Over a two-month period, contributed to both playcanvas/engine and gpuweb/gpuweb by delivering three features focused on graphics and API design. In playcanvas/engine, optimized WebGPU fragment shader performance by refactoring WGSL code to reduce register pressure and emitting builtins only when referenced, improving frame times and scalability for complex materials. For gpuweb/gpuweb, proposed and advanced features such as view instancing for multi-view rendering and multisampled texture array support, enhancing resource management and rendering efficiency. Work involved deep collaboration, technical writing, and code review, utilizing JavaScript, WGSL, and expertise in shader programming, rendering techniques, and WebGPU architecture.