clear method

void clear()

Drops (and disposes) everything.

Implementation

void clear() {
  _shaders.clear();
  for (final p in _pictures.values) {
    p.dispose();
  }
  _pictures.clear();
  for (final p in _scenePictures.values) {
    p.dispose();
  }
  _scenePictures.clear();
  builds = 0;
}