[MPlayer-dev-eng] ATI + vidix scaler quality

[Nick Kurshev]

Hello, Alex!

On Sun, 7 Jul 2002 16:44:02 +0200 you wrote:

> <20020707164011.B21307 at localhost.localdomain.hu>; from alex at naxine.org on Sun, Jul 07, 2002 at 04:40:11PM +0200
> > <20020707162649.A21307 at localhost.localdomain.hu>; from alex at naxine.org on Sun, Jul 07, 2002 at 04:26:49PM +0200
> > > Hi,
> > > 
> > > > Alex mentioned some time ago that vidix scaling on radeon looks ugly.
> > > > Now i'v tested vidix on notebook with mach64, and the vidix scaling is
> > > > simple nearest-neighbour type (YUY2) :(
> > > > GATOS drivers (Xv) has nice scaling on the same machine, looks like
> > > > bicubic or so.
> > > hmm, i will look at the gatos source (as soon as i put my radeon back ;)
> > gatos xv's default values are:
> > OVERLAY_SCALE_CNTL	0x80000000
> > OVERLAY_EXCLUSIVE_HORZ	0
> > OVERLAY_EXCLUSIVE_VERT	0
> > SCALER_H_COEFF0		0x00002000
> > SCALER_H_COEFF1		0x0D06200D
> > SCALER_H_COEFF2		0x0D0A1C0D
> > SCALER_H_COEFF3		0x0C0E1A0C
> > SCALER_H_COEFF4		0x0C14140C
> > 
> > and for scaling:
> > OVERLAY_SCALE_CNTL	0x4000001 | (3 << 30)
> > 
> > hm, i will immediately swap my cards, the gatos driver seems to be very perfect
> ok this was for mach64, the radeon is a bit other, but note:
> it handles yuy2 and yv12 as the same in the scaler, just have a look at
> gatos/radeon_vid.c:2503
Which cvs snapshot did you mean?
> 
> -
> alex
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> 


Best regards! Nick
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