Text is vector in After Effects and stays sharp at any Scale. Here a
text layer was drawn at its font size and the bitmap resampled by Scale
unless Continuously Rasterize was on, so text grown with Scale went soft.
This reworks #200 (reverted in 29c4d3a for kinetic_typography).
Why kinetic_typography failed: its time remap key at 1.9 s sits on
frame 23 (1.917 s), so main-comp 0.3 s shows the precomp at 1.6026 s,
but the test compared it with the precomp rendered at 1.6 s. The moving,
motion-blurred title already differed by 0.89 of the 1.0 mean-difference
budget on main (0.987 in all); with continuous rasterisation the "Sub"
line, whose expression scale is 84.00 % at 1.6 s and 84.105 % at
1.6026 s, falls on either side of the 2^-1/4 quarter-octave step and was
drawn at 0.84 at one time and at 1.0 at the other, pushing the total to
1.075.
Fix: raster_scale treats text layers as always continuously rasterised
(shape layers and vector footage still follow the switch), and rounds
the quarter-octave step up past rounding noise only: an unscaled layer
at a fractional position measured its scale as 1 + 1e-15 and was
rasterised at 2^1/4, softening unscaled text. The QA test now compares
the remapped precomp with the precomp at the time the remap really
shows (read back from the property): difference 0.63, all of it the
title's motion blur, the Sub line identical.
Tests: tests_collapse::text_scaled_up_stays_sharp_without_the_switch
(from #200: 10 px text at 800 % matches 80 px text),
tests_collapse::unscaled_text_rasterises_at_the_output_scale (fails
without the noise tolerance), automation qa kinetic_typography.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The QA test's time-remapped precomp no longer matches the precomp rendered
directly (crates/automation/tests/qa/kinetic.rs:78); FreeBSD CI has been red
since. Reverting until the PR is reworked against that test.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A text layer was drawn at its font size and the bitmap resampled by the
layer's Scale unless its Continuously Rasterize switch was on, so text
grown with Scale (the usual way to animate it) went soft. Text layers now
always rasterise at their on-screen scale, as they would with the switch;
shape layers and vector footage still follow the switch.
Text at 10 px scaled 800% now renders identically to text set at 80 px
(795 partially covered pixels each, maximum difference 0; it was 5854
against 795 before).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Collapsed precomps draw their layers straight into the parent with
concatenated transforms and multiplied opacity (nested blend modes and
adjustment layers act on the parent); a non-Normal mode, track matte or
Preserve Transparency composites the collapsed result as a whole; masks,
effects or styles force a flattened render. Nested 3D layers use the
parent's camera and lights and join the parent's 3D run when the precomp
layer is 3D. Continuously Rasterize re-rasterises text and shape layers at
their on-screen scale. Draft quality samples nearest-neighbour, Wireframe
draws the layer bounds. layer.slip / slipBack (Alt+PageUp) / slipForward
(Alt+PageDown) and dragging the timeline source bar slip the source under
fixed in/out points, clamped to the source duration; undoable.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
