Composite Glow effect and Masking question.

Support Compositing and Post Processing
1

Hi folks!

I’ve been tinkering with glow effects, and so far so good.

I followed this tutorial, and it works splendidly;

http://www.studiorola.com/tutorials/rendering-tutorials/blender-3d-making-objects-glow-part-3/

Hower I have run into one… pretty big problem. If a mesh that uses an alpha channel for specific transparency (like lets say, bangs), covers the object I’d like to glow (lets say eyes), the layer mask doesn’t take into account the mesh’s alpha channel, and just masks the entire thing. This blocks off the entire glow from the eye, instead of just the portions behind visible hair .

Here’s an example;

http://i14.photobucket.com/albums/a327/Primantiss/Blender/example.jpg

Notice how her left eye is glowy, but the right eye isn’t? That’s because it is behind the hair, which is physically a solid mesh… It uses alpha channels to make it ‘hair-like’. Yet the masks block of the entire mesh instead of just the visible portions.

So I guess my question is, is there a way to have the layer masks take into account alpha channels on the textures of meshes within that layer?

Any help would be greatly appreciated,

Thank you, and Happy New Year!

2

Make sure your light is casting ray shadows, and that ray tracing and shadows are enabled in the render pipeline

3

This link might help:
http://blenderartists.org/forum/showthread.php?t=175478

I had a similar problem.

4

Hmm those were both informative posts, but didn’t seem to nail the problem.

I appreciate the input though!