Raster fonts problem

I wrote function for displaying raster fonts and it works alone without other graphics.When i use any graphics my text doesnt appear on the screen.
Is it connected someway to difference between raster and usual graphics?
what can i do?

Some things to check:

  1. is there any glClear() between the text drawing and the other drawing?
  2. are you drawing in the right color?
  3. Are the other objects in front of the text (so it gets obscured by them)?