waterFragment
constwaterFragment:string
Stylized water, for a Shader: uColor is the deep water’s colour,
uWaveSize the waves’ size in metres (1 is a pond’s ripples),
uWaveSpeed how fast they drift (0 holds them) and uRound 1 to keep
only the circle inside the plane, a pond, or 0 for the whole plane.
One pass: no depth texture and no second render, so a phone can draw it.