Padraic Hennessy

Learn More
Ambient obscurance (AO) produces perceptually important illumination effects such as darkened corners, cracks, and wrinkles; proximity darkening; and contact shadows. We present the AO algorithm from the Alchemy engine used at Vicarious Visions in commercial games. It is based on a new derivation of screen-space obscurance for robustness, and the insight(More)
This paper outlines a framework for modelling organisational-·,communication. It also describes an object oriented environment (the AME) that has been used to explore such models. The AME consists of a database that holds a description of the structure of an organisation and its ongoing activities. A rule interpreter makes use of the database to assist in(More)
This paper describes a novel filter for simulating motion blur phenomena in real time by applying ideas from offline stochastic reconstruction. The filter operates as a 2D post-process on a conventional framebuffer augmented with a screen-space velocity buffer. We demonstrate results on video game scenes rendered and reconstructed in real-time on NVIDIA(More)
  • 1