openvr_fsr

This modified openvr_api.dll allows you to apply either AMD's FidelityFX SuperResolution or NVIDIA's Image Scaling to many SteamVR games, as long as they use D3D11.

FidelityFX Super Resolution (FSR for short) is an upscaling technique developed by AMD, but it works on pretty much any graphics card, including NVIDIA cards. The idea is that the game internally renders to a lower resolution, thus saving GPU time and reaching higher FPS, as long as it is not bottlenecked by the CPU. The resulting lower resolution render is then upscaled to the target resolution by FSR, with the aim of restoring some of the lost detail due to the lower resolution rendering. It does so in two steps - the first being the actual upscaling to the target resolution, where particular attention is paid to edges in the lower resolution picture. The second step is a sharpening step to counter some of the blur introduced by the upscaling.