A variety of new features and improvements including:

• Support for multiple distant lights (see TestMultipleLights unit test)
• Changes in the MaterialX code generator to support "data driven materials". Rather than assume a fixed set of material parameters, Aurora will generate a set of material properties based on the contents of MaterialX file that can be modified directly without changing the MaterialX document. (see TestMaterialX unit test)
• Added a custom USD ARResolver for doing some asset processing operations. The ImageProcessingResolver will accept URIs with the imageProcessing and pre-process the resulting data before passing to the Hydra render delegate.
• Implemented material emission (see TestMaterialEmission unit test)
• Transfer buffers via temporary upload buffer on upload heap for faster performance.