Implement isSharing() and isValid() methods for QCocoaGLContext

Shared resources may have been used when initializing NSOpenGLContext
but QCocoaGLContext did not implement isSharing(). This caused
default implementation to return false always and therefore shared
resource test case failed.

Implemented also another missing method, isValid().

Task-number: QTBUG-23061

Change-Id: Ia912450035b584ea90a02a7d88d6ae531c3cbadf
Reviewed-by: Morten Johan Sørvig <morten.sorvig@nokia.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/plugins/platforms/cocoa/qcocoaglcontext.h b/src/plugins/platforms/cocoa/qcocoaglcontext.h
index b8582022f6..4f80511f61 100644
--- a/src/plugins/platforms/cocoa/qcocoaglcontext.h
+++ b/src/plugins/platforms/cocoa/qcocoaglcontext.h
@@ -71,10 +71,14 @@ public:
     static NSOpenGLPixelFormat *createNSOpenGLPixelFormat(const QSurfaceFormat &format);
     NSOpenGLContext *nsOpenGLContext() const;
 
+    bool isSharing() const;
+    bool isValid() const;
+
 private:
     void setActiveWindow(QWindow *window);
 
     NSOpenGLContext *m_context;
+    NSOpenGLContext *m_shareContext;
     QSurfaceFormat m_format;
     QWeakPointer<QWindow> m_currentWindow;
 };