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Claude 27e39993f7 M1+M2: gr2 -> Skeleton3D/ArrayMesh/Skin + libgr2-driven animation 
- gr2_bridge: gr2 Mat4 (row-major) -> Godot Transform3D (4x4 transpose);
  build_skeleton (rest from local_transform, initial_placement folded into
  roots), build_skin (bind i -> bone i, pose = inverse_world), build_mesh
  (surface per gr2 mesh, ARRAY_BONES = skeleton idx via bone_bindings,
  rigid meshes bound to bone_bindings[0]).
- dxt: DDS DXT1/3/5 decoder ported from xrender-poc.
- Metin2Model: load_gr2 -> Skeleton3D + MeshInstance3D + StandardMaterial3D
  (runtime DDS albedo, face/body split by surface name). Z-up cm -> Y-up m
  conversion on the node transform (unit_scale, flip_z, flip_winding props).
- Metin2AnimPlayer: _process samples a (separate) anim .gr2 with
  gr2::sample_pose(model.skeleton, anim, t) -> set_bone_global_pose per bone;
  Godot GPU-skins via skin_matrix = global_pose(i) * bind_pose(i) == gr2
  deformer matrix. selfcheck() NaN-scans all anims.

Verified: warrior_cheongrin renders (75 bones, 5 surfaces, 3324 verts,
textured, upright). dance01 (dur 28.3s, 74 tracks) plays, 0 NaN over 25
samples, distinct poses at t=2/9/16/23. Screenshots in test/golden/.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WaHYEY9rwLWt21PULiYjeJ
 2026-08-29 09:23:29 +09:00
Claude 67109990ec README: record M0' T0.1–T0.3 verified, T0.4 pending export templates 
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WaHYEY9rwLWt21PULiYjeJ
 2026-08-29 09:10:15 +09:00
Claude c52b8657c4 M0' scaffold: Godot 4.7 + GDExtension + libgr2 wired up (macOS) 
- extension/: godot-cpp submodule (master, API 4.7), Metin2Model node
  registered, links xrender-poc/libgr2 via sibling-dir reference.
- project/: Godot 4.7 project — orbit camera + DirectionalLight3D (shadows)
  + WorldEnvironment/procedural sky + placeholder cube; main.gd probes the
  extension and can run libgr2 on a real .gr2 (MTGODOT_PROBE_GR2).
- build.sh one-shot build into project/bin/.
- docs/GODOT-POC-PLAN.md (phased: Phase 1 macOS -> M0'/M1/M2/M2.5).

Verified on this machine:
  [mtgodot] Metin2Model registered OK — libgr2 linked
  probe_gr2(warrior_cheongrin.gr2) -> gr2 OK: format_version=6 sections=8
  Metal Forward+ renders the scene (test/golden/m0-scaffold.png).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WaHYEY9rwLWt21PULiYjeJ
 2026-08-29 09:09:55 +09:00