Added an option to get the current vk instance

Signed-off-by: Fabian Sauter <sauter.fabian@mailbox.org>

src/Manager.cpp

@@ -458,4 +458,10 @@ Manager::listDevices() const
     return this->mInstance->enumeratePhysicalDevices();
 }
 
+std::shared_ptr<vk::Instance>
+Manager::getVkInstance() const
+{
+    return mInstance;
+}
+
 }

src/include/kompute/Manager.hpp

@@ -215,6 +215,14 @@ class Manager
      **/
     std::vector<vk::PhysicalDevice> listDevices() const;
 
+    /**
+     * The current Vulkan instance.
+     *
+     * @return a shared pointer to the current Vulkan instance held by this
+     *object
+     **/
+    std::shared_ptr<vk::Instance> getVkInstance() const;
+
   private:
     // -------------- OPTIONALLY OWNED RESOURCES
     std::shared_ptr<vk::Instance> mInstance = nullptr;