Calculate resolution proportions

function love.load()
    WW, WH = 1360, 768
    mw, mh = 1360, 768

    for i = 1, math.max(WW, WH) do
        local nx, ny = WW/i, WH/i
        if math.mod(nx, 1) == 0 and math.mod(ny, 1) == 0 then
            mw, mh = nx, ny
        end
    end

    error(mw .. ":" .. mh)
end