diff --git a/openVulkanoCpp/Shader/background.frag b/openVulkanoCpp/Shader/background.frag
index c05c432..8e38811 100644
--- a/openVulkanoCpp/Shader/background.frag
+++ b/openVulkanoCpp/Shader/background.frag
@@ -22,8 +22,14 @@ layout(set = 1, binding = 0) uniform CameraData
 
 void main()
 {
+    vec2 rm = (texCoords - 0.5) * 2;
+    float intensity = rm.x * rm.x + rm.y * rm.y;
+    intensity = (intensity / 1.4) * scale / 2;
+
     fragColor = texture(camTexture, texCoords);
+    fragColor.rgb = fragColor.rgb - intensity;
+
     #ifdef ENABLE_DEPTH_WRITE
     gl_FragDepth = (texture(depthMap, texCoords).r - cam.near) / (cam.far - cam.near);
     #endif
-}
\ No newline at end of file
+}