I need to define a generic OpenGL interface for a project that will be ported to multiple architectures. I.E. Win32, Linux, X86, ARM11, etc.

The issue is how to interface to external wrapper programs, and I believe that building a generic bitmap might be the method, wherein I render to the bitmap, and the application can overwrite it with fonts, other bitmaps, etc.

I'm fairly sure this can be done somehow in most architectures, but can it be done using hardware speedup?

Thanks much for the help!