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Check that normal count and tangent count matches vertex count. Ignore data and warn if counts don't match.

pull/3670/head
Max Vollmer (Microsoft Havok) 2021-02-24 14:19:29 +00:00
parent 3c79b12e02
commit facb7da701
1 changed files with 21 additions and 13 deletions
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34
code/AssetLib/glTF2/glTF2Importer.cpp
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@ -452,24 +452,32 @@ void glTF2Importer::ImportMeshes(glTF2::Asset &r) {
}
if (attr.normal.size() > 0 && attr.normal[0]) {
attr.normal[0]->ExtractData(aim->mNormals);
if (attr.normal[0]->count != aim->mNumVertices) {
DefaultLogger::get()->warn("Normal count in mesh \"" + mesh.name + "\" does not match the vertex count");
} else {
attr.normal[0]->ExtractData(aim->mNormals);
// only extract tangents if normals are present
if (attr.tangent.size() > 0 && attr.tangent[0]) {
// generate bitangents from normals and tangents according to spec
Tangent *tangents = nullptr;
// only extract tangents if normals are present
if (attr.tangent.size() > 0 && attr.tangent[0]) {
if (attr.tangent[0]->count != aim->mNumVertices) {
DefaultLogger::get()->warn("Tangent count in mesh \"" + mesh.name + "\" does not match the vertex count");
} else {
// generate bitangents from normals and tangents according to spec
Tangent *tangents = nullptr;
attr.tangent[0]->ExtractData(tangents);
attr.tangent[0]->ExtractData(tangents);
aim->mTangents = new aiVector3D[aim->mNumVertices];
aim->mBitangents = new aiVector3D[aim->mNumVertices];
aim->mTangents = new aiVector3D[aim->mNumVertices];
aim->mBitangents = new aiVector3D[aim->mNumVertices];
for (unsigned int i = 0; i < aim->mNumVertices; ++i) {
aim->mTangents[i] = tangents[i].xyz;
aim->mBitangents[i] = (aim->mNormals[i] ^ tangents[i].xyz) * tangents[i].w;
for (unsigned int i = 0; i < aim->mNumVertices; ++i) {
aim->mTangents[i] = tangents[i].xyz;
aim->mBitangents[i] = (aim->mNormals[i] ^ tangents[i].xyz) * tangents[i].w;
}
delete[] tangents;
}
}
delete[] tangents;
}
}