Function ParseBufferView

external/tinygltf/tiny_gltf.h:4654–4713

}

static bool ParseBufferView(
    BufferView *bufferView, std::string *err, const detail::json &o,
    bool store_original_json_for_extras_and_extensions) {
  int buffer = -1;
  if (!ParseIntegerProperty(&buffer, err, o, "buffer", true, "BufferView")) {
    return false;
  }

  size_t byteOffset = 0;
  ParseUnsignedProperty(&byteOffset, err, o, "byteOffset", false);

  size_t byteLength = 1;
  if (!ParseUnsignedProperty(&byteLength, err, o, "byteLength", true,
                             "BufferView")) {
    return false;
  }

  size_t byteStride = 0;
  if (!ParseUnsignedProperty(&byteStride, err, o, "byteStride", false)) {
    // Spec says: When byteStride of referenced bufferView is not defined, it
    // means that accessor elements are tightly packed, i.e., effective stride
    // equals the size of the element.
    // We cannot determine the actual byteStride until Accessor are parsed, thus
    // set 0(= tightly packed) here(as done in OpenGL's VertexAttribPoiner)
    byteStride = 0;
  }

  if ((byteStride > 252) || ((byteStride % 4) != 0)) {
    if (err) {
      std::stringstream ss;
      ss << "Invalid `byteStride' value. `byteStride' must be the multiple of "
            "4 : "
         << byteStride << std::endl;

      (*err) += ss.str();
    }
    return false;
  }

  int target = 0;
  ParseIntegerProperty(&target, err, o, "target", false);
  if ((target == TINYGLTF_TARGET_ARRAY_BUFFER) ||
      (target == TINYGLTF_TARGET_ELEMENT_ARRAY_BUFFER)) {
    // OK
  } else {
    target = 0;
  }
  bufferView->target = target;

  ParseStringProperty(&bufferView->name, err, o, "name", false);

  ParseExtrasAndExtensions(bufferView, err, o,
                           store_original_json_for_extras_and_extensions);

  bufferView->buffer = buffer;
  bufferView->byteOffset = byteOffset;
  bufferView->byteLength = byteLength;
  bufferView->byteStride = byteStride;