Imports github.com/go-gl/gl/v4.1-core/gl github.com/go-gl/glfw/v3.3/glfw github.com/go-gl/mathgl/mgl32 golang.org/x/image/font golang.org/x/image/font/sfnt golang.org/x/image/math/fixed Standard library imports fmt image image/png io/ioutil os runtime strings time unsafe