Merge pull request #1478 from Areloch/VolFog2

Volumetric Fog Take 2

Engine/source/environment/VolumetricFog.h

@@ -0,0 +1,243 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+   
+#ifndef _VolumetricFog_H_
+#define _VolumetricFog_H_
+   
+#ifndef _SCENEOBJECT_H_
+#include "scene/sceneObject.h"
+#endif
+#ifndef _MATTEXTURETARGET_H_
+#include "materials/matTextureTarget.h"
+#endif
+#ifndef _GFXSHADER_H_
+#include "gfx/gfxShader.h"
+#endif
+#ifndef _GFXTARGET_H_
+#include "gfx/gfxTarget.h"
+#endif
+#ifndef _GFXVERTEXBUFFER_H_
+#include "gfx/gfxVertexBuffer.h"
+#endif
+#ifndef _TSSHAPE_H_
+#include "ts/tsShape.h"
+#endif
+#ifndef _POST_EFFECT_H_
+#include "postFx/postEffect.h"
+#endif
+   
+#include "gui/core/guiCanvas.h"
+   
+class VolumetricFogRTManager;
+   
+class VolumetricFog : public SceneObject
+{
+   typedef SceneObject Parent;
+   
+   // Maskbits for updating
+   enum
+   {
+      VolumetricFogMask = Parent::NextFreeMask,
+      FogColorMask = Parent::NextFreeMask << 1,
+      FogDensityMask = Parent::NextFreeMask << 2,
+      FogModulationMask = Parent::NextFreeMask << 3,
+      FogPostFXMask = Parent::NextFreeMask << 4,
+      FogShapeMask = Parent::NextFreeMask << 5,
+      NextFreeMask = Parent::NextFreeMask << 6
+   };
+   
+// Struct which holds the shape details
+   struct meshes
+   {
+      F32 det_size;
+      S32 sub_shape;
+      S32 obj_det;
+      U32 num_verts;
+      GFXVertexPNTT *verts;
+      Vector <GFXPrimitive> *piArray;
+      Vector <U32> *indices;
+   };
+   
+   protected:
+      // Rendertargets;
+      GFXTextureTargetRef z_buf;
+      NamedTexTargetRef mPrepassTarget;
+      NamedTexTargetRef mDepthBufferTarget;
+      NamedTexTargetRef mFrontBufferTarget;
+   
+      // Fog Modulation texture
+      GFXTexHandle mTexture;
+   
+      // Shaders
+      GFXShaderRef mShader;
+      GFXShaderRef mPrePassShader;
+      GFXShaderRef mReflectionShader;
+   
+      // Stateblocks
+      GFXStateBlockDesc descD;
+      GFXStateBlockDesc descF;
+      GFXStateBlockDesc desc_preD;
+      GFXStateBlockDesc desc_preF;
+      GFXStateBlockDesc desc_refl;
+   
+      GFXStateBlockRef mStateblockD;
+      GFXStateBlockRef mStateblockF;
+      GFXStateBlockRef mStateblock_preD;
+      GFXStateBlockRef mStateblock_preF;
+      GFXStateBlockRef mStateblock_refl;
+   
+      // Shaderconstants
+      GFXShaderConstBufferRef mShaderConsts;
+      GFXShaderConstHandle *mModelViewProjSC;
+      GFXShaderConstHandle *mFadeSizeSC;
+      GFXShaderConstHandle *mFogColorSC;
+      GFXShaderConstHandle *mFogDensitySC;
+      GFXShaderConstHandle *mPreBias;
+      GFXShaderConstHandle *mAccumTime;
+      GFXShaderConstHandle *mIsTexturedSC;
+      GFXShaderConstHandle *mModSpeedSC;
+      GFXShaderConstHandle *mModStrengthSC;
+      GFXShaderConstHandle *mViewPointSC;
+      GFXShaderConstHandle *mTexScaleSC;
+      GFXShaderConstHandle *mTexTilesSC;
+   
+      GFXShaderConstBufferRef mPPShaderConsts;
+      GFXShaderConstHandle *mPPModelViewProjSC;
+
+      GFXShaderConstHandle *mAmbientColorSC;
+   
+      GFXShaderConstBufferRef mReflShaderConsts;
+      GFXShaderConstHandle *mReflModelViewProjSC;
+      GFXShaderConstHandle *mReflFogColorSC;
+      GFXShaderConstHandle *mReflFogDensitySC;
+      GFXShaderConstHandle *mReflFogStrengthSC;
+   
+      // Vertex and Prim. Buffer
+      GFXVertexBufferHandle<GFXVertexPNTT> mVB;
+      GFXPrimitiveBufferHandle mPB;
+   
+      // Fog volume data;
+      StringTableEntry mShapeName;
+      ColorI mFogColor;
+      F32 mFogDensity;
+      bool mIgnoreWater;
+      bool mReflect;
+      Vector<meshes> det_size;
+      bool mShapeLoaded;
+      F32 mPixelSize;
+      F32 mFadeSize;
+      U32 mCurDetailLevel;
+      U32 mNumDetailLevels;
+      F32 mObjSize;
+      F32 mRadius;
+      OrientedBox3F ColBox;
+      VectorF mObjScale;
+      F32 mMinDisplaySize;
+      F32 mInvScale;
+   
+      // Fog Modulation data
+      String mTextureName;
+      bool mIsTextured;
+      F32 mTexTiles;
+      F32 mStrength;
+      Point2F mSpeed1;
+      Point2F mSpeed2;
+      Point4F mSpeed;
+      Point2F mTexScale;
+   
+      // Fog Rendering data
+      Point3F camPos;
+      Point2F mViewPoint;
+      F32 mFOV;
+      F32 viewDist;
+      bool mIsVBDirty;
+      bool mIsPBDirty;
+      bool mCamInFog;
+      bool mResizing;
+      PlatformWindow *mPlatformWindow;
+   
+      // Reflections
+      F32 mFogReflStrength;
+   
+      // PostFX
+      PostEffect *glowFX;
+      bool mUseGlow;
+      F32 mGlowStrength;
+      U8 mGlowing;
+      F32 mCurGlow;
+   
+      bool mModifLightRays;
+      F32 mLightRayMod;
+      F32 mOldLightRayStrength;
+   
+      GameConnection* conn;
+      U32 mCounter;
+   
+      void ResizeRT(PlatformWindow *win, bool resize);
+   
+   protected:
+      // Protected methods
+      bool onAdd();
+      void onRemove();
+      void handleResize(VolumetricFogRTManager *RTM, bool resize);
+      void handleCanvasResize(GuiCanvas* canvas);
+   
+      bool LoadShape();
+      bool setupRenderer();
+      void InitTexture();
+      bool UpdateBuffers(U32 dl,bool force=true);
+   
+      void processTick(const Move *move);
+      void _enterFog(ShapeBase *control);
+      void _leaveFog(ShapeBase *control);
+   
+   public:
+      // Public methods
+      VolumetricFog();
+      ~VolumetricFog();
+   
+      static void initPersistFields();
+      virtual void inspectPostApply();
+   
+      U32 packUpdate(NetConnection *conn, U32 mask, BitStream *stream);
+      void unpackUpdate(NetConnection *conn, BitStream *stream);
+   
+      void prepRenderImage(SceneRenderState* state);
+      void render(ObjectRenderInst *ri, SceneRenderState *state, BaseMatInstance *overrideMat);
+      void reflect_render(ObjectRenderInst *ri, SceneRenderState *state, BaseMatInstance *overrideMat);
+   
+      // Methods for modifying & networking various fog elements
+      // Used in script
+      void setFogColor(ColorF color);
+      void setFogColor(ColorI color);
+      void setFogDensity(F32 density);
+      void setFogModulation(F32 strength, Point2F speed1, Point2F speed2);
+      void setFogGlow(bool on_off, F32 strength);
+      void setFogLightray(bool on_off, F32 strength);
+      bool isInsideFog();
+   
+      DECLARE_CONOBJECT(VolumetricFog);
+   
+      DECLARE_CALLBACK(void, onEnterFog, (SimObjectId obj));
+      DECLARE_CALLBACK(void, onLeaveFog, (SimObjectId obj));
+};
+#endif

Engine/source/environment/VolumetricFogRTManager.cpp

@@ -0,0 +1,299 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+   
+//-----------------------------------------------------------------------------
+// Volumetric Fog Rendertarget Manager
+//
+// Creates and maintains one set of rendertargets to be used by every
+// VolumetricFog object in the scene.
+//
+// Will be loaded at startup end removed when ending game.
+//
+//-----------------------------------------------------------------------------
+   
+#include "VolumetricFogRTManager.h"
+#include "core/module.h"
+#include "scene/sceneManager.h"
+#include "windowManager/platformWindowMgr.h"
+#include "console/engineAPI.h"
+#include "gui/core/guiCanvas.h"
+   
+MODULE_BEGIN(VolumetricFogRTManager)
+   
+MODULE_INIT_AFTER(Scene)
+MODULE_SHUTDOWN_BEFORE(Scene)
+   
+MODULE_INIT
+{
+   gVolumetricFogRTManager = new VolumetricFogRTManager;
+   gClientSceneGraph->addObjectToScene(gVolumetricFogRTManager);
+}
+   
+MODULE_SHUTDOWN
+{
+   gClientSceneGraph->removeObjectFromScene(gVolumetricFogRTManager);
+   SAFE_DELETE(gVolumetricFogRTManager);
+}
+   
+MODULE_END;
+   
+ConsoleDocClass( VolumetricFogRTManager,
+"@brief Creates and maintains one set of rendertargets to be used by every\n"
+"VolumetricFog object in the scene.\n\n"
+"Will be loaded at startup end removed when ending game.\n\n"
+"Methods:\n"
+" get() returns the currently loaded VolumetricFogRTManager, also accessible\n"
+" through VFRTM define.\n"
+" Init() Initializes the rendertargets, called when a VolumetricFog object is\n"
+" added to the scene.\n"
+" isInitialed() returns true if Rendertargets are present, false if not, then\n"
+" Init() should be called to create the rendertargets.\n"
+" setQuality(U32 Quality) Normally a rendertarget has the same size as the view,\n"
+" with this method you can scale down the size of it.\n"
+" Be aware that scaling down will introduce renderartefacts.\n"
+"@ingroup Atmosphere"
+);
+   
+VolumetricFogRTMResizeSignal VolumetricFogRTManager::smVolumetricFogRTMResizeSignal;
+   
+VolumetricFogRTManager *gVolumetricFogRTManager = NULL;
+
+S32 VolumetricFogRTManager::mTargetScale = 1;
+   
+IMPLEMENT_CONOBJECT(VolumetricFogRTManager);
+   
+VolumetricFogRTManager::VolumetricFogRTManager()
+{
+   setGlobalBounds();
+   mTypeMask |= EnvironmentObjectType;
+   mNetFlags.set(IsGhost);
+   mIsInitialized = false;
+   mNumFogObjects = 0;
+}
+   
+VolumetricFogRTManager::~VolumetricFogRTManager()
+{
+   if (mFrontTarget.isRegistered())
+      mFrontTarget.unregister();
+   
+   if (mDepthTarget.isRegistered())
+      mDepthTarget.unregister();
+   
+   if (mDepthBuffer.isValid())
+      mDepthBuffer->kill();
+   
+   if (mFrontBuffer.isValid())
+      mFrontBuffer->kill();
+}
+   
+void VolumetricFogRTManager::onSceneRemove()
+{
+   if (mIsInitialized)
+      mPlatformWindow->getScreenResChangeSignal().remove(this, &VolumetricFogRTManager::ResizeRT);
+}
+   
+void VolumetricFogRTManager::onRemove()
+{
+   removeFromScene();
+   Parent::onRemove();
+}
+   
+void VolumetricFogRTManager::consoleInit()
+{
+   Con::addVariable("$pref::VolumetricFog::Quality", TypeS32, &mTargetScale,
+   "The scale of the rendertargets.\n"
+   "@ingroup Rendering\n");
+}
+   
+bool VolumetricFogRTManager::Init()
+{
+   if (mIsInitialized)
+      {
+      Con::errorf("VolumetricFogRTManager allready initialized!!");
+      return true;
+      }
+   
+   GuiCanvas* cv = dynamic_cast<GuiCanvas*>(Sim::findObject("Canvas"));
+   if (cv == NULL)
+   {
+      Con::errorf("VolumetricFogRTManager::Init() - Canvas not found!!");
+      return false;
+   }
+   
+   mPlatformWindow = cv->getPlatformWindow();
+   mPlatformWindow->getScreenResChangeSignal().notify(this,&VolumetricFogRTManager::ResizeRT);
+   
+   if (mTargetScale < 1)
+      mTargetScale = 1;
+   
+   mWidth = mFloor(mPlatformWindow->getClientExtent().x / mTargetScale);
+   mHeight = mPlatformWindow->getClientExtent().y;
+   mFullScreen = mPlatformWindow->isFullscreen();
+   if (!mFullScreen)
+      mHeight -= 20;//subtract caption bar from rendertarget size.
+   mHeight = mFloor(mHeight / mTargetScale);
+   
+   mDepthBuffer = GFXTexHandle(mWidth, mHeight, GFXFormatR32F,
+   &GFXDefaultRenderTargetProfile, avar("%s() - mDepthBuffer (line %d)", __FUNCTION__, __LINE__));
+   if (!mDepthBuffer.isValid())
+   {
+      Con::errorf("VolumetricFogRTManager Fatal Error: Unable to create Depthbuffer");
+      return false;
+   }
+   if (!mDepthTarget.registerWithName("volfogdepth"))
+   {
+      Con::errorf("VolumetricFogRTManager Fatal Error : Unable to register Depthbuffer");
+      return false;
+   }
+   mDepthTarget.setTexture(mDepthBuffer);
+   
+   mFrontBuffer = GFXTexHandle(mWidth, mHeight, GFXFormatR32F,
+   &GFXDefaultRenderTargetProfile, avar("%s() - mFrontBuffer (line %d)", __FUNCTION__, __LINE__));
+   if (!mFrontBuffer.isValid())
+   {
+      Con::errorf("VolumetricFogRTManager Fatal Error: Unable to create front buffer");
+      return false;
+   }
+   if (!mFrontTarget.registerWithName("volfogfront"))
+   {
+      Con::errorf("VolumetricFogRTManager Fatal Error : Unable to register Frontbuffer");
+      return false;
+   }
+   
+   mFrontTarget.setTexture(mFrontBuffer);
+   
+   Con::setVariable("$VolumetricFog::density", "0.0");
+   
+   mIsInitialized = true;
+   
+   return true;
+}
+   
+U32 VolumetricFogRTManager::IncFogObjects()
+{
+   mNumFogObjects++;
+   return mNumFogObjects;
+}
+   
+U32 VolumetricFogRTManager::DecFogObjects()
+{
+   if (mNumFogObjects > 0)
+      mNumFogObjects--;
+   return mNumFogObjects;
+}
+   
+void VolumetricFogRTManager::ResizeRT(PlatformWindow* win,bool resize)
+{
+   mFogHasAnswered = 0;
+   smVolumetricFogRTMResizeSignal.trigger(this, true);
+}
+   
+void VolumetricFogRTManager::FogAnswered()
+{
+   mFogHasAnswered++;
+   if (mFogHasAnswered == mNumFogObjects)
+   {
+      if (Resize())
+         smVolumetricFogRTMResizeSignal.trigger(this, false);
+      else
+         Con::errorf("VolumetricFogRTManager::FogAnswered - Error resizing rendertargets!");
+   }
+}
+   
+bool VolumetricFogRTManager::Resize()
+{
+   if (mTargetScale < 1)
+      mTargetScale = 1;
+   mWidth = mFloor(mPlatformWindow->getClientExtent().x / mTargetScale);
+   mHeight = mPlatformWindow->getClientExtent().y;
+     
+   if (!mPlatformWindow->isFullscreen())
+      mHeight -= 20;//subtract caption bar from rendertarget size.
+   mHeight = mFloor(mHeight / mTargetScale);
+   
+   if (mWidth < 16 || mHeight < 16)
+      return false;
+   
+   if (mFrontTarget.isRegistered())
+      mFrontTarget.setTexture(NULL);
+   
+   if (mDepthTarget.isRegistered())
+      mDepthTarget.setTexture(NULL);
+   
+   if (mDepthBuffer.isValid())
+      mDepthBuffer->kill();
+   
+   if (mFrontBuffer.isValid())
+      mFrontBuffer->kill();
+   
+   mFrontBuffer = GFXTexHandle(mWidth, mHeight, GFXFormatR32F,
+   &GFXDefaultRenderTargetProfile, avar("%s() - mFrontBuffer (line %d)", __FUNCTION__, __LINE__));
+   if (!mFrontBuffer.isValid())
+      {
+      Con::errorf("VolumetricFogRTManager::Resize() Fatal Error: Unable to create front buffer");
+      return false;
+      }
+   mFrontTarget.setTexture(mFrontBuffer);
+   
+   mDepthBuffer = GFXTexHandle(mWidth, mHeight, GFXFormatR32F,
+   &GFXDefaultRenderTargetProfile, avar("%s() - mDepthBuffer (line %d)", __FUNCTION__, __LINE__));
+   if (!mDepthBuffer.isValid())
+      {
+         Con::errorf("VolumetricFogRTManager::Resize() Fatal Error: Unable to create Depthbuffer");
+         return false;
+      }
+   mDepthTarget.setTexture(mDepthBuffer);
+   return true;
+}
+   
+S32 VolumetricFogRTManager::setQuality(U32 Quality)
+{
+   if (!mIsInitialized)
+      return (mTargetScale = Quality);
+      
+   if (Quality < 1)
+      Quality = 1;
+   
+   if (Quality == mTargetScale)
+      return mTargetScale;
+   
+   mTargetScale = Quality;
+   
+   mFogHasAnswered = 0;
+   smVolumetricFogRTMResizeSignal.trigger(this, true);
+   
+   return mTargetScale;
+}
+   
+VolumetricFogRTManager* VolumetricFogRTManager::get()
+{
+   return gVolumetricFogRTManager;
+}
+   
+DefineConsoleFunction(SetFogVolumeQuality, S32, (U32 new_quality), ,
+"@brief Resizes the rendertargets of the Volumetric Fog object.\n"
+"@params new_quality new quality for the rendertargets 1 = full size, 2 = halfsize, 3 = 1/3, 4 = 1/4 ...")
+{
+   if (VFRTM == NULL)
+      return -1;
+   return VFRTM->setQuality(new_quality);
+}

Engine/source/environment/VolumetricFogRTManager.h

@@ -0,0 +1,92 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+   
+#ifndef _VolumetricFogRTManager_H_
+#define _VolumetricFogRTManager_H_
+   
+#ifndef _SCENEOBJECT_H_
+#include "scene/sceneObject.h"
+#endif
+#ifndef _MATTEXTURETARGET_H_
+#include "materials/matTextureTarget.h"
+#endif
+#ifndef _GFXTARGET_H_
+#include "gfx/gfxTarget.h"
+#endif
+#ifndef _SIGNAL_H_
+#include "core/util/tSignal.h"
+#endif
+   
+class VolumetricFogRTManager;
+   
+typedef Signal<void(VolumetricFogRTManager *VolumetricFogRTManager, bool resize)> VolumetricFogRTMResizeSignal;
+   
+#define VFRTM VolumetricFogRTManager::get()
+   
+class VolumetricFogRTManager : public SceneObject
+{
+   public:
+      typedef SceneObject Parent;
+   
+   protected:
+      GFXTexHandle mDepthBuffer;
+      GFXTexHandle mFrontBuffer;
+   
+      NamedTexTarget mDepthTarget;
+      NamedTexTarget mFrontTarget;
+   
+      PlatformWindow* mPlatformWindow;
+   
+      static S32 mTargetScale;
+      bool mIsInitialized;
+      U32 mNumFogObjects;
+      U32 mFogHasAnswered;
+      U32 mWidth;
+      U32 mHeight;
+      bool mFullScreen;
+   
+      void onRemove();
+      void onSceneRemove();
+      void ResizeRT(PlatformWindow *win, bool resize);
+   
+      static VolumetricFogRTMResizeSignal smVolumetricFogRTMResizeSignal;
+
+   public:
+      VolumetricFogRTManager();
+      ~VolumetricFogRTManager();
+      static VolumetricFogRTManager *get();
+      bool Init();
+      bool IsInitialized() { return mIsInitialized; }
+      static void consoleInit();
+      static VolumetricFogRTMResizeSignal& getVolumetricFogRTMResizeSignal() { return smVolumetricFogRTMResizeSignal; }
+      void FogAnswered();
+      S32 setQuality(U32 Quality);
+      bool Resize();
+      U32 IncFogObjects();
+      U32 DecFogObjects();
+   
+   DECLARE_CONOBJECT(VolumetricFogRTManager);
+};
+   
+extern VolumetricFogRTManager* gVolumetricFogRTManager;
+   
+#endif

Engine/source/gui/core/guiCanvas.cpp

@@ -321,8 +321,11 @@ void GuiCanvas::setWindowTitle(const char *newTitle)
       mPlatformWindow->setCaption(newTitle);
 }
 
+CanvasSizeChangeSignal GuiCanvas::smCanvasSizeChangeSignal;
+
 void GuiCanvas::handleResize( WindowId did, S32 width, S32 height )
 {
+   getCanvasSizeChangeSignal().trigger(this);
 	if (Journal::IsPlaying() && mPlatformWindow)
 	{
 		mPlatformWindow->lockSize(false);

Engine/source/gui/core/guiCanvas.h

@@ -33,6 +33,10 @@
 #include "platform/platformInput.h"
 #endif
 
+#ifndef _SIGNAL_H_
+#include "core/util/tSignal.h"
+#endif
+
 #include "component/interfaces/IProcessInput.h"
 #include "windowManager/platformWindowMgr.h"
 #include "gfx/gfxFence.h"
@@ -74,6 +78,8 @@
 /// screen will be painted normally. If you are making an animated GuiControl
 /// you need to add your control to the dirty areas of the canvas.
 ///
+class guiCanvas;
+typedef Signal<void(GuiCanvas* canvas)> CanvasSizeChangeSignal;
 class GuiCanvas : public GuiControl, public IProcessInput
 {
 
@@ -183,6 +189,8 @@ protected:
    virtual void setupFences();
    
    void checkLockMouseMove( const GuiEvent& event );
+   //Signal used to let others know this canvas has changed size.
+	static CanvasSizeChangeSignal smCanvasSizeChangeSignal;
 
    GuiControl *mMenuBarCtrl;
 
@@ -200,6 +208,8 @@ public:
 
    static void initPersistFields();
 
+   static CanvasSizeChangeSignal& getCanvasSizeChangeSignal() { return smCanvasSizeChangeSignal; }
+
    /// @name Rendering methods
    ///
    /// @{

Engine/source/renderInstance/renderPassManager.cpp

@@ -53,6 +53,7 @@ const RenderInstType RenderPassManager::RIT_ObjectTranslucent("ObjectTranslucent
 const RenderInstType RenderPassManager::RIT_Decal("Decal");
 const RenderInstType RenderPassManager::RIT_Water("Water");
 const RenderInstType RenderPassManager::RIT_Foliage("Foliage");
+const RenderInstType RenderPassManager::RIT_VolumetricFog("ObjectVolumetricFog");
 const RenderInstType RenderPassManager::RIT_Translucent("Translucent");
 const RenderInstType RenderPassManager::RIT_Begin("Begin");
 const RenderInstType RenderPassManager::RIT_Custom("Custom");

Engine/source/renderInstance/renderPassManager.h

@@ -110,6 +110,7 @@ public:
    static const RenderInstType RIT_Decal;
    static const RenderInstType RIT_Water;
    static const RenderInstType RIT_Foliage;
+   static const RenderInstType RIT_VolumetricFog;
    static const RenderInstType RIT_Translucent;
    static const RenderInstType RIT_Begin;
    static const RenderInstType RIT_Custom;

Engine/source/renderInstance/renderTranslucentMgr.cpp

@@ -51,6 +51,7 @@ RenderTranslucentMgr::RenderTranslucentMgr()
 {
    notifyType( RenderPassManager::RIT_ObjectTranslucent );
    notifyType( RenderPassManager::RIT_Particle );
+   notifyType( RenderPassManager::RIT_VolumetricFog);
 }
 
 RenderTranslucentMgr::~RenderTranslucentMgr()
@@ -187,6 +188,15 @@ void RenderTranslucentMgr::render( SceneRenderState *state )
          j++;
          continue;
       }
+      else if (baseRI->type == RenderPassManager::RIT_VolumetricFog)
+	   {
+	      ObjectRenderInst* objRI = static_cast<ObjectRenderInst*>(baseRI);
+	      objRI->renderDelegate(objRI, state, NULL);
+	      lastVB = NULL;
+	      lastPB = NULL;
+	      j++;
+	      continue;
+	   }
       else if ( baseRI->type == RenderPassManager::RIT_Particle )
       {
          ParticleRenderInst *ri = static_cast<ParticleRenderInst*>(baseRI);

Engine/source/windowManager/platformWindow.cpp

@@ -22,7 +22,7 @@
 
 #include "windowManager/platformWindow.h"
 
-
+ScreenResChangeSignal PlatformWindow::smScreenResChangeSignal;
 //-----------------------------------------------------------------------------
 
 void PlatformWindow::setFullscreen( const bool fullscreen )
@@ -48,3 +48,8 @@ bool PlatformWindow::shouldNotTranslate( U32 modifiers, U32 keyCode ) const
    else
       return false;
 }
+void PlatformWindow::setVideoMode(const GFXVideoMode &mode)
+{
+   _setVideoMode(mode);
+	getScreenResChangeSignal().trigger(this, true);
+}

Engine/source/windowManager/platformWindow.h

@@ -28,6 +28,9 @@
 #include "core/util/safeDelete.h"
 #include "windowManager/platformCursorController.h"
 #include "windowManager/windowInputGenerator.h"
+#ifndef _SIGNAL_H_ //Volumetric Fog
+#include "core/util/tSignal.h"
+#endif
 
 //forward decl's
 class PlatformWindowManager;
@@ -35,7 +38,7 @@ class GFXDevice;
 struct GFXVideoMode;
 class GFXWindowTarget;
 class IProcessInput;
-
+typedef Signal<void(PlatformWindow *PlatformWindow, bool resize)> ScreenResChangeSignal;
 /// Abstract representation of a native OS window.
 ///
 /// Every windowing system has its own representations and conventions as
@@ -110,7 +113,7 @@ protected:
       // This controller maps window input (Mouse/Keyboard) to a generic input consumer
       mWindowInputGenerator = new WindowInputGenerator( this );
    }
-
+   static ScreenResChangeSignal smScreenResChangeSignal;
 public:
 
    /// To get rid of a window, just delete it. Make sure the GFXDevice is
@@ -158,7 +161,7 @@ public:
    virtual GFXWindowTarget *getGFXTarget()=0;
 
    /// Set the video mode for this window.
-   virtual void setVideoMode(const GFXVideoMode &mode)=0;
+   virtual void setVideoMode(const GFXVideoMode &mode);
 
    /// Get our current video mode - if the window has been resized, it will
    /// reflect this.
@@ -497,6 +500,7 @@ public:
    IdleEvent         idleEvent;
 
    /// @}
+   static ScreenResChangeSignal& getScreenResChangeSignal() { return smScreenResChangeSignal; }
    
    /// Get the platform specific object needed to create or attach an accelerated
    /// graohics drawing context on or to the window
@@ -507,6 +511,7 @@ public:
    virtual void* getPlatformDrawable() const = 0;
 protected:
    virtual void _setFullscreen(const bool fullScreen) {};
+   virtual void _setVideoMode(const GFXVideoMode &mode) {};
 };
 
 #endif

Engine/source/windowManager/win32/win32Window.cpp

@@ -287,6 +287,8 @@ void Win32Window::setVideoMode( const GFXVideoMode &mode )
 		mOwningManager->raiseCurtain();
 
 	SetForegroundWindow(getHWND());
+
+   getScreenResChangeSignal().trigger(this, true);
 }
 
 bool Win32Window::clearFullscreen()