diff --git a/CodeWalker.Core/GameFiles/Resources/Drawable.cs b/CodeWalker.Core/GameFiles/Resources/Drawable.cs
index 10b26b2..56ce4cd 100644
--- a/CodeWalker.Core/GameFiles/Resources/Drawable.cs
+++ b/CodeWalker.Core/GameFiles/Resources/Drawable.cs
@@ -3779,7 +3779,7 @@ namespace CodeWalker.GameFiles
                     case VertexComponentType.Float2: SetVector2(v, c, new Vector2(f(0), f(1))); break;
                     case VertexComponentType.Float3: SetVector3(v, c, new Vector3(f(0), f(1), f(2))); break;
                     case VertexComponentType.Float4: SetVector4(v, c, new Vector4(f(0), f(1), f(2), f(3))); break;
-                    case VertexComponentType.Dec3N: SetDec3N(v, c, new Vector4(f(0), f(1), f(2), f(3))); break;
+                    case VertexComponentType.RGBA8SNorm: SetRGBA8SNorm(v, c, new Vector4(f(0), f(1), f(2), f(3))); break;
                     case VertexComponentType.Half2: SetHalf2(v, c, new Half2(f(0), f(1))); break;
                     case VertexComponentType.Half4: SetHalf4(v, c, new Half4(f(0), f(1), f(2), f(3))); break;
                     case VertexComponentType.Colour: SetColour(v, c, new Color(b(0), b(1), b(2), b(3))); break;
@@ -3862,30 +3862,22 @@ namespace CodeWalker.GameFiles
                 }
             }
         }
-        public void SetDec3N(int v, int c, Vector4 val)
+        public void SetRGBA8SNorm(int v, int c, Vector4 val)
         {
-            //see https://docs.microsoft.com/en-us/previous-versions/windows/desktop/bb322868(v%3Dvs.85)
+            // Equivalent to DXGI_FORMAT_R8G8B8A8_SNORM
             if ((Info != null) && (VertexBytes != null))
             {
                 var s = Info.Stride;
                 var co = Info.GetComponentOffset(c);
                 var o = (v * s) + co;
-                var e = o + 4;//sizeof(Dec3N)
+                var e = o + 4;//sizeof(RGBA8SNorm)
                 if (e <= VertexBytes.Length)
                 {
-                    var sx = (val.X >= 0.0f);
-                    var sy = (val.Y >= 0.0f);
-                    var sz = (val.Z >= 0.0f);
-                    var sw = (val.W >= 0.0f);
-                    var x = Math.Min((uint)(Math.Abs(val.X) * 511.0f), 511);
-                    var y = Math.Min((uint)(Math.Abs(val.Y) * 511.0f), 511);
-                    var z = Math.Min((uint)(Math.Abs(val.Z) * 511.0f), 511);
-                    var w = Math.Min((uint)(val.W), 2);
-                    var ux = ((sx ? x : ~x) & 0x1FF) + (sx ? 0x200 : 0);
-                    var uy = ((sy ? y : ~y) & 0x1FF) + (sy ? 0x200 : 0);
-                    var uz = ((sz ? z : ~z) & 0x1FF) + (sz ? 0x200 : 0);
-                    var uw = sw ? w : 3;//(0,1,2)=>(0,1,2); (-1)=>(3)
-                    var u = ux + (uy << 10) + (uz << 20) + (uw << 30);
+                    var x = (byte)Math.Max(-127.0f, Math.Min(val.X * 127.0f, 127.0f));
+                    var y = (byte)Math.Max(-127.0f, Math.Min(val.Y * 127.0f, 127.0f));
+                    var z = (byte)Math.Max(-127.0f, Math.Min(val.Z * 127.0f, 127.0f));
+                    var w = (byte)Math.Max(-127.0f, Math.Min(val.W * 127.0f, 127.0f));
+                    var u = x | (y << 8) | (z << 16) | (w << 24);
                     var b = BitConverter.GetBytes(u);
                     Buffer.BlockCopy(b, 0, VertexBytes, o, 4);
                 }
@@ -3973,7 +3965,7 @@ namespace CodeWalker.GameFiles
                     case VertexComponentType.Float2: return FloatUtil.GetVector2String(GetVector2(v, c), d);
                     case VertexComponentType.Float3: return FloatUtil.GetVector3String(GetVector3(v, c), d);
                     case VertexComponentType.Float4: return FloatUtil.GetVector4String(GetVector4(v, c), d);
-                    case VertexComponentType.Dec3N: return FloatUtil.GetVector4String(GetDec3N(v, c), d);
+                    case VertexComponentType.RGBA8SNorm: return FloatUtil.GetVector4String(GetRGBA8SNorm(v, c), d);
                     case VertexComponentType.Half2: return FloatUtil.GetHalf2String(GetHalf2(v, c), d);
                     case VertexComponentType.Half4: return FloatUtil.GetHalf4String(GetHalf4(v, c), d);
                     case VertexComponentType.Colour: return FloatUtil.GetColourString(GetColour(v, c), d);
@@ -4054,29 +4046,22 @@ namespace CodeWalker.GameFiles
             }
             return Vector4.Zero;
         }
-        public Vector4 GetDec3N(int v, int c)
+        public Vector4 GetRGBA8SNorm(int v, int c)
         {
-            //see https://docs.microsoft.com/en-us/previous-versions/windows/desktop/bb322868(v%3Dvs.85)
+            // Equivalent to DXGI_FORMAT_R8G8B8A8_SNORM
             if ((Info != null) && (VertexBytes != null))
             {
                 var s = Info.Stride;
                 var co = Info.GetComponentOffset(c);
                 var o = (v * s) + co;
-                var e = o + 4;//sizeof(Dec3N)
+                var e = o + 4;//sizeof(RGBA8SNorm)
                 if (e <= VertexBytes.Length)
                 {
-                    var u = BitConverter.ToUInt32(VertexBytes, o);
-                    var ux = (u >> 0) & 0x3FF;
-                    var uy = (u >> 10) & 0x3FF;
-                    var uz = (u >> 20) & 0x3FF;
-                    var uw = (u >> 30) & 0x3;
-                    var sx = (ux & 0x200) > 0;
-                    var sy = (uy & 0x200) > 0;
-                    var sz = (uz & 0x200) > 0;
-                    var x = ((sx ? ux : ~ux) & 0x1FF) / (sx ? 511.0f : -511.0f);
-                    var y = ((sy ? uy : ~uy) & 0x1FF) / (sy ? 511.0f : -511.0f);
-                    var z = ((sz ? uz : ~uz) & 0x1FF) / (sz ? 511.0f : -511.0f);
-                    var w = (uw == 3) ? -1.0f : uw;//(0,1,2)=>(0,1,2); (3)=>(-1)
+                    var xyzw = BitConverter.ToUInt32(VertexBytes, o);
+                    var x = (sbyte)(xyzw & 0xFF) / 127.0f;
+                    var y = (sbyte)((xyzw >> 8) & 0xFF) / 127.0f;
+                    var z = (sbyte)((xyzw >> 16) & 0xFF) / 127.0f;
+                    var w = (sbyte)((xyzw >> 24) & 0xFF) / 127.0f;
                     return new Vector4(x, y, z, w);
                 }
             }
diff --git a/CodeWalker.Core/GameFiles/Resources/VertexType.cs b/CodeWalker.Core/GameFiles/Resources/VertexType.cs
index 1b922be..644b0c9 100644
--- a/CodeWalker.Core/GameFiles/Resources/VertexType.cs
+++ b/CodeWalker.Core/GameFiles/Resources/VertexType.cs
@@ -19,7 +19,7 @@ namespace CodeWalker.GameFiles
         Float4 = 7,
         UByte4 = 8,
         Colour = 9,
-        Dec3N = 10,
+        RGBA8SNorm = 10,
         Unk1 = 11,
         Unk2 = 12,
         Unk3 = 13,
@@ -43,7 +43,7 @@ namespace CodeWalker.GameFiles
                 case VertexComponentType.Float4: return 16;
                 case VertexComponentType.UByte4: return 4;
                 case VertexComponentType.Colour: return 4;
-                case VertexComponentType.Dec3N: return 4;
+                case VertexComponentType.RGBA8SNorm: return 4;
                 default: return 0;
             }
         }
@@ -62,7 +62,7 @@ namespace CodeWalker.GameFiles
                 case VertexComponentType.Float4: return 4;
                 case VertexComponentType.UByte4: return 4;
                 case VertexComponentType.Colour: return 4;
-                case VertexComponentType.Dec3N: return 4;
+                case VertexComponentType.RGBA8SNorm: return 4;
                 default: return 0;
             }
         }
diff --git a/CodeWalker/Rendering/VertexTypes.cs b/CodeWalker/Rendering/VertexTypes.cs
index 8460107..1932136 100644
--- a/CodeWalker/Rendering/VertexTypes.cs
+++ b/CodeWalker/Rendering/VertexTypes.cs
@@ -46,7 +46,7 @@ namespace CodeWalker.Rendering
                 case VertexComponentType.Float4: return Format.R32G32B32A32_Float;
                 case VertexComponentType.UByte4: return Format.R8G8B8A8_UInt;
                 case VertexComponentType.Colour: return Format.R8G8B8A8_UNorm;
-                case VertexComponentType.Dec3N: return Format.R10G10B10A2_UNorm;
+                case VertexComponentType.RGBA8SNorm: return Format.R8G8B8A8_SNorm;
                 default: return Format.Unknown;
             }
         }