scrollingDeltaY is a double and the Cocoa event pump truncated it to an int per EVENT
before accumulating. A trackpad or a Magic Mouse sends a stream of fractions of a line,
every one of which truncated to zero, so the wheel was dead; a notched mouse sends three
to ten lines at once, so it jumped. The fraction is accumulated now, a precise delta is
scaled from points to notches, and the remainder carries to the next frame.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
layer_flutter's mask was the vertex's height alone, so on a ten metre aspen every part of
the trunk above 1.2 m trembled with the leaves and the bole read as cloth. What separates
a leaf from a bole is distance from the model's centre line, not height; the mask is
radial now, and small plants keep the old one because a flower is all leaf.
NEAR_FADE dithers tree foliage out inside arm's length of the camera, in the depth
prepass, so the lit pass never sees those pixels and the equal-depth optimisation is
untouched. gl_Position.w is the view depth, so it costs one varying and no uniform.
Blades, cards and flowers are excluded - they live at the player's feet - and the shadow
pass keeps every leaf.
daylight_hand takes a reach in metres. The falloff was an inverse square windowed between
26 and 6 with both numbers hard-coded: two per cent of its own near field at ten metres,
so a torch lit your boots. It is a gentle power out to the reach now.
Measured in Maroon Lake, twice per side: the crown mask moves 1.7% of an aspen frame and
nothing at all in the meadow under it; the near fade moves 7.1% of a first-person frame
at a conifer and 0% where there is no foliage in the lens; the torch's reach lifts the lit
ground 20 to 45% and leaves the sky bit-identical.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
