private QueueFamilyIndices FindQueueFamilies(PhysicalDevice device)
{
QueueFamilyIndices indices = new QueueFamilyIndices();
var queueFamilies = device.GetQueueFamilyProperties();
for (uint index = 0; index < queueFamilies.Length && !indices.IsComplete; index++)
{
if (queueFamilies[index].QueueFlags.HasFlag(QueueFlags.Graphics))
{
indices.GraphicsFamily = index;
}
if (device.GetSurfaceSupport(index, this.surface))
{
indices.PresentFamily = index;
}
if (queueFamilies[index].QueueFlags.HasFlag(QueueFlags.Transfer) && !queueFamilies[index].QueueFlags.HasFlag(QueueFlags.Graphics))
{
indices.TransferFamily = index;
}
}
if (!indices.TransferFamily.HasValue)
{
indices.TransferFamily = indices.GraphicsFamily;
}
return(indices);
}
private IEnumerable <uint> GetPresentQueues(SharpVk.PhysicalDevice device, VKSurface surface)
{
// - Gets GPU command queues
var queues = device.GetQueueFamilyProperties();
for (uint i = 0; i < queues.Length; ++i)
{
if (device.GetSurfaceSupport(i, surface.Handle))
{
yield return(i);
}
}
}
private IEnumerable <uint> GetSuitableQueues(SharpVk.PhysicalDevice device, QueueFlags type)
{
// - Gets GPU command queues
var queues = device.GetQueueFamilyProperties();
for (uint i = 0; i < queues.Length; ++i)
{
var queue = queues[i];
if (queue.QueueFlags.HasFlag(type))
{
yield return(i);
}
}
}