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Rendering with Arnold in Houdini and Solaris using the HtoA plug-in.
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Rop-arnold does not write Texture path envrioment asString into .mtlx file

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Message 1 of 3
gshankar165
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Rop-arnold does not write Texture path envrioment asString into .mtlx file

Hi,

I am implementing htoa production workflow. Since the material override and style-sheet method currently not supported in htoa, I thought to give a try to the MaterialX assignment process. It works amazing. There is a bug while mtlx look assignment.


1. It does not write the whole texture path asString data to mtlx file.

eg: my image node texture path: $PROJECT_PATH/$ASSET/asset_diff.jpg

data exported to mtlx file: value=/Drive/projects/Tombx_ride/Horse/asset_diff.jpg. Environments are not suppose to get expanded.


I use Ropnet-arnold node for writing .mtlx lookfile.

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Message 2 of 3
Stephen.Blair
in reply to: gshankar165

I'm not sure this is a bug.

When the materialx operator reads in the mtlx file and creates the Arnold nodes, that happens in the render session, where $PROJECT_PATH and $ASSET are unknown. Those have meaning only in Houdini.



// Stephen Blair
// Arnold Renderer Support
Message 3 of 3
gshankar165
in reply to: Stephen.Blair

is there any way to get value=$PROJECT_PATH/$ASSET/asset_diff.jpg inside .mtlx file? Because, later If I need to change the project path, It will be easy for me.

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