The updates for the flow PSP/Ps1 emulator Adrenaline have been quiet as of late, but the developer rsn8887 have added a new graphics filter called sharp-bilinear-simple. This new addition brings sharper pixels to games and eliminates the slowdown of some ps1 games when it is applied, unlike bilinear it does not cause slowdown and in return gives sharper pixels and minimizes the blur in games.
It is not certain rather the flow will include this plugin with his release, but you are free to try it before or if it appears in the next official release. Also if you experience slowdown when this filter is used, please post the game that was played in the comments @hackinformer
Sharp bilinear filter
sharp bilinear filter without scanlines–thanks to @kood_infothief for the images
Installation
Adrenaline 6.7 must be installed already. To patch your Adrenaline, simply copy the file adrenaline_user.suprx to ux0:app/PSPEMUCFW/sce_module/ , overwriting the existing file.
In case something goes wrong, the original unpatched file is also provided, renamed to adrenaline_user_original.suprx
Recommended Settings
Smooth graphics have to be ON for the new option “Sharp bilinear without scanlines” to work correctly.
I recommend the following settings with this patch:
Handheld Vita
Graphics filtering: Sharp bilinear without scanlines
Smooth graphics: On
Screen Scale X (PSP): 2.000 (or 1.995 if you like it blurry)
Screen Scale Y (PSP): 2.000 (or 1.995 if you like it blurry)
Screen Scale X (PS1): 1.135
Screen Scale Y (PS1): 1.135
PSTV
Graphics filtering: Sharp bilinear without scanlines
Smooth graphics: On
Screen Scale X (PSP): 2.000 (or 1.995 if you like it blurry)
Screen Scale Y (PSP): 2.000 (or 1.995 if you like it blurry)
Screen Scale X (PS1): 1.185
Screen Scale Y (PS1): 1.000 (I had a typo here before that said 1.100, it should be 1.000!)
Download
adrenaline_user_original.suprx