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