Is there a bug of "glass" material in UE4.12 ?
The first image is captured in UE4.10.3
The second image is captured in UE4.12.0 and UE4.12.5
I have found the reson is: "glass" material do not support LERP
The question would be appear if i set OPACITY with LERP to link two constants
Otherwise it would be nice if i set OPACITY with one constant only
But it is all OK in UE4.10
There are two issues with translucency in 4.12. One of those was resolved and the other is still open, which involves Skylight affecting translucent materials even though it should be blocked by other geometry, like your ceiling in your scene.
answered Jul 26 '16 at 12:15 PM
Tim Hobson ♦♦ STAFF
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