From cfba4bacdf894708f4ae53bb67305129b1ae7b06 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Gr=C3=A4=C3=9Flin?= <mgraesslin@kde.org>
Date: Wed, 4 Mar 2015 07:54:40 +0100
Subject: [PATCH] [wayland] Reference BufferInterface in WindowPixmap

As long as our WindowPixmap uses the buffer we should have it referenced.
---
 scene.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/scene.cpp b/scene.cpp
index 0766ceea70..3d04cd2cb9 100644
--- a/scene.cpp
+++ b/scene.cpp
@@ -993,8 +993,15 @@ bool WindowPixmap::isValid() const
 void WindowPixmap::updateBuffer()
 {
     if (auto s = toplevel()->surface()) {
+        using namespace KWayland::Server;
         if (auto b = s->buffer()) {
+            if (m_buffer) {
+                QObject::disconnect(m_buffer.data(), &BufferInterface::aboutToBeDestroyed, m_buffer.data(), &BufferInterface::unref);
+                m_buffer->unref();
+            }
             m_buffer = b;
+            m_buffer->ref();
+            QObject::connect(m_buffer.data(), &BufferInterface::aboutToBeDestroyed, m_buffer.data(), &BufferInterface::unref);
         }
     }
 }