Little confused about Unity Emissive Shader ...

mparis

I have an emissive map on this lamp. The entire yellow part is supposed to glow, but most of it is dark like it's not lit at all. I also baked a lightmap out through Unity 3, and I'm wondering if that has a part to play in this not working right.

The image shows my shader settings, it's just a diffuse and emissive map. It's just not glowing??

Appreciate any insight on this!

VPrime

Do you have unity pro?
Pretty sure that only works on the pro version.

mparis

So you can't have self illuminated objects in the free version?

Ben Apuna

I think you can have 100% self illuminated materials (as in not lit), but no bloom or glows.

You might be able to fake bloom with a halo.

Here are some of the other things you can't do with the free version of Unity

mparis

Ben Apuna wrote: »

I think you can have 100% self illuminated materials (as in not lit), but no bloom or glows.

You might be able to fake bloom with a halo.

Here are some of the other things you can't do with the free version of Unity

Alright thanks, you helped me get on the right track, at least hopefully it'll be self lit, if nothing else.

commander_keen

Lightmapping wasnt really designed to work with the free version of Unity. To fully take advantage of the builtin lightmapping while keeping all shader features you kinda need Unity Pro. Im guessing your problem is because of that. You should be able to set that specific object not static to exclude it from lightmaps, but really the built in lightmapping system shouldnt be used without Unity Pro and deferred lighting enabled.

mparis

Right, thanks

commander_keen

Actually the builtin self illumination shaders use the alpha channel from the illumination texture for some reason. Make sure you have your illumination data in the alpha channel of that texture.

mparis

commander_keen wrote: »

Actually the builtin self illumination shaders use the alpha channel from the illumination texture for some reason. Make sure you have your illumination data in the alpha channel of that texture.

Yeah that wasn't something that was immediately apparent to me. However it's still not lit on it's own. I'm wondering if the Unity lightmap is overriding it some how? I understand that it's glow won't be calculated into the light map bake in the free edition, but right now it still looks like it's mostly in shadow even with the alpha channel inplace.

shanks

Your emissive map needs to have a transparent background and the lit area should be in color, not greyscale. Should work then.

mparis

Ok thanks! I'll try that.