Shadow Mapping - Self-Shadowing Z-Fighting Artifacts
Post: #16
Got sidetracked by normal mapping and lighting bugs...
I managed to get the artifacts down to a reasonable level. I was overthinking the artifacts on the back side of models. Those of course shouldn't ever be seen since the diffuse will be dark/black for those polygons anyway. I tried arekkusu's Shader Builder test, and it turns out the X1900 doesn't do hardware PCF (or I don't have it setup right). So I added the PCF sampling into the shader and that got rid of 99% of the artifacts that were still bugging me. I'm just not bothering with glPolygonOffset for now. I just can't find good numbers that don't cause more problems than they solve.
I managed to get the artifacts down to a reasonable level. I was overthinking the artifacts on the back side of models. Those of course shouldn't ever be seen since the diffuse will be dark/black for those polygons anyway. I tried arekkusu's Shader Builder test, and it turns out the X1900 doesn't do hardware PCF (or I don't have it setup right). So I added the PCF sampling into the shader and that got rid of 99% of the artifacts that were still bugging me. I'm just not bothering with glPolygonOffset for now. I just can't find good numbers that don't cause more problems than they solve.
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