nightime rendering

[frogger]

Hi....

I am trying to render a night scene and am using textures that are modulated so that they will get darker if the lights are turned off or darkened or whatever....

Anyway, I have alphablended polys that come up very alpha blended (that is you can see through the whole poly not just the outside around the tree)... this artifact is present only when I have lights enabled any help?

Perhaps you are simulating night by
modulating all four color components?
You should only modulate R, G and B, while
keeping A the same.

[frogger]

Yes I think you are right, but how should I go about only modulating rgb and not a....