[superbad]

Thanks for running those. Setting ND to 2 is a trick I didn't know about. That would explain why I was getting a sharp outline behind the curtains when using a clipmap. Apart from the faint tiling pattern, I think your clipmap version is the more convincing of the two, although it's a bit more translucent than I was looking for. The SSS version emits a kind of glow (mine does it too) that doesn't look right.

[Hervé]

cool tests... I like the clipmap version the best..