diff --git a/spine-unity/Assets/spine-unity/Modules/SpriteAttacher.cs b/spine-unity/Assets/spine-unity/Modules/SpriteAttacher.cs
index 5f44696ca..ceb4d2601 100644
--- a/spine-unity/Assets/spine-unity/Modules/SpriteAttacher.cs
+++ b/spine-unity/Assets/spine-unity/Modules/SpriteAttacher.cs
@@ -169,8 +169,8 @@ namespace Spine.Unity.Modules {
 			attachment.SetColor(Color.white);
 			attachment.ScaleX = 1;
 			attachment.ScaleY = 1;
-			attachment.RegionOffsetX = sprite.rect.width * (0.5f - Mathf.InverseLerp(bounds.min.x, bounds.max.x, 0)) / sprite.pixelsPerUnit;
-			attachment.RegionOffsetY = sprite.rect.height * (0.5f - Mathf.InverseLerp(bounds.min.y, bounds.max.y, 0)) / sprite.pixelsPerUnit;
+			attachment.RegionOffsetX = sprite.rect.width * (0.5f - InverseLerp(bounds.min.x, bounds.max.x, 0)) / sprite.pixelsPerUnit;
+			attachment.RegionOffsetY = sprite.rect.height * (0.5f - InverseLerp(bounds.min.y, bounds.max.y, 0)) / sprite.pixelsPerUnit;
 			attachment.Width = size.x;
 			attachment.Height = size.y;
 			attachment.RegionWidth = size.x;
@@ -194,6 +194,11 @@ namespace Spine.Unity.Modules {
 		public BoundingBoxAttachment NewBoundingBoxAttachment (Skin skin, string name) {
 			throw new System.NotImplementedException();
 		}
+		
+		private float InverseLerp(float a, float b, float value)
+		{
+			return (value - a) / (b - a);
+		}
 	}
 
 	public static class SpriteAttachmentExtensions {
diff --git a/spine-unity/Assets/spine-unity/Shaders/Skeleton.shader b/spine-unity/Assets/spine-unity/Shaders/Skeleton.shader
index 890aea1e3..cda7d3d76 100644
--- a/spine-unity/Assets/spine-unity/Shaders/Skeleton.shader
+++ b/spine-unity/Assets/spine-unity/Shaders/Skeleton.shader
@@ -8,6 +8,7 @@ Shader "Spine/Skeleton" {
 		Tags { "Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent" }
 		LOD 100
 
+		Fog { Mode Off }
 		Cull Off
 		ZWrite Off
 		Blend One OneMinusSrcAlpha
@@ -24,8 +25,7 @@ Shader "Spine/Skeleton" {
 			Name "Caster"
 			Tags { "LightMode"="ShadowCaster" }
 			Offset 1, 1
-			
-			Fog { Mode Off }
+
 			ZWrite On
 			ZTest LEqual
 			Cull Off
@@ -79,4 +79,4 @@ Shader "Spine/Skeleton" {
 			}
 		}
 	}
-}
\ No newline at end of file
+}