Changeset 2527 for GTP/trunk/App/Demos/Illum/Ogre/Media/materials/GTPCaustic/GTPCaustic.hlsl

Timestamp:

07/05/07 16:18:22 (17 years ago)

Author:

szirmay

Message:

 

File:

• GTP/trunk/App/Demos/Illum/Ogre/Media/materials/GTPCaustic/GTPCaustic.hlsl (modified) (4 diffs)

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

@@ -123 +123 @@
                 OUT.center = cPosition.xy;
                 OUT.position = cPosition;       
-                OUT.hPosition = mul(Proj, cPosition);           
+                OUT.hPosition = mul(Proj, cPosition);
+                OUT.center = float2(OUT.hPosition.x, OUT.hPosition.y) / OUT.hPosition.w;
+                
   }     
   
@@ -142 +144 @@
   IN.color = CausticColor;
   float intens = tex2D(intensityTex, IN.texCoord).r;
+  //IN.color.a *= intens;
+  IN.color *= IN.color.a * intens;
+  IN.color.a = IN.dist;
+  return IN.color;  
+}
+
+
+float4 CauCube_Point_PS(CauCube_PointSprite_VS_OUT IN,
+                                                uniform float targetResolution,
+                                                float2 pixelPos : VPOS,
+                                                                uniform float4 CausticColor,
+                                                                uniform sampler2D intensityTex : register(s1)
+                                                                 ):COLOR
+{
+ IN.color = CausticColor;
+ 
+ float2 screen = pixelPos / targetResolution;
+ screen *= float2(2, 2);
+ screen -= float2(1, 1);
+ screen.y *= -1;
+ float2 texCoord = (screen - IN.center) / (IN.r / targetResolution);//(-1 , 1)
+ 
+ float intens = 1.0 - saturate(length(texCoord));
+ //return float4(intens,0,1,1);
+ //texCoord = (texCoord + 1.0) / 2.0; // (0, 1)  
+ //float intens = tex2D(intensityTex, texCoord).r;
+ 
+  
   //IN.color.a *= intens;
   IN.color *= IN.color.a * intens;
@@ -178 +208 @@
    if(pos.a == 0)//no photon hit
    {
-                OUT.color = float4(0,0,0,0);            
+                OUT.color = float4(0,1,0,1);            
                 OUT.hPosition = float4(1000000, 1000000, 1000000, 1);
    }
@@ -227 +257 @@
                 
                 float avrdist = sumdist / valids;
-                if(valids == 0) avrdist = WorldSize / 1000.0;           
+                if(valids * avrdist == 0) avrdist = WorldSize / 1000.0;         
                 
                 intensity = WorldSize / (avrdist * avrdist * 3.14);
+                intensity = min(50, max(0,intensity));
                 //intensity = 0.8;
-                
+        
+        //      if(dot(intensity, intensity) == 0)
+        //              OUT.color = float4(1,0,0,1);    
+        //      else
                 OUT.color = intensity;
-                if(notUseIntensity)
-                        OUT.color = float4(1,1,1,1);            
+        
+        //      if(notUseIntensity)
+        //              OUT.color = float4(1,1,1,1);            
         }  
   
    OUT.dist = length(pos.xyz);
+   //OUT.color = float4(0,0,0,0);
    return OUT;
 }