Description:

Glean is a suite of tools for evaluating the quality of an OpenGL
implementation and diagnosing any problems that are discovered. glean also
has the ability to compare two OpenGL implementations and highlight the
differences between them.

Who should care about glean?
- Anyone who buys or reviews graphics cards. glean gives you the ability to
compare performance, features, and image quality of different graphics cards.
Since the source code is freely available, you can customize glean to add
tests for the things that are most important to you.

- Software developers. With glean you can learn which features really work for
a given combination of hardware and driver. You can also find the timing for
basic drawing operations, mode changes, texture downloads, etc. so that you
can maximize the performance of your application.

- OpenGL driver developers. glean can increase your confidence that your driver
software is correct and efficient. It also allows you to compare a new release
to a previous release, to make sure that there are no regressions in quality
or performance.