New CRT shader from Guest + CRT Guest Advanced updates

[ProfessorBraun]

Hey thank you for the updates, I am satisfied with the result obtained by a new combination of parameters that I am testing. Nice improvements sir !

[RetroGames4K]

Thanks for inplementing negative mask bloom. Looks really good

[Fab]

I’ve tried messing with it a little but I don’t quite understand its usage, what would be the ideal scenario? Ora what could you achieve with it that wasn’t doable before?

[c9f5fdda06]

Only one way to find out

Find a memorable area and start to do some comparisons…when you get a chance. I hope to be able to contribute to this later.

[guest.r]

I want it to have some properties, but there is some work and testing involved. Hopefully it will turn out quite nicely.

[sonkun]

Had to step away from the scene for a bit but man even being away for a short while I see things have advanced even more with your latest updates. I’ve already downloaded it and checked it out and as always you come with the goods, thank you once again @guest.r

[guest.r]

New Release Version (2023-08-09-r1):

Notable changes:

• New (negative mask bloom) effect overhaul. Best use it with finer bloom sampling.

Download link:

https://mega.nz/file/8t5kEajR#trutdcLFKp0Pmrlh2ZiG2hLGoo3PwwjJ6NSh3glFNSA

[sonkun]

Curious to see how this combination compares to plain negative bloom which is what I been using.

[guest.r]

It’s good at preserving color saturation of bright colors and scanline saturation. It should also have some (more) influence over adjecent pixels without much annoyance. Default bloom pass parameters aren’t this optimal, it should look nicer with some bloom color shaping.

[sonkun]

Nice. Looking forward to trying this out soon as I get home.

[Hyllian]

At last I’ve got the look I was searching by tweaking @guest.r’s shaders.

This is my Trinitron look:

I was a bit confused about how to extract luminance without loosing colors quality. After some days playing with it, I got something like Royale’s with some differences due to distinct implementations.

My tweaks (tested with the last two releases only):

#reference "shaders_slang/crt-guest-advanced-2023-08-09-release1/crt-guest-advanced.slangp"
TNTC = "4.000000"
wp_saturation = "1.200000"
glow = "0.000000"
bloom = "0.000000"
mask_bloom = "0.500000"
gsl = "0.000000"
scanline1 = "2.000000"
scanline2 = "10.000000"
beam_min = "2.000000"
beam_max = "1.000000"
beam_size = "1.000000"
scans = "0.500000"
scan_falloff = "1.000000"
spike = "0.000000"
h_sharp = "6.500000"
s_sharp = "0.000000"
shadowMask = "6.000000"
maskstr = "1.000000"
mcut = "1.100000"
maskboost = "3.000000"

[sonkun]

That’s sexy. It looks like a fusion between guest and royale.

[guest.r]

Yeah, with my default settings the trinitron look even with a proper mask is a bit meh, but you did a very nice tweaking, like the looks of it.

[Hyllian]

I made small changes that improves a bit the colors:

#reference "shaders_slang/crt-guest-advanced-2023-08-09-release1/crt-guest-advanced.slangp"
TNTC = "4.000000"
wp_saturation = "1.200000"
gamma_out = "2.200000"
glow = "0.000000"
bloom = "0.000000"
mask_bloom = "0.500000"
gsl = "0.000000"
scanline1 = "2.000000"
scanline2 = "10.000000"
beam_min = "2.000000"
beam_max = "0.950000"
beam_size = "1.000000"
scans = "0.500000"
scan_falloff = "1.000000"
spike = "0.000000"
h_sharp = "6.500000"
s_sharp = "0.000000"
shadowMask = "6.000000"
maskstr = "1.000000"
mcut = "1.100000"
maskboost = "2.500000"
mask_gamma = "2.200000"

[ProfessorBraun]

@guest.r Is it possible to achieve a stronger bloom/halation substract ? I think it can improve the overall picture with high radius/sigma values. While keeping mask visible and less blurry around bright pixels.

Here’s the results with a preset that I want to tweak for bright pixels (if possible with substract).

[guest.r]

With new release there will be options to adjust bloom and halation mask strengths at least (to very easily keep masks visible). Maybe finer bloom sampling could help, but i can only guess the overall situation. Otherwise magic glow can be a nice helper, maybe you could throw in a notch…

Edit: i could also return the negative bloom substract option for 'stronger results.

[guest.r]

New Release Version (2023-08-10-r1):

Notable changes:

• New (negative mask bloom) effect small but nice improvement.
• Bloom/halation substract alternate mode (re)added.
• Introducing mask strength controls for bloom and halation. Existing presets shouldn’t be affected.

Download link:

https://mega.nz/file/g84GCA4A#gXM0mHUt3VXRuzIpgokJhXEOkt0-PwsHZx8mTtz2GdM

[ProfessorBraun]

Wow,that was quick! Ok I will try that and thanks again for your time . Downloading now.

[HereticZero]

I hope this doesn’t force me to retune a certain preset I intend to share as a file but haven’t because can’t think of what to name it.

Wait a minute…

@guest.r

• Introducing mask strength controls for bloom and halation. Existing presets shouldn’t be affected.

*WTF BOOM *

Yeah, I know the the “wtf boom” meme implies something undesireable but it genuinely played in my head.

[Fab]

Played a little with mask strenght controls for bloom and halation, with moderately strong bloom, glow and halation values. Here’s what I’ve achieved: if the objective was to preserve the mask, success!

It’s a mask 11 NTSC preset, I use it for tests because it’s the most bright for 1440p and you have more room for toying with the brightness options.

Smartphone shot (those pesky vertical lines on Richter’s back gotta go, but with bloom and glow turned on it’s quite difficult):