src/gallium/drivers/svga/svga_pipe_blit.c

   1 /**********************************************************
   2  * Copyright 2008-2017 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_context.h"
  27 #include "svga_debug.h"
  28 #include "svga_cmd.h"
  29 #include "svga_format.h"
  30 #include "svga_resource_buffer.h"
  31 #include "svga_resource_texture.h"
  32 #include "svga_surface.h"
  33
  34 //#include "util/u_blit_sw.h"
  35 #include "util/u_format.h"
  36 #include "util/u_surface.h"
  37
  38 #define FILE_DEBUG_FLAG DEBUG_BLIT
  39
  40
  41 /**
  42  * Build a struct pipe_blit_info object from the arguments used by the
  43  * pipe::resource_copy_region() function.
  44  */
  45 static void
  46 build_blit_info(struct pipe_resource *dst_tex,
  47                 unsigned dst_level,
  48                 unsigned dst_x,
  49                 unsigned dst_y,
  50                 unsigned dst_z,
  51                 struct pipe_resource *src_tex,
  52                 unsigned src_level,
  53                 const struct pipe_box *src_box,
  54                 struct pipe_blit_info *blit)
  55 {
  56    memset(blit, 0, sizeof(*blit));
  57
  58    blit->src.format = src_tex->format;
  59    blit->dst.format = dst_tex->format;
  60
  61    blit->mask = util_format_get_mask(blit->dst.format);
  62    blit->filter = PIPE_TEX_FILTER_NEAREST;
  63    blit->src.resource = src_tex;
  64    blit->src.level = src_level;
  65    blit->dst.resource = dst_tex;
  66    blit->dst.level = dst_level;
  67    blit->src.box = *src_box;
  68    u_box_3d(dst_x, dst_y, dst_z, src_box->width, src_box->height,
  69             src_box->depth, &blit->dst.box);
  70 }
  71
  72
  73 /**
  74  * Copy when src texture and dst texture are same with IntraSurfaceCopy
  75  * command.
  76  */
  77 static void
  78 intra_surface_copy(struct svga_context *svga, struct pipe_resource *tex,
  79                     unsigned src_x, unsigned src_y, unsigned src_z,
  80                     unsigned level, unsigned layer_face,
  81                     unsigned dst_x, unsigned dst_y, unsigned dst_z,
  82                     unsigned width, unsigned height, unsigned depth)
  83 {
  84    enum pipe_error ret;
  85    SVGA3dCopyBox box;
  86    struct svga_texture *stex;
  87
  88    stex = svga_texture(tex);
  89
  90    box.x = dst_x;
  91    box.y = dst_y;
  92    box.z = dst_z;
  93    box.w = width;
  94    box.h = height;
  95    box.d = depth;
  96    box.srcx = src_x;
  97    box.srcy = src_y;
  98    box.srcz = src_z;
  99
 100    ret = SVGA3D_vgpu10_IntraSurfaceCopy(svga->swc,
 101                                  stex->handle, level, layer_face,  &box);
 102    if (ret != PIPE_OK) {
 103       svga_context_flush(svga, NULL);
 104    ret = SVGA3D_vgpu10_IntraSurfaceCopy(svga->swc,
 105                                  stex->handle, level, layer_face, &box);
 106       assert(ret == PIPE_OK);
 107    }
 108
 109    /* Mark the texture subresource as rendered-to. */
 110    svga_set_texture_rendered_to(stex, layer_face, level);
 111 }
 112
 113 /**
 114  * Copy an image between textures with the vgpu10 CopyRegion command.
 115  */
 116 static void
 117 copy_region_vgpu10(struct svga_context *svga, struct pipe_resource *src_tex,
 118                     unsigned src_x, unsigned src_y, unsigned src_z,
 119                     unsigned src_level, unsigned src_layer_face,
 120                     struct pipe_resource *dst_tex,
 121                     unsigned dst_x, unsigned dst_y, unsigned dst_z,
 122                     unsigned dst_level, unsigned dst_layer_face,
 123                     unsigned width, unsigned height, unsigned depth)
 124 {
 125    enum pipe_error ret;
 126    uint32 srcSubResource, dstSubResource;
 127    struct svga_texture *dtex, *stex;
 128    SVGA3dCopyBox box;
 129
 130    stex = svga_texture(src_tex);
 131    dtex = svga_texture(dst_tex);
 132
 133    svga_surfaces_flush(svga);
 134
 135    box.x = dst_x;
 136    box.y = dst_y;
 137    box.z = dst_z;
 138    box.w = width;
 139    box.h = height;
 140    box.d = depth;
 141    box.srcx = src_x;
 142    box.srcy = src_y;
 143    box.srcz = src_z;
 144
 145    srcSubResource = src_layer_face * (src_tex->last_level + 1) + src_level;
 146    dstSubResource = dst_layer_face * (dst_tex->last_level + 1) + dst_level;
 147
 148    ret = SVGA3D_vgpu10_PredCopyRegion(svga->swc,
 149                                       dtex->handle, dstSubResource,
 150                                       stex->handle, srcSubResource, &box);
 151    if (ret != PIPE_OK) {
 152       svga_context_flush(svga, NULL);
 153       ret = SVGA3D_vgpu10_PredCopyRegion(svga->swc,
 154                                          dtex->handle, dstSubResource,
 155                                          stex->handle, srcSubResource, &box);
 156       assert(ret == PIPE_OK);
 157    }
 158
 159    /* Mark the texture subresource as defined. */
 160    svga_define_texture_level(dtex, dst_layer_face, dst_level);
 161
 162    /* Mark the texture subresource as rendered-to. */
 163    svga_set_texture_rendered_to(dtex, dst_layer_face, dst_level);
 164 }
 165
 166
 167 /**
 168  * Fallback to the copy region utility which uses map/memcpy for the copy
 169  */
 170 static void
 171 copy_region_fallback(struct svga_context *svga,
 172                      struct pipe_resource *dst_tex, unsigned dst_level,
 173                      unsigned dstx, unsigned dsty, unsigned dstz,
 174                      struct pipe_resource *src_tex, unsigned src_level,
 175                      const struct pipe_box *src_box)
 176 {
 177    struct svga_winsys_screen *sws = svga_screen(svga->pipe.screen)->sws;
 178
 179    SVGA_STATS_TIME_PUSH(sws, SVGA_STATS_TIME_COPYREGIONFALLBACK);
 180    util_resource_copy_region(&svga->pipe, dst_tex, dst_level, dstx,
 181                              dsty, dstz, src_tex, src_level, src_box);
 182    SVGA_STATS_TIME_POP(sws);
 183    (void) sws;
 184 }
 185
 186
 187 /**
 188  * Whether the layer_face index is given by the Z coordinate.
 189  */
 190 static bool
 191 has_layer_face_index_in_z(enum pipe_texture_target target)
 192 {
 193    if (target == PIPE_TEXTURE_CUBE ||
 194        target == PIPE_TEXTURE_1D_ARRAY ||
 195        target == PIPE_TEXTURE_2D_ARRAY ||
 196        target == PIPE_TEXTURE_CUBE_ARRAY)
 197       return true;
 198    else
 199       return false;
 200 }
 201
 202
 203 /**
 204  * For some texture types, we need to move the z (slice) coordinate
 205  * to the layer value.  For example, to select the z=3 slice of a 2D ARRAY
 206  * texture, we need to use layer=3 and set z=0.
 207  */
 208 static void
 209 adjust_z_layer(enum pipe_texture_target target,
 210                int z_in, unsigned *layer_out, unsigned *z_out)
 211 {
 212    if (target == PIPE_TEXTURE_CUBE ||
 213        target == PIPE_TEXTURE_1D_ARRAY ||
 214        target == PIPE_TEXTURE_2D_ARRAY ||
 215        target == PIPE_TEXTURE_CUBE_ARRAY) {
 216       *layer_out = z_in;
 217       *z_out = 0;
 218    }
 219    else {
 220       *layer_out = 0;
 221       *z_out = z_in;
 222    }
 223 }
 224
 225
 226 /**
 227  * Are the given SVGA3D formats compatible, in terms of vgpu10's
 228  * PredCopyRegion() command?
 229  */
 230 static bool
 231 formats_compatible(const struct svga_screen *ss,
 232                    SVGA3dSurfaceFormat src_svga_fmt,
 233                    SVGA3dSurfaceFormat dst_svga_fmt)
 234 {
 235    src_svga_fmt = svga_typeless_format(src_svga_fmt);
 236    dst_svga_fmt = svga_typeless_format(dst_svga_fmt);
 237
 238    return src_svga_fmt == dst_svga_fmt;
 239 }
 240
 241
 242 /**
 243  * Check whether the blending is enabled or not
 244  */
 245 static bool
 246 is_blending_enabled(struct svga_context *svga,
 247                     const struct pipe_blit_info *blit)
 248 {
 249    bool blend_enable = false;
 250    int i;
 251    if (svga->curr.blend) {
 252       if (svga->curr.blend->independent_blend_enable) {
 253          for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 254             if (svga->curr.framebuffer.cbufs[i]->texture == blit->dst.resource) {
 255                if (svga->curr.blend->rt[i].blend_enable) {
 256                   blend_enable = true;
 257                }
 258                break;
 259             }
 260          }
 261       }
 262       else {
 263          if (svga->curr.blend->rt[0].blend_enable)
 264             blend_enable = true;
 265       }
 266    }
 267    return blend_enable;
 268 }
 269
 270
 271 /**
 272  * If GL_FRAMEBUFFER_SRGB is enabled, then output colorspace is
 273  * expected to be sRGB if blending is not enabled.
 274  * If GL_FRAMEBUFFER_SRGB is disabled, then we can use
 275  * copy_region_vgpu10()
 276  * Following table basically tells when copy_region_vgpu10 can be
 277  * used if GL_FRAMEBUFFER_SRGB is enabled.
 278  * ______________________________________________________________
 279  *  | src fmt     | dst_fmt   | blending  |Can use       |
 280  *  |             |           |           |copy_region   |
 281  * ______________________________________________________________
 282  *  | linear      | linear    |   N       |     Y        |
 283  *  | linear      | linear    |   Y       |     Y        |
 284  *  | linear      | sRGB      |   N       |     N        |
 285  *  | linear      | sRGB      |   Y       |     Y        |
 286  *  | sRGB        | linear    |   N       |     N        |
 287  *  | sRGB        | linear    |   Y       |     N        |
 288  *  | sRGB        | sRGB      |   N       |     Y        |
 289  *  | sRGB        | sRGB      |   Y       |     N        |
 290  * ______________________________________________________________
 291  *
 292  */
 293 static bool
 294 check_blending_and_srgb_cond(struct svga_context *svga,
 295                              const struct pipe_blit_info *blit)
 296 {
 297    enum pipe_format sFmt = blit->src.format;
 298    enum pipe_format dFmt = blit->dst.format;
 299
 300    if (is_blending_enabled(svga, blit)) {
 301       if (!util_format_is_srgb(blit->src.format))
 302          return true;
 303    }
 304    else {
 305       if (util_format_is_srgb(sFmt) && util_format_is_srgb(dFmt))
 306          return true;
 307       else if (!util_format_is_srgb(sFmt)){
 308          if (!util_format_is_srgb(dFmt))
 309             return true;
 310          else {
 311            /**
 312             * State tracker converts all sRGB src blit format
 313             * to linear if GL_FRAMEBUFFER_SRGB is disabled.
 314             * So if src resource format is sRGB and
 315             * blit format is linear then it means,
 316             * GL_FRAMEBUFFER_SRGB is disabled. In this case also
 317             * we can use copy_region_vgpu10().
 318             */
 319
 320             if (util_format_is_srgb(blit->src.resource->format))
 321                return true;
 322          }
 323       }
 324    }
 325    return false;
 326 }
 327
 328 /**
 329  * Do common checks for svga surface copy.
 330  */
 331 static bool
 332 can_blit_via_svga_copy_region(struct svga_context *svga,
 333                               const struct pipe_blit_info *blit_info)
 334 {
 335    struct pipe_blit_info local_blit = *blit_info;
 336
 337    /* First basic checks to catch incompatibilities in new or locally unchecked
 338     * struct pipe_blit_info members but bypass the format check here.
 339     * Also since util_can_blit_via_copy_region() requires a dimension match,
 340     * PIPE_FILTER_LINEAR should be equal to PIPE_FILTER_NEAREST.
 341     */
 342    local_blit.dst.format = local_blit.src.format;
 343    if (local_blit.filter == PIPE_TEX_FILTER_LINEAR)
 344       local_blit.filter = PIPE_TEX_FILTER_NEAREST;
 345    if (!util_can_blit_via_copy_region(&local_blit, TRUE))
 346       return false;
 347
 348    /* For depth+stencil formats, copy with mask != PIPE_MASK_ZS is not
 349     * supported
 350     */
 351    if (util_format_is_depth_and_stencil(blit_info->src.format) &&
 352       blit_info->mask != (PIPE_MASK_ZS))
 353      return false;
 354
 355    return check_blending_and_srgb_cond(svga, blit_info);
 356 }
 357
 358
 359 static bool
 360 can_blit_via_intra_surface_copy(struct svga_context *svga,
 361                                 const struct pipe_blit_info *blit_info)
 362 {
 363    struct svga_texture *dtex, *stex;
 364    struct svga_winsys_screen *sws = svga_screen(svga->pipe.screen)->sws;
 365
 366    if (!svga_have_vgpu10(svga))
 367       return false;
 368
 369    if (!sws->have_intra_surface_copy)
 370       return false;
 371
 372    stex = svga_texture(blit_info->src.resource);
 373    dtex = svga_texture(blit_info->dst.resource);
 374
 375    if (stex->handle != dtex->handle)
 376       return false;
 377
 378    if (blit_info->src.level != blit_info->dst.level)
 379       return false;
 380
 381    if (has_layer_face_index_in_z(blit_info->src.resource->target)){
 382       if (blit_info->src.box.z != blit_info->dst.box.z)
 383          return false;
 384    }
 385
 386    /* check that the blit src/dst regions are same size, no flipping, etc. */
 387    if (blit_info->src.box.width != blit_info->dst.box.width ||
 388        blit_info->src.box.height != blit_info->dst.box.height)
 389       return false;
 390
 391    /* For depth+stencil formats, copy with mask != PIPE_MASK_ZS is not
 392     * supported
 393     */
 394    if (util_format_is_depth_and_stencil(blit_info->src.format) &&
 395       blit_info->mask != (PIPE_MASK_ZS))
 396      return false;
 397
 398    if (blit_info->alpha_blend ||
 399        (svga->render_condition && blit_info->render_condition_enable) ||
 400        blit_info->scissor_enable)
 401       return false;
 402
 403    return !(is_blending_enabled(svga, blit_info) &&
 404            util_format_is_srgb(blit_info->src.resource->format));
 405 }
 406
 407
 408 /**
 409  * The state tracker implements some resource copies with blits (for
 410  * GL_ARB_copy_image).  This function checks if we should really do the blit
 411  * with a VGPU10 CopyRegion command or software fallback (for incompatible
 412  * src/dst formats).
 413  */
 414 static bool
 415 can_blit_via_copy_region_vgpu10(struct svga_context *svga,
 416                                 const struct pipe_blit_info *blit_info)
 417 {
 418    struct svga_texture *dtex, *stex;
 419
 420    /* can't copy between different resource types */
 421    if (svga_resource_type(blit_info->src.resource->target) !=
 422        svga_resource_type(blit_info->dst.resource->target))
 423       return false;
 424
 425    stex = svga_texture(blit_info->src.resource);
 426    dtex = svga_texture(blit_info->dst.resource);
 427
 428    if (!svga_have_vgpu10(svga))
 429       return false;
 430
 431    if (stex->handle == dtex->handle)
 432       return false;
 433
 434    return formats_compatible(svga_screen(svga->pipe.screen),
 435                              stex->key.format,
 436                              dtex->key.format);
 437 }
 438
 439
 440 /**
 441  * Check whether we can blit using the surface_copy command.
 442  */
 443 static bool
 444 can_blit_via_surface_copy(struct svga_context *svga,
 445                           const struct pipe_blit_info *blit_info)
 446 {
 447    struct svga_texture *dtex, *stex;
 448
 449    /* Mimic the format tests in util_can_blit_via_copy_region(), but
 450     * skip the other tests that have already been performed.
 451     */
 452    if (blit_info->src.format != blit_info->dst.format) {
 453       const struct util_format_description *src_desc, *dst_desc;
 454
 455       src_desc = util_format_description(blit_info->src.resource->format);
 456       dst_desc = util_format_description(blit_info->dst.resource->format);
 457
 458       if (blit_info->src.resource->format != blit_info->src.format ||
 459           blit_info->dst.resource->format != blit_info->dst.format ||
 460           !util_is_format_compatible(src_desc, dst_desc))
 461          return false;
 462    }
 463
 464    if (svga->render_condition && blit_info->render_condition_enable)
 465       return false;
 466
 467    /* can't copy between different resource types */
 468    if (svga_resource_type(blit_info->src.resource->target) !=
 469        svga_resource_type(blit_info->dst.resource->target))
 470       return false;
 471
 472    stex = svga_texture(blit_info->src.resource);
 473    dtex = svga_texture(blit_info->dst.resource);
 474
 475    if (stex->handle == dtex->handle)
 476       return false;
 477
 478    /*
 479     * This is what we've been using before, but it can probably be
 480     * relaxed. The device checks are less stringent.
 481     */
 482    return (stex->b.b.format == dtex->b.b.format);
 483 }
 484
 485
 486 /**
 487  * Try region copy using one of the region copy commands
 488  */
 489 static bool
 490 try_copy_region(struct svga_context *svga,
 491                 const struct pipe_blit_info *blit)
 492 {
 493    unsigned src_layer_face, src_z, dst_layer_face, dst_z;
 494
 495    if (!can_blit_via_svga_copy_region(svga, blit))
 496       return false;
 497
 498    adjust_z_layer(blit->src.resource->target, blit->src.box.z,
 499                   &src_layer_face, &src_z);
 500
 501    adjust_z_layer(blit->dst.resource->target, blit->dst.box.z,
 502                   &dst_layer_face, &dst_z);
 503
 504    if (can_blit_via_copy_region_vgpu10(svga, blit)) {
 505       svga_toggle_render_condition(svga, blit->render_condition_enable, FALSE);
 506
 507       copy_region_vgpu10(svga,
 508                          blit->src.resource,
 509                          blit->src.box.x, blit->src.box.y, src_z,
 510                          blit->src.level, src_layer_face,
 511                          blit->dst.resource,
 512                          blit->dst.box.x, blit->dst.box.y, dst_z,
 513                          blit->dst.level, dst_layer_face,
 514                          blit->src.box.width, blit->src.box.height,
 515                          blit->src.box.depth);
 516
 517       svga_toggle_render_condition(svga, blit->render_condition_enable, TRUE);
 518
 519       return true;
 520    }
 521
 522    if (can_blit_via_surface_copy(svga, blit)) {
 523       struct svga_texture *stex = svga_texture(blit->src.resource);
 524       struct svga_texture *dtex = svga_texture(blit->dst.resource);
 525
 526       svga_surfaces_flush(svga);
 527
 528       svga_texture_copy_handle(svga,
 529                                stex->handle,
 530                                blit->src.box.x, blit->src.box.y, src_z,
 531                                blit->src.level, src_layer_face,
 532                                dtex->handle,
 533                                blit->dst.box.x, blit->dst.box.y, dst_z,
 534                                blit->dst.level, dst_layer_face,
 535                                blit->src.box.width, blit->src.box.height,
 536                                blit->src.box.depth);
 537
 538       svga_define_texture_level(dtex, dst_layer_face, blit->dst.level);
 539       svga_set_texture_rendered_to(dtex, dst_layer_face, blit->dst.level);
 540       return true;
 541    }
 542
 543    if (can_blit_via_intra_surface_copy(svga, blit)) {
 544       intra_surface_copy(svga,
 545                          blit->src.resource,
 546                          blit->src.box.x, blit->src.box.y, src_z,
 547                          blit->src.level, src_layer_face,
 548                          blit->dst.box.x, blit->dst.box.y, dst_z,
 549                          blit->src.box.width, blit->src.box.height,
 550                          blit->src.box.depth);
 551       return true;
 552    }
 553
 554    return false;
 555 }
 556
 557
 558 /**
 559  * A helper function to determine if the specified view format
 560  * is compatible with the surface format.
 561  * It is compatible if the view format is the same as the surface format,
 562  * or the associated svga format for the surface is a typeless format, or
 563  * the view format is an adjusted format for BGRX/BGRA resource.
 564  */
 565 static bool
 566 is_view_format_compatible(enum pipe_format surf_fmt,
 567                           SVGA3dSurfaceFormat surf_svga_fmt,
 568                           enum pipe_format view_fmt)
 569 {
 570    if (surf_fmt == view_fmt || svga_format_is_typeless(surf_svga_fmt))
 571       return true;
 572
 573    if ((surf_fmt == PIPE_FORMAT_B8G8R8X8_UNORM &&
 574         view_fmt == PIPE_FORMAT_B8G8R8A8_UNORM) ||
 575        (surf_fmt == PIPE_FORMAT_B8G8R8A8_UNORM &&
 576         view_fmt == PIPE_FORMAT_B8G8R8X8_UNORM))
 577       return true;
 578
 579    return false;
 580 }
 581
 582
 583 /**
 584  * Try issuing a quad blit.
 585  */
 586 static bool
 587 try_blit(struct svga_context *svga, const struct pipe_blit_info *blit_info)
 588 {
 589    struct svga_winsys_screen *sws = svga_screen(svga->pipe.screen)->sws;
 590    struct pipe_resource *src = blit_info->src.resource;
 591    struct pipe_resource *dst = blit_info->dst.resource;
 592    struct pipe_resource *newSrc = NULL;
 593    struct pipe_resource *newDst = NULL;
 594    bool can_create_src_view;
 595    bool can_create_dst_view;
 596    bool ret = true;
 597    struct pipe_blit_info blit = *blit_info;
 598
 599    SVGA_STATS_TIME_PUSH(sws, SVGA_STATS_TIME_BLITBLITTER);
 600
 601    /**
 602     * Avoid using util_blitter_blit() for these depth formats on non-vgpu10
 603     * devices because these depth formats only support comparison mode
 604     * and not ordinary sampling.
 605     */
 606    if (!svga_have_vgpu10(svga) && (blit.mask & PIPE_MASK_Z) &&
 607        (svga_texture(dst)->key.format == SVGA3D_Z_D16 ||
 608        svga_texture(dst)->key.format == SVGA3D_Z_D24X8 ||
 609        svga_texture(dst)->key.format == SVGA3D_Z_D24S8)) {
 610       ret = false;
 611       goto done;
 612   }
 613
 614    /**
 615     * If format is srgb and blend is enabled then color values need
 616     * to be converted into linear format.
 617     */
 618    if (is_blending_enabled(svga, &blit)) {
 619       blit.src.format = util_format_linear(blit.src.format);
 620       blit.dst.format = util_format_linear(blit.dst.format);
 621    }
 622
 623    /* Check if we can create shader resource view and
 624     * render target view for the quad blitter to work
 625     */
 626    can_create_src_view =
 627       is_view_format_compatible(src->format, svga_texture(src)->key.format,
 628                                 blit.src.format);
 629
 630    can_create_dst_view =
 631       is_view_format_compatible(dst->format, svga_texture(dst)->key.format,
 632                                 blit.dst.format);
 633
 634    if ((blit.mask & PIPE_MASK_S) ||
 635        ((!can_create_dst_view || !can_create_src_view)
 636         && !svga_have_vgpu10(svga))) {
 637       /* Can't do stencil blits with textured quad blitter */
 638       debug_warn_once("using software stencil blit");
 639       ret = false;
 640       goto done;
 641    }
 642
 643    if (!util_blitter_is_blit_supported(svga->blitter, &blit)) {
 644       debug_printf("svga: blit unsupported %s -> %s\n",
 645                    util_format_short_name(blit.src.resource->format),
 646                    util_format_short_name(blit.dst.resource->format));
 647       ret = false;
 648       goto done;
 649    }
 650
 651    /* XXX turn off occlusion and streamout queries */
 652
 653    util_blitter_save_vertex_buffer_slot(svga->blitter, svga->curr.vb);
 654    util_blitter_save_vertex_elements(svga->blitter, (void*)svga->curr.velems);
 655    util_blitter_save_vertex_shader(svga->blitter, svga->curr.vs);
 656    util_blitter_save_geometry_shader(svga->blitter, svga->curr.user_gs);
 657    util_blitter_save_so_targets(svga->blitter, svga->num_so_targets,
 658                      (struct pipe_stream_output_target**)svga->so_targets);
 659    util_blitter_save_rasterizer(svga->blitter, (void*)svga->curr.rast);
 660    util_blitter_save_viewport(svga->blitter, &svga->curr.viewport);
 661    util_blitter_save_scissor(svga->blitter, &svga->curr.scissor);
 662    util_blitter_save_fragment_shader(svga->blitter, svga->curr.fs);
 663    util_blitter_save_blend(svga->blitter, (void*)svga->curr.blend);
 664    util_blitter_save_depth_stencil_alpha(svga->blitter,
 665                                          (void*)svga->curr.depth);
 666    util_blitter_save_stencil_ref(svga->blitter, &svga->curr.stencil_ref);
 667    util_blitter_save_sample_mask(svga->blitter, svga->curr.sample_mask);
 668    util_blitter_save_framebuffer(svga->blitter, &svga->curr.framebuffer);
 669    util_blitter_save_fragment_sampler_states(svga->blitter,
 670                      svga->curr.num_samplers[PIPE_SHADER_FRAGMENT],
 671                      (void**)svga->curr.sampler[PIPE_SHADER_FRAGMENT]);
 672    util_blitter_save_fragment_sampler_views(svga->blitter,
 673                      svga->curr.num_sampler_views[PIPE_SHADER_FRAGMENT],
 674                      svga->curr.sampler_views[PIPE_SHADER_FRAGMENT]);
 675
 676    if (!can_create_src_view) {
 677       struct pipe_resource template;
 678       struct pipe_blit_info copy_region_blit;
 679
 680       /**
 681        * If the source blit format is not compatible with the source resource
 682        * format, we will not be able to create a shader resource view.
 683        * In order to avoid falling back to software blit, we'll create
 684        * a new resource in the blit format, and use DXCopyResource to
 685        * copy from the original format to the new format. The new
 686        * resource will be used for the blit in util_blitter_blit().
 687        */
 688       template = *src;
 689       template.format = blit.src.format;
 690       newSrc = svga_texture_create(svga->pipe.screen, &template);
 691       if (newSrc == NULL) {
 692          debug_printf("svga_blit: fails to create temporary src\n");
 693          ret = false;
 694          goto done;
 695       }
 696
 697       /* increment the mksStats for blitter with extra copy */
 698       SVGA_STATS_COUNT_INC(sws, SVGA_STATS_COUNT_BLITBLITTERCOPY);
 699       build_blit_info(newSrc,
 700                       blit.src.level, blit.src.box.x,
 701                       blit.src.box.y, blit.src.box.z,
 702                       blit.src.resource,
 703                       blit.src.level, &blit.src.box,
 704                       &copy_region_blit);
 705       if (!try_copy_region(svga, &copy_region_blit)) {
 706          debug_printf("svga: Source blit format conversion failed.\n");
 707          ret = false;
 708          goto done;
 709       }
 710
 711       blit.src.resource = newSrc;
 712    }
 713
 714    if (!can_create_dst_view) {
 715       struct pipe_resource template;
 716
 717       /*
 718        * If the destination blit format is not compatible with the destination
 719        * resource format, we will not be able to create a render target view.
 720        * In order to avoid falling back to software blit, we'll create
 721        * a new resource in the blit format, and use DXPredCopyRegion
 722        * after the blit to copy from the blit format back to the resource
 723        * format.
 724        */
 725       template = *dst;
 726       template.format = blit.dst.format;
 727       newDst = svga_texture_create(svga->pipe.screen, &template);
 728       if (newDst == NULL) {
 729          debug_printf("svga_blit: fails to create temporary dst\n");
 730          ret = false;
 731          goto done;
 732       }
 733
 734       blit.dst.resource = newDst;
 735    }
 736
 737    svga_toggle_render_condition(svga, blit.render_condition_enable, FALSE);
 738
 739    util_blitter_blit(svga->blitter, &blit);
 740
 741    svga_toggle_render_condition(svga, blit.render_condition_enable, TRUE);
 742
 743    if (blit.dst.resource != dst) {
 744       struct pipe_blit_info copy_region_blit;
 745
 746       /* increment the mksStats for blitter with extra copy */
 747       SVGA_STATS_COUNT_INC(sws, SVGA_STATS_COUNT_BLITBLITTERCOPY);
 748
 749       /*
 750        * A temporary resource was created for the blit, we need to
 751        * copy from the temporary resource back to the original destination.
 752        */
 753       build_blit_info(dst,
 754                       blit.dst.level, blit.dst.box.x,
 755                       blit.dst.box.y, blit.dst.box.z,
 756                       newDst,
 757                       blit.dst.level, &blit.dst.box,
 758                       &copy_region_blit);
 759       if (!try_copy_region(svga, &copy_region_blit)) {
 760          debug_printf("svga: Destination blit format conversion failed.\n");
 761          ret = false;
 762          goto done;
 763       }
 764    }
 765
 766 done:
 767    /* unreference the temporary resources if needed */
 768    pipe_resource_reference(&newDst, NULL);
 769    pipe_resource_reference(&newSrc, NULL);
 770
 771    SVGA_STATS_TIME_POP(sws);  /* SVGA_STATS_TIME_BLITBLITTER */
 772    (void) sws;
 773
 774    return ret;
 775 }
 776
 777
 778 /**
 779  * Try a cpu copy_region fallback.
 780  */
 781 static bool
 782 try_cpu_copy_region(struct svga_context *svga,
 783                     const struct pipe_blit_info *blit)
 784 {
 785    if (util_can_blit_via_copy_region(blit, TRUE) ||
 786        util_can_blit_via_copy_region(blit, FALSE)) {
 787
 788       if (svga->render_condition && blit->render_condition_enable) {
 789          debug_warning("CPU copy_region doesn't support "
 790                        "conditional rendering.\n");
 791          return false;
 792       }
 793
 794       copy_region_fallback(svga, blit->dst.resource,
 795                            blit->dst.level,
 796                            blit->dst.box.x, blit->dst.box.y,
 797                            blit->dst.box.z, blit->src.resource,
 798                            blit->src.level, &blit->src.box);
 799       return true;
 800    }
 801
 802    return false;
 803 }
 804
 805
 806 /**
 807  * The pipe::blit member.
 808  */
 809 static void
 810 svga_blit(struct pipe_context *pipe,
 811           const struct pipe_blit_info *blit)
 812 {
 813    struct svga_context *svga = svga_context(pipe);
 814    struct svga_winsys_screen *sws = svga_screen(pipe->screen)->sws;
 815
 816    if (!svga_have_vgpu10(svga) &&
 817        blit->src.resource->nr_samples > 1 &&
 818        blit->dst.resource->nr_samples <= 1 &&
 819        !util_format_is_depth_or_stencil(blit->src.resource->format) &&
 820        !util_format_is_pure_integer(blit->src.resource->format)) {
 821       debug_printf("svga: color resolve unimplemented\n");
 822       return;
 823    }
 824
 825    SVGA_STATS_TIME_PUSH(sws, SVGA_STATS_TIME_BLIT);
 826
 827    if (try_copy_region(svga, blit))
 828       goto done;
 829
 830    if (try_blit(svga, blit))
 831       goto done;
 832
 833    if (!try_cpu_copy_region(svga, blit))
 834       debug_printf("svga: Blit failed.\n");
 835
 836 done:
 837    SVGA_STATS_TIME_POP(sws);  /* SVGA_STATS_TIME_BLIT */
 838    (void) sws;
 839 }
 840
 841
 842 /**
 843  * The pipe::resource_copy_region member.
 844  */
 845 static void
 846 svga_resource_copy_region(struct pipe_context *pipe,
 847                           struct pipe_resource *dst_tex,
 848                           unsigned dst_level,
 849                           unsigned dstx, unsigned dsty, unsigned dstz,
 850                           struct pipe_resource *src_tex,
 851                           unsigned src_level,
 852                           const struct pipe_box *src_box)
 853 {
 854    struct svga_context *svga = svga_context(pipe);
 855    struct svga_winsys_screen *sws = svga_screen(svga->pipe.screen)->sws;
 856
 857    SVGA_STATS_TIME_PUSH(sws, SVGA_STATS_TIME_COPYREGION);
 858
 859    if (dst_tex->target == PIPE_BUFFER && src_tex->target == PIPE_BUFFER) {
 860       /* can't copy within the same buffer, unfortunately */
 861       if (svga_have_vgpu10(svga) && src_tex != dst_tex) {
 862          enum pipe_error ret;
 863          struct svga_winsys_surface *src_surf;
 864          struct svga_winsys_surface *dst_surf;
 865          struct svga_buffer *dbuffer = svga_buffer(dst_tex);
 866          struct svga_buffer *sbuffer = svga_buffer(src_tex);
 867
 868          src_surf = svga_buffer_handle(svga, src_tex, sbuffer->bind_flags);
 869          dst_surf = svga_buffer_handle(svga, dst_tex, dbuffer->bind_flags);
 870
 871          ret = SVGA3D_vgpu10_BufferCopy(svga->swc, src_surf, dst_surf,
 872                                         src_box->x, dstx, src_box->width);
 873          if (ret != PIPE_OK) {
 874             svga_context_flush(svga, NULL);
 875             ret = SVGA3D_vgpu10_BufferCopy(svga->swc, src_surf, dst_surf,
 876                                            src_box->x, dstx, src_box->width);
 877             assert(ret == PIPE_OK);
 878          }
 879
 880          dbuffer->dirty = TRUE;
 881       }
 882       else {
 883          /* use map/memcpy fallback */
 884          copy_region_fallback(svga, dst_tex, dst_level, dstx,
 885                               dsty, dstz, src_tex, src_level, src_box);
 886       }
 887    } else {
 888       struct pipe_blit_info blit;
 889
 890       build_blit_info(dst_tex, dst_level, dstx, dsty, dstz,
 891                       src_tex, src_level, src_box, &blit);
 892
 893       if (try_copy_region(svga, &blit))
 894          goto done;
 895
 896       /* Blits are format-converting which is not what we want, so perform a
 897        * strict format-check.
 898        * FIXME: Need to figure out why srgb blits (tf2) and
 899        * 3D blits (piglit) are broken here. Perhaps we set up the
 900        * struct pipe_blit_info incorrectly.
 901        */
 902       if (src_tex->format == dst_tex->format &&
 903           !util_format_is_srgb(src_tex->format) &&
 904           svga_resource_type(src_tex->target) != SVGA3D_RESOURCE_TEXTURE3D &&
 905           try_blit(svga, &blit))
 906          goto done;
 907
 908       copy_region_fallback(svga, dst_tex, dst_level, dstx, dsty, dstz,
 909                            src_tex, src_level, src_box);
 910    }
 911
 912 done:
 913    SVGA_STATS_TIME_POP(sws);
 914    (void) sws;
 915 }
 916
 917
 918 /**
 919  * The pipe::flush_resource member.
 920  */
 921 static void
 922 svga_flush_resource(struct pipe_context *pipe,
 923                     struct pipe_resource *resource)
 924 {
 925 }
 926
 927
 928 /**
 929  * Setup the pipe blit, resource_copy_region and flush_resource members.
 930  */
 931 void
 932 svga_init_blit_functions(struct svga_context *svga)
 933 {
 934    svga->pipe.resource_copy_region = svga_resource_copy_region;
 935    svga->pipe.blit = svga_blit;
 936    svga->pipe.flush_resource = svga_flush_resource;
 937 }