[Scummvm-tracker] [ScummVM :: Bugs] #17254: SCI: KQ6: High resolution graphics mode scales text and low-res graphics unevenly (200→440 vertical stretch)

[ScummVM :: Bugs]

#17254: SCI: KQ6: High resolution graphics mode scales text and low-res graphics
unevenly (200→440 vertical stretch)
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Reporter:  dfabulich  |       Owner:  (none)
    Type:  defect     |      Status:  new
Priority:  normal     |   Component:  Engine: SCI
 Version:             |  Resolution:
Keywords:             |        Game:  King's Quest 6
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Comment (by dfabulich):

 My PR 7964 is restricted to KQ6; I think that's the only SCI1 game that
 needs this fix, but I'm a little hazy on all the variants of games that
 are available, so I'm not 100% sure about that.

 KQ6 CD has high-resolution character portraits designed to render at
 640x440 that are only available in Windows mode. Windows mode takes all
 the low-res art, targeted at 320x200, and applies ugly upscaling to render
 everything at 640x440. My PR 7964 enables KQ6 to run with the best of both
 worlds: high-resolution character portraits without ugly upscaling. But it
 comes at a cost: the game renders at 3200x2200, to ensure that we can
 multiply the dimensions of the high-res 640x440 art and the dimensions of
 the low-res 320x200 by integer factors.

 For the versions of the Windows SCI1 games I have on my machine, for Laura
 Bow 2 CD, EcoQuest 1 CD, EcoQuest 2, Space Quest 4 CD, they all have the
 option to run in Windows mode, and this makes them all do ugly upscaling,
 but there is almost no benefit in running in Windows mode; none of them
 have high-resolution character portraits to sync up with.

 (LB2 CD, EQ2 CD, and SQ4 CD all offer "Windows cursors," greyscale cursors
 that IMO don't look as good as traditional VGA cursors. EQ1 CD doesn't
 even offer Windows cursors; switching to Windows simply enables ugly
 upscaling, at no benefit at all.)

 For those games, I think users who don't want ugly upscaling should just
 switch to DOS mode. DOS mode is a much better way to disable ugly
 upscaling than rendering at 3200x2200.

 On the other hand, I did find a couple SCI32 games that would also benefit
 from this approach: Gabriel Knight CD, and Police Quest 4. I have a
 stacked PR that would add this setting to those games as well.
 https://github.com/dfabulich/scummvm/pull/1
-- 
Ticket URL: <https://bugs.scummvm.org/ticket/17254#comment:4>
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