All but the first one have curvature for me. eg, crt-interlaced-halation. the curvature isn’t quite right, but i’ve fiddled with various display settings in my setup so it might be ok for you, or at other resolutions.

you’re right, cgcw-geom.glsl doesn’t seem to work, but the rest worked fine for me, at low framerates. i’ve attached a screenshot of an example:

[attachment file=”image1.JPG”]

(if you can’t see the image, go to https://www.petrockblock.com/wp-content/uploads/2015/09/image1.jpg – images don’t seem to be showing up for me)