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- /*
- * Copyright (C) 2021 Christopher J. Howard
- *
- * This file is part of Antkeeper source code.
- *
- * Antkeeper source code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Antkeeper source code is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
- */
-
- #ifndef ANTKEEPER_GAMMA_HPP
- #define ANTKEEPER_GAMMA_HPP
-
- #include "math/vector-type.hpp"
- #include <cmath>
-
- template <typename T>
- T srgb_to_linear(const T& x)
- {
- if (x <= T(0.04045))
- {
- return x / T(12.92);
- }
-
- return std::pow((x + T(0.055)) / T(1.055), T(2.4));
- }
-
- template <typename T>
- T linear_to_srgb(const T& x)
- {
- if (x <= T(0.0031308))
- {
- return x * T(12.92);
- }
-
- return std::pow(x, T(1.0 / 2.4)) * T(1.055) - T(0.055);
- }
-
- #endif // ANTKEEPER_GAMMA_HPP
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