Graphics Reference
In-Depth Information
Fig. 12.11 Reverse angle view of the train station illusion problem (Courtesy of Boris Steeman)
You may want to create geometry specifi cally to cast shadows where shadows
are needed. The geometry won't be rendered, but the objects in your scene will
appear to cast shadows.
• Take care to light every side of every object so that nothing appears to be com-
pletely black. You won't be able to use global illumination to fi ll your scene with
light, so you will have to use other devices to accomplish it, like adding low
intensity lights into shadow areas to imitate bounced light.
If you haven't done it yet, adjust your quality settings so that you can render your
scene quickly. When lighting a scene, it is important to render only as much as
you need at the minimum quality setting required to fi nd out what you need to
know to make further changes to the model. As you work you will start making
longer renders, but at the beginning when you are setting up your lights, they
should go quickly.
12.8
Exercise: Alignment Illusion Part 7,
Real Time Alternate
If you have access to a game engine, try to light the real time version of your scene
using the lights that come with the game engine. A real time environment will be
much more diffi cult to light well because you won't have the option of rendering
sections separately or using selective lighting as you can with an offl ine renderer.
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