Blend Material & Two-Sided Material

I have implemented two new materials. The first one is blend material, which adds a lot of power to the material system since you can arbitrarily use different materials on parts of the same mesh. The second material is two-sided material, which is useful for thin translucent materials like paper, lights, and leaves since it allows the back-face to receive light.

Below are three examples. The first one shows the blend material in action, the left sphere is a reflective sphere and the right is the blended material with a rough refractive material and the mask is the world map. The white parts receive 100% of material A and the black parts will receive 100% of material B, anything in-between receives a proportion of both.

For the two sided material the front facing parts relative to the camera receive material A while the back facing parts receive material B, and a flag for translucency to allow light to go through the back is optional and set as off by default. The second image shows a open cylinder with a two sided material. The third image shows an render with a spherical light place inside a tube, the interesting thing is that most of the light illuminating the scene is from indirect lighting.

blend-material2.jpg
Blend material with reflective and rough refractive materials
twosided.png
The front face is shaded with the red material and the back is shaded with the blue material
two-sided1.png
Two-sided material with “Translucency” enabled

References

http://blog.turbosquid.com/2014/06/09/turbotips-v-ray-blend-material-part-1/

http://docs.chaosgroup.com/display/VRAY3MAX/Translucent+Two-Sided+Material+%7C+VRay2SidedMtl

http://www.ramyhanna.com/2008/06/translucent-leaves.html

http://www.josefbsharah.net/v-rayforc4d-basic-startup-part2-basix/

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s