slr::SlrLightInfo Class Reference

Public Member Functions
SlrLightShader *	light () const
	Convenience to get light shader from material. Warning, does no null testing!
const fdk::Vec3f &	x () const
const fdk::Vec3f &	y () const
const fdk::Vec3f &	z () const
const fdk::Vec3d &	p () const

Public Attributes
uint32_t	light_index
	Index of the light prim in the SlrLightInfoList in SlrRenderContext.
usg::StageRef	stage
	Stage containing Prim.
const usg::Path *	prim_path
	Prim path in Stage (stored in Render prim_path_cache)
SlrLightMaterial *	material
	Light material (stored in SlrRenderContext)
bool	cast_shadows
	Does the light cast a shadow?
bool	enabled
	Light is 'on' for this scene.
fdk::TimeValue	time
	Time of this prim reference.
fdk::Vec3d	ltPW
	Light origin in world-space.
fdk::Vec3f	ltX
	Light X vector in world-space, normalized.
fdk::Vec3f	ltY
	Light Y vector in world-space, normalized.
fdk::Vec3f	ltZ
	Light Z vector in world-space, normalized.
ShadowmapRender *	depthmap
	Light's depth renderer, if it has one.
SlrScene *	depthmap_scene
	To get at the light's depthmap transforms.
fdk::Mat4dList	depthmap_transforms
	Double-precision scene-transform matrices configured for depthmap render.

Friends
std::ostream &	operator<< (std::ostream &, const SlrLightInfo &)

Detailed Description

Replacement for legacy LightContext structure used in the legacy DD::Image::Render based architecture like ScanlineRender, DepthMapRender, etc.

This structure represents a single usg::Prim at a single time sample. The Prim's attributes are not copied to time-sampled local arrays, that is left to the render light shader adapters at render time. However the Prim's concatenated scene transform is time sampled and stored in the 'depthmap_transforms' - note that all matrices are now double-precision.

Contains an Axis object which contains transformed & normalized Eigen vectors for fast vector comparison in shaders.

The 'depthmap_transforms' camera and projection matrices are used for shadowmap projections.