How do the calculations go so smoothly? I mean for each pixel that is potentially in the shade there can be a many 'upstream' pixels in the direction that the light is coming from that could cause it to be shady if there was something high there. Doing that calculation for each pixel seems very intensive, or is it achieved in some other way?
How do the calculations go so smoothly? I mean for each pixel that is potentially in the shade there can be a many 'upstream' pixels in the direction that the light is coming from that could cause it to be shady if there was something high there. Doing that calculation for each pixel seems very intensive, or is it achieved in some other way?