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Enlighten API 3.10 Documentation
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  • Modules
    • module Enlighten
    • module Infrastructure (GeoBase)
    • module Infrastructure (GeoCore)
      • module 3DPlane
      • module Colours
      • module Containers
      • module Endian Conversion
      • module Half Precision Scalars
      • module Maths
      • module Matrices
      • module Object Lifetime
      • module Quaternions
      • module Scalars
      • module Serialisation
      • module Simple CPU texture formats.
      • module Triangle Rasteriser
      • module Vectors
  • Namespaces
  • Notes
    Calendars
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module Half Precision Scalars

    This is the documentation for Enlighten.

    module Half Precision Scalars

    Nov 21, 2019

    Classes

    Name Description
    Geo::GeoHalf

    Convenience value type for a half float.

    Variables

    Name Description
    const float g_MaxNegHalfFloat = -65504.0f

    Largest representable negative half-float (=-(2 - 2^-10) * 2^15)

    const float g_MaxPosHalfFloat = 65504.0f

    Largest representable positive half-float (=(2 - 2^-10) * 2^15)

    Functions

    Name Description
    ConvertFloatToHalf(float)

    Convert a float to a half.

    ConvertFloatToHalfArray(Geo::u16 *, const float *, Geo::u32)

    Convert an array of floats to an array of halves.

    ConvertHalfToFloat(Geo::u16)

    Convert a half to a float.

    ConvertHalfToFloatArray(const Geo::u16 *, float *, Geo::u32)

    Convert an array of halves to an array of floats.

    ConvertV128ToHalfVectorArray(Geo::u64 *, const Geo::v128 *, Geo::u32)

    Convert an array of v128s to an array of half vectors.

    HalfVectorToV128(const Geo::u16 *)

    Convert a 4-element array of half floats to a v128.

    HalfVectorToV128_Portable(const Geo::u16 *)

    Convert a 4-element array of half floats to a v128.

    V128ToHalfVector(Geo::v128, Geo::u16 *)

    Convert a v128 to a 4-element array of half floats.

    V128ToHalfVector_Portable(Geo::v128, Geo::u16 *)

    Convert a v128 to a 4-element array of half floats.


    Geo::u16 GEO_CALL Geo::ConvertFloatToHalf

    public: Geo::u16GEO_CALL ConvertFloatToHalf
    (
        float value
    )

    Convert a float to a half.

    Currently using the portable implementation on all platforms.


    void GEO_CALL Geo::ConvertFloatToHalfArray

    public: void GEO_CALL ConvertFloatToHalfArray
    (
        Geo::u16 * halves,
        const float * floats,
        Geo::u32 count
    )

    Convert an array of floats to an array of halves.

    On SSE platforms a faster implementation is used if:

    • halves is 8-byte aligned.

    • floats is 16-byte aligned.

    • count is a multiple of 4.


    float GEO_CALL Geo::ConvertHalfToFloat

    public: float GEO_CALL ConvertHalfToFloat
    (
        Geo::u16 value
    )

    Convert a half to a float.

    Currently using the portable implementation on all platforms.


    void GEO_CALL Geo::ConvertHalfToFloatArray

    public: void GEO_CALL ConvertHalfToFloatArray
    (
        const Geo::u16 * halves,
        float * floats,
        Geo::u32 count
    )

    Convert an array of halves to an array of floats.

    Currently using the portable implementation on all platforms.


    void GEO_CALL Geo::ConvertV128ToHalfVectorArray

    public: void GEO_CALL ConvertV128ToHalfVectorArray
    (
        Geo::u64 * vHalves,
        const Geo::v128 * v,
        Geo::u32 count
    )

    Convert an array of v128s to an array of half vectors.


    GEO_FORCE_INLINE Geo::v128 GEO_CALL Geo::HalfVectorToV128

    public: GEO_FORCE_INLINEGeo::v128GEO_CALL HalfVectorToV128
    (
        const Geo::u16 * vHalf
    )

    Convert a 4-element array of half floats to a v128.

    This version acts as a switch board to the optimized versions (where available)


    Geo::v128 GEO_CALL Geo::HalfVectorToV128_Portable

    public: Geo::v128GEO_CALL HalfVectorToV128_Portable
    (
        const Geo::u16 * vHalf
    )

    Convert a 4-element array of half floats to a v128.

    Currently using the portable implementation on all platforms.


    GEO_FORCE_INLINE void GEO_CALL Geo::V128ToHalfVector

    public: GEO_FORCE_INLINE void GEO_CALL V128ToHalfVector
    (
        Geo::v128 fp32,
        Geo::u16 * vOutHalf
    )

    Convert a v128 to a 4-element array of half floats.

    This version acts as a switch board to the optimized versions (where available)


    void GEO_CALL Geo::V128ToHalfVector_Portable

    public: void GEO_CALL V128ToHalfVector_Portable
    (
        Geo::v128 fp32,
        Geo::u16 * vOutHalf
    )

    Convert a v128 to a 4-element array of half floats.

    Currently using the portable implementation on all platforms.

    , multiple selections available,
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