11 PASS Left half of canvas should be empty
12 PASS Right half of canvas should be filled
13 PASS gl.getError() is gl.NO_ERROR
14expected: red channel should = 255 but was = 0.
15FAIL Left half of canvas should be empty
16expected: red channel should = 0 but was = 255.
17FAIL Right half of canvas should be filled
18FAIL gl.getError() should be 0. Was 1281.