WebAssembly not rendering

[ollika]

I would actually prefer to always give a callbacks to SDL for drawing a frame etc. instead of insisting on having full control of the main loop. These days there are so many environments that don’t like to give apps full control of their own main loop - emscripten being the worst example requiring some ugly ifdef kludge and leading to confusion like this.

In other words, instead of providing special callbacks only for emscripten, SDL would allow the user to set similar callbacks that are used in all environments. If no callbacks are set, SDL works as it used to and the user still has full control of the main loop (so control freaks can still write their own loop, but the app would be less portable).

A bit off topic, but in the same vain I think the stuff related to redefining main and the whole SDL_main library create more confusion for the minor benefit they provide. I digged up an old post I made about this:

@ollika

Maybe I haven’t really thought this though, but if I was starting from scratch I’d maybe dump the whole separate SDL_main library and do something a lot of header only libraries do: basically the user would define something before including sdl in EXACTLY one source file and the include would add the appropriate entry point code there. So on windows a WinMain would be inserted to that file and on android a jni callback and so on.

Usage would be something like:

#define SDL_ENTRY_POINT
#include <SDL.h>

int SDL_Main(int argc, char **argv) {
    return 0;
}

I’d also probably drop abusing int main(int argc, char **argv) because the redefinition seems to just add confusion and I don’t really see the benefit in it.

Now that I think of it, this kind of system would probably be possible to add in addition to the current stuff. So you would just not link to SDL_main if you defined the entry point already like above.

This could be added already and maybe in the next major version the whole SDL_main library could be dropped (You probably figured out already that I really hate libSDL_main).