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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program 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 2
* 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 General Public License for more details.
*
* You should have received a copy of the GNU 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.
*
* Contributor(s): zaghaghi
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/render/intern/include/sunsky.h
* \ingroup render
*/
#ifndef __SUNSKY_H__
#define __SUNSKY_H__
// #define SPECTRUM_MAX_COMPONENTS 100
typedef struct SunSky {
short effect_type, skyblendtype, sky_colorspace;
float turbidity;
float theta, phi;
float toSun[3];
/*float sunSpectralRaddata[SPECTRUM_MAX_COMPONENTS];*/
float sunSolidAngle;
float zenith_Y, zenith_x, zenith_y;
float perez_Y[5], perez_x[5], perez_y[5];
/* suggested by glome in patch [#8063] */
float horizon_brightness;
float spread;
float sun_brightness;
float sun_size;
float backscattered_light;
float skyblendfac;
float sky_exposure;
float atm_HGg;
float atm_SunIntensity;
float atm_InscatteringMultiplier;
float atm_ExtinctionMultiplier;
float atm_BetaRayMultiplier;
float atm_BetaMieMultiplier;
float atm_DistanceMultiplier;
float atm_BetaRay[3];
float atm_BetaDashRay[3];
float atm_BetaMie[3];
float atm_BetaDashMie[3];
float atm_BetaRM[3];
} SunSky;
void InitSunSky(struct SunSky *sunsky, float turb, const float toSun[3], float horizon_brightness,
float spread, float sun_brightness, float sun_size, float back_scatter,
float skyblendfac, short skyblendtype, float sky_exposure, float sky_colorspace);
void GetSkyXYZRadiance(struct SunSky *sunsky, float theta, float phi, float color_out[3]);
void GetSkyXYZRadiancef(struct SunSky *sunsky, const float varg[3], float color_out[3]);
void InitAtmosphere(struct SunSky *sunSky, float sun_intens, float mief, float rayf, float inscattf, float extincf, float disf);
void AtmospherePixleShader(struct SunSky *sunSky, float view[3], float s, float rgb[3]);
void ClipColor(float c[3]);
#endif /*__SUNSKY_H__*/
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