zwitschi
1c6b956435
- Static-mesh scale test passes: 1 m = 100.00 cm, origin preserved, axis mapping east→+X / north→−Y / up→+Z (named presets ue_metric_v1 both sides). - MPFB 2.0.18 acceptance passes: generated human + standard 137-bone rig with weights + v2 skin baked to 1024² diffuse; imports as SkeletalMesh with Skeleton, Material, and Texture2D in /Game/Test/Character. - MPFB headless requires XDG_CONFIG_HOME at the Flatpak config tree; documented in Art/blender/README.md, probe in Tools/addon_compat_probe.py. - Docs/build.md completed: fresh-checkout build, packaging, headless checks. - Docs/setup.md reconciled with reality; ROADMAP/bootstrap closed out.
54 lines
6.4 KiB
Markdown
54 lines
6.4 KiB
Markdown
# Toolchain
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Pinned versions for this project. Record the exact build string a tool reports, not just the version family, and re-record it after every upgrade. The most common cause of scale, material, and import mismatches is silently mixing two versions of the same tool.
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Audited 2026-11-06, updated 2026-11-07 on the development workstation.
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## Pins
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| Component | Pinned | Source | Status |
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| --- | --- | --- | --- |
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| Bazzite | `45.20261105` (Kinoite, `bazzite-dx-nvidia`), kernel `7.2.15-ogc1.1.fc45` | `ujust update` / `rpm-ostree upgrade` | Booted and default. `44.20261026` retained as rollback. |
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| NVIDIA driver | `615.78.08`, open kernel module | Bazzite image | Verified: desktop session renders through the RTX 5070 Ti; Vulkan GPU0 is the RTX 5070 Ti on driver `615.78.08`, conformance `1.4.3.3`. |
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| Unreal Engine | `5.8.4` — CL 58902052, `++UE5+Release-5.8`, promoted build | Epic download | Fully extracted to `/run/media/system/DATA/Engines/UE_5.8.4` (73 GiB on disk). **Validated 2026-11-07:** headless `-NullRHI` smoke test and full editor GUI launch with Vulkan RHI on the RTX 5070 Ti (loader 1.4.350, `VULKAN_SM5`, map check 0 errors). Pin is final. The verified 5.2.0 archive stays as fallback. |
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| Unreal Linux toolchain | system `clang 23.1.4` (Fedora 45) | `rpm-ostree` layer | This 5.8.4 build ships **no** bundled Linux clang (no `clang++` anywhere in the engine tree, verified 2026-11-07); UBT compiles game code with the system toolchain. **Accepted 2026-11-07:** first game-module compile and link succeeded (`GigLineEditor` target, `libUnrealEditor-GigLine.so`). Note: game targets must use `BuildSettingsVersion.V7` to share the engine's build environment. |
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| Blender | `5.2.0` LTS (build 2026-07-14) | Flatpak `org.blender.Blender` | Installed. Run headless from the app tree with `LD_LIBRARY_PATH` + `BLENDER_USER_SCRIPTS`; `flatpak run` is unavailable to the agent shell. |
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| MPFB | `2.0.18` (extension `bl_ext.blender_org.mpfb`, `blender_version_min 4.2.0`) | Blender extensions platform | Installed. **Headless-verified 2026-11-07 on 5.2:** enables and generates a default human (19 158-vert mesh, UVs) via `Tools/addon_compat_probe.py`. Headless runs must set `XDG_CONFIG_HOME=$HOME/.var/app/org.blender.Blender/config` or the extension is not discovered (see `Art/blender/README.md`). Load-and-export (skeleton + baked materials) check still pending. |
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| Blosm | `2.7.28` (legacy add-on, `bl_info.blender = (4, 5, 0)`, manifest min 4.2) | blosm.com | Installed and importing on Blender 5.2 in `3Dsimple` mode. Two headless workarounds are required; see `Art/blender/README.md`. Paid material asset pack lives in `~/Downloads/blosm-assets/` and is not committed. |
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| QGIS | `4.2.3`, Flatpak `stable`, runtime `org.kde.Platform 6.11`; bundled PROJ `9.9.0` | flathub | Installed 2026-11-06. Stale `lts` branch (`3.28.9`, EOL Qt5 runtime) uninstalled 2026-11-07; only `stable` remains. |
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| Git | `2.56.0` | Bazzite image | Installed. |
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| Git LFS | `3.7.1` | `rpm-ostree` layer | Installed; `git lfs install` run, lfs filter active. |
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| Host build tools | `clang 23.1.4`, `cmake 4.3.0`, `ninja 1.13.2` | `rpm-ostree` layer | Installed. These are host tools, not the engine toolchain. |
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| distrobox | `1.8.2.5` | Bazzite image | Installed. |
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| Python (tooling) | `3.14.8` system | Bazzite image | Installed. Use a venv for geo/tool scripts. |
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| ffmpeg | `8.1.3` | Bazzite image | Installed. |
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Unreal Engine 5.9 is in preview and Unreal Engine 6 has been announced as of November 2026. Neither is a pin candidate for `0.x`. One engine family per milestone; a family change is a breaking change and belongs in `CHANGELOG.md`.
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## Agent skills
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| Item | Value |
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| --- | --- |
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| Package | blender-skills `1.3.0`, upstream commit `8f778d2`, MIT |
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| Source | <https://github.com/arjun988/blender-skills> |
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| Location | `.agents/skills/blender-skills/` — 94 skills plus a shared `references/` directory, 269 Markdown files, 1.2 MB |
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| Installed | 2026-11-06, copied from a local checkout of `.claude/skills/` without edits |
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These are instructions and reference notes for agents, not code that runs in a build. Four of them assume a **Blender MCP server**; this project drives Blender headlessly through `bpy` (`Tools/*.py`) instead, so MCP is optional and nothing depends on it.
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To update: copy `.claude/skills/` from a newer upstream checkout over the existing directory, then record the new version and commit hash in this table. Skills are read on demand, so the harness catalog may need a reload before they appear as first-class entries.
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## Pin rules
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- One engine build per release. Record the launcher or source build, the patch version, and the build date in this file and in the release entry.
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- Blender stays on an LTS family (`5.2`). Every add-on version used for a shipped asset is recorded here.
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- Upgrading a pinned tool mid-milestone requires re-running the scale test and the Blender→Unreal import check before further asset work.
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- Never install a tool from an unverified source. Record the download origin next to the version.
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## Open compatibility risks
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1. **Blosm on Blender 5.2 — worked around, not resolved.** `3Dsimple` import works headless (see the blockout). Two headless-only defects are patched around in the script rather than in the add-on: an asset-directory check that fires before `mode` is honoured, and a background-mode import path that uses a broken relative import when the default level table is empty. `3Drealistic` mode has not been exercised; it loads the paid material pack and previously failed inside the realistic renderer setup. If realistic materials are wanted, test that mode separately before depending on it.
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2. **MPFB 2.0.18 on Blender 5.2.** The extension declares Blender >= 4.2 but predates 5.x. Generation verified 2026-11-07: `mpfb.create_human` works headless once `XDG_CONFIG_HOME` points at the Flatpak config tree. Remaining acceptance test is the `0.1.0` requirement to export one MPFB character with baked materials and a deform skeleton and import it into Unreal.
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3. **QGIS 4.x recipes.** Only `stable` (4.2.3) is installed now; the old `lts` was removed 2026-11-07. QGIS 4.x uses Qt6, so any processing recipe copied from a 3.x tutorial needs re-checking before it is trusted.
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4. **Driver and Vulkan validation on Bazzite.** Not an officially supported Unreal distribution. The engine install itself is proven (full init headlessly); only the Vulkan RHI on the RTX 5070 Ti is unproven, and one desktop-terminal run settles it.
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