diff --git a/main.tscn b/main.tscn
index 163dd3a..d173f11 100644
--- a/main.tscn
+++ b/main.tscn
@@ -1,3 +1,24 @@
-[gd_scene format=3 uid="uid://b8f5t76nfdu5h"]
+[gd_scene load_steps=5 format=3 uid="uid://b8f5t76nfdu5h"]
+
+[ext_resource type="Texture2D" uid="uid://bxyy3bwt7a5l2" path="res://sprites/circle.svg" id="1_70edj"]
+[ext_resource type="Shader" path="res://shaders/postprocess.gdshader" id="1_gpsy1"]
+[ext_resource type="Texture2D" uid="uid://dvr4j6164rphg" path="res://sprites/square.svg" id="2_xiv3x"]
+
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_rnibu"]
+shader = ExtResource("1_gpsy1")
+shader_parameter/radius = 16
 
 [node name="Main" type="Node"]
+
+[node name="Circle" type="Sprite2D" parent="."]
+modulate = Color(1, 1, 1, 0.498039)
+texture_filter = 2
+position = Vector2(68, 44)
+texture = ExtResource("1_70edj")
+
+[node name="Square" type="Sprite2D" parent="."]
+material = SubResource("ShaderMaterial_rnibu")
+scale = Vector2(72, 40)
+texture = ExtResource("2_xiv3x")
+centered = false
+metadata/_edit_lock_ = true
diff --git a/shaders/postprocess.gdshader b/shaders/postprocess.gdshader
new file mode 100644
index 0000000..231b2fe
--- /dev/null
+++ b/shaders/postprocess.gdshader
@@ -0,0 +1,14 @@
+shader_type canvas_item;
+
+uniform sampler2D screen: hint_screen_texture, repeat_disable, filter_nearest;
+uniform int radius = 16;
+
+void fragment() {
+	float u = SCREEN_UV.x;
+	float v = SCREEN_UV.y;
+	
+    COLOR.rgb = texture(screen, vec2(u, v)).rgb;
+	
+	// This is affected by editor zoom!
+	COLOR.r += texture(screen, vec2(u + (SCREEN_PIXEL_SIZE.x * 4.0), v + (SCREEN_PIXEL_SIZE.y * 4.0))).r;
+}