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CRT screen imitation in DOSBox

User is offline   Jimmy 

  • Let's go Brandon!

#31

Yeah that looks more like an arcade screen than a computer monitor.
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#32

I own a Sony CPD-100ES and it surprisingly still works despite continuous usage since we bought it for the home around '97. Having gamed extensively using a CRT monitor, I can definitely say that the curvature is not really noticeable. Another thing that is extremely overplayed in a lot of shaders is the "jumpy" effect, as if the image had a minuscule but constant up and down tilt, like the monitor is really struggling to keep the video signal up. In my experience, this only happens if you try to display a resolution with the wrong refresh rate (usually lower than the monitor is capable of). Also, the use of very prominent scanlines is another issue. I've heard some people say that they become more noticeable the older the monitor is, but at least in my case after over 20 years using the same monitor I hardly notice the scanlines, even after using it fresh off my main Samsung 32 inch curved monitor.

That said, I kinda like some of the shaders for the aesthetics they provide. They don't have to be faithful to CRTs to get their own vibe going, and I think that's the value you can get out of them: instead of trying to recreate a faithful experience that you probably will never perfect to a hundred percent, I say go all out and try something unrealistic but gritty, tech-noir; give some real personality to your games straight out of a cyberpunk novel.
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User is offline   MrFlibble 

#33

View PostHorseDongSub69, on 15 January 2020 - 01:41 PM, said:

Yeah that looks more like an arcade screen than a computer monitor.

Actually Lotte's shader includes the following text:

Quote

// This is more along the style of a really good CGA arcade monitor.
// With RGB inputs instead of NTSC.

You can easily minimize or remove curvature by editing the warpX and warpY parameters in the shader file (Lotte's), and the GEOM parameters for CRT-easymode.

Also there's a different project called DOSBox-CRT that uses OpenGL rendering:
https://mattiasgusta...h.io/dosbox-crt

This post has been edited by MrFlibble: 18 January 2020 - 04:05 AM

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User is offline   MrFlibble 

#34

It appears that in the meantime, shader support was brought back to DOSBox ECE, and with it, EasyMode and Lottes CRT shaders have been updated. A user made a small comparison gallery:
https://imgur.com/a/4FipjSj
https://imgur.com/a/pyDEm0w
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User is offline   MrFlibble 

#35

Recently I tested the various GLSL shaders available with the this pack with DOSBox ECE, and I think I like the one called crt-lottes-fast.subtle+gain.glsl. Here's a comparison against ECE's built-in sharp shader (both running with output = opengl):
https://imgsli.com/MzU5NTk
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