Lazily create global share context when Qt::AA_ShareOpenGLContexts is set

The requirement to set Qt::AA_ShareOpenGLContexts before creating QGuiApp
was forcing users to also set the default surface format before QGuiApp,
which prevents us from initializing a default surface format based on
the platform integration.

By creating the global share context lazily when requested via the
Qt::AA_ShareOpenGLContext application attribute we open up this
possibility.

Change-Id: I958639c997e96321013b1080c31e2533a36c13ff
Reviewed-by: Allan Sandfeld Jensen <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/opengl/qopenglwindow.cpp b/src/opengl/qopenglwindow.cpp
index 6b74aaedd70..05330dda0a4 100644
--- a/src/opengl/qopenglwindow.cpp
+++ b/src/opengl/qopenglwindow.cpp
@@ -161,7 +161,7 @@ public:
         , shareContext(shareContext)
     {
         if (!shareContext)
-            this->shareContext = qt_gl_global_share_context();
+            this->shareContext = QOpenGLContext::globalShareContext();
     }
 
     ~QOpenGLWindowPrivate();