public void SetBackBuffer(D3DResourceType backBufferType, IntPtr backBuffer, bool enableSoftwareFallback)
{
SecurityHelper.DemandUnmanagedCode();
WritePreamble();
if (_lockCount == 0)
{
throw new InvalidOperationException(SR.Get(SRID.Image_MustBeLocked));
}
// In case the user passed in something like "(D3DResourceType)-1"
if (backBufferType != D3DResourceType.IDirect3DSurface9)
{
throw new ArgumentOutOfRangeException("backBufferType");
}
// Early-out if the current back buffer equals the new one. If the front buffer
// is not available and software fallback is not enabled, _pUserSurfaceUnsafe
// will be null and this check will fail. We don't want a null backBuffer to
// early-out when the front buffer isn't available.
if (backBuffer != IntPtr.Zero && backBuffer == _pUserSurfaceUnsafe)
{
return;
}
SafeMILHandle newBitmap = null;
uint newPixelWidth = 0;
uint newPixelHeight = 0;
// Create a new CInteropDeviceBitmap. Note that a null backBuffer will result
// in a null _pInteropDeviceBitmap at the end
if (backBuffer != IntPtr.Zero)
{
HRESULT.Check(UnsafeNativeMethods.InteropDeviceBitmap.Create(
backBuffer,
_dpiX,
_dpiY,
++_version,
_availableCallback,
enableSoftwareFallback,
out newBitmap,
out newPixelWidth,
out newPixelHeight
));
}
//
// We need to completely disassociate with the old interop bitmap if it
// exists because it won't be deleted until the composition thread is done
// with it or until the garbage collector runs.
//
if (_pInteropDeviceBitmap != null)
{
// 1. Tell the old bitmap to stop sending front buffer messages because
// our new back buffer may be on a different adapter. Plus, tell the
// bitmap to release the back buffer in case the user wants to delete
// it immediately.
UnsafeNativeMethods.InteropDeviceBitmap.Detach(_pInteropDeviceBitmap);
// 2. If we were waiting for a present, unhook from commit
UnsubscribeFromCommittingBatch();
// 3. We are no longer dirty
_isDirty = false;
// Note: We don't need to do anything to the event because we're under
// the protection of Lock
}
// If anything about the new surface were unacceptible, we would have recieved
// a bad HRESULT from Create() so everything must be good
_pInteropDeviceBitmap = newBitmap;
_pUserSurfaceUnsafe = backBuffer;
_pixelWidth = newPixelWidth;
_pixelHeight = newPixelHeight;
_isSoftwareFallbackEnabled = enableSoftwareFallback;
// AddDirtyRect is usually what triggers Changed, but AddDirtyRect isn't allowed with
// no back buffer so we mark for Changed here
if (_pInteropDeviceBitmap == null)
{
_isChangePending = true;
}
RegisterForAsyncUpdateResource();
_waitingForUpdateResourceBecauseBitmapChanged = true;
// WritePostscript will happen at Unlock
}
public void SetBackBuffer(D3DResourceType backBufferType, IntPtr backBuffer)
{
}
/// <summary>
/// Sets a back buffer source for this D3DImage. See the 2nd overload for details.
/// </summary>
public void SetBackBuffer(D3DResourceType backBufferType, IntPtr backBuffer)
{
SetBackBuffer(backBufferType, backBuffer, false);
}
public void SetBackBuffer(D3DResourceType backBufferType, IntPtr backBuffer)
{
}
