Shadow Map errors

Discussion created by sechrest on Mar 18, 2010
Latest reply on Sep 13, 2011 by mi076
There are holes in my depth shadows that do not appear on graphics cards from other vendors

I've got a Windows/OpenGL app that uses depth textures to implement shadow maps.  All is well on other graphcis cards but on ATI cards I get holes in the shadow maps at resolutions greater than 128 x 128.

It seems to be worse on 64 bit systems but I can't say that reliably.  All ATI cards tested have the behavior to some extent.  I've tried several driver versions and am currently running driver version 8.712.3.0 (it came with Catalyst 10.3).

Anyone else seeing something similar?