1 files changed, 45 insertions, 0 deletions

diff --git a/external/include/glm/gtx/normalize_dot.hpp b/external/include/glm/gtx/normalize_dot.hpp
new file mode 100644
index 0000000..de650d3
--- /dev/null
+++ b/external/include/glm/gtx/normalize_dot.hpp
@@ -0,0 +1,45 @@
+/// @ref gtx_normalize_dot
+/// @file glm/gtx/normalize_dot.hpp
+///
+/// @see core (dependence)
+/// @see gtx_fast_square_root (dependence)
+///
+/// @defgroup gtx_normalize_dot GLM_GTX_normalize_dot
+/// @ingroup gtx
+///
+/// @brief Dot product of vectors that need to be normalize with a single square root.
+///
+/// <glm/gtx/normalized_dot.hpp> need to be included to use these functionalities.
+
+#pragma once
+
+// Dependency:
+#include "../gtx/fast_square_root.hpp"
+
+#if GLM_MESSAGES == GLM_MESSAGES_ENABLED && !defined(GLM_EXT_INCLUDED)
+#	pragma message("GLM: GLM_GTX_normalize_dot extension included")
+#endif
+
+namespace glm
+{
+	/// @addtogroup gtx_normalize_dot
+	/// @{
+
+	/// Normalize parameters and returns the dot product of x and y.
+	/// It's faster that dot(normalize(x), normalize(y)).
+	///
+	/// @see gtx_normalize_dot extension.
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL T normalizeDot(vecType<T, P> const & x, vecType<T, P> const & y);
+
+	/// Normalize parameters and returns the dot product of x and y.
+	/// Faster that dot(fastNormalize(x), fastNormalize(y)).
+	///
+	/// @see gtx_normalize_dot extension.
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL T fastNormalizeDot(vecType<T, P> const & x, vecType<T, P> const & y);
+
+	/// @}
+}//namespace glm
+
+#include "normalize_dot.inl"