setMorphWeights method

@override void setMorphWeights(Float32List? weights)

Hook for morphed geometries to receive the owning node's morph weights.

The default implementation does nothing. The render passes call this right before each draw's bind (mirroring setJointsTexture), so a geometry shared between several nodes blends each node's own weights.

Implementation

@override
void setMorphWeights(Float32List? weights) {
  if (weights == null) return;
  if (usesGpuMorphing) {
    // Retained by reference: the render item hands the node's live list
    // right before each draw's bind, which reads it synchronously.
    _gpuWeights = weights;
    return;
  }
  final base = _baseVertexFloats;
  if (base == null) return; // Nothing uploaded yet.
  if (_weightsMatch(weights)) return;
  _appliedWeights = Float32List.fromList(weights);
  final blended = _blendScratch ??= Float32List(base.length);
  _blendInterleaved(base, blended, weights);
  _uploadingBlend = true;
  try {
    uploadVertexData(
      ByteData.sublistView(blended),
      _baseVertexCount,
      _baseIndices,
      indexType: _baseIndexType,
    );
  } finally {
    _uploadingBlend = false;
  }
}