private unsafe QueueFamilyIndices FindQueueFamilies(PhysicalDevice device)
{
var indices = new QueueFamilyIndices();
uint queueFamilyCount = 0;
_vk.GetPhysicalDeviceQueueFamilyProperties(device, &queueFamilyCount, (QueueFamilyProperties *)null);
QueueFamilyProperties *queueFamilies = stackalloc QueueFamilyProperties[(int)queueFamilyCount];
_vk.GetPhysicalDeviceQueueFamilyProperties(device, &queueFamilyCount, queueFamilies);
for (uint i = 0; i < queueFamilyCount; i++)
{
QueueFamilyProperties queueFamily = queueFamilies[i];
if (queueFamily.QueueFlags.HasFlag(QueueFlags.QueueGraphicsBit))
{
indices.GraphicsFamily = i;
}
_vkSurface.GetPhysicalDeviceSurfaceSupport(device, i, _surface, out Bool32 presentSupport);
if (presentSupport == Vk.True)
{
indices.PresentFamily = i;
}
if (indices.IsComplete)
{
break;
}
}
return(indices);
}
/// <summary>
/// Reports properties of the queues of the specified physical device.
/// </summary>
public QueueFamilyProperties[] GetQueueFamilyProperties()
{
unsafe
{
try
{
QueueFamilyProperties[] result = default(QueueFamilyProperties[]);
uint queueFamilyPropertyCount;
QueueFamilyProperties *marshalledQueueFamilyProperties = null;
Interop.Commands.vkGetPhysicalDeviceQueueFamilyProperties(this.handle, &queueFamilyPropertyCount, null);
marshalledQueueFamilyProperties = (QueueFamilyProperties *)Interop.HeapUtil.Allocate <QueueFamilyProperties>((uint)queueFamilyPropertyCount);
Interop.Commands.vkGetPhysicalDeviceQueueFamilyProperties(this.handle, &queueFamilyPropertyCount, marshalledQueueFamilyProperties);
result = new QueueFamilyProperties[(uint)queueFamilyPropertyCount];
for (int index = 0; index < (uint)queueFamilyPropertyCount; index++)
{
result[index] = marshalledQueueFamilyProperties[index];
}
return(result);
}
finally
{
Interop.HeapUtil.FreeLog();
}
}
}
public static extern unsafe void vkGetPhysicalDeviceQueueFamilyProperties(IntPtr physicalDevice, uint *pQueueFamilyPropertyCount, QueueFamilyProperties *pQueueFamilyProperties);
internal static unsafe extern void vkGetPhysicalDeviceQueueFamilyProperties(PhysicalDevice physicalDevice, out UInt32 *QueueFamilyPropertyCount, QueueFamilyProperties *QueueFamilyProperties);
internal static unsafe extern void vkGetPhysicalDeviceQueueFamilyProperties(IntPtr physicalDevice, UInt32 *pQueueFamilyPropertyCount, QueueFamilyProperties *pQueueFamilyProperties);
