i have some weird mystic bug this time. when in deffered rendering mode with ssao enabled some meshes dissapear when frustrum culled but won't ever show up again when camera turns back to them. this doesn't happen in forward rendering or in deferred with ssao disabled. when not frustrum culling with ssao enabled it also works ok. looks like not rendering them makes them disappear forever. opengl desn't report errors. I've been trying to track it down for 2 days with no luck any hints?