class Enlighten::RectangleLight::CachedData

└>Enlighten::InputLightBase

Cached data for rectangle light.

Variables

Name	Description
Geo::v128 m_Colour	Colour.
Geo::v128 m_Direction	Forward direction.
bool m_HasChanged	Whether the light has changed since it was last given to the extended direct lighting api.
Geo::u32 m_HasVisibilityData	Has visibility data?
float m_Height	Height.
const eLightType m_LightType	Type of input light corresponding to an eLightType enum value.
Geo::u64 m_Padding	Unused (this class is usually extended by one that starts with multiple v128s)
Geo::u32 m_PaddingA	Unused padding.
Geo::u32 m_PaddingB	Unused padding.
Geo::u32 m_PaddingC	Unused padding.
Geo::v128 m_Position	Position.
Geo::v128 m_RightDirection	Right direction.
Geo::v128 m_UpDirection	Up direction.
const Geo::u8 * m_VisibilityData	Visibility data.
Geo::u64 m_VisibilityData64	Visibility data.
float m_Width	Width.

Functions

Name	Description
CachedData(const RectangleLight &, const void *)	Constructor.
CalcEdgeContribution(Geo::v128, Geo::v128, Geo::v128, const Geo::v128 &)	Note - the 4th v128 parameter has to be passed as a reference as the vs2008 compiler can't pass more than 3 v128s as values and preserve alignment.
DistanceFilter(float)	Return true if this light affects a system at the specified distance from the viewer.
Hash(Helpers::Hasher &, Geo::u32, Geo::u32)	Hash the light data.
InputLightBase(eLightType)	Constructor.
InputLightBase(eLightType, bool)	Constructor.
IsIntersectingCluster(const Geo::v128 &, const Geo::v128 &, const Geo::v128 &, const Geo::v128 &)	Complex light V normalBoundingBox intersection test.
IsIntersectingClusterGroup(const Geo::v128 &, const Geo::v128 &, const Geo::v128 &, const Geo::v128 &)	Light v ClusterGroup Bounding box intersection test.
IsIntersectingSystem(const Geo::v128 &, const Geo::v128 &)	Simple Light V system BoundingBox intersection test.
ShadeFourSamples(const Geo::v128 &, const Geo::v128 &, const Geo::v128 &, const Geo::v128 &, const Geo::v128 &, const Geo::v128 &, Geo::u32, Geo::v128 &, Geo::v128 &, Geo::v128 &, Geo::v128 &)	Shades the given samples.
ShadePoint(Geo::v128, Geo::v128)	This computes the illumination on samplePos/sampleNormal from the area light description.
ShadeQuad(const Geo::v128 &, const Geo::v128 &, const Geo::v128 &, const Geo::v128 &, const Geo::v128 &, const Geo::v128 &, Geo::u32, Geo::u32)	Shades the given quad.
ShadeQuadIntensities(const Geo::v128 &, const Geo::v128 &, const Geo::v128 &, const Geo::v128 &, const Geo::v128 &, const Geo::v128 &, const Geo::v128 &)	Shades the given quads.

Enlighten::RectangleLight::CachedData::CachedData

public: CachedData
(
const RectangleLight & rectangleLight,
const void * perDusterVisibility
)

Constructor.

GEO_CONTROLLED_INLINE float Enlighten::RectangleLight::CachedData::CalcEdgeContribution

public: GEO_CONTROLLED_INLINE float CalcEdgeContribution
(
Geo::v128 v0,
Geo::v128 v1,
Geo::v128 samplePos,
const Geo::v128 & sampleNormal
) const

Note - the 4th v128 parameter has to be passed as a reference as the vs2008 compiler can't pass more than 3 v128s as values and preserve alignment.

GEO_CONTROLLED_INLINE bool Enlighten::InputLightBase::DistanceFilter

public: GEO_CONTROLLED_INLINE bool DistanceFilter
(
float viewDistance
) const

Return true if this light affects a system at the specified distance from the viewer.

void Enlighten::RectangleLight::CachedData::Hash

public: void Hash
(
Helpers::Hasher & hash,
Geo::u32 clusterVisSize,
Geo::u32 quadVisSize
)

Hash the light data.

Enlighten::InputLightBase::InputLightBase

protected: InputLightBase
(
eLightType lightType
)

Constructor.

Enlighten::InputLightBase::InputLightBase

protected: InputLightBase
(
eLightType lightType,
bool hasChanged
)

Constructor.

GEO_CONTROLLED_INLINE bool Enlighten::RectangleLight::CachedData::IsIntersectingCluster

public: GEO_CONTROLLED_INLINE bool IsIntersectingCluster
(
const Geo::v128 & bbMin,
const Geo::v128 & bbMax,
const Geo::v128 & minNormalFlipped,
const Geo::v128 & maxNormalFlipped
) const

Complex light V normalBoundingBox intersection test.

GEO_CONTROLLED_INLINE bool Enlighten::RectangleLight::CachedData::IsIntersectingClusterGroup

public: GEO_CONTROLLED_INLINE bool IsIntersectingClusterGroup
(
const Geo::v128 & bbMin,
const Geo::v128 & bbMax,
const Geo::v128 & minNormalFlipped,
const Geo::v128 & maxNormalFlipped
) const

Light v ClusterGroup Bounding box intersection test.

GEO_CONTROLLED_INLINE bool Enlighten::RectangleLight::CachedData::IsIntersectingSystem

public: GEO_CONTROLLED_INLINE bool IsIntersectingSystem
(
const Geo::v128 & bbMin,
const Geo::v128 & bbMax
) const

Simple Light V system BoundingBox intersection test.

GEO_CONTROLLED_INLINE void Enlighten::RectangleLight::CachedData::ShadeFourSamples

public: GEO_CONTROLLED_INLINE void ShadeFourSamples
(
const Geo::v128 & positionsX,
const Geo::v128 & positionsY,
const Geo::v128 & positionsZ,
const Geo::v128 & normalsX,
const Geo::v128 & normalsY,
const Geo::v128 & normalsZ,
Geo::u32 sampleIdx,
Geo::v128 & colourOut0,
Geo::v128 & colourOut1,
Geo::v128 & colourOut2,
Geo::v128 & colourOut3
) const

Shades the given samples.

GEO_CONTROLLED_INLINE Geo::v128 Enlighten::RectangleLight::CachedData::ShadePoint

public: GEO_CONTROLLED_INLINEGeo::v128 ShadePoint
(
Geo::v128 samplePos,
Geo::v128 sampleNormal
) const

This computes the illumination on samplePos/sampleNormal from the area light description.

It uses a bit of stokes theorem to integrate the area of the rectangle by clipping and integrating around it's contour.

GEO_CONTROLLED_INLINE Geo::v128 Enlighten::RectangleLight::CachedData::ShadeQuad

public: GEO_CONTROLLED_INLINEGeo::v128 ShadeQuad
(
const Geo::v128 & positionsX,
const Geo::v128 & positionsY,
const Geo::v128 & positionsZ,
const Geo::v128 & normalsX,
const Geo::v128 & normalsY,
const Geo::v128 & normalsZ,
Geo::u32 clusterIdx,
Geo::u32 quadIdx
) const

Shades the given quad.

GEO_CONTROLLED_INLINE Geo::v128 Enlighten::RectangleLight::CachedData::ShadeQuadIntensities

public: GEO_CONTROLLED_INLINEGeo::v128 ShadeQuadIntensities
(
const Geo::v128 & positionsX,
const Geo::v128 & positionsY,
const Geo::v128 & positionsZ,
const Geo::v128 & normalsX,
const Geo::v128 & normalsY,
const Geo::v128 & normalsZ,
const Geo::v128 & visibility
) const

Shades the given quads.

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