getUniforms method
Implementation
WebGLUniforms getUniforms() {
		if ( cachedUniforms == null ) {
			onFirstUse.call(this);
		}
  return cachedUniforms!;
}WebGLUniforms getUniforms() {
		if ( cachedUniforms == null ) {
			onFirstUse.call(this);
		}
  return cachedUniforms!;
}