#869 closed defect (wontfix)
ALL: Discrepancy between filters
| Reported by: | SF/logicdeluxe | Owned by: | fingolfin |
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| Priority: | low | Component: | Graphics: Scalers |
| Version: | Keywords: | ||
| Cc: | Game: |
Description
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.
Ticket imported from: #751850. Ticket imported from: bugs/869.
Attachments (1)
Change History (9)
comment:1 by , 21 years ago
| Priority: | normal → low |
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comment:2 by , 21 years ago
comment:3 by , 21 years ago
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.
comment:4 by , 21 years ago
Ah I see now. This is not a FR, this is simply a bug: a discrepancy between the ways the various filters work. The advmame & normal filters are apparently offset by +1/+1 compared to the 2xsai family. Will look into this once I have some time.
comment:5 by , 21 years ago
| Summary: | the uppermost scanline: better interpolation → ALL: Discrepancy between filters |
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comment:6 by , 21 years ago
After investigating it, I think there is nothing we can or should do about this. If I do what you suggest, then in other games (i.e. any newer games which do not have a text line at the top; i.e. the majority of all games) have a black line at the top. The problem simply is that the 2xsai family of filters is heavily based on blurring. I.e. the area the text fills is slightly increased - and that doesn't work to well at the borders, as you have noticed here. This is a inherent flaw of the 2xsai filter family, and there is nothign we can really do about it.
comment:7 by , 21 years ago
| Owner: | set to |
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| Resolution: | → wontfix |
| Status: | new → closed |
comment:8 by , 6 years ago
| Component: | → Graphics: Scalers |
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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.