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Re: DOSBox ECE (for Windows & Linux)

Posted on 2020-01-07, 12:26

Not to open that fight up again, but when you released the patches originally, they made dosbox unusable, and ECE, out-of-the-box behaves exactly as the poster described. It tears, it lags, it feels like a fight to make work.. I for one have never had such problems with the default settings on my …

Re: DOSBox ECE (for Windows & Linux)

Posted on 2020-01-06, 17:23

XxMiltenXx wrote on 2019-12-11, 17:02: 2. openglpp & glfullvsync Please, post your full settings for this test case and tell me if there is a message in the log window about the activation of VSync. Edit: as far as I understand, if the game itself is not v-synced, DOSBox can't help.

Re: DOSBox ECE (for Windows & Linux)

Posted on 2020-01-06, 16:56

The problem is that you're trying to use ECE which uses SDL 1.2. The Pixel-perfect scaling in SDL 1.2 builds exponentially makes dosbox slower, What exponential dependency are you talking about? There can be no slowdown whatsoever with openglpp (at least, without glfullvsync ) because it uses …

Re: DOSBox ECE (for Windows & Linux)

Posted on 2020-01-06, 16:40

Hey, I have a tearing issue with DOSBox ECE. As I want to record games, it's kind of a big issue. Does this fork help? 2. openglpp & glfullvsync glfullvsync works in true fullscreen mode only, but does not work in a borderless window. Did you have fullborderless off when testing with glfullvsync ?

Re: VIDEO Patch for pixel-perfect scaling (SDL1)

Posted on 2019-12-13, 13:48

Sorry I couldn't figure out the patch. :( I assume that you patch relies on the monitor to stretch the vertical in a 320x200 signal back out to the CGA height? My patch its intended mostly for modern LCDs with a fixed native resolution and square pixles. It cannot rely on the monitor for anything …

Re: VIDEO Patch for pixel-perfect scaling (SDL1)

Posted on 2019-12-13, 09:39

So... the theory with this goes (at least as I understand it) that you upscale to 1600x1200 and then output to 320x240. No, I don't do that. The only possible integer scaling of 320x200 into 320x240 is with unity scales, that is no scaling at all. My patch will display that image at one-to-one …

Re: VIDEO Patch for pixel-perfect scaling (SDL1)

Posted on 2019-12-12, 20:07

Wondering if anyone here has any experience to apply this patch on a raspberry pi. I found the .diff file, but I don't know the procedure or potential results. I have no experice with RPi and use the build procedure described here with no optional features. Applying the patch is as simple as …

Re: VIDEO Patch for pixel-perfect scaling (SDL1)

Posted on 2019-10-18, 20:43

Strange situation about Spellcasting 101 and its EGA resolution (640x350), i somehow prefer openglnb mode aspect ratio despite garbled pixels The situation is not favourable for the patch: the game's resolution is relatively large(640x350), the pixel aspect ratio (1.37) highly incommensurable, and …

Re: VIDEO Patch for pixel-perfect scaling (SDL1)

Posted on 2019-09-09, 19:45

ZakMcKracken , No, I don't think that such a specific scaler is within the scope of the generic library that is SDL . It should be implemented in DOSBox , preferably as a pixel shader. Upgrading to the latest SDL seems to me a task of medium difficulty. By the way, the new SDL supports hardware- …

Re: VIDEO Patch for pixel-perfect scaling (SDL1)

Posted on 2019-09-05, 11:37

Interesting, still looks good to me (screenshots were taken in opengl graphics mode) Here is screenshot in Normal (no scaling) graphics mode. Снимок экрана (173).png It has some extremely rude glitches in the vertical direction. Just compare it with the original . Look, for example, at the "Options …

Re: VIDEO Patch for pixel-perfect scaling (SDL1)

Posted on 2019-09-05, 10:55

That is your opinion. The misleading use of the term pixel-perfect for something that is not so, is not a matter of opinion. The term pixel-perfect refers to sharp, regular pixels of identical size undistorted by any interpolation. I find wrong aspect ratio to be terribly jarring, for example. …

Re: VIDEO Patch for pixel-perfect scaling (SDL1)

Posted on 2019-09-05, 10:21

Wouldn't pixel-perfect scaling of 320x200 using square pixel flat panels result in wrong aspect ratios? It is possible but not necessary. My patch, for example, will try to keep the right aspect ratio or at least to minimise the error. It can use 4:5 scaling (with a 4% error is aspect ratio) or 5:6 …

Re: VIDEO Patch for pixel-perfect scaling (SDL1)

Posted on 2019-09-05, 09:24

@ant_222, here you go, btw, screenshots from latest ScummVM build (aspect correction on, 1080p) Bad news: both the screenshots use nearest-neighbor interpolation and have irregular pixel magnification, which means that the ScummVM developers not only have failed to implement pixel-perfect scaling, …

Re: VIDEO Patch for pixel-perfect scaling (SDL1)

Posted on 2019-09-04, 20:43

I do not see such an argument. An efficient implementation is actually possible even with the obsolete SDL 1.2 that the official DOSBox uses, if one takes advantage of the built-in nearest-neighbor scaling in OpenGL mode and confines the output area to one whose size is a multiple of the original …

Re: VIDEO Patch for pixel-perfect scaling (SDL1)

Posted on 2019-09-04, 11:15

ScummVM has added pixel-perfect mode (in daily builds) a year ago, i guess. Works as intended Please, post several ScummVM screenshots of different sizes taken in pixel-perfect mode. I will tell you the algorithm. My understanding from Ant's explanation is that openglnb applies the same 'duplicate …

Re: VIDEO Patch for pixel-perfect scaling (SDL1)

Posted on 2019-09-03, 22:18

Please don't stop. I will try... Your patch is one of the main reasons I continue to use DOSBox over ScummVM (btw, does ScummVM have anything similar to the pixel perfect patch at this point, or is the PAR still messed up when playing games with ScummVM?) I think not, and it is very strange that …

Re: DOSBox ECE (for Windows & Linux)

Posted on 2019-08-26, 12:53

I think that a minimal English page with a list of features/patches and a download URL would be very good. If you have a constant link to the latest version of the patch, I can host such a page myself and also link to it from the title post of the Pixel-Perfect thread.

Re: VIDEO Patch for pixel-perfect scaling (SDL1)

Posted on 2019-08-24, 15:31

Are there any builds for OSX that has this patch included? It’s awesome on Windows. I am very glad you like it, but don't know of any OS X build with my patch. Currently I see three ways to pixel-perfect display in DOSBox : A pixel shader for pixel-perfect scaling, BladeSk's patch , and My patch. I …

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