Bitmap textures are digital images that represent surfaces, materials, patterns, or pictures. They are commonly used to give texture to models, renders, or environments in animation or video games. These textures are created by artists or designers using bitmap editor software such as Adobe Photoshop or GIMP, or simply by scanning an image and, if necessary, retouching it on a personal computer.
Bitmap images are typically made up of pixels, and each individual pixel represents a single point of color. By adjusting their size, frequency and color, graphic designers can create the illusion of depth and texture.