1.6.9.0

Improvements

RenderMan :
- Added support for PxrLayer, PxrLayerMixer and PxrLayerSurface shaders (by implementing support for vstruct conditionals).
- Added support for IECoreScene::ShaderNetworkAlgo render adaptor API.

RenderMan : Fixed interactive denoising when rendering via the it display driver.
EditScopeUI : Fixed crash if childNodesAreReadOnly metadata was edited while no EditScope was selected.
Layouts : Fixed window title for detached panels. It is now always synchronised with the title of the main window.
OpenColorIO :
- Fixed display transform used by editors in detached panels. This problem was particularly noticeable in the LightEditor.
- Fixed display transform used by newly added editors. This was also particularly noticeable for the LightEditor.

Arnold ShaderNetworkAlgo : Deprecated substitutions API. Use IECoreScene’s render adaptor API instead. For backwards compatibility until it is removed, the substitutions API forwards to the render adaptor API.