diff options
Diffstat (limited to 'src/gui/painting/qdrawhelper.cpp')
| -rw-r--r-- | src/gui/painting/qdrawhelper.cpp | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/gui/painting/qdrawhelper.cpp b/src/gui/painting/qdrawhelper.cpp index 5fe0a5b41b..301e430b11 100644 --- a/src/gui/painting/qdrawhelper.cpp +++ b/src/gui/painting/qdrawhelper.cpp @@ -3255,6 +3255,7 @@ public: static Type null() { return 0; } static Type fetchSingle(const QGradientData& gradient, qreal v) { + Q_ASSERT(std::isfinite(v)); return qt_gradient_pixel(&gradient, v); } static Type fetchSingle(const QGradientData& gradient, int v) @@ -3275,6 +3276,7 @@ public: static Type null() { return QRgba64::fromRgba64(0); } static Type fetchSingle(const QGradientData& gradient, qreal v) { + Q_ASSERT(std::isfinite(v)); return qt_gradient_pixel64(&gradient, v); } static Type fetchSingle(const QGradientData& gradient, int v) @@ -3296,6 +3298,7 @@ public: static Type null() { return QRgbaFloat32::fromRgba64(0,0,0,0); } static Type fetchSingle(const QGradientData& gradient, qreal v) { + Q_ASSERT(std::isfinite(v)); return qt_gradient_pixelFP(&gradient, v); } static Type fetchSingle(const QGradientData& gradient, int v) @@ -3445,7 +3448,13 @@ public: } } else { while (buffer < end) { - *buffer++ = GradientBase::fetchSingle(data->gradient, qSqrt(det) - b); + BlendType result = GradientBase::null(); + if (det >= 0) { + qreal w = qSqrt(det) - b; + result = GradientBase::fetchSingle(data->gradient, w); + } + + *buffer++ = result; det += delta_det; delta_det += delta_delta_det; |