countervolts / d4r

# d4r (dlss 4 radeon)
want to run xess (xmx) on radeon? check out x4r!
d4r runs NVIDIA's official DLSS Super Resolution (`nvngx_dlss.dll`) and experimental Ray Reconstruction (`nvngx_dlssd.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 kernels replaced by hand-written RDNA2, RDNA3 and RDNA4 code.
**Supported DLSS models:** DLSS 3 CNN (E), DLSS 4 transformer (K, default), and DLSS 4.5 transformer (M, plus L for Ultra Performance). Ray Reconstruction presets D, E and F are experimental (building). DLSS 5 is PURPOSELY not supported.
**Proof of concept:** d4r shows that DLSS can run on an AMD GPU, but it is not really that practical for everyday use yet. It depends on unreleased patches to ZLUDA and vkd3d-proton. See supported games for the tested games and models.
> **Not affiliated with NVIDIA or AMD.**
To contact me my discord is `._ayo`. or join the d4r discord server
## Results
DLSS Ultra Performance demo video · more videos
Radeon RX 7700 XT (RDNA3, gfx1101), SILENT HILL Townfall at 2560×1440, every DLSS result is presented in the frame it belongs to (no added latency).
| Mode | DLSS 3 CNN (preset E) | DLSS 4 (preset K) | DLSS 4.5 (preset M) | FSR 4\* |
|---|---|---|---|---|
| Quality (1705×960) | **71.7** fps | 67.9 | 49.3 | 76.0 |
| Balanced (1488×837) | **80.8** | 75.9 | 58.0 | 84.5 |
| Performance (1280×720) | **89.7** | 84.1 | 69.0 | 94.0 |
| Ultra Performance (853×480) | 89.1 | **95.5** | 92.2 | 107.3 |
\* FSR 4 was measured on 2026-09-27, the DLSS columns on 2026-09-29, when the same machine ran about 2–4% slower overall. Native 2560×1440 without upscaling (the game's TSR at 100%) runs at 49.1 fps on the same walk. How the numbers were measured: docs/performance.md.
## Switching models and FSR in game
Open OptiScaler's menu (Insert):
- **DLSS model:** under DLSS Settings, tick *Render Presets Override*, pick the preset (E, K, L or M) and press *Apply Changes*. Unticking it returns to `[DLSS] Model` in `d4r/d4r.ini`.
- **FSR:** set *Upscaler (DX12)* to *FSR 3.X/4*. RDNA3 and RDNA4 get FSR 4.1 (needs GE-Proton, which supplies AMD's FSR 4 library); other GPUs get FSR 3.1.
Both are on by default; `[OptiScaler] FollowPresets` and `Fsr4` in `d4r.ini` turn them off.
Experimental XeFG/FSR frame generation and XeLL/Anti-Lag latency conversion
are available through an opt-in per-game setup command, with INI backups. Fresh installs keep them off.
## Known issues
- In some games using some models native upscaling can show visible artifacting. For fidelity over speed, set `[Kernels] PreferAccuracy = true` in `d4r/d4r.ini` (native kernel numerics).
## GPU support
!WE ARE LOOKING FOR VIDEOS OF IT WORKING, IF YOU HAVE A MENTIONED HERE AND DOESNT HAVE A VIDEO PLEASE TAKE ONE!
| GPU | Chip | Native kernels | Runtime testing |
|---|---|---|---|
| RX 7700 XT, RX 7800 XT, RX 7700, Radeon PRO W7700 | gfx1101 | K, M, L (W