From a66c186e81ba88b8ce5a9ef041e3839454dd70ab Mon Sep 17 00:00:00 2001
From: Jannik Vogel <email@jannikvogel.de>
Date: Fri, 11 Mar 2016 16:15:36 +0100
Subject: PICA: Align vertex attributes

---
 src/common/CMakeLists.txt |  1 +
 src/common/alignment.h    | 22 ++++++++++++++++++++++
 2 files changed, 23 insertions(+)
 create mode 100644 src/common/alignment.h

(limited to 'src/common')

diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt
index 959084cdf..1c9be718f 100644
--- a/src/common/CMakeLists.txt
+++ b/src/common/CMakeLists.txt
@@ -22,6 +22,7 @@ set(SRCS
             )
 
 set(HEADERS
+            alignment.h
             assert.h
             bit_field.h
             bit_set.h
diff --git a/src/common/alignment.h b/src/common/alignment.h
new file mode 100644
index 000000000..b77da4a92
--- /dev/null
+++ b/src/common/alignment.h
@@ -0,0 +1,22 @@
+// This file is under the public domain.
+
+#pragma once
+
+#include <cstddef>
+#include <type_traits>
+
+namespace Common {
+
+template <typename T>
+constexpr T AlignUp(T value, size_t size) {
+    static_assert(std::is_unsigned<T>::value, "T must be an unsigned value.");
+    return static_cast<T>(value + (size - value % size) % size);
+}
+
+template <typename T>
+constexpr T AlignDown(T value, size_t size) {
+    static_assert(std::is_unsigned<T>::value, "T must be an unsigned value.");
+    return static_cast<T>(value - value % size);
+}
+
+} // namespace Common
-- 
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