crt-pi shader users - reduce scaling artifacts with these configs in lr-mame2003, lr-fbalpha, lr-nestopia (and more to come)

[dankcushions]

@thelostsoul looks like that's a crt pc monitor? that's a slightly different proposition. they have a way higher resolution than a normal TV so i would guess the scanlines don't manifest in the same way at 240p.

according to the specs it runs at 1600 x 1200 so you could use this shader effectively at that resolution, and even build some configs that match that resolution, using this script (although they probably won't help much at 4:3)

[tekn0]

I just wanted to say thank you for making these!

[tekn0]

@dankcushions This is great! I cloned your script, but is there a way to have it also create a perfect height integer for all non vertical games (Mortal Kombat etc)? So basically do the opposite of what it does now, and just set the perfect integer on horizontal games to keep the scan-lines even for horizontal games?

I have tried various tolerance settings, but I can only seem to get 1080 in my tests.

[Pyjamarama]

@dankcushions will this shader pack work with your MAME/FBA scanlines config pack instead of the simple CRT_PI?

Thank you

[dankcushions]

@tekn0 said in crt-pi shader users - reduce scaling artifacts with these configs in lr-mame2003, lr-fbalpha, lr-nestopia (and more to come):

@dankcushions This is great! I cloned your script, but is there a way to have it also create a perfect height integer for all non vertical games (Mortal Kombat etc)? So basically do the opposite of what it does now, and just set the perfect integer on horizontal games to keep the scan-lines even for horizontal games?

I have tried various tolerance settings, but I can only seem to get 1080 in my tests.

trying to cast my mind back - no i'm not sure you can. but it sounds to me like you just want to set integer scaling on, and don't need the script? what kind of display are you using?

[dankcushions]

@pyjamarama said in crt-pi shader users - reduce scaling artifacts with these configs in lr-mame2003, lr-fbalpha, lr-nestopia (and more to come):

@dankcushions will this shader pack work with your MAME/FBA scanlines config pack instead of the simple CRT_PI?

Thank you

hi! what shader pack? i'm not sure i understand :)

[Pyjamarama]

Here you are :)
https://retropie.org.uk/forum/topic/4046/crt-pi-shader-users-reduce-scaling-artifacts-with-these-configs-in-lr-mame2003-lr-fbalpha-lr-nestopia-and-more-to-come

[dankcushions]

@pyjamarama ok so:

with your MAME/FBA scanlines config pack

what's my MAME/FBA scanlines config pack?

[Pyjamarama]

This post is deleted!

[tekn0]

@dankcushions I am on a 1080p display. I have all of my emulators integer scaled for that resolution. All of my systems except for neogeo have very minimal/zero offscreen crop. I absolutely LOVE what you have done here for vertical games and it works so well.

I was wondering if there was a way/flag (and this might be a feature request) to have your script do a "horizontal" mode based on the tolerance setting, to set the height to an integer as well just for horizontal games.

So for example at 1080p the integer height of Mortal Kombat overflows the screen to much at 1270 (5x). But at 1016 (4x) there is a very small amount of black bars at the top/bottom which I don't mind. As your script seems to set every cfg's height setting to a static 1080 based on my 1920x1080, it would be cool to have it set the height to either a 5x or 4x integer depending on the tolerance setting.

[robertvb83]

@dankcushions is there a corresponding folder to place these config files for mame2003-plus?

[dankcushions]

@robertvb83 it should be /mame2003-plus/

[robertvb83]

@dankcushions i tried that but it is not loading the config on gamestart

[dankcushions]

@robertvb83 said in crt-pi shader users - reduce scaling artifacts with these configs in lr-mame2003, lr-fbalpha, lr-nestopia (and more to come):

@dankcushions i tried that but it is not loading the config on gamestart

sorry, this: MAME 2003-plus

[robertvb83]

thank you, thats working

[thelostsoul]

@dankcushions Is it possible to convert this somehow for 640*480 CRT VGA monitor (480p)?
I use a pc monitor with that resolution, but the monitors scanlines does not make a big difference at that resolution. It does not support 240p, the point where I wouldn't need any shader. Thats why I use some sort of shaders here and I really like yours. But it looks often very bad for this resolution.

Edit: Sorry, I saw the link with the script for creating the package myself. I will download and try it myself first.

Edit2: OH, but I think this will not help me with the other consoles right? I would need a shader specifically for 480p.

[thelostsoul]

@dankcushions Ok, done generating this. It does not work with 480p. I get following content for all games:

# Auto-generated crt-pi-vertical.glslp .cfg
# Game Title : dkong , Width : 224, Height : 298, Aspect : 3:4, Scale Factor : 1.61073825503
# Screen Width : 640, Screen Height : 480
# Place in /opt/retropie/configs/all/retroarch/config/MAME 2003/
# Insufficient resolution for good quality shader
video_shader_enable = "false"

[dankcushions]

@thelostsoul didn't we already have this conversation? :) https://retropie.org.uk/forum/topic/4046/crt-pi-shader-users-reduce-scaling-artifacts-with-these-configs-in-lr-mame2003-lr-fbalpha-lr-nestopia-and-more-to-come/277

[thelostsoul]

@dankcushions Yes, I remember. Till then, I am not happy with the Arcade games. If I get an old 240p CRT, then I can leave this shader stuff behind me. Currently I use the shader named "scanlines" for all Arcade games and it works, but doesn't look good as it would with a correct crt-pi shader.

@caver01 said:
"
That's really interesting. I need to do a CRT build at some point.
"
Which is exactly what I am searching for, isn't it? Am I the only one asking for shader at 480p?

[caver01]

@thelostsoul said in crt-pi shader users - reduce scaling artifacts with these configs in lr-mame2003, lr-fbalpha, lr-nestopia (and more to come):

Am I the only one asking for shader at 480p

I think so, because with that low res, you won't have many pixels to simulate the scanlines or shadow mask effects. And for folks with a real CRT, well, no shader needed because you have the CRT we are trying to simulate.

Of course, if the CRT is a high-resolution (very fine dot-pitch) multi-sync PC monitor, your real scanlines could lack the vintage look and feel at 480 that a TV would have shown. You might as well run it at a HIGH resolution and enable shaders like the rest of us.