PTEX files exist as 2 different types. Please find information about each of them below.
Type 1: Ptex Texture File
Ptex File Format uses a custom format for efficient rendering. A Ptex file stores textures, mipmaps and adjacency data for filtering. It was developed by Walt Disney Animation Studios to eliminate UV ...
Ptex File Format uses a custom format for efficient rendering. A Ptex file stores textures, mipmaps and adjacency data for filtering. It was developed by Walt Disney Animation Studios to eliminate UV assignment, allow thousands of textures in a single file, and provide continuous filtering. The Ptex mapping system was first used in the 2008 short Giago ‘Guest. Now it is the main textures mapping method in Disney productions. Be careful with Ptex files from unknown sources. The extension can be used by various programs, including harmful software. We provide information about the format and software that supports it. Visit the Ptex site for more details. Supported programs include modeling and rendering tools. Ptex allows painting models intuitively by storing separate textures per face. It enables high quality filtering between polygons with subdivision support. The open source system revolutionizes texturing. To use it, find software supporting the format. Common uses are storing paint and baking properties into meshes. For example, bake ambient occlusion into cavities. The format lists faces with all pixels, called texels. So software knows which texels apply to which faces. This enables proper paint display on proper faces.
Disney's Ptex Library
Autodesk Maya
Godot Engine