I use GLEW on MS-Windows.
It's helpful and do many works ..
But ,till now,I can't find a way to init GLEW without creating a HGLRC and it also means I should create a window first..
Without the help of GLEW I can't use the the new functions newer than OpenGL 1.1 on MS-Windows such a glGenBuffers or others..
But I really don't want to create a window before I render to the FBOs,any way ?
May be we can find the functions from the driver's dll file of display card but I thinks it's not a right way to me..