Arnold 5.2 Released
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Arnold 5.2 Released
13 August, 2018
News

Solid Angle has revealed Arnold 5.2 that adds a number of new features in addition to performance and usability improvements. The new release, for example, brings improved shaders with the addition of a new Cell Noise, but there’s more. Let’s study the update. 

  • Texture baking: A new type of node called uv_camera has been added that will produce an image of a given polymesh’s shaded UV space as output, which can be useful for texture baking. (#6091, #7206)
  • Improved sampling of spherical lights: A new technique for sampling point lights has been added which can show significant reductions in noise, especially for large lights illuminating surfaces at grazing angles (rim lighting, for example). (#5534)
  • Faster adaptive subdivision: Adaptive subdivision is now up to 2x to 3x faster even on a single thread. In addition, the adaptive codepath has been multi-threaded to fully take advantage of machines with many cores. The aggregated speedup in such machines can be 15x or more. (#2311, #7186, #7201, #7229)
  • Improved EXR read performance: Threaded read performance and scaling of OpenEXR files has been greatly improved. (#6605)
  • noice denoiser improvements: The stability and usability of the high-quality noice denoiser has been improved thanks to various bugfixes and improved error checking. In particular, the original metadata, display windows, bitdepth and compression are preserved in output files. (#7226)
  • OptiX denoiser improvements: The GPU memory consumption of the fast OptiX denoiser has been greatly reduced proportionally to the number of denoised AOVs. Fringing artifacts around HDR pixels have been reduced. (#6885, #7100, #7190, #7333, #6880)
  • Sheen in standard_surface: The standard_surface shader supports a new, energy-preserving sheen effect designed to render cloth-like microfiber materials such as velvet. The sheen effect is layered on top of the diffuse and subsurface components. (#7234)
  • New cell_noise shader: A new cell_noise shader has been added which can create many different useful cell-like patterns. The color of each cell is mapped to a palette parameter, enabling the easy creation of patterns with colors chosen from a specific palette. (#5985, #6051)
  • New controls in range shader: The range shader has been augmented with parameters to control contrast, bias and gain. (#7277)
  • RGB clamping in clamp shader: The clamp shader can now be configured to either a scalar or color mode. (#7278)
  • Matrix shaders: The matrix_multiply_vector and matrix_transform shaders have been reinstated. (#7243)
  • Built-in Cryptomatte: Cryptomatte AOV shaders and filters are now being included as a part of the Arnold core package. (#7301)
  • New built-in volume AOVs: The Z depth for the first volume contribution can now be output in a flat AOV with volume_Z (depth AOV for volumes was already available in deep files). Also, ID now works for volumes. (#7326, #7327)
  • New control in toon shader: Edge detection can now be controlled using a STRING type user data called toon_id. This feature is enabled when user_id is checked. Otherwise, the detected edges will be driven by the object’s own name as a toon-specific ID. (#7125)
  • Alembic procedural improvements: The Alembic library has been updated to 1.7.5 in this release. User data parameters that clash with shape parameters will now get an underscore prefix instead of a warning. Added an object_transform parameter to allow additional transformations on the generated geometry. Added a make_instance parameter so that the Alembic procedural will automatically create instances of objects present in multiple Alembic procedurals (experimental; disabled by default) (#6916, #6947, #7076, #7109, #7163, #7242, #7261, #7286)
  • Improved operator assignments: Assignment expressions in operators have improved functionality with regards to reference and string types. (#7284, #7287)
  • Upgrade to OSL 1.9.9: This upgraded version of OSL addresses several reported limitations involving locales, the availability of certain noise types, and compatibility issues with utility functions like transformc being promoted to built-in function definitions. (#6225)
  • Updated to RLM 12.4BL2: The RLM license server and library have been upgraded from version 12.2BL2 to 12.4BL2, which fixes sporadic access violations and hangs. (#7350, #7120)

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