Graphics Programs Reference
In-Depth Information
The glare node is a very powerful node, which performs various tasks; in this setup
we just use it in the streaks mode, which does the exact job of generaing those nice
fading lines that we usually relate to stars. Since we want very polished streaks we
select the quality to be high and set iteraions to 5 . The color modulaion adds some
variaion to the streaks that resembles chromaic aberraion; the mix and threshold
values determine how much of the result will be combined with the input image
bufer and which color values to take into account when generaing the streaks.
Finally we select how many streaks to generate, how much to rotate the streaks, and
the fading factor for the streaks. It is highly recommended to put a viewer node on
the output of this node, play a bit with the seings, and get some pracice on how it
works. To see the full size image bufer geing into a viewer node, enable Backdrop
in the header of the Node Editor; the backdrop will show the image coming into any
viewer node that gets selected.
12. Finally we need to mix all these rows of processing to get the nebula mixed with
the stars. For that, we perform the mixing with three mix nodes, as seen in the
next screenshot:
 
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