Orkuncakilkaya
ab6f310013
layer_flutter(l, v) gives a scatter layer a per-leaf tremble. The vertex stage offsets each leaf by a phase taken from its own place on the card, so neighbouring leaves are never in step, and writes the result out as a varying the fragment stage uses to flash the leaf's pale underside as it turns - which is the part that reads, since a still frame of a tremble is a still frame of nothing. One uniform, one varying, no extra pass. And the sway itself was measured in METRES: hgt * hgt * 0.35 is right for a 40 cm flower and puts ten metres of sideways into a 14 m trunk, so every tall tree in the valley stood bent over like a fishing rod. It is a fraction of the model's own height now - the tip moves a few per cent of the tree whatever the tree is, and the base does not move at all. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
15 lines
985 B
Markdown
15 lines
985 B
Markdown
bump: minor
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type: feat
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An aspen leaf hangs on a flattened stalk and turns in air a spruce never feels, and the
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kit had no way to say so. `layer_flutter(l, v)` gives a scatter layer a per-leaf tremble:
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the vertex stage offsets each leaf by a phase taken from its own place on the card, so
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neighbouring leaves are never in step, and writes the result out as a varying the
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fragment stage uses to flash the leaf's pale underside as it turns. The flash is the part
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that reads - a still frame of a tremble is a still frame of nothing. One uniform, one
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varying, no extra pass, and every other layer leaves it at zero.
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Also fixes the sway itself, which was measured in METRES: `hgt * hgt * 0.35` is right for
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a 40 cm flower and puts ten metres of sideways into a 14 m trunk, so every tall tree in
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the valley stood bent over like a fishing rod. It is a fraction of the model's own height
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now, so the tip moves a few per cent of the tree whatever the tree is and the base does
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not move at all.
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