30 /// Computes variance for the current cluster centers. Depending on <see cref="this.useFullResTexRef"/> uses either working resolution (<see cref="this.clusteringRTsAndBuffers.texturesWorkRes"/>), or full resolution (<see cref="this.clusteringRTsAndBuffers.texturesFullRes"/>) input.<br/><br/>Sets incorrect attribution. Does not restore to save performance.