diff --git a/BaseGLProject/MyGLWindow.cpp b/BaseGLProject/MyGLWindow.cpp
index f37adc9..f484958 100644
--- a/BaseGLProject/MyGLWindow.cpp
+++ b/BaseGLProject/MyGLWindow.cpp
@@ -180,11 +180,10 @@ void MyGlWindow::setup()
 	//meshes["Cube"]->assignTexture(_scnctx.textures["MossTex"]);
 	//meshes["Cube"]->addTranslation(glm::vec4(4, 3, -4, 0)); 
 	
-	//meshes.emplace("Mountain", new Mesh("mountain/mount.blend1.obj", shaders["TexBaseLight"]));	
-
-	meshes.emplace("Sponza", new Mesh("sponza/sponza.obj", shaders["TexBaseLight"]));
-	meshes["Sponza"]->addTranslation(glm::vec4(0, -200, 0, 1));	
+	meshes.emplace("Mountain", new Mesh("mountain/mount.blend1.obj", shaders["TexBaseLight"]));	
 
+	//meshes.emplace("Sponza", new Mesh("sponza/sponza.obj", shaders["TexBaseLight"]));
+	//meshes["Sponza"]->addTranslation(glm::vec4(0, -200, 0, 1));	
 
 
 	//moddata.checkeredFloor(20, 20, glm::vec3(0.1, 0.1, 0.1), glm::vec3(0.7, 0.7, 0.7));			
@@ -226,7 +225,7 @@ void MyGlWindow::draw()
 	_scnctx.viewMatrix = view;
 	_scnctx.projectionMatrix = projection;
 	
-	_multipassManager.enableFrameBufferTexture("depth_tex");
+	_multipassManager.enableFrameBufferTexture("render_tex");
 	glClearColor(_scnctx.bg.r, _scnctx.bg.g, _scnctx.bg.b, _scnctx.bg.a);
 	glViewport(0, 0, _scnctx.width, _scnctx.height);
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
@@ -236,7 +235,7 @@ void MyGlWindow::draw()
 	for (auto it = meshes.begin(); it != meshes.end(); it++)
 		(*it).second->draw(_scnctx);
 	
-	_multipassManager.shader.addUniform("depth", true);
+	_multipassManager.shader.addUniform("sobel", true);
 	_multipassManager.drawResultToScreen(_scnctx);
 	//skybox.draw(shaders["Skybox"], _scnctx);
 }
diff --git a/BaseGLProject/textureViewer.frag b/BaseGLProject/textureViewer.frag
index 4fc563a..2f7aa68 100644
--- a/BaseGLProject/textureViewer.frag
+++ b/BaseGLProject/textureViewer.frag
@@ -6,7 +6,31 @@ out vec4 final_color;
 
 uniform sampler2D tex;
 uniform bool depth;
+uniform bool blur;
+uniform bool sharpen;
+uniform bool sepia;
+uniform bool grayscale;
+uniform bool sobel;
 
+const float f = 1.0 / 300.0;
+
+vec2 offsets[9] = vec2[](
+		vec2(-f, f), vec2(0.0, f), vec2(f, f),
+		vec2(-f, 0.0), vec2(0.0, 0.0), vec2(f, 0.0),
+		vec2(-f, -f), vec2(0.0, -f), vec2(f, -f)
+);
+
+float blur_kernel[9] = float[](
+	1.0 / 16, 2.0 / 16, 1.0 / 16,
+	2.0 / 16, 4.0 / 16, 2.0 / 16,
+	1.0 / 16, 2.0 / 16, 1.0 / 16
+);
+
+float sharp_kernel[9] = float[](
+	-1, -1, -1,
+	-1, 9, -1,
+	-1, -1, -1
+);
 
 float LinearizeDepth(in vec2 uv)
 {
@@ -16,6 +40,50 @@ float LinearizeDepth(in vec2 uv)
     return (2.0 * zNear) / (zFar + zNear - depth * (zFar - zNear));
 }
 
+vec3 blurring_func(in vec2 uv)
+{	
+	vec3 texblur = vec3(0,0,0);
+	for (int i = 0; i < 9; i++)				
+		texblur += vec3(texture(tex, uv + offsets[i]).rgb * blur_kernel[i]);
+		
+	return texblur;
+}
+
+vec4 sharpening_func(in vec2 uv)
+{
+	vec4 texsharp = vec4(0,0,0,0);
+	for (uint i = 0; i < 9; i++)
+		texsharp += texture(tex, uv + offsets[i]).rgba * sharp_kernel[i];
+			
+	return texsharp;
+}
+
+vec3 sobel_filter(vec3 color)
+{
+	float sobel_x[9] = float[](
+		-1, 0, 1,
+		-2, 0, 2,
+		-1, 0, 1
+	);
+
+	float sobel_y[9] = float[](
+	-1, -2, -1,
+	 0,  0,  0,
+	 1,  2,  1
+	);
+
+	vec3 vec_x = vec3(0);
+	vec3 vec_y = vec3(0);
+
+	for (int i = 0; i < 9; i++)
+	{
+		vec_x += texture(tex, uv + offsets[i]).rgb * sobel_x[i];
+		vec_y += texture(tex, uv + offsets[i]).rgb * sobel_y[i];
+	}
+
+	return sqrt(vec_x * vec_x + vec_y * vec_y);
+}
+
 void main()
 {
 	//rrra because depth textures are not usual textures, they have only one channel
@@ -25,5 +93,30 @@ void main()
 	   float d;
 	   d = LinearizeDepth(uv);
 	   final_color = vec4(d,d,d,1.0);	   	   
-	}	
+	}
+	else if (blur)
+	{	  
+	  final_color = vec4(blurring_func(uv), 1);
+	}
+	else if (sharpen)
+	{
+	  final_color = vec4(sharpening_func(uv));
+	}
+	else if (sepia)
+	{
+	final_color = vec4(final_color.r * .393 + final_color.g * .769 + final_color.b * .189,
+					   final_color.r * .349 + final_color.g * .686 + final_color.b * .168,
+					   final_color.r * .272 + final_color.g * .534 + final_color.b * .131, 1.0);
+	}
+	else if (grayscale)
+	{
+		float average = final_color.r * 0.2126 + final_color.g * 0.7152 + final_color.b * 0.0722;
+		final_color = vec4(average, average, average, 1.0);
+	}
+	else if (sobel)
+	{		
+		vec3 sobeled = sobel_filter(final_color.rgb);	
+		float average = sobeled.r * 0.2126 + sobeled.g * 0.7152 + sobeled.b * 0.0722;
+		final_color = vec4(average, average, average, 1.0);
+	}
 }
\ No newline at end of file