Gradient Text.

I used to use a textfield  as a mask when making gradient texts,

but textLine elements seems not capable of using it as a mask,

even though it supports another mask objects.

( Is it a bug or specification or just my problem? )

So I am trying to find another solution for this.

I thought about blending mode or shader filter may work, but no luck.

If I already know how many colors are used in gradients, maybe it's

possible to make gradient filter with pixel bender, but I have no idea

how to build a gradient filter with undetermined multiple color choices.

Does anyone know a good solution for this?