Add samples InstanceExtensionProperties, InstanceLayerExtensionProperties, InstanceLayerProperties, MultipleSets (#320)

+ slightly adjust some other files.

samples/InstanceLayerProperties/InstanceLayerProperties.cpp

@@ -0,0 +1,73 @@
+// Copyright(c) 2019, 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 : InstanceLayerProperties
+//                     Get global layer properties to know what layers are available to enable at CreateInstance time.
+
+
+#include "vulkan/vulkan.hpp"
+#include <iostream>
+#include <sstream>
+#include <vector>
+
+static char const* AppName = "InstanceLayerProperties";
+static char const* EngineName = "Vulkan.hpp";
+
+void extract_version(uint32_t version, uint32_t &major, uint32_t &minor, uint32_t &patch) {
+  major = version >> 22;
+  minor = (version >> 12) & 0x3ff;
+  patch = version & 0xfff;
+}
+
+int main(int /*argc*/, char ** /*argv*/)
+{
+  try
+  {
+    /* VULKAN_KEY_START */
+
+    std::vector<vk::LayerProperties> layerProperties = vk::enumerateInstanceLayerProperties();
+
+    std::cout << "Instance Layers:" << std::endl;
+    if (layerProperties.empty())
+    {
+      std::cout << "Set the environment variable VK_LAYER_PATH to point to the location of your layers" << std::endl;
+    }
+    for (auto const& lp : layerProperties)
+    {
+      std::cout << lp.layerName << ":" << std::endl;
+      std::cout << "\tVersion: " << lp.implementationVersion << std::endl;
+      std::cout << "\tAPI Version: (" << (lp.specVersion >> 22) << "." << ((lp.specVersion >> 12) & 0x03FF) << "." << (lp.specVersion & 0xFFF) << ")" << std::endl;
+      std::cout << "\tDescription: " << lp.description << std::endl;
+      std::cout << std::endl;
+    }
+
+    /* VULKAN_KEY_END */
+  }
+  catch (vk::SystemError err)
+  {
+    std::cout << "vk::SystemError: " << err.what() << std::endl;
+    exit(-1);
+  }
+  catch (std::runtime_error err)
+  {
+    std::cout << "std::runtime_error: " << err.what() << std::endl;
+    exit(-1);
+  }
+  catch (...)
+  {
+    std::cout << "unknown error\n";
+    exit(-1);
+  }
+  return 0;
+}