nanogui: Screen update methods
Subject:
Re: Screen update methods
From:
"Aaron J. Grier" ####@####.####
Date:
25 May 2007 22:47:28 +0100
Message-Id: <20070525214724.GB26937@mordor.unix.fryenet>
On Fri, May 25, 2007 at 07:36:11AM -0800, Junior wrote:
> I understood that the idea of using an offscreen pixmap is such that I
> can blit the entire screen and not draw individual pixels. Is this not
> true?
this is true, but only if you have hardware that supports an actual blit
operation. the best you can get without hardware acceleration is an
optimized block copy, which again, depending on your hardware, may end
up copying pixel-by-pixel.
your problem may be something as simple as needing vertical retrace
synchronization before copying to the screen.
--
Aaron J. Grier | Frye Electronics, Tigard, OR | ####@####.####
