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ページの作成:「.NET for Android（旧：Xamarin.Android）でVulkanを動かすのにSurfaceViewのANativeWindowを取得する必要がある。.NETだとANativeWindow_fromSurface…」
.NET for Android（旧：Xamarin.Android）で[[Vulkan]]を動かすのにSurfaceViewのANativeWindowを取得する必要がある。.NETだとANativeWindow_fromSurfaceをP/Invokeで簡単に呼び出せるのが便利。
<source lnag="csharp">
[DllImport("android", CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr ANativeWindow_fromSurface(IntPtr env, IntPtr surface);
public static ANativeWindowFromSurfaceView(SurfaceView surfaceView) {
Surface surface = surfaceView.Holder.Surface;
IntPtr surfacePtr = JNIEnv.ToLocalJniHandle(surface);
IntPtr aNativeWindow = ANativeWindow_fromSurface(JNIEnv.Handle, surfacePtr);
return aNativeWindow;
}
</source>
[[category: .NET for Android]]
<source lnag="csharp">
[DllImport("android", CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr ANativeWindow_fromSurface(IntPtr env, IntPtr surface);
public static ANativeWindowFromSurfaceView(SurfaceView surfaceView) {
Surface surface = surfaceView.Holder.Surface;
IntPtr surfacePtr = JNIEnv.ToLocalJniHandle(surface);
IntPtr aNativeWindow = ANativeWindow_fromSurface(JNIEnv.Handle, surfacePtr);
return aNativeWindow;
}
</source>
[[category: .NET for Android]]
