Method SelectPhysicalDevice

src/VulkanSample.cpp:562–609

}

VkPhysicalDevice VulkanUsage::SelectPhysicalDevice(const GPUSelection& GPUSelection) const
{
    uint32_t deviceCount = 0;
    ERR_GUARD_VULKAN(vkEnumeratePhysicalDevices(g_hVulkanInstance, &deviceCount, nullptr));
    std::vector<VkPhysicalDevice> physicalDevices(deviceCount);
    if(deviceCount > 0)
    {
        ERR_GUARD_VULKAN(vkEnumeratePhysicalDevices(g_hVulkanInstance, &deviceCount, physicalDevices.data()));
    }

    if(GPUSelection.Index != UINT32_MAX)
    {
        // Cannot specify both index and name.
        if(!GPUSelection.Substring.empty())
        {
            return VK_NULL_HANDLE;
        }

        return GPUSelection.Index < deviceCount ? physicalDevices[GPUSelection.Index] : VK_NULL_HANDLE;
    }

    if(!GPUSelection.Substring.empty())
    {
        VkPhysicalDevice result = VK_NULL_HANDLE;
        std::wstring name;
        for(uint32_t i = 0; i < deviceCount; ++i)
        {
            VkPhysicalDeviceProperties props = {};
            vkGetPhysicalDeviceProperties(physicalDevices[i], &props);
            if(ConvertCharsToUnicode(&name, props.deviceName, strlen(props.deviceName), CP_UTF8) &&
                StrStrI(name.c_str(), GPUSelection.Substring.c_str()))
            {
                // Second matching device found - error.
                if(result != VK_NULL_HANDLE)
                {
                    return VK_NULL_HANDLE;
                }
                // First matching device found.
                result = physicalDevices[i];
            }
        }
        // Found or not, return it.
        return result;
    }

    // Select first one.
    return deviceCount > 0 ? physicalDevices[0] : VK_NULL_HANDLE;
}

void VulkanUsage::RegisterDebugCallbacks()
{