diff --git a/Scripts/SoftMaskable.cs b/Scripts/SoftMaskable.cs
index 0b6bb29..4c8034f 100644
--- a/Scripts/SoftMaskable.cs
+++ b/Scripts/SoftMaskable.cs
@@ -175,9 +175,8 @@ namespace Coffee.UIExtensions
 		static int s_SoftMaskTexId;
 		static int s_StencilCompId;
 		static int s_MaskInteractionId;
-		static int s_SceneVId;
-		static int s_ScenePId;
 		static int s_GameVPId;
+		static int s_GameTVPId;
 		static List<SoftMaskable> s_ActiveSoftMaskables;
 		static int[] s_Interactions = new int[4];
 		static Material s_DefaultMaterial;
@@ -207,21 +206,20 @@ namespace Coffee.UIExtensions
 				}
 
 				Material mat = sm._maskMaterial;
-				mat.SetMatrix(s_SceneVId, w2c);
-				mat.SetMatrix(s_ScenePId, prj);
-
 				var c = sm.graphic.canvas.rootCanvas;
 				if (c.renderMode != RenderMode.ScreenSpaceOverlay && c.worldCamera)
 				{
 					var wcam = c.worldCamera;
-					var pv = wcam.projectionMatrix * wcam.worldToCameraMatrix;
+					var pv = GL.GetGPUProjectionMatrix (wcam.projectionMatrix, false) * wcam.worldToCameraMatrix;
 					mat.SetMatrix(s_GameVPId, pv);
+					mat.SetMatrix(s_GameTVPId, pv);
 				}
 				else
 				{
 					var pos = c.transform.localPosition;
-					var pv = Matrix4x4.TRS(new Vector3(0, 0, 0), Quaternion.identity, new Vector3(1 / pos.x, 1 / pos.y, -2 / 1000f)) * Matrix4x4.Translate(-pos);
+					var pv = Matrix4x4.TRS(new Vector3(0, 0, 0), Quaternion.identity, new Vector3(1 / pos.x, 1 / pos.y, -2 / 2000f));
 					mat.SetMatrix(s_GameVPId, pv);
+					mat.SetMatrix(s_GameTVPId, pv * Matrix4x4.Translate(-pos));
 				}
 			}
 		}
@@ -250,9 +248,8 @@ namespace Coffee.UIExtensions
 
 				#if UNITY_EDITOR
 				UnityEditor.EditorApplication.update += UpdateSceneViewMatrixForShader;
-				s_SceneVId = Shader.PropertyToID("_SceneV");
-				s_ScenePId = Shader.PropertyToID("_SceneP");
 				s_GameVPId = Shader.PropertyToID("_GameVP");
+				s_GameTVPId = Shader.PropertyToID("_GameTVP");
 				#endif
 
 				s_SoftMaskTexId = Shader.PropertyToID("_SoftMaskTex");
diff --git a/SoftMask.cginc b/SoftMask.cginc
index a28096b..5e98c61 100644
--- a/SoftMask.cginc
+++ b/SoftMask.cginc
@@ -3,9 +3,8 @@
 
 sampler2D _SoftMaskTex;
 float _Stencil;
-float4x4 _SceneV;
-float4x4 _SceneP;
 float4x4 _GameVP;
+float4x4 _GameTVP;
 half4 _MaskInteraction;
 
 fixed Approximately(float4x4 a, float4x4 b)
@@ -16,7 +15,7 @@ fixed Approximately(float4x4 a, float4x4 b)
 		max(d._m10,max(d._m11,max(d._m12,max(d._m13,
 		max(d._m20,max(d._m21,max(d._m22,max(d._m23,
 		max(d._m30,max(d._m31,max(d._m32,d._m33))))))))))))))),
-		1);
+		0.01);
 }
 
 float GetMaskAlpha(float alpha, int stencilId, float interaction)
@@ -34,8 +33,8 @@ float SoftMaskInternal(float4 clipPos)
 {
 	half2 view = clipPos.xy/_ScreenParams.xy;
 	#if SOFTMASK_EDITOR
-		fixed isSceneView = max(Approximately(UNITY_MATRIX_V, _SceneV), Approximately(UNITY_MATRIX_P, _SceneP));
-		float4 cpos = mul(_GameVP, mul(UNITY_MATRIX_M, wpos));
+		fixed isSceneView = 1 - Approximately(UNITY_MATRIX_VP, _GameVP);
+		float4 cpos = mul(_GameTVP, mul(UNITY_MATRIX_M, wpos));
 		view = lerp(view, cpos.xy / cpos.w * 0.5 + 0.5, isSceneView);
 	#endif