[Mesa-dev] i965 fast depth clears

[Ian Romanick]

On 05/22/2012 10:21 AM, Eric Anholt wrote:
> I finally got around to fixing my fast depth clear hack, and it turns
> out it's a good payoff.  Here's the summary:
>
>      Improves citybench high-res performance 3.0% +- 0.4%, n=10.
>      Improves Lightsmark 1024x768 performance 0.74% +/- 0.20% (n=78).
>      No significant difference on openarena (n=5, didn't fast clear) or
>      nexuiz (n=3).
>
> Check out the comment in brw_clear.c at the end for an interesting
> explanation of how fast clears are implemented in hardware.  It sure
> would have saved me time if they had explained that in the spec
> instead of the restrictions that that leads to.

Other than the couple trivial comments, the series is

Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>