countervolts/d4r

NVIDIA's official DLSS 3/4/4.5 on AMD RDNA3/4 GPUs on Linux.

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d4r runs NVIDIA's official DLSS Super Resolution library (nvngxdlss.dll) in Windows games on AMD Radeon GPUs under Linux and Proton. The game asks for DLSS as usual; the DLSS network runs on the AMD GPU through ZLUDA (CUDA on ROCm/HIP), with the heaviest DLSS kernels replaced by hand-written RDNA3 and RDNA4 code. Supported DLSS models: DLSS 3 CNN (E), DLSS 4 transformer (K, default), and DLSS 4.5 transformer (M, plus experimental L). DLSS 5 is PURPOSELY not supported. Preset L is NVIDIA's DLSS 4.5 model for Ultra Performance, especially at 4K. Set [DLSS] Model = L in d4r.ini and select Ultra Performance in game or OptiScaler; selecting L alone does not change the input resolution. L shares M's native Swin layers and has its own texture-kernel build. Its unfolded input/output arithmetic remains translated, so performance and image quality need game testing; the M benchmarks below do not apply to L.…

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What this repository does

NVIDIA's official DLSS 3/4/4.5 on AMD RDNA3/4 GPUs on Linux.

Repository facts

Owner: countervolts
Primary language: C++
Stars: 163
Forks: 3
Open issues + pull requests: 6
License: Apache-2.0
Archived: No
Default branch: linux
Created: 2026-09-27T19:23:59.000Z
Last push: 2026-10-02T12:04:37.000Z

Topics and intended use

Owner-supplied topics: amd, dlss, hip, linux, linux-gaming, optiscaler, proton, radeon, rdna3, rocm, wine, zluda

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