thank you! I’ll try messing around with this
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I’ve played around and doing some extreme values creates massive artefacts. Maybe this is very resolution dependent. As an alternative, you can disable the scanlines from this Shader and try to Append a different scanlines Shader. Probably not very accurate, but it might be acceptable. No disrespect to the main Shader packages from sonkun and guest! Just presenting an alternative.
So load the Shader from Sonkun and go into “Shader Parameters”. Search for “No-scanline mode” and set it to 1.00
Then go to Shaders menu again and Use Append to add another Shader to the bottom
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Go into scanlines subfolder where the Shaders are and select “res-independent-scanlines.slangp”
You can play around with its setting, but you will see a dramatic change by just loading it this way. But the scanlines are not accurate I think. So it might need tinkering specifically for your configuration. Here without further modifications before and after at close up: (based on curved 08-crt-guest-advanced-hd-slot-mask-neutral-rgb)
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I just tried that concoction out and that indeed looks more like the pvm look. It even gives the thick scanlines in bright areas.
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It’s not this hard, more like scanline type 1.0 are to be used, “Scanline Shape Dark/Bright Pixels” both set above 1.5, and like @sonkun mentioned, Scaneline shape params increased. You can also lower scanline gamma a bit.
Post brightness is to be decreased to like 1.0, or scanline shapes can be affected / clipped.
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This is weird… Following your instructions, when I set No-scanline mode to 1 the brightness goes way up. In darker areas you can see a weird effect as well… Sad because the scanlines do look more pronounced after appending the new ones, wonder what’s going on. First thought was that the trinitron presets worked differently and caused this (the ones I use), but I’ve tried the other types and it happens in all of them. I’m a new user and can only post one image so I’ve made this collage of before/after turning off the scanlines of the preset. If I then append the scanlines they look more pronounced but it still looks too bright like this:
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Hi guest. I have played with those settings and increased (or also decreased) those parameters above the suggested thresholds. And indeed, type 1.0 solves the problem with the artifacts I got before. For testing, I chose extreme values again and this is what I have and got. This time I used aperture-grille and flats-screen variant as base: sonkun/original-presets/aperture-grille/flat-screen/1440p/08-crt-guest-advanced-hd-aperture-grille-neutral-rgb.slangp
I could not widen the gap between each scanline, so the dark lines becomes “bigger”.
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It could also be all the crazy amounts of brightness, glow, bloom I use in my presets effecting the scanline gaps as well
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Right. There is so much going on and this desired effect from the user was never your goal. That’s why I went the replacement way of appending another scanline Shader. And that’s totally fine.
BTW to support your theory, looking at my latest screenshot where the dark areas are and less brightness, glow and bloom in effect, the black lines between scanlines are more pronounced. Not sure if I could explain this well, so here a small dump of the latest screenshot: 200% zoom
Looks pretty good to me, but the effect is visible in dark areas only (is that more realistic?). And this is zoomed in image, so the effect is a bit light.
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I have tested it and indeed magic glow (glow) is to be tuned down for a pvm look.
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True indeed. That’s why this sudden change in look also intrigues me, had me imagining adding a pvm rgb style preset to the pack for a second. Curious to see where this topic goes.
Ah ok. I assumed some of the other brightness settings also played a role in it as well.
I mean it still kind of looks more like a consumer tv to me there instead of the thick scanline pvm look that telepahos is trying to achieve, the scanline gaps are definitely thicker though.
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This looks pretty cool, thank you! It’s the first time I try the Append feature to mix 2 shaders together, and I like it a lot.
I’ve made comparisons on PSX Syphon Filter. 1x Internal res. 4K Aperture Grill Preset.
NTSC2 RetroArch Example - Imgsli
RGB RetroArch Example - Imgsli
Much appreciated for the thorough explanations!
Edit:
Tried it on Castlevania SOTN, liking this a ton! I’ll use a different site this time, so you can just click and see Raw > NTSC 2 > RGB easier.
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The results are interesting indeed. I’m curious if this look can be achieved without the additional scanline Shader. You might be interested in playing with its Phase setting too, as this will change the starting point of the scanlines. I’m not sure when this is needed, but maybe depending on the system (game) and your host (output) resolution. Here is this with default value of Phase 50 compared to 0. Otherwise using the same Shaders as described:
I’m not sure which one is more accurate or better. It not only changes the starting point of the scanlines itself, the color is affected by it too.
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That’s definitely looking like the pvm style. It looks you just tweaked the guest shader by itself for that look as well.
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GUYS MY CRT monitor ACTUALLY WORKS mine it’s a compaq 5700 with some driver adjustments and retroarch modifications i managed to get 240p out of this monitor
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anyone know why this could happen?
this is it, what did you do to achieve this?
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Try to load up the non curved presets (the flat-screen) and those with RGB named files from Sonkun, in example sonkun/original-presets/aperture-grille/flat-screen/1440p/08-crt-guest-advanced-hd-aperture-grille-neutral-rgb.slangp (but choose the appropriate resolution for your monitor, I chose 1440p because thats what I output). And set the Scanline Type to 1.00, seen in my reply at Sonkun’s crt-guest-advanced-hd presets thread . But let’s wait what others will report and their settings. As I could not replicate what others managed.
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It will look more like consumer a TV because the mask template (that is correctly scaled for the different resoutions) that was picked for the presets is similar to one 
There are of course video monitors that have similar TVL counts and you can manipulate scanlines quite a bit, but you may try to just flip through the different masks if you are after a high quality PVM monitor look.
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Tried flatscreen presets, no difference on this issue. RGB was what I was using already.
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