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Fix for #3037 cause glTF2Importer creating bunch of bones with 0 for vertex with index 0

pull/3039/head
Sebastian Matusik 2020-02-28 18:41:29 -08:00
parent f343d3eec2
commit 5f35d62d61
1 changed files with 42 additions and 35 deletions
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77
code/glTF2/glTF2Importer.cpp
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@ -111,8 +111,9 @@ const aiImporterDesc *glTF2Importer::GetInfo() const {
bool glTF2Importer::CanRead(const std::string &pFile, IOSystem *pIOHandler, bool /* checkSig */) const {
const std::string &extension = GetExtension(pFile);
if (extension != "gltf" && extension != "glb")
if (extension != "gltf" && extension != "glb") {
return false;
}
if (pIOHandler) {
glTF2::Asset asset(pIOHandler);
@ -323,8 +324,9 @@ static inline bool CheckValidFacesIndices(aiFace *faces, unsigned nFaces, unsign
for (unsigned i = 0; i < nFaces; ++i) {
for (unsigned j = 0; j < faces[i].mNumIndices; ++j) {
unsigned idx = faces[i].mIndices[j];
if (idx >= nVerts)
if (idx >= nVerts) {
return false;
}
}
}
return true;
@ -861,7 +863,19 @@ aiNode *ImportNode(aiScene *pScene, glTF2::Asset &r, std::vector<unsigned int> &
if (node.skin) {
for (int primitiveNo = 0; primitiveNo < count; ++primitiveNo) {
aiMesh *mesh = pScene->mMeshes[meshOffsets[mesh_idx] + primitiveNo];
mesh->mNumBones = static_cast<unsigned int>(node.skin->jointNames.size());
unsigned int numBones =static_cast<unsigned int>(node.skin->jointNames.size());
std::vector<std::vector<aiVertexWeight>> weighting(numBones);
BuildVertexWeightMapping(node.meshes[0]->primitives[primitiveNo], weighting);
unsigned int realNumBones = 0;
for (uint32_t i = 0; i < numBones; ++i) {
if (weighting[i].size() > 0) {
realNumBones++;
}
}
mesh->mNumBones = static_cast<unsigned int>(realNumBones);
mesh->mBones = new aiBone *[mesh->mNumBones];
// GLTF and Assimp choose to store bone weights differently.
@ -873,43 +887,33 @@ aiNode *ImportNode(aiScene *pScene, glTF2::Asset &r, std::vector<unsigned int> &
// both because it's somewhat slow and because, for many applications,
// we then need to reconvert the data back into the vertex-to-bone
// mapping which makes things doubly-slow.
std::vector<std::vector<aiVertexWeight>> weighting(mesh->mNumBones);
BuildVertexWeightMapping(node.meshes[0]->primitives[primitiveNo], weighting);
mat4 *pbindMatrices = nullptr;
node.skin->inverseBindMatrices->ExtractData(pbindMatrices);
int cb = 0;
for (uint32_t i = 0; i < numBones; ++i) {
const std::vector<aiVertexWeight> &weights = weighting[i];
if (weights.size() > 0) {
aiBone *bone = new aiBone();
for (uint32_t i = 0; i < mesh->mNumBones; ++i) {
aiBone *bone = new aiBone();
Ref<Node> joint = node.skin->jointNames[i];
if (!joint->name.empty()) {
bone->mName = joint->name;
} else {
// Assimp expects each bone to have a unique name.
static const std::string kDefaultName = "bone_";
char postfix[10] = { 0 };
ASSIMP_itoa10(postfix, i);
bone->mName = (kDefaultName + postfix);
}
GetNodeTransform(bone->mOffsetMatrix, *joint);
CopyValue(pbindMatrices[i], bone->mOffsetMatrix);
std::vector<aiVertexWeight> &weights = weighting[i];
bone->mNumWeights = static_cast<uint32_t>(weights.size());
if (bone->mNumWeights > 0) {
Ref<Node> joint = node.skin->jointNames[i];
if (!joint->name.empty()) {
bone->mName = joint->name;
} else {
// Assimp expects each bone to have a unique name.
static const std::string kDefaultName = "bone_";
char postfix[10] = { 0 };
ASSIMP_itoa10(postfix, i);
bone->mName = (kDefaultName + postfix);
}
GetNodeTransform(bone->mOffsetMatrix, *joint);
CopyValue(pbindMatrices[i], bone->mOffsetMatrix);
bone->mNumWeights = static_cast<uint32_t>(weights.size());
bone->mWeights = new aiVertexWeight[bone->mNumWeights];
memcpy(bone->mWeights, weights.data(), bone->mNumWeights * sizeof(aiVertexWeight));
} else {
// Assimp expects all bones to have at least 1 weight.
bone->mWeights = new aiVertexWeight[1];
bone->mNumWeights = 1;
bone->mWeights->mVertexId = 0;
bone->mWeights->mWeight = 0.f;
mesh->mBones[cb++] = bone;
}
mesh->mBones[i] = bone;
}
if (pbindMatrices) {
@ -1232,8 +1236,9 @@ void glTF2Importer::ImportEmbeddedTextures(glTF2::Asset &r) {
int numEmbeddedTexs = 0;
for (size_t i = 0; i < r.images.Size(); ++i) {
if (r.images[i].HasData())
if (r.images[i].HasData()) {
numEmbeddedTexs += 1;
}
}
if (numEmbeddedTexs == 0)
@ -1244,7 +1249,9 @@ void glTF2Importer::ImportEmbeddedTextures(glTF2::Asset &r) {
// Add the embedded textures
for (size_t i = 0; i < r.images.Size(); ++i) {
Image &img = r.images[i];
if (!img.HasData()) continue;
if (!img.HasData()) {
continue;
}
int idx = mScene->mNumTextures++;
embeddedTexIdxs[i] = idx;