LightHandler Class Reference

Utility light handler for creating and providing light data for shader binding. More...

#include <LightHandler.h>

Public Member Functions
Global State
void	setLightTransform (const Matrix44 &mat)
	Set the light transform.
Matrix44	getLightTransform () const
	Return the light transform.
void	setDirectLighting (bool enable)
	Set whether direct lighting is enabled.
bool	getDirectLighting () const
	Return whether direct lighting is enabled.
void	setIndirectLighting (bool enable)
	Set whether indirect lighting is enabled.
bool	getIndirectLighting () const
	Return whether indirect lighting is enabled.
Environment Lighting
void	setEnvRadianceMap (ImagePtr map)
	Set the environment radiance map.
ImagePtr	getEnvRadianceMap () const
	Return the environment radiance map.
void	setEnvPrefilteredMap (ImagePtr map)
	Set the environment radiance map for the prefiltered environment lighting model.
ImagePtr	getEnvPrefilteredMap () const
	Return the environment radiance map for the prefiltered environment lighting model.
void	setUsePrefilteredMap (bool val)
	Set whether to use the prefiltered environment lighting model.
bool	getUsePrefilteredMap ()
	Return whether to use the prefiltered environment lighting model.
void	setEnvIrradianceMap (ImagePtr map)
	Set the environment irradiance map.
ImagePtr	getEnvIrradianceMap () const
	Return the environment irradiance map.
void	setEnvSampleCount (int count)
	Set the environment lighting sample count.
int	getEnvSampleCount () const
	Return the environment lighting sample count.
void	setEnvLightIntensity (const float intensity)
	Set the environment light intensity.
float	getEnvLightIntensity ()
	Return the environment light intensity.
void	setRefractionTwoSided (bool enable)
	Set the two-sided refraction property.
int	getRefractionTwoSided () const
	Return the two-sided refraction property.
Albedo Table
void	setAlbedoTable (ImagePtr table)
	Set the directional albedo table.
ImagePtr	getAlbedoTable () const
	Return the directional albedo table.
Light Sources
void	addLightSource (NodePtr node)
	Add a light source.
void	setLightSources (const vector< NodePtr > &lights)
	Set the vector of light sources.
const vector< NodePtr > &	getLightSources () const
	Return the vector of light sources.
NodePtr	getFirstLightOfCategory (const string &category)
	Return the first light source, if any, of the given category.
Light IDs
const std::unordered_map< string, unsigned int > &	getLightIdMap () const
	Get a list of identifiers associated with a given light nodedef.
LightIdMap	computeLightIdMap (const vector< NodePtr > &nodes)
	From a set of nodes, create a mapping of corresponding nodedef identifiers to numbers.
void	findLights (DocumentPtr doc, vector< NodePtr > &lights)
	Find lights to use based on an input document.
void	registerLights (DocumentPtr doc, const vector< NodePtr > &lights, GenContext &context)
	Register light node definitions and light count with a given generation context.

Static Public Member Functions
static LightHandlerPtr	create ()
	Create a new light handler.

Protected Attributes
Matrix44	_lightTransform
bool	_directLighting
bool	_indirectLighting
bool	_usePrefilteredMap
ImagePtr	_envRadianceMap
ImagePtr	_envPrefilteredMap
ImagePtr	_envIrradianceMap
float	_envLightIntensity
int	_envSampleCount
bool	_refractionTwoSided
ImagePtr	_albedoTable
vector< NodePtr >	_lightSources
std::unordered_map< string, unsigned int >	_lightIdMap

Detailed Description

Utility light handler for creating and providing light data for shader binding.

Member Function Documentation

findLights()

void findLights	(	DocumentPtr	doc,
		vector< NodePtr > &	lights )

Find lights to use based on an input document.

Parameters

doc	Document to scan for lights
lights	List of lights found in document

registerLights()

void registerLights	(	DocumentPtr	doc,
		const vector< NodePtr > &	lights,
		GenContext &	context )

Register light node definitions and light count with a given generation context.

Parameters

doc	Document containing light nodes and definitions
lights	Lights to register
context	Context to update

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

• source/MaterialXRender/LightHandler.h