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TBR=reed@google.com
NOTRY=true
BUG=skia:4757
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1566733002

Review URL: https://codereview.chromium.org/1566733002

diff --git a/src/core/SkPath.cpp b/src/core/SkPath.cpp
index 757cae043e41c1e0e8f2a1f086bddd2eeacd5cf3..ab8d7359d2271b5a15b531859f44379522a4b378 100644 (file)
--- a/src/core/SkPath.cpp
+++ b/src/core/SkPath.cpp
@@ -2765,6 +2765,8 @@ static int winding_conic(const SkPoint pts[], SkScalar x, SkScalar y, SkScalar w
                          int* onCurveCount) {
     SkConic conic(pts, weight);
     SkConic chopped[2];
+    // If the data points are very large, the conic may not be monotonic but may also
+    // fail to chop. Then, the chopper does not split the original conic in two.
     bool isMono = is_mono_quad(pts[0].fY, pts[1].fY, pts[2].fY) || !conic.chopAtYExtrema(chopped);
     int w = winding_mono_conic(isMono ? conic : chopped[0], x, y, onCurveCount);
     if (!isMono) {