Worked on the bevyengine/bevy repository to enhance the stability and flexibility of Bevy’s physically based rendering (PBR) system using Rust. Addressed a crash in the Screen Space Reflections Plugin by ensuring the code no longer referenced a missing default deferred lighting pass, which improved compatibility with diverse user lighting setups. Additionally, exposed Tonemapping LUT binding indices, enabling developers to implement custom deferred lighting passes without compromising stability. The work focused on graphics programming and game development, emphasizing robust rendering pipelines and greater configurability for users. These targeted improvements contributed to a more stable and customizable rendering experience in Bevy.