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Old 05-09-2008, 01:20 PM   #1
elephantinc
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Default "glow maps"?

Can you have "glow maps", like a bump map?
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Old 05-09-2008, 01:46 PM   #2
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yes
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Old 05-09-2008, 01:51 PM   #3
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Ok thanks

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Old 05-09-2008, 03:17 PM   #4
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Originally posted by Joopson
yes
Good thing you're being so helpful, I almost didn't understand how you can do those :p ... Oo wait, I didn't
How do you make a glow map then?
Sorry for the sarcasm...
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Old 05-09-2008, 03:32 PM   #5
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I assume its like a transparency or bump map
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Old 05-09-2008, 04:17 PM   #6
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Oo, OK, sorry for the stupid question... I had something else in mind when thinking about the glow attribute...
I gust tried it in Maya BTW, and it doesn't seem to work right
Maybe it's just me...
edit: it does when using alpha gain as value
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Old 05-09-2008, 04:31 PM   #7
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what's a glow map?
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Old 05-09-2008, 04:43 PM   #8
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It's a texture map you can paint and apply to your model so that certain parts will glow. It's applied to the incandescence slot of your materials attributes. It works best when used with final gather. Here is an old test render I did years ago using such a map.
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Old 05-09-2008, 04:48 PM   #9
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You assign it to the incandescence slot? not the glow slot?
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Old 05-09-2008, 04:52 PM   #10
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i assumed it was putting something into the incandescence slot because i never heard of "glow slot"

thanks for explaining THX1138
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Old 05-09-2008, 05:03 PM   #11
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There is a glow slider on Maya materials, under special effects I think, though you can map stuff to it I don't know how much control you'll get with that since there is a node that influences all the glows in the scene anyways (that default shader glow that you see in hypershade). Its worth a try.
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Old 05-09-2008, 05:20 PM   #12
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oh that glow slot

since that's a post production effect i never thought of it....
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Old 05-09-2008, 05:58 PM   #13
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You assign it to the incandescence slot? not the glow slot?

Do not map it to the special effects slot. You will not get the same effect I demonstrated with the example pic. Plug your glow map into the incandescence slot. Thats what that attribute is for.
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Old 06-09-2008, 04:10 AM   #14
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Ok, but whats the glow one for then?
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Old 06-09-2008, 05:05 AM   #15
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There is nothing labeled glow slot. It's labeled special effects and the effect just gives you a flaring gradient effect. Like the flaring gradient from a light sabre. The biggest problem with it it is that the flaring effect gets worse ( it gets huge ) the further you move your object away from the camera.
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