Alpha channles and TGA

Hi guys, I am trying to make a Fade Filter for my CBSystem and for that I need a Splat Image. Splat images are images that appear on the screen. So far so easy, problem is that I also need to see transparent areas ... and I need to see 4 of them at least. As some of you may know, such transparent areas are created by alpha channels. This wouldn't be a problem, if I need 4 transparent areas in my my, than I just create 4 alpha channels right ? ... Wrong .... Problem is that TGA images, can only have 1 alpha channel. Therefore I can't do it that easily ... I know there are ways of doing, Blizzard did it, I just can't find a way to do it ... Maybe I merge all alpha channels into one, maybe it is something else.

Thing is I can't find an answer for now, can some one help me ?
This is worth +rep ofc.

Hi guys, I am trying to make a Fade Filter for my CBSystem and for that I need a Splat Image. Splat images are images that appear on the screen. So far so easy, problem is that I also need to see transparent areas ... and I need to see 4 of them at least. As some of you may know, such transparent areas are created by alpha channels. This wouldn't be a problem, if I need 4 transparent areas in my my, than I just create 4 alpha channels right ? ... Wrong .... Problem is that TGA images, can only have 1 alpha channel. Therefore I can't do it that easily ... I know there are ways of doing, Blizzard did it, I just can't find a way to do it ... Maybe I merge all alpha channels into one, maybe it is something else.

Thing is I can't find an answer for now, can some one help me ?
This is worth +rep ofc.

I'm not certain I completely understand your problem, but you should be able to alpha out all four transparent areas in the same alpha channel. Ever used Layer Masks in Photoshop? Alpha'ing areas out of a texture is just like that.

How do I do that ?

Why would you need 4 alpha channels anyway? But yeah, I don´t understand exactly what´s your problem, try to be more precise.

try this tutorial, just draw over the areas of the texture you want to alpha.

You have to make 4 images, each with their own alpha channel.

Really? can you give me an example cause I've never heard of it before.

Couldn't you set things with 100%, 75%, 50% and 25% transparency, then use WC3's alpha control to assist in fading it? As you fade it out more and more, it'll put more toll on the more transparent parts. Realistically though, they'd all have a common part.

Ok, im not really sure what your asking, but if you want 4 transparent areas, just make them all on the same alpha channel.

He wants 4 different splat filters, each with a different design. To do this, you need to have 4 images, each with their own alpha channel to the design you want. No fancy hacks or anything.

Any particular reason you felt the need to post this thread in two locations on the same day, on the same site?

As I and several others have said, you need to be a little more specific here. Are you trying to make:
One image with four transparent areas
-or-
Four separate images, each with their own transparent areas?

Merged your stuff -- Please don't multipost your threads, it isn't cool. Last and only warning.

once you solve the problem i'd be interested in seeing what you were trying to do