fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2025-12-24 17:30:12 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

i965: Enable EWA anisotropic filtering algorithm

Browse source 
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>
This commit is contained in:
Ian Romanick 2014-03-04 11:08:05 +02:00 • committed by Kenneth Graunke
parent dd2e5d3999
commit f74cf5f80e
1 changed files with 1 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
src/mesa/drivers/dri/i965/gen7_sampler_state.c
View file

@ -82,6 +82,7 @@ gen7_update_sampler_state(struct brw_context *brw, int unit, int ss_index,
if (gl_sampler->MaxAnisotropy > 1.0) {
sampler->ss0.min_filter = BRW_MAPFILTER_ANISOTROPIC;
sampler->ss0.mag_filter = BRW_MAPFILTER_ANISOTROPIC;
sampler->ss0.aniso_algorithm = 1;
if (gl_sampler->MaxAnisotropy > 2.0) {
sampler->ss3.max_aniso = MIN2((gl_sampler->MaxAnisotropy - 2) / 2,