Overview

• Reporters and community members captured screenshots and commit history showing the full FSR 4 source was briefly public on AMD's GPUOpen GitHub before being taken down.
• The exposed directories included duplicate FP8 and INT8 shader paths, indicating AMD has explored a lower‑precision variant of FSR 4.
• FSR 4 targets RDNA 4 GPUs with FP8/FP32 workloads on AI accelerators, while an INT8 path would likely trade image quality for wider hardware support on older Radeon cards.
• AMD has not issued a detailed public explanation or confirmed plans to release INT8 support, and coverage characterizes any broader compatibility as unconfirmed.
• The incident coincided with the FidelityFX SDK 2.0 rollout, which delivers FSR 4 to developers with signed DLLs and an Unreal Engine 5 plugin and lays groundwork for upcoming ML features such as Redstone.