Re: Non-square clipmaps
Michael A. Coleman (mcoleman++at++txdirect.net)
Tue, 10 Mar 1998 14:20:48 -0600
Dan Brockway wrote:
>
> Kenavo,
>
> Michael is right. You can populate part of the square clip map
> definition. Your sub set area need not be a power of two, just a
> multiple of your tile size.
>
> You will need to create a border of tiles outside the area you plan to
> use. This border will ensure that as your clip center moves to the edge
> of your defined area, that there are texels to fill the clip area at
> each level.
>
> So for example, If you clip_size is 1024 then as the clip center gets to
> the edge, 512 the clip area will be hanging off the populated area by
> 512 texels. So add a border tile to every level. The contents of the
> border tiles can be a symbolic link to any other tile. This will use up
Yep, this is what we did. Saves quite a bit of disk space.
MAC
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