diff --git a/zoneb/bin/data/shaders/bound.frag b/zoneb/bin/data/shaders/bound.frag
index d8dec0b..2e82b4e 100644
--- a/zoneb/bin/data/shaders/bound.frag
+++ b/zoneb/bin/data/shaders/bound.frag
@@ -14,7 +14,27 @@ uniform bool        u_init;
 
 varying vec2        v_texcoord;
 
+float depthToSilhouette(float depth) {
+  if(depth < 0.005) return 0;
+  if(depth > 0.1) return 0;
+  else return 1;
+}
+
 void main() {
+  vec2 pixel = 1./u_resolution;
+  vec2 offset[9];
+  offset[0] = pixel * vec2(-1.0,-1.0);
+  offset[1] = pixel * vec2( 0.0,-1.0);
+  offset[2] = pixel * vec2( 1.0,-1.0);
+
+  offset[3] = pixel * vec2(-1.0,0.0);
+  offset[4] = pixel * vec2( 0.0,0.0);
+  offset[5] = pixel * vec2( 1.0,0.0);
+
+  offset[6] = pixel * vec2(-1.0,1.0);
+  offset[7] = pixel * vec2( 0.0,1.0);
+  offset[8] = pixel * vec2( 1.0,1.0);
+
   vec2 st = v_texcoord;
   // st.y = 1.0 - st.y;
 
@@ -28,12 +48,9 @@ void main() {
   vec4 color = vec4(0,0,0,1);
   if(u_init) {
     float tmp = texture2D(u_depth, st).r;
-    if(tmp > 0.005) {
-      color.rgb = vec3(1);
-    }
+    color.rgb = vec3(depthToSilhouette(tmp));
   }
   else {
-    vec2 pixel = 1./u_resolution;
 
     float kernel[9];
     kernel[0] = 0.125;
@@ -46,28 +63,13 @@ void main() {
     kernel[7] = 0.25;
     kernel[8] = 0.125;
 
-    vec2 offset[9];
-    offset[0] = pixel * vec2(-1.0,-1.0);
-    offset[1] = pixel * vec2( 0.0,-1.0);
-    offset[2] = pixel * vec2( 1.0,-1.0);
-
-    offset[3] = pixel * vec2(-1.0,0.0);
-    offset[4] = pixel * vec2( 0.0,0.0);
-    offset[5] = pixel * vec2( 1.0,0.0);
-
-    offset[6] = pixel * vec2(-1.0,1.0);
-    offset[7] = pixel * vec2( 0.0,1.0);
-    offset[8] = pixel * vec2( 1.0,1.0);
-
     float lap = 0;
 
     for (int i=0; i < 9; i++){
       float tmp = texture2D(u_buffer1, st + offset[i]).r;
-      // lap += tmp * kernel[i] / 2.5;
-      if(tmp > 0.005) {
-        color.rgb = vec3(1);
-      }
+      lap += tmp * kernel[i] / 2.5;
     }
+    color = vec4(vec3(lap * 2.0), 1.0);
   }
 
   gl_FragColor = color;
@@ -81,14 +83,24 @@ void main() {
   gl_FragColor = texture2D(u_buffer0, st);
 #else
   // Main Buffer
+  float buf1 = texture2D(u_buffer1, st).r;
   vec3 dispColor = vec3(0, 0, 1);
-  dispColor.r = texture2D(u_depth, st).r > 0.005 ? 1 : 0;
-  dispColor.g = texture2D(u_buffer1, st).r;
+  dispColor.rgb = vec3(depthToSilhouette(texture2D(u_depth, st).r));
+ 
+  float maxVal = buf1;
+  float minVal = buf1;
+  for (int i=0; i < 9; i++){
+    float tmp = texture2D(u_buffer1, st + offset[i]).r;
+    maxVal = max(maxVal, tmp);
+    minVal = min(minVal, tmp);
+  }
+
+  if(maxVal - minVal > 0.1) {
+    dispColor.rgb = vec3(1);
+  }
+
   // color.r = 1.;
   gl_FragColor = vec4(dispColor, 1.0);
-
-
-  // gl_FragColor = color;
 #endif
 
 }
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