[HELP] Shader for 3d rendered 2d

Hi, I'm looking for a shader that can improve or upscale the appearance for 3d rendered 2d. Most 2d shaders do nothing for the background. If anything they get more blurry. I have tried with scale2x from guest.r, hq4x, xbr5 shaders and other 2d shaders. In retroarch there is a 3d version of xbr, but I wonder if there was something similar in reshade. Please help!