From bb1df4599d4bf08824bf9fac668f7363443cb4d5 Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Fri, 2 Apr 2021 11:04:50 +0300
Subject: [PATCH] Add coloru16 converters

---
 libs/gfx/include/psemek/gfx/color.hpp | 36 +++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/libs/gfx/include/psemek/gfx/color.hpp b/libs/gfx/include/psemek/gfx/color.hpp
index 74c5b37a..5ff8507c 100644
--- a/libs/gfx/include/psemek/gfx/color.hpp
+++ b/libs/gfx/include/psemek/gfx/color.hpp
@@ -24,6 +24,24 @@ namespace psemek::gfx
 		return r;
 	}
 
+	template <std::size_t N>
+	auto to_colorf(geom::vector<std::uint16_t, N> const & c)
+	{
+		geom::vector<float, N> r;
+		for (std::size_t i = 0; i < N; ++i)
+			r[i] = c[i] / 65535.f;
+		return r;
+	}
+
+	template <std::size_t N>
+	auto to_coloru8(geom::vector<std::uint16_t, N> const & c)
+	{
+		geom::vector<std::uint8_t, N> r;
+		for (std::size_t i = 0; i < N; ++i)
+			r[i] = (static_cast<std::uint32_t>(c[i]) * 255) / 65535;
+		return r;
+	}
+
 	template <std::size_t N>
 	auto to_coloru8(geom::vector<float, N> const & c)
 	{
@@ -33,6 +51,24 @@ namespace psemek::gfx
 		return r;
 	}
 
+	template <std::size_t N>
+	auto to_coloru16(geom::vector<std::uint8_t, N> const & c)
+	{
+		geom::vector<std::uint16_t, N> r;
+		for (std::size_t i = 0; i < N; ++i)
+			r[i] = (static_cast<std::uint32_t>(c[i]) * 65535) / 255;
+		return r;
+	}
+
+	template <std::size_t N>
+	auto to_coloru16(geom::vector<float, N> const & c)
+	{
+		geom::vector<std::uint16_t, N> r;
+		for (std::size_t i = 0; i < N; ++i)
+			r[i] = static_cast<std::uint16_t>(std::round(geom::clamp(c[i] * 65535.f, {0.f, 65535.f})));
+		return r;
+	}
+
 	template <std::size_t N>
 	auto lerp(geom::vector<std::uint8_t, N> const & c0, geom::vector<std::uint8_t, N> const & c1, float t)
 	{