RE: [PATCH v2 2/8] ui/egl: Add egl helpers to help with synchronization

["Kasireddy, Vivek" <vivek.kasireddy@intel.com>]

Hi Gerd,
 
> > +void egl_dmabuf_create_fence(QemuDmaBuf *dmabuf)
> > +{
> > +    if (dmabuf->sync) {
> > +        dmabuf->fence_fd = eglDupNativeFenceFDANDROID(qemu_egl_display,
> > +                                                      dmabuf->sync);
> > +        eglDestroySyncKHR(qemu_egl_display, dmabuf->sync);
> > +        dmabuf->sync = NULL;
> > +    }
> > +}
> 
> > +void egl_dmabuf_wait_sync(QemuDmaBuf *dmabuf)
> > +{
> 
> Hmm, still the blocking wait.  Can't you do something like
[Kasireddy, Vivek] Right, it is a blocking wait; but this gets called from a new GTK thread
that does the actual drawing. 

> "qemu_set_fd_handler(dmabuf->fence_fd, ...)" to avoid the
> eglClientWaitSyncKHR() completely?
[Kasireddy, Vivek] Yeah, I think this is also doable; let me look into it.

Thanks,
Vivek
> 
> take care,
>   Gerd