# Advanced

- [Empirical testing - comparing output quality](/pixray-docs/advanced/empirical-testing-comparing-output-quality.md)
- [Developing a custom loss](/pixray-docs/advanced/developing-a-custom-loss.md)
- [Developing a custom drawer](/pixray-docs/advanced/developing-a-custom-drawer.md)
- [Developing a custom image filter](/pixray-docs/advanced/developing-a-custom-image-filter.md)
- [Developing a function video movement](/pixray-docs/advanced/developing-a-function-video-movement.md)
- [Modifying Pixray](/pixray-docs/advanced/modifying-pixray.md)