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authorEric Anholt <eric@anholt.net>2013-12-24 15:11:54 -0800
committerCarl Worth <cworth@cworth.org>2014-01-09 12:24:44 -0800
commit3a6271890cd40c1e37870802f9f3231b3170d27f (patch)
tree57555cc10412d94a8e2b0d1260880e79c2454a8a /configure.ac
parent9b3ed4c8c2e985506628ff9e6be2431b4b01393f (diff)
i965: Don't do the temporary-and-blit-copy for INVALIDATE_RANGE maps.
We definitely want to fall through to the unsynchronized map case, instead of wasting bandwidth on a copy. Prevents a -43.2407% +/- 1.06113% (n=49) performance regression on aa10perf when teaching glamor to provide the GL_INVALIDATE_RANGE_BIT information. This is a performance fix, which I usually wouldn't cherry-pick to stable. But this was really was just a bug in the code, its presence would discourage developers from giving us the best information they can, and I think we've got fairly high confidence in the unsynchronized map path already. Cc: 10.0 9.2 <mesa-stable@lists.freedesktop.org> Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> (cherry picked from commit f46563fe1c8a5560e4de0adf03e3d8770b7fc734)
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