Re: [hatari-devel] Display problem in Paradox latest demo

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 30/12/2013 17:50, Anders Eriksson a écrit :

> Now that i tried that as well, it seems like I found a little bug or
> rather little problem that hasn't been noticed before. As the final
> screen have a few scanlines in ST-MEDIUM resolution, the window will
> re-size (if you run it unzoomed in ST-LOW, like 416x288). The re-size
> will be to 640x400 to fit the ST-MED. However, if there are graphics in
> the borders (or rasters for that matter) it will be invisible. Maybe the
> ST-MED zoom should follow the 416x288 border settings and do it 832x576?
> In this particular demo you can see the problem if you start the demo
> with unzoomed window and wait for the end part - the lower border
> graphcis will dissapear.

Yes, mixing low res and med res in the same screen can give strange 
results when you want to adapt the final window size to fit best, 
there's no real easy solution for all cases.

The best solution I would see would be to do an internal rendering of 
the screen in a kind of approx 832x288, as would a normal crt, with 
double low res pixels on X axis, and singl med res pixels on X axis 
(this would allow to handle/mix med res overscan as well as low res 
overscan with the same buffer)

Then, map this internal rendering to the desired output window on screen 
(with possible crop+centering), where this window could be any 
width/eight, with some predefined x2 or x4 zoom settings for example.

This would give something very similar to the buttons you had at the 
rear of the CRT monitors, where you could center the image X or Y, and 
strech it on X or Y axis too.

That's my long term plan for internal video rendering in Hatari, but 
it's far to be done (or even started in fact :) )

For the moment, you can record the video and crop the bottom part with 
unneeded med res gfx.

Nicolas