I learned how to code three OSL patterns: circle, cross, and donut. I discovered how much logic goes into creating shaders. This was a really exciting process. After creating them, I learned about the presence map option in Renderman and used that to create transparent parts of the patterns. By using the node network in Maya, I was able to repeat patterns on top of patterns, make the OSL shader tileable, and deform the shaders using existing Pixar nodes such as PxrFractal and PxrWorley.