Anisotropic Metal

Posted on 12 February 2015 by Joss Whittle

This image was generated using a renderer developed during my PhD using the bidirectional path tracing algorithm.

glossy

Just a quick render after implementing an Anisotropic Metal material in my renderer. The test scene was inspired by one I saw on Kevin Beason's worklog blog.

Concentric Disk Sampling

Posted on 26 December 2014 by Joss Whittle

Tags: Computer Graphics

Yesterday I stumbled upon a lesser known and far superior method for mapping points from a square to a disk. The common approach which is presented to you after a quick google for Draw Random Samples on a Disk is the clean and simple mapping from Cartesian to Polar coordinates; i.e. Given a disk centered origin (0,0) with radius r // Draw two uniform random numbers in the range [0,1) R1 = RAND(0,1); R2 = RAND(0,1)...