Function activeTexture

demo/js/main.js:4784–4786

(gl, i)

}

function activeTexture(gl, i) {
  gl.activeTexture(gl["TEXTURE" + i]);
}

function updateTexture(gl, source) {
  gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, source);