Changeset 2811 for GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders/deferred.cg

Timestamp:

07/03/08 17:52:45 (16 years ago)

Author:

mattausch

Message:

 

File:

• GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders/deferred.cg (modified) (8 diffs)

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

@@ -57 +57 @@
 
   // the normal on the current position
-  float3 centerNormal = tex2D(normals, IN.texCoord.xy).xyz * 2.0f - 1.0f;
-
+  float3 centerNormal = tex2D(normals, IN.texCoord.xy).xyz;
+  normalize(centerNormal);
+  
   // Check in a circular area around the current position.
   // Shoot vectors to the positions there, and check the angle to these positions.
@@ -66 +67 @@
 
   //const float areaSize = 4.0f;  
-  const float areaSize = 5e-3f;
-  const float sampleIntensity = 0.1;
+  const float areaSize = 4e-3f;
+  const float sampleIntensity = 0.1f;
   
   for (int i = 0; i < SAMPLES; i ++) {
@@ -75 +76 @@
     float3 noise = tex2D(noiseTexture, IN.texCoord.xy).xyz * 2.0f - 1.0f;
 
+    //    float2 offsetTransformed = offset;
     float2 offsetTransformed;
     offsetTransformed.x = noise.r*offset.x - noise.g*offset.y;
@@ -84 +86 @@
     
     float3 vector_to_sample = sample_position - centerPosition;
+    // vector_to_sample.z = -vector_to_sample.z;
     float length_to_sample = length(vector_to_sample);
-    float3 direction_to_sample = vector_to_sample / length_to_sample;
+    float3 direction_to_sample = vector_to_sample / (length_to_sample + 1e-9f);
     
     // Angle between current normal and direction to sample controls AO intensity.
@@ -92 +95 @@
     
     // distance between current position and sample position controls AO intensity.
-    const float scale = 5e-1f;
+    const float maxdist = 5e-1f;
+    //const float scale = 50.0f;
 
-    float distance_intensity = scale * (1.0f - length_to_sample);
+    float distance_intensity = maxdist - length_to_sample;
     distance_intensity = max(distance_intensity, 0.0f);
     
@@ -112 +116 @@
 {
   pixel OUT;
-  float4 lightDir = float4(1.0f, 1.0f, 1.0f, 0.0f);
+  //float4 lightDir = float4(1.0f, 1.0f, 1.0f, 0.0f);
+float4 lightDir = float4(0.0f, 1.0f, 0.0f, 0.0f);
   
   float4 color = tex2D(colors, IN.texCoord.xy);
@@ -121 +126 @@
   float4 position = tex2D(positions, IN.texCoord.xy);
 
-  float4 ambient = float4(0.3f);
+  float4 ambient = float4(0.1f);
 
   // float3 L = normalize(lightPosition - position);
@@ -132 +137 @@
   OUT.color = ao; //(ambient + diffuse) * color;
   //OUT.color = (ambient + diffuse) * color;
+  
   //float4 currentPos = tex2D(positions, IN.texCoord.xy);
+  //OUT.color = currentPos;
+  //float4 currentPos = tex2D(normals, IN.texCoord.xy) * 0.5f + 0.5f;
   //OUT.color = currentPos;