Changeset 2498 for GTP/trunk/App/Demos/Illum/pathmap/computeWeights.fx

Timestamp:

07/03/07 11:03:46 (17 years ago)

Author:

szirmay

Message:

 

File:

• GTP/trunk/App/Demos/Illum/pathmap/computeWeights.fx (modified) (3 diffs)

GTP/trunk/App/Demos/Illum/pathmap/computeWeights.fx

@@ -31 +31 @@
     vsOutputComputeWeights output = (vsOutputComputeWeights)0;
     output.pos = input.pos;
-    output.tex = input.tex;
+    
+    output.tex = (input.pos + 1.0) / 2.0;
+    output.tex.y = 1.0 - output.tex.y;
+    
+    //output.tex = input.tex;
     return output;
 }
@@ -44 +48 @@
         float3 pos = tex2D(radionSampler, float2((werx + 0.25) * dataColumnWidth, (wery  + 0.5) / 4096.0) ).xyz;
         float3 dir = tex2D(radionSampler, float2((werx + 0.75) * dataColumnWidth, (wery  + 0.5) / 4096.0) ).xyz;
-        
+        /*
         float3 diff = lightPos - pos;
         float dist2 = dot(diff, diff);
@@ -71 +75 @@
 //      if(ret > WEIGHTCUTOFF)
 //              ret = WEIGHTCUTOFF;
+        */
+        
+        
+        float3 diff = lightPos - pos;
+        float dist2 = dot(diff, diff);
+        if(dist2 < SAMPLECUTDIST2)
+                dist2 = SAMPLECUTDIST2;
+        diff = normalize(diff);
+        float cosa = max(dot(lightDir, -diff), 0);
+        float cosb = max(dot(dir, diff), 0);
+        float ret = pow(cosa, 9) * cosb / dist2;
+        return ret;
         
         return float4(ret, ret, ret, ret);