Optimizing for WebAssembly

Optimizing your WebAssembly code is partially about decision making and experimenting. It is about discovering what works for your particular game or app. When WebAssembly was designed, for instance, a decision was made to have the WebAssembly bytecode run on a virtual stack machine. The designers of WebAssembly made this choice because they felt that they could justify the small loss of performance with a significantly smaller bytecode download size. Every piece of code has a bottleneck somewhere. In OpenGL applications that bottleneck will be interfacing with the GPU. The bottleneck for your application may be the memory, or it may be CPU-bound. Optimizing code, in general, is about determining what the holdup is and deciding what trade-off you would like to make to improve things. If you optimize for download size, you may lose some runtime...