Creating Organic Materials - Blender 2.6 Cycles: Materials and Textures - page 253

folder. Load the galaxy-constellation-star-background.png
image (courtesy of nasaimages.org ).
3. Add a RGB Curves node (press Shift + A and go to Color | RGB Curves )
and paste it between the Image Texture node and the Emission node.
Click on the curve window to add a control point and set these coordin-
ates— X = 0.36667 and Y = 0.12778 . Click again on the curve window
to add a second control point and set these coordinates— X = 0.65556
and Y = 0.81111 .
Now, let's go ahead with the creation of the alien skin shader (with a different material
for the eyes):
1. Select the alien Suzanne object. Click on the New button in the Node
Editor window's header or in the Material window and rename the ma-
terial as alienskin .
2. Go in the edit mode (press Tab ), select the eyes' vertexes, and click on
the + icon to the right of the Material window to add a second material.
Click on the New button and rename the material as alieneyes . Then,
click on Assign to assign it to the selected vertexes. Come out of the edit
mode.
3. Switch the Diffuse shader with a Mix Shader node. In the first Shader
slot, select a Diffuse shader and in the second one, a Glossy Shader .
Set the Mix Shader node's Factor value to 0.600 , the Diffuse shader's
Color value to R 0.010 , G 0.006 , B 0.010 , the Glossy shader's Color
value to R 0.345 , G 0.731 , B 0.800 and the Roughness value to 0.100 .
4. Select the alienskin material and in the Material window switch the Dif-
fuse BSDF shader with a Mix Shader node. In the first Shader slot, se-
lect a Diffuse BSDF node and in the second one, an Add Shader node.
Set the Diffuse shader's Roughness value to 0.800 .
5. Add a Layer Weight node (press Shift + A and go to Input | Layer
Weight ) and connect its Facing output to the Fac input socket of the Mix
Shader node. Set the Blend node's Factor value to 0.400 .
6. In both the Shader slots of the Add Shader node, select a Glossy BSDF
shader node. Rename the first one as Glossy BSDF 1 and the second
one as Glossy BSDF 2 . Set the Roughness value of the first one to
0.450 and the Roughness value of the second one to 0.225 .