glfw.OpenWindow( 512, 512, 0, 0, 0, 0, 0, 0, GLFW_WINDOW )
glfw.SetWindowTitle("me#2")

hook.Add("OnUpdate", "gl", function()
    local width, height = glfw.GetWindowSize()

    gl.Viewport( 0, 0, width, height )

    gl.ClearColor( 0, 0, 0, 0 )
    gl.Clear( GL_COLOR_BUFFER_BIT )

    gl.MatrixMode( GL_PROJECTION )
    gl.LoadIdentity()
    glu.Perspective( 65, width/height, 1, 100 )

    -- Draw some rotating garbage
    gl.MatrixMode( GL_MODELVIEW )
    gl.LoadIdentity()
    glu.LookAt(0, -10, 0,
            0, 0, 0,
            0, 0, 1 )

    gl.Rotatef(os.clock()*50, 0.25, 1, 0.75)
    gl.Begin( GL_TRIANGLES )
      gl.Color3f(0.1, 0, 0 )
      gl.Vertex3f(0, 3, -4)
      gl.Color3f(0, 1, 0 )
      gl.Vertex3f(3, -2, -4)
      gl.Color3f(0, 0, 1 )
      gl.Vertex3f(-3, -2, -4)
    gl.End()
    gl.Begin( GL_TRIANGLES )
      gl.Color3f(0, 0.1, 0 )
      gl.Vertex3f(0, 3, -3)
      gl.Color3f(0, 0, 1 )
      gl.Vertex3f(3, -2, -2)
      gl.Color3f(1, 0, 0)
      gl.Vertex3f(-3, -2, 2)
    gl.End()
    glfw.SwapBuffers()
end)