Edge_Detect.dctl

// Edge Detect
// Resolution: 3x3

__CONSTANT__ float Gaus[9] = { 0.0f, 1.0f, 0.0f, 
                               1.0f, -4.0f, 1.0f, 
							   0.0f, 1.0f, 0.0f };


__DEVICE__ float3 transform(int p_Width, int p_Height, int p_X, int p_Y, __TEXTURE__ p_TexR, __TEXTURE__ p_TexG, __TEXTURE__ p_TexB)
{
    
    
    float3 result; 
    
    
    result.x = (Gaus[0] * _tex2D(p_TexR, p_X - 1, p_Y + 1)) + (Gaus[1] * _tex2D(p_TexR, p_X, p_Y + 1)) + (Gaus[2] * _tex2D(p_TexR, p_X + 1, p_Y + 1)) + (Gaus[3] * _tex2D(p_TexR, p_X - 1, p_Y)) + (Gaus[4] * _tex2D(p_TexR, p_X, p_Y))
                     + (Gaus[5] * _tex2D(p_TexR, p_X + 1, p_Y)) + (Gaus[6] * _tex2D(p_TexR, p_X - 1, p_Y - 1)) + (Gaus[7] * _tex2D(p_TexR, p_X, p_Y - 1)) + (Gaus[8] * _tex2D(p_TexR, p_X - 1, p_Y - 1));
    
    result.y = (Gaus[0] * _tex2D(p_TexG, p_X - 1, p_Y + 1)) + (Gaus[1] * _tex2D(p_TexG, p_X, p_Y + 1)) + (Gaus[2] * _tex2D(p_TexG, p_X + 1, p_Y + 1)) + (Gaus[3] * _tex2D(p_TexG, p_X - 1, p_Y)) + (Gaus[4] * _tex2D(p_TexG, p_X, p_Y))
                     + (Gaus[5] * _tex2D(p_TexG, p_X + 1, p_Y)) + (Gaus[6] * _tex2D(p_TexG, p_X - 1, p_Y - 1)) + (Gaus[7] * _tex2D(p_TexG, p_X, p_Y - 1)) + (Gaus[8] * _tex2D(p_TexG, p_X - 1, p_Y - 1));
    
    
    result.z = (Gaus[0] * _tex2D(p_TexB, p_X - 1, p_Y + 1)) + (Gaus[1] * _tex2D(p_TexB, p_X, p_Y + 1)) + (Gaus[2] * _tex2D(p_TexB, p_X + 1, p_Y + 1)) + (Gaus[3] * _tex2D(p_TexB, p_X - 1, p_Y)) + (Gaus[4] * _tex2D(p_TexB, p_X, p_Y))
                     + (Gaus[5] * _tex2D(p_TexB, p_X + 1, p_Y)) + (Gaus[6] * _tex2D(p_TexB, p_X - 1, p_Y - 1)) + (Gaus[7] * _tex2D(p_TexB, p_X, p_Y - 1)) + (Gaus[8] * _tex2D(p_TexB, p_X - 1, p_Y - 1));
    

    return result;
}