Ogre::IrradianceField Class Reference

Implements an Irradiance Field with Depth, inspired on DDGI. More...

#include <OgreIrradianceField.h>

Inheritance diagram for Ogre::IrradianceField:

Public Types
enum	DebugVisualizationMode { DebugVisualizationColour , DebugVisualizationDepth , DebugVisualizationNone }

Public Member Functions
	IrradianceField (Root *root, SceneManager *sceneManager)
	~IrradianceField ()
void	createTextures ()
void	destroyTextures ()
void	fillConstBufferData (const Matrix4 &viewMatrix, float *RESTRICT_ALIAS passBufferPtr) const
size_t	getConstBufferSize () const
uint8	getDebugTessellation () const
bool	getDebugVisualizationMode () const
TextureGpu *	getDepthVarianceTex () const
IdType	getId () const
	Get the unique id of this object. More...
TextureGpu *	getIrradianceTex () const
void	initialize (const IrradianceFieldSettings &settings, const Vector3 &fieldOrigin, const Vector3 &fieldSize, VctLighting *vctLighting)
	initialize More...
bool	operator() (const IdObject &left, const IdObject &right)
bool	operator() (const IdObject *left, const IdObject *right)
void	reset ()
	If VctLighting was updated with minor changes (e.g. More...
void	setDebugVisualization (IrradianceField::DebugVisualizationMode mode, SceneManager *sceneManager, uint8 tessellation)
void	update (uint32 probesPerFrame=200u)

Friends
class	IrradianceFieldRaster

Detailed Description

Implements an Irradiance Field with Depth, inspired on DDGI.

We use the voxelized results from VCT. Afterwards once we have Raytracing, we'll also allow to use Raytracing instead; since both are very similars (with VCT we shoot cones instead of rays)

See also

Snippet taken from Dynamic Diffuse Global Illumination with Ray-Traced Irradiance Fields Zander Majercik, NVIDIA; Jean-Philippe Guertin, Université de Montréal; Derek Nowrouzezahrai, McGill University; Morgan McGuire, NVIDIA and McGill University http://jcgt.org/published/0008/02/01/

https://github.com/OGRECave/ogre-next/issues/29

Member Enumeration Documentation

DebugVisualizationMode

enum Ogre::IrradianceField::DebugVisualizationMode

Enumerator
DebugVisualizationColour
DebugVisualizationDepth
DebugVisualizationNone

Constructor & Destructor Documentation

IrradianceField()

Ogre::IrradianceField::IrradianceField	(	Root *	root,
		SceneManager *	sceneManager
	)

~IrradianceField()

Ogre::IrradianceField::~IrradianceField

(

)

Member Function Documentation

createTextures()

void Ogre::IrradianceField::createTextures

(

)

destroyTextures()

void Ogre::IrradianceField::destroyTextures

(

)

fillConstBufferData()

void Ogre::IrradianceField::fillConstBufferData	(	const Matrix4 &	viewMatrix,
		float *RESTRICT_ALIAS	passBufferPtr
	)		const

getConstBufferSize()

size_t Ogre::IrradianceField::getConstBufferSize

(

)

const

getDebugTessellation()

uint8 Ogre::IrradianceField::getDebugTessellation

(

)

const

getDebugVisualizationMode()

bool Ogre::IrradianceField::getDebugVisualizationMode

(

)

const

getDepthVarianceTex()

TextureGpu* Ogre::IrradianceField::getDepthVarianceTex ( ) const

inline

getId()

IdType Ogre::IdObject::getId ( ) const

inlineinherited

Get the unique id of this object.

getIrradianceTex()

TextureGpu* Ogre::IrradianceField::getIrradianceTex ( ) const

inline

initialize()

void Ogre::IrradianceField::initialize	(	const IrradianceFieldSettings &	settings,
		const Vector3 &	fieldOrigin,
		const Vector3 &	fieldSize,
		VctLighting *	vctLighting
	)

initialize

Parameters

settings
fieldOrigin
fieldSize
vctLighting	This value is ignored if IrradianceFieldSettings::usesRaster() returns true, and must be non-null if it returns false

operator()() [1/2]

bool Ogre::IdObject::operator() ( const IdObject &  left, const IdObject &  right  )

inlineinherited

operator()() [2/2]

bool Ogre::IdObject::operator() ( const IdObject *  left, const IdObject *  right  )

inlineinherited

reset()

void Ogre::IrradianceField::reset

(

)

If VctLighting was updated with minor changes (e.g.

light position/direction changed, number of bounces setting changed) then call this function so update() process it again.

If major changes happens to VctLighting, then call initialize() again

setDebugVisualization()

void Ogre::IrradianceField::setDebugVisualization	(	IrradianceField::DebugVisualizationMode	mode,
		SceneManager *	sceneManager,
		uint8	tessellation
	)

Parameters

mode
sceneManager	Can be nullptr only if mode == IrradianceField::DebugVisualizationNone
tessellation	Value in range [3; 16] Note this value increases exponentially: tessellation = 3u -> 24 vertices (per sphere) tessellation = 4u -> 112 vertices tessellation = 5u -> 480 vertices tessellation = 6u -> 1984 vertices tessellation = 7u -> 8064 vertices tessellation = 8u -> 32512 vertices tessellation = 9u -> 130560 vertices tessellation = 16u -> 2.147.418.112 vertices

update()

void Ogre::IrradianceField::update

(

uint32

probesPerFrame = 200u

)

Friends And Related Function Documentation

IrradianceFieldRaster

friend class IrradianceFieldRaster

friend

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

• OgreIrradianceField.h