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Core in version 4.6
Core since version 3.2
Core ARB extension ARB_sync

glIsSync: determine if a name corresponds to a sync object

Function Definition

 GLboolean glIsSync(GLsync sync​);
Specifies a value that may be the name of a sync object.


glIsSync returns GL_TRUE if sync​ is currently the name of a sync object. If sync​ is not the name of a sync object, or if an error occurs, glIsSync returns GL_FALSE. Note that zero is not the name of a sync object.


glIsSync is available only if the GL version is 3.2 or greater.

See Also

glFenceSync, glWaitSync, glClientWaitSync, glDeleteSync


Copyright © 2010 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999.