Release Date

20 Apr 2020

This version uses the Arnold 6.0.3.0 core.

DOWNLOADS

www.arnoldrenderer.com/arnold/download/

MtoA 4.0.3 is a feature release, that is binary compatible with 4.0.* versions. It includes the following improvements :

Enhancements

USD Export : Added the ability to export the Arnold scene data as USD format, either from the File > Export All / Selected menu or the Arnold > Scene Export menu

Bifrost render large files : You can now render Bifrost scenes that contain geometry larger than 4GB

Overriding alembic instances with operators : A new parameter use_instance_cache enabled by default has been added to the aiStandin](topicid=arnold_for_maya_shapes_am_Stand_ins_html) node to control the internal cache that shares instances between alembic nodes. This parameter can be disabled when using operators to override the procedural contents while make_instance is enabled.

aiStandIn optimizations : The contents of the aiStandin](topicid=arnold_for_maya_shapes_am_Stand_ins_html) is now cached to make it faster to load large assets, and only need to query the contents a single time. The contents are now only loaded when the tree is expanded by the user.

Batch Render Dialog : there is now a basic dialog that is displayed when clicking the option box next to "Batch Render" in the Render menu.

Support for custom orthographic camera : Developers can now expose their custom orthographic camera on the camera attribute editor by adding the metadata orthographic = true in the node entry

Empty aiVolume render as box : If no file is given to the aiVolume](topicid=arnold_for_maya_volumes_am_Volume_html) node then it will render as a simple box volume

Solved slowdown caused by swatches: Render swatches were constantly loading Arnold resources when editing attributes, even when swatches were disabled. This was solved and optimized.

Parenting / unparenting is fixed in IPR sessions: Parenting and unparenting nodes was not being updated properly in the IPR.

Fixed regression with aiToon's lights lists: The light names in attributes "Rim Light" and "Stylized Highlight" were not translated properly to Arnold.

Bug Fixes