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[Tydra] USD export: Initial support of exporting skinning data.

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This commit is contained in:
Syoyo Fujita
2024-04-24 06:58:31 +09:00
parent 61a391c72c
commit aa851e2c92
2 changed files with 142 additions and 1 deletions
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103
models/skintest-blender-4.1.usda Executable file
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40
src/tydra/usd-export.cc
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@@ -483,7 +483,29 @@ static bool ToGeomMesh(const RenderMesh &rmesh, GeomMesh *dst, std::string *err)
dst->set_primvar(uvPvar);
}
// TODO: GeomSubset, Material assignment, skel binding, ...
if (rmesh.joint_and_weights.jointIndices.size() && rmesh.joint_and_weights.jointWeights.size() && (rmesh.joint_and_weights.elementSize > 0)) {
GeomPrimvar weightpvar;
weightpvar.set_name("skel:jointWeights");
weightpvar.set_value(rmesh.joint_and_weights.jointWeights);
weightpvar.set_elementSize(uint32_t(rmesh.joint_and_weights.elementSize));
weightpvar.set_interpolation(Interpolation::Vertex);
dst->set_primvar(weightpvar);
GeomPrimvar idxpvar;
idxpvar.set_name("skel:jointIndices");
idxpvar.set_value(rmesh.joint_and_weights.jointIndices);
idxpvar.set_elementSize(uint32_t(rmesh.joint_and_weights.elementSize));
idxpvar.set_interpolation(Interpolation::Vertex);
dst->set_primvar(idxpvar);
// matrix4d primvars:skel:geomBindTransform
GeomPrimvar geomBindTransform;
geomBindTransform.set_name("skel:geomBindTransform");
geomBindTransform.set_value(rmesh.joint_and_weights.geomBindTransform);
dst->set_primvar(geomBindTransform);
}
// TODO: GeomSubset, Material assignment, ...
return true;
}
@@ -935,7 +957,23 @@ bool export_to_usda(const RenderScene &scene,
if (!detail::ExportSkeleton(scene.skeletons[size_t(scene.meshes[i].skel_id)], &skel, err)) {
return false;
}
// Add some skel settings to GeomMesh.
// rel skel:skeleton
Relationship skelRel;
// FIXME: Set abs_path
Path skelTargetPath("/skelRoot" + std::to_string(i) + "/" + skel.name, "");
skelRel.set(skelTargetPath);
mesh.skeleton = skelRel;
// prepend apiSchemas = ["SkelBindingAPI"]
APISchemas skelAPISchema;
skelAPISchema.listOpQual = ListEditQual::Prepend;
skelAPISchema.names.push_back({APISchemas::APIName::SkelBindingAPI, ""});
mesh.metas().apiSchemas = skelAPISchema;
has_skel = true;
}