Add RGB565 class

openVulkanoCpp/Math/RGB565.hpp

@@ -0,0 +1,46 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include "Math/Math.hpp"
+
+namespace OpenVulkano::Math
+{
+	class RGB565
+	{
+		uint16_t Make5(uint8_t val)
+		{
+			return val * 31.0f / 255.0f;
+		}
+
+		uint16_t Make6(uint8_t val)
+		{
+			return val * 63.0f / 255.0f;
+		}
+
+	public:
+		union
+		{
+			uint16_t value;
+			struct
+			{
+				uint16_t b : 5;
+				uint16_t g : 6;
+				uint16_t r : 5;
+			};
+		};
+
+		RGB565(Math::Vector4uc color = {0, 0, 0, 1})
+				: b(Make5(color.b))
+				, g(Make6(color.g))
+				, r(Make5(color.r))
+		{
+		}
+	};
+
+	static_assert(sizeof(RGB565) == 2);
+}