private void OnLoaded(object sender, RoutedEventArgs e)
{
if (!DesignerProperties.GetIsInDesignMode(new DependencyObject()))
{
Window.GetWindow(this).Closing += (ss, ee) => { mCts?.Cancel(); }
}
;
var ptr = DXInterop.Direct3DCreate9(DXInterop.D3D_SDK_VERSION);
var window = Window.GetWindow(this);
mWndHandle = window is null ? IntPtr.Zero : new WindowInteropHelper(window).Handle;
mHwnd = new HwndSource(0, 0, 0, 0, 0, "Offscreen Window", mWndHandle);
mWindowInfo = Utilities.CreateWindowsWindowInfo(mHwnd.Handle);
mTargetFramerate = FramerateLimit > 0 ? TimeSpan.FromMilliseconds(1000.0d / FramerateLimit) : TimeSpan.Zero;
switch (UpdateStrategy)
{
case UpdateStrategy.WriteableBitmapImage:
mUpdateStrategy = new UpdateStrategyWriteableBitmap();
break;
case UpdateStrategy.D3DImage:
mUpdateStrategy = new UpdateStrategyD3D();
break;
}
mRenderTread = new Thread((object boxedToken) =>
{
InitOpenGLContext();
while (!mCts.IsCancellationRequested)
{
++mFrames;
if (mWasResized)
{
mWasResized = false;
mUpdateStrategy.Resize((int)Math.Round(ActualWidth), (int)Math.Round(ActualHeight));
Dispatcher.Invoke(() => mRenderedImg = mUpdateStrategy.CreateImageSource());
}
var rt = Render();
var sleep = mTargetFramerate - rt;
mAccumulatedDt += rt;
if (FramerateLimit > 0)
{
mAccumulatedDt += sleep;
}
if (mAccumulatedDt >= TimeSpan.FromSeconds(1))
{
mLastFrames = mFrames;
mFrames = 0;
mAccumulatedDt = TimeSpan.Zero;
}
if (FramerateLimit > 0)
{
Thread.Sleep(sleep > TimeSpan.Zero ? sleep : TimeSpan.Zero);
}
Dispatcher.Invoke(() => InvalidateVisual());
}
mRenderTread.Join();
})
{
IsBackground = true
};
mRenderTread.Start(mCts);
}
public void Resize(int width, int height)
{
mGlHandle = IntPtr.Zero;
mDxSharedHandle = IntPtr.Zero;
if (mFbo > -1)
{
gl.DeleteFramebuffer(mFbo);
}
mFbo = -1;
if (mRboDepth > -1)
{
gl.DeleteRenderbuffer(mRboDepth);
}
mRboDepth = -1;
if (mSharedTexture > -1)
{
gl.DeleteTexture(mSharedTexture);
}
mSharedTexture = -1;
if (mSurface != null)
{
mSurface.Dispose();
}
mSurface = null;
if (mDevice != null)
{
mDevice.Dispose();
}
mDevice = null;
mWglInterop = new WGLInterop();
mDevice = new Device(DXInterop.Direct3DCreate9(DXInterop.D3D_SDK_VERSION));
mDevice = new DeviceEx(
new Direct3DEx(),
0,
DeviceType.Hardware,
IntPtr.Zero,
CreateFlags.HardwareVertexProcessing |
CreateFlags.Multithreaded |
CreateFlags.PureDevice,
new PresentParameters()
{
Windowed = true,
SwapEffect = SwapEffect.Discard,
DeviceWindowHandle = IntPtr.Zero,
PresentationInterval = PresentInterval.Default,
BackBufferFormat = Format.Unknown,
BackBufferWidth = width,
BackBufferHeight = height
});
mSurface = Surface.CreateRenderTarget(
mDevice,
width,
height,
Format.A8R8G8B8,
MultisampleType.None,
0,
false,
ref mDxSharedHandle);
mFbo = gl.GenFramebuffer();
mSharedTexture = gl.GenTexture();
mGlHandle = mWglInterop.WglDXOpenDeviceNV(mDevice.NativePointer);
mWglInterop.WglDXSetResourceShareHandleNV(mSurface.NativePointer, mDxSharedHandle);
var genHandle = mWglInterop.WglDXRegisterObjectNV(
mGlHandle,
mSurface.NativePointer,
(uint)mSharedTexture,
(uint)TextureTarget.Texture2D,
WGLInterop.WGL_ACCESS_READ_WRITE_NV);
mGlHandles = new IntPtr[] { genHandle };
gl.BindFramebuffer(FramebufferTarget.Framebuffer, mFbo);
gl.FramebufferTexture2D(
FramebufferTarget.Framebuffer,
FramebufferAttachment.ColorAttachment0,
TextureTarget.Texture2D,
mSharedTexture, 0);
mRboDepth = gl.GenRenderbuffer();
gl.BindRenderbuffer(RenderbufferTarget.Renderbuffer, mRboDepth);
gl.RenderbufferStorage(RenderbufferTarget.Renderbuffer, RenderbufferStorage.DepthComponent24, width, height);
gl.FramebufferRenderbuffer(
FramebufferTarget.Framebuffer,
FramebufferAttachment.DepthAttachment,
RenderbufferTarget.Renderbuffer,
mRboDepth);
gl.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
}