/// <summary>Resizes the scene.</summary>
/// <param name="width">The new width for the scene.</param>
/// <param name="height">The new height for the scene.</param>
/// <exception cref="ArgumentOutOfRangeException">
/// width/height is less than zero.
/// </exception>
/// <exception cref="InvalidOperationException">
/// <see cref="CreateResources" /> has not been called.
/// </exception>
/// <exception cref="ObjectDisposedException">
/// <see cref="Dispose()" /> has been called on this instance.
/// </exception>
/// <exception cref="Microsoft.WindowsAPICodePack.DirectX.DirectXException">
/// An error occured creating device dependent resources.
/// </exception>
public void Resize(int width, int height)
{
MustNotDisposed();
width.MustGreaterThan(0);
height.MustGreaterThan(0);
_device.MustNotNull("CreateResources方法未调用");
// Recreate the render target
CreateTexture(width, height);
using (var surface = _texture.QueryInterface <Surface>())
{
CreateRenderTarget(surface);
}
// Resize our viewport
var viewport = new Viewport();
viewport.Height = (uint)height;
viewport.MaxDepth = 1;
viewport.MinDepth = 0;
viewport.TopLeftX = 0;
viewport.TopLeftY = 0;
viewport.Width = (uint)width;
_device.RS.Viewports = new[] { viewport };
// Destroy and recreate any dependent resources declared in a
// derived class only (i.e don't destroy our resources).
OnFreeResources();
OnCreateResources(_renderTarget);
}
