Integrating Direct3D with XAML and Windows 8.1 - Direct3D Rendering - page 385

A swap chain that participates within an XAML composition, such as the SwapChainPanel
swap chain, is also known as a composition swap chain. The SwapChainPanel XAML
element is new to Windows 8.1.

This recipe continues from where we left off with Preparing the swap chain for Windows
Store apps .

How to do it…

As with the previous recipe, we will first update the Common.WinRT project to support the
creation of a swap chain for the Windows Store app XAML SwapChainPanel element.
We will then create a simple Hello World sample that demonstrates the integration of
Direct3D into XAML.

1. Let's begin by creating a new abstract class called D3DAppSwapChainPanelTarget

within the Common.WinRT project, descending from the D3DApplicationWinRT
class.
public abstract class D3DAppSwapChainPanelTarget
: D3DApplicationWinRT
{
private SwapChainPanel panel;
private ISwapChainPanelNative nativePanel;
public SwapChainPanel SwapChainPanel {
get { return panel; }
}
public D3DAppSwapChainPanelTarget(SwapChainPanel panel)
{
this.panel = panel;
nativePanel = ToDispose(ComObject.As
<SharpDX.DXGI.ISwapChainPanelNative>(panel));

this.panel.CompositionScaleChanged += (s, args) =>
{
ScaleChanged();
};
this.panel.SizeChanged += (sender, args) =>
{
SizeChanged();
};
}
...
}