Added GTC_color, rgbToSrgb and srgbToRgb with tests

glm/gtc/color.hpp

@@ -0,0 +1,77 @@
+///////////////////////////////////////////////////////////////////////////////////
+/// 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 gtc_color
+/// @file glm/gtc/color.hpp
+/// @date 2015-02-10 / 2015-02-10
+/// @author Christophe Riccio
+///
+/// @see core (dependence)
+/// @see gtc_color (dependence)
+///
+/// @defgroup gtc_color GLM_GTC_color
+/// @ingroup gtc
+/// 
+/// @brief Allow to perform bit operations on integer values
+/// 
+/// <glm/gtc/color.hpp> need to be included to use these functionalities.
+///////////////////////////////////////////////////////////////////////////////////
+
+#pragma once
+
+// Dependencies
+#include "../detail/setup.hpp"
+#include "../detail/precision.hpp"
+#include "../exponential.hpp"
+#include "../vec3.hpp"
+#include "../vec4.hpp"
+#include <limits>
+
+#if(defined(GLM_MESSAGES) && !defined(GLM_EXT_INCLUDED))
+#	pragma message("GLM: GLM_GTC_color extension included")
+#endif
+
+namespace glm
+{
+	/// @addtogroup gtc_color
+	/// @{
+
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL vecType<T, P> rgbToSrgb(vecType<T, P> const & ColorRGB);
+
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL vecType<T, P> rgbToSrgb(vecType<T, P> const & ColorRGB, T Gamma);
+
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL vecType<T, P> srgbToRgb(vecType<T, P> const & ColorSRGB);
+
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL vecType<T, P> srgbToRgb(vecType<T, P> const & ColorSRGB, T Gamma);
+
+	/// @}
+} //namespace glm
+
+#include "color.inl"

glm/gtc/color.inl

@@ -0,0 +1,104 @@
+/////////////////////////////////////////////////////////////////////////////////////////
+/// 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 gtc_color
+/// @file glm/gtc/color.inl
+/// @date 2015-02-10 / 2015-02-10
+/// @author Christophe Riccio
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+namespace glm{
+namespace detail
+{
+	template <typename T, precision P, template <typename, precision> class vecType>
+	struct compute_rgbToSrgb
+	{
+		GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<T, P> const & ColorRGB, T InverseGamma)
+		{
+			vecType<T, P> const ClampedColor(clamp(ColorRGB, static_cast<T>(0), static_cast<T>(1)));
+
+			return mix(
+				pow(ClampedColor, vecType<T, P>(InverseGamma)) * static_cast<T>(1.055) - static_cast<T>(0.055),
+				ClampedColor * static_cast<T>(12.92),
+				lessThan(ClampedColor, vecType<T, P>(static_cast<T>(0.0031308))));
+		}
+	};
+
+	template <typename T, precision P>
+	struct compute_rgbToSrgb<T, P, tvec4>
+	{
+		GLM_FUNC_QUALIFIER static tvec4<T, P> call(tvec4<T, P> const & ColorRGB, T InverseGamma)
+		{
+			return tvec4<T, P>(compute_rgbToSrgb<T, P, tvec3>::call(tvec3<T, P>(ColorRGB), InverseGamma), ColorRGB.a);
+		}
+	};
+
+	template <typename T, precision P, template <typename, precision> class vecType>
+	struct compute_srgbToRgb
+	{
+		GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<T, P> const & ColorSRGB, T Gamma)
+		{
+			return mix(
+				pow((ColorSRGB + static_cast<T>(0.055)) * static_cast<T>(0.94786729857819905213270142180095), vecType<T, P>(Gamma)),
+				ColorSRGB * static_cast<T>(0.07739938080495356037151702786378),
+				lessThanEqual(ColorSRGB, vecType<T, P>(static_cast<T>(0.04045))));
+		}
+	};
+
+	template <typename T, precision P>
+	struct compute_srgbToRgb<T, P, tvec4>
+	{
+		GLM_FUNC_QUALIFIER static tvec4<T, P> call(tvec4<T, P> const & ColorSRGB, T Gamma)
+		{
+			return tvec4<T, P>(compute_srgbToRgb<T, P, tvec3>::call(tvec3<T, P>(ColorSRGB), Gamma), ColorSRGB.a);
+		}
+	};
+}//namespace detail
+
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<T, P> rgbToSrgb(vecType<T, P> const & ColorRGB)
+	{
+		return detail::compute_rgbToSrgb<T, P, vecType>::call(ColorRGB, static_cast<T>(0.41666));
+	}
+
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<T, P> rgbToSrgb(vecType<T, P> const & ColorRGB, T Gamma)
+	{
+		return detail::compute_rgbToSrgb<T, P, vecType>::call(ColorRGB, static_cast<T>(1) / Gamma);
+	}
+
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<T, P> srgbToRgb(vecType<T, P> const & ColorSRGB)
+	{
+		return detail::compute_srgbToRgb<T, P, vecType>::call(ColorSRGB, static_cast<T>(2.4));
+	}
+	
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<T, P> srgbToRgb(vecType<T, P> const & ColorSRGB, T Gamma)
+	{
+		return detail::compute_srgbToRgb<T, P, vecType>::call(ColorSRGB, Gamma);
+	}
+}//namespace glm

readme.txt

@@ -66,6 +66,9 @@ http://glm.g-truc.net/glm.pdf
 ================================================================================
 GLM 0.9.7.0: 2015-XX-XX
 --------------------------------------------------------------------------------
+Features:
+- Added GTC_color: rgbToSrgb and srgbToRgb functions
+
 Improvements:
 - Changed usage of __has_include to support Intel compiler #307
 

test/gtc/CMakeLists.txt

@@ -1,4 +1,5 @@
 glmCreateTestGTC(gtc_bitfield)
+glmCreateTestGTC(gtc_color)
 glmCreateTestGTC(gtc_constants)
 glmCreateTestGTC(gtc_epsilon)
 glmCreateTestGTC(gtc_integer)

test/gtc/gtc_color.cpp

@@ -0,0 +1,67 @@
+///////////////////////////////////////////////////////////////////////////////////
+/// 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.
+///
+/// @file test/gtc/gtc_color.cpp
+/// @date 2015-02-10 / 2015-02-10
+/// @author Christophe Riccio
+///////////////////////////////////////////////////////////////////////////////////
+
+#include <glm/gtc/color.hpp>
+#include <glm/gtc/epsilon.hpp>
+#include <glm/gtc/constants.hpp>
+
+namespace srgb
+{
+	int test()
+	{
+		int Error(0);
+
+		glm::vec4 const ColorSourceRGB(1.0, 0.5, 0.0, 1.0);
+
+		{
+			glm::vec4 const ColorSRGB = glm::rgbToSrgb(ColorSourceRGB);
+			glm::vec4 const ColorRGB = glm::srgbToRgb(ColorSRGB);
+			Error += glm::all(glm::epsilonEqual(ColorSourceRGB, ColorRGB, 0.00001f)) ? 0 : 1;
+		}
+
+		{
+			glm::vec4 const ColorSRGB = glm::rgbToSrgb(ColorSourceRGB, 2.8f);
+			glm::vec4 const ColorRGB = glm::srgbToRgb(ColorSRGB, 2.8f);
+			Error += glm::all(glm::epsilonEqual(ColorSourceRGB, ColorRGB, 0.00001f)) ? 0 : 1;
+		}
+
+		return Error;
+	}
+}//namespace srgb
+
+int main()
+{
+	int Error(0);
+
+	Error += srgb::test();
+
+	return Error;
+}