From 59bf2a52ed4cd4c6fa58b016ee6d53e081f1271e Mon Sep 17 00:00:00 2001
From: Vlad Zahorodnii <vlad.zahorodnii@kde.org>
Date: Tue, 24 Nov 2020 18:10:04 +0200
Subject: [PATCH] Initialize the supports partial update flag to false

With 870679e46fa82b76a8a9daef75a6ef87700a6ddd, if the partial update
extension is unsupported, setSupportsPartialUpdate() won't be called.

The problem is that it may leave OpenGLBackend::supportsPartialUpdate()
uninitialized, which can lead to a crash if an OpenGL render backend
tries to call eglSetDamageRegionKHR() and EGL_KHR_partial_update is
unsupported.
---
 platformsupport/scenes/opengl/backend.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/platformsupport/scenes/opengl/backend.h b/platformsupport/scenes/opengl/backend.h
index a3fbf8a185..6e4ab45857 100644
--- a/platformsupport/scenes/opengl/backend.h
+++ b/platformsupport/scenes/opengl/backend.h
@@ -295,7 +295,7 @@ private:
     /**
      * @brief Whether the backend supports EGL_KHR_partial_update
      */
-    bool m_havePartialUpdate;
+    bool m_havePartialUpdate = false;
     bool m_haveSwapBuffersWithDamage = false;
     /**
      * @brief Whether the backend supports EGL_KHR_surfaceless_context.