2009

shadows on page 8103, or area shadows on page 7913, to generate shadows for
this light.
The “mental ray Shadow Map” type is provided for use with the mental ray
renderer
on page 6230. When you choose this shadow type and enable shadow
maps (on the
Shadows & Displacement rollout on page 6292 of the Render Setup
dialog), shadows use the mental ray shadow-map algorithm. If this type is
chosen but you render with the default scanline renderer, no shadows appear
in the rendering.
NOTE When shadow maps are enabled and the shadow map type is Shadow
Map, the mental ray renderer attempts to translate the shadow map settings into
comparable settings for mental ray shadow maps. (The results might not be what
you expected.) In all other cases, the mental ray renderer generates ray-traced
shadows.
Each shadow type has its particular controls:
■ Advanced ray-traced shadows See
Advanced Ray-Traced Parameters
Rollout
on page 5118 and Optimizations Rollout on page 5130.
■ Area shadows See
Area Shadows Rollout on page 5122 and Optimizations
Rollout
on page 5130.
■ mental ray shadow maps See
mental ray Shadow Map Rollout on page
5128.
■ Ray-traced shadows See
Ray-Traced Shadow Parameters Rollout on page
5133.
■ Shadow maps See
Shadow Map Parameters Rollout on page 5135.
TIP Use ray-traced or advanced ray-traced shadows when you want shadows cast
by opacity-mapped objects. Shadow-mapped shadows don't recognize the
transparent portions of the mapping, and as a result they don't look convincing.
Use Global Settings Turn on to use global settings for shadows cast by this
light. Turn off to enable individual control of the shadows. If you choose not
to use the global settings, you must choose which method the renderer will
use to generate shadows for this particular light.
When Use Global Settings is on, the shadow parameters switch over to show
you what the global settings are. This data is shared by every other light of
this class. When Use Global Settings is off, the shadow parameters are specific
to that particular light.
Standard Lights | 5081