/// <summary>
/// Constructs a new SwapchainDescription.
/// </summary>
/// <param name="source">The <see cref="SwapchainSource"/> which will be used as the target of rendering operations.
/// This is a window-system-specific object which differs by platform.</param>
/// <param name="width">The initial width of the Swapchain surface.</param>
/// <param name="height">The initial height of the Swapchain surface.</param>
/// <param name="depthFormat">The optional format of the depth target of the Swapchain's Framebuffer.
/// If non-null, this must be a valid depth Texture format.
/// If null, then no depth target will be created.</param>
/// <param name="syncToVerticalBlank">Indicates whether presentation of the Swapchain will be synchronized to the window
/// system's vertical refresh rate.</param>
public SwapchainDescription(SwapchainSource source, uint width, uint height, PixelFormat?depthFormat, bool syncToVerticalBlank)
{
Source = source;
Width = width;
Height = height;
DepthFormat = depthFormat;
SyncToVerticalBlank = syncToVerticalBlank;
}
public VeldridImGuiWindow(GraphicsDevice gd, ImGuiViewportPtr vp)
{
_gcHandle = GCHandle.Alloc(this);
_gd = gd;
_vp = vp;
SDL_WindowFlags flags = SDL_WindowFlags.Hidden;
if ((vp.Flags & ImGuiViewportFlags.NoTaskBarIcon) != 0)
{
flags |= SDL_WindowFlags.SkipTaskbar;
}
if ((vp.Flags & ImGuiViewportFlags.NoDecoration) != 0)
{
flags |= SDL_WindowFlags.Borderless;
}
else
{
flags |= SDL_WindowFlags.Resizable;
}
if ((vp.Flags & ImGuiViewportFlags.TopMost) != 0)
{
flags |= SDL_WindowFlags.AlwaysOnTop;
}
_window = new Sdl2Window(
"No Title Yet",
(int)vp.Pos.X, (int)vp.Pos.Y,
(int)vp.Size.X, (int)vp.Size.Y,
flags,
false);
_window.Resized += () => _vp.PlatformRequestResize = true;
_window.Moved += p => _vp.PlatformRequestMove = true;
_window.Closed += () => _vp.PlatformRequestClose = true;
SwapchainSource scSource = VeldridStartup.GetSwapchainSource(_window);
SwapchainDescription scDesc = new SwapchainDescription(scSource, (uint)_window.Width, (uint)_window.Height, null, true, false);
_sc = _gd.ResourceFactory.CreateSwapchain(scDesc);
_window.Resized += () => _sc.Resize((uint)_window.Width, (uint)_window.Height);
unsafe
{
ViewportDataPtr data = new ViewportDataPtr(Marshal.AllocHGlobal(Unsafe.SizeOf <ViewportDataPtr>()));
vp.PlatformUserData = new HandleRef(data, (IntPtr)data.NativePtr).Handle;
}
vp.PlatformUserData = (IntPtr)_gcHandle;
}