verve.gl — fat lines

Wide line segments (variant_fatline, wire tag 43) rendered as instanced screen-space quads — never the native lineWidth (WebGPU locks it to 1px, most WebGL2 drivers cap it too). An opaque wireframe cube (12 edges) is drawn first so depth-writes gate an animated translucent Lissajous trail (64 points, alpha fading tail to head) behind it. Width +/- steps the pixel width 1..32; Toggle World Units switches between screen-constant pixel width and world-space width. Freeze pins the orbit camera (the trail keeps animating). Square caps only — no joins/round caps. Renders through WebGPU when available, else WebGL2.