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-rw-r--r--src/gui/opengl/qopenglframebufferobject.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/gui/opengl/qopenglframebufferobject.cpp b/src/gui/opengl/qopenglframebufferobject.cpp
index cc829df950..7fb6815120 100644
--- a/src/gui/opengl/qopenglframebufferobject.cpp
+++ b/src/gui/opengl/qopenglframebufferobject.cpp
@@ -1112,6 +1112,9 @@ Q_GUI_EXPORT QImage qt_gl_read_framebuffer(const QSize &size, bool alpha_format,
\fn QImage QOpenGLFramebufferObject::toImage() const
Returns the contents of this framebuffer object as a QImage.
+
+ Will try to return a premultiplied ARBG32 or RGB32 image. Since 5.2 it will fall back to
+ a premultiplied RGBA8888 or RGBx8888 image when reading to ARGB32 is not supported.
*/
QImage QOpenGLFramebufferObject::toImage() const
{