小编Cpp*_*Lee的帖子

我编写了以下代码来测试最大逻辑器件编号.

#include "vulkan/vulkan.hpp"
#include <cassert>
#include <vector>
#include <iostream>

int main() {

    std::vector<vk::Instance> instances;
    std::vector<vk::Device>   devices;

    try {

        for( ; true; ) {

            vk::InstanceCreateInfo instanceInfo {};
            instances.push_back( vk::createInstance( instanceInfo ) );

            auto physicalDevices = instances.back().enumeratePhysicalDevices();
            if( 0 == physicalDevices.size() )
                return 0;

            vk::DeviceQueueCreateInfo deviceQueueCreateInfo {};
            deviceQueueCreateInfo.queueFamilyIndex = 0;
            deviceQueueCreateInfo.queueCount = 1;

            vk::DeviceCreateInfo deviceCreateInfo {};
            deviceCreateInfo.queueCreateInfoCount = 1;
            deviceCreateInfo.pQueueCreateInfos = &deviceQueueCreateInfo;
            auto device = physicalDevices.front().createDevice( deviceCreateInfo );
            if( !device ) {
                throw 0;
            }
            devices.push_back( device );
        }
    }
    catch( std::system_error …

我正在使用ID3D12Resource::Map方法来更新GPU资源.这是最有效的方式吗？有哪些替代方案？