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Transparent Shaders
yards16

First message : 2009-11-01 20:38:52
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Yardley


16 posts
Date : 11/01/2009 20:38:52


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Hi

I was wondering if someone can help I'm getting very frustrated at trying to create a shader for the skin of this attached building. I would like for the white clover patten to be solid and for the black to be transparent. Is this at all possible. I have created a jpg file and loaded them into the appropriate locations under preview, normal, and transparency...please someone what am I doing wrong?

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Re: Transparent Shaders
Jeremy

First message : 2009-09-02 03:06:29
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Jeremy


647 posts
Date : 11/01/2009 23:50:04



Yeah, this is very possible. The way I explain here might not be the best way though. Under the Artlantis shaders drop the Invisible shader one of the walls, it will appear that it dissappears but it is still there if you try to click in the missing material. Right click it and "Add Texture..." to it, now pick the texture of what you have mapped to the wall now. Next, look at your list and you will see the textures name mapped under the shader in question. click the texture and then make it repeat X and Y. Scale it to the appropriate size then look just under the Transparency slider. Click the color box check and change that color from black to white. That should do it.

Hope this gets you on the right track!

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Re: Transparent Shaders
Jeremy

First message : 2009-09-02 03:06:29
Operating system : Windows Vista
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Jeremy


647 posts
Date : 11/01/2009 23:52:35



After reading my post again I realized I told you to pick the wrong hue. Leave the black box black, don't change it white. It will come out backwards the way I had said earlier.

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Re: Transparent Shaders
yards16

First message : 2009-11-01 20:38:52
Operating system : OS 10.5
RAM : 4Go
Computer model : MacBook Pro 2.2ghz
Processor : Intel
Graphic card
Type : sais pas
Card name : Nvidia
Video memory : 128 Mo
Quiktime : 7.5
Network card : wifi
yards16


16 posts
Date : 11/02/2009 09:45:56



Fantastic Jeremy thats worked a treat, thanks for your quick response.

Cheers

Nick

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Re: Transparent Shaders
Highlander

First message : 2009-11-09 12:38:39
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Highlander


14 posts
Date : 11/09/2009 12:38:39



I've got somewhat the same problem.

In sketchup I have a bitmap with holes in it (png with transparancy) In my model it shows correctly. When I import the scene in Artlantis it shows correctly, but there's no transparancy. When I check the box for using alphamap. Still nothing.. I've tried also with Tiff and targe. Same result. No transparancy.

I've also tried to create a shader for it, but no result. (Unpredictable behavier of holes, it looks like my transparancy map hasn't got the same uv's as my bitmap.)

Anyone who can help me???



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Re: Transparent Shaders
Stylelist

First message : 2008-01-08 16:29:21
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posts
Book
Date : 11/09/2009 13:39:31



Hey Koops,

have you made sure, that your texture actually has an alpha channel.
Just savin it as .tga does not create an alpha channel. You have to define the area wich you want to have an alpha channel. If the transparent area is plain black or any other color you can use the box with the alpha channel by color.
hope that helps.

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Re: Transparent Shaders
Highlander

First message : 2009-11-09 12:38:39
Operating system : Windows Vista
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Highlander


14 posts
Date : 11/09/2009 14:02:24



He Thanks for your quick reply. I'm pretty sure there's an alphamap in my file. I even tried inverting it in case I made it the wrong way. But when I check use alpha map or try to select the transparancy color, all I get is darker colored holes and no transparancy. I checked if my alphamap is pure black&white and it is.

I'm getting very frustrated over this because ther once was a time it did work, with exactly the same texture

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Re: Transparent Shaders
Stylelist

First message : 2008-01-08 16:29:21
Operating system : Windows XP
RAM : 4Go
Computer model :
Processor : QuadCore
Graphic card
Type : PCI-E
Card name : Nvidia
Video memory :
Quiktime : 7.5
Network card : ethernet
Stylelist


posts
Book
Date : 11/09/2009 14:15:15



Easiest way, share the texture with us and we will see...

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Re: Transparent Shaders
Highlander

First message : 2009-11-09 12:38:39
Operating system : Windows Vista
RAM : 4Go
Computer model : Acer Laptop
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Highlander


14 posts
Date : 11/09/2009 15:34:59


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what I did find out is that it doesn't work immediately coming out of sketchup. When i create a shader with a transparancy map it does work. I then have to delete the original texture and it works.

But the problem is that know my uv's aren't right anymore and I can't move texture origins directly in the shader I'll try to illustrate with a JPG. First one is my sketchup import file, directly rendered in Artlantis (Png with opacity in it works fine in sketchup)

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Re: Transparent Shaders
Highlander

First message : 2009-11-09 12:38:39
Operating system : Windows Vista
RAM : 4Go
Computer model : Acer Laptop
Processor : AMD
Graphic card
Type : Integre
Card name : Nvidia
Video memory :
Quiktime :
Network card : wifi
Highlander


14 posts
Date : 11/09/2009 15:37:42


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The second one. I converted my texture into a shader and used an opacity map for the holes. But what the!!! My holes have moved!
And now I can't find a way to replace my texture.

How can I fix this annoying problem. Probably i'm missing something very stupid, because once it worked fine for me but now it doesn't

I'm really desperate

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Re: Transparent Shaders
Highlander

First message : 2009-11-09 12:38:39
Operating system : Windows Vista
RAM : 4Go
Computer model : Acer Laptop
Processor : AMD
Graphic card
Type : Integre
Card name : Nvidia
Video memory :
Quiktime :
Network card : wifi
Highlander


14 posts
Date : 11/09/2009 16:16:56


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Well here is an update from myself...

I managed to get my PNG texture to show transparancy. i forgot to set the transparancy slider way up. That's why the "holes" weren't cut out. Stupid stupid stupid. ;) ;)

But what I still don't understand is why I can't make a shader out of this without hasseling with my UV coordinates. Does anybody know how to fix that issue?



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