bad motion blur 2004-02-11 - By Dan Yargici
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> 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:
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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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