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c6bcab02fd
This change implements a new fuzzer. It mutates a WGSL shader by traversing the AST of a program and applying various transformations that might or might not be semantics preserving. Change-Id: I6b144bd1067444c3f0b815ba1a646aaf6e739b52 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/52160 Kokoro: Kokoro <noreply+kokoro@google.com> Commit-Queue: Vasyl Teliman <vasniktel@gmail.com> Reviewed-by: Alastair Donaldson <allydonaldson@googlemail.com> Reviewed-by: Ben Clayton <bclayton@google.com>
38 lines
1.3 KiB
C++
38 lines
1.3 KiB
C++
// Copyright 2021 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "fuzzers/tint_ast_fuzzer/random_number_generator.h"
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namespace tint {
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namespace fuzzers {
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namespace ast_fuzzer {
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RandomNumberGenerator::~RandomNumberGenerator() = default;
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bool RandomNumberGenerator::RandomBool() {
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return RandomUint32(2);
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}
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bool RandomNumberGenerator::ChoosePercentage(uint32_t percentage) {
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assert(percentage <= 100 && "|percentage| is invalid");
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// 100 is used as a bound instead of 101 because otherwise it would be
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// possible to return `false` when `percentage == 100` holds. This would
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// happen when the result of `RandomUint32` is 100 as well.
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return RandomUint32(100) < percentage;
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}
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} // namespace ast_fuzzer
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} // namespace fuzzers
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} // namespace tint
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