Fix gpu dashing for case when circle dashes are large enough to overlap

Bug: skia:
Change-Id: I7153b28103c5ca0947c37d57357b64bf2aa884e5
Reviewed-on: https://skia-review.googlesource.com/20979
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>

1 files changed, 13 insertions, 1 deletions

diff --git a/gm/dashing.cpp b/gm/dashing.cpp
index b527fbf987..ff6e700b02 100644
--- a/gm/dashing.cpp
+++ b/gm/dashing.cpp
@@ -332,7 +332,7 @@ protected:
         return SkString("dashing4");
     }
 
-    SkISize onISize() { return SkISize::Make(640, 950); }
+    SkISize onISize() { return SkISize::Make(640, 1050); }
 
     virtual void onDraw(SkCanvas* canvas) {
         constexpr struct {
@@ -397,6 +397,18 @@ protected:
             drawline(canvas, 32, 16, paint, 8.f, 0.f, 40.f);
             canvas->translate(0, SkIntToScalar(20));
         }
+
+        // Test overlapping circles.
+        canvas->translate(SkIntToScalar(5), SkIntToScalar(20));
+        paint.setAntiAlias(true);
+        paint.setStrokeCap(SkPaint::kRound_Cap);
+        paint.setColor(0x44000000);
+        paint.setStrokeWidth(40);
+        drawline(canvas, 0, 30, paint);
+
+        canvas->translate(0, SkIntToScalar(50));
+        paint.setStrokeCap(SkPaint::kSquare_Cap);
+        drawline(canvas, 0, 30, paint);
     }
 };