mirror of https://github.com/storytold/effectcraft.git synced 2026-10-30 04:57:54 -06:00

Files

T

vangel76andClaude Opus 5.5 d37c087975 Transform effect: skew after the rotation and drawn outside the layer, as After Effects

After Effects draws the Transform effect as position + K * R * S * (p - anchor)
with the skew K = rot(-axis) * shearY(tan skew) * rot(axis) applied after the
rotation, and keeps what lands outside the layer's bounds. EffectCraft skewed
before rotating (shearX about the axis) and clipped to the layer.

Measured in AE 2026 on a grey 960x540 solid (cases 723, 819, 820): 723 (anchor,
position, scale 120/80, skew 10 axis 20, rotation 30, opacity 70) differed in
11.25 % of the frame and now in 0.065 % (edges, max 16/255), CPU and GPU alike;
819 / 820 (skew 15 axis 60, rotation -25, scale 130/70, anchor) match to the
edge. The buffer grows on each side by that side's overshoot (also for the
motion-blur samples), capped at 16 384 px a side and 16 Mpx in all so a layer
moved far away costs a bounded allocation (regression test); adjustment layers
keep their size.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-19 16:25:44 +02:00

7.5 KiB

Raw Blame History

Effects parity

Last reviewed: 2026-10-12 · Last updated: 2026-10-12 · Change: minor (effect colour labels; earlier change: parameter count and closed issue references re-audited against upstream/main 470ea7a3 and the generated effects.md) · Target: Adobe After Effects 2026

Effects are the deepest single area of After Effects. This page separates the four questions that a single "306 of 306" hides: does each effect exist, does it run fast, does it look like After Effects', and does the preset library exist. The per-effect catalogue is the generated effects.md; the overall numbers are in target-app-parity.md.

Summary

Question	Value	Kind
Effects present	306 registered, 3,017 parameters; all of After Effects' effects by name (298 at the M9.11 count) plus Obsolete and our own	Measured: registry, effects.md. After Effects 26.5's `Plug-ins/Effects` holds 306 `.plugin` bundles in 231 entries (one bundle can hold several effects, so this is a cross-check, not a match)
Parameter names, order, popups, units, defaults	aligned in M9.12	Agent-checked against After Effects' documentation, not against a live dump
On the GPU	280 (92%)	Measured: registry flags; GPU vs CPU agreement tested per effect
32-bit float, no clamping	306	Measured: registry flags
Rendered output matches After Effects	unmeasured	No effect is compared with an After Effects render yet. `effectcraft_effects::fidelity::compare_frames` exists for the corpus (fidelity/README.md); simulation effects are pinned by golden hashes of our own output (M13.27)
Animation presets	54 original presets (8 text-animator, 23 Transitions, 23 Backgrounds) against After Effects' 621 `.ffx` presets	Measured: `crates/engine/presets/text_animators.json`, `crates/engine/presets/transitions.json`, `crates/engine/presets/backgrounds.json`; the After Effects `Presets` folder
26.x additions	Curl Noise (26.3) present (#463 open); effect colour labels (26.5) present in Effect Controls only, not in the Timeline; the rebuilt Effect Controls (26.5) missing	Release notes

Breadth ≈ 85% (presets weigh in; the effects themselves are ≈ 100%). Ready ≈ 40%: until a corpus compares renders, each effect is assumed to differ somewhere, and users keep confirming it.

By category (from effects.md)

Category	Effects	On the GPU	Known differences or bugs
3D Channel	8	8	Cryptomatte selection can't be set in the UI and the GPU path is slow (#473; quoted names with commas fixed); multi-layer EXR decode shared (#474 open: f16 storage and cache sizing remain)
Audio	13	0	CPU by design (applied in the mixdown)
Blur & Sharpen	16	15	Radial Blur keeps the layer edges as After Effects 2026 (713 now pixel-identical); Gaussian Blur interaction and output to be measured first (fidelity/ae-2026-acceptance.md)
Channel	13	13	—
Color Correction	40	40	Tint has Swap Colors (#963); ACES 2.0 / OCIO 2.5 (26.5); Apply Color LUT (#514) and 32-bpc blending (#494) are closed
Distort	39	35	Transform matches After Effects 2026 renders (skew after rotation, drawn outside the layer); Liquify has no viewer brush; #303 (Mesh Warp drag) and #534 (CC Power Pin Unstretch) are closed
Expression Controls	9	9	—
Generate	26	25	Fractal on the CPU (needs f64); #526 (Reset) and #536 (Write-on marks) are closed
Immersive Video	12	12	—
Keying	12	12	Key Cleaner approximated; #533 (wire-removal Frame Offset) is closed
Matte	6	4	Mocha shape reads our documented JSON, not Mocha's format
Noise & Grain	13	12	Fractal / Turbulent Noise lattice matches After Effects 2026 (Scale 100 = 66.7 px cells); the noise values themselves differ (seeds) and Soft Linear contrast is about 20 % lower than AE's; Curl Noise (#463); Match Grain on the CPU
Obsolete	9	9	—
Paint	1	0	Tablet pressure not read (hardware-parity.md)
Perspective	10	9	Chromatic Aberrations pan/tilt crash (#580)
Simulation	18	18	Particle Playground lacks Particle Exploder, text particles, ephemeral mapper; CC Particle World camera fixed (#397)
Stylize	25	25	Glow's halo (coverage of a dim layer's edge) and blur width match After Effects 2026 renders; glows above the threshold match too (each channel 8 × (value − threshold + 0.061), measured at three thresholds and two radii); Composite Original's labels are swapped against After Effects (EffectCraft's On Top adds the glow over the original, which After Effects calls Behind); Motion Tile output size (#369)
Text	2	2	—
Time	8	8	#535 (Pixel Motion Blur, Vector Detail) is closed
Transition	17	17	Venetian Blinds matches After Effects 2026 renders (band phase from the layer centre, Gaussian feather on both edges) except within ~6 px of the layer edge (up to 48/255); Radial Wipe's Feather matches After Effects 2026 (a Gaussian of σ = 0.4 × Feather pixels on both edges of the wedge)
Utility	9	7	—

Third-party bundles in After Effects (Cineware, Mocha AE) are out of scope; Keylight is implemented under a generic name ("Key Light").

Estimate

≈ 70–130 h: a fidelity corpus case per effect at default and one non-default setting, compared with After Effects renders, and the fixes they turn up (40–80 h, most of it parallel, but every reference render needs After Effects on the owner's Mac); an original preset library covering After Effects' preset categories (Behaviors, Shapes, Synthetics, Text, Image effects remain; Backgrounds and Transitions exist) 15–35 h; the open effect bugs 10–20 h. Moving Fractal and the analysis effects to the GPU is performance, not parity.

Revision history

Date	Change	Summary
2026-10-19	minor	Glow (original colours): bright pass per channel, 8 × (value − threshold + 0.061), measured against After Effects 2026 (CPU and GPU)
2026-10-19	minor	Glow (colour channels): the glow covers the layer's blurred alpha, blur σ = 0.384 × radius, measured against After Effects 2026 renders (CPU and GPU)
2026-10-19	minor	Radial Blur repeats the edge instead of sampling transparency outside the layer, measured against After Effects 2026 renders (CPU and GPU)
2026-10-19	minor	Venetian Blinds: stripes measured from the layer centre, both band edges Gaussian (σ = Feather / 2), measured against After Effects 2026 (CPU and GPU)
2026-10-19	minor	Radial Wipe: Feather is in pixels on both edges of the wiped wedge (was degrees on the moving edge only), measured against After Effects 2026 (CPU and GPU)
2026-10-19	minor	Fractal / Turbulent Noise: lattice cell = Scale × 2/3 px (Block noise every 66.7 px at Scale 100, as After Effects 2026), CPU and GPU
2026-10-19	minor	Transform: After Effects' skew order and output beyond the layer bounds, measured against After Effects 2026 renders of three cases (CPU and GPU)
2026-10-12	minor	Parameters 3,014 to 3,017 (effects.md); #303, #514, #526, #533–#536 marked closed instead of pending
2026-10-12	minor	Effect colour labels (26.5) added in Effect Controls
2026-10-12	minor	Tint's Swap Colors button and agent-drivable command (#963); undo/redo, instance targeting, animated layer-time edits and invalid-input tests
2026-10-10	major	First effects parity checklist

7.5 KiB Raw Blame History Unescape Escape