mgpuWriteUint16 function

void mgpuWriteUint16(
  1. MGPUBuffer buffer,
  2. Uint16List inputData,
  3. int size
)

Implementation

void mgpuWriteUint16(MGPUBuffer buffer, Uint16List inputData, int size) {
  final int elementsRequested = size > 0 ? size : inputData.length;
  final int actualElements = elementsRequested <= inputData.length
      ? elementsRequested
      : inputData.length;
  final int byteSize = actualElements * Uint16List.bytesPerElement;
  final JSNumber ptr = _malloc(byteSize.toJS);
  final int startByteIndex = ptr.toDartInt;
  try {
    final int startElementIndex = startByteIndex ~/ Uint16List.bytesPerElement;
    if (startElementIndex < 0 ||
        startElementIndex + actualElements > _heapU16.length) {
      throw StateError('Uint16 write would exceed heap bounds');
    }
    _heapU16.setRange(
      startElementIndex,
      startElementIndex + actualElements,
      inputData.sublist(0, actualElements),
    );
    _mgpuWriteUint16(buffer, ptr, byteSize.toJS);
  } finally {
    _free(ptr);
  }
}