Golang sdl.GetError函数代码示例

func initSDL() {
	if sdl.Init(sdl.INIT_VIDEO) != 0 {
		panic(sdl.GetError())
	}

	if ttf.Init() != 0 {
		panic(sdl.GetError())
	}

	font := ttf.OpenFont("testdata/VeraMono.ttf", 20)

	if font == nil {
		panic(sdl.GetError())
	}

	appSurface = sdl.SetVideoMode(640, 480, 32, 0)
	sdlrenderer = NewSDLRenderer(sdl.CreateRGBSurface(sdl.SRCALPHA, 640, 480, 32, 0, 0, 0, 0), font)
	sdlrenderer.GetSurface().SetAlpha(sdl.SRCALPHA, 0xaa)
	console = NewConsole(nil)

	go func() {
		for {
			select {
			case rects := <-sdlrenderer.UpdatedRectsCh():
				render(rects)
			}

		}
	}()

	render(nil)
}

func main() {
	if sdl.Init(sdl.INIT_VIDEO) != 0 {
		panic(sdl.GetError())
	}

	defer sdl.Quit()

	screen := sdl.SetVideoMode(400, 300, 32, 0)
	if screen == nil {
		panic(sdl.GetError())
	}

	sdl.WM_SetCaption("Template", "")

	ticker := time.NewTicker(1e9 / 2 /*2 Hz*/)

loop:
	for {
		select {
		case <-ticker.C:
			// Note: For better efficiency, use UpdateRects instead of Flip
			screen.FillRect(nil /*color*/, rand.Uint32())
			//screen.Blit(&sdl.Rect{x,y, 0, 0}, image, nil)
			screen.Flip()

		case event := <-sdl.Events:
			fmt.Printf("%#v\n", event)

			switch event.(type) {
			case sdl.QuitEvent:
				break loop
			}
		}
	}
}

func main() {
	if sdl.Init(sdl.INIT_VIDEO) < 0 {
		fmt.Printf(
			"Video initialization failed: %s\n",
			sdl.GetError())
		quit_tutorial(1)
	}
	info := sdl.GetVideoInfo()
	if info == nil {
		fmt.Printf(
			"Video query failed: %s\n",
			sdl.GetError())
		quit_tutorial(1)
	}
	width := 640
	height := 480
	bpp := int(info.Vfmt.BitsPerPixel)
	sdl.GL_SetAttribute(sdl.GL_RED_SIZE, 5)
	sdl.GL_SetAttribute(sdl.GL_GREEN_SIZE, 5)
	sdl.GL_SetAttribute(sdl.GL_BLUE_SIZE, 5)
	sdl.GL_SetAttribute(sdl.GL_DEPTH_SIZE, 16)
	sdl.GL_SetAttribute(sdl.GL_DOUBLEBUFFER, 1)
	flags := uint32(sdl.OPENGL | sdl.FULLSCREEN)
	if sdl.SetVideoMode(width, height, bpp, flags) == nil {
		fmt.Printf("Video mode set failed: %s\n", sdl.GetError())
		quit_tutorial(1)
	}
	setup_opengl(width, height)
	for {
		process_events()
		draw_screen()
	}
	os.Exit(0)
}

func main() {
	if sdl.Init(sdl.INIT_EVERYTHING) != 0 {
		panic(sdl.GetError())
	}

	defer sdl.Quit()

	screen := sdl.SetVideoMode(640, 480, 32, sdl.SWSURFACE)
	if screen == nil {
		panic(sdl.GetError())
	}

	sdl.WM_SetCaption("Hello World", "test.png")

	message := load_image("hello.bmp")
	background := load_image("background.bmp")

	apply_surface(0, 0, background, screen)
	apply_surface(320, 0, background, screen)
	apply_surface(0, 240, background, screen)
	apply_surface(320, 240, background, screen)

	apply_surface(180, 140, message, screen)

	message.Free()
	background.Free()

	screen.Flip()
	sdl.Delay(2000)

}

func newSDL2xScreen(fullScreen bool) *sdl2xScreen {
	sdlMode := uint32(sdl.SWSURFACE)
	if fullScreen {
		application.Logf("%s", "Activate fullscreen mode")
		sdlMode = sdl.FULLSCREEN
		sdl.ShowCursor(sdl.DISABLE)
	}
	screenSurface := &sdlSurface{sdl.SetVideoMode(SCREEN_WIDTH*2, SCREEN_HEIGHT*2, 32, sdlMode)}
	if screenSurface.surface == nil {
		log.Printf("%s", sdl.GetError())
		application.Exit()
		return nil
	}
	borderSurface := &sdlSurface{sdl.CreateRGBSurface(sdl.SWSURFACE, SCREEN_WIDTH*2, SCREEN_HEIGHT*2, 32, 0, 0, 0, 0)}
	if borderSurface.surface == nil {
		log.Printf("%s", sdl.GetError())
		application.Exit()
		return nil
	}
	displaySurface := &sdlSurface{sdl.CreateRGBSurface(sdl.SWSURFACE, DISPLAY_WIDTH*2, DISPLAY_HEIGHT*2, 32, 0, 0, 0, 0)}
	if displaySurface.surface == nil {
		log.Printf("%s", sdl.GetError())
		application.Exit()
		return nil
	}
	return &sdl2xScreen{screenSurface, borderSurface, displaySurface}
}

func initTest() {
	if sdl.Init(sdl.INIT_VIDEO) != 0 {
		panic(sdl.GetError())
	}

	if ttf.Init() != 0 {
		panic(sdl.GetError())
	}

	font = ttf.OpenFont("../testdata/VeraMono.ttf", 12)

	if font == nil {
		panic(sdl.GetError())
	}

	appSurface = sdl.SetVideoMode(appSurfaceW, appSurfaceH, 32, 0)
	gopher = sdl.Load("../testdata/gopher.jpg")

	sdlrenderer := clingon.NewSDLRenderer(sdl.CreateRGBSurface(sdl.SRCALPHA, int(consoleW), int(consoleH), 32, 0, 0, 0, 0), font)
	sdlrenderer.GetSurface().SetAlpha(sdl.SRCALPHA, 0xaa)

	newRenderingLoop(sdlrenderer)

	console = clingon.NewConsole(&Echoer{})
	console.SetRenderer(sdlrenderer)
	console.Print("Welcome to the CLIngon shell!\n\n")
}

func LoadImage(name string) *sdl.Surface {
	image := sdl.Load(name)
	if image == nil {
		panic(sdl.GetError())
	}
	return image
}

func (v *Video) Init(t <-chan []int, d <-chan []int, n string) {
	if sdl.Init(sdl.INIT_EVERYTHING) != 0 {
		log.Fatal(sdl.GetError())
	}

	v.screen = sdl.SetVideoMode(512, 480, 32, 0)

	if v.screen == nil {
		log.Fatal(sdl.GetError())
	}

	sdl.WM_SetCaption(fmt.Sprintf("Fergulator - %s", n), "")

	v.tick = t
	v.debug = d
}

func NewSDLRenderer(surface *sdl.Surface, font *ttf.Font) *SDLRenderer {
	renderer := &SDLRenderer{
		Color:          sdl.Color{255, 255, 255, 0},
		visibleSurface: surface,
		Font:           font,
		eventCh:        make(chan interface{}),
		updatedRectsCh: make(chan []sdl.Rect),
		updatedRects:   make([]sdl.Rect, 0),
		width:          uint(surface.W),
		height:         uint(surface.H),
	}

	fontWidth, fontHeight, err := font.SizeText("A")
	if err != 0 {
		panic("failed to determine font dimensions: " + sdl.GetError())
	}

	renderer.fontWidth = uint(fontWidth)
	renderer.fontHeight = uint(fontHeight)

	renderer.lastVisibleLine = (renderer.height / renderer.fontHeight) * MAX_INTERNAL_SIZE_FACTOR

	renderer.internalSurfaceHeight = uint(renderer.fontHeight)
	renderer.internalSurfaceMaxHeight = renderer.height * MAX_INTERNAL_SIZE_FACTOR
	renderer.internalSurface = sdl.CreateRGBSurface(sdl.SWSURFACE,
		int(renderer.width), int(renderer.internalSurfaceHeight), 32, 0, 0, 0, 0)

	renderer.calcCommandLineRect()

	renderer.updatedRects = append(renderer.updatedRects, sdl.Rect{0, 0, uint16(renderer.width), uint16(renderer.height)})

	go renderer.loop()

	return renderer
}

func Draw_Init() {
	if sdl.Init(sdl.INIT_EVERYTHING) != 0 {
		fmt.Println(sdl.GetError())
	}

	//screen = sdl.SetVideoMode(sw, sh, 32, sdl.OPENGL)
	screen = sdl.SetVideoMode(sw, sh, 32, sdl.RESIZABLE)
	if screen == nil {
		return
	}
	var video_info = sdl.GetVideoInfo()

	fmt.Println("HW_available = ", video_info.HW_available)
	fmt.Println("WM_available = ", video_info.WM_available)
	fmt.Println("Video_mem = ", video_info.Video_mem, "kiB")

	surface = sdl.CreateRGBSurface(sdl.HWSURFACE, 500, 500, 32, rmask,
		gmask, bmask, amask)

	surface.FillRect(nil, 0xff00ff00)

	surfaceb = sdl.CreateRGBSurface(sdl.HWSURFACE, 500, 500, 32, rmask,
		gmask, bmask, amask)

	surfaceb.FillRect(nil, 0xffff0000)
}

func StartGraphics(id uint32, update chan *State, move chan MoveMsg, quit chan bool) error {
	var err error

	rc := sdl.Init(sdl.INIT_VIDEO)
	if rc == -1 {
		return errors.New(sdl.GetError())
	}
	disp := sdl.SetVideoMode(800, 600, 32, sdl.OPENGL)
	if disp == nil {
		return errors.New(sdl.GetError())
	}
	winscale = gl.Mul4(gl.Translate(-1, 1, 0), gl.Scale(1./400, -1./300, 1))
	gl.Init()
	gl.ClearColor(1, 1, 1, 1)
	s := new(State)
	ls := time.Now()
	quadBuf = gl.NewBuffer(gl.ARRAY_BUFFER, quadData, gl.STATIC_DRAW)
	prog, err = gl.MakeProgram([]string{vertexShader}, []string{fragmentShader})
	if err != nil {
		log.Fatal(err)
	}
	AddTex("glenda", "glenda.png")
	AddTex("tux", "tux.png")
	i := image.NewRGBA(image.Rect(0, 0, 800, 600))
	texs["black"] = gl.NewTexture2D(i, 0)

	tick := time.Tick(time.Second / 50)
	squit := make(chan bool)
	go ProcessInput(move, quit, squit)
	for {
		select {
		case s = <-update:
			ls = time.Now()
		case <-tick:
			s.Advance(time.Now().Sub(ls))
			ls = time.Now()
			gl.Clear(gl.COLOR_BUFFER_BIT)
			RenderScene(s)
			sdl.GL_SwapBuffers()
		case <-squit:
			return nil
		}
	}
	return nil
}

func newSDLSurface(w, h int) *sdlSurface {
	surface := sdl.CreateRGBSurface(sdl.SWSURFACE, w, h, 32, 0, 0, 0, 0)
	if surface == nil {
		log.Printf("%s", sdl.GetError())
		application.Exit()
		return nil
	}
	return &sdlSurface{surface}
}

func sdlInit(width, height int32) *sdl.Surface {

	var surface = sdl.SetVideoMode(int(width), int(height), 32, sdl.RESIZABLE)

	if surface == nil {
		panic(sdl.GetError())
	}
	return surface
}

func load_image(filename string) *sdl.Surface {
	loadedImage := sdl.Load(filename)
	if loadedImage == nil {
		panic(sdl.GetError())
	}

	optimizedImage := loadedImage.DisplayFormat()
	loadedImage.Free()

	return optimizedImage
}

func NewRacer(levelDir string) (*Racer, error) {
	r := &Racer{cars: make([]*Car, 0)}

	var err error
	if r.obstaclemap, err = LoadImageGray(filepath.Join(levelDir, "velocity.png")); err != nil {
		return nil, err
	}
	if r.heightmap, err = LoadImageGray(filepath.Join(levelDir, "z.png")); err != nil {
		return nil, err
	}

	carSize := 0.02 * float32(screenWidth)
	if r.spriteCarFG, err = NewSprite("data/cars/car1/fg.png", carSize, carSize); err != nil {
		return nil, err
	}
	if r.spriteCarBG, err = NewSprite("data/cars/car1/bg.png", carSize, carSize); err != nil {
		return nil, err
	}

	r.carSize = carSize

	if r.spriteForeground, err = NewSprite(filepath.Join(levelDir, "foreground.png"), screenWidth, screenHeight); err != nil {
		return nil, err
	}
	if r.spriteBackground, err = NewSprite(filepath.Join(levelDir, "background.png"), screenWidth, screenHeight); err != nil {
		return nil, err
	}

	if r.music = mixer.LoadMUS("data/music.ogg"); r.music == nil {
		return nil, errors.New(sdl.GetError())
	}

	if r.font = ttf.OpenFont("data/font.otf", 32); r.font == nil {
		return nil, errors.New(sdl.GetError())
	}

	textWaiting := ttf.RenderUTF8_Blended(r.font, "Waiting for other players. Press space to start....", sdl.Color{0, 0, 255, 0})
	r.spriteWaiting = NewSpriteFromSurface(textWaiting)

	return r, nil
}