/// <summary>
/// Set the power state of a display.
/// </summary>
/// <param name="device">The display whose power state is modified.</param>
/// <param name="display">A logical device associated with <paramref name="display"/>.</param>
/// <param name="displayPowerInfo">Specifies the new power state of <paramref name="display"/>.</param>
/// <exception cref="VulkanException">Vulkan returns an error code.</exception>
public static void DisplayPowerControlExt(this Device device, DisplayKhr display,
DisplayPowerInfoExt displayPowerInfo)
{
displayPowerInfo.Prepare();
Result result = vkDisplayPowerControlEXT(device)(device, display, &displayPowerInfo);
VulkanException.ThrowForInvalidResult(result);
}
/// <summary>
/// Signal a fence when a display event occurs.
/// </summary>
/// <param name="device">A logical device associated with <paramref name="display"/>.</param>
/// <param name="display">The display on which the event may occur.</param>
/// <param name="displayEventInfo">
/// The structure describing the event of interest to the application.
/// </param>
/// <param name="allocator">Controls host memory allocation.</param>
/// <returns>The resulting fence object.</returns>
/// <exception cref="VulkanException">Vulkan returns an error code.</exception>
public static Fence RegisterDisplayEventExt(this Device device, DisplayKhr display, DisplayEventInfoExt displayEventInfo,
AllocationCallbacks? allocator = null)
{
displayEventInfo.Prepare();
AllocationCallbacks.Native* nativeAllocator = null;
if (allocator.HasValue)
{
nativeAllocator = (AllocationCallbacks.Native*)Interop.Alloc<AllocationCallbacks.Native>();
allocator.Value.ToNative(nativeAllocator);
}
long handle;
Result result = vkRegisterDisplayEventEXT(device)(device, display, &displayEventInfo, nativeAllocator, &handle);
Interop.Free(nativeAllocator);
VulkanException.ThrowForInvalidResult(result);
return new Fence(device, ref allocator, handle);
}
internal static unsafe extern Result vkCreateDisplayModeKHR(PhysicalDevice physicalDevice, DisplayKhr display, DisplayModeCreateInfoKhr *CreateInfo, AllocationCallbacks *Allocator, out IntPtr pMode);
internal static unsafe extern Result vkGetDisplayModePropertiesKHR(PhysicalDevice physicalDevice, DisplayKhr display, out UInt32 *PropertyCount, DisplayModePropertiesKhr *Properties);
private static TDelegate GetProc <TDelegate>(DisplayKhr display, string name) where TDelegate : class => display.Parent.Parent.GetProc <TDelegate>(name);
private static vkReleaseDisplayEXTDelegate vkReleaseDisplayEXT(DisplayKhr display) => GetProc <vkReleaseDisplayEXTDelegate>(display, nameof(vkReleaseDisplayEXT));
private static vkAcquireXlibDisplayEXTDelegate vkAcquireXlibDisplayEXT(DisplayKhr display) => GetProc <vkAcquireXlibDisplayEXTDelegate>(display, nameof(vkAcquireXlibDisplayEXT));
/// <summary>
/// Release access to an acquired DisplayKhr.
/// </summary>
/// <param name="display">The display to release control of.</param>
/// <exception cref="VulkanException">Vulkan returns an error code.</exception>
public static void ReleaseDisplayExt(this DisplayKhr display)
{
Result result = vkReleaseDisplayEXT(display)(display.Parent, display);
VulkanException.ThrowForInvalidResult(result);
}
/// <summary>
/// Acquire access to a DisplayKhr using Xlib.
/// <para>
/// All permissions necessary to control the display are granted to the Vulkan instance
/// associated with <see cref="PhysicalDevice"/> until the display is released or the X11
/// connection specified by <paramref name="dpy"/> is terminated.
/// </para>
/// <para>
/// Permission to access the display may be temporarily revoked during periods when the X11
/// server from which control was acquired itself looses access to <paramref name="display"/>.
/// </para>
/// <para>
/// During such periods, operations which require access to the display must fail with an
/// approriate error code.
/// </para>
/// <para>
/// If the X11 server associated with <paramref name="dpy"/> does not own <paramref
/// name="display"/>, or if permission to access it has already been acquired by another
/// entity, the call must throw with the error code <see cref="Result.ErrorInitializationFailed"/>.
/// </para>
/// </summary>
/// <param name="display"></param>
/// <param name="dpy"></param>
/// <exception cref="VulkanException">Vulkan returns an error code.</exception>
public static void AcquireXlibDisplayExt(this DisplayKhr display, IntPtr dpy)
{
Result result = vkAcquireXlibDisplayEXT(display)(display.Parent, &dpy, display);
VulkanException.ThrowForInvalidResult(result);
}
