Changeset 2995 for GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders

Timestamp:

10/03/08 02:46:30 (16 years ago)

Author:

mattausch

Message:

 

File:

• GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders/ssao.cg (modified) (5 diffs)

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

@@ -149 +149 @@
                    uniform float3 br,
                    uniform float3 tl,
-                   uniform float3 tr
+                   uniform float3 tr,
+                   const uniform float4x4 oldModelView
                    )
 {
@@ -197 +198 @@
         float4 oldPos = mul(oldModelViewProj, realPos);
 
+        // the depth projected into the old frame
         const float newDepth = oldPos.z / oldPos.w;
 
+        // fit from unit cube into 0 .. 1
         float2 tex = (oldPos.xy / oldPos.w) * 0.5f + 0.5f;
+
+        // optain the sample frpm last frame
         float4 oldCol = tex2D(oldTex, tex);
 
@@ -212 +217 @@
         // the number of valid samples in this frame
         const float newNumSamples = ao.y;
+
 
         if (//(temporalCoherence > 0) &&
@@ -219 +225 @@
                 // if visibility changed in the surrounding area we have to recompute
                 && (oldNumSamples > 0.8f * newNumSamples)
-                //&& (oldAvgDepth / newAvgDepth > 0.99)
                 )
         {
@@ -225 +230 @@
                 newWeight = oldWeight + 1.0f;
                 OUT.illum_col.xy = (ao.xy + oldCol.xy * oldWeight) / newWeight;
-
                 //if (!(oldNumSamples > ao.y - 1.5f)) newWeight = 0;
         }