https://bugs.kde.org/show_bug.cgi?id=3D343551

Thomas L=C3=BCbking <thomas.luebking@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|crash                       |normal
              Flags|                            |NVIDIA+

--- Comment #17 from Thomas L=C3=BCbking <thomas.luebking@gmail.com> ---
Ok, let's be more explicit on our needs ;-)

loki:/src/KDE4/kwin/> git diff scene_opengl.cpp
diff --git a/scene_opengl.cpp b/scene_opengl.cpp
index 7584dd5..08256be 100644
--- a/scene_opengl.cpp
+++ b/scene_opengl.cpp
@@ -120,6 +120,8 @@ SyncObject::SyncObject()

 SyncObject::~SyncObject()
 {
+//     if (m_state =3D=3D Waiting)
+        glFinish();
     xcb_sync_destroy_fence(connection(), m_fence);
     glDeleteSync(m_sync);

@@ -412,6 +414,7 @@ SceneOpenGL::~SceneOpenGL()
     // do cleanup after initBuffer()
     SceneOpenGL::EffectFrame::cleanup();
     if (init_ok) {
+        m_backend->makeCurrent();
         delete m_syncManager;

         // backend might be still needed for a different scene

--=20
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