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fix(ui): D.2b-B — inventory panels render over the backdrop (#145 continuation) + captions

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Visual verification surfaced two render bugs (controller LOGIC was already correct):

1. BACKDROP WASH-OUT (the big one — #145 continuation). The mounted backpack/
   3D-items panels inherited their sub-window root's ZLevel 1000 via the merge's
   zero-wins-base rule. The #145 ZOrder fold (ReadOrder − ZLevel·10000) turned 1000
   into ZOrder ≈ −10,000,000 — sinking the panels BEHIND the frame's Alphablend
   backdrop (ZLevel 100 → ≈ −1,000,000). The backdrop then overpainted the panels'
   captions/burden-meter/cells (the paperdoll root is ZLevel 0 so it escaped, which
   is why the previous session thought #145 was done). Fix: the sub-window mount now
   keeps each slot's OWN frame ZLevel, so panels sit in front of the backdrop.
   Root-caused via a one-shot sprite-segment-order dump (backdrop was painting after
   the panel content) + a live ZLevel probe.

2. CAPTIONS. The caption elements resolve to UiText; driving a nested child UiText
   didn't paint. AttachCaption now drives the host UiText directly.

Locked by InventoryFrameImportProbe (real-dat smoke: asserts each mounted panel's
ZOrder > the backdrop's). Visually confirmed by the user: dark backdrop behind,
Burden 17% + vertical bar + Contents-of-Backpack + full item grid all visible.
Build + App(532)/Core(1526) tests green.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Erik 2026-06-21 17:58:44 +02:00
parent 1ccf07b705
commit 417b1375fd
3 changed files with 108 additions and 3 deletions
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13
src/AcDream.App/UI/Layout/LayoutImporter.cs
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@ -242,8 +242,21 @@ public static class LayoutImporter
// (vitals/chat/toolbar). See ShouldMountBaseChildren + the B-Grid spec.
if (baseChildren is not null
&& ShouldMountBaseChildren(d.Children.Count, self.StateMedia.Count, baseChildren.Count))
{
result.Children.AddRange(baseChildren);
// The mounted slot's layer WITHIN THE FRAME is its OWN ZLevel, not the mounted
// sub-window root's. The gm*UI sub-window roots carry ZLevel 1000 (their standalone
// top-window layer); ElementReader.Merge's zero-wins-base rule made the slot (own
// ZLevel 0) inherit that 1000, and the #145 ZOrder fold (ReadOrder − ZLevel·10000)
// turns 1000 into ZOrder ≈ −10,000,000 — sinking the whole panel BEHIND the frame's
// Alphablend backdrop (ZLevel 100 → ≈ −1,000,000). The backdrop then overpaints the
// panel's captions/meter/cells (the wash-out bug; the paperdoll root happens to be
// ZLevel 0 so it escaped). Restore the slot's own frame-layer so the panel sits in
// FRONT of the backdrop. (B-Controller debug 2026-06-21; continuation of #145.)
result.ZLevel = self.ZLevel;
}
return result;
}