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  3. FShaderParameterParser

FShaderParameterParser

Validates and moves all the shader loose data parameter defined in the root scope of the shader into the root uniform buffer.

API > API/Runtime > API/Runtime/RenderCore

References

   
Module RenderCore
Header /Engine/Source/Runtime/RenderCore/Public/ShaderParameterParser.h
Include #include "ShaderParameterParser.h"

Syntax

class FShaderParameterParser

Remarks

Validates and moves all the shader loose data parameter defined in the root scope of the shader into the root uniform buffer.

Variables

  Type Name Description
Protected variable bool bBindlessResources  
Protected variable bool bBindlessSamplers  
Protected variable bool bModifiedShader Indicates that the shader source was actually modified.
Protected variable bool bMovedLoosedParametersToRootConstantBuffer Indicates that parameters were actually moved to the root constant buffer.
Protected variable bool bNeedToMoveToRootConstantBuffer Indicates that parameters should be moved to the root cosntant buffer.
Protected variable FString OriginalParsedShader  
Protected variable TMap< FString, FParsedShaderParameter > ParsedParameters  
Protected variable const FPlatformConfiguration & PlatformConfiguration  

Constructors

  Type Name Description
Public function    
Public function  

FShaderParameterParser ( const FPlatformConfiguration& InPlatformConfiguration
)

  

Destructors

  Type Name Description
Public function Virtual    

Functions

  Type Name Description
Protected function void

ApplyBindlessModifications ( FString& PreprocessedShaderSource
)

 Converts parsed parameters into their bindless forms.
Public function Const bool  
Protected function Const void

ExtractFileAndLine ( int32 PragamLineoffset,
int32 LineOffset,
FString& OutFile,
FString& OutLine
)

  
Public function Const const FParsedShaderParameter &

FindParameterInfos ( const FString& ParameterName
)

 Gets parsing information from a parameter binding name.
Public function Const const FParsedShaderParameter *

FindParameterInfosUnsafe ( const FString& ParameterName
)

  
Protected function Const FString Generates shader source code to declare a bindless resource or sampler (for automatic bindless conversion).
Public function Static FStringView  
Public function Const void

GetParameterFileAndLine ( const FParsedShaderParameter& ParsedParameter,
FString& OutFile,
FString& OutLine
)

 Gets file and line of the parameter in the shader source code.
Protected function bool

MoveShaderParametersToRootConstantBuffer ( const FShaderParametersMetadata* RootParametersStructure,
FString& PreprocessedShaderSource
)

 Moves parsed parameters into the root constant buffer.
Public function bool

ParseAndModify ( const FShaderCompilerInput& CompilerInput,
TArray< FShaderCompilerError >& OutErrors,
FString& PreprocessedShaderSource
)

  
Public function Static EShaderParameterType  
Public function Static EShaderParameterType  
Protected function bool

ParseParameters ( const FShaderParametersMetadata* RootParametersStructure,
TArray< FShaderCompilerError >& OutErrors
)

 Parses the preprocessed shader code
Protected function EShaderParameterType  
Public function Static bool  
Protected function void

RemoveMovingParametersFromSource ( FString& PreprocessedShaderSource
)

  
Public function Const void

ValidateShaderParameterType ( const FShaderCompilerInput& CompilerInput,
const FString& ShaderBindingName,
int32 ReflectionOffset,
int32 ReflectionSize,
FShaderCompilerOutput& CompilerOutput
)

  
Public function Const void

ValidateShaderParameterType ( const FShaderCompilerInput& CompilerInput,
const FString& ShaderBindingName,
int32 ReflectionOffset,
int32 ReflectionSize,
bool bPlatformSupportsPrecisionModifier,
FShaderCompilerOutput& CompilerOutput
)

 Validates the shader parameter in code is compatible with the shader parameter structure.
Public function Const void

ValidateShaderParameterTypes ( const FShaderCompilerInput& CompilerInput,
FShaderCompilerOutput& CompilerOutput
)

  
Public function Const void

ValidateShaderParameterTypes ( const FShaderCompilerInput& CompilerInput,
bool bPlatformSupportsPrecisionModifier,
FShaderCompilerOutput& CompilerOutput
)

 Validates shader parameter map is compatible with the shader parameter structure.

Classes

  Type Name Description
Public struct FParsedShaderParameter    
Public struct FPlatformConfiguration    

Constants

Name Description
kBindlessSamplerArrayPrefix  
kBindlessSamplerPrefix  
kBindlessSRVArrayPrefix Prefix used to declare arrays of samplers/resources for bindless.
kBindlessSRVPrefix  
kBindlessUAVArrayPrefix  
kBindlessUAVPrefix  

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