Off screen sprite clipping

cocos2d-x C++
#1

Are offscreen regions of sprites automatically clipped or do i need to manually set a draw rectangle?

For example, I have a large texture/sprite in my background but half of it is offscreen. Will cocos2dx/openGL ignore the offscreen pixels?

Many thanks

#2

I believe it does not clip the large sprite. Say you have a sprite sized 960x640 and your screen size is 480x320, you’d still get 960x640 as the size of the sprite.

#3

Thanks Lance, so in terms of rendering performance it would be better to manually clip the sprite?

#4

If you’re not going to use the off-screen sprites then it’s better to import them already clipped. In my case, I still have use for the off-screen part of the sprite since I panning/moving them in and out of the screen.

#5

IIRC OpenGL automatically clips viewport, but you should still uses smaller version, since it will use lower memory footprint

#6

Thanks Hao, thats answers my question.

Lance, I’m doing something similar with scrolling backgrounds so the whole texture is needed.

Thanks again guys.