[ scummvm-Feature Requests-751850 ] the uppermost scanline: better interpolation

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Thu Jun 12 12:40:58 CEST 2003


Feature Requests item #751850, was opened at 2003-06-10 12:52
Message generated for change (Comment added) made by logicdeluxe
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 4
Submitted By: Marek Roth (logicdeluxe)
Assigned to: Nobody/Anonymous (nobody)
Summary: the uppermost scanline: better interpolation

Initial Comment:
In interpolated modes like 2xsai, super2xsai and
supereagle, the uppermost line is a bit thinner then
the rest of the screen. Obviously, this is because no
interpolation to the preceeding line takes place. This
looks a bit ugly with MM, ZAK and Indy3 where the
dialoges are displayed at the top.
The solution to this problem might be interpolating the
first scanline with a black dummy line in top of it.
The whole screen would be shifted downwards one half
line of the game graphics. Finaly the last scanline
would be thinner, the same way the first line
originally was, but this should be no problem, since it
would be much less noticable then it was in those text
displays.

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>Comment By: Marek Roth (logicdeluxe)
Date: 2003-06-12 12:40

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Here is a screen shot in super2xsai made with ScummVM
0.4.2cvs Built on Jun 11 2003 17:32:15.
I let a slight border, so it comes closer to the full screen
look. There are no lines cropped, it is just the way it also
looks at full screen.
Expecially look at the capital "R"'s and compare them
between the first and the 2nd text line. Get the idea? The
first line just doesn't look that nice.
Btw. this problem doesn't appear in advmame2x.

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Comment By: Max Horn (fingolfin)
Date: 2003-06-11 23:38

Message:
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Hm, maybe I am misreading the code, but AFAICS, we are already 
"interpolating the first scanline with a black dummy line in top of 
it". That's what all the filters I looked at seem to do, at least.

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