glsl::octahedral_glsl Class Reference

Efficient GPU implementation of the octahedral unit vector encoding from More...

Public Member Functions
vec3	octDecode (vec2 o)
	Returns a unit vector. More...
vec2	octEncode (in vec3 v)
	Assumes that v is a unit vector. More...

Detailed Description

Efficient GPU implementation of the octahedral unit vector encoding from

Referenced Code: Cigolle, Donow, Evangelakos, Mara, McGuire, Meyer,

Referenced Code: A Survey of Efficient Representations for Independent Unit Vectors, Journal of Computer Graphics Techniques (JCGT), vol. 3, no. 2, 1-30, 2014

Referenced Code: Available online http://jcgt.org/published/0003/02/01/

Member Function Documentation

octDecode()

vec3 glsl::octahedral_glsl::octDecode ( vec2  o )

inline

Returns a unit vector.

Argument o is an octahedral vector packed via octEncode, on the [-1, +1] square

octEncode()

vec2 glsl::octahedral_glsl::octEncode ( in vec3  v )

inline

Assumes that v is a unit vector.

The result is an octahedral vector on the [-1, +1] square.