Re: Double buffering flicker on window resize.

Hi John,

On Mon, Feb 29, 2016 at 09:16:03AM +0200, John Found wrote:
> Hi, dillo developers!
> 
> I observed another nasty bug in Dillo dev-3.1
> 
> Maybe it is known. If so, excuse my ignorance. :)
> 
> When the option buffered_drawing=2 for double buffering and the browser window is resized
> by the user, it seems that the back buffer is drawn on the screen too early after the reallocation and is full of garbage instead of the rendered page. 
> 
> This way, during the resizing, very heavy flicker appears, which IMHO is not good for double buffering drawing scheme.

with  buffered_drawing=2 dillo uses the Fl_Double_Window class from
FLTK, so the result should be similar to e.g. the test/fonts program
from FLTK. Do you have it available and can test how that program
feels when resizing on your system?
In my setup I only get some light flickering at the scroll bars with
buffered_drawing=2. Whereas I see heavy flickering with
buffered_drawing=0.
Do you see any difference between buffered_drawing=0 and
buffered_drawing=2?

Cheers,
Johannes