RAII for glVertex and glBuffer

1 files changed, 48 insertions, 0 deletions

diff --git a/lib/glBuffers.h b/lib/glBuffers.h
new file mode 100644
index 0000000..e91293c
--- /dev/null
+++ b/lib/glBuffers.h
@@ -0,0 +1,48 @@
+#ifndef GLBUFFERS_H
+#define GLBUFFERS_H
+
+#include <GL/glew.h>
+#include <array>
+#include <cstddef>
+#include <special_members.hpp>
+
+class glBuffersBase {
+protected:
+	static void gen(GLsizei, GLuint *);
+	static void del(GLsizei, const GLuint *);
+};
+
+template<size_t N> class glBuffers : glBuffersBase {
+public:
+	glBuffers()
+	{
+		gen(N, ids.data());
+	}
+
+	~glBuffers()
+	{
+		del(N, ids.data());
+	}
+
+	NO_COPY(glBuffers);
+	NO_MOVE(glBuffers);
+
+	// NOLINTNEXTLINE(hicpp-explicit-conversions)
+	operator GLuint() const
+	{
+		static_assert(N == 1, "Implicit cast only if N == 1");
+		return ids.front();
+	}
+
+	auto
+	operator[](size_t n) const
+	{
+		return ids[n];
+	}
+
+private:
+	std::array<GLuint, N> ids {};
+};
+using glBuffer = glBuffers<1>;
+
+#endif