Dynamic shadows artifacts

[anonymous_user_fbe2d247]

Aye, definitely large improvement. Makes me want to take a look at loops in other shaders and re-check them.

On a side, unrelated note, why coarse derivatives are used? Maybe it is worth looking into fine ones, when available? Should give better biasing.

I have to check is there any visible different with ddx_fine. Is there performance difference and how much?