Introduce raii-compliant handle wrapper classes.

RAII_Samples/PhysicalDeviceMemoryProperties/PhysicalDeviceMemoryProperties.cpp

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+// 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 : PhysicalDeviceMemoryProperties
+//                     Get memory properties per physical device.
+
+#include "../utils/utils.hpp"
+#include "vulkan/vulkan.hpp"
+
+#include <sstream>
+#include <vector>
+
+static char const * AppName    = "PhysicalDeviceMemoryProperties";
+static char const * EngineName = "Vulkan.hpp";
+
+std::string formatSize( vk::DeviceSize size )
+{
+  std::ostringstream oss;
+  if ( size < 1024 )
+  {
+    oss << size << " B";
+  }
+  else if ( size < 1024 * 1024 )
+  {
+    oss << size / 1024.f << " KB";
+  }
+  else if ( size < 1024 * 1024 * 1024 )
+  {
+    oss << size / ( 1024.0f * 1024.0f ) << " MB";
+  }
+  else
+  {
+    oss << size / ( 1024.0f * 1024.0f * 1024.0f ) << " GB";
+  }
+  return oss.str();
+}
+
+int main( int /*argc*/, char ** /*argv*/ )
+{
+  try
+  {
+    std::unique_ptr<vk::ContextHandle<>> contextHandle = std::make_unique<vk::ContextHandle<>>();
+    std::unique_ptr<vk::InstanceHandle<>> instanceHandle =
+      vk::su::makeUniqueInstanceHandle( *contextHandle, AppName, EngineName, {}, {}, VK_API_VERSION_1_1 );
+#if !defined( NDEBUG )
+    std::unique_ptr<vk::DebugUtilsMessengerEXTHandle<>> debugUtilsMessenger =
+      vk::su::makeUniqueDebugUtilsMessengerEXTHandle( *instanceHandle );
+#endif
+
+    // enumerate the physicalDevices
+    std::unique_ptr<vk::PhysicalDeviceHandles<>> physicalDeviceHandles =
+      std::make_unique<vk::PhysicalDeviceHandles<>>( *instanceHandle );
+
+    /* VULKAN_KEY_START */
+
+    for ( size_t i = 0; i < physicalDeviceHandles->size(); i++ )
+    {
+      // some properties are only valid, if a corresponding extension is available!
+      std::vector<vk::ExtensionProperties> extensionProperties =
+        (*physicalDeviceHandles)[i].enumerateDeviceExtensionProperties();
+      bool containsMemoryBudget = vk::su::contains( extensionProperties, "VK_EXT_memory_budget" );
+
+      std::cout << "PhysicalDevice " << i << " :\n";
+      auto memoryProperties2 =
+        (*physicalDeviceHandles)[i]
+          .getMemoryProperties2<vk::PhysicalDeviceMemoryProperties2, vk::PhysicalDeviceMemoryBudgetPropertiesEXT>();
+      vk::PhysicalDeviceMemoryProperties const & memoryProperties =
+        memoryProperties2.get<vk::PhysicalDeviceMemoryProperties2>().memoryProperties;
+      vk::PhysicalDeviceMemoryBudgetPropertiesEXT const & memoryBudgetProperties =
+        memoryProperties2.get<vk::PhysicalDeviceMemoryBudgetPropertiesEXT>();
+      std::cout << "memoryHeapCount: " << memoryProperties.memoryHeapCount << "\n";
+      for ( uint32_t j = 0; j < memoryProperties.memoryHeapCount; j++ )
+      {
+        std::cout << "  " << j << ": size = " << formatSize( memoryProperties.memoryHeaps[j].size )
+                  << ", flags = " << vk::to_string( memoryProperties.memoryHeaps[j].flags ) << "\n";
+        if ( containsMemoryBudget )
+        {
+          std::cout << "     heapBudget = " << formatSize( memoryBudgetProperties.heapBudget[j] )
+                    << ", heapUsage = " << formatSize( memoryBudgetProperties.heapUsage[j] ) << "\n";
+        }
+      }
+      std::cout << "memoryTypeCount: " << memoryProperties.memoryTypeCount << "\n";
+      for ( uint32_t j = 0; j < memoryProperties.memoryTypeCount; j++ )
+      {
+        std::cout << "  " << j << ": heapIndex = " << memoryProperties.memoryTypes[j].heapIndex
+                  << ", flags = " << vk::to_string( memoryProperties.memoryTypes[j].propertyFlags ) << "\n";
+      }
+    }
+
+    /* VULKAN_KEY_END */
+  }
+  catch ( vk::SystemError & err )
+  {
+    std::cout << "vk::SystemError: " << err.what() << std::endl;
+    exit( -1 );
+  }
+  catch ( std::exception & err )
+  {
+    std::cout << "std::exception: " << err.what() << std::endl;
+    exit( -1 );
+  }
+  catch ( ... )
+  {
+    std::cout << "unknown error\n";
+    exit( -1 );
+  }
+  return 0;
+}