Changeset 2884 for GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders/antialiasing.cg

Timestamp:

08/29/08 15:46:36 (16 years ago)

Author:

mattausch

Message:

found bug with lod levels
made env file for shaders

File:

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

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

@@ -11 +11 @@
 
 // the barrier for detecting a discontinuity
-uniform float4 e_barrier = float4(5e-4, 5e-4, 0, 0); // x = normal, y = depth
+uniform float4 e_barrier = float4(5e-5, 5e-5, 0, 0); // x = normal, y = depth
 // the weights for normal / depth discontinuity
+//uniform float4 e_weights = float4(10.0f, 0.1f, 1.0f, 1.0f); // x = normal, y = depth
 uniform float4 e_weights = float4(1.0f, 1.0f, 1.0f, 1.0f); // x = normal, y = depth
 uniform float4 e_kernel = float4(0.35f, 1.0f, 1.0f, 1.0f); 
@@ -23 +24 @@
 {
         //return tex2D(colors, IN.c.xy);
+
         // normal discontinuity filter
         float3 nc = (float3)tex2D(normals, IN.c.xy);
@@ -37 +39 @@
         float ne = saturate(dot(nd, e_weights.x));
 
-        // opposite coordinates
+        // construct opposite coordinates
         float4 lrr = IN.lr.wzyx;
         float4 tbr = IN.tb.wzyx;
@@ -66 +68 @@
 
         dd = abs(2.0f * dc - dd) - e_barrier.y;
-        dd = step(dd, 0.0f);
+        dd = step(dd, (float4)0.0f);
 
         float de = saturate(dot(dd, e_weights.y));
@@ -77 +79 @@
         float2 offset = IN.c.xy * (1.0f - w);
 
-        float4 s0 = tex2D(colors, offset + IN.lt.xy * w);
-        float4 s1 = tex2D(colors, offset + IN.rb.xy * w);
-        float4 s2 = tex2D(colors, offset + IN.rt.xy * w);
-        float4 s3 = tex2D(colors, offset + IN.lb.xy * w);
+        float4 s0 = tex2Dlod(colors, float4(offset + IN.lt.xy * w, 0, 0));
+        float4 s1 = tex2Dlod(colors, float4(offset + IN.rb.xy * w, 0, 0));
+        float4 s2 = tex2Dlod(colors, float4(offset + IN.rt.xy * w, 0, 0));
+        float4 s3 = tex2Dlod(colors, float4(offset + IN.lb.xy * w, 0, 0));
 
-        return (s0 + s1 + s2 + s3) / 4.0f;
+        float4 sx = tex2D(colors, IN.c.xy);
+
+        //return (sx + sx) * 0.5f;
+
+        return (s0 + s1 + s2 + s3) * 0.25f;
+        //return (s0 + s1 + s2 + s3) * 0.25f;
+
         //return float4(w);
 }