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Unified Diff: src/effects/SkAlphaThresholdFilter.cpp

Issue 1723473002: Reland of ix misc asserts and checks found by fuzzer (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Created 4 years, 10 months ago
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Index: src/effects/SkAlphaThresholdFilter.cpp
diff --git a/src/effects/SkAlphaThresholdFilter.cpp b/src/effects/SkAlphaThresholdFilter.cpp
index 79520602b719e69f169f7511415861e3d390f12f..406797084f7f8a4369f6087106572a41be817e5d 100644
--- a/src/effects/SkAlphaThresholdFilter.cpp
+++ b/src/effects/SkAlphaThresholdFilter.cpp
@@ -45,11 +45,19 @@
SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkAlphaThresholdFilterImpl)
SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END
+static bool outside_unit(SkScalar x) {
+ return x < 0 || x > 1;
+}
SkImageFilter* SkAlphaThresholdFilter::Create(const SkRegion& region,
SkScalar innerThreshold,
SkScalar outerThreshold,
SkImageFilter* input) {
+ if (outside_unit(innerThreshold) || outside_unit(outerThreshold) ||
+ innerThreshold > outerThreshold)
+ {
+ return nullptr;
+ }
return new SkAlphaThresholdFilterImpl(region, innerThreshold, outerThreshold, input);
}
@@ -334,7 +342,6 @@
bool SkAlphaThresholdFilterImpl::onFilterImageDeprecated(Proxy* proxy, const SkBitmap& src,
const Context& ctx, SkBitmap* dst,
SkIPoint* offset) const {
- SkASSERT(src.colorType() == kN32_SkColorType);
if (src.colorType() != kN32_SkColorType) {
return false;
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