Spring RTS Engine

I looked through the wiki and FAQ but couldnt find this, so is it possible to have more than one sun in the sky? And perhaps have multiple shadows off units/trees/stuff?

That would be sweet!

No, we do not have support for multiple suns, but the topic has been brought up before on several occasions.

would this not consume gpu on my video card?

You could use a cubemap with two suns, only problem is you can only have one shadow in one direction, for obvious reasons, so you might want to specify a sun direction thats directly above the map, this way it won`t look too strange for people with graphics cards that support shadows.

If you thought turning on shadows slowed things down, imagine it x2. Not possible with common hardware.