with a light in brazil, i can change the shadow style....
but if i use a brightness material, i can't figure out how to do this.
i'm trying to get a more defined shadow from this brightness material.
also... if anyone has any tips on how to get the materials to look better for a flourescent light.... that would be great.
Brightness materials don't have the shadow control you're after. For something like this you can use a real light object in addition to the object assigned with the brightness material. Then in object properties>light, you can adjust the shadow type and parameters for the real light. Here's an example I made using your file...
i'll take a look at the file.