[GEM-dev] Some newbie questions (sorry)

Hello,

There is something i dont understand in the gem framebuffer handling. It seems that the frame is cleared, projection reinitialised for each frame. Is that normal ? I personnally want to use precedent images and viewing transformations, is there a way to avoid that ? I've tried to look inside the code but i dont see any glClear commend that could explain that.

I'd also like to code some externals, but i cant figure out the overall gem structure. Is there somewhere a description of the internal structure of Gem ?

this question may be the consequence of my gem ignorance but: why can i find a render object (id like to do multipass rendering, usefull to set render to texture features)

Thanx for the Help Ronan