diff --git a/deps/getDeps.sh b/deps/getDeps.sh
index e70bb7f..43ec790 100755
--- a/deps/getDeps.sh
+++ b/deps/getDeps.sh
@@ -26,8 +26,27 @@ then
 		wget http://de.archive.ubuntu.com/ubuntu/pool/universe/libs/libsdl2/libsdl2-dbg_2.0.1+dfsg1-1ubuntu1_amd64.deb
 		sudo gdebi libsdl2-dbg_2.0.1+dfsg1-1ubuntu1_amd64.deb
 	fi
+	if [ ! -f "libsdl2-ttf-2.0-0_2.0.12+dfsg1-2_amd64.deb" ]
+	then
+		wget http://de.archive.ubuntu.com/ubuntu/pool/universe/libs/libsdl2-ttf/libsdl2-ttf-2.0-0_2.0.12+dfsg1-2_amd64.deb
+		sudo gdebi libsdl2-ttf-2.0-0_2.0.12+dfsg1-2_amd64.deb
+	fi
+	if [ ! -f "libsdl2-ttf-dev_2.0.12+dfsg1-2_amd64.deb" ]
+	then
+		wget http://de.archive.ubuntu.com/ubuntu/pool/universe/libs/libsdl2-ttf/libsdl2-ttf-dev_2.0.12+dfsg1-2_amd64.deb
+		sudo gdebi libsdl2-ttf-dev_2.0.12+dfsg1-2_amd64.deb
+	fi
+	if [ ! -f "libsdl2-image-2.0-0_2.0.0+dfsg-3_amd64.deb" ]
+	then
+		wget http://de.archive.ubuntu.com/ubuntu/pool/universe/libs/libsdl2-image/libsdl2-image-2.0-0_2.0.0+dfsg-3_amd64.deb
+		sudo gdebi libsdl2-image-2.0-0_2.0.0+dfsg-3_amd64.deb
+	fi
+	if [ ! -f "libsdl2-image-dev_2.0.0+dfsg-3_amd64.deb" ]
+	then
+		wget http://de.archive.ubuntu.com/ubuntu/pool/universe/libs/libsdl2-image/libsdl2-image-dev_2.0.0+dfsg-3_amd64.deb
+		sudo gdebi libsdl2-image-dev_2.0.0+dfsg-3_amd64.deb
+	fi
 fi
-
 ## hack end
 
 echo "cloning repositories"
@@ -41,6 +60,9 @@ else
 fi
 
 echo "trying to build"
+
+cabal install haddock
+
 for d in `find . -maxdepth 1 -type d`
 do
 	if [ "$d" == "." ]
diff --git a/shaders/fragment.shader b/shaders/fragment.shader
index 7ae05d4..5bc334c 100644
--- a/shaders/fragment.shader
+++ b/shaders/fragment.shader
@@ -1,12 +1,23 @@
-#version 330
+#version 400
 
-//color from earlier stages
-smooth in vec4 fg_SmoothColor;
+smooth in vec3 teNormal;
+in vec4 teColor;
 
-out vec4 fg_FragColor;
+out vec4 fgColor;
+
+uniform mat4 ViewMatrix;
 
 void main(void)
 {
-//copy-shader
-   fg_FragColor = fg_SmoothColor;
+    //heliospheric lighting
+    vec4 light = vec4(1.0,1.0,1.0,1.0);
+    vec4 dark  = vec4(0.0,0.0,0.0,1.0);
+    //direction to sun from origin
+    vec3 lightDir = normalize(ViewMatrix * vec4(5.0,5.0,1.0,0.0)).xyz;
+
+    float costheta = dot(teNormal, lightDir);
+    float a = costheta * 0.5 + 0.5;
+
+
+    fgColor = teColor * mix(dark, light, a);
 }
\ No newline at end of file
diff --git a/shaders/vertex.shader b/shaders/vertex.shader
index 324aa46..70b8530 100644
--- a/shaders/vertex.shader
+++ b/shaders/vertex.shader
@@ -1,32 +1,18 @@
-#version 330
-
-//constant projection matrix
-uniform mat4 fg_ProjectionMatrix;
-uniform mat4 fg_ViewMatrix;
-uniform mat3 fg_NormalMatrix;
+#version 400
 
 //vertex-data
-in vec4 fg_Color;
-in vec3 fg_VertexIn;
-in vec3 fg_NormalIn;
+in vec4 Color;
+in vec3 Position;
+in vec3 Normal;
 
 //output-data for later stages
-smooth out vec4 fg_SmoothColor;
+out vec4 vColor;
+out vec3 vPosition;
+out vec3 vNormal;
 
 void main()
 {
-   vec3 fg_Normal = fg_NormalMatrix * fg_NormalIn; //vec3(0,1,0);
-   //transform vec3 into vec4, setting w to 1
-   vec4 fg_Vertex = vec4(fg_VertexIn, 1.0);
-   vec4 light = vec4(1.0,1.0,1.0,1.0);
-   vec4 dark  = vec4(0.0,0.0,0.0,1.0);
-   //direction to sun from origin
-   vec3 lightDir = normalize(fg_ViewMatrix * vec4(5.0,5.0,1.0,0.0)).xyz;
-
-
-   float costheta = dot(normalize(fg_Normal), lightDir);
-   float a = costheta * 0.5 + 0.5;
-
-   fg_SmoothColor = fg_Color * mix(dark, light, a);// + 0.001* fg_Normal.xyzx;
-   gl_Position = fg_ProjectionMatrix * fg_ViewMatrix * fg_Vertex;
+    vPosition = Position;
+    vNormal = Normal;
+    vColor = Color;
 }
\ No newline at end of file
diff --git a/src/Main.hs b/src/Main.hs
index 47222b3..94c85c2 100644
--- a/src/Main.hs
+++ b/src/Main.hs
@@ -35,6 +35,7 @@ import qualified Graphics.Rendering.OpenGL.GL         as GL
 import           Graphics.Rendering.OpenGL.Raw.Core31
 import           Data.Time                            (getCurrentTime, UTCTime, diffUTCTime)
 
+import Graphics.Rendering.OpenGL.Raw.ARB.TessellationShader
 -- Our modules
 import           Map.Map
 import           Render.Misc                          (checkError,
@@ -122,8 +123,8 @@ main = do
         now <- getCurrentTime
         putStrLn "foo"
 
-        let zDistClosest  = 10
-            zDistFarthest = zDistClosest + 20
+        let zDistClosest  = 1
+            zDistFarthest = zDistClosest + 30
             fov           = 90  --field of view
             near          = 1   --near plane
             far           = 100 --far plane
@@ -231,8 +232,11 @@ draw = do
         GL.vertexAttribPointer vi GL.$= fgVertexIndex
         GL.vertexAttribArray vi   GL.$= GL.Enabled
         checkError "beforeDraw"
+        
+        glPatchParameteri gl_PATCH_VERTICES 3
+        glPolygonMode gl_FRONT gl_LINE
 
-        GL.drawArrays GL.Triangles 0 numVert
+        glDrawArrays gl_PATCHES 0 (fromIntegral numVert)
         checkError "draw"
 
 
diff --git a/src/Render/Render.hs b/src/Render/Render.hs
index c7e9d5b..362714d 100644
--- a/src/Render/Render.hs
+++ b/src/Render/Render.hs
@@ -18,6 +18,10 @@ import           Render.Misc
 
 vertexShaderFile :: String
 vertexShaderFile = "shaders/vertex.shader"
+tessControlShaderFile :: String
+tessControlShaderFile = "shaders/tessControl.shader"
+tessEvalShaderFile :: String
+tessEvalShaderFile = "shaders/tessEval.shader"
 fragmentShaderFile :: String
 fragmentShaderFile = "shaders/fragment.shader"
 
@@ -45,37 +49,43 @@ initShader :: IO (
                       )
 initShader = do
    ! vertexSource <- B.readFile vertexShaderFile
+   ! tessControlSource <- B.readFile tessControlShaderFile
+   ! tessEvalSource <- B.readFile tessEvalShaderFile
    ! fragmentSource <- B.readFile fragmentShaderFile
    vertexShader <- compileShaderSource VertexShader vertexSource
    checkError "compile Vertex"
+   tessControlShader <- compileShaderSource TessControlShader tessControlSource
+   checkError "compile Vertex"
+   tessEvalShader <- compileShaderSource TessEvaluationShader tessEvalSource
+   checkError "compile Vertex"
    fragmentShader <- compileShaderSource FragmentShader fragmentSource
    checkError "compile Frag"
-   program <- createProgramUsing [vertexShader, fragmentShader]
+   program <- createProgramUsing [vertexShader, tessControlShader, tessEvalShader, fragmentShader]
    checkError "compile Program"
 
    currentProgram $= Just program
 
-   projectionMatrixIndex <- get (uniformLocation program "fg_ProjectionMatrix")
+   projectionMatrixIndex <- get (uniformLocation program "ProjectionMatrix")
    checkError "projMat"
 
-   viewMatrixIndex <- get (uniformLocation program "fg_ViewMatrix")
+   viewMatrixIndex <- get (uniformLocation program "ViewMatrix")
    checkError "viewMat"
 
-   modelMatrixIndex <- get (uniformLocation program "fg_ModelMatrix")
+   modelMatrixIndex <- get (uniformLocation program "ModelMatrix")
    checkError "modelMat"
 
-   normalMatrixIndex <- get (uniformLocation program "fg_NormalMatrix")
+   normalMatrixIndex <- get (uniformLocation program "NormalMatrix")
    checkError "normalMat"
 
-   vertexIndex <- get (attribLocation program "fg_VertexIn")
+   vertexIndex <- get (attribLocation program "Position")
    vertexAttribArray vertexIndex $= Enabled
    checkError "vertexInd"
 
-   normalIndex <- get (attribLocation program "fg_NormalIn")
+   normalIndex <- get (attribLocation program "Normal")
    vertexAttribArray normalIndex $= Enabled
    checkError "normalInd"
 
-   colorIndex <- get (attribLocation program "fg_Color")
+   colorIndex <- get (attribLocation program "Color")
    vertexAttribArray colorIndex $= Enabled
    checkError "colorInd"