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 /* A helper function to sync up the two surface handles.
 107  */
 108 static void
 109 svga_texture_copy_handle_resource(struct svga_context *svga,
 110                                   struct svga_texture *src_tex,
 111                                   struct svga_winsys_surface *dst,
 112                                   unsigned int numMipLevels,
 113                                   unsigned int numLayers,
 114                                   int zslice_pick,
 115                                   unsigned int mipoffset,
 116                                   unsigned int layeroffset)
 117 {
 118    unsigned int i, j;
 119    unsigned int zoffset = 0;
 120
 121    /* A negative zslice_pick implies zoffset at 0, and depth to copy is
 122     * from the depth of the texture at the particular mipmap level.
 123     */
 124    if (zslice_pick >= 0)
 125       zoffset = zslice_pick;
 126
 127    for (i = 0; i < numMipLevels; i++) {
 128       unsigned int miplevel = i + mipoffset;
 129
 130       for (j = 0; j < numLayers; j++) {
 131          if (svga_is_texture_level_defined(src_tex, j+layeroffset, miplevel)) {
 132             unsigned depth = (zslice_pick < 0 ?
 133                               u_minify(src_tex->b.b.depth0, miplevel) : 1);
 134
 135             svga_texture_copy_handle(svga,
 136                                      src_tex->handle,
 137                                      0, 0, zoffset,
 138                                      miplevel,
 139                                      j + layeroffset,
 140                                      dst, 0, 0, 0, i, j,
 141                                      u_minify(src_tex->b.b.width0, miplevel),
 142                                      u_minify(src_tex->b.b.height0, miplevel),
 143                                      depth);
 144          }
 145       }
 146    }
 147 }
 148
 149
 150 struct svga_winsys_surface *
 151 svga_texture_view_surface(struct svga_context *svga,
 152                           struct svga_texture *tex,
 153                           unsigned bind_flags,
 154                           SVGA3dSurfaceAllFlags flags,
 155                           SVGA3dSurfaceFormat format,
 156                           unsigned start_mip,
 157                           unsigned num_mip,
 158                           int layer_pick,
 159                           unsigned num_layers,
 160                           int zslice_pick,
 161                           boolean cacheable,
 162                           struct svga_host_surface_cache_key *key) /* OUT */
 163 {
 164    struct svga_screen *ss = svga_screen(svga->pipe.screen);
 165    struct svga_winsys_surface *handle = NULL;
 166    boolean validated;
 167    boolean needCopyResource;
 168
 169    SVGA_DBG(DEBUG_PERF,
 170             "svga: Create surface view: layer %d zslice %d mips %d..%d\n",
 171             layer_pick, zslice_pick, start_mip, start_mip+num_mip-1);
 172
 173    SVGA_STATS_TIME_PUSH(ss->sws, SVGA_STATS_TIME_EMULATESURFACEVIEW);
 174
 175    key->flags = flags;
 176    key->format = format;
 177    key->numMipLevels = num_mip;
 178    key->size.width = u_minify(tex->b.b.width0, start_mip);
 179    key->size.height = u_minify(tex->b.b.height0, start_mip);
 180    key->size.depth = zslice_pick < 0 ? u_minify(tex->b.b.depth0, start_mip) : 1;
 181    key->cachable = 1;
 182    key->arraySize = 1;
 183    key->numFaces = 1;
 184
 185    /* single sample surface can be treated as non-multisamples surface */
 186    key->sampleCount = tex->b.b.nr_samples > 1 ? tex->b.b.nr_samples : 0;
 187
 188    if (key->sampleCount > 1) {
 189       key->flags |= SVGA3D_SURFACE_MASKABLE_ANTIALIAS;
 190    }
 191
 192    if (tex->b.b.target == PIPE_TEXTURE_CUBE && layer_pick < 0) {
 193       key->flags |= SVGA3D_SURFACE_CUBEMAP;
 194       key->numFaces = 6;
 195    } else if (tex->b.b.target == PIPE_TEXTURE_1D_ARRAY ||
 196               tex->b.b.target == PIPE_TEXTURE_2D_ARRAY) {
 197       key->arraySize = num_layers;
 198    }
 199
 200    if (key->format == SVGA3D_FORMAT_INVALID) {
 201       key->cachable = 0;
 202       goto done;
 203    }
 204
 205    if (cacheable && tex->backed_handle &&
 206        memcmp(key, &tex->backed_key, sizeof *key) == 0) {
 207       handle = tex->backed_handle;
 208       needCopyResource = tex->backed_age < tex->age;
 209    } else {
 210       SVGA_DBG(DEBUG_DMA, "surface_create for texture view\n");
 211       handle = svga_screen_surface_create(ss, bind_flags, PIPE_USAGE_DEFAULT,
 212                                           &validated, key);
 213       needCopyResource = TRUE;
 214
 215       if (cacheable && !tex->backed_handle) {
 216          tex->backed_handle = handle;
 217          memcpy(&tex->backed_key, key, sizeof *key);
 218       }
 219    }
 220
 221    if (!handle) {
 222       key->cachable = 0;
 223       goto done;
 224    }
 225
 226    SVGA_DBG(DEBUG_DMA, " --> got sid %p (texture view)\n", handle);
 227
 228    if (layer_pick < 0)
 229       layer_pick = 0;
 230
 231    if (needCopyResource) {
 232       svga_texture_copy_handle_resource(svga, tex, handle,
 233                                         key->numMipLevels,
 234                                         key->numFaces * key->arraySize,
 235                                         zslice_pick, start_mip, layer_pick);
 236       tex->backed_age = tex->age;
 237    }
 238
 239 done:
 240    SVGA_STATS_TIME_POP(ss->sws);
 241
 242    return handle;
 243 }
 244
 245
 246 /**
 247  * A helper function to create a surface view.
 248  * The view boolean flag specifies whether svga_texture_view_surface()
 249  * will be called to create a cloned surface and resource for the view.
 250  */
 251 static struct pipe_surface *
 252 svga_create_surface_view(struct pipe_context *pipe,
 253                          struct pipe_resource *pt,
 254                          const struct pipe_surface *surf_tmpl,
 255                          boolean view)
 256 {
 257    struct svga_context *svga = svga_context(pipe);
 258    struct svga_texture *tex = svga_texture(pt);
 259    struct pipe_screen *screen = pipe->screen;
 260    struct svga_screen *ss = svga_screen(screen);
 261    struct svga_surface *s;
 262    unsigned layer, zslice, bind;
 263    unsigned nlayers = 1;
 264    SVGA3dSurfaceAllFlags flags = 0;
 265    SVGA3dSurfaceFormat format;
 266    struct pipe_surface *retVal = NULL;
 267
 268    s = CALLOC_STRUCT(svga_surface);
 269    if (!s)
 270       return NULL;
 271
 272    SVGA_STATS_TIME_PUSH(ss->sws, SVGA_STATS_TIME_CREATESURFACEVIEW);
 273
 274    if (pt->target == PIPE_TEXTURE_CUBE) {
 275       layer = surf_tmpl->u.tex.first_layer;
 276       zslice = 0;
 277    }
 278    else if (pt->target == PIPE_TEXTURE_1D_ARRAY ||
 279             pt->target == PIPE_TEXTURE_2D_ARRAY ||
 280             pt->target == PIPE_TEXTURE_CUBE_ARRAY) {
 281       layer = surf_tmpl->u.tex.first_layer;
 282       zslice = 0;
 283       nlayers = surf_tmpl->u.tex.last_layer - surf_tmpl->u.tex.first_layer + 1;
 284    }
 285    else {
 286       layer = 0;
 287       zslice = surf_tmpl->u.tex.first_layer;
 288    }
 289
 290    pipe_reference_init(&s->base.reference, 1);
 291    pipe_resource_reference(&s->base.texture, pt);
 292    s->base.context = pipe;
 293    s->base.format = surf_tmpl->format;
 294    s->base.width = u_minify(pt->width0, surf_tmpl->u.tex.level);
 295    s->base.height = u_minify(pt->height0, surf_tmpl->u.tex.level);
 296    s->base.u.tex.level = surf_tmpl->u.tex.level;
 297    s->base.u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 298    s->base.u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 299    s->view_id = SVGA3D_INVALID_ID;
 300
 301    s->backed = NULL;
 302
 303    if (util_format_is_depth_or_stencil(surf_tmpl->format)) {
 304       flags = SVGA3D_SURFACE_HINT_DEPTHSTENCIL |
 305               SVGA3D_SURFACE_BIND_DEPTH_STENCIL;
 306       bind = PIPE_BIND_DEPTH_STENCIL;
 307    }
 308    else {
 309       flags = SVGA3D_SURFACE_HINT_RENDERTARGET |
 310               SVGA3D_SURFACE_BIND_RENDER_TARGET;
 311       bind = PIPE_BIND_RENDER_TARGET;
 312    }
 313
 314    if (tex->imported) {
 315       /* imported resource (a window) */
 316       format = tex->key.format;
 317       if (util_format_is_srgb(surf_tmpl->format)) {
 318          /* sRGB rendering to window */
 319          format = svga_linear_to_srgb(format);
 320       }
 321    }
 322    else {
 323       format = svga_translate_format(ss, surf_tmpl->format, bind);
 324    }
 325
 326    assert(format != SVGA3D_FORMAT_INVALID);
 327
 328    if (view) {
 329       SVGA_DBG(DEBUG_VIEWS,
 330                "New backed surface view: resource %p, level %u layer %u z %u, %p\n",
 331                pt, surf_tmpl->u.tex.level, layer, zslice, s);
 332
 333       if (svga_have_vgpu10(svga)) {
 334          switch (pt->target) {
 335          case PIPE_TEXTURE_1D:
 336             flags |= SVGA3D_SURFACE_1D;
 337             break;
 338          case PIPE_TEXTURE_1D_ARRAY:
 339             flags |= SVGA3D_SURFACE_1D | SVGA3D_SURFACE_ARRAY;
 340             break;
 341          case PIPE_TEXTURE_2D_ARRAY:
 342             flags |= SVGA3D_SURFACE_ARRAY;
 343             break;
 344          case PIPE_TEXTURE_3D:
 345             flags |= SVGA3D_SURFACE_VOLUME;
 346             break;
 347          case PIPE_TEXTURE_CUBE:
 348             if (nlayers == 6)
 349                flags |= SVGA3D_SURFACE_CUBEMAP;
 350             break;
 351          case PIPE_TEXTURE_CUBE_ARRAY:
 352             flags |= SVGA3D_SURFACE_CUBEMAP | SVGA3D_SURFACE_ARRAY;
 353             break;
 354          default:
 355             break;
 356          }
 357       }
 358
 359       /* When we clone the surface view resource, use the format used in
 360        * the creation of the original resource.
 361        */
 362       s->handle = svga_texture_view_surface(svga, tex, bind, flags,
 363                                             tex->key.format,
 364                                             surf_tmpl->u.tex.level, 1,
 365                                             layer, nlayers, zslice,
 366                                             TRUE, &s->key);
 367       if (!s->handle) {
 368          FREE(s);
 369          goto done;
 370       }
 371
 372       s->key.format = format;
 373       s->real_layer = 0;
 374       s->real_level = 0;
 375       s->real_zslice = 0;
 376    } else {
 377       SVGA_DBG(DEBUG_VIEWS,
 378                "New surface view: resource %p, level %u, layer %u, z %u, %p\n",
 379                pt, surf_tmpl->u.tex.level, layer, zslice, s);
 380
 381       memset(&s->key, 0, sizeof s->key);
 382       s->key.format = format;
 383       s->handle = tex->handle;
 384       s->real_layer = layer;
 385       s->real_zslice = zslice;
 386       s->real_level = surf_tmpl->u.tex.level;
 387    }
 388
 389    svga->hud.num_surface_views++;
 390    retVal = &s->base;
 391
 392 done:
 393    SVGA_STATS_TIME_POP(ss->sws);
 394    return retVal;
 395 }
 396
 397
 398 static struct pipe_surface *
 399 svga_create_surface(struct pipe_context *pipe,
 400                     struct pipe_resource *pt,
 401                     const struct pipe_surface *surf_tmpl)
 402 {
 403    struct svga_context *svga = svga_context(pipe);
 404    struct pipe_screen *screen = pipe->screen;
 405    struct pipe_surface *surf = NULL;
 406    boolean view = FALSE;
 407
 408    SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_CREATESURFACE);
 409
 410    if (svga_screen(screen)->debug.force_surface_view)
 411       view = TRUE;
 412
 413    if (surf_tmpl->u.tex.level != 0 &&
 414        svga_screen(screen)->debug.force_level_surface_view)
 415       view = TRUE;
 416
 417    if (pt->target == PIPE_TEXTURE_3D)
 418       view = TRUE;
 419
 420    if (svga_have_vgpu10(svga) || svga_screen(screen)->debug.no_surface_view)
 421       view = FALSE;
 422
 423    surf = svga_create_surface_view(pipe, pt, surf_tmpl, view);
 424
 425    SVGA_STATS_TIME_POP(svga_sws(svga));
 426
 427    return surf;
 428 }
 429
 430
 431 /**
 432  * Clone the surface view and its associated resource.
 433  */
 434 static struct svga_surface *
 435 create_backed_surface_view(struct svga_context *svga, struct svga_surface *s)
 436 {
 437    struct svga_texture *tex = svga_texture(s->base.texture);
 438
 439    if (!s->backed) {
 440       struct pipe_surface *backed_view;
 441
 442       SVGA_STATS_TIME_PUSH(svga_sws(svga),
 443                            SVGA_STATS_TIME_CREATEBACKEDSURFACEVIEW);
 444
 445       backed_view = svga_create_surface_view(&svga->pipe,
 446                                              &tex->b.b,
 447                                              &s->base,
 448                                              TRUE);
 449       if (!backed_view)
 450          goto done;
 451
 452       s->backed = svga_surface(backed_view);
 453
 454       SVGA_STATS_TIME_POP(svga_sws(svga));
 455    }
 456    else if (s->backed->age < tex->age) {
 457       /*
 458        * There is already an existing backing surface, but we still need to
 459        * sync the backing resource if the original resource has been modified
 460        * since the last copy.
 461        */
 462       struct svga_surface *bs = s->backed;
 463       unsigned int layer, zslice;
 464
 465       assert(bs->handle);
 466
 467       switch (tex->b.b.target) {
 468       case PIPE_TEXTURE_CUBE:
 469       case PIPE_TEXTURE_1D_ARRAY:
 470       case PIPE_TEXTURE_2D_ARRAY:
 471          layer = s->base.u.tex.first_layer;
 472          zslice = 0;
 473          break;
 474       default:
 475          layer = 0;
 476          zslice = s->base.u.tex.first_layer;
 477       }
 478
 479       svga_texture_copy_handle_resource(svga, tex, bs->handle,
 480                                         bs->key.numMipLevels,
 481                                         bs->key.numFaces * bs->key.arraySize,
 482                                         zslice, s->base.u.tex.level, layer);
 483    }
 484
 485    svga_mark_surface_dirty(&s->backed->base);
 486    s->backed->age = tex->age;
 487
 488 done:
 489    return s->backed;
 490 }
 491
 492 /**
 493  * Create a DX RenderTarget/DepthStencil View for the given surface,
 494  * if needed.
 495  */
 496 struct pipe_surface *
 497 svga_validate_surface_view(struct svga_context *svga, struct svga_surface *s)
 498 {
 499    enum pipe_error ret = PIPE_OK;
 500    enum pipe_shader_type shader;
 501
 502    assert(svga_have_vgpu10(svga));
 503    assert(s);
 504
 505    SVGA_STATS_TIME_PUSH(svga_sws(svga),
 506                         SVGA_STATS_TIME_VALIDATESURFACEVIEW);
 507
 508    /**
 509     * DX spec explicitly specifies that no resource can be bound to a render
 510     * target view and a shader resource view simultanously.
 511     * So first check if the resource bound to this surface view collides with
 512     * a sampler view. If so, then we will clone this surface view and its
 513     * associated resource. We will then use the cloned surface view for
 514     * render target.
 515     */
 516    for (shader = PIPE_SHADER_VERTEX; shader <= PIPE_SHADER_GEOMETRY; shader++) {
 517       if (svga_check_sampler_view_resource_collision(svga, s->handle, shader)) {
 518          SVGA_DBG(DEBUG_VIEWS,
 519                   "same resource used in shaderResource and renderTarget 0x%x\n",
 520                   s->handle);
 521          s = create_backed_surface_view(svga, s);
 522
 523          if (s)
 524             svga->state.hw_draw.has_backed_views = TRUE;
 525
 526          /* s may be null here if the function failed */
 527          break;
 528       }
 529    }
 530
 531    if (s && s->view_id == SVGA3D_INVALID_ID) {
 532       SVGA3dResourceType resType;
 533       SVGA3dRenderTargetViewDesc desc;
 534       struct svga_texture *stex = svga_texture(s->base.texture);
 535
 536       if (stex->validated == FALSE) {
 537          assert(stex->handle);
 538
 539          /* We are about to render into a surface that has not been validated.
 540           * First invalidate the surface so that the device does not
 541           * need to update the host-side copy with the invalid
 542           * content when the associated mob is first bound to the surface.
 543           */
 544          if (svga->swc->surface_invalidate(svga->swc, stex->handle) != PIPE_OK) {
 545             svga_context_flush(svga, NULL);
 546             ret = svga->swc->surface_invalidate(svga->swc, stex->handle);
 547             assert(ret == PIPE_OK);
 548          }
 549          stex->validated = TRUE;
 550       }
 551
 552       desc.tex.mipSlice = s->real_level;
 553       desc.tex.firstArraySlice = s->real_layer + s->real_zslice;
 554       desc.tex.arraySize =
 555          s->base.u.tex.last_layer - s->base.u.tex.first_layer + 1;
 556
 557       s->view_id = util_bitmask_add(svga->surface_view_id_bm);
 558
 559       resType = svga_resource_type(s->base.texture->target);
 560
 561       if (util_format_is_depth_or_stencil(s->base.format)) {
 562          ret = SVGA3D_vgpu10_DefineDepthStencilView(svga->swc,
 563                                                     s->view_id,
 564                                                     s->handle,
 565                                                     s->key.format,
 566                                                     resType,
 567                                                     &desc);
 568       }
 569       else {
 570          SVGA3dSurfaceFormat view_format = s->key.format;
 571          const struct svga_texture *stex = svga_texture(s->base.texture);
 572
 573          /* Can't create RGBA render target view of a RGBX surface so adjust
 574           * the view format.  We do something similar for texture samplers in
 575           * svga_validate_pipe_sampler_view().
 576           */
 577          if (view_format == SVGA3D_B8G8R8A8_UNORM &&
 578              (stex->key.format == SVGA3D_B8G8R8X8_UNORM ||
 579               stex->key.format == SVGA3D_B8G8R8X8_TYPELESS)) {
 580             view_format = SVGA3D_B8G8R8X8_UNORM;
 581          }
 582
 583          ret = SVGA3D_vgpu10_DefineRenderTargetView(svga->swc,
 584                                                     s->view_id,
 585                                                     s->handle,
 586                                                     view_format,
 587                                                     resType,
 588                                                     &desc);
 589       }
 590
 591       if (ret != PIPE_OK) {
 592          util_bitmask_clear(svga->surface_view_id_bm, s->view_id);
 593          s->view_id = SVGA3D_INVALID_ID;
 594          s = NULL;
 595       }
 596    }
 597
 598    SVGA_STATS_TIME_POP(svga_sws(svga));
 599
 600    return s ? &s->base : NULL;
 601 }
 602
 603
 604
 605 static void
 606 svga_surface_destroy(struct pipe_context *pipe,
 607                      struct pipe_surface *surf)
 608 {
 609    struct svga_context *svga = svga_context(pipe);
 610    struct svga_surface *s = svga_surface(surf);
 611    struct svga_texture *t = svga_texture(surf->texture);
 612    struct svga_screen *ss = svga_screen(surf->texture->screen);
 613    enum pipe_error ret = PIPE_OK;
 614
 615    SVGA_STATS_TIME_PUSH(ss->sws, SVGA_STATS_TIME_DESTROYSURFACE);
 616
 617    /* Destroy the backed view surface if it exists */
 618    if (s->backed) {
 619       svga_surface_destroy(pipe, &s->backed->base);
 620       s->backed = NULL;
 621    }
 622
 623    /* Destroy the surface handle if this is a backed handle and
 624     * it is not being cached in the texture.
 625     */
 626    if (s->handle != t->handle && s->handle != t->backed_handle) {
 627       SVGA_DBG(DEBUG_DMA, "unref sid %p (tex surface)\n", s->handle);
 628       svga_screen_surface_destroy(ss, &s->key, &s->handle);
 629    }
 630
 631    if (s->view_id != SVGA3D_INVALID_ID) {
 632       unsigned try;
 633
 634       /* The SVGA3D device will generate a device error if the
 635        * render target view or depth stencil view is destroyed from
 636        * a context other than the one it was created with.
 637        * Similar to shader resource view, in this case, we will skip
 638        * the destroy for now.
 639        */
 640       if (surf->context != pipe) {
 641          _debug_printf("context mismatch in %s\n", __func__);
 642       }
 643       else {
 644          assert(svga_have_vgpu10(svga));
 645          for (try = 0; try < 2; try++) {
 646             if (util_format_is_depth_or_stencil(s->base.format)) {
 647                ret = SVGA3D_vgpu10_DestroyDepthStencilView(svga->swc, s->view_id);
 648             }
 649             else {
 650                ret = SVGA3D_vgpu10_DestroyRenderTargetView(svga->swc, s->view_id);
 651             }
 652             if (ret == PIPE_OK)
 653                break;
 654             svga_context_flush(svga, NULL);
 655          }
 656          assert(ret == PIPE_OK);
 657          util_bitmask_clear(svga->surface_view_id_bm, s->view_id);
 658       }
 659    }
 660
 661    pipe_resource_reference(&surf->texture, NULL);
 662    FREE(surf);
 663
 664    svga->hud.num_surface_views--;
 665    SVGA_STATS_TIME_POP(ss->sws);
 666 }
 667
 668
 669 static void
 670 svga_mark_surface_dirty(struct pipe_surface *surf)
 671 {
 672    struct svga_surface *s = svga_surface(surf);
 673    struct svga_texture *tex = svga_texture(surf->texture);
 674
 675    if (!s->dirty) {
 676       s->dirty = TRUE;
 677
 678       if (s->handle == tex->handle) {
 679          /* hmm so 3d textures always have all their slices marked ? */
 680          svga_define_texture_level(tex, surf->u.tex.first_layer,
 681                                    surf->u.tex.level);
 682       }
 683       else {
 684          /* this will happen later in svga_propagate_surface */
 685       }
 686    }
 687
 688    /* Increment the view_age and texture age for this surface's mipmap
 689     * level so that any sampler views into the texture are re-validated too.
 690     * Note: we age the texture for backed surface view only when the
 691     *       backed surface is propagated to the original surface.
 692     */
 693    if (s->handle == tex->handle)
 694       svga_age_texture_view(tex, surf->u.tex.level);
 695 }
 696
 697
 698 void
 699 svga_mark_surfaces_dirty(struct svga_context *svga)
 700 {
 701    unsigned i;
 702    struct svga_hw_clear_state *hw = &svga->state.hw_clear;
 703
 704    if (svga_have_vgpu10(svga)) {
 705
 706       /* For VGPU10, mark the dirty bit in the rendertarget/depth stencil view surface.
 707        * This surface can be the backed surface.
 708        */
 709       for (i = 0; i < hw->num_rendertargets; i++) {
 710          if (hw->rtv[i])
 711             svga_mark_surface_dirty(hw->rtv[i]);
 712       }
 713       if (hw->dsv)
 714          svga_mark_surface_dirty(hw->dsv);
 715    } else {
 716       for (i = 0; i < svga->curr.framebuffer.nr_cbufs; i++) {
 717          if (svga->curr.framebuffer.cbufs[i])
 718             svga_mark_surface_dirty(svga->curr.framebuffer.cbufs[i]);
 719       }
 720       if (svga->curr.framebuffer.zsbuf)
 721          svga_mark_surface_dirty(svga->curr.framebuffer.zsbuf);
 722    }
 723 }
 724
 725
 726 /**
 727  * Progagate any changes from surfaces to texture.
 728  * pipe is optional context to inline the blit command in.
 729  */
 730 void
 731 svga_propagate_surface(struct svga_context *svga, struct pipe_surface *surf,
 732                        boolean reset)
 733 {
 734    struct svga_surface *s = svga_surface(surf);
 735    struct svga_texture *tex = svga_texture(surf->texture);
 736    struct svga_screen *ss = svga_screen(surf->texture->screen);
 737
 738    if (!s->dirty)
 739       return;
 740
 741    SVGA_STATS_TIME_PUSH(ss->sws, SVGA_STATS_TIME_PROPAGATESURFACE);
 742
 743    /* Reset the dirty flag if specified. This is to ensure that
 744     * the dirty flag will not be reset and stay unset when the backing
 745     * surface is still being bound and rendered to.
 746     * The reset flag will be set to TRUE when the surface is propagated
 747     * and will be unbound.
 748     */
 749    s->dirty = !reset;
 750
 751    ss->texture_timestamp++;
 752    svga_age_texture_view(tex, surf->u.tex.level);
 753
 754    if (s->handle != tex->handle) {
 755       unsigned zslice, layer;
 756       unsigned nlayers = 1;
 757       unsigned i;
 758
 759       if (surf->texture->target == PIPE_TEXTURE_CUBE) {
 760          zslice = 0;
 761          layer = surf->u.tex.first_layer;
 762       }
 763       else if (surf->texture->target == PIPE_TEXTURE_1D_ARRAY ||
 764                surf->texture->target == PIPE_TEXTURE_2D_ARRAY) {
 765          zslice = 0;
 766          layer = surf->u.tex.first_layer;
 767          nlayers = surf->u.tex.last_layer - surf->u.tex.first_layer + 1;
 768       }
 769       else {
 770          zslice = surf->u.tex.first_layer;
 771          layer = 0;
 772       }
 773
 774       SVGA_DBG(DEBUG_VIEWS,
 775                "Propagate surface %p to resource %p, level %u\n",
 776                surf, tex, surf->u.tex.level);
 777       for (i = 0; i < nlayers; i++) {
 778          svga_texture_copy_handle(svga,
 779                                   s->handle, 0, 0, 0, s->real_level,
 780                                   s->real_layer + i,
 781                                   tex->handle, 0, 0, zslice, surf->u.tex.level,
 782                                   layer + i,
 783                                   u_minify(tex->b.b.width0, surf->u.tex.level),
 784                                   u_minify(tex->b.b.height0, surf->u.tex.level),
 785                                   1);
 786          svga_define_texture_level(tex, layer + i, surf->u.tex.level);
 787       }
 788
 789       /* Sync the surface view age with the texture age */
 790       s->age = tex->age;
 791
 792       /* If this backed surface is cached in the texture,
 793        * update the backed age as well.
 794        */
 795       if (tex->backed_handle == s->handle) {
 796          tex->backed_age = tex->age;
 797       }
 798    }
 799
 800    SVGA_STATS_TIME_POP(ss->sws);
 801 }
 802
 803
 804 /**
 805  * If any of the render targets are in backing texture views, propagate any
 806  * changes to them back to the original texture.
 807  */
 808 void
 809 svga_propagate_rendertargets(struct svga_context *svga)
 810 {
 811    unsigned i;
 812
 813    /* Early exit if there is no backing texture views in use */
 814    if (!svga->state.hw_draw.has_backed_views)
 815       return;
 816
 817    /* Note that we examine the svga->state.hw_draw.framebuffer surfaces,
 818     * not the svga->curr.framebuffer surfaces, because it's the former
 819     * surfaces which may be backing surface views (the actual render targets).
 820     */
 821    for (i = 0; i < svga->state.hw_clear.num_rendertargets; i++) {
 822       struct pipe_surface *s = svga->state.hw_clear.rtv[i];
 823       if (s) {
 824          svga_propagate_surface(svga, s, FALSE);
 825       }
 826    }
 827
 828    if (svga->state.hw_clear.dsv) {
 829       svga_propagate_surface(svga, svga->state.hw_clear.dsv, FALSE);
 830    }
 831 }
 832
 833
 834 /**
 835  * Check if we should call svga_propagate_surface on the surface.
 836  */
 837 boolean
 838 svga_surface_needs_propagation(const struct pipe_surface *surf)
 839 {
 840    const struct svga_surface *s = svga_surface_const(surf);
 841    struct svga_texture *tex = svga_texture(surf->texture);
 842
 843    return s->dirty && s->handle != tex->handle;
 844 }
 845
 846
 847 static void
 848 svga_get_sample_position(struct pipe_context *context,
 849                          unsigned sample_count, unsigned sample_index,
 850                          float *pos_out)
 851 {
 852    /* We can't actually query the device to learn the sample positions.
 853     * These were grabbed from nvidia's driver.
 854     */
 855    static const float pos1[1][2] = {
 856       { 0.5, 0.5 }
 857    };
 858    static const float pos4[4][2] = {
 859       { 0.375000, 0.125000 },
 860       { 0.875000, 0.375000 },
 861       { 0.125000, 0.625000 },
 862       { 0.625000, 0.875000 }
 863    };
 864    static const float pos8[8][2] = {
 865       { 0.562500, 0.312500 },
 866       { 0.437500, 0.687500 },
 867       { 0.812500, 0.562500 },
 868       { 0.312500, 0.187500 },
 869       { 0.187500, 0.812500 },
 870       { 0.062500, 0.437500 },
 871       { 0.687500, 0.937500 },
 872       { 0.937500, 0.062500 }
 873    };
 874    static const float pos16[16][2] = {
 875       { 0.187500, 0.062500 },
 876       { 0.437500, 0.187500 },
 877       { 0.062500, 0.312500 },
 878       { 0.312500, 0.437500 },
 879       { 0.687500, 0.062500 },
 880       { 0.937500, 0.187500 },
 881       { 0.562500, 0.312500 },
 882       { 0.812500, 0.437500 },
 883       { 0.187500, 0.562500 },
 884       { 0.437500, 0.687500 },
 885       { 0.062500, 0.812500 },
 886       { 0.312500, 0.937500 },
 887       { 0.687500, 0.562500 },
 888       { 0.937500, 0.687500 },
 889       { 0.562500, 0.812500 },
 890       { 0.812500, 0.937500 }
 891    };
 892    const float (*positions)[2];
 893
 894    switch (sample_count) {
 895    case 4:
 896       positions = pos4;
 897       break;
 898    case 8:
 899       positions = pos8;
 900       break;
 901    case 16:
 902       positions = pos16;
 903       break;
 904    default:
 905       positions = pos1;
 906    }
 907
 908    pos_out[0] = positions[sample_index][0];
 909    pos_out[1] = positions[sample_index][1];
 910 }
 911
 912
 913 void
 914 svga_init_surface_functions(struct svga_context *svga)
 915 {
 916    svga->pipe.create_surface = svga_create_surface;
 917    svga->pipe.surface_destroy = svga_surface_destroy;
 918    svga->pipe.get_sample_position = svga_get_sample_position;
 919 }