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FPSC Classic Models and Media / Transparency Plea!

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Uthink
18
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Joined: 30th Sep 2006
Location: State of Confusion
Posted: 15th Jul 2007 09:08
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After spending 2 hours pouring through the forums for transparency info, I'm putting out a plea. I'm looking for a step by step walkthrough of how to create transparency in a texture.

I'm using Photoshop CS but will use Gimp if it's easier. And I'm using MagicFPS to make my segments. Most of the info people have posted in the past is very incomplete. They tell you create an alpha channel, but there's more to it than that. Some posts also say that Photoshop doesn't save alpha in TGA format. But TGA and Jpeg are the preferred formats for MagicFPS.

Other postings claim that you just need to have true black (RGB 0,0,0) in your image and that's all.

I'd appreciate any help.
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Silent Thunder
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Joined: 6th Feb 2006
Location: The Ship
Posted: 15th Jul 2007 09:13
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Color the part that you want transparent 0,0,0...



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TeMpLaR1
19
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Joined: 28th Sep 2005
Location: Australia
Posted: 15th Jul 2007 09:17
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well i no how to do it with adobe photoshop

download the nvidia .dds plugin

you can then save .dds textures that are transparent, its what i use for my huds.

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Uthink
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Joined: 30th Sep 2006
Location: State of Confusion
Posted: 15th Jul 2007 09:29
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Quote: "Color the part that you want transparent 0,0,0..."


I only wish it was that simple!
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Uthink
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Joined: 30th Sep 2006
Location: State of Confusion
Posted: 15th Jul 2007 09:45
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Quote: "well i no how to do it with adobe photoshop
download the nvidia .dds plugin
you can then save .dds textures that are transparent, its what i use for my huds."


- Downloaded the plugin.
- Created a new file with transparency as the background.
- Pasted my image in.
- Selected a square in the middle and deleted it to show the transparency.
- Saved it as dds.

The texture showed white where the transparency should be.
There are a lot of options with saving as dds. Should I
have changed something from the defaults?
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Duplex
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Posted: 15th Jul 2007 09:58
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You need to have black in the background.

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Urban Pack WIP
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TeMpLaR1
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Joined: 28th Sep 2005
Location: Australia
Posted: 15th Jul 2007 10:02
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no with the nivida plugin


you need to set the properties as follows


in the drop down bar set it to 8.8.8.8 ARGB 32bpp | unasigned


do what you did before, removing the piece of your texture to show the transparent background and now save it as a .dds file


if you open the file itself after saving in adobe it will have a white background but use it in FPSC it will be transparent.

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Uthink
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Joined: 30th Sep 2006
Location: State of Confusion
Posted: 15th Jul 2007 10:21
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Quote: "in the drop down bar set it to 8.8.8.8 ARGB 32bpp | unasigned"


It worked! Thanks for your help. Now I can finally go to bed.
It's 3:20am here in the U.S.
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FredP
Retired Moderator
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Joined: 27th Feb 2006
Location: Indiana
Posted: 15th Jul 2007 13:19
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If you use the Gimp here's how you can do it.
Select the area that you want transparant.
Add a layer mask.
Apply the layer mask.
Save as .dds (if you downloaded the plugin.Since it's free...what the heck...get it).
Do pay attention to the options when adding a layer mask.If the option you picked doesn't add the right one (there are several options) then just use the edit function to undo and try the next one.
I do believe that you would select the "selection" and the "invert mask" options.You might also check this out...

Please have mercy and use the search function.
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Luciferia
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Joined: 3rd Jan 2007
Location: England
Posted: 15th Jul 2007 16:03
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Uthink, transparency is a pointless thing unless you want an invisable wall. You will not be able to see it. I think you want translucent which has form but you can still see thorugh it.
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Uthink
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Location: State of Confusion
Posted: 15th Jul 2007 18:34
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I just want sections transparent. For items such as chain link fencing etc. Translucent implies that you're viewing through a material. I actually don't want any material to be there. Like a hole in a wall.
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Airslide
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Joined: 18th Oct 2004
Location: California
Posted: 16th Jul 2007 05:37 Edited at: 16th Jul 2007 05:41
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True black (0,0,0) only works in formats such as Bitmap.

Transparency is very easy in GIMP if you start your image with a transparent background, then the first (background ) layer is completely transparency.

EDIT: Come to think of it, same in photoshop. I'm still getting used to PS again, I have it on my laptop not my desktop (aka that thing that sits in the closet 90% of the year )


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