This document discusses different types of materials and textures. It begins by introducing materials and textures, then defines texture as the physical feel of something. It outlines the main types of textures as physical textures, which are tactile, and visual textures, which are seen but can evoke touch sensations. Visual textures are divided into decorative, spontaneous, and mechanical textures. The document provides examples and descriptions of different textures and concludes by acknowledging its credits.