Fix for degenerate stroke rect

src/gpu/batches/GrRectBatchFactory.cpp

Index: src/gpu/batches/GrRectBatchFactory.cpp
diff --git a/src/gpu/batches/GrRectBatchFactory.cpp b/src/gpu/batches/GrRectBatchFactory.cpp
index eed18ad419637e788065495cf2729ae748fb6fa1..ca8bc1f84a63d594d4f17edc4e31cf59c37fdb4f 100644
--- a/src/gpu/batches/GrRectBatchFactory.cpp
+++ b/src/gpu/batches/GrRectBatchFactory.cpp
@@ -33,13 +33,6 @@ GrDrawBatch* CreateAAStroke(GrColor color,
     const SkScalar rx = SkScalarMul(dx, SK_ScalarHalf);
     const SkScalar ry = SkScalarMul(dy, SK_ScalarHalf);
 
-    SkScalar spare;
-    {
-        SkScalar w = devRect.width() - dx;
-        SkScalar h = devRect.height() - dy;
-        spare = SkTMin(w, h);
-    }
-
     SkRect devOutside(devRect);
     devOutside.outset(rx, ry);
 
@@ -51,12 +44,10 @@ GrDrawBatch* CreateAAStroke(GrColor color,
         miterStroke = false;
     }
 
-    if (spare <= 0 && miterStroke) {
-        return CreateAAFill(color, viewMatrix, devOutside, devOutside);
-    }
-
     SkRect devInside(devRect);

[robertphillips, 2015/09/20 15:49:40]

It seems like we could get cracking with this method.

-    devInside.inset(rx, ry);
+    SkScalar insideRx = SkTMin(devRect.width() / 2.0f, rx);
+    SkScalar insideRy = SkTMin(devRect.height() / 2.0f, ry);
+    devInside.inset(insideRx, insideRy);
 
     SkRect devOutsideAssist(devRect);