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ayo b2b3781aca Fix DLSS artifacts and improve synchronization diagnostics

- Fix Cyberpunk 2077 preset-K black artifacts by preserving FP16/FP64
  denormal requirements while limiting denormal suppression to FP32.

- Fix stale direct-output redirects after array destruction, preventing
  reused handles from inheriting an earlier feature's output buffer.

- Log rejected resource formats and dimensions, including failures after
  startup, with rate limiting for repeated errors.

- Add opt-in blocking output synchronization with a dedicated bridge
  export and fallback to context synchronization.

- Report output-wait CPU and wall time, and defer GPU timing queries
  until asynchronous evaluation has completed. The CPU-overhead
  mitigation for #7 still needs reporter confirmation.

- Reject release libraries requiring GLIBC newer than the configured
  baseline, defaulting to 2.41, and document compatible builds.

Validation: shim and bridge builds pass; targeted redirect-lifetime and
format-logging checks pass.

Fixes #5
Fixes #8
Refs #7

2026-09-30 23:17:25 -04:00

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Supported games

The following DirectX 12 games run DLSS Super Resolution through d4r on the tested Radeon RX 7700 XT Linux setup with GE-Proton 11-3. All three documented DLSS models run in each game; image-quality issues are noted in the table.

Game	E: DLSS 3 CNN	K: DLSS 4	M: DLSS 4.5
SILENT HILL Townfall	Works	Works	Works
Ghost of Tsushima DIRECTOR'S CUT	Works	Works	Works
Ready or Not	Works	Works; visible graphical artifacts with hdr enabled	Works
Clair Obscur: Expedition 33	Works	Works	Works
Marvel's Spider-Man: Miles Morales	Works	Works; minor artifacts when HDR enabled and while the game is paused	Works
The Last of Us Part I	Works	Works; visible graphical artifacts, including with HDR enabled	Works
Control Ultimate Edition	Works	Works	Works
Cyberpunk 2077	Works; occasional visual artifacts during gameplay	Works	Works
Alan Wake 2	Works	Works	Works
SILENT HILL 2 (2024)	Works	Works	Works
Subnautica 2	Works	Works; visible artifacts at Quality (other quality modes are fine)	Works
Horizon Zero Dawn Remastered	Works; stutters	Works	Works
Ratchet & Clank: Rift Apart	Works; occasional artifacts in the pause menu	Works; minor artifacts with HDR enabled and occasionally in the pause menu	Works; occasional artifacts in the pause menu
Dying Light: The Beast	Works	Works	Works; small visual artifacts throughout

Unsupported games:

DOOM: The Dark Ages: the game uses Vulkan and has no D3D12 mode. d4r currently supports D3D12 DLSS only, so its DLSS calls cannot reach d4r. The game's hardware ray-tracing requirement is separate from this limitation.

General notes:

Select DLSS in the game's graphics settings where it is offered. OptiScaler can also feed DLSS from a game's FSR or XeSS inputs, but those are a fallback for games that hide DLSS and can ghost or show a black screen.
d4r supports DLSS Super Resolution only. Keep DLSS Ray Reconstruction off in games that offer it (such as Cyberpunk 2077 and Alan Wake 2); Control requests it whenever ray tracing is on and crashes.
Saving settings from the OptiScaler overlay ("Save INI") rewrites OptiScaler.ini and resets d4r's values to auto, including frame generation ([FrameGen] Enabled=false, FGInput=nofg, FGOutput=nofg) and [Inputs] EnableDlssInputs=true. Restore them afterwards, or keep a copy of the original file.

Game-specific setup:

The Last of Us Part I: the game's Streamline integration crashes on boot with OptiScaler. Rename sl.common.dll in the game folder to sl.common.dll.bak and select FSR 3.1 in the game's graphics settings; OptiScaler passes it to DLSS through d4r.
Control Ultimate Edition: turn ray tracing off. With ray tracing on, the game requests DLSS Ray Reconstruction, which d4r does not support, and crashes when loading into gameplay.
Cyberpunk 2077: GE-Proton 11-3 loads Wine's own ICU libraries instead of the game's, and the game aborts at launch (unimplemented function icuuc.dll.u_setMemoryFunctions_65). Add WINEDLLOVERRIDES="icuuc,icuin=n,b" to the launch options (fixed in GE-Proton 11-4).
Alan Wake 2: with the game's own DLSS inputs, every model shows heavy ghosting. Set AutoExposure=true under [InitFlags] in OptiScaler.ini (or enable auto exposure in the OptiScaler overlay), or select FSR 3.1 in the game instead so OptiScaler passes FSR inputs to DLSS.
Horizon Zero Dawn Remastered: the game loads dxgi.dll only from the Windows system folder, so OptiScaler is never loaded under that name. Rename dxgi.dll to version.dll and add WINEDLLOVERRIDES="version=n,b" to the launch options. d4r's d3d12core.dll is still picked up from the game folder.
Ratchet & Clank: Rift Apart: set Dxgi=false in OptiScaler.ini. With ray tracing on, OptiScaler's DXGI spoofing crashes the game at startup on AMD GPUs; the PROTON_FORCE_NVAPI=1 launch option already reports an NVIDIA GPU.
Dying Light: The Beast: use DLSS inputs; with FSR or XeSS inputs the screen stays black. The game passes its motion vectors as R16G16B16A16_TYPELESS, which needs a d4r build from 2026-09-28 or later (older builds reject every frame and show a black screen).

Choose a model with Model = E, Model = K, or Model = M under [DLSS] in the game's d4r/d4r.ini. Model compatibility does not imply equal performance; see the Townfall measurements for measured frame rates.

4.5 KiB Raw Blame History

Supported games

4.5 KiB

Raw Blame History