displacement nightmare... 2004-06-25 - By luc froehlicher
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thanks dave
I will try with rapid motion . I thought it was only for motion blur ...
(I don't use motion blur here)
frankly , if I could stay away from .mi , I really would.
btw , shouldn't these options be exposed in xsi. ?
I will try them.
Dave Lajoie wrote:
>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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