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Merge pull request #14914 from raveenajain/gltf_tangents

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Case 21165: tangent attribute
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John Conklin II 2019-02-15 11:24:21 -08:00 committed by GitHub
commit 5f0db88a20
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1 changed files with 18 additions and 1 deletions
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19
libraries/fbx/src/GLTFSerializer.cpp
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@ -892,6 +892,23 @@ bool GLTFSerializer::buildGeometry(HFMModel& hfmModel, const QUrl& url) {
for (int n = 0; n < colors.size() - 3; n += stride) {
mesh.colors.push_back(glm::vec3(colors[n], colors[n + 1], colors[n + 2]));
}
} else if (key == "TANGENT") {
QVector<float> tangents;
success = addArrayOfType(buffer.blob,
bufferview.byteOffset + accBoffset,
accessor.count,
tangents,
accessor.type,
accessor.componentType);
if (!success) {
qWarning(modelformat) << "There was a problem reading glTF TANGENT data for model " << _url;
continue;
}
int stride = (accessor.type == GLTFAccessorType::VEC4) ? 4 : 3;
for (int n = 0; n < tangents.size() - 3; n += stride) {
float tanW = stride == 4 ? tangents[n + 3] : 1;
mesh.tangents.push_back(glm::vec3(tanW * tangents[n], tangents[n + 1], tangents[n + 2]));
}
} else if (key == "TEXCOORD_0") {
QVector<float> texcoords;
success = addArrayOfType(buffer.blob,
@ -931,7 +948,7 @@ bool GLTFSerializer::buildGeometry(HFMModel& hfmModel, const QUrl& url) {
}
mesh.parts.push_back(part);
// populate the texture coordenates if they don't exist
// populate the texture coordinates if they don't exist
if (mesh.texCoords.size() == 0) {
for (int i = 0; i < part.triangleIndices.size(); i++) mesh.texCoords.push_back(glm::vec2(0.0, 1.0));
}