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Reducing shadow aliasing

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One of the biggest problems in the game I'm talking of is shadow aliasing.


I tried enabling jittering in the shader but it still doesn't mask the problem enough.


I recently came across this great GPU gems article that sounds like it would solve the problem:




Specifically, the "brute-force method".


Here is the shadows shader for the game:



The problem is I don't really understand HLSL that well yet so I was hoping someone would be willing to take the time to walk me through it.


I have access to the engine code in addition to that shader so if there is any information pertaining to shadowing that you need to know about the engine then let me know and I'll post it.


Thank you for your time.

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