[cairo] Tessellator performance patch
Keith Packard
keithp at keithp.com
Sun Dec 3 21:54:19 PST 2006
On Mon, 2006-12-04 at 06:13 +0200, M Joonas Pihlaja wrote:
> These multiplications are liable to overflow 32 bits and throw
> off the later sign checks. Could you replace them with a 64 bit
> version and rerun your tests?
Given the cost of 64-bit arithmetic, might it also be interesting to try
some 'reduced precision' version of this code by shifting the
coordinates by 16 bits (with suitable rounding, of course)
--
keith.packard at intel.com
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