Overhauled the rainPass's support for the "operator" version of the effect. It now overrides the brightness of any glyph brighter than a threshold, which I think is a much clearer concept.

Also changed the way the glyphs cycle in the "operator" version, after noticing they only change once every four or five frames in the original effect.

js/utils.js

@@ -139,6 +139,7 @@ const makeFullScreenQuad = (regl, uniforms = {}, context = {}) =>
 		uniforms: {
 			...uniforms,
 			time: regl.context("time"),
+			tick: regl.context("tick"),
 		},
 
 		context,