[read-pixels-pack-parameters.html]
  bug: https://github.com/servo/servo/issues/26004
  [WebGL test #243: last pixel of row 0: expected [249,102,0,255\], got [1,2,3,4\]]
    expected:
      if os == "mac": FAIL

  [WebGL test #257: first pixel of row 1: expected [2,200,102,255\], got [1,2,3,4\]]
    expected:
      if os == "mac": FAIL

  [WebGL test #246: first pixel of row 2: expected [134,87,234,255\], got [1,2,3,4\]]
    expected:
      if os == "mac": FAIL

  [WebGL test #245: last pixel of row 1: expected [2,200,102,255\], got [1,2,3,4\]]
    expected:
      if os == "mac": FAIL

  [WebGL test #256: last pixel of row 0: expected [249,102,0,255\], got [1,2,3,4\]]
    expected:
      if os == "mac": FAIL

  [WebGL test #254: skipped bytes changed at index 0: expected 1 got 249]
    expected:
      if os == "mac": FAIL

  [WebGL test #241: skipped bytes changed at index 0: expected 1 got 249]
    expected:
      if os == "mac": FAIL

  [WebGL test #260: last pixel of row 2: expected [134,87,234,255\], got [1,2,3,4\]]
    expected:
      if os == "mac": FAIL

  [WebGL test #244: first pixel of row 1: expected [2,200,102,255\], got [1,2,3,4\]]
    expected:
      if os == "mac": FAIL

  [WebGL test #247: last pixel of row 2: expected [134,87,234,255\], got [1,2,3,4\]]
    expected:
      if os == "mac": FAIL

  [WebGL test #242: first pixel of row 0: expected [249,102,0,255\], got [1,2,3,4\]]
    expected:
      if os == "mac": FAIL

  [WebGL test #255: first pixel of row 0: expected [249,102,0,255\], got [1,2,3,4\]]
    expected:
      if os == "mac": FAIL

  [WebGL test #259: first pixel of row 2: expected [134,87,234,255\], got [1,2,3,4\]]
    expected:
      if os == "mac": FAIL

  [WebGL test #258: last pixel of row 1: expected [2,200,102,255\], got [1,2,3,4\]]
    expected:
      if os == "mac": FAIL