Add Unreal groom and material handoff adapters#195
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This reverts commit bae4c0c.
- send2ue_material_pipeline.py: post_import hook that triggers the Unreal-side material setup (ue_material_setup.process_mesh) over RPC. Pipeline dir resolves from UE_BLENDER_PIPELINE_DIR env var, defaulting to ~/Documents/UE_Blender_Pipeline. - select_all_children: only select children present in the active view layer. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
On file load, setup_project sets scene.send2ue.unreal_mesh_folder_path from the .blend file path so it mirrors the on-disk folder structure: the Forestportfolio anchor maps to /Game/Meshes (e.g. ...\Forestportfolio\00_common\prop -> /Game/Meshes/00_common/prop/). Files outside the anchor are left untouched. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
- Extract path derivation into sync_unreal_mesh_folder_path() and also register it on save_post, so a Save-As into a new folder updates the path (load_post alone missed saves). - Case-insensitive anchor match with a path-boundary check (avoids false matches). - Guard files sitting directly in the anchor folder (no subfolder) so the file name is not turned into a folder. - Wrap the assignment in try/except so a failure never breaks send2ue project setup. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Setting unreal_mesh_folder_path runs send2ue's update callback, which calls is_connected() and UnrealRemoteCalls.directory_exists() over RPC - adding a per-save delay. Now the sync only assigns when the value actually changes and disables window_manager.send2ue.path_validation during the assignment (the same approach set_active_template uses), so saves no longer trigger an Unreal round-trip. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…toggle - armature_modifier_fix: meshes parented to an exported armature but missing an armature modifier now get a temporary single-bone binding during export, so the fbx carries valid skin weights instead of crashing Unreal's importer. Undone in post_operation, so the user's scene is left untouched. Only acts when a modifier is actually missing (unlike the always-on Hair Tool conversion). - hair_tool_export: convert live Hair Tool curve systems to temporary export-only meshes with head-bone skinning and FACE smoothing; filter prepared sources out of groom export. - skip_animation_export: one toggle to skip all animation export and stop the skeletal-mesh fbx from baking the rig's NLA strips. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The PARK send2ue customizations participate in the Blender -> Painter -> Unreal pipeline; point to substance-tools/docs/pipeline_contract.md (and pipeline_contract.json) as the source of truth for the Export collection, naming, and Unreal path conventions. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Add payload UV helpers so the RFAOS hair attributes ride dedicated UV maps for Nanite meshes, simplify the Hair Tool color bake fallbacks in the groom adapter, and ensure hair master material instances keep skeletal mesh usage in the Unreal material setup. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Thank you so much for this huge contribution! When you are ready, please update PR to go If you are interested, I'm also looking for more maintainers that can help me out as I just cant find the time to update for blender 5+ |
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What changed
Why
The Send to Unreal handoff needed a consistent adapter layer for groom assets and safer material setup behavior across export and post-import stages.
Impact
Blender-to-Unreal groom and material transfers now use the same handoff logic, with targeted automated coverage for the updated pipeline.
Validation
python -m pytest -q tests/test_ue_material_setup.py tests/test_send2ue_material_pipeline_extension.py