Update GLM to latest version (0.9.9.3). This includes GLM's change of matrices no longer default initializing to the identity matrix. This commit thus also includes the update of all of LearnOpenGL's code to reflect this: all matrices are now constructor-initialized to the identity matrix where relevant.

includes/glm/ext/scalar_int_sized.hpp

@@ -0,0 +1,70 @@
+/// @ref ext_scalar_int_sized
+/// @file glm/ext/scalar_int_sized.hpp
+///
+/// @defgroup ext_scalar_int_sized GLM_EXT_scalar_int_sized
+/// @ingroup ext
+///
+/// Exposes sized signed integer scalar types.
+///
+/// Include <glm/ext/scalar_int_sized.hpp> to use the features of this extension.
+///
+/// @see ext_scalar_uint_sized
+
+#pragma once
+
+#include "../detail/setup.hpp"
+
+#if GLM_MESSAGES == GLM_ENABLE && !defined(GLM_EXT_INCLUDED)
+#	pragma message("GLM: GLM_EXT_scalar_int_sized extension included")
+#endif
+
+namespace glm{
+namespace detail
+{
+#	if GLM_HAS_EXTENDED_INTEGER_TYPE
+		typedef std::int8_t			int8;
+		typedef std::int16_t		int16;
+		typedef std::int32_t		int32;
+#	else
+		typedef char				int8;
+		typedef short				int16;
+		typedef int					int32;
+#endif//
+
+	template<>
+	struct is_int<int8>
+	{
+		enum test {value = ~0};
+	};
+
+	template<>
+	struct is_int<int16>
+	{
+		enum test {value = ~0};
+	};
+
+	template<>
+	struct is_int<int64>
+	{
+		enum test {value = ~0};
+	};
+}//namespace detail
+
+
+	/// @addtogroup ext_scalar_int_sized
+	/// @{
+
+	/// 8 bit signed integer type.
+	typedef detail::int8		int8;
+
+	/// 16 bit signed integer type.
+	typedef detail::int16		int16;
+
+	/// 32 bit signed integer type.
+	typedef detail::int32		int32;
+
+	/// 64 bit signed integer type.
+	typedef detail::int64		int64;
+
+	/// @}
+}//namespace glm