It's nice to see how much faster is wasm. This kind of problem would also be nice for parallelization. What's the state of multi-threading wasm? any advantage over javascript web workers?
Atomics have universal support in modern browsers.
This is primarily a single-threaded problem. Each x and y update depends directly on the previous x and y values with the x and y being used to update pixels.
At most (barring changes to the algorithm), it looks like you could calculate these on one thread and update the image on another thread.
It’s true that the problem of generating the exact same image seems to be a single-threaded problem. But I suppose the general problem of rendering an approximation of a strange attractor could be parallelized by generating images from several different starting positions and combining them.
Atomics have universal support in modern browsers.
This is primarily a single-threaded problem. Each x and y update depends directly on the previous x and y values with the x and y being used to update pixels.
At most (barring changes to the algorithm), it looks like you could calculate these on one thread and update the image on another thread.