Release Notes for Version 2.9.1

Release date: June 1, 2012

• This release contains several performance improvements and minor bug fixes in addition to those mentioned below.

Core Engine

Graphics Manager

• Each material attribute now has a flag called kAttributeMutable that determines whether the constant data, such as the color, stored in the attribute can be changed after a shader has been built. This flag is not set by default as an optimization that leads to higher shader performance.

Tools

Collada Importer

• When animations are imported, there is now an option to preserve the current transform for any nodes that are missing from the input file instead of setting the transforms for those nodes to the identity.