rror");

  const inLoc = 0;
  const outLoc = 0;

  const srcBuffer1 = createBuffer(gl, new Float32Array([1, 2, 3]));
  const srcVAO1 = createVAO(gl, srcBuffer1, inLoc);

  const dstBuffer = createBuffer(gl, Float32Array.BYTES_PER_ELEMENT * 3);

  const tf = null; // use the default transform feedback gl.createTransformFeedback();
  gl.bindTransformFeedback(gl.TRANSFORM_FEEDBACK, tf);
  gl.useProgram(prog);
  gl.bindBufferBase(gl.TRANSFORM_FEEDBACK_BUFFER, outLoc, dstBuffer);
  wtu.glErrorShouldBe(gl, gl.NO_