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-rw-r--r--src/widgets/kernel/qopenglwidget.cpp6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/widgets/kernel/qopenglwidget.cpp b/src/widgets/kernel/qopenglwidget.cpp
index b8df25b38f..9bfdc62e60 100644
--- a/src/widgets/kernel/qopenglwidget.cpp
+++ b/src/widgets/kernel/qopenglwidget.cpp
@@ -104,6 +104,12 @@ QT_BEGIN_NAMESPACE
non-sharable. To overcome this issue, prefer using
QSurfaceFormat::setDefaultFormat() instead of setFormat().
+ \note Calling QSurfaceFormat::setDefaultFormat() before constructing
+ the QApplication instance is mandatory on some platforms (for example,
+ OS X) when an OpenGL core profile context is requested. This is to
+ ensure that resource sharing between contexts stays functional as all
+ internal contexts are created using the correct version and profile.
+
\section1 Painting Techniques
As described above, subclass QOpenGLWidget to render pure 3D content in the