Accurate Image-Space Environment Reflections in Real-Time

DOI: 10.5176/2251-1679_CGAT16.3

Authors: Alex Grace, Robert Ollington & Ian Lewis

Abstract:

In this paper, we introduce a novel technique for real-time reflections called Image-Space Environment Reflections (ISER) with the intent of reducing the limitations of screen-space reflections. The technique involves tracing rays in the image-space of an environment map supported by the addition of a depth-buffer. ISER features strong parallax effects and is shown to provide a greater accuracy of reflections than static techniques typically used in gaming applications, whilst also maintaining real-time frame-rates at high resolutions.

Keywords: reflections, screen-space, environment maps, real-time rendering.