Revision as of 19:14, 11 October 2017

A texture atlas is a single larger texture which combines what would normally be several distinct smaller textures. This technique can be a significant performance optimisation.

This page TBD.

Performance Benefits

• Collapse several render chunks into a single chunk, reducing the number of draw calls required to render a mesh.
• Collapse several materials into one, especially across multiple meshes in a mesh library asset, allowing the meshes to benefit from material sharing and mesh stitching.

Concerns

• Texture Bleeding (when mipmapping)
• Texture Wrapping
• Over-large textures (avoid this by atlasing low LODs)

Example

• Image demonstrating the combination of two separate textured meshes into an atlas.