mgpuWriteTextureRegion2D function

int mgpuWriteTextureRegion2D(MGPUTexture texture, Uint8List bytes, int x, int y, int width, int height, int mipLevel, int arrayLayer,)

Implementation

int mgpuWriteTextureRegion2D(
  MGPUTexture texture,
  Uint8List bytes,
  int x,
  int y,
  int width,
  int height,
  int mipLevel,
  int arrayLayer,
) {
  if (x < 0 ||
      x >= 32768 ||
      y < 0 ||
      y >= 32768 ||
      width <= 0 ||
      width > 32768 ||
      height <= 0 ||
      height > 32768 ||
      mipLevel < 0 ||
      mipLevel > 15 ||
      arrayLayer < 0 ||
      arrayLayer >= 32768 ||
      bytes.isEmpty ||
      bytes.lengthInBytes > 0x7fffffff) {
    throw ArgumentError('Invalid texture region upload');
  }
  if (!hasTextureRegionUploadV1) {
    throw UnsupportedError('Region uploads are unsupported by this module');
  }
  final pointer = _malloc(bytes.lengthInBytes.toJS);
  final start = pointer.toDartInt;
  try {
    if (start <= 0 || start + bytes.lengthInBytes > _heapU8.length) {
      throw StateError('Texture region upload allocation failed');
    }
    HEAPU8.set(Uint8ListToJSUint8Array(bytes).toJS, start);
    return _mgpuWriteTextureRegion2D(
      texture,
      pointer,
      bytes.lengthInBytes.toJS,
      x.toJS,
      y.toJS,
      width.toJS,
      height.toJS,
      mipLevel.toJS,
      arrayLayer.toJS,
    ).toDartInt;
  } finally {
    _free(pointer);
  }
}