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WebGL2RenderingContext: clientWaitSync() method - Web APIs | MDN
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WebGL2RenderingContext: clientWaitSync() method
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2021.
Note: This feature is available in Web Workers.
The WebGL2RenderingContext.clientWaitSync() method of the
WebGL 2 API blocks and waits for a
WebGLSync object to become signaled or a given timeout to be passed.
Syntax
js
clientWaitSync(sync, flags, timeout)
Parameters
sync-
A
WebGLSyncobject on which to wait on. flags-
A
GLbitfieldspecifying a bitwise combination of flags controlling the flushing behavior. May begl.SYNC_FLUSH_COMMANDS_BIT. timeout-
A
GLint64specifying a timeout (in nanoseconds) for which to wait for the sync object to become signaled. Must not be larger thangl.MAX_CLIENT_WAIT_TIMEOUT_WEBGL.
Return value
A GLenum indicating the sync object's status.
gl.ALREADY_SIGNALED: Indicates that the sync object was signaled when this method was called.gl.TIMEOUT_EXPIRED: Indicates that thetimeouttime passed and that the sync object did not become signaled.gl.CONDITION_SATISFIED: Indicates that the sync object was signaled before thetimeoutexpired.gl.WAIT_FAILED: Indicates that an error occurred during the execution.
Examples
js
const sync = gl.fenceSync(gl.SYNC_GPU_COMMANDS_COMPLETE, 0);
const status = gl.clientWaitSync(sync, 0, 0);
Specifications
| Specification |
|---|
| WebGL 2.0 Specification # 3.7.14 |
Browser compatibility
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