diff --git a/assets/shaders/singleDiffuseLight/singleDiffuseLight_frag.glsl b/assets/shaders/singleDiffuseLight/singleDiffuseLight_frag.glsl
index aed8177..ef07f44 100644
--- a/assets/shaders/singleDiffuseLight/singleDiffuseLight_frag.glsl
+++ b/assets/shaders/singleDiffuseLight/singleDiffuseLight_frag.glsl
@@ -2,9 +2,50 @@
 precision mediump float;
 #endif
 
+// Camera world space position.
+uniform vec3 u_cameraPos;
+
+// Light source position
+uniform vec4 u_lightPos;
+
+// Diffuse light color.
+uniform vec4 u_lightDiffuse;
+
+// Ambient light color.
+uniform vec4 u_ambient;
+
+// Shininess.
+uniform float u_shiny;
+
+// Fragment position.
+varying vec4 v_position;
+
+// Fragment normal.
+varying vec3 v_normal;
+
 // Fragment color received from the vertex shader.
 varying vec4 v_color;
 
 void main(){
-	gl_FragColor = v_color;
+	vec3 normal = normalize(v_normal);
+	vec3 lightVector = normalize(u_lightPos.xyz - v_position.xyz);
+	vec3 eyeVector = normalize(u_cameraPos.xyz - v_position.xyz);
+	vec3 reflectedVector = normalize(-reflect(lightVector, normal));
+
+	// Ambient Term.
+	vec4 ambient = u_ambient;
+
+	// Diffuse Term.
+	vec4 diffuse = u_lightDiffuse * max(dot(normal, lightVector), 0.0);
+	diffuse = clamp(diffuse, 0.0, 1.0);
+
+	// Specular Term:
+	vec4 specular = vec4(1.0) * pow(max(dot(reflectedVector, eyeVector), 0.0), 0.3 * u_shiny);
+	specular = clamp(specular, 0.0, 1.0);
+
+	// Aggregate light color.
+	vec4 lightColor = vec4(ambient.rgb + diffuse.rgb + specular.rgb, 1.0);
+
+	// Final color.
+	gl_FragColor = clamp(lightColor * v_color, 0.0, 1.0);
 }
diff --git a/assets/shaders/singleDiffuseLight/singleDiffuseLight_vert.glsl b/assets/shaders/singleDiffuseLight/singleDiffuseLight_vert.glsl
index 2a2b274..1598b8f 100644
--- a/assets/shaders/singleDiffuseLight/singleDiffuseLight_vert.glsl
+++ b/assets/shaders/singleDiffuseLight/singleDiffuseLight_vert.glsl
@@ -1,16 +1,31 @@
 // Model-view matrix.
 uniform mat4 u_projTrans;
 
+// Normal matrix.
+uniform mat4 u_normalMat;
+
 // Vertex position in world coordinates.
 attribute vec4 a_position;
 
+// Vertex normal.
+attribute vec4 a_normal;
+
 // Vertex color.
 attribute vec4 a_color;
 
+// Vertex position to pass to the fragment shader.
+varying vec4 v_position;
+
+// Vertex normal to pass to the fragment shader.
+varying vec3 v_normal;
+
 // Vertex color to pass to the fragment shader.
 varying vec4 v_color;
 
 void main(){
+	v_position = u_projTrans * a_position;
 	v_color = a_color;
-	gl_Position = u_projTrans * a_position;
+	v_normal = vec3(u_normalMat * a_normal);
+
+	gl_Position = v_position;
 }