You've been logged out of GDC Vault since the maximum users allowed for this account has been reached. To access Members Only content on GDC Vault, please log out of GDC Vault from the computer which last accessed this account.

Click here to find out about GDC Vault Membership options for more users.


The Number One Educational Resource for the Game Industry

Session Name:

Practical Techniques for Ray Tracing in Games (Presented by Imagination Technologies)


Ray tracing has, for many years, been the gold standard of visual realism in 3D rendering. Thanks to advances in modern graphics hardware, ray tracing is now a feasible technique for use in games. This presentation will describe how ray tracing has been successfully integrated into the Unity engine and combined with traditional rasterized 3D graphics. Accurate shadow rendering is a key component of visual realism. Ray traced shadows can provide good performance, accurate penumbra, and they avoid some of the artifacts and pitfalls of shadow maps and shadow volumes. Reflections are an obvious application for ray tracing in games. Reflections and refractions off irregularly shaped objects can add an element of realism that is difficult to achieve any other way. This session will cover the technical details of how these effects are blended into the Unity engine's rendering pipeline without sacrificing real time frame rate.

Did you know free users get access to 30% of content from the last 2 years?

Get your team full access to the most up to date GDC content

  • GDC 2014
  • Gareth Morgan
  • Imagination Technologies
  • Jesper Mortensen
  • Unity
  • free content
  • Programming
  • Programming