2018 The Khronos Group Inc. eglWaitSync 3G eglWaitSync Wait in the server for a sync object to be signalled EGLBoolean eglWaitSync (EGLDisplay display EGLSync sync EGLint flags display Specifies the EGL display connection. sync Specifies the sync object to wait on. flags Specifies flags controlling wait behavior. eglWaitSync is similar to eglClientWaitSync, but instead of blocking and not returning to the application until sync is signaled, eglWaitSync returns immediately. On success, EGL_TRUE is returned, and the server for the client API context will block until sync is signaled. Note: eglWaitSync allows applications to continue to queue commands from the application in anticipation of the sync being signaled, potentially increasing parallelism between application, client API server code, and the GPU. The server only blocks execution of commands for the specific context on which eglWaitSync was issued; other contexts implemented by the same server are not affected.. sync has the same meaning as for eglClientWaitSync. flags must be 0. eglWaitSync requires support from the bound client API, and will not succeed unless the same client API properties described for creation of fence syncs in eglCreateSync are satisfied. eglWaitSync returns EGL_FALSE on failure, and does not cause the server for the client API context to block. If the current context for the currently bound client API does not support server waits, an EGL_BAD_MATCH error is generated. If no context is current for the currently bound client API (i.e., eglGetCurrentContext returns EGL_NO_CONTEXT), an EGL_BAD_MATCH error is generated. If display does not match the EGLDisplay passed to eglCreateSync when sync was created, the behavior is undefined. If sync is not a valid sync object for display, an EGL_BAD_PARAMETER error is generated. If flags is not 0, an EGL_BAD_PARAMETER error is generated. eglWaitSync is available only if the EGL version is 1.5 or greater. eglClientWaitSync, eglCreateSync, eglGetCurrentContext