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-rw-r--r--src/opengl/qglframebufferobject.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/opengl/qglframebufferobject.cpp b/src/opengl/qglframebufferobject.cpp
index d636da91b5..bd8bc2f64a 100644
--- a/src/opengl/qglframebufferobject.cpp
+++ b/src/opengl/qglframebufferobject.cpp
@@ -1114,6 +1114,9 @@ QGLFramebufferObjectFormat QGLFramebufferObject::format() const
\fn QImage QGLFramebufferObject::toImage() const
Returns the contents of this framebuffer object as a QImage.
+
+ On QNX the back buffer is not preserved when a buffer swap occures. So this function
+ might return old content.
*/
QImage QGLFramebufferObject::toImage() const
{