how is VRAM purged/cleared?

[Keith W. <kw...@cs...>]

I understand that by creating and submitting trimesh objects and textures
that Quesa "talks to" VRAM and fills it up with necessary models and
textures and lighting information and whatnot, so that when I tell it to
render a frame it has what it needs to do the job.

Imagine that I have a large terrain based world and as I wander around I
load in part of the map that the user wanders into and purge parts the
user wanders away from.

How do I remove stuff from VRAM that I don't need anymore because the user
has wandered far enough away from an object and its texture?  Is VRAM
automatically on some sort of LRU memory management scheme or do I have to
intentionally clear space for new stuff?

________________________________________________________________________
Keith Wiley                                kw...@cs...
http://www.unm.edu/~keithw                 http://www.mp3.com/KeithWiley

"Yet mark his perfect self-contentment, and hence learn his lesson,
that to be self-contented is to be vile and ignorant, and that to
aspire is better than to be blindly and impotently happy."
                                           --  Edwin A. Abbott, Flatland
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