The white portion appears to be an animated texture (black lines moving from right to left), the lower portion looks like the shelve's textures
I don’t know if it’s solely the viewing angle that affects this, I seem to be able to get it to change by moving the player to very odd positions also (including flying above and looking down on it)
The white portion appears to be an animated texture (black lines moving from right to left), the lower portion looks like the shelve's textures