Re: Full-screen mode

Posted on 2016-08-08, 11:26

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by Ant_222

in DOSBox Patches

in DOSBox Patches

KainXVIII wrote: Latest SVN dosbox is very buggy for me (crashes very often), Ant_222's built has same problems. Unless you think I have introduced those problems, let us not discuss them here. I can patch the official DOSBox 0.74 if I get its sources. Does it correspond to any specific SVN …

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Re: Full-screen mode

Posted on 2016-08-07, 12:59

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by Ant_222

in DOSBox Patches

in DOSBox Patches

Notice that on your monitor [Flashback] is displayed with 5x4 pixels, for the its calculated aspect ratio is 0.857 vs. the 1.000 that DOSBox assumes. EDIT : The question is: is it better or "truer" than the 1:1 ratio? I prefer 1:1 and it looks exactly like this on CRT monitor back in the days, …

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Re: Full-screen mode

Posted on 2016-08-06, 20:08

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by Ant_222

in DOSBox Patches

in DOSBox Patches

Once upon a Forest looks great.

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Re: Full-screen mode

Posted on 2016-08-06, 18:56

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by Ant_222

in DOSBox Patches

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KainXVIII wrote: Flashback does not look right? Now it does. I had bug in my code. Notice that on your monitor it is displayed with 5x4 pixels, for the its calculated aspect ratio is 0.857 vs. the 1.000 that DOSBox assumes. EDIT: The question is: is it better or "truer" than the 1:1 ratio?

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Re: Full-screen mode

Posted on 2016-08-06, 18:05

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by Ant_222

in DOSBox Patches

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Thanks, looks cool, i guess! Is it normal, that most of the games has black borders around screen, its like a compromise for pixel perfect image? Yes. PS - what dosbox version did you use? Revision 3989. PPS - https://www.vogons.org/viewtopic.php?f=32&t=49327 your dosbox can be pixel perfect AND …

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Re: Full-screen mode

Posted on 2016-08-06, 17:18

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by Ant_222

in DOSBox Patches

in DOSBox Patches

Whoever has Windows is welcome to try the new pixel-perfect scaling implemented in the attached build. Please, consult the readme file for configuration. Update: respect the aspect ratio reported by DOSBox.

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Re: Full-screen mode

Posted on 2016-08-06, 13:37

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by Ant_222

in DOSBox Patches

in DOSBox Patches

It is not always safe to calculate the pixel aspect ratio as: Copy code to clipboard 1 0.75 * width / height For 640 x 480 it is unity, and for 256x224 it is 0.857.

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Re: Full-screen mode

Posted on 2016-08-05, 20:56

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by Ant_222

in DOSBox Patches

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Flashback could be interesting, 256x224 double-height double-width. How should it be displayed? What is the aspect ratio of its native pixels? Since it is double-height and double-width, and render.src.ratio is unity, my algorithm magnifies it proportionally to 4x4 = 1024*896, which looks too …

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Re: Full-screen mode

Posted on 2016-08-03, 16:40

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by Ant_222

in DOSBox Patches

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Scali , OK, I will test it with several different games (but only with one display!). Thanks for the samples, ripsaw8080 . I think (not at my home PC right now) that dobule-height and double-width flags are handled in render.cpp and the final input surface used in sldmain.cpp already takes them …

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Re: Full-screen mode

Posted on 2016-08-03, 16:06

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by Ant_222

in DOSBox Patches

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Wouldn't know any games offhand... but well... your regular CGA/EGA/VGA lowres is 320x200, then various Mode X games are 320x240, Hercules is 720x350, EGA hires is 640x350... So that shows what you're going to be dealing with. Being dearly short on time, I should appreciate someone's naming several …

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Re: Full-screen mode

Posted on 2016-08-02, 08:47

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by Ant_222

in DOSBox Patches

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Your example has the source pixels scaled 4 pixels wide and 5 pixels high, scaled pixel aspect ratio 1.25, scaled resolution 1280x1000. The ideal would be to scale 5 pixels wide and 6 pixels high, scaled pixel aspect ratio 1.2, scaled resolution 1600x1200. Of course the ideal scaling won't fit on …

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Re: Full-screen mode

Posted on 2016-08-01, 21:29

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by Ant_222

in DOSBox Patches

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Here is "Lure of the Tempress" displays in the modified DOSBox in fullscreen with pixel-perfect aspect-ratio correction. EDIT: the image was corrupted by the hosting. Uploading.

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Re: Full-screen mode

Posted on 2016-08-01, 17:37

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by Ant_222

in DOSBox Patches

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Its dosbox.conf settings for pixel perfect scaling which i use output=direct3d pixelshader=bilinear.fx aspect=true scaler=normal5x You might try to set aspect=false and output=surface to get a pixel-perfect, but not aspect-corrected, image. Should work well for games running in graphical modes with …

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Re: Full-screen mode

Posted on 2016-08-01, 17:31

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by Ant_222

in DOSBox Patches

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You mean non-square pixels? I plan to approximate them by representing each pixel on the display as an m-by-n rectangle, where m and n are small natural numbers. I don't think that's going to work very well, if you use the same m and n for all pixels on screen. The amount of 'non-squareness' of …

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Re: Full-screen mode

Posted on 2016-07-31, 20:23

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by Ant_222

in DOSBox Patches

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You shall be the first to test my buggy alpha build, but I am sorry to say that it won't come till the next weekend.

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Re: Full-screen mode

Posted on 2016-07-31, 20:17

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by Ant_222

in DOSBox Patches

in DOSBox Patches

Fret not, I'm a-working on it.

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Re: Full-screen mode

Posted on 2016-07-31, 19:55

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by Ant_222

in DOSBox Patches

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KainXVIII, could you post screenshots of "Lure of the Temptress" and "Romance of the Three Kingdoms" running in full-screen on your DOSBox so that I might compare them with mine? Here LOT and SQ3 (ROTK is harder to get =) ) PS - maybe not so perfect as i think.. Woops — Neither of them is pixel- …

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Re: Full-screen mode

Posted on 2016-07-31, 19:40

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by Ant_222

in DOSBox Patches

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Thank you, KainXVIII. That image is not pixel-perfect. Could you please make another screenshot with aspect=false?

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Re: Full-screen mode

Posted on 2016-07-31, 19:29

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by Ant_222

in DOSBox Patches

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KainXVIII, could you post screenshots of "Lure of the Temptress" and "Romance of the Three Kingdoms" running in full-screen on your DOSBox so that I might compare them with mine?

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Re: Full-screen mode

Posted on 2016-07-31, 18:46

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by Ant_222

in DOSBox Patches

in DOSBox Patches

Well, it's pretty much a given that if you don't scale with integers, you can't have pixel-perfect stretching, that's by definition :) But I suppose you mean to say you want to have a 'nearest integer fit'. I simply find the largest integer scale that keeps the image within the display. For example …

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