Noise treshhold

[Eugen Fetsch]

The CPU delivers higher quality per sample, so it is not quite the same as one GPU sample. One way to assess the speed of the GPU vs. the CPU is to render an offline image with 100 samples on the CPU and then render the same image on the GPU with 100 samples - and possibly increasing the number of samples to get the same quality. With the setup and performance you are seeing you should expect the GPUs to be quite a bit faster. I recommend using 9.1 (beta) which has significant improvements to the GPU sampling (higher quality per sample).

Hi KeyShot  ,

would it be possible to implement something like a noise treshhold to control the noise amount in the image? A math based decision for final quality would bypass the subjective guessing if the renders are equal.

Rendering different cameras (wide shots / close ups / inside shots) in a more complex scene with camera switch events (in one run) can lead to different noise results. With an option like this the engine would render the frame till it has the desired noise amount. 

Thanks

[Sven]

That would great. Having the Noise Level information in the "H" Heads-up Display would be a good start