CUDA GL Interop , GL_RGBA8 support or not ?

I just use GL_RGBA8 texture format in OpenCL-OpenGL Interop on GTX460, that goes well, no bug recently(just until recently).

But I find some info in CUDA C Programming Guide 3.2:

“It does not currently support normalized integer formats (e.g. GL_RGBA8)”

So that means CUDA not support GL_RGBA8 format.

As we all known, opencl is a api on CUDA architecture. if the architecture is not support the feature , there will cause some bug.

So there are 3 possible choices.

1, maybe the guide is out of date.
2, maybe it supports opencl only.
3, maybe it will cause some bug on opencl too.

please help me.

thanks a lot.