How do you make specific color on texture map as transparent? Edited by - Waldoo on February 18, 2002 5:00:05 AM

It is not ''a specific color''. Unless using indexed color (shudder), you''d use the ''alpha channel''.

Alpha = 1 -> opaque
Alpha = 0.5 -> 50% transparent
Alpha = 0 -> completely transparent

Look it up.

If you''re using indexed color, sorry, I''m afraid I can''t help you.

Yes I know that one but I dont want to transparent other colors on a texture map. There got to be a way to transparent in specific area on texture map.

Waldoo

*psssst* this is the way to do exactly what you want. Think about it before ''knowing'' that its not gonna work.

say you want to make red transparent,

ie:

R = 1
G = 0
B = 0

then you''d make A (alpha) = 0 (transparent)

all other channel combinations (for an example)

R = 0.5
G = 0.1
B = 1.0

you''d make A = 1 (opaque)

Please use some brains & research this for yourself =D

I just found a wonderful source code, it is called "Color Keying" You can download it at http://nate.scuzzy.net/gltut/

Enjoy

Waldoo

Lol.. that code does exactly what we were trying to explain to you.

- l8r