find and render most complex part of image to ascertain necessary pass limit.

[3di]

I'd like a button which analyses the image and finds the most complex part of the image, then renders a small portion of that area in order to quickly ascertain the pass limit required to achieve the desired noise limit.

The resulting suggested pass limit could then be used when rendering the whole image on a render farm (as currently the noise limit option seems to be incompatible with DR, i'm guessing due to each section of an image which is being handled by various nodes having different amounts of noise, resulting in unequal passes/banding).

Cheers

Michael.

[Ondra]

This wouldnt really work, because different parts of the image renders internally with different samples count, which means different speed. Noise limit should work well with DR