Code and content re-work: advanced OpenGL and advanced lighting.

src/5.advanced_lighting/3.2.1.point_shadows/3.2.1.point_shadows.fs

@@ -40,22 +40,22 @@ void main()
     vec3 color = texture(diffuseTexture, fs_in.TexCoords).rgb;
     vec3 normal = normalize(fs_in.Normal);
     vec3 lightColor = vec3(0.3);
-    // Ambient
+    // ambient
     vec3 ambient = 0.3 * color;
-    // Diffuse
+    // diffuse
     vec3 lightDir = normalize(lightPos - fs_in.FragPos);
     float diff = max(dot(lightDir, normal), 0.0);
     vec3 diffuse = diff * lightColor;
-    // Specular
+    // specular
     vec3 viewDir = normalize(viewPos - fs_in.FragPos);
     vec3 reflectDir = reflect(-lightDir, normal);
     float spec = 0.0;
     vec3 halfwayDir = normalize(lightDir + viewDir);  
     spec = pow(max(dot(normal, halfwayDir), 0.0), 64.0);
     vec3 specular = spec * lightColor;    
-    // Calculate shadow
+    // calculate shadow
     float shadow = shadows ? ShadowCalculation(fs_in.FragPos) : 0.0;                      
     vec3 lighting = (ambient + (1.0 - shadow) * (diffuse + specular)) * color;    
     
-    FragColor = vec4(lighting, 1.0f);
+    FragColor = vec4(lighting, 1.0);
 }