[Mesa-dev] [PATCH] r600g: adjust QUANT_MODE for higher precision

Andy Furniss andyqos at ukfsn.org
Sat Sep 1 15:26:26 PDT 2012


Vadim Girlin wrote:
> Use 1/256 for R6xx/7xx, 1/4096 for evergreen, instead of default 1/16.
>
> Helps to pass some piglit tests (fbo, multisample).

It also fixes the worse inaccuracies seen when using vdpau mpeg2 decode 
on my rv790. It's still not as accurate as s/w, but the remaining errors 
maybe a separate (chroma) issue.



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