9.5.2

68 • CHAPTER 3
CONFIGURATION • 69
Render Threads
Use this drop-down list to set the number of render threads (the number of render lines in the
viewport or Picture Viewer). On single-processor systems, there is little point in using several threads
because this may reduce render performance and the threads may be assigned different portions of
render time (unequal distribution in the viewport).
Choose from Optimal (CINEMA 4D sets the number of threads automatically), 1 (switches off
multithreading on multi-processor systems), 2, 4 or 8.
Attribute Manager Limit
Denes the maximum number of elements such as objects or keys that can be edited in the Attribute
manager. For example, if the value is set to 10 and 477 objects are selected, only the rst ten elements
will be taken into account. The value of 10 used in this example has little practical use; use a much
higher value.
Sub-Polygon Displacement Memory (MB)
This setting will only have an effect if the optional Advance Render module
is installed.
When rendering sub-poly displacement, CINEMA 4D must work with a huge number of polygons — up
to several hundred million. The cache that would be required to calculate the displacement samples
would be larger than the hardware could cope with! Therefore, only part of the samples are stored
in memory at any one time. The amount of RAM that is used to store these samples is dened by the
Sub-Polygon Displacement Memory value.
Strike a balance between a low value and a high value. A low value makes for long render times while a
high value can also slow down rendering if it is set so high that virtual memory must be used. In most
cases the default value is sufcient. In cases where you are using extremely high SPD subdivisions, try
to speed up the rendering by optimizing the value.
Monitor Gamma
This is where you set your monitor gamma. For a PC, this setting would normally be 2.2 for a Mac 1.8.
All 32-Bit images that are loaded into the Picture Viewer or BodyPaint 3D’s New Texture Viewer will
be rendered using this gamma value.
You can ignore this option if you are not working with 32-Bit images.
The Difculty With Gamma
If you don’t work with 32-Bit images you can disregard the following.