GtkGLArea broken by backing store

[Janne Lof <jlof mail student oulu fi>]

Hi,

Addition of backing store to gtk+-1.3.x has broken gtkglarea
widget. OpenGL commands draw to gl widget correctly, but immediatedly
after the drawing is finished everything is covered with background
color. If I comment out #define USE_BACKING_STORE line in gdk/gdkwindow.c
then everything works fine.

Is there any way to disable backing store of a widget or otherwise get
around this problem?



-- 
Janne Löf
mail : jlof@mail.student.oulu.fi
www  : http://www.student.oulu.fi/~jlof/