Vulkan-Hpp/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
{
vk::UniqueInstance instance = vk::su::createInstance( AppName, EngineName );
#if !defined( NDEBUG )
vk::UniqueDebugUtilsMessengerEXT debugUtilsMessenger = vk::su::createDebugUtilsMessenger( instance );
#endif
// enumerate the physicalDevices
std::vector<vk::PhysicalDevice> physicalDevices = instance->enumeratePhysicalDevices();
/* VULKAN_KEY_START */
for ( size_t i = 0; i < physicalDevices.size(); i++ )
{
// some properties are only valid, if a corresponding extension is available!
std::vector<vk::ExtensionProperties> extensionProperties =
physicalDevices[i].enumerateDeviceExtensionProperties();
bool containsMemoryBudget = vk::su::contains( extensionProperties, "VK_EXT_memory_budget" );
std::cout << "PhysicalDevice " << i << "\n";
auto memoryProperties2 =
physicalDevices[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::runtime_error & err )
{
std::cout << "std::runtime_error: " << err.what() << std::endl;
exit( -1 );
}
catch ( ... )
{
std::cout << "unknown error\n";
exit( -1 );
}
return 0;
}