diff --git a/Build/Configurations/Includes/ZDoom_linedefs.cfg b/Build/Configurations/Includes/ZDoom_linedefs.cfg
index 7d28f6b..ebb169b 100644
--- a/Build/Configurations/Includes/ZDoom_linedefs.cfg
+++ b/Build/Configurations/Includes/ZDoom_linedefs.cfg
@@ -3339,7 +3339,7 @@ zdoom
 		}
 		160
 		{
-			title = "Sector 3D Floor (OpenGL only)";
+			title = "Sector Set 3D Floor";
 			id = "Sector_Set3dFloor";
 			requiresactivation = false;
 			
@@ -3372,11 +3372,13 @@ zdoom
 				{
 					1 = "Disable light effects";
 					2 = "Restrict light inside";
-					4 = "Fog effect";
+					4 = "Fog effect (GZDoom) / Fade effect (ZDoom)";
 					8 = "Ignore bottom height";
 					16 = "Use upper texture";
 					32 = "Use lower texture";
 					64 = "Additive transluency";
+					512 = "Fade effect (no view blend)";
+					1024 = "Reset light effects";
 				}
 			}
 			arg3
diff --git a/Source/Plugins/BuilderModes/VisualModes/VisualMiddleBack.cs b/Source/Plugins/BuilderModes/VisualModes/VisualMiddleBack.cs
index d5e9113..2e96cf3 100644
--- a/Source/Plugins/BuilderModes/VisualModes/VisualMiddleBack.cs
+++ b/Source/Plugins/BuilderModes/VisualModes/VisualMiddleBack.cs
@@ -318,8 +318,38 @@ namespace CodeImp.DoomBuilder.BuilderModes
             else base.UpdateAfterTextureOffsetChange();
         }
 
-        // Return texture name
-        public override string GetTextureName() 
+		// Alpha based picking
+		public override bool PickAccurate(Vector3D from, Vector3D to, Vector3D dir, ref float u_ray)
+		{
+			if(!Texture.IsImageLoaded || (!Texture.IsTranslucent && !Texture.IsMasked)) return base.PickAccurate(from, to, dir, ref u_ray);
+
+			float u;
+			Sidedef sourceside = extrafloor.Linedef.Front;
+			new Line2D(from, to).GetIntersection(Sidedef.Line.Line, out u);
+			if(Sidedef != Sidedef.Line.Front) u = 1.0f - u;
+
+			// Get correct offset to texture space...
+			float texoffsetx = Sidedef.OffsetX + sourceside.OffsetX + UniFields.GetFloat(Sidedef.Fields, "offsetx_mid") + UniFields.GetFloat(sourceside.Fields, "offsetx_mid");
+			int ox = (int)Math.Floor((u * Sidedef.Line.Length * UniFields.GetFloat(sourceside.Fields, "scalex_mid", 1.0f) / Texture.Scale.x + texoffsetx) % Texture.Width);
+
+			float texoffsety = Sidedef.OffsetY + sourceside.OffsetY + UniFields.GetFloat(Sidedef.Fields, "offsety_mid") + UniFields.GetFloat(sourceside.Fields, "offsety_mid");
+			int oy = (int)Math.Ceiling(((pickintersect.z - sourceside.Sector.CeilHeight) * UniFields.GetFloat(sourceside.Fields, "scaley_mid", 1.0f) / Texture.Scale.y - texoffsety) % Texture.Height);
+
+			// Make sure offsets are inside of texture dimensions...
+			if(ox < 0) ox += Texture.Width;
+			if(oy < 0) oy += Texture.Height;
+
+			// Check pixel alpha
+			if(Texture.GetBitmap().GetPixel(General.Clamp(ox, 0, Texture.Width - 1), General.Clamp(Texture.Height - oy, 0, Texture.Height - 1)).A > 0)
+			{
+				return base.PickAccurate(from, to, dir, ref u_ray);
+			}
+
+			return false;
+		}
+
+		// Return texture name
+		public override string GetTextureName() 
 		{
 			//mxd
 			if((extrafloor.Linedef.Args[2] & (int)Effect3DFloor.Flags.UseUpperTexture) != 0)