I've a .pic file which has alpha channel. How do i apply to an object so that the object can show the white area(alpha channel white area), and the black area tobe transparent. I should put that in more detail. My .pic file is for hair texture. The RGB channels are the actual hair color. And i add an alpha channel to that so that it can look more like hair cutting edge insteal of a flat piece of picture. In SI3D, i will make the object metarial totally transparent, and when i add the .pic to that object, at the texture window, i switch it to "alpha channel" at map component, and i will adjust the transparency slider to -1. so that the white area on my alpha chanel will show, and the black area will not. That is how I do it in SI 3D. This is what i want to do the same in XSI, however, i 've try pretty much everything. Any idea?
There are a few tutorials on this page that will help you utilize the alpha channel. http://www.edharriss.com/tutorials/tutorials_materials_xsi.htmlhttp://www.edharriss.com/tutorials/tutoria...erials\_xsi.html
Especially these:
Layering textures and materials using the alpha channel in SOFTIMAGE|XSI
Using and image with an alpha channel
Transparency Mapping
Using the Rendertree to blend shaders
Render Tree nodes in XSI
Mix2colors : superposing 2 opaque images
Ed
XSI Videos, Classes, Tutorials, Tools, Shaders....
Available at:http://www.EdHarriss.comhttp://www.EdHarriss.com
Edharriss, thank you for your site. there has so many tutorials. However, I cannot find a tutorial that suits my case. please help.
Plug your image into the color2alpha node, then plug that node into your material type's transparency input.
Ed
XSI Videos, Classes, Tutorials, Tools, Shaders....
Available at:http://www.EdHarriss.comhttp://www.EdHarriss.com
It works now. However, i want to make it apply on both side. Now it only works on the side that the normal is facing, not the back. I understand it is becaue of the normals, but is there a way to make it apply on both sides?
You can either tell mental ray to render both sides (in the render options) or you can assign a "switch" node to your shader which will allow you to put a different texture (or 2 copies of the same texture) on either side of the polygon.
Ed
XSI Videos, Classes, Tutorials, Tools, Shaders....
Available at:http://www.EdHarriss.comhttp://www.EdHarriss.com