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API > API/Runtime > API/Runtime/Engine > API/Runtime/Engine/HLSLTree
Inheritance Hierarchy
- FNode
- FOwnedNode
- FExpression
- FExpressionSwitchBase
- FExpressionDistanceFieldsRenderingSwitch
- FExpressionFeatureLevelSwitch
- FExpressionFinalShadingModelSwitch
- FExpressionLandscapeLayerSwitch
- FExpressionQualitySwitch
- FExpressionShaderStageSwitch
- FExpressionShadingPathSwitch
- FExpressionVirtualTextureFeatureSwitch
References
| Module | Engine |
| Header | /Engine/Source/Runtime/Engine/Public/HLSLTree/HLSLTreeCommon.h |
| Include | #include "HLSLTree/HLSLTreeCommon.h" |
Syntax
class FExpressionSwitchBase : public UE::HLSLTree::FExpression
Variables
| Type | Name | Description | |
|---|---|---|---|
 |
const FExpression *[MaxInputs] | Input | |
 |
int8 | NumInputs |
Constructors
| Type | Name | Description | |
|---|---|---|---|
 |
FExpressionSwitchBase
(
TConstArrayView< const FExpression* > InInputs |
Functions
| Type | Name | Description | |
|---|---|---|---|
  |
bool | IsInputActive
(
const FEmitContext& Context, |
|
  |
const FExpression * | NewSwitch
(
FTree& Tree, |
Overridden from FExpression
| Type | Name | Description | |
|---|---|---|---|
   |
void | ComputeAnalyticDerivatives
(
FTree& Tree, |
Create new expressions representing DDX/DDY of this expression |
   |
const FExpression * | ComputePreviousFrame
(
FTree& Tree, |
Creates a new expression representing this expression on the previous frame. |
   |
void | EmitValuePreshader
(
FEmitContext& Context, |
Emit Preshader code representing this expression |
   |
void | EmitValueShader
(
FEmitContext& Context, |
Emit HLSL shader code representing this expression |
   |
bool | PrepareValue
(
FEmitContext& Context, |
Computes a FPreparedType for this expression, given a FRequestedType. |
Constants
| Name | Description |
|---|---|
| MaxInputs |