83 lines
2.6 KiB
C++
83 lines
2.6 KiB
C++
// Copyright 2020 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 SRC_TINT_TRANSFORM_ROBUSTNESS_H_
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#define SRC_TINT_TRANSFORM_ROBUSTNESS_H_
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#include <unordered_set>
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#include "src/tint/transform/transform.h"
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// Forward declarations
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namespace tint::ast {
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class IndexAccessorExpression;
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class CallExpression;
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} // namespace tint::ast
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namespace tint::transform {
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/// This transform is responsible for clamping all array accesses to be within
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/// the bounds of the array. Any access before the start of the array will clamp
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/// to zero and any access past the end of the array will clamp to
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/// (array length - 1).
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class Robustness final : public Castable<Robustness, Transform> {
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public:
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/// Storage class to be skipped in the transform
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enum class StorageClass {
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kUniform,
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kStorage,
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};
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/// Configuration options for the transform
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struct Config final : public Castable<Config, Data> {
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/// Constructor
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Config();
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/// Copy constructor
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Config(const Config&);
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/// Destructor
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~Config() override;
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/// Assignment operator
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/// @returns this Config
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Config& operator=(const Config&);
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/// Storage classes to omit from apply the transform to.
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/// This allows for optimizing on hardware that provide safe accesses.
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std::unordered_set<StorageClass> omitted_classes;
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};
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/// Constructor
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Robustness();
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/// Destructor
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~Robustness() override;
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protected:
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/// Runs the transform using the CloneContext built for transforming a
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/// program. Run() is responsible for calling Clone() on the CloneContext.
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/// @param ctx the CloneContext primed with the input program and
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/// ProgramBuilder
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/// @param inputs optional extra transform-specific input data
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/// @param outputs optional extra transform-specific output data
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void Run(CloneContext& ctx, const DataMap& inputs, DataMap& outputs) const override;
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private:
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struct State;
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};
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} // namespace tint::transform
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#endif // SRC_TINT_TRANSFORM_ROBUSTNESS_H_
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