Update QQuickPaintedItem::FastFBOResizing docs.

Change-Id: I129307816adcbddcf1cbf6013ef736c03b130f19
Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>

1 files changed, 6 insertions, 5 deletions

diff --git a/src/quick/items/qquickpainteditem.cpp b/src/quick/items/qquickpainteditem.cpp
index 8d93c577ab..033000c159 100644
--- a/src/quick/items/qquickpainteditem.cpp
+++ b/src/quick/items/qquickpainteditem.cpp
@@ -109,11 +109,12 @@ public:
     This enum describes flags that you can enable to improve rendering
     performance in QQuickPaintedItem. By default, none of these flags are set.
 
-    \value FastFBOResizing If your item gets resized often and you are using the
-    QQuickPaintedItem::FramebufferObject render target, set this flag to true to reduce the
-    item resizing time at the cost of using more graphics memory. Resizing a Framebuffer object
-    is a costly operation, by enabling this property the Framebuffer Object will use a texture
-    larger than the actual size of the item to avoid as much as possible resizing it.
+    \value FastFBOResizing Resizing an FBO can be a costly operation on a few
+    OpenGL driver implementations. To work around this, one can set this flag
+    to let the QQuickPaintedItem allocate one large framebuffer object and
+    instead draw into a subregion of it. This saves the resize at the cost of
+    using more memory. Please note that this is not a common problem.
+
 */
 
 /*!