I've seen some games do a LOD refresh every half a second but what you've got to bear in mind is that if you do do something like that, is that particular frame going to lag?
A better but more difficult option is to check half the scene every frame, causing a full LOD refresh every other frame but spreading the load more evenly. Obviously this then extends to checking a tenth of the screen every frame for a full update in ten frames.
You would have to have a very specific reason for going to all that trouble of course :)
A better but more difficult option is to check half the scene every frame, causing a full LOD refresh every other frame but spreading the load more evenly. Obviously this then extends to checking a tenth of the screen every frame for a full update in ten frames.
You would have to have a very specific reason for going to all that trouble of course :)