex.first_layer + 1;
 628    }
 629    else {
 630       zslice = surf->u.tex.first_layer;
 631       layer = 0;
 632    }
 633
 634    s->dirty = FALSE;
 635    ss->texture_timestamp++;
 636    svga_age_texture_view(tex, surf->u.tex.level);
 637
 638    if (s->handle != tex->handle) {
 639       SVGA_DBG(DEBUG_VIEWS,
 640                "svga: Surface propagate: tex %p, level %u, from %p\n",
 641                tex, surf->u.tex.level, surf);
 642       for (i = 0; i < nlayers; i++) {
 643          svga_texture_copy_handle(svga,
 644                                   s->handle, 0, 0, 0, s->real_level,
 645                                   s->real_layer + i,
 646                                   tex->handle, 0, 0, zslice, surf->u.tex.level,
 647                                   layer + i,
 648                                   u_minify(tex->b.b.width0, surf->u.tex.level),
 649                                   u_minify(tex->b.b.height0, surf->u.tex.level),
 650                                   1);
 651          svga_define_texture_level(tex, layer + i, surf->u.tex.level);
 652       }
 653    }
 654
 655    SVGA_STATS_TIME_POP(ss->sws);
 656 }
 657
 658
 659 /**
 660  * Check if we should call svga_propagate_surface on the surface.
 661  */
 662 boolean
 663 svga_surface_needs_propagation(const struct pipe_surface *surf)
 664 {
 665    const struct svga_surface *s = svga_surface_const(surf);
 666    struct svga_texture *tex = svga_texture(surf->texture);
 667
 668    return s->dirty && s->handle != tex->handle;
 669 }
 670
 671
 672 static void
 673 svga_get_sample_position(struct pipe_context *context,
 674                          unsigned sample_count, unsigned sample_index,
 675                          float *pos_out)
 676 {
 677    /* We can't actually query the device to learn the sample positions.
 678     * These were grabbed from nvidia's driver.
 679     */
 680    static const float pos1[1][2] = {
 681       { 0.5, 0.5 }
 682    };
 683    static const float pos4[4][2] = {
 684       { 0.375000, 0.125000 },
 685       { 0.875000, 0.375000 },
 686       { 0.125000, 0.625000 },
 687       { 0.625000, 0.875000 }
 688    };
 689    static const float pos8[8][2] = {
 690       { 0.562500, 0.312500 },
 691       { 0.437500, 0.687500 },
 692       { 0.812500, 0.562500 },
 693       { 0.312500, 0.187500 },
 694       { 0.187500, 0.812500 },
 695       { 0.062500, 0.437500 },
 696       { 0.687500, 0.937500 },
 697       { 0.937500, 0.062500 }
 698    };
 699    static const float pos16[16][2] = {
 700       { 0.187500, 0.062500 },
 701       { 0.437500, 0.187500 },
 702       { 0.062500, 0.312500 },
 703       { 0.312500, 0.437500 },
 704       { 0.687500, 0.062500 },
 705       { 0.937500, 0.187500 },
 706       { 0.562500, 0.312500 },
 707       { 0.812500, 0.437500 },
 708       { 0.187500, 0.562500 },
 709       { 0.437500, 0.687500 },
 710       { 0.062500, 0.812500 },
 711       { 0.312500, 0.937500 },
 712       { 0.687500, 0.562500 },
 713       { 0.937500, 0.687500 },
 714       { 0.562500, 0.812500 },
 715       { 0.812500, 0.937500 }
 716    };
 717    const float (*positions)[2];
 718
 719    switch (sample_count) {
 720    case 4:
 721       positions = pos4;
 722       break;
 723    case 8:
 724       positions = pos8;
 725       break;
 726    case 16:
 727       positions = pos16;
 728       break;
 729    default:
 730       positions = pos1;
 731    }
 732
 733    pos_out[0] = positions[sample_index][0];
 734    pos_out[1] = positions[sample_index][1];
 735 }
 736
 737
 738 void
 739 svga_init_surface_functions(struct svga_context *svga)
 740 {
 741    svga->pipe.create_surface = svga_create_surface;
 742    svga->pipe.surface_destroy = svga_surface_destroy;
 743    svga->pipe.get_sample_position = svga_get_sample_position;
 744 }