Hi this is my first post on the forum :smile:. Im trying to learn the Mod Tool so that I can make custom models for a video game using the Source Physics Game Engine. But I was having problems with textures. Does anyone know if there is a way to change the opacity of textures in the tool, to make theme transpareant? Thanks in advance!

-Dylan, Omega Games

You can drive the opacity by using a texture’s alpha channel, or a seperate black and white image mask. There are a few different ways to set it up so that modtools displays them.
Here’s one of the methods, which uses a seperate mask instead of an alpha channel.

Afterwards, getting it to work in side of Source is pretty simple too.
http://www.hl2world.com/wiki/index.php/Alpha_Channel_Textures

[quote=Cryrid;9468]You can drive the opacity by using a texture’s alpha channel, or a seperate black and white image mask. There are a few different ways to set it up so that modtools displays them.
Here’s one of the methods, which uses a seperate mask instead of an alpha channel.

Afterwards, getting it to work in side of Source is pretty simple too.
http://www.hl2world.com/wiki/index.php/Alpha_Channel_Textures

Hey Thanks for that, nice little tip. Worked out great and it was exsactly what I was looking for.

Regarding the OGL setup in XSI, ignore what I typed. I looked at it later and realized I was creating a completely different effect than I had intended. Instead, here’s a simpler way (less nodes) to use an alpha channel of a texture for opacity.

Sorry about that ^^’