[Mesa-dev] [PATCH] i965: Disable unlit-centroid workaround on Gen < 6.

[Matt Turner]

On Mon, Dec 8, 2014 at 11:08 PM, Matt Turner <mattst88 at gmail.com> wrote:
> Back to the original commit (8313f444) adding the workaround, we were
> enabling it on gens <= 7, even though gens <= 5 can't do multisampling.

By the way, on Ironlake:

total instructions in shared programs: 4358478 -> 4349671 (-0.20%)
instructions in affected programs:     117680 -> 108873 (-7.48%)

A bunch of shaders in TF2, Portal 2, and L4D2 are cut by 25~30%.