func main() { var window *sdl.Window var renderer *sdl.Renderer var texture *sdl.Texture var src, dst sdl.Rect var err error window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED, winWidth, winHeight, sdl.WINDOW_SHOWN) if err != nil { fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err) os.Exit(1) } defer window.Destroy() renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED) if err != nil { fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err) os.Exit(2) } defer renderer.Destroy() image, err := img.Load(imageName) if err != nil { fmt.Fprintf(os.Stderr, "Failed to load PNG: %s\n", err) os.Exit(3) } defer image.Free() texture, err = renderer.CreateTextureFromSurface(image) if err != nil { fmt.Fprintf(os.Stderr, "Failed to create texture: %s\n", err) os.Exit(4) } defer texture.Destroy() src = sdl.Rect{0, 0, 512, 512} dst = sdl.Rect{100, 50, 512, 512} renderer.Clear() renderer.SetDrawColor(255, 0, 0, 255) renderer.FillRect(&sdl.Rect{0, 0, int32(winWidth), int32(winHeight)}) renderer.Copy(texture, &src, &dst) renderer.Present() sdl.Delay(2000) }