January 12, 2016

This version uses Arnold


  • Update to Arnold 4.2.12.
  • New specular distribution (Beckmann or GGX) and SSS profile parameters in the standard shader.
  • Support for per-light AOVs for volumetrics.
  • Allow for negative thread count, to indicate how many cores not to use.
  • A licensing dialog is now available from the Arnold menu, a simple dialog to troubleshoot and install license files. You can query the license status, save diagnostic information to a file to send to support or obtain your host ID to generate a node-locked license.

Linux installation notes

  • Starting from SItoA 3.6.0  (which uses Arnold, the minimum requirements for Linux have been raised to the equivalent of RHEL/CentOS 6 for glibc and libstdc++. However, Softimage ships with a legacy libstdc++ that is put in the LD_LIBRARY_PATH and that hijacks the system one, making it impossible to load the Arnold DSO. To fix this, one solution is to preload the system libstdc++ before launching Softimage:


    export LD_PRELOAD=/usr/lib64/libstdc++.so.6


    Another solution is to remove the libstdc++ from the Softimage install and let the system one take over, for example:
    cd my_softimage_install/Application/bin
    mv libstdc++.so.6 libstdc++.so.6.bak
    mv libstdc++.so.6.0.10 libstdc++.so.6.0.10.bak
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