Software Discussion

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Jonathan
480 posts

12 Oct 2005
Ok,

To my understanding, alpha channels are usefull when making things like leaves, grass, etc. and you want to keep the polygonal count down. Therefore you use Photoshop and use an image, and make the background white (or is it black?). Then you save it as a 32 bit image.

When you import the image and attach to a plane, do you have to turn on/off anything or does it naturally see the white or black part as invisible and therefore you accomplish your task?

Thanks for your time!

The tutorial file "Adding an Opacity Map" covers this in passing I think.
Cameron
2,374 posts

12 Oct 2005
you put your image in the opacity slot of your material editor. The darker colours will be less visible, the lighter colours more visible. White will be totally see-able, black will be totally not see-able. Anything in between will range from being there and not there
Jonathan
480 posts

12 Oct 2005
Thankyou very much