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OpenGL overlay

Hi,
I have some c++ OpenGL ES 1 code that I would ideally like to render in conjunction with the normal UnReal rendering. What opportunities are there for me to do this? This would be in the form of an overlay and would not need t interact (via depth buffering for example).

Is there some form of plugin in the UnReal rendering pipeline that I can access to add code (whether it be ES 3.1 or other)?

Thanks for any pointers,
Dave

First of all, we use ES 2.0 and up in Unreal, not ES 1. Second, all the rendering is wrapped with RHI and all states are cached so changing them directly yourself will cause issues unless you restore everything you change in the context. I’d recommend you render whatever you need using the Unreal rendering system.