mtgodot-poc

31 Commits 1 Branch 0 Tags

2 Commits

Include renames

Author	SHA1	Message	Date
Claude	f4917a2b3b	Fix cull mode + isolate head-collapse to a libgr2 curve bug Rendering fixes (real): - m2_material shaders: cull_disabled -> cull_back (inside-of-mesh faces were z-winning and darkening/hiding the head under the ShaderMaterial path). - drop `* COLOR` from the shader (meshes carry no ARRAY_COLOR). Animation: convert gr2 global poses to Godot local bone poses and set via set_bone_pose (was set_bone_global_pose). MTGODOT_VERIFY=1 confirms get_bone_global_pose(i) == conv(world[i]) for all 75 bones (<=2.6e-5). Head/upper-armor collapse on dance_1 is NOT a Godot-route bug: - reproduced identically in xrender-poc's bgfx demo at the same anim/t - reproduced by the new MTGODOT_CPUSKIN=1 reference path (same LBS math as xrender's validated skin_mesh) - `general/wait` / `run` render correctly in all three => upstream libgr2 Curve::eval (degree-2 quaternion B-spline) vs Granny. Demo default animation switched to general/wait; documented in MIDREVIEW §4 and README. Debug scaffolding gated behind MTGODOT_VERIFY / MTGODOT_CPUSKIN. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WaHYEY9rwLWt21PULiYjeJ	2026-08-29 10:47:01 +09:00
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

Author

SHA1

Message

Date

Claude

f4917a2b3b

Fix cull mode + isolate head-collapse to a libgr2 curve bug

Rendering fixes (real):
- m2_material shaders: cull_disabled -> cull_back (inside-of-mesh faces were
  z-winning and darkening/hiding the head under the ShaderMaterial path).
- drop `* COLOR` from the shader (meshes carry no ARRAY_COLOR).

Animation: convert gr2 global poses to Godot *local* bone poses and set via
set_bone_pose (was set_bone_global_pose). MTGODOT_VERIFY=1 confirms
get_bone_global_pose(i) == conv(world[i]) for all 75 bones (<=2.6e-5).

Head/upper-armor collapse on dance_1 is NOT a Godot-route bug:
- reproduced identically in xrender-poc's bgfx demo at the same anim/t
- reproduced by the new MTGODOT_CPUSKIN=1 reference path (same LBS math as
  xrender's validated skin_mesh)
- `general/wait` / `run` render correctly in all three
=> upstream libgr2 Curve::eval (degree-2 quaternion B-spline) vs Granny.
Demo default animation switched to general/wait; documented in MIDREVIEW §4
and README. Debug scaffolding gated behind MTGODOT_VERIFY / MTGODOT_CPUSKIN.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WaHYEY9rwLWt21PULiYjeJ

2026-08-29 10:47:01 +09:00

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