9.5.2

710 • CHAPTER 13
RENDERING • RENDER SETTINGS • 711
To delete cached shadow maps from the hard drive, choose Render > Flush Illumination Caches.
However, note that this command will also delete any saved global illumination or caustics solutions
(Advanced Render module).
Limitations
 The algorithm cannot detect all changes that require the shadow maps to
be recalculated. Changes to gels, for example, are not detected and may lead
to incorrect shadows. In such cases, disable the Cache Shadow Maps option
to force the shadows to be recalculated when you render.
 If you are using CINEMA 4D NET, each client will cache its own shadow
maps.
Sub-Polygon Displacement
If you own the Advanced Render module you can use this option to deactivate SPD globally for the
entire scene, without having to do it separately for each SPD material. This option can be turned on
and off quickly for test renders.
Global Brightness
This setting lets you simultaneously set the global brightness for all light sources present in your scene.
A setting of 100% will utilize the intensity set in each light, 50% will decrease the intensity of each
light proportionally by half, while a setting of 200% will double the intensity of each light.
Render Gamma
This setting denes for which output device the image should be rendered, i.e. if you want to render
for a monitor or printer that uses a gamma of 1.1, this is where you will dene this. Nevertheless,
the image will be saved with a gamma of 1.0. Don’t worry, the image will still look correct on your
output device.
In most cases, this gamma value will not have to be changed and only affects the rendering of HDR/
32-Bit images