From d82541fcea40efadaef63fef5f4a76c3fea5defe Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sat, 27 Jan 2024 11:32:16 +0000
Subject: Support constructing a glContainer from a collection of the same type

---
 lib/glContainer.h         | 6 ++++++
 test/test-glContainer.cpp | 9 +++++++++
 2 files changed, 15 insertions(+)

diff --git a/lib/glContainer.h b/lib/glContainer.h
index ce88916..2ccc1c2 100644
--- a/lib/glContainer.h
+++ b/lib/glContainer.h
@@ -38,6 +38,12 @@ public:
 		clear();
 	}
 
+	template<template<typename, typename...> typename C> explicit glContainer(const C<T> & src)
+	{
+		reserve(src.size());
+		std::copy(src.begin(), src.end(), std::back_inserter(*this));
+	}
+
 	DEFAULT_MOVE_NO_COPY(glContainer);
 
 	[[nodiscard]] iterator
diff --git a/test/test-glContainer.cpp b/test/test-glContainer.cpp
index 0597470..ccf3b90 100644
--- a/test/test-glContainer.cpp
+++ b/test/test-glContainer.cpp
@@ -305,6 +305,15 @@ BOOST_AUTO_TEST_CASE(iter_compare)
 
 BOOST_AUTO_TEST_SUITE_END();
 
+BOOST_AUTO_TEST_CASE(create_copy_source, *boost::unit_test::timeout(1))
+{
+	const std::vector src {4, 6, 2, 4, 6, 0};
+	glContainer dst {src};
+	static_assert(std::is_same_v<decltype(src)::value_type, decltype(dst)::value_type>);
+	dst.unmap();
+	BOOST_CHECK_EQUAL_COLLECTIONS(src.begin(), src.end(), dst.begin(), dst.end());
+}
+
 struct C {
 	int x;
 	float y;
-- 
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