Render to renderbuffer image

I am a beginner for OpeGL ES.when I read the OpenGL ES 2.0 programming guide, it says in chapter 12,“Framebuffer Object”,that if the image will not be used as a texture,using a renderbuffer may have a performance advantage.Then I try to render to image, but after
a few failures, I still do not konw how to implemente it. Is anybody here can help me here?
many thanks!!

Rendering to a RenderBuffer does not work on platforms that I have tried (OMAP). It’s a feature that nobody seems to use because the only thing you can do with the RenderBuffer would be to read it with glReadPixels(). You should attach a texture to your FBO, instead. This article with help: … _OpenGL_ES

Regards, Clay

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