Add shared UBO

apps/opencs/model/world/data.cpp

@@ -83,6 +83,7 @@ CSMWorld::Data::Data (ToUTF8::FromType encoding, bool fsStrict, const Files::Pat
     defines["clamp"] = "1"; // Clamp lighting
     defines["preLightEnv"] = "0"; // Apply environment maps after lighting like Morrowind
     defines["radialFog"] = "0";
+    defines["ffpLighting"] = "0";
     for (const auto& define : shadowDefines)
         defines[define.first] = define.second;
     mResourceSystem->getSceneManager()->getShaderManager().setGlobalDefines(defines);

apps/opencs/view/render/scenewidget.cpp

@@ -72,6 +72,7 @@ RenderWidget::RenderWidget(QWidget *parent, Qt::WindowFlags f)
     mView->getCamera()->setViewport( new osg::Viewport(0, 0, traits->width, traits->height) );
 
     SceneUtil::LightManager* lightMgr = new SceneUtil::LightManager;
+    lightMgr->setStartLight(1);
     lightMgr->setLightingMask(Mask_Lighting);
     mRootNode = lightMgr;
 

apps/openmw/mwrender/animation.cpp

@@ -1613,7 +1613,7 @@ namespace MWRender
     {
         bool exterior = mPtr.isInCell() && mPtr.getCell()->getCell()->isExterior();
 
-        SceneUtil::addLight(parent, esmLight, Mask_ParticleSystem, Mask_Lighting, exterior);
+        SceneUtil::addLight(parent, esmLight, Mask_ParticleSystem, Mask_Lighting, exterior, mResourceSystem->getSceneManager()->getFFPLighting());
     }
 
     void Animation::addEffect (const std::string& model, int effectId, bool loop, const std::string& bonename, const std::string& texture)

apps/openmw/mwrender/renderingmanager.cpp

@@ -213,9 +213,11 @@ namespace MWRender
         resourceSystem->getSceneManager()->setAutoUseSpecularMaps(Settings::Manager::getBool("auto use object specular maps", "Shaders"));
         resourceSystem->getSceneManager()->setSpecularMapPattern(Settings::Manager::getString("specular map pattern", "Shaders"));
         resourceSystem->getSceneManager()->setApplyLightingToEnvMaps(Settings::Manager::getBool("apply lighting to environment maps", "Shaders"));
-        resourceSystem->getSceneManager()->setFFPLighting(clampLighting || !forceShaders || !SceneUtil::LightManager::queryNonFFPLightingSupport());
-
-        osg::ref_ptr<SceneUtil::LightManager> sceneRoot = new SceneUtil::LightManager(mResourceSystem->getSceneManager()->getFFPLighting());
+        bool useFFP = clampLighting || !forceShaders || !SceneUtil::LightManager::queryNonFFPLightingSupport();
+        resourceSystem->getSceneManager()->setFFPLighting(useFFP);
+        resourceSystem->getSceneManager()->getShaderManager().setFFPLighting(useFFP);
+        
+        osg::ref_ptr<SceneUtil::LightManager> sceneRoot = new SceneUtil::LightManager(useFFP);
         sceneRoot->setLightingMask(Mask_Lighting);
         mSceneRoot = sceneRoot;
         sceneRoot->setStartLight(1);

apps/openmw/mwrender/water.cpp

@@ -646,7 +646,7 @@ void Water::createShaderWaterStateSet(osg::Node* node, Reflection* reflection, R
     program->addShader(vertexShader);
     program->addShader(fragmentShader);
     if (!mResourceSystem->getSceneManager()->getFFPLighting())
-        program->addBindUniformBlock("SunlightBuffer", 9);
+        program->addBindUniformBlock("SunlightBuffer", 0);
     shaderStateset->setAttributeAndModes(program, osg::StateAttribute::ON);
 
     node->setStateSet(shaderStateset);

components/resource/scenemanager.cpp

@@ -220,7 +220,7 @@ namespace Resource
 
     SceneManager::SceneManager(const VFS::Manager *vfs, Resource::ImageManager* imageManager, Resource::NifFileManager* nifFileManager)
         : ResourceManager(vfs)
-        , mShaderManager(new Shader::ShaderManager(this))
+        , mShaderManager(new Shader::ShaderManager)
         , mForceShaders(false)
         , mClampLighting(true)
         , mAutoUseNormalMaps(false)

components/sceneutil/lightcontroller.cpp

@@ -11,13 +11,14 @@
 namespace SceneUtil
 {
 
-    LightController::LightController()
+    LightController::LightController(bool useFFPLighting)
         : mType(LT_Normal)
         , mPhase(0.25f + Misc::Rng::rollClosedProbability() * 0.75f)
         , mBrightness(0.675f)
         , mStartTime(0.0)
         , mLastTime(0.0)
         , mTicksToAdvance(0.f)
+        , mFFPLighting(useFFPLighting)
     {
     }
 
@@ -62,7 +63,11 @@ namespace SceneUtil
                 mPhase = mPhase <= 0.5f ? 1.f : 0.25f;
         }
 
-        static_cast<SceneUtil::LightSource*>(node)->getLight(nv->getTraversalNumber())->setDiffuse(mDiffuseColor * mBrightness);
+        auto* lightSource = static_cast<SceneUtil::LightSource*>(node);
+        if (mFFPLighting)
+            lightSource->getLight(nv->getTraversalNumber())->setDiffuse(mDiffuseColor * mBrightness);
+        else
+            lightSource->setBrightness(nv->getTraversalNumber(), mBrightness);
 
         traverse(node, nv);
     }

components/sceneutil/lightcontroller.hpp

@@ -20,7 +20,7 @@ namespace SceneUtil
             LT_PulseSlow
         };
 
-        LightController();
+        LightController(bool useFFPLighting=true);
 
         void setType(LightType type);
 
@@ -36,6 +36,7 @@ namespace SceneUtil
         double mStartTime;
         double mLastTime;
         float mTicksToAdvance;
+        bool mFFPLighting;
     };
 
 }

components/sceneutil/lightmanager.cpp

@@ -1,6 +1,7 @@
 #include "lightmanager.hpp"
 
 #include <osg/BufferObject>
+#include <osg/BufferIndexBinding>
 
 #include <osgUtil/CullVisitor>
 
@@ -12,6 +13,8 @@
 
 #include <components/debug/debuglog.hpp>
 
+#include "apps/openmw/mwrender/vismask.hpp"
+
 namespace 
 {
     /* similar to the boost::hash_combine */
@@ -32,6 +35,10 @@ namespace SceneUtil
 {
     static int sLightId = 0;
 
+////////////////////////////////////////////////////////////////////////////////
+// Internal Data Structures
+////////////////////////////////////////////////////////////////////////////////
+
     class LightBuffer : public osg::Referenced
     {
     public:
@@ -59,11 +66,6 @@ namespace SceneUtil
             mDirty = false;
         }
 
-        int blockSize() const 
-        {
-            return mData->getNumElements() * sizeof(GL_FLOAT) * osg::Vec4::num_components;
-        }
-
     protected:
         size_t mNumElements;
         osg::ref_ptr<osg::Vec4Array> mData;
@@ -114,7 +116,7 @@ namespace SceneUtil
     {
     public:
 
-        enum Type {Diffuse, Ambient, Position, Attenuation};
+        enum Type {Position, Diffuse, Ambient, Attenuation};
 
         PointLightBuffer(int count)
             : LightBuffer(4, count)
@@ -124,9 +126,10 @@ namespace SceneUtil
         {
             if (getValue(index, type) == value)
                 return;
-
-            (*mData)[mNumElements * index + type] = value;
-
+            
+            int indexOffset = mNumElements * index + type;
+            (*mData)[indexOffset] = value;
+            
             mDirty = true;
         }
 
@@ -155,12 +158,16 @@ namespace SceneUtil
         return &cacheVector[contextid];
     }
 
+////////////////////////////////////////////////////////////////////////////////
+// State Attributes
+////////////////////////////////////////////////////////////////////////////////
+
     SunlightStateAttribute::SunlightStateAttribute()
         : mBuffer(new SunlightBuffer)
     {
         osg::ref_ptr<osg::UniformBufferObject> ubo = new osg::UniformBufferObject;
         mBuffer->getData()->setBufferObject(ubo);
-        mUbb = new osg::UniformBufferBinding(9 , mBuffer->getData().get(), 0, mBuffer->blockSize());
+        mUbb = new osg::UniformBufferBinding(0, mBuffer->getData().get(), 0, mBuffer->getData()->getTotalDataSize());
     }
 
     SunlightStateAttribute::SunlightStateAttribute(const SunlightStateAttribute &copy, const osg::CopyOp &copyop)
@@ -235,56 +242,6 @@ namespace SceneUtil
         osg::Vec4f mnullptr;
     };
 
-    class LightStateAttribute : public osg::StateAttribute
-    {
-    public:
-        LightStateAttribute() : mBuffer(nullptr) {}
-        LightStateAttribute(const std::vector<osg::ref_ptr<osg::Light> >& lights, const osg::ref_ptr<PointLightBuffer>& buffer) : mLights(lights), mBuffer(buffer) {} 
-
-        LightStateAttribute(const LightStateAttribute& copy,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY)
-            : osg::StateAttribute(copy,copyop), mLights(copy.mLights), mBuffer(copy.mBuffer) {}
-
-        int compare(const StateAttribute &sa) const override
-        {
-            throw std::runtime_error("LightStateAttribute::compare: unimplemented");
-        }
-
-        META_StateAttribute(NifOsg, LightStateAttribute, osg::StateAttribute::LIGHT)
-
-        void apply(osg::State& state) const override
-        {
-            if (mLights.empty())
-                return;
-            osg::Matrix modelViewMatrix = state.getModelViewMatrix();
-
-            state.applyModelViewMatrix(state.getInitialViewMatrix());
-
-            if (mBuffer)
-            {
-                for (size_t i = 0; i < mLights.size(); ++i)
-                {
-
-                    mBuffer->setValue(i, PointLightBuffer::Diffuse, mLights[i]->getDiffuse());
-                    mBuffer->setValue(i, PointLightBuffer::Ambient, mLights[i]->getAmbient());
-                    mBuffer->setValue(i, PointLightBuffer::Position, mLights[i]->getPosition() * state.getModelViewMatrix());
-                    mBuffer->setValue(i, PointLightBuffer::Attenuation,
-                                        osg::Vec4(mLights[i]->getConstantAttenuation(), 
-                                                  mLights[i]->getLinearAttenuation(), 
-                                                  mLights[i]->getQuadraticAttenuation(), 0.0));
-                }
-
-                if (mBuffer && mBuffer->isDirty())
-                    mBuffer->dirty();
-            }
-
-            state.applyModelViewMatrix(modelViewMatrix);
-        }
-
-    private:
-        std::vector<osg::ref_ptr<osg::Light>> mLights;
-        osg::ref_ptr<PointLightBuffer> mBuffer;
-    };
-
     class FFPLightStateAttribute : public osg::StateAttribute
     {
     public:
@@ -368,6 +325,10 @@ namespace SceneUtil
         return nullptr;
     }
 
+////////////////////////////////////////////////////////////////////////////////
+// Node Callbacks
+////////////////////////////////////////////////////////////////////////////////
+
     // Set on a LightSource. Adds the light source to its light manager for the current frame.
     // This allows us to keep track of the current lights in the scene graph without tying creation & destruction to the manager.
     class CollectLightCallback : public osg::NodeCallback
@@ -460,6 +421,42 @@ namespace SceneUtil
         size_t mLastFrameNumber;
     };
 
+    class LightManagerStateAttribute : public osg::StateAttribute
+    {
+    public:
+        LightManagerStateAttribute() : mLightManager(nullptr) {}
+        LightManagerStateAttribute(LightManager* lightManager) : mLightManager(lightManager) {} 
+
+        LightManagerStateAttribute(const LightManagerStateAttribute& copy,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY)
+            : osg::StateAttribute(copy,copyop),mLightManager(copy.mLightManager) {}
+
+        int compare(const StateAttribute &sa) const override
+        {
+            throw std::runtime_error("LightManagerStateAttribute::compare: unimplemented");
+        }
+
+        META_StateAttribute(NifOsg, LightManagerStateAttribute, osg::StateAttribute::LIGHT)
+
+        void apply(osg::State& state) const override
+        {
+            osg::Matrix modelViewMatrix = state.getModelViewMatrix();
+            
+            state.applyModelViewMatrix(state.getInitialViewMatrix());
+                                    
+            for (size_t i = 0; i < mLightManager->mPointLightProxyData.size(); i++)
+            {
+                auto& data = mLightManager->mPointLightProxyData[i];
+                auto pos = data.mPosition * state.getInitialViewMatrix();
+                pos[3] = data.mBrightness;
+                mLightManager->mPointBuffer->setValue(i, PointLightBuffer::Position, pos);
+            }
+            state.applyModelViewMatrix(modelViewMatrix);
+            mLightManager->mPointBuffer->dirty();
+        }
+
+        LightManager* mLightManager;
+    };
+
     LightManager::LightManager(bool ffp)
         : mStartLight(0)
         , mLightingMask(~0u)
@@ -467,28 +464,44 @@ namespace SceneUtil
         , mSunBuffer(nullptr)
         , mFFP(ffp)
     {
-        setUpdateCallback(new LightManagerUpdateCallback);
-
         if (usingFFP())
         {
             for (int i=0; i<getMaxLights(); ++i)
                 mDummies.push_back(new FFPLightStateAttribute(i, std::vector<osg::ref_ptr<osg::Light> >()));
+            setUpdateCallback(new LightManagerUpdateCallback);
             return;
         }
 
         auto* stateset = getOrCreateStateSet();
 
-        mSunBuffer = new SunlightBuffer();
-        osg::ref_ptr<osg::UniformBufferObject> ubo = new osg::UniformBufferObject;
-        mSunBuffer->getData()->setBufferObject(ubo);
-        osg::ref_ptr<osg::UniformBufferBinding> ubb = new osg::UniformBufferBinding(9 , mSunBuffer->getData().get(), 0, mSunBuffer->blockSize());
-        stateset->setAttributeAndModes(ubb.get(), osg::StateAttribute::ON);
+        { // sunlight UBO data
+            mSunBuffer = new SunlightBuffer();
+            osg::ref_ptr<osg::UniformBufferObject> ubo = new osg::UniformBufferObject;
+            mSunBuffer->getData()->setBufferObject(ubo);
+            osg::ref_ptr<osg::UniformBufferBinding> ubb = new osg::UniformBufferBinding(0, mSunBuffer->getData().get(), 0, mSunBuffer->getData()->getTotalDataSize());
+            stateset->setAttributeAndModes(ubb.get(), osg::StateAttribute::ON);
+        }
+
+        { // point lights UBO data
+            mPointBuffer = new PointLightBuffer(getMaxLightsInScene());
+            osg::ref_ptr<osg::UniformBufferObject> ubo = new osg::UniformBufferObject;
+            mPointBuffer->getData()->setBufferObject(ubo);
+            osg::ref_ptr<osg::UniformBufferBinding> ubb = new osg::UniformBufferBinding(1, mPointBuffer->getData().get(), 0, mPointBuffer->getData()->getTotalDataSize());
+            stateset->setAttributeAndModes(ubb.get(), osg::StateAttribute::ON);
+        }
+
+        mPointLightProxyData.resize(getMaxLightsInScene());
 
+        stateset->setMode(GL_LIGHTING, osg::StateAttribute::OFF|osg::StateAttribute::OVERRIDE);
+        stateset->setAttribute(new LightManagerStateAttribute(this), osg::StateAttribute::ON);
         stateset->addUniform(new osg::Uniform("PointLightCount", 0));
 
+        setUpdateCallback(new LightManagerUpdateCallback);
         addCullCallback(new SunlightCallback(this));
     }
 
+////////////////////////////////////////////////////////////////////////////////
+
     LightManager::LightManager(const LightManager &copy, const osg::CopyOp &copyop)
         : osg::Group(copy, copyop)
         , mStartLight(copy.mStartLight)
@@ -507,7 +520,7 @@ namespace SceneUtil
     int LightManager::getMaxLights() const
     {
         if (usingFFP()) return LightManager::mFFPMaxLights;
-        return std::clamp(Settings::Manager::getInt("max lights", "Shaders"), 0, getMaxLightsInScene());
+        return std::clamp(Settings::Manager::getInt("max lights", "Shaders"),LightManager::mFFPMaxLights , getMaxLightsInScene());
     }
 
     int LightManager::getMaxLightsInScene() const
@@ -579,16 +592,18 @@ namespace SceneUtil
     }
 
     void LightManager::update()
-    {
+    {   
         mLights.clear();
         mLightsInViewSpace.clear();
 
-        // do an occasional cleanup for orphaned lights
+        // Do an occasional cleanup for orphaned lights.
         for (int i=0; i<2; ++i)
         {
-            if (mStateSetCache[i].size() > 5000)
+            if (mStateSetCache[i].size() > 5000 || mIndexNeedsRecompiling)
                 mStateSetCache[i].clear();
         }
+
+        mIndexNeedsRecompiling = false;
     }
 
     void LightManager::addLight(LightSource* lightSource, const osg::Matrixf& worldMat, size_t frameNum)
@@ -599,7 +614,8 @@ namespace SceneUtil
         lightSource->getLight(frameNum)->setPosition(osg::Vec4f(worldMat.getTrans().x(),
                                                         worldMat.getTrans().y(),
                                                         worldMat.getTrans().z(), 1.f));
-        mLights.push_back(l);
+        if (mLights.size() < static_cast<size_t>(getMaxLightsInScene()))
+            mLights.emplace_back(l);
     }
 
     void LightManager::setSunlight(osg::ref_ptr<osg::Light> sun)
@@ -627,20 +643,21 @@ namespace SceneUtil
             hash_combine(hash, lightList[i]->mLightSource->getId());
 
         LightStateSetMap& stateSetCache = mStateSetCache[frameNum%2];
-
+        
         LightStateSetMap::iterator found = stateSetCache.find(hash);
         if (found != stateSetCache.end())
             return found->second;
         else
         {
             osg::ref_ptr<osg::StateSet> stateset = new osg::StateSet;
-            std::vector<osg::ref_ptr<osg::Light> > lights;
-            lights.reserve(lightList.size());
-            for (size_t i=0; i<lightList.size();++i)
-                lights.emplace_back(lightList[i]->mLightSource->getLight(frameNum));
 
             if (usingFFP())
             {
+                std::vector<osg::ref_ptr<osg::Light> > lights;
+                lights.reserve(lightList.size());
+                for (size_t i=0; i<lightList.size();++i)
+                    lights.emplace_back(lightList[i]->mLightSource->getLight(frameNum));
+
                 // the first light state attribute handles the actual state setting for all lights
                 // it's best to batch these up so that we don't need to touch the modelView matrix more than necessary
                 // don't use setAttributeAndModes, that does not support light indices!
@@ -656,14 +673,18 @@ namespace SceneUtil
             }
             else
             {
-                osg::ref_ptr<PointLightBuffer> buffer = new PointLightBuffer(lights.size());
-                osg::ref_ptr<osg::UniformBufferObject> ubo = new osg::UniformBufferObject;
-                buffer->getData()->setBufferObject(ubo);
-                osg::ref_ptr<osg::UniformBufferBinding> ubb = new osg::UniformBufferBinding(8 ,buffer->getData().get(), 0, buffer->blockSize());
-                stateset->addUniform(new osg::Uniform("PointLightCount", (int)lights.size()));
-                stateset->setAttributeAndModes(ubb.get(), osg::StateAttribute::ON);
-
-                stateset->setAttribute(new LightStateAttribute(std::move(lights), buffer), osg::StateAttribute::ON);
+                osg::ref_ptr<osg::IntArray> indices = new osg::IntArray(getMaxLights());
+                osg::ref_ptr<osg::Uniform> indicesUni = new osg::Uniform(osg::Uniform::Type::INT, "PointLightIndex", indices->size());
+                int validCount = 0;
+                for (size_t i = 0; i < lightList.size(); ++i)
+                {
+                    auto it = mLightData.find(lightList[i]->mLightSource->getId());
+                    if (it != mLightData.end())
+                        indices->at(validCount++) = it->second;
+                }
+                indicesUni->setArray(indices);
+                stateset->addUniform(indicesUni);
+                stateset->addUniform(new osg::Uniform("PointLightCount", validCount));
             }
 
             stateSetCache.emplace(hash, stateset);
@@ -671,11 +692,6 @@ namespace SceneUtil
         }
     }
 
-    const std::vector<LightManager::LightSourceTransform>& LightManager::getLights() const
-    {
-        return mLights;
-    }
-
     const std::vector<LightManager::LightSourceViewBound>& LightManager::getLightsInViewSpace(osg::Camera *camera, const osg::RefMatrix* viewMatrix, size_t frameNum)
     {
         osg::observer_ptr<osg::Camera> camPtr (camera);
@@ -695,13 +711,47 @@ namespace SceneUtil
                 l.mLightSource = lightIt->mLightSource;
                 l.mViewBound = viewBound;
                 it->second.push_back(l);
+
+                if (usingFFP()) continue;
+
+                auto* light = l.mLightSource->getLight(frameNum);
+
+                auto dataIt = mLightData.find(l.mLightSource->getId());
+                if (dataIt != mLightData.end())
+                {
+                    mPointLightProxyData[dataIt->second].mPosition = light->getPosition();
+                    mPointLightProxyData[dataIt->second].mBrightness = l.mLightSource->getBrightness(frameNum);
+                    mPointBuffer->setValue(dataIt->second, PointLightBuffer::Diffuse, light->getDiffuse());
+                    continue;
+                }
+
+                if (mLightData.size() >= static_cast<size_t>(getMaxLightsInScene()))
+                {
+                    mIndexNeedsRecompiling = true;
+                    mLightData.clear();
+                }
+
+                int index = mLightData.size();
+                updateGPUPointLight(index, l.mLightSource, frameNum);
+                mLightData.emplace(l.mLightSource->getId(), index);
             }
         }
         return it->second;
     }
 
+    void LightManager::updateGPUPointLight(int index, LightSource* lightSource, size_t frameNum)
+    {
+        auto* light = lightSource->getLight(frameNum);
+        mPointLightProxyData[index].mPosition = light->getPosition();
+        mPointLightProxyData[index].mBrightness = lightSource->getBrightness(frameNum);
+        mPointBuffer->setValue(index, PointLightBuffer::Diffuse, light->getDiffuse());
+        mPointBuffer->setValue(index, PointLightBuffer::Ambient, light->getAmbient());
+        mPointBuffer->setValue(index, PointLightBuffer::Attenuation, osg::Vec4(light->getConstantAttenuation(), light->getLinearAttenuation(), light->getQuadraticAttenuation(), lightSource->getRadius()));
+    }
+
     LightSource::LightSource()
         : mRadius(0.f)
+        , mBrightness{1.0,1.0}
     {
         setUpdateCallback(new CollectLightCallback);
         mId = sLightId++;
@@ -753,7 +803,7 @@ namespace SceneUtil
             // Don't use Camera::getViewMatrix, that one might be relative to another camera!
             const osg::RefMatrix* viewMatrix = cv->getCurrentRenderStage()->getInitialViewMatrix();
             const std::vector<LightManager::LightSourceViewBound>& lights = mLightManager->getLightsInViewSpace(cv->getCurrentCamera(), viewMatrix, mLastFrameNumber);
-
+            
             // get the node bounds in view space
             // NB do not node->getBound() * modelView, that would apply the node's transformation twice
             osg::BoundingSphere nodeBound;
@@ -818,7 +868,6 @@ namespace SceneUtil
             else
                 stateset = mLightManager->getLightListStateSet(mLightList, cv->getTraversalNumber());
 
-
             cv->pushStateSet(stateset);
             return true;
         }

components/sceneutil/lightmanager.hpp

@@ -2,13 +2,15 @@
 #define OPENMW_COMPONENTS_SCENEUTIL_LIGHTMANAGER_H
 
 #include <set>
+#include <cassert>
+#include <unordered_map>
+#include <unordered_set>
 
 #include <osg/Light>
 
 #include <osg/Group>
 #include <osg/NodeVisitor>
 #include <osg/observer_ptr>
-#include <osg/BufferIndexBinding>
 
 #include <components/shader/shadermanager.hpp>
 
@@ -17,9 +19,16 @@ namespace osgUtil
     class CullVisitor;
 }
 
+namespace osg
+{
+    class UniformBufferBinding;
+    class UniformBufferObject;
+}
+
 namespace SceneUtil
 {
     class SunlightBuffer;
+    class PointLightBuffer;
 
     // Used to override sun. Rarely useful but necassary for local map. 
     class SunlightStateAttribute : public osg::StateAttribute
@@ -59,6 +68,8 @@ namespace SceneUtil
 
         int mId;
 
+        float mBrightness[2];
+
     public:
 
         META_Node(SceneUtil, LightSource)
@@ -78,6 +89,16 @@ namespace SceneUtil
             mRadius = radius;
         }
 
+        float getBrightness(size_t frame)
+        {
+            return mBrightness[frame % 2];
+        }
+
+        void setBrightness(size_t frame, float brightness)
+        {
+            mBrightness[frame % 2] = brightness;
+        }
+
         /// Get the osg::Light safe for modification in the given frame.
         /// @par May be used externally to animate the light's color/attenuation properties,
         /// and is used internally to synchronize the light's position with the position of the LightSource.
@@ -119,7 +140,7 @@ namespace SceneUtil
             osg::BoundingSphere mViewBound;
         };
 
-        typedef std::vector<const LightSourceViewBound*> LightList;
+        using LightList = std::vector<const LightSourceViewBound*>;
 
         static bool queryNonFFPLightingSupport();
 
@@ -146,8 +167,6 @@ namespace SceneUtil
         /// Internal use only, called automatically by the LightSource's UpdateCallback
         void addLight(LightSource* lightSource, const osg::Matrixf& worldMat, size_t frameNum);
 
-        const std::vector<LightSourceTransform>& getLights() const;
-
         const std::vector<LightSourceViewBound>& getLightsInViewSpace(osg::Camera* camera, const osg::RefMatrix* viewMatrix, size_t frameNum);
 
         osg::ref_ptr<osg::StateSet> getLightListStateSet(const LightList& lightList, size_t frameNum);
@@ -165,6 +184,11 @@ namespace SceneUtil
         Shader::ShaderManager::DefineMap getLightDefines() const;
 
     private:
+
+        friend class LightManagerStateAttribute;
+
+        void updateGPUPointLight(int index, LightSource* lightSource, size_t frameNum);
+
         // Lights collected from the scene graph. Only valid during the cull traversal.
         std::vector<LightSourceTransform> mLights;
 
@@ -184,6 +208,21 @@ namespace SceneUtil
         osg::ref_ptr<osg::Light> mSun;
         osg::ref_ptr<SunlightBuffer> mSunBuffer;
 
+        struct PointLightProxyData
+        {
+            osg::Vec4 mPosition;
+            float mBrightness;
+        };
+
+        std::vector<PointLightProxyData> mPointLightProxyData;
+        osg::ref_ptr<PointLightBuffer> mPointBuffer;
+
+        // < Light ID , Buffer Index >
+        using LightDataMap = std::unordered_map<int, int>;
+        LightDataMap mLightData;
+
+        bool mIndexNeedsRecompiling;
+        
         bool mFFP;
 
         static constexpr int mFFPMaxLights = 8;

components/sceneutil/lightutil.cpp

@@ -58,7 +58,7 @@ namespace SceneUtil
         light->setQuadraticAttenuation(quadraticAttenuation);
     }
 
-    void addLight (osg::Group* node, const ESM::Light* esmLight, unsigned int partsysMask, unsigned int lightMask, bool isExterior)
+    void addLight (osg::Group* node, const ESM::Light* esmLight, unsigned int partsysMask, unsigned int lightMask, bool isExterior, bool useFFPLighting)
     {
         SceneUtil::FindByNameVisitor visitor("AttachLight");
         node->accept(visitor);
@@ -85,17 +85,21 @@ namespace SceneUtil
             attachTo = trans;
         }
 
-        osg::ref_ptr<LightSource> lightSource = createLightSource(esmLight, lightMask, isExterior);
+        osg::ref_ptr<LightSource> lightSource = createLightSource(esmLight, lightMask, isExterior, osg::Vec4f(0,0,0,1), useFFPLighting);
         attachTo->addChild(lightSource);
     }
 
-    osg::ref_ptr<LightSource> createLightSource(const ESM::Light* esmLight, unsigned int lightMask, bool isExterior, const osg::Vec4f& ambient)
+    osg::ref_ptr<LightSource> createLightSource(const ESM::Light* esmLight, unsigned int lightMask, bool isExterior, const osg::Vec4f& ambient, bool useFFPLighting)
     {
         osg::ref_ptr<SceneUtil::LightSource> lightSource (new SceneUtil::LightSource);
         osg::ref_ptr<osg::Light> light (new osg::Light);
         lightSource->setNodeMask(lightMask);
 
         float radius = esmLight->mData.mRadius;
+        // arbitrary multipler to reduce light popping, this is hard to avoid with per-object lighting
+        // we offset this multipler in shaders
+        if (!useFFPLighting)
+            radius *= 2.0;
         lightSource->setRadius(radius);
 
         configureLight(light, radius, isExterior);
@@ -112,7 +116,7 @@ namespace SceneUtil
 
         lightSource->setLight(light);
 
-        osg::ref_ptr<SceneUtil::LightController> ctrl (new SceneUtil::LightController);
+        osg::ref_ptr<SceneUtil::LightController> ctrl (new SceneUtil::LightController(useFFPLighting));
         ctrl->setDiffuse(light->getDiffuse());
         if (esmLight->mData.mFlags & ESM::Light::Flicker)
             ctrl->setType(SceneUtil::LightController::LT_Flicker);

components/sceneutil/lightutil.hpp

@@ -32,14 +32,14 @@ namespace SceneUtil
     /// @param partsysMask Node mask to ignore when computing the sub graph's bounding box.
     /// @param lightMask Mask to assign to the newly created LightSource.
     /// @param isExterior Is the light outside? May be used for deciding which attenuation settings to use.
-    void addLight (osg::Group* node, const ESM::Light* esmLight, unsigned int partsysMask, unsigned int lightMask, bool isExterior);
+    void addLight (osg::Group* node, const ESM::Light* esmLight, unsigned int partsysMask, unsigned int lightMask, bool isExterior, bool useFFPLighting=true);
 
     /// @brief Convert an ESM::Light to a SceneUtil::LightSource, and return it.
     /// @param esmLight The light definition coming from the game files containing radius, color, flicker, etc.
     /// @param lightMask Mask to assign to the newly created LightSource.
     /// @param isExterior Is the light outside? May be used for deciding which attenuation settings to use.
     /// @param ambient Ambient component of the light.
-    osg::ref_ptr<LightSource> createLightSource (const ESM::Light* esmLight, unsigned int lightMask, bool isExterior, const osg::Vec4f& ambient=osg::Vec4f(0,0,0,1));
+    osg::ref_ptr<LightSource> createLightSource (const ESM::Light* esmLight, unsigned int lightMask, bool isExterior, const osg::Vec4f& ambient=osg::Vec4f(0,0,0,1), bool useFFPLighting=true);
 
 }
 

components/shader/shadermanager.cpp

@@ -17,10 +17,9 @@
 namespace Shader
 {
 
-    ShaderManager::ShaderManager(Resource::SceneManager* sceneManager)
-        : mSceneManager(sceneManager)
+    ShaderManager::ShaderManager()
+        : mFFPLighting(false)
     {
-
     }
 
     void ShaderManager::setShaderPath(const std::string &path)
@@ -28,6 +27,11 @@ namespace Shader
         mPath = path;
     }
 
+    void ShaderManager::setFFPLighting(bool useFFP)
+    {
+        mFFPLighting = useFFP;
+    }
+
     bool addLineDirectivesAfterConditionalBlocks(std::string& source)
     {
         for (size_t position = 0; position < source.length(); )
@@ -352,10 +356,10 @@ namespace Shader
             program->addShader(fragmentShader);
             program->addBindAttribLocation("aOffset", 6);
             program->addBindAttribLocation("aRotation", 7);
-            if (!mSceneManager->getFFPLighting())
+            if (!mFFPLighting)
             {
-                program->addBindUniformBlock("PointLightBuffer", 8);
-                program->addBindUniformBlock("SunlightBuffer", 9);
+                program->addBindUniformBlock("SunlightBuffer", 0);
+                program->addBindUniformBlock("PointLightBuffer", 1);
             }
             found = mPrograms.insert(std::make_pair(std::make_pair(vertexShader, fragmentShader), program)).first;
         }

components/shader/shadermanager.hpp

@@ -25,10 +25,12 @@ namespace Shader
     {
     public:
 
-        ShaderManager(Resource::SceneManager* sceneManager);
+        ShaderManager();
 
         void setShaderPath(const std::string& path);
 
+        void setFFPLighting(bool useFFP);
+
         typedef std::map<std::string, std::string> DefineMap;
 
         /// Create or retrieve a shader instance.
@@ -67,7 +69,7 @@ namespace Shader
         typedef std::map<std::pair<osg::ref_ptr<osg::Shader>, osg::ref_ptr<osg::Shader> >, osg::ref_ptr<osg::Program> > ProgramMap;
         ProgramMap mPrograms;
 
-        Resource::SceneManager* mSceneManager;
+        bool mFFPLighting;
 
         std::mutex mMutex;
     };

files/shaders/lighting.glsl

@@ -6,19 +6,21 @@
 
 struct PointLight
 {
+    vec4 position;
     vec4 diffuse;
     vec4 ambient;
-    vec4 position;
-    vec4 attenuation;
+    float constantAttenuation;
+    float linearAttenuation;
+    float quadraticAttenuation;
+    float radius;
 };
 
-uniform mat4 osg_ViewMatrix;
 uniform int PointLightCount;
 uniform int PointLightIndex[@maxLights];
 
 layout(std140) uniform PointLightBuffer
 {
-    PointLight PointLights[@maxLights];
+    PointLight PointLights[@maxLightsInScene];
 };
 
 #else
@@ -47,15 +49,26 @@ void perLightSun(out vec3 ambientOut, out vec3 diffuseOut, vec3 viewPos, vec3 vi
     diffuseOut = @sunDiffuse.xyz * lambert;
 }
 
+
+uniform float osg_SimulationTime;
 void perLightPoint(out vec3 ambientOut, out vec3 diffuseOut, int lightIndex, vec3 viewPos, vec3 viewNormal)
 {
-    vec3 lightDir = getLight[lightIndex].position.xyz - viewPos;
-    //vec3 lightDir = (osg_ViewMatrix * vec4(getLight[lightIndex].position, 1.0)).xyz - viewPos;
+    vec4 pos = getLight[lightIndex].position;
+    vec3 lightDir = pos.xyz - viewPos;
 
     float lightDistance = length(lightDir);
     lightDir = normalize(lightDir);
 
-    float illumination = clamp(1.0 / (getLight[lightIndex].attenuation.x + getLight[lightIndex].attenuation.y * lightDistance + getLight[lightIndex].attenuation.z * lightDistance * lightDistance), 0.0, 1.0);
+    float illumination = clamp(1.0 / (getLight[lightIndex].constantAttenuation + getLight[lightIndex].linearAttenuation * lightDistance + getLight[lightIndex].quadraticAttenuation * lightDistance * lightDistance), 0.0, 1.0);
+
+// Add an artificial cutoff, otherwise effected objects will be brightly lit and adjacent objects not effected by this light will be dark by contrast
+// This causes nasty artifacts, especially with active grid so it is necassary for now. 
+#if !@ffpLighting
+    float cutoff = getLight[lightIndex].radius * 0.5;
+    illumination *= 1.0 - smoothstep(0.0, 1.0, ((lightDistance / cutoff) - 1.0) * 0.887);
+    illumination = max(0.0, illumination);
+#endif
+
     ambientOut = getLight[lightIndex].ambient.xyz * illumination;
 
     float lambert = dot(viewNormal.xyz, lightDir) * illumination;
@@ -70,7 +83,12 @@ void perLightPoint(out vec3 ambientOut, out vec3 diffuseOut, int lightIndex, vec
     }
     lambert *= clamp(-8.0 * (1.0 - 0.3) * eyeCosine + 1.0, 0.3, 1.0);
 #endif
+
+#if @ffpLighting
     diffuseOut = getLight[lightIndex].diffuse.xyz * lambert;
+#else
+    diffuseOut = (getLight[lightIndex].diffuse.xyz * pos.w) * lambert;
+#endif
 }
 
 #if PER_PIXEL_LIGHTING
@@ -97,7 +115,7 @@ void doLighting(vec3 viewPos, vec3 viewNormal, out vec3 diffuseLight, out vec3 a
     diffuseLight += diffuseOut;
     for (int i=0; i<PointLightCount; ++i)
     {
-        perLightPoint(ambientOut, diffuseOut, i, viewPos, viewNormal);
+        perLightPoint(ambientOut, diffuseOut, PointLightIndex[i], viewPos, viewNormal);
 #else
     for (int i=0; i<@maxLights; ++i)
     {