src/gallium/drivers/r600/r600_blit.c

   1 /*
   2  * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23 #include "r600_pipe.h"
  24 #include "util/u_surface.h"
  25 #include "util/u_blitter.h"
  26 #include "util/u_format.h"
  27
  28 enum r600_blitter_op /* bitmask */
  29 {
  30         R600_SAVE_FRAGMENT_STATE = 1,
  31         R600_SAVE_TEXTURES       = 2,
  32         R600_SAVE_FRAMEBUFFER    = 4,
  33         R600_DISABLE_RENDER_COND = 8,
  34
  35         R600_CLEAR         = R600_SAVE_FRAGMENT_STATE,
  36
  37         R600_CLEAR_SURFACE = R600_SAVE_FRAGMENT_STATE | R600_SAVE_FRAMEBUFFER,
  38
  39         R600_COPY_BUFFER   = R600_DISABLE_RENDER_COND,
  40
  41         R600_COPY_TEXTURE  = R600_SAVE_FRAGMENT_STATE | R600_SAVE_FRAMEBUFFER | R600_SAVE_TEXTURES |
  42                              R600_DISABLE_RENDER_COND,
  43
  44         R600_BLIT          = R600_SAVE_FRAGMENT_STATE | R600_SAVE_FRAMEBUFFER | R600_SAVE_TEXTURES |
  45                              R600_DISABLE_RENDER_COND,
  46
  47         R600_DECOMPRESS    = R600_SAVE_FRAGMENT_STATE | R600_SAVE_FRAMEBUFFER | R600_DISABLE_RENDER_COND,
  48
  49         R600_COLOR_RESOLVE = R600_SAVE_FRAGMENT_STATE | R600_SAVE_FRAMEBUFFER | R600_DISABLE_RENDER_COND
  50 };
  51
  52 static void r600_blitter_begin(struct pipe_context *ctx, enum r600_blitter_op op)
  53 {
  54         struct r600_context *rctx = (struct r600_context *)ctx;
  55
  56         r600_suspend_nontimer_queries(rctx);
  57
  58         util_blitter_save_vertex_buffers(rctx->blitter,
  59                                          util_last_bit(rctx->vertex_buffer_state.enabled_mask),
  60                                          rctx->vertex_buffer_state.vb);
  61         util_blitter_save_vertex_elements(rctx->blitter, rctx->vertex_fetch_shader.cso);
  62         util_blitter_save_vertex_shader(rctx->blitter, rctx->vs_shader);
  63         util_blitter_save_so_targets(rctx->blitter, rctx->num_so_targets,
  64                                      (struct pipe_stream_output_target**)rctx->so_targets);
  65         util_blitter_save_rasterizer(rctx->blitter, rctx->rasterizer_state.cso);
  66
  67         if (op & R600_SAVE_FRAGMENT_STATE) {
  68                 util_blitter_save_viewport(rctx->blitter, &rctx->viewport.state);
  69                 util_blitter_save_scissor(rctx->blitter, &rctx->scissor.scissor);
  70                 util_blitter_save_fragment_shader(rctx->blitter, rctx->ps_shader);
  71                 util_blitter_save_blend(rctx->blitter, rctx->blend_state.cso);
  72                 util_blitter_save_depth_stencil_alpha(rctx->blitter, rctx->dsa_state.cso);
  73                 util_blitter_save_stencil_ref(rctx->blitter, &rctx->stencil_ref.pipe_state);
  74                 util_blitter_save_sample_mask(rctx->blitter, rctx->sample_mask.sample_mask);
  75         }
  76
  77         if (op & R600_SAVE_FRAMEBUFFER)
  78                 util_blitter_save_framebuffer(rctx->blitter, &rctx->framebuffer.state);
  79
  80         if (op & R600_SAVE_TEXTURES) {
  81                 util_blitter_save_fragment_sampler_states(
  82                         rctx->blitter, util_last_bit(rctx->samplers[PIPE_SHADER_FRAGMENT].states.enabled_mask),
  83                         (void**)rctx->samplers[PIPE_SHADER_FRAGMENT].states.states);
  84
  85                 util_blitter_save_fragment_sampler_views(
  86                         rctx->blitter, util_last_bit(rctx->samplers[PIPE_SHADER_FRAGMENT].views.enabled_mask),
  87                         (struct pipe_sampler_view**)rctx->samplers[PIPE_SHADER_FRAGMENT].views.views);
  88         }
  89
  90         if ((op & R600_DISABLE_RENDER_COND) && rctx->current_render_cond) {
  91            util_blitter_save_render_condition(rctx->blitter,
  92                                               rctx->current_render_cond,
  93                                               rctx->current_render_cond_mode);
  94         }
  95 }
  96
  97 static void r600_blitter_end(struct pipe_context *ctx)
  98 {
  99         struct r600_context *rctx = (struct r600_context *)ctx;
 100         r600_resume_nontimer_queries(rctx);
 101 }
 102
 103 static unsigned u_max_layer(struct pipe_resource *r, unsigned level)
 104 {
 105         switch (r->target) {
 106         case PIPE_TEXTURE_CUBE:
 107                 return 6 - 1;
 108         case PIPE_TEXTURE_3D:
 109                 return u_minify(r->depth0, level) - 1;
 110         case PIPE_TEXTURE_1D_ARRAY:
 111         case PIPE_TEXTURE_2D_ARRAY:
 112                 return r->array_size - 1;
 113         default:
 114                 return 0;
 115         }
 116 }
 117
 118 static unsigned u_max_sample(struct pipe_resource *r)
 119 {
 120         return r->nr_samples ? r->nr_samples - 1 : 0;
 121 }
 122
 123 void r600_blit_decompress_depth(struct pipe_context *ctx,
 124                 struct r600_texture *texture,
 125                 struct r600_texture *staging,
 126                 unsigned first_level, unsigned last_level,
 127                 unsigned first_layer, unsigned last_layer,
 128                 unsigned first_sample, unsigned last_sample)
 129 {
 130         struct r600_context *rctx = (struct r600_context *)ctx;
 131         unsigned layer, level, sample, checked_last_layer, max_layer, max_sample;
 132         struct r600_texture *flushed_depth_texture = staging ?
 133                         staging : texture->flushed_depth_texture;
 134         const struct util_format_description *desc =
 135                 util_format_description(texture->resource.b.b.format);
 136         float depth;
 137
 138         if (!staging && !texture->dirty_level_mask)
 139                 return;
 140
 141         max_sample = u_max_sample(&texture->resource.b.b);
 142
 143         /* XXX Decompressing MSAA depth textures is broken on R6xx.
 144          * There is also a hardlock if CMASK and FMASK are not present.
 145          * Just skip this until we find out how to fix it. */
 146         if (rctx->chip_class == R600 && max_sample > 0) {
 147                 texture->dirty_level_mask = 0;
 148                 return;
 149         }
 150
 151         if (rctx->family == CHIP_RV610 || rctx->family == CHIP_RV630 ||
 152             rctx->family == CHIP_RV620 || rctx->family == CHIP_RV635)
 153                 depth = 0.0f;
 154         else
 155                 depth = 1.0f;
 156
 157         /* Enable decompression in DB_RENDER_CONTROL */
 158         rctx->db_misc_state.flush_depthstencil_through_cb = true;
 159         rctx->db_misc_state.copy_depth = util_format_has_depth(desc);
 160         rctx->db_misc_state.copy_stencil = util_format_has_stencil(desc);
 161         rctx->db_misc_state.copy_sample = first_sample;
 162         rctx->db_misc_state.atom.dirty = true;
 163
 164
 165         for (level = first_level; level <= last_level; level++) {
 166                 if (!staging && !(texture->dirty_level_mask & (1 << level)))
 167                         continue;
 168
 169                 /* The smaller the mipmap level, the less layers there are
 170                  * as far as 3D textures are concerned. */
 171                 max_layer = u_max_layer(&texture->resource.b.b, level);
 172                 checked_last_layer = last_layer < max_layer ? last_layer : max_layer;
 173
 174                 for (layer = first_layer; layer <= checked_last_layer; layer++) {
 175                         for (sample = first_sample; sample <= last_sample; sample++) {
 176                                 struct pipe_surface *zsurf, *cbsurf, surf_tmpl;
 177
 178                                 if (sample != rctx->db_misc_state.copy_sample) {
 179                                         rctx->db_misc_state.copy_sample = sample;
 180                                         rctx->db_misc_state.atom.dirty = true;
 181                                 }
 182
 183                                 surf_tmpl.format = texture->resource.b.b.format;
 184                                 surf_tmpl.u.tex.level = level;
 185                                 surf_tmpl.u.tex.first_layer = layer;
 186                                 surf_tmpl.u.tex.last_layer = layer;
 187                                 surf_tmpl.usage = PIPE_BIND_DEPTH_STENCIL;
 188
 189                                 zsurf = ctx->create_surface(ctx, &texture->resource.b.b, &surf_tmpl);
 190
 191                                 surf_tmpl.format = flushed_depth_texture->resource.b.b.format;
 192                                 surf_tmpl.u.tex.level = level;
 193                                 surf_tmpl.u.tex.first_layer = layer;
 194                                 surf_tmpl.u.tex.last_layer = layer;
 195                                 surf_tmpl.usage = PIPE_BIND_RENDER_TARGET;
 196                                 cbsurf = ctx->create_surface(ctx,
 197                                                 &flushed_depth_texture->resource.b.b, &surf_tmpl);
 198
 199                                 r600_blitter_begin(ctx, R600_DECOMPRESS);
 200                                 util_blitter_custom_depth_stencil(rctx->blitter, zsurf, cbsurf, 1 << sample,
 201                                                                   rctx->custom_dsa_flush, depth);
 202                                 r600_blitter_end(ctx);
 203
 204                                 pipe_surface_reference(&zsurf, NULL);
 205                                 pipe_surface_reference(&cbsurf, NULL);
 206                         }
 207                 }
 208
 209                 /* The texture will always be dirty if some layers or samples aren't flushed.
 210                  * I don't think this case occurs often though. */
 211                 if (!staging &&
 212                     first_layer == 0 && last_layer == max_layer &&
 213                     first_sample == 0 && last_sample == max_sample) {
 214                         texture->dirty_level_mask &= ~(1 << level);
 215                 }
 216         }
 217
 218         /* reenable compression in DB_RENDER_CONTROL */
 219         rctx->db_misc_state.flush_depthstencil_through_cb = false;
 220         rctx->db_misc_state.atom.dirty = true;
 221 }
 222
 223 void r600_decompress_depth_textures(struct r600_context *rctx,
 224                                struct r600_samplerview_state *textures)
 225 {
 226         unsigned i;
 227         unsigned depth_texture_mask = textures->compressed_depthtex_mask;
 228
 229         while (depth_texture_mask) {
 230                 struct pipe_sampler_view *view;
 231                 struct r600_texture *tex;
 232
 233                 i = u_bit_scan(&depth_texture_mask);
 234
 235                 view = &textures->views[i]->base;
 236                 assert(view);
 237
 238                 tex = (struct r600_texture *)view->texture;
 239                 assert(tex->is_depth && !tex->is_flushing_texture);
 240
 241                 r600_blit_decompress_depth(&rctx->context, tex, NULL,
 242                                            view->u.tex.first_level, view->u.tex.last_level,
 243                                            0, u_max_layer(&tex->resource.b.b, view->u.tex.first_level),
 244                                            0, u_max_sample(&tex->resource.b.b));
 245         }
 246 }
 247
 248 static void r600_blit_decompress_color(struct pipe_context *ctx,
 249                 struct r600_texture *rtex,
 250                 unsigned first_level, unsigned last_level,
 251                 unsigned first_layer, unsigned last_layer)
 252 {
 253         struct r600_context *rctx = (struct r600_context *)ctx;
 254         unsigned layer, level, checked_last_layer, max_layer;
 255
 256         assert(rctx->chip_class != CAYMAN);
 257
 258         if (!rtex->dirty_level_mask)
 259                 return;
 260
 261         for (level = first_level; level <= last_level; level++) {
 262                 if (!(rtex->dirty_level_mask & (1 << level)))
 263                         continue;
 264
 265                 /* The smaller the mipmap level, the less layers there are
 266                  * as far as 3D textures are concerned. */
 267                 max_layer = u_max_layer(&rtex->resource.b.b, level);
 268                 checked_last_layer = last_layer < max_layer ? last_layer : max_layer;
 269
 270                 for (layer = first_layer; layer <= checked_last_layer; layer++) {
 271                         struct pipe_surface *cbsurf, surf_tmpl;
 272
 273                         surf_tmpl.format = rtex->resource.b.b.format;
 274                         surf_tmpl.u.tex.level = level;
 275                         surf_tmpl.u.tex.first_layer = layer;
 276                         surf_tmpl.u.tex.last_layer = layer;
 277                         surf_tmpl.usage = PIPE_BIND_RENDER_TARGET;
 278                         cbsurf = ctx->create_surface(ctx, &rtex->resource.b.b, &surf_tmpl);
 279
 280                         r600_blitter_begin(ctx, R600_DECOMPRESS);
 281                         util_blitter_custom_color(rctx->blitter, cbsurf,
 282                                                   rctx->custom_blend_decompress);
 283                         r600_blitter_end(ctx);
 284
 285                         pipe_surface_reference(&cbsurf, NULL);
 286                 }
 287
 288                 /* The texture will always be dirty if some layers or samples aren't flushed.
 289                  * I don't think this case occurs often though. */
 290                 if (first_layer == 0 && last_layer == max_layer) {
 291                         rtex->dirty_level_mask &= ~(1 << level);
 292                 }
 293         }
 294 }
 295
 296 void r600_decompress_color_textures(struct r600_context *rctx,
 297                                     struct r600_samplerview_state *textures)
 298 {
 299         unsigned i;
 300         unsigned mask = textures->compressed_colortex_mask;
 301
 302         /* Cayman cannot decompress an MSAA colorbuffer,
 303          * but it can read it compressed, so skip this. */
 304         assert(rctx->chip_class != CAYMAN);
 305         if (rctx->chip_class == CAYMAN) {
 306                 return;
 307         }
 308
 309         while (mask) {
 310                 struct pipe_sampler_view *view;
 311                 struct r600_texture *tex;
 312
 313                 i = u_bit_scan(&mask);
 314
 315                 view = &textures->views[i]->base;
 316                 assert(view);
 317
 318                 tex = (struct r600_texture *)view->texture;
 319                 assert(tex->cmask_size && tex->fmask_size);
 320
 321                 r600_blit_decompress_color(&rctx->context, tex,
 322                                            view->u.tex.first_level, view->u.tex.last_level,
 323                                            0, u_max_layer(&tex->resource.b.b, view->u.tex.first_level));
 324         }
 325 }
 326
 327 /* Helper for decompressing a portion of a color or depth resource before
 328  * blitting if any decompression is needed.
 329  * The driver doesn't decompress resources automatically while u_blitter is
 330  * rendering. */
 331 static bool r600_decompress_subresource(struct pipe_context *ctx,
 332                                         struct pipe_resource *tex,
 333                                         unsigned level,
 334                                         unsigned first_layer, unsigned last_layer)
 335 {
 336         struct r600_context *rctx = (struct r600_context *)ctx;
 337         struct r600_texture *rtex = (struct r600_texture*)tex;
 338
 339         if (rtex->is_depth && !rtex->is_flushing_texture) {
 340                 if (!r600_init_flushed_depth_texture(ctx, tex, NULL))
 341                         return false; /* error */
 342
 343                 r600_blit_decompress_depth(ctx, rtex, NULL,
 344                                            level, level,
 345                                            first_layer, last_layer,
 346                                            0, u_max_sample(tex));
 347         } else if (rctx->chip_class != CAYMAN && rtex->fmask_size && rtex->cmask_size) {
 348                 r600_blit_decompress_color(ctx, rtex, level, level,
 349                                            first_layer, last_layer);
 350         }
 351         return true;
 352 }
 353
 354 static boolean is_simple_msaa_resolve(const struct pipe_blit_info *info)
 355 {
 356         unsigned dst_width = u_minify(info->dst.resource->width0, info->dst.level);
 357         unsigned dst_height = u_minify(info->dst.resource->height0, info->dst.level);
 358
 359         return info->dst.resource->format == info->src.resource->format &&
 360                 info->dst.resource->format == info->dst.format &&
 361                 info->src.resource->format == info->src.format &&
 362                 !info->scissor_enable &&
 363                 info->mask == PIPE_MASK_RGBA &&
 364                 dst_width == info->src.resource->width0 &&
 365                 dst_height == info->src.resource->height0 &&
 366                 info->dst.box.x == 0 &&
 367                 info->dst.box.y == 0 &&
 368                 info->dst.box.width == dst_width &&
 369                 info->dst.box.height == dst_height &&
 370                 info->src.box.x == 0 &&
 371                 info->src.box.y == 0 &&
 372                 info->src.box.width == dst_width &&
 373                 info->src.box.height == dst_height;
 374 }
 375
 376 static void r600_clear(struct pipe_context *ctx, unsigned buffers,
 377                        const union pipe_color_union *color,
 378                        double depth, unsigned stencil)
 379 {
 380         struct r600_context *rctx = (struct r600_context *)ctx;
 381         struct pipe_framebuffer_state *fb = &rctx->framebuffer.state;
 382
 383         r600_blitter_begin(ctx, R600_CLEAR);
 384         util_blitter_clear(rctx->blitter, fb->width, fb->height,
 385                            fb->nr_cbufs, buffers, fb->nr_cbufs ? fb->cbufs[0]->format : PIPE_FORMAT_NONE,
 386                            color, depth, stencil);
 387         r600_blitter_end(ctx);
 388 }
 389
 390 static void r600_clear_render_target(struct pipe_context *ctx,
 391                                      struct pipe_surface *dst,
 392                                      const union pipe_color_union *color,
 393                                      unsigned dstx, unsigned dsty,
 394                                      unsigned width, unsigned height)
 395 {
 396         struct r600_context *rctx = (struct r600_context *)ctx;
 397
 398         r600_blitter_begin(ctx, R600_CLEAR_SURFACE);
 399         util_blitter_clear_render_target(rctx->blitter, dst, color,
 400                                          dstx, dsty, width, height);
 401         r600_blitter_end(ctx);
 402 }
 403
 404 static void r600_clear_depth_stencil(struct pipe_context *ctx,
 405                                      struct pipe_surface *dst,
 406                                      unsigned clear_flags,
 407                                      double depth,
 408                                      unsigned stencil,
 409                                      unsigned dstx, unsigned dsty,
 410                                      unsigned width, unsigned height)
 411 {
 412         struct r600_context *rctx = (struct r600_context *)ctx;
 413
 414         r600_blitter_begin(ctx, R600_CLEAR_SURFACE);
 415         util_blitter_clear_depth_stencil(rctx->blitter, dst, clear_flags, depth, stencil,
 416                                          dstx, dsty, width, height);
 417         r600_blitter_end(ctx);
 418 }
 419
 420 void r600_copy_buffer(struct pipe_context *ctx, struct
 421                       pipe_resource *dst, unsigned dstx,
 422                       struct pipe_resource *src, const struct pipe_box *src_box)
 423 {
 424         struct r600_context *rctx = (struct r600_context*)ctx;
 425
 426         if (rctx->screen->has_streamout &&
 427             /* Require dword alignment. */
 428             dstx % 4 == 0 && src_box->x % 4 == 0 && src_box->width % 4 == 0) {
 429                 r600_blitter_begin(ctx, R600_COPY_BUFFER);
 430                 util_blitter_copy_buffer(rctx->blitter, dst, dstx, src, src_box->x, src_box->width);
 431                 r600_blitter_end(ctx);
 432         } else {
 433                 util_resource_copy_region(ctx, dst, 0, dstx, 0, 0, src, 0, src_box);
 434         }
 435 }
 436
 437 static bool util_format_is_subsampled_2x1_32bpp(enum pipe_format format)
 438 {
 439         const struct util_format_description *desc = util_format_description(format);
 440
 441         return desc->layout == UTIL_FORMAT_LAYOUT_SUBSAMPLED &&
 442                desc->block.width == 2 &&
 443                desc->block.height == 1 &&
 444                desc->block.bits == 32;
 445 }
 446
 447 static void r600_resource_copy_region(struct pipe_context *ctx,
 448                                       struct pipe_resource *dst,
 449                                       unsigned dst_level,
 450                                       unsigned dstx, unsigned dsty, unsigned dstz,
 451                                       struct pipe_resource *src,
 452                                       unsigned src_level,
 453                                       const struct pipe_box *src_box)
 454 {
 455         struct r600_context *rctx = (struct r600_context *)ctx;
 456         struct r600_texture *rsrc = (struct r600_texture*)src;
 457         struct r600_texture *rdst = (struct r600_texture*)dst;
 458         struct pipe_surface *dst_view, dst_templ;
 459         struct pipe_sampler_view src_templ, *src_view;
 460         unsigned dst_width, dst_height, src_width0, src_height0, src_widthFL, src_heightFL;
 461         struct pipe_box sbox;
 462
 463         /* Handle buffers first. */
 464         if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
 465                 r600_copy_buffer(ctx, dst, dstx, src, src_box);
 466                 return;
 467         }
 468
 469         assert(u_max_sample(dst) == u_max_sample(src));
 470
 471         /* The driver doesn't decompress resources automatically while
 472          * u_blitter is rendering. */
 473         if (!r600_decompress_subresource(ctx, src, src_level,
 474                                          src_box->z, src_box->z + src_box->depth - 1)) {
 475                 return; /* error */
 476         }
 477
 478         dst_width = rdst->surface.level[dst_level].npix_x;
 479         dst_height = rdst->surface.level[dst_level].npix_y;
 480         src_width0 = src->width0;
 481         src_height0 = src->height0;
 482         src_widthFL = rsrc->surface.level[src_level].npix_x;
 483         src_heightFL = rsrc->surface.level[src_level].npix_y;
 484
 485         util_blitter_default_dst_texture(&dst_templ, dst, dst_level, dstz, src_box);
 486         util_blitter_default_src_texture(&src_templ, src, src_level);
 487
 488         if (util_format_is_compressed(src->format)) {
 489                 unsigned blocksize = util_format_get_blocksize(src->format);
 490
 491                 if (blocksize == 8)
 492                         src_templ.format = PIPE_FORMAT_R16G16B16A16_UINT; /* 64-bit block */
 493                 else
 494                         src_templ.format = PIPE_FORMAT_R32G32B32A32_UINT; /* 128-bit block */
 495                 dst_templ.format = src_templ.format;
 496
 497                 dst_width = util_format_get_nblocksx(dst->format, rdst->surface.level[dst_level].npix_x);
 498                 dst_height = util_format_get_nblocksy(dst->format, rdst->surface.level[dst_level].npix_y);
 499                 src_width0 = util_format_get_nblocksx(src->format, src->width0);
 500                 src_height0 = util_format_get_nblocksy(src->format, src->height0);
 501                 src_widthFL = util_format_get_nblocksx(src->format, rsrc->surface.level[src_level].npix_x);
 502                 src_heightFL = util_format_get_nblocksy(src->format, rsrc->surface.level[src_level].npix_y);
 503
 504                 dstx = util_format_get_nblocksx(dst->format, dstx);
 505                 dsty = util_format_get_nblocksy(dst->format, dsty);
 506
 507                 sbox.x = util_format_get_nblocksx(src->format, src_box->x);
 508                 sbox.y = util_format_get_nblocksy(src->format, src_box->y);
 509                 sbox.z = src_box->z;
 510                 sbox.width = util_format_get_nblocksx(src->format, src_box->width);
 511                 sbox.height = util_format_get_nblocksy(src->format, src_box->height);
 512                 sbox.depth = src_box->depth;
 513                 src_box = &sbox;
 514         } else if (!util_blitter_is_copy_supported(rctx->blitter, dst, src,
 515                                                    PIPE_MASK_RGBAZS)) {
 516                 if (util_format_is_subsampled_2x1_32bpp(src->format)) {
 517
 518                         src_templ.format = PIPE_FORMAT_R8G8B8A8_UINT;
 519                         dst_templ.format = PIPE_FORMAT_R8G8B8A8_UINT;
 520
 521                         dst_width = util_format_get_nblocksx(dst->format, rdst->surface.level[dst_level].npix_x);
 522                         src_width0 = util_format_get_nblocksx(src->format, src->width0);
 523                         src_widthFL = util_format_get_nblocksx(src->format, rsrc->surface.level[src_level].npix_x);
 524
 525                         dstx = util_format_get_nblocksx(dst->format, dstx);
 526
 527                         sbox = *src_box;
 528                         sbox.x = util_format_get_nblocksx(src->format, src_box->x);
 529                         sbox.width = util_format_get_nblocksx(src->format, src_box->width);
 530                         src_box = &sbox;
 531                 } else {
 532                         unsigned blocksize = util_format_get_blocksize(src->format);
 533
 534                         switch (blocksize) {
 535                         case 1:
 536                                 dst_templ.format = PIPE_FORMAT_R8_UNORM;
 537                                 src_templ.format = PIPE_FORMAT_R8_UNORM;
 538                                 break;
 539                         case 4:
 540                                 dst_templ.format = PIPE_FORMAT_R8G8B8A8_UNORM;
 541                                 src_templ.format = PIPE_FORMAT_R8G8B8A8_UNORM;
 542                                 break;
 543                         default:
 544                                 fprintf(stderr, "Unhandled format %s with blocksize %u\n",
 545                                         util_format_short_name(src->format), blocksize);
 546                                 assert(0);
 547                         }
 548                 }
 549         }
 550
 551         dst_view = r600_create_surface_custom(ctx, dst, &dst_templ, dst_width, dst_height);
 552
 553         if (rctx->chip_class >= EVERGREEN) {
 554                 src_view = evergreen_create_sampler_view_custom(ctx, src, &src_templ,
 555                                                                 src_width0, src_height0);
 556         } else {
 557                 src_view = r600_create_sampler_view_custom(ctx, src, &src_templ,
 558                                                            src_widthFL, src_heightFL);
 559         }
 560
 561         /* Copy. */
 562         /* XXX Multisample texturing is unimplemented on Cayman. In the meantime,
 563          * copy only the first sample (which is the only one that is uncompressed
 564          * and therefore doesn't return garbage). */
 565         r600_blitter_begin(ctx, R600_COPY_TEXTURE);
 566         util_blitter_blit_generic(rctx->blitter, dst_view, dstx, dsty,
 567                                   abs(src_box->width), abs(src_box->height),
 568                                   src_view, src_box, src_width0, src_height0,
 569                                   PIPE_MASK_RGBAZS, PIPE_TEX_FILTER_NEAREST, NULL,
 570                                   rctx->chip_class != CAYMAN);
 571         r600_blitter_end(ctx);
 572
 573         pipe_surface_reference(&dst_view, NULL);
 574         pipe_sampler_view_reference(&src_view, NULL);
 575 }
 576
 577 /* For MSAA integer resolving to work, we change the format to NORM using this function. */
 578 static enum pipe_format int_to_norm_format(enum pipe_format format)
 579 {
 580         switch (format) {
 581 #define REPLACE_FORMAT_SIGN(format,sign) \
 582         case PIPE_FORMAT_##format##_##sign##INT: \
 583                 return PIPE_FORMAT_##format##_##sign##NORM
 584 #define REPLACE_FORMAT(format) \
 585                 REPLACE_FORMAT_SIGN(format, U); \
 586                 REPLACE_FORMAT_SIGN(format, S)
 587
 588         REPLACE_FORMAT_SIGN(B10G10R10A2, U);
 589         REPLACE_FORMAT(R8);
 590         REPLACE_FORMAT(R8G8);
 591         REPLACE_FORMAT(R8G8B8);
 592         REPLACE_FORMAT(R8G8B8A8);
 593         REPLACE_FORMAT(A8);
 594         REPLACE_FORMAT(I8);
 595         REPLACE_FORMAT(L8);
 596         REPLACE_FORMAT(L8A8);
 597         REPLACE_FORMAT(R16);
 598         REPLACE_FORMAT(R16G16);
 599         REPLACE_FORMAT(R16G16B16);
 600         REPLACE_FORMAT(R16G16B16A16);
 601         REPLACE_FORMAT(A16);
 602         REPLACE_FORMAT(I16);
 603         REPLACE_FORMAT(L16);
 604         REPLACE_FORMAT(L16A16);
 605
 606 #undef REPLACE_FORMAT
 607 #undef REPLACE_FORMAT_SIGN
 608         default:
 609                 return format;
 610         }
 611 }
 612
 613 static void r600_msaa_color_resolve(struct pipe_context *ctx,
 614                               const struct pipe_blit_info *info)
 615 {
 616         struct r600_context *rctx = (struct r600_context *)ctx;
 617         struct pipe_screen *screen = ctx->screen;
 618         struct pipe_resource *tmp, templ;
 619         struct pipe_blit_info blit;
 620         unsigned sample_mask =
 621                 rctx->chip_class == CAYMAN ? ~0 :
 622                 ((1ull << MAX2(1, info->src.resource->nr_samples)) - 1);
 623
 624         assert(info->src.level == 0);
 625         assert(info->src.box.depth == 1);
 626         assert(info->dst.box.depth == 1);
 627
 628         if (is_simple_msaa_resolve(info)) {
 629                 r600_blitter_begin(ctx, R600_COLOR_RESOLVE);
 630                 util_blitter_custom_resolve_color(rctx->blitter,
 631                                                   info->dst.resource, info->dst.level,
 632                                                   info->dst.box.z,
 633                                                   info->src.resource, info->src.box.z,
 634                                                   sample_mask, rctx->custom_blend_resolve,
 635                                                   int_to_norm_format(info->dst.format));
 636                 r600_blitter_end(ctx);
 637                 return;
 638         }
 639
 640         /* resolve into a temporary texture, then blit */
 641         templ.target = PIPE_TEXTURE_2D;
 642         templ.format = info->src.resource->format;
 643         templ.width0 = info->src.resource->width0;
 644         templ.height0 = info->src.resource->height0;
 645         templ.depth0 = 1;
 646         templ.array_size = 1;
 647         templ.last_level = 0;
 648         templ.nr_samples = 0;
 649         templ.usage = PIPE_USAGE_STATIC;
 650         templ.bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 651         templ.flags = 0;
 652
 653         tmp = screen->resource_create(screen, &templ);
 654
 655         /* resolve */
 656         r600_blitter_begin(ctx, R600_COLOR_RESOLVE);
 657         util_blitter_custom_resolve_color(rctx->blitter,
 658                                           tmp, 0, 0,
 659                                           info->src.resource, info->src.box.z,
 660                                           sample_mask, rctx->custom_blend_resolve,
 661                                           int_to_norm_format(tmp->format));
 662         r600_blitter_end(ctx);
 663
 664         /* blit */
 665         blit = *info;
 666         blit.src.resource = tmp;
 667         blit.src.box.z = 0;
 668
 669         r600_blitter_begin(ctx, R600_BLIT);
 670         util_blitter_blit(rctx->blitter, &blit);
 671         r600_blitter_end(ctx);
 672
 673         pipe_resource_reference(&tmp, NULL);
 674 }
 675
 676 static void r600_blit(struct pipe_context *ctx,
 677                       const struct pipe_blit_info *info)
 678 {
 679         struct r600_context *rctx = (struct r600_context*)ctx;
 680
 681         assert(util_blitter_is_blit_supported(rctx->blitter, info));
 682
 683         if (info->src.resource->nr_samples > 1 &&
 684             info->dst.resource->nr_samples <= 1 &&
 685             !util_format_is_depth_or_stencil(info->src.resource->format) &&
 686             !util_format_is_pure_integer(int_to_norm_format(info->src.resource->format))) {
 687                 r600_msaa_color_resolve(ctx, info);
 688                 return;
 689         }
 690
 691         /* The driver doesn't decompress resources automatically while
 692          * u_blitter is rendering. */
 693         if (!r600_decompress_subresource(ctx, info->src.resource, info->src.level,
 694                                          info->src.box.z,
 695                                          info->src.box.z + info->src.box.depth - 1)) {
 696                 return; /* error */
 697         }
 698
 699         r600_blitter_begin(ctx, R600_BLIT);
 700         util_blitter_blit(rctx->blitter, info);
 701         r600_blitter_end(ctx);
 702 }
 703
 704 void r600_init_blit_functions(struct r600_context *rctx)
 705 {
 706         rctx->context.clear = r600_clear;
 707         rctx->context.clear_render_target = r600_clear_render_target;
 708         rctx->context.clear_depth_stencil = r600_clear_depth_stencil;
 709         rctx->context.resource_copy_region = r600_resource_copy_region;
 710         rctx->context.blit = r600_blit;
 711 }