[Flightgear-devel] Performance and 3d cloud switch

[Renk T. <tho...@jy...>]

A report of performance dramatically improving for advanced weather when 3d clouds are switched off in the rendering menu (you still get to see 3d clouds) 

http://www.flightgear.org/forums/viewtopic.php?f=69&t=16630&start=30#p189983

I've played around with this, and I can't reproduce any significant framerate difference. It is true that the cloud effect file doesn't condition on the 3d cloud switch at all, so Advanced Weather generates 3d clouds no matter what you select here (it can't do 2d clouds at all) - which may be a little confusing, but I have no good idea how to handle this gracefully. Maybe the switch should go away from rendering to the Basic Weather GUI? But that's a side issue.

I have no idea where any performance increase might be coming from though - as far as I know, the shaders are completely unaware of this. Can anyone reproduce the finding? Stuart, any idea where this could come from?

* Thorsten