Quad/Plane shader that allows light to pass through the other side? (Image!)

Please look at the image

There is a light source between plane meshes. As you can see, planes before the light source is very dark because the back sides of the planes are receiving light. I want those planes to be lit brighter, the same way like the planes behind the light source.

So I think I need a shader that makes light go through the back side of plane and apply lighting to the front side. But I’ve only written some simple shader before so don’t know how. Could anyone give me some hint?

Thanks

Additional info

  • I use deferred lighting. Also can’t use ambient color/directional light for my scene.
  • I still want the planes behind the light source to look as it does(bright).

have a look at this: http://www.farfarer.com/blog/2012/09/11/translucent-shader-unity3d/ you can tweak the lighting model to achieve this I think.

Great! It worked just like I wanted.
1636592--101198--$light2.JPG

Thanks you.