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12d54d746e
Transforms are supposed to be immutable, operating on the DataMaps provided for input and output, so make the methods const. Add a ShouldRun() method which the Manager can use to skip over transforms that do not need to be run. Change-Id: I320ac964577e94ac988748d8aca85bd43ee8d3b5 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/77120 Kokoro: Kokoro <noreply+kokoro@google.com> Reviewed-by: Antonio Maiorano <amaiorano@google.com> Commit-Queue: Ben Clayton <bclayton@google.com>
87 lines
2.7 KiB
C++
87 lines
2.7 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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#include "src/transform/manager.h"
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/// If set to 1 then the transform::Manager will dump the WGSL of the program
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/// before and after each transform. Helpful for debugging bad output.
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#define TINT_PRINT_PROGRAM_FOR_EACH_TRANSFORM 0
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#if TINT_PRINT_PROGRAM_FOR_EACH_TRANSFORM
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#define TINT_IF_PRINT_PROGRAM(x) x
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#else // TINT_PRINT_PROGRAM_FOR_EACH_TRANSFORM
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#define TINT_IF_PRINT_PROGRAM(x)
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#endif // TINT_PRINT_PROGRAM_FOR_EACH_TRANSFORM
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TINT_INSTANTIATE_TYPEINFO(tint::transform::Manager);
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namespace tint {
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namespace transform {
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Manager::Manager() = default;
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Manager::~Manager() = default;
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Output Manager::Run(const Program* program, const DataMap& data) const {
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#if TINT_PRINT_PROGRAM_FOR_EACH_TRANSFORM
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auto print_program = [&](const char* msg, const Transform* transform) {
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auto wgsl = Program::printer(program);
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std::cout << "---------------------------------------------------------"
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<< std::endl;
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std::cout << "-- " << msg << " " << transform->TypeInfo().name << ":"
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<< std::endl;
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std::cout << "---------------------------------------------------------"
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<< std::endl;
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std::cout << wgsl << std::endl;
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std::cout << "---------------------------------------------------------"
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<< std::endl
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<< std::endl;
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};
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#endif
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const Program* in = program;
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Output out;
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for (const auto& transform : transforms_) {
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if (!transform->ShouldRun(in)) {
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TINT_IF_PRINT_PROGRAM(std::cout << "Skipping "
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<< transform->TypeInfo().name);
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continue;
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}
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TINT_IF_PRINT_PROGRAM(print_program("Input to", transform.get()));
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auto res = transform->Run(in, data);
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out.program = std::move(res.program);
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out.data.Add(std::move(res.data));
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in = &out.program;
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if (!in->IsValid()) {
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TINT_IF_PRINT_PROGRAM(
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print_program("Invalid output of", transform.get()));
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return out;
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}
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if (transform == transforms_.back()) {
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TINT_IF_PRINT_PROGRAM(print_program("Output of", transform.get()));
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}
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}
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if (program == in) {
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out.program = program->Clone();
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}
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return out;
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}
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} // namespace transform
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} // namespace tint
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