Dynamic shadows artifacts

[anonymous_user_c94f194d]

The calling code adds offsets to FetchRowOfFour call, so it does not use only positive offsets.
For 4x4 filter, the sample center is offset is offset by (-1,-1). It matches gather code.
for 7x7 filter, the sample center is offset by (-3,-3), It is half a texel off the gather code.

I don’t see more than half a texel shift anywhere.

Yeah you are right. I tested code a bit and noticed that original and my offset version(-1, 0, 1) was both half texel offsetted. Proper fix was to remove - 0.5f bias and use my offsets.

float2 TexelPos = ShadowPosition * Settings.ShadowBufferSize.xy - 0.5f; // bias to be consistent with texture filtering hardware