- [Voiceover] Let's improve the realism of our cloud layer
by adjusting the density filter.
Back in the atmosphere editor, in the Clouds tab
we've got our Uniform Simple Repeater layer.
The filter is found inside the layer itself.
Right click, and choose Edit Layer.
We're back in the Advanced Cloud Material Editor.
We're currently viewing a sample of 100 meters.
To speed up the render process, we can reduce that back down
to 10 meters, both here and in
the density production preview.
Let's open up the Edit Filter dialog.
Right click on the filter, and choose
Edit Filter, and re-size the dialog.
You can move it around and also change its size.
Try to get a square graph there.
To navigate within the graph use
the right mouse button, and to zoom in and out
use Control and right mouse button.
We can zoom back a little bit.
For some reason, we're not seeing the key point here
at the lower left.
We can kind of refresh that by clicking on
the mirror button here, and once we've done that,
now we see key points on both ends.
Let's give it a little bit of open sky here
in these less dense areas.
I can drag a rectangle around that key point and enter
a numerical value down here for position X,
negative point eight, and press Enter, and now
you can see we've opened up a little bit more of that sky.
Create a new key point, click in
the middle here, and then click the New Keypoint button.
We can now move that around.
Let's convert this to a bessiea curve.
Up on the filter dialogs tool bar on the left
you've got the smooth curve button.
Click on that, and now we can move the tangents around
to create an S curve, and that's actually
about the right shape that I'm looking for.
You can see that we've got very thick clouds
with some solid areas of sky visible through those clouds.
We can close that filter dialog and close
the Advanced Material Editor and do a test render.
When the preview quality render is finished,
let's compare it to the previous version.
Once again, in the render stack, here's the version
with the adjusted filter values, and then
immediately preceding that, we have the version
where we had just a straight linear filter, and you can see
this one is much thinner, and the edited version
has a lot more contrast in the clouds.
That's how to edit the density filter for clouds.