diff --git a/.vs/shader3/v14/.suo b/.vs/shader3/v14/.suo
index 166c1eb..d57249a 100644
Binary files a/.vs/shader3/v14/.suo and b/.vs/shader3/v14/.suo differ
diff --git a/main.cpp b/main.cpp
index de97841..8f7514b 100644
--- a/main.cpp
+++ b/main.cpp
@@ -75,42 +75,38 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
 	//combine program
 	GPUProgram combineProgram1;
 	combineProgram1.AttachShader(GL_VERTEX_SHADER, "res/shader/fullscreenquad.vs");
-	combineProgram1.AttachShader(GL_FRAGMENT_SHADER, "res/shader/zpdd.fs");
+	combineProgram1.AttachShader(GL_FRAGMENT_SHADER, "res/shader/fullscreenquad.fs");
 	combineProgram1.Link();
 	combineProgram1.DetectAttribute("pos");
 	combineProgram1.DetectAttribute("texcoord");
-	combineProgram1.DetectUniform("U_BaseTexture");
-	combineProgram1.DetectUniform("U_BlendTexture");
+	combineProgram1.DetectUniform("U_MainTexture");
 
 	//combine program
 	GPUProgram combineProgram2;
 	combineProgram2.AttachShader(GL_VERTEX_SHADER, "res/shader/fullscreenquad.vs");
-	combineProgram2.AttachShader(GL_FRAGMENT_SHADER, "res/shader/zpdd_inverse.fs");
+	combineProgram2.AttachShader(GL_FRAGMENT_SHADER, "res/shader/smooth.fs");
 	combineProgram2.Link();
 	combineProgram2.DetectAttribute("pos");
 	combineProgram2.DetectAttribute("texcoord");
-	combineProgram2.DetectUniform("U_BaseTexture");
-	combineProgram2.DetectUniform("U_BlendTexture");
+	combineProgram2.DetectUniform("U_MainTexture");
 
 	//combine program
 	GPUProgram combineProgram3;
 	combineProgram3.AttachShader(GL_VERTEX_SHADER, "res/shader/fullscreenquad.vs");
-	combineProgram3.AttachShader(GL_FRAGMENT_SHADER, "res/shader/zpdd_dark.fs");
+	combineProgram3.AttachShader(GL_FRAGMENT_SHADER, "res/shader/sharpen.fs");
 	combineProgram3.Link();
 	combineProgram3.DetectAttribute("pos");
 	combineProgram3.DetectAttribute("texcoord");
-	combineProgram3.DetectUniform("U_BaseTexture");
-	combineProgram3.DetectUniform("U_BlendTexture");
+	combineProgram3.DetectUniform("U_MainTexture");
 
 	//combine program
 	GPUProgram combineProgram4;
 	combineProgram4.AttachShader(GL_VERTEX_SHADER, "res/shader/fullscreenquad.vs");
-	combineProgram4.AttachShader(GL_FRAGMENT_SHADER, "res/shader/zpdd_light.fs");
+	combineProgram4.AttachShader(GL_FRAGMENT_SHADER, "res/shader/edge_detect.fs");
 	combineProgram4.Link();
 	combineProgram4.DetectAttribute("pos");
 	combineProgram4.DetectAttribute("texcoord");
-	combineProgram4.DetectUniform("U_BaseTexture");
-	combineProgram4.DetectUniform("U_BlendTexture");
+	combineProgram4.DetectUniform("U_MainTexture");
 
 
 	
@@ -169,37 +165,25 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
 		glUseProgram(combineProgram1.mProgram);
 		glActiveTexture(GL_TEXTURE0);
 		glBindTexture(GL_TEXTURE_2D, head);
-		glUniform1i(combineProgram1.GetLocation("U_BaseTexture"), 0);
-		glActiveTexture(GL_TEXTURE1);
-		glBindTexture(GL_TEXTURE_2D, grass);
-		glUniform1i(combineProgram1.GetLocation("U_BlendTexture"), 1);
+		glUniform1i(combineProgram1.GetLocation("U_MainTexture"), 0);
 		fsq.DrawToLeftTop(combineProgram1.GetLocation("pos"), combineProgram1.GetLocation("texcoord"));
 
 		glUseProgram(combineProgram2.mProgram);
 		glActiveTexture(GL_TEXTURE0);
 		glBindTexture(GL_TEXTURE_2D, head);
-		glUniform1i(combineProgram2.GetLocation("U_BaseTexture"), 0);
-		glActiveTexture(GL_TEXTURE1);
-		glBindTexture(GL_TEXTURE_2D, grass);
-		glUniform1i(combineProgram2.GetLocation("U_BlendTexture"), 1);
+		glUniform1i(combineProgram2.GetLocation("U_MainTexture"), 0);
 		fsq.DrawToRightTop(combineProgram2.GetLocation("pos"), combineProgram2.GetLocation("texcoord"));
 
 		glUseProgram(combineProgram3.mProgram);
 		glActiveTexture(GL_TEXTURE0);
 		glBindTexture(GL_TEXTURE_2D, head);
-		glUniform1i(combineProgram3.GetLocation("U_BaseTexture"), 0);
-		glActiveTexture(GL_TEXTURE1);
-		glBindTexture(GL_TEXTURE_2D, grass);
-		glUniform1i(combineProgram3.GetLocation("U_BlendTexture"), 1);
+		glUniform1i(combineProgram3.GetLocation("U_MainTexture"), 0);
 		fsq.DrawToLeftBottom(combineProgram3.GetLocation("pos"), combineProgram3.GetLocation("texcoord"));
 
 		glUseProgram(combineProgram4.mProgram);
 		glActiveTexture(GL_TEXTURE0);
 		glBindTexture(GL_TEXTURE_2D, head);
-		glUniform1i(combineProgram4.GetLocation("U_BaseTexture"), 0);
-		glActiveTexture(GL_TEXTURE1);
-		glBindTexture(GL_TEXTURE_2D, grass);
-		glUniform1i(combineProgram4.GetLocation("U_BlendTexture"), 1);
+		glUniform1i(combineProgram4.GetLocation("U_MainTexture"), 0);
 		fsq.DrawToRightBottom(combineProgram4.GetLocation("pos"), combineProgram4.GetLocation("texcoord"));
 
 		glDisable(GL_BLEND);
diff --git a/res/shader/edge_detect.fs b/res/shader/edge_detect.fs
new file mode 100644
index 0000000..74281e3
--- /dev/null
+++ b/res/shader/edge_detect.fs
@@ -0,0 +1,28 @@
+
+varying vec2 V_Texcoord;
+
+uniform sampler2D U_MainTexture;
+
+void main()
+{
+	//1 2 1
+	//2 4 2
+	//1 2 1
+	vec4 color = vec4(0.0);
+	int coreSize = 3;
+	float texelOffset = 1/150.0;
+	float kernel[9];
+
+	kernel[6]=0;kernel[7]=1;kernel[8]=0;
+	kernel[3]=1;kernel[4]=-4;kernel[5]=1;
+	kernel[0]=0;kernel[1]=1;kernel[2]=0;
+
+	int index = 0;
+	for(int y=0; y<coreSize; y++){
+		for(int x=0; x<coreSize; x++){
+			vec4 currentColor = texture2D(U_MainTexture, V_Texcoord+vec2((-1+x)*texelOffset, (-1+y)*texelOffset));
+			color += currentColor*kernel[index++];
+		}
+	}
+	gl_FragColor=4.0*color+texture2D(U_MainTexture,V_Texcoord);
+}
\ No newline at end of file
diff --git a/res/shader/sharpen.fs b/res/shader/sharpen.fs
new file mode 100644
index 0000000..cd5189f
--- /dev/null
+++ b/res/shader/sharpen.fs
@@ -0,0 +1,29 @@
+
+varying vec2 V_Texcoord;
+
+uniform sampler2D U_MainTexture;
+
+void main()
+{
+	//1 2 1
+	//2 4 2
+	//1 2 1
+	vec4 color = vec4(0.0);
+	int coreSize = 3;
+	float texelOffset = 1/100.0;
+	float kernel[9];
+
+	kernel[6]=0;kernel[7]=-1;kernel[8]=0;
+	kernel[3]=-1;kernel[4]=4;kernel[5]=-1;
+	kernel[0]=0;kernel[1]=-1;kernel[2]=0;
+
+	int index = 0;
+	for(int y=0; y<coreSize; y++){
+		for(int x=0; x<coreSize; x++){
+			vec4 currentColor = texture2D(U_MainTexture, V_Texcoord+vec2((-1+x)*texelOffset, (-1+y)*texelOffset));
+			color += currentColor*kernel[index++];
+		}
+	}
+
+	gl_FragColor = 1.2*color+texture2D(U_MainTexture,V_Texcoord);
+}
\ No newline at end of file
diff --git a/res/shader/smooth.fs b/res/shader/smooth.fs
new file mode 100644
index 0000000..2d7bcb2
--- /dev/null
+++ b/res/shader/smooth.fs
@@ -0,0 +1,28 @@
+
+varying vec2 V_Texcoord;
+
+uniform sampler2D U_MainTexture;
+
+void main()
+{
+
+	vec4 color = vec4(0.0);
+	int coreSize = 3;
+	float texelOffset = 1/150.0;
+	float kernel[9];
+
+	kernel[6]=1;kernel[7]=2;kernel[8]=1;
+	kernel[3]=1;kernel[4]=4;kernel[5]=1;
+	kernel[0]=1;kernel[1]=2;kernel[2]=1;
+
+	int index = 0;
+	for(int y=0; y<coreSize; y++){
+		for(int x=0; x<coreSize; x++){
+			vec4 currentColor = texture2D(U_MainTexture, V_Texcoord+vec2((-1+x)*texelOffset, (-1+y)*texelOffset));
+			color += currentColor*kernel[index++];
+		}
+	}
+
+	color/=9;
+	gl_FragColor = color;
+}
\ No newline at end of file
diff --git a/shader3.vcxproj b/shader3.vcxproj
index d470d2d..35a0cb7 100644
--- a/shader3.vcxproj
+++ b/shader3.vcxproj
@@ -82,10 +82,10 @@
     <ClInclude Include="utils.h" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="res\shader\zpdd.fs" />
-    <None Include="res\shader\zpdd_dark.fs" />
-    <None Include="res\shader\zpdd_inverse.fs" />
-    <None Include="res\shader\zpdd_light.fs" />
+    <None Include="res\shader\edge_detect.fs" />
+    <None Include="res\shader\fullscreenquad.fs" />
+    <None Include="res\shader\sharpen.fs" />
+    <None Include="res\shader\smooth.fs" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
diff --git a/shader3.vcxproj.filters b/shader3.vcxproj.filters
index e28ec95..a041bdb 100644
--- a/shader3.vcxproj.filters
+++ b/shader3.vcxproj.filters
@@ -46,16 +46,16 @@
     </ClInclude>
   </ItemGroup>
   <ItemGroup>
-    <None Include="res\shader\zpdd.fs">
+    <None Include="res\shader\edge_detect.fs">
       <Filter>src</Filter>
     </None>
-    <None Include="res\shader\zpdd_dark.fs">
+    <None Include="res\shader\sharpen.fs">
       <Filter>src</Filter>
     </None>
-    <None Include="res\shader\zpdd_inverse.fs">
+    <None Include="res\shader\smooth.fs">
       <Filter>src</Filter>
     </None>
-    <None Include="res\shader\zpdd_light.fs">
+    <None Include="res\shader\fullscreenquad.fs">
       <Filter>src</Filter>
     </None>
   </ItemGroup>