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.
Syntax
void gl.waitSync(sync, flags, timeout);
Parameters
sync- A
WebGLSyncobject on which to wait on. - flags
- A
GLbitfieldspecifying a bitwise combination of flags controlling the flushing behavior. Must be0(exists for extensions only). - timeout
- A
GLint64specifying a timeout the server should wait before continuing. Must begl.TIMEOUT_IGNORED.
Return value
None.
Examples
var sync = gl.fenceSync(gl.SYNC_GPU_COMMANDS_COMPLETE, 0); gl.waitSync(sync, 0, gl.TIMEOUT_IGNORED);
Specifications
| 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. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
| Desktop | Mobile | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic support | Chrome Full support 56 | Edge No support No | Firefox Full support 51 | IE No support No | Opera Full support 43 | Safari No support No | WebView Android Full support 58 | Chrome Android Full support 58 | Edge Mobile No support No | Firefox Android Full support 51 | Opera Android Full support 43 | Safari iOS No support No | Samsung Internet Android Full support 7.0 |
Legend
- Full support
- Full support
- No support
- No support