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Note

To facilitate the rendering of old scenes, MAXtoA includes a feature to call native C++ max Maps (not Materials!) from within a special Arnold adapter shader.

This allows the use of most legacy 3ds Max Maps with MAXtoA (such as Gradient, Noise, Substance, etc.).

To do this you must enable Legacy 3ds Max Map support in the System of the Render Setup window.

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Below are some of the limitations when using legacy 3ds Max Maps with MAXtoA:

  • This only works when rendering inside of 3ds Max itself, since native 3ds Max code is being called.
  • For this reason, Legacy 3ds Max Maps can never be exported to an Arnold Scene Source file, and can not render outside of MAXtoA. This is important if you wish to create Procedural objects, render with kick, or use services like Zync.
  • You cannot connect Arnold shaders as inputs to a 3ds Max shader. Everything up-stream upstream to a 3ds Max shader must be a 3ds Max shader. For instance, a 3ds Max 'smoke' can connect to an Arnold shader’s color, but an Arnold shader cannot connect to a Tile’s color parameter.
  • Not every Legacy 3ds Max Map is guaranteed to work.
  • There can be certain stability issues in ActiveShade when editing certain parameters, because the legacy 3ds Max shader API is in some aspects not thread-safe for both rendering and editing at the same time.

 

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