1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556 |
- /*
- Minetest
- Copyright (C) 2021 x2048, Dmitry Kostenko <codeforsmile@gmail.com>
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
- This program 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 Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
- #pragma once
- /**
- * Parameters for automatic exposure compensation
- *
- * Automatic exposure compensation uses the following equation:
- *
- * wanted_exposure = 2^exposure_correction / clamp(observed_luminance, 2^luminance_min, 2^luminance_max)
- *
- */
- struct AutoExposure
- {
- /// @brief Minimum boundary for computed luminance
- float luminance_min;
- /// @brief Maximum boundary for computed luminance
- float luminance_max;
- /// @brief Luminance bias. Higher values make the scene darker, can be negative.
- float exposure_correction;
- /// @brief Speed of transition from dark to bright scenes
- float speed_dark_bright;
- /// @brief Speed of transition from bright to dark scenes
- float speed_bright_dark;
- /// @brief Power value for center-weighted metering. Value of 1.0 measures entire screen uniformly
- float center_weight_power;
- AutoExposure();
- };
- /** Describes ambient light settings for a player
- */
- struct Lighting
- {
- AutoExposure exposure;
- float shadow_intensity {0.0f};
- float saturation {1.0f};
- };
|