[Feat] (...): Add GLES Backend.

include/glm/gtx/scalar_relational.hpp

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+/// @ref gtx_scalar_relational
+/// @file glm/gtx/scalar_relational.hpp
+///
+/// @see core (dependence)
+///
+/// @defgroup gtx_scalar_relational GLM_GTX_scalar_relational
+/// @ingroup gtx
+///
+/// Include <glm/gtx/scalar_relational.hpp> to use the features of this extension.
+///
+/// Extend a position from a source to a position at a defined length.
+
+#pragma once
+
+// Dependency:
+#include "../glm.hpp"
+
+#ifndef GLM_ENABLE_EXPERIMENTAL
+#	error "GLM: GLM_GTX_scalar_relational is an experimental extension and may change in the future. Use #define GLM_ENABLE_EXPERIMENTAL before including it, if you really want to use it."
+#elif GLM_MESSAGES == GLM_ENABLE && !defined(GLM_EXT_INCLUDED)
+#	pragma message("GLM: GLM_GTX_scalar_relational extension included")
+#endif
+
+namespace glm
+{
+	/// @addtogroup gtx_scalar_relational
+	/// @{
+
+
+
+	/// @}
+}//namespace glm
+
+#include "scalar_relational.inl"