'aces' — Narkowicz single-curve ACES fit (cheap, punchy).
'aces-fitted' — Hill RRT/ODT fit with the ACEScg color matrices; closer to
reference ACES (better hue retention + highlight roll-off).
'pbr-neutral' — Khronos PBR Neutral (glTF Sample Viewer): preserves hue and
saturation, rolling only the brightest values off to white.
Good for material/product viewing where albedo should read
true (no ACES-style film look).
'agx' — AgX (Godot 4's default): wide-gamut log + sigmoid that
desaturates highlights toward white. Soft, filmic, no
ACES hue-skew — the closest match to a Godot-rendered look.
Tonemap curve options:
'none'— clamp only (linear), no filmic roll-off.'aces'— Narkowicz single-curve ACES fit (cheap, punchy).'aces-fitted'— Hill RRT/ODT fit with the ACEScg color matrices; closer to reference ACES (better hue retention + highlight roll-off).'pbr-neutral'— Khronos PBR Neutral (glTF Sample Viewer): preserves hue and saturation, rolling only the brightest values off to white. Good for material/product viewing where albedo should read true (no ACES-style film look).'agx'— AgX (Godot 4's default): wide-gamut log + sigmoid that desaturates highlights toward white. Soft, filmic, no ACES hue-skew — the closest match to a Godot-rendered look.