i965: Enable EWA anisotropic filtering algorithm
authorIan Romanick <ian.d.romanick@intel.com>
Tue, 4 Mar 2014 09:08:05 +0000 (11:08 +0200)
committerKenneth Graunke <kenneth@whitecape.org>
Tue, 18 Mar 2014 17:56:38 +0000 (10:56 -0700)
commitf74cf5f80ea6ea16abb38c28c2b4826b8559017b
treea452b153e43e739c65c14286fb12ddda17d41b82
parentdd2e5d3999e456c33dbc9a710e211a7bdbe3330f
i965: Enable EWA anisotropic filtering algorithm

Volume 4, part 1 of the Ivybridge PRM says, "Generally, the EWA
approximation algorithm results in higher image quality than the legacy
algorithm."  Using a classic anisotropic filtering "tunnel" demo, it
appears that there is *no* anisotropic filtering on IVB without this bit
set.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
src/mesa/drivers/dri/i965/gen7_sampler_state.c