Worked on cross-platform graphics backend enhancements for shadps4-emu/ext-SDL and libsdl-org/SDL, focusing on rendering reliability and developer tooling. Delivered Vulkan drawIndirectFirstInstance feature integration and enabled Metal validation layers in debug mode, improving early detection of API misuse and expanding advanced rendering capabilities. In libsdl-org/SDL, implemented robust suspend and resume lifecycle handling for Xbox GDK, introducing new event logic to pause and resume rendering during application state transitions. Updated tests and documentation to reflect these changes, ensuring correct usage of new APIs. Utilized C++ and Objective-C, applying expertise in GPU programming, low-level graphics, Vulkan, and Metal API development.