Quick glow maps question...

Post » Tue May 17, 2011 7:45 am

Hey all, when working with glow maps, do you use a black and white map (white being really glowy, black being matte) and it'll glow the color of the texture, or do you put the glow colour in the actual glow map, and also will the glow even show up in the GECK. Been having a spot of trouble, thanks everyone.
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Campbell
 
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Post » Tue May 17, 2011 1:45 am

You can do it black and white but IIRC if you color the glow map it will actually put off some light and give the real glow effect, as opposed to just white which is like a flat glow effect, if you have any idea what I'm saying. And I'm not completely wrong and remembering it incorrectly.
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Kelly Upshall
 
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Post » Tue May 17, 2011 12:25 am

Hey all, when working with glow maps, do you use a black and white map (white being really glowy, black being matte) and it'll glow the color of the texture, or do you put the glow colour in the actual glow map, and also will the glow even show up in the GECK. Been having a spot of trouble, thanks everyone.

if you use the a black and white map- under normal circumstances, it'll glow the color of the emissive color in its NiMaterialProperty.

If you use a colored glow map and a colored emissive color, I think you start to get something out of the additive color model.

I know you get this if you mix straight emissive color and vertex color... you get additive color. So probably all 3. as well as taking into account the diffuse color.. gets complicated.

Now factor in the color on glow maps... And colored ambient/diffuse lights....


You can do it black and white but IIRC if you color the glow map it will actually put off some light and give the real glow effect, as opposed to just white which is like a flat glow effect, if you have any idea what I'm saying. And I'm not completely wrong and remembering it incorrectly.

No- emissive color only self illuminates the mesh itself. it does not cast light. ever. No matter what you put in the glow map.
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Matthew Aaron Evans
 
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Post » Tue May 17, 2011 3:13 am

I think you misunderstood me, I'm not saying it physically adds light in the game, but effects like in some of the screens http://www.fallout3nexus.com/downloads/file.php?id=10228 and http://www.fallout3nexus.com/downloads/file.php?id=9106; where you can clearly see some glow coming off the material.
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rebecca moody
 
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Post » Tue May 17, 2011 1:18 am

either way it doesn't matter. that's still wrong. same thing happens no matter what color is in the glow map or the emissive color in its material. the only thing that happens is you are changing the color of the glow. perhaps because it's not white you can see more contrast :shrug:

apparently, you can flip emit multi up to more than 1. and that will overdrive the emissive color, somewhat boosting it, I wonder what happens at 3...4 or more, never tried. might be worth a play around with
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Roanne Bardsley
 
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