displacement nightmare... 2004-06-25 - By Andre DeAngelis
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So just to confirm Dave, does turning on rapid motion blur on improve
displacement mapping? EVen with Motion Blur disabled?
AD
-- --Original Message-- --
From: owner-xsi@(protected) [mailto:owner-xsi@(protected)]On Behalf
Of Dave Lajoie
Sent: Friday, June 25, 2004 1:05 PM
To: XSI@(protected)
Subject: RE: displacement nightmare...
pls try:
ray3 -split_object 10000 10000 -swap_dir c:\temp -swap_limit 4000 mifile.mi
-imgpipe | imf_disp -
-swap_dir D directory for temporary data files, do not share
with
other hosts
-swap_limit N put at most N megabytes into swap_dir, 0=no
swapping
(default)
-split_object NP NF split objects with more than NP triangles(for
polygons
only) or NF faces, don't split(default): 0
might want to consider using rapid motion mode instead of scanline.
scanline is design for speed, but has one drawback: needs memory
rapid motion is little bit like renderman where it micro-tesselate into
small constant shaded microtriangles, once the tile is rendered, all the
micro triangles gets flushed out.
Dave.
-- --Original Message-- --
From: owner-xsi@(protected) [mailto:owner-xsi@(protected)]On Behalf
Of luc froehlicher
Sent: Friday, June 25, 2004 12:57 PM
To: XSI@(protected)
Subject: Re: displacement nightmare...
I have the default settings (specified 768)
I've also tried with unlimited , specified 2048 , same random crashes
duncan_burch@(protected) wrote:
>in your render options, have you got a memory limit set in optimization?
>just a thought
>
>Duncan Burch
>XSI 3D Lighting and Rendering Artist & TD
>www.duncanburch.com
>-- -- Original Message -- --
>Wrom: FAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESK
>To: <xsi@(protected)>
>Sent: Friday, June 25, 2004 5:21 PM
>Subject: displacement nightmare...
>
>
>
>
>>hi everyone
>>I've been messing around with displacement for 3 days
>>and so far I'm lost.
>>I crash every 15 minutes. with message like this :
>>raylib[1644] MEM 0.2 fatal 031006: cannot free memory
>>I've got 2 Gigs of ram and I never saw my ram usage exceed 800 Megs
>>during a render.
>>
>>I'm trying to render an object at subdivision level 2 (449 000
>>triangles) with displacement.
>>the original object was detailled at subd level 4 in zbrush (3.6
>>millions polys)
>>the initial (modelled) object at level 0 is 14052 triangles.
>>
>>displacement settings : fine , length 1 , view dependant , sharpness 0 ,
>>min0 , max 7
>>
>>I've tried to tweak the max value , no view dependant , bsp settings ,
>>memory settings , using .map , empty all caches .... same crashs.
>>
>>rendering in sequence is a dead end : first frame ok then hangs
>>batchrender is a little bit better : 5 6 frames then hangs...
>>
>>I did a test with a 3d texture as displacement and it renders very fine
>>, I managed to render a frame with up to 10 millions triangles
>>so for the moment I suspect the UV's or something.
>>find attached the xsicabs stuffs
>>
>>any idea is welcome to help me out of this nightmare.
>>
>>(this is with XSI4.0)
>>
>>luc
>>
>>
>>
>>
>>
>>
>>
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