Opti Scaler is a community-driven project that aims to bring the benefits of upscaling and frame generation across GPU brands. This ensures gamers can still enjoy smooth playability when a game does not include the upscaling or frame-generation technology offered by their GPU vendor.
The community has successfully modded AMD FSR 4.1.2 to run on Intel Arc GPUs by leveraging the Intel XMX cores, short for Xe Math Extensions. Until now, FSR on Arc has relied on a fallback DP4a path, which delivers a significantly smaller performance benefit than the XMX-accelerated approach.
To test the mod, Darker Than Lp Dark on Reddit ran FSR 4.1.2 Lite on an Arc B580 in "Clair Obscur: Expedition 33." The results were compared against the game's native Xe SS implementation and FSR's standard DP4a implementation on Arc GPUs. The latest Opti Scaler mod delivered performance almost identical to Xe SS (SR), with FSR 4.1.2 Lite logging an upscaling time of 0.59 ms compared to 0.58 ms for Xe SS (SR).
The results show that the XMX-based approach can close much of the gap that existed with FSR's DP4a fallback on Intel hardware. For Arc owners, this means access to FSR upscaling in games that lack native support, with performance much closer to the best available option on their GPU.
Source: TechPowerUp News · Summarized by HeadlinesBriefing