diff --git a/Assets/WaveformProvider/Sample/Material/Reflect.mat b/Assets/WaveformProvider/Sample/Material/Reflect.mat
index e3904e3..0205195 100644
--- a/Assets/WaveformProvider/Sample/Material/Reflect.mat
+++ b/Assets/WaveformProvider/Sample/Material/Reflect.mat
@@ -67,7 +67,7 @@ Material:
         m_Scale: {x: 1, y: 1}
         m_Offset: {x: 0, y: 0}
     m_Floats:
-    - _BumpAmt: 5
+    - _BumpAmt: 1000
     - _BumpScale: 1
     - _Cutoff: 0.5
     - _DetailNormalMapScale: 1
diff --git a/Assets/WaveformProvider/Sample/Shader/GrabDistortion.shader b/Assets/WaveformProvider/Sample/Shader/GrabDistortion.shader
index fccdcf3..31e369b 100644
--- a/Assets/WaveformProvider/Sample/Shader/GrabDistortion.shader
+++ b/Assets/WaveformProvider/Sample/Shader/GrabDistortion.shader
@@ -38,6 +38,7 @@
 			};
 
 			sampler2D _BackgroundTexture;
+			float4 _BackgroundTexture_TexelSize;
 			float _NormalScale;
 			//wave texture definition.
 			WAVE_TEX_DEFINE(_WaveTex)
@@ -54,7 +55,7 @@
 			{
 				//compute wave normal.
 				float3 normal = WAVE_NORMAL(_WaveTex, i.uv);
-				float2 offset = normal.xy * _NormalScale - _NormalScale * 0.5;
+				float2 offset = normal.xy * _NormalScale - _BackgroundTexture_TexelSize.xy;
 				float4 bgcolor = tex2D(_BackgroundTexture, i.grabPos.xy / i.grabPos.w + offset);
 
 				return bgcolor;
diff --git a/Assets/WaveformProvider/Sample/Shader/WaterSurface.shader b/Assets/WaveformProvider/Sample/Shader/WaterSurface.shader
index c3e2cdb..220c781 100644
--- a/Assets/WaveformProvider/Sample/Shader/WaterSurface.shader
+++ b/Assets/WaveformProvider/Sample/Shader/WaterSurface.shader
@@ -6,7 +6,7 @@
 		_WaveInputTex("Wave Input Texture", 2D) = "black" {}
 		_RefTex("Ref",2D) = "black" {}
 		_BumpMap("Normalmap", 2D) = "bump" {}
-		_BumpAmt("BumpAmt", Range(0,100)) = 0
+		_BumpAmt("BumpAmt", Range(0,10000)) = 0
 
 		//this property is populated with the wave's RenderTexture.
 		_WaveTex("Wave",2D) = "gray" {}
@@ -66,7 +66,7 @@
 			//compute wave normal.
 			bump += WAVE_NORMAL_ADJ(_WaveTex, i.uv, _ParallaxScale, _NormalScaleFactor);
 
-			float2 offset = bump * _BumpAmt - _BumpAmt * 0.5;
+			float2 offset = bump * _BumpAmt * _RefTex_TexelSize.xy;
 			i.ref.xy = offset * i.ref.z + i.ref.xy;
 			float4 ref = tex2D(_RefTex, i.ref.xy / i.ref.w * 0.5 + 0.5);
 
diff --git a/Assets/WaveformProvider/Sample/Shader/WaveHeight.shader b/Assets/WaveformProvider/Sample/Shader/WaveHeight.shader
index bfe5e9d..4855ce9 100644
--- a/Assets/WaveformProvider/Sample/Shader/WaveHeight.shader
+++ b/Assets/WaveformProvider/Sample/Shader/WaveHeight.shader
@@ -44,7 +44,8 @@
 			float4 frag (v2f i) : SV_Target
 			{
 				//compute wave height.
-				return float4(1, 1, 1, 1) * WAVE_HEIGHT(_WaveTex, i.uv);
+				float height01 = WAVE_HEIGHT(_WaveTex, i.uv) * 0.5 + 0.5;
+				return float4(height01, height01, height01, 1);
 			}
 			ENDCG
 		}
diff --git a/Assets/WaveformProvider/Sample/Shader/WaveNormal.shader b/Assets/WaveformProvider/Sample/Shader/WaveNormal.shader
index 1c05617..13a253c 100644
--- a/Assets/WaveformProvider/Sample/Shader/WaveNormal.shader
+++ b/Assets/WaveformProvider/Sample/Shader/WaveNormal.shader
@@ -44,7 +44,8 @@
 			float4 frag (v2f i) : SV_Target
 			{
 				//compute wave normal.
-				return float4(WAVE_NORMAL(_WaveTex, i.uv), 1);
+				float3 normal01 = WAVE_NORMAL(_WaveTex, i.uv) * 0.5 + 0.5;
+				return float4(normal01, 1);
 			}
 			ENDCG
 		}
diff --git a/Assets/WaveformProvider/Sample/Texture/Wave.renderTexture b/Assets/WaveformProvider/Sample/Texture/Wave.renderTexture
index ef59a1d..e4bac11 100644
--- a/Assets/WaveformProvider/Sample/Texture/Wave.renderTexture
+++ b/Assets/WaveformProvider/Sample/Texture/Wave.renderTexture
@@ -12,7 +12,7 @@ RenderTexture:
   m_Width: 256
   m_Height: 256
   m_AntiAliasing: 1
-  m_DepthFormat: 2
+  m_DepthFormat: 0
   m_ColorFormat: 0
   m_MipMap: 0
   m_GenerateMips: 1
diff --git a/Assets/WaveformProvider/Shader/Lib/WaveUtil.cginc b/Assets/WaveformProvider/Shader/Lib/WaveUtil.cginc
index c053514..29a0308 100644
--- a/Assets/WaveformProvider/Shader/Lib/WaveUtil.cginc
+++ b/Assets/WaveformProvider/Shader/Lib/WaveUtil.cginc
@@ -31,7 +31,7 @@ float3 WaveNormal(sampler2D waveTex, float2 uv, float2 texelSize, float parallax
 	float3 texz = WAVE_HEIGHT(waveTex, uv.xy - shiftZ);
 	float3 du = { 1, 0, normalScale * (texX.x - texx.x) };
 	float3 dv = { 0, 1, normalScale * (texZ.x - texz.x) };
-	return normalize(cross(du, dv)) * 0.5 + 0.5;
+	return normalize(cross(du, dv));
 }
 
 #endif //WAVE_UTIL
\ No newline at end of file