Re: Reflections with motion blur problem.

["Objectivo49" <xsi(at)pixmix.tv>]

Hello Kim,

Yes, I did...
But the problem exists only on one side of the object
depending on the rotation direction.

Try the script I sent in the last email and do a render region on it
on the camera viewport.

Cheers,
Filipe

----- Original Message ----- 
From: "kim aldis" <kim(at)cg-soup.com>
To: <XSI(at)Softimage.COM>
Sent: Tuesday, April 18, 2006 4:30 PM
Subject: RE: Reflections with motion blur problem.


> Are you un-premultiplying your fill before you composite it?
>
> > -----Original Message-----
> > From: owner-xsi(at)Softimage.COM
> > [mailto:owner-xsi(at)Softimage.COM] On Behalf Of Objectivo49
> > Sent: 18-April-2006 16:17
> > To: XSI(at)Softimage.COM
> > Subject: Reflections with motion blur problem.
> >
> > Hello
> >
> > Yesterday I just found out one of
> > our renders of a rolling and bouncing
> > "paint can" had a small problem in compositing, as it showed
> > a dark band that looked like the alpha channel didn't fit the colour:
> >
> > http://paragrama.net/manalokos/albums/album07/lata.jpg
> >
> > After some debugging I realized that this was not a problem
> > originated on my material, but on the reflections themselves
> > combined with motion blur.
> >
> > Here is a render of a sphere spinning very fast with 100%
> > reflectivity, I notice 2 issues:
> >
> > http://paragrama.net/manalokos/albums/album07/bola.jpg
> >
> > 1 - The reflection is blurred, It shouldn't be at all!
> > 2 - the dark band reappears
> >
> > Does anyone have a solution for the problem?
> > I beleive this is a important issue and should be corrected.
> >
> > Best regards
> > Filipe Alves
> >
> > Here is a script for a scene showing the problem:
> >
> > ----------------------------------------------
> >
> > CreatePrim "Sphere", "MeshSurface"
> > SetValue "sphere.polymsh.geom.subdivu", 80 SetValue
> > "sphere.polymsh.geom.subdivv", 80 CreatePrim "Sphere", "MeshSurface"
> > Scale , 10.6428571428571, 10.6428571428571, 10.6428571428571,
> > siRelative, siLocal, siObj, siXYZ, , True, , , , , , 0
> > ApplyShader "Material\Constant", , , ,
> > siLetLocalMaterialsOverlap SIApplyShaderToCnxPoint "Image",
> > "Sources.Materials.DefaultLib.Material.Constant.color"
> > CopyPaste , "Shaders\Texture\Mixers\Mix_2colors.Preset",
> > "TransientObjectContainer"
> > SetValue
> > "TransientObjectContainer.Mix_2colors.base_color.red", 1
> > SetValue
> > "TransientObjectContainer.Mix_2colors.base_color.green", 1
> > SetValue
> > "TransientObjectContainer.Mix_2colors.base_color.red", 1
> > SetValue
> > "TransientObjectContainer.Mix_2colors.base_color.green", 1
> > SetValue
> > "TransientObjectContainer.Mix_2colors.base_color.blue", 1
> > SIConnectShaderToCnxPoint
> > "Sources.Materials.DefaultLib.Material.Constant.Image",
> > "TransientObjectContainer.Mix_2colors.color1", False
> > SIConnectShaderToCnxPoint "TransientObjectContainer.Mix_2colors",
> > "Sources.Materials.DefaultLib.Material.Constant.color", False
> > ActivateObjectSelTool SetAndToggleSelection "sphere", , True
> > ActivateObjectSelTool ApplyShader , , , ,
> > siLetLocalMaterialsOverlap SetValue
> > "sphere.Material1.Phong.reflectivity.red", 1 SetValue
> > "sphere.Material1.Phong.reflectivity.blue", 1 SetValue
> > "sphere.Material1.Phong.reflectivity.red", 1 SetValue
> > "sphere.Material1.Phong.reflectivity.blue", 1 SetValue
> > "sphere.Material1.Phong.reflectivity.green", 1 SaveKey
> > "sphere.kine.local.rotx,sphere.kine.local.roty,sphere.kine.loc
> > al.rotz", 1 SetValue "PlayControl.Key", 11 SetValue
> > "PlayControl.Current", 11 PrevFrame Rotate , 0, 1440, 0,
> > siAbsolute, siPivot, siObj, siY, , , , , , , , 0 SaveKey
> > "sphere.kine.local.rotx,sphere.kine.local.roty,sphere.kine.loc
> > al.rotz", 10 SetValue "PlayControl.Key", 5 SetValue
> > "PlayControl.Current", 5 InspectObj "ViewRenderOptions", , ,
> > 1 SetValue "ViewRenderOptions.MotionBlur", True SetValue
> > "ViewRenderOptions.MotionSteps", 10 ActivateObjectSelTool
> > SetAndToggleSelection "sphere1", , True ActivateObjectSelTool
> > CreateProjection "sphere1", siTxtSpherical,
> > siTxtDefaultSpherical, "Texture_Support", "Texture_Projection"
> > SetInstanceDataValue ,
> > "Sources.Materials.DefaultLib.Material.Constant.Mix_2colors.Im
> age.tspace_id",
> > "Texture_Projection"
> >
> >  ------------------------------------------------------------- 
> >
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