[Openchrome-users] VT1625Table problems for 1280x720 and 1920x1080?

[Luc Verhaegen]

On Mon, Apr 09, 2007 at 12:13:09PM -0600, Philip Prindeville wrote:
> 
> If you're in interlaced mode, then yes, maybe the height should
> be doubled...
> 
> But I don't know that code well enough to say.
> 
> What does specifying 1920x1080P do?
> 
> -Philip

Apparently you're telling both the CRTC and X mode validation to only 
use half the height. At which point do you tell the CRTC that this is an 
interlaced mode?

At no point whatsoever.

Because you can't do this. The unichromes don't have the silicon to do 
interlacing themselves. Savages had the ability, unichrome dropped this.

This should be all in the tv encoder. The CRTC sees and scans out a full 
image. The FB space used is full resolution. The data pushed to the tv 
encoder is full resolution too. It's only then that the tv encoder 
scales and interpolates and sends out an interlaced signal.

Oh, and don't start complaining. Last time people endless whined about 
interlaced support in the CRTCs themselves i put some beer on it. Nobody 
claimed it yet. It's simple too, you don't even have to implement it, 
you just have to prove that it is possible.

Luc Verhaegen.
http://unichrome.sf.net/