Citra: Nearest Neighbor Up-scaling (Specifically Text in USUM)

[GameboyLuke]

I was wondering if it would be possible to implement a feature that would upscale text in Citra (and potentially other elements) with the Nearest Neighbor upscaling method. As seen in a screenshot below, the font for the pokemon names and the dialogue is blurry since the game is upscaled but with a bicubic resizer creating a blurry product. I feel if the correct rescale method was used it would make it look more visually appealing and closer to the original.

Thanks :D

[BrysonHowell]

If this were to be implemented, would it be better for nearest neighbor up-scaling be applied to all images or just text/pixel art? I've looked into this a bit, and there are advantages and disadvantages to both methods. Maybe it would be best to introduce a setting that allow users to pick the up-scaling method they prefer.

[legoj15]

Selecting specific textures for nearest neighbor/no filter scaling is something that would require a non-trivial amount of effort. Dolphin has a setting to force filtering for all textures (and on the other hand, Ishiruka has a setting to force nearest neighbor for all textures). If those settings could be incorporated in a way that makes sense, I feel that that would be enough (since pokemon games are already "pixelated", having everything use nearest-neighbor wouldn't look too bad IMO)

[gameboycjp]

Having a drop-down with different texture filtering options would be really cool.

[poesdelal]

Even with "Enable linear filtering" option unchecked only part of textures and text looks sharp but others still looks blurry (like text in Pokemon on that screenshot)

[wwylele]

The recently added "Enable linear filtering" option is for post-processing part of the renderer where the final screen content is blit to the window. It has nothing to do with the internal texture filtering.