Fine displacement goes wierd close up 2004-07-07 - By Morten Bartholdy
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If it dies on you, have you optimized your bsp settings? This is important
for getting highly detailed displaced objects to render, of course also
dependant on your available memory.
Is the object 70K tris after tesselation or before? I have rendered millions
of polys with 2 GB RAM - it may be slow but if I get the bsp right mr just
chews its way through them all.
I am currently rendering an ocean surface in 2K seen from below and fly
closer to it to eventually break through to above the surface, so I have to
render a lot of triangles and make it work. I have a NURBS surface with geo
approx Surface settings at Fine, view dependant, length 0,5 max subdiv limit
4 and displacement Fine, view dependant, length 0,5, subdiv limit max 6, and
it renders fine, although not fast.
I also saw weird triangulation glitches int the closest areas, and believe
me, upping parameters is the only way to fix them.
- Morten
-- -- Original Message -- --
From: "Chris Marshall" <chris@(protected)>
To: <XSI@(protected)>
Sent: Wednesday, July 07, 2004 12:12 PM
Subject: RE: Fine displacement goes wierd close up
> I'm not sure if I've explained it right. When I fly in, the model looks
> fine, then all of a sudden, the triangulation weirdness happens. It's not
> something that is there all the time that is seen only when close-up. It's
> as if a threshold is reached, and the surface suddenly breaks up.
> The object is 70,000 triangles and the max step is 3. If I go above 4, the
> render just dies completely.
>
> Chris
>
> -- --Original Message-- --
> From: owner-xsi@(protected) [mailto:owner-xsi@(protected)]On Behalf
> Of kim aldis
> Sent: Wednesday, July 07, 2004 10:49 AM
> To: XSI@(protected)
> Subject: RE: Fine displacement goes wierd close up
>
>
> It'll be because your max subdivision is clamping the subdivision process
> before it reaches sub-pixel. If you've already got it set to 7 - the
maximum
> Xsi allows - then you'll need to find a way of increasing the polygonal
> detail in your model.
>
> > -- --Original Message-- --
> > From: owner-xsi@(protected)
> > [mailto:owner-xsi@(protected)] On Behalf Of Chris Marshall
> > Sent: 07 July 2004 10:41
> > To: xsi@(protected)
> > Subject: Fine displacement goes wierd close up
> >
> > Hi,
> > I'm using fine displacement on a model, with view dependent
> > on. All looks good until my camera fly's in close, when the
> > displacement breaks up and becomes triangulated.
> > I assume this is something to do with the view dependent
> > option, but is there anything I can do to fix this?
> > Thanks
> >
> > Chris
> >
> >
> > Chris Marshall
> > Senior Animator
> > Eclipse Creative Limited
> > Tel: +44 (0) 29 2047 0070
> > Fax: +44 (0) 29 2047 0071
> > www.eclipsecreative.co.uk
> > www.eclipsecreative.tv
> >
> >
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>
>
>
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