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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>
58 lines
1.9 KiB
C++
58 lines
1.9 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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#ifndef FUZZERS_TINT_AST_FUZZER_RANDOM_NUMBER_GENERATOR_H_
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#define FUZZERS_TINT_AST_FUZZER_RANDOM_NUMBER_GENERATOR_H_
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#include <cassert>
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#include <cstdint>
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#include <vector>
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namespace tint {
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namespace fuzzers {
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namespace ast_fuzzer {
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/// Abstracts away the underlying algorithm that is used to generate random
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/// numbers.
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class RandomNumberGenerator {
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public:
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/// Virtual destructor.
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virtual ~RandomNumberGenerator();
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/// @brief Compute a random `uint32_t` value in the range `[0; bound)`.
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/// @param bound - the upper exclusive bound for the computed integer
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/// (must be positive).
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/// @return the random number.
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virtual uint32_t RandomUint32(uint32_t bound) = 0;
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/// @brief Compute a random `uint64_t` value in the range `[0; bound)`.
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/// @param bound - the upper exclusive bound for the computed integer
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/// (must be positive).
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/// @return the random number.
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virtual uint64_t RandomUint64(uint64_t bound) = 0;
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/// @return a randomly generated boolean value.
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bool RandomBool();
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/// @param percentage - must be in the range `[0; 100]`.
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/// @return `true` with `percentage` probability.
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bool ChoosePercentage(uint32_t 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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#endif // FUZZERS_TINT_AST_FUZZER_RANDOM_NUMBER_GENERATOR_H_
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