refactor(graphics)

src/common/alignment.h

@@ -0,0 +1,25 @@
+// SPDX-FileCopyrightText: 2014 Jannik Vogel <email@jannikvogel.de>
+// SPDX-License-Identifier: CC0-1.0
+
+#pragma once
+
+#include <cstddef>
+#include <type_traits>
+
+namespace Common {
+
+template <typename T>
+[[nodiscard]] constexpr T AlignUp(T value, std::size_t size) {
+	static_assert(std::is_unsigned_v<T>, "T must be an unsigned value.");
+	auto mod{static_cast<T>(value % size)};
+	value -= mod;
+	return static_cast<T>(mod == T{0} ? value : value + size);
+}
+
+template <typename T>
+[[nodiscard]] constexpr T AlignDown(T value, std::size_t size) {
+	static_assert(std::is_unsigned_v<T>, "T must be an unsigned value.");
+	return static_cast<T>(value - value % size);
+}
+
+} // namespace Common