This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The WebGL2RenderingContext.waitSync() method of the WebGL 2 API returns immediately, but waits on the GL server until the given WebGLSync object is signaled.
The method is a no-op in the absence of the possibility of synchronizing between multiple GL contexts.
void gl.waitSync(sync, flags, timeout);
syncWebGLSync object on which to wait on.GLbitfield specifying a bitwise combination of flags controlling the flushing behavior. Must be 0 (exists for extensions only).GLint64 specifying a timeout the server should wait before continuing. Must be gl.TIMEOUT_IGNORED.None.
var sync = gl.fenceSync(gl.SYNC_GPU_COMMANDS_COMPLETE, 0); gl.waitSync(sync, 0, gl.TIMEOUT_IGNORED);
| Specification | Status | Comment |
|---|---|---|
| WebGL 2.0 The definition of 'waitSync' in that specification. | Editor's Draft | Initial definition for WebGL. |
| OpenGL ES 3.0 The definition of 'glWaitSync' in that specification. | Standard | Man page of the (similar) OpenGL API. |
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | 56 | No | 51 | No | 43 | No |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
|---|---|---|---|---|---|---|---|
| Basic support | 58 | 58 | No | 51 | No | 43 | No |
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/waitSync