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                           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;
 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    key->flags = flags;
 174    key->format = format;
 175    key->numMipLevels = num_mip;
 176    key->size.width = u_minify(tex->b.b.width0, start_mip);
 177    key->size.height = u_minify(tex->b.b.height0, start_mip);
 178    key->size.depth = zslice_pick < 0 ? u_minify(tex->b.b.depth0, start_mip) : 1;
 179    key->cachable = 1;
 180    key->arraySize = 1;
 181    key->numFaces = 1;
 182
 183    /* single sample surface can be treated as non-multisamples surface */
 184    key->sampleCount = tex->b.b.nr_samples > 1 ? tex->b.b.nr_samples : 0;
 185
 186    if (key->sampleCount > 1) {
 187       key->flags |= SVGA3D_SURFACE_MASKABLE_ANTIALIAS;
 188    }
 189
 190    if (tex->b.b.target == PIPE_TEXTURE_CUBE && layer_pick < 0) {
 191       key->flags |= SVGA3D_SURFACE_CUBEMAP;
 192       key->numFaces = 6;
 193    } else if (tex->b.b.target == PIPE_TEXTURE_1D_ARRAY ||
 194               tex->b.b.target == PIPE_TEXTURE_2D_ARRAY) {
 195       key->arraySize = num_layers;
 196    }
 197
 198    if (key->format == SVGA3D_FORMAT_INVALID) {
 199       key->cachable = 0;
 200       return NULL;
 201    }
 202
 203    if (cacheable && tex->backed_handle &&
 204        memcmp(key, &tex->backed_key, sizeof *key) == 0) {
 205       handle = tex->backed_handle;
 206       needCopyResource = tex->backed_age < tex->age;
 207    } else {
 208       SVGA_DBG(DEBUG_DMA, "surface_create for texture view\n");
 209       handle = svga_screen_surface_create(ss, bind_flags, PIPE_USAGE_DEFAULT,
 210                                           &validated, key);
 211       needCopyResource = TRUE;
 212
 213       if (cacheable && !tex->backed_handle) {
 214          tex->backed_handle = handle;
 215          memcpy(&tex->backed_key, key, sizeof *key);
 216       }
 217    }
 218
 219    if (!handle) {
 220       key->cachable = 0;
 221       return NULL;
 222    }
 223
 224    SVGA_DBG(DEBUG_DMA, " --> got sid %p (texture view)\n", handle);
 225
 226    if (layer_pick < 0)
 227       layer_pick = 0;
 228
 229    if (needCopyResource) {
 230       svga_texture_copy_handle_resource(svga, tex, handle,
 231                                         key->numMipLevels,
 232                                         key->numFaces * key->arraySize,
 233                                         zslice_pick, start_mip, layer_pick);
 234       tex->backed_age = tex->age;
 235    }
 236
 237    return handle;
 238 }
 239
 240
 241 /**
 242  * A helper function to create a surface view.
 243  * The view boolean flag specifies whether svga_texture_view_surface()
 244  * will be called to create a cloned surface and resource for the view.
 245  */
 246 static struct pipe_surface *
 247 svga_create_surface_view(struct pipe_context *pipe,
 248                          struct pipe_resource *pt,
 249                          const struct pipe_surface *surf_tmpl,
 250                          boolean view)
 251 {
 252    struct svga_context *svga = svga_context(pipe);
 253    struct svga_texture *tex = svga_texture(pt);
 254    struct pipe_screen *screen = pipe->screen;
 255    struct svga_screen *ss = svga_screen(screen);
 256    struct svga_surface *s;
 257    unsigned layer, zslice, bind;
 258    unsigned nlayers = 1;
 259    SVGA3dSurfaceFlags flags = 0;
 260    SVGA3dSurfaceFormat format;
 261    struct pipe_surface *retVal = NULL;
 262
 263    s = CALLOC_STRUCT(svga_surface);
 264    if (!s)
 265       return NULL;
 266
 267    SVGA_STATS_TIME_PUSH(ss->sws, SVGA_STATS_TIME_CREATESURFACEVIEW);
 268
 269    if (pt->target == PIPE_TEXTURE_CUBE) {
 270       layer = surf_tmpl->u.tex.first_layer;
 271       zslice = 0;
 272    }
 273    else if (pt->target == PIPE_TEXTURE_1D_ARRAY ||
 274             pt->target == PIPE_TEXTURE_2D_ARRAY) {
 275       layer = surf_tmpl->u.tex.first_layer;
 276       zslice = 0;
 277       nlayers = surf_tmpl->u.tex.last_layer - surf_tmpl->u.tex.first_layer + 1;
 278    }
 279    else {
 280       layer = 0;
 281       zslice = surf_tmpl->u.tex.first_layer;
 282    }
 283
 284    pipe_reference_init(&s->base.reference, 1);
 285    pipe_resource_reference(&s->base.texture, pt);
 286    s->base.context = pipe;
 287    s->base.format = surf_tmpl->format;
 288    s->base.width = u_minify(pt->width0, surf_tmpl->u.tex.level);
 289    s->base.height = u_minify(pt->height0, surf_tmpl->u.tex.level);
 290    s->base.u.tex.level = surf_tmpl->u.tex.level;
 291    s->base.u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 292    s->base.u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 293    s->view_id = SVGA3D_INVALID_ID;
 294
 295    s->backed = NULL;
 296
 297    if (util_format_is_depth_or_stencil(surf_tmpl->format)) {
 298       flags = SVGA3D_SURFACE_HINT_DEPTHSTENCIL |
 299               SVGA3D_SURFACE_BIND_DEPTH_STENCIL;
 300       bind = PIPE_BIND_DEPTH_STENCIL;
 301    }
 302    else {
 303       flags = SVGA3D_SURFACE_HINT_RENDERTARGET |
 304               SVGA3D_SURFACE_BIND_RENDER_TARGET;
 305       bind = PIPE_BIND_RENDER_TARGET;
 306    }
 307
 308    if (tex->imported) {
 309       /* imported resource (a window) */
 310       format = tex->key.format;
 311       if (util_format_is_srgb(surf_tmpl->format)) {
 312          /* sRGB rendering to window */
 313          format = svga_linear_to_srgb(format);
 314       }
 315    }
 316    else {
 317       format = svga_translate_format(ss, surf_tmpl->format, bind);
 318    }
 319
 320    assert(format != SVGA3D_FORMAT_INVALID);
 321
 322    if (view) {
 323       SVGA_DBG(DEBUG_VIEWS,
 324                "New backed surface view: resource %p, level %u layer %u z %u, %p\n",
 325                pt, surf_tmpl->u.tex.level, layer, zslice, s);
 326
 327       if (svga_have_vgpu10(svga)) {
 328          switch (pt->target) {
 329          case PIPE_TEXTURE_1D:
 330             flags |= SVGA3D_SURFACE_1D;
 331             break;
 332          case PIPE_TEXTURE_1D_ARRAY:
 333             flags |= SVGA3D_SURFACE_1D | SVGA3D_SURFACE_ARRAY;
 334             break;
 335          case PIPE_TEXTURE_2D_ARRAY:
 336             flags |= SVGA3D_SURFACE_ARRAY;
 337             break;
 338          case PIPE_TEXTURE_3D:
 339             flags |= SVGA3D_SURFACE_VOLUME;
 340             break;
 341          case PIPE_TEXTURE_CUBE:
 342             if (nlayers == 6)
 343                flags |= SVGA3D_SURFACE_CUBEMAP;
 344             break;
 345          default:
 346             break;
 347          }
 348       }
 349
 350       /* When we clone the surface view resource, use the format used in
 351        * the creation of the original resource.
 352        */
 353       s->handle = svga_texture_view_surface(svga, tex, bind, flags,
 354                                             tex->key.format,
 355                                             surf_tmpl->u.tex.level, 1,
 356                                             layer, nlayers, zslice,
 357                                             TRUE, &s->key);
 358       if (!s->handle) {
 359          FREE(s);
 360          goto done;
 361       }
 362
 363       s->key.format = format;
 364       s->real_layer = 0;
 365       s->real_level = 0;
 366       s->real_zslice = 0;
 367    } else {
 368       SVGA_DBG(DEBUG_VIEWS,
 369                "New surface view: resource %p, level %u, layer %u, z %u, %p\n",
 370                pt, surf_tmpl->u.tex.level, layer, zslice, s);
 371
 372       memset(&s->key, 0, sizeof s->key);
 373       s->key.format = format;
 374       s->handle = tex->handle;
 375       s->real_layer = layer;
 376       s->real_zslice = zslice;
 377       s->real_level = surf_tmpl->u.tex.level;
 378    }
 379
 380    svga->hud.num_surface_views++;
 381    retVal = &s->base;
 382
 383 done:
 384    SVGA_STATS_TIME_POP(ss->sws);
 385    return retVal;
 386 }
 387
 388
 389 static struct pipe_surface *
 390 svga_create_surface(struct pipe_context *pipe,
 391                     struct pipe_resource *pt,
 392                     const struct pipe_surface *surf_tmpl)
 393 {
 394    struct svga_context *svga = svga_context(pipe);
 395    struct pipe_screen *screen = pipe->screen;
 396    struct pipe_surface *surf = NULL;
 397    boolean view = FALSE;
 398
 399    SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_CREATESURFACE);
 400
 401    if (svga_screen(screen)->debug.force_surface_view)
 402       view = TRUE;
 403
 404    if (surf_tmpl->u.tex.level != 0 &&
 405        svga_screen(screen)->debug.force_level_surface_view)
 406       view = TRUE;
 407
 408    if (pt->target == PIPE_TEXTURE_3D)
 409       view = TRUE;
 410
 411    if (svga_have_vgpu10(svga) || svga_screen(screen)->debug.no_surface_view)
 412       view = FALSE;
 413
 414    surf = svga_create_surface_view(pipe, pt, surf_tmpl, view);
 415
 416    SVGA_STATS_TIME_POP(svga_sws(svga));
 417
 418    return surf;
 419 }
 420
 421
 422 /**
 423  * Clone the surface view and its associated resource.
 424  */
 425 static struct svga_surface *
 426 create_backed_surface_view(struct svga_context *svga, struct svga_surface *s)
 427 {
 428    struct svga_texture *tex = svga_texture(s->base.texture);
 429
 430    SVGA_STATS_TIME_PUSH(svga_sws(svga),
 431                         SVGA_STATS_TIME_CREATEBACKEDSURFACEVIEW);
 432
 433    if (!s->backed) {
 434       struct pipe_surface *backed_view;
 435
 436       backed_view = svga_create_surface_view(&svga->pipe,
 437                                              &tex->b.b,
 438                                              &s->base,
 439                                              TRUE);
 440       if (!backed_view)
 441          return NULL;
 442
 443       s->backed = svga_surface(backed_view);
 444    }
 445    else if (s->backed->age < tex->age) {
 446       /*
 447        * There is already an existing backing surface, but we still need to
 448        * sync the backing resource if the original resource has been modified
 449        * since the last copy.
 450        */
 451       struct svga_surface *bs = s->backed;
 452       unsigned int layer, zslice;
 453
 454       assert(bs->handle);
 455
 456       switch (tex->b.b.target) {
 457       case PIPE_TEXTURE_CUBE:
 458       case PIPE_TEXTURE_1D_ARRAY:
 459       case PIPE_TEXTURE_2D_ARRAY:
 460          layer = s->base.u.tex.first_layer;
 461          zslice = 0;
 462          break;
 463       default:
 464          layer = 0;
 465          zslice = s->base.u.tex.first_layer;
 466       }
 467
 468       svga_texture_copy_handle_resource(svga, tex, bs->handle,
 469                                         bs->key.numMipLevels,
 470                                         bs->key.numFaces * bs->key.arraySize,
 471                                         zslice, s->base.u.tex.level, layer);
 472    }
 473
 474    svga_mark_surface_dirty(&s->backed->base);
 475    s->backed->age = tex->age;
 476
 477    SVGA_STATS_TIME_POP(svga_sws(svga));
 478
 479    return s->backed;
 480 }
 481
 482 /**
 483  * Create a DX RenderTarget/DepthStencil View for the given surface,
 484  * if needed.
 485  */
 486 struct pipe_surface *
 487 svga_validate_surface_view(struct svga_context *svga, struct svga_surface *s)
 488 {
 489    enum pipe_error ret = PIPE_OK;
 490    enum pipe_shader_type shader;
 491
 492    assert(svga_have_vgpu10(svga));
 493    assert(s);
 494
 495    SVGA_STATS_TIME_PUSH(svga_sws(svga),
 496                         SVGA_STATS_TIME_VALIDATESURFACEVIEW);
 497
 498    /**
 499     * DX spec explicitly specifies that no resource can be bound to a render
 500     * target view and a shader resource view simultanously.
 501     * So first check if the resource bound to this surface view collides with
 502     * a sampler view. If so, then we will clone this surface view and its
 503     * associated resource. We will then use the cloned surface view for
 504     * render target.
 505     */
 506    for (shader = PIPE_SHADER_VERTEX; shader <= PIPE_SHADER_GEOMETRY; shader++) {
 507       if (svga_check_sampler_view_resource_collision(svga, s->handle, shader)) {
 508          SVGA_DBG(DEBUG_VIEWS,
 509                   "same resource used in shaderResource and renderTarget 0x%x\n",
 510                   s->handle);
 511          s = create_backed_surface_view(svga, s);
 512
 513          if (s)
 514             svga->state.hw_draw.has_backed_views = TRUE;
 515
 516          /* s may be null here if the function failed */
 517          break;
 518       }
 519    }
 520
 521    if (s && s->view_id == SVGA3D_INVALID_ID) {
 522       SVGA3dResourceType resType;
 523       SVGA3dRenderTargetViewDesc desc;
 524       struct svga_texture *stex = svga_texture(s->base.texture);
 525
 526       if (stex->validated == FALSE) {
 527          assert(stex->handle);
 528
 529          /* We are about to render into a surface that has not been validated.
 530           * First invalidate the surface so that the device does not
 531           * need to update the host-side copy with the invalid
 532           * content when the associated mob is first bound to the surface.
 533           */
 534          svga->swc->surface_invalidate(svga->swc, stex->handle);
 535          stex->validated = TRUE;
 536       }
 537
 538       desc.tex.mipSlice = s->real_level;
 539       desc.tex.firstArraySlice = s->real_layer + s->real_zslice;
 540       desc.tex.arraySize =
 541          s->base.u.tex.last_layer - s->base.u.tex.first_layer + 1;
 542
 543       s->view_id = util_bitmask_add(svga->surface_view_id_bm);
 544
 545       resType = svga_resource_type(s->base.texture->target);
 546
 547       if (util_format_is_depth_or_stencil(s->base.format)) {
 548          ret = SVGA3D_vgpu10_DefineDepthStencilView(svga->swc,
 549                                                     s->view_id,
 550                                                     s->handle,
 551                                                     s->key.format,
 552                                                     resType,
 553                                                     &desc);
 554       }
 555       else {
 556          SVGA3dSurfaceFormat view_format = s->key.format;
 557          const struct svga_texture *stex = svga_texture(s->base.texture);
 558
 559          /* Can't create RGBA render target view of a RGBX surface so adjust
 560           * the view format.  We do something similar for texture samplers in
 561           * svga_validate_pipe_sampler_view().
 562           */
 563          if (view_format == SVGA3D_B8G8R8A8_UNORM &&
 564              (stex->key.format == SVGA3D_B8G8R8X8_UNORM ||
 565               stex->key.format == SVGA3D_B8G8R8X8_TYPELESS)) {
 566             view_format = SVGA3D_B8G8R8X8_UNORM;
 567          }
 568
 569          ret = SVGA3D_vgpu10_DefineRenderTargetView(svga->swc,
 570                                                     s->view_id,
 571                                                     s->handle,
 572                                                     view_format,
 573                                                     resType,
 574                                                     &desc);
 575       }
 576
 577       if (ret != PIPE_OK) {
 578          util_bitmask_clear(svga->surface_view_id_bm, s->view_id);
 579          s->view_id = SVGA3D_INVALID_ID;
 580          s = NULL;
 581       }
 582    }
 583
 584    SVGA_STATS_TIME_POP(svga_sws(svga));
 585
 586    return s ? &s->base : NULL;
 587 }
 588
 589
 590
 591 static void
 592 svga_surface_destroy(struct pipe_context *pipe,
 593                      struct pipe_surface *surf)
 594 {
 595    struct svga_context *svga = svga_context(pipe);
 596    struct svga_surface *s = svga_surface(surf);
 597    struct svga_texture *t = svga_texture(surf->texture);
 598    struct svga_screen *ss = svga_screen(surf->texture->screen);
 599    enum pipe_error ret = PIPE_OK;
 600
 601    SVGA_STATS_TIME_PUSH(ss->sws, SVGA_STATS_TIME_DESTROYSURFACE);
 602
 603    /* Destroy the backed view surface if it exists */
 604    if (s->backed) {
 605       svga_surface_destroy(pipe, &s->backed->base);
 606       s->backed = NULL;
 607    }
 608
 609    /* Destroy the surface handle if this is a backed handle and
 610     * it is not being cached in the texture.
 611     */
 612    if (s->handle != t->handle && s->handle != t->backed_handle) {
 613       SVGA_DBG(DEBUG_DMA, "unref sid %p (tex surface)\n", s->handle);
 614       svga_screen_surface_destroy(ss, &s->key, &s->handle);
 615    }
 616
 617    if (s->view_id != SVGA3D_INVALID_ID) {
 618       unsigned try;
 619
 620       /* The SVGA3D device will generate a device error if the
 621        * render target view or depth stencil view is destroyed from
 622        * a context other than the one it was created with.
 623        * Similar to shader resource view, in this case, we will skip
 624        * the destroy for now.
 625        */
 626       if (surf->context != pipe) {
 627          _debug_printf("context mismatch in %s\n", __func__);
 628       }
 629       else {
 630          assert(svga_have_vgpu10(svga));
 631          for (try = 0; try < 2; try++) {
 632             if (util_format_is_depth_or_stencil(s->base.format)) {
 633                ret = SVGA3D_vgpu10_DestroyDepthStencilView(svga->swc, s->view_id);
 634             }
 635             else {
 636                ret = SVGA3D_vgpu10_DestroyRenderTargetView(svga->swc, s->view_id);
 637             }
 638             if (ret == PIPE_OK)
 639                break;
 640             svga_context_flush(svga, NULL);
 641          }
 642          assert(ret == PIPE_OK);
 643          util_bitmask_clear(svga->surface_view_id_bm, s->view_id);
 644       }
 645    }
 646
 647    pipe_resource_reference(&surf->texture, NULL);
 648    FREE(surf);
 649
 650    svga->hud.num_surface_views--;
 651    SVGA_STATS_TIME_POP(ss->sws);
 652 }
 653
 654
 655 static void
 656 svga_mark_surface_dirty(struct pipe_surface *surf)
 657 {
 658    struct svga_surface *s = svga_surface(surf);
 659    struct svga_texture *tex = svga_texture(surf->texture);
 660
 661    if (!s->dirty) {
 662       s->dirty = TRUE;
 663
 664       if (s->handle == tex->handle) {
 665          /* hmm so 3d textures always have all their slices marked ? */
 666          svga_define_texture_level(tex, surf->u.tex.first_layer,
 667                                    surf->u.tex.level);
 668       }
 669       else {
 670          /* this will happen later in svga_propagate_surface */
 671       }
 672    }
 673
 674    /* Increment the view_age and texture age for this surface's mipmap
 675     * level so that any sampler views into the texture are re-validated too.
 676     * Note: we age the texture for backed surface view only when the
 677     *       backed surface is propagated to the original surface.
 678     */
 679    if (s->handle == tex->handle)
 680       svga_age_texture_view(tex, surf->u.tex.level);
 681 }
 682
 683
 684 void
 685 svga_mark_surfaces_dirty(struct svga_context *svga)
 686 {
 687    unsigned i;
 688    struct svga_hw_clear_state *hw = &svga->state.hw_clear;
 689
 690    if (svga_have_vgpu10(svga)) {
 691
 692       /* For VGPU10, mark the dirty bit in the rendertarget/depth stencil view surface.
 693        * This surface can be the backed surface.
 694        */
 695       for (i = 0; i < hw->num_rendertargets; i++) {
 696          if (hw->rtv[i])
 697             svga_mark_surface_dirty(hw->rtv[i]);
 698       }
 699       if (hw->dsv)
 700          svga_mark_surface_dirty(hw->dsv);
 701    } else {
 702       for (i = 0; i < svga->curr.framebuffer.nr_cbufs; i++) {
 703          if (svga->curr.framebuffer.cbufs[i])
 704             svga_mark_surface_dirty(svga->curr.framebuffer.cbufs[i]);
 705       }
 706       if (svga->curr.framebuffer.zsbuf)
 707          svga_mark_surface_dirty(svga->curr.framebuffer.zsbuf);
 708    }
 709 }
 710
 711
 712 /**
 713  * Progagate any changes from surfaces to texture.
 714  * pipe is optional context to inline the blit command in.
 715  */
 716 void
 717 svga_propagate_surface(struct svga_context *svga, struct pipe_surface *surf,
 718                        boolean reset)
 719 {
 720    struct svga_surface *s = svga_surface(surf);
 721    struct svga_texture *tex = svga_texture(surf->texture);
 722    struct svga_screen *ss = svga_screen(surf->texture->screen);
 723
 724    if (!s->dirty)
 725       return;
 726
 727    SVGA_STATS_TIME_PUSH(ss->sws, SVGA_STATS_TIME_PROPAGATESURFACE);
 728
 729    /* Reset the dirty flag if specified. This is to ensure that
 730     * the dirty flag will not be reset and stay unset when the backing
 731     * surface is still being bound and rendered to.
 732     * The reset flag will be set to TRUE when the surface is propagated
 733     * and will be unbound.
 734     */
 735    s->dirty = !reset;
 736
 737    ss->texture_timestamp++;
 738    svga_age_texture_view(tex, surf->u.tex.level);
 739
 740    if (s->handle != tex->handle) {
 741       unsigned zslice, layer;
 742       unsigned nlayers = 1;
 743       unsigned i;
 744
 745       if (surf->texture->target == PIPE_TEXTURE_CUBE) {
 746          zslice = 0;
 747          layer = surf->u.tex.first_layer;
 748       }
 749       else if (surf->texture->target == PIPE_TEXTURE_1D_ARRAY ||
 750                surf->texture->target == PIPE_TEXTURE_2D_ARRAY) {
 751          zslice = 0;
 752          layer = surf->u.tex.first_layer;
 753          nlayers = surf->u.tex.last_layer - surf->u.tex.first_layer + 1;
 754       }
 755       else {
 756          zslice = surf->u.tex.first_layer;
 757          layer = 0;
 758       }
 759
 760       SVGA_DBG(DEBUG_VIEWS,
 761                "Propagate surface %p to resource %p, level %u\n",
 762                surf, tex, surf->u.tex.level);
 763       for (i = 0; i < nlayers; i++) {
 764          svga_texture_copy_handle(svga,
 765                                   s->handle, 0, 0, 0, s->real_level,
 766                                   s->real_layer + i,
 767                                   tex->handle, 0, 0, zslice, surf->u.tex.level,
 768                                   layer + i,
 769                                   u_minify(tex->b.b.width0, surf->u.tex.level),
 770                                   u_minify(tex->b.b.height0, surf->u.tex.level),
 771                                   1);
 772          svga_define_texture_level(tex, layer + i, surf->u.tex.level);
 773       }
 774
 775       /* Sync the surface view age with the texture age */
 776       s->age = tex->age;
 777
 778       /* If this backed surface is cached in the texture,
 779        * update the backed age as well.
 780        */
 781       if (tex->backed_handle == s->handle) {
 782          tex->backed_age = tex->age;
 783       }
 784    }
 785
 786    SVGA_STATS_TIME_POP(ss->sws);
 787 }
 788
 789
 790 /**
 791  * If any of the render targets are in backing texture views, propagate any
 792  * changes to them back to the original texture.
 793  */
 794 void
 795 svga_propagate_rendertargets(struct svga_context *svga)
 796 {
 797    unsigned i;
 798
 799    /* Early exit if there is no backing texture views in use */
 800    if (!svga->state.hw_draw.has_backed_views)
 801       return;
 802
 803    /* Note that we examine the svga->state.hw_draw.framebuffer surfaces,
 804     * not the svga->curr.framebuffer surfaces, because it's the former
 805     * surfaces which may be backing surface views (the actual render targets).
 806     */
 807    for (i = 0; i < svga->state.hw_clear.num_rendertargets; i++) {
 808       struct pipe_surface *s = svga->state.hw_clear.rtv[i];
 809       if (s) {
 810          svga_propagate_surface(svga, s, FALSE);
 811       }
 812    }
 813
 814    if (svga->state.hw_clear.dsv) {
 815       svga_propagate_surface(svga, svga->state.hw_clear.dsv, FALSE);
 816    }
 817 }
 818
 819
 820 /**
 821  * Check if we should call svga_propagate_surface on the surface.
 822  */
 823 boolean
 824 svga_surface_needs_propagation(const struct pipe_surface *surf)
 825 {
 826    const struct svga_surface *s = svga_surface_const(surf);
 827    struct svga_texture *tex = svga_texture(surf->texture);
 828
 829    return s->dirty && s->handle != tex->handle;
 830 }
 831
 832
 833 static void
 834 svga_get_sample_position(struct pipe_context *context,
 835                          unsigned sample_count, unsigned sample_index,
 836                          float *pos_out)
 837 {
 838    /* We can't actually query the device to learn the sample positions.
 839     * These were grabbed from nvidia's driver.
 840     */
 841    static const float pos1[1][2] = {
 842       { 0.5, 0.5 }
 843    };
 844    static const float pos4[4][2] = {
 845       { 0.375000, 0.125000 },
 846       { 0.875000, 0.375000 },
 847       { 0.125000, 0.625000 },
 848       { 0.625000, 0.875000 }
 849    };
 850    static const float pos8[8][2] = {
 851       { 0.562500, 0.312500 },
 852       { 0.437500, 0.687500 },
 853       { 0.812500, 0.562500 },
 854       { 0.312500, 0.187500 },
 855       { 0.187500, 0.812500 },
 856       { 0.062500, 0.437500 },
 857       { 0.687500, 0.937500 },
 858       { 0.937500, 0.062500 }
 859    };
 860    static const float pos16[16][2] = {
 861       { 0.187500, 0.062500 },
 862       { 0.437500, 0.187500 },
 863       { 0.062500, 0.312500 },
 864       { 0.312500, 0.437500 },
 865       { 0.687500, 0.062500 },
 866       { 0.937500, 0.187500 },
 867       { 0.562500, 0.312500 },
 868       { 0.812500, 0.437500 },
 869       { 0.187500, 0.562500 },
 870       { 0.437500, 0.687500 },
 871       { 0.062500, 0.812500 },
 872       { 0.312500, 0.937500 },
 873       { 0.687500, 0.562500 },
 874       { 0.937500, 0.687500 },
 875       { 0.562500, 0.812500 },
 876       { 0.812500, 0.937500 }
 877    };
 878    const float (*positions)[2];
 879
 880    switch (sample_count) {
 881    case 4:
 882       positions = pos4;
 883       break;
 884    case 8:
 885       positions = pos8;
 886       break;
 887    case 16:
 888       positions = pos16;
 889       break;
 890    default:
 891       positions = pos1;
 892    }
 893
 894    pos_out[0] = positions[sample_index][0];
 895    pos_out[1] = positions[sample_index][1];
 896 }
 897
 898
 899 void
 900 svga_init_surface_functions(struct svga_context *svga)
 901 {
 902    svga->pipe.create_surface = svga_create_surface;
 903    svga->pipe.surface_destroy = svga_surface_destroy;
 904    svga->pipe.get_sample_position = svga_get_sample_position;
 905 }