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Scott MacdonaldandClaude Opus 5.5
590bec7998
A Displace smart filter (Fltr class `Dspl`, filterID 1148416108) was not in the modelled filter list, so it became psd.unsupportedFilter and rendered as a pass-through. Mockup PSDs that bend a replaceable design over fabric (a design smart object with Displace then Gaussian Blur) rendered flat. Photoshop stores the displacement map inside the filter: `DspD` (raw data) holds u32 LE height, u32 LE width, u16 LE mode 3, then two 8-bit planes (horizontal, vertical) and padding, next to HrzS/VrtS (scale %), DspM (StrF stretch / Tile), UndA (RptE repeat / WrpA wrap), EmbF and DspF (an alias to the author's map file, usually unavailable). The filter now maps to filter.distort.displace. As for Camera Raw, the whole item (with the map) is kept as hex in `__displacePsd`, so it re-renders, survives .pcraft and is written back to PSD with only the editable settings and blending replaced. params_for resolves the embedded map, so the smart filter re-render applies it, stretched over the document canvas (the bounds smart filters already pass). Another mode, a missing or truncated map, or unknown enum values keep the item opaque as before. The map parser uses checked sizes and caps maps at 2^26 pixels. Tests: displace_map unit tests (layout, every truncation, hostile and corrupted headers, round trip, edited settings, opaque fallbacks, bad exports) and smart_psd::displace_psd_filter_renders_with_its_embedded_map (8/16/32-bit: renders displaced, PSD export/import and .pcraft keep it). Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>