AMD hints at open-sourcing FSR 4 after accidental release forces the company's hand

AMD FSR 4 Moves Toward Open-Source Release

AMD is signaling a shift in strategy for its latest upscaling technology. During a Q&A session at CES, Andrej Zdravković, AMD's president of GPU Technologies and Chief Software Officer, suggested that AMD FSR 4 will eventually become open-source technology. The company plans to open-source the software library while keeping the core AI model proprietary to maintain competitive advantages against rivals like Nvidia DLSS 1

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When pressed by Chips and Cheese's George Cozma about specific plans, Zdravković stated that open-sourcing "is in AMD's heart and mind" and confirmed "that's the long-term plan" 1

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. The executive emphasized AMD intends to "work as openly as possible" while protecting core technology from competitors, particularly Nvidia engineers 2

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Accidental Release Changed the Game

The discussion comes after an accidental public release of its code in August, when someone at AMD mistakenly uploaded source code for the FidelityFX SDK to GitHub. Though AMD quickly removed the files, the brief availability was enough for the community to access critical components. The FidelityFX SDK carries a broad MIT license, except for specific files, raising questions about whether AMD can legally restrict access to material that was arguably MIT-licensed, even momentarily 1

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Zdravković acknowledged the accidental release was "unexpected" but appears to have influenced AMD's thinking about FSR 4's future distribution model 2

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. The incident effectively demonstrated that keeping FidelityFX Super Resolution 4 exclusive to RDNA 4 hardware may no longer be realistic.

Modders Adapted the Technology for Older Hardware

Following the leak, modders quickly tweaked the algorithm to run on RDNA 3 and older graphics cards, and even got it working on Nvidia's 3000-series GeForces. While this comes with substantial performance penalties compared to native RDNA 4 execution, many users found the quality-versus-performance tradeoff worthwhile given FSR 4's significantly improved output 1

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. Modders have successfully enabled FSR 4 on RDNA 2-powered Radeon 6000-series cards as well .

This development matters because FSR 4 represents a fundamental shift in AMD's approach. Unlike previous versions that ran entirely on standard shaders, FSR 4 requires access to matrix units in RDNA 4 GPUs and uses neural networks for frame interpolation and upscaling artifact correction—similar to how Nvidia DLSS operates .

What Open-Source FSR 4 Means for Users

Previous FSR iterations, including version 3.1.5 and older, are already available on GitHub under open-source licenses. An official open-source release of FSR 4 upscaling and frame generation could enable third-party developers to create more user-friendly implementations than AMD's Adrenalin software, which some users find clunky despite improvements .

The strategic decision to keep core technology closed makes business sense. By protecting the neural networks and their weights, AMD prevents Intel and Nvidia from analyzing proprietary AI systems that could inform competing technologies. However, opening the surrounding software library could accelerate FSR 4 adoption across games and platforms while maintaining AMD's competitive edge.

Watch for AMD to officially republish the FSR 4 repository on GitHub soon, as the company navigates balancing openness with protecting intellectual property in an increasingly AI-driven graphics landscape. The Redstone technology's future now appears tied to community collaboration rather than hardware exclusivity.