Changeset 2979 for GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders

Timestamp:

09/28/08 23:36:50 (16 years ago)

Author:

mattausch

Message:

 

File:

• GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders/ssao.cg (modified) (2 diffs)

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders/ssao.cg

@@ -52 +52 @@
         float numSamples = 0;
 
-        // avoid singularity of 
-        centerPosition.xyz += currentNormal * 1e-4f;
-
         for (int i = 0; i < NUM_SAMPLES; ++ i) 
         {
@@ -85 +82 @@
                 const float cos_angle = max(dot(direction_to_sample, currentNormal), 0.0f);
 
+                // the distance_scale offset is used to avoid singularity that occurs at global illumination when 
+                // the distance to a sample approaches zero
                 const float distance_intensity = 
                         (SAMPLE_INTENSITY * DISTANCE_SCALE) / (DISTANCE_SCALE + length_to_sample * length_to_sample);