#include <ShaderOp.h>

Inheritance diagram for DD::Image::ShaderOp:

Public Member Functions
Op *	getOp () override
	Return the Op this interface is attached to, or the override Op if assigned.

void	setOverrideOp (Op *op) override

void	clearOverrideOp () override

Op *	getOverrideOp () const override

virtual MaterialOpI *	asMaterialOp ()
	Return this ShaderOp cast to the MaterialOpI interface, if it supports translation.

	ShaderOp (Node *)

const char *	node_shape () const override
	Define the material op's shape in the DAG.

unsigned	node_color () const override
	All material operators default to a orangish color.

bool	test_input (int node_input, Op *op) const override

Op *	default_input (int node_input) const override

Iop *	textureInput (int32_t node_input) const
	Return the input Op cast to an Iop, if possible.

virtual const Format *	outputFormat () const

Public Member Functions inherited from DD::Image::Op
PrevalidateResult	preValidate (ViewerContext ctx=nullptr, PreValidateContext =nullptr)

Op *	rootOp () const

bool	preValidateAborted (int treeStartingVersion, PrevalidateResult &result) const

const OutputSet &	getOutputs () const
	return all the outputs of this node

virtual void	setInputsValid (bool nowValid)
	set whether the input ops are valid (are for the right context)

bool	inputsValid () const
	return whether the input ops are valid (are for the right context)

virtual bool	can_clone () const
	returns whether or not an op can be cloned in the dag

bool	haveHash () const
	return true if the hash() value is meaningful and globally unique

bool	varyingOutputHash () const

void	setVaryingOutputHash (bool varyingHashes)
	Set the varyingOutputHash indicator to a specific state.

void	enableVaryingOutputHash ()
	Enable the varyingOutputHash indicator.

virtual Hash	editState () const

virtual void	setEditState (const Hash &h)

virtual std::vector< DD::Image::OutputContext >	getPrevVersionsWanted () const

virtual const MetaData::Bundle &	_fetchMetaData (const char *keyname)

const MetaData::Bundle &	fetchMetaData (const char *keyname)

Node *	node () const

DD::Image::NodeI *	getNode () const

void	node (Node *v)

const char *	nodeName () const
	Return NodeI::name() which is the Node's local name with no parent path.

std::string	nodeFullPath (char separator='.') const

Hash	nodeTopologyHash () const

Op *	firstOp () const

void	firstOp (Op *v)

Op *	parent () const

void	parent (Op *lpOp)

virtual void	detach ()
	node has been deleted in DAG

virtual void	attach ()
	node has been created in DAG

virtual void	pre_write_knobs ()

void	knobStorePrep (const OutputContext &storeContext)

virtual void	knobs (Knob_Callback)

void	knobStorePost (const OutputContext &storeContext, Hash &hash)

int	replace_knobs (Knob afterthis, int n, void(f)(void , Knob_Callback), void , const char *fileExt=nullptr)

int	add_knobs (void(f)(void , Knob_Callback), void *, Knob_Callback)

void	set_unlicensed ()

Knob *	knob (const char *name) const

Knob *	knob (int) const

bool	pushed () const

bool	panel_visible () const

bool	node_disabled () const

bool	node_selected () const

unsigned	node_gl_color () const

void *	field (const char *name)

void *	field (const char *name, int &type)

void *	set_field (const char name, const void source, int size)

void *	get_field (const char name, void dest, int size)

void	beginHandle (HandleType command, ViewerContext ctx, EventCallback cb, int index, float x=0, float y=0, float z=0, ViewerContext::Cursor cursor=ViewerContext::kNoCursor)

void	endHandle (ViewerContext *ctx)

virtual int	knob_changed (Knob *)

virtual int	knob_change_finished (Knob *knob, bool changedByUser=true)

void	addTime (OpTimer::Category category, long long microsecondsCPU, long long microsecondsWall, bool isTopLevel=true)

void	getPerformanceInfo (OpTimer::Category category, OpTimer::PerformanceInfo &info) const
	return the amount of CPU time taken by this op

virtual bool	inputs_clockwise () const
	whether unconnected inputs on the DAG should be arranged clockwise or anticlockwise (default)

virtual std::vector< int >	input_order () const

virtual int	inputArrows (int nodeInputs) const

bool	script_command (const char *command, bool py=true, bool eval=true) const

bool	script_expand (const char *str) const

HandlesMode	anyHandles (ViewerContext *ctx)

virtual void	build_handles (ViewerContext *)

void	add_draw_handle (ViewerContext *)

virtual void	draw_handle (ViewerContext *)

virtual void	add_input_handle (int input, ViewerContext *)

void	add_op_handle (ViewerContext *ctx)

void	add_knob_handle (Knob , ViewerContext )

virtual int	getViewableModes () const

virtual int	optional_input () const

virtual int	minimum_inputs () const

virtual int	maximum_inputs () const

virtual bool	test_input (int, Op *) const

int	inputs () const

int	node_inputs () const

Op *	node_input (int, GenerateType=OUTPUT_OP) const

Op *	node_input (int, GenerateType, const DD::Image::OutputContext *outputContext) const

Op *	input_op (int n=0) const

virtual void	inputs (int n)

Op *	input (int) const

int	inputNumber (int input, int offset) const

Op *	input (int input, int offset) const

Op *	input0 () const
	return the primary input

Op *	input1 () const
	return the second input, if it exists

const std::vector< Op * > &	getInputs () const

const std::vector< Op * > &	getChildren () const

virtual void	set_input (int i, Op *op, int input, int offset)

void	set_input0 (Op *op)

void	set_input (int i, Op *op)

void	set_input (int i, Op &op)

void	set_input (int input, int offset, Op *op)

const OutputContext &	outputContext () const

virtual void	setOutputContext (const OutputContext &c)

virtual void	append (Hash &)

virtual float	uses_input (int) const

virtual void	build_splits ()

virtual int	split_input (int) const

virtual const OutputContext &	inputContext (int n, int offset, OutputContext &) const

virtual const OutputContext *	inputUIContext (int n, OutputContext &) const

virtual Op *	default_input (int) const

const Hash &	hash () const

virtual bool	frameTransformImplemented () const

virtual bool	frameTransformDownstream (const OutputContext &context, unsigned int input, float inFrame, float &outFrame) const

virtual bool	frameTransformUpstream (const OutputContext &context, unsigned int input, float outFrame, float &inFrame) const

virtual DopeItemFlags::Mask	getDopeItemFlags () const

virtual bool	shouldHideInDopeSheet (Knob *knob) const

virtual DD::Image::Knob *	getDopeItemKnob () const

virtual ViewSet	viewsProduced () const

virtual ViewSet	viewsWantOn (int i) const

virtual ViewSet	splitForViews () const

bool	requested () const

void	setRequested ()

void	forgetRequestShallow ()

void	forget_request ()

void	forget_request (std::set< Op * > &forgotten)

virtual const char *	node_shape () const

DD::Image::Hash	curveHash () const

bool	opCurrent () const

virtual unsigned	node_color () const

virtual const char *	node_help () const =0

virtual const char *	input_label (int, char *) const

virtual std::string	input_longlabel (int) const

void	node_redraw ()

void	print_name (std::ostream &o) const

NodeContext	nodeContext () const

std::string	node_name () const
	Returns the same string as printed by print_name(ostream).

void	invalidateSameHash ()

bool	invalidate ()

bool	invalidate (const Hash &hash)

bool	update (const Box *=nullptr)

void	asapUpdate ()

void	asapUpdate (const Box &box, int direction=0)

void	validate (bool for_real=true)

virtual void	force_validate (bool for_real=true)

void	update_handles () const

bool	valid () const
	Returns true if it has been validated - including if there was an error.

bool	real_valid () const
	Returns true if it has been real-validated - including if there was an error.

bool	inErrorState () const

bool	inInvalidState () const

bool	opened () const

void	open ()

void	unopen ()

bool	running () const

void	running (bool v)

bool	not_closed () const

void	close ()

void	callCloseAfter (double seconds)

void	copyState (Op *input)

bool	cached () const

void	cached (bool b)

virtual bool	inUse () const

virtual Executable *	executable ()

void	setKnobsToContext (const OutputContext &, bool force=false)

void	gotoContext (const OutputContext &, bool update)

void	progressFraction (double fraction, StatusFlags flags=StatusNone)

void	progressFraction (int a, int b, StatusFlags flags=StatusNone)

void	progressMessage (const char *fmt,...)

void	progressModalMessage (const char *fmt,...)

void	progressDismiss ()

int	slowness () const

void	slowness (int newval)

virtual bool	firstEngineRendersWholeRequest () const

virtual bool	updateUI (const OutputContext &context)

const Format &	input_format () const

const OutputContext &	uiContext () const

void	error (const char *fmt,...)

void	warning (const char *fmt,...)

void	critical (const char *fmt,...)

void	debug (const char *fmt,...)

void	abort () const
	Abort all trees the op is in.

bool	aborted () const
	True if one of the trees the op is in was aborted; ops should check this while processing and return quickly when true.

void	cancel () const
	Cancel all trees the op is in. Make sure you also call abort() to stop processing.

bool	cancelled () const
	True if one of the trees the op is in was cancelled (by user interaction)

bool	addToTree (OpTree *lpTree)
	Returns true if the op was added to the tree, or false if its reference count increased.

bool	removeFromTree (OpTree *lpTree)
	Returns false if the op was removed from the tree, or true if its reference count decreased.

bool	isInTree (OpTree *lpTree) const
	Checks if an op is in a particular tree, for debugging purposes.

bool	isInAnyTree () const
	Checks if an op is in any tree at all.

OpTreeHandler *	getTreeHandler () const
	Returns the treeHandler for a given Op.

bool	hasError () const

bool	opOrChildHasError () const

const Op *	getErroredOp () const

void	setPopUpScheme (PopUpScheme lScheme)

PopUpScheme	getPopUpScheme () const

bool	arePopUpsEnabled ()
	Returns whether a pop-up should be enabled for the next message, modifying internal data when necessary.

OpMessageHandler &	getMsgHandler ()

const OpMessageHandler &	getMsgHandler () const

std::string	getDebugInfo () const
	Returns a string of debug information about the op. For internal use.

std::string	getDetailedDebugInfo () const

bool	tryValidate (bool for_real=true)

virtual Iop *	iop ()
	Cast to an Iop. This is much cheaper and safer than using dynamic_cast.

virtual const Iop *	iop () const

virtual GeoOp *	geoOp ()
	Cast to a GeoOp. This is much cheaper and safer than using dynamic_cast.

virtual const GeoOp *	geoOp () const

virtual GeomOp *	geomOp ()
	Cast to a GeomOp. This is much cheaper and safer than using dynamic_cast.

virtual const GeomOp *	geomOp () const

virtual ParticleOp *	particleOp ()
	Cast to a ParticleOp. This is much cheaper and safer than using dynamic_cast.

virtual const ParticleOp *	particleOp () const

virtual DeepOnlyOp *	deepOnlyOp ()
	Cast to a DeepOnlyOp. This is much cheaper and safer than using dynamic_cast.

virtual const DeepOnlyOp *	deepOnlyOp () const

virtual AxisOp *	axisOp ()
	Cast to an AxisOp. This is much cheaper and safer than using dynamic_cast.

virtual const AxisOp *	axisOp () const

virtual CameraOp *	cameraOp ()
	Cast to an CameraOp. This is much cheaper and safer than using dynamic_cast.

virtual const CameraOp *	cameraOp () const

virtual LightOp *	lightOp ()
	Cast to an LightOp. This is much cheaper and safer than using dynamic_cast.

virtual const LightOp *	lightOp () const

virtual std::string	getLibraryName () const
	Return a label and version string to display library version info for the Node.

virtual VersionInfo	getLibraryVersion () const

virtual OpHints	opHints () const
	Return hints to control when and how this op will be evaluated by the top-down system.

virtual std::string	resolveKnobAsset (Knob *knob, const std::string &assetPath)

virtual bool	updateKnobsFromAsset (Knob *knob)

virtual void	_updateKnobsFromAsset (Knob *assetKnob, const ndk::asset::AssetData &assetData)

virtual const char *	Class () const =0

const std::string	libraryDisplayName () const

virtual const char *	displayName () const

virtual std::string	docsPath () const

virtual bool	onAction (const ViewerContext c, const DD::Image::Flags f, void d)

Op *	get (const Description *description)

Public Member Functions inherited from DD::Image::MaterialOpI
virtual Op *	getOp ()
	Return the Op this interface is attached to. Should return 'this'.

virtual void	setOverrideOp (Op *)

virtual void	clearOverrideOp ()
	Disable any assigned override Op.

virtual Op *	getOverrideOp () const
	Return the override Op used for shader property value updating.

virtual usg::TokenArray	getAppliedApiSchemas () const
	Returns a list of API's this output shader must implement.

virtual const char *	getOutputSchema () const

virtual int32_t	getOutputType () const

bool	isCoShader () const
	Convenience to check output type.

bool	isSurfaceShader () const

bool	isLightShader () const

bool	isVolumeShader () const

virtual std::string	getShaderNodeName (const usg::Token &target_renderer=usg::Token())

virtual int32_t	connectionTypeForNodeInput (int32_t node_input) const

virtual usg::ShaderDesc *	createShaderGraph (int32_t output_type, const MaterialContext &rtx, usg::ShaderDescGroup &shader_group)

virtual usg::ShaderDesc *	createShaderGraphFromOp (Op *input_op, const MaterialContext &rtx, usg::ShaderDescGroup &shader_group)

virtual void	updateShaderGraphOverrides (int32_t output_type, const MaterialContext &rtx, usg::ShaderDescGroup &shader_group)

virtual void	updateShaderGraphFromOp (Op *input_op, const MaterialContext &rtx, usg::ShaderDescGroup &shader_group)

Static Public Member Functions
static usg::ShaderDesc *	createIopInterfaceGraph (Iop *input_iop, int32_t output_type, const MaterialContext &rtx, usg::ShaderDescGroup &shader_group)
	Create the ShaderDescs required to interface to an Iop texture source.

static void	updateIopInterfaceGraphOverrides (Iop *input_iop, int32_t output_type, const MaterialContext &rtx, usg::ShaderDescGroup &shader_group)
	Update the ShaderDescs required to interface to an Iop texture source.

static usg::ShaderDesc *	createCoShaderInterfaceGraph (ShaderOp *input_coshader, int32_t output_type, const MaterialContext &rtx, usg::ShaderDescGroup &shader_group)
	Create the ShaderDescs required to interface to a CoShader source.

static void	updateCoShaderInterfaceGraphOverrides (ShaderOp *input_coshader, int32_t output_type, const MaterialContext &rtx, usg::ShaderDescGroup &shader_group)
	Update the ShaderDescs required to interface to a CoShader source.

Static Public Member Functions inherited from DD::Image::Op
static int	treeVersion ()

static bool	nukeBusy ()
	is nuke processing something on a parallel thread?

static Op *	create (Node node, const char name, Op *p_op)

static Op *	create (const char name, Op p_op)

static void	resetTimers ()
	reset all the performance timers

static void	setTimingEnabled (bool enabled)
	turn performance timing on or off

static bool	isTimingEnabled ()
	return whether performance timing is on or not

static const char *	script_result (bool py=false)

static void	script_unlock ()

static Op *	retrieveOp (const char node_path, GenerateType generate_op_type, const OutputContext generate_op_context=nullptr)

static Op *	retrieveOp (const char *node_path, const Hash &op_hash, int tree_version)

static void	all_forget_request ()

static void	new_request_pass ()

static double	callPendingClose (double seconds)

static void	clearPendingClose ()

static Op *	error_op ()

static const char *	error_message ()

static void	clearAbortAndError ()
	To be removed.

static void	SetDefaultPopUpEnable (bool lEnable)
	This is used by Nuke to indicate when ops using the default pop-up scheme should show pop-ups. Not recommended for customisation.

static std::string	getVersionInfoStr (const VersionInfo &versionInfo)
	Helper function to convert a VersionInfo tuple into a string.

static const Description *	find_description (const char name, const Op op_)

static int	message_f (char t, const char *,...)

static int	message_vf (char t, const char *, va_list)

static void	add_timeout (float t, TimeoutHandler, void *v=nullptr)

static void	repeat_timeout (float t, TimeoutHandler, void *=nullptr)

static bool	has_timeout (TimeoutHandler, void *=nullptr)

static void	remove_timeout (TimeoutHandler, void *=nullptr)

Static Public Member Functions inherited from DD::Image::MaterialOpI
static std::string	getNodeInstanceSuffix (DD::Image::Op *op)

static std::string	buildName (const std::string &node_name, const char *schema_name)
	Convenience function builds a standard shader name with '<node_name>_<schema_name>'.

static std::string	buildName (const usg::Token &target_renderer, const std::string &node_name, const char *schema_name)
	Convenience function builds a standard shader name with '<target_renderer>_<node_name>_<schema_name>'.

static int32_t	getShaderTypeFromOp (Op *op)

static std::string	getShaderNodeNameFromOp (const usg::Token &target_renderer, Op *op)

static const char *	inputShaderTypeName (int32_t op_type)

static usg::ShaderDesc *	createOpInterfaceShaderDesc (int32_t op_type, Op *op)

static usg::ShaderDesc *	createOpInterfaceShaderDesc (Op *op)

static std::string	buildAssetPath (Op *input_op)

static bool	parseAssetPath (const std::string &path, std::string &nodePath, OutputContext &outputContext)

static Op *	retrieveOpFromAssetPath (const std::string &path)

Protected Attributes
Op *	_overrideOp
	Optional override Op to use for shader property value updating.

Protected Attributes inherited from DD::Image::Op
bool	_haveHash
	whether the _hash actually has been set by a call to invalidate(Hash) ever.

bool	_varyingOutputHash
	whether the hash value will animate over time

Hash	_editState
	Op's current edit state, usually the combination of input & knob edit states.

Additional Inherited Members
Public Types inherited from DD::Image::Op
enum	HandlesMode { eNoHandles , eHandlesUncooked , eHandlesCooked , eHandlesMax }

enum	PrevalidateResult { eFinished , eCancelled , eAbandoned }
	This is a tribool return value. Do not extend.

enum	HandleType { eNone , eMouseLeftClick , eMouseRightClick , eMouseMove , eMouseDrag , eMouseRelease , eSelectionChanged , eSelectionChangeFinished , eHandleDragTranslate , eHandleDragRotate , eHandleDragScale , eHandleDragPivot , eAllHandles }

enum	ViewableModes { eViewableMode2D , eViewableMode3D , eViewableMode3D_2DReference }

enum	GenerateType { OUTPUT_OP , ANY_CONTEXT , INPUT_OP , INPUT_OP_PEEK , EXECUTABLE , EXECUTABLE_SKIP , EXECUTABLE_INPUT , UICONTEXT_ONLY }

enum	NodeContext { eNodeGraph , eTimeline , eOpGraph }

enum	StatusFlags { StatusNone , StatusModal , StatusUseCallback }

enum	PopUpScheme { ePU_Never , ePU_Done , ePU_Once , ePU_Default , ePU_Always }
	Pop-up schemes determine when pop-up messages are displayed for op errors. More...

enum	VersionComponents { eMajor , eMinor , ePoint , eRevision }
	Enum to help get the desired version component from the VersionInfo tuple.

typedef std::pair< int, DD::Image::Op * >	Output
	Combination of input number and pointer to Op.

typedef std::set< Output >	OutputSet
	Set of all outputs from this Op.

typedef std::map< Hash, std::vector< unsigned int > >	ItemSelectionList

typedef bool()	EventCallback(Op *op, EventContext eventCtx)

using	VersionInfo = std::tuple< int, int, int, int >
	Contains version components with each index defined by the VersionComponents enum.

Public Types inherited from DD::Image::MaterialOpI
enum	{ INPUT_TYPE_NONE , INPUT_TYPE_OP , INPUT_TYPE_MATERIALOP , INPUT_TYPE_IOP , INPUT_TYPE_AXISOP , INPUT_TYPE_CAMERAOP , INPUT_TYPE_LIGHTOP }

enum	{ OUTPUT_TYPE_NONE , OUTPUT_TYPE_COSHADER , OUTPUT_TYPE_SURFACESHADER , OUTPUT_TYPE_LIGHTSHADER , OUTPUT_TYPE_VOLUMESHADER }

Public Attributes inherited from DD::Image::Op
const MetaData::Bundle *	metaCache

Hash	metaCacheHash

Static Public Attributes inherited from DD::Image::Op
static unsigned	current_request_pass

static void(*	node_redraw_cb )(const Op *)

static void(*	print_name_cb )(std::ostream &, const Op *)

static void(*	status_callback )(const Op , float, float, const char , StatusFlags)

static const int	kInvalidVersion

static const VersionInfo	kUnsetVersion

Protected Member Functions inherited from DD::Image::Op
	Op (Node *node)
	The constructor is protected so only subclasses can create the base class.

virtual void	_knobStorePrep (const OutputContext &storeContext)
	The subclass-specific portion of knobStorePrep(). See that method for more info.

virtual void	_knobStorePost (const OutputContext &storeContext, Hash &hash)
	The subclass-specific portion of knobStorePost(). See that method for more info.

virtual void	_invalidate ()

virtual void	_validate (bool for_real)

virtual void	_open ()

virtual void	_close ()

Op *	create (Node node, const char name)

Op *	create (const char *name)

HandlesMode	anyInputHandles (ViewerContext *)
	return if any of the inputs (recursively) wish to draw handles

HandlesMode	anyKnobHandles (ViewerContext *)
	return if any of the knobs on this node wish to draw handles

void	build_input_handles (ViewerContext *)

void	build_knob_handles (ViewerContext *)

void	disallowNoTrees ()
	Call this to tell the op that it should always have op trees for normal behaviour (for internal use)

virtual HandlesMode	doAnyHandles (ViewerContext *ctx)

virtual PrevalidateResult	doPreValidate (ViewerContext ctx=nullptr, PreValidateContext =nullptr)

Protected Member Functions inherited from DD::Image::MaterialOpI
virtual bool	overrideShaderDescInput (const char knob_name, const MaterialContext &rtx, usg::ShaderDesc &shader_desc, const char target_property_name, usg::Value::Type target_property_type_hint=usg::Value::Type::InvalidType)

virtual bool	overrideShaderDescInput (const Channel &chan, const MaterialContext &rtx, usg::ShaderDesc &shader_desc, const char *target_property_name)

virtual bool	overrideShaderDescInput (const Channel chan_array, uint32_t num_channels, const MaterialContext &rtx, usg::ShaderDesc &shader_desc, const char target_property_name)

virtual bool	overrideShaderDescInput (const ChannelSet &channels, const MaterialContext &rtx, usg::ShaderDesc &shader_desc, const char *target_property_name)

Detailed Description

Op base class for shader creating nodes.

Note that unlike the legacy Material class, ShaderOp is explicitly not* an Iop subclass and will not automatically work as a 'texture' source for other shaders.

Connection of ShaderOps to legacy Material class Ops is not allowed! This is explicitly to avoid blending 'Shader' nodes with image nodes within the same graph branch to better delineate which is a texture source to a shader and what is the shader using those textures.

The previous Material class conflated these concepts leading to confusing results when Material nodes were mixed with Iop nodes. For example it did not make much sense to have a Diffuse shader followed by a Blur node since the Blur is not processing random, spatially-incoherent surface samples like a surface shader does. Plus the output of Blur did not affect the output of the Diffuse node, and yet that connection was allowed.

Member Function Documentation

◆ getOp()

Op * DD::Image::ShaderOp::getOp ( )

inlineoverridevirtual

Return the Op this interface is attached to, or the override Op if assigned.

Reimplemented from DD::Image::MaterialOpI.

Reimplemented in DD::Image::CoShaderMaterialInterface.

◆ setOverrideOp()

void DD::Image::ShaderOp::setOverrideOp ( Op * op )

inlineoverridevirtual

Reimplemented from DD::Image::MaterialOpI.

◆ clearOverrideOp()

void DD::Image::ShaderOp::clearOverrideOp ( )

inlineoverridevirtual

Reimplemented from DD::Image::MaterialOpI.

◆ getOverrideOp()

Op * DD::Image::ShaderOp::getOverrideOp ( ) const

inlineoverridevirtual

Reimplemented from DD::Image::MaterialOpI.

◆ node_shape()

const char * DD::Image::ShaderOp::node_shape ( ) const

overridevirtual

Define the material op's shape in the DAG.

Reimplemented from DD::Image::Op.

◆ node_color()

unsigned DD::Image::ShaderOp::node_color ( ) const

overridevirtual

All material operators default to a orangish color.

Reimplemented from DD::Image::Op.

◆ test_input()

bool DD::Image::ShaderOp::test_input	(	int	node_input,
		Op *	op
	)		const

overridevirtual

Allow ShaderOp or Iop connections only.

Connection to legacy 'Material' class is not allowed! This is done explicitly to avoid mixing up 'shader' nodes with 'image' nodes.

An Iop connection is explicitly a texture source, and a ShaderOp connection is explicitly a shader source.

connectionTypeForNodeInput() is queried to further restrict the connection to explicitly Iops or explicitly ShaderOps. If the input is a ShaderOp its getOutputType() method is queried to match the connection types, and false is returned if they don't.

Other input Op types are not handled in the base class implementation.

Reimplemented from DD::Image::Op.

References DD::Image::MaterialOpI::isCoShader().

◆ default_input()

Op * DD::Image::ShaderOp::default_input ( int node_input ) const

inlineoverridevirtual

Returns nullptr for all inputs, including 0.

This means any disconnected input will not be connected to any valid Op by default, and all Op::input() tests should check for a null pointer result.

Note that the default output of this Op type is NOT an Iop so do not expect the 'Black' default Iop to be automatically connected to a dangling input.

Reimplemented from DD::Image::Op.

◆ outputFormat()

const Format * DD::Image::ShaderOp::outputFormat ( ) const

virtual

Return the nominal Format if the shader represents an image/texture/pattern source, otherwise null. A shader representing an image should return a locally-constructed Format or one from an Iop input source that represents the shader's nominal Format. For example the Project3DShader ShaderOp returns the Format from its input 0 which is the texture image being projected.

Default implementation returns the nominal Format of the surface by checking if input 0 is an Iop and returning its Format, or if input 0 is another ShaderOp pass on the outputFormat request, otherwise null.

Public Member Functions

Static Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ getOp()

◆ setOverrideOp()

◆ clearOverrideOp()

◆ getOverrideOp()

◆ node_shape()

◆ node_color()

◆ test_input()

◆ default_input()

◆ outputFormat()