[Gimp-user] 8 and 1 bit images

[jgarnold <forums gimpusers com>]

> Opps that didn't work (convert to 1 bit) which resulted in an error
> when I attempted to save as a TIFF file (TIFF save cannot handle
> indexed images with alpha channel.)
> I should I guess explain what I am trying to do. I am creating photo
> realistic scenery for use withing Flight Simulator X.
> What I have to do is create a 'water mask' which is done by creating a
> layer and then using that layer to 'paint out' all the water areas
> using a BRUSH which is of  color BLACK (0,0,0). This I have already
> done. I select that layer and then convert it to 1 bit and then
> attempt to EXPORT it as a TIFF image with NO COMPRESSION. That is when
> I get the error. Is there a way around that.

Sorry I forgot to mention that for this 'water mask' I do NOT need shading.
For the 'blend mask' I do need shading but that is the one I need to have as a
grayscale 8 bit image which I think I am ok with now

-- 
jgarnold (via www.gimpusers.com/forums)