source: GTP/branches/IllumWPdeliver2008dec/IlluminationWP/demos/Standalone/PathMap [DirectX]/normalize.fx @ 3255

texture atlas;
sampler atlasSampler = sampler_state
{
   Texture = <atlas>;
   MinFilter = Point;
   MagFilter = Point;
   MipFilter = None;
   AddressU = Wrap;
   AddressV = Wrap;
};

struct vsInputNormalizePRM
{
    float4      pos                     : POSITION;
    float2      tex                     : TEXCOORD0;
};

struct vsOutputNormalizePRM
{
    float4      pos                     : POSITION;
    float2      tex                     : TEXCOORD0;
};

vsOutputNormalizePRM
        vsNormalizePRM(vsInputNormalizePRM input)
{
    vsOutputNormalizePRM output = (vsOutputNormalizePRM)0;
    output.pos = input.pos;
    output.tex = input.tex;
    return output;
}

float4
        psNormalizePRM(vsOutputNormalizePRM input) : COLOR0
{
//      float4 unn = tex2D(atlasSampler, input.tex + float2(0.5 / 4096.0, 0.5 / 128.0));
        float4 unn = tex2D(atlasSampler, input.tex);
//      if(unn.a < 1.0 / 4096.0)
//              unn = float4(0, 0, 0, 1);
//      return unn;
        return float4(unn.rgb * (4096.0 / unn.a), 1);
}


technique NormalizePRM{
        pass P0
    {
        VertexShader = compile vs_3_0 vsNormalizePRM();
        PixelShader  = compile ps_3_0 psNormalizePRM();
    }
}