copyStateFrom method

void copyStateFrom(MaterialParameters other)

Copies the full parameter state (block bytes, explicit-set tracking, and sampler bindings) from other, which must have been built from the same compiled shader entry so the layouts agree. The editor uses this to apply a re-realized material onto the live instance in place.

Implementation

void copyStateFrom(MaterialParameters other) {
  if (other._block.lengthInBytes == _block.lengthInBytes) {
    Uint8List.sublistView(
      _block,
    ).setAll(0, Uint8List.sublistView(other._block));
  }
  _overridden
    ..clear()
    ..addAll(other._overridden);
  _assigned
    ..clear()
    ..addAll(other._assigned);
  for (final entry in _samplers.entries) {
    final source = other._samplers[entry.key];
    entry.value
      ..texture = source?.texture
      ..sampler = source?.sampler;
  }
}