2541edf0c6
Also refactor a few things to make it easier to use oss-fuzz. Bug: skia: Change-Id: Ie518a6cfc7d57a347b5d09089379f986d33f8b7f Reviewed-on: https://skia-review.googlesource.com/41740 Commit-Queue: Kevin Lubick <kjlubick@google.com> Reviewed-by: Mike Klein <mtklein@google.com>
88 lines
2.4 KiB
C++
88 lines
2.4 KiB
C++
/*
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* Copyright 2018 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "Fuzz.h"
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#include "SkPath.h"
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#include "SkRegion.h"
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// We don't always want to test NaNs and infinities.
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static void fuzz_nice_float(Fuzz* fuzz, float* f) {
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float v;
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fuzz->next(&v);
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constexpr float kLimit = 1.0e35f; // FLT_MAX?
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*f = (v == v && v <= kLimit && v >= -kLimit) ? v : 0.0f;
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}
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template <typename... Args>
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inline void fuzz_nice_float(Fuzz* fuzz, float* f, Args... rest) {
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fuzz_nice_float(fuzz, f);
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fuzz_nice_float(fuzz, rest...);
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}
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static void fuzz_path(Fuzz* fuzz, SkPath* path, int maxOps) {
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if (maxOps < 2) {
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maxOps = 2;
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}
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uint8_t fillType;
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fuzz->nextRange(&fillType, 0, (uint8_t)SkPath::kInverseEvenOdd_FillType);
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path->setFillType((SkPath::FillType)fillType);
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uint8_t numOps;
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fuzz->nextRange(&numOps, 2, maxOps);
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for (uint8_t i = 0; i < numOps; ++i) {
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uint8_t op;
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fuzz->nextRange(&op, 0, 6);
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SkScalar a, b, c, d, e, f;
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switch (op) {
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case 0:
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fuzz_nice_float(fuzz, &a, &b);
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path->moveTo(a, b);
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break;
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case 1:
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fuzz_nice_float(fuzz, &a, &b);
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path->lineTo(a, b);
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break;
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case 2:
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fuzz_nice_float(fuzz, &a, &b, &c, &d);
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path->quadTo(a, b, c, d);
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break;
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case 3:
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fuzz_nice_float(fuzz, &a, &b, &c, &d, &e);
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path->conicTo(a, b, c, d, e);
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break;
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case 4:
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fuzz_nice_float(fuzz, &a, &b, &c, &d, &e, &f);
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path->cubicTo(a, b, c, d, e, f);
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break;
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case 5:
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fuzz_nice_float(fuzz, &a, &b, &c, &d, &e);
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path->arcTo(a, b, c, d, e);
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break;
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case 6:
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path->close();
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break;
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default:
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break;
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}
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}
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}
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template <>
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inline void Fuzz::next(SkRegion* region) {
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uint8_t N;
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this->nextRange(&N, 0, 10);
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for (uint8_t i = 0; i < N; ++i) {
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SkIRect r;
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uint8_t op;
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this->next(&r);
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r.sort();
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this->nextRange(&op, 0, (uint8_t)SkRegion::kLastOp);
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if (!region->op(r, (SkRegion::Op)op)) {
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return;
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}
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}
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}
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