Make non-AA hairline stroke rects snap to pixels centers so they close.

src/gpu/GrPipelineBuilder.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrPipelineBuilder.h"
 
 #include "GrBatch.h"
 #include "GrBlend.h"
 #include "GrPaint.h"
 #include "GrPipeline.h"
 #include "GrProcOptInfo.h"
 #include "GrXferProcessor.h"
 #include "effects/GrPorterDuffXferProcessor.h"
 
 GrPipelineBuilder::GrPipelineBuilder()
-    : fFlagBits(0x0)
+    : fFlags(0x0)
     , fDrawFace(kBoth_DrawFace)
     , fColorProcInfoValid(false)
     , fCoverageProcInfoValid(false)
     , fColorCache(GrColor_ILLEGAL)
     , fCoverageCache(GrColor_ILLEGAL) {
     SkDEBUGCODE(fBlockEffectRemovalCnt = 0;)
 }
 
 GrPipelineBuilder& GrPipelineBuilder::operator=(const GrPipelineBuilder& that) {
     fRenderTarget.reset(SkSafeRef(that.fRenderTarget.get()));
-    fFlagBits = that.fFlagBits;
+    fFlags = that.fFlags;
     fStencilSettings = that.fStencilSettings;
     fDrawFace = that.fDrawFace;
     fXPFactory.reset(SkRef(that.getXPFactory()));
     fColorStages = that.fColorStages;
     fCoverageStages = that.fCoverageStages;
     fClip = that.fClip;
 
     fColorProcInfoValid = that.fColorProcInfoValid;
     fCoverageProcInfoValid = that.fCoverageProcInfoValid;
     fColorCache = that.fColorCache;
@@ skipping 21 matching lines @@
         fCoverageStages.push_back(paint.getCoverageStage(i));
     }
 
     fXPFactory.reset(SkRef(paint.getXPFactory()));
 
     this->setRenderTarget(rt);
 
     // These have no equivalent in GrPaint, set them to defaults
     fDrawFace = kBoth_DrawFace;
     fStencilSettings.setDisabled();
-    fFlagBits = 0;
+    fFlags = 0;
 
     fClip = clip;
 
-    this->setState(GrPipelineBuilder::kDither_StateBit, paint.isDither());
-    this->setState(GrPipelineBuilder::kHWAntialias_StateBit,
+    this->setState(GrPipelineBuilder::kDither_Flag, paint.isDither());
+    this->setState(GrPipelineBuilder::kHWAntialias_Flag,
                    rt->isMultisampled() && paint.isAntiAlias());
 
     fColorProcInfoValid = false;
     fCoverageProcInfoValid = false;
 
     fColorCache = GrColor_ILLEGAL;
     fCoverageCache = GrColor_ILLEGAL;
 }
 
 //////////////////////////////////////////////////////////////////////////////s
@@ skipping 89 matching lines @@
 void GrPipelineBuilder::calcCoverageInvariantOutput(GrColor coverage) const {
     if (!fCoverageProcInfoValid || coverage != fCoverageCache) {
         GrColorComponentFlags flags = kRGBA_GrColorComponentFlags;
         fCoverageProcInfo.calcWithInitialValues(fCoverageStages.begin(),
                                                 this->numCoverageFragmentStages(), coverage, flags,
                                                 true);
         fCoverageProcInfoValid = true;
         fCoverageCache = coverage;
     }
 }