Re: BACK_TO_FRONT sorting and 'Inverse Singular Matrix'

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Angus Dorbie (dorbie++at++sgi.com)
Wed, 06 Jan 1999 18:09:00 -0800

Angus Dorbie wrote:
>
> Angus Dorbie wrote:
> >
> > You sure there isn't a culprit DCS in the graph with a singular matrix,
> > for example shadows on the ground with a zero scaling factor in Z?
> >
> > FYI this would cause z fighting which wouldn't be solved by sorting.
> > It's a different class of problem.
> >
> > What machine are you using?
> >
> > Also for sort to look good you need the objects with transparency to be
> > split up at the granularity of potential occlusion. Sorting only happens
> > on geosets so objects which potentially occlude each other need to be is
>
> in^^

Ahhhhgghh, this "in" should be at the and of the line,
it got whacked by the mailer

Sorting only happens on geosets so objects which potentially occlude
each other need to be in separate geosets.

Cheers,Angus.

>
> in^^
>
> > separate geosets. You chould also consider the centroid & size of these
> > objects, a simple depth sort will not work if objects overlap
> > significantly on some axis w.r.t. their rize
> size ^^^^
>
> >
> > Cheers,Angus.

-- 
"Only the mediocre are always at their best." -- Jean Giraudoux 


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