Corrected functions dealing with StructureChains. (#253)

+ adjusted readme.md accordingly
+ added (a first!) test project

tests/StructureChain/CMakeLists.txt

@@ -0,0 +1,35 @@
+# Copyright(c) 2018, 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(StructureChain)
+
+set(HEADERS
+)
+
+set(SOURCES
+  StructureChain.cpp
+)
+
+source_group(headers FILES ${HEADERS})
+source_group(sources FILES ${SOURCES})
+
+add_executable(StructureChain
+  ${HEADERS}
+  ${SOURCES}
+)
+
+set_target_properties(StructureChain PROPERTIES FOLDER "Tests")
+target_link_libraries(StructureChain "$ENV{VK_SDK_PATH}/Lib/vulkan-1.lib")

tests/StructureChain/StructureChain.cpp

@@ -0,0 +1,72 @@
+// Copyright(c) 2018, 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 Tests : StructureChain
+//                   Compile-test for StructureChains
+
+#include "vulkan/vulkan.hpp"
+#include <iostream>
+
+static char const* AppName = "StructureChain";
+static char const* EngineName = "Vulkan.hpp";
+
+#if defined(_MSC_VER)
+#pragma warning( disable : 4189 )
+#elif defined(__GNUC__)
+#pragma GCC diagnostic ignored "-Wunused-variable"
+#else
+// unknow compiler... just ignore the warnings for yourselves ;)
+#endif
+
+int main(int /*argc*/, char * /*argv[]*/)
+{
+  try
+  {
+    vk::ApplicationInfo appInfo(AppName, 1, EngineName, 1, VK_API_VERSION_1_1);
+    vk::UniqueInstance instance = vk::createInstanceUnique(vk::InstanceCreateInfo({}, &appInfo));
+    std::vector<vk::PhysicalDevice> physicalDevices = instance->enumeratePhysicalDevices();
+
+    vk::PhysicalDevice & pd = physicalDevices[0];
+
+    // simple call, passing structures in
+    vk::PhysicalDeviceFeatures2 pdf;
+    pd.getFeatures2(&pdf);
+
+    vk::StructureChain<vk::PhysicalDeviceFeatures2, vk::PhysicalDeviceVariablePointerFeatures> z;
+
+    // simple calls, getting structure back
+    vk::PhysicalDeviceFeatures2 a = pd.getFeatures2();
+    vk::PhysicalDeviceFeatures2 b = pd.getFeatures2(vk::DispatchLoaderStatic());
+    
+    // complex calls, getting StructureChain back
+    auto c = pd.getFeatures2<vk::PhysicalDeviceFeatures2, vk::PhysicalDeviceVariablePointerFeatures>();
+    vk::PhysicalDeviceFeatures2 & c0 = c.get<vk::PhysicalDeviceFeatures2>();
+    vk::PhysicalDeviceVariablePointerFeatures & c1 = c.get<vk::PhysicalDeviceVariablePointerFeatures>();
+    
+    auto d = pd.getFeatures2<vk::PhysicalDeviceFeatures2, vk::PhysicalDeviceVariablePointerFeatures>(vk::DispatchLoaderStatic());
+    vk::PhysicalDeviceFeatures2 & d0 = d.get<vk::PhysicalDeviceFeatures2>();
+    vk::PhysicalDeviceVariablePointerFeatures & d1 = d.get<vk::PhysicalDeviceVariablePointerFeatures>();
+  }
+  catch (vk::SystemError err)
+  {
+    std::cout << "vk::SystemError: " << err.what() << std::endl;
+    exit(-1);
+  }
+  catch (...)
+  {
+    std::cout << "unknown error\n";
+    exit(-1);
+  }
+  return 0;
+}