| // Copyright 2023 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/lang/core/ir/transform/binding_remapper.h" |
| |
| #include <utility> |
| |
| #include "src/tint/lang/core/ir/module.h" |
| #include "src/tint/lang/core/ir/validator.h" |
| #include "src/tint/lang/core/ir/var.h" |
| #include "src/tint/utils/result/result.h" |
| #include "src/tint/utils/text/string.h" |
| |
| using namespace tint::core::number_suffixes; // NOLINT |
| |
| namespace tint::ir::transform { |
| |
| namespace { |
| |
| Result<SuccessType, std::string> Run(ir::Module* ir, const BindingRemapperOptions& options) { |
| if (!options.access_controls.empty()) { |
| return std::string("remapping access controls is currently unsupported"); |
| } |
| if (options.binding_points.empty()) { |
| return Success; |
| } |
| if (!ir->root_block) { |
| return Success; |
| } |
| |
| // Find binding resources. |
| for (auto inst : *ir->root_block) { |
| auto* var = inst->As<Var>(); |
| if (!var || !var->Alive()) { |
| continue; |
| } |
| |
| auto bp = var->BindingPoint(); |
| if (!bp) { |
| continue; |
| } |
| |
| // Replace group and binding index if requested. |
| auto to = options.binding_points.find(bp.value()); |
| if (to != options.binding_points.end()) { |
| var->SetBindingPoint(to->second.group, to->second.binding); |
| } |
| } |
| |
| return Success; |
| } |
| |
| } // namespace |
| |
| Result<SuccessType, std::string> BindingRemapper(Module* ir, |
| const BindingRemapperOptions& options) { |
| auto result = ValidateAndDumpIfNeeded(*ir, "BindingRemapper transform"); |
| if (!result) { |
| return result; |
| } |
| |
| return Run(ir, options); |
| } |
| |
| } // namespace tint::ir::transform |