Add defines to put the storage for a DispatchLoaderDynamic in a DLL.

tests/DispatchLoaderDynamicSharedLibraryClient/DispatchLoaderDynamicSharedLibraryClient.cpp

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+// Copyright(c) 2020, NVIDIA CORPORATION. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// VulkanHpp Samples : DispatchLoaderDynamic
+//                     Compile test on DispatchLoaderDynamic functions
+
+#include "vulkan/vulkan.hpp"
+
+#include <iostream>
+#include <map>
+#include <vulkan/vulkan.h>
+
+int main( int /*argc*/, char ** /*argv*/ )
+{
+  try
+  {
+    vk::DynamicLoader         dl;
+    PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr =
+      dl.getProcAddress<PFN_vkGetInstanceProcAddr>( "vkGetInstanceProcAddr" );
+    VULKAN_HPP_DEFAULT_DISPATCHER.init( vkGetInstanceProcAddr );
+
+    vk::Instance instance = vk::createInstance( {}, nullptr );
+
+    // initialize function pointers for instance
+    VULKAN_HPP_DEFAULT_DISPATCHER.init( instance );
+
+    // create a dispatcher, based on additional vkDevice/vkGetDeviceProcAddr
+    std::vector<vk::PhysicalDevice> physicalDevices = instance.enumeratePhysicalDevices();
+    assert( !physicalDevices.empty() );
+
+    vk::Device device = physicalDevices[0].createDevice( {}, nullptr );
+
+    // function pointer specialization for device
+    VULKAN_HPP_DEFAULT_DISPATCHER.init( device );
+  }
+  catch ( vk::SystemError const & err )
+  {
+    std::cout << "vk::SystemError: " << err.what() << std::endl;
+    exit( -1 );
+  }
+  catch ( ... )
+  {
+    std::cout << "unknown error\n";
+    exit( -1 );
+  }
+
+  return 0;
+}