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Unreal Engine C++ API Reference > Runtime > Engine > Materials
Inheritance Hierarchy
- UObjectBase
- UObjectBaseUtility
- UObject
- UMaterialExpression
- UMaterialExpressionSkyAtmosphereLightDirection
References
| Module | Engine |
| Header | /Engine/Source/Runtime/Engine/Classes/Materials/MaterialExpressionSkyAtmosphereLightDirection.h |
| Include | #include "Materials/MaterialExpressionSkyAtmosphereLightDirection.h" |
Syntax
class UMaterialExpressionSkyAtmosphereLightDirection : public UMaterialExpression
Variables
| Type | Name | Description | |
|---|---|---|---|
 |
int32 | LightIndex | Index of the atmosphere light to sample. |
Constructors
| Type | Name | Description | |
|---|---|---|---|
 |
UMaterialExpressionSkyAtmosphereLightDirection
(
const FObjectInitializer& ObjectInitializer |
Overridden from UMaterialExpression
| Type | Name | Description | |
|---|---|---|---|
  |
int32 | Compile
(
FMaterialCompiler* Compiler, |
Create the new shader code chunk needed for the Abs expression |
   |
bool | GenerateHLSLExpression
(
FMaterialHLSLGenerator& Generator, |
|
   |
void | GetCaption
(
TArray< FString >& OutCaptions |
Returns the text to display on the material expression (in the material editor). |