Vkm::Engine::LightData Struct Reference

One light affecting the frame, resolved to world space. More...

#include <light_data.h>

Public Attributes
uint32_t	entitySlot = 0
	The entity slot this light was gathered from.
glm::vec3	direction
	Travel direction; used by directional/spot.
float	radius
	Attenuation radius (point/spot/area)
float	innerConeAngle
	Spot: full-brightness cone (radians)
float	outerConeAngle
	Spot: falloff edge (radians)
glm::vec3	axisU {0.0f}
	Rect/Disk: half-right world axis.
glm::vec3	axisV {0.0f}
	Rect/Disk: half-up world axis.
bool	twoSided
	Rect/Disk: emit from both faces.
float	shadowBias
	See Light::shadowBias.
float	shadowNormalBias
	2D only: normal offset before the compare, in shadow texels
float	shadowDistance
	Directional only: world distance the cascades cover.
float	sourceRadius = 0.0f
	Light::sourceRadius: radians for a directional light, metres otherwise.

Detailed Description

One light affecting the frame, resolved to world space.

Covers every LightType; area lights carry rotation and size folded into two world-space half-extent axes.

Member Data Documentation

entitySlot

uint32_t Vkm::Engine::LightData::entitySlot = 0

The entity slot this light was gathered from.

A stable tie-break (as findLowestSlot) for scarce shadow atlas slots: list order is SparseSet packing, which moves when an unrelated light is destroyed.

sourceRadius

float Vkm::Engine::LightData::sourceRadius = 0.0f

Light::sourceRadius: radians for a directional light, metres otherwise.

Sizes a directional or spot light's penumbra, and a directional light's highlight. Zero is a point.

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

• system/render/data/light_data.h