Author Topic: Alpha channel not working.  (Read 2173 times)

Dreamcube017

    Reputation: 0
Alpha channel not working.
« on: December 22, 2011, 07:10:51 am »
December 22, 2011, 07:10:51 am
Hi guys.

I've been looking around on the forum because I have an object that has a material containing an alpha channel. I read that if you import a png or tga with an alpha channel, Lumion would read the transparancy.

Now maybe this is just something in the paid version, but from what I read, it should work in all of them.

Here's my texture in Photoshop.


And here's that same image applied to my model in Lumion.



Well that text box didn't work out... but the greenish color is suppose to be semi-transparent. Can Lumion not have that?... that can't be right as glass isn't fully transparent.

Did I do something wrong?

Thanks.

Gaieus

    Reputation: 44
Re: Alpha channel not working.
« Reply #1 on: December 22, 2011, 10:11:42 am »
December 22, 2011, 10:11:42 am
To my best knowledge (which may not be accurate), Lumion can support 100% transparency or 100% opacity but not "in-between" - i.e. you cannot have semi-transparent (translucent) materials.

technique@aec.fr

    Reputation: 2
Re: Alpha channel not working.
« Reply #2 on: December 22, 2011, 10:53:05 am »
December 22, 2011, 10:53:05 am
Hi,

Which modeler do you use? If It's Sketch up, well apply your texture in sketch up and you will get it in Lumion!

Gaëtan

Re: Alpha channel not working.
« Reply #3 on: December 22, 2011, 12:26:44 pm »
December 22, 2011, 12:26:44 pm
Gaieus is right.

Lumion currently only supports 1-bit alpha channels (Black or white). Greyscale tones will be rounded up to 100% white or rounded down to 100% black.

Dreamcube017

    Reputation: 0
Re: Alpha channel not working.
« Reply #4 on: December 24, 2011, 09:49:41 am »
December 24, 2011, 09:49:41 am
Ah I see. thanks. Well so much for my transparent roads. Oh well. Thanks for your help.

RAD

    Reputation: 32
Re: Alpha channel not working.
« Reply #5 on: December 30, 2011, 04:55:32 pm »
December 30, 2011, 04:55:32 pm
Why aren't we allowed to have a transparency in materials?

That would be helpful in faking those clouds on the ground among other things.