code: function () {
              if (this.length) {
                  var gl = this.gl;
  
                  // Copy data into stream buffer
                  var len = this.length * ELEMENT_SIZE * ELEMENTS_PER_QUAD;
                  gl.bufferData(
                      gl.ARRAY_BUFFER,
                      this.stream.subarray(0, len),
                      gl.STREAM_DRAW
                  );
  
                  // Draw the stream buffer
                  gl.drawElements(
                      gl.TRIANGLES,
                      this.length * INDICES_PER_QUAD,
                      gl.UNSIGNED_SHORT,
                      0
                  );
  
                  this.sbIndex = 0;
                  this.length = 0;
              }
          }
docs: Flush batched texture operations to the GPU
  @name flush
  @memberOf me.WebGLRenderer.Compositor
  @function