Apologies for the delay in replying I’m in the midst of developing a Reshade add-on and all my attention is going into that at the moment (along with my 3 month old son 
)
As @Cyber said just raise it to the highest luminance possible - it’s pretty much luminance always wins the day. With BFI are you noticing it helps when you look at the main sprite or background?
Hi @Jamirus that’s a work in progress - I think I had photos from a Tekbright 700P but I never got around to fully matching it. Basically ignore it - it’s one for the future.
Depending on your settings i.e preset there may not be a difference as I may not have implemented the BGR layout for the particular mask. Most are done but you’d have to look through the masks in the shader code to be sure.
Hi @Cyber hope you’re well so my first idea would be to use SDR mode and see if that resolves the mask issues. Then you can rule out whether it’s the TV crunching chroma in HDR mode or something else in your display pipeline.
Greetings @MajorPainTheCactus, I think this response might have been intended for @faxesystem.
I’ve all but eliminated all of my issues with masks not displaying correctly on my OLED TV using the appropriate mask and subpixel layout settings in CRT-Guest-Advanced. I’m almost sure they will also apply to your shader.
I shared the link with my findings so you can follow. Hopefully with this knowledge you can finally update your guidance and start officially supporting OLED TVs just as LCD TVs.
Basically things look really messed up using RGB but much more like they’re supposed to using BGR Layout. This is with RRGGBBX Mask.
Do you have this mask layout available in Sony Megatron Color Video Monitor?
Eventually, I’ll load up the shader and try to share some even nicer Sony Megatron Color Video Monitor, The Legend of Zelda pics!
RRGGBBX is available as the 300TVL mask in this shader.
By the way, @MajorPainTheCactus, have you considered adding a RRYGCBB mask? It’s pretty good for increasing brightness, at least on an SDR display.
No I haven’t but Ill have a play around with it and see how it looks. TBH though this shader is really designed for HDR or very bright SDR displays and I usually point people to Guest’s brilliant shader if they have dim displays. Thanks for this though I will take a look at this mask - it’s always interesting to see new ideas!
Ah just got my wires crossed, ok good to know!
It’s pretty much a lower TVL version of the RYCBX 8K mask already included, and there’s room for it, too, as currently the RRGGBBX mask is repeated twice under the 8K masks, so it can replace one of those. Just a suggestion.
That sounds like a very solid argument! I’ll whack it in then - there’s definitely no point in having two the same.
Haha no problem.
So you mean set the max luminance to my tvs max nits or can I go higher with the shader without ruining the image?
BFI is good for scrolling games, but unnecessary for static backgrounds imo
Set the max luminance to what your TV is capable of. One source of this information is RTINGS reviews of the set.
@Wilch Yup as Cyber says here. Once you do that you may need to play around with paper white nits. Paper white nits is what you expect a sheet of white paper to be (not that bright!). Usually this should be set to around 150nits BUT when dealing with these CRT shaders that have hardly any sub pixels turned on compared to normal then you can just whack paper white nits up to the same as max nits and that’ll give you the brightest experience. Depending on your TV though that maybe too bright. Have a play around.
I thought it looked pretty nice after making some adjustments for the low-res SDR displays I used. I also had a brief look at the shader presets on a 4K TV, but any feedback will come later when I’m able to do some more thorough testing. That being said, if the Toshiba preset is essentially another VGA monitor variant, I was wondering if your project actually benefits from photos at different resolutions? There’s already quite a difference between 50 and 60 Hz modes on regular SD (15 Khz) displays.
Hello Friends,
I stumbled upon this thread as I was looking into retroarch and HDR.
I read this thread but I still have a question (which i believe was asked earlier but without answer)
I apologise in advance if I missed the information I am looking for.
I have a LG CX Oled TV and retroarch is running on a windows 10 pc with a RTX 3070 card.
Cable is hdmi 2.1 and I run my desktop at 4k 120hz color bitdepth being left to auto (if that is important)
The TV input is set to PC and picture to Game mode.
Automatic Tone Mapping is disabled.
I am confused about the HDR settings to use with this shader and the presets.
Basicaly what I do is that I turned HDR on into RA with max luninance at 600 Nits and PaperWhite at 200.
When I enter RA the screen switches to HDR indicating that it is working.
The strange thing is that when i apply any preset for the shader (for instance one of the PVMs) the image will appear washed out and if i move the max lum and Paper white settings in the shader menu it will not change much to the washed out aspect of the picture)
So I am wondering if I am maybe doing something wrong.
Could anyone please advise ?
I am also trying to understand if the shader’s HDR settings will override RA’s setting.
I would also like to know if HDR should be turned on in Windows directly.
And lastly if here is anything that should be noted for the use of the shader on an LG Oled screen.
Thank you 
It’s been mentioned several times, but the Megatron shader will only work as intended if using a display with a regular RGB subpixel layout, which OLED sadly lacks. The Megatron requires a very particular setup to work properly.
You can still use it, but you won’t get results that look like the amazing photos posted by @MajorPainTheCactus.
@guest.r’s excellent shader is a great option for OLED users and those with weird subpixels.
As mentioned here the same RRGGBBX mask that seems to work well with OLED TVs when Layout is reversed is available in Sony Megatron Color Video Monitor.
Once the option to flip the layout works properly for that mask in Sony Megatron Color Video Monitor I don’t see why OLED TV users shouldn’t have a wonderful experience down to the phosphor level as well.
I haven’t tested it yet but hopefully I should soon.
Use RRGGBBX mask with reversed Layout for OLED in either Sony Megatron Color Video Monitor or CRT-Guest-Advanced if you want your “phosphor” triads to look even and properly aligned.
Other modes will look good as well but the “phosphor” triads wouldn’t look as they should.
thank you both for taking the time to answer.
i am still confused as the megatron appears to display good colors etc sometimes when i switch hdr on/off in RA.
Cyber,
i looked for the RRGGBBX mask in crt guest advanced but could not find anything (may not be looking at the correct place)
I have the choice for crt mask between 0 cgwg up to 7 trinitron.
english not being my primary language i may have missed part of the discussion especialy in the guest thread.
as such i truly apologise for asking so many potentialy obvious questions.
It’s Mask 12. You have to set the Size to 1 as well and change the Layout from 0 to 1 .
If you don’t have a Mask 12, then you probably need to head over to the thread and get the latest update.
Both CRT-guest-advance and Sony Megatron Color Video Monitor still look pretty good despite the strange OLED subpixel layout even without using RRGGBBX Mask with reversed Layout. The OLED subpixels seem to line up more or less as they should or at least much better using RRGGBBX Mask and reversed layout though.
indeed the shader was not the latest in RA.
I downloaded it from the thread and i can now see what you mean.
small question does guest work with hdr ?
as for megatron i will wait for the shader to develop further but it is already great