Hi all,
I've got visual artefact with xmame when running games with scrollings.
It seems to be a double buffering problem. The problem appears using xv but also with dga and sdl (it's even worst with dga and sdl than with xv)
I tried mame32 under windows and I experienced the same problem. This kind of problem is more easy to see in shadow dancer by example (the scene between levels : the panel scrolling from right to left then back from left to right, you can easily see that the frame has been displayed, but the first part is the next frame and it has not yet been drawed completely so at the bottom of the picture you can see the previous frame, this results as a splitting line that makes a pixel delay in scrollings)
But when I activated the mame32 "triple buffering" option, the problem disapeared !!
I don't find this option under xmame. Is there an equivalent or something ? Is there a plan to include this option in xmame or is it impossible due to X limitations ?
I see the same thing here. There used to be a double buffering option for the SDL target, but it's no longer available. I'm not sure what the best solution would be -- either to add the equivalent of MAME32's triple buffering, or to somehow sync the drawing to the monitor's refresh. (The first option sounds like it'd be less troublesome all around.) I'll file your message in my xmame todo folder and make an attempt at a solution eventually.
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