openGL ES - working fine in simulator and not in device

Question

Hi,

I'm using openGL for image editing. So i need to plot multiple images.So i was creating multiple objects of EAGLView, But before that do i need to clear any buffers or do i need to do anything else. Because it is drwaing the image for the first time correctly and for the second images its zooming the images but with the actual frame. I think its using previous buffers. This logic is working in simulator and not in device. Can anyone help me out.

Thanks, Vamsi