Restrict template argument Dispatch to only take evaluate the newly introduced type trait isDispatchLoader with value == true. (#2360)

* iunclude vulkan.h before the import

* replace std.compat with std

VulkanHppGenerator.cpp

@@ -1710,7 +1710,7 @@ void VulkanHppGenerator::extendSpecialCommands( std::string const & name, bool d
         cmd.insert(
           pos,
           R"(  // wrapper function for command vkSetDebugUtilsObjectNameEXT, see https://registry.khronos.org/vulkan/specs/latest/man/html/vkSetDebugUtilsObjectNameEXT.html
-  template <typename HandleType, typename Dispatch>
+  template <typename HandleType, typename Dispatch, typename std::enable_if<detail::isDispatchLoader<Dispatch>::value, bool>::type>
   VULKAN_HPP_NODISCARD_WHEN_NO_EXCEPTIONS VULKAN_HPP_INLINE typename ResultValueType<void>::type
                                           Device::setDebugUtilsObjectNameEXT( HandleType const & handle, std::string const & name, Dispatch const & d ) const
   {
@@ -1728,7 +1728,7 @@ void VulkanHppGenerator::extendSpecialCommands( std::string const & name, bool d
       {
         cmd.insert( pos, R"(    // wrapper function for command vkSetDebugUtilsObjectNameEXT, see
     // https://registry.khronos.org/vulkan/specs/latest/man/html/vkSetDebugUtilsObjectNameEXT.html
-    template <typename HandleType, typename Dispatch = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
+    template <typename HandleType, typename Dispatch = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE, typename std::enable_if<detail::isDispatchLoader<Dispatch>::value, bool>::type = true>
     VULKAN_HPP_NODISCARD_WHEN_NO_EXCEPTIONS typename ResultValueType<void>::type
       setDebugUtilsObjectNameEXT( HandleType const & handle, std::string const & name, Dispatch const & d VULKAN_HPP_DEFAULT_DISPATCHER_ASSIGNMENT ) const;
 )" );
@@ -1781,7 +1781,7 @@ void VulkanHppGenerator::extendSpecialCommands( std::string const & name, bool d
         cmd.insert(
           pos,
           R"(  // wrapper function for command vkSetDebugUtilsObjectTagEXT, see https://registry.khronos.org/vulkan/specs/latest/man/html/vkSetDebugUtilsObjectTagEXT.html
-  template <typename HandleType, typename TagType, typename Dispatch>
+  template <typename HandleType, typename TagType, typename Dispatch, typename std::enable_if<detail::isDispatchLoader<Dispatch>::value, bool>::type>
   VULKAN_HPP_NODISCARD_WHEN_NO_EXCEPTIONS VULKAN_HPP_INLINE typename ResultValueType<void>::type
     Device::setDebugUtilsObjectTagEXT( HandleType const & handle, uint64_t name, TagType const & tag, Dispatch const & d ) const
   {
@@ -1801,7 +1801,7 @@ void VulkanHppGenerator::extendSpecialCommands( std::string const & name, bool d
       {
         cmd.insert( pos, R"(    // wrapper function for command vkSetDebugUtilsObjectTagEXT, see
     // https://registry.khronos.org/vulkan/specs/latest/man/html/vkSetDebugUtilsObjectTagEXT.html
-    template <typename HandleType, typename TagType, typename Dispatch = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
+    template <typename HandleType, typename TagType, typename Dispatch = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE, typename std::enable_if<detail::isDispatchLoader<Dispatch>::value, bool>::type = true>
     VULKAN_HPP_NODISCARD_WHEN_NO_EXCEPTIONS typename ResultValueType<void>::type setDebugUtilsObjectTagEXT(
       HandleType const & handle, uint64_t name, TagType const & tag, Dispatch const & d VULKAN_HPP_DEFAULT_DISPATCHER_ASSIGNMENT ) const;
 )" );
@@ -3293,7 +3293,7 @@ std::string VulkanHppGenerator::generateCommandEnhanced( std::string const &
 
     std::string const functionTemplate =
       R"(  // wrapper function for command ${vkCommandName}, see https://registry.khronos.org/vulkan/specs/latest/man/html/${vkCommandName}.html
-  template <${argumentTemplates}${allocatorTemplates}typename Dispatch${uniqueHandleAllocatorTemplates}${typenameCheck}>
+  template <${argumentTemplates}${allocatorTemplates}typename Dispatch${uniqueHandleAllocatorTemplates}${typenameCheck}, typename std::enable_if<detail::isDispatchLoader<Dispatch>::value, bool>::type>
   ${nodiscard}VULKAN_HPP_INLINE ${decoratedReturnType} ${className}${classSeparator}${commandName}( ${argumentList} )${const}${noexcept}
   {
     VULKAN_HPP_ASSERT( d.getVkHeaderVersion() == VK_HEADER_VERSION );
@@ -3336,7 +3336,7 @@ ${vectorSizeCheck}
   {
     std::string const functionTemplate =
       R"(    // wrapper function for command ${vkCommandName}, see https://registry.khronos.org/vulkan/specs/latest/man/html/${vkCommandName}.html
-    template <${argumentTemplates}${allocatorTemplates}typename Dispatch = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE${uniqueHandleAllocatorTemplates}${typenameCheck}>
+    template <${argumentTemplates}${allocatorTemplates}typename Dispatch = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE${uniqueHandleAllocatorTemplates}${typenameCheck}, typename std::enable_if<detail::isDispatchLoader<Dispatch>::value, bool>::type = true>
     ${nodiscard}${decoratedReturnType} ${commandName}( ${argumentList} )${const}${noexcept};)";
 
     return replaceWithMap( functionTemplate,
@@ -4487,7 +4487,7 @@ std::string
 
     std::string const functionTemplate =
       R"(  // wrapper function for command ${vkCommandName}, see https://registry.khronos.org/vulkan/specs/latest/man/html/${vkCommandName}.html
-  template <typename Dispatch>
+  template <typename Dispatch, typename std::enable_if<detail::isDispatchLoader<Dispatch>::value, bool>::type>
   ${nodiscard}VULKAN_HPP_INLINE ${returnType} ${className}${classSeparator}${commandName}( ${argumentList} )${const} VULKAN_HPP_NOEXCEPT
   {
     VULKAN_HPP_ASSERT( d.getVkHeaderVersion() == VK_HEADER_VERSION );
@@ -4509,7 +4509,7 @@ std::string
   {
     std::string const functionTemplate =
       R"(    // wrapper function for command ${vkCommandName}, see https://registry.khronos.org/vulkan/specs/latest/man/html/${vkCommandName}.html
-    template <typename Dispatch = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
+    template <typename Dispatch = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE, typename std::enable_if<detail::isDispatchLoader<Dispatch>::value, bool>::type = true>
     ${nodiscard}${returnType} ${commandName}( ${argumentList} VULKAN_HPP_DEFAULT_DISPATCHER_ASSIGNMENT )${const} VULKAN_HPP_NOEXCEPT;)";
 
     return replaceWithMap( functionTemplate,
@@ -5509,6 +5509,7 @@ std::string VulkanHppGenerator::generateCppModuleUsings() const
 #endif /*VK_NO_PROTOTYPES*/
     using VULKAN_HPP_NAMESPACE::detail::createResultValueType;
     using VULKAN_HPP_NAMESPACE::detail::resultCheck;
+    using VULKAN_HPP_NAMESAPCE::detail::isDispatchLoader;
   }
 #if !defined( VULKAN_HPP_DISABLE_ENHANCED_MODE )
   namespace VULKAN_HPP_RAII_NAMESPACE
@@ -6799,7 +6800,14 @@ ${deviceCommandAssignments}
       static DynamicLoader dl;
       init(instance, device, dl);
     }
-  };)";
+  };
+
+  template <>
+  struct isDispatchLoader<DispatchLoaderDynamic>
+  {
+    static VULKAN_HPP_CONST_OR_CONSTEXPR bool value = true;
+  };
+)";
 
   std::string           commandMembers, deviceCommandAssignments, initialCommandAssignments, instanceCommandAssignments;
   std::set<std::string> listedCommands;  // some commands are listed with more than one extension!
@@ -6902,6 +6910,12 @@ std::string VulkanHppGenerator::generateDispatchLoaderStatic() const
 ${commands}
   };
 
+  template <>
+  struct isDispatchLoader<DispatchLoaderStatic>
+  {
+    static VULKAN_HPP_CONST_OR_CONSTEXPR bool value = true;
+  };
+
   inline DispatchLoaderStatic & getDispatchLoaderStatic()
   {
     static DispatchLoaderStatic dls;

snippets/CppmTemplate.hpp

@@ -24,7 +24,7 @@ module;
 #include <vulkan/${api}_shared.hpp>
 
 export module ${api}_hpp;
-export import std.compat;
+export import std;
 
 export namespace VULKAN_HPP_NAMESPACE
 {

snippets/DispatchLoaderBase.hpp

@@ -20,3 +20,10 @@
     bool   m_valid         = true;
 #endif
   };
+  
+  template <typename Type>
+  struct isDispatchLoader
+  {
+    static VULKAN_HPP_CONST_OR_CONSTEXPR bool value = false;
+  };
+  

snippets/SharedHppTemplate.hpp

@@ -317,13 +317,12 @@ namespace VULKAN_HPP_NAMESPACE
 #    pragma clang diagnostic ignored "-Wcast-function-type"
 #  endif
 
-    template <typename HandleType>
+    template <typename HandleType, typename Dispatcher = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
     class ObjectDestroyShared
     {
     public:
       using DestructorType = typename SharedHandleTraits<HandleType>::DestructorType;
 
-      template <class Dispatcher>
       using DestroyFunctionPointerType =
         typename std::conditional<HasDestructor<HandleType>::value,
                                   void ( DestructorType::* )( HandleType, const AllocationCallbacks *, const Dispatcher & ) const,
@@ -331,10 +330,9 @@ namespace VULKAN_HPP_NAMESPACE
 
       using SelectorType = typename std::conditional<HasDestructor<HandleType>::value, DestructorType, HandleType>::type;
 
-      template <typename Dispatcher = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
       ObjectDestroyShared( Optional<const AllocationCallbacks> allocationCallbacks VULKAN_HPP_DEFAULT_ASSIGNMENT( nullptr ),
                            const Dispatcher & dispatch         VULKAN_HPP_DEFAULT_DISPATCHER_ASSIGNMENT )
-        : m_destroy( reinterpret_cast<decltype( m_destroy )>( static_cast<DestroyFunctionPointerType<Dispatcher>>( &SelectorType::destroy ) ) )
+        : m_destroy( reinterpret_cast<decltype( m_destroy )>( static_cast<DestroyFunctionPointerType>( &SelectorType::destroy ) ) )
         , m_dispatch( &dispatch )
         , m_allocationCallbacks( allocationCallbacks )
       {
@@ -356,24 +354,22 @@ namespace VULKAN_HPP_NAMESPACE
       }
 
     private:
-      DestroyFunctionPointerType<detail::DispatchLoaderBase> m_destroy             = nullptr;
+      DestroyFunctionPointerType          m_destroy             = nullptr;
-      const detail::DispatchLoaderBase *                     m_dispatch            = nullptr;
+      const Dispatcher *                  m_dispatch            = nullptr;
-      Optional<const AllocationCallbacks>                    m_allocationCallbacks = nullptr;
+      Optional<const AllocationCallbacks> m_allocationCallbacks = nullptr;
     };
 
-    template <typename HandleType>
+    template <typename HandleType, typename Dispatcher = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
     class ObjectFreeShared
     {
     public:
       using DestructorType = typename SharedHandleTraits<HandleType>::DestructorType;
 
-      template <class Dispatcher>
       using DestroyFunctionPointerType = void ( DestructorType::* )( HandleType, const AllocationCallbacks *, const Dispatcher & ) const;
 
-      template <class Dispatcher = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
       ObjectFreeShared( Optional<const AllocationCallbacks> allocationCallbacks VULKAN_HPP_DEFAULT_ASSIGNMENT( nullptr ),
                         const Dispatcher & dispatch         VULKAN_HPP_DEFAULT_DISPATCHER_ASSIGNMENT )
-        : m_destroy( reinterpret_cast<decltype( m_destroy )>( static_cast<DestroyFunctionPointerType<Dispatcher>>( &DestructorType::free ) ) )
+        : m_destroy( reinterpret_cast<decltype( m_destroy )>( static_cast<DestroyFunctionPointerType>( &DestructorType::free ) ) )
         , m_dispatch( &dispatch )
         , m_allocationCallbacks( allocationCallbacks )
       {
@@ -387,23 +383,21 @@ namespace VULKAN_HPP_NAMESPACE
       }
 
     private:
-      DestroyFunctionPointerType<detail::DispatchLoaderBase> m_destroy             = nullptr;
+      DestroyFunctionPointerType          m_destroy             = nullptr;
-      const detail::DispatchLoaderBase *                     m_dispatch            = nullptr;
+      const Dispatcher *                  m_dispatch            = nullptr;
-      Optional<const AllocationCallbacks>                    m_allocationCallbacks = nullptr;
+      Optional<const AllocationCallbacks> m_allocationCallbacks = nullptr;
     };
 
-    template <typename HandleType>
+    template <typename HandleType, typename Dispatcher = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
     class ObjectReleaseShared
     {
     public:
       using DestructorType = typename SharedHandleTraits<HandleType>::DestructorType;
 
-      template <class Dispatcher>
       using DestroyFunctionPointerType = void ( DestructorType::* )( HandleType, const Dispatcher & ) const;
 
-      template <class Dispatcher = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
       ObjectReleaseShared( const Dispatcher & dispatch VULKAN_HPP_DEFAULT_DISPATCHER_ASSIGNMENT )
-        : m_destroy( reinterpret_cast<decltype( m_destroy )>( static_cast<DestroyFunctionPointerType<Dispatcher>>( &DestructorType::release ) ) )
+        : m_destroy( reinterpret_cast<decltype( m_destroy )>( static_cast<DestroyFunctionPointerType>( &DestructorType::release ) ) )
         , m_dispatch( &dispatch )
       {
       }
@@ -416,11 +410,11 @@ namespace VULKAN_HPP_NAMESPACE
       }
 
     private:
-      DestroyFunctionPointerType<detail::DispatchLoaderBase> m_destroy  = nullptr;
+      DestroyFunctionPointerType m_destroy  = nullptr;
-      const detail::DispatchLoaderBase *                     m_dispatch = nullptr;
+      const Dispatcher *         m_dispatch = nullptr;
     };
 
-    template <typename HandleType, typename PoolType>
+    template <typename HandleType, typename PoolType, typename Dispatcher = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
     class PoolFreeShared
     {
     public:
@@ -428,17 +422,14 @@ namespace VULKAN_HPP_NAMESPACE
 
       using PoolTypeExport = PoolType;
 
-      template <class Dispatcher>
       using ReturnType = decltype( std::declval<DestructorType>().free( PoolType(), 0u, nullptr, Dispatcher() ) );
 
-      template <class Dispatcher>
+      using DestroyFunctionPointerType = ReturnType( DestructorType::* )( PoolType, uint32_t, const HandleType *, const Dispatcher & ) const;
-      using DestroyFunctionPointerType = ReturnType<Dispatcher> ( DestructorType::* )( PoolType, uint32_t, const HandleType *, const Dispatcher & ) const;
 
       PoolFreeShared() = default;
 
-      template <class Dispatcher = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
       PoolFreeShared( SharedHandle<PoolType> pool, const Dispatcher & dispatch VULKAN_HPP_DEFAULT_DISPATCHER_ASSIGNMENT )
-        : m_destroy( reinterpret_cast<decltype( m_destroy )>( static_cast<DestroyFunctionPointerType<Dispatcher>>( &DestructorType::free ) ) )
+        : m_destroy( reinterpret_cast<decltype( m_destroy )>( static_cast<DestroyFunctionPointerType>( &DestructorType::free ) ) )
         , m_dispatch( &dispatch )
         , m_pool( std::move( pool ) )
       {
@@ -452,9 +443,9 @@ namespace VULKAN_HPP_NAMESPACE
       }
 
     private:
-      DestroyFunctionPointerType<detail::DispatchLoaderBase> m_destroy  = nullptr;
+      DestroyFunctionPointerType m_destroy  = nullptr;
-      const detail::DispatchLoaderBase *                     m_dispatch = nullptr;
+      const Dispatcher *         m_dispatch = nullptr;
-      SharedHandle<PoolType>                                 m_pool{};
+      SharedHandle<PoolType>     m_pool{};
     };
 
 #  if defined( __GNUC__ ) && !defined( __clang__ ) && !defined( __INTEL_COMPILER )

snippets/includes.hpp

@@ -1,3 +1,4 @@
+#include <vulkan/${vulkan_h}>
 #if !defined( VULKAN_HPP_CXX_MODULE )
 // clang-format off
 #  include <vulkan/vulkan_hpp_macros.hpp>
@@ -27,9 +28,8 @@
 #else
 #  include <cassert>
 #  include <cstring>
-import std.compat;
+import std;
 #endif
-#include <vulkan/${vulkan_h}>
 
 #if VULKAN_HPP_ENABLE_DYNAMIC_LOADER_TOOL == 1
 #  if defined( __unix__ ) || defined( __APPLE__ ) || defined( __QNX__ ) || defined( __Fuchsia__ )

tests/FunctionCalls/FunctionCalls.cpp

@@ -504,6 +504,66 @@ int main( int /*argc*/, char ** /*argv*/ )
     queue.bindSparse( bindSparseInfo, fence );
   }
 
+  // Fence commands
+  {
+    vk::Device              device;
+    vk::FenceCreateInfo     fenceCreateInfo;
+    vk::AllocationCallbacks allocationCallbacks;
+    vk::Fence               fence;
+    vk::Result              result = device.createFence( &fenceCreateInfo, &allocationCallbacks, &fence );
+  }
+  {
+    vk::Device          device;
+    vk::FenceCreateInfo fenceCreateInfo;
+    vk::Fence           fence = device.createFence( fenceCreateInfo );
+  }
+
+  {
+    vk::Device              device;
+    vk::Fence               fence;
+    vk::AllocationCallbacks allocationCallbacks;
+    device.destroyFence( fence, &allocationCallbacks );
+  }
+  {
+    vk::Device device;
+    vk::Fence  fence;
+    device.destroyFence( fence );
+  }
+
+  {
+    vk::Device device;
+    uint32_t   fenceCount = 1;
+    vk::Fence  fence;
+    vk::Result result = device.resetFences( fenceCount, &fence );
+  }
+  {
+    vk::Device device;
+    vk::Fence  fence;
+    device.resetFences( fence );
+  }
+
+  {
+    vk::Device device;
+    vk::Fence  fence;
+    vk::Result result = device.getFenceStatus( fence );
+  }
+
+  {
+    vk::Device device;
+    uint32_t   fenceCount = 1;
+    vk::Fence  fence;
+    vk::Bool32 waitAll = vk::True;
+    uint64_t   timeout = 1000000000;
+    vk::Result result  = device.waitForFences( fenceCount, &fence, waitAll, timeout );
+  }
+  {
+    vk::Device device;
+    vk::Fence  fence;
+    vk::Bool32 waitAll = vk::True;
+    uint64_t   timeout = 1000000000;
+    vk::Result result  = device.waitForFences( fence, waitAll, timeout );
+  }
+
 #if 0
   {
     vk::PhysicalDevice physicalDevice;

tests/FunctionCallsRAII/FunctionCallsRAII.cpp

@@ -106,6 +106,11 @@ int main( int /*argc*/, char ** /*argv*/ )
     vk::DeviceCreateInfo     deviceCreateInfo;
     vk::raii::Device         device = physicalDevice.createDevice( deviceCreateInfo );
   }
+  {
+    vk::raii::PhysicalDevice physicalDevice = nullptr;
+    vk::DeviceCreateInfo     deviceCreateInfo;
+    vk::raii::Device         device( physicalDevice, deviceCreateInfo );
+  }
 
   // Extension discovery commands
   {
@@ -136,6 +141,12 @@ int main( int /*argc*/, char ** /*argv*/ )
     uint32_t         queueIndex       = 0;
     vk::raii::Queue  queue            = device.getQueue( queueFamilyIndex, queueIndex );
   }
+  {
+    vk::raii::Device device           = nullptr;
+    uint32_t         queueFamilyIndex = 0;
+    uint32_t         queueIndex       = 0;
+    vk::raii::Queue  queue( device, queueFamilyIndex, queueIndex );
+  }
 
   {
     vk::raii::Queue queue = nullptr;
@@ -160,6 +171,11 @@ int main( int /*argc*/, char ** /*argv*/ )
     vk::MemoryAllocateInfo memoryAllocateInfo;
     vk::raii::DeviceMemory deviceMemory = device.allocateMemory( memoryAllocateInfo );
   }
+  {
+    vk::raii::Device       device = nullptr;
+    vk::MemoryAllocateInfo memoryAllocateInfo;
+    vk::raii::DeviceMemory deviceMemory( device, memoryAllocateInfo );
+  }
 
   {
     vk::raii::DeviceMemory deviceMemory   = nullptr;
@@ -240,5 +256,36 @@ int main( int /*argc*/, char ** /*argv*/ )
     queue.bindSparse( bindSparseInfo, fence );
   }
 
+  // Fence commands
+  {
+    vk::raii::Device    device = nullptr;
+    vk::FenceCreateInfo fenceCreateInfo;
+    vk::raii::Fence     fence = device.createFence( fenceCreateInfo );
+  }
+  {
+    vk::raii::Device    device = nullptr;
+    vk::FenceCreateInfo fenceCreateInfo;
+    vk::raii::Fence     fence( device, fenceCreateInfo );
+  }
+
+  {
+    vk::raii::Device device = nullptr;
+    vk::Fence        fence;
+    device.resetFences( fence );
+  }
+
+  {
+    vk::raii::Fence fence  = nullptr;
+    vk::Result      result = fence.getStatus();
+  }
+
+  {
+    vk::raii::Device device = nullptr;
+    vk::Fence        fence;
+    vk::Bool32       waitAll = vk::True;
+    uint64_t         timeout = 1000000000;
+    vk::Result       result  = device.waitForFences( fence, waitAll, timeout );
+  }
+
   return 0;
 }

vulkan/vulkan.cppm

@@ -29,7 +29,7 @@ VULKAN_HPP_COMPILE_WARNING( VULKAN_HPP_CXX_MODULE_EXPERIMENTAL_WARNING )
 #include <vulkan/vulkan_shared.hpp>
 
 export module vulkan_hpp;
-export import std.compat;
+export import std;
 
 export namespace VULKAN_HPP_NAMESPACE
 {
@@ -52,6 +52,7 @@ export namespace VULKAN_HPP_NAMESPACE
     using VULKAN_HPP_NAMESPACE::detail::DispatchLoaderStatic;
     using VULKAN_HPP_NAMESPACE::detail::getDispatchLoaderStatic;
 #endif /*VK_NO_PROTOTYPES*/
+    using VULKAN_HPP_NAMESAPCE::detail::isDispatchLoader;
     using VULKAN_HPP_NAMESPACE::detail::createResultValueType;
     using VULKAN_HPP_NAMESPACE::detail::resultCheck;
   }  // namespace detail

vulkan/vulkan.hpp

@@ -8,6 +8,7 @@
 #ifndef VULKAN_HPP
 #define VULKAN_HPP
 
+#include <vulkan/vulkan.h>
 #if !defined( VULKAN_HPP_CXX_MODULE )
 // clang-format off
 #  include <vulkan/vulkan_hpp_macros.hpp>
@@ -37,9 +38,8 @@
 #else
 #  include <cassert>
 #  include <cstring>
-import std.compat;
+import std;
 #endif
-#include <vulkan/vulkan.h>
 
 #if VULKAN_HPP_ENABLE_DYNAMIC_LOADER_TOOL == 1
 #  if defined( __unix__ ) || defined( __APPLE__ ) || defined( __QNX__ ) || defined( __Fuchsia__ )
@@ -1023,6 +1023,12 @@ namespace VULKAN_HPP_NAMESPACE
 #endif
     };
 
+    template <typename Type>
+    struct isDispatchLoader
+    {
+      static VULKAN_HPP_CONST_OR_CONSTEXPR bool value = false;
+    };
+
 #if !defined( VK_NO_PROTOTYPES ) || ( defined( VULKAN_HPP_DISPATCH_LOADER_DYNAMIC ) && ( VULKAN_HPP_DISPATCH_LOADER_DYNAMIC == 0 ) )
     class DispatchLoaderStatic : public DispatchLoaderBase
     {
@@ -6600,6 +6606,12 @@ namespace VULKAN_HPP_NAMESPACE
       }
     };
 
+    template <>
+    struct isDispatchLoader<DispatchLoaderStatic>
+    {
+      static VULKAN_HPP_CONST_OR_CONSTEXPR bool value = true;
+    };
+
     inline DispatchLoaderStatic & getDispatchLoaderStatic()
     {
       static DispatchLoaderStatic dls;
@@ -24151,6 +24163,13 @@ namespace VULKAN_HPP_NAMESPACE
         init( instance, device, dl );
       }
     };
+
+    template <>
+    struct isDispatchLoader<DispatchLoaderDynamic>
+    {
+      static VULKAN_HPP_CONST_OR_CONSTEXPR bool value = true;
+    };
+
   }  // namespace detail
 }  // namespace VULKAN_HPP_NAMESPACE
 #endif

vulkan/vulkan_shared.hpp

@@ -321,13 +321,12 @@ namespace VULKAN_HPP_NAMESPACE
 #    pragma clang diagnostic ignored "-Wcast-function-type"
 #  endif
 
-    template <typename HandleType>
+    template <typename HandleType, typename Dispatcher = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
     class ObjectDestroyShared
     {
     public:
       using DestructorType = typename SharedHandleTraits<HandleType>::DestructorType;
 
-      template <class Dispatcher>
       using DestroyFunctionPointerType =
         typename std::conditional<HasDestructor<HandleType>::value,
                                   void ( DestructorType::* )( HandleType, const AllocationCallbacks *, const Dispatcher & ) const,
@@ -335,10 +334,9 @@ namespace VULKAN_HPP_NAMESPACE
 
       using SelectorType = typename std::conditional<HasDestructor<HandleType>::value, DestructorType, HandleType>::type;
 
-      template <typename Dispatcher = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
       ObjectDestroyShared( Optional<const AllocationCallbacks> allocationCallbacks VULKAN_HPP_DEFAULT_ASSIGNMENT( nullptr ),
                            const Dispatcher & dispatch                             VULKAN_HPP_DEFAULT_DISPATCHER_ASSIGNMENT )
-        : m_destroy( reinterpret_cast<decltype( m_destroy )>( static_cast<DestroyFunctionPointerType<Dispatcher>>( &SelectorType::destroy ) ) )
+        : m_destroy( reinterpret_cast<decltype( m_destroy )>( static_cast<DestroyFunctionPointerType>( &SelectorType::destroy ) ) )
         , m_dispatch( &dispatch )
         , m_allocationCallbacks( allocationCallbacks )
       {
@@ -360,24 +358,22 @@ namespace VULKAN_HPP_NAMESPACE
       }
 
     private:
-      DestroyFunctionPointerType<detail::DispatchLoaderBase> m_destroy             = nullptr;
+      DestroyFunctionPointerType          m_destroy             = nullptr;
-      const detail::DispatchLoaderBase *                     m_dispatch            = nullptr;
+      const Dispatcher *                  m_dispatch            = nullptr;
-      Optional<const AllocationCallbacks>                    m_allocationCallbacks = nullptr;
+      Optional<const AllocationCallbacks> m_allocationCallbacks = nullptr;
     };
 
-    template <typename HandleType>
+    template <typename HandleType, typename Dispatcher = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
     class ObjectFreeShared
     {
     public:
       using DestructorType = typename SharedHandleTraits<HandleType>::DestructorType;
 
-      template <class Dispatcher>
       using DestroyFunctionPointerType = void ( DestructorType::* )( HandleType, const AllocationCallbacks *, const Dispatcher & ) const;
 
-      template <class Dispatcher = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
       ObjectFreeShared( Optional<const AllocationCallbacks> allocationCallbacks VULKAN_HPP_DEFAULT_ASSIGNMENT( nullptr ),
                         const Dispatcher & dispatch                             VULKAN_HPP_DEFAULT_DISPATCHER_ASSIGNMENT )
-        : m_destroy( reinterpret_cast<decltype( m_destroy )>( static_cast<DestroyFunctionPointerType<Dispatcher>>( &DestructorType::free ) ) )
+        : m_destroy( reinterpret_cast<decltype( m_destroy )>( static_cast<DestroyFunctionPointerType>( &DestructorType::free ) ) )
         , m_dispatch( &dispatch )
         , m_allocationCallbacks( allocationCallbacks )
       {
@@ -391,24 +387,21 @@ namespace VULKAN_HPP_NAMESPACE
       }
 
     private:
-      DestroyFunctionPointerType<detail::DispatchLoaderBase> m_destroy             = nullptr;
+      DestroyFunctionPointerType          m_destroy             = nullptr;
-      const detail::DispatchLoaderBase *                     m_dispatch            = nullptr;
+      const Dispatcher *                  m_dispatch            = nullptr;
-      Optional<const AllocationCallbacks>                    m_allocationCallbacks = nullptr;
+      Optional<const AllocationCallbacks> m_allocationCallbacks = nullptr;
     };
 
-    template <typename HandleType>
+    template <typename HandleType, typename Dispatcher = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
     class ObjectReleaseShared
     {
     public:
       using DestructorType = typename SharedHandleTraits<HandleType>::DestructorType;
 
-      template <class Dispatcher>
       using DestroyFunctionPointerType = void ( DestructorType::* )( HandleType, const Dispatcher & ) const;
 
-      template <class Dispatcher = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
       ObjectReleaseShared( const Dispatcher & dispatch VULKAN_HPP_DEFAULT_DISPATCHER_ASSIGNMENT )
-        : m_destroy( reinterpret_cast<decltype( m_destroy )>( static_cast<DestroyFunctionPointerType<Dispatcher>>( &DestructorType::release ) ) )
+        : m_destroy( reinterpret_cast<decltype( m_destroy )>( static_cast<DestroyFunctionPointerType>( &DestructorType::release ) ) ), m_dispatch( &dispatch )
-        , m_dispatch( &dispatch )
       {
       }
 
@@ -420,11 +413,11 @@ namespace VULKAN_HPP_NAMESPACE
       }
 
     private:
-      DestroyFunctionPointerType<detail::DispatchLoaderBase> m_destroy  = nullptr;
+      DestroyFunctionPointerType m_destroy  = nullptr;
-      const detail::DispatchLoaderBase *                     m_dispatch = nullptr;
+      const Dispatcher *         m_dispatch = nullptr;
     };
 
-    template <typename HandleType, typename PoolType>
+    template <typename HandleType, typename PoolType, typename Dispatcher = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
     class PoolFreeShared
     {
     public:
@@ -432,17 +425,14 @@ namespace VULKAN_HPP_NAMESPACE
 
       using PoolTypeExport = PoolType;
 
-      template <class Dispatcher>
       using ReturnType = decltype( std::declval<DestructorType>().free( PoolType(), 0u, nullptr, Dispatcher() ) );
 
-      template <class Dispatcher>
+      using DestroyFunctionPointerType = ReturnType ( DestructorType::* )( PoolType, uint32_t, const HandleType *, const Dispatcher & ) const;
-      using DestroyFunctionPointerType = ReturnType<Dispatcher> ( DestructorType::* )( PoolType, uint32_t, const HandleType *, const Dispatcher & ) const;
 
       PoolFreeShared() = default;
 
-      template <class Dispatcher = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE>
       PoolFreeShared( SharedHandle<PoolType> pool, const Dispatcher & dispatch VULKAN_HPP_DEFAULT_DISPATCHER_ASSIGNMENT )
-        : m_destroy( reinterpret_cast<decltype( m_destroy )>( static_cast<DestroyFunctionPointerType<Dispatcher>>( &DestructorType::free ) ) )
+        : m_destroy( reinterpret_cast<decltype( m_destroy )>( static_cast<DestroyFunctionPointerType>( &DestructorType::free ) ) )
         , m_dispatch( &dispatch )
         , m_pool( std::move( pool ) )
       {
@@ -456,9 +446,9 @@ namespace VULKAN_HPP_NAMESPACE
       }
 
     private:
-      DestroyFunctionPointerType<detail::DispatchLoaderBase> m_destroy  = nullptr;
+      DestroyFunctionPointerType m_destroy  = nullptr;
-      const detail::DispatchLoaderBase *                     m_dispatch = nullptr;
+      const Dispatcher *         m_dispatch = nullptr;
-      SharedHandle<PoolType>                                 m_pool{};
+      SharedHandle<PoolType>     m_pool{};
     };
 
 #  if defined( __GNUC__ ) && !defined( __clang__ ) && !defined( __INTEL_COMPILER )