2010

Earlier in the lesson, your painting affected only the Color attribute. To
paint bumps, it’s necessary to select a BumpMap as the new attribute you
want to paint, and then assign a new texture for the bumps you’ll create.
4 In the Assign/Edit Textures window, set both Size X and Size Y to 512
and then click Assign/Edit Textures.
Maya creates a file texture and applies it to the Bump Map attribute of
the DinoSkin material.
In the scene view, Dino’s color changes to white. Bump map textures are
based on grayscale colors. By default, when you create a rendered image,
bumps will appear in the areas of the surface where there is significant
grayscale color contrast. For instance, if a region has black and white
stripes, you’ll see grooves there. Regions with little or no contrast display
no bump.
The bumps will not show in the scene view; you must create a rendered
image in order to see them. The same is true when you paint certain other
attributes, such as Transparency and Incandescence.
Before you paint bumps on Dino, you must set up the Maya panels so
you can interactively see the results of your strokes in a rendered image.
5 Select Panels > Layouts > Two Panes Stacked.
6 In the bottom panel, select Panels > Panel > Render View.
Maya now displays the perspective view, the Render View, and the 3D
Paint Tool settings. With this arrangement, you’ll be able to see your
strokes render as you paint.
7 In the perspective view, move the camera to a close-up view of Dino’s
side.
8 In the Render View, select IPR > IPR Render > persp. This renders an image
of Dino in the Render View.
9 In the Render View, drag a selection box around Dino’s midsection and
hump.
Painting a bump map texture | 619