Add OpenGL array class

libs/gfx/include/psemek/gfx/array.hpp

@@ -0,0 +1,34 @@
+#pragma once
+
+#include <psemek/gfx/gl.hpp>
+
+#include <cstddef>
+
+namespace psemek::gfx
+{
+
+	struct array
+	{
+		array();
+		array(array &&);
+		array & operator = (array &&);
+		~array();
+
+		array(array const &) = delete;
+		array & operator = (array const &) = delete;
+
+		static array null();
+
+		GLuint id() const { return id_; }
+
+		void bind() const;
+
+		void reset();
+
+	private:
+		GLuint id_;
+
+		explicit array(std::nullptr_t);
+	};
+
+}

libs/gfx/source/array.cpp

@@ -0,0 +1,54 @@
+#include <psemek/gfx/array.hpp>
+
+#include <utility>
+
+namespace psemek::gfx
+{
+
+	array::array()
+	{
+		gl::GenVertexArrays(1, &id_);
+	}
+
+	array::array(array && other)
+		: id_{other.id_}
+	{
+		other.id_ = 0;
+	}
+
+	array & array::operator = (array && other)
+	{
+		if (this == &other) return *this;
+
+		reset();
+		std::swap(id_, other.id_);
+		return *this;
+	}
+
+	array::~array()
+	{
+		reset();
+	}
+
+	array array::null()
+	{
+		return array(nullptr);
+	}
+
+	void array::bind() const
+	{
+		gl::BindVertexArray(id_);
+	}
+
+	void array::reset()
+	{
+		if (id_ != 0)
+			gl::DeleteVertexArrays(1, &id_);
+		id_ = 0;
+	}
+
+	array::array(std::nullptr_t)
+		: id_{0}
+	{}
+
+}