From 283c6c22727cf7c3b67cf3c133bafae2fcba59e1 Mon Sep 17 00:00:00 2001
From: MaxED <j.maxed@gmail.com>
Date: Fri, 2 Oct 2015 14:47:34 +0000
Subject: [PATCH] Visual mode: noticeable performance boost (rendering now
 works ~40% faster). Visual mode: fog distance calculation is now much closer
 to GZDoom one. Visual mode: thing brightness calculation when a thing is
 affected by floor glow is now much closer to GZDoom one. Linedef edit window,
 UDMF: added "Reset front/back brightness" buttons. Sector edit window, UDMF:
 added "Reset ceiling/floor brightness" buttons. Internal, Visual mode, Things
 mode: persistent event lines are now updated only when map objects are
 changed instead of doing it on every display redraw. Internal: improved
 Dictionary lookup times when using map objects and textures as keys.
 Internal: added "Release + Profiler" solution configuration. Updated
 ZDoom_ACS.cfg (Warp).

---
 Build/Scripting/ZDoom_ACS.cfg                 |   2 +-
 Builder.sln                                   |  23 +
 Source/Core/Builder.csproj                    |  15 +-
 Source/Core/Data/ImageData.cs                 |  15 +
 Source/Core/GZBuilder/Data/GlowingFlatData.cs |   1 +
 Source/Core/GZBuilder/Data/LinksCollector.cs  |   8 +-
 Source/Core/GZBuilder/Data/ModelData.cs       |  11 +
 .../Rendering/SizelessVisualThingCage.cs      |   4 +-
 .../GZBuilder/Rendering/ThingBoundingBox.cs   |   4 +-
 Source/Core/Geometry/Vector3D.cs              |  23 +
 Source/Core/Map/MapElement.cs                 |  11 +
 Source/Core/Rendering/D3DShader.cs            |   9 +-
 Source/Core/Rendering/Display2DShader.cs      |   2 +-
 Source/Core/Rendering/IRenderer3D.cs          |   5 +-
 Source/Core/Rendering/Renderer2D.cs           |   4 +-
 Source/Core/Rendering/Renderer3D.cs           | 419 ++++++++----------
 Source/Core/Rendering/Things2DShader.cs       |   7 +-
 Source/Core/Rendering/World3DShader.cs        | 106 ++++-
 Source/Core/Resources/world3d.fx              |  13 +-
 Source/Core/VisualModes/VisualGeometry.cs     |  40 ++
 Source/Core/VisualModes/VisualMode.cs         |  34 +-
 Source/Core/VisualModes/VisualSector.cs       |   6 -
 Source/Core/VisualModes/VisualThing.cs        | 104 ++++-
 Source/Core/VisualModes/VisualVertex.cs       |   6 -
 .../Windows/LinedefEditFormUDMF.Designer.cs   |  48 +-
 Source/Core/Windows/LinedefEditFormUDMF.cs    |  58 ++-
 .../Windows/SectorEditFormUDMF.Designer.cs    |  56 ++-
 Source/Core/Windows/SectorEditFormUDMF.cs     |  54 +++
 .../BuilderEffects/BuilderEffects.csproj      |   8 +
 .../Plugins/BuilderModes/BuilderModes.csproj  |   9 +
 .../BuilderModes/ClassicModes/ThingsMode.cs   |  50 ++-
 .../VisualModes/BaseVisualMode.cs             |  41 +-
 .../VisualModes/BaseVisualSector.cs           |  48 +-
 .../VisualModes/BaseVisualThing.cs            |  86 +++-
 .../BuilderModes/VisualModes/VisualCeiling.cs |   6 +
 .../BuilderModes/VisualModes/VisualFloor.cs   |  14 +-
 .../BuilderModes/VisualModes/VisualLower.cs   |   4 +-
 .../VisualModes/VisualMiddle3D.cs             |   2 +
 .../VisualModes/VisualMiddleBack.cs           |  17 +-
 .../VisualModes/VisualMiddleDouble.cs         |   4 +-
 .../VisualModes/VisualMiddleSingle.cs         |   4 +-
 .../BuilderModes/VisualModes/VisualUpper.cs   |   4 +-
 Source/Plugins/ColorPicker/ColorPicker.csproj |   8 +
 .../CommentsPanel/CommentsPanel.csproj        |   8 +
 Source/Plugins/NodesViewer/NodesViewer.csproj |  10 +
 .../SoundPropagation.csproj                   |   8 +
 .../StairSectorBuilder.csproj                 |   8 +
 Source/Plugins/TagExplorer/TagExplorer.csproj |   8 +
 Source/Plugins/TagRange/TagRange.csproj       |   7 +
 .../VisplaneExplorer/VisplaneExplorer.csproj  |  10 +
 50 files changed, 1011 insertions(+), 441 deletions(-)

diff --git a/Build/Scripting/ZDoom_ACS.cfg b/Build/Scripting/ZDoom_ACS.cfg
index 141bfc09..9296bc29 100644
--- a/Build/Scripting/ZDoom_ACS.cfg
+++ b/Build/Scripting/ZDoom_ACS.cfg
@@ -487,7 +487,7 @@ keywords
 	VectorAngle = "fixed VectorAngle(int x, int y)";
 	VectorLength = "int VectorLength(int x, int y)";
 	Void = "void";
-	Warp = "bool Warp(int destinationtid, fixed x, fixed y, fixed z, int angle, int flags[, str state[, bool exactstate]])";
+	Warp = "bool Warp(int destinationtid, fixed xofs, fixed yofs, fixed zofs, int angle, int flags[, str success_state[, bool exactstate[, fixed heightoffset]]])";
 	While = "while(expression)";
 	WhiteReturn = "Script expression WhiteReturn";
 	World = "World Int expression:identifier";
diff --git a/Builder.sln b/Builder.sln
index 50d7921a..92c4b1f3 100644
--- a/Builder.sln
+++ b/Builder.sln
@@ -27,6 +27,7 @@ Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug + Profiler|x86 = Debug + Profiler|x86
 		Debug|x86 = Debug|x86
+		Release + Profiler|x86 = Release + Profiler|x86
 		Release|x86 = Release|x86
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
@@ -34,66 +35,88 @@ Global
 		{818B3D10-F791-4C3F-9AF5-BB2D0079B63C}.Debug + Profiler|x86.Build.0 = Debug + Profiler|x86
 		{818B3D10-F791-4C3F-9AF5-BB2D0079B63C}.Debug|x86.ActiveCfg = Debug|x86
 		{818B3D10-F791-4C3F-9AF5-BB2D0079B63C}.Debug|x86.Build.0 = Debug|x86
+		{818B3D10-F791-4C3F-9AF5-BB2D0079B63C}.Release + Profiler|x86.ActiveCfg = Release + Profiler|x86
+		{818B3D10-F791-4C3F-9AF5-BB2D0079B63C}.Release + Profiler|x86.Build.0 = Release + Profiler|x86
 		{818B3D10-F791-4C3F-9AF5-BB2D0079B63C}.Release|x86.ActiveCfg = Release|x86
 		{818B3D10-F791-4C3F-9AF5-BB2D0079B63C}.Release|x86.Build.0 = Release|x86
 		{B42D5AA0-F9A6-4234-9C4B-A05B11A64851}.Debug + Profiler|x86.ActiveCfg = Debug + Profiler|x86
 		{B42D5AA0-F9A6-4234-9C4B-A05B11A64851}.Debug + Profiler|x86.Build.0 = Debug + Profiler|x86
 		{B42D5AA0-F9A6-4234-9C4B-A05B11A64851}.Debug|x86.ActiveCfg = Debug|x86
 		{B42D5AA0-F9A6-4234-9C4B-A05B11A64851}.Debug|x86.Build.0 = Debug|x86
+		{B42D5AA0-F9A6-4234-9C4B-A05B11A64851}.Release + Profiler|x86.ActiveCfg = Release + Profiler|x86
+		{B42D5AA0-F9A6-4234-9C4B-A05B11A64851}.Release + Profiler|x86.Build.0 = Release + Profiler|x86
 		{B42D5AA0-F9A6-4234-9C4B-A05B11A64851}.Release|x86.ActiveCfg = Release|x86
 		{B42D5AA0-F9A6-4234-9C4B-A05B11A64851}.Release|x86.Build.0 = Release|x86
 		{B859BE0F-A992-476D-A642-FA8EFE94AAA5}.Debug + Profiler|x86.ActiveCfg = Debug + Profiler|x86
 		{B859BE0F-A992-476D-A642-FA8EFE94AAA5}.Debug + Profiler|x86.Build.0 = Debug + Profiler|x86
 		{B859BE0F-A992-476D-A642-FA8EFE94AAA5}.Debug|x86.ActiveCfg = Debug|x86
 		{B859BE0F-A992-476D-A642-FA8EFE94AAA5}.Debug|x86.Build.0 = Debug|x86
+		{B859BE0F-A992-476D-A642-FA8EFE94AAA5}.Release + Profiler|x86.ActiveCfg = Release + Profiler|x86
+		{B859BE0F-A992-476D-A642-FA8EFE94AAA5}.Release + Profiler|x86.Build.0 = Release + Profiler|x86
 		{B859BE0F-A992-476D-A642-FA8EFE94AAA5}.Release|x86.ActiveCfg = Release|x86
 		{B859BE0F-A992-476D-A642-FA8EFE94AAA5}.Release|x86.Build.0 = Release|x86
 		{A4761900-0EA3-4FE4-A919-847FD5080EFC}.Debug + Profiler|x86.ActiveCfg = Debug + Profiler|x86
 		{A4761900-0EA3-4FE4-A919-847FD5080EFC}.Debug + Profiler|x86.Build.0 = Debug + Profiler|x86
 		{A4761900-0EA3-4FE4-A919-847FD5080EFC}.Debug|x86.ActiveCfg = Debug|x86
 		{A4761900-0EA3-4FE4-A919-847FD5080EFC}.Debug|x86.Build.0 = Debug|x86
+		{A4761900-0EA3-4FE4-A919-847FD5080EFC}.Release + Profiler|x86.ActiveCfg = Release + Profiler|x86
+		{A4761900-0EA3-4FE4-A919-847FD5080EFC}.Release + Profiler|x86.Build.0 = Release + Profiler|x86
 		{A4761900-0EA3-4FE4-A919-847FD5080EFC}.Release|x86.ActiveCfg = Release|x86
 		{A4761900-0EA3-4FE4-A919-847FD5080EFC}.Release|x86.Build.0 = Release|x86
 		{BE7917F3-E6FE-4D5B-8FA9-B8E7668AC731}.Debug + Profiler|x86.ActiveCfg = Debug + Profiler|x86
 		{BE7917F3-E6FE-4D5B-8FA9-B8E7668AC731}.Debug + Profiler|x86.Build.0 = Debug + Profiler|x86
 		{BE7917F3-E6FE-4D5B-8FA9-B8E7668AC731}.Debug|x86.ActiveCfg = Debug|x86
 		{BE7917F3-E6FE-4D5B-8FA9-B8E7668AC731}.Debug|x86.Build.0 = Debug|x86
+		{BE7917F3-E6FE-4D5B-8FA9-B8E7668AC731}.Release + Profiler|x86.ActiveCfg = Release + Profiler|x86
+		{BE7917F3-E6FE-4D5B-8FA9-B8E7668AC731}.Release + Profiler|x86.Build.0 = Release + Profiler|x86
 		{BE7917F3-E6FE-4D5B-8FA9-B8E7668AC731}.Release|x86.ActiveCfg = Release|x86
 		{BE7917F3-E6FE-4D5B-8FA9-B8E7668AC731}.Release|x86.Build.0 = Release|x86
 		{58BD8A5B-1B48-435D-8473-A92F27D06C49}.Debug + Profiler|x86.ActiveCfg = Debug + Profiler|x86
 		{58BD8A5B-1B48-435D-8473-A92F27D06C49}.Debug + Profiler|x86.Build.0 = Debug + Profiler|x86
 		{58BD8A5B-1B48-435D-8473-A92F27D06C49}.Debug|x86.ActiveCfg = Debug|x86
 		{58BD8A5B-1B48-435D-8473-A92F27D06C49}.Debug|x86.Build.0 = Debug|x86
+		{58BD8A5B-1B48-435D-8473-A92F27D06C49}.Release + Profiler|x86.ActiveCfg = Release + Profiler|x86
+		{58BD8A5B-1B48-435D-8473-A92F27D06C49}.Release + Profiler|x86.Build.0 = Release + Profiler|x86
 		{58BD8A5B-1B48-435D-8473-A92F27D06C49}.Release|x86.ActiveCfg = Release|x86
 		{58BD8A5B-1B48-435D-8473-A92F27D06C49}.Release|x86.Build.0 = Release|x86
 		{9F244231-6A0C-42A6-87C5-ED9620DEE096}.Debug + Profiler|x86.ActiveCfg = Debug + Profiler|x86
 		{9F244231-6A0C-42A6-87C5-ED9620DEE096}.Debug + Profiler|x86.Build.0 = Debug + Profiler|x86
 		{9F244231-6A0C-42A6-87C5-ED9620DEE096}.Debug|x86.ActiveCfg = Debug|x86
 		{9F244231-6A0C-42A6-87C5-ED9620DEE096}.Debug|x86.Build.0 = Debug|x86
+		{9F244231-6A0C-42A6-87C5-ED9620DEE096}.Release + Profiler|x86.ActiveCfg = Release + Profiler|x86
+		{9F244231-6A0C-42A6-87C5-ED9620DEE096}.Release + Profiler|x86.Build.0 = Release + Profiler|x86
 		{9F244231-6A0C-42A6-87C5-ED9620DEE096}.Release|x86.ActiveCfg = Release|x86
 		{9F244231-6A0C-42A6-87C5-ED9620DEE096}.Release|x86.Build.0 = Release|x86
 		{F49EFF6D-51CB-4E49-8223-AAE653C5B62F}.Debug + Profiler|x86.ActiveCfg = Debug + Profiler|x86
 		{F49EFF6D-51CB-4E49-8223-AAE653C5B62F}.Debug + Profiler|x86.Build.0 = Debug + Profiler|x86
 		{F49EFF6D-51CB-4E49-8223-AAE653C5B62F}.Debug|x86.ActiveCfg = Debug|x86
 		{F49EFF6D-51CB-4E49-8223-AAE653C5B62F}.Debug|x86.Build.0 = Debug|x86
+		{F49EFF6D-51CB-4E49-8223-AAE653C5B62F}.Release + Profiler|x86.ActiveCfg = Release + Profiler|x86
+		{F49EFF6D-51CB-4E49-8223-AAE653C5B62F}.Release + Profiler|x86.Build.0 = Release + Profiler|x86
 		{F49EFF6D-51CB-4E49-8223-AAE653C5B62F}.Release|x86.ActiveCfg = Release|x86
 		{F49EFF6D-51CB-4E49-8223-AAE653C5B62F}.Release|x86.Build.0 = Release|x86
 		{CF670175-7099-4090-A330-EE25C7230139}.Debug + Profiler|x86.ActiveCfg = Debug + Profiler|x86
 		{CF670175-7099-4090-A330-EE25C7230139}.Debug + Profiler|x86.Build.0 = Debug + Profiler|x86
 		{CF670175-7099-4090-A330-EE25C7230139}.Debug|x86.ActiveCfg = Debug|x86
 		{CF670175-7099-4090-A330-EE25C7230139}.Debug|x86.Build.0 = Debug|x86
+		{CF670175-7099-4090-A330-EE25C7230139}.Release + Profiler|x86.ActiveCfg = Release + Profiler|x86
+		{CF670175-7099-4090-A330-EE25C7230139}.Release + Profiler|x86.Build.0 = Release + Profiler|x86
 		{CF670175-7099-4090-A330-EE25C7230139}.Release|x86.ActiveCfg = Release|x86
 		{CF670175-7099-4090-A330-EE25C7230139}.Release|x86.Build.0 = Release|x86
 		{F59B344C-DD50-4DB7-ADDD-56AAD66450AF}.Debug + Profiler|x86.ActiveCfg = Debug + Profiler|x86
 		{F59B344C-DD50-4DB7-ADDD-56AAD66450AF}.Debug + Profiler|x86.Build.0 = Debug + Profiler|x86
 		{F59B344C-DD50-4DB7-ADDD-56AAD66450AF}.Debug|x86.ActiveCfg = Debug|x86
 		{F59B344C-DD50-4DB7-ADDD-56AAD66450AF}.Debug|x86.Build.0 = Debug|x86
+		{F59B344C-DD50-4DB7-ADDD-56AAD66450AF}.Release + Profiler|x86.ActiveCfg = Release + Profiler|x86
+		{F59B344C-DD50-4DB7-ADDD-56AAD66450AF}.Release + Profiler|x86.Build.0 = Release + Profiler|x86
 		{F59B344C-DD50-4DB7-ADDD-56AAD66450AF}.Release|x86.ActiveCfg = Release|x86
 		{F59B344C-DD50-4DB7-ADDD-56AAD66450AF}.Release|x86.Build.0 = Release|x86
 		{3F365121-906B-409D-BB1E-37E0A78056C2}.Debug + Profiler|x86.ActiveCfg = Debug + Profiler|x86
 		{3F365121-906B-409D-BB1E-37E0A78056C2}.Debug + Profiler|x86.Build.0 = Debug + Profiler|x86
 		{3F365121-906B-409D-BB1E-37E0A78056C2}.Debug|x86.ActiveCfg = Debug|x86
 		{3F365121-906B-409D-BB1E-37E0A78056C2}.Debug|x86.Build.0 = Debug|x86
+		{3F365121-906B-409D-BB1E-37E0A78056C2}.Release + Profiler|x86.ActiveCfg = Release + Profiler|x86
+		{3F365121-906B-409D-BB1E-37E0A78056C2}.Release + Profiler|x86.Build.0 = Release + Profiler|x86
 		{3F365121-906B-409D-BB1E-37E0A78056C2}.Release|x86.ActiveCfg = Release|x86
 		{3F365121-906B-409D-BB1E-37E0A78056C2}.Release|x86.Build.0 = Release|x86
 	EndGlobalSection
diff --git a/Source/Core/Builder.csproj b/Source/Core/Builder.csproj
index f6d9bd81..c1d6abc6 100644
--- a/Source/Core/Builder.csproj
+++ b/Source/Core/Builder.csproj
@@ -61,6 +61,19 @@
     <UseVSHostingProcess>false</UseVSHostingProcess>
     <ErrorReport>prompt</ErrorReport>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release + Profiler|x86' ">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>..\..\Build\</OutputPath>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <DocumentationFile>..\..\Build\Builder.xml</DocumentationFile>
+    <Optimize>true</Optimize>
+    <WarningLevel>3</WarningLevel>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <DefineConstants>TRACE</DefineConstants>
+  </PropertyGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
@@ -519,7 +532,7 @@
     <Compile Include="Rendering\WorldVertex.cs" />
   </ItemGroup>
   <ItemGroup>
-    <Reference Include="JetBrains.Profiler.Core.Api, Version=1.3.1661.20096, Culture=neutral, PublicKeyToken=1010a0d8d6380325" Condition=" '$(Configuration)|$(Platform)' == 'Debug + Profiler|x86' " />
+    <Reference Include="JetBrains.Profiler.Core.Api, Version=1.3.1661.20096, Culture=neutral, PublicKeyToken=1010a0d8d6380325" Condition=" '$(Configuration)|$(Platform)' == 'Debug + Profiler|x86' Or '$(Configuration)|$(Platform)' == 'Release + Profiler|x86' " />
     <Reference Include="SharpCompress.3.5, Version=0.11.1.0, Culture=neutral, processorArchitecture=x86" />
     <Reference Include="SlimDX, Version=2.0.13.43, Culture=neutral, PublicKeyToken=b1b0c32fd1ffe4f9, processorArchitecture=x86" />
     <Reference Include="System" />
diff --git a/Source/Core/Data/ImageData.cs b/Source/Core/Data/ImageData.cs
index 4f851788..a43eeb1c 100644
--- a/Source/Core/Data/ImageData.cs
+++ b/Source/Core/Data/ImageData.cs
@@ -58,6 +58,10 @@ namespace CodeImp.DoomBuilder.Data
 		protected bool hasLongName; //mxd. Texture name is longer than DataManager.CLASIC_IMAGE_NAME_LENGTH
 		protected bool hasPatchWithSameName; //mxd
 		protected int level; //mxd. Folder depth of this item
+
+		//mxd. Hashing
+		private static int hashcounter;
+		private readonly int hashcode;
 		
 		// Loading
 		private volatile ImageLoadState previewstate;
@@ -126,6 +130,9 @@ namespace CodeImp.DoomBuilder.Data
 			// Defaults
 			usecolorcorrection = true;
 			allowunload = true;
+
+			//mxd. Hashing
+			hashcode = hashcounter++;
 		}
 
 		// Destructor
@@ -379,6 +386,8 @@ namespace CodeImp.DoomBuilder.Data
 								
 								General.Map.Data.GlowingFlats[longname].Color = new PixelColor(255, (byte)br, (byte)bg, (byte)bb);
 								General.Map.Data.GlowingFlats[longname].CalculateTextureColor = false;
+								if(!General.Map.Data.GlowingFlats[longname].Fullbright)
+									General.Map.Data.GlowingFlats[longname].Brightness = (br + bg + bb) / 3;
 							}
 
 							// Release the data
@@ -557,6 +566,12 @@ namespace CodeImp.DoomBuilder.Data
 				return Properties.Resources.Hourglass;
 			}
 		}
+
+		//mxd. This greatly speeds up Dictionary lookups
+		public override int GetHashCode()
+		{
+			return hashcode;
+		}
 		
 		#endregion
 	}
diff --git a/Source/Core/GZBuilder/Data/GlowingFlatData.cs b/Source/Core/GZBuilder/Data/GlowingFlatData.cs
index 566fad97..de25eb81 100644
--- a/Source/Core/GZBuilder/Data/GlowingFlatData.cs
+++ b/Source/Core/GZBuilder/Data/GlowingFlatData.cs
@@ -6,6 +6,7 @@ namespace CodeImp.DoomBuilder.GZBuilder.Data
 	{
 		public PixelColor Color;
 		public int Height;
+		public int Brightness = 255;
 		public bool Fullbright;
 		public bool Fullblack; // GLOOME only
 		public bool Subtractive; // GLOOME only
diff --git a/Source/Core/GZBuilder/Data/LinksCollector.cs b/Source/Core/GZBuilder/Data/LinksCollector.cs
index c49cf9dc..90b51fec 100644
--- a/Source/Core/GZBuilder/Data/LinksCollector.cs
+++ b/Source/Core/GZBuilder/Data/LinksCollector.cs
@@ -72,16 +72,16 @@ namespace CodeImp.DoomBuilder.GZBuilder.Data
 			}
 		}
 		
-		public static List<Line3D> GetThingLinks(IEnumerable<VisualThing> visualthings) 
+		/*public static List<Line3D> GetThingLinks(IEnumerable<VisualThing> visualthings) 
 		{
 			List<Thing> things = new List<Thing>();
 			foreach (VisualThing vt in visualthings) things.Add(vt.Thing);
 			return GetThingLinks(GetSpecialThings(things, true), true);
-		}
+		}*/
 
-		public static List<Line3D> GetThingLinks(IEnumerable<Thing> things) 
+		public static List<Line3D> GetThingLinks(IEnumerable<Thing> things, bool correctheight) 
 		{
-			return GetThingLinks(GetSpecialThings(things, false), false);
+			return GetThingLinks(GetSpecialThings(things, correctheight), correctheight);
 		}
 
 		private static SpecialThings GetSpecialThings(IEnumerable<Thing> things, bool correctheight) 
diff --git a/Source/Core/GZBuilder/Data/ModelData.cs b/Source/Core/GZBuilder/Data/ModelData.cs
index 729609d0..2ea0ffd7 100644
--- a/Source/Core/GZBuilder/Data/ModelData.cs
+++ b/Source/Core/GZBuilder/Data/ModelData.cs
@@ -36,6 +36,10 @@ namespace CodeImp.DoomBuilder.GZBuilder.Data
 
 		internal bool IsVoxel;
 
+		// Hashing
+		private static int hashcounter;
+		private readonly int hashcode;
+
 		// Disposing
 		private bool isdisposed;
 
@@ -51,6 +55,7 @@ namespace CodeImp.DoomBuilder.GZBuilder.Data
 			TextureNames = new List<string>();
 			transform = Matrix.Identity;
 			transformstretched = Matrix.Identity;
+			hashcode = hashcounter++;
 		}
 
 		internal void Dispose() 
@@ -78,6 +83,12 @@ namespace CodeImp.DoomBuilder.GZBuilder.Data
 			this.transformstretched = rotation * Matrix.Scaling(scale.X, scale.Y, scale.Z * Renderer3D.GZDOOM_INVERTED_VERTICAL_VIEW_STRETCH) * offset;
 		}
 
+		//mxd. This greatly speeds up Dictionary lookups
+		public override int GetHashCode()
+		{
+			return hashcode;
+		}
+
 		#endregion
 	}
 }
diff --git a/Source/Core/GZBuilder/Rendering/SizelessVisualThingCage.cs b/Source/Core/GZBuilder/Rendering/SizelessVisualThingCage.cs
index bee9947b..f982dcbe 100644
--- a/Source/Core/GZBuilder/Rendering/SizelessVisualThingCage.cs
+++ b/Source/Core/GZBuilder/Rendering/SizelessVisualThingCage.cs
@@ -1,4 +1,4 @@
-#region ================== Namespaces
+/*#region ================== Namespaces
 
 using System;
 using SlimDX.Direct3D9;
@@ -90,4 +90,4 @@ namespace CodeImp.DoomBuilder.GZBuilder.Rendering
 
 		#endregion
 	}
-}
+}*/
diff --git a/Source/Core/GZBuilder/Rendering/ThingBoundingBox.cs b/Source/Core/GZBuilder/Rendering/ThingBoundingBox.cs
index 9dd86504..9a546859 100644
--- a/Source/Core/GZBuilder/Rendering/ThingBoundingBox.cs
+++ b/Source/Core/GZBuilder/Rendering/ThingBoundingBox.cs
@@ -1,4 +1,4 @@
-#region ================== Namespaces
+/*#region ================== Namespaces
 
 using System;
 using SlimDX.Direct3D9;
@@ -121,4 +121,4 @@ namespace CodeImp.DoomBuilder.GZBuilder.Rendering
 
 		#endregion
 	}
-}
+}*/
diff --git a/Source/Core/Geometry/Vector3D.cs b/Source/Core/Geometry/Vector3D.cs
index cdd2fa30..32d19339 100644
--- a/Source/Core/Geometry/Vector3D.cs
+++ b/Source/Core/Geometry/Vector3D.cs
@@ -17,6 +17,7 @@
 #region ================== Namespaces
 
 using System;
+using SlimDX;
 
 #endregion
 
@@ -233,6 +234,28 @@ namespace CodeImp.DoomBuilder.Geometry
 			// Return vector
 			return new Vector3D(ax, ay, az);
 		}
+
+		//mxd
+		public static Vector3D Transform(Vector3D v, Matrix m)
+		{
+			return new Vector3D
+			{
+				x = m.M11 * v.x + m.M21 * v.y + m.M31 * v.z + m.M41,
+				y = m.M12 * v.x + m.M22 * v.y + m.M32 * v.z + m.M42,
+				z = m.M13 * v.x + m.M23 * v.y + m.M33 * v.z + m.M43,
+			};
+		}
+
+		//mxd
+		public static Vector3D Transform(float x, float y, float z, Matrix m)
+		{
+			return new Vector3D
+			{
+				x = m.M11 * x + m.M21 * y + m.M31 * z + m.M41,
+				y = m.M12 * x + m.M22 * y + m.M32 * z + m.M42,
+				z = m.M13 * x + m.M23 * y + m.M33 * z + m.M43,
+			};
+		}
 		
 		#endregion
 		
diff --git a/Source/Core/Map/MapElement.cs b/Source/Core/Map/MapElement.cs
index 43fd3a59..0c6d4bf6 100644
--- a/Source/Core/Map/MapElement.cs
+++ b/Source/Core/Map/MapElement.cs
@@ -46,6 +46,10 @@ namespace CodeImp.DoomBuilder.Map
 		
 		// Error Ignoring (mxd)
 		private List<Type> ignorederrorchecks;
+
+		//mxd. Hashing
+		private static int hashcounter;
+		private readonly int hashcode;
 		
 		#endregion
 		
@@ -67,6 +71,7 @@ namespace CodeImp.DoomBuilder.Map
 			// Initialize
 			fields = new UniFields(this);
 			ignorederrorchecks = new List<Type>(); //mxd
+			hashcode = hashcounter++; //mxd
 		}
 
 		// Disposer
@@ -128,6 +133,12 @@ namespace CodeImp.DoomBuilder.Map
 		{
 			BeforePropsChange();
 		}
+
+		//mxd. This greatly speeds up Dictionary lookups
+		public override int GetHashCode()
+		{
+			return hashcode;
+		}
 		
 		#endregion
 	}
diff --git a/Source/Core/Rendering/D3DShader.cs b/Source/Core/Rendering/D3DShader.cs
index e0c35f62..b67b48f8 100644
--- a/Source/Core/Rendering/D3DShader.cs
+++ b/Source/Core/Rendering/D3DShader.cs
@@ -44,6 +44,9 @@ namespace CodeImp.DoomBuilder.Rendering
 		// Disposing
 		protected bool isdisposed;
 
+		//mxd. Settings changes
+		protected bool settingschanged;
+
 		#endregion
 
 		#region ================== Properties
@@ -166,7 +169,11 @@ namespace CodeImp.DoomBuilder.Rendering
 		// This applies properties during a pass
 		public void ApplySettings()
 		{
-			if(manager.Enabled) effect.CommitChanges();
+			if(manager.Enabled && settingschanged)
+			{
+				effect.CommitChanges();
+				settingschanged = false; //mxd
+			}
 		}
 		
 		#endregion
diff --git a/Source/Core/Rendering/Display2DShader.cs b/Source/Core/Rendering/Display2DShader.cs
index f9683d12..ca7a009b 100644
--- a/Source/Core/Rendering/Display2DShader.cs
+++ b/Source/Core/Rendering/Display2DShader.cs
@@ -103,7 +103,7 @@ namespace CodeImp.DoomBuilder.Rendering
 				effect.SetValue(rendersettings, values);
 				Matrix world = manager.D3DDevice.Device.GetTransform(TransformState.World);
 				Matrix view = manager.D3DDevice.Device.GetTransform(TransformState.View);
-				effect.SetValue(transformsettings, Matrix.Multiply(world, view));
+				effect.SetValue(transformsettings, world * view);
 				TextureFilter filter = (bilinear ? TextureFilter.Linear : TextureFilter.Point);
 				effect.SetValue(filtersettings, (int)filter);
 			}
diff --git a/Source/Core/Rendering/IRenderer3D.cs b/Source/Core/Rendering/IRenderer3D.cs
index e1d6ee09..3ac2b2c2 100644
--- a/Source/Core/Rendering/IRenderer3D.cs
+++ b/Source/Core/Rendering/IRenderer3D.cs
@@ -16,6 +16,8 @@
 
 #region ================== Namespaces
 
+using System.Collections.Generic;
+using CodeImp.DoomBuilder.GZBuilder.Geometry;
 using CodeImp.DoomBuilder.Map;
 using CodeImp.DoomBuilder.Geometry;
 using CodeImp.DoomBuilder.VisualModes;
@@ -48,7 +50,8 @@ namespace CodeImp.DoomBuilder.Rendering
 		void SetHighlightedObject(IVisualPickable obj);
 		void AddSectorGeometry(VisualGeometry g);
 		void AddThingGeometry(VisualThing t);
-		void AddVisualVertices(VisualVertex[] verts);
+		void SetVisualVertices(List<VisualVertex> verts);
+		void SetEventLines(List<Line3D> lines);
 		void RenderCrosshair();
 		void SetFogMode(bool usefog);
 		void SetCrosshairBusy(bool busy);
diff --git a/Source/Core/Rendering/Renderer2D.cs b/Source/Core/Rendering/Renderer2D.cs
index 05684e21..42512581 100644
--- a/Source/Core/Rendering/Renderer2D.cs
+++ b/Source/Core/Rendering/Renderer2D.cs
@@ -523,7 +523,7 @@ namespace CodeImp.DoomBuilder.Rendering
 
 			Matrix scaling = Matrix.Scaling((1f / windowsize.Width) * 2f, (1f / windowsize.Height) * -2f, 1f);
 			Matrix translate = Matrix.Translation(-(float)windowsize.Width * 0.5f, -(float)windowsize.Height * 0.5f, 0f);
-			graphics.Device.SetTransform(TransformState.View, Matrix.Multiply(translate, scaling));
+			graphics.Device.SetTransform(TransformState.View, translate * scaling);
 			graphics.Device.SetTransform(TransformState.Projection, Matrix.Identity);
 			Vector2D lt = DisplayToMap(new Vector2D(0.0f, 0.0f));
 			Vector2D rb = DisplayToMap(new Vector2D(windowsize.Width, windowsize.Height));
@@ -538,7 +538,7 @@ namespace CodeImp.DoomBuilder.Rendering
 			{
 				Matrix translate = Matrix.Translation(translatex, translatey, 0f);
 				Matrix scaling = Matrix.Scaling(scale, -scale, 1f);
-				graphics.Device.SetTransform(TransformState.World, Matrix.Multiply(translate, scaling));
+				graphics.Device.SetTransform(TransformState.World, translate * scaling);
 			}
 			else
 			{
diff --git a/Source/Core/Rendering/Renderer3D.cs b/Source/Core/Rendering/Renderer3D.cs
index bd247afc..99ef8dab 100644
--- a/Source/Core/Rendering/Renderer3D.cs
+++ b/Source/Core/Rendering/Renderer3D.cs
@@ -20,15 +20,15 @@ using System;
 using System.Collections.Generic;
 using System.Drawing;
 using CodeImp.DoomBuilder.Config;
-using SlimDX;
-using CodeImp.DoomBuilder.Geometry;
-using SlimDX.Direct3D9;
 using CodeImp.DoomBuilder.Data;
-using CodeImp.DoomBuilder.VisualModes;
-using CodeImp.DoomBuilder.Map;
+using CodeImp.DoomBuilder.Geometry;
 using CodeImp.DoomBuilder.GZBuilder.Data; //mxd
 using CodeImp.DoomBuilder.GZBuilder.Geometry; //mxd
 using CodeImp.DoomBuilder.GZBuilder.Rendering; //mxd
+using CodeImp.DoomBuilder.Map;
+using CodeImp.DoomBuilder.VisualModes;
+using SlimDX;
+using SlimDX.Direct3D9;
 
 #endregion
 
@@ -50,8 +50,8 @@ namespace CodeImp.DoomBuilder.Rendering
 		// Matrices
 		private Matrix projection;
 		private Matrix view3d;
+		private Matrix viewproj; //mxd
 		private Matrix billboard;
-		private Matrix worldviewproj;
 		private Matrix view2d;
 		private Matrix world;
 		private Vector3D cameraposition;
@@ -66,9 +66,7 @@ namespace CodeImp.DoomBuilder.Rendering
 		// Thing cage
 		private bool renderthingcages;
 		//mxd
-		private ThingBoundingBox bbox;
 		private VisualVertexHandle vertexHandle;
-		private SizelessVisualThingCage sizelessThingHandle;
 		private List<VisualThing> lightthings;
 		private int[] lightOffsets;
 		private Dictionary<ModelData, List<VisualThing>> modelthings;
@@ -108,7 +106,10 @@ namespace CodeImp.DoomBuilder.Rendering
 		private List<VisualThing> allthings;
 
 		//mxd. Visual vertices
-		private VisualVertex[] visualvertices;
+		private List<VisualVertex> visualvertices;
+
+		//mxd. Event lines
+		private List<Line3D> eventlines;
 		
 		#endregion
 
@@ -134,6 +135,7 @@ namespace CodeImp.DoomBuilder.Rendering
 			renderthingcages = true;
 			showselection = true;
 			showhighlight = true;
+			eventlines = new List<Line3D>(); //mxd
 			
 			// Dummy frustum
 			frustum = new ProjectedFrustum2D(new Vector2D(), 0.0f, 0.0f, PROJ_NEAR_PLANE,
@@ -234,8 +236,6 @@ namespace CodeImp.DoomBuilder.Rendering
 		//mxd
 		private void SetupHelperObjects() 
 		{
-			bbox = new ThingBoundingBox();
-			sizelessThingHandle = new SizelessVisualThingCage();
 			vertexHandle = new VisualVertexHandle();
 		}
 
@@ -289,6 +289,7 @@ namespace CodeImp.DoomBuilder.Rendering
 			
 			// Make the view matrix
 			view3d = Matrix.LookAtRH(D3DDevice.V3(pos), D3DDevice.V3(lookat), new Vector3(0f, 0f, 1f));
+			viewproj = view3d * projection; //mxd
 			
 			// Make the billboard matrix
 			billboard = Matrix.RotationZ(anglexy + Angle2D.PI);
@@ -300,17 +301,13 @@ namespace CodeImp.DoomBuilder.Rendering
 			windowsize = graphics.RenderTarget.ClientSize;
 			Matrix scaling = Matrix.Scaling((1f / windowsize.Width) * 2f, (1f / windowsize.Height) * -2f, 1f);
 			Matrix translate = Matrix.Translation(-(float)windowsize.Width * 0.5f, -(float)windowsize.Height * 0.5f, 0f);
-			view2d = Matrix.Multiply(translate, scaling);
+			view2d = translate * scaling;
 		}
 		
 		// This applies the matrices
 		private void ApplyMatrices3D()
 		{
-			worldviewproj = world * view3d * projection;
-			graphics.Shaders.World3D.WorldViewProj = worldviewproj;
-			graphics.Device.SetTransform(TransformState.World, world);
-			graphics.Device.SetTransform(TransformState.Projection, projection);
-			graphics.Device.SetTransform(TransformState.View, view3d);
+			graphics.Shaders.World3D.WorldViewProj = world * viewproj; //mxd. Multiplication is ~2x faster than "world * view3d * projection";
 		}
 
 		// This sets the appropriate view matrix
@@ -346,7 +343,7 @@ namespace CodeImp.DoomBuilder.Rendering
 				graphics.Device.SetRenderState(RenderState.FogTableMode, FogMode.Linear);
 				graphics.Device.SetRenderState(RenderState.RangeFogEnable, false);
 				graphics.Device.SetRenderState(RenderState.TextureFactor, -1);
-				graphics.Shaders.World3D.SetHighlightColor(0);
+				graphics.Shaders.World3D.HighlightColor = new Color4(); //mxd
 
 				// Texture addressing
 				graphics.Device.SetSamplerState(0, SamplerState.AddressU, TextureAddress.Wrap);
@@ -456,13 +453,15 @@ namespace CodeImp.DoomBuilder.Rendering
 			RenderTranslucentPass(translucentgeo, translucentthings);
 
 			// THING CAGES
+			world = Matrix.Identity;
+			ApplyMatrices3D();
 			if(renderthingcages) RenderThingCages();
 
 			//mxd. Visual vertices
 			RenderVertices();
 
 			//mxd. Event lines
-			if(General.Settings.GZShowEventLines) RenderArrows(LinksCollector.GetThingLinks(allthings));
+			if(General.Settings.GZShowEventLines) RenderArrows(eventlines);
 			
 			// Remove references
 			graphics.Shaders.World3D.Texture1 = null;
@@ -535,10 +534,6 @@ namespace CodeImp.DoomBuilder.Rendering
 
 			foreach(VisualThing t in allthings)
 			{
-				// Setup matrix
-				world = Matrix.Multiply(t.CageScales, t.Position);
-				ApplyMatrices3D();
-
 				// Setup color
 				Color4 thingcolor;
 				if(t.Selected && showselection) 
@@ -554,35 +549,8 @@ namespace CodeImp.DoomBuilder.Rendering
 
 				//Render cage
 				graphics.Shaders.World3D.ApplySettings();
-
-				if(t.Sizeless) 
-				{
-					graphics.Device.SetStreamSource(0, sizelessThingHandle.Shape, 0, WorldVertex.Stride);
-					graphics.Device.DrawPrimitives(PrimitiveType.LineList, 0, 3);
-				} 
-				else 
-				{
-					graphics.Device.SetStreamSource(0, bbox.Cage, 0, WorldVertex.Stride);
-					graphics.Device.DrawPrimitives(PrimitiveType.LineList, 0, 12);
-				}
-
-				//and arrow
-				if(t.Thing.IsDirectional) 
-				{
-					float sx = t.CageScales.M11;
-					Matrix arrowScaler = Matrix.Scaling(sx, sx, sx); //scale arrow evenly based on thing width\depth
-					if(t.Sizeless) 
-						world = Matrix.Multiply(arrowScaler, t.Position);
-					else 
-						world = Matrix.Multiply(arrowScaler, t.Position * Matrix.Translation(0.0f, 0.0f, t.CageScales.M33 / 2));
-					Matrix rot = Matrix.RotationY(-t.Thing.RollRad) * Matrix.RotationX(-t.Thing.PitchRad) * Matrix.RotationZ(t.Thing.Angle);
-					world = Matrix.Multiply(rot, world);
-					ApplyMatrices3D();
-
-					graphics.Shaders.World3D.ApplySettings();
-					graphics.Device.SetStreamSource(0, bbox.Arrow, 0, WorldVertex.Stride);
-					graphics.Device.DrawPrimitives(PrimitiveType.LineList, 0, 5);
-				}
+				graphics.Device.SetStreamSource(0, t.CageBuffer, 0, WorldVertex.Stride);
+				graphics.Device.DrawPrimitives(PrimitiveType.LineList, 0, t.CageLength);
 			}
 
 			// Done
@@ -723,8 +691,10 @@ namespace CodeImp.DoomBuilder.Rendering
 			//mxd. Anything to render?
 			if(geopass.Count == 0 && thingspass.Count == 0) return;
 			
+			ImageData curtexture;
 			int currentshaderpass = shaderpass;
 			int highshaderpass = shaderpass + 2;
+			float fogfactor = -1; //mxd
 
 			// Begin rendering with this shader
 			graphics.Shaders.World3D.BeginPass(shaderpass);
@@ -732,8 +702,6 @@ namespace CodeImp.DoomBuilder.Rendering
 			// Render the geometry collected
 			foreach(KeyValuePair<ImageData, List<VisualGeometry>> group in geopass)
 			{
-				ImageData curtexture;
-
 				// What texture to use?
 				if(group.Key is UnknownImage)
 					curtexture = General.Map.Data.UnknownTexture3D;
@@ -765,7 +733,7 @@ namespace CodeImp.DoomBuilder.Rendering
 						if(g.Sector.NeedsUpdateGeo) g.Sector.Update();
 
 						// Only do this sector when a vertexbuffer is created
-						//mxd. no Map means that sector was deleted recently, I suppose
+						//mxd. No Map means that sector was deleted recently, I suppose
 						if (g.Sector.GeometryBuffer != null && g.Sector.Sector.Map != null) 
 						{
 							// Change current sector
@@ -786,7 +754,7 @@ namespace CodeImp.DoomBuilder.Rendering
 						int wantedshaderpass = (((g == highlighted) && showhighlight) || (g.Selected && showselection)) ? highshaderpass : shaderpass;
 
 						//mxd. Render fog?
-						if( !(!General.Settings.GZDrawFog || fullbrightness || sector.Sector.Brightness > 247) )
+						if(General.Settings.GZDrawFog && !fullbrightness && sector.Sector.Brightness < 248)
 							wantedshaderpass += 8;
 
 						// Switch shader pass?
@@ -795,27 +763,31 @@ namespace CodeImp.DoomBuilder.Rendering
 							graphics.Shaders.World3D.EndPass();
 							graphics.Shaders.World3D.BeginPass(wantedshaderpass);
 							currentshaderpass = wantedshaderpass;
-						}
-						
-						// Set the colors to use
-						if(!graphics.Shaders.Enabled)
-						{
-							graphics.Device.SetTexture(2, (g.Selected && showselection) ? selectionimage.Texture : null);
-							graphics.Device.SetTexture(3, ((g == highlighted) && showhighlight) ? highlightimage.Texture : null);
-						}
-						else
-						{
-							//mxd. set variables for fog rendering
-							if (wantedshaderpass > 7) 
+
+							//mxd. Set variables for fog rendering?
+							if(wantedshaderpass > 7)
 							{
 								graphics.Shaders.World3D.World = world;
-								graphics.Shaders.World3D.LightColor = sector.Sector.FogColor;
-								graphics.Shaders.World3D.CameraPosition = new Vector4(cameraposition.x, cameraposition.y, cameraposition.z, sector.FogDistance);
+							}
+						}
+
+						//mxd. Set variables for fog rendering?
+						if(wantedshaderpass > 7)
+						{
+							if(g.FogFactor != fogfactor)
+							{
+								graphics.Shaders.World3D.CameraPosition = new Vector4(cameraposition.x, cameraposition.y, cameraposition.z, g.FogFactor);
+								fogfactor = g.FogFactor;
 							}
 							
-							graphics.Shaders.World3D.SetHighlightColor(CalculateHighlightColor((g == highlighted) && showhighlight, (g.Selected && showselection)).ToArgb());
-							graphics.Shaders.World3D.ApplySettings();
+							graphics.Shaders.World3D.LightColor = sector.Sector.FogColor;
 						}
+
+						// Set the colors to use
+						graphics.Shaders.World3D.HighlightColor = CalculateHighlightColor((g == highlighted) && showhighlight, (g.Selected && showselection));
+
+						// Apply changes
+						graphics.Shaders.World3D.ApplySettings();
 						
 						// Render!
 						graphics.Device.DrawPrimitives(PrimitiveType.TriangleList, g.VertexOffset, g.Triangles);
@@ -832,13 +804,15 @@ namespace CodeImp.DoomBuilder.Rendering
 				graphics.Device.SetSamplerState(0, SamplerState.AddressW, TextureAddress.Clamp);
 				graphics.Device.SetRenderState(RenderState.CullMode, Cull.None); //mxd. Disable backside culling, because otherwise sprites with positive ScaleY and negative ScaleX will be facing away from the camera...
 
+				Color4 litcolor; //mxd
+				Color4 vertexcolor = new Color4(); //mxd
+				fogfactor = -1; //mxd
+
 				// Render things collected
 				foreach(KeyValuePair<ImageData, List<VisualThing>> group in thingspass)
 				{
 					if(group.Key is UnknownImage) continue;
 					
-					ImageData curtexture;
-						
 					// What texture to use?
 					if(!group.Key.IsImageLoaded || group.Key.IsDisposed)
 						curtexture = General.Map.Data.Hourglass3D;
@@ -850,7 +824,6 @@ namespace CodeImp.DoomBuilder.Rendering
 						curtexture.CreateTexture();
 
 					// Apply texture
-					if(!graphics.Shaders.Enabled) graphics.Device.SetTexture(0, curtexture.Texture);
 					graphics.Shaders.World3D.Texture1 = curtexture.Texture;
 
 					// Render all things with this texture
@@ -872,28 +845,35 @@ namespace CodeImp.DoomBuilder.Rendering
 							// Determine the shader pass we want to use for this object
 							int wantedshaderpass = (((t == highlighted) && showhighlight) || (t.Selected && showselection)) ? highshaderpass : shaderpass;
 
-							//mxd. if fog is enagled, switch to shader, which calculates it
+							//mxd. If fog is enagled, switch to shader, which calculates it
 							if(General.Settings.GZDrawFog && !fullbrightness && t.Thing.Sector != null && (t.Thing.Sector.HasFogColor || t.Thing.Sector.Brightness < 248))
 								wantedshaderpass += 8;
 
-							//mxd. if current thing is light - set it's color to light color
-							Color4 litcolor = new Color4();
+							//mxd. Create the matrix for positioning 
+							world = CreateThingPositionMatrix(t);
+
+							//mxd. If current thing is light - set it's color to light color
 							if(Array.IndexOf(GZBuilder.GZGeneral.GZ_LIGHTS, t.Thing.Type) != -1 && !fullbrightness) 
 							{
-								wantedshaderpass += 4; //render using one of passes, which uses World3D.VertexColor
-								graphics.Shaders.World3D.VertexColor = t.LightColor;
+								wantedshaderpass += 4; // Render using one of passes, which uses World3D.VertexColor
 								litcolor = t.LightColor;
+								vertexcolor = t.LightColor;
 							}
-							//mxd. check if Thing is affected by dynamic lights and set color accordingly
-							else if(General.Settings.GZDrawLightsMode != LightRenderMode.NONE && !fullbrightness && lightthings.Count > 0) 
+							//mxd. Check if Thing is affected by dynamic lights and set color accordingly
+							else if(General.Settings.GZDrawLightsMode != LightRenderMode.NONE && !fullbrightness && lightthings.Count > 0)
 							{
 								litcolor = GetLitColorForThing(t);
-								if(litcolor.ToArgb() != 0) 
+								if(litcolor.ToArgb() != 0)
 								{
-									wantedshaderpass += 4; //render using one of passes, which uses World3D.VertexColor
-									graphics.Shaders.World3D.VertexColor = new Color4(t.VertexColor) + litcolor;
+									wantedshaderpass += 4; // Render using one of passes, which uses World3D.VertexColor
+									vertexcolor = new Color4(t.VertexColor) + litcolor;
 								}
 							}
+							else
+							{
+								litcolor = new Color4();
+								vertexcolor = new Color4();
+							}
 
 							// Switch shader pass?
 							if(currentshaderpass != wantedshaderpass) 
@@ -903,53 +883,26 @@ namespace CodeImp.DoomBuilder.Rendering
 								currentshaderpass = wantedshaderpass;
 							}
 
-							// Set the colors to use
-							if(!graphics.Shaders.Enabled) 
-							{
-								graphics.Device.SetTexture(2, (t.Selected && showselection) ? selectionimage.Texture : null);
-								graphics.Device.SetTexture(3, ((t == highlighted) && showhighlight) ? highlightimage.Texture : null);
-							} 
-							else 
-							{
-								graphics.Shaders.World3D.SetHighlightColor(CalculateHighlightColor((t == highlighted) && showhighlight, (t.Selected && showselection)).ToArgb());
-							}
-
-							//mxd. Create the matrix for positioning 
-							if(t.Info.RenderMode == Thing.SpriteRenderMode.NORMAL) // Apply billboarding?
-							{
-								if(t.Info.XYBillboard)
-								{
-									world = Matrix.Translation(0f, 0f, -t.LocalCenterZ) 
-										* Matrix.RotationX(Angle2D.PI - General.Map.VisualCamera.AngleZ)
-										* Matrix.Translation(0f, 0f, t.LocalCenterZ)
-									    * billboard
-									    * Matrix.Scaling(t.Thing.ScaleX, t.Thing.ScaleX, t.Thing.ScaleY)
-									    * t.Position;
-								}
-								else
-								{
-									world = billboard
-									        * Matrix.Scaling(t.Thing.ScaleX, t.Thing.ScaleX, t.Thing.ScaleY)
-									        * t.Position;
-								}
-							}
-							else
-							{
-								world = Matrix.Scaling(t.Thing.ScaleX, t.Thing.ScaleX, t.Thing.ScaleY)
-								        * t.Position;
-							}
-
-							ApplyMatrices3D();
-
-							//mxd. Set variables for fog rendering
-							if(wantedshaderpass > 7) 
+							//mxd. Set variables for fog rendering?
+							if(wantedshaderpass > 7)
 							{
 								graphics.Shaders.World3D.World = world;
-								graphics.Shaders.World3D.LightColor = t.Thing.Sector.FogColor;
-								float fogdistance = (litcolor.ToArgb() != 0 ? VisualSector.MAXIMUM_FOG_DISTANCE : t.FogDistance);
-								graphics.Shaders.World3D.CameraPosition = new Vector4(cameraposition.x, cameraposition.y, cameraposition.z, fogdistance);
+
+								float curfogfactor = (litcolor.ToArgb() != 0 ? VisualThing.LIT_FOG_DENSITY_SCALER : t.FogFactor);
+								if(curfogfactor != fogfactor)
+								{
+									graphics.Shaders.World3D.CameraPosition = new Vector4(cameraposition.x, cameraposition.y, cameraposition.z, curfogfactor);
+									fogfactor = curfogfactor;
+								}
 							}
 
+							// Set the colors to use
+							if(t.Thing.Sector != null) graphics.Shaders.World3D.LightColor = t.Thing.Sector.FogColor;
+							graphics.Shaders.World3D.VertexColor = vertexcolor;
+							graphics.Shaders.World3D.HighlightColor = CalculateHighlightColor((t == highlighted) && showhighlight, (t.Selected && showselection));
+
+							// Apply changes
+							ApplyMatrices3D();
 							graphics.Shaders.World3D.ApplySettings();
 
 							// Apply buffer
@@ -1018,13 +971,14 @@ namespace CodeImp.DoomBuilder.Rendering
 													  - (General.Map.VisualCamera.Position - vg1.BoundingBox[0]).GetLengthSq()));
 			}
 
-			// Begin rendering with this shader
-			graphics.Shaders.World3D.BeginPass(shaderpass);
-
+			ImageData curtexture;
 			VisualSector sector = null;
 			RenderPass currentpass = RenderPass.Solid;
 			long curtexturename = 0;
-			ImageData curtexture;
+			float fogfactor = -1;
+
+			// Begin rendering with this shader
+			graphics.Shaders.World3D.BeginPass(shaderpass);
 
 			// Go for all geometry
 			foreach(VisualGeometry g in geopass)
@@ -1062,9 +1016,7 @@ namespace CodeImp.DoomBuilder.Rendering
 						curtexture.CreateTexture();
 
 					// Apply texture
-					if(!graphics.Shaders.Enabled) graphics.Device.SetTexture(0, curtexture.Texture);
 					graphics.Shaders.World3D.Texture1 = curtexture.Texture;
-
 					curtexturename = g.Texture.LongName;
 				}
 
@@ -1075,7 +1027,7 @@ namespace CodeImp.DoomBuilder.Rendering
 					if(g.Sector.NeedsUpdateGeo) g.Sector.Update();
 
 					// Only do this sector when a vertexbuffer is created
-					//mxd. no Map means that sector was deleted recently, I suppose
+					//mxd. No Map means that sector was deleted recently, I suppose
 					if(g.Sector.GeometryBuffer != null && g.Sector.Sector.Map != null)
 					{
 						// Change current sector
@@ -1096,7 +1048,7 @@ namespace CodeImp.DoomBuilder.Rendering
 					int wantedshaderpass = (((g == highlighted) && showhighlight) || (g.Selected && showselection)) ? highshaderpass : shaderpass;
 
 					//mxd. Render fog?
-					if(!(!General.Settings.GZDrawFog || fullbrightness || sector.Sector.Brightness > 247))
+					if(General.Settings.GZDrawFog && !fullbrightness && sector.Sector.Brightness < 248)
 						wantedshaderpass += 8;
 
 					// Switch shader pass?
@@ -1105,28 +1057,28 @@ namespace CodeImp.DoomBuilder.Rendering
 						graphics.Shaders.World3D.EndPass();
 						graphics.Shaders.World3D.BeginPass(wantedshaderpass);
 						currentshaderpass = wantedshaderpass;
-					}
 
-					// Set the colors to use
-					if(!graphics.Shaders.Enabled)
-					{
-						graphics.Device.SetTexture(2, (g.Selected && showselection) ? selectionimage.Texture : null);
-						graphics.Device.SetTexture(3, ((g == highlighted) && showhighlight) ? highlightimage.Texture : null);
-					}
-					else
-					{
-						//mxd. set variables for fog rendering
+						//mxd. Set variables for fog rendering?
 						if(wantedshaderpass > 7)
 						{
 							graphics.Shaders.World3D.World = world;
-							graphics.Shaders.World3D.LightColor = sector.Sector.FogColor;
-							graphics.Shaders.World3D.CameraPosition = new Vector4(cameraposition.x, cameraposition.y, cameraposition.z, sector.FogDistance);
 						}
-
-						graphics.Shaders.World3D.SetHighlightColor(CalculateHighlightColor((g == highlighted) && showhighlight, (g.Selected && showselection)).ToArgb());
-						graphics.Shaders.World3D.ApplySettings();
 					}
 
+					// Set variables for fog rendering?
+					if(wantedshaderpass > 7 && g.FogFactor != fogfactor)
+					{
+						graphics.Shaders.World3D.CameraPosition = new Vector4(cameraposition.x, cameraposition.y, cameraposition.z, g.FogFactor);
+						fogfactor = g.FogFactor;
+					}
+
+					// Set the colors to use
+					graphics.Shaders.World3D.LightColor = sector.Sector.FogColor;
+					graphics.Shaders.World3D.HighlightColor = CalculateHighlightColor((g == highlighted) && showhighlight, (g.Selected && showselection));
+
+					// Apply changes
+					graphics.Shaders.World3D.ApplySettings();
+
 					// Render!
 					graphics.Device.DrawPrimitives(PrimitiveType.TriangleList, g.VertexOffset, g.Triangles);
 				}
@@ -1145,9 +1097,13 @@ namespace CodeImp.DoomBuilder.Rendering
 				thingspass.Sort((vt1, vt2) => (int)((General.Map.VisualCamera.Position - vt2.BoundingBox[0]).GetLengthSq()
 												  - (General.Map.VisualCamera.Position - vt1.BoundingBox[0]).GetLengthSq()));
 
+				Color4 litcolor;
+				
 				// Reset vars
 				currentpass = RenderPass.Solid;
 				curtexturename = 0;
+				Color4 vertexcolor = new Color4();
+				fogfactor = -1;
 
 				// Render things collected
 				foreach(VisualThing t in thingspass)
@@ -1185,10 +1141,7 @@ namespace CodeImp.DoomBuilder.Rendering
 							curtexture.CreateTexture();
 
 						// Apply texture
-						if(!graphics.Shaders.Enabled)
-							graphics.Device.SetTexture(0, curtexture.Texture);
 						graphics.Shaders.World3D.Texture1 = curtexture.Texture;
-
 						curtexturename = t.Texture.LongName;
 					}
 
@@ -1196,7 +1149,7 @@ namespace CodeImp.DoomBuilder.Rendering
 					if(t.Thing.IsModel &&
 					   (General.Settings.GZDrawModelsMode == ModelRenderMode.ALL ||
 						General.Settings.GZDrawModelsMode == ModelRenderMode.ACTIVE_THINGS_FILTER ||
-						(General.Settings.GZDrawModelsMode == ModelRenderMode.SELECTION && t.Selected)))
+					   (General.Settings.GZDrawModelsMode == ModelRenderMode.SELECTION && t.Selected)))
 						continue;
 
 					// Update buffer if needed
@@ -1212,24 +1165,31 @@ namespace CodeImp.DoomBuilder.Rendering
 						if(General.Settings.GZDrawFog && !fullbrightness && t.Thing.Sector != null && (t.Thing.Sector.HasFogColor || t.Thing.Sector.Brightness < 248))
 							wantedshaderpass += 8;
 
-						//mxd. if current thing is light - set it's color to light color
-						Color4 litcolor = new Color4();
+						//mxd. Create the matrix for positioning 
+						world = CreateThingPositionMatrix(t);
+
+						//mxd. If current thing is light - set it's color to light color
 						if(Array.IndexOf(GZBuilder.GZGeneral.GZ_LIGHTS, t.Thing.Type) != -1 && !fullbrightness)
 						{
-							wantedshaderpass += 4; //render using one of passes, which uses World3D.VertexColor
-							graphics.Shaders.World3D.VertexColor = t.LightColor;
+							wantedshaderpass += 4; // Render using one of passes, which uses World3D.VertexColor
 							litcolor = t.LightColor;
+							vertexcolor = t.LightColor;
 						}
-						//mxd. check if Thing is affected by dynamic lights and set color accordingly
+						//mxd. Check if Thing is affected by dynamic lights and set color accordingly
 						else if(General.Settings.GZDrawLightsMode != LightRenderMode.NONE && !fullbrightness && lightthings.Count > 0)
 						{
 							litcolor = GetLitColorForThing(t);
 							if(litcolor.ToArgb() != 0)
 							{
-								wantedshaderpass += 4; //render using one of passes, which uses World3D.VertexColor
-								graphics.Shaders.World3D.VertexColor = new Color4(t.VertexColor) + litcolor;
+								wantedshaderpass += 4; // Render using one of passes, which uses World3D.VertexColor
+								vertexcolor = new Color4(t.VertexColor) + litcolor;
 							}
 						}
+						else
+						{
+							litcolor = new Color4();
+							vertexcolor = new Color4();
+						}
 
 						// Switch shader pass?
 						if(currentshaderpass != wantedshaderpass)
@@ -1239,53 +1199,26 @@ namespace CodeImp.DoomBuilder.Rendering
 							currentshaderpass = wantedshaderpass;
 						}
 
-						// Set the colors to use
-						if(!graphics.Shaders.Enabled)
-						{
-							graphics.Device.SetTexture(2, (t.Selected && showselection) ? selectionimage.Texture : null);
-							graphics.Device.SetTexture(3, ((t == highlighted) && showhighlight) ? highlightimage.Texture : null);
-						}
-						else
-						{
-							graphics.Shaders.World3D.SetHighlightColor(CalculateHighlightColor((t == highlighted) && showhighlight, (t.Selected && showselection)).ToArgb());
-						}
-
-						//mxd. Create the matrix for positioning 
-						if(t.Info.RenderMode == Thing.SpriteRenderMode.NORMAL) // Apply billboarding?
-						{
-							if(t.Info.XYBillboard)
-							{
-								world = Matrix.Translation(0f, 0f, -t.LocalCenterZ)
-									* Matrix.RotationX(Angle2D.PI - General.Map.VisualCamera.AngleZ)
-									* Matrix.Translation(0f, 0f, t.LocalCenterZ)
-									* billboard
-									* Matrix.Scaling(t.Thing.ScaleX, t.Thing.ScaleX, t.Thing.ScaleY)
-									* t.Position;
-							}
-							else
-							{
-								world = billboard
-										* Matrix.Scaling(t.Thing.ScaleX, t.Thing.ScaleX, t.Thing.ScaleY)
-										* t.Position;
-							}
-						}
-						else
-						{
-							world = Matrix.Scaling(t.Thing.ScaleX, t.Thing.ScaleX, t.Thing.ScaleY)
-									* t.Position;
-						}
-
-						ApplyMatrices3D();
-
-						//mxd. Set variables for fog rendering
+						//mxd. set variables for fog rendering?
 						if(wantedshaderpass > 7)
 						{
 							graphics.Shaders.World3D.World = world;
-							graphics.Shaders.World3D.LightColor = t.Thing.Sector.FogColor;
-							float fogdistance = (litcolor.ToArgb() != 0 ? VisualSector.MAXIMUM_FOG_DISTANCE : t.FogDistance);
-							graphics.Shaders.World3D.CameraPosition = new Vector4(cameraposition.x, cameraposition.y, cameraposition.z, fogdistance);
+
+							float curfogfactor = (litcolor.ToArgb() != 0 ? VisualThing.LIT_FOG_DENSITY_SCALER : t.FogFactor);
+							if(curfogfactor != fogfactor)
+							{
+								graphics.Shaders.World3D.CameraPosition = new Vector4(cameraposition.x, cameraposition.y, cameraposition.z, curfogfactor);
+								fogfactor = curfogfactor;
+							}
 						}
 
+						// Set the colors to use
+						graphics.Shaders.World3D.LightColor = t.Thing.Sector.FogColor;
+						graphics.Shaders.World3D.VertexColor = vertexcolor;
+						graphics.Shaders.World3D.HighlightColor = CalculateHighlightColor((t == highlighted) && showhighlight, (t.Selected && showselection));
+
+						// Apply changes
+						ApplyMatrices3D();
 						graphics.Shaders.World3D.ApplySettings();
 
 						// Apply buffer
@@ -1307,6 +1240,39 @@ namespace CodeImp.DoomBuilder.Rendering
 			graphics.Shaders.World3D.EndPass();
 		}
 
+		//mxd
+		private Matrix CreateThingPositionMatrix(VisualThing t)
+		{
+			Matrix result;
+
+			//mxd. Create the matrix for positioning 
+			if(t.Info.RenderMode == Thing.SpriteRenderMode.NORMAL) // Apply billboarding?
+			{
+				if(t.Info.XYBillboard)
+				{
+					result = Matrix.Translation(0f, 0f, -t.LocalCenterZ)
+						* Matrix.RotationX(Angle2D.PI - General.Map.VisualCamera.AngleZ)
+						* Matrix.Translation(0f, 0f, t.LocalCenterZ)
+						* billboard
+						* Matrix.Scaling(t.Thing.ScaleX, t.Thing.ScaleX, t.Thing.ScaleY)
+						* t.Position;
+				}
+				else
+				{
+					result = billboard
+							* Matrix.Scaling(t.Thing.ScaleX, t.Thing.ScaleX, t.Thing.ScaleY)
+							* t.Position;
+				}
+			}
+			else
+			{
+				result = Matrix.Scaling(t.Thing.ScaleX, t.Thing.ScaleX, t.Thing.ScaleY)
+						* t.Position;
+			}
+
+			return result;
+		}
+
 		//mxd. Dynamic lights pass!
 		private void RenderLights(Dictionary<ImageData, List<VisualGeometry>> geometrytolit, List<VisualThing> lights)
 		{
@@ -1428,18 +1394,17 @@ namespace CodeImp.DoomBuilder.Rendering
 			// Begin rendering with this shader
 			graphics.Shaders.World3D.BeginPass(currentshaderpass);
 
-			foreach (KeyValuePair<ModelData, List<VisualThing>> group in modelthings) 
+			foreach(KeyValuePair<ModelData, List<VisualThing>> group in modelthings) 
 			{
-				foreach (VisualThing t in group.Value) 
+				foreach(VisualThing t in group.Value) 
 				{
 					t.Update();
 					
 					Color4 vertexcolor = new Color4(t.VertexColor);
-					vertexcolor.Alpha = 1.0f;
-					
+
 					//check if model is affected by dynamic lights and set color accordingly
-					Color4 litcolor = new Color4();
-					if (General.Settings.GZDrawLightsMode != LightRenderMode.NONE && !fullbrightness && lightthings.Count > 0) 
+					Color4 litcolor;
+					if(General.Settings.GZDrawLightsMode != LightRenderMode.NONE && !fullbrightness && lightthings.Count > 0) 
 					{
 						litcolor = GetLitColorForThing(t);
 						graphics.Shaders.World3D.VertexColor = vertexcolor + litcolor;
@@ -1447,18 +1412,18 @@ namespace CodeImp.DoomBuilder.Rendering
 					else 
 					{
 						graphics.Shaders.World3D.VertexColor = vertexcolor;
-						litcolor = vertexcolor;
+						litcolor = new Color4();
 					}
 
 					// Determine the shader pass we want to use for this object
 					int wantedshaderpass = ((((t == highlighted) && showhighlight) || (t.Selected && showselection)) ? highshaderpass : shaderpass);
 
 					//mxd. if fog is enagled, switch to shader, which calculates it
-					if (General.Settings.GZDrawFog && !fullbrightness && t.Thing.Sector != null && (t.Thing.Sector.HasFogColor || t.Thing.Sector.Brightness < 248))
+					if(General.Settings.GZDrawFog && !fullbrightness && t.Thing.Sector != null && (t.Thing.Sector.HasFogColor || t.Thing.Sector.Brightness < 248))
 						wantedshaderpass += 8;
 
 					// Switch shader pass?
-					if (currentshaderpass != wantedshaderpass) 
+					if(currentshaderpass != wantedshaderpass) 
 					{
 						graphics.Shaders.World3D.EndPass();
 						graphics.Shaders.World3D.BeginPass(wantedshaderpass);
@@ -1466,15 +1431,7 @@ namespace CodeImp.DoomBuilder.Rendering
 					}
 
 					// Set the colors to use
-					if (!graphics.Shaders.Enabled) 
-					{
-						graphics.Device.SetTexture(2, (t.Selected && showselection) ? selectionimage.Texture : null);
-						graphics.Device.SetTexture(3, ((t == highlighted) && showhighlight) ? highlightimage.Texture : null);
-					} 
-					else 
-					{
-						graphics.Shaders.World3D.SetHighlightColor(CalculateHighlightColor((t == highlighted) && showhighlight, (t.Selected && showselection)).ToArgb());
-					}
+					graphics.Shaders.World3D.HighlightColor = CalculateHighlightColor((t == highlighted) && showhighlight, (t.Selected && showselection));
 
 					// Create the matrix for positioning / rotation
 					float sx = t.Thing.ScaleX * t.Thing.ActorScale.Width;
@@ -1487,12 +1444,12 @@ namespace CodeImp.DoomBuilder.Rendering
 					ApplyMatrices3D();
 
 					//mxd. set variables for fog rendering
-					if (wantedshaderpass > 7) 
+					if(wantedshaderpass > 7)
 					{
 						graphics.Shaders.World3D.World = world;
-						graphics.Shaders.World3D.LightColor = t.Thing.Sector.FogColor;
-						float fogdistance = (litcolor.ToArgb() != 0 ? VisualSector.MAXIMUM_FOG_DISTANCE : t.FogDistance);
-						graphics.Shaders.World3D.CameraPosition = new Vector4(cameraposition.x, cameraposition.y, cameraposition.z, fogdistance);
+						if(t.Thing.Sector != null) graphics.Shaders.World3D.LightColor = t.Thing.Sector.FogColor;
+						float fogfactor = (litcolor.ToArgb() != 0 ? VisualThing.LIT_FOG_DENSITY_SCALER : t.FogFactor);
+						graphics.Shaders.World3D.CameraPosition = new Vector4(cameraposition.x, cameraposition.y, cameraposition.z, fogfactor);
 					}
 
 					for(int i = 0; i < group.Key.Model.Meshes.Count; i++) 
@@ -1618,7 +1575,7 @@ namespace CodeImp.DoomBuilder.Rendering
 				(General.Settings.GZDrawModelsMode == ModelRenderMode.SELECTION && t.Selected))) 
 			{
 				ModelData mde = General.Map.Data.ModeldefEntries[t.Thing.Type];
-				if (!modelthings.ContainsKey(mde))
+				if(!modelthings.ContainsKey(mde))
 					modelthings.Add(mde, new List<VisualThing> { t });
 				else
 					modelthings[mde].Add(t);
@@ -1654,10 +1611,10 @@ namespace CodeImp.DoomBuilder.Rendering
 		}
 
 		//mxd
-		public void AddVisualVertices(VisualVertex[] verts) 
-		{
-			visualvertices = verts;
-		}
+		public void SetVisualVertices(List<VisualVertex> verts) { visualvertices = verts; }
+
+		//mxd
+		public void SetEventLines(List<Line3D> lines) { eventlines = lines; }
 
 		//mxd
 		private static bool BoundingBoxesIntersect(Vector3D[] bbox1, Vector3D[] bbox2) 
diff --git a/Source/Core/Rendering/Things2DShader.cs b/Source/Core/Rendering/Things2DShader.cs
index 4af674c1..7ce7d0a0 100644
--- a/Source/Core/Rendering/Things2DShader.cs
+++ b/Source/Core/Rendering/Things2DShader.cs
@@ -109,17 +109,18 @@ namespace CodeImp.DoomBuilder.Rendering
 				effect.SetValue(rendersettings, values);
 				Matrix world = manager.D3DDevice.Device.GetTransform(TransformState.World);
 				Matrix view = manager.D3DDevice.Device.GetTransform(TransformState.View);
-				effect.SetValue(transformsettings, Matrix.Multiply(world, view));
+				effect.SetValue(transformsettings, world * view);
 			}
 		}
 
 		//mxd. Used to render models
 		public void SetTransformSettings(Matrix world)
 		{
-			if (manager.Enabled) 
+			if(manager.Enabled) 
 			{
 				Matrix view = manager.D3DDevice.Device.GetTransform(TransformState.View);
-				effect.SetValue(transformsettings, Matrix.Multiply(world, view));
+				effect.SetValue(transformsettings, world * view);
+				settingschanged = true;
 			}
 		}
 		
diff --git a/Source/Core/Rendering/World3DShader.cs b/Source/Core/Rendering/World3DShader.cs
index cfb60e24..eb04f0b9 100644
--- a/Source/Core/Rendering/World3DShader.cs
+++ b/Source/Core/Rendering/World3DShader.cs
@@ -42,7 +42,7 @@ namespace CodeImp.DoomBuilder.Rendering
 		//lights
 		private readonly EffectHandle lightPositionAndRadiusHandle;
 		private readonly EffectHandle lightColorHandle;
-		private readonly EffectHandle worldHandle;
+		private readonly EffectHandle world;
 		//fog
 		private readonly EffectHandle camPosHandle;
 		//used in ModelReader
@@ -53,20 +53,96 @@ namespace CodeImp.DoomBuilder.Rendering
 
 		#region ================== Properties
 
-		public Matrix WorldViewProj { set { if(manager.Enabled) effect.SetValue<Matrix>(worldviewproj, value); } }
-		public Texture Texture1 { set { if(manager.Enabled) effect.SetTexture(texture1, value); } }
+		public Matrix WorldViewProj { set { if(manager.Enabled) effect.SetValue(worldviewproj, value); settingschanged = true; } }
+		public Texture Texture1 { set { if(manager.Enabled) effect.SetTexture(texture1, value); settingschanged = true; } }
 
 		//mxd
-		public Color4 VertexColor { set { if (manager.Enabled) effect.SetValue<Color4>(vertexColorHadle, value); } }
+		private Color4 vertexcolor;
+		public Color4 VertexColor
+		{
+			set 
+			{
+				if(manager.Enabled && vertexcolor != value)
+				{
+					effect.SetValue(vertexColorHadle, value);
+					vertexcolor = value;
+					settingschanged = true; 
+				}
+			} 
+		}
 		
 		//lights
-		public Color4 LightColor { set { if (manager.Enabled) effect.SetValue<Color4>(lightColorHandle, value); } }
-		public Vector4 LightPositionAndRadius { set { if (manager.Enabled) effect.SetValue(lightPositionAndRadiusHandle, value); } }
+		private Color4 lightcolor;
+		public Color4 LightColor
+		{
+			set
+			{
+				if(manager.Enabled && lightcolor != value)
+				{
+					effect.SetValue(lightColorHandle, value);
+					lightcolor = value;
+					settingschanged = true;
+				}
+			}
+		}
+
+		private Vector4 lightpos;
+		public Vector4 LightPositionAndRadius
+		{
+			set
+			{
+				if(manager.Enabled && value != lightpos)
+				{
+					effect.SetValue(lightPositionAndRadiusHandle, value);
+					lightpos = value;
+					settingschanged = true;
+				} 
+			}
+		}
 		
 		//fog
-		public Vector4 CameraPosition { set { if (manager.Enabled) effect.SetValue(camPosHandle, value); } }
+		private Vector4 campos;
+		public Vector4 CameraPosition
+		{
+			set
+			{
+				if(manager.Enabled && campos != value)
+				{
+					effect.SetValue(camPosHandle, value);
+					campos = value;
+					settingschanged = true;
+				}
+			}
+		}
 
-		public Matrix World { set { if (manager.Enabled) effect.SetValue<Matrix>(worldHandle, value); } }
+		private Matrix mworld;
+		public Matrix World
+		{
+			set
+			{
+				if(manager.Enabled && mworld != value)
+				{
+					effect.SetValue(world, value);
+					mworld = value;
+					settingschanged = true;
+				}
+			}
+		}
+
+		//mxd. This sets the highlight color
+		private Color4 hicolor;
+		public Color4 HighlightColor
+		{
+			set
+			{
+				if(manager.Enabled && hicolor != value)
+				{
+					effect.SetValue(highlightcolor, value);
+					hicolor = value;
+					settingschanged = true;
+				}
+			}
+		}
 
 		#endregion
 
@@ -97,7 +173,7 @@ namespace CodeImp.DoomBuilder.Rendering
 				//fog
 				camPosHandle = effect.GetParameter(null, "cameraPos");
 
-				worldHandle = effect.GetParameter(null, "world");
+				world = effect.GetParameter(null, "world");
 			}
 
 			// Initialize world vertex declaration
@@ -148,8 +224,7 @@ namespace CodeImp.DoomBuilder.Rendering
 				if(lightColorHandle != null) lightColorHandle.Dispose();
 				if(lightPositionAndRadiusHandle != null) lightPositionAndRadiusHandle.Dispose();
 				if(camPosHandle != null) camPosHandle.Dispose();
-				if(worldHandle != null) worldHandle.Dispose();
-
+				if(world != null) world.Dispose();
 
 				// Done
 				base.Dispose();
@@ -192,15 +267,6 @@ namespace CodeImp.DoomBuilder.Rendering
 			}
 		}
 
-		// This sets the highlight color
-		public void SetHighlightColor(int hicolor)
-		{
-			if(manager.Enabled)
-			{
-				effect.SetValue(highlightcolor, new Color4(hicolor));
-			}
-		}
-
 		// This sets up the render pipeline
 		public override void BeginPass(int index)
 		{
diff --git a/Source/Core/Resources/world3d.fx b/Source/Core/Resources/world3d.fx
index e748bd11..b1384149 100644
--- a/Source/Core/Resources/world3d.fx
+++ b/Source/Core/Resources/world3d.fx
@@ -86,7 +86,7 @@ PixelData vs_customvertexcolor(VertexData vd)
 	// Fill pixel data input
 	pd.pos = mul(float4(vd.pos, 1.0f), worldviewproj);
 	pd.color = vertexColor;
-	pd.color.a = 1.0f;
+	pd.color.a = vd.color.a;
 	pd.uv = vd.uv;
 	
 	// Return result
@@ -101,7 +101,7 @@ LitPixelData vs_customvertexcolor_fog(VertexData vd)
 	pd.pos = mul(float4(vd.pos, 1.0f), worldviewproj);
 	pd.pos_w = mul(float4(vd.pos, 1.0f), world);
 	pd.color = vertexColor;
-	pd.color.a = 1.0f;
+	pd.color.a = vd.color.a;
 	pd.uv = vd.uv;
 	pd.normal = vd.normal;
 	
@@ -166,11 +166,10 @@ float4 ps_fullbright_highlight(PixelData pd) : COLOR
 float4 getFogColor(LitPixelData pd, float4 color)
 {
 	float fogdist = max(16.0f, distance(pd.pos_w, cameraPos.xyz));
-	float fogfactor = min(1.0f, fogdist / cameraPos.w);
-	
-	//texture color completly replaced by fog color
-	if(fogfactor == 1.0f) return float4(lightColor.rgb, color.a);
-	return float4(lightColor.rgb * fogfactor + color.rgb * (1.0f - fogfactor), color.a);
+	float fogfactor = exp2(cameraPos.w * fogdist);
+
+	color.rgb = lerp(lightColor.rgb, color.rgb, fogfactor);
+	return color;
 }
 
 //mxd. Shaders with fog calculation
diff --git a/Source/Core/VisualModes/VisualGeometry.cs b/Source/Core/VisualModes/VisualGeometry.cs
index db98a1fd..d9b95d6d 100644
--- a/Source/Core/VisualModes/VisualGeometry.cs
+++ b/Source/Core/VisualModes/VisualGeometry.cs
@@ -31,6 +31,12 @@ namespace CodeImp.DoomBuilder.VisualModes
 {
 	public abstract class VisualGeometry : IVisualPickable
 	{
+		#region ================== Constants
+
+		public const float FOG_DENSITY_SCALER = -1.442692f / 256000f; //-1.442692f / 64000f; //mxd
+
+		#endregion
+
 		#region ================== Variables
 
 		// Texture
@@ -60,6 +66,7 @@ namespace CodeImp.DoomBuilder.VisualModes
 		
 		// Rendering
 		private RenderPass renderpass = RenderPass.Solid;
+		protected float fogfactor;
 		
 		// Sector buffer info
 		private int vertexoffset;
@@ -81,6 +88,7 @@ namespace CodeImp.DoomBuilder.VisualModes
 		//mxd
 		public Vector3D[] BoundingBox { get { return boundingBox; } }
 		public VisualGeometryType GeometryType { get { return geometrytype; } }
+		public float FogFactor { get { return fogfactor; } }
 
 		/// <summary>
 		/// Render pass in which this geometry must be rendered. Default is Solid.
@@ -192,6 +200,38 @@ namespace CodeImp.DoomBuilder.VisualModes
 			boundingBox = BoundingBoxTools.CalculateBoundingPlane(bbs);
 		}
 
+		//mxd. Calculate fogdistance
+		//TODO: this doesn't match any GZDoom light mode...
+		//GZDoom: gl_renderstate.h, SetFog();
+		//GZDoom: gl_lightlevel.cpp gl_SetFog();
+		protected float CalculateFogDensity(int brightness)
+		{
+			float density;
+			if(Sector.Sector.UsesOutsideFog && General.Map.Data.MapInfo.OutsideFogDensity > 0)
+			{
+				density = General.Map.Data.MapInfo.OutsideFogDensity;
+			}
+			else if(!Sector.Sector.UsesOutsideFog && General.Map.Data.MapInfo.FogDensity > 0)
+			{
+				density = General.Map.Data.MapInfo.FogDensity;
+			}
+			else if(brightness < 248)
+			{
+				density = General.Clamp(255 - brightness, 30, 255);
+			}
+			else
+			{
+				density = 0f;
+			}
+
+			if(Sector.Sector.HasFogColor)
+			{
+				density *= 4;
+			}
+
+			return density * FOG_DENSITY_SCALER;
+		}
+
 		//mxd. Used to get proper sector from 3d-floors
 		public virtual Sector GetControlSector() 
 		{
diff --git a/Source/Core/VisualModes/VisualMode.cs b/Source/Core/VisualModes/VisualMode.cs
index b55da7a2..0953ea6c 100644
--- a/Source/Core/VisualModes/VisualMode.cs
+++ b/Source/Core/VisualModes/VisualMode.cs
@@ -562,26 +562,24 @@ namespace CodeImp.DoomBuilder.VisualModes
 					// Things
 					foreach(Thing t in block.Things)
 					{
-						VisualThing vt;
-
 						// Not filtered out?
-						if(General.Map.ThingsFilter.IsThingVisible(t))
-						{
-							if(allthings.ContainsKey(t))
-							{
-								vt = allthings[t];
-							}
-							else
-							{
-								// Create new visual thing
-								vt = CreateVisualThing(t);
-								allthings.Add(t, vt);
-							}
+						if(!General.Map.ThingsFilter.IsThingVisible(t)) continue;
 
-							if(vt != null)
-							{
-								visiblethings.Add(vt);
-							}
+						VisualThing vt;
+						if(allthings.ContainsKey(t))
+						{
+							vt = allthings[t];
+						}
+						else
+						{
+							// Create new visual thing
+							vt = CreateVisualThing(t);
+							allthings.Add(t, vt);
+						}
+
+						if(vt != null)
+						{
+							visiblethings.Add(vt);
 						}
 					}
 				}
diff --git a/Source/Core/VisualModes/VisualSector.cs b/Source/Core/VisualModes/VisualSector.cs
index a23c9933..50b6fc9e 100644
--- a/Source/Core/VisualModes/VisualSector.cs
+++ b/Source/Core/VisualModes/VisualSector.cs
@@ -30,8 +30,6 @@ namespace CodeImp.DoomBuilder.VisualModes
 	{
 		#region ================== Constants
 
-		public const float MAXIMUM_FOG_DISTANCE = 2805f; //mxd. 255 * 11. Straight from GZDoom source.
-
 		#endregion
 
 		#region ================== Variables
@@ -42,9 +40,6 @@ namespace CodeImp.DoomBuilder.VisualModes
 		private Dictionary<Sidedef, List<VisualGeometry>> sidedefgeometry;
 		private VertexBuffer geobuffer;
 		private bool updategeo;
-
-		//mxd. Rendering
-		protected float fogdistance; // Distance, at which fog color completely replaces texture color of this thing
 		
 		// Original sector
 		private Sector sector;
@@ -60,7 +55,6 @@ namespace CodeImp.DoomBuilder.VisualModes
 		internal List<VisualGeometry> AllGeometry { get { return allgeometry; } }
 		internal VertexBuffer GeometryBuffer { get { return geobuffer; } }
 		internal bool NeedsUpdateGeo { get { return updategeo; } set { updategeo |= value; } }
-		public float FogDistance { get { return fogdistance; } } //mxd
 		
 		public bool IsDisposed { get { return isdisposed; } }
 		public Sector Sector { get { return sector; } }
diff --git a/Source/Core/VisualModes/VisualThing.cs b/Source/Core/VisualModes/VisualThing.cs
index 8e106766..b1d60e8a 100644
--- a/Source/Core/VisualModes/VisualThing.cs
+++ b/Source/Core/VisualModes/VisualThing.cs
@@ -37,6 +37,7 @@ namespace CodeImp.DoomBuilder.VisualModes
 		#region ================== Constants
 
 		protected const int FIXED_RADIUS = 8; //mxd. Used to render things with zero width and radius
+		internal const float LIT_FOG_DENSITY_SCALER = 255 * VisualGeometry.FOG_DENSITY_SCALER; //mxd
 
 		#endregion
 		
@@ -54,17 +55,18 @@ namespace CodeImp.DoomBuilder.VisualModes
 		// Geometry
 		private WorldVertex[] vertices;
 		private VertexBuffer geobuffer;
+		private VertexBuffer cagebuffer; //mxd
+		private int cagelength; //mxd
 		private bool updategeo;
 		private int triangles;
 		
 		// Rendering
 		private RenderPass renderpass;
 		private Matrix position;
-		private Matrix cagescales;
 		private int cameradistance;
 		private Color4 cagecolor;
 		protected bool sizeless; //mxd. Used to render visual things with 0 width and height
-		protected float fogdistance; //mxd. Distance, at which fog color completely replaces texture color of this thing
+		protected float fogfactor; //mxd
 
 		// Selected?
 		protected bool selected;
@@ -73,7 +75,7 @@ namespace CodeImp.DoomBuilder.VisualModes
 		private bool isdisposed;
 
 		//mxd
-		private int thingheight;
+		protected float thingheight;
 
 		//mxd. light properties
 		private DynamicLightType lightType;
@@ -96,18 +98,18 @@ namespace CodeImp.DoomBuilder.VisualModes
 		#region ================== Properties
 		
 		internal VertexBuffer GeometryBuffer { get { return geobuffer; } }
+		internal VertexBuffer CageBuffer { get { return cagebuffer; } } //mxd
+		internal int CageLength { get { return cagelength; } } //mxd
 		internal bool NeedsUpdateGeo { get { return updategeo; } }
 		internal int Triangles { get { return triangles; } }
 		internal Matrix Position { get { return position; } }
-		internal Matrix CageScales { get { return cagescales; } }
 		internal Color4 CageColor { get { return cagecolor; } }
 		public ThingTypeInfo Info { get { return info; } } //mxd
 		
 		//mxd
 		internal int VertexColor { get { return vertices.Length > 0 ? vertices[0].c : 0;} }
 		public int CameraDistance { get { return cameradistance; } }
-		public bool Sizeless { get { return sizeless; } }
-		public float FogDistance { get { return fogdistance; } }
+		public float FogFactor { get { return fogfactor; } }
 		public Vector3 Center
 		{ 
 			get
@@ -163,7 +165,6 @@ namespace CodeImp.DoomBuilder.VisualModes
 			this.thing = t;
 			this.renderpass = RenderPass.Mask;
 			this.position = Matrix.Identity;
-			this.cagescales = Matrix.Identity;
 
 			//mxd
 			lightType = DynamicLightType.NONE;
@@ -187,6 +188,8 @@ namespace CodeImp.DoomBuilder.VisualModes
 				// Clean up
 				if(geobuffer != null) geobuffer.Dispose();
 				geobuffer = null;
+				if(cagebuffer != null) cagebuffer.Dispose(); //mxd
+				cagebuffer = null; //mxd
 
 				// Unregister resource
 				General.Map.Graphics.UnregisterResource(this);
@@ -223,15 +226,6 @@ namespace CodeImp.DoomBuilder.VisualModes
 			//Update();
 		}
 
-		/// <summary>
-		/// Sets the size of the cage around the thing geometry.
-		/// </summary>
-		protected void SetCageSize(float radius, float height)
-		{
-			cagescales = Matrix.Scaling(radius, radius, height);
-			thingheight = (int)height; //mxd
-		}
-
 		/// <summary>
 		/// Sets the color of the cage around the thing geometry.
 		/// </summary>
@@ -389,14 +383,14 @@ namespace CodeImp.DoomBuilder.VisualModes
 		public virtual void Update()
 		{
 			// Do we need to update the geometry buffer?
-			if (updategeo)
+			if(updategeo)
 			{
 				// Trash geometry buffer
 				if (geobuffer != null) geobuffer.Dispose();
 				geobuffer = null;
 
 				// Any vertics?
-				if (vertices.Length > 0) 
+				if(vertices.Length > 0) 
 				{
 					// Make a new buffer
 					geobuffer = new VertexBuffer(General.Map.Graphics.Device, WorldVertex.Stride * vertices.Length,
@@ -409,6 +403,80 @@ namespace CodeImp.DoomBuilder.VisualModes
 					bufferstream.Dispose();
 				}
 
+				// Trash cage buffer
+				if(cagebuffer != null) cagebuffer.Dispose();
+				cagebuffer = null;
+
+				// Make a new cage
+				List<WorldVertex> cageverts;
+				if(sizeless)
+				{
+					WorldVertex v0 = new WorldVertex(-info.Radius + position_v3.X, -info.Radius + position_v3.Y, position_v3.Z);
+					WorldVertex v1 = new WorldVertex( info.Radius + position_v3.X,  info.Radius + position_v3.Y, position_v3.Z);
+					WorldVertex v2 = new WorldVertex( info.Radius + position_v3.X, -info.Radius + position_v3.Y, position_v3.Z);
+					WorldVertex v3 = new WorldVertex(-info.Radius + position_v3.X,  info.Radius + position_v3.Y, position_v3.Z);
+					WorldVertex v4 = new WorldVertex(position_v3.X, position_v3.Y,  info.Radius + position_v3.Z);
+					WorldVertex v5 = new WorldVertex(position_v3.X, position_v3.Y, -info.Radius + position_v3.Z);
+
+					cageverts = new List<WorldVertex>(new[] { v0, v1, v2, v3, v4, v5 });
+				}
+				else
+				{
+					float top = position_v3.Z + info.Height;
+					float bottom = position_v3.Z;
+
+					WorldVertex v0 = new WorldVertex(-info.Radius + position_v3.X, -info.Radius + position_v3.Y, bottom);
+					WorldVertex v1 = new WorldVertex(-info.Radius + position_v3.X,  info.Radius + position_v3.Y, bottom);
+					WorldVertex v2 = new WorldVertex( info.Radius + position_v3.X,  info.Radius + position_v3.Y, bottom);
+					WorldVertex v3 = new WorldVertex( info.Radius + position_v3.X, -info.Radius + position_v3.Y, bottom);
+
+					WorldVertex v4 = new WorldVertex(-info.Radius + position_v3.X, -info.Radius + position_v3.Y, top);
+					WorldVertex v5 = new WorldVertex(-info.Radius + position_v3.X,  info.Radius + position_v3.Y, top);
+					WorldVertex v6 = new WorldVertex( info.Radius + position_v3.X,  info.Radius + position_v3.Y, top);
+					WorldVertex v7 = new WorldVertex( info.Radius + position_v3.X, -info.Radius + position_v3.Y, top);
+
+					cageverts = new List<WorldVertex>(new[] { v0, v1,
+															  v1, v2,
+															  v2, v3,
+															  v3, v0,
+															  v4, v5, 
+															  v5, v6,
+															  v6, v7,
+															  v7, v4,
+															  v0, v4,
+															  v1, v5,
+															  v2, v6,
+															  v3, v7 });
+				}
+				
+				// Make new arrow
+				if(Thing.IsDirectional)
+				{
+					Matrix transform = Matrix.Scaling(info.Radius, info.Radius, info.Radius)
+						* (Matrix.RotationY(-Thing.RollRad) * Matrix.RotationX(-Thing.PitchRad) * Matrix.RotationZ(Thing.Angle))
+						* (sizeless ? position : position * Matrix.Translation(0.0f, 0.0f, thingheight / 2f));
+					
+					WorldVertex a0 = new WorldVertex(Vector3D.Transform( 0.0f,  0.0f,  0.0f, transform)); //start
+					WorldVertex a1 = new WorldVertex(Vector3D.Transform( 0.0f, -1.5f,  0.0f, transform)); //end
+					WorldVertex a2 = new WorldVertex(Vector3D.Transform( 0.2f, -1.1f,  0.2f, transform));
+					WorldVertex a3 = new WorldVertex(Vector3D.Transform(-0.2f, -1.1f,  0.2f, transform));
+					WorldVertex a4 = new WorldVertex(Vector3D.Transform( 0.2f, -1.1f, -0.2f, transform));
+					WorldVertex a5 = new WorldVertex(Vector3D.Transform(-0.2f, -1.1f, -0.2f, transform));
+
+					cageverts.AddRange(new[] {a0, a1,
+											  a1, a2,
+											  a1, a3,
+											  a1, a4,
+											  a1, a5});
+				}
+
+				// Create buffer
+				WorldVertex[] cv = cageverts.ToArray();
+				cagelength = cv.Length / 2;
+				cagebuffer = new VertexBuffer(General.Map.Graphics.Device, WorldVertex.Stride * cv.Length, Usage.WriteOnly | Usage.Dynamic, VertexFormat.None, Pool.Default);
+				cagebuffer.Lock(0, WorldVertex.Stride * cv.Length, LockFlags.None).WriteRange(cv);
+				cagebuffer.Unlock();
+				
 				//mxd. Check if thing is light
 				CheckLightState();
 
diff --git a/Source/Core/VisualModes/VisualVertex.cs b/Source/Core/VisualModes/VisualVertex.cs
index b13f6e98..42a089cb 100644
--- a/Source/Core/VisualModes/VisualVertex.cs
+++ b/Source/Core/VisualModes/VisualVertex.cs
@@ -66,12 +66,6 @@ namespace CodeImp.DoomBuilder.VisualModes
 			this.ceilingVertex = ceilingVertex;
 		}
 
-		// This sets the distance from the camera
-		internal void CalculateCameraDistance(Vector2D campos) 
-		{
-			cameradistance = Vector2D.DistanceSq(vertex.Position, campos);
-		}
-
 		public void SetPosition(Vector3D pos) 
 		{
 			position = Matrix.Translation(pos.x, pos.y, pos.z);
diff --git a/Source/Core/Windows/LinedefEditFormUDMF.Designer.cs b/Source/Core/Windows/LinedefEditFormUDMF.Designer.cs
index 0456d3e7..98aa5d0b 100644
--- a/Source/Core/Windows/LinedefEditFormUDMF.Designer.cs
+++ b/Source/Core/Windows/LinedefEditFormUDMF.Designer.cs
@@ -56,6 +56,7 @@ namespace CodeImp.DoomBuilder.Windows
 			this.activationGroup = new System.Windows.Forms.GroupBox();
 			this.missingactivation = new System.Windows.Forms.PictureBox();
 			this.idgroup = new System.Windows.Forms.GroupBox();
+			this.tagsselector = new CodeImp.DoomBuilder.GZBuilder.Controls.TagsSelector();
 			this.tabfront = new System.Windows.Forms.TabPage();
 			this.frontside = new System.Windows.Forms.CheckBox();
 			this.frontgroup = new System.Windows.Forms.GroupBox();
@@ -78,6 +79,7 @@ namespace CodeImp.DoomBuilder.Windows
 			this.pfcFrontOffsetMid = new CodeImp.DoomBuilder.GZBuilder.Controls.PairedFieldsControl();
 			this.pfcFrontOffsetBottom = new CodeImp.DoomBuilder.GZBuilder.Controls.PairedFieldsControl();
 			this.groupBox5 = new System.Windows.Forms.GroupBox();
+			this.resetfrontlight = new System.Windows.Forms.Button();
 			this.frontsector = new CodeImp.DoomBuilder.Controls.ButtonsNumericTextbox();
 			this.customfrontbutton = new System.Windows.Forms.Button();
 			this.lightFront = new CodeImp.DoomBuilder.Controls.ButtonsNumericTextbox();
@@ -89,6 +91,7 @@ namespace CodeImp.DoomBuilder.Windows
 			this.backside = new System.Windows.Forms.CheckBox();
 			this.backgroup = new System.Windows.Forms.GroupBox();
 			this.groupBox4 = new System.Windows.Forms.GroupBox();
+			this.resetbacklight = new System.Windows.Forms.Button();
 			this.backsector = new CodeImp.DoomBuilder.Controls.ButtonsNumericTextbox();
 			this.custombackbutton = new System.Windows.Forms.Button();
 			this.lightBack = new CodeImp.DoomBuilder.Controls.ButtonsNumericTextbox();
@@ -121,7 +124,6 @@ namespace CodeImp.DoomBuilder.Windows
 			this.fieldslist = new CodeImp.DoomBuilder.Controls.FieldsEditorControl();
 			this.imagelist = new System.Windows.Forms.ImageList(this.components);
 			this.tooltip = new System.Windows.Forms.ToolTip(this.components);
-			this.tagsselector = new CodeImp.DoomBuilder.GZBuilder.Controls.TagsSelector();
 			label2 = new System.Windows.Forms.Label();
 			label11 = new System.Windows.Forms.Label();
 			label12 = new System.Windows.Forms.Label();
@@ -456,6 +458,13 @@ namespace CodeImp.DoomBuilder.Windows
 			this.idgroup.TabStop = false;
 			this.idgroup.Text = " Identification ";
 			// 
+			// tagsselector
+			// 
+			this.tagsselector.Location = new System.Drawing.Point(6, 21);
+			this.tagsselector.Name = "tagsselector";
+			this.tagsselector.Size = new System.Drawing.Size(524, 60);
+			this.tagsselector.TabIndex = 0;
+			// 
 			// tabfront
 			// 
 			this.tabfront.Controls.Add(this.frontside);
@@ -757,6 +766,7 @@ namespace CodeImp.DoomBuilder.Windows
 			// 
 			// groupBox5
 			// 
+			this.groupBox5.Controls.Add(this.resetfrontlight);
 			this.groupBox5.Controls.Add(this.frontsector);
 			this.groupBox5.Controls.Add(label11);
 			this.groupBox5.Controls.Add(this.customfrontbutton);
@@ -769,6 +779,17 @@ namespace CodeImp.DoomBuilder.Windows
 			this.groupBox5.TabIndex = 42;
 			this.groupBox5.TabStop = false;
 			// 
+			// resetfrontlight
+			// 
+			this.resetfrontlight.Image = global::CodeImp.DoomBuilder.Properties.Resources.Reset;
+			this.resetfrontlight.Location = new System.Drawing.Point(233, 50);
+			this.resetfrontlight.Name = "resetfrontlight";
+			this.resetfrontlight.Size = new System.Drawing.Size(23, 23);
+			this.resetfrontlight.TabIndex = 28;
+			this.tooltip.SetToolTip(this.resetfrontlight, "Reset Front Brightness");
+			this.resetfrontlight.UseVisualStyleBackColor = true;
+			this.resetfrontlight.Click += new System.EventHandler(this.resetfrontlight_Click);
+			// 
 			// frontsector
 			// 
 			this.frontsector.AllowDecimal = false;
@@ -818,7 +839,7 @@ namespace CodeImp.DoomBuilder.Windows
 			// cbLightAbsoluteFront
 			// 
 			this.cbLightAbsoluteFront.AutoSize = true;
-			this.cbLightAbsoluteFront.Location = new System.Drawing.Point(164, 53);
+			this.cbLightAbsoluteFront.Location = new System.Drawing.Point(164, 54);
 			this.cbLightAbsoluteFront.Name = "cbLightAbsoluteFront";
 			this.cbLightAbsoluteFront.Size = new System.Drawing.Size(67, 17);
 			this.cbLightAbsoluteFront.TabIndex = 27;
@@ -910,6 +931,7 @@ namespace CodeImp.DoomBuilder.Windows
 			// 
 			// groupBox4
 			// 
+			this.groupBox4.Controls.Add(this.resetbacklight);
 			this.groupBox4.Controls.Add(this.backsector);
 			this.groupBox4.Controls.Add(label12);
 			this.groupBox4.Controls.Add(this.custombackbutton);
@@ -922,6 +944,17 @@ namespace CodeImp.DoomBuilder.Windows
 			this.groupBox4.TabIndex = 46;
 			this.groupBox4.TabStop = false;
 			// 
+			// resetbacklight
+			// 
+			this.resetbacklight.Image = global::CodeImp.DoomBuilder.Properties.Resources.Reset;
+			this.resetbacklight.Location = new System.Drawing.Point(233, 50);
+			this.resetbacklight.Name = "resetbacklight";
+			this.resetbacklight.Size = new System.Drawing.Size(23, 23);
+			this.resetbacklight.TabIndex = 31;
+			this.tooltip.SetToolTip(this.resetbacklight, "Reset Back Brightness");
+			this.resetbacklight.UseVisualStyleBackColor = true;
+			this.resetbacklight.Click += new System.EventHandler(this.resetbacklight_Click);
+			// 
 			// backsector
 			// 
 			this.backsector.AllowDecimal = false;
@@ -981,7 +1014,7 @@ namespace CodeImp.DoomBuilder.Windows
 			// cbLightAbsoluteBack
 			// 
 			this.cbLightAbsoluteBack.AutoSize = true;
-			this.cbLightAbsoluteBack.Location = new System.Drawing.Point(164, 53);
+			this.cbLightAbsoluteBack.Location = new System.Drawing.Point(164, 54);
 			this.cbLightAbsoluteBack.Name = "cbLightAbsoluteBack";
 			this.cbLightAbsoluteBack.Size = new System.Drawing.Size(67, 17);
 			this.cbLightAbsoluteBack.TabIndex = 30;
@@ -1339,13 +1372,6 @@ namespace CodeImp.DoomBuilder.Windows
 			this.imagelist.Images.SetKeyName(0, "Check.png");
 			this.imagelist.Images.SetKeyName(1, "SearchClear.png");
 			// 
-			// tagsselector
-			// 
-			this.tagsselector.Location = new System.Drawing.Point(6, 21);
-			this.tagsselector.Name = "tagsselector";
-			this.tagsselector.Size = new System.Drawing.Size(524, 60);
-			this.tagsselector.TabIndex = 0;
-			// 
 			// LinedefEditFormUDMF
 			// 
 			this.AcceptButton = this.apply;
@@ -1489,5 +1515,7 @@ namespace CodeImp.DoomBuilder.Windows
 		private CodeImp.DoomBuilder.Controls.CommentEditor commenteditor;
 		private CodeImp.DoomBuilder.Controls.ArgumentsControl argscontrol;
 		private CodeImp.DoomBuilder.GZBuilder.Controls.TagsSelector tagsselector;
+		private System.Windows.Forms.Button resetfrontlight;
+		private System.Windows.Forms.Button resetbacklight;
 	}
 }
\ No newline at end of file
diff --git a/Source/Core/Windows/LinedefEditFormUDMF.cs b/Source/Core/Windows/LinedefEditFormUDMF.cs
index 0a5adc40..83dcf4bf 100644
--- a/Source/Core/Windows/LinedefEditFormUDMF.cs
+++ b/Source/Core/Windows/LinedefEditFormUDMF.cs
@@ -558,6 +558,10 @@ namespace CodeImp.DoomBuilder.Windows
 			tagsselector.FinishSetup(); //mxd
 			commenteditor.FinishSetup(); //mxd
 
+			//mxd. Update brightness reset buttons
+			resetfrontlight.Visible = (cbLightAbsoluteFront.CheckState != CheckState.Unchecked || lightFront.GetResult(0) != 0);
+			resetbacklight.Visible = (cbLightAbsoluteBack.CheckState != CheckState.Unchecked || lightBack.GetResult(0) != 0);
+
 			//mxd. Update some labels
 			if (frontside.CheckState != CheckState.Unchecked)
 			{
@@ -1274,6 +1278,7 @@ namespace CodeImp.DoomBuilder.Windows
 				}
 			}
 
+			resetfrontlight.Visible = (cbLightAbsoluteFront.CheckState != CheckState.Unchecked || lightFront.Text != "0");
 			General.Map.IsChanged = true;
 			if(OnValuesChanged != null) OnValuesChanged(this, EventArgs.Empty);
 		}
@@ -1301,7 +1306,7 @@ namespace CodeImp.DoomBuilder.Windows
 					if(l.Back != null) 
 					{
 						bool absolute = false;
-						switch (cbLightAbsoluteBack.CheckState)
+						switch(cbLightAbsoluteBack.CheckState)
 						{
 							case CheckState.Indeterminate:
 								absolute = l.Back.Fields.GetValue("lightabsolute", false);
@@ -1318,6 +1323,7 @@ namespace CodeImp.DoomBuilder.Windows
 				}
 			}
 
+			resetbacklight.Visible = (cbLightAbsoluteBack.CheckState != CheckState.Unchecked || lightBack.Text != "0");
 			General.Map.IsChanged = true;
 			if(OnValuesChanged != null) OnValuesChanged(this, EventArgs.Empty);
 		}
@@ -1364,6 +1370,7 @@ namespace CodeImp.DoomBuilder.Windows
 				}
 			}
 
+			resetfrontlight.Visible = (cbLightAbsoluteFront.CheckState != CheckState.Unchecked || lightFront.Text != "0");
 			General.Map.IsChanged = true;
 			if(OnValuesChanged != null) OnValuesChanged(this, EventArgs.Empty);
 		}
@@ -1410,6 +1417,55 @@ namespace CodeImp.DoomBuilder.Windows
 				}
 			}
 
+			resetbacklight.Visible = (cbLightAbsoluteBack.CheckState != CheckState.Unchecked || lightBack.Text != "0");
+			General.Map.IsChanged = true;
+			if(OnValuesChanged != null) OnValuesChanged(this, EventArgs.Empty);
+		}
+
+		private void resetfrontlight_Click(object sender, EventArgs e)
+		{
+			MakeUndo(); //mxd
+
+			preventchanges = true;
+
+			cbLightAbsoluteFront.Checked = false;
+			lightFront.Text = "0";
+
+			foreach(Linedef l in lines)
+			{
+				if(l.Front == null) continue;
+				if(l.Front.Fields.ContainsKey("lightabsolute")) l.Front.Fields.Remove("lightabsolute");
+				if(l.Front.Fields.ContainsKey("light")) l.Front.Fields.Remove("light");
+			}
+
+			preventchanges = false;
+
+			resetfrontlight.Visible = false;
+			lightFront.Focus();
+			General.Map.IsChanged = true;
+			if(OnValuesChanged != null) OnValuesChanged(this, EventArgs.Empty);
+		}
+
+		private void resetbacklight_Click(object sender, EventArgs e)
+		{
+			MakeUndo(); //mxd
+
+			preventchanges = true;
+
+			cbLightAbsoluteBack.Checked = false;
+			lightBack.Text = "0";
+
+			foreach(Linedef l in lines)
+			{
+				if(l.Back == null) continue;
+				if(l.Back.Fields.ContainsKey("lightabsolute")) l.Back.Fields.Remove("lightabsolute");
+				if(l.Back.Fields.ContainsKey("light")) l.Back.Fields.Remove("light");
+			}
+
+			preventchanges = false;
+
+			resetbacklight.Visible = false;
+			lightBack.Focus();
 			General.Map.IsChanged = true;
 			if(OnValuesChanged != null) OnValuesChanged(this, EventArgs.Empty);
 		}
diff --git a/Source/Core/Windows/SectorEditFormUDMF.Designer.cs b/Source/Core/Windows/SectorEditFormUDMF.Designer.cs
index 83a1d63b..f2d7f589 100644
--- a/Source/Core/Windows/SectorEditFormUDMF.Designer.cs
+++ b/Source/Core/Windows/SectorEditFormUDMF.Designer.cs
@@ -40,6 +40,7 @@
 			System.Windows.Forms.Label label15;
 			System.Windows.Forms.Label label6;
 			System.Windows.Forms.Label label5;
+			this.tagsselector = new CodeImp.DoomBuilder.GZBuilder.Controls.TagsSelector();
 			this.soundsequence = new System.Windows.Forms.ComboBox();
 			this.resetsoundsequence = new System.Windows.Forms.Button();
 			this.fadeColor = new CodeImp.DoomBuilder.GZBuilder.Controls.ColorFieldsControl();
@@ -60,6 +61,7 @@
 			this.flags = new CodeImp.DoomBuilder.Controls.CheckboxArrayControl();
 			this.tabSurfaces = new System.Windows.Forms.TabPage();
 			this.groupBox2 = new System.Windows.Forms.GroupBox();
+			this.resetfloorlight = new System.Windows.Forms.Button();
 			this.labelFloorOffsets = new System.Windows.Forms.Label();
 			this.labelFloorScale = new System.Windows.Forms.Label();
 			this.cbUseFloorLineAngles = new System.Windows.Forms.CheckBox();
@@ -77,6 +79,7 @@
 			this.floorOffsets = new CodeImp.DoomBuilder.GZBuilder.Controls.PairedFieldsControl();
 			this.floortex = new CodeImp.DoomBuilder.Controls.FlatSelectorControl();
 			this.groupBox1 = new System.Windows.Forms.GroupBox();
+			this.resetceillight = new System.Windows.Forms.Button();
 			this.labelCeilOffsets = new System.Windows.Forms.Label();
 			this.labelCeilScale = new System.Windows.Forms.Label();
 			this.cbUseCeilLineAngles = new System.Windows.Forms.CheckBox();
@@ -105,7 +108,6 @@
 			this.cancel = new System.Windows.Forms.Button();
 			this.apply = new System.Windows.Forms.Button();
 			this.tooltip = new System.Windows.Forms.ToolTip(this.components);
-			this.tagsselector = new CodeImp.DoomBuilder.GZBuilder.Controls.TagsSelector();
 			groupaction = new System.Windows.Forms.GroupBox();
 			groupeffect = new System.Windows.Forms.GroupBox();
 			label14 = new System.Windows.Forms.Label();
@@ -145,6 +147,13 @@
 			groupaction.TabStop = false;
 			groupaction.Text = " Identification ";
 			// 
+			// tagsselector
+			// 
+			this.tagsselector.Location = new System.Drawing.Point(6, 21);
+			this.tagsselector.Name = "tagsselector";
+			this.tagsselector.Size = new System.Drawing.Size(478, 60);
+			this.tagsselector.TabIndex = 0;
+			// 
 			// groupeffect
 			// 
 			groupeffect.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
@@ -526,6 +535,7 @@
 			// 
 			this.groupBox2.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
 						| System.Windows.Forms.AnchorStyles.Right)));
+			this.groupBox2.Controls.Add(this.resetfloorlight);
 			this.groupBox2.Controls.Add(this.labelFloorOffsets);
 			this.groupBox2.Controls.Add(this.labelFloorScale);
 			this.groupBox2.Controls.Add(this.cbUseFloorLineAngles);
@@ -549,6 +559,17 @@
 			this.groupBox2.TabStop = false;
 			this.groupBox2.Text = " Floor ";
 			// 
+			// resetfloorlight
+			// 
+			this.resetfloorlight.Image = global::CodeImp.DoomBuilder.Properties.Resources.Reset;
+			this.resetfloorlight.Location = new System.Drawing.Point(246, 114);
+			this.resetfloorlight.Name = "resetfloorlight";
+			this.resetfloorlight.Size = new System.Drawing.Size(23, 23);
+			this.resetfloorlight.TabIndex = 60;
+			this.tooltip.SetToolTip(this.resetfloorlight, "Reset Floor Brightness");
+			this.resetfloorlight.UseVisualStyleBackColor = true;
+			this.resetfloorlight.Click += new System.EventHandler(this.resetfloorlight_Click);
+			// 
 			// labelFloorOffsets
 			// 
 			this.labelFloorOffsets.Location = new System.Drawing.Point(6, 27);
@@ -572,7 +593,7 @@
 			// cbUseFloorLineAngles
 			// 
 			this.cbUseFloorLineAngles.AutoSize = true;
-			this.cbUseFloorLineAngles.Location = new System.Drawing.Point(181, 147);
+			this.cbUseFloorLineAngles.Location = new System.Drawing.Point(181, 148);
 			this.cbUseFloorLineAngles.Name = "cbUseFloorLineAngles";
 			this.cbUseFloorLineAngles.Size = new System.Drawing.Size(113, 17);
 			this.cbUseFloorLineAngles.TabIndex = 57;
@@ -583,7 +604,7 @@
 			// 
 			// floorAngleControl
 			// 
-			this.floorAngleControl.Angle = -270;
+			this.floorAngleControl.Angle = -450;
 			this.floorAngleControl.AngleOffset = 90;
 			this.floorAngleControl.Location = new System.Drawing.Point(6, 132);
 			this.floorAngleControl.Name = "floorAngleControl";
@@ -661,7 +682,7 @@
 			// floorLightAbsolute
 			// 
 			this.floorLightAbsolute.AutoSize = true;
-			this.floorLightAbsolute.Location = new System.Drawing.Point(181, 117);
+			this.floorLightAbsolute.Location = new System.Drawing.Point(181, 118);
 			this.floorLightAbsolute.Name = "floorLightAbsolute";
 			this.floorLightAbsolute.Size = new System.Drawing.Size(67, 17);
 			this.floorLightAbsolute.TabIndex = 49;
@@ -760,6 +781,7 @@
 			// 
 			this.groupBox1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
 						| System.Windows.Forms.AnchorStyles.Right)));
+			this.groupBox1.Controls.Add(this.resetceillight);
 			this.groupBox1.Controls.Add(this.labelCeilOffsets);
 			this.groupBox1.Controls.Add(this.labelCeilScale);
 			this.groupBox1.Controls.Add(this.cbUseCeilLineAngles);
@@ -783,6 +805,17 @@
 			this.groupBox1.TabStop = false;
 			this.groupBox1.Text = " Ceiling ";
 			// 
+			// resetceillight
+			// 
+			this.resetceillight.Image = global::CodeImp.DoomBuilder.Properties.Resources.Reset;
+			this.resetceillight.Location = new System.Drawing.Point(246, 114);
+			this.resetceillight.Name = "resetceillight";
+			this.resetceillight.Size = new System.Drawing.Size(23, 23);
+			this.resetceillight.TabIndex = 62;
+			this.tooltip.SetToolTip(this.resetceillight, "Reset Ceiling Brightness");
+			this.resetceillight.UseVisualStyleBackColor = true;
+			this.resetceillight.Click += new System.EventHandler(this.resetceillight_Click);
+			// 
 			// labelCeilOffsets
 			// 
 			this.labelCeilOffsets.Location = new System.Drawing.Point(6, 27);
@@ -806,7 +839,7 @@
 			// cbUseCeilLineAngles
 			// 
 			this.cbUseCeilLineAngles.AutoSize = true;
-			this.cbUseCeilLineAngles.Location = new System.Drawing.Point(181, 147);
+			this.cbUseCeilLineAngles.Location = new System.Drawing.Point(181, 148);
 			this.cbUseCeilLineAngles.Name = "cbUseCeilLineAngles";
 			this.cbUseCeilLineAngles.Size = new System.Drawing.Size(113, 17);
 			this.cbUseCeilLineAngles.TabIndex = 56;
@@ -817,7 +850,7 @@
 			// 
 			// ceilAngleControl
 			// 
-			this.ceilAngleControl.Angle = -270;
+			this.ceilAngleControl.Angle = -450;
 			this.ceilAngleControl.AngleOffset = 90;
 			this.ceilAngleControl.Location = new System.Drawing.Point(6, 132);
 			this.ceilAngleControl.Name = "ceilAngleControl";
@@ -895,7 +928,7 @@
 			// ceilLightAbsolute
 			// 
 			this.ceilLightAbsolute.AutoSize = true;
-			this.ceilLightAbsolute.Location = new System.Drawing.Point(181, 117);
+			this.ceilLightAbsolute.Location = new System.Drawing.Point(181, 118);
 			this.ceilLightAbsolute.Name = "ceilLightAbsolute";
 			this.ceilLightAbsolute.Size = new System.Drawing.Size(67, 17);
 			this.ceilLightAbsolute.TabIndex = 49;
@@ -1127,13 +1160,6 @@
 			this.tooltip.InitialDelay = 10;
 			this.tooltip.ReshowDelay = 100;
 			// 
-			// tagsselector
-			// 
-			this.tagsselector.Location = new System.Drawing.Point(6, 21);
-			this.tagsselector.Name = "tagsselector";
-			this.tagsselector.Size = new System.Drawing.Size(478, 60);
-			this.tagsselector.TabIndex = 0;
-			// 
 			// SectorEditFormUDMF
 			// 
 			this.AcceptButton = this.apply;
@@ -1245,5 +1271,7 @@
 		private System.Windows.Forms.TabPage tabcomment;
 		private CodeImp.DoomBuilder.Controls.CommentEditor commenteditor;
 		private CodeImp.DoomBuilder.GZBuilder.Controls.TagsSelector tagsselector;
+		private System.Windows.Forms.Button resetfloorlight;
+		private System.Windows.Forms.Button resetceillight;
 	}
 }
\ No newline at end of file
diff --git a/Source/Core/Windows/SectorEditFormUDMF.cs b/Source/Core/Windows/SectorEditFormUDMF.cs
index 8223acc2..984856a1 100644
--- a/Source/Core/Windows/SectorEditFormUDMF.cs
+++ b/Source/Core/Windows/SectorEditFormUDMF.cs
@@ -464,6 +464,10 @@ namespace CodeImp.DoomBuilder.Windows
 			labelFloorOffsets.Enabled = floorOffsets.NonDefaultValue;
 			labelFloorScale.Enabled = floorScale.NonDefaultValue;
 
+			//mxd. Update brightness reset buttons
+			resetceillight.Visible = (ceilLightAbsolute.CheckState != CheckState.Unchecked || ceilBrightness.GetResult(0) != 0);
+			resetfloorlight.Visible = (floorLightAbsolute.CheckState != CheckState.Unchecked || floorBrightness.GetResult(0) != 0);
+
 			//mxd. Angle steps
 			anglesteps.Sort();
 			if(useCeilLineAngles) ceilRotation.StepValues = anglesteps;
@@ -1134,6 +1138,7 @@ namespace CodeImp.DoomBuilder.Windows
 				}
 			}
 
+			resetceillight.Visible = (ceilLightAbsolute.CheckState != CheckState.Unchecked || ceilBrightness.Text != "0");
 			General.Map.IsChanged = true;
 			if(OnValuesChanged != null)	OnValuesChanged(this, EventArgs.Empty);
 		}
@@ -1173,6 +1178,7 @@ namespace CodeImp.DoomBuilder.Windows
 				}
 			}
 
+			resetfloorlight.Visible = (floorLightAbsolute.CheckState != CheckState.Unchecked || floorBrightness.Text != "0");
 			General.Map.IsChanged = true;
 			if(OnValuesChanged != null)	OnValuesChanged(this, EventArgs.Empty);
 		}
@@ -1218,6 +1224,7 @@ namespace CodeImp.DoomBuilder.Windows
 				}
 			}
 
+			resetceillight.Visible = (ceilLightAbsolute.CheckState != CheckState.Unchecked || ceilBrightness.Text != "0");
 			General.Map.IsChanged = true;
 			if(OnValuesChanged != null)	OnValuesChanged(this, EventArgs.Empty);
 		}
@@ -1263,10 +1270,57 @@ namespace CodeImp.DoomBuilder.Windows
 				}
 			}
 
+			resetfloorlight.Visible = (floorLightAbsolute.CheckState != CheckState.Unchecked || floorBrightness.Text != "0");
 			General.Map.IsChanged = true;
 			if(OnValuesChanged != null)	OnValuesChanged(this, EventArgs.Empty);
 		}
 
+		private void resetceillight_Click(object sender, EventArgs e)
+		{
+			MakeUndo(); //mxd
+
+			preventchanges = true;
+
+			ceilLightAbsolute.Checked = false;
+			ceilBrightness.Text = "0";
+
+			foreach(Sector s in sectors)
+			{
+				if(s.Fields.ContainsKey("lightceilingabsolute")) s.Fields.Remove("lightceilingabsolute");
+				if(s.Fields.ContainsKey("lightceiling")) s.Fields.Remove("lightceiling");
+			}
+
+			preventchanges = false;
+
+			resetceillight.Visible = false;
+			ceilBrightness.Focus();
+			General.Map.IsChanged = true;
+			if(OnValuesChanged != null) OnValuesChanged(this, EventArgs.Empty);
+		}
+
+		private void resetfloorlight_Click(object sender, EventArgs e)
+		{
+			MakeUndo(); //mxd
+
+			preventchanges = true;
+
+			floorLightAbsolute.Checked = false;
+			floorBrightness.Text = "0";
+
+			foreach(Sector s in sectors)
+			{
+				if(s.Fields.ContainsKey("lightfloorabsolute")) s.Fields.Remove("lightfloorabsolute");
+				if(s.Fields.ContainsKey("lightfloor")) s.Fields.Remove("lightfloor");
+			}
+
+			preventchanges = false;
+
+			resetfloorlight.Visible = false;
+			floorBrightness.Focus();
+			General.Map.IsChanged = true;
+			if(OnValuesChanged != null) OnValuesChanged(this, EventArgs.Empty);
+		}
+
 		#endregion
 
 		#region ================== Slope Utility (mxd)
diff --git a/Source/Plugins/BuilderEffects/BuilderEffects.csproj b/Source/Plugins/BuilderEffects/BuilderEffects.csproj
index 77cc0203..b85696f5 100644
--- a/Source/Plugins/BuilderEffects/BuilderEffects.csproj
+++ b/Source/Plugins/BuilderEffects/BuilderEffects.csproj
@@ -42,6 +42,14 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release + Profiler|x86' ">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>..\..\..\Build\Plugins\</OutputPath>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core">
diff --git a/Source/Plugins/BuilderModes/BuilderModes.csproj b/Source/Plugins/BuilderModes/BuilderModes.csproj
index 4c595e12..6df62788 100644
--- a/Source/Plugins/BuilderModes/BuilderModes.csproj
+++ b/Source/Plugins/BuilderModes/BuilderModes.csproj
@@ -44,6 +44,15 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release + Profiler|x86' ">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>..\..\..\Build\Plugins\</OutputPath>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core">
diff --git a/Source/Plugins/BuilderModes/ClassicModes/ThingsMode.cs b/Source/Plugins/BuilderModes/ClassicModes/ThingsMode.cs
index 91bf9f0b..9567907b 100644
--- a/Source/Plugins/BuilderModes/ClassicModes/ThingsMode.cs
+++ b/Source/Plugins/BuilderModes/ClassicModes/ThingsMode.cs
@@ -23,6 +23,7 @@ using System.Windows.Forms;
 using CodeImp.DoomBuilder.Actions;
 using CodeImp.DoomBuilder.Config;
 using CodeImp.DoomBuilder.Editing;
+using CodeImp.DoomBuilder.GZBuilder.Data;
 using CodeImp.DoomBuilder.Geometry;
 using CodeImp.DoomBuilder.GZBuilder.Geometry;
 using CodeImp.DoomBuilder.Map;
@@ -59,6 +60,9 @@ namespace CodeImp.DoomBuilder.BuilderModes
 		private bool editpressed;
 		private bool thinginserted;
 		private bool awaitingMouseClick; //mxd
+
+		//mxd. Event lines
+		private List<Line3D> persistenteventlines;
 		
 		#endregion
 
@@ -120,6 +124,9 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			General.Map.Map.ConvertSelection(SelectionType.Linedefs);
 			General.Map.Map.SelectionType = SelectionType.Things;
 			UpdateSelectionInfo(); //mxd
+
+			//mxd. Update event lines
+			persistenteventlines = LinksCollector.GetThingLinks(General.Map.ThingsFilter.VisibleThings, false);
 		}
 
 		// Mode disengages
@@ -190,11 +197,10 @@ namespace CodeImp.DoomBuilder.BuilderModes
 				}
 
 				//mxd
-				if(General.Settings.GZShowEventLines) 
+				if(General.Settings.GZShowEventLines)
 				{
-					List<Line3D> lines = GZBuilder.Data.LinksCollector.GetThingLinks(General.Map.ThingsFilter.VisibleThings);
-					lines.AddRange(eventlines);
-					if(lines.Count > 0) renderer.RenderArrows(lines);
+					eventlines.AddRange(persistenteventlines);
+					if(eventlines.Count > 0) renderer.RenderArrows(eventlines);
 				}
  
 				renderer.Finish();
@@ -411,26 +417,50 @@ namespace CodeImp.DoomBuilder.BuilderModes
 							General.Interface.OnEditFormValuesChanged -= thingEditForm_OnValuesChanged;
 
 							// When a single thing was selected, deselect it now
-							if (selected.Count == 1) 
+							if(selected.Count == 1) 
 							{
 								General.Map.Map.ClearSelectedThings();
 							} 
 							else if(result == DialogResult.Cancel) //mxd. Restore selection...
 							{ 
-								foreach (Thing t in selected) t.Selected = true;
+								foreach(Thing t in selected) t.Selected = true;
 							}
+
+							//mxd. Update event lines
+							persistenteventlines = LinksCollector.GetThingLinks(General.Map.ThingsFilter.VisibleThings, false);
+
+							// Update display
 							General.Interface.RedrawDisplay();
 						}
 					}
 				}
 
-				UpdateSelectionInfo(); //mxd
+				//mxd. Update selection info
+				UpdateSelectionInfo();
 			}
 
 			editpressed = false;
 			base.OnEditEnd();
 		}
 
+		//mxd
+		public override void OnUndoEnd()
+		{
+			base.OnUndoEnd();
+
+			// Update event lines
+			persistenteventlines = LinksCollector.GetThingLinks(General.Map.ThingsFilter.VisibleThings, false);
+		}
+
+		//mxd
+		public override void OnRedoEnd()
+		{
+			base.OnRedoEnd();
+
+			// Update event lines
+			persistenteventlines = LinksCollector.GetThingLinks(General.Map.ThingsFilter.VisibleThings, false);
+		}
+
 		//mxd. Otherwise event lines won't be drawn after panning finishes.
 		protected override void EndViewPan()
 		{
@@ -844,6 +874,9 @@ namespace CodeImp.DoomBuilder.BuilderModes
 				// Update things filter
 				General.Map.ThingsFilter.Update();
 
+				//mxd. Update event lines
+				persistenteventlines = LinksCollector.GetThingLinks(General.Map.ThingsFilter.VisibleThings, false);
+
 				// Redraw screen
 				General.Interface.RedrawDisplay();
 			}
@@ -970,6 +1003,9 @@ namespace CodeImp.DoomBuilder.BuilderModes
 				General.Map.IsChanged = true;
 				General.Map.ThingsFilter.Update();
 
+				//mxd. Update event lines
+				persistenteventlines = LinksCollector.GetThingLinks(General.Map.ThingsFilter.VisibleThings, false);
+
 				// Invoke a new mousemove so that the highlighted item updates
 				MouseEventArgs e = new MouseEventArgs(MouseButtons.None, 0, (int)mousepos.x, (int)mousepos.y, 0);
 				OnMouseMove(e);
diff --git a/Source/Plugins/BuilderModes/VisualModes/BaseVisualMode.cs b/Source/Plugins/BuilderModes/VisualModes/BaseVisualMode.cs
index 1b0b1b3a..841173dd 100644
--- a/Source/Plugins/BuilderModes/VisualModes/BaseVisualMode.cs
+++ b/Source/Plugins/BuilderModes/VisualModes/BaseVisualMode.cs
@@ -106,7 +106,8 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			public float scaleY; //mxd
 
 			private Sidedef controlside; //mxd
-			public Sidedef controlSide { //mxd
+			public Sidedef controlSide
+			{
 				get
 				{
 					return controlside;
@@ -519,6 +520,9 @@ namespace CodeImp.DoomBuilder.BuilderModes
 				foreach(KeyValuePair<Vertex, VisualVertexPair> pair in vertices)
 					pair.Value.Update();
 			}
+
+			//mxd. Update event lines (still better than updating them on every frame redraw)
+			renderer.SetEventLines(LinksCollector.GetThingLinks(General.Map.ThingsFilter.VisibleThings, true));
 		}
 
 		//mxd
@@ -658,13 +662,13 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			}
 
 			List<string> results = new List<string>();
-			if (numWalls > 0) results.Add(numWalls + (numWalls > 1 ? " sidedefs" : " sidedef"));
-			if (numFloors > 0) results.Add(numFloors + (numFloors > 1 ? " floors" : " floor"));
-			if (numCeilings > 0) results.Add(numCeilings + (numCeilings > 1 ? " ceilings" : " ceiling"));
-			if (numThings > 0) results.Add(numThings + (numThings > 1 ? " things" : " thing"));
-			if (numVerts > 0) results.Add(numVerts + (numVerts > 1 ? " vertices" : " vertex"));
+			if(numWalls > 0) results.Add(numWalls + (numWalls > 1 ? " sidedefs" : " sidedef"));
+			if(numFloors > 0) results.Add(numFloors + (numFloors > 1 ? " floors" : " floor"));
+			if(numCeilings > 0) results.Add(numCeilings + (numCeilings > 1 ? " ceilings" : " ceiling"));
+			if(numThings > 0) results.Add(numThings + (numThings > 1 ? " things" : " thing"));
+			if(numVerts > 0) results.Add(numVerts + (numVerts > 1 ? " vertices" : " vertex"));
 
-			if (results.Count == 0) 
+			if(results.Count == 0) 
 			{
 				General.Interface.DisplayStatus(StatusType.Selection, string.Empty);
 			} 
@@ -699,7 +703,7 @@ namespace CodeImp.DoomBuilder.BuilderModes
 		//mxd
 		internal void StopRealtimeInterfaceUpdate(SelectionType selectiontype)
 		{
-			switch (selectiontype)
+			switch(selectiontype)
 			{
 				case SelectionType.All:
 				case SelectionType.Linedefs:
@@ -1060,7 +1064,11 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			cameraflooroffset = General.Map.Config.ReadSetting("cameraflooroffset", cameraflooroffset);
 			cameraceilingoffset = General.Map.Config.ReadSetting("cameraceilingoffset", cameraceilingoffset);
 
+			// (Re)create special effects
 			RebuildElementData();
+
+			//mxd. Update event lines
+			renderer.SetEventLines(LinksCollector.GetThingLinks(General.Map.ThingsFilter.VisibleThings, true));
 		}
 
 		// When returning to another mode
@@ -1248,7 +1256,7 @@ namespace CodeImp.DoomBuilder.BuilderModes
 					foreach(KeyValuePair<Vertex, VisualVertexPair> pair in vertices)
 						verts.AddRange(pair.Value.Vertices);
 
-					renderer.AddVisualVertices(verts.ToArray());
+					renderer.SetVisualVertices(verts);
 				}
 				
 				// Done rendering geometry
@@ -1424,7 +1432,7 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			//mxd. As well as geometry...
 			foreach(KeyValuePair<Sector, VisualSector> group in visiblesectors)
 			{
-				if (group.Value is BaseVisualSector)
+				if(group.Value is BaseVisualSector)
 					(group.Value as BaseVisualSector).Rebuild();
 			}
 
@@ -1444,9 +1452,9 @@ namespace CodeImp.DoomBuilder.BuilderModes
 				RebuildElementData();
 
 			//mxd. As well as geometry...
-			foreach (KeyValuePair<Sector, VisualSector> group in visiblesectors) 
+			foreach(KeyValuePair<Sector, VisualSector> group in visiblesectors) 
 			{
-				if (group.Value is BaseVisualSector) (group.Value as BaseVisualSector).Rebuild();
+				if(group.Value is BaseVisualSector) (group.Value as BaseVisualSector).Rebuild();
 			}
 
 			RebuildSelectedObjectsList();
@@ -3117,6 +3125,9 @@ namespace CodeImp.DoomBuilder.BuilderModes
 
 			General.Map.IsChanged = true;
 			General.Map.ThingsFilter.Update();
+
+			// Update event lines
+			renderer.SetEventLines(LinksCollector.GetThingLinks(General.Map.ThingsFilter.VisibleThings, true));
 		}
 
 		//mxd. We'll just use currently selected objects 
@@ -3152,7 +3163,7 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			Vector3D[] translatedCoords = TranslateCoordinates(coords, hitpos, true);
 
 			//create things from copyBuffer
-			for (int i = 0; i < copybuffer.Count; i++) 
+			for(int i = 0; i < copybuffer.Count; i++) 
 			{
 				Thing t = CreateThing(new Vector2D());
 				if (t != null) 
@@ -3163,6 +3174,10 @@ namespace CodeImp.DoomBuilder.BuilderModes
 					blockmap.AddThing(t);
 				}
 			}
+
+			General.Map.IsChanged = true;
+			General.Map.ThingsFilter.Update();
+
 			PostAction();
 		}
 
diff --git a/Source/Plugins/BuilderModes/VisualModes/BaseVisualSector.cs b/Source/Plugins/BuilderModes/VisualModes/BaseVisualSector.cs
index c2562a49..3e54568b 100644
--- a/Source/Plugins/BuilderModes/VisualModes/BaseVisualSector.cs
+++ b/Source/Plugins/BuilderModes/VisualModes/BaseVisualSector.cs
@@ -35,21 +35,21 @@ namespace CodeImp.DoomBuilder.BuilderModes
 
 		#region ================== Variables
 		
-		protected BaseVisualMode mode;
-		
-		protected VisualFloor floor;
-		protected VisualCeiling ceiling;
-		protected List<VisualFloor> extrafloors;
-		protected List<VisualCeiling> extraceilings;
-		protected List<VisualFloor> extrabackfloors; //mxd
-		protected List<VisualCeiling> extrabackceilings; //mxd
-		protected Dictionary<Sidedef, VisualSidedefParts> sides;
+		private BaseVisualMode mode;
+
+		private VisualFloor floor;
+		private VisualCeiling ceiling;
+		private List<VisualFloor> extrafloors;
+		private List<VisualCeiling> extraceilings;
+		private List<VisualFloor> extrabackfloors; //mxd
+		private List<VisualCeiling> extrabackceilings; //mxd
+		private Dictionary<Sidedef, VisualSidedefParts> sides;
 		
 		// If this is set to true, the sector will be rebuilt after the action is performed.
-		protected bool changed;
+		private bool changed;
 		
 		// Prevent recursion
-		protected bool isupdating;
+		private bool isupdating;
 
 		#endregion
 
@@ -205,30 +205,12 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			if(!data.Updated) data.Update();
 			
 			// Create floor
-			floor = floor ?? new VisualFloor(mode, this);
-			if(floor.Setup(data.Floor, null))
-				base.AddGeometry(floor);
+			floor = (floor ?? new VisualFloor(mode, this));
+			if(floor.Setup(data.Floor, null)) AddGeometry(floor);
 			
 			// Create ceiling
-			ceiling = ceiling ?? new VisualCeiling(mode, this);
-			if(ceiling.Setup(data.Ceiling, null))
-				base.AddGeometry(ceiling);
-
-			//mxd. Calculate fogdistance
-			float brightness = Math.Max(30, Sector.Brightness);
-			if(Sector.HasFogColor)
-			{
-				if(Sector.UsesOutsideFog && General.Map.Data.MapInfo.OutsideFogDensity > 0)
-					fogdistance = General.Map.Data.MapInfo.OutsideFogDensity;
-				else if(!Sector.UsesOutsideFog && General.Map.Data.MapInfo.FogDensity > 0)
-					fogdistance = General.Map.Data.MapInfo.FogDensity;
-				else
-					fogdistance = brightness * 11.0f;
-			}
-			else
-			{
-				fogdistance = MAXIMUM_FOG_DISTANCE;
-			}
+			ceiling = (ceiling ?? new VisualCeiling(mode, this));
+			if(ceiling.Setup(data.Ceiling, null)) AddGeometry(ceiling);
 			
 			// Create 3D floors
 			for(int i = 0; i < data.ExtraFloors.Count; i++)
diff --git a/Source/Plugins/BuilderModes/VisualModes/BaseVisualThing.cs b/Source/Plugins/BuilderModes/VisualModes/BaseVisualThing.cs
index e2c13d2e..b6c39761 100644
--- a/Source/Plugins/BuilderModes/VisualModes/BaseVisualThing.cs
+++ b/Source/Plugins/BuilderModes/VisualModes/BaseVisualThing.cs
@@ -20,12 +20,10 @@ using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Windows.Forms;
-using CodeImp.DoomBuilder.GZBuilder.Data;
 using CodeImp.DoomBuilder.Map;
 using CodeImp.DoomBuilder.Rendering;
 using CodeImp.DoomBuilder.Geometry;
 using CodeImp.DoomBuilder.VisualModes;
-using CodeImp.DoomBuilder.Config;
 using CodeImp.DoomBuilder.Data;
 
 #endregion
@@ -165,11 +163,11 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			if(alpha == 255) RenderPass = RenderPass.Mask;
 
 			int sectorcolor = new PixelColor(alpha, 255, 255, 255).ToInt();
-			fogdistance = VisualSector.MAXIMUM_FOG_DISTANCE; //mxd
+			fogfactor = 0f; //mxd
 			
 			//mxd. Check thing size 
 			float thingradius = Thing.Size; // Thing.Size has ThingRadius arg override applied
-			float thingheight = Thing.Height; // Thing.Height has ThingHeight arg override applied
+			thingheight = Thing.Height; // Thing.Height has ThingHeight arg override applied
 
 			if(thingradius < 0.1f || thingheight < 0.1f) 
 			{
@@ -197,7 +195,8 @@ namespace CodeImp.DoomBuilder.BuilderModes
 
 					if(!info.Bright)
 					{
-						SectorLevel level = sd.GetLevelAboveOrAt(new Vector3D(Thing.Position.x, Thing.Position.y, Thing.Position.z + sd.Floor.plane.GetZ(Thing.Position)));
+						Vector3D thingpos = new Vector3D(Thing.Position.x, Thing.Position.y, Thing.Position.z + sd.Floor.plane.GetZ(Thing.Position));
+						SectorLevel level = sd.GetLevelAboveOrAt(thingpos);
 
 						//mxd. Let's use point on floor plane instead of Thing.Sector.FloorHeight;
 						if(nointeraction && level == null && sd.LightLevels.Count > 0) level = sd.LightLevels[sd.LightLevels.Count - 1];
@@ -205,36 +204,78 @@ namespace CodeImp.DoomBuilder.BuilderModes
 						//mxd. Use the light level of the highest surface when a thing is above highest sector level.
 						if(level != null)
 						{
+							// TECH: In GZDoom, ceiling glow doesn't affect thing brightness 
 							// Use sector brightness for color shading
-							PixelColor areabrightness = PixelColor.FromInt(mode.CalculateBrightness(level.brightnessbelow));
+							int brightness = level.brightnessbelow;
+
+							// Level is glowing
+							if(level.affectedbyglow && level.type == SectorLevelType.Floor)
+							{
+								// Get glow brightness
+								SectorData glowdata = (level.sector != Thing.Sector ? mode.GetSectorData(level.sector) : sd);
+								float planez = level.plane.GetZ(thingpos);
+
+								int glowbrightness = glowdata.FloorGlow.Brightness / 2;
+								SectorLevel nexthigher = sd.GetLevelAbove(new Vector3D(thingpos, planez));
+
+								// Interpolate thing brightness between glow and regular ones
+								if(nexthigher != null)
+								{
+									float higherz = nexthigher.plane.GetZ(thingpos);
+									float delta = General.Clamp(1.0f - (thingpos.z - planez) / (higherz - planez), 0f, 1f);
+									brightness = (int)((glowbrightness + level.sector.Brightness / 2) * delta + nexthigher.sector.Brightness * (1.0f - delta));
+								}
+							}
+							// Level below this one is glowing. Only possible for floor glow(?)
+							else if(level.type == SectorLevelType.Glow)
+							{
+								// Interpolate thing brightness between glow and regular ones
+								float planez = level.plane.GetZ(thingpos);
+								SectorLevel nextlower = sd.GetLevelBelow(new Vector3D(thingpos, planez));
+
+								if(nextlower != null && nextlower.affectedbyglow)
+								{
+									// Get glow brightness
+									SectorData glowdata = (nextlower.sector != Thing.Sector ? mode.GetSectorData(nextlower.sector) : sd);
+									int glowbrightness = (level.type == SectorLevelType.Ceiling ? glowdata.CeilingGlow.Brightness : glowdata.FloorGlow.Brightness) / 2;
+									
+									float lowerz = nextlower.plane.GetZ(thingpos);
+									float delta = General.Clamp((thingpos.z - lowerz) / (planez - lowerz), 0f, 1f);
+									brightness = (int)((glowbrightness + nextlower.sector.Brightness / 2) * (1.0f - delta) + level.sector.Brightness * delta);
+								}
+							}
+
+							PixelColor areabrightness = PixelColor.FromInt(mode.CalculateBrightness(brightness));
 							PixelColor areacolor = PixelColor.Modulate(level.colorbelow, areabrightness);
 							sectorcolor = areacolor.WithAlpha(alpha).ToInt();
-							int brightness = Math.Max((byte) 30, areabrightness.r); // R, G and B of areabrightness are the same
 
-							//mxd. Calculate fogdistance
-							if(Thing.Sector.HasFogColor)
+							//mxd. Calculate fogfactor
+							float density;
+							if(Thing.Sector.UsesOutsideFog && General.Map.Data.MapInfo.OutsideFogDensity > 0)
 							{
-								if(Thing.Sector.UsesOutsideFog && General.Map.Data.MapInfo.OutsideFogDensity > 0) fogdistance = General.Map.Data.MapInfo.OutsideFogDensity;
-								else if(!Thing.Sector.UsesOutsideFog && General.Map.Data.MapInfo.FogDensity > 0) fogdistance = General.Map.Data.MapInfo.FogDensity;
-								else fogdistance = brightness * 11.0f;
+								density = General.Map.Data.MapInfo.OutsideFogDensity;
 							}
-							// Thing is affected by floor glow
-							else if(level.affectedbyglow)
+							else if(!Thing.Sector.UsesOutsideFog && General.Map.Data.MapInfo.FogDensity > 0)
 							{
-								fogdistance = (float) Math.Pow(2.0f, brightness / 9.0f);
+								density = General.Map.Data.MapInfo.FogDensity;
+							}
+							else if(brightness < 248)
+							{
+								density = General.Clamp(255 - brightness, 30, 255);
 							}
-							// Thing is not affected by floor glow
 							else
 							{
-								fogdistance = (float) Math.Pow(2.0f, brightness / 9.0f) * 2.0f;
+								density = 0f;
 							}
+
+							if(level.sector.HasFogColor)
+							{
+								density *= 4;
+							}
+
+							fogfactor = density * VisualGeometry.FOG_DENSITY_SCALER;
 						}
 					}
-					else
-					{
-						// +BRIGHT things are not affected by fog
-						fogdistance = float.MaxValue;
-					}
 				}
 				
 				// Check if the texture is loaded
@@ -373,7 +414,6 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			
 			// Apply settings
 			SetPosition(pos);
-			SetCageSize(thingradius, thingheight);
 			SetCageColor(Thing.Color);
 
 			// Keep info for object picking
diff --git a/Source/Plugins/BuilderModes/VisualModes/VisualCeiling.cs b/Source/Plugins/BuilderModes/VisualModes/VisualCeiling.cs
index 67a332bd..6da6564a 100644
--- a/Source/Plugins/BuilderModes/VisualModes/VisualCeiling.cs
+++ b/Source/Plugins/BuilderModes/VisualModes/VisualCeiling.cs
@@ -121,9 +121,15 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			//mxd. Sky is always bright
 			int color;
 			if(s.CeilTexture == General.Map.Config.SkyFlatName)
+			{
 				color = -1; // That's white. With alpha. Not very impressive, eh?
+				fogfactor = 0; // No fog
+			}
 			else
+			{
 				color = PixelColor.FromInt(level.color).WithAlpha((byte)General.Clamp(level.alpha, 0, 255)).ToInt();
+				fogfactor = CalculateFogDensity(level.brightnessbelow);
+			}
 
 			// Make vertices
 			ReadOnlyCollection<Vector2D> triverts = base.Sector.Sector.Triangles.Vertices;
diff --git a/Source/Plugins/BuilderModes/VisualModes/VisualFloor.cs b/Source/Plugins/BuilderModes/VisualModes/VisualFloor.cs
index fa6303ac..eaa59400 100644
--- a/Source/Plugins/BuilderModes/VisualModes/VisualFloor.cs
+++ b/Source/Plugins/BuilderModes/VisualModes/VisualFloor.cs
@@ -93,7 +93,7 @@ namespace CodeImp.DoomBuilder.BuilderModes
 										  s.Fields.GetValue("yscalefloor", 1.0f));
 			
 			//Load floor texture
-			if (s.LongFloorTexture != MapSet.EmptyLongName)
+			if(s.LongFloorTexture != MapSet.EmptyLongName)
 			{
 				base.Texture = General.Map.Data.GetFlatImage(s.LongFloorTexture);
 				if(base.Texture == null || base.Texture is UnknownImage)
@@ -103,7 +103,7 @@ namespace CodeImp.DoomBuilder.BuilderModes
 				}
 				else
 				{
-					if (!base.Texture.IsImageLoaded)
+					if(!base.Texture.IsImageLoaded)
 						setuponloadedtexture = s.LongFloorTexture;
 				}
 			}
@@ -122,10 +122,16 @@ namespace CodeImp.DoomBuilder.BuilderModes
 
 			//mxd. Sky is always bright
 			int color;
-			if(s.FloorTexture == General.Map.Config.SkyFlatName) 
+			if(s.FloorTexture == General.Map.Config.SkyFlatName)
+			{
 				color = -1; // That's white. With alpha. Not very impressive, eh?
-			else 
+				fogfactor = 0; // No fog
+			}
+			else
+			{
 				color = PixelColor.FromInt(level.color).WithAlpha((byte)General.Clamp(level.alpha, 0, 255)).ToInt();
+				fogfactor = CalculateFogDensity(level.brightnessbelow);
+			}
 
 			// Make vertices
 			ReadOnlyCollection<Vector2D> triverts = base.Sector.Sector.Triangles.Vertices;
diff --git a/Source/Plugins/BuilderModes/VisualModes/VisualLower.cs b/Source/Plugins/BuilderModes/VisualModes/VisualLower.cs
index b36a8e59..ec6cde63 100644
--- a/Source/Plugins/BuilderModes/VisualModes/VisualLower.cs
+++ b/Source/Plugins/BuilderModes/VisualModes/VisualLower.cs
@@ -173,9 +173,11 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			
 			// Determine initial color
 			int lightlevel = lightabsolute ? lightvalue : sd.Ceiling.brightnessbelow + lightvalue;
-			//mxd
+
+			//mxd. This calculates light with doom-style wall shading
 			PixelColor wallbrightness = PixelColor.FromInt(mode.CalculateBrightness(lightlevel, Sidedef));
 			PixelColor wallcolor = PixelColor.Modulate(sd.Ceiling.colorbelow, wallbrightness);
+			fogfactor = CalculateFogDensity(lightlevel);
 			poly.color = wallcolor.WithAlpha(255).ToInt();
 			
 			// Cut off the part above the other floor
diff --git a/Source/Plugins/BuilderModes/VisualModes/VisualMiddle3D.cs b/Source/Plugins/BuilderModes/VisualModes/VisualMiddle3D.cs
index 7e519a7c..96877be4 100644
--- a/Source/Plugins/BuilderModes/VisualModes/VisualMiddle3D.cs
+++ b/Source/Plugins/BuilderModes/VisualModes/VisualMiddle3D.cs
@@ -212,9 +212,11 @@ namespace CodeImp.DoomBuilder.BuilderModes
 				
 				// Determine initial color
 				int lightlevel = lightabsolute ? lightvalue : sd.Ceiling.brightnessbelow + lightvalue;
+				
 				//mxd. This calculates light with doom-style wall shading
 				PixelColor wallbrightness = PixelColor.FromInt(mode.CalculateBrightness(lightlevel, Sidedef));
 				PixelColor wallcolor = PixelColor.Modulate(sd.Ceiling.colorbelow, wallbrightness);
+				fogfactor = CalculateFogDensity(lightlevel);
 				poly.color = wallcolor.WithAlpha(255).ToInt();
 
 				// Cut off the part above the 3D floor and below the 3D ceiling
diff --git a/Source/Plugins/BuilderModes/VisualModes/VisualMiddleBack.cs b/Source/Plugins/BuilderModes/VisualModes/VisualMiddleBack.cs
index fe2c3c47..eacdd571 100644
--- a/Source/Plugins/BuilderModes/VisualModes/VisualMiddleBack.cs
+++ b/Source/Plugins/BuilderModes/VisualModes/VisualMiddleBack.cs
@@ -192,9 +192,10 @@ namespace CodeImp.DoomBuilder.BuilderModes {
 				else
 					lightlevel = lightabsolute ? lightvalue : sourceside.Sector.Brightness + lightvalue;
 
-				//mxd
+				//mxd. This calculates light with doom-style wall shading
 				PixelColor wallbrightness = PixelColor.FromInt(mode.CalculateBrightness(lightlevel, Sidedef));
 				PixelColor wallcolor = PixelColor.Modulate(sd.Ceiling.colorbelow, wallbrightness);
+				fogfactor = CalculateFogDensity(lightlevel);
 				poly.color = wallcolor.WithAlpha(255).ToInt();
 
 				// Cut off the part above the 3D floor and below the 3D ceiling
@@ -238,25 +239,25 @@ namespace CodeImp.DoomBuilder.BuilderModes {
 				}
 
 				// Process the polygon and create vertices
-				if (polygons.Count > 0)
+				if(polygons.Count > 0)
 				{
 					List<WorldVertex> verts = CreatePolygonVertices(polygons, tp, sd, lightvalue, lightabsolute);
-					if (verts.Count > 2)
+					if(verts.Count > 2)
 					{
-						if ((extrafloor.Linedef.Args[2] & (int) Effect3DFloor.Flags.RenderAdditive) != 0) //mxd
+						if((extrafloor.Linedef.Args[2] & (int) Effect3DFloor.Flags.RenderAdditive) != 0) //mxd
 							this.RenderPass = RenderPass.Additive;
-						else if (extrafloor.Alpha < 255) 
+						else if(extrafloor.Alpha < 255) 
 							this.RenderPass = RenderPass.Alpha;
 						else 
 							this.RenderPass = RenderPass.Mask;
 
-						if (extrafloor.Alpha < 255)
+						if(extrafloor.Alpha < 255)
 						{
 							// Apply alpha to vertices
 							byte alpha = (byte) General.Clamp(extrafloor.Alpha, 0, 255);
-							if (alpha < 255)
+							if(alpha < 255)
 							{
-								for (int i = 0; i < verts.Count; i++)
+								for(int i = 0; i < verts.Count; i++)
 								{
 									WorldVertex v = verts[i];
 									PixelColor c = PixelColor.FromInt(v.c);
diff --git a/Source/Plugins/BuilderModes/VisualModes/VisualMiddleDouble.cs b/Source/Plugins/BuilderModes/VisualModes/VisualMiddleDouble.cs
index 54c55e6c..9a061fc8 100644
--- a/Source/Plugins/BuilderModes/VisualModes/VisualMiddleDouble.cs
+++ b/Source/Plugins/BuilderModes/VisualModes/VisualMiddleDouble.cs
@@ -181,9 +181,11 @@ namespace CodeImp.DoomBuilder.BuilderModes
 
 			// Determine initial color
 			int lightlevel = lightabsolute ? lightvalue : sd.Ceiling.brightnessbelow + lightvalue;
-			//mxd
+
+			//mxd. This calculates light with doom-style wall shading
 			PixelColor wallbrightness = PixelColor.FromInt(mode.CalculateBrightness(lightlevel, Sidedef));
 			PixelColor wallcolor = PixelColor.Modulate(sd.Ceiling.colorbelow, wallbrightness);
+			fogfactor = CalculateFogDensity(lightlevel);
 			poly.color = wallcolor.WithAlpha(255).ToInt();
 
 			// Cut off the part below the other floor and above the other ceiling
diff --git a/Source/Plugins/BuilderModes/VisualModes/VisualMiddleSingle.cs b/Source/Plugins/BuilderModes/VisualModes/VisualMiddleSingle.cs
index a33e777c..2f9f7804 100644
--- a/Source/Plugins/BuilderModes/VisualModes/VisualMiddleSingle.cs
+++ b/Source/Plugins/BuilderModes/VisualModes/VisualMiddleSingle.cs
@@ -175,9 +175,11 @@ namespace CodeImp.DoomBuilder.BuilderModes
 				
 				// Determine initial color
 				int lightlevel = lightabsolute ? lightvalue : sd.Ceiling.brightnessbelow + lightvalue;
-				//mxd
+
+				//mxd. This calculates light with doom-style wall shading
 				PixelColor wallbrightness = PixelColor.FromInt(mode.CalculateBrightness(lightlevel, Sidedef));
 				PixelColor wallcolor = PixelColor.Modulate(sd.Ceiling.colorbelow, wallbrightness);
+				fogfactor = CalculateFogDensity(lightlevel);
 				poly.color = wallcolor.WithAlpha(255).ToInt();
 
 				// Cut out pieces that overlap 3D floors in this sector
diff --git a/Source/Plugins/BuilderModes/VisualModes/VisualUpper.cs b/Source/Plugins/BuilderModes/VisualModes/VisualUpper.cs
index 2f7a23e8..d86db569 100644
--- a/Source/Plugins/BuilderModes/VisualModes/VisualUpper.cs
+++ b/Source/Plugins/BuilderModes/VisualModes/VisualUpper.cs
@@ -165,9 +165,11 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			
 			// Determine initial color
 			int lightlevel = lightabsolute ? lightvalue : sd.Ceiling.brightnessbelow + lightvalue;
-			//mxd
+
+			//mxd. This calculates light with doom-style wall shading
 			PixelColor wallbrightness = PixelColor.FromInt(mode.CalculateBrightness(lightlevel, Sidedef));
 			PixelColor wallcolor = PixelColor.Modulate(sd.Ceiling.colorbelow, wallbrightness);
+			fogfactor = CalculateFogDensity(lightlevel);
 			poly.color = wallcolor.WithAlpha(255).ToInt();
 			
 			// Cut off the part below the other ceiling
diff --git a/Source/Plugins/ColorPicker/ColorPicker.csproj b/Source/Plugins/ColorPicker/ColorPicker.csproj
index 8c81aace..f72f040d 100644
--- a/Source/Plugins/ColorPicker/ColorPicker.csproj
+++ b/Source/Plugins/ColorPicker/ColorPicker.csproj
@@ -42,6 +42,14 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release + Profiler|x86' ">
+    <OutputPath>..\..\..\Build\Plugins\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core">
diff --git a/Source/Plugins/CommentsPanel/CommentsPanel.csproj b/Source/Plugins/CommentsPanel/CommentsPanel.csproj
index 7fed6ff9..4be81555 100644
--- a/Source/Plugins/CommentsPanel/CommentsPanel.csproj
+++ b/Source/Plugins/CommentsPanel/CommentsPanel.csproj
@@ -57,6 +57,14 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release + Profiler|x86' ">
+    <OutputPath>..\..\..\Build\Plugins\</OutputPath>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core">
diff --git a/Source/Plugins/NodesViewer/NodesViewer.csproj b/Source/Plugins/NodesViewer/NodesViewer.csproj
index 3f4bb6c7..b705c7db 100644
--- a/Source/Plugins/NodesViewer/NodesViewer.csproj
+++ b/Source/Plugins/NodesViewer/NodesViewer.csproj
@@ -48,6 +48,16 @@
     <UseVSHostingProcess>false</UseVSHostingProcess>
     <ErrorReport>prompt</ErrorReport>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release + Profiler|x86' ">
+    <OutputPath>..\..\..\Build\Plugins\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
   <ItemGroup>
     <Compile Include="BuilderPlug.cs" />
     <Compile Include="Node.cs" />
diff --git a/Source/Plugins/SoundPropagationMode/SoundPropagation.csproj b/Source/Plugins/SoundPropagationMode/SoundPropagation.csproj
index 14308a78..3701bdd9 100644
--- a/Source/Plugins/SoundPropagationMode/SoundPropagation.csproj
+++ b/Source/Plugins/SoundPropagationMode/SoundPropagation.csproj
@@ -37,6 +37,14 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release + Profiler|x86' ">
+    <OutputPath>..\..\..\Build\Plugins\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core">
diff --git a/Source/Plugins/StairSectorBuilder/StairSectorBuilder.csproj b/Source/Plugins/StairSectorBuilder/StairSectorBuilder.csproj
index 5f89217c..1cc5537f 100644
--- a/Source/Plugins/StairSectorBuilder/StairSectorBuilder.csproj
+++ b/Source/Plugins/StairSectorBuilder/StairSectorBuilder.csproj
@@ -40,6 +40,14 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release + Profiler|x86' ">
+    <OutputPath>..\..\..\Build\Plugins\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="Builder, Version=1.14.0.2201, Culture=neutral, processorArchitecture=x86">
       <SpecificVersion>False</SpecificVersion>
diff --git a/Source/Plugins/TagExplorer/TagExplorer.csproj b/Source/Plugins/TagExplorer/TagExplorer.csproj
index 0f1a9dc5..d7754a95 100644
--- a/Source/Plugins/TagExplorer/TagExplorer.csproj
+++ b/Source/Plugins/TagExplorer/TagExplorer.csproj
@@ -40,6 +40,14 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release + Profiler|x86' ">
+    <OutputPath>..\..\..\Build\Plugins\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core">
diff --git a/Source/Plugins/TagRange/TagRange.csproj b/Source/Plugins/TagRange/TagRange.csproj
index 451ba6d0..a8492ed8 100644
--- a/Source/Plugins/TagRange/TagRange.csproj
+++ b/Source/Plugins/TagRange/TagRange.csproj
@@ -41,6 +41,13 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release + Profiler|x86' ">
+    <OutputPath>..\..\..\Build\Plugins\</OutputPath>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core">
diff --git a/Source/Plugins/VisplaneExplorer/VisplaneExplorer.csproj b/Source/Plugins/VisplaneExplorer/VisplaneExplorer.csproj
index 01a2bf05..2eea942d 100644
--- a/Source/Plugins/VisplaneExplorer/VisplaneExplorer.csproj
+++ b/Source/Plugins/VisplaneExplorer/VisplaneExplorer.csproj
@@ -47,6 +47,16 @@
     <UseVSHostingProcess>false</UseVSHostingProcess>
     <ErrorReport>prompt</ErrorReport>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release + Profiler|x86' ">
+    <OutputPath>..\..\..\Build\Plugins\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core">