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Tritone: Rec. 601 luminance, as After Effects

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After Effects' Tritone weighs the working-space values with Rec. 601 (0.299,
0.587, 0.114), as its Tint does; EffectCraft used Rec. 709. Case 718 (red solid,
Highlights [1,1,0.8], Midtones [0.6,0.2,0.2], Shadows [0,0,0.3], Blend 25):
AE (132, 23, 46), EffectCraft was (113, 16, 49), now (132, 23, 46). On a grey
ramp (case 815) the shadows / midtones / highlights mapping already matched and
still does within 1/255. CPU and GPU (fx_color op 4).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
vangel76
2026-10-19 16:13:41 +02:00
co-authored by Claude Opus 5.5
parent fb16d5573e
commit 960f41d50b
5 changed files with 38 additions and 10 deletions
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docs/effects-parity.md
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@@ -30,7 +30,7 @@ corpus compares renders, each effect is assumed to differ somewhere, and users k
| Audio | 13 | 0 | CPU by design (applied in the mixdown) |
| Blur & Sharpen | 16 | 15 | Gaussian Blur interaction and output to be measured first ([fidelity/ae-2026-acceptance.md](fidelity/ae-2026-acceptance.md)) |
| Channel | 13 | 13 | — |
| Color Correction | 40 | 40 | Tint has Swap Colors (#963) and matches After Effects 2026 renders of primary and grey solids (Rec. 601 luminance); ACES 2.0 / OCIO 2.5 (26.5); Apply Color LUT (#514) and 32-bpc blending (#494) are closed |
| Color Correction | 40 | 40 | Tint and Tritone match After Effects 2026 renders (Rec. 601 luminance); 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 | 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 |
@@ -64,6 +64,7 @@ the GPU is performance, not parity.
| Date | Change | Summary |
|---|---|---|
| 2026-10-19 | minor | Tritone uses Rec. 601 luminance, measured against After Effects 2026 renders of a red solid and a grey ramp (CPU and GPU) |
| 2026-10-18 | minor | Tint uses Rec. 601 luminance weights, measured against After Effects 2026 renders of red, green, blue and grey solids (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 |