adding ambient lighting

src/util/BRDF.cpp

@@ -9,6 +9,6 @@ glm::vec3 BRDF::evaluate(HitInfo hit, glm::vec3 viewDir, glm::vec3 lightDir, glm
   glm::vec3 h = glm::normalize(lightDir + viewDir);
   float specular = pow(std::min(std::max(glm::dot(normal, h), 0.0f), 1.0f), shininess);
 
-  return (albedo * diffuse * lightColor);
+  return (albedo * diffuse * lightColor) + glm::vec3(0.03, 0.03, 0.03);
   //+(specularColor * specular);
 }

src/util/Camera.h

@@ -4,7 +4,7 @@
 struct Camera
 {
     glm::vec3 position;
-    glm::vec3 direction;
+    glm::vec3 target;
     glm::vec2 sensorSize = glm::vec2(0.036, 0.024);
     float S_O = 6.9;
     float f = 0.7;