Xplo Eristotle wrote:

> TinCanMan wrote:
> 
>>> huge improvement; every rendering pass after the first one would be
>>> twice as fast!
>>
>>
>> I think this should only be 33% as fast if I understand it.  For each new
>> pass you would calculate 3 new pixels + reuse one old one for every 
>> square
>> of 4 pixels.   4/3=1.33
> 
> 
> Oh, you're right. Bad math on my part. D'oh.
> 
> Still, 33% is a pretty significant boost.


You do not have to use mosaic preview, at least not until 1x1 pixels.
That's a better boost.

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