本系列教程探讨了在现实世界中材质的概念，然后教如何在Houdini中创建它们。学习如何在Principled Shader上调整适当的属性，得到需要的效果。

Learn how to build realistic materials in Houdini with CG Forge's Shading Theory with Karma. This set of tutorials explores concepts that define materials in the real world then teaches how to create them in Houdini. Learn how to adjust the right properties on the Principled Shader to achieve the desired results.