Inherits AZ::ComponentConfig.

Public Member Functions
	AZ_RTTI (DirectionalLightComponentConfig, "EB01B835-F9FE-4FF0-BDC4-455462BFE769", ComponentConfig)

const char *	GetIntensitySuffix () const
	Returns characters for a suffix for the light type including a space. " lm" for lumens for example.

float	GetIntensityMin () const
	Returns the minimum intensity value allowed depending on the m_intensityMode.

float	GetIntensityMax () const
	Returns the maximum intensity value allowed depending on the m_intensityMode.

float	GetIntensitySoftMin () const
	Returns the minimum intensity value for UI depending on the m_intensityMode, but users may still type in a lesser value depending on GetIntensityMin().

float	GetIntensitySoftMax () const
	Returns the maximum intensity value for UI depending on the m_intensityMode, but users may still type in a greater value depending on GetIntensityMin().

bool	IsSplitManual () const

bool	IsSplitAutomatic () const

bool	IsCascadeCorrectionDisabled () const

bool	IsShadowFilteringDisabled () const

bool	IsShadowPcfDisabled () const

bool	IsEsmDisabled () const

AZ::Crc32	UpdateCascadeFarDepths ()

Static Public Member Functions
static void	Reflect (ReflectContext *context)

Public Attributes
AZ::Color	m_color = AZ::Color::CreateOne()

PhotometricUnit	m_intensityMode = PhotometricUnit::Ev100Illuminance
	Lux or Ev100.

float	m_intensity = 4.0f
	Intensity in lux or Ev100 (depending on m_intensityMode)

float	m_angularDiameter = 0.5f
	Angular diameter of light in degrees, should be small. The sun is about 0.5.

EntityId	m_cameraEntityId { EntityId::InvalidEntityId }
	EntityId of the camera specifying view frustum to create shadowmaps.

float	m_shadowFarClipDistance = 100.f
	Far depth clips for shadows.

ShadowmapSize	m_shadowmapSize = ShadowmapSize::Size1024
	Width/Height of shadowmap images.

uint32_t	m_cascadeCount = 4
	Number of cascades.

bool	m_isShadowmapFrustumSplitAutomatic = true

float	m_shadowmapFrustumSplitSchemeRatio = 0.9f

AZ::Vector4	m_cascadeFarDepths

float	m_groundHeight = 0.f

bool	m_isCascadeCorrectionEnabled = false

bool	m_isDebugColoringEnabled = false
	Flag specifying whether debug coloring is added.

ShadowFilterMethod	m_shadowFilterMethod = ShadowFilterMethod::None
	Method of shadow's filtering.

float	m_normalShadowBias = 2.5f

uint16_t	m_filteringSampleCount = 32

bool	m_receiverPlaneBiasEnabled = true

float	m_shadowBias = 0.0015f
	Reduces shadow acne by applying a small amount of offset along shadow-space z.

bool	m_cascadeBlendingEnabled = false

bool	m_fullscreenBlurEnabled = true

float	m_fullscreenBlurConstFalloff = 2.0f / 3.0f
	How much a value is reduced from pixel to pixel on a perfectly flat surface.

float	m_fullscreenBlurDepthFalloffStrength = 50.0f

bool	m_affectsGI = true

float	m_affectsGIFactor = 1.0f

Member Data Documentation

◆ m_cascadeFarDepths

AZ::Vector4 AZ::Render::DirectionalLightComponentConfig::m_cascadeFarDepths

Initial value:

{
                m_shadowFarClipDistance * 1 / Shadow::MaxNumberOfCascades,
                m_shadowFarClipDistance * 2 / Shadow::MaxNumberOfCascades,
                m_shadowFarClipDistance * 3 / Shadow::MaxNumberOfCascades,
                m_shadowFarClipDistance * 4 / Shadow::MaxNumberOfCascades
            }

Far depth for each cascade. Note that near depth of a cascade equals the far depth of the previous cascade. This is valid only when m_shadowmapFrustumSplitIsAutomatic = false.

◆ m_filteringSampleCount

uint16_t AZ::Render::DirectionalLightComponentConfig::m_filteringSampleCount = 32

Sample Count for filtering (from 4 to 64) It is used only when the pixel is predicted as on the boundary.

◆ m_fullscreenBlurDepthFalloffStrength

float AZ::Render::DirectionalLightComponentConfig::m_fullscreenBlurDepthFalloffStrength = 50.0f

How much the difference in depth slopes between pixels affects the blur falloff. The higher this value, the sharper edges will appear

◆ m_groundHeight

float AZ::Render::DirectionalLightComponentConfig::m_groundHeight = 0.f

Height of camera from the ground. The position of view frustum is corrected using cameraHeight to get better quality of shadow around the area close to the camera. To enable the correction, m_isCascadeCorrectionEnabled=true is required.

◆ m_isCascadeCorrectionEnabled

bool AZ::Render::DirectionalLightComponentConfig::m_isCascadeCorrectionEnabled = false

Flag specifying whether view frustum positions are corrected. The calculation of it is caused when the position of configuration of the camera is changed.

◆ m_isShadowmapFrustumSplitAutomatic

bool AZ::Render::DirectionalLightComponentConfig::m_isShadowmapFrustumSplitAutomatic = true

Flag to switch splitting of shadowmap frustum to cascades automatically or not. If true, m_shadowmapFrustumSplitSchemeRatio is used. If false, m_cascadeFarDepths is used.

◆ m_receiverPlaneBiasEnabled

bool AZ::Render::DirectionalLightComponentConfig::m_receiverPlaneBiasEnabled = true

Whether not to enable the receiver plane bias. This uses partial derivatives to reduce shadow acne when using large pcf kernels.

◆ m_shadowmapFrustumSplitSchemeRatio

float AZ::Render::DirectionalLightComponentConfig::m_shadowmapFrustumSplitSchemeRatio = 0.9f

Ratio to lerp between the two types of frustum splitting scheme. 0 = Uniform scheme which will split the Frustum evenly across all cascades. 1 = Logarithmic scheme which is designed to split the frustum in a logarithmic fashion in order to enable us to produce a more optimal perspective aliasing across the frustum. This is valid only when m_shadowmapFrustumSplitIsAutomatic = true.

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

Gems/AtomLyIntegration/CommonFeatures/Code/Include/AtomLyIntegration/CommonFeatures/CoreLights/DirectionalLightComponentConfig.h

Public Member Functions

Static Public Member Functions

Public Attributes