 | | | Calling Kim - displacement problems! | Calling Kim - displacement problems! 2004-06-09 - By Sandy Sutherland
Back
Thanks Kim - this is basically what we have - the length is defined by the
amounts specified in the change range node for the height of the displacement.
I just seem to remember there being some discussion about using LDA settings
instead - maybe I had a dream or something.......burble burble!!
S.
-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- -----
Sandy Sutherland Digital Doodeller/Technical Director
The Refinery (Cape) http://www.refinery.co.za
mailto:sandy@(protected)
(P) (+27 21) 480 3132 (F) (+27 21) 480 3101
-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- -----
-- -- Original Message -- --
From: kim aldis
To: XSI@(protected)
Sent: Wednesday, June 09, 2004 4:57 PM
Subject: RE: Calling Kim - displacement problems!
The only time I've had crashes is when the mesh pretty much fills screen and
the detail is high, in other words, when there's loads of polys. We were also
using GI and I always figured it was memory.
The key is to use view dependant, this way you generate as much detail as you
need for any given frame and no more. It's just more efficient.
Basic settings, though;
Use fine, view dependancy on. Length is the maximum length to which polys
will be subdivided, measured in pixel diagonals, so set it to somewhere between
0.2 and 3, depending on the sharpness of the detail you need - very fine,
straight line stuff, set it low, smoother stuff, set it high. The max subdee
you should set as high as it'll let you - it's clamped by the length parameter.
That's about it, really. If you're having problems, start with a high length
and work down. Better to do this than lower the max level because you'll see
better what's going on and the length parameter is the important one.
If you still get problems, check out the verbose output, it may give hints
and remember, BSP settings play a part and if you've optimised these before you
apply the displacement you may need to readjust them.
Let me know how it goes.
-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---
From: owner-xsi@(protected) [mailto:owner-xsi@(protected)] On Behalf Of
Sandy Sutherland
Sent: 09 June 2004 15:35
To: XSI@(protected)
Subject: Calling Kim - displacement problems!
We have a problem with random crashing that I have narrowed down to
displacement - as soon as I turn it off, it renders, it is not amemory problem
, and watching verbose renders says nothing - Kim you were talking about some
displacement settings that you found worked well the other day - I can't find
the mails, can you please remind me of your findings!
Thanks
Sandy
-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- -----
Sandy Sutherland Digital Doodeller/Technical Director
The Refinery (Cape) http://www.refinery.co.za
mailto:sandy@(protected)
(P) (+27 21) 480 3132 (F) (+27 21) 480 3101
-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- -----
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859 (See http://iso-8859.ora-code.com)-1">
<META content="MSHTML 6.00.2800.1400" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>Thanks Kim - this is basically what we have - the
length is defined by the amounts specified in the change range node for the
height of the displacement. I just seem to remember there being some
discussion about using LDA settings instead - maybe I had a dream or
something.......burble burble!!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>S.</FONT></DIV>
<DIV> </DIV>
<DIV>-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- -----<BR>Sandy
Sutherland Digital Doodeller/Technical Director<BR>The Refinery
(Cape) <A
href="http://www.refinery.co.za">http://www.refinery.co.za</A><BR><A
href="mailto:sandy@(protected)">mailto:sandy@(protected)</A><BR>(P) (+27
21) 480 3132 (F) (+27 21) 480
3101<BR>-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- -----</DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT:
#000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">-- -- Original Message -- -- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=kim@(protected) href="mailto:kim@(protected)">kim aldis</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=XSI@(protected)
href="mailto:XSI@(protected)">XSI@(protected)</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, June 09, 2004 4:57
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: Calling Kim - displacement
problems!</DIV>
<DIV><BR></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#008080 size=2><SPAN
class=078494314-09062004>The only time I've had crashes is when the mesh
pretty much fills screen and the detail is high, in other words, when there's
loads of polys. We were also using GI and I always figured it was
memory.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#008080 size=2><SPAN
class=078494314-09062004></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#008080 size=2><SPAN
class=078494314-09062004>The key is to use view dependant, this way you
generate as much detail as you need for any given frame and no more. It's
just
more efficient.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#008080 size=2><SPAN
class=078494314-09062004></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#008080 size=2><SPAN
class=078494314-09062004>Basic settings, though;</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#008080 size=2><SPAN
class=078494314-09062004></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#008080 size=2><SPAN
class=078494314-09062004>Use fine, view dependancy on. Length is the maximum
length to which polys will be subdivided, measured in pixel diagonals, so set
it to somewhere between 0.2 and 3, depending on the sharpness of the detail
you need - very fine, straight line stuff, set it low, smoother stuff, set it
high. The max subdee you should set as high as it'll let you - it's clamped
by
the length parameter.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#008080 size=2><SPAN
class=078494314-09062004></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#008080 size=2><SPAN
class=078494314-09062004>That's about it, really. If you're having problems,
start with a high length and work down. Better to do this than lower the max
level because you'll see better what's going on and the length parameter is
the important one.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#008080 size=2><SPAN
class=078494314-09062004></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#008080 size=2><SPAN
class=078494314-09062004>If you still get problems, check out the verbose
output, it may give hints and remember, BSP settings play a part and if you
've
optimised these before you apply the displacement you may need to readjust
them.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#008080 size=2><SPAN
class=078494314-09062004></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#008080 size=2><SPAN
class=078494314-09062004>Let me know how it goes.</SPAN></FONT></DIV><BR>
<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #008080 2px solid;
MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> owner-xsi@(protected)
[mailto:owner-xsi@(protected)] <B>On Behalf Of </B>Sandy
Sutherland<BR><B>Sent:</B> 09 June 2004 15:35<BR><B>To:</B>
XSI@(protected)<BR><B>Subject:</B> Calling Kim - displacement
problems!<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><FONT face=Arial size=2>We have a problem with random crashing that I
have narrowed down to displacement - as soon as I turn it off, it renders,
it is not amemory problem, and watching verbose renders says nothing
-
Kim you were talking about some displacement settings that you found worked
well the other day - I can't find the mails, can you please remind me of
your findings!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Sandy</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial
size=2>-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- -----<BR>Sandy
Sutherland Digital Doodeller/Technical Director<BR>The Refinery
(Cape) <A
href="http://www.refinery.co.za">http://www.refinery.co.za</A><BR><A
href="mailto:sandy@(protected)">mailto:sandy@(protected)</A><BR>(P)
(+27 21) 480 3132 (F) (+27 21) 480
3101<BR>-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- -----</FONT><
/DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>
|
|
|