[Xcb] No opengl3 rendering

[Peter Harris]

On 3 November 2015 at 18:41, Remi Thebault wrote:
> My installed mesa is 10.1.3.
> the call to xcb_register_for_special_xge is present in the source base.
>
> However, my client receive some unknown event type:
> 1st frame:  12   102    103
> all other frames: 12   102
>
> My render code is in expose (code 12) and rendering only works in the first
> frame.
> Are those 102 and 103 the special events?

Probably. (Extension events can change based on which other extensions
the server has loaded. xdpyinfo -queryExtensions can confirm)

See the last comment in
https://bugs.freedesktop.org/show_bug.cgi?id=35945 for a way to pass
unrecognized events to your libGL (or any other registered Xlib
handlers).

> If I do not call XSetEventQueueOwner, I only receive event 12 and everything
> seems to work, even when I use the XCB event queue API.
> Is this portable?

I don't think that's portable. If nothing else, it's entirely possible
for Xlib to have retrieved events that the xcb API will never see.

Peter Harris