2010

Table Of Contents
This region will update when you paint.
For the IPR renderer to render bumps as you paint, you must update the
bump map texture after each stroke. You can set this to occur
automatically.
10 In the File Textures section of the 3D Paint Tool settings, turn on Update
on Stroke.
For a grooved bump effect, you need to change the brush shape.
11 In the Brush section of the 3D Paint Tool settings, click the Browse button.
12 Select the hatch.jpg brush and click Open.
13 Paint on Dinos side.
Notice the Render View updates with each stroke.
The bumps appear as grooves in Dinos surface because you painted
contrasting black stripes on the white texture. In general, gray or black
over a white background results in bumps that appear indented.
If you wanted bumps that appear raised on the surface, you could start
with a black background and paint gray or white over it. For example,
you could flood the texture with a black Flood Color, then paint white
or gray strokes rather than the default black.
Greater contrast between the background color and the color you paint
results in deeper-looking bumps. Less contrast results in more subtle
bumps. In the previous step, you painted using a black color, resulting
in prominent bumps. If you change the Color setting to a light gray and
paint on the white background, only subtle bumps will appear.
This concludes the lesson.
14 Before doing other lessons, restore the Channel Box in the Maya window.
620 | Chapter 11 Painting