Scanlines mode options or glsl shader support?

[RetroD]

Would it be possible at all to add some options for scanlines such as opacity (something like 25, 50, 75, 100%) and a filter to soften the image a bit? Even better, can glsl shader support be added so that we can use the same shader library from libretro? (all to be saved globally in the amiberry.conf of course :P )

Don't know about the feasibility for such requests, and I understand is not a priority by any means, but I thought I'd throw it out here to see what you guys think :)

Running 2.24 on retropie stretch on rpi3

[midwan]

Yes, I was planning to look into this at some point in the future... :)

[mrfomt]

This would be great if you could add to Amiberry!

[sphaero]

Any pointers where to start? I know uae4arm-rpi has some shader support. I'm not even sure yet if Amiberry is even using OpenGLES. 🤔

[midwan]

@sphaero Amiberry uses SDL2 but does not explicitly request a GL context to open the window.
To use GL shaders, we'll have to change that obviously.

I didn't have time to experiment with this yet, but if you want to help with it, pull requests are always welcome! :)