WebGLSync

The WebGLSync interface is part of the WebGL 2 API and is used to synchronize activities between the GPU and the application.

When working with WebGLSync objects, the following methods of the WebGL2RenderingContext are useful:

• WebGL2RenderingContext.fenceSync()
• WebGL2RenderingContext.deleteSync()
• WebGL2RenderingContext.isSync()
• WebGL2RenderingContext.clientWaitSync()
• WebGL2RenderingContext.waitSync()
• WebGL2RenderingContext.getSyncParameter()

in this example, gl must be a WebGL2RenderingContext. WebGLSync objects are not available in WebGL 1.

var sync = gl.fenceSync(gl.SYNC_GPU_COMMANDS_COMPLETE, 0);

• WebGLRenderingContext.finish()