| /* |
| * SPIRVSupport.cpp |
| * |
| * Copyright (c) 2015-2021 The Brenwill Workshop Ltd. (http://www.brenwill.com) |
| * |
| * 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 "SPIRVSupport.h" |
| #include "MVKStrings.h" |
| #include <spirv.hpp> |
| #include <ostream> |
| |
| #import <CoreFoundation/CFByteOrder.h> |
| |
| using namespace mvk; |
| using namespace std; |
| |
| void mvk::spirvToBytes(const vector<uint32_t>& spv, vector<char>& bytes) { |
| // Assumes desired endianness. |
| size_t byteCnt = spv.size() * sizeof(uint32_t); |
| char* cBytes = (char*)spv.data(); |
| bytes.clear(); |
| bytes.insert(bytes.end(), cBytes, cBytes + byteCnt); |
| } |
| |
| void mvk::spirvToHeaderBytes(const vector<uint32_t>& spv, vector<char>& bytes, const string& varName) { |
| bytes.clear(); |
| charvectorbuf cb(&bytes); |
| ostream hdr(&cb); |
| size_t spvCnt = spv.size(); |
| |
| hdr << "// Automatically generated. Do not edit.\n\n"; |
| hdr << "#include <stdint.h>\n\n"; |
| hdr << "\tstatic const uint32_t " << cleanseVarName(varName) << '[' << spvCnt << "] = {"; |
| |
| // Output the SPIR-V content, 8 elements per line |
| if (spvCnt > 0) { |
| hdr << "\n\t\t" << spv.front(); |
| for (size_t spvIdx = 1; spvIdx < spvCnt; spvIdx++) { |
| hdr << (spvIdx % 8 ? ", " : ",\n\t\t") << spv[spvIdx]; |
| } |
| } |
| hdr << "\n\t};\n"; |
| } |
| |
| void mvk::bytesToSPIRV(const vector<char>& bytes, vector<uint32_t>& spv) { |
| size_t spvCnt = bytes.size() / sizeof(uint32_t); |
| uint32_t* cSPV = (uint32_t*)bytes.data(); |
| spv.clear(); |
| spv.insert(spv.end(), cSPV, cSPV + spvCnt); |
| ensureSPIRVEndianness(spv); |
| } |
| |
| bool mvk::ensureSPIRVEndianness(vector<uint32_t>& spv) { |
| if (spv.empty()) { return false; } // Nothing to convert |
| |
| uint32_t magNum = spv.front(); |
| if (magNum == spv::MagicNumber) { return false; } // No need to convert |
| |
| if (CFSwapInt32(magNum) == spv::MagicNumber) { // Yep, it's SPIR-V, but wrong endianness |
| for (auto& elem : spv) { elem = CFSwapInt32(elem); } |
| return true; |
| } |
| return false; // Not SPIR-V, so don't convert |
| } |
| |
| // Optionally exclude including SPIRV-Tools components. |
| #ifdef MVK_EXCLUDE_SPIRV_TOOLS |
| |
| void mvk::logSPIRV(vector<uint32_t>& /*spirv*/, string& spvLog) { |
| spvLog.append("\n"); |
| spvLog.append("Decompiled SPIR-V is unavailable. To log decompiled SPIR-V code,\n"); |
| spvLog.append("build MoltenVK without the MVK_EXCLUDE_SPIRV_TOOLS build setting."); |
| spvLog.append("\n"); |
| } |
| |
| #else |
| |
| #include <spirv-tools/libspirv.h> |
| |
| void mvk::logSPIRV(vector<uint32_t>& spirv, string& spvLog) { |
| if ( !((spirv.size() > 4) && |
| (spirv[0] == spv::MagicNumber) && |
| (spirv[4] == 0)) ) { return; } |
| |
| uint32_t options = (SPV_BINARY_TO_TEXT_OPTION_INDENT); |
| spv_text text; |
| spv_diagnostic diagnostic = nullptr; |
| spv_context context = spvContextCreate(SPV_ENV_VULKAN_1_0); |
| spv_result_t error = spvBinaryToText(context, spirv.data(), spirv.size(), options, &text, &diagnostic); |
| spvContextDestroy(context); |
| if (error) { |
| spvDiagnosticPrint(diagnostic); |
| spvDiagnosticDestroy(diagnostic); |
| return; |
| } |
| spvLog.append(text->str, text->length); |
| spvTextDestroy(text); |
| } |
| |
| #endif |