Jan Barglowski (jan++at++archimedes.vislab.navy.mil)
Tue, 14 Apr 1998 09:26:14 -0700 (PDT)
I have a 3-pipe App using a cliptexture on the terrain. I've replaced
the clip-center algorithm with my own, but it affects the centering
on all 3 pipes the way I want it to affect only the center pipe.
According to the pfManual, I can "split" the MPCliptextures into
Master and Slave cliptextures, which share varying degrees of system
resources with each other. I'd like to use this, but can't seem to
grasp how I should go about it!
First, I only have one pfMPClipTexture -- at least I've only defined
one! I'm guessing all the pipes share this one from the pfuAddMPClip-
TexturesToPipes() function. So how can I split off slave MPClipTextures?
I've already tried to use the pfMPClipTexture::setShareMask(0) to
signify no sharing of the centering, but that doesn't seem to work,
either. Interesting that the man page states that only clipcenter
sharing can be enabled/disabled...
If it aids, what I'm doing is shifting the clip center so that it
coincides with the "bottom" of my current FOV. This has the result
of putting higher res mip-levels (or at least loading them!) so
that is appears sharper where I'm looking, rather than directly
underneath me. Of course, this depends on the channel's viewmat
so I must update the clipcenter based on each channel (I have one
channel per pipe). Unfortunately, the sharing causes me only to
set the clipcenter for the center channel, and the other two channels
are getting it's center.
Any hints? Thanks!
jan
--
Jan Anthony Barglowski jan++at++chinalake.navy.mil
Real-time Computer Graphics http://www1.ridgecrest.ca.us/~jan
Naval Air Warfare Center, China Lake (760) 927-1057
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