tiny_gltf.h - register MSFT_lod with the model's used extensions

This commit is contained in:
Thomas Gamper 2024-03-25 17:00:41 +01:00
parent b132612307
commit b274b34972

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@ -8334,6 +8334,32 @@ static void SerializeGltfModel(const Model *model, detail::json &o) {
}
}
// MSFT_lod
// Look if there is a node that employs MSFT_lod
auto msft_lod_nodes_it = std::find_if(
model->nodes.begin(), model->nodes.end(),
[](const Node& node) { return !node.lods.empty(); });
// Look if there is a material that employs MSFT_lod
auto msft_lod_materials_it = std::find_if(
model->materials.begin(), model->materials.end(),
[](const Material& material) {return !material.lods.empty(); });
// If either a node or a material employ MSFT_lod, then we need
// to add MSFT_lod to the list of used extensions.
if (msft_lod_nodes_it != model->nodes.end() || msft_lod_materials_it != model->materials.end()) {
// First check if MSFT_lod is already registered as used extension
auto has_msft_lod = std::find_if(
extensionsUsed.begin(), extensionsUsed.end(),
[](const std::string &s) { return (s.compare("MSFT_lod") == 0); });
// If MSFT_lod is not registered yet, add it
if (has_msft_lod == extensionsUsed.end()) {
extensionsUsed.push_back("MSFT_lod");
}
}
// Extensions used
if (extensionsUsed.size()) {
SerializeStringArrayProperty("extensionsUsed", extensionsUsed, o);