On 10/31/20 8:23 AM, William F Pokorny wrote:
...
> 
> Thinking some of increasing the max allowed depth for AA method 1 to 
> perhaps 20. Also of trying again my isosurface cloud renders with jitter 
> values >>1.0....
> 

I've updated povr's AA and jitter code to support method 1 +r depths of 
whatever size. Left the other two methods alone.

Also made some updates to avoid extra work where the threshold is 
essentially zero or the aagamma (+ag) is 1.0. This lets one bypass the 
gamma curve corrections and use just threshold for control. One can get
substantial render savings. One can also get longer renders. Amounts to
more control and an ability to get time savings when the curve 
corrections and threshold tests are just useless computations toward an 
end result.

One other thing I've learned is the big jitter makes the method 1 
testing left and up only bias more obvious. For symmetry in AA results 
methods 2 and 3 are the way to go.

Lastly, attaching another example showing an odd effect one can get with 
very big jitter settings and largish threshold settings. Basically the 
big jitter only kicks in near where AA does. Not sure if the result 
would ever be that useful, but FWIW.

Bill P.

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