I am trying to figure out how to do this so I can have that option on my armor for Miki 4.

I am assuming it would be done with some sort of trans map.

Has anyone ever done this? Can it be done?

Thanks.

Nobody, huh?

I guess I will experiment and see what happens.

I prefer to do this all procedural. I am not going to UV map any of this.

you'd probably want to model the cracks, wouldn't you?

Quote - you'd probably want to model the cracks, wouldn't you?

No, I am appying it to a procedural glass shader. I am thinking either a trans map or displacement. I am rendering a displacement right now to see how it looks.

Yeah, you may be right. When I tried to add the crack in, it was applying it to each polygon in the glass. I am going to UV map and see what happens. Maybe I can get it to work that way.

If not, I will give up on the idea, unless someone with more material room experience can point the way. I don't want to model the cracks in.

No reason why you can't transmap it.  I don't know how you'd do it "properly", with all the correct physical characteristics of a real glass shader but you could certainly get something reasonable with a well thought out map.  As a thought, maybe have you glass shader plugged into the white parts of the map and leave the black part "empty".  I guess it'd get more tricky if you wanted the pieces of glass to be at different directions, as they often are in real broken glass.

I haven't ever tried it meself but (I think) the idea is sound enough.  

Thanks, Paul. I found a rock chip in a windshield on Google and desaturated it. I am running the render as we speak.

The trick is to UV map first. That way the materials room is looking at the lense as a single prop instead of 2300 different props.

Now I just have to tweak it until I get the result I am after. This image is far from perfect, but it's a great start...

The first thing I am going to do is create a proper transmap. I am picking up artifacts from the .jpg from google, so I have to fix that. It's making the rest of the lense have a bump texture to it.

Then I will be able to create the effect I am going for.

Back to post results when I finish the transmap...

The map I used is a Photoshop brush, so no artifacts to worry about.  I think it was by Deviney at Daz3D for about $11:00 or so; there are dozens of free ones on the web too, some with no useage restrictions.  Of course, you need to have Photoshop or something similar to use 'em.  Good luck with your projects!

CGTextures.com has exactly what you want under "Windows/Broken Glass" High res too ;). Bullet holes, cracks and crazing.

Laurie

Thanks Laurie!

I'll check that out. I did a proper transmap and I am rendering it now.

I'll work on it a little more and see what happens.

Anyway, here is the render. You can see my plans for the armor in this render. I little cammo action...

Not bad.

I'll work on it a little more and see what happens.

Anyway, here is the render. You can see my plans for the armor in this render. I little cammo action...

The only problem I see is that the color inside the hold is the same as the glass color. Shouldn't it be dark like the inside of the helmet? ;). Unless you intended it to just be cracked glass and not a hole ;).

Laurie

Quote - The only problem I see is that the color inside the hold is the same as the glass color. Shouldn't it be dark like the inside of the helmet? ;). Unless you intended it to just be cracked glass and not a hole ;).

Laurie

Yeah, it's like a rock chip on a windshield. Not a hole, just a crack...

Quote - .

Thank you for posting that. You just made my life a lot easier! You are the man.

Most excellent, Sir Baggins.