find_queue_families()

QueueFamilyIndices MayaFlux::Core::VKDevice::find_queue_families ( vk::PhysicalDevice  device )

staticprivate

Find queue families on the given physical device.

Parameters

device

Physical device to query

Returns

QueueFamilyIndices with found queue family indices

Definition at line 558 of file VKDevice.cpp.

{
    QueueFamilyIndices indices;
    auto queue_families = device.getQueueFamilyProperties();
 
    int i = 0;
    for (const auto& queue_family : queue_families) {
        if (queue_family.queueCount > 0 && queue_family.queueFlags & vk::QueueFlagBits::eGraphics) {
            indices.graphics_family = i;
        }
 
        if (queue_family.queueCount > 0 && queue_family.queueFlags & vk::QueueFlagBits::eCompute && !(queue_family.queueFlags & vk::QueueFlagBits::eGraphics)) {
            indices.compute_family = i;
        }
 
        if (queue_family.queueCount > 0 && queue_family.queueFlags & vk::QueueFlagBits::eTransfer && !(queue_family.queueFlags & vk::QueueFlagBits::eGraphics) && !(queue_family.queueFlags & vk::QueueFlagBits::eCompute)) {
            indices.transfer_family = i;
        }
 
        i++;
    }
 
    if (indices.graphics_family.has_value()) {
        if (!indices.compute_family.has_value()) {
            indices.compute_family = indices.graphics_family;
        }
        if (!indices.transfer_family.has_value()) {
            indices.transfer_family = indices.graphics_family;
        }
    }
 
    return indices;
}

References MayaFlux::Core::QueueFamilyIndices::compute_family, device, MayaFlux::Core::QueueFamilyIndices::graphics_family, and MayaFlux::Core::QueueFamilyIndices::transfer_family.

Referenced by pick_physical_device().

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