Upscaler is a GTK4/libadwaita application that enhances and enlarges images up to four times their original size, with special modes for photos and digital art. It is a front-end for Real-ESRGAN ncnn Vulkan (media-gfx/realesrgan-ncnn-vulkan) — upstream targets the Upscayl-NCNN fork, but this ebuild wires it to the Gentoo-packaged Real-ESRGAN binary, which ships the realesrgan-x4plus and realesrgan-x4plus-anime models used by the app. World/Upscaler