The ShaderCombiner node combines the output of several fragment shaders in different ways to produce a final value by a combination of the output values of the shaders. More...

#include <H3D/ShaderCombiner.h>

Inheritance diagram for H3D::ShaderCombiner:

Public Member Functions
	ShaderCombiner (Inst< DisplayList > _displayList=0, Inst< SFNode > _metadata=0, Inst< SFBool > _isSelected=0, Inst< SFBool > _isValid=0, Inst< SFBool > _activate=0, Inst< SFString > _language=0, Inst< MFShaderPart > _parts=0, Inst< SFBool > _suppressUniformWarnings=0, Inst< MFString > _fragmentShaderString=0, Inst< MFString > _vertexShaderString=0, Inst< MFGeneratedFragmentShaderNode > _shaders=0, Inst< SFString > _function=0, Inst< SFString > _arg0Modifier=0, Inst< SFString > _arg1Modifier=0, Inst< SFFloat > _value=0, Inst< SFFloat > _arg0Value=0, Inst< SFFloat > _arg1Value=0, Inst< SFString > _alphaFunction=0, Inst< SFString > _alphaArg0Modifier=0, Inst< SFString > _alphaArg1Modifier=0, Inst< SFFloat > _alphaValue=0, Inst< SFFloat > _alphaArg0Value=0, Inst< SFFloat > _alphaArg1Value=0)
	Constructor.

virtual void	traverseSG (TraverseInfo &ti)
	Traverse the scene-graph.

Public Member Functions inherited from H3D::H3DGeneratedFragmentShaderNode
	H3DGeneratedFragmentShaderNode (Inst< DisplayList > _displayList=0, Inst< SFNode > _metadata=0, Inst< SFBool > _isSelected=0, Inst< SFBool > _isValid=0, Inst< SFBool > _activate=0, Inst< SFString > _language=0, Inst< MFShaderPart > _parts=0, Inst< SFBool > _suppressUniformWarnings=0, Inst< MFString > _fragmentShaderString=0, Inst< MFString > _vertexShaderString=0)
	Constructor.

Public Member Functions inherited from H3D::H3DGeneratedShaderNode
	H3DGeneratedShaderNode (Inst< DisplayList > _displayList=0, Inst< SFNode > _metadata=0, Inst< SFBool > _isSelected=0, Inst< SFBool > _isValid=0, Inst< SFBool > _activate=0, Inst< SFString > _language=0, Inst< MFShaderPart > _parts=0, Inst< SFBool > _suppressUniformWarnings=0, Inst< MFString > _fragmentShaderString=0, Inst< MFString > _vertexShaderString=0)
	Constructor.

virtual void	buildShader ()
	Rebuilds the generated shader, causing a full rebuild and relink of the shader.

virtual void	preRender ()
	The preRender method is extended to make sure that the shader is up to date before rendering.

virtual string	getFinalFragmentShaderOutputString ()
	Returns the string that is the last thing that is done in the fragment shader. More...

virtual string	uniqueShaderName (const string &base_name)
	The uniqueShaderName function is used to generate a name unique for this instance of the shader generator node class. More...

virtual string	getFragmentShaderHeader ()
	Return a string that is placed at the beginning of a fragment shader to specify minimum required version of the shader as well as enabled extensions.

virtual string	getVertexShaderHeader ()
	Return a string that is placed at the beginning of a vertex shader to specify minimum required version of the shader as well as enabled extensions.

Public Member Functions inherited from H3D::ComposedShader
	ComposedShader (Inst< DisplayList > _displayList=0, Inst< SFNode > _metadata=0, Inst< SFBool > _isSelected=0, Inst< SFBool > _isValid=0, Inst< SFBool > _activate=0, Inst< SFString > _language=0, Inst< MFShaderPart > _parts=0, Inst< SFBool > _suppressUniformWarnings=0, Inst< SFString > _geometryInputType=0, Inst< SFString > _geometryOutputType=0, Inst< SFInt32 > _geometryVerticesOut=0, Inst< SFString > _transparencyDetectMode=0, Inst< MFString > _transformFeedbackVaryings=0, Inst< SFBool > _printShaderWarnings=0, Inst< SFShaderConstants > _shaderConstants=0)
	Constructor.

virtual	~ComposedShader ()
	Destructor.

virtual bool	addField (const string &_name, const Field::AccessType &access, Field *field)
	The addField method is specialized to add a route from the field added to the displayList field.

virtual bool	removeField (const string &_name)
	The removeField method is specialized to remove the route from the field to the displayList field.

virtual void	render ()
	Sets up the shader program and sets uniform variable values.

virtual void	postRender ()
	Disables the shader program.

virtual GLbitfield	getAffectedGLAttribs ()
	Returns a bitmask of the OpenGL attrib bits that will be affected by this node. More...

virtual bool	isTransparent (X3DMaterialNode *material)
	Returns a hint if the X3DShaderNode produces an alpha channel that is < 1, i.e. More...

GLhandleARB	getProgramHandle ()
	Returns the OpenGL shader program handle used by the ComposedShader.

Public Member Functions inherited from H3D::X3DShaderNode
	X3DShaderNode (Inst< DisplayList > _displayList=0, Inst< SFNode > _metadata=0, Inst< SFBool > _isSelected=0, Inst< SFBool > _isValid=0, Inst< SFBool > _activate=0, Inst< SFString > _language=0)
	Constructor.

virtual bool	isSupported ()
	Returns true if the shader node type is supported by the browser. More...

void	setSelected (bool selected)
	Set the isSelected field.

virtual string	defaultXMLContainerField ()
	Returns the default xml containerField attribute value. More...

Public Member Functions inherited from H3D::X3DAppearanceChildNode
	X3DAppearanceChildNode (Inst< DisplayList > _displayList=0, Inst< SFNode > _metadata=0)
	Constructor.

Public Member Functions inherited from H3D::X3DNode
	X3DNode (Inst< SFNode > _metadata=0)
	Constructor.

X3DMetadataObject *	getMetadataByName (const string &_name)
	Given a name, the first X3DMetadataObject in the metadata field that matches that name is returned. More...

Public Member Functions inherited from H3D::Node
	Node ()
	Constructor.

virtual Node *	clone (bool deepCopy=true, DeepCopyMap *deepCopyMap=NULL)
	Returns a new instance of this node type with the same state as this one. More...

virtual	~Node ()
	Destructor.

X3DPrototypeInstance *	getProtoInstanceParent ()
	If this node is the root node in the proto body of a X3DPrototypeInstance then this will return that node. More...

void	setProtoInstanceParent (X3DPrototypeInstance *p)
	Set the X3DPrototypeInstance this node is the the root node if applicaple.

virtual bool	lineIntersect (const Vec3f &from, const Vec3f &to, LineIntersectResult &result)
	Detect intersection between a line segment and the Node. More...

virtual void	closestPoint (const Vec3f &p, NodeIntersectResult &result)
	Find closest point on Node to p. More...

virtual bool	movingSphereIntersect (H3DFloat radius, const Vec3f &from, const Vec3f &to, NodeIntersectResult &result)
	Detect collision between a moving sphere and the Node. More...

virtual Field *	getField (const string &_name) const
	return a pointer to the field specified by name within this instance

int	addDestructCallback (void(func)(Node , void ), void args)
	Add a callback function to be run on destruction of node. More...

int	removeDestructCallback (void(func)(Node , void ), void args)
	Add a callback function to be run on destruction of node. More...

Public Member Functions inherited from H3D::H3DDisplayListObject
	H3DDisplayListObject (Inst< DisplayList > _displayList=0)
	Constructor.

Public Member Functions inherited from H3D::X3DProgrammableShaderObject
	X3DProgrammableShaderObject (H3DNodeDatabase *_database)
	Constructor.

virtual void	clearFields ()
	Remove all dynamic fields that have been previously added.

virtual	~X3DProgrammableShaderObject ()
	Destructor.

Public Member Functions inherited from H3D::H3DDynamicFieldsObject
field_iterator	firstField ()
	Get an iterator to the first of the dynamic fields.

field_iterator	endField ()
	Get an iterator pointing to the end of the dynamic fields.

	H3DDynamicFieldsObject ()
	Constructor.

Public Attributes
H3DUniquePtr< MFGeneratedFragmentShaderNode >	shaders
	The shaders field specifies a number of H3DGeneratedFragmentShaderNode instances that are to be combined. More...

H3DUniquePtr< SFString >	function
	The function field specifies the combine function to use for RGB values. More...

H3DUniquePtr< SFString >	arg0Modifier
	arg0Modifyier field specifies a modifier function that can be applied to the RGB output of the shader before being combined. More...

H3DUniquePtr< SFString >	arg1Modifier
	arg1Modifyier field specifies a modifier function that can be applied to the RGB output of the shader before being combined. More...

H3DUniquePtr< SFFloat >	value
	The value field specifies a value that is used together with some of the combiner functions, e.g. More...

H3DUniquePtr< SFFloat >	arg0Value
	The arg0Value field specifies a value that is used together with some of the arg0Modifier functions. More...

H3DUniquePtr< SFFloat >	arg1Value
	The arg0Value field specifies a value that is used together with some of the arg0Modifier functions. More...

H3DUniquePtr< SFString >	alphaFunction
	The function field specifies the combine function to use for alpha values. More...

H3DUniquePtr< SFString >	alphaArg0Modifier
	alphaArg0Modifyier field specifies a modifier function that can be applied to the alpha output of the shader before being combined. More...

H3DUniquePtr< SFString >	alphaArg1Modifier
	alphaArg1Modifyier field specifies a modifier function that can be applied to the alpha output of the shader before being combined. More...

H3DUniquePtr< SFFloat >	alphaValue
	The alphavalue field specifies a value that is used together with some of the alpha combiner functions, e.g. More...

H3DUniquePtr< SFFloat >	alphaArg0Value
	The alphaArg0Value field specifies a value that is used together with some of the alphaArg0Modifier functions. More...

H3DUniquePtr< SFFloat >	alphaArg1Value
	The alphaArg1Value field specifies a value that is used together with some of the alphaArg1Modifier functions. More...

Public Attributes inherited from H3D::H3DGeneratedShaderNode
H3DUniquePtr< MFString >	fragmentShaderString
	Contains the generated fragment shader code. More...

H3DUniquePtr< MFString >	vertexShaderString
	Contains the generated vertex shader code. More...

H3DUniquePtr< RebuildShader >	rebuildShader
	Field used to update the shader code when an event is received. More...

Public Attributes inherited from H3D::ComposedShader
H3DUniquePtr< SFShaderConstants >	shaderConstants
	The shaderConstants field can contain a ShaderConstants node defining constants that can be used by all ShaderPart instances in the ComposedShader node. More...

H3DUniquePtr< MFShaderPart >	parts
	The shader parts to use in the ComposedShader. More...

H3DUniquePtr< SFBool >	suppressUniformWarnings
	Suppress the warnings printed to the console about setting uniform fields that do not exist in the shader. More...

H3DUniquePtr< SFString >	geometryInputType
	The input geometry type of the geometry being rendered with a geometry shader. More...

H3DUniquePtr< SFString >	geometryOutputType
	The output geometry type of the geometry being rendered with a geometry shader. More...

H3DUniquePtr< SFInt32 >	geometryVerticesOut
	The number of vertices the geometry shader generates. More...

H3DUniquePtr< SFString >	transparencyDetectMode
	Determines how the render system will determine if the shader used generates any fragment that has an alpha channel that is < 1, i.e. More...

H3DUniquePtr< MFString >	transformFeedbackVaryings
	List of varying names to capture during transform feedback. More...

H3DUniquePtr< SFBool >	printShaderWarnings
	Always print shader warnings to console. More...

Public Attributes inherited from H3D::X3DShaderNode
H3DUniquePtr< SFBool >	isSelected
	The isSelected output field is used to indicate that this shader instance is the one selected for use by the browser. More...

H3DUniquePtr< SFBool >	isValid
	The isValid field is used to indicate whether the current shader objects can be run as a shader program. More...

H3DUniquePtr< SFBool >	activate
	The activate field forces the shader to activate the contained objects. More...

H3DUniquePtr< EventCollectingField< Field > >	activateMonitor
	field used to monitor if activate field is modified

H3DUniquePtr< SFString >	language
	The language field is used to indicate to the browser which shading language is used for the source file(s). More...

Public Attributes inherited from H3D::X3DNode
H3DUniquePtr< SFNode >	metadata
	Meta data about the node. More...

Public Attributes inherited from H3D::H3DDisplayListObject
H3DUniquePtr< DisplayList >	displayList
	The DisplayList instance handling the OpenGL caching of this object.

Static Public Attributes
static H3DNodeDatabase	database
	The H3DNodeDatabase for this node.

Static Public Attributes inherited from H3D::H3DGeneratedFragmentShaderNode
static H3DNodeDatabase	database
	The H3DNodeDatabase for this node.

Static Public Attributes inherited from H3D::H3DGeneratedShaderNode
static H3DNodeDatabase	database
	The H3DNodeDatabase for this node.

Static Public Attributes inherited from H3D::ComposedShader
static H3DNodeDatabase	database
	The H3DNodeDatabase for this node.

Static Public Attributes inherited from H3D::X3DShaderNode
static H3DNodeDatabase	database
	The H3DNodeDatabase for this node.

Static Public Attributes inherited from H3D::X3DNode
static H3DNodeDatabase	database
	The H3DNodeDatabase for this node.

Static Public Attributes inherited from H3D::X3DProgrammableShaderObject
static bool	use_bindless_textures = false
	True if we should use bindless textures.

Protected Member Functions
virtual string	addUniformFields (ComposedShader *)
	Adds uniform fields to the shader. More...

virtual string	getFunctionShaderString ()
	Get a string with GLSL function definitions to be used by the generated shader.

virtual void	getVaryingVariables (vector< VaryingVariable > &variables)
	Get the varying variables used by the shader generator.

virtual void	getAttributes (vector< Attribute > &attributes)
	Get the attribues used by the shader generator.

virtual string	getVertexShaderString ()
	Returns the shader code for the fragment shader.

virtual string	getFragmentShaderString ()
	Returns the shader code for the fragment shader.

string	applyModifier (const string &variable_name, const string &modifier, const string &_value="0")
	Returns a glsl string to perform the specified modifier function. More...

string	applyAlphaModifier (const string &variable_name, const string &modifier, const string &_value="0")
	Returns a glsl string to perform the specified modifier function. More...

string	combineFunction (const string &v0, const string &v1, const string &_function, const string &_value="0")
	Returns a glsl string that evaluates to the variable v0 and v1 combined with the specified funtion. More...

Protected Member Functions inherited from H3D::ComposedShader
void	setGeometryShaderParameters (GLenum _program_handle)
	Sets geometry shader paramters based on fields.

Protected Member Functions inherited from H3D::Node
void	cloneFieldValue (Field &_from, Field &_to, bool deepCopy, DeepCopyMap &deepCopyMap)
	A helper function for the clone() method. More...

Additional Inherited Members
Public Types inherited from H3D::ComposedShader
typedef DependentSFNode< ShaderConstants, FieldRef< H3DDisplayListObject, H3DDisplayListObject::DisplayList, &H3DDisplayListObject::displayList >, true >	SFShaderConstantsBase
	The SFShaderConstants field is dependent on the displayList field of the containing ShaderConstants node.

typedef DependentMFNode< ShaderPart, FieldRef< ShaderPart, ShaderPart::SFShaderString, &ShaderPart::shaderString >, true >	MFShaderPartBase
	The MFShaderPartBase is dependent on the url field of the containing ShaderPart node.

Public Types inherited from H3D::Node
typedef std::map< Node , Node >	DeepCopyMap
	A map type used during a deep copy clone() to map from original nodes to cloned nodes.

Static Public Member Functions inherited from H3D::H3DGeneratedShaderNode
static string	addUniformToFragmentShader (ComposedShader shader, const string &name, const string &glsl_type, const Field::AccessType &access, Field field, int array_size=-1, bool delete_unadded_field=true)
	Convenience function to add field in addUniformFields function to add uniform to fragment shader. More...

Static Public Member Functions inherited from H3D::X3DShaderNode
static X3DShaderNode *	getActiveShader ()
	Gets the currently active shader, i.e. More...

Static Public Member Functions inherited from H3D::Node
static unsigned int	nrNodesAlive ()
	Returns the nr of nodes currently alive, i.e. nodes created but not destructed.

static int	nrNodesCreated ()
	Returns the number of nodes created in total since the start of the program.

Static Protected Member Functions inherited from H3D::Node
static Node *	getClonedInstance (Node *original, bool deepCopy, DeepCopyMap &deepCopyMap)
	A helper function for nodes that implement clone() More...

Protected Attributes inherited from H3D::ComposedShader
GLhandleARB	program_handle
	The handle to the program object used for the shader in OpenGL.

vector< GLhandleARB >	current_shaders
	A vector of the handles to all shader objects that are currently linked into the program object.

H3DUniquePtr< SetupDynamicRoutes >	setupDynamicRoutes
	C++ fields only. Contains instance of SetupDynamicRoutes.

list< H3DSingleTextureNode * >	shader_textures
	list of textures to be used by the composedshader

H3DUniquePtr< UpdateUniforms >	updateUniforms
	A field used to update any uniforms from their corresponding fields.

Static Protected Attributes inherited from H3D::ComposedShader
static bool	tessellation_support_checked = false
	True if a warning has already been output about missing tessellation shader support.

Static Protected Attributes inherited from H3D::X3DProgrammableShaderObject
static bool	use_bindless_textures_set = false
	True if use_bindless_textures has already be set once.

Detailed Description

The ShaderCombiner node combines the output of several fragment shaders in different ways to produce a final value by a combination of the output values of the shaders.

Several functions are provided both to modify the shader output before combining and to combine the different shaders. Alpha channel and rgb values are treated separately with all fields affecting alpha starts with alpha..

There are two kinds of functions: combine functions and modifiers. Combine functions combine two values in some way and modifiers change a single value.

Let the input to the combine functions be called arg0 and arg1, the combine function f and the modifier function for arg0 and arg1 be mod0 and mod1 respectively.

The value from a combine function is then: value = f( mod0( arg0 ), mod1( arg1 ) )

The function and alphaFunction field specifies the combine function to use for RGB values and alpha values respectively. For RGB values all operations are component-wise and for arg0 and arg1 below have the modifier already applied:

"SELECT0"	arg0
"SELECT1"	arg1
"ADD"	arg0 + arg1
"SUBTRACT"	arg0 - arg1
"MULTIPLY"	arg0 * arg1
"DIVIDE"	arg0 / arg1
"BLEND_VALUE"	value * arg0 + (1-value)*arg1 where value is the value field.

For the RGB modifier fields arg0Modifyier and arg1Modifier the following values are possible. The modifiers are applied before the combine function and is per component. value in the table below is arg0Value or arg1Value depending on which argument is modified.

"COMPLEMENT"	1-v
"ADD"	v + value
"SUBTRACT"	v - value
"MULTIPLY"	v * value
"DIVIDE"	v / value
"NEGATE"	-v
"MULTIPLY_ALPHA"	v.rgb * v.a.
"MULTIPLY_ONE_MINUS_ALPHA"	v.rgb * (1-v.a)

For the alpha modifier fields alphaArg0Modifyier and alphaArg1Modifier the following values are possible. The modifiers are applied before the combine function and is per component. value in the table below is alphaArg0Value or alphaArg1Value depending on which argument is modified.

"COMPLEMENT"	1-v
"ADD"	v + value
"SUBTRACT"	v - value
"MULTIPLY"	v * value
"DIVIDE"	v / value
"NEGATE"	-v

The shaders field contains the shaders to be combined. If only one shader is provided only the arg0Modifyier and alphaArg0Modifier is applied and the function is ignored.

If more than two shaders are provided the functions are applied in succession like e.g. for three shaders:

[s0, s1, s2]  
t0 = func( mod0(s0), mod1(s1) )
final_color = func( mod0( t0 ), mod1( s2) ) 

Examples:

ShaderCombiner.x3d ( Source )
ShaderCombiner_functions.x3d ( Source )

Internal routes:

Member Function Documentation

◆ addUniformFields()

string ShaderCombiner::addUniformFields ( ComposedShader * shader )

protectedvirtual

Adds uniform fields to the shader.

A ComposedShader uses its dynamic fields to define uniform variables. Hence we need to add dynamic fields for each field that we want to be accessable in the shader.

Reimplemented from H3D::H3DGeneratedShaderNode.

References H3D::H3DGeneratedShaderNode::addUniformFields(), H3D::H3DGeneratedShaderNode::addUniformToFragmentShader(), alphaArg0Modifier, alphaArg0Value, alphaArg1Modifier, alphaArg1Value, alphaFunction, alphaValue, arg0Modifier, arg0Value, arg1Modifier, arg1Value, H3D::Field::INPUT_OUTPUT, shaders, H3DUtil::AutoRefVector< class >::size(), H3D::H3DGeneratedShaderNode::uniqueShaderName(), and value.

◆ applyAlphaModifier()

string ShaderCombiner::applyAlphaModifier	(	const string &	variable_name,
		const string &	modifier,
		const string &	_value = `"0"`
	)

protected

Returns a glsl string to perform the specified modifier function.

It returns a line variable_name.a = ...; that modifies the variable according to the modifier name. Possible values for modifier is the same as for the alphaArg0Modifier field.

Referenced by getFragmentShaderString().

◆ applyModifier()

string ShaderCombiner::applyModifier	(	const string &	variable_name,
		const string &	modifier,
		const string &	_value = `"0"`
	)

protected

Returns a glsl string to perform the specified modifier function.

It returns a line variable_name.rgb = ...; that modifies the variable according to the modifier name. Possible values for modifier is the same as for the arg0Modifier field.

Referenced by getFragmentShaderString().

◆ combineFunction()

string ShaderCombiner::combineFunction	(	const string &	v0,
		const string &	v1,
		const string &	_function,
		const string &	_value = `"0"`
	)

protected

Returns a glsl string that evaluates to the variable v0 and v1 combined with the specified funtion.

Possible values for modifier is the same as for the function field.

Referenced by getFragmentShaderString().

Member Data Documentation

◆ alphaArg0Modifier

H3DUniquePtr< SFString > H3D::ShaderCombiner::alphaArg0Modifier

alphaArg0Modifyier field specifies a modifier function that can be applied to the alpha output of the shader before being combined.

Operations are component-wise. Possible values are:

"COMPLEMENT"	1-v
"ADD"	v + alphaArg0Value
"SUBTRACT"	v - alphaArg0Value
"MULTIPLY"	v * alphaArg0Value
"DIVIDE"	v / alphaArg0Value
"NEGATE"	-v

Access type: inputOutput
Default value:"NONE"

Referenced by addUniformFields(), getFragmentShaderString(), and ShaderCombiner().

◆ alphaArg0Value

H3DUniquePtr< SFFloat > H3D::ShaderCombiner::alphaArg0Value

The alphaArg0Value field specifies a value that is used together with some of the alphaArg0Modifier functions.

Access type: inputOutput
Default value:0

Referenced by addUniformFields(), and ShaderCombiner().

◆ alphaArg1Modifier

H3DUniquePtr< SFString > H3D::ShaderCombiner::alphaArg1Modifier

alphaArg1Modifyier field specifies a modifier function that can be applied to the alpha output of the shader before being combined.

Operations are component-wise. Possible values are:

"COMPLEMENT"	1-v
"ADD"	v + alphaArg1Value
"SUBTRACT"	v - alphaArg1Value
"MULTIPLY"	v * alphaArg1Value
"DIVIDE"	v / alphaArg1Value
"NEGATE"	-v

Access type: inputOutput
Default value:"NONE"

Referenced by addUniformFields(), getFragmentShaderString(), and ShaderCombiner().

◆ alphaArg1Value

H3DUniquePtr< SFFloat > H3D::ShaderCombiner::alphaArg1Value

The alphaArg1Value field specifies a value that is used together with some of the alphaArg1Modifier functions.

Access type: inputOutput
Default value:0

Referenced by addUniformFields(), and ShaderCombiner().

◆ alphaFunction

H3DUniquePtr< SFString > H3D::ShaderCombiner::alphaFunction

The function field specifies the combine function to use for alpha values.

arg0 and arg1 have already had its modifier applied to it.

"SELECT0"	arg0
"SELECT1"	arg1
"ADD"	arg0 + arg1
"SUBTRACT"	arg0 - arg1
"MULTIPLY"	arg0 * arg1
"DIVIDE"	arg0 / arg1
"BLEND_VALUE"	alphaValue * arg0 + (1-value)*arg1 where value is the value field.

Access type: inputOutput
Default value:"SELECT1"

Referenced by addUniformFields(), getFragmentShaderString(), and ShaderCombiner().

◆ alphaValue

H3DUniquePtr< SFFloat > H3D::ShaderCombiner::alphaValue

The alphavalue field specifies a value that is used together with some of the alpha combiner functions, e.g.

the "BLEND_VALUE" function.

Access type: inputOutput
Default value:0

Referenced by addUniformFields(), and ShaderCombiner().

◆ arg0Modifier

H3DUniquePtr< SFString > H3D::ShaderCombiner::arg0Modifier

arg0Modifyier field specifies a modifier function that can be applied to the RGB output of the shader before being combined.

Operations are component-wise. Possible values are:

"COMPLEMENT"	1-v
"ADD"	v + arg0Value
"SUBTRACT"	v - arg0Value
"MULTIPLY"	v * arg0Value
"DIVIDE"	v / arg0Value
"NEGATE"	-v
"MULTIPLY_ALPHA"	v.rgb * v.a.
"MULTIPLY_ONE_MINUS_ALPHA"	v.rgb * (1-v.a)

Access type: inputOutput
Default value:"NONE"

Referenced by addUniformFields(), getFragmentShaderString(), and ShaderCombiner().

◆ arg0Value

H3DUniquePtr< SFFloat > H3D::ShaderCombiner::arg0Value

The arg0Value field specifies a value that is used together with some of the arg0Modifier functions.

Access type: inputOutput
Default value:0

Referenced by addUniformFields(), and ShaderCombiner().

◆ arg1Modifier

H3DUniquePtr< SFString > H3D::ShaderCombiner::arg1Modifier

arg1Modifyier field specifies a modifier function that can be applied to the RGB output of the shader before being combined.

Operations are component-wise. Possible values are:

"COMPLEMENT"	1-v
"ADD"	v + arg1Value
"SUBTRACT"	v - arg1Value
"MULTIPLY"	v * arg1Value
"DIVIDE"	v / arg1Value
"NEGATE"	-v
"MULTIPLY_ALPHA"	v.rgb * v.a.
"MULTIPLY_ONE_MINUS_ALPHA"	v.rgb * (1-v.a)

Access type: inputOutput
Default value:"NONE"

Referenced by addUniformFields(), getFragmentShaderString(), and ShaderCombiner().

◆ arg1Value

H3DUniquePtr< SFFloat > H3D::ShaderCombiner::arg1Value

The arg0Value field specifies a value that is used together with some of the arg0Modifier functions.

Access type: inputOutput
Default value:0

Referenced by addUniformFields(), and ShaderCombiner().

◆ function

H3DUniquePtr< SFString > H3D::ShaderCombiner::function

The function field specifies the combine function to use for RGB values.

For RGB values all operations are component-wise and for arg0 and arg1 below have the modifier already applied:

"SELECT0"	arg0
"SELECT1"	arg1
"ADD"	arg0 + arg1
"SUBTRACT"	arg0 - arg1
"MULTIPLY"	arg0 * arg1
"DIVIDE"	arg0 / arg1
"BLEND_VALUE"	value * arg0 + (1-value)*arg1 where value is the value field.

Access type: inputOutput
Default value:"SELECT1"

◆ shaders

H3DUniquePtr< MFGeneratedFragmentShaderNode > H3D::ShaderCombiner::shaders

The shaders field specifies a number of H3DGeneratedFragmentShaderNode instances that are to be combined.

Access type: inputOutput

Referenced by addUniformFields(), getAttributes(), getFragmentShaderString(), getFunctionShaderString(), getVaryingVariables(), getVertexShaderString(), ShaderCombiner(), and traverseSG().

◆ value

H3DUniquePtr< SFFloat > H3D::ShaderCombiner::value

The value field specifies a value that is used together with some of the combiner functions, e.g.

the "BLEND_VALUE" function.

Access type: inputOutput
Default value:0

Referenced by addUniformFields(), and ShaderCombiner().

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

Public Member Functions

Public Attributes

Static Public Attributes

Protected Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ addUniformFields()

◆ applyAlphaModifier()

◆ applyModifier()

◆ combineFunction()

Member Data Documentation

◆ alphaArg0Modifier

◆ alphaArg0Value

◆ alphaArg1Modifier

◆ alphaArg1Value

◆ alphaFunction

◆ alphaValue

◆ arg0Modifier

◆ arg0Value

◆ arg1Modifier

◆ arg1Value

◆ function

◆ shaders

◆ value