我的 mac 报告了 4 个 Vulkan 队列系列，但参考资料说它有 1 个

Question

我的家用电脑是 2012 年末的 Mac Mini，它配备了第三代英特尔 IvyBridge 处理器（出于某种原因只有 Apple 知道移动型号）。

LunarG SDK 中的 "vulkaninfo.app" 报告集成 GPU 上有 4 个队列系列，但 public information 显示它应该只有 1 个。发生了什么？


VkQueueFamilyProperties[0]:
===========================
    queueFlags         = GRAPHICS | COMPUTE | TRANSFER
    queueCount         = 1
    timestampValidBits = 64
    minImageTransferGranularity = (1, 1, 1)
    present support    = true

VkQueueFamilyProperties[1]:
===========================
    queueFlags         = GRAPHICS | COMPUTE | TRANSFER
    queueCount         = 1
    timestampValidBits = 64
    minImageTransferGranularity = (1, 1, 1)
    present support    = true

VkQueueFamilyProperties[2]:
===========================
    queueFlags         = GRAPHICS | COMPUTE | TRANSFER
    queueCount         = 1
    timestampValidBits = 64
    minImageTransferGranularity = (1, 1, 1)
    present support    = true

VkQueueFamilyProperties[3]:
===========================
    queueFlags         = GRAPHICS | COMPUTE | TRANSFER
    queueCount         = 1
    timestampValidBits = 64
    minImageTransferGranularity = (1, 1, 1)
    present support    = true

Answer 1

在 macOS 中，Metal Devices 中没有队列计数或队列系列计数（截至 2019 年 7 月），因此可以创建 1 个或任意数量的队列并充分利用设备。

然而，如GitHub issue, some programs with hardwired assumptions crashes when there's only 1 queue family, so they made MoltenVK report 4 queue families to fix it (see pull request 450中所述。

我的 mac 报告了 4 个 Vulkan 队列系列，但参考资料说它有 1 个

My mac reports 4 Vulkan queue families but reference says it has 1

macos

vulkan

moltenvk