This matches my first thought about what would be handy. Sad that it has been abandoned.
See at the bottom of the readme:
Try to export these variables:
export ELM_DISPLAY=fb
export ELM_ACCEL=none
export EVAS_FB_DEV=/dev/fb0
Maybe also ELM_DISPLAY=drm works, maybe even with ELM_ACCEL=gl. The documentation lacks details. There is one about the Python EFL class from the same parent project, but it mixes both variables together, at least I cannot see which value should be assigned to which of the two variables: https://docs.enlightenment.org/python-efl/current/elementary/window.html
EDIT: Ah the list on this page is for the ELM_ENGINE variable, which is an alternative. ELM_ACCEL=gl seems to be valid: https://docs.enlightenment.org/python-efl/current/elementary/configuration.html?highlight=accel_preference#efl.elementary.Configuration.accel_preference
But Ah second line. Hmm, is the first maybe for builtin core engines, and the second for additional engine modules? So the sum of both is what is supported?drm is there.