Maya 2020.4: A New Chapter for Bifrost
December 8, 2020

Maya 2020.4: A New Chapter for Bifrost

Autodesk has rolled out Maya 2020.4, designed to help artists and studios keep pace with the ever-increasing demand for content. This release unveils the biggest update to the Bifrost visual programming environment yet: deeper integration with Maya; a user experience overhaul; and new scattering, instancing, volumetrics, and FX capabilities extend proceduralism in Maya beyond FX and across the content creation pipeline. 
The release also integrates the latest version of Arnold, bringing artists a faster, more creatively engaging rendering experience, as well as updates to the Motion Library and Substance plugins.

The following are new capabilities in Bifrost:

Maya curve support: Maya curves can now be dragged and dropped directly into Bifrost graphs, where they are converted into Bifrost strands and can be used to build curve-based assets and tools. This update opens the door for artists to use Maya curves to guide procedural generation of roads and fences, as well as the placement and orientation of object scattering.

Graph shape nodes: Artists can now view Bifrost graphs as either DG or DAG nodes, that are visible in the outliner. DAG nodes are the new default for Bifrost graphs in Maya.

New fields system: This update introduces user-defined, implicit 3D scalar and vector fields with infinite resolution and low memory overhead. Using fields nodes, artists can now define custom fields to act as dynamic influences on particles, cloth, or aerodynamic simulations – without having to go inside FX compounds to edit them.

Scatter pack: Higher-level scattering and instancing compounds have been added to the Bifrost toolkit, including a blue noise scattering node and integration with the new fields system.

Volume improvements: Volume tools now support fully adaptive conversions between meshes and volumes, merging adaptive volumes, and converting between fields and volumes.

Cloth and thin-shell simulations: Users can now produce more accurate collisions and self-collisions with an updated Material Point Method (MPM) solver.

Aerodynamic simulations: The Aero solver gains significant performance enhancements, as well as increased capacity for detail refinement and artifact reduction, and new features like texture advection.

Instantly terminate computation: Quickly escape out of slow running simulations by hitting the ESC key.

Also, the update features a faster, more engaging rendering experience with Arnold 6.1.
Users can now adjust image exposure, color correction, white balance, tone mapping, and vignetting using new post-processing nodes called imagers. A new priority system for overlapping transparent objects enables artists to create scenes with more physically accurate reflections and refraction of rays. This allows for more realistic renders of scenes such as glass containers with liquid contents and bubbles or ice cubes. And, the GPU renderer can now partially load textures, providing big savings on both memory consumption and rendering time. Support for light linking and additional light AOV groups, and enhanced OSL JIT compilation performance have also been added.

Updates to the native Motion Library plugin include enhanced character previews with new orbit and zoom functions and a smoother initialization experience. An updated Substance plugin adds Substance Engine 8.0.3 compatibility, Standard Surface support, and improved interoperability with Maya and other Substance programs.