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Roadmap

[!IMPORTANT] The roadmap is ordered by what most improves trust, compatibility, and first-run success for artists using the stable plugin.

P0: Stabilize 1.0 Follow-Up

• Document the final SDF output channel layout and island-mirror behavior for the current CPU path.
• Publish a stable 1.0 release with release notes and install verification steps.
• Stabilize Windows pen-display/tablet hover, pressure radius, 2D Canvas input, Quick Stroke preview, and pen-based Ctrl + F brush resizing.
• Refresh README, docs, GitHub Pages pages, generated concept diagrams, and screenshot requirements.
• Improve the UV-dependent brush-size mismatch.
• Add a short end-to-end video showing mask paint -> SDF texture -> toon shader result.

P1: Improve Performance and Compatibility

• Enable a preview-only GPU JFA path for Live SDF material feedback.
• Evaluate whether GPU JFA should support final saved generation after it can match CPU output quality and packing behavior.
• Benchmark 1K, 2K, and 4K mask workflows.
• Verify UE 5.8+ compatibility and update release notes when a tested engine version is added.

P2: Deepen Painting Workflow

• Import custom brush alpha textures.
• Add richer brush presets and optional custom brush falloff controls.
• Add explicit previous/next timeline toolbar buttons if keyboard navigation is not enough for artists.
• Add autosave/hot-reload recovery for unsaved mask changes.

Planned Feature Requirements

[!NOTE] These are roadmap requirements for future work. They are not included in the v1.0 stable release and do not change the current C++ API, UQuickSDFAsset format, Slate UI, shortcuts, or asset formats unless a future release explicitly says so.

Quick Nose

• Add Quick Nose as a non-destructive vector layer for quickly placing a nose-shadow preset from a single artist-picked nose position.
• Presets should be editable through position, rotation, scale, curve shape, and control points, so the result is a fast starting point rather than a locked final shape.
• Baking should support the current mask or a multi-mask range, be undoable, and preserve the original vector layer for later edits.

Quick Reshape

• Treat Quick Reshape as a tentative name for a higher-level boundary authoring workflow. Artists draw multiple Boundary Line curves on one non-destructive UV-canvas guide layer, then assign each curve to a timeline angle with Assigned Angle.
• Each boundary line represents the light/shadow split for its assigned mask. Bake Matching Angles should generate or update only the masks whose angles are assigned to boundary lines, not every timeline mask.
• Store boundary lines as editable vector data so their position and curve shape can be refined after baking and baked again later.
• Choose the white/black fill side with Auto Side by default, inferred from the angle and line direction, and allow per-line correction with Invert Side.
• A valid boundary line should either split the active UV island or form a closed region. Ambiguous partial lines should warn before baking, and fills should stay constrained to the active UV island.
• Keep Quick Reshape separate from Stroke Auto Fill: Stroke Auto Fill is a single-line fill helper, while Quick Reshape creates masks from a multi-angle boundary plan.
• Allow Monotonic Guard to validate Quick Reshape output during or after baking so repeated transitions can be caught.

Threshold Map Reverse Conversion

• Add a reverse-conversion workflow that can reconstruct or preview an angle-specific mask from a completed threshold map by entering a target light angle.
• Support at least preview, extraction to the current mask, and extraction to a new mask so artists can inspect or repair completed threshold maps.
• Clarify how Monopolar and Bipolar threshold maps are interpreted during reverse conversion.

Mask Freeze

• Add a Mask Freeze workflow to reduce VRAM usage by releasing paint render targets for masks that are not actively being edited.
• Frozen masks should keep authored data as asset-backed mask data or CPU/disk-backed saved texture data, while transient PaintRenderTarget data can be discarded until needed.
• Provide actions for freezing the current mask, freezing all inactive masks, thawing the current mask, and thawing all masks.
• Automatically thaw any frozen mask that becomes part of a multi-mask edit.
• Timeline keys should show frozen/unfrozen state with a badge.
• SDF generation, export, save, and overwrite-source workflows must transparently thaw or read frozen masks so output does not silently omit frozen data.
• Undo/Redo should not lose mask data across freeze/thaw operations.

Stroke Auto Fill

• Add Stroke Auto Fill so a drawn line can preview and fill the chosen left/right side or inside/outside region.
• Support both current-mask edits and bulk application through All / Before / After.
• Limit fill operations to the active UV island to avoid accidental fills across unrelated islands.
• Show a preview before committing the fill, and make the committed result undoable.