private (IRef <Scene> scene, bool updated) UpdateRenderLayersAndConsumeSceneIfNeeded(ref IDrawingContextImpl context,
bool recursiveCall = false)
{
IRef <Scene> sceneRef;
lock (_sceneLock)
sceneRef = _scene?.Clone();
if (sceneRef == null)
{
return(null, false);
}
using (sceneRef)
{
var scene = sceneRef.Item;
if (scene.Generation != _lastSceneId)
{
EnsureDrawingContext(ref context);
Layers.Update(scene, context);
RenderToLayers(scene);
if (DebugFramesPath != null)
{
SaveDebugFrames(scene.Generation);
}
lock (_sceneLock)
_lastSceneId = scene.Generation;
var isUiThread = Dispatcher.UIThread.CheckAccess();
// We have consumed the previously available scene, but there might be some dirty
// rects since the last update. *If* we are on UI thread, we can force immediate scene
// rebuild before rendering anything on-screen
// We are calling the same method recursively here
if (!recursiveCall && isUiThread && NeedsUpdate)
{
UpdateScene();
var(rs, _) = UpdateRenderLayersAndConsumeSceneIfNeeded(ref context, true);
return(rs, true);
}
// We are rendering a new scene version, so it's highly likely
// that there is already a pending update for animations
// So we are scheduling an update call so UI thread could prepare a scene before
// the next render timer tick
if (!recursiveCall && !isUiThread)
{
Dispatcher.UIThread.Post(_updateSceneIfNeededDelegate, DispatcherPriority.Render);
}
// Indicate that we have updated the layers
return(sceneRef.Clone(), true);
}
// Just return scene, layers weren't updated
return(sceneRef.Clone(), false);
}
}
void IRenderLoopTask.Render()
{
using (var scene = _scene?.Clone())
{
Render(scene?.Item);
}
}
/// <summary>
/// Replaces an item in the <see cref="DrawOperations"/> collection.
/// </summary>
/// <param name="index">The operation to be replaced.</param>
/// <param name="operation">The operation to add.</param>
public void ReplaceDrawOperation(int index, IRef <IDrawOperation> operation)
{
EnsureDrawOperationsCreated();
var old = _drawOperations[index];
_drawOperations[index] = operation.Clone();
old.Dispose();
}
/// <summary>
/// Initializes a new instance of the <see cref="ImageNode"/> class.
/// </summary>
/// <param name="transform">The transform.</param>
/// <param name="source">The image to draw.</param>
/// <param name="opacity">The draw opacity.</param>
/// <param name="sourceRect">The source rect.</param>
/// <param name="destRect">The destination rect.</param>
public ImageNode(Matrix transform, IRef <IBitmapImpl> source, double opacity, Rect sourceRect, Rect destRect)
: base(destRect, transform, null)
{
Transform = transform;
Source = source.Clone();
Opacity = opacity;
SourceRect = sourceRect;
DestRect = destRect;
}
public CompositionRenderTarget(EglPlatformOpenGlInterface egl,
IRef <WinUICompositedWindow> window,
IEglWindowGlPlatformSurfaceInfo info)
: base(egl)
{
_egl = egl;
_window = window.Clone();
_info = info;
_window.Item.ResizeIfNeeded(_info.Size);
}
/// <summary>
/// Initializes a new instance of the <see cref="ImageNode"/> class.
/// </summary>
/// <param name="transform">The transform.</param>
/// <param name="source">The image to draw.</param>
/// <param name="opacity">The draw opacity.</param>
/// <param name="sourceRect">The source rect.</param>
/// <param name="destRect">The destination rect.</param>
/// <param name="bitmapInterpolationMode">The bitmap interpolation mode.</param>
public ImageNode(Matrix transform, IRef <IBitmapImpl> source, double opacity, Rect sourceRect, Rect destRect, BitmapInterpolationMode bitmapInterpolationMode)
: base(destRect, transform, null)
{
Transform = transform;
Source = source.Clone();
Opacity = opacity;
SourceRect = sourceRect;
DestRect = destRect;
BitmapInterpolationMode = bitmapInterpolationMode;
SourceVersion = Source.Item.Version;
}
private void Render(bool forceComposite)
{
using (var l = _lock.TryLock())
if (l != null)
{
using (var scene = _scene?.Clone())
{
Render(scene?.Item, forceComposite);
}
}
}
private (IRef <Scene> scene, bool updated) UpdateRenderLayersAndConsumeSceneIfNeeded(ref IDrawingContextImpl context,
bool recursiveCall = false)
{
IRef <Scene> sceneRef;
lock (_sceneLock)
sceneRef = _scene?.Clone();
if (sceneRef == null)
{
return(null, false);
}
using (sceneRef)
{
var scene = sceneRef.Item;
if (scene.Generation != _lastSceneId)
{
EnsureDrawingContext(ref context);
Layers.Update(scene, context);
RenderToLayers(scene);
if (DebugFramesPath != null)
{
SaveDebugFrames(scene.Generation);
}
lock (_sceneLock)
_lastSceneId = scene.Generation;
// We have consumed the previously available scene, but there might be some dirty
// rects since the last update. *If* we are on UI thread, we can force immediate scene
// rebuild before rendering anything on-screen
// We are calling the same method recursively here
if (!recursiveCall && Dispatcher.UIThread.CheckAccess() && NeedsUpdate)
{
UpdateScene();
var(rs, _) = UpdateRenderLayersAndConsumeSceneIfNeeded(ref context, true);
return(rs, true);
}
// Indicate that we have updated the layers
return(sceneRef.Clone(), true);
}
// Just return scene, layers weren't updated
return(sceneRef.Clone(), false);
}
}
/// <summary>
/// Makes a copy of the node
/// </summary>
/// <param name="parent">The new parent node.</param>
/// <returns>A cloned node.</returns>
public VisualNode Clone(IVisualNode parent)
{
return(new VisualNode(Visual, parent)
{
Transform = Transform,
ClipBounds = ClipBounds,
ClipToBounds = ClipToBounds,
GeometryClip = GeometryClip,
_opacity = Opacity,
OpacityMask = OpacityMask,
_drawOperations = _drawOperations,
_drawOperationsRefCounter = _drawOperationsRefCounter?.Clone(),
_drawOperationsCloned = true,
LayerRoot = LayerRoot,
});
}
private void OnRenderLoopTick(object sender, EventArgs e)
{
if (Monitor.TryEnter(_rendering))
{
try
{
if (!_updateQueued && (_dirty == null || _dirty.Count > 0))
{
_updateQueued = true;
_dispatcher.Post(UpdateScene, DispatcherPriority.Render);
}
using (var scene = _scene?.Clone())
{
Render(scene?.Item);
}
}
catch { }
finally
{
Monitor.Exit(_rendering);
}
}
}
/// <summary>
/// Adds an operation to the <see cref="DrawOperations"/> collection.
/// </summary>
/// <param name="operation">The operation to add.</param>
public void AddDrawOperation(IRef <IDrawOperation> operation)
{
EnsureDrawOperationsCreated();
_drawOperations.Add(operation.Clone());
}
/// <summary>
/// Initializes a new instance of the <see cref="Bitmap"/> class.
/// </summary>
/// <param name="impl">A platform-specific bitmap implementation.</param>
public Bitmap(IRef <IBitmapImpl> impl)
{
PlatformImpl = impl.Clone();
}
