Custom PPSSPP shaders

[LunaMoo]

Many games stretch textures, if you use xBRZ it will be scaled with choosen power and then stretched, if you use post process, even similar effect will have to work with already stretched texture, in other words the effect will NOT be the same, this get's very obvious in "pixel art" any effects that zoom-in and out as well as for anything which starts blurry.
Another thing when you scale a texture that's it, if game uses a surface with that texture it moves exactly same pixels, if however same surface get's processed in real time via post process effect, algorithm will work slightly differently around the edges causing nasty pattern movements.