577 lines
20 KiB
C++
577 lines
20 KiB
C++
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//
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//Copyright (C) 2014-2015 LunarG, 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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// Author: John Kessenich, LunarG
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//
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//
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// Disassembler for SPIR-V.
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//
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <iomanip>
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#include <stack>
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#include <sstream>
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#include <cstring>
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namespace spv {
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// Include C-based headers that don't have a namespace
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#include "GLSL.std.450.h"
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}
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const char* GlslStd450DebugNames[spv::GLSLstd450Count];
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#include "disassemble.h"
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#include "doc.h"
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namespace spv {
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void Kill(std::ostream& out, const char* message)
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{
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out << std::endl << "Disassembly failed: " << message << std::endl;
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exit(1);
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}
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// used to identify the extended instruction library imported when printing
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enum ExtInstSet {
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GLSL450Inst,
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OpenCLExtInst,
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};
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// Container class for a single instance of a SPIR-V stream, with methods for disassembly.
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class SpirvStream {
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public:
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SpirvStream(std::ostream& out, const std::vector<unsigned int>& stream) : out(out), stream(stream), word(0), nextNestedControl(0) { }
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virtual ~SpirvStream() { }
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void validate();
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void processInstructions();
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protected:
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SpirvStream(const SpirvStream&);
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SpirvStream& operator=(const SpirvStream&);
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Op getOpCode(int id) const { return idInstruction[id] ? (Op)(stream[idInstruction[id]] & OpCodeMask) : OpNop; }
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// Output methods
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void outputIndent();
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void formatId(Id id, std::stringstream&);
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void outputResultId(Id id);
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void outputTypeId(Id id);
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void outputId(Id id);
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void outputMask(OperandClass operandClass, unsigned mask);
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void disassembleImmediates(int numOperands);
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void disassembleIds(int numOperands);
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int disassembleString();
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void disassembleInstruction(Id resultId, Id typeId, Op opCode, int numOperands);
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// Data
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std::ostream& out; // where to write the disassembly
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const std::vector<unsigned int>& stream; // the actual word stream
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int size; // the size of the word stream
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int word; // the next word of the stream to read
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// map each <id> to the instruction that created it
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Id bound;
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std::vector<unsigned int> idInstruction; // the word offset into the stream where the instruction for result [id] starts; 0 if not yet seen (forward reference or function parameter)
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std::vector<std::string> idDescriptor; // the best text string known for explaining the <id>
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// schema
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unsigned int schema;
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// stack of structured-merge points
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std::stack<Id> nestedControl;
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Id nextNestedControl; // need a slight delay for when we are nested
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};
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void SpirvStream::validate()
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{
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size = (int)stream.size();
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if (size < 4)
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Kill(out, "stream is too short");
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// Magic number
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if (stream[word++] != MagicNumber) {
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out << "Bad magic number";
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return;
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}
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// Version
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out << "// Module Version " << std::hex << stream[word++] << std::endl;
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// Generator's magic number
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out << "// Generated by (magic number): " << std::hex << stream[word++] << std::dec << std::endl;
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// Result <id> bound
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bound = stream[word++];
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idInstruction.resize(bound);
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idDescriptor.resize(bound);
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out << "// Id's are bound by " << bound << std::endl;
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out << std::endl;
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// Reserved schema, must be 0 for now
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schema = stream[word++];
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if (schema != 0)
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Kill(out, "bad schema, must be 0");
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}
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// Loop over all the instructions, in order, processing each.
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// Boiler plate for each is handled here directly, the rest is dispatched.
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void SpirvStream::processInstructions()
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{
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// Instructions
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while (word < size) {
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int instructionStart = word;
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// Instruction wordCount and opcode
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unsigned int firstWord = stream[word];
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unsigned wordCount = firstWord >> WordCountShift;
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Op opCode = (Op)(firstWord & OpCodeMask);
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int nextInst = word + wordCount;
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++word;
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// Presence of full instruction
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if (nextInst > size)
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Kill(out, "stream instruction terminated too early");
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// Base for computing number of operands; will be updated as more is learned
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unsigned numOperands = wordCount - 1;
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// Type <id>
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Id typeId = 0;
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if (InstructionDesc[opCode].hasType()) {
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typeId = stream[word++];
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--numOperands;
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}
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// Result <id>
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Id resultId = 0;
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if (InstructionDesc[opCode].hasResult()) {
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resultId = stream[word++];
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--numOperands;
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// save instruction for future reference
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idInstruction[resultId] = instructionStart;
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}
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outputResultId(resultId);
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outputTypeId(typeId);
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outputIndent();
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// Hand off the Op and all its operands
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disassembleInstruction(resultId, typeId, opCode, numOperands);
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if (word != nextInst) {
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out << " ERROR, incorrect number of operands consumed. At " << word << " instead of " << nextInst << " instruction start was " << instructionStart;
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word = nextInst;
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}
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out << std::endl;
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}
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}
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void SpirvStream::outputIndent()
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{
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for (int i = 0; i < (int)nestedControl.size(); ++i)
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out << " ";
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}
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void SpirvStream::formatId(Id id, std::stringstream& idStream)
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{
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if (id >= bound)
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Kill(out, "Bad <id>");
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if (id != 0) {
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idStream << id;
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if (idDescriptor[id].size() > 0)
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idStream << "(" << idDescriptor[id] << ")";
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}
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}
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void SpirvStream::outputResultId(Id id)
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{
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const int width = 16;
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std::stringstream idStream;
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formatId(id, idStream);
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out << std::setw(width) << std::right << idStream.str();
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if (id != 0)
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out << ":";
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else
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out << " ";
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if (nestedControl.size() && id == nestedControl.top())
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nestedControl.pop();
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}
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void SpirvStream::outputTypeId(Id id)
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{
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const int width = 12;
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std::stringstream idStream;
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formatId(id, idStream);
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out << std::setw(width) << std::right << idStream.str() << " ";
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}
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void SpirvStream::outputId(Id id)
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{
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if (id >= bound)
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Kill(out, "Bad <id>");
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out << id;
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if (idDescriptor[id].size() > 0)
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out << "(" << idDescriptor[id] << ")";
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}
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void SpirvStream::outputMask(OperandClass operandClass, unsigned mask)
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{
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if (mask == 0)
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out << "None";
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else {
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for (int m = 0; m < OperandClassParams[operandClass].ceiling; ++m) {
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if (mask & (1 << m))
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out << OperandClassParams[operandClass].getName(m) << " ";
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}
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}
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}
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void SpirvStream::disassembleImmediates(int numOperands)
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{
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for (int i = 0; i < numOperands; ++i) {
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out << stream[word++];
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if (i < numOperands - 1)
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out << " ";
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}
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}
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void SpirvStream::disassembleIds(int numOperands)
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{
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for (int i = 0; i < numOperands; ++i) {
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outputId(stream[word++]);
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if (i < numOperands - 1)
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out << " ";
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}
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}
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// return the number of operands consumed by the string
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int SpirvStream::disassembleString()
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{
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int startWord = word;
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out << " \"";
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const char* wordString;
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bool done = false;
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do {
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unsigned int content = stream[word];
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wordString = (const char*)&content;
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for (int charCount = 0; charCount < 4; ++charCount) {
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if (*wordString == 0) {
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done = true;
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break;
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}
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out << *(wordString++);
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}
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++word;
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} while (! done);
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out << "\"";
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return word - startWord;
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}
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void SpirvStream::disassembleInstruction(Id resultId, Id /*typeId*/, Op opCode, int numOperands)
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{
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// Process the opcode
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out << (OpcodeString(opCode) + 2); // leave out the "Op"
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if (opCode == OpLoopMerge || opCode == OpSelectionMerge)
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nextNestedControl = stream[word];
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else if (opCode == OpBranchConditional || opCode == OpSwitch) {
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if (nextNestedControl) {
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nestedControl.push(nextNestedControl);
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nextNestedControl = 0;
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}
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} else if (opCode == OpExtInstImport) {
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idDescriptor[resultId] = (const char*)(&stream[word]);
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}
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else {
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if (idDescriptor[resultId].size() == 0) {
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switch (opCode) {
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case OpTypeInt:
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idDescriptor[resultId] = "int";
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break;
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case OpTypeFloat:
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idDescriptor[resultId] = "float";
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break;
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case OpTypeBool:
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idDescriptor[resultId] = "bool";
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break;
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case OpTypeStruct:
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idDescriptor[resultId] = "struct";
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break;
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case OpTypePointer:
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idDescriptor[resultId] = "ptr";
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break;
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case OpTypeVector:
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if (idDescriptor[stream[word]].size() > 0)
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idDescriptor[resultId].append(idDescriptor[stream[word]].begin(), idDescriptor[stream[word]].begin() + 1);
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idDescriptor[resultId].append("vec");
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switch (stream[word + 1]) {
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case 2: idDescriptor[resultId].append("2"); break;
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case 3: idDescriptor[resultId].append("3"); break;
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case 4: idDescriptor[resultId].append("4"); break;
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case 8: idDescriptor[resultId].append("8"); break;
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case 16: idDescriptor[resultId].append("16"); break;
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case 32: idDescriptor[resultId].append("32"); break;
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default: break;
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}
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break;
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default:
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break;
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}
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}
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}
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// Process the operands. Note, a new context-dependent set could be
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// swapped in mid-traversal.
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// Handle images specially, so can put out helpful strings.
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if (opCode == OpTypeImage) {
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out << " ";
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disassembleIds(1);
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out << " " << DimensionString((Dim)stream[word++]);
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out << (stream[word++] != 0 ? " depth" : "");
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out << (stream[word++] != 0 ? " array" : "");
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out << (stream[word++] != 0 ? " multi-sampled" : "");
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switch (stream[word++]) {
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case 0: out << " runtime"; break;
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case 1: out << " sampled"; break;
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case 2: out << " nonsampled"; break;
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}
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out << " format:" << ImageFormatString((ImageFormat)stream[word++]);
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if (numOperands == 8) {
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out << " " << AccessQualifierString(stream[word++]);
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}
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return;
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}
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|
// Handle all the parameterized operands
|
||
|
|
for (int op = 0; op < InstructionDesc[opCode].operands.getNum() && numOperands > 0; ++op) {
|
||
|
|
out << " ";
|
||
|
|
OperandClass operandClass = InstructionDesc[opCode].operands.getClass(op);
|
||
|
|
switch (operandClass) {
|
||
|
|
case OperandId:
|
||
|
|
case OperandScope:
|
||
|
|
case OperandMemorySemantics:
|
||
|
|
disassembleIds(1);
|
||
|
|
--numOperands;
|
||
|
|
// Get names for printing "(XXX)" for readability, *after* this id
|
||
|
|
if (opCode == OpName)
|
||
|
|
idDescriptor[stream[word - 1]] = (const char*)(&stream[word]);
|
||
|
|
break;
|
||
|
|
case OperandVariableIds:
|
||
|
|
disassembleIds(numOperands);
|
||
|
|
return;
|
||
|
|
case OperandImageOperands:
|
||
|
|
outputMask(OperandImageOperands, stream[word++]);
|
||
|
|
--numOperands;
|
||
|
|
disassembleIds(numOperands);
|
||
|
|
return;
|
||
|
|
case OperandOptionalLiteral:
|
||
|
|
case OperandVariableLiterals:
|
||
|
|
if ((opCode == OpDecorate && stream[word - 1] == DecorationBuiltIn) ||
|
||
|
|
(opCode == OpMemberDecorate && stream[word - 1] == DecorationBuiltIn)) {
|
||
|
|
out << BuiltInString(stream[word++]);
|
||
|
|
--numOperands;
|
||
|
|
++op;
|
||
|
|
}
|
||
|
|
disassembleImmediates(numOperands);
|
||
|
|
return;
|
||
|
|
case OperandVariableIdLiteral:
|
||
|
|
while (numOperands > 0) {
|
||
|
|
out << std::endl;
|
||
|
|
outputResultId(0);
|
||
|
|
outputTypeId(0);
|
||
|
|
outputIndent();
|
||
|
|
out << " Type ";
|
||
|
|
disassembleIds(1);
|
||
|
|
out << ", member ";
|
||
|
|
disassembleImmediates(1);
|
||
|
|
numOperands -= 2;
|
||
|
|
}
|
||
|
|
return;
|
||
|
|
case OperandVariableLiteralId:
|
||
|
|
while (numOperands > 0) {
|
||
|
|
out << std::endl;
|
||
|
|
outputResultId(0);
|
||
|
|
outputTypeId(0);
|
||
|
|
outputIndent();
|
||
|
|
out << " case ";
|
||
|
|
disassembleImmediates(1);
|
||
|
|
out << ": ";
|
||
|
|
disassembleIds(1);
|
||
|
|
numOperands -= 2;
|
||
|
|
}
|
||
|
|
return;
|
||
|
|
case OperandLiteralNumber:
|
||
|
|
disassembleImmediates(1);
|
||
|
|
--numOperands;
|
||
|
|
if (opCode == OpExtInst) {
|
||
|
|
ExtInstSet extInstSet = GLSL450Inst;
|
||
|
|
if (0 == memcmp("OpenCL", (const char*)(idDescriptor[stream[word-2]].c_str()), 6)) {
|
||
|
|
extInstSet = OpenCLExtInst;
|
||
|
|
}
|
||
|
|
unsigned entrypoint = stream[word - 1];
|
||
|
|
if (extInstSet == GLSL450Inst) {
|
||
|
|
if (entrypoint < GLSLstd450Count) {
|
||
|
|
out << "(" << GlslStd450DebugNames[entrypoint] << ")";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case OperandOptionalLiteralString:
|
||
|
|
case OperandLiteralString:
|
||
|
|
numOperands -= disassembleString();
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
assert(operandClass >= OperandSource && operandClass < OperandOpcode);
|
||
|
|
|
||
|
|
if (OperandClassParams[operandClass].bitmask)
|
||
|
|
outputMask(operandClass, stream[word++]);
|
||
|
|
else
|
||
|
|
out << OperandClassParams[operandClass].getName(stream[word++]);
|
||
|
|
--numOperands;
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
void GLSLstd450GetDebugNames(const char** names)
|
||
|
|
{
|
||
|
|
for (int i = 0; i < GLSLstd450Count; ++i)
|
||
|
|
names[i] = "Unknown";
|
||
|
|
|
||
|
|
names[GLSLstd450Round] = "Round";
|
||
|
|
names[GLSLstd450RoundEven] = "RoundEven";
|
||
|
|
names[GLSLstd450Trunc] = "Trunc";
|
||
|
|
names[GLSLstd450FAbs] = "FAbs";
|
||
|
|
names[GLSLstd450SAbs] = "SAbs";
|
||
|
|
names[GLSLstd450FSign] = "FSign";
|
||
|
|
names[GLSLstd450SSign] = "SSign";
|
||
|
|
names[GLSLstd450Floor] = "Floor";
|
||
|
|
names[GLSLstd450Ceil] = "Ceil";
|
||
|
|
names[GLSLstd450Fract] = "Fract";
|
||
|
|
names[GLSLstd450Radians] = "Radians";
|
||
|
|
names[GLSLstd450Degrees] = "Degrees";
|
||
|
|
names[GLSLstd450Sin] = "Sin";
|
||
|
|
names[GLSLstd450Cos] = "Cos";
|
||
|
|
names[GLSLstd450Tan] = "Tan";
|
||
|
|
names[GLSLstd450Asin] = "Asin";
|
||
|
|
names[GLSLstd450Acos] = "Acos";
|
||
|
|
names[GLSLstd450Atan] = "Atan";
|
||
|
|
names[GLSLstd450Sinh] = "Sinh";
|
||
|
|
names[GLSLstd450Cosh] = "Cosh";
|
||
|
|
names[GLSLstd450Tanh] = "Tanh";
|
||
|
|
names[GLSLstd450Asinh] = "Asinh";
|
||
|
|
names[GLSLstd450Acosh] = "Acosh";
|
||
|
|
names[GLSLstd450Atanh] = "Atanh";
|
||
|
|
names[GLSLstd450Atan2] = "Atan2";
|
||
|
|
names[GLSLstd450Pow] = "Pow";
|
||
|
|
names[GLSLstd450Exp] = "Exp";
|
||
|
|
names[GLSLstd450Log] = "Log";
|
||
|
|
names[GLSLstd450Exp2] = "Exp2";
|
||
|
|
names[GLSLstd450Log2] = "Log2";
|
||
|
|
names[GLSLstd450Sqrt] = "Sqrt";
|
||
|
|
names[GLSLstd450InverseSqrt] = "InverseSqrt";
|
||
|
|
names[GLSLstd450Determinant] = "Determinant";
|
||
|
|
names[GLSLstd450MatrixInverse] = "MatrixInverse";
|
||
|
|
names[GLSLstd450Modf] = "Modf";
|
||
|
|
names[GLSLstd450ModfStruct] = "ModfStruct";
|
||
|
|
names[GLSLstd450FMin] = "FMin";
|
||
|
|
names[GLSLstd450SMin] = "SMin";
|
||
|
|
names[GLSLstd450UMin] = "UMin";
|
||
|
|
names[GLSLstd450FMax] = "FMax";
|
||
|
|
names[GLSLstd450SMax] = "SMax";
|
||
|
|
names[GLSLstd450UMax] = "UMax";
|
||
|
|
names[GLSLstd450FClamp] = "FClamp";
|
||
|
|
names[GLSLstd450SClamp] = "SClamp";
|
||
|
|
names[GLSLstd450UClamp] = "UClamp";
|
||
|
|
names[GLSLstd450FMix] = "FMix";
|
||
|
|
names[GLSLstd450Step] = "Step";
|
||
|
|
names[GLSLstd450SmoothStep] = "SmoothStep";
|
||
|
|
names[GLSLstd450Fma] = "Fma";
|
||
|
|
names[GLSLstd450Frexp] = "Frexp";
|
||
|
|
names[GLSLstd450FrexpStruct] = "FrexpStruct";
|
||
|
|
names[GLSLstd450Ldexp] = "Ldexp";
|
||
|
|
names[GLSLstd450PackSnorm4x8] = "PackSnorm4x8";
|
||
|
|
names[GLSLstd450PackUnorm4x8] = "PackUnorm4x8";
|
||
|
|
names[GLSLstd450PackSnorm2x16] = "PackSnorm2x16";
|
||
|
|
names[GLSLstd450PackUnorm2x16] = "PackUnorm2x16";
|
||
|
|
names[GLSLstd450PackHalf2x16] = "PackHalf2x16";
|
||
|
|
names[GLSLstd450PackDouble2x32] = "PackDouble2x32";
|
||
|
|
names[GLSLstd450UnpackSnorm2x16] = "UnpackSnorm2x16";
|
||
|
|
names[GLSLstd450UnpackUnorm2x16] = "UnpackUnorm2x16";
|
||
|
|
names[GLSLstd450UnpackHalf2x16] = "UnpackHalf2x16";
|
||
|
|
names[GLSLstd450UnpackSnorm4x8] = "UnpackSnorm4x8";
|
||
|
|
names[GLSLstd450UnpackUnorm4x8] = "UnpackUnorm4x8";
|
||
|
|
names[GLSLstd450UnpackDouble2x32] = "UnpackDouble2x32";
|
||
|
|
names[GLSLstd450Length] = "Length";
|
||
|
|
names[GLSLstd450Distance] = "Distance";
|
||
|
|
names[GLSLstd450Cross] = "Cross";
|
||
|
|
names[GLSLstd450Normalize] = "Normalize";
|
||
|
|
names[GLSLstd450FaceForward] = "FaceForward";
|
||
|
|
names[GLSLstd450Reflect] = "Reflect";
|
||
|
|
names[GLSLstd450Refract] = "Refract";
|
||
|
|
names[GLSLstd450FindILsb] = "FindILsb";
|
||
|
|
names[GLSLstd450FindSMsb] = "FindSMsb";
|
||
|
|
names[GLSLstd450FindUMsb] = "FindUMsb";
|
||
|
|
names[GLSLstd450InterpolateAtCentroid] = "InterpolateAtCentroid";
|
||
|
|
names[GLSLstd450InterpolateAtSample] = "InterpolateAtSample";
|
||
|
|
names[GLSLstd450InterpolateAtOffset] = "InterpolateAtOffset";
|
||
|
|
}
|
||
|
|
|
||
|
|
void Disassemble(std::ostream& out, const std::vector<unsigned int>& stream)
|
||
|
|
{
|
||
|
|
SpirvStream SpirvStream(out, stream);
|
||
|
|
GLSLstd450GetDebugNames(GlslStd450DebugNames);
|
||
|
|
SpirvStream.validate();
|
||
|
|
SpirvStream.processInstructions();
|
||
|
|
}
|
||
|
|
|
||
|
|
}; // end namespace spv
|