Graphics Programs Reference
In-Depth Information
4. Render a frame, and compare it to Fig-
ure 11.113. The ref lections are too glossy
and apparent; you want to mimic a semi-
gloss desktop table. Also, the lighting on
the box has changed, because the new,
shiny desktop shader is bouncing more
light than the earlier default gray plane.
This is why indirect lighting can be more
photo-real, if not more tricky to control.
5. Select the deskShader, and turn down
Ref lectivity to 0.25. Open the mental ray
heading, and set Mi Ref lection Blur to 4.
Set Ref lection Rays to 8, as shown in
Figure 11.114.
6. While you're at it, select the boxShader
and set its ref lections to be blurred, with a Mi Ref lection Blur value of 2. Set Ref lec-
tion Rays to 4. Render, and check against Figure 11.115. You'll see better results on
your own screen, because the differences in ref lections are subtle. And that's the
point: the more finesse and attention you pay to the minor details, the better your
image(s). You can play with the Ref lection Rays for your desktop to get a softer look
than in Figure 11.115.
Figure 11.113
The reflections look
too perfect and
glossy.
Figure 11.114
Create blurred reflections for the desk.
Figure 11.115
Blurred reflections on the desktop and the box make the image more real.
