Merge pull request #2723 from RyeMutt/uniform-cleanup

bindDeferredShader and dead uniform cleanup

5 files changed, 0 insertions, 489 deletions

diff --git a/indra/llrender/CMakeLists.txt b/indra/llrender/CMakeLists.txt
index 26a8ff070f..04401e9bea 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
@@ -39,7 +38,6 @@ 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..6097b09d96 100644
--- a/indra/llrender/llshadermgr.cpp
+++ b/indra/llrender/llshadermgr.cpp
@@ -1300,9 +1300,6 @@ void LLShaderMgr::initAttribsAndUniforms()
     mReservedUniforms.push_back("shadow_matrix");
     mReservedUniforms.push_back("env_mat");
     mReservedUniforms.push_back("shadow_clip");
-    mReservedUniforms.push_back("sun_wash");
-    mReservedUniforms.push_back("shadow_noise");
-    mReservedUniforms.push_back("blur_size");
     mReservedUniforms.push_back("ssao_radius");
     mReservedUniforms.push_back("ssao_max_radius");
     mReservedUniforms.push_back("ssao_factor");
@@ -1318,8 +1315,6 @@ void LLShaderMgr::initAttribsAndUniforms()
     mReservedUniforms.push_back("moon_dir");
     mReservedUniforms.push_back("shadow_res");
     mReservedUniforms.push_back("proj_shadow_res");
-    mReservedUniforms.push_back("depth_cutoff");
-    mReservedUniforms.push_back("norm_cutoff");
     mReservedUniforms.push_back("shadow_target_width");
 
     llassert(mReservedUniforms.size() == LLShaderMgr::DEFERRED_SHADOW_TARGET_WIDTH + 1);
@@ -1369,9 +1364,7 @@ void LLShaderMgr::initAttribsAndUniforms()
     mReservedUniforms.push_back("noiseMap");
     mReservedUniforms.push_back("lightFunc");
     mReservedUniforms.push_back("lightMap");
-    mReservedUniforms.push_back("bloomMap");
     mReservedUniforms.push_back("projectionMap");
-    mReservedUniforms.push_back("norm_mat");
 
     mReservedUniforms.push_back("specular_color");
     mReservedUniforms.push_back("env_intensity");
@@ -1450,10 +1443,6 @@ 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..1bae0cd8a0 100644
--- a/indra/llrender/llshadermgr.h
+++ b/indra/llrender/llshadermgr.h
@@ -157,9 +157,6 @@ public:
         DEFERRED_SHADOW_MATRIX,             //  "shadow_matrix"
         DEFERRED_ENV_MAT,                   //  "env_mat"
         DEFERRED_SHADOW_CLIP,               //  "shadow_clip"
-        DEFERRED_SUN_WASH,                  //  "sun_wash"
-        DEFERRED_SHADOW_NOISE,              //  "shadow_noise"
-        DEFERRED_BLUR_SIZE,                 //  "blur_size"
         DEFERRED_SSAO_RADIUS,               //  "ssao_radius"
         DEFERRED_SSAO_MAX_RADIUS,           //  "ssao_max_radius"
         DEFERRED_SSAO_FACTOR,               //  "ssao_factor"
@@ -175,8 +172,6 @@ public:
         DEFERRED_MOON_DIR,                  //  "moon_dir"
         DEFERRED_SHADOW_RES,                //  "shadow_res"
         DEFERRED_PROJ_SHADOW_RES,           //  "proj_shadow_res"
-        DEFERRED_DEPTH_CUTOFF,              //  "depth_cutoff"
-        DEFERRED_NORM_CUTOFF,               //  "norm_cutoff"
         DEFERRED_SHADOW_TARGET_WIDTH,       //  "shadow_target_width"
 
         DEFERRED_SSR_ITR_COUNT,             //  "iterationCount"
@@ -221,9 +216,7 @@ public:
         DEFERRED_NOISE,                     //  "noiseMap"
         DEFERRED_LIGHTFUNC,                 //  "lightFunc"
         DEFERRED_LIGHT,                     //  "lightMap"
-        DEFERRED_BLOOM,                     //  "bloomMap"
         DEFERRED_PROJECTION,                //  "projectionMap"
-        DEFERRED_NORM_MATRIX,               //  "norm_mat"
         SPECULAR_COLOR,                     //  "specular_color"
         ENVIRONMENT_INTENSITY,              //  "env_intensity"
 
@@ -301,13 +294,7 @@ 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"