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check for huge paths

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Bug:802976
Change-Id: Ibb5930442f75ca8483afc8dfa5869cac98573904
Reviewed-on: https://skia-review.googlesource.com/98440
Reviewed-by: Cary Clark <caryclark@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Mike Reed <reed@google.com>
This commit is contained in:
Mike Reed 2018-01-22 16:49:49 -05:00 committed by Skia Commit-Bot
parent ca02c0a464
commit 1fe0bcc4f9
3 changed files with 48 additions and 4 deletions
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10
src/core/SkPaint.cpp
View File

@ -1937,6 +1937,11 @@ bool SkPaint::unflatten(SkReadBuffer& buffer) {
bool SkPaint::getFillPath(const SkPath& src, SkPath* dst, const SkRect* cullRect,
SkScalar resScale) const {
if (!src.isFinite()) {
dst->reset();
return false;
}
SkStrokeRec rec(*this, resScale);
const SkPath* srcPtr = &src;
@ -1957,6 +1962,11 @@ bool SkPaint::getFillPath(const SkPath& src, SkPath* dst, const SkRect* cullRect
*dst = *srcPtr;
}
}
if (!dst->isFinite()) {
dst->reset();
return false;
}
return !rec.isHairlineStyle();
}

7
src/core/SkScan_AntiPath.cpp
View File

@ -756,9 +756,8 @@ void SkScan::AntiFillPath(const SkPath& path, const SkRegion& origClip,
#include "SkRasterClip.h"
void SkScan::FillPath(const SkPath& path, const SkRasterClip& clip,
SkBlitter* blitter) {
if (clip.isEmpty()) {
void SkScan::FillPath(const SkPath& path, const SkRasterClip& clip, SkBlitter* blitter) {
if (clip.isEmpty() || !path.isFinite()) {
return;
}
@ -776,7 +775,7 @@ void SkScan::FillPath(const SkPath& path, const SkRasterClip& clip,
void SkScan::AntiFillPath(const SkPath& path, const SkRasterClip& clip,
SkBlitter* blitter, bool forceDAA) {
if (clip.isEmpty()) {
if (clip.isEmpty() || !path.isFinite()) {
return;
}

35
tests/PathTest.cpp
View File

@ -4949,3 +4949,38 @@ DEF_TEST(AndroidArc, reporter) {
}
}
#endif
/*
* Try a range of crazy values, just to ensure that we don't assert/crash.
*/
DEF_TEST(HugeGeometry, reporter) {
auto surf = SkSurface::MakeRasterN32Premul(100, 100);
auto canvas = surf->getCanvas();
const bool aas[] = { false, true };
const SkPaint::Style styles[] = {
SkPaint::kFill_Style, SkPaint::kStroke_Style, SkPaint::kStrokeAndFill_Style
};
const SkScalar values[] = {
0, 1, 1000, 1000 * 1000, 1000.f * 1000 * 10000, SK_ScalarMax / 2, SK_ScalarMax,
SK_ScalarInfinity
};
SkPaint paint;
for (auto x : values) {
SkRect r = { -x, -x, x, x };
for (auto width : values) {
paint.setStrokeWidth(width);
for (auto aa : aas) {
paint.setAntiAlias(aa);
for (auto style : styles) {
paint.setStyle(style);
canvas->drawRect(r, paint);
canvas->drawOval(r, paint);
}
}
}
}
}