Arnold-7.1.4.0

[cpichard]

[7.1.4.0] - 2022-11-21

Enhancement

• Imager support:

  • Attach imager graphs in the procedural #1305 Imagers can now be rendered in Hydra and the procedural through an imager node graph connected to the RenderSettings "imager" attribute.

• Skinning:

  • Support UsdSkel on instances #1291 UsdSkel Skinning can now support instances and was made more efficient.
  • Apply UsdSkel without relying on UsdSkelBakeSkinning in the procedural #1078 Motion blur is now correct in both hydra and the procedural.

• Lights:

  • Support shader connections to mesh lights #1294 Shader connections to mesh lights It is now possible to connect shading graphs to a mesh light color. This can be done by connecting an ArnoldNodeGraph primitive to the mesh attribute primvars:arnold:light:shaders.
  • Cylinder lights not supported in the procedural #1231 Cylinder lights: Cylinder lights are now supported in the USD procedural.

• Camera:

  • Improve dataWindowNDC support #1271 dataWindowNDC support has been improved for batch rendering. It now adds more pixels to the output image instead of simply adjusting the frustum, when using husk or kick.
  • Support horizontal and vertical Aperture Offset on camera #1225 The horizontal and vertical aperture offset attributes in the cameras are now supported, both in Hydra and in the procedural. This enables features such as render regions.

• Render settings:

  • Use renderSettingsPrimPath metadata #1235 We can now set in the USD file which RenderSetting primitive will control the render by pointing the layer metadata attribute renderSettingsPrimPath to the RenderSetting primitive.
  • Allow list of AOV ArnoldNodeGraph primitives in RenderSettings #1321 The aov_shader attribute of a RenderSettings primitive can now point to multiple ArnoldNodeGraph. They have to be separated by a space.
  • Abort on Error not exposed as a Hydra render setting #1259 "Abort on error" is now declared as a Hydra render setting, and can be controlled in usd_view or mayaUSD.
  • Default renderVar's driver should be box in the reader #1313 The attribute "arnold:filter" of the RenderVar primitive now defaults to box instead of closest_filter.
  • Support AOVs called "color" for beauty in the reader #1311 RenderVar aov name can be called "color" for the beauty, it was supported in the render delegate and is now supported in the procedural.

• Render settings not passed to the render delegate via husk #1006 Improved default sampling values in Hydra The default sample values were inconsistent between interactive Hydra versus batch rendering (e.g. with husk). This was improved, and now matches the other Arnold plugins. This is an incompatible change for scenes where sampling values were left to default.

• Sdr parser should define output properties for Arnold shaders #1211 Shader outputs registered in Sdr: The output attributes for Arnold shaders are now registered, along with their type, in the Sdr registry. This allows for applications / plugins to expose shading trees with Arnold shaders with the correct types.

• Add env variable in the delegate to dump the arnold scene before rendering it #1266 Environment variable to debug Hydra: In order to help debugging Hydra renders, an environment variable HDARNOLD_DEBUG_SCENE can now be set to a .ass scene filename, allowing the Arnold scene data to be saved out as the render starts.

Bug fixes

• Instances visibility overrides failing in Hydra #1278 Support visibility overrides on instances in the render delegate
• Empty ProductName renders ".exr" #1336 Fix empty ProductName rendering as .exr
• Motion blur issues with skinned instances in the procedural #1331 Fix motion blur sampling on skinned instances
• Motion blur difference between render delegate and procedural #1329 Fix inverted motion blur in the render delegate when using velocities
• AiSceneLoad does not load array type user parameter from usd #1315 Fix interpretation of primvars arrays with constant interpolation
• RenderVar's filter width not translated properly in the reader #1309 Fix RenderVar's filter width not translated properly in the procedural
• Unable to render deepEXR with kick #1306 Allow to render deepexr RenderProduct with kick
• Don't set UsdUvTexture uvset when st coordinates are used #1282 Don't set UsdUvTexture uvset when st coordinates are used
• Crash when volume density prim is invalid #1281 Fix crash when a volume prim density field is invalid
• Set output to half precision for RenderVars with half types #1232 Set output to half precision for RenderVars with half types
• Sdr node discovery results should be consistent across renderers #1214 Make Sdr node discovery results consistent across renderers

New Contributors

• @juandejoya made their first contribution in Sdr node discovery results should be consistent across renderers #1342

Full Changelog: Arnold-7.1.3.0...Arnold-7.1.4.0

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This discussion was created from the release Arnold-7.1.4.0.