GainTexture.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)
{
    const float r = _tex2D(p_TexR, p_X, p_Y) * 2.0f;
    const float g = _tex2D(p_TexG, p_X, p_Y) * 2.0f;
    const float b = _tex2D(p_TexB, p_X, p_Y) * 2.0f;

    return make_float3(r, g, b);
}