9.5.2

912 • CHAPTER 18
THE SHADERS • 913
Galaxy
This shader simulates a galaxy with spiral arms, whose color you can dene using the gradient. The
Galaxy shader has an alpha channel that you can use within the Material editor on the Alpha page.
Angle is the degree of rotation of the spiral arms. Spiral Arms is the number of spiral arms.
Marble
This shader generates 3D marble structures. Use the gradient to choose the color of the marble. The
Frequency values dene the marble’s level of detail in the X, Y and Z directions. Turbulence changes
the overall complexity of the marble.