Re: [pygame] flickering

[Robert Mark Waugh <robert@waugh.com>]

azazel wrote:

> hi folks, I've a problem with pygame(it occurs even with C+SDL) on
> Windows, if I set video mode with DOUBLEBUF | FULLSCREEN flags, using
> flip() to update, every surface drawn on the screen that isn't redrawn
> every frame start flickering, this doesn't happen on Linux, perhaps
> because video memory isn't available. What can I do? 
> thank you, sorry for bad english
>  
azazel:

I've found on windows using pygame.display.update() is much faster than 
using doublebuffering/flip().  Only when I need to do a full screen 
update do I flip a buffered display up (like I'm performing an effect on 
the entire/most of the display).  The RenderUpdates sprite class 
facilitates this a great deal, but AFAIK every drawing and blitting 
action returns a rect which can be passed through to the update method 
for the display.  I tend to leave double buffering and hwsurface off at 
this point.

Is there any guidance from pete and other pygame gurus out there on when 
to use what?

robert