Added private API for enabling sharing between the QQuickwindow instances.

This API is primarily a hook which is needed by the Qt WebEngine to
set up sharing with the scene graph's OpenGL contexts.

Change-Id: I5bb03abd9ab99f502db8e413fe838a8b30365b8d
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/src/quick/scenegraph/qsgcontext.cpp b/src/quick/scenegraph/qsgcontext.cpp
index 4fbefb37d8..c6dbf350b6 100644
--- a/src/quick/scenegraph/qsgcontext.cpp
+++ b/src/quick/scenegraph/qsgcontext.cpp
@@ -117,8 +117,12 @@ public:
     QSGContext::AntialiasingMethod antialiasingMethod;
     bool distanceFieldDisabled;
     QSGDistanceFieldGlyphNode::AntialiasingMode distanceFieldAntialiasing;
+
+    static QOpenGLContext *sharedOpenGLContext;
 };
 
+QOpenGLContext *QSGContextPrivate::sharedOpenGLContext = 0;
+
 class QSGTextureCleanupEvent : public QEvent
 {
 public:
@@ -170,6 +174,20 @@ QSGContext::~QSGContext()
 {
 }
 
+/*!
+ * This function is used by the Qt WebEngine to set up context sharing
+ * across multiple windows. Do not use it for any other purpose.
+ */
+void QSGContext::setSharedOpenGLContext(QOpenGLContext *context)
+{
+    QSGContextPrivate::sharedOpenGLContext = context;
+}
+
+QOpenGLContext *QSGContext::sharedOpenGLContext()
+{
+    return QSGContextPrivate::sharedOpenGLContext;
+}
+
 void QSGContext::renderContextInitialized(QSGRenderContext *renderContext)
 {
     Q_D(QSGContext);