Feature Request: AMD FSR 4 Implementation for PoE 2 & 1

Hello GGG Team,

Path of Exile 1 and 2 currently support AI upscaling via XeSS (Intel) and DLSS (Nvidia). However, AMD users with modern hardware currently lack a comparable AI upscaling option.

AMD has confirmed FSR 4.1 will release for RDNA 3 in July 2026, with RDNA 2 support in early 2027 via an INT8 fallback path. Given AMD's open-source FidelityFX SDK, engine integration appears feasible.

The game already provides a hardware-agnostic fallback via native NIS for legacy systems. Adding AMD FSR 4 would complete the upscaling options, enabling users on modern AI-capable Radeon hardware to enjoy a comparable premium AI upscaling experience.

Thank you for your continuous work on the engine.

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