am e0b39fc1: Merge "Account for hairlines in quick rejection logic" into jb-mr2-dev

* commit 'e0b39fc18c10224c4e66f70aa472d8497b1b4621':
  Account for hairlines in quick rejection logic

libs/hwui/DisplayListOp.h

@@ -165,7 +165,11 @@ public:
         return DeferredDisplayList::kOpBatch_None;
     }
 
-    float strokeWidthOutset() { return mPaint->getStrokeWidth() * 0.5f; }
+    float strokeWidthOutset() {
+        float width = mPaint->getStrokeWidth();
+        if (width == 0) return 0.5f; // account for hairline
+        return width * 0.5f;
+    }
 
 protected:
     SkPaint* getPaint(OpenGLRenderer& renderer) {

libs/hwui/PathTessellator.cpp

@@ -61,6 +61,7 @@ void PathTessellator::expandBoundsForStroke(SkRect& bounds, const SkPaint* paint
         bool forceExpand) {
     if (forceExpand || paint->getStyle() != SkPaint::kFill_Style) {
         float outset = paint->getStrokeWidth() * 0.5f;
+        if (outset == 0) outset = 0.5f; // account for hairline
         bounds.outset(outset, outset);
     }
 }