ShaderNodeImpl Class Reference

#include <ShaderNodeImpl.h>

Inheritance diagram for ShaderNodeImpl:

Public Member Functions
virtual	~ShaderNodeImpl ()
virtual void	initialize (const InterfaceElement &element, GenContext &context)
const string &	getName () const
	Return the name of this implementation. More...
size_t	getHash () const
virtual void	addInputs (ShaderNode &node, GenContext &context) const
	Add additional inputs on a node. More...
virtual void	setValues (const Node &node, ShaderNode &shaderNode, GenContext &context) const
	Set values for additional inputs on a node. More...
virtual void	addClassification (ShaderNode &node) const
	Add additional classifications on a node. More...
virtual void	createVariables (const ShaderNode &node, GenContext &context, Shader &shader) const
virtual void	emitFunctionDefinition (const ShaderNode &node, GenContext &context, ShaderStage &stage) const
	Emit function definition for the given node instance. More...
virtual void	emitFunctionCall (const ShaderNode &node, GenContext &context, ShaderStage &stage) const
	Emit the function call or inline source code for given node instance in the given context. More...
virtual void	emitOutputVariables (const ShaderNode &node, GenContext &context, ShaderStage &stage) const
	Emit declaration and initialization of output variables to use in a function call. More...
virtual ShaderGraph *	getGraph () const
virtual bool	isEditable (const ShaderInput &) const
virtual bool	isEditable (const ShaderGraphInputSocket &) const

Protected Member Functions
	ShaderNodeImpl ()
	Protected constructor. More...
bool	nodeOutputIsClosure (const ShaderNode &node) const

Protected Attributes
string	_name
size_t	_hash

Detailed Description

Class handling the shader generation implementation for a node. Responsible for emitting the function definition and function call that is the node implementation.

Definition at line 31 of file ShaderNodeImpl.h.

Constructor & Destructor Documentation

virtual ShaderNodeImpl::~ShaderNodeImpl ( )

inlinevirtual

Definition at line 34 of file ShaderNodeImpl.h.

ShaderNodeImpl::ShaderNodeImpl ( )

protected

Protected constructor.

Member Function Documentation

virtual void ShaderNodeImpl::addClassification ( ShaderNode &  node ) const

virtual

Add additional classifications on a node.

Reimplemented in CompoundNode, HwMaterialCompoundNode, MaterialNode, and ClosureCompoundNodeMdl.

virtual void ShaderNodeImpl::addInputs ( ShaderNode &  node, GenContext &  context  ) const

virtual

Add additional inputs on a node.

Reimplemented in LayerableNodeMdl, ImageNodeMdl, and HwImageNode.

virtual void ShaderNodeImpl::createVariables ( const ShaderNode &  node, GenContext &  context, Shader &  shader  ) const

virtual

Create shader variables needed for the implementation of this node (e.g. uniforms, inputs and outputs). Used if the node requires input data from the application.

Reimplemented in HwGeomPropValueNodeAsUniform, HwLightShaderNode, CompoundNode, HwLightCompoundNode, HwLightNode, HwNumLightsNode, HwSurfaceNode, HwTexCoordNode, HwTransformNode, ConvolutionNode, HwBitangentNode, HwFrameNode, HwGeomColorNode, HwGeomPropValueNode, HwNormalNode, HwPositionNode, HwTangentNode, HwTimeNode, and HwViewDirectionNode.

virtual void ShaderNodeImpl::emitFunctionCall ( const ShaderNode &  node, GenContext &  context, ShaderStage &  stage  ) const

virtual

Emit the function call or inline source code for given node instance in the given context.

Reimplemented in ClosureLayerNodeMdl, CompoundNodeMdl, HwGeomPropValueNodeAsUniform, CompoundNode, HwLightCompoundNode, HwLightShaderNode, ImageNodeMdl, SourceCodeNode, SourceCodeNodeMdl, HwLightNode, HwSurfaceNode, HwTexCoordNode, ClosureCompoundNodeMdl, MaterialNode, HwBitangentNode, HwFrameNode, HwGeomColorNode, HwGeomPropValueNode, HwNormalNode, HwPositionNode, HwTangentNode, HwTimeNode, HwTransformNode, HwViewDirectionNode, HeightToNormalNodeMdl, MaterialNodeMdl, and SurfaceNodeMdl.

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

virtual

Emit function definition for the given node instance.

Reimplemented in CompoundNodeMdl, CompoundNode, HwLightCompoundNode, SourceCodeNode, SourceCodeNodeMdl, HwNumLightsNode, CustomCodeNodeMdl, HwLightSamplerNode, and ClosureCompoundNodeMdl.

virtual void ShaderNodeImpl::emitOutputVariables ( const ShaderNode &  node, GenContext &  context, ShaderStage &  stage  ) const

virtual

Emit declaration and initialization of output variables to use in a function call.

virtual ShaderGraph* ShaderNodeImpl::getGraph ( ) const

virtual

Return a pointer to the graph if this implementation is using a graph, or returns nullptr otherwise.

Reimplemented in CompoundNode.

size_t ShaderNodeImpl::getHash ( ) const

inline

Return a hash for this implementation. The hash should correspond to the function signature generated for the node, and can be used to compare implementations, e.g. to query if an identical function has already been emitted during shader generation.

Definition at line 51 of file ShaderNodeImpl.h.

const string& ShaderNodeImpl::getName ( ) const

inline

Return the name of this implementation.

Definition at line 42 of file ShaderNodeImpl.h.

virtual void ShaderNodeImpl::initialize ( const InterfaceElement &  element, GenContext &  context  )

virtual

Initialize with the given implementation element. Initialization must set the name and hash for the implementation, as well as any other data needed to emit code for the node.

Reimplemented in CompoundNodeMdl, HwLightShaderNode, SourceCodeNode, HwLightCompoundNode, SourceCodeNodeMdl, CompoundNode, CustomCodeNodeMdl, HwMaterialCompoundNode, and OsoNode.

virtual bool ShaderNodeImpl::isEditable ( const ShaderInput &  ) const

inlinevirtual

Returns true if an input is editable by users. Editable inputs are allowed to be published as shader uniforms and hence must be presentable in a user interface. By default all inputs are considered to be editable.

Reimplemented in LayerableNodeMdl, ImageNodeMdl, HwImplementation, and HwGeomPropValueNode.

Definition at line 86 of file ShaderNodeImpl.h.

virtual bool ShaderNodeImpl::isEditable ( const ShaderGraphInputSocket &  ) const

inlinevirtual

Returns true if a graph input is accessible by users. Accessible inputs are allowed to be published as shader uniforms and hence must be presentable in a user interface. By default all graph inputs are considered to be accessible.

Definition at line 95 of file ShaderNodeImpl.h.

bool ShaderNodeImpl::nodeOutputIsClosure ( const ShaderNode &  node ) const

protected

Returns true if the first output of the node is a closure This is used by SourceCodeNode and CompoundNode to generate the appropriate shader code.

virtual void ShaderNodeImpl::setValues ( const Node &  node, ShaderNode &  shaderNode, GenContext &  context  ) const

virtual

Set values for additional inputs on a node.

Reimplemented in HwImageNode.

Member Data Documentation

size_t ShaderNodeImpl::_hash

protected

Definition at line 111 of file ShaderNodeImpl.h.

string ShaderNodeImpl::_name

protected

Definition at line 110 of file ShaderNodeImpl.h.

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

• MaterialXGenShader/ShaderNodeImpl.h