Please see this discussion in enlightenment mailing list, i'm affected by this bug and can't use hardware acceleration.
P.S. Comment contains:
It looks like a bug in mesa. They support EGL_Y_INVERTED_NOK, but always return 0.
Look at mesa/src/egl/main/eglconfig.h:struct _egl_config, YInvertedNOK field is always 0 and
it's returned in eglGetConfigAttrib via eglOffsetOfConfig.
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