Apple Shake 4 Manuel d'utilisateur télécharger pdf (Page 97)

Chapter 2 Setting a Script’s Global Parameters 97

quality

When this parameter is set to lo (0), anti-aliasing is disabled. This results in poorer

image quality, but improved render speed.

maxThread

Set the maxThread to the number of available processors you want to use for rendering

by Shake.

cacheMode

The cache is a directory or precalculated images with script information attached.

When Shake evaluates a node tree at a given frame, it compares the tree to the cache

to see if it has rendered that frame before. If it has, it calls up the cached image rather

than recalculate the entire tree in order to save time. Shake keeps track of how many

times each cached frame has been viewed, eliminating the least viewed frames first

when the cache runs out of room.

You can set the cacheMode to one of four states:

• none: Cache data is neither read from nor written to.

• read-only: Preexisting cache data is read, but no new cache data is generated.

• regular: The cache is both read from and written to, but only nodes with non-

animated values are cached.

• aggressive: The cache is both read from and written to, and nodes with animated

and non-animated parameters are cached.

When setting the cacheMode, consider the following guidelines:

• In most circumstances, the regular cacheMode setting should be used.

• Consider setting the cacheMode to aggressive when you are constantly scrubbing

back and forth between two or three frames (for example, when tweaking tracking

or shape control points).

• You should only set cacheMode to none if you are using Shake on a system with

extremely limited RAM and disk space. By setting the cacheMode to none, Shake is

forced to re-compute each image that you select to view, which is the least efficient

way to run.

For more information on Shake’s caching system, see Chapter 13, “Image C

aching,” on

page 343.

macroCheck

If you open or load a script on your system, and the script does not appear, the script

may contain macros that are not on your system. If this is the problem, a message

similar to the following appears in the Console tab:

line 43: unknown function MissingMacro

MissingMacro1=MissingMacro(Keylight_1v41);

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Apple Shake 4 Manuel d'utilisateur Page 97