[MPlayer-dev-eng] [PATCH] very experimenal nvidia_vid

[Dmitry Baryshkov]

В Птн, 26.09.2003, в 20:48, D Richard Felker III пишет:
> On Fri, Sep 26, 2003 at 08:17:55PM +0400, Dmitry Baryshkov wrote:
> > > > > >I see another problem: vidix API must be expanded to pass bpp to vidix
> > > > > driver (for rivatv_overlay_colorkey). Also dunno, if BPP <15 or >24 are
> > > > >supported by all cards. (IIRC RIVA128 didn't support even 16bpp).
> > > > 
> > > > It is not a problem as we can read those values directly from the card.
> > > > I implemented it for nv03 but the registers for nv04 and later are
> > > > different.
> > > > Maybe the #if 0 block from rivafb helps you.
> > > Will look at it. BTW: do you mean rivafb from rivatv, or from kernel?
> > Ok. 0x1c9 always return 0x0. Others regs don't help.
> > right BPIXEL seems to be 0x724, but... reading from it from X with
> >  nvidia driver locks the whole box. Only SysRq helps :(nv driver works)
> > Suppose I (or somebody other) will write implementation of bpp detection
> > but it must be disable by default.
> > Anyway, reading from PCRTC:0x28 helps, but it can't detect 15bpp mode.
> > So, colorkey will be computed wrong, and overlay won't work.
> > Maybe we should switch VIDIX from magneta colorkey to g-b only?
> 
> IMO just disable colorkey or set it to black. The problems with
> picking the right rgb pixel value and the ugly magenta flashes users
> observe briefly between movies just aren't worth it to make the window
> overlap right. If you insist on using color key, at least use
> r=0,g=0,b=1 so it's simple...
I don;t think, that using coordinate keying is really good (we can use
 it. It's a matter of changing 1 to 0 and back). Also the only place,
 that insists on color keying with magneta is VIDIX :)
> 
> Rich

-- 
With best wishes
Dmitry Baryshkov

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