TWPatcher - DS(i) mode screen filters and patches
gbatemp.net
Based on the 3 filters (1x (START+SELECT), 1.25x (default), and 1.5x (used only in GBA mode)) found inside TWL_FIRM, I reverse engineered most of the capture card's image processor (used to capture DS and GBA screens), and made my own filters to show that sharp upscaling can be done. But that's...

Just a reminder that this thing exists. I use it for all my DS games and it is a new experience to see them in Widescreen and upscaled on the 3DS screen.