UMaterialExpressionSubstrateShadingModels | Unreal Engine 5.4 Documentation

API > API/Runtime > API/Runtime/Engine > API/Runtime/Engine/Materials

Inheritance Hierarchy

UObjectBase
UObjectBaseUtility
UObject
UMaterialExpression
UMaterialExpressionSubstrateBSDF
UMaterialExpressionSubstrateShadingModels

References


Module	Engine
Header	/Engine/Source/Runtime/Engine/Classes/Materials/MaterialExpressionSubstrate.h
Include	#include "Materials/MaterialExpressionSubstrate.h"

Syntax

UCLASS (MinimalAPI, CollapseCategories, HideCategories=Object,  
       DisplayName="Substrate Shading Models")  
class UMaterialExpressionSubstrateShadingModels : public UMaterialExpressionSubstrateBSDF

Variables

Type	Name	Description
FExpressionInput	Anisotropy	Controls the anisotropy factor of the roughness.
FExpressionInput	BaseColor	Defines the overall color of the Material. (type = float3, unit = unitless, defaults to 0.18)
FExpressionInput	ClearCoat	Coverage of the clear coat layer. (type = float, unit = unitless, defaults to 0.0)
FExpressionInput	ClearCoatNormal	Take the bottom clear coat surface normal as input.
FExpressionInput	ClearCoatRoughness	Roughness of the top clear coat layer. (type = float, unit = unitless, defaults to 0.0)
FExpressionInput	ColorScaleBehindWater	A scale to apply on the scene color behind the water surface.
FExpressionInput	CustomTangent	Take the tangent output node as input.
FExpressionInput	EmissiveColor	Emissive color on top of the surface (type = float3, unit = luminance, default = 0)
FExpressionInput	Metallic	Controls how "metal-like" your surface looks like.
FExpressionInput	Normal	Take the surface normal as input.
FExpressionInput	Opacity	Opacity of the material
FExpressionInput	Roughness	Controls how rough the Material is.
FShadingModelMaterialInput	ShadingModel	Shading models
TEnumAsByte< enum EMaterialShadingModel >	ShadingModelOverride
FExpressionInput	Specular	Used to scale the current amount of specularity on non-metallic surfaces and is a value between 0 and 1 (type = float, unit = unitless, defaults to plastic 0.5)
FExpressionInput	SubSurfaceColor	Scale the mean free path radius of the SSS profile according to a value between 0 and 1.
TObjectPtr< class USubsurfaceProfile >	SubsurfaceProfile	SubsurfaceProfile, for Screen Space Subsurface Scattering.
FExpressionInput	Tangent	Take a surface tangent as input.
FExpressionInput	TransmittanceColor	The amount of transmitted light from the back side of the surface to the front side of the surface (type = float3, unit = unitless, defaults to 1)
FExpressionInput	WaterAbsorptionCoefficients	The rate at which light is absorbed or out-scattered by the medium.
FExpressionInput	WaterPhaseG	Anisotropy of the volume with values lower than 0 representing back-scattering, equal 0 representing isotropic scattering and greater than 0 representing forward scattering.
FExpressionInput	WaterScatteringCoefficients	The single scattering Albedo defining the overall color of the Material (type = float3, unit = unitless, default = 0)

Constructors

	Type	Name	Description
		UMaterialExpressionSubstrateShadingModels ( const FObjectInitializer& ObjectInitializer )

Functions

	Type	Name	Description
	bool	HasAnisotropy ()
	bool	HasSSS ()

Overridden from UMaterialExpression

Type	Name	Description
int32	Compile ( FMaterialCompiler* Compiler, int32 OutputIndex )	Create the new shader code chunk needed for the Abs expression
void	GatherSubstrateMaterialInfo ( FSubstrateMaterialInfo& SubstrateMaterialInfo, int32 OutputIndex )	Recursively parse nodes outputing Substrate material in order to gather all the possible shading models used in a material graph output a Substrate material.
void	GetCaption ( TArray< FString >& OutCaptions )	Returns the text to display on the material expression (in the material editor).
void	GetConnectorToolTip ( int32 InputIndex, int32 OutputIndex, TArray< FString >& OutToolTip )	Get a tooltip for the specified connector.
FName	GetInputName ( int32 InputIndex )
uint32	GetInputType ( int32 InputIndex )
uint32	GetOutputType ( int32 OutputIndex )
bool	IsResultSubstrateMaterial ( int32 OutputIndex )	Marks certain expression types as outputting Substrate material.
FSubstrateOperator *	SubstrateGenerateMaterialTopologyTree ( FMaterialCompiler* Compiler, UMaterialExpression* Parent, int32 OutputIndex )	A starta material is a tree with FrontMateiral being its root and BSDF being leaves, with operators in the middle.