vangel76andClaude Opus 5.5 f4fbdc6c25 Glow: the glow covers the layer's blurred alpha, blur sigma 0.384 x radius, as After Effects ...

With Glow Based On Color Channels, After Effects gives the glow the layer's whole
alpha (blurred), not the thresholded part, and Intensity scales only its colour:
a layer below the threshold darkens what lies under its edge. Fitted to AE 2026
renders of a grey solid over red (cases 524, 807-809): the halo is the same at
Intensity 1 and 3 and with Composite Original Behind or On Top, and its edge is
an erfc step of sigma = 0.384 x Glow Radius at radius 10 and 30 (was radius / 2).

524 (Glow defaults on a 50 % grey solid): EffectCraft had no halo (max 116/255
off at the edge); now red 248/234/208/165/140 at 7.5/5.5/3.5/1.5/0.5 px outside
vs AE 249/235/206/164/140, max 2/255 over the frame, CPU and GPU. The blur
width applies to every glow; alpha-based glows keep their coverage rule
(thresholded alpha, scaled by Intensity). Not matched yet: the brightness of glows above the
threshold (AE about 3.7 x brighter for a white solid, cases 806, 810, 811).

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

2026-10-19 16:23:25 +02:00

..

src

Glow: the glow covers the layer's blurred alpha, blur sigma 0.384 x radius, as After Effects

2026-10-19 16:23:25 +02:00

Cargo.toml

fix: contain GPU initialization and retire failed readbacks

2026-10-06 16:40:12 -05:00