Options for offscreen rendering on Android with OpenGL ES 1.0?

I'm working on implementing picking for an OpenGL game I'm writing for android. It's using the "unique color" method of drawing each touchable object a开发者_开发问答s a solid color that is unique to each object. The user input then reads glReadPixels() at the location of the touch. I've gotten the coloring working, and glReadPixels working, but I have been unable to separate the "color" rendering from the main actual rendering, which complicated the use of glReadPixels.

Supposedly the trick to working with this is to render the second scene (for input) into an offscreen buffer, but this seems to be a bit problematic. I've investigated using OpenGL ES1.1 FBO's to act as an offscreen buffer, but it seems my handset (Samsung Galaxy S Vibrant (2.2)) does not support FBO's. I'm at a loss for how to correctly render this scene (and run glReadPixels on it) without the user witnessing it.

Any ideas how offscreen rendering of this sort can be done?

if FBO is not supported, you can always resort to rendering to your normal back-buffer.

Typical usage would be:

• Clear back-buffer
• draw "color-as-id" objects
• Clear back-buffer
• draw normal
• SwapBuffers

The second clear will make sure the picking code will not show up on the final image.