[MPlayer-users] Bicubic scaling in vo_gl - does it ever work?

[Reimar Döffinger]

Hi,
On Wed, Jun 14, 2006 at 09:51:51PM +0400, Vladimir Mosgalin wrote:
> With real file, the results are er.. strange.

Sorry for giving you a bad commandline, it missed -demuxer rawvideo.
This one is actually tested (couldn't test the other one since windows
has no /dev/zero):
mplayer -vf test,crop=100:70:0:0 -geometry 1000x700+0+0 -vo
gl:yuv=2:lscale=1 -demuxer rawvideo -rawvideo w=100:h=100 /dev/zero 

> Both with yuv=2 and yuv=3 there are no problems. However, should I try
> to change brightness, contrast or saturation, I immediately see those
> broken lines defects. Even when I don't change them, i.e. my config is

This is weird, since none of all these have any effect on the bicubic
interpolation code...
One thing you could try: in libvo/gl_common.c, change
OPTION ARB_precision_hint_fastest;
to
OPTION ARB_precision_hint_nicest;

Can anyone else reproduce these problems? If yes, can you also test
under windows and see if that makes a difference?

> So, what do you think?

That I can't make any sense of it...

Greetings,
Reimar Döffinger