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

README.md

@@ -444,6 +444,9 @@ Creating a full featured ```DispatchLoaderDynamic``` is a two- to three-step pro
 ```
 After the second step above, the dispatcher is fully functional. Adding the third step can potentially result in more efficient code.
 
+In some cases the storage for the DispatchLoaderDynamic should be embedded in a DLL. For those cases you need to define ```VULKAN_HPP_STORAGE_SHARED``` to tell Vulkan-Hpp that the storage resides in a DLL. When compiling the DLL with the storage it is also required to define ```VULKAN_HPP_STORAGE_SHARED_EXPORT``` to export the required symbols.
+
+
 ### Samples and Tests
 
 When you configure your project using CMake, you can enable SAMPLES_BUILD to add some sample projects to your solution. Most of them are ports from the LunarG samples, but there are some more, like CreateDebugUtilsMessenger, InstanceVersion, PhysicalDeviceDisplayProperties, PhysicalDeviceExtensions, PhysicalDeviceFeatures, PhysicalDeviceGroups, PhysicalDeviceMemoryProperties, PhysicalDeviceProperties, PhysicalDeviceQueueFamilyProperties, and RayTracing. All those samples should just compile and run.

VulkanHppGenerator.cpp

@@ -1717,11 +1717,21 @@ void VulkanHppGenerator::appendDispatchLoaderDefault( std::string & str )
 # endif
 #endif
 
+#if defined(_WIN32) && defined(VULKAN_HPP_STORAGE_SHARED)
+#  ifdef VULKAN_HPP_STORAGE_SHARED_EXPORT
+#    define VULKAN_HPP_STORAGE_API __declspec( dllexport )
+#  else
+#    define VULKAN_HPP_STORAGE_API __declspec( dllimport )
+#  endif
+#else
+#  define VULKAN_HPP_STORAGE_API
+#endif
+
 #if !defined(VULKAN_HPP_DEFAULT_DISPATCHER)
 # if VULKAN_HPP_DISPATCH_LOADER_DYNAMIC == 1
 #  define VULKAN_HPP_DEFAULT_DISPATCHER ::VULKAN_HPP_NAMESPACE::defaultDispatchLoaderDynamic
-#  define VULKAN_HPP_DEFAULT_DISPATCH_LOADER_DYNAMIC_STORAGE namespace VULKAN_HPP_NAMESPACE { DispatchLoaderDynamic defaultDispatchLoaderDynamic; }
+#  define VULKAN_HPP_DEFAULT_DISPATCH_LOADER_DYNAMIC_STORAGE namespace VULKAN_HPP_NAMESPACE { VULKAN_HPP_STORAGE_API DispatchLoaderDynamic defaultDispatchLoaderDynamic; }
-  extern DispatchLoaderDynamic defaultDispatchLoaderDynamic;
+  extern VULKAN_HPP_STORAGE_API DispatchLoaderDynamic defaultDispatchLoaderDynamic;
 # else
 #  define VULKAN_HPP_DEFAULT_DISPATCHER ::VULKAN_HPP_NAMESPACE::DispatchLoaderStatic()
 #  define VULKAN_HPP_DEFAULT_DISPATCH_LOADER_DYNAMIC_STORAGE

tests/DispatchLoaderDynamicSharedLibrary/CMakeLists.txt

@@ -0,0 +1,40 @@
+# 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.
+
+cmake_minimum_required(VERSION 3.2)
+
+project(DispatchLoaderDynamicSharedLibrary)
+
+set(HEADERS
+)
+
+set(SOURCES
+  DispatchLoaderDynamicSharedLibrary.cpp
+)
+
+source_group(headers FILES ${HEADERS})
+source_group(sources FILES ${SOURCES})
+
+add_library(DispatchLoaderDynamicSharedLibrary SHARED
+  ${HEADERS}
+  ${SOURCES}
+)
+
+target_compile_definitions(DispatchLoaderDynamicSharedLibrary PRIVATE VULKAN_HPP_DISPATCH_LOADER_DYNAMIC=1 VULKAN_HPP_STORAGE_SHARED VULKAN_HPP_STORAGE_SHARED_EXPORT )
+
+if (UNIX)
+  target_link_libraries(DispatchLoaderDynamicSharedLibrary "-ldl")
+endif()
+
+set_target_properties(DispatchLoaderDynamicSharedLibrary PROPERTIES FOLDER "Tests")

tests/DispatchLoaderDynamicSharedLibrary/DispatchLoaderDynamicSharedLibrary.cpp

@@ -0,0 +1,20 @@
+// 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"
+
+VULKAN_HPP_DEFAULT_DISPATCH_LOADER_DYNAMIC_STORAGE

tests/DispatchLoaderDynamicSharedLibraryClient/CMakeLists.txt

@@ -0,0 +1,42 @@
+# 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.
+
+cmake_minimum_required(VERSION 3.2)
+
+project(DispatchLoaderDynamicSharedLibraryClient)
+
+set(HEADERS
+)
+
+set(SOURCES
+  DispatchLoaderDynamicSharedLibraryClient.cpp
+)
+
+source_group(headers FILES ${HEADERS})
+source_group(sources FILES ${SOURCES})
+
+add_executable(DispatchLoaderDynamicSharedLibraryClient
+  ${HEADERS}
+  ${SOURCES}
+)
+
+target_compile_definitions(DispatchLoaderDynamicSharedLibraryClient PRIVATE VULKAN_HPP_DISPATCH_LOADER_DYNAMIC=1 VULKAN_HPP_STORAGE_SHARED)
+
+target_link_libraries(DispatchLoaderDynamicSharedLibraryClient DispatchLoaderDynamicSharedLibrary)
+
+if (UNIX)
+  target_link_libraries(DispatchLoaderDynamicSharedLibraryClient "-ldl")
+endif()
+
+set_target_properties(DispatchLoaderDynamicSharedLibraryClient PROPERTIES FOLDER "Tests")

tests/DispatchLoaderDynamicSharedLibraryClient/DispatchLoaderDynamicSharedLibraryClient.cpp

@@ -0,0 +1,59 @@
+// 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;
+}

vulkan/vulkan.hpp

@@ -4595,15 +4595,25 @@ namespace VULKAN_HPP_NAMESPACE
 #  endif
 #endif
 
+#if defined( _WIN32 ) && defined( VULKAN_HPP_STORAGE_SHARED )
+#  ifdef VULKAN_HPP_STORAGE_SHARED_EXPORT
+#    define VULKAN_HPP_STORAGE_API __declspec( dllexport )
+#  else
+#    define VULKAN_HPP_STORAGE_API __declspec( dllimport )
+#  endif
+#else
+#  define VULKAN_HPP_STORAGE_API
+#endif
+
 #if !defined( VULKAN_HPP_DEFAULT_DISPATCHER )
 #  if VULKAN_HPP_DISPATCH_LOADER_DYNAMIC == 1
 #    define VULKAN_HPP_DEFAULT_DISPATCHER ::VULKAN_HPP_NAMESPACE::defaultDispatchLoaderDynamic
 #    define VULKAN_HPP_DEFAULT_DISPATCH_LOADER_DYNAMIC_STORAGE                     \
       namespace VULKAN_HPP_NAMESPACE                                               \
       {                                                                            \
-        DispatchLoaderDynamic defaultDispatchLoaderDynamic;    \
+        VULKAN_HPP_STORAGE_API DispatchLoaderDynamic defaultDispatchLoaderDynamic; \
       }
-  extern DispatchLoaderDynamic defaultDispatchLoaderDynamic;
+  extern VULKAN_HPP_STORAGE_API DispatchLoaderDynamic defaultDispatchLoaderDynamic;
 #  else
 #    define VULKAN_HPP_DEFAULT_DISPATCHER ::VULKAN_HPP_NAMESPACE::DispatchLoaderStatic()
 #    define VULKAN_HPP_DEFAULT_DISPATCH_LOADER_DYNAMIC_STORAGE