/* * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com> * Copyright 2010 Marek Olšák <maraeo@gmail.com> * * 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_texture *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->desc.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->desc.b.b, 0, &src_box); ctx->flush(ctx, 0, NULL); } struct pipe_transfer* r300_texture_get_transfer(struct pipe_context *ctx, struct pipe_resource *texture, unsigned level, unsigned usage, const struct pipe_box *box) { struct r300_context *r300 = r300_context(ctx); struct r300_texture *tex = r300_texture(texture); struct r300_transfer *trans; struct pipe_resource base; boolean referenced_cs, referenced_hw, blittable; referenced_cs = r300->rws->cs_is_buffer_referenced(r300->cs, tex->cs_buffer, R300_REF_CS); if (referenced_cs) { referenced_hw = TRUE; } else { referenced_hw = r300->rws->cs_is_buffer_referenced(r300->cs, tex->cs_buffer, R300_REF_HW); } blittable = ctx->screen->is_format_supported( ctx->screen, texture->format, texture->target, 0, PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET, 0); trans = CALLOC_STRUCT(r300_transfer); if (trans) { /* Initialize the transfer object. */ pipe_resource_reference(&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->desc.microtile || tex->desc.macrotile[level] || ((referenced_hw & !(usage & PIPE_TRANSFER_READ)) && blittable)) { 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_DYNAMIC; base.bind = 0; 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_texture( 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. */ ctx->flush(ctx, 0, NULL); trans->linear_texture = r300_texture( ctx->screen->resource_create(ctx->screen, &base)); if (!trans->linear_texture) { /* For linear textures, it's safe to fallback to * an unpipelined transfer. */ if (!tex->desc.microtile && !tex->desc.macrotile[level]) { goto unpipelined; } /* Otherwise, go to hell. */ fprintf(stderr, "r300: Failed to create a transfer object, praise.\n"); FREE(trans); return NULL; } } assert(!trans->linear_texture->desc.microtile && !trans->linear_texture->desc.macrotile[0]); /* Set the stride. * * Even though we are using an internal texture for this, * the transfer level, box and usage parameters still reflect * the arguments received to get_transfer. We just do the * right thing internally. */ trans->transfer.stride = trans->linear_texture->desc.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. */ ctx->flush(ctx, 0, NULL); } return &trans->transfer; } unpipelined: /* Unpipelined transfer. */ trans->transfer.stride = tex->desc.stride_in_bytes[level]; trans->offset = r300_texture_get_offset(&tex->desc, level, box->z); if (referenced_cs) ctx->flush(ctx, PIPE_FLUSH_RENDER_CACHE, NULL); return &trans->transfer; } return NULL; } void r300_texture_transfer_destroy(struct pipe_context *ctx, struct pipe_transfer *trans) { struct r300_transfer *r300transfer = r300_transfer(trans); if (r300transfer->linear_texture) { if (trans->usage & PIPE_TRANSFER_WRITE) { r300_copy_into_tiled_texture(ctx, r300transfer); } pipe_resource_reference( (struct pipe_resource**)&r300transfer->linear_texture, NULL); } pipe_resource_reference(&trans->resource, NULL); FREE(trans); } void* r300_texture_transfer_map(struct pipe_context *ctx, struct pipe_transfer *transfer) { struct r300_context *r300 = r300_context(ctx); struct r300_winsys_screen *rws = (struct r300_winsys_screen *)ctx->winsys; struct r300_transfer *r300transfer = r300_transfer(transfer); struct r300_texture *tex = r300_texture(transfer->resource); char *map; enum pipe_format format = tex->desc.b.b.format; if (r300transfer->linear_texture) { /* The detiled texture is of the same size as the region being mapped * (no offset needed). */ return rws->buffer_map(rws, r300transfer->linear_texture->buffer, r300->cs, transfer->usage); } else { /* Tiling is disabled. */ map = rws->buffer_map(rws, tex->buffer, r300->cs, transfer->usage); if (!map) { return NULL; } return map + r300_transfer(transfer)->offset + transfer->box.y / util_format_get_blockheight(format) * transfer->stride + transfer->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 r300_winsys_screen *rws = (struct r300_winsys_screen *)ctx->winsys; struct r300_transfer *r300transfer = r300_transfer(transfer); struct r300_texture *tex = r300_texture(transfer->resource); if (r300transfer->linear_texture) { rws->buffer_unmap(rws, r300transfer->linear_texture->buffer); } else { rws->buffer_unmap(rws, tex->buffer); } }