2019-01-10 06:23:47 +03:00
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/*
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* Copyright 2018-2019 Arm Limited
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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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*/
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#include "spirv_parser.hpp"
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#include <assert.h>
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using namespace std;
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using namespace spv;
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namespace spirv_cross
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{
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Parser::Parser(std::vector<uint32_t> spirv)
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{
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ir.spirv = move(spirv);
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}
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Parser::Parser(const uint32_t *spirv_data, size_t word_count)
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{
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ir.spirv = vector<uint32_t>(spirv_data, spirv_data + word_count);
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}
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static bool decoration_is_string(Decoration decoration)
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{
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switch (decoration)
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{
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case DecorationHlslSemanticGOOGLE:
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return true;
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default:
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return false;
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}
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}
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static inline uint32_t swap_endian(uint32_t v)
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{
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return ((v >> 24) & 0x000000ffu) | ((v >> 8) & 0x0000ff00u) | ((v << 8) & 0x00ff0000u) | ((v << 24) & 0xff000000u);
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}
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static bool is_valid_spirv_version(uint32_t version)
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{
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switch (version)
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{
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// Allow v99 since it tends to just work.
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case 99:
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case 0x10000: // SPIR-V 1.0
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case 0x10100: // SPIR-V 1.1
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case 0x10200: // SPIR-V 1.2
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case 0x10300: // SPIR-V 1.3
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return true;
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default:
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return false;
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}
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}
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void Parser::parse()
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{
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auto &spirv = ir.spirv;
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auto len = spirv.size();
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if (len < 5)
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SPIRV_CROSS_THROW("SPIRV file too small.");
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auto s = spirv.data();
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// Endian-swap if we need to.
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if (s[0] == swap_endian(MagicNumber))
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transform(begin(spirv), end(spirv), begin(spirv), [](uint32_t c) { return swap_endian(c); });
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if (s[0] != MagicNumber || !is_valid_spirv_version(s[1]))
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SPIRV_CROSS_THROW("Invalid SPIRV format.");
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uint32_t bound = s[3];
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ir.set_id_bounds(bound);
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uint32_t offset = 5;
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vector<Instruction> instructions;
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while (offset < len)
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{
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Instruction instr = {};
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instr.op = spirv[offset] & 0xffff;
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instr.count = (spirv[offset] >> 16) & 0xffff;
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if (instr.count == 0)
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SPIRV_CROSS_THROW("SPIR-V instructions cannot consume 0 words. Invalid SPIR-V file.");
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instr.offset = offset + 1;
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instr.length = instr.count - 1;
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offset += instr.count;
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if (offset > spirv.size())
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SPIRV_CROSS_THROW("SPIR-V instruction goes out of bounds.");
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instructions.push_back(instr);
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}
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for (auto &i : instructions)
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parse(i);
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if (current_function)
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SPIRV_CROSS_THROW("Function was not terminated.");
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if (current_block)
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SPIRV_CROSS_THROW("Block was not terminated.");
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}
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const uint32_t *Parser::stream(const Instruction &instr) const
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{
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// If we're not going to use any arguments, just return nullptr.
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// We want to avoid case where we return an out of range pointer
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// that trips debug assertions on some platforms.
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if (!instr.length)
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return nullptr;
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if (instr.offset + instr.length > ir.spirv.size())
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SPIRV_CROSS_THROW("Compiler::stream() out of range.");
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return &ir.spirv[instr.offset];
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}
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static string extract_string(const vector<uint32_t> &spirv, uint32_t offset)
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{
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string ret;
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for (uint32_t i = offset; i < spirv.size(); i++)
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{
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uint32_t w = spirv[i];
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for (uint32_t j = 0; j < 4; j++, w >>= 8)
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{
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char c = w & 0xff;
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if (c == '\0')
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return ret;
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ret += c;
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}
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}
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SPIRV_CROSS_THROW("String was not terminated before EOF");
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}
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void Parser::parse(const Instruction &instruction)
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{
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auto *ops = stream(instruction);
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auto op = static_cast<Op>(instruction.op);
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uint32_t length = instruction.length;
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switch (op)
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{
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case OpMemoryModel:
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case OpSourceContinued:
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case OpSourceExtension:
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case OpNop:
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case OpLine:
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case OpNoLine:
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case OpString:
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case OpModuleProcessed:
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break;
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case OpSource:
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{
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auto lang = static_cast<SourceLanguage>(ops[0]);
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switch (lang)
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{
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case SourceLanguageESSL:
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ir.source.es = true;
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ir.source.version = ops[1];
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ir.source.known = true;
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ir.source.hlsl = false;
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break;
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case SourceLanguageGLSL:
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ir.source.es = false;
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ir.source.version = ops[1];
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ir.source.known = true;
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ir.source.hlsl = false;
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break;
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case SourceLanguageHLSL:
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// For purposes of cross-compiling, this is GLSL 450.
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ir.source.es = false;
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ir.source.version = 450;
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ir.source.known = true;
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ir.source.hlsl = true;
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break;
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default:
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ir.source.known = false;
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break;
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}
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break;
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}
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case OpUndef:
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{
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uint32_t result_type = ops[0];
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uint32_t id = ops[1];
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set<SPIRUndef>(id, result_type);
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break;
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}
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case OpCapability:
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{
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uint32_t cap = ops[0];
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if (cap == CapabilityKernel)
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SPIRV_CROSS_THROW("Kernel capability not supported.");
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ir.declared_capabilities.push_back(static_cast<Capability>(ops[0]));
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break;
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}
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case OpExtension:
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{
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auto ext = extract_string(ir.spirv, instruction.offset);
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ir.declared_extensions.push_back(move(ext));
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break;
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}
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case OpExtInstImport:
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{
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uint32_t id = ops[0];
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auto ext = extract_string(ir.spirv, instruction.offset + 1);
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if (ext == "GLSL.std.450")
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set<SPIRExtension>(id, SPIRExtension::GLSL);
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else if (ext == "SPV_AMD_shader_ballot")
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set<SPIRExtension>(id, SPIRExtension::SPV_AMD_shader_ballot);
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else if (ext == "SPV_AMD_shader_explicit_vertex_parameter")
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set<SPIRExtension>(id, SPIRExtension::SPV_AMD_shader_explicit_vertex_parameter);
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else if (ext == "SPV_AMD_shader_trinary_minmax")
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set<SPIRExtension>(id, SPIRExtension::SPV_AMD_shader_trinary_minmax);
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else if (ext == "SPV_AMD_gcn_shader")
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set<SPIRExtension>(id, SPIRExtension::SPV_AMD_gcn_shader);
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else
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set<SPIRExtension>(id, SPIRExtension::Unsupported);
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// Other SPIR-V extensions which have ExtInstrs are currently not supported.
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break;
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}
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case OpEntryPoint:
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{
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auto itr =
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ir.entry_points.insert(make_pair(ops[1], SPIREntryPoint(ops[1], static_cast<ExecutionModel>(ops[0]),
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extract_string(ir.spirv, instruction.offset + 2))));
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auto &e = itr.first->second;
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// Strings need nul-terminator and consume the whole word.
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uint32_t strlen_words = uint32_t((e.name.size() + 1 + 3) >> 2);
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e.interface_variables.insert(end(e.interface_variables), ops + strlen_words + 2, ops + instruction.length);
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// Set the name of the entry point in case OpName is not provided later.
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ir.set_name(ops[1], e.name);
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// If we don't have an entry, make the first one our "default".
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if (!ir.default_entry_point)
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ir.default_entry_point = ops[1];
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break;
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}
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case OpExecutionMode:
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{
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auto &execution = ir.entry_points[ops[0]];
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auto mode = static_cast<ExecutionMode>(ops[1]);
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execution.flags.set(mode);
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switch (mode)
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{
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case ExecutionModeInvocations:
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execution.invocations = ops[2];
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break;
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case ExecutionModeLocalSize:
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execution.workgroup_size.x = ops[2];
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execution.workgroup_size.y = ops[3];
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execution.workgroup_size.z = ops[4];
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break;
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case ExecutionModeOutputVertices:
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execution.output_vertices = ops[2];
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break;
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default:
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break;
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}
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break;
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}
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case OpName:
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{
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uint32_t id = ops[0];
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ir.set_name(id, extract_string(ir.spirv, instruction.offset + 1));
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break;
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}
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case OpMemberName:
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{
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uint32_t id = ops[0];
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uint32_t member = ops[1];
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ir.set_member_name(id, member, extract_string(ir.spirv, instruction.offset + 2));
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break;
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}
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case OpDecorationGroup:
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{
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// Noop, this simply means an ID should be a collector of decorations.
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// The meta array is already a flat array of decorations which will contain the relevant decorations.
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break;
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}
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case OpGroupDecorate:
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{
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uint32_t group_id = ops[0];
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auto &decorations = ir.meta[group_id].decoration;
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auto &flags = decorations.decoration_flags;
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// Copies decorations from one ID to another. Only copy decorations which are set in the group,
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// i.e., we cannot just copy the meta structure directly.
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for (uint32_t i = 1; i < length; i++)
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{
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uint32_t target = ops[i];
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flags.for_each_bit([&](uint32_t bit) {
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auto decoration = static_cast<Decoration>(bit);
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if (decoration_is_string(decoration))
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{
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ir.set_decoration_string(target, decoration, ir.get_decoration_string(group_id, decoration));
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}
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else
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{
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ir.meta[target].decoration_word_offset[decoration] =
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ir.meta[group_id].decoration_word_offset[decoration];
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ir.set_decoration(target, decoration, ir.get_decoration(group_id, decoration));
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}
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});
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}
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break;
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}
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case OpGroupMemberDecorate:
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{
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uint32_t group_id = ops[0];
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auto &flags = ir.meta[group_id].decoration.decoration_flags;
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// Copies decorations from one ID to another. Only copy decorations which are set in the group,
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// i.e., we cannot just copy the meta structure directly.
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for (uint32_t i = 1; i + 1 < length; i += 2)
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{
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uint32_t target = ops[i + 0];
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uint32_t index = ops[i + 1];
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flags.for_each_bit([&](uint32_t bit) {
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auto decoration = static_cast<Decoration>(bit);
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if (decoration_is_string(decoration))
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ir.set_member_decoration_string(target, index, decoration,
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ir.get_decoration_string(group_id, decoration));
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else
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ir.set_member_decoration(target, index, decoration, ir.get_decoration(group_id, decoration));
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});
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}
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break;
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}
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case OpDecorate:
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case OpDecorateId:
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{
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// OpDecorateId technically supports an array of arguments, but our only supported decorations are single uint,
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// so merge decorate and decorate-id here.
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uint32_t id = ops[0];
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auto decoration = static_cast<Decoration>(ops[1]);
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if (length >= 3)
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{
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ir.meta[id].decoration_word_offset[decoration] = uint32_t(&ops[2] - ir.spirv.data());
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ir.set_decoration(id, decoration, ops[2]);
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}
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else
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|
|
ir.set_decoration(id, decoration);
|
|
|
|
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpDecorateStringGOOGLE:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[0];
|
|
|
|
auto decoration = static_cast<Decoration>(ops[1]);
|
|
|
|
ir.set_decoration_string(id, decoration, extract_string(ir.spirv, instruction.offset + 2));
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpMemberDecorate:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[0];
|
|
|
|
uint32_t member = ops[1];
|
|
|
|
auto decoration = static_cast<Decoration>(ops[2]);
|
|
|
|
if (length >= 4)
|
|
|
|
ir.set_member_decoration(id, member, decoration, ops[3]);
|
|
|
|
else
|
|
|
|
ir.set_member_decoration(id, member, decoration);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpMemberDecorateStringGOOGLE:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[0];
|
|
|
|
uint32_t member = ops[1];
|
|
|
|
auto decoration = static_cast<Decoration>(ops[2]);
|
|
|
|
ir.set_member_decoration_string(id, member, decoration, extract_string(ir.spirv, instruction.offset + 3));
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Build up basic types.
|
|
|
|
case OpTypeVoid:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[0];
|
|
|
|
auto &type = set<SPIRType>(id);
|
|
|
|
type.basetype = SPIRType::Void;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpTypeBool:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[0];
|
|
|
|
auto &type = set<SPIRType>(id);
|
|
|
|
type.basetype = SPIRType::Boolean;
|
|
|
|
type.width = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpTypeFloat:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[0];
|
|
|
|
uint32_t width = ops[1];
|
|
|
|
auto &type = set<SPIRType>(id);
|
|
|
|
if (width == 64)
|
|
|
|
type.basetype = SPIRType::Double;
|
|
|
|
else if (width == 32)
|
|
|
|
type.basetype = SPIRType::Float;
|
|
|
|
else if (width == 16)
|
|
|
|
type.basetype = SPIRType::Half;
|
|
|
|
else
|
|
|
|
SPIRV_CROSS_THROW("Unrecognized bit-width of floating point type.");
|
|
|
|
type.width = width;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpTypeInt:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[0];
|
|
|
|
uint32_t width = ops[1];
|
|
|
|
bool signedness = ops[2] != 0;
|
|
|
|
auto &type = set<SPIRType>(id);
|
|
|
|
switch (width)
|
|
|
|
{
|
|
|
|
case 64:
|
|
|
|
type.basetype = signedness ? SPIRType::Int64 : SPIRType::UInt64;
|
|
|
|
break;
|
|
|
|
case 32:
|
|
|
|
type.basetype = signedness ? SPIRType::Int : SPIRType::UInt;
|
|
|
|
break;
|
|
|
|
case 16:
|
|
|
|
type.basetype = signedness ? SPIRType::Short : SPIRType::UShort;
|
|
|
|
break;
|
|
|
|
case 8:
|
|
|
|
type.basetype = signedness ? SPIRType::SByte : SPIRType::UByte;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
SPIRV_CROSS_THROW("Unrecognized bit-width of integral type.");
|
|
|
|
}
|
|
|
|
type.width = width;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Build composite types by "inheriting".
|
|
|
|
// NOTE: The self member is also copied! For pointers and array modifiers this is a good thing
|
|
|
|
// since we can refer to decorations on pointee classes which is needed for UBO/SSBO, I/O blocks in geometry/tess etc.
|
|
|
|
case OpTypeVector:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[0];
|
|
|
|
uint32_t vecsize = ops[2];
|
|
|
|
|
|
|
|
auto &base = get<SPIRType>(ops[1]);
|
|
|
|
auto &vecbase = set<SPIRType>(id);
|
|
|
|
|
|
|
|
vecbase = base;
|
|
|
|
vecbase.vecsize = vecsize;
|
|
|
|
vecbase.self = id;
|
|
|
|
vecbase.parent_type = ops[1];
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpTypeMatrix:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[0];
|
|
|
|
uint32_t colcount = ops[2];
|
|
|
|
|
|
|
|
auto &base = get<SPIRType>(ops[1]);
|
|
|
|
auto &matrixbase = set<SPIRType>(id);
|
|
|
|
|
|
|
|
matrixbase = base;
|
|
|
|
matrixbase.columns = colcount;
|
|
|
|
matrixbase.self = id;
|
|
|
|
matrixbase.parent_type = ops[1];
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpTypeArray:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[0];
|
|
|
|
auto &arraybase = set<SPIRType>(id);
|
|
|
|
|
|
|
|
uint32_t tid = ops[1];
|
|
|
|
auto &base = get<SPIRType>(tid);
|
|
|
|
|
|
|
|
arraybase = base;
|
|
|
|
arraybase.parent_type = tid;
|
|
|
|
|
|
|
|
uint32_t cid = ops[2];
|
|
|
|
ir.mark_used_as_array_length(cid);
|
|
|
|
auto *c = maybe_get<SPIRConstant>(cid);
|
|
|
|
bool literal = c && !c->specialization;
|
|
|
|
|
|
|
|
arraybase.array_size_literal.push_back(literal);
|
|
|
|
arraybase.array.push_back(literal ? c->scalar() : cid);
|
|
|
|
// Do NOT set arraybase.self!
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpTypeRuntimeArray:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[0];
|
|
|
|
|
|
|
|
auto &base = get<SPIRType>(ops[1]);
|
|
|
|
auto &arraybase = set<SPIRType>(id);
|
|
|
|
|
|
|
|
arraybase = base;
|
|
|
|
arraybase.array.push_back(0);
|
|
|
|
arraybase.array_size_literal.push_back(true);
|
|
|
|
arraybase.parent_type = ops[1];
|
|
|
|
// Do NOT set arraybase.self!
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpTypeImage:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[0];
|
|
|
|
auto &type = set<SPIRType>(id);
|
|
|
|
type.basetype = SPIRType::Image;
|
|
|
|
type.image.type = ops[1];
|
|
|
|
type.image.dim = static_cast<Dim>(ops[2]);
|
|
|
|
type.image.depth = ops[3] == 1;
|
|
|
|
type.image.arrayed = ops[4] != 0;
|
|
|
|
type.image.ms = ops[5] != 0;
|
|
|
|
type.image.sampled = ops[6];
|
|
|
|
type.image.format = static_cast<ImageFormat>(ops[7]);
|
|
|
|
type.image.access = (length >= 9) ? static_cast<AccessQualifier>(ops[8]) : AccessQualifierMax;
|
|
|
|
|
|
|
|
if (type.image.sampled == 0)
|
|
|
|
SPIRV_CROSS_THROW("OpTypeImage Sampled parameter must not be zero.");
|
|
|
|
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpTypeSampledImage:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[0];
|
|
|
|
uint32_t imagetype = ops[1];
|
|
|
|
auto &type = set<SPIRType>(id);
|
|
|
|
type = get<SPIRType>(imagetype);
|
|
|
|
type.basetype = SPIRType::SampledImage;
|
|
|
|
type.self = id;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpTypeSampler:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[0];
|
|
|
|
auto &type = set<SPIRType>(id);
|
|
|
|
type.basetype = SPIRType::Sampler;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpTypePointer:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[0];
|
|
|
|
|
|
|
|
auto &base = get<SPIRType>(ops[2]);
|
|
|
|
auto &ptrbase = set<SPIRType>(id);
|
|
|
|
|
|
|
|
ptrbase = base;
|
|
|
|
ptrbase.pointer = true;
|
|
|
|
ptrbase.pointer_depth++;
|
|
|
|
ptrbase.storage = static_cast<StorageClass>(ops[1]);
|
|
|
|
|
|
|
|
if (ptrbase.storage == StorageClassAtomicCounter)
|
|
|
|
ptrbase.basetype = SPIRType::AtomicCounter;
|
|
|
|
|
|
|
|
ptrbase.parent_type = ops[2];
|
|
|
|
|
|
|
|
// Do NOT set ptrbase.self!
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpTypeStruct:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[0];
|
|
|
|
auto &type = set<SPIRType>(id);
|
|
|
|
type.basetype = SPIRType::Struct;
|
|
|
|
for (uint32_t i = 1; i < length; i++)
|
|
|
|
type.member_types.push_back(ops[i]);
|
|
|
|
|
|
|
|
// Check if we have seen this struct type before, with just different
|
|
|
|
// decorations.
|
|
|
|
//
|
|
|
|
// Add workaround for issue #17 as well by looking at OpName for the struct
|
|
|
|
// types, which we shouldn't normally do.
|
|
|
|
// We should not normally have to consider type aliases like this to begin with
|
|
|
|
// however ... glslang issues #304, #307 cover this.
|
|
|
|
|
|
|
|
// For stripped names, never consider struct type aliasing.
|
|
|
|
// We risk declaring the same struct multiple times, but type-punning is not allowed
|
|
|
|
// so this is safe.
|
|
|
|
bool consider_aliasing = !ir.get_name(type.self).empty();
|
|
|
|
if (consider_aliasing)
|
|
|
|
{
|
|
|
|
for (auto &other : global_struct_cache)
|
|
|
|
{
|
|
|
|
if (ir.get_name(type.self) == ir.get_name(other) &&
|
|
|
|
types_are_logically_equivalent(type, get<SPIRType>(other)))
|
|
|
|
{
|
|
|
|
type.type_alias = other;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type.type_alias == 0)
|
|
|
|
global_struct_cache.push_back(id);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpTypeFunction:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[0];
|
|
|
|
uint32_t ret = ops[1];
|
|
|
|
|
|
|
|
auto &func = set<SPIRFunctionPrototype>(id, ret);
|
|
|
|
for (uint32_t i = 2; i < length; i++)
|
|
|
|
func.parameter_types.push_back(ops[i]);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Variable declaration
|
|
|
|
// All variables are essentially pointers with a storage qualifier.
|
|
|
|
case OpVariable:
|
|
|
|
{
|
|
|
|
uint32_t type = ops[0];
|
|
|
|
uint32_t id = ops[1];
|
|
|
|
auto storage = static_cast<StorageClass>(ops[2]);
|
|
|
|
uint32_t initializer = length == 4 ? ops[3] : 0;
|
|
|
|
|
|
|
|
if (storage == StorageClassFunction)
|
|
|
|
{
|
|
|
|
if (!current_function)
|
|
|
|
SPIRV_CROSS_THROW("No function currently in scope");
|
|
|
|
current_function->add_local_variable(id);
|
|
|
|
}
|
|
|
|
|
|
|
|
set<SPIRVariable>(id, type, storage, initializer);
|
|
|
|
|
|
|
|
// hlsl based shaders don't have those decorations. force them and then reset when reading/writing images
|
|
|
|
auto &ttype = get<SPIRType>(type);
|
|
|
|
if (ttype.basetype == SPIRType::BaseType::Image)
|
|
|
|
{
|
|
|
|
ir.set_decoration(id, DecorationNonWritable);
|
|
|
|
ir.set_decoration(id, DecorationNonReadable);
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
// OpPhi
|
|
|
|
// OpPhi is a fairly magical opcode.
|
|
|
|
// It selects temporary variables based on which parent block we *came from*.
|
|
|
|
// In high-level languages we can "de-SSA" by creating a function local, and flush out temporaries to this function-local
|
|
|
|
// variable to emulate SSA Phi.
|
|
|
|
case OpPhi:
|
|
|
|
{
|
|
|
|
if (!current_function)
|
|
|
|
SPIRV_CROSS_THROW("No function currently in scope");
|
|
|
|
if (!current_block)
|
|
|
|
SPIRV_CROSS_THROW("No block currently in scope");
|
|
|
|
|
|
|
|
uint32_t result_type = ops[0];
|
|
|
|
uint32_t id = ops[1];
|
|
|
|
|
|
|
|
// Instead of a temporary, create a new function-wide temporary with this ID instead.
|
|
|
|
auto &var = set<SPIRVariable>(id, result_type, spv::StorageClassFunction);
|
|
|
|
var.phi_variable = true;
|
|
|
|
|
|
|
|
current_function->add_local_variable(id);
|
|
|
|
|
|
|
|
for (uint32_t i = 2; i + 2 <= length; i += 2)
|
|
|
|
current_block->phi_variables.push_back({ ops[i], ops[i + 1], id });
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Constants
|
|
|
|
case OpSpecConstant:
|
|
|
|
case OpConstant:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[1];
|
|
|
|
auto &type = get<SPIRType>(ops[0]);
|
|
|
|
|
|
|
|
if (type.width > 32)
|
|
|
|
set<SPIRConstant>(id, ops[0], ops[2] | (uint64_t(ops[3]) << 32), op == OpSpecConstant);
|
|
|
|
else
|
|
|
|
set<SPIRConstant>(id, ops[0], ops[2], op == OpSpecConstant);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpSpecConstantFalse:
|
|
|
|
case OpConstantFalse:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[1];
|
|
|
|
set<SPIRConstant>(id, ops[0], uint32_t(0), op == OpSpecConstantFalse);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpSpecConstantTrue:
|
|
|
|
case OpConstantTrue:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[1];
|
|
|
|
set<SPIRConstant>(id, ops[0], uint32_t(1), op == OpSpecConstantTrue);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpConstantNull:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[1];
|
|
|
|
uint32_t type = ops[0];
|
|
|
|
make_constant_null(id, type);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpSpecConstantComposite:
|
|
|
|
case OpConstantComposite:
|
|
|
|
{
|
|
|
|
uint32_t id = ops[1];
|
|
|
|
uint32_t type = ops[0];
|
|
|
|
|
|
|
|
auto &ctype = get<SPIRType>(type);
|
|
|
|
|
|
|
|
// We can have constants which are structs and arrays.
|
|
|
|
// In this case, our SPIRConstant will be a list of other SPIRConstant ids which we
|
|
|
|
// can refer to.
|
|
|
|
if (ctype.basetype == SPIRType::Struct || !ctype.array.empty())
|
|
|
|
{
|
|
|
|
set<SPIRConstant>(id, type, ops + 2, length - 2, op == OpSpecConstantComposite);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
uint32_t elements = length - 2;
|
|
|
|
if (elements > 4)
|
|
|
|
SPIRV_CROSS_THROW("OpConstantComposite only supports 1, 2, 3 and 4 elements.");
|
|
|
|
|
|
|
|
SPIRConstant remapped_constant_ops[4];
|
|
|
|
const SPIRConstant *c[4];
|
|
|
|
for (uint32_t i = 0; i < elements; i++)
|
|
|
|
{
|
|
|
|
// Specialization constants operations can also be part of this.
|
|
|
|
// We do not know their value, so any attempt to query SPIRConstant later
|
|
|
|
// will fail. We can only propagate the ID of the expression and use to_expression on it.
|
|
|
|
auto *constant_op = maybe_get<SPIRConstantOp>(ops[2 + i]);
|
|
|
|
if (constant_op)
|
|
|
|
{
|
|
|
|
if (op == OpConstantComposite)
|
|
|
|
SPIRV_CROSS_THROW("Specialization constant operation used in OpConstantComposite.");
|
|
|
|
|
|
|
|
remapped_constant_ops[i].make_null(get<SPIRType>(constant_op->basetype));
|
|
|
|
remapped_constant_ops[i].self = constant_op->self;
|
|
|
|
remapped_constant_ops[i].constant_type = constant_op->basetype;
|
|
|
|
remapped_constant_ops[i].specialization = true;
|
|
|
|
c[i] = &remapped_constant_ops[i];
|
|
|
|
}
|
|
|
|
else
|
|
|
|
c[i] = &get<SPIRConstant>(ops[2 + i]);
|
|
|
|
}
|
|
|
|
set<SPIRConstant>(id, type, c, elements, op == OpSpecConstantComposite);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Functions
|
|
|
|
case OpFunction:
|
|
|
|
{
|
|
|
|
uint32_t res = ops[0];
|
|
|
|
uint32_t id = ops[1];
|
|
|
|
// Control
|
|
|
|
uint32_t type = ops[3];
|
|
|
|
|
|
|
|
if (current_function)
|
|
|
|
SPIRV_CROSS_THROW("Must end a function before starting a new one!");
|
|
|
|
|
|
|
|
current_function = &set<SPIRFunction>(id, res, type);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpFunctionParameter:
|
|
|
|
{
|
|
|
|
uint32_t type = ops[0];
|
|
|
|
uint32_t id = ops[1];
|
|
|
|
|
|
|
|
if (!current_function)
|
|
|
|
SPIRV_CROSS_THROW("Must be in a function!");
|
|
|
|
|
|
|
|
current_function->add_parameter(type, id);
|
|
|
|
set<SPIRVariable>(id, type, StorageClassFunction);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpFunctionEnd:
|
|
|
|
{
|
|
|
|
if (current_block)
|
|
|
|
{
|
|
|
|
// Very specific error message, but seems to come up quite often.
|
|
|
|
SPIRV_CROSS_THROW(
|
|
|
|
"Cannot end a function before ending the current block.\n"
|
|
|
|
"Likely cause: If this SPIR-V was created from glslang HLSL, make sure the entry point is valid.");
|
|
|
|
}
|
|
|
|
current_function = nullptr;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Blocks
|
|
|
|
case OpLabel:
|
|
|
|
{
|
|
|
|
// OpLabel always starts a block.
|
|
|
|
if (!current_function)
|
|
|
|
SPIRV_CROSS_THROW("Blocks cannot exist outside functions!");
|
|
|
|
|
|
|
|
uint32_t id = ops[0];
|
|
|
|
|
|
|
|
current_function->blocks.push_back(id);
|
|
|
|
if (!current_function->entry_block)
|
|
|
|
current_function->entry_block = id;
|
|
|
|
|
|
|
|
if (current_block)
|
|
|
|
SPIRV_CROSS_THROW("Cannot start a block before ending the current block.");
|
|
|
|
|
|
|
|
current_block = &set<SPIRBlock>(id);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Branch instructions end blocks.
|
|
|
|
case OpBranch:
|
|
|
|
{
|
|
|
|
if (!current_block)
|
|
|
|
SPIRV_CROSS_THROW("Trying to end a non-existing block.");
|
|
|
|
|
|
|
|
uint32_t target = ops[0];
|
|
|
|
current_block->terminator = SPIRBlock::Direct;
|
|
|
|
current_block->next_block = target;
|
|
|
|
current_block = nullptr;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpBranchConditional:
|
|
|
|
{
|
|
|
|
if (!current_block)
|
|
|
|
SPIRV_CROSS_THROW("Trying to end a non-existing block.");
|
|
|
|
|
|
|
|
current_block->condition = ops[0];
|
|
|
|
current_block->true_block = ops[1];
|
|
|
|
current_block->false_block = ops[2];
|
|
|
|
|
|
|
|
current_block->terminator = SPIRBlock::Select;
|
|
|
|
current_block = nullptr;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpSwitch:
|
|
|
|
{
|
|
|
|
if (!current_block)
|
|
|
|
SPIRV_CROSS_THROW("Trying to end a non-existing block.");
|
|
|
|
|
|
|
|
if (current_block->merge == SPIRBlock::MergeNone)
|
|
|
|
SPIRV_CROSS_THROW("Switch statement is not structured");
|
|
|
|
|
|
|
|
current_block->terminator = SPIRBlock::MultiSelect;
|
|
|
|
|
|
|
|
current_block->condition = ops[0];
|
|
|
|
current_block->default_block = ops[1];
|
|
|
|
|
|
|
|
for (uint32_t i = 2; i + 2 <= length; i += 2)
|
|
|
|
current_block->cases.push_back({ ops[i], ops[i + 1] });
|
|
|
|
|
|
|
|
// If we jump to next block, make it break instead since we're inside a switch case block at that point.
|
|
|
|
ir.block_meta[current_block->next_block] |= ParsedIR::BLOCK_META_MULTISELECT_MERGE_BIT;
|
|
|
|
|
|
|
|
current_block = nullptr;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpKill:
|
|
|
|
{
|
|
|
|
if (!current_block)
|
|
|
|
SPIRV_CROSS_THROW("Trying to end a non-existing block.");
|
|
|
|
current_block->terminator = SPIRBlock::Kill;
|
|
|
|
current_block = nullptr;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpReturn:
|
|
|
|
{
|
|
|
|
if (!current_block)
|
|
|
|
SPIRV_CROSS_THROW("Trying to end a non-existing block.");
|
|
|
|
current_block->terminator = SPIRBlock::Return;
|
|
|
|
current_block = nullptr;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpReturnValue:
|
|
|
|
{
|
|
|
|
if (!current_block)
|
|
|
|
SPIRV_CROSS_THROW("Trying to end a non-existing block.");
|
|
|
|
current_block->terminator = SPIRBlock::Return;
|
|
|
|
current_block->return_value = ops[0];
|
|
|
|
current_block = nullptr;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpUnreachable:
|
|
|
|
{
|
|
|
|
if (!current_block)
|
|
|
|
SPIRV_CROSS_THROW("Trying to end a non-existing block.");
|
|
|
|
current_block->terminator = SPIRBlock::Unreachable;
|
|
|
|
current_block = nullptr;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpSelectionMerge:
|
|
|
|
{
|
|
|
|
if (!current_block)
|
|
|
|
SPIRV_CROSS_THROW("Trying to modify a non-existing block.");
|
|
|
|
|
|
|
|
current_block->next_block = ops[0];
|
|
|
|
current_block->merge = SPIRBlock::MergeSelection;
|
|
|
|
ir.block_meta[current_block->next_block] |= ParsedIR::BLOCK_META_SELECTION_MERGE_BIT;
|
|
|
|
|
|
|
|
if (length >= 2)
|
|
|
|
{
|
|
|
|
if (ops[1] & SelectionControlFlattenMask)
|
|
|
|
current_block->hint = SPIRBlock::HintFlatten;
|
|
|
|
else if (ops[1] & SelectionControlDontFlattenMask)
|
|
|
|
current_block->hint = SPIRBlock::HintDontFlatten;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpLoopMerge:
|
|
|
|
{
|
|
|
|
if (!current_block)
|
|
|
|
SPIRV_CROSS_THROW("Trying to modify a non-existing block.");
|
|
|
|
|
|
|
|
current_block->merge_block = ops[0];
|
|
|
|
current_block->continue_block = ops[1];
|
|
|
|
current_block->merge = SPIRBlock::MergeLoop;
|
|
|
|
|
|
|
|
ir.block_meta[current_block->self] |= ParsedIR::BLOCK_META_LOOP_HEADER_BIT;
|
|
|
|
ir.block_meta[current_block->merge_block] |= ParsedIR::BLOCK_META_LOOP_MERGE_BIT;
|
|
|
|
|
|
|
|
ir.continue_block_to_loop_header[current_block->continue_block] = current_block->self;
|
|
|
|
|
|
|
|
// Don't add loop headers to continue blocks,
|
|
|
|
// which would make it impossible branch into the loop header since
|
|
|
|
// they are treated as continues.
|
|
|
|
if (current_block->continue_block != current_block->self)
|
|
|
|
ir.block_meta[current_block->continue_block] |= ParsedIR::BLOCK_META_CONTINUE_BIT;
|
|
|
|
|
|
|
|
if (length >= 3)
|
|
|
|
{
|
|
|
|
if (ops[2] & LoopControlUnrollMask)
|
|
|
|
current_block->hint = SPIRBlock::HintUnroll;
|
|
|
|
else if (ops[2] & LoopControlDontUnrollMask)
|
|
|
|
current_block->hint = SPIRBlock::HintDontUnroll;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case OpSpecConstantOp:
|
|
|
|
{
|
|
|
|
if (length < 3)
|
|
|
|
SPIRV_CROSS_THROW("OpSpecConstantOp not enough arguments.");
|
|
|
|
|
|
|
|
uint32_t result_type = ops[0];
|
|
|
|
uint32_t id = ops[1];
|
|
|
|
auto spec_op = static_cast<Op>(ops[2]);
|
|
|
|
|
|
|
|
set<SPIRConstantOp>(id, result_type, spec_op, ops + 3, length - 3);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Actual opcodes.
|
|
|
|
default:
|
|
|
|
{
|
|
|
|
if (!current_block)
|
|
|
|
SPIRV_CROSS_THROW("Currently no block to insert opcode.");
|
|
|
|
|
|
|
|
current_block->ops.push_back(instruction);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
bool Parser::types_are_logically_equivalent(const SPIRType &a, const SPIRType &b) const
|
|
|
|
{
|
|
|
|
if (a.basetype != b.basetype)
|
|
|
|
return false;
|
|
|
|
if (a.width != b.width)
|
|
|
|
return false;
|
|
|
|
if (a.vecsize != b.vecsize)
|
|
|
|
return false;
|
|
|
|
if (a.columns != b.columns)
|
|
|
|
return false;
|
|
|
|
if (a.array.size() != b.array.size())
|
|
|
|
return false;
|
|
|
|
|
|
|
|
size_t array_count = a.array.size();
|
|
|
|
if (array_count && memcmp(a.array.data(), b.array.data(), array_count * sizeof(uint32_t)) != 0)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (a.basetype == SPIRType::Image || a.basetype == SPIRType::SampledImage)
|
|
|
|
{
|
|
|
|
if (memcmp(&a.image, &b.image, sizeof(SPIRType::Image)) != 0)
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (a.member_types.size() != b.member_types.size())
|
|
|
|
return false;
|
|
|
|
|
|
|
|
size_t member_types = a.member_types.size();
|
|
|
|
for (size_t i = 0; i < member_types; i++)
|
|
|
|
{
|
|
|
|
if (!types_are_logically_equivalent(get<SPIRType>(a.member_types[i]), get<SPIRType>(b.member_types[i])))
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool Parser::variable_storage_is_aliased(const SPIRVariable &v) const
|
|
|
|
{
|
|
|
|
auto &type = get<SPIRType>(v.basetype);
|
2019-01-17 05:50:01 +03:00
|
|
|
|
|
|
|
auto *type_meta = ir.find_meta(type.self);
|
|
|
|
|
2019-01-10 06:23:47 +03:00
|
|
|
bool ssbo = v.storage == StorageClassStorageBuffer ||
|
2019-01-17 05:50:01 +03:00
|
|
|
(type_meta && type_meta->decoration.decoration_flags.get(DecorationBufferBlock));
|
2019-01-10 06:23:47 +03:00
|
|
|
bool image = type.basetype == SPIRType::Image;
|
|
|
|
bool counter = type.basetype == SPIRType::AtomicCounter;
|
|
|
|
|
|
|
|
bool is_restrict;
|
|
|
|
if (ssbo)
|
|
|
|
is_restrict = ir.get_buffer_block_flags(v).get(DecorationRestrict);
|
|
|
|
else
|
|
|
|
is_restrict = ir.has_decoration(v.self, DecorationRestrict);
|
|
|
|
|
|
|
|
return !is_restrict && (ssbo || image || counter);
|
|
|
|
}
|
|
|
|
|
|
|
|
void Parser::make_constant_null(uint32_t id, uint32_t type)
|
|
|
|
{
|
|
|
|
auto &constant_type = get<SPIRType>(type);
|
|
|
|
|
|
|
|
if (constant_type.pointer)
|
|
|
|
{
|
|
|
|
auto &constant = set<SPIRConstant>(id, type);
|
|
|
|
constant.make_null(constant_type);
|
|
|
|
}
|
|
|
|
else if (!constant_type.array.empty())
|
|
|
|
{
|
|
|
|
assert(constant_type.parent_type);
|
|
|
|
uint32_t parent_id = ir.increase_bound_by(1);
|
|
|
|
make_constant_null(parent_id, constant_type.parent_type);
|
|
|
|
|
|
|
|
if (!constant_type.array_size_literal.back())
|
|
|
|
SPIRV_CROSS_THROW("Array size of OpConstantNull must be a literal.");
|
|
|
|
|
|
|
|
vector<uint32_t> elements(constant_type.array.back());
|
|
|
|
for (uint32_t i = 0; i < constant_type.array.back(); i++)
|
|
|
|
elements[i] = parent_id;
|
|
|
|
set<SPIRConstant>(id, type, elements.data(), uint32_t(elements.size()), false);
|
|
|
|
}
|
|
|
|
else if (!constant_type.member_types.empty())
|
|
|
|
{
|
|
|
|
uint32_t member_ids = ir.increase_bound_by(uint32_t(constant_type.member_types.size()));
|
|
|
|
vector<uint32_t> elements(constant_type.member_types.size());
|
|
|
|
for (uint32_t i = 0; i < constant_type.member_types.size(); i++)
|
|
|
|
{
|
|
|
|
make_constant_null(member_ids + i, constant_type.member_types[i]);
|
|
|
|
elements[i] = member_ids + i;
|
|
|
|
}
|
|
|
|
set<SPIRConstant>(id, type, elements.data(), uint32_t(elements.size()), false);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
auto &constant = set<SPIRConstant>(id, type);
|
|
|
|
constant.make_null(constant_type);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
} // namespace spirv_cross
|