Changeset 2471 for GTP/trunk/App/Demos/Illum/Ogre/Media/materials/GTPEnvMap/GTPEnvMap.hlsl

Timestamp:

07/02/07 04:04:08 (17 years ago)

Author:

szirmay

Message:

 

File:

• GTP/trunk/App/Demos/Illum/Ogre/Media/materials/GTPEnvMap/GTPEnvMap.hlsl (modified) (3 diffs)

GTP/trunk/App/Demos/Illum/Ogre/Media/materials/GTPEnvMap/GTPEnvMap.hlsl

@@ -13 +13 @@
 }
 
-#define SECANT_ITERATIONCOUNT 2
+#define SECANT_ITERATIONCOUNT 20
 
 float3 Hit( float3 x, float3 R, samplerCUBE mp )
@@ -91 +91 @@
                                                                                 uniform float sRefraction ) :COLOR0
 {
+        float4 Color = 0;
         float3 N = normalize(IN.wNormal.xyz);
         float3 RR, TT;  
@@ -97 +98 @@
         float3 R = reflect( V, N);      
         float3 T = refract(V, N, sRefraction);
-        
+
+                
         RR = R; TT = T; 
         RR = Hit(cubePos, R, DistanceMap);
-        TT = Hit(cubePos, T, DistanceMap);
+        float4 reflectcolor = readCubeMap(CubeMap, RR );                
         
-        float4 reflectcolor = readCubeMap(CubeMap, RR );                
-        float4 refractcolor = readCubeMap(CubeMap, TT );                
+        if(dot(T,T)!=0)
+        {
+                TT = Hit(cubePos, T, DistanceMap);
+                float4 refractcolor = readCubeMap(CubeMap, TT );                
         
-        float cos_theta = -dot(V, N);
-        float F = (sFresnel + pow(1 - cos_theta, 5.0f) * (1 - sFresnel));
-        
-        return (F * reflectcolor + (1 - F) * refractcolor);     
+                float cos_theta = -dot(V, N);
+                float F = (sFresnel + pow(1 - cos_theta, 5.0f) * (1 - sFresnel));
+                F = saturate(F);
+                Color =  (F * reflectcolor + (1 - F) * refractcolor);
+        }
+        else
+        {
+                Color = reflectcolor;
+        }
+  return Color;
 }