From d143f6e3c4e5227b2c0d20828f26ec5f5fdae696 Mon Sep 17 00:00:00 2001
From: Kai Uwe Broulik <kai_uwe.broulik@mbition.io>
Date: Tue, 24 May 2022 14:45:46 +0200
Subject: [PATCH] backends/x11: Arm vsync monitor in EglX11Backend

This was originally on `EglX11Backend::endFrame` and got lost
as part of refactoring in 7358daa9, breaking nested `kwin_wayland`
rendering with GL.

Signed-off-by: Victoria Fischer <victoria.fischer@mbition.io>
Tested-by: Merge Service <https://invent.kde.org/plasma/kwin/-/merge_requests/2458>
Part-of: <https://invent.kde.org/plasma/kwin/-/merge_requests/2458>
---
 src/backends/x11/windowed/egl_x11_backend.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/backends/x11/windowed/egl_x11_backend.cpp b/src/backends/x11/windowed/egl_x11_backend.cpp
index 4f617e779a..67c9fb5a6f 100644
--- a/src/backends/x11/windowed/egl_x11_backend.cpp
+++ b/src/backends/x11/windowed/egl_x11_backend.cpp
@@ -102,6 +102,8 @@ bool EglX11Backend::createSurfaces()
 
 void EglX11Backend::present(Output *output)
 {
+    static_cast<X11WindowedOutput *>(output)->vsyncMonitor()->arm();
+
     const auto &renderOutput = m_outputs[output];
     presentSurface(renderOutput->surface(), renderOutput->lastDamage(), output->geometry());
 }