Add glxContextForContext function to QXcbNativeInterface.

This change enables receiving the native GLXContext object that is used
by a QOpenGLContext in case of GLX.
This clearly is non-public api that is only meant to be used as a
last resort for cases where it is really necessary to get hold of
a native context object.

Change-Id: I7f1f974f18063ed334b8034a0c0192c875c10cec
Reviewed-by: Samuel Rødal <samuel.rodal@digia.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/src/plugins/platforms/xcb/qxcbnativeinterface.h b/src/plugins/platforms/xcb/qxcbnativeinterface.h
index 1223fdc39c..c15d00255a 100644
--- a/src/plugins/platforms/xcb/qxcbnativeinterface.h
+++ b/src/plugins/platforms/xcb/qxcbnativeinterface.h
@@ -58,7 +58,8 @@ public:
         Connection,
         Screen,
         GraphicsDevice,
-        EglContext
+        EglContext,
+        GLXContext
     };
 
     QXcbNativeInterface();
@@ -76,6 +77,7 @@ public:
     void *screenForWindow(QWindow *window);
     void *graphicsDeviceForWindow(QWindow *window);
     static void *eglContextForContext(QOpenGLContext *context);
+    static void *glxContextForContext(QOpenGLContext *context);
 
 private:
     const QByteArray m_genericEventFilterType;