RE: [Algorithms] Rendering (a portion of) a Plane

[Steve W. <Ste...@im...>]

I'm sorry if this doesn't make sense today...being a programmer from MSDOS
days, but when I needed a timer I looked at the Real Time Clock (RTC) memory
addresses.  I don't remember the exact memory locations, but it's in the
same place on all PC's, and is the most stable and detailed (.1 millisecond
ticks).  Is there some security reason that we can't access it now? (Forgive
me for not being able to test it, but since Microsoft removed support for
MASM I haven't been able to code anything with assembler). It just doesn't
make any sense that "reading" the RTC would be sooooo buggy.

R&R

> -----Original Message-----
> From: Steve Wood 
> Sent: Friday, July 21, 2000 2:58 PM
> To: 'gda...@li...'
> Subject: RE: [Algorithms] Rendering (a portion of) a Plane
> 
> 
> Oh...then set up a culling rectangle that is smaller than 
> your viewport.
> Where did you see the extraction of clipping planes so you 
> can see around
> them? What you saw may not be used in the way you want it to be
> implemented...but there is always a first.  
> 
> R&R
> 
> > From: Jeremy Bake [mailto:Jer...@in...]
> > 
> > Actually what I'm more after is all these frustum culling routines
> > I've seen lately that extract the clipping planes from the
> > modelview and projection matrices I'd like to be able to 
> extract these
> > draw them (at least a portion since a plane goes to infinity)
> > and move my eye position elsewhere to test if things really 
> > are getting
> > culled outside (I learn better when I can observe what's happening
> > visually, dunno I just have a hard time trusting my code... 
> > I'd lie to know 
> > I'm going in the right direction before getting in too deep)
> > even an example of how to draw a few points on the plane so I 
> > can see it 
> > visually would be great... is that a better description of 
> > what I'm going for?
> > 
> 
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