AMD hints FSR 4 could go open-source after the GitHub slip, but even if that’s true, it does not mean RDNA3 will support it officially
AMD is hinting that FSR 4 might still get an official open-source release. During a CES Q&A, Andrej Zdravković said AMD wants to “work as openly as possible,” and when pressed on specifics, added “ that’s the long-term plan, ” while also repeating that “ open sourcing is in [AMD’s heart and mind]”.
This comes after AMD’s FSR 4 code briefly appeared online in August 2025 as part of an updated FidelityFX SDK drop on GitHub. AMD later confirmed it was a mistake, saying it was an error and the company has already removed these files (note it took many days).
The MIT license grants broad rights to “use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies” as long as the copyright and license notice stay attached. If someone pulled the repo while it was up under MIT terms, taking it down later does not automatically erase the rights already granted for that copy. That is why the leak is hard to “put back” in the practical sense.
One thing to note is that open-sourcing does not mean FSR 4 will suddenly run well on RDNA 2 or RDNA 3 . While modders already got it running on older cards, it was with a performance hit compared to newer hardware. If AMD follows through with only a partial source release, it is still a modder who ends up doing the porting, tuning, and long-term maintenance work that AMD is not shipping for older Radeon owners.
FSR4 is part of Redstone, but only for the RDNA4 series, Source: AMD
This is also why the whole FSR 4 and Redstone situation feels flat for RX 6000 and RX 7000 users. Redstone is being positioned as RX 9000 only, and AMD has not given a clear public breakdown of what is blocked by hardware limits versus what is blocked by product policy. AMD has also put RX 5000 and RX 6000 into a maintenance track on the driver side, which makes the “older cards get less” story feel baked in.
NVIDIA is catching heat too, because DLSS 4.5 is heavier and NVIDIA says it makes no performance guarantees on RTX 20 and RTX 30. The difference is that NVIDIA is still letting a gamer pick model versions in the NVIDIA App, and it has been direct that newer GPUs benefit from FP8 acceleration.
Source: Tom’s Hardware
