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// Copyright (c) 2022 The Khronos Group Inc.
// Copyright (c) 2022 LunarG Inc.
//
// 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 "source/opt/analyze_live_input_pass.h"
#include "source/opt/ir_context.h"
namespace spvtools {
namespace opt {
Pass::Status AnalyzeLiveInputPass::Process() {
// Current functionality assumes shader capability
if (!context()->get_feature_mgr()->HasCapability(spv::Capability::Shader))
return Status::SuccessWithoutChange;
Pass::Status status = DoLiveInputAnalysis();
return status;
}
Pass::Status AnalyzeLiveInputPass::DoLiveInputAnalysis() {
// Current functionality only supports frag, tesc, tese or geom shaders.
// Report failure for any other stage.
auto stage = context()->GetStage();
if (stage != spv::ExecutionModel::Fragment &&
stage != spv::ExecutionModel::TessellationControl &&
stage != spv::ExecutionModel::TessellationEvaluation &&
stage != spv::ExecutionModel::Geometry)
return Status::Failure;
context()->get_liveness_mgr()->GetLiveness(live_locs_, live_builtins_);
return Status::SuccessWithoutChange;
}
} // namespace opt
} // namespace spvtools
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