If you want to experiment with Physically Based Rendering, PBRT is the tool to use. Unfortunately, the latest builds have some incomplete instructions on how to build PBRT on your own machine.This article will show you how to compile and use
PBRT on Ubuntu( Version12.10 ).
First,you should install some packages that would use in the process of compiling.Copy/paste
the next line to install them:
sudo apt-get install build-essential openexr openexr-viewers libopenexr-dev libilmbase-dev libfl-dev
Second,after install the packages,download the