#include <ShaderGenerator.h>

Inheritance diagram for ShaderGenerator:

Public Member Functions
virtual	~ShaderGenerator ()
	Destructor. More...

virtual const string &	getTarget () const =0
	Return the name of the target this generator is for. More...

virtual ShaderPtr	generate (const string &name, ElementPtr element, GenContext &context) const =0

virtual void	emitScopeBegin (ShaderStage &stage, Syntax::Punctuation punc=Syntax::CURLY_BRACKETS) const
	Start a new scope using the given bracket type. More...

virtual void	emitScopeEnd (ShaderStage &stage, bool semicolon=false, bool newline=true) const
	End the current scope. More...

virtual void	emitLineBegin (ShaderStage &stage) const
	Start a new line. More...

virtual void	emitLineEnd (ShaderStage &stage, bool semicolon=true) const
	End the current line. More...

virtual void	emitLineBreak (ShaderStage &stage) const
	Add a line break. More...

virtual void	emitString (const string &str, ShaderStage &stage) const
	Add a string. More...

virtual void	emitLine (const string &str, ShaderStage &stage, bool semicolon=true) const
	Add a single line of code, optionally appending a semicolon. More...

virtual void	emitComment (const string &str, ShaderStage &stage) const
	Add a single line code comment. More...

virtual void	emitBlock (const string &str, GenContext &context, ShaderStage &stage) const
	Add a block of code. More...

virtual void	emitInclude (const string &file, GenContext &context, ShaderStage &stage) const

template<typename T >
void	emitValue (const T &value, ShaderStage &stage) const
	Add a value. More...

virtual void	emitFunctionDefinition (const ShaderNode &node, GenContext &context, ShaderStage &stage) const
	Add the function definition for a single node. More...

virtual void	emitFunctionDefinitions (const ShaderGraph &graph, GenContext &context, ShaderStage &stage) const
	Add all function definitions for a graph. More...

virtual void	emitFunctionCall (const ShaderNode &node, GenContext &context, ShaderStage &stage, bool checkScope=true) const
	Add the function call for a single node. More...

virtual void	emitFunctionCalls (const ShaderGraph &graph, GenContext &context, ShaderStage &stage, uint32_t classification=0u) const

virtual void	emitDependentFunctionCalls (const ShaderNode &node, GenContext &context, ShaderStage &stage, uint32_t classification=0u) const

virtual void	emitFunctionBodyBegin (const ShaderNode &node, GenContext &context, ShaderStage &stage, Syntax::Punctuation punc=Syntax::CURLY_BRACKETS) const
	Emit code for starting a new function body. More...

virtual void	emitFunctionBodyEnd (const ShaderNode &node, GenContext &context, ShaderStage &stage) const
	Emit code for ending a function body. More...

virtual void	emitTypeDefinitions (GenContext &context, ShaderStage &stage) const
	Emit type definitions for all data types that needs it. More...

virtual void	emitInput (const ShaderInput *input, GenContext &context, ShaderStage &stage) const

virtual void	emitOutput (const ShaderOutput *output, bool includeType, bool assignValue, GenContext &context, ShaderStage &stage) const

virtual void	emitVariableDeclarations (const VariableBlock &block, const string &qualifier, const string &separator, GenContext &context, ShaderStage &stage, bool assignValue=true) const

virtual void	emitVariableDeclaration (const ShaderPort *variable, const string &qualifier, GenContext &context, ShaderStage &stage, bool assignValue=true) const

virtual void	getClosureContexts (const ShaderNode &node, vector< ClosureContext * > &cct) const
	Return the closure contexts defined for the given node. More...

virtual string	getUpstreamResult (const ShaderInput *input, GenContext &context) const
	Return the result of an upstream connection or value for an input. More...

const Syntax &	getSyntax () const
	Return the syntax object for the language used by the code generator. More...

void	registerImplementation (const string &name, CreatorFunction< ShaderNodeImpl > creator)
	Register a shader node implementation for a given implementation element name. More...

bool	implementationRegistered (const string &name) const
	Determine if a shader node implementation has been registered for a given implementation element name. More...

virtual ShaderNodeImplPtr	getImplementation (const NodeDef &nodedef, GenContext &context) const
	Return a registered shader node implementation for the given nodedef. More...

void	setColorManagementSystem (ColorManagementSystemPtr colorManagementSystem)
	Sets the color management system. More...

ColorManagementSystemPtr	getColorManagementSystem () const
	Returns the color management system. More...

void	setUnitSystem (UnitSystemPtr unitSystem)
	Sets the unit system. More...

UnitSystemPtr	getUnitSystem () const
	Returns the unit system. More...

const StringMap &	getTokenSubstitutions () const
	Return the map of token substitutions used by the generator. More...

virtual void	registerShaderMetadata (const DocumentPtr &doc, GenContext &context) const

Protected Member Functions
	ShaderGenerator (SyntaxPtr syntax)
	Protected constructor. More...

virtual ShaderStagePtr	createStage (const string &name, Shader &shader) const
	Create a new stage in a shader. More...

void	setFunctionName (const string &functionName, ShaderStage &stage) const
	Set function name for a stage. More...

void	replaceTokens (const StringMap &substitutions, ShaderStage &stage) const
	Replace tokens with identifiers according to the given substitutions map. More...

Protected Attributes
SyntaxPtr	_syntax

Factory< ShaderNodeImpl >	_implFactory

ColorManagementSystemPtr	_colorManagementSystem

UnitSystemPtr	_unitSystem

StringMap	_tokenSubstitutions

friend	ShaderGraph

Static Protected Attributes
static const string	T_FILE_TRANSFORM_UV

Detailed Description

Base class for shader generators All third-party shader generators should derive from this class. Derived classes should use DECLARE_SHADER_GENERATOR / DEFINE_SHADER_GENERATOR in their declaration / definition, and register with the Registry class.

Definition at line 28 of file ShaderGenerator.h.

Constructor & Destructor Documentation

virtual ShaderGenerator::~ShaderGenerator ( )

inlinevirtual

Destructor.

Definition at line 32 of file ShaderGenerator.h.

ShaderGenerator::ShaderGenerator ( SyntaxPtr syntax )

protected

Protected constructor.

Member Function Documentation

virtual ShaderStagePtr ShaderGenerator::createStage	(	const string &	name,
		Shader &	shader
	)		const

protectedvirtual

Create a new stage in a shader.

virtual void ShaderGenerator::emitBlock	(	const string &	str,
		GenContext &	context,
		ShaderStage &	stage
	)		const

virtual

Add a block of code.

virtual void ShaderGenerator::emitComment	(	const string &	str,
		ShaderStage &	stage
	)		const

virtual

Add a single line code comment.

virtual void ShaderGenerator::emitDependentFunctionCalls	(	const ShaderNode &	node,
		GenContext &	context,
		ShaderStage &	stage,
		uint32_t	classification = `0u`
	)		const

virtual

Add function calls for nodes connected directly upstream from the given node. If a classification mask is given only functions for nodes matching this classification will be emitted.

virtual void ShaderGenerator::emitFunctionBodyBegin	(	const ShaderNode &	node,
		GenContext &	context,
		ShaderStage &	stage,
		Syntax::Punctuation	punc = `Syntax::CURLY_BRACKETS`
	)		const

virtual

Emit code for starting a new function body.

Reimplemented in OslShaderGenerator.

virtual void ShaderGenerator::emitFunctionBodyEnd	(	const ShaderNode &	node,
		GenContext &	context,
		ShaderStage &	stage
	)		const

virtual

Emit code for ending a function body.

virtual void ShaderGenerator::emitFunctionCall	(	const ShaderNode &	node,
		GenContext &	context,
		ShaderStage &	stage,
		bool	checkScope = `true`
	)		const

virtual

Add the function call for a single node.

Reimplemented in HwShaderGenerator.

virtual void ShaderGenerator::emitFunctionCalls	(	const ShaderGraph &	graph,
		GenContext &	context,
		ShaderStage &	stage,
		uint32_t	classification = `0u`
	)		const

virtual

Add all function calls for a graph. If a classification mask is given only functions for nodes matching this classification will be emitted.

Reimplemented in OslShaderGenerator.

virtual void ShaderGenerator::emitFunctionDefinition	(	const ShaderNode &	node,
		GenContext &	context,
		ShaderStage &	stage
	)		const

virtual

Add the function definition for a single node.

virtual void ShaderGenerator::emitFunctionDefinitions	(	const ShaderGraph &	graph,
		GenContext &	context,
		ShaderStage &	stage
	)		const

virtual

Add all function definitions for a graph.

virtual void ShaderGenerator::emitInclude	(	const string &	file,
		GenContext &	context,
		ShaderStage &	stage
	)		const

virtual

Add the contents of an include file. Making sure it is only included once for the shader stage.

virtual void ShaderGenerator::emitInput	(	const ShaderInput *	input,
		GenContext &	context,
		ShaderStage &	stage
	)		const

virtual

Emit the connected variable name for an input, or constant value if the port is not connected

virtual void ShaderGenerator::emitLine	(	const string &	str,
		ShaderStage &	stage,
		bool	semicolon = `true`
	)		const

virtual

Add a single line of code, optionally appending a semicolon.

virtual void ShaderGenerator::emitLineBegin ( ShaderStage & stage ) const

virtual

Start a new line.

virtual void ShaderGenerator::emitLineBreak ( ShaderStage & stage ) const

virtual

Add a line break.

virtual void ShaderGenerator::emitLineEnd	(	ShaderStage &	stage,
		bool	semicolon = `true`
	)		const

virtual

End the current line.

virtual void ShaderGenerator::emitOutput	(	const ShaderOutput *	output,
		bool	includeType,
		bool	assignValue,
		GenContext &	context,
		ShaderStage &	stage
	)		const

virtual

Emit the output variable name for an output, optionally including it's type and default value assignment.

virtual void ShaderGenerator::emitScopeBegin	(	ShaderStage &	stage,
		Syntax::Punctuation	punc = `Syntax::CURLY_BRACKETS`
	)		const

virtual

Start a new scope using the given bracket type.

virtual void ShaderGenerator::emitScopeEnd	(	ShaderStage &	stage,
		bool	semicolon = `false`,
		bool	newline = `true`
	)		const

virtual

End the current scope.

virtual void ShaderGenerator::emitString	(	const string &	str,
		ShaderStage &	stage
	)		const

virtual

Add a string.

virtual void ShaderGenerator::emitTypeDefinitions	(	GenContext &	context,
		ShaderStage &	stage
	)		const

virtual

Emit type definitions for all data types that needs it.

template<typename T >

void ShaderGenerator::emitValue	(	const T &	value,
		ShaderStage &	stage
	)		const

inline

Add a value.

Definition at line 74 of file ShaderGenerator.h.

virtual void ShaderGenerator::emitVariableDeclaration	(	const ShaderPort *	variable,
		const string &	qualifier,
		GenContext &	context,
		ShaderStage &	stage,
		bool	assignValue = `true`
	)		const

virtual

Emit definition of a single shader variable.

Parameters

variable	Shader port representing the variable.
qualifier	Optional qualifier to add before the variable declaration.
context	Context for generation.
stage	The stage to emit code into.
assignValue	If true the variable is initialized with its value.

Reimplemented in GlslShaderGenerator.

virtual void ShaderGenerator::emitVariableDeclarations	(	const VariableBlock &	block,
		const string &	qualifier,
		const string &	separator,
		GenContext &	context,
		ShaderStage &	stage,
		bool	assignValue = `true`
	)		const

virtual

Emit definitions for all shader variables in a block.

Parameters

block	Block to emit.
qualifier	Optional qualifier to add before the variable declaration.
separator	Separator to use between the declarations.
context	Context for generation.
stage	The stage to emit code into.
assignValue	If true the variables are initialized with their value.

virtual ShaderPtr ShaderGenerator::generate	(	const string &	name,
		ElementPtr	element,
		GenContext &	context
	)		const

pure virtual

Generate a shader starting from the given element, translating the element and all dependencies upstream into shader code.

Implemented in MdlShaderGenerator, OslShaderGenerator, and GlslShaderGenerator.

virtual void ShaderGenerator::getClosureContexts	(	const ShaderNode &	node,
		vector< ClosureContext * > &	cct
	)		const

virtual

Return the closure contexts defined for the given node.

Reimplemented in HwShaderGenerator.

ColorManagementSystemPtr ShaderGenerator::getColorManagementSystem ( ) const

inline

Returns the color management system.

Definition at line 158 of file ShaderGenerator.h.

virtual ShaderNodeImplPtr ShaderGenerator::getImplementation	(	const NodeDef &	nodedef,
		GenContext &	context
	)		const

virtual

Return a registered shader node implementation for the given nodedef.

Reimplemented in GlslShaderGenerator, and MdlShaderGenerator.

const Syntax& ShaderGenerator::getSyntax ( ) const

inline

Return the syntax object for the language used by the code generator.

Definition at line 140 of file ShaderGenerator.h.

virtual const string& ShaderGenerator::getTarget ( ) const

pure virtual

Return the name of the target this generator is for.

Implemented in GlslShaderGenerator, MdlShaderGenerator, OslShaderGenerator, and EsslShaderGenerator.

const StringMap& ShaderGenerator::getTokenSubstitutions ( ) const

inline

Return the map of token substitutions used by the generator.

Definition at line 176 of file ShaderGenerator.h.

UnitSystemPtr ShaderGenerator::getUnitSystem ( ) const

inline

Returns the unit system.

Definition at line 170 of file ShaderGenerator.h.

virtual string ShaderGenerator::getUpstreamResult	(	const ShaderInput *	input,
		GenContext &	context
	)		const

virtual

Return the result of an upstream connection or value for an input.

Reimplemented in MdlShaderGenerator.

bool ShaderGenerator::implementationRegistered ( const string & name ) const

Determine if a shader node implementation has been registered for a given implementation element name.

void ShaderGenerator::registerImplementation	(	const string &	name,
		CreatorFunction< ShaderNodeImpl >	creator
	)

Register a shader node implementation for a given implementation element name.

virtual void ShaderGenerator::registerShaderMetadata	(	const DocumentPtr &	doc,
		GenContext &	context
	)		const

virtual

Register metadata that should be exported to the generated shaders. Supported metadata includes standard UI attributes like "uiname", "uifolder", "uimin", "uimax", etc. But it is also extendable by defining custom attributes using AttributeDefs. Any AttributeDef in the given document with exportable="true" will be exported as shader metadata when found on nodes during shader generation. Derived shader generators may override this method to change the registration. Applications must explicitly call this method before shader generation to enable export of metadata.

Reimplemented in OslShaderGenerator.

void ShaderGenerator::replaceTokens	(	const StringMap &	substitutions,
		ShaderStage &	stage
	)		const

protected

Replace tokens with identifiers according to the given substitutions map.

void ShaderGenerator::setColorManagementSystem ( ColorManagementSystemPtr colorManagementSystem )

inline

Sets the color management system.

Definition at line 152 of file ShaderGenerator.h.

void ShaderGenerator::setFunctionName	(	const string &	functionName,
		ShaderStage &	stage
	)		const

inlineprotected

Set function name for a stage.

Definition at line 200 of file ShaderGenerator.h.

void ShaderGenerator::setUnitSystem ( UnitSystemPtr unitSystem )

inline

Sets the unit system.

Definition at line 164 of file ShaderGenerator.h.

Member Data Documentation

ColorManagementSystemPtr ShaderGenerator::_colorManagementSystem

protected

Definition at line 213 of file ShaderGenerator.h.

Factory<ShaderNodeImpl> ShaderGenerator::_implFactory

protected

Definition at line 212 of file ShaderGenerator.h.

SyntaxPtr ShaderGenerator::_syntax

protected

Definition at line 211 of file ShaderGenerator.h.

StringMap ShaderGenerator::_tokenSubstitutions

mutableprotected

Definition at line 215 of file ShaderGenerator.h.

UnitSystemPtr ShaderGenerator::_unitSystem

protected

Definition at line 214 of file ShaderGenerator.h.

friend ShaderGenerator::ShaderGraph

protected

Definition at line 217 of file ShaderGenerator.h.

const string ShaderGenerator::T_FILE_TRANSFORM_UV

staticprotected

Definition at line 209 of file ShaderGenerator.h.

The documentation for this class was generated from the following file:

MaterialXGenShader/ShaderGenerator.h

Public Member Functions

Protected Member Functions

Protected Attributes

Static Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation