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日本語 (Japanese)

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[1.5.0] - 2026-04-05

Added

  • Preset Management: Added a preset dropdown at the top of the tool UI that allows users to save, load, and delete channel packing configurations. Includes built-in presets for common workflows:
    • ORM (default): R=Ambient Occlusion, G=Roughness, B=Metallic — suffix _ORM
    • MRA: R=Metallic, G=Roughness, B=Ambient Occlusion — suffix _MRA
    • Custom: Automatically selected when the user manually changes settings.
  • Preset Persistence: User-created presets are saved as individual JSON files in Saved/TextureChannelPacker/Presets/, enabling easy sharing of configurations across team members.
  • Dynamic Channel Labels: Channel input labels now update automatically when switching presets, reflecting the expected texture type for each slot (e.g., "Red Channel Input (e.g. Metallic)" for MRA).
  • Preset-Aware Filename Suffix: The auto-generated output filename now uses the active preset's suffix (e.g., _ORM, _MRA, _Packed) instead of the hardcoded _ORM.

Changed

  • Scrollable UI with Pinned Generate Button: The tool window content is now wrapped in a scroll view, and the "Generate Texture" button is pinned to the bottom of the window. This ensures the button is always visible regardless of window size.

[1.4.0] - 2026-03-01

Added

  • 16K Resolution Support: The maximum output resolution has been increased from 8192 to 16384 to accommodate limitations of DirectX 11 and OpenGL 4.1 and later.
  • Memory Warning Dialog: Added a warning dialog asking for user confirmation when attempting to process textures with a resolution exceeding 8192, as it may consume a very large amount of memory.

[1.3.0] - 2026-02-23

Added

  • Invert Toggle: Added a per-channel Invert checkbox next to each input slot label. When enabled, the channel values are flipped (255 - Value), useful for conversions like Roughness to Smoothness.
  • Non-Square Output: Width and Height can now be specified independently, replacing the single Resolution field. This enables non-square packed textures for use cases like UI atlases.
  • Overwrite Confirmation: A confirmation dialog now appears when the output asset already exists, preventing accidental data loss.

Changed

  • Compression Settings Refactor: Migrated internal compression option handling from string-based comparison to an enum/struct-based architecture (FCompressionOption), improving maintainability and localization safety.

[1.2.0] - 2026-01-25

Fixed

  • Memory Leak: Addressed an issue where UPackage objects were not properly garbage collected when texture generation was cancelled or failed. Implemented RAII using TStrongObjectPtr and proper cleanup logic.

[1.1.0] - 2026-01-16

Added

  • Parallel Processing: Implemented multi-threaded processing for texture channel resizing and conversion using ParallelFor, improving generation speed.
  • Cancellable Progress: Added a progress dialog with a cancel button, allowing users to abort the texture generation process.
  • Extended Format Support: Added support for TSF_RGBA32F (Linear Color) input textures.

[1.0.1] - 2025-12-09

Fixed

  • Smart Naming: Fixed an issue where auto-generation would overwrite manually edited filenames. It now respects user input.
  • Color Space: Forced SRGB = false on generated textures to ensure correct linear values for packed channels.
  • Packaging: Added PlatformAllowList to .uplugin to prevent packaging errors on mobile platforms.

Changed

  • Fab Preparation: Updated .uplugin metadata (EngineVersion, Installed) for Fab store submission.
  • License: Updated Copyright year to 2026.

[1.0.0] - 2025-12-08

Added

  • Core Features
    • RGBA Channel Packing (Supports Red, Green, Blue, and optional Alpha inputs).
    • Auto-Resizing of input textures to match target resolution using high-quality bilinear interpolation.
    • Smart File Naming: Automatically generates output filenames based on input texture names.
  • UI & UX
    • Path Picker button for easy output directory selection.
    • Compression Settings dropdown (Masks, Grayscale, Default).
    • Toast Notifications for success/error feedback.
    • Drag & Drop support for texture slots.
    • Full UI Localization (English/Japanese) based on Editor language.
  • Technical Improvements
    • Extended Format Support: Handles 8-bit, 16-bit Grayscale, and 16/32-bit Float (SDF) textures.
    • Memory Optimization: Reduced peak memory usage during packing of large (e.g., 8K) textures.
    • Performance: Implemented lazy allocation for pixel data processing.
    • Validation: Enforced resolution limits (1-8192) and input checks.