Changeset 1339 for GTP/trunk/App/Demos/Illum/Ogre/Media/materials/programs/GameTools_HPS_Smoke_S.hlsl

Timestamp:

09/11/06 23:09:16 (18 years ago)

Author:

szirmay

Message:

 

File:

• GTP/trunk/App/Demos/Illum/Ogre/Media/materials/programs/GameTools_HPS_Smoke_S.hlsl (modified) (1 diff)

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

@@ -2 +2 @@
 struct VS_OUT
 {
-        float4 hPosition : POSITION;
-        float4 cPosition : TEXCOORD0;
-        float  radius    : TEXCOORD2;
-        float4 texCoord  : TEXCOORD1;
+        float4 hPosition        : POSITION;
+        float4 cPosition        : TEXCOORD1;
+        float2 texCoord         : TEXCOORD0;
+        float r                         : TEXCOORD2;    
+        float4 center           : TEXCOORD3;
 };
 
-VS_OUT VP(float4 mPosition : POSITION,
-                  uniform float4x4 worldView,
-                  uniform float4x4 Proj,
-                  uniform float4x4 worldViewProj
-                  float2 texCoord :TEXCOORD0)
+VS_OUT HPS_Smoke_S_VS (float4 position : POSITION,      
+                float4 texCoord : TEXCOORD0,
+                
+                uniform float4x4 worldView,
+                uniform float4x4 Proj,
+                uniform float4x4 worldViewProj)
 {
- VS_OUT Out;
- Out.texCoord.xy = texCoord; 
- Out.texCoord.zw = (texCoord * 2.0) - 1.0; 
+        VS_OUT OUT;
+  
+        float2 offset = texCoord.zw;
+        float4 cPosition;   
+        cPosition = mul(worldView, position);
+        OUT.center = cPosition; 
+        cPosition.xy += offset;                         
+        OUT.cPosition = cPosition;
+        OUT.r = abs(texCoord.z);                
  
- float2 offset = texCoord.zw;
- float4 cPosition = mul(worldView, mPosition);
- cPosition.xy += offset;
-   
- Out.hPosition = mul( Proj, cPosition );
- Out.cPosition = cPosition;
- Out.radius = abs(offset.x);
- 
-  return OUT;
+    OUT.hPosition = mul( Proj, cPosition );
+     
+    OUT.texCoord = texCoord.xy;    
+        return OUT;
+} 
+
+
+float4 HPS_Smoke_S_PS(VS_OUT IN,
+                                                uniform float4x4 Proj,
+                                                uniform sampler2D Texture       ) : COLOR
+{
+        float4 Color = 0;
+        float f = 0;
+        float b = 1;
+        float alpha = 0;
+                
+        float d = length( IN.cPosition.xyz - IN.center.xyz);
+        
+        if( d < IN.r )
+        {        
+         float w = sqrt( IN.r * IN.r - d * d );
+         float4 fPosition = IN.cPosition;
+         float4 bPosition = IN.cPosition;
+         fPosition.z -= w;
+         bPosition.z += w;
+         fPosition = mul(Proj, fPosition);
+         bPosition = mul(Proj, bPosition);
+         f = (fPosition.z / fPosition.w + 1.0) / 2.0;
+         b = (bPosition.z / bPosition.w + 1.0) / 2.0;
+         alpha = w / IN.r;      
+        }
+        else
+         discard;
+        
+        Color.r = f;
+        Color.g = 1 - b;
+        Color.a = alpha;
+        
+        
+        return Color; 
 }
-
-float4 FP(VS_OUT In,
-                  uniform float4x4 Proj,
-                  uniform sampler2D Texture):COLOR
-{
-        float4 color = 1;
-        float front = 0;
-        float back = 1;
-        
-        float4 tex = tex2D(Texture, In.texCoord.xy);
-        float d = length(In.TexCoord.zw);
-        float w = sqrt(In.radius * In.radius - d * d);
-        if(d < r)
-        {
-                float4 positionF; float4 positionB;
-                positionF = positionB = In.cPosition;
-                positionF.z -= w;
-                positionB.z += w;
-                positionF = mul(Proj, positionF);
-                positionB = mul(Proj, positionB);
-                positionF = (positionF / positionF.w + 1.0) / 2.0;
-                positionB = (positionB / positionB.w + 1.0) / 2.0;
-        }
-        color.rgb = positionF.z;
-        
-        return color;
-}