source: data/branches/Shader_HS18/programs/Cg/HalftoneFP.cg @ 12294

sampler2D RT : register(s0);
sampler3D pattern : register(s1);

float4 Halftone_ps(     float4 pos : POSITION,
      float2 TexCoord : TEXCOORD0,
                        uniform float2 numTiles,
                        uniform float2 iNumTiles,
                        uniform float2 iNumTiles2,
                        uniform float4 lum) : COLOR
{       
        float3 local;
        local.xy = fmod(TexCoord, iNumTiles);
        float2 middle = TexCoord - local.xy;
        local.xy = local.xy * numTiles;
        middle +=  iNumTiles2;
        local.z = dot(tex2D(RT, middle ) , lum);
        float4 c = tex3D(pattern,local).r;
        return c;
}