chtimy

Hello, Could you explain in the code how works the method `EvaluateShadowPoisson` in [shadows.hlsli](https://github.com/NVIDIAGameWorks/donut/blob/ab17dddcb6ae7d3661f769736cf8809abf0b899a/include/donut/shaders/shadows.hlsli#L4) or provide the source of the algorithm ? For example - I do not understand how...