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https://github.com/OpenSpace/OpenSpace.git
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85 lines
3.5 KiB
GLSL
85 lines
3.5 KiB
GLSL
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2016 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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// Atmosphere Rendering Parameters
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uniform float Rg;
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uniform float Rt;
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uniform float AVERAGE_GROUND_REFLECTANCE;
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uniform float HR;
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uniform vec3 betaR;
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uniform float HM;
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uniform vec3 betaMSca;
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uniform vec3 betaMEx;
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uniform float mieG;
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const float ATM_EPSILON = 1.0;
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// const float RL = Rt + 1.0;
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// const float Rg = 6360.0;
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// const float Rt = 6420.0;
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// const float RL = 6421.0;
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// const float ATM_EPSILON = 1.0;
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// const float AVERAGE_GROUND_REFLECTANCE = 0.1;
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// // Rayleigh
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// const float HR = 8.0;
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// const vec3 betaR = vec3(5.8e-3, 1.35e-2, 3.31e-2);
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// // Mie
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// // DEFAULT
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// const float HM = 1.2;
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// const vec3 betaMSca = vec3(4e-3);
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// //const vec3 betaMSca = vec3(2e-5);
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// const vec3 betaMEx = betaMSca / 0.9;
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// const float mieG = 1.0;
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// Integration steps
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const int TRANSMITTANCE_STEPS = 500;
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const int INSCATTER_INTEGRAL_SAMPLES = 50;
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const int IRRADIANCE_INTEGRAL_SAMPLES = 32;
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const int INSCATTER_SPHERICAL_INTEGRAL_SAMPLES = 16;
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// The next values crash NVIDIA driver for Quadro K620 -- JCC
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// const int TRANSMITTANCE_INTEGRAL_SAMPLES = 1000;
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// const int INSCATTER_INTEGRAL_SAMPLES = 100;
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// const int IRRADIANCE_INTEGRAL_SAMPLES = 64;
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// const int INSCATTER_SPHERICAL_INTEGRAL_SAMPLES = 32;
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const float M_PI = 3.141592657;
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const int TRANSMITTANCE_W = 256;
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const int TRANSMITTANCE_H = 64;
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const int SKY_W = 64;
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const int SKY_H = 16;
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const int OTHER_TEXTURES_W = 64;
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const int OTHER_TEXTURES_H = 16;
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const int RES_R = 32;
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const int RES_MU = 128;
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const int RES_MU_S = 32;
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const int RES_NU = 8; |