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Shaded viewport with lighting and shadows
Lighting and shadows in viewports is a convenience for previewing your scene.
These settings and the viewport appearance don’t necessarily match what will
happen when you render, but shadows don’t appear if they wouldn’t appear
in a rendering; for example, if an object is set to not cast or receive shadows,
it won’t do so in viewports, and if a light is turned off or is not shadow casting,
then it has no effect on the viewport display. There is one exception to this:
viewport shadows don’t check a light’s Exclude/Include list, and so excluded
objects can cast shadows in viewports.
Procedure
To view shadows in viewports:
1 Right-click a viewport, and from the Display (upper-right) quadrant of
the quad menu, choose Viewport Lights And Shadows > Viewport Shading
> Good or Best.
The Good option is for SM2.0, and the Best option is for SM3.0.
2 Select a light.
You can turn on shadows for an individual light, or for all selected lights.
3 Right-click, and on the Tools 1 (upper-left) quadrant of the quad menu,
click Viewport Shadows to turn on shadows.
4992 | Chapter 18 Lights and Cameras