The Leadtools.Windows.D2DRendering assembly contains classes that add support for the Microsoft Direct3D API.
The LEADTOOLS toolkit ships with the WPFAnnotationsDemo. This demo shows an example of using LEADTOOLS to draw annotations on a WPF image using two different rendering engines: WPF and D2DRendering.
Getting Started (Guide to Example Programs)
Interoperation between LEADTOOLS and Windows Presentation Foundation (WPF) images
Summary of All WPF Supported Image File Formats