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Add gfx::to_srgb/to_linear for colors

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This commit is contained in:
Nikita Lisitsa 2022-05-16 23:23:50 +03:00
parent 3de591394d
commit 565ab68682
1 changed files with 27 additions and 0 deletions
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27
libs/gfx/include/psemek/gfx/color.hpp
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@ -75,6 +75,33 @@ namespace psemek::gfx
return to_coloru8(geom::lerp(to_colorf(c0), to_colorf(c1), t));
}
template <std::size_t N>
auto to_srgb(geom::vector<float, N> const & c, float g = 1.f / 2.2f)
{
geom::vector<float, N> r = c;
for (std::size_t i = 0; i < std::min<std::size_t>(3, N); ++i)
r[i] = std::pow(r[i], g);
return r;
}
template <std::size_t N>
auto to_srgb(geom::vector<std::uint8_t, N> const & c, float g = 1.f / 2.2f)
{
return to_coloru8(to_srgb(to_colorf(c), g));
}
template <std::size_t N>
auto to_srgb(geom::vector<std::uint16_t, N> const & c, float g = 1.f / 2.2f)
{
return to_coloru16(to_srgb(to_colorf(c), g));
}
template <typename T, std::size_t N>
auto to_linear(geom::vector<T, N> const & c, float g = 1.f / 2.2f)
{
return to_srgb(c, 1.f / g);
}
struct generic_color
{
color_4f c;