What shaders do you guys use for Arcade emulation?

Capeman

Nearest Neighbor, the good ol default no-shader solution. Oh the delicious chunky pixels!

Addison

Was going to make a topic on this myself but the forum suggested that I come here instead.

But yeah, I wanted to say that I use Crt-pi myself.

I find it to be quite wonderful.

Was hoping for other opinions though, but it seems like most people here just enjoy the default video settings.

Darksavior

@addison I switched to the glcore driver in retroarch so I could use the slang version of the crt-pi shader. It's not as blurry as the gl version. You'll need to add the slang shaders to retropie yourself.

I actually prefer the crt-royale shader but it doesn't work on the pi. It would probably be too slow if it did.

davej

@darksavior said in What shaders do you guys use for Arcade emulation?:

@addison I switched to the glcore driver in retroarch so I could use the slang version of the crt-pi shader. It's not as blurry as the gl version. You'll need to add the slang shaders to retropie yourself.

The difference you're seeing between the GL and slang versions of crt-pi is because there's a bug in the crt-pi.slangp file. All the crt-pi shaders require the use of linear filtering to work correctly and the crt-pi.slangp file has the wrong setting. I've raised an issue to get it corrected.

If you find crt-pi too blurry, the 'official' solution is to edit the glsl/slang files to enable the SHARPER functionality.

Look for the

//#define SHARPER

line and change it to

#define SHARPER

davej

Addison

@davej
Where is that file located so I can use your edit suggestion?

Please and thank you.

davej

@addison said in What shaders do you guys use for Arcade emulation?:

@davej
Where is that file located so I can use your edit suggestion?

Please and thank you.

I'm not the best person to answer that because I don't have a normal retropie installation. I think it's in

/opt/retropie/configs/all/retroarch/shaders/shaders/crt-pi.glsl

To guard against updates overwriting it, it might be better if you copy the file (calling it something like crt-pi-sharper.glsl) and make the change there. You'll need a corresponding crt-pi-sharper.glslp file - they are stored in the directory above the .glsl files.

Hopefully someone will provide the correct information if I've got it wrong.

Addison

@davej
I copied and renamed crt-pi.glslp to crt-pi-sharper.glslp

/opt/retropie/configs/all/retroarch/shaders/crt-pi-sharper.glslp

shaders = "1"
shader0 = "shaders/crt-pi.glsl"
filter_linear0 = "true"
wrap_mode0 = "clamp_to_border"
mipmap_input0 = "false"
alias0 = ""
float_framebuffer0 = "false"
srgb_framebuffer0 = "false"

What is needed to edit this?

//#define SHARPER

That is not located here like you mentioned.

Cheers. :)

mitu

@addison said in What shaders do you guys use for Arcade emulation?:

That is not located here like you mentioned.

Are you sure ? You've actually edited the shader preset (.glslp) and not the shader itself (.glsl).

Addison

@mitu
I'm not sure what you mean.

I copied the file location folder and file names while in WinSCP.

I didn't type anything of those out by hand.

So I don't think I made a mistake.

Edit:

Ooh.

I read your message wrong, along with Dave's. :/

Going to go back and look again.

Thanks Mitu!

Addison

I missed that the folder was shaders/shaders and not just /shaders.

Sometimes I can be too stupid to live. :D

Anyway, I applied the sharper settings and it's absolutely stunning.

It makes the display I was using before seemed smudged as compared to now.

I'm keeping this Shader forever since it looks so good.

Thank you all. :)