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// corner glints — chrome
//
// Hand-written, unlike contrib/shaders: those are generated from
// contrib/shadertoy.html, and the toy previews a pane's *contents*. A frame is
// a different rect and the toy has no frame to show.
//
// Drop this into ~/.config/slosh/config.kdl (a running session picks it up
// when you save), or point $SLOSH_CONFIG at this file. To hang it off a pane
// state instead of every pane, put the same pass inside one:
//
// states { bell { ... } }
//
// The four corners breathe together, brightest at the corner itself. `dist`
// counts a row double, so the glint is round rather than an ellipse.
shaders {
tint where="chrome" channel="fg" color="#ffffff" amount="clamp(220 - min(min(dist(x, y, 0, 0), dist(x, y, cols - 1, 0)), min(dist(x, y, 0, rows - 1), dist(x, y, cols - 1, rows - 1))) * 55, 0, 220) * (55 + abs(t / 3 % 90 - 45)) / 100"
}
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