Caelum 0.4 fps impact !

Hi
Caelum 0.4 have very fps impact, specially in day times, the impact is random on time. the fps impact is about ~150 FPS and slow down my scene FPS from ~178 to near ~24 !!!
Other people(Vectrex) also was mentioned to it.
Thanks.

I'm sorry Caelum is slow for you. How does the demo run?

I'm sorry Caelum is slow for you. How does the demo run?
About ~1-2 days.
in night, FPS is ok all time, but in day the FPS take down randomize.
Thank you for your attention.

actually, I don't have that slowdown. I mentioned in another thread that setting a large enough farclip for the plane clouds caused slowdown. That's why I hacked dome clouds back in my version

Try running in fullscreen without through VS and see if it does it. I know I get totally erratic fps in windowed mode

Caelum uses and activates/deactivates 2 lights (sun / moon). If you have many per light iterations (for shadow casting ? for shaders ?), then at the time when there is both: the sun and the moon visible, you have twice that much shader / rendering iterations. Maybe that is your case ?

You can tell it to only ever use the brightest light.
caelumSystem->setEnsureSingleLightSource(true);
caelumSystem->setEnsureSingleShadowSource(true);

Thank you for your replys and information.