def test(self):
i = IECore.TIFFImageReader(
os.path.dirname(__file__) + "/images/a.tif").read()
i["A"] = i["Y"]
del i["Y"]
t = IECoreGL.AlphaTexture(i, False)
ii = t.imagePrimitive()
res = IECore.ImageDiffOp()(imageA=i,
imageB=ii,
maxError=0.001,
skipMissingChannels=False)
self.failIf(res.value)
