MARS_SONY.DCTL

__DEVICE__ float3 transform(int p_Width, int p_Height, int p_X, int p_Y, __TEXTURE__ p_TexR, __TEXTURE__ p_TexG, __TEXTURE__ p_TexB)
{
    float r = 0;
    float g = 0;
    float b = 0;

    int Y=p_Y;
    int X=p_X;
   
    if (X%2 == 0 && Y%2 == 1) {
    r = _tex2D(p_TexR, X, Y-1);
    g = ((_tex2D(p_TexG, X, Y) + _tex2D(p_TexG, X+1, Y+1))/2);
    b = _tex2D(p_TexB, X+1, Y+1);
    }

    if (X%2 == 1 && Y%2 == 1) {
    r = _tex2D(p_TexR, X-1, Y-1);
    g = ((_tex2D(p_TexG, X-1, Y) + _tex2D(p_TexG, X, Y+1))/2);
    b = _tex2D(p_TexB, X, Y);
    }

    if (X%2 == 0 && Y%2 == 0) {
    r = _tex2D(p_TexR, X, Y);
    g = ((_tex2D(p_TexG, X, Y-1) + _tex2D(p_TexG, X+1, Y))/2);
    b = _tex2D(p_TexB, X+1, Y-1);

    }


    if (X%2 == 1 && Y%2 == 0) {
    r = _tex2D(p_TexR, X-1, Y); 
    g = ((_tex2D(p_TexG, X, Y) + _tex2D(p_TexG, X-1, Y-1))/2);
    b = _tex2D(p_TexB, X, Y-1);
  
    }

  return make_float3(r, g, b);


}