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Code Snippets > Misc ( Created 13 March 2009 | Last Edited 13 March 2009)

Disable Desktop Compositing by Evil Roy Ferguson | No Votes
Disable Vista/7's desktop compositing in your Blitz classic game.On
Written in
Blitz
On many computers, Blitz games do not function properly with desktop compositing enabled on Vista or Windows 7. This (not-particularly-future-proof) function will disable compositing while your game is running, freeing the end-user from the tedious, difficult chore of right clicking an executable. Compositing will be re-enabled if appropriate when the game is exited. The function is a no-op on Windows XP and lower (unless somebody has an inappropriately named DLL), so it won't break your game if you use it.

Maybe this will be useful to somebody else with the same problem.

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Latest Comments

Posted : Friday, 13 March 2009, 19:23
Jayenkai


Never noticed these issues.. But then, I turned all that crap off, to be honest.
I'm using Good old Classic!

So, is this a nasty issue, or what?

Homepage : http://AGameAWeek.com
Posted : Friday, 13 March 2009, 20:11
Evil Roy Ferguson


Fairly nasty.

A game that runs at a solid 60FPS on a 400MHz Celeron alternates between 15FPS and 50FPS on an up-to-date, though not "top of the line" computer affected by this issue. The slowdown would be bad enough, but the alternation means that games are remarkably jerky. Turning off desktop compositing makes the problem go away, so it's probably responsible.

Posted : Friday, 13 March 2009, 21:40
JL235


Plenty of (non-OpenGL) games don't suffer from this problem. So this might be a B3D issue, not a Vista one.

Has it been filled as a bug with Blitz Research Labs?

Homepage : http://www.StudioFortress.com
Posted : Friday, 13 March 2009, 22:06
Evil Roy Ferguson


Yes, it's definitely a B3D issue -- I meant that the bug occurs only under Vista, although I see my wording was muddled in my second post (the original is a bit closer). To date, BRL has not responded to any of the bug reports dealing with this issue, so it seems unlikely to be fixed.

It's especially noticeable in programs that draw to buffers other than the back buffer.

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