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authorMarek Olšák <[email protected]>2010-12-29 03:17:43 +0100
committerMarek Olšák <[email protected]>2011-01-06 16:16:29 +0100
commit58c5e782e351621bde2693fa945d0c90d140b855 (patch)
treed8a77d03790420d9e89325d74ff2e0dbb57a854c /src/gallium/drivers/cell
parent5adcd9c9117b125cab1155c5f3af0bb51ace74b7 (diff)
st/mesa: optimize constant buffer uploads
The overhead of resource_create, transfer_inline_write, and resource_destroy to upload constant data is very visible with some apps in sysprof, and as such should be eliminated. My approach uses a user buffer to pass a pointer to a driver. This gives the driver the freedom it needs to take the fast path, which may differ for each driver. This commit addresses the same issue as Jakob's one that suballocates out of a big constant buffer, but it also eliminates the copy to the buffer.
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