December 10, 2019
Autodesk Network Licensing now requires new license files with an updated 2020 version. Please follow the instructions on this page to generate your license file. More info about Arnold 6 licensing can be found here.
Arnold, KtoA, and other downloads are available here. Installation instructions come with KtoA, but can also be viewed here: Installation.
Linux: 440.36 or higher
Windows: 441.28 or higher
Updated Arnold core: Update to Arnold 6.0.1, which features GPU support for light filters, energy-preserving rough refraction, improved Oren-Nayar diffuse and rough thin-wall transmission, improved license management, and much more in addition to many bug fixes. Please see the release notes here. (#434, #419, #437)
ArnoldMaterialXBakenode can now bake materials, e.g. the surface/volume and displacement shaders attached to a shape, into a named material in a MaterialX file.
ArnoldMaterialXAssignalso more clearly differentiates between a material and a look being assigned. (#431)
MaterialX assign improvements:
ArnoldMaterialXAssign now allows selecting a specific material out of the file, rather than relying on the presence of entire looks. (#419)
Improved GPU device selection: The manual GPU device selection (in the device area of
ArnoldGlobalSettings) is improved, and error reporting when GPUs cannot be used has improved in the log. (#410)
Curves user data improvements: User data on curves is now properly handled, even when triplicating endpoints for B-spline and Catmull-Rom bases. There is also a new operator/node for manipulating curve widths more easily,
ArnoldCurveSetWidth. (#421, #380, #391)
Installer: KtoA now is officially distributed via an installer on both Linux and Windows, with binaries signed on Windows as authentic Autodesk products. For custom/local builds the old zip and tarballs can still be generated, however. The installer will try to find (and allow the user to set) the katana location, so that it can generate a launch script which makes it much easier to run KtoA. For power users they can still use their existing launch setup for Katana, setting
KATANA_RESOURCES, etc as before. (#309, #429)
Dropped support for Katana 3.0.x series: Starting in KtoA 3.0, support for Katana 3.0.x is dropped, but release series 3.1.x and 3.2.x are supported.
ArnoldMaterialXAssign material parameter:
ArnoldMaterialXAssign previously re-used the look parameter when assigning materials. Now that parameter is hidden when materials are being assigned and instead the
material parameter is populated with the available materials from the MaterialX file. You may need to re-select the MaterialX file to get it to refresh with the new parameter. (#431)
color_convert shader args: The args for
color_convert were wrong, and reflected a much earlier version of the shader. These have been corrected, but you should set the from and to parameters manually on any existing
color_convert shaders in your shader network to ensure they have correct values. (#373)
#430 Additional AOVs not denoised by noice
#443 Arnold crashing when using geometry.point.width on linear curves in Katana