[MPlayer-dev-eng] draw_alpha_* reads from video mem :((

[Arpi]

Hi,

> While looking into some performance problems (slowdown with subtitles;
> fine without them), I realized that the draw_alpha_* functions read
> from the same destination image they're writing to. This is a very bad
> thing if the image is in video memory. I'd like to change it so that
> when direct rendering isn't in use, the vo driver can use the mpi
> passed to it from the filter layer as the source for draw_alpha_*
> (modifying draw_alpha_* to take a third buffer, sourceimage). However,
> this will not work with slices as far as I can tell, since the vo
> driver never seems to get the mpi. Is there any reasonable way around
> this problem?

yes, -vop expand=-1:-1:-1:-1:1


A'rpi / Astral & ESP-team

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Developer of MPlayer, the Movie Player for Linux - http://www.MPlayerHQ.hu
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