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/// @ref gtc_color_space
/// @file glm/gtc/color_space.inl
namespace glm{
namespace detail
{
template <typename T, precision P, template <typename, precision> class vecType>
struct compute_rgbToSrgb
{
GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<T, P> const& ColorRGB, T GammaCorrection)
{
vecType<T, P> const ClampedColor(clamp(ColorRGB, static_cast<T>(0), static_cast<T>(1)));
return mix(
pow(ClampedColor, vecType<T, P>(GammaCorrection)) * static_cast<T>(1.055) - static_cast<T>(0.055),
ClampedColor * static_cast<T>(12.92),
lessThan(ClampedColor, vecType<T, P>(static_cast<T>(0.0031308))));
}
};
template <typename T, precision P>
struct compute_rgbToSrgb<T, P, tvec4>
{
GLM_FUNC_QUALIFIER static tvec4<T, P> call(tvec4<T, P> const& ColorRGB, T GammaCorrection)
{
return tvec4<T, P>(compute_rgbToSrgb<T, P, tvec3>::call(tvec3<T, P>(ColorRGB), GammaCorrection), ColorRGB.w);
}
};
template <typename T, precision P, template <typename, precision> class vecType>
struct compute_srgbToRgb
{
GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<T, P> const& ColorSRGB, T Gamma)
{
return mix(
pow((ColorSRGB + static_cast<T>(0.055)) * static_cast<T>(0.94786729857819905213270142180095), vecType<T, P>(Gamma)),
ColorSRGB * static_cast<T>(0.07739938080495356037151702786378),
lessThanEqual(ColorSRGB, vecType<T, P>(static_cast<T>(0.04045))));
}
};
template <typename T, precision P>
struct compute_srgbToRgb<T, P, tvec4>
{
GLM_FUNC_QUALIFIER static tvec4<T, P> call(tvec4<T, P> const& ColorSRGB, T Gamma)
{
return tvec4<T, P>(compute_srgbToRgb<T, P, tvec3>::call(tvec3<T, P>(ColorSRGB), Gamma), ColorSRGB.w);
}
};
}//namespace detail
template <typename T, precision P, template <typename, precision> class vecType>
GLM_FUNC_QUALIFIER vecType<T, P> convertLinearToSRGB(vecType<T, P> const& ColorLinear)
{
return detail::compute_rgbToSrgb<T, P, vecType>::call(ColorLinear, static_cast<T>(0.41666));
}
template <typename T, precision P, template <typename, precision> class vecType>
GLM_FUNC_QUALIFIER vecType<T, P> convertLinearToSRGB(vecType<T, P> const& ColorLinear, T Gamma)
{
return detail::compute_rgbToSrgb<T, P, vecType>::call(ColorLinear, static_cast<T>(1) / Gamma);
}
template <typename T, precision P, template <typename, precision> class vecType>
GLM_FUNC_QUALIFIER vecType<T, P> convertSRGBToLinear(vecType<T, P> const& ColorSRGB)
{
return detail::compute_srgbToRgb<T, P, vecType>::call(ColorSRGB, static_cast<T>(2.4));
}
template <typename T, precision P, template <typename, precision> class vecType>
GLM_FUNC_QUALIFIER vecType<T, P> convertSRGBToLinear(vecType<T, P> const& ColorSRGB, T Gamma)
{
return detail::compute_srgbToRgb<T, P, vecType>::call(ColorSRGB, Gamma);
}
}//namespace glm
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