[Devel] Render in 128 instead of 256 gray levels ?

[Sebastien BARRE]

Hi

Is there an easy way to have FreeType render a glyph using 128 gray levels 
(or 64, 32, a power of 2) instead of the standard 256 gray levels ?

Compile time option ?
Hack ?

Thank you

P.S.: I'm trying to render a text with a shadow and use it as a texture on 
a 3D plane, and use OpenGL and a lookup table to change the color of the 
text *and* the shadow separately. If could use a full color texture, but 
for efficiency reasons and space I'd like to use an 8 bits texture.