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diff --git a/inc/glm/gtx/color_space_YCoCg.inl b/inc/glm/gtx/color_space_YCoCg.inl
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+///////////////////////////////////////////////////////////////////////////////////
+/// OpenGL Mathematics (glm.g-truc.net)
+///
+/// Copyright (c) 2005 - 2015 G-Truc Creation (www.g-truc.net)
+/// Permission is hereby granted, free of charge, to any person obtaining a copy
+/// of this software and associated documentation files (the "Software"), to deal
+/// in the Software without restriction, including without limitation the rights
+/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+/// copies of the Software, and to permit persons to whom the Software is
+/// furnished to do so, subject to the following conditions:
+/// 
+/// The above copyright notice and this permission notice shall be included in
+/// all copies or substantial portions of the Software.
+/// 
+/// Restrictions:
+///		By making use of the Software for military purposes, you choose to make
+///		a Bunny unhappy.
+/// 
+/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+/// THE SOFTWARE.
+///
+/// @ref gtx_color_space_YCoCg
+/// @file glm/gtx/color_space_YCoCg.inl
+/// @date 2008-10-28 / 2011-06-07
+/// @author Christophe Riccio
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+namespace glm
+{
+	template <typename T, precision P>
+	GLM_FUNC_QUALIFIER tvec3<T, P> rgb2YCoCg
+	(
+		tvec3<T, P> const & rgbColor
+	)
+	{
+		tvec3<T, P> result;
+		result.x/*Y */ =   rgbColor.r / T(4) + rgbColor.g / T(2) + rgbColor.b / T(4);
+		result.y/*Co*/ =   rgbColor.r / T(2) + rgbColor.g * T(0) - rgbColor.b / T(2);
+		result.z/*Cg*/ = - rgbColor.r / T(4) + rgbColor.g / T(2) - rgbColor.b / T(4);
+		return result;
+	}
+
+	template <typename T, precision P>
+	GLM_FUNC_QUALIFIER tvec3<T, P> rgb2YCoCgR
+	(
+		tvec3<T, P> const & rgbColor
+	)
+	{
+		tvec3<T, P> result;
+		result.x/*Y */ = rgbColor.g / T(2) + (rgbColor.r + rgbColor.b) / T(4);
+		result.y/*Co*/ = rgbColor.r - rgbColor.b;
+		result.z/*Cg*/ = rgbColor.g - (rgbColor.r + rgbColor.b) / T(2);
+		return result;
+	}
+
+	template <typename T, precision P>
+	GLM_FUNC_QUALIFIER tvec3<T, P> YCoCg2rgb
+	(
+		tvec3<T, P> const & YCoCgColor
+	)
+	{
+		tvec3<T, P> result;
+		result.r = YCoCgColor.x + YCoCgColor.y - YCoCgColor.z;
+		result.g = YCoCgColor.x                + YCoCgColor.z;
+		result.b = YCoCgColor.x - YCoCgColor.y - YCoCgColor.z;
+		return result;
+	}
+
+	template <typename T, precision P>
+	GLM_FUNC_QUALIFIER tvec3<T, P> YCoCgR2rgb
+	(
+		tvec3<T, P> const & YCoCgRColor
+	)
+	{
+		tvec3<T, P> result;
+		T tmp = YCoCgRColor.x - (YCoCgRColor.z / T(2));
+		result.g = YCoCgRColor.z + tmp;
+		result.b = tmp - (YCoCgRColor.y / T(2));
+		result.r = result.b + YCoCgRColor.y;
+		return result;
+	}
+}//namespace glm