In this post I'm going to discuss basics of shadow mapping and two popular methods of filtering shadow maps PCF (Percentage Closer Filtering) and VSM (Variance Shadow Maps). (All of the used shadow maps are 4096*4096)

What is shadow mapping

Shadow mapping, introduced by Lance Williams in 1978, i…

Hey guys.

I'll be posting my experience, methods, and all other stuff that I'll come across rewriting my engine, I started writing this engine about a year ago, Well performance was my real problem esp. when I added GI and volumetric lighting so I decided to rewrite the whole engine.

So far I've writ…