AMD’s Radeon Image Sharpening feature is designed to improve image quality with minimal performance costs. However, it is only supported by Radeon Polaris / Vega / Navi graphics cards and only under Microsoft Windows 10. An independent open-source project has implemented contrast adaptive sharpening support for Vulkan that is similar to Radeon Image Sharpening but will work for any Vulkan-enabled GPU — including NVIDIA GPUs.
vkBasalt is this new open-source project that provides contrast adaptive sharpening for any Vulkan game with its implementation being a Vulkan post-processing layer. With being implemented as a Vulkan layer, it’s effectively GPU/driver-independent and in this case once installed can be loaded with the ENABLE_VKBASALT / ENABLE_VKBASALT32 environment variables.