This Tonemapper simulates the human perception of light. It leverages the OKLab space to return undistorted colors and simulates the human vision in low light conditions (scotopic-mesopic-photopic vision).
Engine Exposure is remapped to a Perceptual Exposure so dark scenes will always read as dark and bright scenes as bright, handling the transition between the two.
Advanced Lightroom-like Color Grading: the Nuke-Style color grading is bypassed to offer you a much more intuitive and better working option. Apply tints based on luminance or edit the appearance of specific hues of colors with absolute precision.
One-click Apply / Revert with a backup-first safety model, no engine source change needed.
Compatible with Post Process features.

Number of Blueprints: 0

Number of C++ Classes: 4 (plus 2 parameter structs)

Network Replicated: No

Supported Development Platforms: Windows

Supported Target Build Platforms: Windows

Supported Engine Versions: 5.5

Documentation: [DOCS URL]

Example Project: Showcase map included in the Plugin Content folder.

The plugin patches two engine post-process shader files (PostProcessTonemap.usf, PostProcessCombineLUTs.usf) on disk when applied. Originals are backed up first and restored on Revert / editor shutdown.
SDR (sRGB) display output only.
Each shipped map must be saved once with the tonemapper active (see Doc).
Revert before disabling the plugin or upgrading/hotfixing the engine.

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