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Setting material/color alpha

Development Discussion Rendering
#1

Ok this should be obvious and trivial.

I just want to set the alpha for a color value.
I am just seriously deficiant in the basic flow of the material system, I can get access to everything i need, except the possiblity to setting the (w, or a) value for a Vector 4(or RGBA if you want).

The goal is to make a still detectable invisiblity effect, using the fresnel to define the edges.

#2

Your material either needs to be translucent(to be able to set an opacity value), or you need to change the character’s material to that kind of a translucent material whenever needed.

#3

Thank you. I was sure I was going crazy. Thats much better then specifiying alpha as part of the color parameters. Makes a lot more sense. And I roughly got the effect I was expecting. Thanks again.