diff options
| -rw-r--r-- | src/core/SkBitmapProcState.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/core/SkBitmapProcState.h b/src/core/SkBitmapProcState.h index cdf02ea9e0..88e5193b2a 100644 --- a/src/core/SkBitmapProcState.h +++ b/src/core/SkBitmapProcState.h @@ -236,8 +236,11 @@ public: biasY = s.fFilterOneY >> 1; } - fX = SkScalarToFractionalInt(pt.x()) - SkFixedToFractionalInt(biasX); - fY = SkScalarToFractionalInt(pt.y()) - SkFixedToFractionalInt(biasY); + // punt to unsigned for defined underflow behavior + fX = (SkFractionalInt)((uint64_t)SkScalarToFractionalInt(pt.x()) - + (uint64_t)SkFixedToFractionalInt(biasX)); + fY = (SkFractionalInt)((uint64_t)SkScalarToFractionalInt(pt.y()) - + (uint64_t)SkFixedToFractionalInt(biasY)); if (scalarPoint) { scalarPoint->set(pt.x() - SkFixedToScalar(biasX), |