Use INI-imported underwater fog settings (Fixes #2907, Fixes #1511)

apps/openmw/mwrender/renderingmanager.cpp

@@ -31,6 +31,8 @@
 
 #include <components/esm/loadcell.hpp>
 
+#include "../mwworld/fallback.hpp"
+
 #include "sky.hpp"
 #include "effectmanager.hpp"
 #include "npcanimation.hpp"
@@ -199,6 +201,10 @@ namespace MWRender
         updateProjectionMatrix();
         mStateUpdater->setFogEnd(mViewDistance);
 
+        mUnderwaterColor = fallback->getFallbackColour("Water_UnderwaterColor");
+        mUnderwaterWeight = fallback->getFallbackFloat("Water_UnderwaterColorWeight");
+        mUnderwaterIndoorFog = fallback->getFallbackFloat("Water_UnderwaterIndoorFog");
+
         mRootNode->getOrCreateStateSet()->addUniform(new osg::Uniform("near", mNearClip));
         mRootNode->getOrCreateStateSet()->addUniform(new osg::Uniform("far", mViewDistance));
     }
@@ -349,13 +355,14 @@ namespace MWRender
     {
         osg::Vec4f color = SceneUtil::colourFromRGB(cell->mAmbi.mFog);
 
-        configureFog (cell->mAmbi.mFogDensity, color);
+        configureFog (cell->mAmbi.mFogDensity, mUnderwaterIndoorFog, color);
     }
 
-    void RenderingManager::configureFog(float fogDepth, const osg::Vec4f &color)
+    void RenderingManager::configureFog(float fogDepth, float underwaterFog, const osg::Vec4f &color)
     {
         mFogDepth = fogDepth;
         mFogColor = color;
+        mUnderwaterFog = underwaterFog;
     }
 
     SkyManager* RenderingManager::getSkyManager()
@@ -378,9 +385,9 @@ namespace MWRender
         mCamera->getPosition(focal, cameraPos);
         if (mWater->isUnderwater(cameraPos))
         {
-            setFogColor(osg::Vec4f(0.090195f, 0.115685f, 0.12745f, 1.f));
-            mStateUpdater->setFogStart(0.f);
-            mStateUpdater->setFogEnd(1000);
+            setFogColor(mUnderwaterColor * mUnderwaterWeight + mFogColor * (1.f-mUnderwaterWeight));
+            mStateUpdater->setFogStart(mViewDistance * (1 - mUnderwaterFog));
+            mStateUpdater->setFogEnd(mViewDistance);
         }
         else
         {

apps/openmw/mwrender/renderingmanager.hpp

@@ -79,7 +79,7 @@ namespace MWRender
 
         void configureAmbient(const ESM::Cell* cell);
         void configureFog(const ESM::Cell* cell);
-        void configureFog(float fogDepth, const osg::Vec4f& colour);
+        void configureFog(float fogDepth, float underwaterFog, const osg::Vec4f& colour);
 
         void addCell(const MWWorld::CellStore* store);
         void removeCell(const MWWorld::CellStore* store);
@@ -192,6 +192,10 @@ namespace MWRender
         osg::ref_ptr<StateUpdater> mStateUpdater;
 
         float mFogDepth;
+        osg::Vec4f mUnderwaterColor;
+        float mUnderwaterWeight;
+        float mUnderwaterFog;
+        float mUnderwaterIndoorFog;
         osg::Vec4f mFogColor;
 
         osg::Vec4f mAmbientColor;

apps/openmw/mwworld/weather.cpp

@@ -438,6 +438,10 @@ WeatherManager::WeatherManager(MWRender::RenderingManager& rendering, const MWWo
     , mDayEnd(mSunsetTime)
     , mHoursBetweenWeatherChanges(fallback.getFallbackFloat("Weather_Hours_Between_Weather_Changes"))
     , mRainSpeed(fallback.getFallbackFloat("Weather_Precip_Gravity"))
+    , mUnderwaterSunriseFog(fallback.getFallbackFloat("Water_UnderwaterSunriseFog"))
+    , mUnderwaterDayFog(fallback.getFallbackFloat("Water_UnderwaterDayFog"))
+    , mUnderwaterSunsetFog(fallback.getFallbackFloat("Water_UnderwaterSunsetFog"))
+    , mUnderwaterNightFog(fallback.getFallbackFloat("Water_UnderwaterNightFog"))
     , mWeatherSettings()
     , mMasser("Masser", fallback)
     , mSecunda("Secunda", fallback)
@@ -624,6 +628,53 @@ void WeatherManager::update(float duration, bool paused)
         mRendering.setSunDirection( final * -1 );
     }
 
+    // TODO: use pre/post sunset/sunrise time values in [Weather] section
+    // TODO: factor out the time of day interpolation code to reuse for calculateWeatherResult()
+    float gameHour = time.getHour();
+    float underwaterFog;
+    // night
+    if (gameHour <= mNightEnd || gameHour >= mNightStart + 1)
+        underwaterFog = mUnderwaterNightFog;
+    // sunrise
+    else if (gameHour >= mNightEnd && gameHour <= mDayStart + 1)
+    {
+        if (gameHour <= mSunriseTime)
+        {
+            // fade in
+            float advance = mSunriseTime - gameHour;
+            float factor = advance / 0.5f;
+            underwaterFog = lerp(mUnderwaterSunriseFog, mUnderwaterNightFog, factor);
+        }
+        else //if (gameHour >= 6)
+        {
+            // fade out
+            float advance = gameHour - mSunriseTime;
+            float factor = advance / 3.f;
+            underwaterFog = lerp(mUnderwaterSunriseFog, mUnderwaterDayFog, factor);
+        }
+    }
+    // day
+    else if (gameHour >= mDayStart + 1 && gameHour <= mDayEnd - 1)
+        underwaterFog = mUnderwaterDayFog;
+    // sunset
+    else if (gameHour >= mDayEnd - 1 && gameHour <= mNightStart + 1)
+    {
+        if (gameHour <= mDayEnd + 1)
+        {
+            // fade in
+            float advance = (mDayEnd + 1) - gameHour;
+            float factor = (advance / 2);
+            underwaterFog = lerp(mUnderwaterSunsetFog, mUnderwaterDayFog, factor);
+        }
+        else //if (gameHour >= 19)
+        {
+            // fade out
+            float advance = gameHour - (mDayEnd + 1);
+            float factor = advance / 2.f;
+            underwaterFog = lerp(mUnderwaterSunsetFog, mUnderwaterNightFog, factor);
+        }
+    }
+
     float peakHour = mSunriseTime + (mSunsetTime - mSunriseTime) / 2;
     if (time.getHour() < mSunriseTime || time.getHour() > mSunsetTime)
         mRendering.getSkyManager()->setGlareTimeOfDayFade(0);
@@ -635,7 +686,7 @@ void WeatherManager::update(float duration, bool paused)
     mRendering.getSkyManager()->setMasserState(mMasser.calculateState(time));
     mRendering.getSkyManager()->setSecundaState(mSecunda.calculateState(time));
 
-    mRendering.configureFog(mResult.mFogDepth, mResult.mFogColor);
+    mRendering.configureFog(mResult.mFogDepth, underwaterFog, mResult.mFogColor);
     mRendering.setAmbientColour(mResult.mAmbientColor);
     mRendering.setSunColour(mResult.mSunColor);
 

apps/openmw/mwworld/weather.hpp

@@ -249,6 +249,13 @@ namespace MWWorld
         float mDayEnd;
         float mHoursBetweenWeatherChanges;
         float mRainSpeed;
+
+        // underwater fog not really related to weather, but we handle it here because it's convenient
+        float mUnderwaterSunriseFog;
+        float mUnderwaterDayFog;
+        float mUnderwaterSunsetFog;
+        float mUnderwaterNightFog;
+
         std::vector<Weather> mWeatherSettings;
         MoonModel mMasser;
         MoonModel mSecunda;