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  1. /*
  2.  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
  3.  * Copyright 2010 Marek Olšák <maraeo@gmail.com>
  4.  *
  5.  * Permission is hereby granted, free of charge, to any person obtaining a
  6.  * copy of this software and associated documentation files (the "Software"),
  7.  * to deal in the Software without restriction, including without limitation
  8.  * on the rights to use, copy, modify, merge, publish, distribute, sub
  9.  * license, and/or sell copies of the Software, and to permit persons to whom
  10.  * the Software is furnished to do so, subject to the following conditions:
  11.  *
  12.  * The above copyright notice and this permission notice (including the next
  13.  * paragraph) shall be included in all copies or substantial portions of the
  14.  * Software.
  15.  *
  16.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18.  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19.  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  20.  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21.  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  22.  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  23.  
  24. #include "r300_transfer.h"
  25. #include "r300_texture_desc.h"
  26. #include "r300_screen_buffer.h"
  27.  
  28. #include "util/u_memory.h"
  29. #include "util/u_format.h"
  30. #include "util/u_box.h"
  31.  
  32. struct r300_transfer {
  33.     /* Parent class */
  34.     struct pipe_transfer transfer;
  35.  
  36.     /* Offset from start of buffer. */
  37.     unsigned offset;
  38.  
  39.     /* Linear texture. */
  40.     struct r300_resource *linear_texture;
  41. };
  42.  
  43. /* Convenience cast wrapper. */
  44. static INLINE struct r300_transfer*
  45. r300_transfer(struct pipe_transfer* transfer)
  46. {
  47.     return (struct r300_transfer*)transfer;
  48. }
  49.  
  50. /* Copy from a tiled texture to a detiled one. */
  51. static void r300_copy_from_tiled_texture(struct pipe_context *ctx,
  52.                                          struct r300_transfer *r300transfer)
  53. {
  54.     struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer;
  55.     struct pipe_resource *src = transfer->resource;
  56.     struct pipe_resource *dst = &r300transfer->linear_texture->b.b;
  57.  
  58.     if (src->nr_samples <= 1) {
  59.         ctx->resource_copy_region(ctx, dst, 0, 0, 0, 0,
  60.                                   src, transfer->level, &transfer->box);
  61.     } else {
  62.         /* Resolve the resource. */
  63.         struct pipe_blit_info blit;
  64.  
  65.         memset(&blit, 0, sizeof(blit));
  66.         blit.src.resource = src;
  67.         blit.src.format = src->format;
  68.         blit.src.level = transfer->level;
  69.         blit.src.box = transfer->box;
  70.         blit.dst.resource = dst;
  71.         blit.dst.format = dst->format;
  72.         blit.dst.box.width = transfer->box.width;
  73.         blit.dst.box.height = transfer->box.height;
  74.         blit.dst.box.depth = transfer->box.depth;
  75.         blit.mask = PIPE_MASK_RGBA;
  76.         blit.filter = PIPE_TEX_FILTER_NEAREST;
  77.  
  78.         ctx->blit(ctx, &blit);
  79.     }
  80. }
  81.  
  82. /* Copy a detiled texture to a tiled one. */
  83. static void r300_copy_into_tiled_texture(struct pipe_context *ctx,
  84.                                          struct r300_transfer *r300transfer)
  85. {
  86.     struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer;
  87.     struct pipe_resource *tex = transfer->resource;
  88.     struct pipe_box src_box;
  89.  
  90.     u_box_3d(0, 0, 0,
  91.              transfer->box.width, transfer->box.height, transfer->box.depth,
  92.              &src_box);
  93.  
  94.     ctx->resource_copy_region(ctx, tex, transfer->level,
  95.                               transfer->box.x, transfer->box.y, transfer->box.z,
  96.                               &r300transfer->linear_texture->b.b, 0, &src_box);
  97.  
  98.     /* XXX remove this. */
  99.     r300_flush(ctx, 0, NULL);
  100. }
  101.  
  102. void *
  103. r300_texture_transfer_map(struct pipe_context *ctx,
  104.                           struct pipe_resource *texture,
  105.                           unsigned level,
  106.                           unsigned usage,
  107.                           const struct pipe_box *box,
  108.                           struct pipe_transfer **transfer)
  109. {
  110.     struct r300_context *r300 = r300_context(ctx);
  111.     struct r300_resource *tex = r300_resource(texture);
  112.     struct r300_transfer *trans;
  113.     boolean referenced_cs, referenced_hw;
  114.     enum pipe_format format = tex->b.b.format;
  115.     char *map;
  116.  
  117.     referenced_cs =
  118.         r300->rws->cs_is_buffer_referenced(r300->cs, tex->cs_buf, RADEON_USAGE_READWRITE);
  119.     if (referenced_cs) {
  120.         referenced_hw = TRUE;
  121.     } else {
  122.         referenced_hw =
  123.             r300->rws->buffer_is_busy(tex->buf, RADEON_USAGE_READWRITE);
  124.     }
  125.  
  126.     trans = CALLOC_STRUCT(r300_transfer);
  127.     if (trans) {
  128.         /* Initialize the transfer object. */
  129.         trans->transfer.resource = texture;
  130.         trans->transfer.level = level;
  131.         trans->transfer.usage = usage;
  132.         trans->transfer.box = *box;
  133.  
  134.         /* If the texture is tiled, we must create a temporary detiled texture
  135.          * for this transfer.
  136.          * Also make write transfers pipelined. */
  137.         if (tex->tex.microtile || tex->tex.macrotile[level] ||
  138.             (referenced_hw && !(usage & PIPE_TRANSFER_READ) &&
  139.              r300_is_blit_supported(texture->format))) {
  140.             struct pipe_resource base;
  141.  
  142.             if (r300->blitter->running) {
  143.                 fprintf(stderr, "r300: ERROR: Blitter recursion in texture_get_transfer.\n");
  144.                 os_break();
  145.             }
  146.  
  147.             memset(&base, 0, sizeof(base));
  148.             base.target = PIPE_TEXTURE_2D;
  149.             base.format = texture->format;
  150.             base.width0 = box->width;
  151.             base.height0 = box->height;
  152.             base.depth0 = 1;
  153.             base.array_size = 1;
  154.             base.usage = PIPE_USAGE_STAGING;
  155.             base.flags = R300_RESOURCE_FLAG_TRANSFER;
  156.  
  157.             /* We must set the correct texture target and dimensions if needed for a 3D transfer. */
  158.             if (box->depth > 1 && util_max_layer(texture, level) > 0) {
  159.                 base.target = texture->target;
  160.  
  161.                 if (base.target == PIPE_TEXTURE_3D) {
  162.                     base.depth0 = util_next_power_of_two(box->depth);
  163.                 }
  164.             }
  165.  
  166.             /* Create the temporary texture. */
  167.             trans->linear_texture = r300_resource(
  168.                ctx->screen->resource_create(ctx->screen,
  169.                                             &base));
  170.  
  171.             if (!trans->linear_texture) {
  172.                 /* Oh crap, the thing can't create the texture.
  173.                  * Let's flush and try again. */
  174.                 r300_flush(ctx, 0, NULL);
  175.  
  176.                 trans->linear_texture = r300_resource(
  177.                    ctx->screen->resource_create(ctx->screen,
  178.                                                 &base));
  179.  
  180.                 if (!trans->linear_texture) {
  181.                     fprintf(stderr,
  182.                             "r300: Failed to create a transfer object.\n");
  183.                     FREE(trans);
  184.                     return NULL;
  185.                 }
  186.             }
  187.  
  188.             assert(!trans->linear_texture->tex.microtile &&
  189.                    !trans->linear_texture->tex.macrotile[0]);
  190.  
  191.             /* Set the stride. */
  192.             trans->transfer.stride =
  193.                     trans->linear_texture->tex.stride_in_bytes[0];
  194.             trans->transfer.layer_stride =
  195.                     trans->linear_texture->tex.layer_size_in_bytes[0];
  196.  
  197.             if (usage & PIPE_TRANSFER_READ) {
  198.                 /* We cannot map a tiled texture directly because the data is
  199.                  * in a different order, therefore we do detiling using a blit. */
  200.                 r300_copy_from_tiled_texture(ctx, trans);
  201.  
  202.                 /* Always referenced in the blit. */
  203.                 r300_flush(ctx, 0, NULL);
  204.             }
  205.         } else {
  206.             /* Unpipelined transfer. */
  207.             trans->transfer.stride = tex->tex.stride_in_bytes[level];
  208.             trans->transfer.layer_stride = tex->tex.layer_size_in_bytes[level];
  209.             trans->offset = r300_texture_get_offset(tex, level, box->z);
  210.  
  211.             if (referenced_cs &&
  212.                 !(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
  213.                 r300_flush(ctx, 0, NULL);
  214.             }
  215.         }
  216.     }
  217.  
  218.     if (trans->linear_texture) {
  219.         /* The detiled texture is of the same size as the region being mapped
  220.          * (no offset needed). */
  221.         map = r300->rws->buffer_map(trans->linear_texture->cs_buf,
  222.                                     r300->cs, usage);
  223.         if (!map) {
  224.             pipe_resource_reference(
  225.                 (struct pipe_resource**)&trans->linear_texture, NULL);
  226.             FREE(trans);
  227.             return NULL;
  228.         }
  229.         *transfer = &trans->transfer;
  230.         return map;
  231.     } else {
  232.         /* Tiling is disabled. */
  233.         map = r300->rws->buffer_map(tex->cs_buf, r300->cs, usage);
  234.         if (!map) {
  235.             FREE(trans);
  236.             return NULL;
  237.         }
  238.  
  239.         *transfer = &trans->transfer;
  240.         return map + trans->offset +
  241.             box->y / util_format_get_blockheight(format) * trans->transfer.stride +
  242.             box->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
  243.     }
  244. }
  245.  
  246. void r300_texture_transfer_unmap(struct pipe_context *ctx,
  247.                                  struct pipe_transfer *transfer)
  248. {
  249.     struct radeon_winsys *rws = r300_context(ctx)->rws;
  250.     struct r300_transfer *trans = r300_transfer(transfer);
  251.     struct r300_resource *tex = r300_resource(transfer->resource);
  252.  
  253.     if (trans->linear_texture) {
  254.         rws->buffer_unmap(trans->linear_texture->cs_buf);
  255.  
  256.         if (transfer->usage & PIPE_TRANSFER_WRITE) {
  257.             r300_copy_into_tiled_texture(ctx, trans);
  258.         }
  259.  
  260.         pipe_resource_reference(
  261.             (struct pipe_resource**)&trans->linear_texture, NULL);
  262.     } else {
  263.         rws->buffer_unmap(tex->cs_buf);
  264.     }
  265.     FREE(transfer);
  266. }
  267.