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// Copyright 2021 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "src/tint/transform/add_empty_entry_point.h"
#include <utility>
#include "src/tint/program_builder.h"
TINT_INSTANTIATE_TYPEINFO(tint::transform::AddEmptyEntryPoint);
using namespace tint::number_suffixes; // NOLINT
namespace tint::transform {
namespace {
bool ShouldRun(const Program* program) {
for (auto* func : program->AST().Functions()) {
if (func->IsEntryPoint()) {
return false;
}
}
return true;
}
} // namespace
AddEmptyEntryPoint::AddEmptyEntryPoint() = default;
AddEmptyEntryPoint::~AddEmptyEntryPoint() = default;
Transform::ApplyResult AddEmptyEntryPoint::Apply(const Program* src,
const DataMap&,
DataMap&) const {
if (!ShouldRun(src)) {
return SkipTransform;
}
ProgramBuilder b;
CloneContext ctx{&b, src, /* auto_clone_symbols */ true};
b.Func(b.Symbols().New("unused_entry_point"), {}, b.ty.void_(), {},
utils::Vector{
b.Stage(ast::PipelineStage::kCompute),
b.WorkgroupSize(1_i),
});
ctx.Clone();
return Program(std::move(b));
}
} // namespace tint::transform