Fixed it,
So after a bit of thinking I realised that the default buffer must be re binded at some point so did another search and found 3 calls to fbo_ext->glBindFramebuffer(GL_FRAMEBUFFER_EXT, 0); And my earlier hunch was correct that ios' default buffer id is actually 1 so changing to the below makes it work fbo_ext->glBindFramebuffer(GL_FRAMEBUFFER_EXT, 1); So now I need to add a DEFAULT_FRAMEBUFFER define or something in the FrameBufferObject header file that is set it to 1 on ios Over all though, good news. Performance seems great too. Tom
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