Foveated Real-Time Ray Tracing for Virtual Reality Headset

Figure 1: (a) Our method with 6.7M triangles Rungholt scene. 55K shaded samples. Inset picture was taken through the lens of the Oculus Rift HMD. (b) Naı̈ve ray tracing. 1M shaded samples. Visual quality in our method is equivalent to the one produced by the naı̈ve method when seen through the HMD. (c) Our foveated sampling pattern and k-NN filtering method. Each cell corresponds to a sampling point. Real-time rendering over 60 fps is achieved with the OpenCLray tracer, running on four RadeonR9 290X GPUs.