[Mesa-dev] [PATCH] i965/fs: Implement fs_inst::force_sechalf support on Broadwell.

[Eric Anholt]

Kenneth Graunke <kenneth at whitecape.org> writes:

> Back when I originally wrote this code, force_sechalf was only used for
> Gen4 code, so I didn't bother hooking it up.  However, it's used more
> generally these days.  In particular, we use it for computing
> gl_SamplePosition.
>
> Fixes Piglit's spec/ARB_sample_shading/builtin-gl-sample-position tests.

Reviewed-by: Eric Anholt <eric at anholt.net>
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