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emscripten: Introduce SDL_HINT_EMSCRIPTEN_ASYNCIFY

Browse source 
See https://github.com/emscripten-core/emscripten/issues/10746

and

https://github.com/emscripten-ports/SDL2/pull/112

Fixes Bugzilla #4997.
This commit is contained in:
Sylvain Beucler 2020-06-27 16:25:47 -04:00
parent 01af7b0254
commit e594a6738a
4 changed files with 22 additions and 4 deletions
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5
src/timer/unix/SDL_systimer.c
View file

@ -29,6 +29,7 @@
#include "SDL_timer.h"
#include "SDL_assert.h"
#include "SDL_hints.h"
#include "../SDL_timer_c.h"
#ifdef __EMSCRIPTEN__
@ -191,8 +192,8 @@ void
SDL_Delay(Uint32 ms)
{
#ifdef __EMSCRIPTEN__
if (emscripten_has_asyncify()) {
/* pseudo-synchronous pause */
if (emscripten_has_asyncify() && SDL_GetHintBoolean(SDL_HINT_EMSCRIPTEN_ASYNCIFY, SDL_TRUE)) {
/* pseudo-synchronous pause, used directly or through e.g. SDL_WaitEvent */
emscripten_sleep(ms);
return;
}