KoColorTransferFunctions< Arch > Struct Template Reference

#include <KoColorTransferFunctions.h>

Public Types
using	float_v = typename KoStreamedMath<Arch>::float_v

Static Public Member Functions
static ALWAYS_INLINE void	removeHLGCurve (float_v &x) noexcept
static ALWAYS_INLINE void	removeSmpte2048Curve (float_v &x) noexcept
static ALWAYS_INLINE void	removeSMPTE_ST_428Curve (float_v &x) noexcept

Detailed Description

template<typename Arch>
struct KoColorTransferFunctions< Arch >

Definition at line 159 of file KoColorTransferFunctions.h.

Member Typedef Documentation

float_v

template<typename Arch >

using KoColorTransferFunctions< Arch >::float_v = typename KoStreamedMath<Arch>::float_v

Definition at line 160 of file KoColorTransferFunctions.h.

Member Function Documentation

removeHLGCurve()

template<typename Arch >

static ALWAYS_INLINE void KoColorTransferFunctions< Arch >::removeHLGCurve ( float_v & x )

inlinestaticnoexcept

Definition at line 177 of file KoColorTransferFunctions.h.

    {
        constexpr float a = 0.17883277f;
        constexpr float b = 0.28466892f;
        constexpr float c = 0.55991073f;
 
        constexpr float scale = 3.7743f;
 
        const float_v x1 = x * x * (1.f / 3.0f);
        const float_v x2 =
            (xsimd::exp((x - c) * (1.f / a)) + b) * (1.f / 12.0f);
        x = xsimd::select(x <= float_v(0.5f), x1, x2) * scale;
    }

removeSmpte2048Curve()

template<typename Arch >

static ALWAYS_INLINE void KoColorTransferFunctions< Arch >::removeSmpte2048Curve ( float_v & x )

inlinestaticnoexcept

Definition at line 162 of file KoColorTransferFunctions.h.

    {
        constexpr float m1_r = 4096.0f * 4.0f / 2610.0f;
        constexpr float m2_r = 4096.0f / 2523.0f / 128.0f;
        constexpr float a1 = 3424.0f / 4096.0f;
        constexpr float c2 = 2413.0f / 4096.0f * 32.0f;
        constexpr float c3 = 2392.0f / 4096.0f * 32.0f;
 
        const float_v x_p = xsimd::pow(x, float_v(m2_r));
        const float_v res =
            xsimd::pow(xsimd::max(float_v(0.0f), x_p - a1) / (c2 - c3 * x_p),
                       float_v(m1_r));
        x = res * 125.0f;
    }

References xsimd::max().

removeSMPTE_ST_428Curve()

template<typename Arch >

static ALWAYS_INLINE void KoColorTransferFunctions< Arch >::removeSMPTE_ST_428Curve ( float_v & x )

inlinestaticnoexcept

Definition at line 191 of file KoColorTransferFunctions.h.

    {
        x = (52.37f / 48.0f) * xsimd::pow(x, float_v(2.6f));
    }

---

The documentation for this struct was generated from the following file:

• libs/pigment/KoColorTransferFunctions.h