composite11.csh: composite11.csh: 0:360(30): error: variables of type sampler2D cannot be operands of the ?: operator
0:362(32): error: variables of type sampler2D cannot be operands of the ?: operator

I have the same issue, I'm on arch, wayland and have the same GPU.

Edit: On Sodium 0.6.6 and Iris 1.8.5 running version 1.21.4, and using the latest dev version of the shader, I still have the issue.

Same issue on Windows 11 with an AMD RX6400

composite11.csh: composite11.csh: ERROR: 0:349: ':' :  wrong operand types: no operation ':' exists that takes a left-hand operand of type ' uniform sampler2D' and a right operand of type ' uniform sampler2D' (or there is no acceptable conversion)
ERROR: 0:349: '' : compilation terminated 
ERROR: 2 compilation errors.  No code generated.

I think this issue is somewhat similar to #112 though, makes me believe it's another AMD-specific thing.

Just confirmed this fix works on Minecraft Fabric 1.20.1 and Prism Launcher.
With the Flatpak release of Prism however, it'll throw an error stating Wayland: The platform does not support setting the window icon and launch the game as an invisible window. Installing the pacman version of Prism launcher resolved this (and there is probably a way to resolve it with Flatseal too)

I have a fix, basically its just using the latest dev version. Just go to the base of this repo (or just click here) and click the green "Code" button, then click "Download ZIP", this downloads the latest development version of this shader, which you'll need to use. Use the shader you just downloaded titled "Shrimple-main.zip", and you're done!

Edit: I deleted a lot of stuff in this message because I realized that most of the steps were unnecessary.

Just confirmed this fix works on Minecraft Fabric 1.20.1 and Prism Launcher. With the Flatpak release of Prism however, it'll throw an error stating Wayland: The platform does not support setting the window icon and launch the game as an invisible window. Installing the pacman version of Prism launcher resolved this (and there is probably a way to resolve it with Flatseal too)

@Inderix 90% of what was in the "fix" was actually not part of the solution and unnecessary, which I just realized. Although you now have minecraft running on wayland natively which is a bonus.

I updated the guide to include to the pacman version. Glad it helped someone

@superSecretSigmaAccount I updated the guide so that it works on all distros, so you can try using it.

The main issue here is just that there isn't an official release including #114 which fixed the AMD bug.