Problems with alpha texture

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jo-ke
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Problems with alpha texture

Post by jo-ke » Sun May 16, 2010 9:16 pm

i tried to render a texture for a curtain. it is an TGA with an alphatexture. In SU it worked with the alphaeffect but not in the render. what did I wrong?
Attachments
alpha-su.jpg
alpha-su.jpg (216.58 KiB) Viewed 11012 times
alpha-tr.jpg
alpha-tr.jpg (78.9 KiB) Viewed 11011 times

Fletch
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Re: Problems with alpha texture

Post by Fletch » Sun May 16, 2010 11:09 pm

please provide scene.
when you apply a material template, you must be sure that alpha is same for your texture.... should be so by default, so this is why I ask for the scene.

jo-ke
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Re: Problems with alpha texture

Post by jo-ke » Mon May 17, 2010 5:15 am

here's the scene. Thank you for your help.
Attachments
alphatex.zip
(654.81 KiB) Downloaded 439 times

jo-ke
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Re: Problems with alpha texture

Post by jo-ke » Mon May 17, 2010 5:32 am

Oups! Now it works! great. :-)
Attachments
alpha-tr2.jpg
alpha-tr2.jpg (84.6 KiB) Viewed 10990 times

Frederik
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Re: Problems with alpha texture

Post by Frederik » Mon May 17, 2010 6:06 am

Hi Jo-ke,

I don't want to change subject - nor hijack your thread - however, I've been wondering why you have the TWR watermark in your renders... :?
I can see that you're a licensed user of TWR and thereby you shouldn't have the watermarks...
Cheers
Kim Frederik
Twilight Render Support
“…Life is drawing without an eraser...”

jo-ke
Posts: 1134
Joined: Tue May 11, 2010 6:30 am
OS: WIN 10
SketchUp: 2021pro
Location: Germany

Re: Problems with alpha texture

Post by jo-ke » Mon May 17, 2010 7:24 am

the reason is, that I'm working on two PC's, and I've already orderdered the code for the second PC.

btw.: It would be nice to join the licenced usergroup.

cherrs

jo-ke

Fletch
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Re: Problems with alpha texture

Post by Fletch » Mon May 17, 2010 9:50 am

you should have access to the licensed user group "Red Carpet Club" section of the forum.
I would start at the Master List of Resources.

The alpha transparency of the PNG image is become a 50/50 clip map, which means that anything lighter than 50% grey becomes visible, anything darker than 50% grey becomes invisible (or vice-versa depending how you think about it.)

The alpha transparency of SketchUp's material Alpha Slider between 0 and 100 will work just right automatically (theoretically)... you will also find the same alpha numbers in the Twilight Material editor panel.

jo-ke
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Re: Problems with alpha texture

Post by jo-ke » Mon May 17, 2010 7:46 pm

Thank you for admitting me to the redcarpetzone :-)

I'm still not satisfied with the render of the fabrictexture. I SU it looks more textile, then in TR.

Should I change something in the alphatexture or try a different setting of the rendermethod?
Attachments
alpha-su-tr.jpg
alpha-su-tr.jpg (108.86 KiB) Viewed 10938 times

Frederik
Posts: 1080
Joined: Sun Mar 08, 2009 8:16 am
OS: Win Vista Ultimate
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Re: Problems with alpha texture

Post by Frederik » Mon May 17, 2010 8:04 pm

Can you tell us what you're trying to achieve...??
I believe you're doing something wrong, but I have difficulties understanding what you want the material to look like...
If possible, please post an image of what you're looking for...
(remember, an image says more than one thousand words...) ;)

Have you read and watched some of the "Getting started" tutorials we've provided...??
Cheers
Kim Frederik
Twilight Render Support
“…Life is drawing without an eraser...”

jo-ke
Posts: 1134
Joined: Tue May 11, 2010 6:30 am
OS: WIN 10
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Location: Germany

Re: Problems with alpha texture

Post by jo-ke » Mon May 17, 2010 8:59 pm

The picture of SU shows it very well. It a fabric with some strips of transparency and some strips of a pattern, you can't look through. The patternstripe is OK but the stripe with transparency ist totally tranparent after rendering. I'm shure I did something wrong

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