I've already tested this by extracting the textures but there is no issues (but the textures are probably converted) Because Tapec says that issue is xBRZ fault: For the PS1 I think the black pixels issue is when a color is used as "alpha" channel, so you're right, for for PSP I don't know..
Hi Zenju, I just wanted to inform you, if you're not aware of this, that when your algorithm is used as texture scaler sometimes there is some black pixels and nearest parts. It's visible with PS1 (for exemple Crash Team Racing, Spyro 3, Digimon World and the really bad excalibur 2555 AD...) and PSP(Fired up) games... If these issues can be corrected it would be good. Thank you in advance!