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c6b381495d
Replace the ShouldRun() method with Apply() which will do the transformation if it needs to be done, otherwise returns 'SkipTransform'. This reduces a bunch of duplicated scanning between the old ShouldRun() and Transform(). This change also adjusts code style to make the transforms more consistent. Change-Id: I9a6b10cb8b4ed62676b12ef30fb7764d363386c6 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/107681 Reviewed-by: James Price <jrprice@google.com> Kokoro: Kokoro <noreply+kokoro@google.com> Commit-Queue: Ben Clayton <bclayton@google.com> Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
76 lines
2.8 KiB
C++
76 lines
2.8 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/tint/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::transform {
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Manager::Manager() = default;
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Manager::~Manager() = default;
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Transform::ApplyResult Manager::Apply(const Program* program,
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const DataMap& inputs,
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DataMap& outputs) 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(in);
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std::cout << "---------------------------------------------------------" << std::endl;
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std::cout << "-- " << msg << " " << transform->TypeInfo().name << ":" << std::endl;
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std::cout << "---------------------------------------------------------" << std::endl;
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std::cout << wgsl << std::endl;
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std::cout << "---------------------------------------------------------" << std::endl
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<< std::endl;
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};
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#endif
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std::optional<Program> output;
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for (const auto& transform : transforms_) {
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TINT_IF_PRINT_PROGRAM(print_program("Input to", transform.get()));
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if (auto result = transform->Apply(program, inputs, outputs)) {
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output.emplace(std::move(result.value()));
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program = &output.value();
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if (!program->IsValid()) {
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TINT_IF_PRINT_PROGRAM(print_program("Invalid output of", transform.get()));
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break;
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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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} else {
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TINT_IF_PRINT_PROGRAM(std::cout << "Skipped " << transform->TypeInfo().name
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<< std::endl);
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}
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}
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return output;
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}
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} // namespace tint::transform
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