Graphics Reference
In-Depth Information
1.
One way is to go to the Render window and check the Transparent option under the
Film tab. This will show our Spheroid and Plane rendered in both the 3D viewport and
the effective final rendered image on a transparent background, with a premultiplied
alpha channel, as shown in the following screenshot:
The previous World setting rendered with a transparent background
2.
Now we can compose the rendered image with a blue background, both in
external image editing software (such as GIMP, to stay inside FOSS) or
directly in the Blender compositor.
A different way to render the two objects on a uniform blue background is to use a Light
Path node:
1.
If this is the case, deselect the Transparent item checkbox in the Render window
to restore the sky background in the preview and in the rendering.
2.
Click on the World Output node in the Node Editor window, press
G
, and move it
to the right.
3.
Add a Mix Shader node (press
Shift
+
A
and navigate to Shader |Mix Shader) and
move it to the link connecting the Background node to the World Output node, to
paste it automatically between the two nodes.
4.
Select the Background node in the Node Editor window. Press
Shift
+
D
to duplicate
it and move it down.
