/* * Copyright 2008 Corbin Simpson * Copyright 2010 Marek Olšák * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * on the rights to use, copy, modify, merge, publish, distribute, sub * license, and/or sell copies of the Software, and to permit persons to whom * the Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include "r300_transfer.h" #include "r300_texture_desc.h" #include "r300_screen_buffer.h" #include "util/u_memory.h" #include "util/u_format.h" #include "util/u_box.h" struct r300_transfer { /* Parent class */ struct pipe_transfer transfer; /* Offset from start of buffer. */ unsigned offset; /* Linear texture. */ struct r300_resource *linear_texture; }; /* Convenience cast wrapper. */ static INLINE struct r300_transfer* r300_transfer(struct pipe_transfer* transfer) { return (struct r300_transfer*)transfer; } /* Copy from a tiled texture to a detiled one. */ static void r300_copy_from_tiled_texture(struct pipe_context *ctx, struct r300_transfer *r300transfer) { struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer; struct pipe_resource *tex = transfer->resource; ctx->resource_copy_region(ctx, &r300transfer->linear_texture->b.b, 0, 0, 0, 0, tex, transfer->level, &transfer->box); } /* Copy a detiled texture to a tiled one. */ static void r300_copy_into_tiled_texture(struct pipe_context *ctx, struct r300_transfer *r300transfer) { struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer; struct pipe_resource *tex = transfer->resource; struct pipe_box src_box; u_box_origin_2d(transfer->box.width, transfer->box.height, &src_box); ctx->resource_copy_region(ctx, tex, transfer->level, transfer->box.x, transfer->box.y, transfer->box.z, &r300transfer->linear_texture->b.b, 0, &src_box); /* XXX remove this. */ r300_flush(ctx, 0, NULL); } void * r300_texture_transfer_map(struct pipe_context *ctx, struct pipe_resource *texture, unsigned level, unsigned usage, const struct pipe_box *box, struct pipe_transfer **transfer) { struct r300_context *r300 = r300_context(ctx); struct r300_resource *tex = r300_resource(texture); struct r300_transfer *trans; struct pipe_resource base; boolean referenced_cs, referenced_hw; enum pipe_format format = tex->b.b.format; char *map; referenced_cs = r300->rws->cs_is_buffer_referenced(r300->cs, tex->cs_buf, RADEON_USAGE_READWRITE); if (referenced_cs) { referenced_hw = TRUE; } else { referenced_hw = r300->rws->buffer_is_busy(tex->buf, RADEON_USAGE_READWRITE); } trans = CALLOC_STRUCT(r300_transfer); if (trans) { /* Initialize the transfer object. */ trans->transfer.resource = texture; trans->transfer.level = level; trans->transfer.usage = usage; trans->transfer.box = *box; /* If the texture is tiled, we must create a temporary detiled texture * for this transfer. * Also make write transfers pipelined. */ if (tex->tex.microtile || tex->tex.macrotile[level] || (referenced_hw && !(usage & PIPE_TRANSFER_READ) && r300_is_blit_supported(texture->format))) { if (r300->blitter->running) { fprintf(stderr, "r300: ERROR: Blitter recursion in texture_get_transfer.\n"); os_break(); } base.target = PIPE_TEXTURE_2D; base.format = texture->format; base.width0 = box->width; base.height0 = box->height; base.depth0 = 1; base.array_size = 1; base.last_level = 0; base.nr_samples = 0; base.usage = PIPE_USAGE_STAGING; base.bind = 0; if (usage & PIPE_TRANSFER_READ) { base.bind |= PIPE_BIND_SAMPLER_VIEW; } if (usage & PIPE_TRANSFER_WRITE) { base.bind |= PIPE_BIND_RENDER_TARGET; } base.flags = R300_RESOURCE_FLAG_TRANSFER; /* For texture reading, the temporary (detiled) texture is used as * a render target when blitting from a tiled texture. */ if (usage & PIPE_TRANSFER_READ) { base.bind |= PIPE_BIND_RENDER_TARGET; } /* For texture writing, the temporary texture is used as a sampler * when blitting into a tiled texture. */ if (usage & PIPE_TRANSFER_WRITE) { base.bind |= PIPE_BIND_SAMPLER_VIEW; } /* Create the temporary texture. */ trans->linear_texture = r300_resource( ctx->screen->resource_create(ctx->screen, &base)); if (!trans->linear_texture) { /* Oh crap, the thing can't create the texture. * Let's flush and try again. */ r300_flush(ctx, 0, NULL); trans->linear_texture = r300_resource( ctx->screen->resource_create(ctx->screen, &base)); if (!trans->linear_texture) { fprintf(stderr, "r300: Failed to create a transfer object.\n"); FREE(trans); return NULL; } } assert(!trans->linear_texture->tex.microtile && !trans->linear_texture->tex.macrotile[0]); /* Set the stride. */ trans->transfer.stride = trans->linear_texture->tex.stride_in_bytes[0]; if (usage & PIPE_TRANSFER_READ) { /* We cannot map a tiled texture directly because the data is * in a different order, therefore we do detiling using a blit. */ r300_copy_from_tiled_texture(ctx, trans); /* Always referenced in the blit. */ r300_flush(ctx, 0, NULL); } } else { /* Unpipelined transfer. */ trans->transfer.stride = tex->tex.stride_in_bytes[level]; trans->offset = r300_texture_get_offset(tex, level, box->z); if (referenced_cs && !(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) { r300_flush(ctx, 0, NULL); } } } if (trans->linear_texture) { /* The detiled texture is of the same size as the region being mapped * (no offset needed). */ map = r300->rws->buffer_map(trans->linear_texture->cs_buf, r300->cs, usage); if (!map) { pipe_resource_reference( (struct pipe_resource**)&trans->linear_texture, NULL); FREE(trans); return NULL; } *transfer = &trans->transfer; return map; } else { /* Tiling is disabled. */ map = r300->rws->buffer_map(tex->cs_buf, r300->cs, usage); if (!map) { FREE(trans); return NULL; } *transfer = &trans->transfer; return map + trans->offset + box->y / util_format_get_blockheight(format) * trans->transfer.stride + box->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format); } } void r300_texture_transfer_unmap(struct pipe_context *ctx, struct pipe_transfer *transfer) { struct radeon_winsys *rws = r300_context(ctx)->rws; struct r300_transfer *trans = r300_transfer(transfer); struct r300_resource *tex = r300_resource(transfer->resource); if (trans->linear_texture) { rws->buffer_unmap(trans->linear_texture->cs_buf); if (transfer->usage & PIPE_TRANSFER_WRITE) { r300_copy_into_tiled_texture(ctx, trans); } pipe_resource_reference( (struct pipe_resource**)&trans->linear_texture, NULL); } else { rws->buffer_unmap(tex->cs_buf); } FREE(transfer); }