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Reference-white standards to scale HDR media sources so diffuse white lands at UE scene-linear 1.0, and vice-versa.
| Name | EMediaReferenceWhite |
| Type | enum |
| Header File | /Engine/Source/Runtime/MediaAssets/Public/BaseMediaSourceColorSettings.h |
| Include Path | #include "BaseMediaSourceColorSettings.h" |
Syntax
enum EMediaReferenceWhite
{
MRW_None = 0 UMETA(DisplayName = "None", ToolTip = "The source reference white is not overridden, defer to system/default behavior."),
MRW_DisableNormalization = 1 UMETA(DisplayName = "Disable Normalization", ToolTip = "Explicitly preserve input/native scaling."),
MRW_BT2408 = 2 UMETA(DisplayName = "BT.2408 (203 nits)", ToolTip = "ITU-R BT.2408 Reference White. 203 cd/m2 for PQ (ST2084), 75% signal for HLG scale to scene linear white (1.0)."),
MRW_BT1886 = 3 UMETA(DisplayName = "BT.1886 (100 nits)", ToolTip = "ITU-R BT.1886 SDR reference white (100 cd/m2). Scales PQ (100-nit paper white) and HLG (in-house 100-nit convention on a 1000 cd/m2 BT.2100 reference display) to scene linear white (1.0)."),
MRW_MAX = 4 UMETA(Hidden),
}
Values
| Name | Remarks |
|---|---|
| MRW_None | |
| MRW_DisableNormalization | |
| MRW_BT2408 | |
| MRW_BT1886 | |
| MRW_MAX |