func main() {
	var err error
	if err = glfw.Init(); err != nil {
		fmt.Fprintf(os.Stderr, "[e] %v\n", err)
		return
	}

	defer glfw.Terminate()

	// Open window with FSAA samples (if possible).
	glfw.OpenWindowHint(glfw.FsaaSamples, 4)

	if err = glfw.OpenWindow(400, 400, 0, 0, 0, 0, 0, 0, glfw.Windowed); err != nil {
		fmt.Fprintf(os.Stderr, "[e] %v\n", err)
		return
	}

	defer glfw.CloseWindow()

	glfw.SetWindowTitle("Aliasing Detector")
	glfw.SetSwapInterval(1)

	if samples := glfw.WindowParam(glfw.FsaaSamples); samples != 0 {
		fmt.Fprintf(os.Stdout, "Context reports FSAA is supported with %d samples\n", samples)
	} else {
		fmt.Fprintf(os.Stdout, "Context reports FSAA is unsupported\n")
	}

	gl.MatrixMode(gl.PROJECTION)
	glu.Perspective(0, 1, 0, 1)

	for glfw.WindowParam(glfw.Opened) == 1 {
		time := float32(glfw.Time())

		gl.Clear(gl.COLOR_BUFFER_BIT)

		gl.LoadIdentity()
		gl.Translatef(0.5, 0, 0)
		gl.Rotatef(time, 0, 0, 1)

		gl.Enable(GL_MULTISAMPLE_ARB)
		gl.Color3f(1, 1, 1)
		gl.Rectf(-0.25, -0.25, 0.25, 0.25)

		gl.LoadIdentity()
		gl.Translatef(-0.5, 0, 0)
		gl.Rotatef(time, 0, 0, 1)

		gl.Disable(GL_MULTISAMPLE_ARB)
		gl.Color3f(1, 1, 1)
		gl.Rectf(-0.25, -0.25, 0.25, 0.25)
		glfw.SwapBuffers()
	}
}

func main() {
	var err error

	if err = glfw.Init(); err != nil {
		fmt.Fprintf(os.Stderr, "[e] %v\n", err)
		return
	}
	defer glfw.Terminate()

	if err = glfw.OpenWindow(Width, Height, 8, 8, 8, 8, 0, 8, glfw.Windowed); err != nil {
		fmt.Fprintf(os.Stderr, "[e] %v\n", err)
		return
	}
	defer glfw.CloseWindow()

	glfw.SetSwapInterval(1)
	glfw.SetWindowTitle(Title)
	glfw.SetWindowSizeCallback(onResize)
	glfw.SetKeyCallback(onKey)

	gl.ShadeModel(gl.SMOOTH)
	gl.ClearColor(0, 0, 0, 0)
	gl.ClearDepth(1)
	gl.Enable(gl.TEXTURE_2D)

	for running && glfw.WindowParam(glfw.Opened) == 1 {
		update()
		draw()
	}
}

func GameLoop() {

	t := 0.0
	dt := 0.1

	CreateUniverse()

	camera.PositionCamera(0, 0, 1000, 900)

	for glfw.WindowParam(glfw.Opened) == 1 {

		t += dt

		gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
		gl.Clear(gl.DEPTH_BUFFER_BIT | gl.LIGHTING_BIT)

		for i := range universe.Systems {
			for j := range universe.Systems[i].Planets {
				BufferPlanet(universe.Systems[i].Planets[j])
				ai.PlanetOrbit(universe.Systems[i].Planets[j], t)
			}
			for j := range universe.Systems[i].Stars {
				BufferStar(universe.Systems[i].Stars[j])
				ai.StarStationary(universe.Systems[i].Stars[j], t)
			}
		}

		glfw.SwapBuffers()
	}
}

func main() {
	log.Println("Starting")
	flag.Parse()

	runtime.GOMAXPROCS(4)

	initGLFW()
	initGL()

	initScene()

	initInput()

	glfw.SetWindowSizeCallback(resize)

	initLua()

	// Run the script file if we had one
	// TODO: Do this before accepting input from user...
	if fScript != "" {
		runFile(fScript)
	}

	for glfw.WindowParam(glfw.Opened) == 1 {
		display()
		glfw.SwapBuffers()
		time.Sleep(10 * time.Millisecond)
	}

}

func main() {
	var running bool = true

	if err := glfw.Init(); err != nil {
		fmt.Fprintf(os.Stderr, "[e] %v\n", err)
		return
	}

	defer glfw.Terminate()

	if err := glfw.OpenWindow(appWidth, appHeight, 8, 8, 8, 8,
		24, 8, glfw.Windowed); err != nil {
		fmt.Fprintf(os.Stderr, "[e] %v\n", err)
		return
	}
	defer glfw.CloseWindow()

	glfw.SetSwapInterval(1)
	glfw.SetWindowTitle(caption)

	if !horde3d.Init() {
		fmt.Println("Error starting Horde3D. Check Horde3d_log.html for details.")
		horde3d.DumpMessages()
		return
	}

	//horde3d.SetOption(horde3d.Options_DebugViewMode, 1)
	// Add resources
	//pipeline
	pipeRes = horde3d.AddResource(horde3d.ResTypes_Pipeline, "pipelines/hdr.pipeline.xml", 0)

	knightRes := horde3d.AddResource(horde3d.ResTypes_SceneGraph, "models/knight/knight.scene.xml", 0)

	//load resources paths separated by |
	horde3d.LoadResourcesFromDisk("../content")

	model := horde3d.RootNode.AddNodes(knightRes)
	model.SetTransform(0, 0, -30, 0, 0, 0, 0.1, 0.1, 0.1)

	// Add light source
	light := horde3d.RootNode.AddLightNode("Light1", 0, "LIGHTING", "SHADOWMAP")
	light.SetTransform(0, 20, 0, 0, 0, 0, 1, 1, 1)
	light.SetNodeParamF(horde3d.Light_RadiusF, 0, 50)

	//add camera
	cam = horde3d.RootNode.AddCameraNode("Camera", pipeRes)
	glfw.SetWindowSizeCallback(onResize)

	for running {

		horde3d.Render(cam)
		horde3d.FinalizeFrame()
		horde3d.DumpMessages()
		glfw.SwapBuffers()
		running = glfw.Key(glfw.KeyEsc) == 0 &&
			glfw.WindowParam(glfw.Opened) == 1
	}

	horde3d.Release()
}

func main() {
	rand.Seed(time.Now().UnixNano())

	glfw.Init()
	defer glfw.Terminate()
	glfw.OpenWindow(Width, Height, 8, 8, 8, 8, 0, 8, glfw.Windowed)
	defer glfw.CloseWindow()

	glfw.SetSwapInterval(1)
	glfw.SetWindowTitle("Chipmunk demo")
	glfw.SetWindowSizeCallback(onResize)
	glfw.SetKeyCallback(onKey)

	initGL()
	initScene()

	Running = true

	for Running && glfw.WindowParam(glfw.Opened) == 1 {
		drawScene()
		space.Step(1.0 / 20.0 / 3.0)
		space.Step(1.0 / 20.0 / 3.0)
		space.Step(1.0 / 20.0 / 3.0)
	}
}

// Render draws the contents of the window, but no more than 30
// times per second.
func (w *Window) Render() {
	// Don't render more than 30 times per second.
	t := time.Now()
	if time.Since(w.lastRender).Seconds() < 1.0/30.0 {
		return
	}
	w.lastRender = t

	// Retrieve the view width and height, in pixels.
	params := make([]int32, 4)
	gl.GetIntegerv(gl.VIEWPORT, params)

	// Infer the rendering volume from the viewport size, so the
	// the rendering code can assume that the width of a pixel is
	// ~1.0.  This is important when rendering text.  This must
	// match the gl.Frustum configuration.
	width := float64(params[2])
	height := float64(params[3])
	depth := (width + height) / 2

	// Redraw the window, but not too often.
	gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
	w.renderer.Render(width, height, depth)
	glfw.SwapBuffers()

	// Exit if the user presses escape or the window was closed.
	if glfw.Key(glfw.KeyEsc) != 0 || glfw.WindowParam(glfw.Opened) == 0 {
		os.Exit(0)
	}
}

func main() {
	if err := glfw.Init(); err != nil {
		fmt.Fprintf(os.Stderr, "glfw: %s\n", err)
		return
	}
	defer glfw.Terminate()

	glfw.OpenWindowHint(glfw.WindowNoResize, 1)

	if err := glfw.OpenWindow(Width, Height, 0, 0, 0, 0, 0, 0, glfw.Windowed); err != nil {
		fmt.Fprintf(os.Stderr, "glfw: %s\n", err)
		return
	}
	defer glfw.CloseWindow()

	glfw.SetSwapInterval(1)
	glfw.SetWindowTitle(Title)

	if err := gl.Init(); err != nil {
		fmt.Fprintf(os.Stderr, "gl: %s\n", err)
	}

	if err := initScene(); err != nil {
		fmt.Fprintf(os.Stderr, "init: %s\n", err)
		return
	}
	defer destroyScene()

	for glfw.WindowParam(glfw.Opened) == 1 {
		drawScene()
		glfw.SwapBuffers()
	}
}

func main() {
	log.Printf("Starting glfw window")

	err := glfw.Init()
	if err != nil {
		log.Fatalf("Error while starting glfw library: %v", err)
	}
	defer glfw.Terminate()

	err = glfw.OpenWindow(256, 256, 8, 8, 8, 0, 0, 0, glfw.Windowed)
	if err != nil {
		log.Fatalf("Error while opening glfw window: %v", err)
	}
	defer glfw.CloseWindow()

	glfw.SetSwapInterval(1) //vsync on

	glfw.SetWindowTitle("Colored Triangle")

	InitGL()

	glfw.SetWindowSizeCallback(func(w, h int) { InitGLWindow(w, h) })
	glfw.SetKeyCallback(func(key, state int) { HandleKey(key, state) })

	run := true
	for run && glfw.WindowParam(glfw.Opened) == 1 {
		select {
		case exitCode := <-exit:
			log.Printf("Received exit code: %d", exitCode)
			run = false
		default:
			Draw()
		}
	}
}

func main() {
	flag.Parse()

	Load(flag.Args())

	Init(800, 600, *flag_smooth, *flag_multisample, true)
	InitInputHandlers()
	defer glfw.CloseWindow()
	defer glfw.Terminate()

	start := time.Now()
	frames := 0

	Viewpos[2] = -20

	for glfw.WindowParam(glfw.Opened) == 1 { // window open
		Render()
		frames++
		if Wantscrot {
			Screenshot()
			Wantscrot = false
		}
		glfw.WaitEvents()
	}

	fps := int((float64(frames) / float64(time.Since(start))) * float64(time.Second))
	log.Println("average FPS:", fps)
}

func main() {
	globalState.Mouse = make(map[int]bool)
	flag.Parse()
	var err error
	if err = glfw.Init(); err != nil {
		fmt.Fprintf(os.Stderr, "[e] %v\n", err)
		return
	}

	if len(flag.Args()) == 0 {
		old := flag.Usage
		flag.Usage = func() {
			old()
			fmt.Fprintf(os.Stderr, "You MUST pass the name of the file to view\n")
		}
		flag.Usage()
		return
	}

	mesh, err = wfobj.LoadMeshFromFile(flag.Args()[0])
	if err != nil {
		flag.Usage()
		fmt.Fprintf(os.Stderr, "[e] %v\n", err)
		return
	}

	defer glfw.Terminate()

	if err = glfw.OpenWindow(Width, Height, 8, 8, 8, 8, 0, 8, glfw.Windowed); err != nil {
		fmt.Fprintf(os.Stderr, "[e] %v\n", err)
		return
	}

	defer glfw.CloseWindow()

	glfw.SetSwapInterval(1)
	glfw.SetWindowTitle(Title)
	glfw.SetWindowSizeCallback(onResize)
	glfw.SetKeyCallback(onKey)
	glfw.SetCharCallback(onChar)
	glfw.SetMouseWheelCallback(onWheel)
	glfw.SetMouseButtonCallback(onMouseButton)
	glfw.SetMousePosCallback(onMousePos)

	initGL()

	running = true
	for running && glfw.WindowParam(glfw.Opened) == 1 {
		handleInput()
		drawScene()
	}
}

func Live(in_ nimble.ChanN) {
	go func() {
		in := in_.NewReader()

		Frame = new(dump.Frame)
		Frame.Components = in.NComp()
		Frame.MeshSize = in.Mesh().Size()
		Frame.MeshStep = in.Mesh().CellSize()
		Crop2 = Frame.MeshSize
		ncell := in.Mesh().NCell()
		n := ncell * in.NComp()
		Frame.Data = make([]float32, n)

		Init(800, 600, true, 2, true)
		InitInputHandlers()
		defer glfw.CloseWindow()
		defer glfw.Terminate()
		Viewpos[2] = -20

		wantframe := new(atomicbool)
		wantframe.set(true)

		go func() {
			gpu.LockCudaThread()
			for {
				data := in.ReadNext(ncell)
				if wantframe.get() {
					for i, d := range data {
						d.Device().CopyDtoH(Frame.Data[i*ncell : (i+1)*ncell])
					}
					wantframe.set(false)
				}
				in.ReadDone()
			}
		}()

		for glfw.WindowParam(glfw.Opened) == 1 { // window open
			Render()
			if Wantscrot {
				Screenshot()
				Wantscrot = false
			}
			if wantframe.get() == false {
				PreRender(Frame)
				wantframe.set(true)
			}
		}
	}()
}

func main() {
	var err error
	if err = glfw.Init(); err != nil {
		fmt.Fprintf(os.Stderr, "[e] %v\n", err)
		return
	}

	// Ensure glfw is cleanly terminated on exit.
	defer glfw.Terminate()

	if err = glfw.OpenWindow(256, 256, 8, 8, 8, 0, 0, 0, glfw.Windowed); err != nil {
		fmt.Fprintf(os.Stderr, "[e] %v\n", err)
		return
	}

	// Ensure window is cleanly closed on exit.
	defer glfw.CloseWindow()

	// Enable vertical sync on cards that support it.
	glfw.SetSwapInterval(1)

	// Set window title
	glfw.SetWindowTitle("Simple GLFW window")

	// Hook some events to demonstrate use of callbacks.
	// These are not necessary if you don't need them.
	glfw.SetWindowSizeCallback(onResize)
	glfw.SetWindowCloseCallback(onClose)
	glfw.SetMouseButtonCallback(onMouseBtn)
	glfw.SetMouseWheelCallback(onMouseWheel)
	glfw.SetKeyCallback(onKey)
	glfw.SetCharCallback(onChar)

	// Start loop
	running := true
	for running {
		// OpenGL rendering goes here.

		// Swap front and back rendering buffers. This also implicitly calls
		// glfw.PollEvents(), so we have valid key/mouse/joystick states after
		// this. This behavior can be disabled by calling glfw.Disable with the
		// argument glfw.AutoPollEvents. You must be sure to manually call
		// PollEvents() or WaitEvents() in this case.
		glfw.SwapBuffers()

		// Break out of loop when Escape key is pressed, or window is closed.
		running = glfw.Key(glfw.KeyEsc) == 0 && glfw.WindowParam(glfw.Opened) == 1
	}
}

func (o *OpenGl) Init() {
	if err := glfw.Init(); err != nil {
		fmt.Fprintf(os.Stderr, "glfw: %s\n", err)
		return
	}
	defer glfw.Terminate()

	if err := glfw.OpenWindow(o.width, o.height, 0, 0, 0, 0, 16, 0, glfw.Windowed); err != nil {
		fmt.Fprintf(os.Stderr, "glfw: %s\n", err)
		return
	}
	defer glfw.CloseWindow()

	glfw.SetSwapInterval(1)
	glfw.SetWindowTitle(o.title)

	if err := gl.Init(); err != nil {
		fmt.Fprintf(os.Stderr, "gl: %s\n", err)
	}

	glfw.SetKeyCallback(glfw.KeyHandler(o.keyboard))
	glfw.SetMouseButtonCallback(glfw.MouseButtonHandler(o.mouseClick))
	glfw.SetMousePosCallback(glfw.MousePosHandler(o.mouseMove))
	glfw.SetMouseWheelCallback(glfw.MouseWheelHandler(o.mouseWheel))

	if err := o.initScene(); err != nil {
		fmt.Fprintf(os.Stderr, "init: %s\n", err)
		return
	}

	for glfw.WindowParam(glfw.Opened) == 1 {
		gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)

		if o.display3d != nil {
			o.set3dView()
			o.display3d()
		}
		if o.display2d != nil {
			o.set2dView()
			o.display2d()
		}

		glfw.SwapBuffers()
		time.Sleep(20 * time.Millisecond)
		//<-o.redisplay
	}
}

func main() {
	flag.Parse()

	if *cpuprofile != "" {
		f, err := os.Create(*cpuprofile)
		if err != nil {
			log.Fatal(err)
		}

		pprof.StartCPUProfile(f)
		defer pprof.StopCPUProfile()
	}

	if err := readModel(); err != nil {
		log.Fatal(err)
	}

	if err := glfw.Init(); err != nil {
		log.Fatal(err)
	}
	defer glfw.Terminate()

	glfw.OpenWindowHint(glfw.WindowNoResize, 1)

	if err := glfw.OpenWindow(Width, Height, 0, 0, 0, 0, 16, 0, glfw.Windowed); err != nil {
		log.Fatal(err)
		return
	}
	defer glfw.CloseWindow()

	glfw.SetSwapInterval(1)
	glfw.SetWindowTitle(Title)
	glfw.SetKeyCallback(onKey)

	if err := gl.Init(); err != nil {
		log.Fatal(err)
	}

	initScene()
	defer destroyScene()

	for glfw.WindowParam(glfw.Opened) == 1 {
		applyMove()
		drawScene()
		glfw.SwapBuffers()
	}
}

func main() {

	// Setup the window

	if err := glfw.Init(); err != nil {
		fmt.Fprintf(os.Stderr, "glfw: %s\n", err)
		return
	}
	// Close glfw at the end of main()
	defer glfw.Terminate()

	// Set window properties
	glfw.OpenWindowHint(glfw.WindowNoResize, 0)
	//glfw.OpenWindowHint(glfw.OpenGLForwardCompat, gl.TRUE)
	glfw.OpenWindowHint(glfw.OpenGLDebugContext, gl.TRUE)

	// Actually open the window
	if err := glfw.OpenWindow(initial_width, initial_height, 0, 0, 0, 0, 16, 0, glfw.Windowed); err != nil {
		fmt.Fprintf(os.Stderr, "glfw: %s\n", err)
		return
	}

	// Close the window at the end of main()
	defer glfw.CloseWindow()

	// Only swap buffer once/ draw cycle (30 or 60 fps)
	glfw.SetSwapInterval(1)
	glfw.SetWindowTitle(Title)

	// Apply those settings
	if err := gl.Init(); err != nil {
		fmt.Fprintf(os.Stderr, "gl: %s\n", err)
	}

	// While glfw.Opened is 1 (the window is open), keep swapping buffers
	for glfw.WindowParam(glfw.Opened) == 1 {

		glfw.SwapBuffers()
	}

	setCallbacks()

	// Initialize the openGL settings
	Initialize()
}

func main() {
	log.Printf("Starting glfw window")

	err := glfw.Init()
	if err != nil {
		log.Fatalf("Error while starting glfw library: %v", err)
	}
	defer glfw.Terminate()

	err = glfw.OpenWindow(256, 256, 8, 8, 8, 0, 0, 0, glfw.Windowed)
	if err != nil {
		log.Fatalf("Error while opening glfw window: %v", err)
	}
	defer glfw.CloseWindow()

	glfw.SetSwapInterval(1) //vsync on

	glfw.SetWindowTitle("Colored Triangle")

	InitGL()

	glfw.SetWindowSizeCallback(func(w, h int) { InitGLWindow(w, h) })
	glfw.SetKeyCallback(func(key, state int) { HandleKey(key, state) })

	// create a mesh with 3 vertices (a triangle)
	m := &Mesh{make([]*Vector, 3)}
	m.V[0] = &Vector{0, 1, 0, color.NRGBA{1, 0, 0, 0}}
	m.V[1] = &Vector{-1, -1, 0, color.NRGBA{0, 1, 0, 0}}
	m.V[2] = &Vector{1, -1, 0, color.NRGBA{0, 0, 1, 0}}

	run := true
	for run && glfw.WindowParam(glfw.Opened) == 1 {
		select {
		case exitCode := <-exit:
			log.Printf("Received exit code: %d", exitCode)
			run = false
		default:
			Draw(m)
		}
	}
}

func main() {
	fmt.Println("OpenGL Programming/Modern OpenGL Introduction")
	fmt.Println("Tutorial taken from http://en.wikibooks.org/wiki/OpenGL_Programming/Modern_OpenGL_Introduction")

	var err error
	err = glfw.Init()
	if err != nil {
		fmt.Printf("GLFW: %s\n", err)
		return
	}
	defer glfw.Terminate()

	glfw.OpenWindowHint(glfw.OpenGLVersionMajor, 3)
	glfw.OpenWindowHint(glfw.OpenGLVersionMinor, 3)
	glfw.OpenWindowHint(glfw.OpenGLProfile, 1)

	err = glfw.OpenWindow(ScreenWidth, ScreenHeight, 0, 0, 0, 0, 0, 0, glfw.Windowed)
	if err != nil {
		fmt.Printf("GLFW: %s\n", err)
		return
	}
	defer glfw.CloseWindow()

	glfw.SetWindowTitle(WindowTitle)

	// Init extension loading
	err = gl.Init()
	if err != nil {
		fmt.Printf("Init OpenGL extension loading failed with %s.\n", err)
	}

	initResources()

	// Render loop
	for glfw.WindowParam(glfw.Opened) == 1 {
		display()
	}

	// Free resources
	free()
}

func main() {

	flag.Parse()

	var done bool

	var err os.Error
	if err = glfw.Init(); err != nil {
		fmt.Fprintf(os.Stderr, "[e] %v\n", err)
		return
	}

	defer glfw.Terminate()

	if err = glfw.OpenWindow(300, 300, 0, 0, 0, 0, 0, 0, glfw.Windowed); err != nil {
		fmt.Fprintf(os.Stderr, "[e] %v\n", err)
		return
	}

	if gl.Init() != 0 {
		panic("gl error")
	}

	defer glfw.CloseWindow()

	glfw.SetWindowTitle("gears")

	glfw.SetWindowSizeCallback(reshape)

	init_()
	reshape(300, 300)
	done = false
	for !done {
		idle()
		draw()
		done = glfw.Key(glfw.KeyEsc) != 0 || glfw.WindowParam(glfw.Opened) == 0
	}

}

func main() {
	var err os.Error
	if err = glfw.Init(); err != nil {
		fmt.Fprintf(os.Stderr, "%v\n", err)
		return
	}

	// Ensure glfw is cleanly terminated on exit.
	defer glfw.Terminate()

	if err = glfw.OpenWindow(300, 300, 0, 0, 0, 0, 0, 0, glfw.Windowed); err != nil {
		fmt.Fprintf(os.Stderr, "%v\n", err)
		return
	}

	// Ensure window is cleanly closed on exit.
	defer glfw.CloseWindow()

	// Enable vertical sync on cards that support it.
	glfw.SetSwapInterval(1)

	// Set window title
	glfw.SetWindowTitle("Simple GLFW window")

	running := true
	for running {
		// OpenGL rendering goes here.

		// Swap front and back rendering buffers. This also implicitly calls
		// glfw.PollEvents(), so we have valid key/mouse/joystick states after
		// this. This behavior can be disabled by calling glfw.Disable with the
		// argument glfw.AutoPollEvents. You must be sure to manually call
		// PollEvents() or WaitEvents() in this case.
		glfw.SwapBuffers()

		// Break out of loop when Escape key is pressed, or window is closed.
		running = glfw.Key(glfw.KeyEsc) == 0 && glfw.WindowParam(glfw.Opened) == 1
	}
}