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/**
* @file llatmosphere.h
* @brief LLAtmosphere class for integration with libatmosphere
*
* $LicenseInfo:firstyear=2018&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2018, Linden Research, Inc.
*
* This library 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;
* version 2.1 of the License only.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_ATMOSPHERE_H
#define LL_ATMOSPHERE_H
#include "llglheaders.h"
#include "llgltexture.h"
#include "libatmosphere/model.h"
typedef std::vector<atmosphere::DensityProfileLayer> DensityProfile;
class AtmosphericModelSettings
{
public:
AtmosphericModelSettings();
AtmosphericModelSettings(
DensityProfile& rayleighProfile,
DensityProfile& mieProfile,
DensityProfile& absorptionProfile);
AtmosphericModelSettings(
F32 skyBottomRadius,
F32 skyTopRadius,
DensityProfile& rayleighProfile,
DensityProfile& mieProfile,
DensityProfile& absorptionProfile,
F32 sunArcRadians,
F32 mieAniso);
F32 m_skyBottomRadius;
F32 m_skyTopRadius;
DensityProfile m_rayleighProfile;
DensityProfile m_mieProfile;
DensityProfile m_absorptionProfile;
F32 m_sunArcRadians;
F32 m_mieAnisotropy;
};
class LLAtmosphere
{
public:
LLAtmosphere();
~LLAtmosphere();
static void initClass();
static void cleanupClass();
const LLAtmosphere& operator=(const LLAtmosphere& rhs)
{
LL_ERRS() << "Illegal operation!" << LL_ENDL;
return *this;
}
LLGLTexture* getTransmittance();
LLGLTexture* getScattering();
LLGLTexture* getMieScattering();
LLGLTexture* getIlluminance();
GLhandleARB getAtmosphericShaderForLink() const;
bool configureAtmosphericModel(AtmosphericModelSettings& settings);
protected:
LLAtmosphere(const LLAtmosphere& rhs)
{
*this = rhs;
}
atmosphere::ModelConfig m_config;
atmosphere::PrecomputedTextures m_textures;
atmosphere::Model* m_model = nullptr;
LLPointer<LLGLTexture> m_transmittance;
LLPointer<LLGLTexture> m_scattering;
LLPointer<LLGLTexture> m_mie_scatter_texture;
LLPointer<LLGLTexture> m_illuminance;
std::vector<double> m_wavelengths;
std::vector<double> m_solar_irradiance;
std::vector<double> m_rayleigh_scattering;
std::vector<double> m_mie_scattering;
std::vector<double> m_mie_extinction;
std::vector<double> m_absorption_extinction;
std::vector<double> m_ground_albedo;
};
extern LLAtmosphere* gAtmosphere;
#endif // LL_ATMOSPHERE_H
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