Added phong lighting

examples/movement/shaders/fragmentShader.frag

@@ -1,4 +1,10 @@
 #version 330 core
+struct Material 
+{
+	vec3 ambient, diffuse, specular;
+	float shininess;
+};
+
 in vec2 oUV;
 in vec3 oNormal;
 in vec3 oFragPos;
@@ -14,18 +20,30 @@ uniform vec3 ambientColor;
 uniform vec3 lightPos;
 uniform vec3 lightColor;
 
+uniform vec3 viewPos;
+
+uniform Material material;
+
 void main()
 {
-	vec3 ambient = ambientColor * ambientStrength;
+	// Ambient light
+	vec3 ambient = ambientColor * ambientStrength * material.ambient;
+
 	vec3 norm = normalize(oNormal);
+	// Diffuse light
 	vec3 lightDir = normalize(lightPos - oFragPos);
 
-	float diff = max(dot(norm, lightDir), 0.0) * 2.0;
-	diff *= min(1.0 / pow(length(lightPos - oFragPos), 2), 2.0);
-	
-	vec3 diffuse = diff * lightColor;
+	float diff = max(dot(norm, lightDir), 0.0);
+	vec3 diffuse = (diff * material.diffuse) * lightColor;
+
+	// Specular light
+	vec3 viewDir = normalize(viewPos - oFragPos);
+	vec3 reflectDir = reflect(-lightDir, norm);
+
+	float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+	vec3 specular = (material.specular * spec) * lightColor;
 
 	vec4 objColor = mix(texture(texture1, oUV), texture(texture2, oUV), 0.2);
 
-	FragColor = vec4(ambient + diffuse, 1.0) * objColor;
+	FragColor = vec4(ambient + diffuse + specular, 1.0) * objColor;
 }