Performance: LightFilter gets applied even if not needed

zzuegg · November 22, 2022, 7:35am

Performance: LightFilter gets applied even if not needed

opened 05:14PM - 21 Nov 22 UTC

Hi, during my investigation on my deferred performance i found that the LightFil…ter gets applied on each RenderManager.renderGeometry() I looked up on how Jme internally works around this issue when no lights are needed and it seems it does not. It surely impacts the performance of the AbstractShadowRenderer. At least on objects outside of the view frustum but inside of the shadow frustum the light filtering is not needed. A quick fix would be to implement: `` tmp = RenderManager.getLightFilter(); RenderManager.setLightFilter(null); //Do your stuff RenderManager.setLightFilter(tmp); `` what do you think? applying the easy fix or implement a fix at global scale?

Just posting this here for visibility.

Here is the short version:

Even if no lights are needed when rendering geometries the WorldLightList still gets filtered. At least the *ShadowRenderer suffer from this.