Release Date

April 27 2015

This version uses Arnold


  • Optimized volume rendering
  • Fixed long-standing artifacts with large ray marching steps
  • Faster volume caches (such as OpenVDB) in IPR


  • We restored the old matte settings. The Matte property now allows you to choose between Matte (the built-in Arnold matte) and Mask (the old SItoA matte)
  • Starting from SItoA 3.6.0  (which uses Arnold, the minimum requirements 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/


    Another solution is to stow away the libstdc++ from the Softimage install and let the system one take over, for example:
    cd my_softimage_install/Application/bin


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