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https://github.com/KhronosGroup/SPIRV-Tools
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In order to keep track of all of the implicit capabilities as well as the explicit ones, we will add them all to the feature manager. That is the object that needs to be queried when checking if a capability is enabled. The name of the "HasCapability" function in the module was changed to make it more obvious that it does not check for implied capabilities. Keep an spv_context and AssemblyGrammar in IRContext
69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
// Copyright (c) 2017 Google Inc.
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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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#ifndef LIBSPIRV_OPT_FEATURE_MANAGER_H_
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#define LIBSPIRV_OPT_FEATURE_MANAGER_H_
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#include "assembly_grammar.h"
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#include "extensions.h"
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#include "module.h"
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namespace spvtools {
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namespace opt {
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// Tracks features enabled by a module. The IRContext has a FeatureManager.
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class FeatureManager {
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public:
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explicit FeatureManager(const libspirv::AssemblyGrammar& grammar)
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: grammar_(grammar) {}
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// Returns true if |ext| is an enabled extension in the module.
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bool HasExtension(libspirv::Extension ext) const {
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return extensions_.Contains(ext);
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}
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// Returns true if |cap| is an enabled capability in the module.
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bool HasCapability(SpvCapability cap) const {
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return capabilities_.Contains(cap);
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}
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// Analyzes |module| and records enabled extensions and capabilities.
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void Analyze(ir::Module* module);
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private:
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// Analyzes |module| and records enabled extensions.
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void AddExtensions(ir::Module* module);
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// Adds the given |capability| and all implied capabilities into the current
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// FeatureManager.
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void AddCapability(SpvCapability capability);
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// Analyzes |module| and records enabled capabilities.
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void AddCapabilities(ir::Module* module);
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// Auxiliary object for querying SPIR-V grammar facts.
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const libspirv::AssemblyGrammar& grammar_;
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// The enabled extensions.
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libspirv::ExtensionSet extensions_;
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// The enabled capabilities.
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libspirv::CapabilitySet capabilities_;
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};
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} // namespace opt
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} // namespace spvtools
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#endif // LIBSPIRV_OPT_FEATURE_MANAGER_H_
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