At least document QImage stuff.

diff --git a/RELEASE-NOTES b/RELEASE-NOTES
index dbb94ca607c36e336c3666bf9f8b8943c77fe190..17d998d188b534fbc0f0d470dd8cba7bcaffd47f 100644 (file)
--- a/RELEASE-NOTES
+++ b/RELEASE-NOTES
@@ -87,3 +87,8 @@ Known issues in version 2.1.0
 Caveats when upgrading from earlier versions to 2.1.x
 -------------------------------------------------------
 
+In order to improve reported scrolling slowness, we changed the way screen
+painting is done. This, however, can slow down the performance on remote
+X connections and we provide RC_USE_QIMAGE variable, which brings back
+the old way of painting (when set to false).
+