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  3. UMaterialExpressionSubstrateVolumetricFogCloudBSDF

UMaterialExpressionSubstrateVolumetricFogCloudBSDF

API > API/Runtime > API/Runtime/Engine

   
Name UMaterialExpressionSubstrateVolumetricFogCloudBSDF
Type class
Header File /Engine/Source/Runtime/Engine/Public/Materials/MaterialExpressionSubstrate.h
Include Path #include "Materials/MaterialExpressionSubstrate.h"

Syntax

UCLASS (MinimalAPI, CollapseCategories, HideCategories=Object,  
       DisplayName="Substrate Volumetric-Fog-Cloud BSDF")  
class UMaterialExpressionSubstrateVolumetricFogCloudBSDF : public UMaterialExpressionSubstrateBSDF

Inheritance Hierarchy

Constructors

Name Remarks Include Path Unreal Specifiers

UMaterialExpressionSubstrateVolumetricFogCloudBSDF ( const FObjectInitializer& ObjectInitializer
)

   Materials/MaterialExpressionSubstrate.h  

Variables

Public

Name Type Remarks Include Path Unreal Specifiers
Albedo FExpressionInput The single scattering Albedo defining the overall color of the Material (type = float3, unit = unitless, default = 0) Materials/MaterialExpressionSubstrate.h  
AmbientOcclusion FExpressionInput Ambient occlusion: 1 means no occlusion while 0 means fully occluded. Materials/MaterialExpressionSubstrate.h  
bEmissiveOnly uint32 Enabling this corresponds to selecting the Unlit shading model from the legacy material system. Materials/MaterialExpressionSubstrate.h
  • EditAnywhere
  • Category=Shading
  • Meta=(DisplayName="Unlit (EmissiveOnly)")
EmissiveColor FExpressionInput Emissive color of the medium (type = float3, unit = luminance, default = 0) Materials/MaterialExpressionSubstrate.h  
Extinction FExpressionInput The rate at which light is absorbed or scattered by the medium. Materials/MaterialExpressionSubstrate.h  

Functions

Public

Overridden from UMaterialExpression

Name Remarks Include Path Unreal Specifiers

virtual int32 Compile ( FMaterialCompiler* Compiler,
int32 OutputIndex
)

 Create the new shader code chunk needed for the Abs expression Materials/MaterialExpressionSubstrate.h  

virtual 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. Materials/MaterialExpressionSubstrate.h  

virtual void GetCaption ( TArray< FString >& OutCaptions
) const

 Returns the text to display on the material expression (in the material editor). Materials/MaterialExpressionSubstrate.h  

virtual EMaterialValueType GetInputValueType ( int32 InputIndex
)

   Materials/MaterialExpressionSubstrate.h  

virtual EMaterialValueType GetOutputValueType ( int32 OutputIndex
)

   Materials/MaterialExpressionSubstrate.h  

virtual bool IsResultSubstrateMaterial ( int32 OutputIndex
)

 Marks certain expression types as outputting Substrate material. Materials/MaterialExpressionSubstrate.h  
A starta material is a tree with FrontMateiral being its root and BSDF being leaves, with operators in the middle. Materials/MaterialExpressionSubstrate.h  

Static

Name Remarks Include Path Unreal Specifiers

static int32 CompileCommon ( FMaterialCompiler* Compiler,
FExpressionInput& Albedo,
FExpressionInput& Extinction,
FExpressionInput& EmissiveColor,
FExpressionInput& AmbientOcclusion,
bool bEmissiveOnly,
const UMaterialEditorOnlyData* EditorOnlyData
)

   Materials/MaterialExpressionSubstrate.h  

static FSubstrateOperator * SubstrateGenerateMaterialTopologyTreeCommon ( FMaterialCompiler* Compiler,
FGuid ThisExpressionGuid,
UMaterialExpression* Parent,
int32 OutputIndex,
const FExpressionInput& EmissiveColor,
const FExpressionInput& AmbientOcclusion
)

   Materials/MaterialExpressionSubstrate.h  

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