and i dont think gpu rendering is much faster. i am playing aroung with octane render, its great and fast for what is does, but 1080p noisefree renders also take 8-20 hours on my gtx580 for more complex lighting situations.
Just playing with Blender where you can easily switch between CPU and GPU and GPU is drastically faster for previewing. You're right it takes time to get rid of the noise which reduces it's usefulness for final renders but wow, is it nice when you're setting up a scene which to me is most useful. I don't care if it takes all night after that but just not while I'm sitting there!
wetas pantaray solution is complete different. weta renders all the arealights with pantaray, bake it and using this as lookup in renderman. so they using 2 renderer, with renderman a custom solution with all their stuff. i think that only works in a bigger pipeline.
True. But couldn't that concept be implemented in one render engine (MR)? Weta just happens to use Renderman but Nvidia helped develop PantaRay so they have the code and they own MR so...put the two together?