Hello!!! In a level loaded in my 3dengine i have some hi-poly count static objects. I have that objects in a object manager class that renders that objects. But I also render objects that is not in the camera frustum!This is waste of fps. My Engine has a BSP Tree but the only optimization I have in it is Bounding Box optmimization and I can't discart all the objects that are not in the camera frustum using the BSP Tree. Is there any other way to do this? I was thinking this: before render the actual object render the bounding box or sphere of the object using an occlusion query to see if the object is visible at camera frustum. if yes then draw it. if not then dont draw it. but to do all this stuff i must render the bounding box/sphere first. and the bounding box will appear to the screen! how can I erase that? well I know that you can not just erase something. but there must be some trick to "hide" it. thanks in advance;

thanks for your reply!
well.. about occlusion query speed now...
Am I gonna lose a lot of fps when testing with queries?
is it better from drawing 2000 polygons?

i use them and i have some extra fps because now i dont draw the objects that are behind the walls. :)
In a simple level with some complex geometry I can discart 30.000 - 40.000 vertices whitch is behind the walls. :)