HDR to SDR v3.1.5
What's new
- Real 3D LUT color pipeline: color conversion now runs through a proper BT.2020→BT.709 3D LUT on both the CPU and GPU tonemapping paths, replacing the previous approximate gamut math with more accurate color reproduction.
- "Accurate GPU Color" is now a permanent per-batch-item setting, and it now applies to every tonemapper instead of only GPU-only ones.
- Improved logging: rate-limited error logging, a persistent log file, and clearer warnings.
- The app now notifies you when a Dolby Vision profile 5 source overrides the GPU toggle.
Fixes
- Fixed preview accuracy bugs where the GPU preview cache could serve stale or incorrect frames (prewarm cache poisoning and cache-key mismatches).
- The CPU LUT filter now uses tetrahedral interpolation for smoother color results.
- Corrected the LUT generator's transfer curve and grid resolution.
- Fixed LUT filter path handling so paths containing backslashes on Windows no longer break the filter.
- Improved tooltip text for GPU export color correction options.
Full Changelog: v3.1.4...v3.1.5