Arnold for Maya 18.104.22.168 This version on core 22.214.171.124
HIGHLIGHTED NEW FEATURES
Russian Roulette: The standard and lambert shaders now use Russian Roulette termination to more efficiently render with high GI depth. For AA samples 5 or higher the increase in noise is typically very small. Indoor scenes with high GI depth will benefit the most, but also scenes with lots of glass and high refraction/reflection depth. In such scenes we have measured between 1.5x and 5x faster renders.
Upgraded OIIO to 1.5.20: We have upgraded the OpenImageIO library used for reading texture maps from 1.5.15 to 1.5.20.There have been many changes between these two versions, including many little bug fixes and optimizations.
Env var expansion in procedural nodes: The procedural.dso parameter now supports expansion of environment variables delimited by square brackets, similar to the env var expansion in searchpaths in the options node.
Render options and stats in EXR metadata: Several global render options, such as sample settings and ray depths, as well as some render stats,are now stored in the image file as EXR metadata.
Removed size limit on node and metadata names: Node names, node entry names, and metadata item names no longer have any size limitations.
Search paths: The procedural and shader search paths can now use both : and ; characters as separators for multiple paths, on all platforms. Texture search paths already supported this.
Report memory for smooth derivs: The memory usage summary for polymeshes now includes a separate line to account for subdiv_smooth_derivs storage.
Custom attributes in deep EXR: Just like the regular EXR driver, the deep EXR driver now also supports custom metadata/attributes via the new parameter driver_deepexr.custom_attributes.
Volume sample float and rgb shaders are now classified as surface shaders
Updates allowing to compile MtoA against Maya 2017
Support XGen options «Cull primitives outside view» / «Only Primitives in View». This will also make XGen presets render correctly.
Fixed crash when Abort on License Fail is enabled
Add support for the new OpenGL Core Profile added in Maya 2016 for VP2.
Renamed sss and volume sampling options: The global options volume_indirect_samples and sss_bssrdf_samples have been renamed to GI_volume_samples and GI_sss_samples respectively, for consistency with the other existing sampling options (GI_diffuse_samples etc).
Default sss samples: The default value of the newly renamed GI_sss_samples option has been changed from 3 to 2.