Improving bias on slopes.

2014-12-04 13:26:06 +01:00 · 2014-12-04 13:26:06 +01:00 · a8ac3c064a
commit a8ac3c064a
parent 3b0881f9c1
1 changed files with 2 additions and 1 deletions
--- a/Shader/phong.fsh
+++ b/Shader/phong.fsh
@ -59,7 +59,8 @@ void main()
    }

    // shadows 
-    float bias = 0.001;
+    float bias = 0.001*tan(acos(clamp(dot(vNormal, -directionalLightVector), 0.0, 1.0)));
+    bias = clamp(bias, 0.0, 0.01);
    vec3 biasedShadowCoord = vec3(shadowCoord);
    biasedShadowCoord.z = shadowCoord.z - bias;
    float visibility = 1.0;