Changeset 1131 for GTP/trunk/App/Demos/Illum/Ogre/Media/materials/programs/GameTools_DepthShadow.hlsl

Timestamp:

07/13/06 08:17:27 (18 years ago)

Author:

szirmay

Message:

 

File:

• GTP/trunk/App/Demos/Illum/Ogre/Media/materials/programs/GameTools_DepthShadow.hlsl (modified) (5 diffs)

GTP/trunk/App/Demos/Illum/Ogre/Media/materials/programs/GameTools_DepthShadow.hlsl

@@ -7 +7 @@
 
 VS_OUT DepthVS(float4 position : POSITION,      
-                                uniform float4x4 worldViewProj,                         
-                                uniform float4x4 viewProj,
-                                uniform float4x4 cameraMatrix)
+                                uniform float4x4 worldViewProj)
 {
   
@@ -15 +13 @@
  
   OUT.hPosition = mul(worldViewProj, position);
-  OUT.Position = mul(viewProj, position);
+  OUT.Position = mul(worldViewProj, position);
   
   return OUT;
@@ -25 +23 @@
         float4 pos = (IN.Position / IN.Position.w);
         pos = (pos +1.0 ) / 2.0;
-        return pos.z;   
+        return float4(pos.z, pos.z * pos.z, 1, 1);      
 }
 
@@ -39 +37 @@
 VS_OUT_SHADOW depthShadowVS(float4 position : POSITION, 
                                                         uniform float4x4 worldViewProj,
+                                                        uniform float4x4 world,
                                                         uniform float4x4 lightViewProj)
 {
   VS_OUT_SHADOW OUT;
   OUT.hPosition = mul(worldViewProj, position);
-  OUT.lPosition = mul(lightViewProj, position);  
+  float4 wPos = mul(world, position);
+  OUT.lPosition = mul(lightViewProj, wPos);  
   OUT.Position = position;  
   return OUT;
@@ -54 +54 @@
                                         ):COLOR
 {       
-        float bias = 0.01;
+        float bias = 0.1;
         float4 light = float4(1,1,1,1);
         float4 shadow = float4(0.3,0.3,0.3,1);
         
         float4 pos = (IN.lPosition / IN.lPosition.w);
-        pos = (pos +1.0 ) / 2.0;
+        pos.xy = (pos.xy +1.0 ) / 2.0;
         pos.y = 1.0 - pos.y;
         float4 storedDepth = tex2D(depthShadowMap, pos.xy);
-        if(storedDepth.r + bias < pos.z)
-                light = shadow;
+        
+        if(storedDepth.r + bias > pos.z)
+        {
+                float M1 = storedDepth.r;
+                float M2 = storedDepth.g;
+                float v2 = M2 - M1 * M1;
+                float pmax = v2 / (v2 + pow(M1 - pos.z, 2));
+                light = shadow + (1 - shadow) * pmax;
+                
+                //light = shadow;
+        }
         //return abs( pos.z - storedDepth.z );  
         return light;