/// <summary>
/// This method is used to create all uce resources either on Startup or session connect
/// </summary>
internal virtual void CreateUCEResources(DUCE.Channel channel, DUCE.Channel outOfBandChannel)
{
Debug.Assert(channel != null);
Debug.Assert(!_contentRoot.IsOnChannel(channel));
Debug.Assert(outOfBandChannel != null);
Debug.Assert(!_contentRoot.IsOnChannel(outOfBandChannel));
//
// Create root visual on the current channel and send
// this command out of band to ensure that composition node is
// created by the time this visual target is available for hosting
// and to avoid life-time issues when we are working with this node
// from the different channels.
//
bool resourceCreated = _contentRoot.CreateOrAddRefOnChannel(this, outOfBandChannel, s_contentRootType);
Debug.Assert(resourceCreated);
_contentRoot.DuplicateHandle(outOfBandChannel, channel);
outOfBandChannel.CloseBatch();
outOfBandChannel.Commit();
}
static internal void Render(
IntPtr pRenderTarget,
DUCE.Channel channel,
Visual visual,
int width,
int height,
double dpiX,
double dpiY,
Matrix worldTransform,
Rect windowClip
)
{
DUCE.Resource target =
new DUCE.Resource();
DUCE.Resource root =
new DUCE.Resource();
DUCE.ResourceHandle targetHandle = DUCE.ResourceHandle.Null;
DUCE.ResourceHandle rootHandle = DUCE.ResourceHandle.Null;
Matrix deviceTransform = new Matrix(
dpiX * (1.0 / 96.0), 0,
0, dpiY * (1.0 / 96.0),
0, 0);
deviceTransform = worldTransform * deviceTransform;
MatrixTransform mtDeviceTransform = new MatrixTransform(deviceTransform);
DUCE.ResourceHandle deviceTransformHandle =
((DUCE.IResource)mtDeviceTransform).AddRefOnChannel(channel);
try
{
// ------------------------------------------------------------
// Create the composition target and root visual resources.
target.CreateOrAddRefOnChannel(target, channel, DUCE.ResourceType.TYPE_GENERICRENDERTARGET);
targetHandle = target.Handle;
DUCE.CompositionTarget.PrintInitialize(
targetHandle,
pRenderTarget,
width,
height,
channel);
root.CreateOrAddRefOnChannel(root, channel, DUCE.ResourceType.TYPE_VISUAL);
rootHandle = root.Handle;
DUCE.CompositionNode.SetTransform(
rootHandle,
deviceTransformHandle,
channel);
DUCE.CompositionTarget.SetRoot(
targetHandle,
rootHandle,
channel);
channel.CloseBatch();
channel.Commit();
// ------------------------------------------------------------
// Render the freshly created target.
RenderContext renderContext = new RenderContext();
renderContext.Initialize(channel, rootHandle);
visual.Precompute();
visual.Render(renderContext, 0);
// ------------------------------------------------------------
// Flush the channel and present the composition target.
channel.CloseBatch();
channel.Commit();
channel.Present();
MediaContext mediaContext = MediaContext.CurrentMediaContext;
mediaContext.NotifySyncChannelMessage(channel);
}
finally
{
// ------------------------------------------------------------
// Clean up and release the root visual.
if (!rootHandle.IsNull)
{
DUCE.CompositionNode.RemoveAllChildren(
rootHandle,
channel);
((DUCE.IResource)visual).ReleaseOnChannel(channel);
root.ReleaseOnChannel(channel);
}
// ------------------------------------------------------------
// Release the world transform.
if (!deviceTransformHandle.IsNull)
{
((DUCE.IResource)mtDeviceTransform).ReleaseOnChannel(channel);
}
// ------------------------------------------------------------
// Clean up and release the composition target.
if (!targetHandle.IsNull)
{
DUCE.CompositionTarget.SetRoot(
targetHandle,
DUCE.ResourceHandle.Null,
channel);
target.ReleaseOnChannel(channel);
}
// ------------------------------------------------------------
// Flush the channel and present the composition target.
channel.CloseBatch();
channel.Commit();
channel.Present();
MediaContext mediaContext = MediaContext.CurrentMediaContext;
mediaContext.NotifySyncChannelMessage(channel);
}
}
internal override void CreateUCEResources(DUCE.Channel channel, DUCE.Channel outOfBandChannel)
{
// create visual target resources
// this forces the creation of the media context if we don't already have one.
base.CreateUCEResources(channel, outOfBandChannel);
Debug.Assert(!_compositionTarget.IsOnChannel(channel));
Debug.Assert(!_compositionTarget.IsOnChannel(outOfBandChannel));
//
// For each HwndTarget we are building some structures in the UCE.
// This includes spinning up a UCE render target. We need to commit the
// batch for those changes right away, since we need to be able to process
// the invalidate packages that we send down on WM_PAINTs. If we don't commit
// right away a WM_PAINT can get fired before we get a chance to commit
// the batch.
//
//
// First we create the composition target, composition context, and the composition root node.
// Note, that composition target will be created out of band because invalidate
// command is also sent out of band and that can occur before current channel is committed.
// We would like to avoid commiting channel here to prevent visual artifacts.
//
bool resourceCreated = _compositionTarget.CreateOrAddRefOnChannel(this, outOfBandChannel, DUCE.ResourceType.TYPE_HWNDRENDERTARGET);
Debug.Assert(resourceCreated);
_compositionTarget.DuplicateHandle(outOfBandChannel, channel);
outOfBandChannel.CloseBatch();
outOfBandChannel.Commit();
DUCE.CompositionTarget.HwndInitialize(
_compositionTarget.GetHandle(channel),
_hWnd,
_hwndClientRectInScreenCoords.right - _hwndClientRectInScreenCoords.left,
_hwndClientRectInScreenCoords.bottom - _hwndClientRectInScreenCoords.top,
MediaSystem.ForceSoftwareRendering,
channel
);
DUCE.ResourceHandle hWorldTransform = ((DUCE.IResource)_worldTransform).AddRefOnChannel(channel);
DUCE.CompositionNode.SetTransform(
_contentRoot.GetHandle(channel),
hWorldTransform,
channel);
DUCE.CompositionTarget.SetClearColor(
_compositionTarget.GetHandle(channel),
_backgroundColor,
channel);
//
// Set initial state on the visual target.
//
Rect clientRect = new Rect(
0,
0,
(float)(Math.Ceiling((double)(_hwndClientRectInScreenCoords.right - _hwndClientRectInScreenCoords.left))),
(float)(Math.Ceiling((double)(_hwndClientRectInScreenCoords.bottom - _hwndClientRectInScreenCoords.top))));
StateChangedCallback(
new object[]
{
HostStateFlags.WorldTransform |
HostStateFlags.ClipBounds,
_worldTransform.Matrix,
clientRect
});
DUCE.CompositionTarget.SetRoot(
_compositionTarget.GetHandle(channel),
_contentRoot.GetHandle(channel),
channel);
// reset the disable cookie when creating the slave resource. This happens when creating the
// managed resource and on handling a connect.
_disableCookie = 0;
//
// Finally, update window settings to reflect the state of this object.
// Because CreateUCEResources is called for each channel, only call
// UpdateWindowSettings on that channel this time.
//
DUCE.ChannelSet channelSet;
channelSet.Channel = channel;
channelSet.OutOfBandChannel = outOfBandChannel;
UpdateWindowSettings(_isRenderTargetEnabled, channelSet);
}