Exemplo n.º 1
0
func (s *Display) init(title string, screenSizeMultiplier int) error {
	s.Name = PREFIX + "-SCREEN"

	log.Printf("%s: Initialising display", s.Name)
	var err error

	s.ScreenSizeMultiplier = screenSizeMultiplier
	log.Printf("%s: Set screen size multiplier to %dx", s.Name, s.ScreenSizeMultiplier)

	glfw.OpenWindowHint(glfw.WindowNoResize, 1)
	err = glfw.OpenWindow(SCREEN_WIDTH*s.ScreenSizeMultiplier, SCREEN_HEIGHT*s.ScreenSizeMultiplier, 0, 0, 0, 0, 0, 0, glfw.Windowed)
	if err != nil {
		return err
	}

	glfw.SetWindowTitle(title)

	//resize function
	onResize := func(w, h int) {
		gl.Viewport(0, 0, w, h)
		gl.MatrixMode(gl.PROJECTION)
		gl.LoadIdentity()
		gl.Ortho(0, float64(w), float64(h), 0, -1, 1)
		gl.ClearColor(0.255, 0.255, 0.255, 0)
		gl.Clear(gl.COLOR_BUFFER_BIT)
		gl.MatrixMode(gl.MODELVIEW)
		gl.LoadIdentity()
	}

	glfw.SetWindowSizeCallback(onResize)
	desktopMode := glfw.DesktopMode()
	glfw.SetWindowPos((desktopMode.W-SCREEN_WIDTH*s.ScreenSizeMultiplier)/2, (desktopMode.H-SCREEN_HEIGHT*s.ScreenSizeMultiplier)/2)

	gl.ClearColor(0.255, 0.255, 0.255, 0)

	return nil

}
Exemplo n.º 2
0
func (w *glfwBackend) Open(width, height, zoom int, fs bool, font *FontData) {
	if err := glfw.Init(); err != nil {
		panic(err)
	}

	w.font = font
	w.zoom = zoom
	w.width = width
	w.height = height

	var fwidth = width * font.CellWidth * zoom
	var fheight = height * font.CellHeight * zoom
	var twidth = fwidth
	var theight = fheight

	flag := glfw.Windowed
	if fs {
		flag = glfw.Fullscreen
		dm := glfw.DesktopMode()
		twidth = dm.W
		theight = dm.H
	}

	glfw.OpenWindowHint(glfw.WindowNoResize, gl.TRUE)
	err := glfw.OpenWindow(twidth, theight, 8, 8, 8, 8, 0, 0, flag)
	if err != nil {
		panic(err)
	}

	w.key = NOKEY
	glfw.SetWindowCloseCallback(func() int { w.Close(); return 0 })
	glfw.SetKeyCallback(func(key, state int) { w.setKey(key, state) })
	glfw.SetCharCallback(func(key, state int) { w.setKey(key, state) })
	glfw.Enable(glfw.KeyRepeat)

	w.mouse = new(MouseData)
	glfw.Enable(glfw.MouseCursor)
	glfw.SetMousePosCallback(func(x, y int) { w.mouseMove(x, y) })
	glfw.SetMouseButtonCallback(func(but, state int) { w.mousePress(but, state) })
	glfw.Enable(glfw.MouseCursor)

	xoff := float32(twidth-fwidth) / 2.0
	yoff := float32(theight-fheight) / 2.0

	fc := float32(font.CellWidth * zoom)
	fch := float32(font.CellHeight * zoom)
	for y := 0; y < height; y++ {
		for x := 0; x < width; x++ {
			cx := xoff + float32(x)*fc
			cy := yoff + float32(y)*fch
			w.verts = append(w.verts, cx, cy, cx, cy+fch, cx+fc, cy+fch, cx+fc, cy)
		}
	}

	runtime.LockOSThread()
	glInit(twidth, theight)

	m := font.Image.(*image.RGBA)
	w.s = float32(font.CellWidth) / float32(m.Bounds().Max.X)
	w.t = float32(font.CellHeight) / float32(m.Bounds().Max.Y)
	textures = make([]gl.Uint, 2)
	gl.GenTextures(2, &textures[0])

	gl.BindTexture(gl.TEXTURE_2D, textures[0])
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.Sizei(m.Bounds().Max.X), gl.Sizei(m.Bounds().Max.Y), 0, gl.RGBA, gl.UNSIGNED_BYTE, gl.Pointer(&m.Pix[0]))

	m = image.NewRGBA(image.Rect(0, 0, font.CellWidth, font.CellHeight))
	draw.Draw(m, m.Bounds(), &image.Uniform{White}, image.ZP, draw.Src)
	gl.BindTexture(gl.TEXTURE_2D, textures[1])
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.Sizei(m.Bounds().Max.X), gl.Sizei(m.Bounds().Max.Y), 0, gl.RGBA, gl.UNSIGNED_BYTE, gl.Pointer(&m.Pix[0]))

	w.open = true
}