Fix GrCoverageSetOpXP unit test on mixed samples

src/gpu/effects/GrCoverageSetOpXP.cpp

 
 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "effects/GrCoverageSetOpXP.h"
 #include "GrCaps.h"
@@ skipping 229 matching lines @@
 void GrCoverageSetOpXPFactory::getInvariantBlendedColor(const GrProcOptInfo& colorPOI,
                                                         InvariantBlendedColor* blendedColor) const {
     blendedColor->fWillBlendWithDst = SkRegion::kReplace_Op != fRegionOp;
     blendedColor->fKnownColorFlags = kNone_GrColorComponentFlags;
 }
 
 GR_DEFINE_XP_FACTORY_TEST(GrCoverageSetOpXPFactory);
 
 const GrXPFactory* GrCoverageSetOpXPFactory::TestCreate(GrProcessorTestData* d) {
     SkRegion::Op regionOp = SkRegion::Op(d->fRandom->nextULessThan(SkRegion::kLastOp + 1));
-    bool invertCoverage = d->fRandom->nextBool();
+    bool invertCoverage = !d->fRenderTarget->hasMixedSamples() && d->fRandom->nextBool();

[bsalomon, 2015/11/12 21:08:28]

Can you add a comment here about why?

     return GrCoverageSetOpXPFactory::Create(regionOp, invertCoverage);
 }