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317014c0aa
Also eliminates dead output variables and unused output variable components. Finally calls aggressive dead code elimination. AnalyzeDeadOutputStores also supplied to be called on the following shader to provide input for the Eliminate* function.
113 lines
4.9 KiB
C++
113 lines
4.9 KiB
C++
//
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// Copyright (C) 2014-2016 LunarG, Inc.
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// Copyright (C) 2018 Google, Inc.
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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//
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// Neither the name of 3Dlabs Inc. Ltd. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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// COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// Call into SPIRV-Tools to disassemble, validate, and optimize.
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//
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#pragma once
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#ifndef GLSLANG_SPV_TOOLS_H
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#define GLSLANG_SPV_TOOLS_H
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#if ENABLE_OPT
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#include <vector>
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#include <ostream>
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#include "spirv-tools/libspirv.h"
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#endif
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#include "glslang/MachineIndependent/localintermediate.h"
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#include "Logger.h"
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namespace glslang {
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struct SpvOptions {
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bool generateDebugInfo {false};
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bool stripDebugInfo {false};
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bool disableOptimizer {true};
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bool optimizeSize {false};
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bool disassemble {false};
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bool validate {false};
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bool emitNonSemanticShaderDebugInfo {false};
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bool emitNonSemanticShaderDebugSource{ false };
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};
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#if ENABLE_OPT
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// Translate glslang's view of target versioning to what SPIRV-Tools uses.
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spv_target_env MapToSpirvToolsEnv(const SpvVersion& spvVersion, spv::SpvBuildLogger* logger);
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// Use the SPIRV-Tools disassembler to print SPIR-V using a SPV_ENV_UNIVERSAL_1_3 environment.
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void SpirvToolsDisassemble(std::ostream& out, const std::vector<unsigned int>& spirv);
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// Use the SPIRV-Tools disassembler to print SPIR-V with a provided SPIR-V environment.
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void SpirvToolsDisassemble(std::ostream& out, const std::vector<unsigned int>& spirv,
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spv_target_env requested_context);
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// Apply the SPIRV-Tools validator to generated SPIR-V.
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void SpirvToolsValidate(const glslang::TIntermediate& intermediate, std::vector<unsigned int>& spirv,
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spv::SpvBuildLogger*, bool prelegalization);
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// Apply the SPIRV-Tools optimizer to generated SPIR-V. HLSL SPIR-V is legalized in the process.
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void SpirvToolsTransform(const glslang::TIntermediate& intermediate, std::vector<unsigned int>& spirv,
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spv::SpvBuildLogger*, const SpvOptions*);
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// Apply the SPIRV-Tools EliminateDeadInputComponents pass to generated SPIR-V. Put result in |spirv|.
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void SpirvToolsEliminateDeadInputComponents(spv_target_env target_env, std::vector<unsigned int>& spirv,
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spv::SpvBuildLogger*);
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// Apply the SPIRV-Tools AnalyzeDeadOutputStores pass to generated SPIR-V. Put result in |live_locs|.
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// Return true if the result is valid.
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bool SpirvToolsAnalyzeDeadOutputStores(spv_target_env target_env, std::vector<unsigned int>& spirv,
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std::unordered_set<uint32_t>* live_locs,
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std::unordered_set<uint32_t>* live_builtins, spv::SpvBuildLogger*);
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// Apply the SPIRV-Tools EliminateDeadOutputStores and AggressiveDeadCodeElimination passes to generated SPIR-V using
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// |live_locs|. Put result in |spirv|.
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void SpirvToolsEliminateDeadOutputStores(spv_target_env target_env, std::vector<unsigned int>& spirv,
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std::unordered_set<uint32_t>* live_locs,
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std::unordered_set<uint32_t>* live_builtins, spv::SpvBuildLogger*);
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// Apply the SPIRV-Tools optimizer to strip debug info from SPIR-V. This is implicitly done by
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// SpirvToolsTransform if spvOptions->stripDebugInfo is set, but can be called separately if
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// optimization is disabled.
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void SpirvToolsStripDebugInfo(const glslang::TIntermediate& intermediate,
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std::vector<unsigned int>& spirv, spv::SpvBuildLogger*);
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#endif
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} // end namespace glslang
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#endif // GLSLANG_SPV_TOOLS_H
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