 | | | Instantiate - Bad? | Instantiate - Bad? 2005-03-02 - By Benjamin Huber
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We had a case once where generating thousands of instances of a fairly low-poly
(50 faces range) object would slow XSI
to a crawl. creating plain duplicates and merging them all in one huge object
solved the issue. aparently keeping track
of thousands of individual objects with trans/rot/scale information is more
computationally intensive than having one object
with tens of thousands of faces.
so, if that's possible in your case, merge your original object pieces into one
object, freeze it (thus getting rid of a whole
lot of transforms), and *then* generate the instances. or, even better, create
duplicates of your merged object and merge
all of them together. although, obviously, you won't be able to individually
animate the duplicates any more then. depends on
your scene.
hope that helps,
-ben
---
ben huber (x83291)
ilm digimatte
serious like ninjas
---
-- --Original Message-- --
From: owner-xsi@(protected) [mailto:owner-xsi@(protected)]On Behalf Of
Pollack, Sean
Sent: Wednesday, March 02, 2005 12:40 PM
To: XSI@(protected)
Subject: Instantiate - Bad?
I haven't found all the landmines yet in XSI and hit a bunch in a recent job.
Is instantiating a model with lots of pieces a bad idea?
Seems like my performance is in the toilet.
If there is a lot of geometry to reuse, is it recommended to go with
referencing and let it be at that and steer clear of instances?
S
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<DIV><SPAN class=507193421-02032005><FONT face=Arial color=#0000ff size=2>We
had
a case once where generating thousands of instances of a fairly low-poly (50
faces range) object would slow XSI</FONT></SPAN></DIV>
<DIV><SPAN class=507193421-02032005><FONT face=Arial color=#0000ff size=2>to a
crawl. </FONT></SPAN><SPAN class=507193421-02032005><FONT face=Arial
color=#0000ff size=2>creating plain duplicates and merging them all in one huge
object solved the issue. </FONT></SPAN><SPAN class=507193421-02032005><FONT
face=Arial color=#0000ff size=2>aparently keeping track</FONT></SPAN></DIV>
<DIV><SPAN class=507193421-02032005><FONT face=Arial color=#0000ff size=2>of
thousands </FONT></SPAN><SPAN class=507193421-02032005><FONT face=Arial
color=#0000ff size=2>of individual objects with trans/rot/scale information is
more computationally intensive </FONT></SPAN><SPAN
class=507193421-02032005><FONT face=Arial color=#0000ff size=2>than having one
object</FONT></SPAN></DIV>
<DIV><SPAN class=507193421-02032005><FONT face=Arial color=#0000ff size=2>with
tens </FONT></SPAN><SPAN class=507193421-02032005><FONT face=Arial color=
#0000ff
size=2>of thousands of faces.</FONT></SPAN></DIV>
<DIV><SPAN class=507193421-02032005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=507193421-02032005><FONT face=Arial color=#0000ff size=2>so,
if
that's possible in your case, merge your original object pieces into one
object, freeze it (thus getting rid of a whole</FONT></SPAN></DIV>
<DIV><SPAN class=507193421-02032005><FONT face=Arial color=#0000ff size=2>lot
of
transforms), </FONT></SPAN><SPAN class=507193421-02032005><FONT face=Arial
color=#0000ff size=2>and *then* generate the instances. or, even better, create
duplicates of your merged object and merge</FONT></SPAN></DIV>
<DIV><SPAN class=507193421-02032005><FONT face=Arial color=#0000ff size=2>all
of
them together. although, obviously, </FONT></SPAN><SPAN
class=507193421-02032005><FONT face=Arial color=#0000ff size=2>you won't be
able
to individually animate the duplicates any more then. depends
on</FONT></SPAN></DIV>
<DIV><SPAN class=507193421-02032005><FONT face=Arial color=#0000ff size=2>your
scene.</FONT></SPAN></DIV>
<DIV><SPAN class=507193421-02032005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=507193421-02032005><FONT face=Arial color=#0000ff size=2>hope
that helps,</FONT></SPAN></DIV>
<DIV><SPAN class=507193421-02032005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=507193421-02032005><FONT face=Arial color=#0000ff
size=2>-ben</FONT></SPAN></DIV>
<DIV><SPAN class=507193421-02032005>
<P><FONT face=Arial size=2>-<SPAN
class=507193421-02032005>-</SPAN>-</FONT><BR><FONT face=Arial size=2>ben huber
(x83291)</FONT> <BR><FONT face=Arial size=2>ilm digimatte</FONT> <BR><FONT
face=Arial size=2>serious like ninjas</FONT> <BR><FONT face=Arial
size=2>---</FONT> </P></SPAN></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid;
MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-- --Original Message-- --<BR><B>From:</B> owner-xsi@(protected)
[mailto:owner-xsi@(protected)]<B>On Behalf Of </B>Pollack,
Sean<BR><B>Sent:</B> Wednesday, March 02, 2005 12:40 PM<BR><B>To:</B>
XSI@(protected)<BR><B>Subject:</B> Instantiate - Bad?<BR><BR></FONT></DIV><
!-- Converted from text/rtf format --><BR>
<P><FONT face=Arial size=2>I haven't found all the landmines yet in XSI and
hit a bunch in a recent job.</FONT> </P>
<P><FONT face=Arial size=2>Is instantiating a model with lots of pieces a bad
idea?</FONT> <BR><FONT face=Arial size=2>Seems like my performance is in the
toilet.</FONT> </P>
<P><FONT face=Arial size=2>If there is a lot of geometry to reuse, is it
recommended to go with referencing and let it be at that and steer clear of
instances?</FONT></P>
<P><FONT face=Arial size=2>S</FONT> </P></BLOCKQUOTE></BODY></HTML>
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