🎨 Custom Tone Mappers — Six Industry-Standard Curves for Cinematic Color

Unreal Engine ships with Only ACES. Custom Tone Mappers adds six battle-tested tone mapping operators to your post-process pipeline, each implemented from the original papers and presentations. Switch between them in a single dropdown from Project Settings. No engine modifications, no source rebuild, no Post Process Material hacks — just a clean SceneViewExtension that hooks the pipeline at the right place.

Compare looks side by side. Match a film reference. Hit a target HDR workflow. All from one panel.

🎬 TONE MAPPING OPERATORS

• AgX (Sobotka / Wrensch) — Natural, photographic results with graceful highlight rolloff. Three looks: Default, Golden, Punchy

• GT Uchimura — CEDEC 2017 curve with six parameters: max brightness, contrast, linear start/length, black tightness, pedestal

• Reinhard Jodie — Classic 2002 operator, parameter-less variant with proper hue preservation

• Reinhard Extended — Configurable white point for controlled highlight mapping

• Hable Filmic — Uncharted 2 GDC 2010 curve with full A-F + W parameter control plus exposure bias

• Hejl-Burgess-Dawson — The iconic HL2 / Source-era filmic look, no parameters needed.

• Linear (Passthrough) — No curve applied, for HDR external workflows or debug

🎯 PIPELINE INTEGRATION

• Native SceneViewExtension — no engine source modification required

• Inserted before the engine tonemap pass, native filmic curve neutralized automatically

• Real-time preview in editor viewport AND Play-in-Editor

• Compatible with Movie Render Queue for offline cinematics

• Compatible with all standard Post Process Volumes and post-process materials

⚙️ FULL PARAMETER CONTROL

• Global exposure compensation (±10 stops) on top of auto/manual exposure

• Per-operator parameters exposed in Project Settings with live updates

• EditCondition hides irrelevant parameters when switching operators

• All settings stored in DefaultEngine.ini for Git versioning

⚠️ Important Notes

• The plugin neutralizes Unreal's native Filmic tone curve when active (ToneCurveAmount, FilmSlope, FilmToe, FilmShoulder set to neutral values).

• Disable the plugin to restore native ACES behavior.

• Not designed for HDR display output (PQ / scRGB / Rec.2020). For HDR monitor pipelines, use Linear mode and handle display encoding externally, or disable the plugin.

• Mobile platforms (ES3.1) are not supported.

• This plugin only affects rendering. It does not include color grading, LUT, white balance or any other post-process features.
  

🛠 Supported Engine Versions

Unreal Engine 5.3 and above (5.4, 5.5, 5.6, 5.7 fully tested)

📚 Documentation 💬 Discord

🛠 All asset maps are not included*