9.5.2

906 • CHAPTER 18
THE SHADERS • 907
Text Spline
Here you can enter text that will be projected onto the texture. Set Plane to XY (the default plane for
spline primitives).
Vertex Map
This shader renders a vertex map as a grayscale image. In the example above, the vertex map is
displayed on the left arm and on the right arm you can see the rendered result. Areas with maximum
weighting are colored white and those with minimal weighting black. The shader was originally
designed for use with the Dirt shader, which enables you to calculate dirt as a vertex map. The Vertex
Map shader works well with HyperNURBS — ensure that each Vertex Map tag has a unique name.
To assign a vertex map, drag and drop its tag into the Vertex Map box. To invert the color of the
grayscale image generated from the vertex map, enable the Invert option.
Brick
You change the number of bricks using the texture tiling.