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_DECOMPRESS    = R600_SAVE_FRAGMENT_STATE | R600_SAVE_FRAMEBUFFER | R600_DISABLE_RENDER_COND,
  45
  46         R600_COLOR_RESOLVE = R600_SAVE_FRAGMENT_STATE | R600_SAVE_FRAMEBUFFER | R600_DISABLE_RENDER_COND
  47 };
  48
  49 static void r600_blitter_begin(struct pipe_context *ctx, enum r600_blitter_op op)
  50 {
  51         struct r600_context *rctx = (struct r600_context *)ctx;
  52
  53         r600_suspend_nontimer_queries(rctx);
  54
  55         util_blitter_save_vertex_buffers(rctx->blitter,
  56                                          util_last_bit(rctx->vertex_buffer_state.enabled_mask),
  57                                          rctx->vertex_buffer_state.vb);
  58         util_blitter_save_vertex_elements(rctx->blitter, rctx->vertex_elements);
  59         util_blitter_save_vertex_shader(rctx->blitter, rctx->vs_shader);
  60         util_blitter_save_so_targets(rctx->blitter, rctx->num_so_targets,
  61                                      (struct pipe_stream_output_target**)rctx->so_targets);
  62         util_blitter_save_rasterizer(rctx->blitter, rctx->states[R600_PIPE_STATE_RASTERIZER]);
  63
  64         if (op & R600_SAVE_FRAGMENT_STATE) {
  65                 util_blitter_save_viewport(rctx->blitter, &rctx->viewport.state);
  66                 util_blitter_save_fragment_shader(rctx->blitter, rctx->ps_shader);
  67                 util_blitter_save_blend(rctx->blitter, rctx->states[R600_PIPE_STATE_BLEND]);
  68                 util_blitter_save_depth_stencil_alpha(rctx->blitter, rctx->states[R600_PIPE_STATE_DSA]);
  69                 util_blitter_save_stencil_ref(rctx->blitter, &rctx->stencil_ref.pipe_state);
  70                 util_blitter_save_sample_mask(rctx->blitter, rctx->sample_mask.sample_mask);
  71         }
  72
  73         if (op & R600_SAVE_FRAMEBUFFER)
  74                 util_blitter_save_framebuffer(rctx->blitter, &rctx->framebuffer);
  75
  76         if (op & R600_SAVE_TEXTURES) {
  77                 util_blitter_save_fragment_sampler_states(
  78                         rctx->blitter, util_last_bit(rctx->samplers[PIPE_SHADER_FRAGMENT].states.enabled_mask),
  79                         (void**)rctx->samplers[PIPE_SHADER_FRAGMENT].states.states);
  80
  81                 util_blitter_save_fragment_sampler_views(
  82                         rctx->blitter, util_last_bit(rctx->samplers[PIPE_SHADER_FRAGMENT].views.enabled_mask),
  83                         (struct pipe_sampler_view**)rctx->samplers[PIPE_SHADER_FRAGMENT].views.views);
  84         }
  85
  86         if ((op & R600_DISABLE_RENDER_COND) && rctx->current_render_cond) {
  87                 rctx->saved_render_cond = rctx->current_render_cond;
  88                 rctx->saved_render_cond_mode = rctx->current_render_cond_mode;
  89                 rctx->context.render_condition(&rctx->context, NULL, 0);
  90         }
  91
  92 }
  93
  94 static void r600_blitter_end(struct pipe_context *ctx)
  95 {
  96         struct r600_context *rctx = (struct r600_context *)ctx;
  97         if (rctx->saved_render_cond) {
  98                 rctx->context.render_condition(&rctx->context,
  99                                                rctx->saved_render_cond,
 100                                                rctx->saved_render_cond_mode);
 101                 rctx->saved_render_cond = NULL;
 102         }
 103         r600_resume_nontimer_queries(rctx);
 104 }
 105
 106 static unsigned u_max_layer(struct pipe_resource *r, unsigned level)
 107 {
 108         switch (r->target) {
 109         case PIPE_TEXTURE_CUBE:
 110                 return 6 - 1;
 111         case PIPE_TEXTURE_3D:
 112                 return u_minify(r->depth0, level) - 1;
 113         case PIPE_TEXTURE_1D_ARRAY:
 114         case PIPE_TEXTURE_2D_ARRAY:
 115                 return r->array_size - 1;
 116         default:
 117                 return 0;
 118         }
 119 }
 120
 121 static unsigned u_max_sample(struct pipe_resource *r)
 122 {
 123         return r->nr_samples ? r->nr_samples - 1 : 0;
 124 }
 125
 126 void r600_blit_decompress_depth(struct pipe_context *ctx,
 127                 struct r600_texture *texture,
 128                 struct r600_texture *staging,
 129                 unsigned first_level, unsigned last_level,
 130                 unsigned first_layer, unsigned last_layer,
 131                 unsigned first_sample, unsigned last_sample)
 132 {
 133         struct r600_context *rctx = (struct r600_context *)ctx;
 134         unsigned layer, level, sample, checked_last_layer, max_layer, max_sample;
 135         struct r600_texture *flushed_depth_texture = staging ?
 136                         staging : texture->flushed_depth_texture;
 137         const struct util_format_description *desc =
 138                 util_format_description(texture->resource.b.b.format);
 139         float depth;
 140
 141         if (!staging && !texture->dirty_level_mask)
 142                 return;
 143
 144         max_sample = u_max_sample(&texture->resource.b.b);
 145
 146         /* XXX Decompressing MSAA depth textures is broken on R6xx.
 147          * There is also a hardlock if CMASK and FMASK are not present.
 148          * Just skip this until we find out how to fix it. */
 149         if (rctx->chip_class == R600 && max_sample > 0) {
 150                 texture->dirty_level_mask = 0;
 151                 return;
 152         }
 153
 154         if (rctx->family == CHIP_RV610 || rctx->family == CHIP_RV630 ||
 155             rctx->family == CHIP_RV620 || rctx->family == CHIP_RV635)
 156                 depth = 0.0f;
 157         else
 158                 depth = 1.0f;
 159
 160         /* Enable decompression in DB_RENDER_CONTROL */
 161         rctx->db_misc_state.flush_depthstencil_through_cb = true;
 162         rctx->db_misc_state.copy_depth = util_format_has_depth(desc);
 163         rctx->db_misc_state.copy_stencil = util_format_has_stencil(desc);
 164         rctx->db_misc_state.copy_sample = first_sample;
 165         r600_atom_dirty(rctx, &rctx->db_misc_state.atom);
 166
 167
 168         for (level = first_level; level <= last_level; level++) {
 169                 if (!staging && !(texture->dirty_level_mask & (1 << level)))
 170                         continue;
 171
 172                 /* The smaller the mipmap level, the less layers there are
 173                  * as far as 3D textures are concerned. */
 174                 max_layer = u_max_layer(&texture->resource.b.b, level);
 175                 checked_last_layer = last_layer < max_layer ? last_layer : max_layer;
 176
 177                 for (layer = first_layer; layer <= checked_last_layer; layer++) {
 178                         for (sample = first_sample; sample <= last_sample; sample++) {
 179                                 struct pipe_surface *zsurf, *cbsurf, surf_tmpl;
 180
 181                                 if (sample != rctx->db_misc_state.copy_sample) {
 182                                         rctx->db_misc_state.copy_sample = sample;
 183                                         r600_atom_dirty(rctx, &rctx->db_misc_state.atom);
 184                                 }
 185
 186                                 surf_tmpl.format = texture->resource.b.b.format;
 187                                 surf_tmpl.u.tex.level = level;
 188                                 surf_tmpl.u.tex.first_layer = layer;
 189                                 surf_tmpl.u.tex.last_layer = layer;
 190                                 surf_tmpl.usage = PIPE_BIND_DEPTH_STENCIL;
 191
 192                                 zsurf = ctx->create_surface(ctx, &texture->resource.b.b, &surf_tmpl);
 193
 194                                 surf_tmpl.format = flushed_depth_texture->resource.b.b.format;
 195                                 surf_tmpl.u.tex.level = level;
 196                                 surf_tmpl.u.tex.first_layer = layer;
 197                                 surf_tmpl.u.tex.last_layer = layer;
 198                                 surf_tmpl.usage = PIPE_BIND_RENDER_TARGET;
 199                                 cbsurf = ctx->create_surface(ctx,
 200                                                 &flushed_depth_texture->resource.b.b, &surf_tmpl);
 201
 202                                 r600_blitter_begin(ctx, R600_DECOMPRESS);
 203                                 util_blitter_custom_depth_stencil(rctx->blitter, zsurf, cbsurf, 1 << sample,
 204                                                                   rctx->custom_dsa_flush, depth);
 205                                 r600_blitter_end(ctx);
 206
 207                                 pipe_surface_reference(&zsurf, NULL);
 208                                 pipe_surface_reference(&cbsurf, NULL);
 209                         }
 210                 }
 211
 212                 /* The texture will always be dirty if some layers or samples aren't flushed.
 213                  * I don't think this case occurs often though. */
 214                 if (!staging &&
 215                     first_layer == 0 && last_layer == max_layer &&
 216                     first_sample == 0 && last_sample == max_sample) {
 217                         texture->dirty_level_mask &= ~(1 << level);
 218                 }
 219         }
 220
 221         /* reenable compression in DB_RENDER_CONTROL */
 222         rctx->db_misc_state.flush_depthstencil_through_cb = false;
 223         r600_atom_dirty(rctx, &rctx->db_misc_state.atom);
 224 }
 225
 226 void r600_decompress_depth_textures(struct r600_context *rctx,
 227                                struct r600_samplerview_state *textures)
 228 {
 229         unsigned i;
 230         unsigned depth_texture_mask = textures->compressed_depthtex_mask;
 231
 232         while (depth_texture_mask) {
 233                 struct pipe_sampler_view *view;
 234                 struct r600_texture *tex;
 235
 236                 i = u_bit_scan(&depth_texture_mask);
 237
 238                 view = &textures->views[i]->base;
 239                 assert(view);
 240
 241                 tex = (struct r600_texture *)view->texture;
 242                 assert(tex->is_depth && !tex->is_flushing_texture);
 243
 244                 r600_blit_decompress_depth(&rctx->context, tex, NULL,
 245                                            view->u.tex.first_level, view->u.tex.last_level,
 246                                            0, u_max_layer(&tex->resource.b.b, view->u.tex.first_level),
 247                                            0, u_max_sample(&tex->resource.b.b));
 248         }
 249 }
 250
 251 static void r600_blit_decompress_color(struct pipe_context *ctx,
 252                 struct r600_texture *rtex,
 253                 unsigned first_level, unsigned last_level,
 254                 unsigned first_layer, unsigned last_layer)
 255 {
 256         struct r600_context *rctx = (struct r600_context *)ctx;
 257         unsigned layer, level, checked_last_layer, max_layer;
 258
 259         assert(rctx->chip_class != CAYMAN);
 260
 261         if (!rtex->dirty_level_mask)
 262                 return;
 263
 264         for (level = first_level; level <= last_level; level++) {
 265                 if (!(rtex->dirty_level_mask & (1 << level)))
 266                         continue;
 267
 268                 /* The smaller the mipmap level, the less layers there are
 269                  * as far as 3D textures are concerned. */
 270                 max_layer = u_max_layer(&rtex->resource.b.b, level);
 271                 checked_last_layer = last_layer < max_layer ? last_layer : max_layer;
 272
 273                 for (layer = first_layer; layer <= checked_last_layer; layer++) {
 274                         struct pipe_surface *cbsurf, surf_tmpl;
 275
 276                         surf_tmpl.format = rtex->resource.b.b.format;
 277                         surf_tmpl.u.tex.level = level;
 278                         surf_tmpl.u.tex.first_layer = layer;
 279                         surf_tmpl.u.tex.last_layer = layer;
 280                         surf_tmpl.usage = PIPE_BIND_RENDER_TARGET;
 281                         cbsurf = ctx->create_surface(ctx, &rtex->resource.b.b, &surf_tmpl);
 282
 283                         r600_blitter_begin(ctx, R600_DECOMPRESS);
 284                         util_blitter_custom_color(rctx->blitter, cbsurf,
 285                                                   rctx->custom_blend_decompress);
 286                         r600_blitter_end(ctx);
 287
 288                         pipe_surface_reference(&cbsurf, NULL);
 289                 }
 290
 291                 /* The texture will always be dirty if some layers or samples aren't flushed.
 292                  * I don't think this case occurs often though. */
 293                 if (first_layer == 0 && last_layer == max_layer) {
 294                         rtex->dirty_level_mask &= ~(1 << level);
 295                 }
 296         }
 297 }
 298
 299 void r600_decompress_color_textures(struct r600_context *rctx,
 300                                     struct r600_samplerview_state *textures)
 301 {
 302         unsigned i;
 303         unsigned mask = textures->compressed_colortex_mask;
 304
 305         /* Cayman cannot decompress an MSAA colorbuffer,
 306          * but it can read it compressed, so skip this. */
 307         assert(rctx->chip_class != CAYMAN);
 308         if (rctx->chip_class == CAYMAN) {
 309                 return;
 310         }
 311
 312         while (mask) {
 313                 struct pipe_sampler_view *view;
 314                 struct r600_texture *tex;
 315
 316                 i = u_bit_scan(&mask);
 317
 318                 view = &textures->views[i]->base;
 319                 assert(view);
 320
 321                 tex = (struct r600_texture *)view->texture;
 322                 assert(tex->cmask_size && tex->fmask_size);
 323
 324                 r600_blit_decompress_color(&rctx->context, tex,
 325                                            view->u.tex.first_level, view->u.tex.last_level,
 326                                            0, u_max_layer(&tex->resource.b.b, view->u.tex.first_level));
 327         }
 328 }
 329
 330 static void r600_copy_first_sample(struct pipe_context *ctx,
 331                                    const struct pipe_resolve_info *info)
 332 {
 333         struct r600_context *rctx = (struct r600_context *)ctx;
 334         struct r600_texture *rsrc = (struct r600_texture*)info->src.res;
 335         struct pipe_surface *dst_view, dst_templ;
 336         struct pipe_sampler_view src_templ, *src_view;
 337         struct pipe_box box;
 338
 339         if (rsrc->is_depth && !rsrc->is_flushing_texture) {
 340                 if (!r600_init_flushed_depth_texture(ctx, info->src.res, NULL))
 341                         return; /* error */
 342
 343                 /* Decompress the first sample only. */
 344                 r600_blit_decompress_depth(ctx, rsrc, NULL,
 345                                            0, 0,
 346                                            info->src.layer, info->src.layer,
 347                                            0, 0);
 348         }
 349         if (rctx->chip_class != CAYMAN && rsrc->fmask_size && rsrc->cmask_size) {
 350                 r600_blit_decompress_color(ctx, rsrc,
 351                                            0, 0,
 352                                            info->src.layer, info->src.layer);
 353         }
 354
 355         /* this is correct for upside-down blits too */
 356         u_box_2d(info->src.x0,
 357                  info->src.y0,
 358                  info->src.x1 - info->src.x0,
 359                  info->src.y1 - info->src.y0, &box);
 360
 361         /* Initialize the surface. */
 362         util_blitter_default_dst_texture(&dst_templ, info->dst.res,
 363                                          info->dst.level, info->dst.layer, &box);
 364         dst_view = ctx->create_surface(ctx, info->dst.res, &dst_templ);
 365
 366         /* Initialize the sampler view. */
 367         util_blitter_default_src_texture(&src_templ, info->src.res, 0);
 368         src_view = ctx->create_sampler_view(ctx, info->src.res, &src_templ);
 369
 370         /* Copy the first sample into dst. */
 371         r600_blitter_begin(ctx, R600_COPY_TEXTURE);
 372         util_blitter_copy_texture_view(rctx->blitter, dst_view, ~0, info->dst.x0,
 373                                        info->dst.y0, src_view, 0, &box,
 374                                        info->src.res->width0, info->src.res->height0,
 375                                        info->mask);
 376         r600_blitter_end(ctx);
 377
 378         pipe_surface_reference(&dst_view, NULL);
 379         pipe_sampler_view_reference(&src_view, NULL);
 380 }
 381
 382 static boolean is_simple_resolve(const struct pipe_resolve_info *info)
 383 {
 384    unsigned dst_width = u_minify(info->dst.res->width0, info->dst.level);
 385    unsigned dst_height = u_minify(info->dst.res->height0, info->dst.level);
 386
 387    return info->dst.res->format == info->src.res->format &&
 388           dst_width == info->src.res->width0 &&
 389           dst_height == info->src.res->height0 &&
 390           info->dst.x0 == 0 &&
 391           info->dst.y0 == 0 &&
 392           info->dst.x1 == dst_width &&
 393           info->dst.y1 == dst_height &&
 394           info->src.x0 == 0 &&
 395           info->src.y0 == 0 &&
 396           info->src.x1 == dst_width &&
 397           info->src.y1 == dst_height;
 398 }
 399
 400 static void r600_color_resolve(struct pipe_context *ctx,
 401                                const struct pipe_resolve_info *info)
 402 {
 403         struct r600_context *rctx = (struct r600_context *)ctx;
 404         struct pipe_screen *screen = ctx->screen;
 405         struct pipe_resource *tmp, templ;
 406         struct pipe_box box;
 407         unsigned sample_mask =
 408                 rctx->chip_class == CAYMAN ? ~0 : ((1ull << MAX2(1, info->src.res->nr_samples)) - 1);
 409
 410         assert((info->mask & PIPE_MASK_RGBA) == PIPE_MASK_RGBA);
 411
 412         if (is_simple_resolve(info)) {
 413                 r600_blitter_begin(ctx, R600_COLOR_RESOLVE);
 414                 util_blitter_custom_resolve_color(rctx->blitter,
 415                                                   info->dst.res, info->dst.level, info->dst.layer,
 416                                                   info->src.res, info->src.layer,
 417                                                   sample_mask, rctx->custom_blend_resolve);
 418                 r600_blitter_end(ctx);
 419                 return;
 420         }
 421
 422         /* resolve into a temporary texture, then blit */
 423         templ.target = PIPE_TEXTURE_2D;
 424         templ.format = info->src.res->format;
 425         templ.width0 = info->src.res->width0;
 426         templ.height0 = info->src.res->height0;
 427         templ.depth0 = 1;
 428         templ.array_size = 1;
 429         templ.last_level = 0;
 430         templ.nr_samples = 0;
 431         templ.usage = PIPE_USAGE_STATIC;
 432         templ.bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 433         templ.flags = 0;
 434
 435         tmp = screen->resource_create(screen, &templ);
 436
 437         /* XXX use scissor, so that only the needed part of the resource is resolved */
 438         r600_blitter_begin(ctx, R600_COLOR_RESOLVE);
 439         util_blitter_custom_resolve_color(rctx->blitter,
 440                                           tmp, 0, 0,
 441                                           info->src.res, info->src.layer,
 442                                           sample_mask, rctx->custom_blend_resolve);
 443         r600_blitter_end(ctx);
 444
 445         /* this is correct for upside-down blits too */
 446         u_box_2d(info->src.x0,
 447                  info->src.y0,
 448                  info->src.x1 - info->src.x0,
 449                  info->src.y1 - info->src.y0, &box);
 450
 451         r600_blitter_begin(ctx, R600_COPY_TEXTURE);
 452         util_blitter_copy_texture(rctx->blitter, info->dst.res, info->dst.level,
 453                                   ~0, info->dst.x0, info->dst.y0, info->dst.layer,
 454                                   tmp, 0, 0, &box);
 455         r600_blitter_end(ctx);
 456
 457         pipe_resource_reference(&tmp, NULL);
 458 }
 459
 460 static void r600_resource_resolve(struct pipe_context *ctx,
 461                                   const struct pipe_resolve_info *info)
 462 {
 463         /* make sure we're doing a resolve operation */
 464         assert(info->src.res->nr_samples > 1);
 465         assert(info->dst.res->nr_samples <= 1);
 466
 467         /* limitations of multisample resources */
 468         assert(info->src.res->last_level == 0);
 469         assert(info->src.res->target == PIPE_TEXTURE_2D ||
 470                info->src.res->target == PIPE_TEXTURE_2D_ARRAY);
 471
 472         /* check if the resolve box is valid */
 473         assert(info->dst.x0 < info->dst.x1);
 474         assert(info->dst.y0 < info->dst.y1);
 475
 476         /* scaled resolve isn't allowed */
 477         assert(abs(info->dst.x0 - info->dst.x1) ==
 478                abs(info->src.x0 - info->src.x1));
 479         assert(abs(info->dst.y0 - info->dst.y1) ==
 480                abs(info->src.y0 - info->src.y1));
 481
 482         if ((info->mask & PIPE_MASK_ZS) ||
 483             util_format_is_pure_integer(info->src.res->format)) {
 484                 r600_copy_first_sample(ctx, info);
 485         } else {
 486                 r600_color_resolve(ctx, info);
 487         }
 488 }
 489
 490 static void r600_clear(struct pipe_context *ctx, unsigned buffers,
 491                        const union pipe_color_union *color,
 492                        double depth, unsigned stencil)
 493 {
 494         struct r600_context *rctx = (struct r600_context *)ctx;
 495         struct pipe_framebuffer_state *fb = &rctx->framebuffer;
 496
 497         r600_blitter_begin(ctx, R600_CLEAR);
 498         util_blitter_clear(rctx->blitter, fb->width, fb->height,
 499                            fb->nr_cbufs, buffers, fb->nr_cbufs ? fb->cbufs[0]->format : PIPE_FORMAT_NONE,
 500                            color, depth, stencil);
 501         r600_blitter_end(ctx);
 502 }
 503
 504 static void r600_clear_render_target(struct pipe_context *ctx,
 505                                      struct pipe_surface *dst,
 506                                      const union pipe_color_union *color,
 507                                      unsigned dstx, unsigned dsty,
 508                                      unsigned width, unsigned height)
 509 {
 510         struct r600_context *rctx = (struct r600_context *)ctx;
 511
 512         r600_blitter_begin(ctx, R600_CLEAR_SURFACE);
 513         util_blitter_clear_render_target(rctx->blitter, dst, color,
 514                                          dstx, dsty, width, height);
 515         r600_blitter_end(ctx);
 516 }
 517
 518 static void r600_clear_depth_stencil(struct pipe_context *ctx,
 519                                      struct pipe_surface *dst,
 520                                      unsigned clear_flags,
 521                                      double depth,
 522                                      unsigned stencil,
 523                                      unsigned dstx, unsigned dsty,
 524                                      unsigned width, unsigned height)
 525 {
 526         struct r600_context *rctx = (struct r600_context *)ctx;
 527
 528         r600_blitter_begin(ctx, R600_CLEAR_SURFACE);
 529         util_blitter_clear_depth_stencil(rctx->blitter, dst, clear_flags, depth, stencil,
 530                                          dstx, dsty, width, height);
 531         r600_blitter_end(ctx);
 532 }
 533
 534 void r600_copy_buffer(struct pipe_context *ctx, struct
 535                       pipe_resource *dst, unsigned dstx,
 536                       struct pipe_resource *src, const struct pipe_box *src_box)
 537 {
 538         struct r600_context *rctx = (struct r600_context*)ctx;
 539
 540         if (rctx->screen->has_streamout &&
 541             /* Require dword alignment. */
 542             dstx % 4 == 0 && src_box->x % 4 == 0 && src_box->width % 4 == 0) {
 543                 r600_blitter_begin(ctx, R600_COPY_BUFFER);
 544                 util_blitter_copy_buffer(rctx->blitter, dst, dstx, src, src_box->x, src_box->width);
 545                 r600_blitter_end(ctx);
 546         } else {
 547                 util_resource_copy_region(ctx, dst, 0, dstx, 0, 0, src, 0, src_box);
 548         }
 549 }
 550
 551 struct texture_orig_info {
 552         unsigned format;
 553         unsigned width0;
 554         unsigned height0;
 555         unsigned npix_x;
 556         unsigned npix_y;
 557         unsigned npix0_x;
 558         unsigned npix0_y;
 559 };
 560
 561 static void r600_compressed_to_blittable(struct pipe_resource *tex,
 562                                    unsigned level,
 563                                    struct texture_orig_info *orig)
 564 {
 565         struct r600_texture *rtex = (struct r600_texture*)tex;
 566         unsigned pixsize = util_format_get_blocksize(rtex->resource.b.b.format);
 567         int new_format;
 568         int new_height, new_width;
 569
 570         orig->format = tex->format;
 571         orig->width0 = tex->width0;
 572         orig->height0 = tex->height0;
 573         orig->npix0_x = rtex->surface.level[0].npix_x;
 574         orig->npix0_y = rtex->surface.level[0].npix_y;
 575         orig->npix_x = rtex->surface.level[level].npix_x;
 576         orig->npix_y = rtex->surface.level[level].npix_y;
 577
 578         if (pixsize == 8)
 579                 new_format = PIPE_FORMAT_R16G16B16A16_UINT; /* 64-bit block */
 580         else
 581                 new_format = PIPE_FORMAT_R32G32B32A32_UINT; /* 128-bit block */
 582
 583         new_width = util_format_get_nblocksx(tex->format, orig->width0);
 584         new_height = util_format_get_nblocksy(tex->format, orig->height0);
 585
 586         tex->width0 = new_width;
 587         tex->height0 = new_height;
 588         tex->format = new_format;
 589         rtex->surface.level[0].npix_x = util_format_get_nblocksx(orig->format, orig->npix0_x);
 590         rtex->surface.level[0].npix_y = util_format_get_nblocksy(orig->format, orig->npix0_y);
 591         rtex->surface.level[level].npix_x = util_format_get_nblocksx(orig->format, orig->npix_x);
 592         rtex->surface.level[level].npix_y = util_format_get_nblocksy(orig->format, orig->npix_y);
 593 }
 594
 595 static void r600_subsampled_2x1_32bpp_to_blittable(struct pipe_resource *tex,
 596                                                    unsigned level,
 597                                                    struct texture_orig_info *orig)
 598 {
 599         struct r600_texture *rtex = (struct r600_texture*)tex;
 600
 601         orig->format = tex->format;
 602         orig->width0 = tex->width0;
 603         orig->height0 = tex->height0;
 604         orig->npix0_x = rtex->surface.level[0].npix_x;
 605         orig->npix0_y = rtex->surface.level[0].npix_y;
 606         orig->npix_x = rtex->surface.level[level].npix_x;
 607         orig->npix_y = rtex->surface.level[level].npix_y;
 608
 609         tex->width0 = util_format_get_nblocksx(orig->format, orig->width0);
 610         tex->format = PIPE_FORMAT_R8G8B8A8_UINT;
 611         rtex->surface.level[0].npix_x = util_format_get_nblocksx(orig->format, orig->npix0_x);
 612         rtex->surface.level[level].npix_x = util_format_get_nblocksx(orig->format, orig->npix_x);
 613 }
 614
 615 static void r600_change_format(struct pipe_resource *tex,
 616                                unsigned level,
 617                                struct texture_orig_info *orig,
 618                                enum pipe_format format)
 619 {
 620         struct r600_texture *rtex = (struct r600_texture*)tex;
 621
 622         orig->format = tex->format;
 623         orig->width0 = tex->width0;
 624         orig->height0 = tex->height0;
 625         orig->npix0_x = rtex->surface.level[0].npix_x;
 626         orig->npix0_y = rtex->surface.level[0].npix_y;
 627         orig->npix_x = rtex->surface.level[level].npix_x;
 628         orig->npix_y = rtex->surface.level[level].npix_y;
 629
 630         tex->format = format;
 631 }
 632
 633 static void r600_reset_blittable_to_orig(struct pipe_resource *tex,
 634                                          unsigned level,
 635                                          struct texture_orig_info *orig)
 636 {
 637         struct r600_texture *rtex = (struct r600_texture*)tex;
 638
 639         tex->format = orig->format;
 640         tex->width0 = orig->width0;
 641         tex->height0 = orig->height0;
 642         rtex->surface.level[0].npix_x = orig->npix0_x;
 643         rtex->surface.level[0].npix_y = orig->npix0_y;
 644         rtex->surface.level[level].npix_x = orig->npix_x;
 645         rtex->surface.level[level].npix_y = orig->npix_y;
 646 }
 647
 648 static bool util_format_is_subsampled_2x1_32bpp(enum pipe_format format)
 649 {
 650         const struct util_format_description *desc = util_format_description(format);
 651
 652         return desc->layout == UTIL_FORMAT_LAYOUT_SUBSAMPLED &&
 653                desc->block.width == 2 &&
 654                desc->block.height == 1 &&
 655                desc->block.bits == 32;
 656 }
 657
 658 static void r600_resource_copy_region(struct pipe_context *ctx,
 659                                       struct pipe_resource *dst,
 660                                       unsigned dst_level,
 661                                       unsigned dstx, unsigned dsty, unsigned dstz,
 662                                       struct pipe_resource *src,
 663                                       unsigned src_level,
 664                                       const struct pipe_box *src_box)
 665 {
 666         struct r600_context *rctx = (struct r600_context *)ctx;
 667         struct r600_texture *rsrc = (struct r600_texture*)src;
 668         struct texture_orig_info orig_info[2];
 669         struct pipe_box sbox;
 670         const struct pipe_box *psbox = src_box;
 671         boolean restore_orig[2];
 672         unsigned last_sample, i;
 673
 674         memset(orig_info, 0, sizeof(orig_info));
 675
 676         /* Handle buffers first. */
 677         if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
 678                 r600_copy_buffer(ctx, dst, dstx, src, src_box);
 679                 return;
 680         }
 681
 682         assert(u_max_sample(dst) == u_max_sample(src));
 683         last_sample = u_max_sample(dst);
 684
 685         /* This must be done before entering u_blitter to avoid recursion. */
 686         if (rsrc->is_depth && !rsrc->is_flushing_texture) {
 687                 if (!r600_init_flushed_depth_texture(ctx, src, NULL))
 688                         return; /* error */
 689
 690                 r600_blit_decompress_depth(ctx, rsrc, NULL,
 691                                            src_level, src_level,
 692                                            src_box->z, src_box->z + src_box->depth - 1,
 693                                            0, u_max_sample(src));
 694         }
 695         if (rctx->chip_class != CAYMAN && rsrc->fmask_size && rsrc->cmask_size) {
 696                 r600_blit_decompress_color(ctx, rsrc, src_level, src_level,
 697                                            src_box->z, src_box->z + src_box->depth - 1);
 698         }
 699
 700         restore_orig[0] = restore_orig[1] = FALSE;
 701
 702         if (util_format_is_compressed(src->format) &&
 703             util_format_is_compressed(dst->format)) {
 704                 r600_compressed_to_blittable(src, src_level, &orig_info[0]);
 705                 restore_orig[0] = TRUE;
 706                 sbox.x = util_format_get_nblocksx(orig_info[0].format, src_box->x);
 707                 sbox.y = util_format_get_nblocksy(orig_info[0].format, src_box->y);
 708                 sbox.z = src_box->z;
 709                 sbox.width = util_format_get_nblocksx(orig_info[0].format, src_box->width);
 710                 sbox.height = util_format_get_nblocksy(orig_info[0].format, src_box->height);
 711                 sbox.depth = src_box->depth;
 712                 psbox = &sbox;
 713
 714                 r600_compressed_to_blittable(dst, dst_level, &orig_info[1]);
 715                 restore_orig[1] = TRUE;
 716                 /* translate the dst box as well */
 717                 dstx = util_format_get_nblocksx(orig_info[1].format, dstx);
 718                 dsty = util_format_get_nblocksy(orig_info[1].format, dsty);
 719         } else if (!util_blitter_is_copy_supported(rctx->blitter, dst, src,
 720                                                    PIPE_MASK_RGBAZS)) {
 721                 if (util_format_is_subsampled_2x1_32bpp(src->format) &&
 722                     util_format_is_subsampled_2x1_32bpp(dst->format)) {
 723                         r600_subsampled_2x1_32bpp_to_blittable(src, src_level, &orig_info[0]);
 724                         r600_subsampled_2x1_32bpp_to_blittable(dst, dst_level, &orig_info[1]);
 725
 726                         sbox = *src_box;
 727                         sbox.x = util_format_get_nblocksx(orig_info[0].format, src_box->x);
 728                         sbox.width = util_format_get_nblocksx(orig_info[0].format, src_box->width);
 729                         psbox = &sbox;
 730
 731                         dstx = util_format_get_nblocksx(orig_info[1].format, dstx);
 732                 } else {
 733                         unsigned blocksize = util_format_get_blocksize(src->format);
 734
 735                         switch (blocksize) {
 736                         case 1:
 737                                 r600_change_format(src, src_level, &orig_info[0],
 738                                                    PIPE_FORMAT_R8_UNORM);
 739                                 r600_change_format(dst, dst_level, &orig_info[1],
 740                                                    PIPE_FORMAT_R8_UNORM);
 741                                 break;
 742                         case 4:
 743                                 r600_change_format(src, src_level, &orig_info[0],
 744                                                    PIPE_FORMAT_R8G8B8A8_UNORM);
 745                                 r600_change_format(dst, dst_level, &orig_info[1],
 746                                                    PIPE_FORMAT_R8G8B8A8_UNORM);
 747                                 break;
 748                         default:
 749                                 fprintf(stderr, "Unhandled format %s with blocksize %u\n",
 750                                         util_format_short_name(src->format), blocksize);
 751                                 assert(0);
 752                         }
 753                 }
 754                 restore_orig[0] = TRUE;
 755                 restore_orig[1] = TRUE;
 756         }
 757
 758         /* XXX Properly implement multisample textures on Cayman. In the meantime,
 759          * copy only the first sample (which is the only one that doesn't return garbage). */
 760         if (rctx->chip_class == CAYMAN) {
 761                 r600_blitter_begin(ctx, R600_COPY_TEXTURE);
 762                 util_blitter_copy_texture(rctx->blitter, dst, dst_level, ~0, dstx, dsty, dstz,
 763                                           src, src_level, 0, psbox);
 764                 r600_blitter_end(ctx);
 765         } else {
 766                 for (i = 0; i <= last_sample; i++) {
 767                         r600_blitter_begin(ctx, R600_COPY_TEXTURE);
 768                         util_blitter_copy_texture(rctx->blitter, dst, dst_level, 1 << i, dstx, dsty, dstz,
 769                                                   src, src_level, i, psbox);
 770                         r600_blitter_end(ctx);
 771                 }
 772         }
 773
 774         if (restore_orig[0])
 775                 r600_reset_blittable_to_orig(src, src_level, &orig_info[0]);
 776
 777         if (restore_orig[1])
 778                 r600_reset_blittable_to_orig(dst, dst_level, &orig_info[1]);
 779 }
 780
 781 void r600_init_blit_functions(struct r600_context *rctx)
 782 {
 783         rctx->context.clear = r600_clear;
 784         rctx->context.clear_render_target = r600_clear_render_target;
 785         rctx->context.clear_depth_stencil = r600_clear_depth_stencil;
 786         rctx->context.resource_copy_region = r600_resource_copy_region;
 787         rctx->context.resource_resolve = r600_resource_resolve;
 788 }