bool Tutorial01::CreateDevice() {
uint32_t num_devices = 0;
if( (vkEnumeratePhysicalDevices( Vulkan.Instance, &num_devices, nullptr ) != VK_SUCCESS) ||
(num_devices == 0) ) {
std::cout << "Error occurred during physical devices enumeration!" << std::endl;
return false;
}
std::vector<VkPhysicalDevice> physical_devices( num_devices );
if( vkEnumeratePhysicalDevices( Vulkan.Instance, &num_devices, physical_devices.data() ) != VK_SUCCESS ) {
std::cout << "Error occurred during physical devices enumeration!" << std::endl;
return false;
}
VkPhysicalDevice selected_physical_device = VK_NULL_HANDLE;
uint32_t selected_queue_family_index = UINT32_MAX;
for( uint32_t i = 0; i < num_devices; ++i ) {
if( CheckPhysicalDeviceProperties( physical_devices[i], selected_queue_family_index ) ) {
selected_physical_device = physical_devices[i];
break;
}
}
if( selected_physical_device == VK_NULL_HANDLE ) {
std::cout << "Could not select physical device based on the chosen properties!" << std::endl;
return false;
}
std::vector<float> queue_priorities = { 1.0f };
VkDeviceQueueCreateInfo queue_create_info = {
VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO, // VkStructureType sType
nullptr, // const void *pNext
0, // VkDeviceQueueCreateFlags flags
selected_queue_family_index, // uint32_t queueFamilyIndex
static_cast<uint32_t>(queue_priorities.size()), // uint32_t queueCount
queue_priorities.data() // const float *pQueuePriorities
};
VkDeviceCreateInfo device_create_info = {
VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO, // VkStructureType sType
nullptr, // const void *pNext
0, // VkDeviceCreateFlags flags
1, // uint32_t queueCreateInfoCount
&queue_create_info, // const VkDeviceQueueCreateInfo *pQueueCreateInfos
0, // uint32_t enabledLayerCount
nullptr, // const char * const *ppEnabledLayerNames
0, // uint32_t enabledExtensionCount
nullptr, // const char * const *ppEnabledExtensionNames
nullptr // const VkPhysicalDeviceFeatures *pEnabledFeatures
};
if( vkCreateDevice( selected_physical_device, &device_create_info, nullptr, &Vulkan.Device ) != VK_SUCCESS ) {
std::cout << "Could not create Vulkan device!" << std::endl;
return false;
}
Vulkan.QueueFamilyIndex = selected_queue_family_index;
return true;
}
bool VulkanCommon::CreateDevice() {
uint32_t num_devices = 0;
if( (vkEnumeratePhysicalDevices( Vulkan.Instance, &num_devices, nullptr ) != VK_SUCCESS) ||
(num_devices == 0) ) {
std::cout << "Error occurred during physical devices enumeration!" << std::endl;
return false;
}
std::vector<VkPhysicalDevice> physical_devices( num_devices );
if( vkEnumeratePhysicalDevices( Vulkan.Instance, &num_devices, &physical_devices[0] ) != VK_SUCCESS ) {
std::cout << "Error occurred during physical devices enumeration!" << std::endl;
return false;
}
uint32_t selected_graphics_queue_family_index = UINT32_MAX;
uint32_t selected_present_queue_family_index = UINT32_MAX;
for( uint32_t i = 0; i < num_devices; ++i ) {
if( CheckPhysicalDeviceProperties( physical_devices[i], selected_graphics_queue_family_index, selected_present_queue_family_index ) ) {
Vulkan.PhysicalDevice = physical_devices[i];
}
}
if( Vulkan.PhysicalDevice == VK_NULL_HANDLE ) {
std::cout << "Could not select physical device based on the chosen properties!" << std::endl;
return false;
}
std::vector<VkDeviceQueueCreateInfo> queue_create_infos;
std::vector<float> queue_priorities = { 1.0f };
queue_create_infos.push_back( {
VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO, // VkStructureType sType
nullptr, // const void *pNext
0, // VkDeviceQueueCreateFlags flags
selected_graphics_queue_family_index, // uint32_t queueFamilyIndex
static_cast<uint32_t>(queue_priorities.size()), // uint32_t queueCount
&queue_priorities[0] // const float *pQueuePriorities
} );
if( selected_graphics_queue_family_index != selected_present_queue_family_index ) {
queue_create_infos.push_back( {
VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO, // VkStructureType sType
nullptr, // const void *pNext
0, // VkDeviceQueueCreateFlags flags
selected_present_queue_family_index, // uint32_t queueFamilyIndex
static_cast<uint32_t>(queue_priorities.size()), // uint32_t queueCount
&queue_priorities[0] // const float *pQueuePriorities
} );
}
std::vector<const char*> extensions = {
VK_KHR_SWAPCHAIN_EXTENSION_NAME
};
VkDeviceCreateInfo device_create_info = {
VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO, // VkStructureType sType
nullptr, // const void *pNext
0, // VkDeviceCreateFlags flags
static_cast<uint32_t>(queue_create_infos.size()), // uint32_t queueCreateInfoCount
&queue_create_infos[0], // const VkDeviceQueueCreateInfo *pQueueCreateInfos
0, // uint32_t enabledLayerCount
nullptr, // const char * const *ppEnabledLayerNames
static_cast<uint32_t>(extensions.size()), // uint32_t enabledExtensionCount
&extensions[0], // const char * const *ppEnabledExtensionNames
nullptr // const VkPhysicalDeviceFeatures *pEnabledFeatures
};
if( vkCreateDevice( Vulkan.PhysicalDevice, &device_create_info, nullptr, &Vulkan.Device ) != VK_SUCCESS ) {
std::cout << "Could not create Vulkan device!" << std::endl;
return false;
}
Vulkan.GraphicsQueue.FamilyIndex = selected_graphics_queue_family_index;
Vulkan.PresentQueue.FamilyIndex = selected_present_queue_family_index;
return true;
}
