Hello as the title says, when I select Curvature shaders in Emulation Station menu, I can play with the CRT effects, but zebra lines appear at the four corners of the screen (especially when screen is white like on SEGA logo in Sonic Games).
I have a bartop with a 4:3 screen (I don’t know the exact resolution). Interesting fact is that I have the same phenomenon on the Retroid Pocket 2+, also equipped with a 4:3 screen. I wonder if the ratio aspect could be the reason of my problem (I partially improved the situation by modifying the warpX and warpY parameters of the shader without retroarch but with Batocera, I don’t know how to modify that).
What do you think and especially what can I do to solve these artifacts? Thank you !