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https://github.com/KhronosGroup/SPIRV-Tools
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756b277fb8
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
61 lines
1.8 KiB
C++
61 lines
1.8 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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#include "feature_manager.h"
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#include <queue>
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#include <stack>
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#include "enum_string_mapping.h"
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namespace spvtools {
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namespace opt {
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void FeatureManager::Analyze(ir::Module* module) {
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AddExtensions(module);
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AddCapabilities(module);
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}
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void FeatureManager::AddExtensions(ir::Module* module) {
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for (auto ext : module->extensions()) {
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const std::string name =
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reinterpret_cast<const char*>(ext.GetInOperand(0u).words.data());
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libspirv::Extension extension;
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if (libspirv::GetExtensionFromString(name, &extension)) {
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extensions_.Add(extension);
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}
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}
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}
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void FeatureManager::AddCapability(SpvCapability cap) {
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if (capabilities_.Contains(cap)) return;
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capabilities_.Add(cap);
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spv_operand_desc desc = {};
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if (SPV_SUCCESS ==
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grammar_.lookupOperand(SPV_OPERAND_TYPE_CAPABILITY, cap, &desc)) {
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libspirv::CapabilitySet(desc->numCapabilities, desc->capabilities)
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.ForEach([this](SpvCapability c) { AddCapability(c); });
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}
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}
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void FeatureManager::AddCapabilities(ir::Module* module) {
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for (ir::Instruction& inst : module->capabilities()) {
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AddCapability(static_cast<SpvCapability>(inst.GetSingleWordInOperand(0)));
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}
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}
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} // namespace opt
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} // namespace spvtools
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