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Elexis
Fus Ro Dah!
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Original Poster
#1 Old 23rd Jan 2012 at 8:41 AM
Default Tutorial: Creating Bumpmaps (Normal Maps) for TS3
Creating Bumpmaps (Normal Maps) for TS3

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leefish
Sesquipedalian Pisciform
retired moderator
#2 Old 23rd Jan 2012 at 8:52 AM
Thank you Elexis - it looks like this tutorial will be invaluable for objects and walls as well.
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blakegriplingph
Field Researcher
#3 Old 6th Feb 2012 at 8:06 AM
And another thing: If you want a deeper-looking normal map, duplicate the generated map layers and then set the just-cloned layer as an Overlay. Do a Gaussian blur on it too for better results.
TheJim07
Scholar
#4 Old 30th Sep 2015 at 11:01 AM
Hello,

I don't understand how to change RGB channels with GIMP and I don't have Photoshop. Can you help me ?
Surei
Lab Assistant
#5 Old 1st Oct 2015 at 10:15 AM
Quote: Originally posted by TheJim07
Hello,

I don't understand how to change RGB channels with GIMP and I don't have Photoshop. Can you help me ?


Colors > Components > Decompose > RGB (or RGBA if your image has an alpha channel)

Do whatever

Colors > Components > Compose > RGB (or RGBA)
TheJim07
Scholar
#6 Old 1st Oct 2015 at 3:46 PM
Can you tell me step by step what I have to do to copy and paste the red canal in the alpha canal and copy and paste the green canal in the red and blue canal, please ?
Surei
Lab Assistant
#7 Old 1st Oct 2015 at 9:47 PM
This TS4 tutorial has gimp instructions. The steps are the same and explains the coping and pasting part.

You could also merge the red layer into the alpha, duplicate the green layer twice and rename the copies (red and blue). You would have to use compose as opposed to recompose if you do it that way.
TheJim07
Scholar
#8 Old 2nd Oct 2015 at 11:14 AM
Quote: Originally posted by Surei
This TS4 tutorial has gimp instructions. The steps are the same and explains the coping and pasting part.

You could also merge the red layer into the alpha, duplicate the green layer twice and rename the copies (red and blue). You would have to use compose as opposed to recompose if you do it that way.

Doesn't work for me. When I use decompose (RGBA) I have only 2 channels : grey and alpha.
Surei
Lab Assistant
#9 Old 3rd Oct 2015 at 3:19 AM
Quote: Originally posted by TheJim07
Doesn't work for me. When I use decompose (RGBA) I have only 2 channels : grey and alpha.


Well yes, that is supposed to happen. You should have 4 layers in the layers dialog (red, green, blue, and alpha). You make changes to those, and once you compose/recompose they will be your new channels. Make sure you have "Decompose to layers" checked when you decompose.
TheJim07
Scholar
#10 Old 3rd Oct 2015 at 12:50 PM
Quote: Originally posted by Surei
Well yes, that is supposed to happen. You should have 4 layers in the layers dialog (red, green, blue, and alpha). You make changes to those, and once you compose/recompose they will be your new channels. Make sure you have "Decompose to layers" checked when you decompose.

I'm sorry but I don't understand. You are saying that I need to have 4 channels when I use Decompose, and I have only 2 (grey and alpha). How am I suppose to copy the red canal in the alpha canal without red canal ?
Surei
Lab Assistant
#11 Old 3rd Oct 2015 at 6:08 PM Last edited by Surei : 3rd Oct 2015 at 6:24 PM.
Quote: Originally posted by TheJim07
I'm sorry but I don't understand. You are saying that I need to have 4 channels when I use Decompose, and I have only 2 (grey and alpha). How am I suppose to copy the red canal in the alpha canal without red canal ?


You're supposed to have 2 channels (gray and alpha) and 4 layers. Do you have the layers window open?

Windows > Dockable Dialogs > Layers (menu) or ctrl + L (on keyboard)

If you have the layer dialog open you should see the 4 layers you want to edit.

Information about layers
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