Fix debug wireframe renderer

src/renderer.cpp

@@ -84,21 +84,42 @@ void Renderer::draw_debug_wireframes(const Scene& scene, const Camera& camera,
                                      const Rc<Shader>& debug_shader,
                                      const Rc<Mesh>& default_mesh)
 {
-    update_global_data(scene, camera, screen_width, screen_height);
+    debug_shader->bind();
+    debug_shader->set_mat4("u_view_projection", camera.get_view_projection_matrix(screen_width, screen_height));
 
     set_wireframe(true);
-    debug_shader->bind();
 
-    for (const auto& entity : scene.get_entities()) {
+    // Draw all standard entities (green)
+    debug_shader->set_vec3("u_color", glm::vec3(0.0f, 0.7f, 0.0f));
+    for (const Entity& entity : scene.get_entities()) {
+        // If an entity has no mesh, use the default debug mesh
+        auto mesh = entity.mesh ? entity.mesh : default_mesh;
+
         debug_shader->set_mat4("u_model", entity.transform.get_model_matrix());
-
-        if (entity.mesh) {
-            entity.mesh->draw();
-        } else {
-            default_mesh->draw();
-        }
+        mesh->draw();
     }
 
+    // Draw point lights (yellow)
+    debug_shader->set_vec3("u_color", glm::vec3(0.7f, 0.7f, 0.0f));
+    for (const PointLight& light : scene.light_environment.point_lights) {
+        glm::mat4 model = glm::translate(glm::mat4(1.0f), light.position);
+        model = glm::scale(model, glm::vec3(0.2f));
+
+        debug_shader->set_mat4("u_model", model);
+        default_mesh->draw();
+    }
+
+    // Draw spot lights (cyan)
+    debug_shader->set_vec3("u_color", glm::vec3(0.0f, 0.7f, 0.7f));
+    for (const SpotLight& light : scene.light_environment.spot_lights) {
+        glm::mat4 model = glm::translate(glm::mat4(1.0f), light.position);
+        model = glm::scale(model, glm::vec3(0.2f));
+
+        debug_shader->set_mat4("u_model", model);
+        default_mesh->draw();
+    }
+
+    // Restore state
     set_wireframe(false);
 }