Creating an alpha channel with a black-and-white image


The other day I happened upon this old tutorial (circa XSI 3.01) from Rob Wuster about “creating an alpha channel with an extra B/W image”. Here’s a quick update to make it work with a more recent version of XSI (eg Softimage 7.5).

You need to plug the Mix 2 Colors into an image layer. To create the image layer, I added the texture by clicking Modify > Texture > Add > Image.

Using Mix 2 Colors to fake an alpha channel

Using Mix 2 Colors to fake an alpha channel

This will give you the same effect shown in the tutorial:

Black-and-white image stamped on a texture

Black-and-white image stamped on a texture

2 thoughts on “Creating an alpha channel with a black-and-white image

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s