Why does the engine occupy GPU abnormally high

[luqb]

Why does the engine occupy GPU abnormally high, even if there is no content, it is more than ten times higher compared to the browser
为什么引擎占用GPU会异常的高，即使没有任何内容，与浏览器相比高了十多倍

[hajimehoshi]

Use English

[hajimehoshi]

Why does the engine occupy GPU abnormally high, even if there is no content, it is more than ten times higher compared to the browser

An Ebitengine application redraws the entier window every frame as typical games, while your browser does not. That's why

[luqb]

The browser is running a game, while the tested program only has one img background

[hajimehoshi]

What if the browser is focused?

[luqb]

Thank you.web Even in the focused state, it is only 0.3 to 0.9

[luqb]

I really like the simplicity of this project, but what confuses me is that it takes up too much even without any content. Because I want to run smoothly with low power consumption even on low-end devices

[hajimehoshi]

There might be a great hack in browsers, which Ebitengine doesn't have, but I don't have good insights.

[luqb]

The demo is also the same, even if TPS is set to 10, there is no decrease

[realskyquest]

does SetScreenClearedEveryFrame changes anything?

[hajimehoshi]

Yes, this can affect GPU usages

[luqb]

func main() {
	ebiten.SetWindowSize(screenWidth, screenHeight)
	ebiten.SetWindowTitle("小游戏")
	ebiten.SetTPS(10)
	ebiten.SetScreenClearedEveryFrame(false)
	ebiten.SetVsyncEnabled(true)
	game := scene.NewGame()
	game.SetScene(&scene.WelcomeScene{
		ScreenHeight: screenHeight,
		ScreenWidth:  screenWidth,
	})
	if err := ebiten.RunGame(game); err != nil {
		log.Fatal(err)
	}
}