ClosureContext Class Reference

Class representing a context for closure evaluation. More...

#include <GenContext.h>

Public Types
using	Argument = std::pair< const TypeDesc *, string >
	An extra argument for closure functions. More...
using	Arguments = vector< Argument >
	An array of arguments.
using	ClosureParams = std::unordered_map< string, const ShaderInput * >
	Extra parameters for closure evaluation.

Public Member Functions
	ClosureContext (int type=0)
	Constructor.
int	getType () const
	Return the identifier for this context.
void	addArgument (const TypeDesc *nodeType, const Argument &arg)
	For the given node type add an extra argument to be used for the function in this context.
const Arguments &	getArguments (const TypeDesc *nodeType) const
	Return a list of extra argument to be used for the given node in this context.
void	setSuffix (const TypeDesc *nodeType, const string &suffix)
	For the given node type set a function name suffix to be used for the function in this context.
const string &	getSuffix (const TypeDesc *nodeType) const
	Return the function name suffix to be used for the given node in this context.
void	setClosureParams (const ShaderNode *closure, const ClosureParams *params)
	Set extra parameters to use for evaluating a closure.
const ClosureParams *	getClosureParams (const ShaderNode *closure) const
	Return extra parameters to use for evaluating a closure. More...

Protected Attributes
const int	_type
std::unordered_map< const TypeDesc *, Arguments >	_arguments
std::unordered_map< const TypeDesc *, string >	_suffix
std::unordered_map< const ShaderNode *, const ClosureParams * >	_params

Static Protected Attributes
static const Arguments	EMPTY_ARGUMENTS

Detailed Description

Class representing a context for closure evaluation.

On hardware BSDF closures are evaluated differently in reflection, transmission or environment/indirect contexts. This class represents the context we are in and if extra arguments and function decorators are needed for that context.

Member Typedef Documentation

Argument

using Argument = std::pair<const TypeDesc*, string>

An extra argument for closure functions.

An argument is a pair of strings holding the 'type' and 'name' of the argument.

Member Function Documentation

getClosureParams()

const ClosureParams * getClosureParams ( const ShaderNode *  closure ) const

inline

Return extra parameters to use for evaluating a closure.

Or return nullptr if no parameters have been set for the given closure.

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

• source/MaterialXGenShader/GenContext.h
• source/MaterialXGenShader/HwShaderGenerator.cpp