diff options
Diffstat (limited to 'src/gallium/drivers/r300/r300_transfer.c')
| -rw-r--r-- | src/gallium/drivers/r300/r300_transfer.c | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/r300_transfer.c b/src/gallium/drivers/r300/r300_transfer.c new file mode 100644 index 00000000000..ec89681a3c0 --- /dev/null +++ b/src/gallium/drivers/r300/r300_transfer.c @@ -0,0 +1,270 @@ +/* + * Copyright 2008 Corbin Simpson <[email protected]> + * Copyright 2010 Marek Olšák <[email protected]> + * + * 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_context.h" +#include "r300_transfer.h" +#include "r300_texture.h" +#include "r300_screen.h" + +#include "util/u_memory.h" +#include "util/u_format.h" + +struct r300_transfer { + /* Parent class */ + struct pipe_transfer transfer; + + /* Pipe context. */ + struct pipe_context *ctx; + + /* Parameters of get_tex_transfer. */ + unsigned x, y, level, zslice, face; + + /* Offset from start of buffer. */ + unsigned offset; + + /* Detiled texture. */ + struct r300_texture *detiled_texture; + + /* Transfer and format flags. */ + unsigned buffer_usage, render_target_usage; +}; + +/* 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_screen *screen = ctx->screen; + struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer; + struct pipe_texture *tex = transfer->texture; + struct pipe_surface *src, *dst; + + src = screen->get_tex_surface(screen, tex, r300transfer->face, + r300transfer->level, r300transfer->zslice, + PIPE_BUFFER_USAGE_GPU_READ | + PIPE_BUFFER_USAGE_PIXEL); + + dst = screen->get_tex_surface(screen, &r300transfer->detiled_texture->tex, + 0, 0, 0, + PIPE_BUFFER_USAGE_GPU_WRITE | + PIPE_BUFFER_USAGE_PIXEL | + r300transfer->buffer_usage); + + ctx->surface_copy(ctx, dst, 0, 0, src, r300transfer->x, r300transfer->y, + transfer->width, transfer->height); + + pipe_surface_reference(&src, NULL); + pipe_surface_reference(&dst, NULL); +} + +/* 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_screen *screen = ctx->screen; + struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer; + struct pipe_texture *tex = transfer->texture; + struct pipe_surface *src, *dst; + + src = screen->get_tex_surface(screen, &r300transfer->detiled_texture->tex, + 0, 0, 0, + PIPE_BUFFER_USAGE_GPU_READ | + PIPE_BUFFER_USAGE_PIXEL); + + dst = screen->get_tex_surface(screen, tex, r300transfer->face, + r300transfer->level, r300transfer->zslice, + PIPE_BUFFER_USAGE_GPU_WRITE | + PIPE_BUFFER_USAGE_PIXEL); + + /* XXX this flush prevents the following DRM error from occuring: + * [drm:radeon_cs_ioctl] *ERROR* Failed to parse relocation ! + * Reproducible with perf/copytex. */ + ctx->flush(ctx, 0, NULL); + + ctx->surface_copy(ctx, dst, r300transfer->x, r300transfer->y, src, 0, 0, + transfer->width, transfer->height); + + /* XXX this flush fixes a few piglit tests (e.g. glean/pixelFormats). */ + ctx->flush(ctx, 0, NULL); + + pipe_surface_reference(&src, NULL); + pipe_surface_reference(&dst, NULL); +} + +static struct pipe_transfer* +r300_get_tex_transfer(struct pipe_screen *screen, + struct pipe_texture *texture, + unsigned face, unsigned level, unsigned zslice, + enum pipe_transfer_usage usage, unsigned x, unsigned y, + unsigned w, unsigned h) +{ + struct r300_texture *tex = (struct r300_texture *)texture; + struct r300_transfer *trans; + struct r300_screen *r300screen = r300_screen(screen); + struct pipe_texture template; + + trans = CALLOC_STRUCT(r300_transfer); + if (trans) { + /* Initialize the transfer object. */ + pipe_texture_reference(&trans->transfer.texture, texture); + trans->transfer.usage = usage; + trans->transfer.width = w; + trans->transfer.height = h; + trans->ctx = r300screen->ctx; + trans->x = x; + trans->y = y; + trans->level = level; + trans->zslice = zslice; + trans->face = face; + + /* If the texture is tiled, we must create a temporary detiled texture + * for this transfer. */ + if (tex->microtile || tex->macrotile) { + trans->buffer_usage = pipe_transfer_buffer_flags(&trans->transfer); + trans->render_target_usage = + util_format_is_depth_or_stencil(texture->format) ? + PIPE_TEXTURE_USAGE_DEPTH_STENCIL : + PIPE_TEXTURE_USAGE_RENDER_TARGET; + + template.target = PIPE_TEXTURE_2D; + template.format = texture->format; + template.width0 = w; + template.height0 = h; + template.depth0 = 0; + template.last_level = 0; + template.nr_samples = 0; + template.tex_usage = PIPE_TEXTURE_USAGE_DYNAMIC | + R300_TEXTURE_USAGE_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) { + template.tex_usage |= trans->render_target_usage; + } + /* For texture writing, the temporary texture is used as a sampler + * when blitting into a tiled texture. */ + if (usage & PIPE_TRANSFER_WRITE) { + template.tex_usage |= PIPE_TEXTURE_USAGE_SAMPLER; + } + + /* Create the temporary texture. */ + trans->detiled_texture = + (struct r300_texture*)screen->texture_create(screen, &template); + assert(!trans->detiled_texture->microtile && + !trans->detiled_texture->macrotile); + + /* Set the stride. + * Parameters x, y, level, zslice, and face remain zero. */ + trans->transfer.stride = + r300_texture_get_stride(r300screen, trans->detiled_texture, 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(r300screen->ctx, trans); + } + } else { + trans->transfer.x = x; + trans->transfer.y = y; + trans->transfer.stride = + r300_texture_get_stride(r300screen, tex, level); + trans->transfer.level = level; + trans->transfer.zslice = zslice; + trans->transfer.face = face; + trans->offset = r300_texture_get_offset(tex, level, zslice, face); + } + } + return &trans->transfer; +} + +static void r300_tex_transfer_destroy(struct pipe_transfer *trans) +{ + struct r300_transfer *r300transfer = r300_transfer(trans); + + if (r300transfer->detiled_texture) { + if (trans->usage & PIPE_TRANSFER_WRITE) { + r300_copy_into_tiled_texture(r300transfer->ctx, r300transfer); + } + + pipe_texture_reference( + (struct pipe_texture**)&r300transfer->detiled_texture, NULL); + } + pipe_texture_reference(&trans->texture, NULL); + FREE(trans); +} + +static void* r300_transfer_map(struct pipe_screen *screen, + struct pipe_transfer *transfer) +{ + struct r300_transfer *r300transfer = r300_transfer(transfer); + struct r300_texture *tex = (struct r300_texture*)transfer->texture; + char *map; + enum pipe_format format = tex->tex.format; + + if (r300transfer->detiled_texture) { + /* The detiled texture is of the same size as the region being mapped + * (no offset needed). */ + return pipe_buffer_map(screen, + r300transfer->detiled_texture->buffer, + pipe_transfer_buffer_flags(transfer)); + } else { + /* Tiling is disabled. */ + map = pipe_buffer_map(screen, tex->buffer, + pipe_transfer_buffer_flags(transfer)); + + if (!map) { + return NULL; + } + + return map + r300_transfer(transfer)->offset + + transfer->y / util_format_get_blockheight(format) * transfer->stride + + transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format); + } +} + +static void r300_transfer_unmap(struct pipe_screen *screen, + struct pipe_transfer *transfer) +{ + struct r300_transfer *r300transfer = r300_transfer(transfer); + struct r300_texture *tex = (struct r300_texture*)transfer->texture; + + if (r300transfer->detiled_texture) { + pipe_buffer_unmap(screen, r300transfer->detiled_texture->buffer); + } else { + pipe_buffer_unmap(screen, tex->buffer); + } +} + +void r300_init_screen_transfer_functions(struct pipe_screen *screen) +{ + screen->get_tex_transfer = r300_get_tex_transfer; + screen->tex_transfer_destroy = r300_tex_transfer_destroy; + screen->transfer_map = r300_transfer_map; + screen->transfer_unmap = r300_transfer_unmap; +} |