VertexGeometryModule

Detailed Description

One of the tricks to high performance rendering is tightly packing all necessary information, so as to consume as little bandwith and on-chip memory as possible. This module introduces two structures to do so to represent path vertex geometry:

• VertexGeometryId: to encode the minimal amount of information needed to represent a point on a surface, or a hit in ray tracing parlance;
• VertexGeometry: to encode a slightly expanded version on the local differential surface geometry at a point, including its tangent, binormal and normal, as well the local texture coordinates;

Classes
struct	VertexGeometry
struct	VertexGeometryId
struct	VertexStorageView
struct	VertexStorage

Enumerations
enum	VertexSampling { kAll = 0, kEnd = 1 }
enum	VertexOrdering { kRandomOrdering = 0, kPathOrdering = 1 }

Functions
FERMAT_HOST_DEVICE FERMAT_FORCEINLINE uint32	pack_direction (const cugar::Vector3f &dir)
FERMAT_HOST_DEVICE FERMAT_FORCEINLINE cugar::Vector3f	unpack_direction (const uint32 packed_dir)

Function Documentation

pack_direction()

FERMAT_HOST_DEVICE FERMAT_FORCEINLINE uint32 pack_direction

(

const cugar::Vector3f &

dir

)

pack a normalized direction vector in 32-bits

unpack_direction()

FERMAT_HOST_DEVICE FERMAT_FORCEINLINE cugar::Vector3f unpack_direction

(

const uint32

packed_dir

)

unpack a 32-bits normalized direction vector