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radialmonsterandClaude Opus 5.5
953c4ee5fc
Lightroom Classic's HDR and panorama merges of monochrome raws store a one-plane LinearRaw image as lossy (XYB) JPEG XL tiles whose codestream declares a grey colour encoding (16-bit float with a linear curve, or 16-bit integer with the sRGB curve). Those were refused as "lossy JPEG XL tile with a single colour plane", so the files opened preview-only. A lossy grey tile is still coded as three XYB channels. It is now restored like the RGB case: jxl-oxide renders linear sRGB (never the declared encoding, which would clip), the single plane is the luminance (CIE Y, D65) of that, then the declared transfer curve is applied. One plane must be declared grey and three RGB; HDR curves, other white points and intensity targets above 255 stay unsupported. RENDER_CACHE_VERSION 70 -> 71: files that showed their embedded preview before render from raw data now, under the same content key. Refs #275 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014ti8KemZbjE2ZgHgV1q1BM