module Colours

Name	Description
Geo::GeoFloat3SE
Geo::GeoFloatAsBits	Allow safe conversion between a float and its representative bit pattern.

Name	Description
ConstructFloatPow2(int)	Constructs a float which is exactly equal to 1x2^exponent.
ConvertColourToV(GeoColour)	The 4 float components of v128 correspond to the native ordering of the 4 byte components of u32.
ConvertVToColour(v128)	The 4 float components of v128 correspond to the native ordering of the 4 byte components of u32.
ConvertVToIntensity(v128)	The 4 float components of v128 correspond to the native ordering of the 4 byte components of u32.
GetFloatExponent(float)	Extract the exponent of the given float, accounting for the bias (i.e. the result is in the range -127 to +128).
GetFloatMantissa(float)	Extracts the mantissa of the given float.
PackFloatToFixedWidth(float)	Packs a single-precision floating point number into a floating point number with the given number of exponent and mantissa bits.
PackFloatToRgbm(v128, bool)	Pack a v128 colour value into a u32 in RGBM format.
PackFloatToSharedExponent999e5(v128)	Packs a 4-vector of single-precision floating point numbers into a "shared exponent" 999e5 format.
UnpackFloatFromFixedWidth(u32)	Unacks a single-precision floating point number from a floating point number with the given number of exponent and mantissa bits.
UnpackFloatFromSharedExponent999e5(u32)	Unpacks a 4-vector of single-precision floating point numbers from a "shared exponent" 999e5 format.
UnpackRgbmToFloat(u32)	Unpack an rgbm colour into a v128.
VNormaliseLuminance(v128)	Normalise the intensity of a colour vector to have unit luminance.

Name	Description
u32 GeoColour	An 8-bit colour.

Name	Description
const Geo::v128 g_LuminanceCoefficients = Geo::VConstruct(0.2126f, 0.7152f, 0.0722f, 0.0f)	The coefficients to calculate the luminance from a colour specified in linear sRGB space These values are determined by the CIE 1931 colour space standard and the definition of the sRGB primaries.

GEO_FORCE_INLINE float Geo::ConstructFloatPow2

public: GEO_FORCE_INLINE float ConstructFloatPow2
(
int exponent
)

Constructs a float which is exactly equal to 1x2^exponent.

public: v128 GEO_CALL ConvertColourToV
(
GeoColour colour
)

The 4 float components of v128 correspond to the native ordering of the 4 byte components of u32.

public: GeoColour GEO_CALL ConvertVToColour
(
v128 colour
)

The 4 float components of v128 correspond to the native ordering of the 4 byte components of u32.

public: float GEO_CALL ConvertVToIntensity
(
v128 colour
)

The 4 float components of v128 correspond to the native ordering of the 4 byte components of u32.

public: GEO_FORCE_INLINE int GetFloatExponent
(
float f
)

Extract the exponent of the given float, accounting for the bias (i.e. the result is in the range -127 to +128).

public: GEO_FORCE_INLINE u32 GetFloatMantissa
(
float f
)

Extracts the mantissa of the given float.

public: GEO_FORCE_INLINE u32 PackFloatToFixedWidth
(
float in
)

Packs a single-precision floating point number into a floating point number with the given number of exponent and mantissa bits.

public: GEO_FORCE_INLINE u32 PackFloatToRgbm
(
v128 inputValue,
bool isRgbaByteOrder
)

Pack a v128 colour value into a u32 in RGBM format.

public: GEO_FORCE_INLINE u32 PackFloatToSharedExponent999e5
(
v128 colour
)

Packs a 4-vector of single-precision floating point numbers into a "shared exponent" 999e5 format.

public: GEO_FORCE_INLINE float UnpackFloatFromFixedWidth
(
u32 in
)

Unacks a single-precision floating point number from a floating point number with the given number of exponent and mantissa bits.

public: GEO_FORCE_INLINE v128 UnpackFloatFromSharedExponent999e5
(
u32 colour
)

Unpacks a 4-vector of single-precision floating point numbers from a "shared exponent" 999e5 format.

public: GEO_FORCE_INLINE v128 UnpackRgbmToFloat
(
u32 rgbm
)

Unpack an rgbm colour into a v128.

public: v128 VNormaliseLuminance
(
v128 colour
)

Normalise the intensity of a colour vector to have unit luminance.

If colour has no luminance (black, or infs/nans) then this returns black The alpha is always preserved.