Currently there are no parameters these functions expect.Īdditionally, AiLoadImage() has been deprecated and replaced with the more appropriately named AiReadImage() functionally they do the same thing. Load/Read, Write, and Resize image API changes: The Image API functions introduced in 7.1.4 now also take an optional AtParamValueMap so that in the future we can add or change parameters to these functions without breaking the API. For example arnold:driver_jpeg:quality will set the quality when rendering with the jpeg driver. usd#1353ĭriver options in the RenderProduct primitive: It is now possible to set the driver options in the RenderProduct primitive using attribute names prefixed with the driver name in the Arnold namespace. usd#1390ĪutoTX environment variable: HDARNOLD_auto_generate_tx can be set to override the default AutoTX behaviour in the render delegate. Before only the Help and Role metadata were passed to the registry. usd#1366Īrnold shader metadata: We now register all Arnold shader metadata in the Sdr registry. MaterialX displacement shaders: MaterialX displacement shaders are now interpreted correctly. For scenes with non-opaque objects, disabling autobump on shadow rays can give up to a 50% speed up, usually without changing the look. These used to be treated as always enabled. (ARNOLD-12912)īetter autobump visibility masking: We can now also disable autobump on camera and shadow rays. This can result in an up to 20% reduction in rendering time especially when using multi-socket systems. Improved many-core OCIO performance: Rendering performance when using OCIO has been improved (for example when using 8-bit textures, textures in a different colorspace to the rendering colorspace and not using AutoTX, or shading operations that require colorspace transforms). Remove warning about using tiled with deep_exr: We no longer warn about using tiled with deep_exr. Previously it was disabled in the core and only some plugins. Polymesh.smoothing defaults to true: The default setting for polymesh.smoothing (smoothed normals) is now true across the core and plugins. This means the first light instance is linked to the first shape instance, the second light instance to the second shape instance, and so on. Instancer light linking: If a light is linked to a shape and both are instanced, then the instancer now preserves this link within instances. Support up to 1024 CPU cores: AI_MAX_THREADS has been increased from 256 to 1024, which allows Arnold to now create up to 1024 threads for full CPU utilization on machines with up to 1024 cores. The Disney cloud on a dual Intel Xeon Linux machine (56 total logical cores) now renders 1.4x faster. Improved many-core volume scaling: Rendering performance of volumes has been improved on certain many-core machines. (ARNOLD-11919)įaster node init/update: The node init and update time is now faster. Textures that are not supposed to have colorspace changes get the tag raw, such as my_texture_. For example, running AutoTX on my_texture.jpg with an sRGB color space and ACEScg rendering color space would produce: my_texture_sRGB_. (ARNOLD-12291)Ĭolorspace included in TX filename: AutoTX-generated files now include the original extension and the texture and rendering color spaces in the filename. The Render view now displays the current status of the render process in the bottom status bar. (MTOA-1283)ĭisplay current render state in Arnold Render View status bar. TX Manager displays nodes in texture list : the TX Manager can now display the scene nodes that use a texture and the colorspace they are set to. Support MikkT normals in Maya 2024 : MtoA in Maya 2024 supports the new MikkT tangents that can be exported.
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