DISNEY ANIMATION CAREERS
Ptex is a texture mapping system developed by Walt Disney Animation Studios for production-quality rendering:
The Ptex API provides cached file I/O and high-quality filtering - everything that is needed to easily add Ptex support to a production-quality renderer or texture authoring application.
There were many drawbacks to traditional texture mapping methods that led to the development of Ptex:
Ptex addresses all these issues by eliminating UV assignment, providing seamless filtering, and allowing any number of textures to be stored in a single file.
Ptex has been used on virtually every surface of every Walt Disney Animation Studios production since 2008.
Ptex uses a custom file format that is designed specifically for efficient rendering. A Ptex file can store an arbitrary number of textures along with mipmaps and adjacency data used for filtering across face boundaries.