liq| test| er|: pfxhair (add dummy material to avoid crash)
liq| test|: subd
liq| test|: vertex normal
liq| test| er|: volume
liq| test| rm|: deepshadow(but not right, it has no shadow)
liq| test|: mib_amb_occlusion
liq| test|: object hierarchy
liq| test|: light link
liq| er|: put ei_context() in ribPrologue_begin() for animation rendering, so IPR is unavailable now.
liq| er| test|: + ei_context_test
liq| test| er|: checker animation
liq| test|: image sequence
liq| test|: image sequence ( rm )