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,
 299                "New backed surface view: resource %p, level %u layer %u z %u, %p\n",
 300                pt, surf_tmpl->u.tex.level, layer, zslice, s);
 301
 302       if (svga_have_vgpu10(svga)) {
 303          switch (pt->target) {
 304          case PIPE_TEXTURE_1D:
 305             flags |= SVGA3D_SURFACE_1D;
 306             break;
 307          case PIPE_TEXTURE_1D_ARRAY:
 308             flags |= SVGA3D_SURFACE_1D | SVGA3D_SURFACE_ARRAY;
 309             break;
 310          case PIPE_TEXTURE_2D_ARRAY:
 311             flags |= SVGA3D_SURFACE_ARRAY;
 312             break;
 313          case PIPE_TEXTURE_3D:
 314             flags |= SVGA3D_SURFACE_VOLUME;
 315             break;
 316          case PIPE_TEXTURE_CUBE:
 317             if (nlayers == 6)
 318                flags |= SVGA3D_SURFACE_CUBEMAP;
 319             break;
 320          default:
 321             break;
 322          }
 323       }
 324
 325       /* When we clone the surface view resource, use the format used in
 326        * the creation of the original resource.
 327        */
 328       s->handle = svga_texture_view_surface(svga, tex, bind, flags,
 329                                             tex->key.format,
 330                                             surf_tmpl->u.tex.level, 1,
 331                                             layer, nlayers, zslice, &s->key);
 332       if (!s->handle) {
 333          FREE(s);
 334          goto done;
 335       }
 336
 337       s->key.format = format;
 338       s->real_layer = 0;
 339       s->real_level = 0;
 340       s->real_zslice = 0;
 341    } else {
 342       SVGA_DBG(DEBUG_VIEWS,
 343                "New surface view: resource %p, level %u, layer %u, z %u, %p\n",
 344                pt, surf_tmpl->u.tex.level, layer, zslice, s);
 345
 346       memset(&s->key, 0, sizeof s->key);
 347       s->key.format = format;
 348       s->handle = tex->handle;
 349       s->real_layer = layer;
 350       s->real_zslice = zslice;
 351       s->real_level = surf_tmpl->u.tex.level;
 352    }
 353
 354    svga->hud.num_surface_views++;
 355    retVal = &s->base;
 356
 357 done:
 358    SVGA_STATS_TIME_POP(ss->sws);
 359    return retVal;
 360 }
 361
 362
 363 static struct pipe_surface *
 364 svga_create_surface(struct pipe_context *pipe,
 365                     struct pipe_resource *pt,
 366                     const struct pipe_surface *surf_tmpl)
 367 {
 368    struct svga_context *svga = svga_context(pipe);
 369    struct pipe_screen *screen = pipe->screen;
 370    struct pipe_surface *surf = NULL;
 371    boolean view = FALSE;
 372
 373    SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_CREATESURFACE);
 374
 375    if (svga_screen(screen)->debug.force_surface_view)
 376       view = TRUE;
 377
 378    if (surf_tmpl->u.tex.level != 0 &&
 379        svga_screen(screen)->debug.force_level_surface_view)
 380       view = TRUE;
 381
 382    if (pt->target == PIPE_TEXTURE_3D)
 383       view = TRUE;
 384
 385    if (svga_have_vgpu10(svga) || svga_screen(screen)->debug.no_surface_view)
 386       view = FALSE;
 387
 388    surf = svga_create_surface_view(pipe, pt, surf_tmpl, view);
 389
 390    SVGA_STATS_TIME_POP(svga_sws(svga));
 391
 392    return surf;
 393 }
 394
 395
 396 /**
 397  * Clone the surface view and its associated resource.
 398  */
 399 static struct svga_surface *
 400 create_backed_surface_view(struct svga_context *svga, struct svga_surface *s)
 401 {
 402    struct svga_texture *tex = svga_texture(s->base.texture);
 403
 404    SVGA_STATS_TIME_PUSH(svga_sws(svga),
 405                         SVGA_STATS_TIME_CREATEBACKEDSURFACEVIEW);
 406
 407    if (!s->backed) {
 408       struct pipe_surface *backed_view;
 409
 410       backed_view = svga_create_surface_view(&svga->pipe,
 411                                              &tex->b.b,
 412                                              &s->base,
 413                                              TRUE);
 414       if (!backed_view)
 415          return NULL;
 416
 417       s->backed = svga_surface(backed_view);
 418    }
 419    else {
 420       /*
 421        * There is already an existing backing surface, but we still need to
 422        * sync the handles.
 423        */
 424       struct svga_surface *bs = s->backed;
 425       unsigned int layer, zslice;
 426
 427       assert(bs->handle);
 428
 429       switch (tex->b.b.target) {
 430       case PIPE_TEXTURE_CUBE:
 431       case PIPE_TEXTURE_1D_ARRAY:
 432       case PIPE_TEXTURE_2D_ARRAY:
 433          layer = s->base.u.tex.first_layer;
 434          zslice = 0;
 435          break;
 436       default:
 437          layer = 0;
 438          zslice = s->base.u.tex.first_layer;
 439       }
 440
 441       svga_texture_copy_handle_resource(svga, tex, bs->handle,
 442                                         bs->key.numMipLevels,
 443                                         bs->key.numFaces * bs->key.arraySize,
 444                                         zslice, s->base.u.tex.level, layer);
 445    }
 446
 447    svga_mark_surface_dirty(&s->backed->base);
 448
 449    SVGA_STATS_TIME_POP(svga_sws(svga));
 450
 451    return s->backed;
 452 }
 453
 454 /**
 455  * Create a DX RenderTarget/DepthStencil View for the given surface,
 456  * if needed.
 457  */
 458 struct pipe_surface *
 459 svga_validate_surface_view(struct svga_context *svga, struct svga_surface *s)
 460 {
 461    enum pipe_error ret = PIPE_OK;
 462    enum pipe_shader_type shader;
 463
 464    assert(svga_have_vgpu10(svga));
 465    assert(s);
 466
 467    SVGA_STATS_TIME_PUSH(svga_sws(svga),
 468                         SVGA_STATS_TIME_VALIDATESURFACEVIEW);
 469
 470    /**
 471     * DX spec explicitly specifies that no resource can be bound to a render
 472     * target view and a shader resource view simultanously.
 473     * So first check if the resource bound to this surface view collides with
 474     * a sampler view. If so, then we will clone this surface view and its
 475     * associated resource. We will then use the cloned surface view for
 476     * render target.
 477     */
 478    for (shader = PIPE_SHADER_VERTEX; shader <= PIPE_SHADER_GEOMETRY; shader++) {
 479       if (svga_check_sampler_view_resource_collision(svga, s->handle, shader)) {
 480          SVGA_DBG(DEBUG_VIEWS,
 481                   "same resource used in shaderResource and renderTarget 0x%x\n",
 482                   s->handle);
 483          s = create_backed_surface_view(svga, s);
 484
 485          if (s)
 486             svga->state.hw_draw.has_backed_views = TRUE;
 487
 488          /* s may be null here if the function failed */
 489          break;
 490       }
 491    }
 492
 493    if (s && s->view_id == SVGA3D_INVALID_ID) {
 494       SVGA3dResourceType resType;
 495       SVGA3dRenderTargetViewDesc desc;
 496       struct svga_texture *stex = svga_texture(s->base.texture);
 497
 498       if (stex->validated == FALSE) {
 499          assert(stex->handle);
 500
 501          /* We are about to render into a surface that has not been validated.
 502           * First invalidate the surface so that the device does not
 503           * need to update the host-side copy with the invalid
 504           * content when the associated mob is first bound to the surface.
 505           */
 506          ret = SVGA3D_InvalidateGBSurface(svga->swc, stex->handle);
 507          if (ret != PIPE_OK) {
 508             s = NULL;
 509             goto done;
 510          }
 511          stex->validated = TRUE;
 512       }
 513
 514       desc.tex.mipSlice = s->real_level;
 515       desc.tex.firstArraySlice = s->real_layer + s->real_zslice;
 516       desc.tex.arraySize =
 517          s->base.u.tex.last_layer - s->base.u.tex.first_layer + 1;
 518
 519       s->view_id = util_bitmask_add(svga->surface_view_id_bm);
 520
 521       resType = svga_resource_type(s->base.texture->target);
 522
 523       if (util_format_is_depth_or_stencil(s->base.format)) {
 524          ret = SVGA3D_vgpu10_DefineDepthStencilView(svga->swc,
 525                                                     s->view_id,
 526                                                     s->handle,
 527                                                     s->key.format,
 528                                                     resType,
 529                                                     &desc);
 530       }
 531       else {
 532          SVGA3dSurfaceFormat view_format = s->key.format;
 533          const struct svga_texture *stex = svga_texture(s->base.texture);
 534
 535          /* Can't create RGBA render target view of a RGBX surface so adjust
 536           * the view format.  We do something similar for texture samplers in
 537           * svga_validate_pipe_sampler_view().
 538           */
 539          if (view_format == SVGA3D_B8G8R8A8_UNORM &&
 540              (stex->key.format == SVGA3D_B8G8R8X8_UNORM ||
 541               stex->key.format == SVGA3D_B8G8R8X8_TYPELESS)) {
 542             view_format = SVGA3D_B8G8R8X8_UNORM;
 543          }
 544
 545          ret = SVGA3D_vgpu10_DefineRenderTargetView(svga->swc,
 546                                                     s->view_id,
 547                                                     s->handle,
 548                                                     view_format,
 549                                                     resType,
 550                                                     &desc);
 551       }
 552
 553       if (ret != PIPE_OK) {
 554          util_bitmask_clear(svga->surface_view_id_bm, s->view_id);
 555          s->view_id = SVGA3D_INVALID_ID;
 556          s = NULL;
 557       }
 558    }
 559
 560 done:
 561    SVGA_STATS_TIME_POP(svga_sws(svga));
 562
 563    return s ? &s->base : NULL;
 564 }
 565
 566
 567
 568 static void
 569 svga_surface_destroy(struct pipe_context *pipe,
 570                      struct pipe_surface *surf)
 571 {
 572    struct svga_context *svga = svga_context(pipe);
 573    struct svga_surface *s = svga_surface(surf);
 574    struct svga_texture *t = svga_texture(surf->texture);
 575    struct svga_screen *ss = svga_screen(surf->texture->screen);
 576    enum pipe_error ret = PIPE_OK;
 577
 578    SVGA_STATS_TIME_PUSH(ss->sws, SVGA_STATS_TIME_DESTROYSURFACE);
 579
 580    /* Destroy the backed view surface if it exists */
 581    if (s->backed) {
 582       svga_surface_destroy(pipe, &s->backed->base);
 583       s->backed = NULL;
 584    }
 585
 586    if (s->handle != t->handle) {
 587       SVGA_DBG(DEBUG_DMA, "unref sid %p (tex surface)\n", s->handle);
 588       svga_screen_surface_destroy(ss, &s->key, &s->handle);
 589    }
 590
 591    if (s->view_id != SVGA3D_INVALID_ID) {
 592       unsigned try;
 593
 594       /* The SVGA3D device will generate a device error if the
 595        * render target view or depth stencil view is destroyed from
 596        * a context other than the one it was created with.
 597        * Similar to shader resource view, in this case, we will skip
 598        * the destroy for now.
 599        */
 600       if (surf->context != pipe) {
 601          _debug_printf("context mismatch in %s\n", __func__);
 602       }
 603       else {
 604          assert(svga_have_vgpu10(svga));
 605          for (try = 0; try < 2; try++) {
 606             if (util_format_is_depth_or_stencil(s->base.format)) {
 607                ret = SVGA3D_vgpu10_DestroyDepthStencilView(svga->swc, s->view_id);
 608             }
 609             else {
 610                ret = SVGA3D_vgpu10_DestroyRenderTargetView(svga->swc, s->view_id);
 611             }
 612             if (ret == PIPE_OK)
 613                break;
 614             svga_context_flush(svga, NULL);
 615          }
 616          assert(ret == PIPE_OK);
 617          util_bitmask_clear(svga->surface_view_id_bm, s->view_id);
 618       }
 619    }
 620
 621    pipe_resource_reference(&surf->texture, NULL);
 622    FREE(surf);
 623
 624    svga->hud.num_surface_views--;
 625    SVGA_STATS_TIME_POP(ss->sws);
 626 }
 627
 628
 629 static void
 630 svga_mark_surface_dirty(struct pipe_surface *surf)
 631 {
 632    struct svga_surface *s = svga_surface(surf);
 633    struct svga_texture *tex = svga_texture(surf->texture);
 634
 635    if (!s->dirty) {
 636       s->dirty = TRUE;
 637
 638       if (s->handle == tex->handle) {
 639          /* hmm so 3d textures always have all their slices marked ? */
 640          svga_define_texture_level(tex, surf->u.tex.first_layer,
 641                                    surf->u.tex.level);
 642       }
 643       else {
 644          /* this will happen later in svga_propagate_surface */
 645       }
 646    }
 647
 648    /* Increment the view_age and texture age for this surface's mipmap
 649     * level so that any sampler views into the texture are re-validated too.
 650     */
 651    svga_age_texture_view(tex, surf->u.tex.level);
 652 }
 653
 654
 655 void
 656 svga_mark_surfaces_dirty(struct svga_context *svga)
 657 {
 658    unsigned i;
 659
 660    for (i = 0; i < svga->curr.framebuffer.nr_cbufs; i++) {
 661       if (svga->curr.framebuffer.cbufs[i])
 662          svga_mark_surface_dirty(svga->curr.framebuffer.cbufs[i]);
 663    }
 664    if (svga->curr.framebuffer.zsbuf)
 665       svga_mark_surface_dirty(svga->curr.framebuffer.zsbuf);
 666 }
 667
 668
 669 /**
 670  * Progagate any changes from surfaces to texture.
 671  * pipe is optional context to inline the blit command in.
 672  */
 673 void
 674 svga_propagate_surface(struct svga_context *svga, struct pipe_surface *surf,
 675                        boolean reset)
 676 {
 677    struct svga_surface *s = svga_surface(surf);
 678    struct svga_texture *tex = svga_texture(surf->texture);
 679    struct svga_screen *ss = svga_screen(surf->texture->screen);
 680
 681    if (!s->dirty)
 682       return;
 683
 684    SVGA_STATS_TIME_PUSH(ss->sws, SVGA_STATS_TIME_PROPAGATESURFACE);
 685
 686    /* Reset the dirty flag if specified. This is to ensure that
 687     * the dirty flag will not be reset and stay unset when the backing
 688     * surface is still being bound and rendered to.
 689     * The reset flag will be set to TRUE when the surface is propagated
 690     * and will be unbound.
 691     */
 692    s->dirty = !reset;
 693
 694    ss->texture_timestamp++;
 695    svga_age_texture_view(tex, surf->u.tex.level);
 696
 697    if (s->handle != tex->handle) {
 698       unsigned zslice, layer;
 699       unsigned nlayers = 1;
 700       unsigned i;
 701
 702       if (surf->texture->target == PIPE_TEXTURE_CUBE) {
 703          zslice = 0;
 704          layer = surf->u.tex.first_layer;
 705       }
 706       else if (surf->texture->target == PIPE_TEXTURE_1D_ARRAY ||
 707                surf->texture->target == PIPE_TEXTURE_2D_ARRAY) {
 708          zslice = 0;
 709          layer = surf->u.tex.first_layer;
 710          nlayers = surf->u.tex.last_layer - surf->u.tex.first_layer + 1;
 711       }
 712       else {
 713          zslice = surf->u.tex.first_layer;
 714          layer = 0;
 715       }
 716
 717       SVGA_DBG(DEBUG_VIEWS,
 718                "Propagate surface %p to resource %p, level %u\n",
 719                surf, tex, surf->u.tex.level);
 720       for (i = 0; i < nlayers; i++) {
 721          svga_texture_copy_handle(svga,
 722                                   s->handle, 0, 0, 0, s->real_level,
 723                                   s->real_layer + i,
 724                                   tex->handle, 0, 0, zslice, surf->u.tex.level,
 725                                   layer + i,
 726                                   u_minify(tex->b.b.width0, surf->u.tex.level),
 727                                   u_minify(tex->b.b.height0, surf->u.tex.level),
 728                                   1);
 729          svga_define_texture_level(tex, layer + i, surf->u.tex.level);
 730       }
 731    }
 732
 733    SVGA_STATS_TIME_POP(ss->sws);
 734 }
 735
 736
 737 /**
 738  * If any of the render targets are in backing texture views, propagate any
 739  * changes to them back to the original texture.
 740  */
 741 void
 742 svga_propagate_rendertargets(struct svga_context *svga)
 743 {
 744    unsigned i;
 745
 746    /* Early exit if there is no backing texture views in use */
 747    if (!svga->state.hw_draw.has_backed_views)
 748       return;
 749
 750    /* Note that we examine the svga->state.hw_draw.framebuffer surfaces,
 751     * not the svga->curr.framebuffer surfaces, because it's the former
 752     * surfaces which may be backing surface views (the actual render targets).
 753     */
 754    for (i = 0; i < svga->state.hw_draw.num_rendertargets; i++) {
 755       struct pipe_surface *s = svga->state.hw_draw.rtv[i];
 756       if (s) {
 757          svga_propagate_surface(svga, s, FALSE);
 758       }
 759    }
 760
 761    if (svga->state.hw_draw.dsv) {
 762       svga_propagate_surface(svga, svga->state.hw_draw.dsv, FALSE);
 763    }
 764 }
 765
 766
 767 /**
 768  * Check if we should call svga_propagate_surface on the surface.
 769  */
 770 boolean
 771 svga_surface_needs_propagation(const struct pipe_surface *surf)
 772 {
 773    const struct svga_surface *s = svga_surface_const(surf);
 774    struct svga_texture *tex = svga_texture(surf->texture);
 775
 776    return s->dirty && s->handle != tex->handle;
 777 }
 778
 779
 780 static void
 781 svga_get_sample_position(struct pipe_context *context,
 782                          unsigned sample_count, unsigned sample_index,
 783                          float *pos_out)
 784 {
 785    /* We can't actually query the device to learn the sample positions.
 786     * These were grabbed from nvidia's driver.
 787     */
 788    static const float pos1[1][2] = {
 789       { 0.5, 0.5 }
 790    };
 791    static const float pos4[4][2] = {
 792       { 0.375000, 0.125000 },
 793       { 0.875000, 0.375000 },
 794       { 0.125000, 0.625000 },
 795       { 0.625000, 0.875000 }
 796    };
 797    static const float pos8[8][2] = {
 798       { 0.562500, 0.312500 },
 799       { 0.437500, 0.687500 },
 800       { 0.812500, 0.562500 },
 801       { 0.312500, 0.187500 },
 802       { 0.187500, 0.812500 },
 803       { 0.062500, 0.437500 },
 804       { 0.687500, 0.937500 },
 805       { 0.937500, 0.062500 }
 806    };
 807    static const float pos16[16][2] = {
 808       { 0.187500, 0.062500 },
 809       { 0.437500, 0.187500 },
 810       { 0.062500, 0.312500 },
 811       { 0.312500, 0.437500 },
 812       { 0.687500, 0.062500 },
 813       { 0.937500, 0.187500 },
 814       { 0.562500, 0.312500 },
 815       { 0.812500, 0.437500 },
 816       { 0.187500, 0.562500 },
 817       { 0.437500, 0.687500 },
 818       { 0.062500, 0.812500 },
 819       { 0.312500, 0.937500 },
 820       { 0.687500, 0.562500 },
 821       { 0.937500, 0.687500 },
 822       { 0.562500, 0.812500 },
 823       { 0.812500, 0.937500 }
 824    };
 825    const float (*positions)[2];
 826
 827    switch (sample_count) {
 828    case 4:
 829       positions = pos4;
 830       break;
 831    case 8:
 832       positions = pos8;
 833       break;
 834    case 16:
 835       positions = pos16;
 836       break;
 837    default:
 838       positions = pos1;
 839    }
 840
 841    pos_out[0] = positions[sample_index][0];
 842    pos_out[1] = positions[sample_index][1];
 843 }
 844
 845
 846 void
 847 svga_init_surface_functions(struct svga_context *svga)
 848 {
 849    svga->pipe.create_surface = svga_create_surface;
 850    svga->pipe.surface_destroy = svga_surface_destroy;
 851    svga->pipe.get_sample_position = svga_get_sample_position;
 852 }