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                           SVGA3dSurfaceFlags 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                           struct svga_host_surface_cache_key *key) /* OUT */
 162 {
 163    struct svga_screen *ss = svga_screen(svga->pipe.screen);
 164    struct svga_winsys_surface *handle;
 165    boolean validated;
 166
 167    SVGA_DBG(DEBUG_PERF,
 168             "svga: Create surface view: layer %d zslice %d mips %d..%d\n",
 169             layer_pick, zslice_pick, start_mip, start_mip+num_mip-1);
 170
 171    key->flags = flags;
 172    key->format = format;
 173    key->numMipLevels = num_mip;
 174    key->size.width = u_minify(tex->b.b.width0, start_mip);
 175    key->size.height = u_minify(tex->b.b.height0, start_mip);
 176    key->size.depth = zslice_pick < 0 ? u_minify(tex->b.b.depth0, start_mip) : 1;
 177    key->cachable = 1;
 178    key->arraySize = 1;
 179    key->numFaces = 1;
 180
 181    /* single sample surface can be treated as non-multisamples surface */
 182    key->sampleCount = tex->b.b.nr_samples > 1 ? tex->b.b.nr_samples : 0;
 183
 184    if (key->sampleCount > 1) {
 185       key->flags |= SVGA3D_SURFACE_MASKABLE_ANTIALIAS;
 186    }
 187
 188    if (tex->b.b.target == PIPE_TEXTURE_CUBE && layer_pick < 0) {
 189       key->flags |= SVGA3D_SURFACE_CUBEMAP;
 190       key->numFaces = 6;
 191    } else if (tex->b.b.target == PIPE_TEXTURE_1D_ARRAY ||
 192               tex->b.b.target == PIPE_TEXTURE_2D_ARRAY) {
 193       key->arraySize = num_layers;
 194    }
 195
 196    if (key->format == SVGA3D_FORMAT_INVALID) {
 197       key->cachable = 0;
 198       return NULL;
 199    }
 200
 201    SVGA_DBG(DEBUG_DMA, "surface_create for texture view\n");
 202    handle = svga_screen_surface_create(ss, bind_flags, PIPE_USAGE_DEFAULT,
 203                                        &validated, key);
 204    if (!handle) {
 205       key->cachable = 0;
 206       return NULL;
 207    }
 208
 209    SVGA_DBG(DEBUG_DMA, " --> got sid %p (texture view)\n", handle);
 210
 211    if (layer_pick < 0)
 212       layer_pick = 0;
 213
 214    svga_texture_copy_handle_resource(svga, tex, handle,
 215                                      key->numMipLevels,
 216                                      key->numFaces * key->arraySize,
 217                                      zslice_pick, start_mip, layer_pick);
 218
 219    return handle;
 220 }
 221
 222
 223 /**
 224  * A helper function to create a surface view.
 225  * The view boolean flag specifies whether svga_texture_view_surface()
 226  * will be called to create a cloned surface and resource for the view.
 227  */
 228 static struct pipe_surface *
 229 svga_create_surface_view(struct pipe_context *pipe,
 230                          struct pipe_resource *pt,
 231                          const struct pipe_surface *surf_tmpl,
 232                          boolean view)
 233 {
 234    struct svga_context *svga = svga_context(pipe);
 235    struct svga_texture *tex = svga_texture(pt);
 236    struct pipe_screen *screen = pipe->screen;
 237    struct svga_screen *ss = svga_screen(screen);
 238    struct svga_surface *s;
 239    unsigned layer, zslice, bind;
 240    unsigned nlayers = 1;
 241    SVGA3dSurfaceFlags flags = 0;
 242    SVGA3dSurfaceFormat format;
 243    struct pipe_surface *retVal = NULL;
 244
 245    s = CALLOC_STRUCT(svga_surface);
 246    if (!s)
 247       return NULL;
 248
 249    SVGA_STATS_TIME_PUSH(ss->sws, SVGA_STATS_TIME_CREATESURFACEVIEW);
 250
 251    if (pt->target == PIPE_TEXTURE_CUBE) {
 252       layer = surf_tmpl->u.tex.first_layer;
 253       zslice = 0;
 254    }
 255    else if (pt->target == PIPE_TEXTURE_1D_ARRAY ||
 256             pt->target == PIPE_TEXTURE_2D_ARRAY) {
 257       layer = surf_tmpl->u.tex.first_layer;
 258       zslice = 0;
 259       nlayers = surf_tmpl->u.tex.last_layer - surf_tmpl->u.tex.first_layer + 1;
 260    }
 261    else {
 262       layer = 0;
 263       zslice = surf_tmpl->u.tex.first_layer;
 264    }
 265
 266    pipe_reference_init(&s->base.reference, 1);
 267    pipe_resource_reference(&s->base.texture, pt);
 268    s->base.context = pipe;
 269    s->base.format = surf_tmpl->format;
 270    s->base.width = u_minify(pt->width0, surf_tmpl->u.tex.level);
 271    s->base.height = u_minify(pt->height0, surf_tmpl->u.tex.level);
 272    s->base.u.tex.level = surf_tmpl->u.tex.level;
 273    s->base.u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 274    s->base.u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 275    s->view_id = SVGA3D_INVALID_ID;
 276
 277    s->backed = NULL;
 278
 279    if (util_format_is_depth_or_stencil(surf_tmpl->format)) {
 280       flags = SVGA3D_SURFACE_HINT_DEPTHSTENCIL |
 281               SVGA3D_SURFACE_BIND_DEPTH_STENCIL;
 282       bind = PIPE_BIND_DEPTH_STENCIL;
 283    }
 284    else {
 285       flags = SVGA3D_SURFACE_HINT_RENDERTARGET |
 286               SVGA3D_SURFACE_BIND_RENDER_TARGET;
 287       bind = PIPE_BIND_RENDER_TARGET;
 288    }
 289
 290    if (tex->imported)
 291       format = tex->key.format;
 292    else
 293       format = svga_translate_format(ss, surf_tmpl->format, bind);
 294
 295    assert(format != SVGA3D_FORMAT_INVALID);
 296
 297    if (view) {
 298       SVGA_DBG(DEBUG_VIEWS, "svga: Surface view: yes %p, level %u layer %u z %u, %p\n",
 299                pt, surf_tmpl->u.tex.level, layer, zslice, s);
 300
 301       if (svga_have_vgpu10(svga)) {
 302          switch (pt->target) {
 303          case PIPE_TEXTURE_1D:
 304             flags |= SVGA3D_SURFACE_1D;
 305             break;
 306          case PIPE_TEXTURE_1D_ARRAY:
 307             flags |= SVGA3D_SURFACE_1D | SVGA3D_SURFACE_ARRAY;
 308             break;
 309          case PIPE_TEXTURE_2D_ARRAY:
 310             flags |= SVGA3D_SURFACE_ARRAY;
 311             break;
 312          case PIPE_TEXTURE_3D:
 313             flags |= SVGA3D_SURFACE_VOLUME;
 314             break;
 315          case PIPE_TEXTURE_CUBE:
 316             if (nlayers == 6)
 317                flags |= SVGA3D_SURFACE_CUBEMAP;
 318             break;
 319          default:
 320             break;
 321          }
 322       }
 323
 324       /* When we clone the surface view resource, use the format used in
 325        * the creation of the original resource.
 326        */
 327       s->handle = svga_texture_view_surface(svga, tex, bind, flags,
 328                                             tex->key.format,
 329                                             surf_tmpl->u.tex.level, 1,
 330                                             layer, nlayers, zslice, &s->key);
 331       if (!s->handle) {
 332          FREE(s);
 333          goto done;
 334       }
 335
 336       s->key.format = format;
 337       s->real_layer = 0;
 338       s->real_level = 0;
 339       s->real_zslice = 0;
 340    } else {
 341       SVGA_DBG(DEBUG_VIEWS,
 342                "svga: Surface view: no %p, level %u, layer %u, z %u, %p\n",
 343                pt, surf_tmpl->u.tex.level, layer, zslice, s);
 344
 345       memset(&s->key, 0, sizeof s->key);
 346       s->key.format = format;
 347       s->handle = tex->handle;
 348       s->real_layer = layer;
 349       s->real_zslice = zslice;
 350       s->real_level = surf_tmpl->u.tex.level;
 351    }
 352
 353    svga->hud.num_surface_views++;
 354    retVal = &s->base;
 355
 356 done:
 357    SVGA_STATS_TIME_POP(ss->sws);
 358    return retVal;
 359 }
 360
 361
 362 static struct pipe_surface *
 363 svga_create_surface(struct pipe_context *pipe,
 364                     struct pipe_resource *pt,
 365                     const struct pipe_surface *surf_tmpl)
 366 {
 367    struct svga_context *svga = svga_context(pipe);
 368    struct pipe_screen *screen = pipe->screen;
 369    struct pipe_surface *surf = NULL;
 370    boolean view = FALSE;
 371
 372    SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_CREATESURFACE);
 373
 374    if (svga_screen(screen)->debug.force_surface_view)
 375       view = TRUE;
 376
 377    if (surf_tmpl->u.tex.level != 0 &&
 378        svga_screen(screen)->debug.force_level_surface_view)
 379       view = TRUE;
 380
 381    if (pt->target == PIPE_TEXTURE_3D)
 382       view = TRUE;
 383
 384    if (svga_have_vgpu10(svga) || svga_screen(screen)->debug.no_surface_view)
 385       view = FALSE;
 386
 387    surf = svga_create_surface_view(pipe, pt, surf_tmpl, view);
 388
 389    SVGA_STATS_TIME_POP(svga_sws(svga));
 390
 391    return surf;
 392 }
 393
 394
 395 /**
 396  * Clone the surface view and its associated resource.
 397  */
 398 static struct svga_surface *
 399 create_backed_surface_view(struct svga_context *svga, struct svga_surface *s)
 400 {
 401    struct svga_texture *tex = svga_texture(s->base.texture);
 402
 403    SVGA_STATS_TIME_PUSH(svga_sws(svga),
 404                         SVGA_STATS_TIME_CREATEBACKEDSURFACEVIEW);
 405
 406    if (!s->backed) {
 407       struct pipe_surface *backed_view;
 408
 409       backed_view = svga_create_surface_view(&svga->pipe,
 410                                              &tex->b.b,
 411                                              &s->base,
 412                                              TRUE);
 413       if (!backed_view)
 414          return NULL;
 415
 416       s->backed = svga_surface(backed_view);
 417    }
 418    else {
 419       /*
 420        * There is already an existing backing surface, but we still need to
 421        * sync the handles.
 422        */
 423       struct svga_surface *bs = s->backed;
 424       unsigned int layer, zslice;
 425
 426       assert(bs->handle);
 427
 428       switch (tex->b.b.target) {
 429       case PIPE_TEXTURE_CUBE:
 430       case PIPE_TEXTURE_1D_ARRAY:
 431       case PIPE_TEXTURE_2D_ARRAY:
 432          layer = s->base.u.tex.first_layer;
 433          zslice = 0;
 434          break;
 435       default:
 436          layer = 0;
 437          zslice = s->base.u.tex.first_layer;
 438       }
 439
 440       svga_texture_copy_handle_resource(svga, tex, bs->handle,
 441                                         bs->key.numMipLevels,
 442                                         bs->key.numFaces * bs->key.arraySize,
 443                                         zslice, s->base.u.tex.level, layer);
 444    }
 445
 446    svga_mark_surface_dirty(&s->backed->base);
 447
 448    SVGA_STATS_TIME_POP(svga_sws(svga));
 449
 450    return s->backed;
 451 }
 452
 453 /**
 454  * Create a DX RenderTarget/DepthStencil View for the given surface,
 455  * if needed.
 456  */
 457 struct pipe_surface *
 458 svga_validate_surface_view(struct svga_context *svga, struct svga_surface *s)
 459 {
 460    enum pipe_error ret = PIPE_OK;
 461    enum pipe_shader_type shader;
 462
 463    assert(svga_have_vgpu10(svga));
 464    assert(s);
 465
 466    SVGA_STATS_TIME_PUSH(svga_sws(svga),
 467                         SVGA_STATS_TIME_VALIDATESURFACEVIEW);
 468
 469    /**
 470     * DX spec explicitly specifies that no resource can be bound to a render
 471     * target view and a shader resource view simultanously.
 472     * So first check if the resource bound to this surface view collides with
 473     * a sampler view. If so, then we will clone this surface view and its
 474     * associated resource. We will then use the cloned surface view for
 475     * render target.
 476     */
 477    for (shader = PIPE_SHADER_VERTEX; shader <= PIPE_SHADER_GEOMETRY; shader++) {
 478       if (svga_check_sampler_view_resource_collision(svga, s->handle, shader)) {
 479          SVGA_DBG(DEBUG_VIEWS,
 480                   "same resource used in shaderResource and renderTarget 0x%x\n",
 481                   s->handle);
 482          s = create_backed_surface_view(svga, s);
 483
 484          if (s)
 485             svga->state.hw_draw.has_backed_views = TRUE;
 486
 487          /* s may be null here if the function failed */
 488          break;
 489       }
 490    }
 491
 492    if (s && s->view_id == SVGA3D_INVALID_ID) {
 493       SVGA3dResourceType resType;
 494       SVGA3dRenderTargetViewDesc desc;
 495       struct svga_texture *stex = svga_texture(s->base.texture);
 496
 497       if (stex->validated == FALSE) {
 498          assert(stex->handle);
 499
 500          /* We are about to render into a surface that has not been validated.
 501           * First invalidate the surface so that the device does not
 502           * need to update the host-side copy with the invalid
 503           * content when the associated mob is first bound to the surface.
 504           */
 505          ret = SVGA3D_InvalidateGBSurface(svga->swc, stex->handle);
 506          if (ret != PIPE_OK) {
 507             s = NULL;
 508             goto done;
 509          }
 510          stex->validated = TRUE;
 511       }
 512
 513       desc.tex.mipSlice = s->real_level;
 514       desc.tex.firstArraySlice = s->real_layer + s->real_zslice;
 515       desc.tex.arraySize =
 516          s->base.u.tex.last_layer - s->base.u.tex.first_layer + 1;
 517
 518       s->view_id = util_bitmask_add(svga->surface_view_id_bm);
 519
 520       resType = svga_resource_type(s->base.texture->target);
 521
 522       if (util_format_is_depth_or_stencil(s->base.format)) {
 523          ret = SVGA3D_vgpu10_DefineDepthStencilView(svga->swc,
 524                                                     s->view_id,
 525                                                     s->handle,
 526                                                     s->key.format,
 527                                                     resType,
 528                                                     &desc);
 529       }
 530       else {
 531          SVGA3dSurfaceFormat view_format = s->key.format;
 532          const struct svga_texture *stex = svga_texture(s->base.texture);
 533
 534          /* Can't create RGBA render target view of a RGBX surface so adjust
 535           * the view format.  We do something similar for texture samplers in
 536           * svga_validate_pipe_sampler_view().
 537           */
 538          if (view_format == SVGA3D_B8G8R8A8_UNORM &&
 539              (stex->key.format == SVGA3D_B8G8R8X8_UNORM ||
 540               stex->key.format == SVGA3D_B8G8R8X8_TYPELESS)) {
 541             view_format = SVGA3D_B8G8R8X8_UNORM;
 542          }
 543
 544          ret = SVGA3D_vgpu10_DefineRenderTargetView(svga->swc,
 545                                                     s->view_id,
 546                                                     s->handle,
 547                                                     view_format,
 548                                                     resType,
 549                                                     &desc);
 550       }
 551
 552       if (ret != PIPE_OK) {
 553          util_bitmask_clear(svga->surface_view_id_bm, s->view_id);
 554          s->view_id = SVGA3D_INVALID_ID;
 555          s = NULL;
 556       }
 557    }
 558
 559 done:
 560    SVGA_STATS_TIME_POP(svga_sws(svga));
 561
 562    return s ? &s->base : NULL;
 563 }
 564
 565
 566
 567 static void
 568 svga_surface_destroy(struct pipe_context *pipe,
 569                      struct pipe_surface *surf)
 570 {
 571    struct svga_context *svga = svga_context(pipe);
 572    struct svga_surface *s = svga_surface(surf);
 573    struct svga_texture *t = svga_texture(surf->texture);
 574    struct svga_screen *ss = svga_screen(surf->texture->screen);
 575    enum pipe_error ret = PIPE_OK;
 576
 577    SVGA_STATS_TIME_PUSH(ss->sws, SVGA_STATS_TIME_DESTROYSURFACE);
 578
 579    /* Destroy the backed view surface if it exists */
 580    if (s->backed) {
 581       svga_surface_destroy(pipe, &s->backed->base);
 582       s->backed = NULL;
 583    }
 584
 585    if (s->handle != t->handle) {
 586       SVGA_DBG(DEBUG_DMA, "unref sid %p (tex surface)\n", s->handle);
 587       svga_screen_surface_destroy(ss, &s->key, &s->handle);
 588    }
 589
 590    if (s->view_id != SVGA3D_INVALID_ID) {
 591       unsigned try;
 592
 593       /* The SVGA3D device will generate a device error if the
 594        * render target view or depth stencil view is destroyed from
 595        * a context other than the one it was created with.
 596        * Similar to shader resource view, in this case, we will skip
 597        * the destroy for now.
 598        */
 599       if (surf->context != pipe) {
 600          _debug_printf("context mismatch in %s\n", __func__);
 601       }
 602       else {
 603          assert(svga_have_vgpu10(svga));
 604          for (try = 0; try < 2; try++) {
 605             if (util_format_is_depth_or_stencil(s->base.format)) {
 606                ret = SVGA3D_vgpu10_DestroyDepthStencilView(svga->swc, s->view_id);
 607             }
 608             else {
 609                ret = SVGA3D_vgpu10_DestroyRenderTargetView(svga->swc, s->view_id);
 610             }
 611             if (ret == PIPE_OK)
 612                break;
 613             svga_context_flush(svga, NULL);
 614          }
 615          assert(ret == PIPE_OK);
 616          util_bitmask_clear(svga->surface_view_id_bm, s->view_id);
 617       }
 618    }
 619
 620    pipe_resource_reference(&surf->texture, NULL);
 621    FREE(surf);
 622
 623    svga->hud.num_surface_views--;
 624    SVGA_STATS_TIME_POP(ss->sws);
 625 }
 626
 627
 628 static void
 629 svga_mark_surface_dirty(struct pipe_surface *surf)
 630 {
 631    struct svga_surface *s = svga_surface(surf);
 632    struct svga_texture *tex = svga_texture(surf->texture);
 633
 634    if (!s->dirty) {
 635       s->dirty = TRUE;
 636
 637       if (s->handle == tex->handle) {
 638          /* hmm so 3d textures always have all their slices marked ? */
 639          svga_define_texture_level(tex, surf->u.tex.first_layer,
 640                                    surf->u.tex.level);
 641       }
 642       else {
 643          /* this will happen later in svga_propagate_surface */
 644       }
 645    }
 646
 647    /* Increment the view_age and texture age for this surface's mipmap
 648     * level so that any sampler views into the texture are re-validated too.
 649     */
 650    svga_age_texture_view(tex, surf->u.tex.level);
 651 }
 652
 653
 654 void
 655 svga_mark_surfaces_dirty(struct svga_context *svga)
 656 {
 657    unsigned i;
 658
 659    for (i = 0; i < svga->curr.framebuffer.nr_cbufs; i++) {
 660       if (svga->curr.framebuffer.cbufs[i])
 661          svga_mark_surface_dirty(svga->curr.framebuffer.cbufs[i]);
 662    }
 663    if (svga->curr.framebuffer.zsbuf)
 664       svga_mark_surface_dirty(svga->curr.framebuffer.zsbuf);
 665 }
 666
 667
 668 /**
 669  * Progagate any changes from surfaces to texture.
 670  * pipe is optional context to inline the blit command in.
 671  */
 672 void
 673 svga_propagate_surface(struct svga_context *svga, struct pipe_surface *surf,
 674                        boolean reset)
 675 {
 676    struct svga_surface *s = svga_surface(surf);
 677    struct svga_texture *tex = svga_texture(surf->texture);
 678    struct svga_screen *ss = svga_screen(surf->texture->screen);
 679
 680    if (!s->dirty)
 681       return;
 682
 683    SVGA_STATS_TIME_PUSH(ss->sws, SVGA_STATS_TIME_PROPAGATESURFACE);
 684
 685    /* Reset the dirty flag if specified. This is to ensure that
 686     * the dirty flag will not be reset and stay unset when the backing
 687     * surface is still being bound and rendered to.
 688     * The reset flag will be set to TRUE when the surface is propagated
 689     * and will be unbound.
 690     */
 691    s->dirty = !reset;
 692
 693    ss->texture_timestamp++;
 694    svga_age_texture_view(tex, surf->u.tex.level);
 695
 696    if (s->handle != tex->handle) {
 697       unsigned zslice, layer;
 698       unsigned nlayers = 1;
 699       unsigned i;
 700
 701       if (surf->texture->target == PIPE_TEXTURE_CUBE) {
 702          zslice = 0;
 703          layer = surf->u.tex.first_layer;
 704       }
 705       else if (surf->texture->target == PIPE_TEXTURE_1D_ARRAY ||
 706                surf->texture->target == PIPE_TEXTURE_2D_ARRAY) {
 707          zslice = 0;
 708          layer = surf->u.tex.first_layer;
 709          nlayers = surf->u.tex.last_layer - surf->u.tex.first_layer + 1;
 710       }
 711       else {
 712          zslice = surf->u.tex.first_layer;
 713          layer = 0;
 714       }
 715
 716       SVGA_DBG(DEBUG_VIEWS,
 717                "svga: Surface propagate: tex %p, level %u, from %p\n",
 718                tex, surf->u.tex.level, surf);
 719       for (i = 0; i < nlayers; i++) {
 720          svga_texture_copy_handle(svga,
 721                                   s->handle, 0, 0, 0, s->real_level,
 722                                   s->real_layer + i,
 723                                   tex->handle, 0, 0, zslice, surf->u.tex.level,
 724                                   layer + i,
 725                                   u_minify(tex->b.b.width0, surf->u.tex.level),
 726                                   u_minify(tex->b.b.height0, surf->u.tex.level),
 727                                   1);
 728          svga_define_texture_level(tex, layer + i, surf->u.tex.level);
 729       }
 730    }
 731
 732    SVGA_STATS_TIME_POP(ss->sws);
 733 }
 734
 735
 736 /**
 737  * If any of the render targets are in backing texture views, propagate any
 738  * changes to them back to the original texture.
 739  */
 740 void
 741 svga_propagate_rendertargets(struct svga_context *svga)
 742 {
 743    unsigned i;
 744
 745    /* Early exit if there is no backing texture views in use */
 746    if (!svga->state.hw_draw.has_backed_views)
 747       return;
 748
 749    /* Note that we examine the svga->state.hw_draw.framebuffer surfaces,
 750     * not the svga->curr.framebuffer surfaces, because it's the former
 751     * surfaces which may be backing surface views (the actual render targets).
 752     */
 753    for (i = 0; i < svga->state.hw_draw.num_rendertargets; i++) {
 754       struct pipe_surface *s = svga->state.hw_draw.rtv[i];
 755       if (s) {
 756          svga_propagate_surface(svga, s, FALSE);
 757       }
 758    }
 759
 760    if (svga->state.hw_draw.dsv) {
 761       svga_propagate_surface(svga, svga->state.hw_draw.dsv, FALSE);
 762    }
 763 }
 764
 765
 766 /**
 767  * Check if we should call svga_propagate_surface on the surface.
 768  */
 769 boolean
 770 svga_surface_needs_propagation(const struct pipe_surface *surf)
 771 {
 772    const struct svga_surface *s = svga_surface_const(surf);
 773    struct svga_texture *tex = svga_texture(surf->texture);
 774
 775    return s->dirty && s->handle != tex->handle;
 776 }
 777
 778
 779 static void
 780 svga_get_sample_position(struct pipe_context *context,
 781                          unsigned sample_count, unsigned sample_index,
 782                          float *pos_out)
 783 {
 784    /* We can't actually query the device to learn the sample positions.
 785     * These were grabbed from nvidia's driver.
 786     */
 787    static const float pos1[1][2] = {
 788       { 0.5, 0.5 }
 789    };
 790    static const float pos4[4][2] = {
 791       { 0.375000, 0.125000 },
 792       { 0.875000, 0.375000 },
 793       { 0.125000, 0.625000 },
 794       { 0.625000, 0.875000 }
 795    };
 796    static const float pos8[8][2] = {
 797       { 0.562500, 0.312500 },
 798       { 0.437500, 0.687500 },
 799       { 0.812500, 0.562500 },
 800       { 0.312500, 0.187500 },
 801       { 0.187500, 0.812500 },
 802       { 0.062500, 0.437500 },
 803       { 0.687500, 0.937500 },
 804       { 0.937500, 0.062500 }
 805    };
 806    static const float pos16[16][2] = {
 807       { 0.187500, 0.062500 },
 808       { 0.437500, 0.187500 },
 809       { 0.062500, 0.312500 },
 810       { 0.312500, 0.437500 },
 811       { 0.687500, 0.062500 },
 812       { 0.937500, 0.187500 },
 813       { 0.562500, 0.312500 },
 814       { 0.812500, 0.437500 },
 815       { 0.187500, 0.562500 },
 816       { 0.437500, 0.687500 },
 817       { 0.062500, 0.812500 },
 818       { 0.312500, 0.937500 },
 819       { 0.687500, 0.562500 },
 820       { 0.937500, 0.687500 },
 821       { 0.562500, 0.812500 },
 822       { 0.812500, 0.937500 }
 823    };
 824    const float (*positions)[2];
 825
 826    switch (sample_count) {
 827    case 4:
 828       positions = pos4;
 829       break;
 830    case 8:
 831       positions = pos8;
 832       break;
 833    case 16:
 834       positions = pos16;
 835       break;
 836    default:
 837       positions = pos1;
 838    }
 839
 840    pos_out[0] = positions[sample_index][0];
 841    pos_out[1] = positions[sample_index][1];
 842 }
 843
 844
 845 void
 846 svga_init_surface_functions(struct svga_context *svga)
 847 {
 848    svga->pipe.create_surface = svga_create_surface;
 849    svga->pipe.surface_destroy = svga_surface_destroy;
 850    svga->pipe.get_sample_position = svga_get_sample_position;
 851 }