[SDL] OpenGL and SDL, Weird Alpha Problem

[James Turk]

I am currently working on changing the drawing portion of my code to 
OpenGL Ortho, while still using SDL for everything else.  I have run 
into a fairly strange error where my color-keyed images (using 255,0,255 
for the key) are being drawn with a white background (the pink is simply 
replaced with white).  I am calling SDL_SetColorKey and then 
SDL_DisplayFormatAlpha, which I was told is the correct way to use color 
keys in OpenGL.  (by the way, blending is enabled.. and I've tried 
almost every combination of arguments to glBlendFunc that I could find. 
  Is there something else that needs to be done on the SDL side, or am I 
missing some GL code somewhere)