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Check for valid z-transform function in shadow generation

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Bug: oss-fuzz:5630
Change-Id: I608a8a2db608396932eb732b8d7b61ab9fbcc322
Reviewed-on: https://skia-review.googlesource.com/105223
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
This commit is contained in:
Jim Van Verth 2018-02-07 15:02:50 -05:00 committed by Skia Commit-Bot
parent 0b33cc42b4
commit 7c8008c0bd
1 changed files with 6 additions and 2 deletions
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8
src/utils/SkShadowTessellator.cpp
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@ -384,7 +384,9 @@ SkAmbientShadowTessellator::SkAmbientShadowTessellator(const SkPath& path,
// make sure we're not below the canvas plane
this->setZOffset(path.getBounds(), ctm.hasPerspective());
this->setTransformedHeightFunc(ctm);
if (!this->setTransformedHeightFunc(ctm)) {
return;
}
// Outer ring: 3*numPts
// Middle ring: numPts
@ -828,7 +830,9 @@ SkSpotShadowTessellator::SkSpotShadowTessellator(const SkPath& path, const SkMat
SkMatrix fullTransform = SkMatrix::Concat(shadowTransform, ctm);
// Set up our reverse mapping
this->setTransformedHeightFunc(fullTransform);
if (!this->setTransformedHeightFunc(fullTransform)) {
return;
}
// TODO: calculate these reserves better
// Penumbra ring: 3*numPts