| // Copyright 2021 The Dawn & Tint Authors |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are met: |
| // |
| // 1. Redistributions of source code must retain the above copyright notice, this |
| // list of conditions and the following disclaimer. |
| // |
| // 2. Redistributions in binary form must reproduce the above copyright notice, |
| // this list of conditions and the following disclaimer in the documentation |
| // and/or other materials provided with the distribution. |
| // |
| // 3. Neither the name of the copyright holder nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
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| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include "src/tint/lang/wgsl/ast/transform/add_empty_entry_point.h" |
| |
| #include <utility> |
| |
| #include "src/tint/lang/wgsl/program/clone_context.h" |
| #include "src/tint/lang/wgsl/program/program_builder.h" |
| #include "src/tint/lang/wgsl/resolver/resolve.h" |
| |
| TINT_INSTANTIATE_TYPEINFO(tint::ast::transform::AddEmptyEntryPoint); |
| |
| using namespace tint::core::number_suffixes; // NOLINT |
| |
| namespace tint::ast::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; |
| program::CloneContext ctx{&b, &src, /* auto_clone_symbols */ true}; |
| |
| b.Func(b.Symbols().New("unused_entry_point"), {}, b.ty.void_(), {}, |
| tint::Vector{ |
| b.Stage(PipelineStage::kCompute), |
| b.WorkgroupSize(1_i), |
| }); |
| |
| ctx.Clone(); |
| return resolver::Resolve(b); |
| } |
| |
| } // namespace tint::ast::transform |