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Intel SNA vs. UXA On Ivy Bridge (July 2012)

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  • #21
    Originally posted by ickle View Post
    That turns out to be a bug in cairo...
    Thanks for that. I recompiled 1.12.2 with the fix, then switched back to SNA. Now I got something different from both previous ones



    Looks sharp though, so I'll stick with it.

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    • #22
      Originally posted by Gusar View Post
      Thanks for that. I recompiled 1.12.2 with the fix, then switched back to SNA. Now I got something different from both previous ones



      Looks sharp though, so I'll stick with it.
      Cairo asks for Imprecise rendering by default, so the driver is allowed to take a few shortcuts and avoid the overhead of enforcing an 15x17 sampling grid for trapezoidal rasterisation, but still has to obey various rules to ensure that rendering a set of trapezoids is still deterministic. Hopefully I have chosen a good compromise between speed and quality, it should still be higher quality than using skia for example ;-)

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