diff --git a/examples/shaders/resources/shaders/glsl100/outline_hull.fs b/examples/shaders/resources/shaders/glsl100/outline_hull.fs
new file mode 100644
index 000000000..c8a33de08
--- /dev/null
+++ b/examples/shaders/resources/shaders/glsl100/outline_hull.fs
@@ -0,0 +1,7 @@
+#version 330
+
+out vec4 finalColor;
+
+void main() {
+    finalColor = vec4(0.05, 0.05, 0.05, 1.0);
+}
diff --git a/examples/shaders/resources/shaders/glsl100/outline_hull.vs b/examples/shaders/resources/shaders/glsl100/outline_hull.vs
new file mode 100644
index 000000000..4a3dafdce
--- /dev/null
+++ b/examples/shaders/resources/shaders/glsl100/outline_hull.vs
@@ -0,0 +1,15 @@
+#version 330
+
+in vec3 vertexPosition;
+in vec3 vertexNormal;
+in vec2 vertexTexCoord;
+in vec4 vertexColor;
+
+uniform mat4  mvp;
+uniform float outlineThickness;
+
+void main() {
+    // Extrude vertex along its normal to create the hull.
+    vec3 extruded = vertexPosition + vertexNormal * outlineThickness;
+    gl_Position   = mvp * vec4(extruded, 1.0);
+}
diff --git a/examples/shaders/resources/shaders/glsl120/outline_hull.fs b/examples/shaders/resources/shaders/glsl120/outline_hull.fs
new file mode 100644
index 000000000..c8a33de08
--- /dev/null
+++ b/examples/shaders/resources/shaders/glsl120/outline_hull.fs
@@ -0,0 +1,7 @@
+#version 330
+
+out vec4 finalColor;
+
+void main() {
+    finalColor = vec4(0.05, 0.05, 0.05, 1.0);
+}
diff --git a/examples/shaders/resources/shaders/glsl120/outline_hull.vs b/examples/shaders/resources/shaders/glsl120/outline_hull.vs
new file mode 100644
index 000000000..4a3dafdce
--- /dev/null
+++ b/examples/shaders/resources/shaders/glsl120/outline_hull.vs
@@ -0,0 +1,15 @@
+#version 330
+
+in vec3 vertexPosition;
+in vec3 vertexNormal;
+in vec2 vertexTexCoord;
+in vec4 vertexColor;
+
+uniform mat4  mvp;
+uniform float outlineThickness;
+
+void main() {
+    // Extrude vertex along its normal to create the hull.
+    vec3 extruded = vertexPosition + vertexNormal * outlineThickness;
+    gl_Position   = mvp * vec4(extruded, 1.0);
+}
diff --git a/examples/shaders/shaders_cel_shading.png b/examples/shaders/shaders_cel_shading.png
index 2ca6ab570..51b98225e 100644
Binary files a/examples/shaders/shaders_cel_shading.png and b/examples/shaders/shaders_cel_shading.png differ