source: GTP/trunk/App/Demos/Illum/Ogre/Media/materials/programs/GameTools_Focusing.hlsl @ 1131

struct VS_OUT
{
        float4 hPosition        : POSITION;
        float4 Position         : TEXCOORD0;
};

VS_OUT FocusingVS(float4 position : POSITION,   
                uniform float4x4 world,
                uniform float4x4 worldViewProj,
                uniform float4x4 lightTransform)
{
  VS_OUT OUT;
  OUT.hPosition = mul(worldViewProj, position);
  float4 wPos = mul(world, position);  
  OUT.Position = mul(lightTransform, wPos);
  return OUT;
}

float4 FocusingPS(VS_OUT IN ):COLOR
{
        
  return float4(IN.Position.xyz / IN.Position.w, 1);    
}