[Mesa-dev] [PATCH 4/4] i965/fs: Disable unlit_centroid_workaround on Haswell.

[Matt Turner]

On Mon, Jun 30, 2014 at 12:31 AM, Kenneth Graunke <kenneth at whitecape.org> wrote:
> On Sunday, June 29, 2014 11:18:17 PM Matt Turner wrote:
>
>> Although the HSW PRM shows it, the BSpec lists this workaround as being
>
>> for Ivybridge only.
>
>>
>
>> total instructions in shared programs: 1994951 -> 1993675 (-0.06%)
>
>> instructions in affected programs: 27325 -> 26049 (-4.67%)
>
>> ---
>
>> src/mesa/drivers/dri/i965/brw_device_info.c | 6 ++++--
>
>> 1 file changed, 4 insertions(+), 2 deletions(-)
>
>
>
> Were you able to observe something breaking on Ivybridge with the workaround
> dropped (proving that we can observe that the workaround is necessary)?

As I said in the cover letter, no. The tests mentioned by Paul still
pass with the workaround disabled on Ivy Bridge.