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skip very large rects (for now) until we can pre-clip them to avoid floating

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point precision errors.



git-svn-id: http://skia.googlecode.com/svn/trunk@6497 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
reed@google.com 2012-11-19 21:09:14 +00:00
parent f11cf9ff88
commit 07784a0419
1 changed files with 11 additions and 1 deletions
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12
src/effects/SkBlurMaskFilter.cpp
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@ -140,6 +140,10 @@ static bool drawRectsIntoMask(const SkRect rects[], int count, SkMask* mask) {
return true;
}
static bool rect_coordinates_exceed(const SkRect& r, SkScalar v) {
return r.fLeft < -v || r.fTop < -v || r.fRight > v || r.fBottom > v;
}
SkMaskFilter::FilterReturn
SkBlurMaskFilterImpl::filterRectsToNine(const SkRect rects[], int count,
const SkMatrix& matrix,
@ -148,7 +152,13 @@ SkBlurMaskFilterImpl::filterRectsToNine(const SkRect rects[], int count,
if (count < 1 || count > 2) {
return kUnimplemented_FilterReturn;
}
// TODO: take clipBounds into account to limit our coordinates up front
// for now, just skip too-large src rects (to take the old code path).
if (rect_coordinates_exceed(rects[0], SkIntToScalar(32767))) {
return kUnimplemented_FilterReturn;
}
SkIPoint margin;
SkMask srcM, dstM;
rects[0].roundOut(&srcM.fBounds);