diff options
Diffstat (limited to 'indra/llrender')
| -rw-r--r-- | indra/llrender/CMakeLists.txt | 2 | ||||
| -rw-r--r-- | indra/llrender/llatmosphere.cpp | 290 | ||||
| -rw-r--r-- | indra/llrender/llatmosphere.h | 173 | ||||
| -rw-r--r-- | indra/llrender/llshadermgr.cpp | 4 | ||||
| -rw-r--r-- | indra/llrender/llshadermgr.h | 6 |
5 files changed, 0 insertions, 475 deletions
diff --git a/indra/llrender/CMakeLists.txt b/indra/llrender/CMakeLists.txt index ccff7c7a8c..fcd287bbb3 100644 --- a/indra/llrender/CMakeLists.txt +++ b/indra/llrender/CMakeLists.txt @@ -10,7 +10,6 @@ include(LLImage) include(LLWindow) set(llrender_SOURCE_FILES - llatmosphere.cpp llcubemap.cpp llcubemaparray.cpp llfontbitmapcache.cpp @@ -40,7 +39,6 @@ set(llrender_SOURCE_FILES set(llrender_HEADER_FILES CMakeLists.txt - llatmosphere.h llcubemap.h llcubemaparray.h llfontgl.h diff --git a/indra/llrender/llatmosphere.cpp b/indra/llrender/llatmosphere.cpp deleted file mode 100644 index eae5623a3c..0000000000 --- a/indra/llrender/llatmosphere.cpp +++ /dev/null @@ -1,290 +0,0 @@ -/** - * @file llatmosphere.cpp - * @brief LLAtmosphere integration impl - * - * $LicenseInfo:firstyear=2018&license=viewerlgpl$ - * 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 - * $/LicenseInfo$ - */ - -#include "linden_common.h" - -#include "llatmosphere.h" -#include "llfasttimer.h" -#include "llsys.h" -#include "llglheaders.h" -#include "llrender.h" -#include "llshadermgr.h" -#include "llglslshader.h" - -LLAtmosphere* gAtmosphere = nullptr; - -// Values from "Reference Solar Spectral Irradiance: ASTM G-173", ETR column -// (see http://rredc.nrel.gov/solar/spectra/am1.5/ASTMG173/ASTMG173.html), -// summed and averaged in each bin (e.g. the value for 360nm is the average -// of the ASTM G-173 values for all wavelengths between 360 and 370nm). -// Values in W.m^-2. -const int kLambdaMin = 360; -const int kLambdaMax = 830; -const double kSolarIrradiance[48] = { - 1.11776, 1.14259, 1.01249, 1.14716, 1.72765, 1.73054, 1.6887, 1.61253, - 1.91198, 2.03474, 2.02042, 2.02212, 1.93377, 1.95809, 1.91686, 1.8298, - 1.8685, 1.8931, 1.85149, 1.8504, 1.8341, 1.8345, 1.8147, 1.78158, 1.7533, - 1.6965, 1.68194, 1.64654, 1.6048, 1.52143, 1.55622, 1.5113, 1.474, 1.4482, - 1.41018, 1.36775, 1.34188, 1.31429, 1.28303, 1.26758, 1.2367, 1.2082, - 1.18737, 1.14683, 1.12362, 1.1058, 1.07124, 1.04992 -}; - -// Values from http://www.iup.uni-bremen.de/gruppen/molspec/databases/ -// referencespectra/o3spectra2011/index.html for 233K, summed and averaged in -// each bin (e.g. the value for 360nm is the average of the original values -// for all wavelengths between 360 and 370nm). Values in m^2. -const double kOzoneCrossSection[48] = { - 1.18e-27, 2.182e-28, 2.818e-28, 6.636e-28, 1.527e-27, 2.763e-27, 5.52e-27, - 8.451e-27, 1.582e-26, 2.316e-26, 3.669e-26, 4.924e-26, 7.752e-26, 9.016e-26, - 1.48e-25, 1.602e-25, 2.139e-25, 2.755e-25, 3.091e-25, 3.5e-25, 4.266e-25, - 4.672e-25, 4.398e-25, 4.701e-25, 5.019e-25, 4.305e-25, 3.74e-25, 3.215e-25, - 2.662e-25, 2.238e-25, 1.852e-25, 1.473e-25, 1.209e-25, 9.423e-26, 7.455e-26, - 6.566e-26, 5.105e-26, 4.15e-26, 4.228e-26, 3.237e-26, 2.451e-26, 2.801e-26, - 2.534e-26, 1.624e-26, 1.465e-26, 2.078e-26, 1.383e-26, 7.105e-27 -}; - -// From https://en.wikipedia.org/wiki/Dobson_unit, in molecules.m^-2. -const double kDobsonUnit = 2.687e20; -// Maximum number density of ozone molecules, in m^-3 (computed so at to get -// 300 Dobson units of ozone - for this we divide 300 DU by the integral of -// the ozone density profile defined below, which is equal to 15km). -const double kMaxOzoneNumberDensity = 300.0 * kDobsonUnit / 15000.0; -const double kRayleigh = 1.24062e-6; -const double kRayleighScaleHeight = 8000.0; -const double kMieScaleHeight = 1200.0; -const double kMieAngstromAlpha = 0.0; -const double kMieAngstromBeta = 5.328e-3; -const double kMieSingleScatteringAlbedo = 0.9; -const double kGroundAlbedo = 0.1; - -AtmosphericModelSettings::AtmosphericModelSettings() - : m_skyBottomRadius(6360.0f) - , m_skyTopRadius(6420.0f) - , m_sunArcRadians(0.00045f) - , m_mieAnisotropy(0.8f) -{ - DensityLayer rayleigh_density(0.0, 1.0, -1.0 / kRayleighScaleHeight, 0.0, 0.0); - DensityLayer mie_density(0.0, 1.0, -1.0 / kMieScaleHeight, 0.0, 0.0); - - m_rayleighProfile.push_back(rayleigh_density); - m_mieProfile.push_back(mie_density); - - // Density profile increasing linearly from 0 to 1 between 10 and 25km, and - // decreasing linearly from 1 to 0 between 25 and 40km. This is an approximate - // profile from http://www.kln.ac.lk/science/Chemistry/Teaching_Resources/ - // Documents/Introduction%20to%20atmospheric%20chemistry.pdf (page 10). - m_absorptionProfile.push_back(DensityLayer(25000.0, 0.0, 0.0, 1.0 / 15000.0, -2.0 / 3.0)); - m_absorptionProfile.push_back(DensityLayer(0.0, 0.0, 0.0, -1.0 / 15000.0, 8.0 / 3.0)); -} - -AtmosphericModelSettings::AtmosphericModelSettings( - DensityProfile& rayleighProfile, - DensityProfile& mieProfile, - DensityProfile& absorptionProfile) -: m_skyBottomRadius(6360.0f) -, m_skyTopRadius(6420.0f) -, m_rayleighProfile(rayleighProfile) -, m_mieProfile(mieProfile) -, m_absorptionProfile(absorptionProfile) -, m_sunArcRadians(0.00045f) -, m_mieAnisotropy(0.8f) -{ -} - -AtmosphericModelSettings::AtmosphericModelSettings( - F32 skyBottomRadius, - F32 skyTopRadius, - DensityProfile& rayleighProfile, - DensityProfile& mieProfile, - DensityProfile& absorptionProfile, - F32 sunArcRadians, - F32 mieAniso) -: m_skyBottomRadius(skyBottomRadius) -, m_skyTopRadius(skyTopRadius) -, m_rayleighProfile(rayleighProfile) -, m_mieProfile(mieProfile) -, m_absorptionProfile(absorptionProfile) -, m_sunArcRadians(sunArcRadians) -, m_mieAnisotropy(mieAniso) -{ -} - -bool AtmosphericModelSettings::operator==(const AtmosphericModelSettings& rhs) const -{ - if (m_skyBottomRadius != rhs.m_skyBottomRadius) - { - return false; - } - - if (m_skyTopRadius != rhs.m_skyTopRadius) - { - return false; - } - - if (m_sunArcRadians != rhs.m_sunArcRadians) - { - return false; - } - - if (m_mieAnisotropy != rhs.m_mieAnisotropy) - { - return false; - } - - if (m_rayleighProfile != rhs.m_rayleighProfile) - { - return false; - } - - if (m_mieProfile != rhs.m_mieProfile) - { - return false; - } - - if (m_absorptionProfile != rhs.m_absorptionProfile) - { - return false; - } - - return true; -} - -void LLAtmosphere::initClass() -{ - if (!gAtmosphere) - { - gAtmosphere = new LLAtmosphere; - } -} - -void LLAtmosphere::cleanupClass() -{ - if(gAtmosphere) - { - delete gAtmosphere; - } - gAtmosphere = NULL; -} - -LLAtmosphere::LLAtmosphere() -{ - for (int l = kLambdaMin; l <= kLambdaMax; l += 10) - { - double lambda = static_cast<double>(l) * 1e-3; // micro-meters - double mie = kMieAngstromBeta / kMieScaleHeight * pow(lambda, -kMieAngstromAlpha); - m_wavelengths.push_back(l); - m_solar_irradiance.push_back(kSolarIrradiance[(l - kLambdaMin) / 10]); - m_rayleigh_scattering.push_back(kRayleigh * pow(lambda, -4)); - m_mie_scattering.push_back(mie * kMieSingleScatteringAlbedo); - m_mie_extinction.push_back(mie); - m_absorption_extinction.push_back(kMaxOzoneNumberDensity * kOzoneCrossSection[(l - kLambdaMin) / 10]); - m_ground_albedo.push_back(kGroundAlbedo); - } - - AtmosphericModelSettings defaults; - configureAtmosphericModel(defaults); -} - -LLAtmosphere::~LLAtmosphere() -{ - // Cease referencing textures from atmosphere::model from our LLGLTextures wrappers for same. - if (m_transmittance) - { - m_transmittance->setTexName(0); - } - - if (m_scattering) - { - m_scattering->setTexName(0); - } - - if (m_mie_scatter_texture) - { - m_mie_scatter_texture->setTexName(0); - } -} - -bool LLAtmosphere::configureAtmosphericModel(AtmosphericModelSettings& settings) -{ - // TBD - return true; -} - -LLGLTexture* LLAtmosphere::getTransmittance() -{ - if (!m_transmittance) - { - m_transmittance = new LLGLTexture; - m_transmittance->generateGLTexture(); - m_transmittance->setAddressMode(LLTexUnit::eTextureAddressMode::TAM_CLAMP); - m_transmittance->setFilteringOption(LLTexUnit::eTextureFilterOptions::TFO_BILINEAR); - m_transmittance->setExplicitFormat(GL_RGB32F, GL_RGB, GL_FLOAT); - m_transmittance->setTarget(GL_TEXTURE_2D, LLTexUnit::TT_TEXTURE); - } - return m_transmittance; -} - -LLGLTexture* LLAtmosphere::getScattering() -{ - if (!m_scattering) - { - m_scattering = new LLGLTexture; - m_scattering->generateGLTexture(); - m_scattering->setAddressMode(LLTexUnit::eTextureAddressMode::TAM_CLAMP); - m_scattering->setFilteringOption(LLTexUnit::eTextureFilterOptions::TFO_BILINEAR); - m_scattering->setExplicitFormat(GL_RGB16F, GL_RGB, GL_FLOAT); - m_scattering->setTarget(GL_TEXTURE_3D, LLTexUnit::TT_TEXTURE_3D); - } - return m_scattering; -} - -LLGLTexture* LLAtmosphere::getMieScattering() -{ - if (!m_mie_scatter_texture) - { - m_mie_scatter_texture = new LLGLTexture; - m_mie_scatter_texture->generateGLTexture(); - m_mie_scatter_texture->setAddressMode(LLTexUnit::eTextureAddressMode::TAM_CLAMP); - m_mie_scatter_texture->setFilteringOption(LLTexUnit::eTextureFilterOptions::TFO_BILINEAR); - m_mie_scatter_texture->setExplicitFormat(GL_RGB16F, GL_RGB, GL_FLOAT); - m_mie_scatter_texture->setTarget(GL_TEXTURE_3D, LLTexUnit::TT_TEXTURE_3D); - } - return m_mie_scatter_texture; -} - -LLGLTexture* LLAtmosphere::getIlluminance() -{ - if (!m_illuminance) - { - m_illuminance = new LLGLTexture; - m_illuminance->generateGLTexture(); - m_illuminance->setAddressMode(LLTexUnit::eTextureAddressMode::TAM_CLAMP); - m_illuminance->setFilteringOption(LLTexUnit::eTextureFilterOptions::TFO_BILINEAR); - m_illuminance->setExplicitFormat(GL_RGB32F, GL_RGB, GL_FLOAT); - m_illuminance->setTarget(GL_TEXTURE_2D, LLTexUnit::TT_TEXTURE); - } - return m_illuminance; -} diff --git a/indra/llrender/llatmosphere.h b/indra/llrender/llatmosphere.h deleted file mode 100644 index 4b8c7d0819..0000000000 --- a/indra/llrender/llatmosphere.h +++ /dev/null @@ -1,173 +0,0 @@ -/** - * @file llatmosphere.h - * @brief LLAtmosphere class - * - * $LicenseInfo:firstyear=2018&license=viewerlgpl$ - * 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" - -// An atmosphere layer of width 'width' (in m), and whose density is defined as -// 'exp_term' * exp('exp_scale' * h) + 'linear_term' * h + 'constant_term', -// clamped to [0,1], and where h is the altitude (in m). 'exp_term' and -// 'constant_term' are unitless, while 'exp_scale' and 'linear_term' are in -// m^-1. -class DensityLayer { - public: - DensityLayer() - : width(0.0f) - , exp_term(0.0f) - , exp_scale(0.0f) - , linear_term(0.0f) - , constant_term(0.0f) - { - } - - DensityLayer(float width, float exp_term, float exp_scale, float linear_term, float constant_term) - : width(width) - , exp_term(exp_term) - , exp_scale(exp_scale) - , linear_term(linear_term) - , constant_term(constant_term) - { - } - - bool operator==(const DensityLayer& rhs) const - { - if (width != rhs.width) - { - return false; - } - - if (exp_term != rhs.exp_term) - { - return false; - } - - if (exp_scale != rhs.exp_scale) - { - return false; - } - - if (linear_term != rhs.linear_term) - { - return false; - } - - if (constant_term != rhs.constant_term) - { - return false; - } - - return true; - } - - float width = 1024.0f; - float exp_term = 1.0f; - float exp_scale = 1.0f; - float linear_term = 1.0f; - float constant_term = 0.0f; -}; - -typedef std::vector<DensityLayer> 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); - - bool operator==(const AtmosphericModelSettings& rhs) const; - - 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(); - - bool configureAtmosphericModel(AtmosphericModelSettings& settings); - -protected: - LLAtmosphere(const LLAtmosphere& rhs) - { - *this = rhs; - } - - 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; - - AtmosphericModelSettings m_settings; -}; - -extern LLAtmosphere* gAtmosphere; - -#endif // LL_ATMOSPHERE_H diff --git a/indra/llrender/llshadermgr.cpp b/indra/llrender/llshadermgr.cpp index 150277c8df..e3076a6d53 100644 --- a/indra/llrender/llshadermgr.cpp +++ b/indra/llrender/llshadermgr.cpp @@ -1450,10 +1450,6 @@ void LLShaderMgr::initAttribsAndUniforms() mReservedUniforms.push_back("sun_size"); mReservedUniforms.push_back("fog_color"); - mReservedUniforms.push_back("transmittance_texture"); - mReservedUniforms.push_back("scattering_texture"); - mReservedUniforms.push_back("single_mie_scattering_texture"); - mReservedUniforms.push_back("irradiance_texture"); mReservedUniforms.push_back("blend_factor"); mReservedUniforms.push_back("moisture_level"); mReservedUniforms.push_back("droplet_radius"); diff --git a/indra/llrender/llshadermgr.h b/indra/llrender/llshadermgr.h index 0eb9db6715..5e10cc2a18 100644 --- a/indra/llrender/llshadermgr.h +++ b/indra/llrender/llshadermgr.h @@ -301,13 +301,7 @@ public: SUN_SIZE, // "sun_size" FOG_COLOR, // "fog_color" - // precomputed textures - TRANSMITTANCE_TEX, // "transmittance_texture" - SCATTER_TEX, // "scattering_texture" - SINGLE_MIE_SCATTER_TEX, // "single_mie_scattering_texture" - ILLUMINANCE_TEX, // "irradiance_texture" BLEND_FACTOR, // "blend_factor" - MOISTURE_LEVEL, // "moisture_level" DROPLET_RADIUS, // "droplet_radius" ICE_LEVEL, // "ice_level" |