diff --git a/apps/opencs/model/world/refidadapterimp.cpp b/apps/opencs/model/world/refidadapterimp.cpp
index d944adc23..644092f16 100644
--- a/apps/opencs/model/world/refidadapterimp.cpp
+++ b/apps/opencs/model/world/refidadapterimp.cpp
@@ -56,7 +56,9 @@ void CSMWorld::PotionRefIdAdapter::setData (const RefIdColumn *column, RefIdData
 
 
 CSMWorld::IngredientColumns::IngredientColumns (const InventoryColumns& columns)
-: InventoryColumns (columns) {}
+: InventoryColumns (columns)
+, mEffects(nullptr)
+{}
 
 CSMWorld::IngredientRefIdAdapter::IngredientRefIdAdapter (const IngredientColumns& columns)
 : InventoryRefIdAdapter<ESM::Ingredient> (UniversalId::Type_Ingredient, columns),
@@ -585,7 +587,13 @@ void CSMWorld::DoorRefIdAdapter::setData (const RefIdColumn *column, RefIdData&
 }
 
 CSMWorld::LightColumns::LightColumns (const InventoryColumns& columns)
-: InventoryColumns (columns) {}
+: InventoryColumns (columns)
+, mTime(nullptr)
+, mRadius(nullptr)
+, mColor(nullptr)
+, mSound(nullptr)
+, mEmitterType(nullptr)
+{}
 
 CSMWorld::LightRefIdAdapter::LightRefIdAdapter (const LightColumns& columns)
 : InventoryRefIdAdapter<ESM::Light> (UniversalId::Type_Light, columns), mColumns (columns)
@@ -1454,7 +1462,15 @@ int CSMWorld::CreatureMiscRefIdAdapter::getNestedRowsCount(const RefIdColumn *co
 }
 
 CSMWorld::WeaponColumns::WeaponColumns (const EnchantableColumns& columns)
-: EnchantableColumns (columns) {}
+: EnchantableColumns (columns)
+, mType(nullptr)
+, mHealth(nullptr)
+, mSpeed(nullptr)
+, mReach(nullptr)
+, mChop{nullptr}
+, mSlash{nullptr}
+, mThrust{nullptr}
+{}
 
 CSMWorld::WeaponRefIdAdapter::WeaponRefIdAdapter (const WeaponColumns& columns)
 : EnchantableRefIdAdapter<ESM::Weapon> (UniversalId::Type_Weapon, columns), mColumns (columns)
diff --git a/apps/opencs/model/world/refidadapterimp.hpp b/apps/opencs/model/world/refidadapterimp.hpp
index 0a29afcad..95d1a09a2 100644
--- a/apps/opencs/model/world/refidadapterimp.hpp
+++ b/apps/opencs/model/world/refidadapterimp.hpp
@@ -178,7 +178,11 @@ namespace CSMWorld
         const RefIdColumn *mName;
         const RefIdColumn *mScript;
 
-        NameColumns (const ModelColumns& base) : ModelColumns (base) {}
+        NameColumns (const ModelColumns& base)
+        : ModelColumns (base)
+        , mName(nullptr)
+        , mScript(nullptr)
+        {}
     };
 
     /// \brief Adapter for IDs with names (all but levelled lists and statics)
@@ -247,7 +251,12 @@ namespace CSMWorld
         const RefIdColumn *mWeight;
         const RefIdColumn *mValue;
 
-        InventoryColumns (const NameColumns& base) : NameColumns (base) {}
+        InventoryColumns (const NameColumns& base)
+        : NameColumns (base)
+        , mIcon(nullptr)
+        , mWeight(nullptr)
+        , mValue(nullptr)
+        {}
     };
 
     /// \brief Adapter for IDs that can go into an inventory
@@ -405,7 +414,11 @@ namespace CSMWorld
         const RefIdColumn *mEnchantment;
         const RefIdColumn *mEnchantmentPoints;
 
-        EnchantableColumns (const InventoryColumns& base) : InventoryColumns (base) {}
+        EnchantableColumns (const InventoryColumns& base)
+        : InventoryColumns (base)
+        , mEnchantment(nullptr)
+        , mEnchantmentPoints(nullptr)
+        {}
     };
 
     /// \brief Adapter for enchantable IDs
@@ -474,7 +487,11 @@ namespace CSMWorld
         const RefIdColumn *mQuality;
         const RefIdColumn *mUses;
 
-        ToolColumns (const InventoryColumns& base) : InventoryColumns (base) {}
+        ToolColumns (const InventoryColumns& base)
+        : InventoryColumns (base)
+        , mQuality(nullptr)
+        , mUses(nullptr)
+        {}
     };
 
     /// \brief Adapter for tools with limited uses IDs (lockpick, repair, probes)
@@ -549,7 +566,17 @@ namespace CSMWorld
         const RefIdColumn *mAiPackages;
         std::map<const RefIdColumn *, unsigned int> mServices;
 
-        ActorColumns (const NameColumns& base) : NameColumns (base) {}
+        ActorColumns (const NameColumns& base)
+            : NameColumns (base)
+            , mHello(nullptr)
+            , mFlee(nullptr)
+            , mFight(nullptr)
+            , mAlarm(nullptr)
+            , mInventory(nullptr)
+            , mSpells(nullptr)
+            , mDestinations(nullptr)
+            , mAiPackages(nullptr)
+            {}
     };
 
     /// \brief Adapter for actor IDs (handles common AI functionality)
@@ -2054,7 +2081,11 @@ namespace CSMWorld
         const RefIdColumn *mLevList;
         const RefIdColumn *mNestedListLevList;
 
-        LevListColumns (const BaseColumns& base) : BaseColumns (base) {}
+        LevListColumns (const BaseColumns& base)
+        : BaseColumns (base)
+        , mLevList(nullptr)
+        , mNestedListLevList(nullptr)
+        {}
     };
 
     template<typename RecordT>
diff --git a/apps/openmw/mwrender/renderingmanager.cpp b/apps/openmw/mwrender/renderingmanager.cpp
index 331927155..b6fe05d0f 100644
--- a/apps/openmw/mwrender/renderingmanager.cpp
+++ b/apps/openmw/mwrender/renderingmanager.cpp
@@ -815,6 +815,7 @@ namespace MWRender
         RenderingManager::RayResult result;
         result.mHit = false;
         result.mHitRefnum.mContentFile = -1;
+        result.mHitRefnum.mIndex = -1;
         result.mRatio = 0;
         if (intersector->containsIntersections())
         {
diff --git a/components/esm/loadtes3.cpp b/components/esm/loadtes3.cpp
index d953f1dc2..84a31b3bd 100644
--- a/components/esm/loadtes3.cpp
+++ b/components/esm/loadtes3.cpp
@@ -42,6 +42,7 @@ void ESM::Header::load (ESMReader &esm)
         MasterData m;
         m.name = esm.getHString();
         m.size = esm.getHNLong ("DATA");
+        m.index = -1;
         mMaster.push_back (m);
     }
 
diff --git a/components/misc/frameratelimiter.hpp b/components/misc/frameratelimiter.hpp
index b8e210165..b727074d2 100644
--- a/components/misc/frameratelimiter.hpp
+++ b/components/misc/frameratelimiter.hpp
@@ -13,6 +13,7 @@ namespace Misc
             explicit FrameRateLimiter(std::chrono::duration<Rep, Ratio> maxFrameDuration,
                                       std::chrono::steady_clock::time_point now = std::chrono::steady_clock::now())
                 : mMaxFrameDuration(std::chrono::duration_cast<std::chrono::steady_clock::duration>(maxFrameDuration))
+                , mLastFrameDuration(0)
                 , mLastMeasurement(now)
             {}
 
diff --git a/components/resource/scenemanager.cpp b/components/resource/scenemanager.cpp
index 66d48f971..287365a83 100644
--- a/components/resource/scenemanager.cpp
+++ b/components/resource/scenemanager.cpp
@@ -226,6 +226,7 @@ namespace Resource
         , mAutoUseNormalMaps(false)
         , mAutoUseSpecularMaps(false)
         , mApplyLightingToEnvMaps(false)
+        , mConvertAlphaTestToAlphaToCoverage(false)
         , mInstanceCache(new MultiObjectCache)
         , mSharedStateManager(new SharedStateManager)
         , mImageManager(imageManager)
diff --git a/components/sdlutil/sdlinputwrapper.cpp b/components/sdlutil/sdlinputwrapper.cpp
index 8d6a124e2..ca223ae3b 100644
--- a/components/sdlutil/sdlinputwrapper.cpp
+++ b/components/sdlutil/sdlinputwrapper.cpp
@@ -375,6 +375,7 @@ InputWrapper::InputWrapper(SDL_Window* window, osg::ref_ptr<osgViewer::Viewer> v
             pack_evt.y = mMouseY = evt.motion.y;
             pack_evt.xrel = evt.motion.xrel;
             pack_evt.yrel = evt.motion.yrel;
+            pack_evt.type = SDL_MOUSEMOTION;
             if (mFirstMouseMove)
             {
                 // first event should be treated as non-relative, since there's no point of reference
@@ -387,6 +388,7 @@ InputWrapper::InputWrapper(SDL_Window* window, osg::ref_ptr<osgViewer::Viewer> v
         {
             mMouseZ += pack_evt.zrel = (evt.wheel.y * 120);
             pack_evt.z = mMouseZ;
+            pack_evt.type = SDL_MOUSEWHEEL;
         }
         else
         {
diff --git a/components/shader/shadervisitor.cpp b/components/shader/shadervisitor.cpp
index 612c9011d..b0013538f 100644
--- a/components/shader/shadervisitor.cpp
+++ b/components/shader/shadervisitor.cpp
@@ -50,6 +50,7 @@ namespace Shader
         , mAutoUseNormalMaps(false)
         , mAutoUseSpecularMaps(false)
         , mApplyLightingToEnvMaps(false)
+        , mConvertAlphaTestToAlphaToCoverage(false)
         , mTranslucentFramebuffer(false)
         , mShaderManager(shaderManager)
         , mImageManager(imageManager)
diff --git a/extern/osg-ffmpeg-videoplayer/videostate.cpp b/extern/osg-ffmpeg-videoplayer/videostate.cpp
index a35c845db..c153aa14c 100644
--- a/extern/osg-ffmpeg-videoplayer/videostate.cpp
+++ b/extern/osg-ffmpeg-videoplayer/videostate.cpp
@@ -50,8 +50,9 @@ VideoState::VideoState()
     , av_sync_type(AV_SYNC_DEFAULT)
     , audio_st(nullptr)
     , video_st(nullptr), frame_last_pts(0.0)
-    , video_clock(0.0), sws_context(nullptr), pictq_size(0)
-    , pictq_rindex(0), pictq_windex(0)
+    , video_clock(0.0), sws_context(nullptr)
+    , sws_context_w(0), sws_context_h(0)
+    , pictq_size(0), pictq_rindex(0), pictq_windex(0)
     , mSeekRequested(false)
     , mSeekPos(0)
     , mVideoEnded(false)