UE 4.25: Lightning propagation and Shadow Algorithm

Development Rendering
1

Hi,

Is there any documentation or paper regarding Unreal Engine light propagation and shadow works? (It is not how to use it)
I need to know how it works as a part of my thesis

3

Hi, @Bits360 I’ve another question related to the lightning calculation.
Do you know how UE4 calculates the global illumination?
From Wikipedia page (Unreal Engine - Wikipedia), it said that UE uses a similar method with SVOGI ( Sparse Voxel Octree Global Illumination).
But, I don’t find any articles or documentation that explain what method they exactly use or how they calculate the global illumination.