Dynamic Resolution Rendering on OpenGL* ES 2.0

https://software.intel.com/en-us/articles/dynamic-resolution-rendering-on-opengl-es-2

What’s blender OpenGL version? (sorry can’t find info, people on forum say from 1.2 up to 4.0)
Can it be done in BGE? (scaling resolution down to keep FPS up)

sorry for my english.