Graphics Reference
In-Depth Information
In the preceding set of screenshots, you can see the different effects of the 0.000 , 0.700 ,
and 1.000 values of the Snow_amount slider. The black-and-white mask works as a
separator between the rock and the snow materials.
Creating a realistic Earth as seen from space
In this recipe, we will create a realistic Earth as shown in the following screenshot, using both
image textures from the Web and some procedurals:
The Earth as it appears in the final rendering
Getting ready
The image textures provided with this Cookbook have generally been heavily down-scaled
and are good for demonstration purposes only (in this case, for a very distant Earth render).
For better results with this recipe, replace these low-resolution images with high-resolution
versions that you can find at these addresses:
F http://www.shadedrelief.com/natural3/pages/textures.html
F http://www.shadedrelief.com/natural3/pages/clouds.html
F http://celestia.h-schmidt.net/earth-vt/
F http://www.celestiamotherlode.net/catalog/earth.php
Before you download anything, always take a look at the license of the images provided by any
site you can find to ensure that they are released as freely usable, especially if you are going
to use them for commercial work. All the preceding links should be okay, but on the Internet,
things can change quite quickly, so double-check!
 
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