Xenia is an experimental Xbox 360 emulator. "Patches" (often .patch.toml files) are used to:

Disable intrusive effects like motion blur, depth of field, or bloom.

Xenia patches are essentially modifications made to the emulator's codebase to enhance its performance, fix bugs, or add new features. These patches are created by the community, including developers and enthusiasts, who contribute to the project by submitting their changes to GitHub. The patches are then reviewed, tested, and merged into the main Xenia repository, ensuring that the emulator continues to improve.