source: GTP/branches/IllumWPdeliver2008dec/IlluminationWP/demos/OgreGames/CarGame/Media/materials/programs/GameTools_Depth.hlsl @ 3255

float farplane = 100.0;
float nearplane = 0.1;

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

VS_OUT hDepthVS(float4 position : POSITION,     
                uniform float4x4 worldView,
                uniform float4x4 worldViewProj)
{
  VS_OUT OUT;
  OUT.hPosition = mul(worldViewProj, position);
  OUT.Position = ( OUT.hPosition / OUT.hPosition.w + 1) / 2.0;
  return OUT;
}

VS_OUT cDepthVS(float4 position : POSITION,     
                uniform float4x4 worldView,
                uniform float4x4 worldViewProj)
{
  VS_OUT OUT;
  OUT.hPosition = mul(worldViewProj, position);
  OUT.Position = mul(worldView, position);
  OUT.Position.z *= -1.0;
  return OUT;
}


float4 DepthPS(VS_OUT IN ):COLOR
{
        return float4(IN.Position.z, IN.Position.z, IN.Position.z, 1);  
}