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gallium/radeon: use staging for texture read mappings from GTT WC

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Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This commit is contained in:
Marek Olšák 2017-02-09 12:19:21 +01:00
parent dc7483f445
commit 43a2ba1b7d
1 changed files with 5 additions and 4 deletions
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9
src/gallium/drivers/radeon/r600_texture.c
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@ -1456,8 +1456,8 @@ static void *r600_texture_transfer_map(struct pipe_context *ctx,
/* Tiled textures need to be converted into a linear texture for CPU
* access. The staging texture is always linear and is placed in GART.
*
* Reading from VRAM is slow, always use the staging texture in
* this case.
* Reading from VRAM or GTT WC is slow, always use the staging
* texture in this case.
*
* Use the staging texture for uploads if the underlying BO
* is busy.
@ -1465,8 +1465,9 @@ static void *r600_texture_transfer_map(struct pipe_context *ctx,
if (!rtex->surface.is_linear)
use_staging_texture = true;
else if (usage & PIPE_TRANSFER_READ)
use_staging_texture = (rtex->resource.domains &
RADEON_DOMAIN_VRAM) != 0;
use_staging_texture =
rtex->resource.domains & RADEON_DOMAIN_VRAM ||
rtex->resource.flags & RADEON_FLAG_GTT_WC;
/* Write & linear only: */
else if (r600_rings_is_buffer_referenced(rctx, rtex->resource.buf,
RADEON_USAGE_READWRITE) ||