AW: bad motion blur 2004-02-11 - By lucas
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Hi there,
I had the same problem and it seems that if you change the simulation
from "Standard Caching" to "Standard No Caching", the Motion Blur works
... strange... well at least it worked for my scene.
Hope it works !
Lucas
-- --Urspr�ngliche Nachricht-- --
Von: owner-xsi@(protected) [mailto:owner-xsi@(protected)] Im Auftrag
von Morten Bartholdy
Gesendet: Wednesday, February 11, 2004 9:56 AM
An: XSI@(protected)
Betreff: Re: bad motion blur
Since the problem exists only at specific angles, if you need higher
shutter
close than that, you could simply key a slightly different angle on the
offending frames. I had the same, and it seems the shutter close "safe"
threshold varies, dependant on scenario.
MB
-- -- Original Message -- --
From: "Dan Yargici" <dan@(protected)>
To: <XSI@(protected)>
Sent: Wednesday, February 11, 2004 9:09 AM
Subject: Re: bad motion blur
> > I have a ball translating and rotating...very simple. I have one or
two
> > bad frames showing some strange artifacts due to motion blur.
>
> I had this also, see the pasted thread below:
>
>
-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
--
-- ------
>
> 0.666 - Oooooh scary........ ;)
>
> Cheers Robert.
>
> DAN
>
> -- -- Original Message -- --
> From: "Robert Martinu" <antediluvian@(protected)>
> To: <XSI@(protected)>
> Sent: Wednesday, December 31, 2003 12:20 PM
> Subject: Re: Motion blur bug in 3.5.1.1?
>
>
> > With your code snippet set to "at shutter speed":
> > set "shutter close" to less then 2/3 and you'll get correct results.
> > (0.666 works, 0.667 doesn't)
> >
> > Robert
> >
> > -- -- Original Message -- --
> > From: "Dan Yargici" <dan@(protected)>
> > To: <XSI@(protected)>
> > Sent: Wednesday, December 31, 2003 11:01 AM
> > Subject: Re: Motion blur bug in 3.5.1.1?
> >
> >
> > > I tried that also and it didn't work for me....
> > >
> > > If you have 2 minutes can you try it with the script snippet I
sent.
Just
> > for curiousity's sake.
> > >
> > > Cheers,
> > >
> > > DAN
> > >
> > >
> > > -- -- Original Message -- --
> > > From: "Adam Sale" <adamsale@(protected)>
> > > To: <XSI@(protected)>
> > > Sent: Tuesday, December 30, 2003 8:43 PM
> > > Subject: Re: Motion blur bug in 3.5.1.1?
> > >
> > >
> > > > I had the same problem.. The solution is to activate the
"Evaluate
> > Motion
> > > > SRT at shutter speed" in the motion blur controls pulldown of
the
> > render
> > > > options ppg. This is instead of using Evaluate Motion SRT for
the
entire
> > > > frame
> > > >
> > > > Adam
> > > > -- -- Original Message -- --
> > > > From: "Dan Yargici" <dan@(protected)>
> > > > To: <XSI@(protected)>
> > > > Sent: Tuesday, December 30, 2003 5:04 AM
> > > > Subject: Re: Motion blur bug in 3.5.1.1?
> > > >
> > > >
> > > > > Wow! a reply from support and a bug number before the mail
even
got to
> > the
> > > > list!
> > > > >
> > > > > 96270 XSI increasing Interpolation Steps causes render
glitches
when
> > > > object at certain angles
> > > > >
> > > > > *That's* why softimage can claim the crown when it comes to
> > support.....
> > > > :)
> > > > >
> > > > > Great work support folks, bummer about the bug though........
> > > > >
> > > > > DAN
> > > > >
> > > > > -- -- Original Message -- --
> > > > > From: "Dan Yargici" <dan@(protected)>
> > > > > To: <XSI@(protected)>
> > > > > Cc: <support@(protected)>
> > > > > Sent: Tuesday, December 30, 2003 2:17 PM
> > > > > Subject: Motion blur bug in 3.5.1.1?
> > > > >
> > > > >
> > > > > > I just finished a job where I needed rotational motion blur
and
much
> > to
> > > > my joy Softimage had just
> > > > > > released 3.5.1.1 - hurrah! However I found I was getting
random
> > > > glitches on certain frames... :(
> > > > > > and now I'm through that nightmare I've managed to rustle up
a
> > simple
> > > > setup to demonstrate:
> > > > > >
> > > > > > CreatePrim "Cube", "MeshSurface"
> > > > > > Scale , 0.127906976744186, 1, 1, siRelative, siGlobal,
siObj,
siXYZ
> > > > > > MoveCtr2Vertices "cube.pnt[2,3,6,LAST]", False
> > > > > > Translate , 0, -4, 0, siRelative, siLocal, siObj, siXYZ
> > > > > > SaveKey
> > > >
"cube.kine.local.rotx,cube.kine.local.roty,cube.kine.local.rotz", 0
> > > > > > Rotate "cube", 0, 0, 2880, siAbsolute, siAdd, siObj, siZ
> > > > > > SaveKey
> > > >
"cube.kine.local.rotx,cube.kine.local.roty,cube.kine.local.rotz",
100
> > > > > > SetCurveType "cube.kine.local.rotz", 2
> > > > > > SetValue "ViewRenderOptions.MotionBlur", True
> > > > > > SetValue "ViewRenderOptions.MotionBlurRed", 0.05
> > > > > > SetValue "ViewRenderOptions.MotionBlurGreen", 0.05
> > > > > > SetValue "ViewRenderOptions.MotionBlurBlue", 0.05
> > > > > > SetValue "ViewRenderOptions.MotionBlurAlpha", 0.05
> > > > > > SetValue "ViewRenderOptions.ShutterClose", 1
> > > > > > SetValue "ViewRenderOptions.MotionSteps", 5
> > > > > >
> > > > > > Look at frames 9,21,34,46,59,71,84 and 96 - basically any
frames
> > where
> > > > the object is close to the
> > > > > > same certain angle. It renders consistently when the steps
are
set
> > back
> > > > to 1....
> > > > > >
> > > > > > Most bizarre, I think you'll agree......
> > > > > >
> > > > > > DAN
>
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