9.5.2

956 • CHAPTER 18
TEXTURE MAPPING • 957
Seamless
Seamless is generally of little use for photographed textures, although you
can generate interesting patterns. The option is best suited to patterns, such
as wood, stone or marble.
If the Seamless option is enabled, tiles are mirrored to prevent visible seams. However, this sometimes
leads to a buttery effect in the pattern.
Tile
If you enable the Tile option for a 2D or 3D shader it is not, strictly speaking,
tiled, but instead lls the entire object seamlessly. There may or may not be a
repeating pattern depending on the programming of the shader.
If this option is enabled, the texture picture will be repeated endlessly on the surface. The effect
becomes visible when you scale down the texture or when the texture geometry has not yet been
tted to the object using the Fit To Object command. Otherwise, the texture map lls the texture
geometry once.
If this option is disabled, the texture map will not be repeated on the surface. Any materials that are
underneath will show through in the parts not covered by the texture tile.
Use UVW For Bump
The bump channel must be enabled for this option to have an effect.