From d566d2200ccbac46890759715f3295d4f531ee07 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20S=C3=BC=C3=9Fenbach?= <asuessenbach@nvidia.com>
Date: Thu, 16 May 2019 08:07:36 +0200
Subject: [PATCH] Add helper function to copy a vector of UniqueHandles into a
 vector of UniqueHandle::element_type. (#327)

---
 VulkanHppGenerator.cpp | 10 +++++++++-
 vulkan/vulkan.hpp      | 10 +++++++++-
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/VulkanHppGenerator.cpp b/VulkanHppGenerator.cpp
index 64247df..d4f66b1 100644
--- a/VulkanHppGenerator.cpp
+++ b/VulkanHppGenerator.cpp
@@ -4604,8 +4604,8 @@ int main( int argc, char **argv )
   {
   private:
     using Deleter = typename UniqueHandleTraits<Type,Dispatch>::deleter;
-  public:
 
+  public:
     using element_type = Type;
 
     explicit UniqueHandle( Type const& value = Type(), Deleter const& deleter = Deleter() )
@@ -4695,6 +4695,14 @@ int main( int argc, char **argv )
     Type    m_value;
   };
 
+  template <typename UniqueType>
+  VULKAN_HPP_INLINE std::vector<typename UniqueType::element_type> uniqueToRaw(std::vector<UniqueType> const& handles)
+  {
+    std::vector<typename UniqueType::element_type> newBuffer(handles.size());
+    std::transform(handles.begin(), handles.end(), newBuffer.begin(), [](UniqueType const& handle) { return handle.get(); });
+    return newBuffer;
+  }
+
   template <typename Type, typename Dispatch>
   VULKAN_HPP_INLINE void swap( UniqueHandle<Type,Dispatch> & lhs, UniqueHandle<Type,Dispatch> & rhs )
   {
diff --git a/vulkan/vulkan.hpp b/vulkan/vulkan.hpp
index a3a4823..ec59e0a 100644
--- a/vulkan/vulkan.hpp
+++ b/vulkan/vulkan.hpp
@@ -508,8 +508,8 @@ namespace VULKAN_HPP_NAMESPACE
   {
   private:
     using Deleter = typename UniqueHandleTraits<Type,Dispatch>::deleter;
-  public:
 
+  public:
     using element_type = Type;
 
     explicit UniqueHandle( Type const& value = Type(), Deleter const& deleter = Deleter() )
@@ -599,6 +599,14 @@ namespace VULKAN_HPP_NAMESPACE
     Type    m_value;
   };
 
+  template <typename UniqueType>
+  VULKAN_HPP_INLINE std::vector<typename UniqueType::element_type> uniqueToRaw(std::vector<UniqueType> const& handles)
+  {
+    std::vector<typename UniqueType::element_type> newBuffer(handles.size());
+    std::transform(handles.begin(), handles.end(), newBuffer.begin(), [](UniqueType const& handle) { return handle.get(); });
+    return newBuffer;
+  }
+
   template <typename Type, typename Dispatch>
   VULKAN_HPP_INLINE void swap( UniqueHandle<Type,Dispatch> & lhs, UniqueHandle<Type,Dispatch> & rhs )
   {