Am 22.09.2010 06:40, schrieb Alex Deucher:
2010/9/21 Marius Gröger<marius.groe...@googlemail.com>:
On 10.09.2010 17:20 Alex Deucher wrote:
The scaler doesn't appear to work with interlaced modes as you've
noticed; I don't off hand know whether it can be made to or not.
Unfortunately, I won't have time to dig into this more for a while.
Is there public documentation available wrt this matter? www.x.org/docs/AMD/
appears to focus on 3D stuff primarily...
Not at the moment, however, you could implement underscan using the 3D
engine to do the scaling rather than the display scalers. I think you
could even do it with randr crtc transforms (which use the 3d engine).
Are you referring to xrandr --transpose? At least for me this seems to
be only partially implemented. For example:
xrandr --output HDMI-0 --mode 1920x1...@50i --transform
0.5,0,0,0,0.5,0,0,0,1
This does in fact render the image scaled down by 50%. However,
xrandr --verbose
yields:
HDMI-0 connected 1920x1080+0+0 (0xfd) normal (normal left inverted right
x axis y axis) 1600mm x 900mm
...
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
Translation doesn't work at all, so it's not a viable workaround.
Sigh. This is all kind of frustrating...
Regards,
Marius
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