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[directfb-dev] Re: [PATCH] G450/G550 detection for CRTC2
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[directfb-dev] Re: [PATCH] G450/G550 detection for CRTC2

On Sun, Dec 22, 2002 at 08:24:14PM -0500, wrote:
> On Sun, Dec 22, 2002 at 07:58:22PM +0200, Ville Syrjälä wrote:
> > 
> > 1600x1200
> Excellent!

The bad thing is that I can't have many windows open when I start mplayer
or DirectFB can't allocate video memory when blitting. I think the surface
manager should throw out less used stuff but this doesn't seem to happen
consistently. Perhaps the other windows are really busy somehow or video
memory may be too fragmented. This is problem happens @ 32bpp with a 32MB
card. With a 16 MB card I can't even run XDirectFB @ 32bpp since there
won't be enough memory left for the CRTC2 buffers.

> > I've attached a patch againgst the latest cvs
> > mplayer. The patch has my pthread vsync stuff included too
> What's the idea behind putting the vsync stuff in a thread?

It allows mplayer to do something useful while we wait for the vsync.
Unfortunately this doesn't help as much as I'd like. Flip() waits for the
card to become idle before flipping and since we do Blit() and Flip() in
this order the blit will keep the card busy for some time. The wait for
idle function polls the status register in a tight loop which keeps
my CPU busy. Perhaps it would work better with a dual CPU machine.

Ville Syrjälä

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