backout a workaround that is not needed anymore

            // This reads the frame-buffer, so a h/w GL would have to

            // finish() its rendering first. we don't want to do that

            // too often. Read data is 4-bytes aligned.

            glFinish();

            glReadPixels(X, Y, w, h, mReadFormat, mReadType, pixels);

            // blur that texture.