Guides from mesh. Motion blur not working.

 
 
 
Posted by:matthewb
Data created:15 November 2019

have you guys seen this before?   Latest Arnold core 5.4.0.1, Latest Ornatrix and Maya 2019.1.

We are seeing this error.   No motion vector with instontaniusShutter and no motion Blur with that checked off. 

// Error: AiArraySetVecFunc: out-of-range error (309552 out of 309552) in D:\TeamCity\buildAgent\work\2d9dd3c45e19da18\Ephere\Ornatrix\Private\ArnoldExport.cpp at line 165 //
// Error: AiArraySetVecFunc: out-of-range error (309553 out of 309552) in D:\TeamCity\buildAgent\work\2d9dd3c45e19da18\Ephere\Ornatrix\Private\ArnoldExport.cpp at line 197 //
// Error: AiArraySetVecFunc: out-of-range error (309554 out of 309552) in D:\TeamCity\buildAgent\work\2d9dd3c45e19da18\Ephere\Ornatrix\Private\ArnoldExport.cpp at line 197 //
// Error: AiArraySetVecFunc: out-of-range error (309555 out of 309552) in D:\TeamCity\buildAgent\work\2d9dd3c45e19da18\Ephere\Ornatrix\Private\ArnoldExport.cpp at line 197 //
// Error: AiArraySetVecFunc: out-of-range error (309556 out of 309552) in D:\TeamCity\buildAgent\work\2d9dd3c45e19da18\Ephere\Ornatrix\Private\ArnoldExport.cpp at line 197 //

hairFromGuidesNode = cmds.ls(type='HairFromGuidesNode')
for i in hairFromGuidesNode:
cmds.setAttr( i + '.generatePerVertexData', 1 )

We found that it only works in the current render session when generatePerVertexData is toggled.

Are you saving the scene after executing the command?

Marsel Khadiyev (Software Developer, EPHERE Inc.)

yes. we tested that.. when we open the scene again, all motion blur and vectors are no longer working.

After reloading the scene can you confirm in Hair from Guides node that "Generate Per Vertex Data" checkbox is on?

Marsel Khadiyev (Software Developer, EPHERE Inc.)

Yes it is still on after reopening. 

We are not getting motion blur data on Ornatirx fur or hair with the latest version.

No motion Vectors, no 3D motion blur. miss alignment with motion blur center on frame and end on frame.  we only get true alignment on Start on frame.. but there is no motion blur information. 

We have tried maya's Motion Vector AOV as well as the MV_Utility shader. 

This is becoming very concerning. 

Could this be complexity of groom issue? 

I will make an investigation today

Marsel Khadiyev (Software Developer, EPHERE Inc.)

I reproduced the motion blur issue, we're looking into it

Marsel Khadiyev (Software Developer, EPHERE Inc.)

Should be fixed in next nightly (21448+)

Marsel Khadiyev (Software Developer, EPHERE Inc.)