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);
}
}
}
/// <summary>
/// Initializes the physical device.
/// </summary>
public override void Initialize(ISurface surface)
{
base.Initialize(surface);
// - Get the vulkan library
var library = Library as VulkanLibrary;
// - Makes a new drawing surface
DrawingSurface = surface.CreateVKSurface(library.Handle);
// - Gets all devices
var devices = library.Handle.EnumeratePhysicalDevices();
// - Filter all non graphic devices
var suitableDevices = FilterSuitableDevices(devices, DrawingSurface);
// - Order devices by priority (performance)
var orderedDevices = OrderDeviceBySuitability(suitableDevices);
// - Takes the first suitable device
Handle = orderedDevices.First();
}
private bool IsSuitableDevice(PhysicalDevice device)
{
return(device.EnumerateDeviceExtensionProperties(null).Any(extension => extension.ExtensionName == KhrSwapchain.ExtensionName) &&
FindQueueFamilies(device).IsComplete);
}
private void PickPhysicalDevice()
{
var availableDevices = this.instance.EnumeratePhysicalDevices();
this.physicalDevice = availableDevices.First(IsSuitableDevice);
}
internal DisplayMode(Interop.DisplayMode handle, PhysicalDevice parent, CommandCache commandCache)
{
this.handle = handle;
this.parent = parent;
this.commandCache = commandCache;
}
