Thursday, January 31, 2019

RetroArch Wii U Slang Shaders

RetroArch on Wii U has supported slang shaders for a long time, but it's really hard to find them online. I found a pack of them, though, and decided to rehost it here. Hopefully, more people will get to enjoy them now.

Unfortunately, the GPU on the Wii U isn't particularly powerful, so relatively few run full speed, and there seem to be some weird scaling issues going on, leading to slightly uneven scanlines at times and broken xBR/Hqx effects. LUTs are also wonky, apparently, as many of the LUT-based mask effects are just scaled up to fit the screen instead of tiled across it.

EDIT: I thought the scaling issues might have been caused by it rendering at 720p and then upscaling to 1080p, so I changed the Wii U's output res to 720p but it still has a bunch of ugly issues. Mask effects are completely terrible. Currently, I'm just using misc/interlacing at a 2x scale to get even scanlines.

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