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glslang/glslang/MachineIndependent/ShaderLang.cpp

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//
// Copyright (C) 2002-2005 3Dlabs Inc. Ltd.
// Copyright (C) 2013-2016 LunarG, Inc.
// Copyright (C) 2015-2020 Google, Inc.
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
//
// Neither the name of 3Dlabs Inc. Ltd. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
//
// Implement the top-level of interface to the compiler/linker,
// as defined in ShaderLang.h
// This is the platform independent interface between an OGL driver
// and the shading language compiler/linker.
//
#include <cstring>
#include <iostream>
#include <sstream>
#include <memory>
#include <mutex>
#include "SymbolTable.h"
#include "ParseHelper.h"
#include "Scan.h"
#include "ScanContext.h"
#ifdef ENABLE_HLSL
#include "../HLSL/hlslParseHelper.h"
#include "../HLSL/hlslParseables.h"
#include "../HLSL/hlslScanContext.h"
#endif
#include "../Include/ShHandle.h"
#include "../../OGLCompilersDLL/InitializeDll.h"
#include "preprocessor/PpContext.h"
#define SH_EXPORTING
#include "../Public/ShaderLang.h"
#include "reflection.h"
#include "iomapper.h"
#include "Initialize.h"
// TODO: this really shouldn't be here, it is only because of the trial addition
// of printing pre-processed tokens, which requires knowing the string literal
// token to print ", but none of that seems appropriate for this file.
#include "preprocessor/PpTokens.h"
// Build-time generated includes
#include "glslang/build_info.h"
namespace { // anonymous namespace for file-local functions and symbols
// Total number of successful initializers of glslang: a refcount
// Shared global; access should be protected by a global mutex/critical section.
int NumberOfClients = 0;
// global initialization lock
std::mutex init_lock;
using namespace glslang;
// Create a language specific version of parseables.
TBuiltInParseables* CreateBuiltInParseables(TInfoSink& infoSink, EShSource source)
{
switch (source) {
case EShSourceGlsl: return new TBuiltIns(); // GLSL builtIns
#ifdef ENABLE_HLSL
case EShSourceHlsl: return new TBuiltInParseablesHlsl(); // HLSL intrinsics
#endif
default:
infoSink.info.message(EPrefixInternalError, "Unable to determine source language");
return nullptr;
}
}
// Create a language specific version of a parse context.
TParseContextBase* CreateParseContext(TSymbolTable& symbolTable, TIntermediate& intermediate,
int version, EProfile profile, EShSource source,
EShLanguage language, TInfoSink& infoSink,
SpvVersion spvVersion, bool forwardCompatible, EShMessages messages,
bool parsingBuiltIns, std::string sourceEntryPointName = "")
{
switch (source) {
case EShSourceGlsl: {
if (sourceEntryPointName.size() == 0)
intermediate.setEntryPointName("main");
TString entryPoint = sourceEntryPointName.c_str();
return new TParseContext(symbolTable, intermediate, parsingBuiltIns, version, profile, spvVersion,
language, infoSink, forwardCompatible, messages, &entryPoint);
}
#ifdef ENABLE_HLSL
case EShSourceHlsl:
return new HlslParseContext(symbolTable, intermediate, parsingBuiltIns, version, profile, spvVersion,
language, infoSink, sourceEntryPointName.c_str(), forwardCompatible, messages);
#endif
default:
infoSink.info.message(EPrefixInternalError, "Unable to determine source language");
return nullptr;
}
}
// Local mapping functions for making arrays of symbol tables....
const int VersionCount = 17; // index range in MapVersionToIndex
int MapVersionToIndex(int version)
{
int index = 0;
switch (version) {
case 100: index = 0; break;
case 110: index = 1; break;
case 120: index = 2; break;
case 130: index = 3; break;
case 140: index = 4; break;
case 150: index = 5; break;
case 300: index = 6; break;
case 330: index = 7; break;
case 400: index = 8; break;
case 410: index = 9; break;
case 420: index = 10; break;
case 430: index = 11; break;
case 440: index = 12; break;
case 310: index = 13; break;
case 450: index = 14; break;
case 500: index = 0; break; // HLSL
case 320: index = 15; break;
case 460: index = 16; break;
default: assert(0); break;
}
assert(index < VersionCount);
return index;
}
const int SpvVersionCount = 4; // index range in MapSpvVersionToIndex
int MapSpvVersionToIndex(const SpvVersion& spvVersion)
{
int index = 0;
if (spvVersion.openGl > 0)
index = 1;
else if (spvVersion.vulkan > 0) {
if (!spvVersion.vulkanRelaxed)
index = 2;
else
index = 3;
}
assert(index < SpvVersionCount);
return index;
}
const int ProfileCount = 4; // index range in MapProfileToIndex
int MapProfileToIndex(EProfile profile)
{
int index = 0;
switch (profile) {
case ENoProfile: index = 0; break;
case ECoreProfile: index = 1; break;
case ECompatibilityProfile: index = 2; break;
case EEsProfile: index = 3; break;
default: break;
}
assert(index < ProfileCount);
return index;
}
const int SourceCount = 2;
int MapSourceToIndex(EShSource source)
{
int index = 0;
switch (source) {
case EShSourceGlsl: index = 0; break;
case EShSourceHlsl: index = 1; break;
default: break;
}
assert(index < SourceCount);
return index;
}
// only one of these needed for non-ES; ES needs 2 for different precision defaults of built-ins
enum EPrecisionClass {
EPcGeneral,
EPcFragment,
EPcCount
};
// A process-global symbol table per version per profile for built-ins common
// to multiple stages (languages), and a process-global symbol table per version
// per profile per stage for built-ins unique to each stage. They will be sparsely
// populated, so they will only be generated as needed.
//
// Each has a different set of built-ins, and we want to preserve that from
// compile to compile.
//
TSymbolTable* CommonSymbolTable[VersionCount][SpvVersionCount][ProfileCount][SourceCount][EPcCount] = {};
TSymbolTable* SharedSymbolTables[VersionCount][SpvVersionCount][ProfileCount][SourceCount][EShLangCount] = {};
TPoolAllocator* PerProcessGPA = nullptr;
//
// Parse and add to the given symbol table the content of the given shader string.
//
bool InitializeSymbolTable(const TString& builtIns, int version, EProfile profile, const SpvVersion& spvVersion, EShLanguage language,
EShSource source, TInfoSink& infoSink, TSymbolTable& symbolTable)
{
TIntermediate intermediate(language, version, profile);
intermediate.setSource(source);
std::unique_ptr<TParseContextBase> parseContext(CreateParseContext(symbolTable, intermediate, version, profile, source,
language, infoSink, spvVersion, true, EShMsgDefault,
true));
TShader::ForbidIncluder includer;
TPpContext ppContext(*parseContext, "", includer);
TScanContext scanContext(*parseContext);
parseContext->setScanContext(&scanContext);
parseContext->setPpContext(&ppContext);
//
// Push the symbol table to give it an initial scope. This
// push should not have a corresponding pop, so that built-ins
// are preserved, and the test for an empty table fails.
//
symbolTable.push();
const char* builtInShaders[2];
size_t builtInLengths[2];
builtInShaders[0] = builtIns.c_str();
builtInLengths[0] = builtIns.size();
if (builtInLengths[0] == 0)
return true;
TInputScanner input(1, builtInShaders, builtInLengths);
if (! parseContext->parseShaderStrings(ppContext, input) != 0) {
infoSink.info.message(EPrefixInternalError, "Unable to parse built-ins");
printf("Unable to parse built-ins\n%s\n", infoSink.info.c_str());
printf("%s\n", builtInShaders[0]);
return false;
}
return true;
}
int CommonIndex(EProfile profile, EShLanguage language)
{
return (profile == EEsProfile && language == EShLangFragment) ? EPcFragment : EPcGeneral;
}
//
// To initialize per-stage shared tables, with the common table already complete.
//
void InitializeStageSymbolTable(TBuiltInParseables& builtInParseables, int version, EProfile profile, const SpvVersion& spvVersion,
EShLanguage language, EShSource source, TInfoSink& infoSink, TSymbolTable** commonTable,
TSymbolTable** symbolTables)
{
(*symbolTables[language]).adoptLevels(*commonTable[CommonIndex(profile, language)]);
InitializeSymbolTable(builtInParseables.getStageString(language), version, profile, spvVersion, language, source,
infoSink, *symbolTables[language]);
builtInParseables.identifyBuiltIns(version, profile, spvVersion, language, *symbolTables[language]);
if (profile == EEsProfile && version >= 300)
(*symbolTables[language]).setNoBuiltInRedeclarations();
if (version == 110)
(*symbolTables[language]).setSeparateNameSpaces();
}
//
// Initialize the full set of shareable symbol tables;
// The common (cross-stage) and those shareable per-stage.
//
bool InitializeSymbolTables(TInfoSink& infoSink, TSymbolTable** commonTable, TSymbolTable** symbolTables, int version, EProfile profile, const SpvVersion& spvVersion, EShSource source)
{
std::unique_ptr<TBuiltInParseables> builtInParseables(CreateBuiltInParseables(infoSink, source));
if (builtInParseables == nullptr)
return false;
builtInParseables->initialize(version, profile, spvVersion);
// do the common tables
InitializeSymbolTable(builtInParseables->getCommonString(), version, profile, spvVersion, EShLangVertex, source,
infoSink, *commonTable[EPcGeneral]);
if (profile == EEsProfile)
InitializeSymbolTable(builtInParseables->getCommonString(), version, profile, spvVersion, EShLangFragment, source,
infoSink, *commonTable[EPcFragment]);
// do the per-stage tables
// always have vertex and fragment
InitializeStageSymbolTable(*builtInParseables, version, profile, spvVersion, EShLangVertex, source,
infoSink, commonTable, symbolTables);
InitializeStageSymbolTable(*builtInParseables, version, profile, spvVersion, EShLangFragment, source,
infoSink, commonTable, symbolTables);
// check for tessellation
if ((profile != EEsProfile && version >= 150) ||
(profile == EEsProfile && version >= 310)) {
InitializeStageSymbolTable(*builtInParseables, version, profile, spvVersion, EShLangTessControl, source,
infoSink, commonTable, symbolTables);
InitializeStageSymbolTable(*builtInParseables, version, profile, spvVersion, EShLangTessEvaluation, source,
infoSink, commonTable, symbolTables);
}
// check for geometry
if ((profile != EEsProfile && version >= 150) ||
(profile == EEsProfile && version >= 310))
InitializeStageSymbolTable(*builtInParseables, version, profile, spvVersion, EShLangGeometry, source,
infoSink, commonTable, symbolTables);
// check for compute
if ((profile != EEsProfile && version >= 420) ||
(profile == EEsProfile && version >= 310))
InitializeStageSymbolTable(*builtInParseables, version, profile, spvVersion, EShLangCompute, source,
infoSink, commonTable, symbolTables);
// check for ray tracing stages
if (profile != EEsProfile && version >= 450) {
InitializeStageSymbolTable(*builtInParseables, version, profile, spvVersion, EShLangRayGen, source,
infoSink, commonTable, symbolTables);
InitializeStageSymbolTable(*builtInParseables, version, profile, spvVersion, EShLangIntersect, source,
infoSink, commonTable, symbolTables);
InitializeStageSymbolTable(*builtInParseables, version, profile, spvVersion, EShLangAnyHit, source,
infoSink, commonTable, symbolTables);
InitializeStageSymbolTable(*builtInParseables, version, profile, spvVersion, EShLangClosestHit, source,
infoSink, commonTable, symbolTables);
InitializeStageSymbolTable(*builtInParseables, version, profile, spvVersion, EShLangMiss, source,
infoSink, commonTable, symbolTables);
InitializeStageSymbolTable(*builtInParseables, version, profile, spvVersion, EShLangCallable, source,
infoSink, commonTable, symbolTables);
}
// check for mesh
if ((profile != EEsProfile && version >= 450) ||
(profile == EEsProfile && version >= 320))
InitializeStageSymbolTable(*builtInParseables, version, profile, spvVersion, EShLangMesh, source,
infoSink, commonTable, symbolTables);
// check for task
if ((profile != EEsProfile && version >= 450) ||
(profile == EEsProfile && version >= 320))
InitializeStageSymbolTable(*builtInParseables, version, profile, spvVersion, EShLangTask, source,
infoSink, commonTable, symbolTables);
return true;
}
bool AddContextSpecificSymbols(const TBuiltInResource* resources, TInfoSink& infoSink, TSymbolTable& symbolTable, int version,
EProfile profile, const SpvVersion& spvVersion, EShLanguage language, EShSource source)
{
std::unique_ptr<TBuiltInParseables> builtInParseables(CreateBuiltInParseables(infoSink, source));
if (builtInParseables == nullptr)
return false;
builtInParseables->initialize(*resources, version, profile, spvVersion, language);
InitializeSymbolTable(builtInParseables->getCommonString(), version, profile, spvVersion, language, source, infoSink, symbolTable);
builtInParseables->identifyBuiltIns(version, profile, spvVersion, language, symbolTable, *resources);
return true;
}
//
// To do this on the fly, we want to leave the current state of our thread's
// pool allocator intact, so:
// - Switch to a new pool for parsing the built-ins
// - Do the parsing, which builds the symbol table, using the new pool
// - Switch to the process-global pool to save a copy of the resulting symbol table
// - Free up the new pool used to parse the built-ins
// - Switch back to the original thread's pool
//
// This only gets done the first time any thread needs a particular symbol table
// (lazy evaluation).
//
void SetupBuiltinSymbolTable(int version, EProfile profile, const SpvVersion& spvVersion, EShSource source)
{
TInfoSink infoSink;
// Make sure only one thread tries to do this at a time
const std::lock_guard<std::mutex> lock(init_lock);
// See if it's already been done for this version/profile combination
int versionIndex = MapVersionToIndex(version);
int spvVersionIndex = MapSpvVersionToIndex(spvVersion);
int profileIndex = MapProfileToIndex(profile);
int sourceIndex = MapSourceToIndex(source);
if (CommonSymbolTable[versionIndex][spvVersionIndex][profileIndex][sourceIndex][EPcGeneral])
return;
// Switch to a new pool
TPoolAllocator& previousAllocator = GetThreadPoolAllocator();
TPoolAllocator* builtInPoolAllocator = new TPoolAllocator;
SetThreadPoolAllocator(builtInPoolAllocator);
// Dynamically allocate the local symbol tables so we can control when they are deallocated WRT when the pool is popped.
TSymbolTable* commonTable[EPcCount];
TSymbolTable* stageTables[EShLangCount];
for (int precClass = 0; precClass < EPcCount; ++precClass)
commonTable[precClass] = new TSymbolTable;
for (int stage = 0; stage < EShLangCount; ++stage)
stageTables[stage] = new TSymbolTable;
// Generate the local symbol tables using the new pool
InitializeSymbolTables(infoSink, commonTable, stageTables, version, profile, spvVersion, source);
// Switch to the process-global pool
SetThreadPoolAllocator(PerProcessGPA);
// Copy the local symbol tables from the new pool to the global tables using the process-global pool
for (int precClass = 0; precClass < EPcCount; ++precClass) {
if (! commonTable[precClass]->isEmpty()) {
CommonSymbolTable[versionIndex][spvVersionIndex][profileIndex][sourceIndex][precClass] = new TSymbolTable;
CommonSymbolTable[versionIndex][spvVersionIndex][profileIndex][sourceIndex][precClass]->copyTable(*commonTable[precClass]);
CommonSymbolTable[versionIndex][spvVersionIndex][profileIndex][sourceIndex][precClass]->readOnly();
}
}
for (int stage = 0; stage < EShLangCount; ++stage) {
if (! stageTables[stage]->isEmpty()) {
SharedSymbolTables[versionIndex][spvVersionIndex][profileIndex][sourceIndex][stage] = new TSymbolTable;
SharedSymbolTables[versionIndex][spvVersionIndex][profileIndex][sourceIndex][stage]->adoptLevels(*CommonSymbolTable
[versionIndex][spvVersionIndex][profileIndex][sourceIndex][CommonIndex(profile, (EShLanguage)stage)]);
SharedSymbolTables[versionIndex][spvVersionIndex][profileIndex][sourceIndex][stage]->copyTable(*stageTables[stage]);
SharedSymbolTables[versionIndex][spvVersionIndex][profileIndex][sourceIndex][stage]->readOnly();
}
}
// Clean up the local tables before deleting the pool they used.
for (int precClass = 0; precClass < EPcCount; ++precClass)
delete commonTable[precClass];
for (int stage = 0; stage < EShLangCount; ++stage)
delete stageTables[stage];
delete builtInPoolAllocator;
SetThreadPoolAllocator(&previousAllocator);
}
// Function to Print all builtins
void DumpBuiltinSymbolTable(TInfoSink& infoSink, const TSymbolTable& symbolTable)
{
infoSink.debug << "BuiltinSymbolTable {\n";
symbolTable.dump(infoSink, true);
infoSink.debug << "}\n";
}
// Return true if the shader was correctly specified for version/profile/stage.
bool DeduceVersionProfile(TInfoSink& infoSink, EShLanguage stage, bool versionNotFirst, int defaultVersion,
EShSource source, int& version, EProfile& profile, const SpvVersion& spvVersion)
{
const int FirstProfileVersion = 150;
bool correct = true;
if (source == EShSourceHlsl) {
version = 500; // shader model; currently a characteristic of glslang, not the input
profile = ECoreProfile; // allow doubles in prototype parsing
return correct;
}
// Get a version...
if (version == 0) {
version = defaultVersion;
// infoSink.info.message(EPrefixWarning, "#version: statement missing; use #version on first line of shader");
}
// Get a good profile...
if (profile == ENoProfile) {
if (version == 300 || version == 310 || version == 320) {
correct = false;
infoSink.info.message(EPrefixError, "#version: versions 300, 310, and 320 require specifying the 'es' profile");
profile = EEsProfile;
} else if (version == 100)
profile = EEsProfile;
else if (version >= FirstProfileVersion)
profile = ECoreProfile;
else
profile = ENoProfile;
} else {
// a profile was provided...
if (version < 150) {
correct = false;
infoSink.info.message(EPrefixError, "#version: versions before 150 do not allow a profile token");
if (version == 100)
profile = EEsProfile;
else
profile = ENoProfile;
} else if (version == 300 || version == 310 || version == 320) {
if (profile != EEsProfile) {
correct = false;
infoSink.info.message(EPrefixError, "#version: versions 300, 310, and 320 support only the es profile");
}
profile = EEsProfile;
} else {
if (profile == EEsProfile) {
correct = false;
infoSink.info.message(EPrefixError, "#version: only version 300, 310, and 320 support the es profile");
if (version >= FirstProfileVersion)
profile = ECoreProfile;
else
profile = ENoProfile;
}
// else: typical desktop case... e.g., "#version 410 core"
}
}
// Fix version...
switch (version) {
// ES versions
case 100: break;
case 300: break;
case 310: break;
case 320: break;
// desktop versions
case 110: break;
case 120: break;
case 130: break;
case 140: break;
case 150: break;
case 330: break;
case 400: break;
case 410: break;
case 420: break;
case 430: break;
case 440: break;
case 450: break;
case 460: break;
// unknown version
default:
correct = false;
infoSink.info.message(EPrefixError, "version not supported");
if (profile == EEsProfile)
version = 310;
else {
version = 450;
profile = ECoreProfile;
}
break;
}
// Correct for stage type...
switch (stage) {
case EShLangGeometry:
if ((profile == EEsProfile && version < 310) ||
(profile != EEsProfile && version < 150)) {
correct = false;
infoSink.info.message(EPrefixError, "#version: geometry shaders require es profile with version 310 or non-es profile with version 150 or above");
version = (profile == EEsProfile) ? 310 : 150;
if (profile == EEsProfile || profile == ENoProfile)
profile = ECoreProfile;
}
break;
case EShLangTessControl:
case EShLangTessEvaluation:
if ((profile == EEsProfile && version < 310) ||
(profile != EEsProfile && version < 150)) {
correct = false;
infoSink.info.message(EPrefixError, "#version: tessellation shaders require es profile with version 310 or non-es profile with version 150 or above");
version = (profile == EEsProfile) ? 310 : 400; // 150 supports the extension, correction is to 400 which does not
if (profile == EEsProfile || profile == ENoProfile)
profile = ECoreProfile;
}
break;
case EShLangCompute:
if ((profile == EEsProfile && version < 310) ||
(profile != EEsProfile && version < 420)) {
correct = false;
infoSink.info.message(EPrefixError, "#version: compute shaders require es profile with version 310 or above, or non-es profile with version 420 or above");
version = profile == EEsProfile ? 310 : 420;
}
break;
case EShLangRayGen:
case EShLangIntersect:
case EShLangAnyHit:
case EShLangClosestHit:
case EShLangMiss:
case EShLangCallable:
if (profile == EEsProfile || version < 460) {
correct = false;
infoSink.info.message(EPrefixError, "#version: ray tracing shaders require non-es profile with version 460 or above");
version = 460;
}
break;
case EShLangMesh:
case EShLangTask:
if ((profile == EEsProfile && version < 320) ||
(profile != EEsProfile && version < 450)) {
correct = false;
infoSink.info.message(EPrefixError, "#version: mesh/task shaders require es profile with version 320 or above, or non-es profile with version 450 or above");
version = profile == EEsProfile ? 320 : 450;
}
default:
break;
}
if (profile == EEsProfile && version >= 300 && versionNotFirst) {
correct = false;
infoSink.info.message(EPrefixError, "#version: statement must appear first in es-profile shader; before comments or newlines");
}
// Check for SPIR-V compatibility
if (spvVersion.spv != 0) {
switch (profile) {
case EEsProfile:
if (version < 310) {
correct = false;
infoSink.info.message(EPrefixError, "#version: ES shaders for SPIR-V require version 310 or higher");
version = 310;
}
break;
case ECompatibilityProfile:
infoSink.info.message(EPrefixError, "#version: compilation for SPIR-V does not support the compatibility profile");
break;
default:
if (spvVersion.vulkan > 0 && version < 140) {
correct = false;
infoSink.info.message(EPrefixError, "#version: Desktop shaders for Vulkan SPIR-V require version 140 or higher");
version = 140;
}
if (spvVersion.openGl >= 100 && version < 330) {
correct = false;
infoSink.info.message(EPrefixError, "#version: Desktop shaders for OpenGL SPIR-V require version 330 or higher");
version = 330;
}
break;
}
}
return correct;
}
// There are multiple paths in for setting environment stuff.
// TEnvironment takes precedence, for what it sets, so sort all this out.
// Ideally, the internal code could be made to use TEnvironment, but for
// now, translate it to the historically used parameters.
void TranslateEnvironment(const TEnvironment* environment, EShMessages& messages, EShSource& source,
EShLanguage& stage, SpvVersion& spvVersion)
{
// Set up environmental defaults, first ignoring 'environment'.
if (messages & EShMsgSpvRules)
spvVersion.spv = EShTargetSpv_1_0;
if (messages & EShMsgVulkanRules) {
spvVersion.vulkan = EShTargetVulkan_1_0;
spvVersion.vulkanGlsl = 100;
} else if (spvVersion.spv != 0)
spvVersion.openGl = 100;
// Now, override, based on any content set in 'environment'.
// 'environment' must be cleared to ESh*None settings when items
// are not being set.
if (environment != nullptr) {
// input language
if (environment->input.languageFamily != EShSourceNone) {
stage = environment->input.stage;
switch (environment->input.dialect) {
case EShClientNone:
break;
case EShClientVulkan:
spvVersion.vulkanGlsl = environment->input.dialectVersion;
spvVersion.vulkanRelaxed = environment->input.vulkanRulesRelaxed;
break;
case EShClientOpenGL:
spvVersion.openGl = environment->input.dialectVersion;
break;
case EShClientCount:
assert(0);
break;
}
switch (environment->input.languageFamily) {
case EShSourceNone:
break;
case EShSourceGlsl:
source = EShSourceGlsl;
messages = static_cast<EShMessages>(messages & ~EShMsgReadHlsl);
break;
case EShSourceHlsl:
source = EShSourceHlsl;
messages = static_cast<EShMessages>(messages | EShMsgReadHlsl);
break;
case EShSourceCount:
assert(0);
break;
}
}
// client
switch (environment->client.client) {
case EShClientVulkan:
spvVersion.vulkan = environment->client.version;
break;
default:
break;
}
// generated code
switch (environment->target.language) {
case EshTargetSpv:
spvVersion.spv = environment->target.version;
break;
default:
break;
}
}
}
// Most processes are recorded when set in the intermediate representation,
// These are the few that are not.
void RecordProcesses(TIntermediate& intermediate, EShMessages messages, const std::string& sourceEntryPointName)
{
if ((messages & EShMsgRelaxedErrors) != 0)
intermediate.addProcess("relaxed-errors");
if ((messages & EShMsgSuppressWarnings) != 0)
intermediate.addProcess("suppress-warnings");
if ((messages & EShMsgKeepUncalled) != 0)
intermediate.addProcess("keep-uncalled");
if (sourceEntryPointName.size() > 0) {
intermediate.addProcess("source-entrypoint");
intermediate.addProcessArgument(sourceEntryPointName);
}
}
// This is the common setup and cleanup code for PreprocessDeferred and
// CompileDeferred.
// It takes any callable with a signature of
// bool (TParseContextBase& parseContext, TPpContext& ppContext,
// TInputScanner& input, bool versionWillBeError,
// TSymbolTable& , TIntermediate& ,
// EShOptimizationLevel , EShMessages );
// Which returns false if a failure was detected and true otherwise.
//
template<typename ProcessingContext>
bool ProcessDeferred(
TCompiler* compiler,
const char* const shaderStrings[],
const int numStrings,
const int* inputLengths,
const char* const stringNames[],
const char* customPreamble,
const EShOptimizationLevel optLevel,
const TBuiltInResource* resources,
int defaultVersion, // use 100 for ES environment, 110 for desktop; this is the GLSL version, not SPIR-V or Vulkan
EProfile defaultProfile,
// set version/profile to defaultVersion/defaultProfile regardless of the #version
// directive in the source code
bool forceDefaultVersionAndProfile,
int overrideVersion, // overrides version specified by #verison or default version
bool forwardCompatible, // give errors for use of deprecated features
EShMessages messages, // warnings/errors/AST; things to print out
TIntermediate& intermediate, // returned tree, etc.
ProcessingContext& processingContext,
bool requireNonempty,
TShader::Includer& includer,
const std::string sourceEntryPointName = "",
const TEnvironment* environment = nullptr, // optional way of fully setting all versions, overriding the above
bool compileOnly = false)
{
// This must be undone (.pop()) by the caller, after it finishes consuming the created tree.
GetThreadPoolAllocator().push();
if (numStrings == 0)
return true;
// Move to length-based strings, rather than null-terminated strings.
// Also, add strings to include the preamble and to ensure the shader is not null,
// which lets the grammar accept what was a null (post preprocessing) shader.
//
// Shader will look like
// string 0: system preamble
// string 1: custom preamble
// string 2...numStrings+1: user's shader
// string numStrings+2: "int;"
const int numPre = 2;
const int numPost = requireNonempty? 1 : 0;
const int numTotal = numPre + numStrings + numPost;
std::unique_ptr<size_t[]> lengths(new size_t[numTotal]);
std::unique_ptr<const char*[]> strings(new const char*[numTotal]);
std::unique_ptr<const char*[]> names(new const char*[numTotal]);
for (int s = 0; s < numStrings; ++s) {
strings[s + numPre] = shaderStrings[s];
if (inputLengths == nullptr || inputLengths[s] < 0)
lengths[s + numPre] = strlen(shaderStrings[s]);
else
lengths[s + numPre] = inputLengths[s];
}
if (stringNames != nullptr) {
for (int s = 0; s < numStrings; ++s)
names[s + numPre] = stringNames[s];
} else {
for (int s = 0; s < numStrings; ++s)
names[s + numPre] = nullptr;
}
// Get all the stages, languages, clients, and other environment
// stuff sorted out.
EShSource sourceGuess = (messages & EShMsgReadHlsl) != 0 ? EShSourceHlsl : EShSourceGlsl;
SpvVersion spvVersion;
EShLanguage stage = compiler->getLanguage();
TranslateEnvironment(environment, messages, sourceGuess, stage, spvVersion);
#ifdef ENABLE_HLSL
EShSource source = sourceGuess;
if (environment != nullptr && environment->target.hlslFunctionality1)
intermediate.setHlslFunctionality1();
#else
const EShSource source = EShSourceGlsl;
#endif
// First, without using the preprocessor or parser, find the #version, so we know what
// symbol tables, processing rules, etc. to set up. This does not need the extra strings
// outlined above, just the user shader, after the system and user preambles.
glslang::TInputScanner userInput(numStrings, &strings[numPre], &lengths[numPre]);
int version = 0;
EProfile profile = ENoProfile;
bool versionNotFirstToken = false;
bool versionNotFirst = (source == EShSourceHlsl)
? true
: userInput.scanVersion(version, profile, versionNotFirstToken);
bool versionNotFound = version == 0;
if (forceDefaultVersionAndProfile && source == EShSourceGlsl) {
if (! (messages & EShMsgSuppressWarnings) && ! versionNotFound &&
(version != defaultVersion || profile != defaultProfile)) {
compiler->infoSink.info << "Warning, (version, profile) forced to be ("
<< defaultVersion << ", " << ProfileName(defaultProfile)
<< "), while in source code it is ("
<< version << ", " << ProfileName(profile) << ")\n";
}
if (versionNotFound) {
versionNotFirstToken = false;
versionNotFirst = false;
versionNotFound = false;
}
version = defaultVersion;
profile = defaultProfile;
}
if (source == EShSourceGlsl && overrideVersion != 0) {
version = overrideVersion;
}
bool goodVersion = DeduceVersionProfile(compiler->infoSink, stage,
versionNotFirst, defaultVersion, source, version, profile, spvVersion);
bool versionWillBeError = (versionNotFound || (profile == EEsProfile && version >= 300 && versionNotFirst));
bool warnVersionNotFirst = false;
if (! versionWillBeError && versionNotFirstToken) {
if (messages & EShMsgRelaxedErrors)
warnVersionNotFirst = true;
else
versionWillBeError = true;
}
intermediate.setSource(source);
intermediate.setVersion(version);
intermediate.setProfile(profile);
intermediate.setSpv(spvVersion);
RecordProcesses(intermediate, messages, sourceEntryPointName);
if (spvVersion.vulkan > 0)
intermediate.setOriginUpperLeft();
#ifdef ENABLE_HLSL
if ((messages & EShMsgHlslOffsets) || source == EShSourceHlsl)
intermediate.setHlslOffsets();
#endif
if (messages & EShMsgDebugInfo) {
intermediate.setSourceFile(names[numPre]);
for (int s = 0; s < numStrings; ++s) {
// The string may not be null-terminated, so make sure we provide
// the length along with the string.
intermediate.addSourceText(strings[numPre + s], lengths[numPre + s]);
}
}
SetupBuiltinSymbolTable(version, profile, spvVersion, source);
TSymbolTable* cachedTable = SharedSymbolTables[MapVersionToIndex(version)]
[MapSpvVersionToIndex(spvVersion)]
[MapProfileToIndex(profile)]
[MapSourceToIndex(source)]
[stage];
// Dynamically allocate the symbol table so we can control when it is deallocated WRT the pool.
std::unique_ptr<TSymbolTable> symbolTable(new TSymbolTable);
if (cachedTable)
symbolTable->adoptLevels(*cachedTable);
if (intermediate.getUniqueId() != 0)
symbolTable->overwriteUniqueId(intermediate.getUniqueId());
// Add built-in symbols that are potentially context dependent;
// they get popped again further down.
if (! AddContextSpecificSymbols(resources, compiler->infoSink, *symbolTable, version, profile, spvVersion,
stage, source)) {
return false;
}
if (messages & EShMsgBuiltinSymbolTable)
DumpBuiltinSymbolTable(compiler->infoSink, *symbolTable);
//
// Now we can process the full shader under proper symbols and rules.
//
std::unique_ptr<TParseContextBase> parseContext(CreateParseContext(*symbolTable, intermediate, version, profile, source,
stage, compiler->infoSink,
spvVersion, forwardCompatible, messages, false, sourceEntryPointName));
parseContext->compileOnly = compileOnly;
TPpContext ppContext(*parseContext, names[numPre] ? names[numPre] : "", includer);
// only GLSL (bison triggered, really) needs an externally set scan context
glslang::TScanContext scanContext(*parseContext);
if (source == EShSourceGlsl)
parseContext->setScanContext(&scanContext);
parseContext->setPpContext(&ppContext);
parseContext->setLimits(*resources);
if (! goodVersion)
parseContext->addError();
if (warnVersionNotFirst) {
TSourceLoc loc;
loc.init();
parseContext->warn(loc, "Illegal to have non-comment, non-whitespace tokens before #version", "#version", "");
}
parseContext->initializeExtensionBehavior();
// Fill in the strings as outlined above.
std::string preamble;
parseContext->getPreamble(preamble);
strings[0] = preamble.c_str();
lengths[0] = strlen(strings[0]);
names[0] = nullptr;
strings[1] = customPreamble;
lengths[1] = strlen(strings[1]);
names[1] = nullptr;
assert(2 == numPre);
if (requireNonempty) {
const int postIndex = numStrings + numPre;
strings[postIndex] = "\n int;";
lengths[postIndex] = strlen(strings[numStrings + numPre]);
names[postIndex] = nullptr;
}
TInputScanner fullInput(numStrings + numPre + numPost, strings.get(), lengths.get(), names.get(), numPre, numPost);
// Push a new symbol allocation scope that will get used for the shader's globals.
symbolTable->push();
bool success = processingContext(*parseContext, ppContext, fullInput,
versionWillBeError, *symbolTable,
intermediate, optLevel, messages);
intermediate.setUniqueId(symbolTable->getMaxSymbolId());
return success;
}
// Responsible for keeping track of the most recent source string and line in
// the preprocessor and outputting newlines appropriately if the source string
// or line changes.
class SourceLineSynchronizer {
public:
SourceLineSynchronizer(const std::function<int()>& lastSourceIndex,
std::string* output)
: getLastSourceIndex(lastSourceIndex), output(output), lastSource(-1), lastLine(0) {}
// SourceLineSynchronizer(const SourceLineSynchronizer&) = delete;
// SourceLineSynchronizer& operator=(const SourceLineSynchronizer&) = delete;
// Sets the internally tracked source string index to that of the most
// recently read token. If we switched to a new source string, returns
// true and inserts a newline. Otherwise, returns false and outputs nothing.
bool syncToMostRecentString() {
if (getLastSourceIndex() != lastSource) {
// After switching to a new source string, we need to reset lastLine
// because line number resets every time a new source string is
// used. We also need to output a newline to separate the output
// from the previous source string (if there is one).
if (lastSource != -1 || lastLine != 0)
*output += '\n';
lastSource = getLastSourceIndex();
lastLine = -1;
return true;
}
return false;
}
// Calls syncToMostRecentString() and then sets the internally tracked line
// number to tokenLine. If we switched to a new line, returns true and inserts
// newlines appropriately. Otherwise, returns false and outputs nothing.
bool syncToLine(int tokenLine) {
syncToMostRecentString();
const bool newLineStarted = lastLine < tokenLine;
for (; lastLine < tokenLine; ++lastLine) {
if (lastLine > 0) *output += '\n';
}
return newLineStarted;
}
// Sets the internally tracked line number to newLineNum.
void setLineNum(int newLineNum) { lastLine = newLineNum; }
private:
SourceLineSynchronizer& operator=(const SourceLineSynchronizer&);
// A function for getting the index of the last valid source string we've
// read tokens from.
const std::function<int()> getLastSourceIndex;
// output string for newlines.
std::string* output;
// lastSource is the source string index (starting from 0) of the last token
// processed. It is tracked in order for newlines to be inserted when a new
// source string starts. -1 means we haven't started processing any source
// string.
int lastSource;
// lastLine is the line number (starting from 1) of the last token processed.
// It is tracked in order for newlines to be inserted when a token appears
// on a new line. 0 means we haven't started processing any line in the
// current source string.
int lastLine;
};
// DoPreprocessing is a valid ProcessingContext template argument,
// which only performs the preprocessing step of compilation.
// It places the result in the "string" argument to its constructor.
//
// This is not an officially supported or fully working path.
struct DoPreprocessing {
explicit DoPreprocessing(std::string* string): outputString(string) {}
bool operator()(TParseContextBase& parseContext, TPpContext& ppContext,
TInputScanner& input, bool versionWillBeError,
TSymbolTable&, TIntermediate&,
EShOptimizationLevel, EShMessages)
{
// This is a list of tokens that do not require a space before or after.
static const std::string noNeededSpaceBeforeTokens = ";)[].,";
static const std::string noNeededSpaceAfterTokens = ".([";
glslang::TPpToken ppToken;
parseContext.setScanner(&input);
ppContext.setInput(input, versionWillBeError);
std::string outputBuffer;
SourceLineSynchronizer lineSync(
std::bind(&TInputScanner::getLastValidSourceIndex, &input), &outputBuffer);
parseContext.setExtensionCallback([&lineSync, &outputBuffer](
int line, const char* extension, const char* behavior) {
lineSync.syncToLine(line);
outputBuffer += "#extension ";
outputBuffer += extension;
outputBuffer += " : ";
outputBuffer += behavior;
});
parseContext.setLineCallback([&lineSync, &outputBuffer, &parseContext](
int curLineNum, int newLineNum, bool hasSource, int sourceNum, const char* sourceName) {
// SourceNum is the number of the source-string that is being parsed.
lineSync.syncToLine(curLineNum);
outputBuffer += "#line ";
outputBuffer += std::to_string(newLineNum);
if (hasSource) {
outputBuffer += ' ';
if (sourceName != nullptr) {
outputBuffer += '\"';
outputBuffer += sourceName;
outputBuffer += '\"';
} else {
outputBuffer += std::to_string(sourceNum);
}
}
if (parseContext.lineDirectiveShouldSetNextLine()) {
// newLineNum is the new line number for the line following the #line
// directive. So the new line number for the current line is
newLineNum -= 1;
}
outputBuffer += '\n';
// And we are at the next line of the #line directive now.
lineSync.setLineNum(newLineNum + 1);
});
parseContext.setVersionCallback(
[&lineSync, &outputBuffer](int line, int version, const char* str) {
lineSync.syncToLine(line);
outputBuffer += "#version ";
outputBuffer += std::to_string(version);
if (str) {
outputBuffer += ' ';
outputBuffer += str;
}
});
parseContext.setPragmaCallback([&lineSync, &outputBuffer](
int line, const glslang::TVector<glslang::TString>& ops) {
lineSync.syncToLine(line);
outputBuffer += "#pragma ";
for(size_t i = 0; i < ops.size(); ++i) {
outputBuffer += ops[i].c_str();
}
});
parseContext.setErrorCallback([&lineSync, &outputBuffer](
int line, const char* errorMessage) {
lineSync.syncToLine(line);
outputBuffer += "#error ";
outputBuffer += errorMessage;
});
int lastToken = EndOfInput; // lastToken records the last token processed.
std::string lastTokenName;
do {
int token = ppContext.tokenize(ppToken);
if (token == EndOfInput)
break;
bool isNewString = lineSync.syncToMostRecentString();
bool isNewLine = lineSync.syncToLine(ppToken.loc.line);
if (isNewLine) {
// Don't emit whitespace onto empty lines.
// Copy any whitespace characters at the start of a line
// from the input to the output.
outputBuffer += std::string(ppToken.loc.column - 1, ' ');
}
// Output a space in between tokens, but not at the start of a line,
// and also not around special tokens. This helps with readability
// and consistency.
if (!isNewString && !isNewLine && lastToken != EndOfInput) {
// left parenthesis need a leading space, except it is in a function-call-like context.
// examples: `for (xxx)`, `a * (b + c)`, `vec(2.0)`, `foo(x, y, z)`
if (token == '(') {
if (lastToken != PpAtomIdentifier ||
lastTokenName == "if" ||
lastTokenName == "for" ||
lastTokenName == "while" ||
lastTokenName == "switch")
outputBuffer += ' ';
} else if ((noNeededSpaceBeforeTokens.find((char)token) == std::string::npos) &&
(noNeededSpaceAfterTokens.find((char)lastToken) == std::string::npos)) {
outputBuffer += ' ';
}
}
if (token == PpAtomIdentifier)
lastTokenName = ppToken.name;
lastToken = token;
if (token == PpAtomConstString)
outputBuffer += "\"";
outputBuffer += ppToken.name;
if (token == PpAtomConstString)
outputBuffer += "\"";
} while (true);
outputBuffer += '\n';
*outputString = std::move(outputBuffer);
bool success = true;
if (parseContext.getNumErrors() > 0) {
success = false;
parseContext.infoSink.info.prefix(EPrefixError);
parseContext.infoSink.info << parseContext.getNumErrors() << " compilation errors. No code generated.\n\n";
}
return success;
}
std::string* outputString;
};
// DoFullParse is a valid ProcessingConext template argument for fully
// parsing the shader. It populates the "intermediate" with the AST.
struct DoFullParse{
bool operator()(TParseContextBase& parseContext, TPpContext& ppContext,
TInputScanner& fullInput, bool versionWillBeError,
TSymbolTable&, TIntermediate& intermediate,
EShOptimizationLevel optLevel, EShMessages messages)
{
bool success = true;
// Parse the full shader.
if (! parseContext.parseShaderStrings(ppContext, fullInput, versionWillBeError))
success = false;
if (success && intermediate.getTreeRoot()) {
if (optLevel == EShOptNoGeneration)
parseContext.infoSink.info.message(EPrefixNone, "No errors. No code generation or linking was requested.");
else
success = intermediate.postProcess(intermediate.getTreeRoot(), parseContext.getLanguage());
} else if (! success) {
parseContext.infoSink.info.prefix(EPrefixError);
parseContext.infoSink.info << parseContext.getNumErrors() << " compilation errors. No code generated.\n\n";
}
if (messages & EShMsgAST)
intermediate.output(parseContext.infoSink, true);
return success;
}
};
// Take a single compilation unit, and run the preprocessor on it.
// Return: True if there were no issues found in preprocessing,
// False if during preprocessing any unknown version, pragmas or
// extensions were found.
//
// NOTE: Doing just preprocessing to obtain a correct preprocessed shader string
// is not an officially supported or fully working path.
bool PreprocessDeferred(
TCompiler* compiler,
const char* const shaderStrings[],
const int numStrings,
const int* inputLengths,
const char* const stringNames[],
const char* preamble,
const EShOptimizationLevel optLevel,
const TBuiltInResource* resources,
int defaultVersion, // use 100 for ES environment, 110 for desktop
EProfile defaultProfile,
bool forceDefaultVersionAndProfile,
int overrideVersion, // use 0 if not overriding GLSL version
bool forwardCompatible, // give errors for use of deprecated features
EShMessages messages, // warnings/errors/AST; things to print out
TShader::Includer& includer,
TIntermediate& intermediate, // returned tree, etc.
std::string* outputString,
TEnvironment* environment = nullptr)
{
DoPreprocessing parser(outputString);
return ProcessDeferred(compiler, shaderStrings, numStrings, inputLengths, stringNames,
preamble, optLevel, resources, defaultVersion,
defaultProfile, forceDefaultVersionAndProfile, overrideVersion,
forwardCompatible, messages, intermediate, parser,
false, includer, "", environment);
}
//
// do a partial compile on the given strings for a single compilation unit
// for a potential deferred link into a single stage (and deferred full compile of that
// stage through machine-dependent compilation).
//
// all preprocessing, parsing, semantic checks, etc. for a single compilation unit
// are done here.
//
// return: the tree and other information is filled into the intermediate argument,
// and true is returned by the function for success.
//
bool CompileDeferred(
TCompiler* compiler,
const char* const shaderStrings[],
const int numStrings,
const int* inputLengths,
const char* const stringNames[],
const char* preamble,
const EShOptimizationLevel optLevel,
const TBuiltInResource* resources,
int defaultVersion, // use 100 for ES environment, 110 for desktop
EProfile defaultProfile,
bool forceDefaultVersionAndProfile,
int overrideVersion, // use 0 if not overriding GLSL version
bool forwardCompatible, // give errors for use of deprecated features
EShMessages messages, // warnings/errors/AST; things to print out
TIntermediate& intermediate,// returned tree, etc.
TShader::Includer& includer,
const std::string sourceEntryPointName = "",
TEnvironment* environment = nullptr,
bool compileOnly = false)
{
DoFullParse parser;
return ProcessDeferred(compiler, shaderStrings, numStrings, inputLengths, stringNames,
preamble, optLevel, resources, defaultVersion,
defaultProfile, forceDefaultVersionAndProfile, overrideVersion,
forwardCompatible, messages, intermediate, parser,
true, includer, sourceEntryPointName, environment, compileOnly);
}
} // end anonymous namespace for local functions
//
// ShInitialize() should be called exactly once per process, not per thread.
//
int ShInitialize()
{
if (! InitProcess())
return 0;
const std::lock_guard<std::mutex> lock(init_lock);
++NumberOfClients;
if (PerProcessGPA == nullptr)
PerProcessGPA = new TPoolAllocator();
glslang::TScanContext::fillInKeywordMap();
#ifdef ENABLE_HLSL
glslang::HlslScanContext::fillInKeywordMap();
#endif
return 1;
}
//
// Driver calls these to create and destroy compiler/linker
// objects.
//
ShHandle ShConstructCompiler(const EShLanguage language, int debugOptions)
{
if (!InitThread())
return nullptr;
TShHandleBase* base = static_cast<TShHandleBase*>(ConstructCompiler(language, debugOptions));
return reinterpret_cast<void*>(base);
}
ShHandle ShConstructLinker(const EShExecutable executable, int debugOptions)
{
if (!InitThread())
return nullptr;
TShHandleBase* base = static_cast<TShHandleBase*>(ConstructLinker(executable, debugOptions));
return reinterpret_cast<void*>(base);
}
ShHandle ShConstructUniformMap()
{
if (!InitThread())
return nullptr;
TShHandleBase* base = static_cast<TShHandleBase*>(ConstructUniformMap());
return reinterpret_cast<void*>(base);
}
void ShDestruct(ShHandle handle)
{
if (handle == nullptr)
return;
TShHandleBase* base = static_cast<TShHandleBase*>(handle);
if (base->getAsCompiler())
DeleteCompiler(base->getAsCompiler());
else if (base->getAsLinker())
DeleteLinker(base->getAsLinker());
else if (base->getAsUniformMap())
DeleteUniformMap(base->getAsUniformMap());
}
//
// Cleanup symbol tables
//
int ShFinalize()
{
const std::lock_guard<std::mutex> lock(init_lock);
--NumberOfClients;
assert(NumberOfClients >= 0);
if (NumberOfClients > 0)
return 1;
for (int version = 0; version < VersionCount; ++version) {
for (int spvVersion = 0; spvVersion < SpvVersionCount; ++spvVersion) {
for (int p = 0; p < ProfileCount; ++p) {
for (int source = 0; source < SourceCount; ++source) {
for (int stage = 0; stage < EShLangCount; ++stage) {
delete SharedSymbolTables[version][spvVersion][p][source][stage];
SharedSymbolTables[version][spvVersion][p][source][stage] = nullptr;
}
}
}
}
}
for (int version = 0; version < VersionCount; ++version) {
for (int spvVersion = 0; spvVersion < SpvVersionCount; ++spvVersion) {
for (int p = 0; p < ProfileCount; ++p) {
for (int source = 0; source < SourceCount; ++source) {
for (int pc = 0; pc < EPcCount; ++pc) {
delete CommonSymbolTable[version][spvVersion][p][source][pc];
CommonSymbolTable[version][spvVersion][p][source][pc] = nullptr;
}
}
}
}
}
if (PerProcessGPA != nullptr) {
delete PerProcessGPA;
PerProcessGPA = nullptr;
}
glslang::TScanContext::deleteKeywordMap();
#ifdef ENABLE_HLSL
glslang::HlslScanContext::deleteKeywordMap();
#endif
return 1;
}
//
// Do a full compile on the given strings for a single compilation unit
// forming a complete stage. The result of the machine dependent compilation
// is left in the provided compile object.
//
// Return: The return value is really boolean, indicating
// success (1) or failure (0).
//
int ShCompile(
const ShHandle handle,
const char* const shaderStrings[],
const int numStrings,
const int* inputLengths,
const EShOptimizationLevel optLevel,
const TBuiltInResource* resources,
int /*debugOptions*/,
int defaultVersion, // use 100 for ES environment, 110 for desktop
bool forwardCompatible, // give errors for use of deprecated features
EShMessages messages // warnings/errors/AST; things to print out
)
{
// Map the generic handle to the C++ object
if (handle == nullptr)
return 0;
TShHandleBase* base = reinterpret_cast<TShHandleBase*>(handle);
TCompiler* compiler = base->getAsCompiler();
if (compiler == nullptr)
return 0;
SetThreadPoolAllocator(compiler->getPool());
compiler->infoSink.info.erase();
compiler->infoSink.debug.erase();
TIntermediate intermediate(compiler->getLanguage());
TShader::ForbidIncluder includer;
bool success = CompileDeferred(compiler, shaderStrings, numStrings, inputLengths, nullptr,
"", optLevel, resources, defaultVersion, ENoProfile, false, 0,
forwardCompatible, messages, intermediate, includer);
//
// Call the machine dependent compiler
//
if (success && intermediate.getTreeRoot() && optLevel != EShOptNoGeneration)
success = compiler->compile(intermediate.getTreeRoot(), intermediate.getVersion(), intermediate.getProfile());
intermediate.removeTree();
// Throw away all the temporary memory used by the compilation process.
// The push was done in the CompileDeferred() call above.
GetThreadPoolAllocator().pop();
return success ? 1 : 0;
}
//
// Link the given compile objects.
//
// Return: The return value of is really boolean, indicating
// success or failure.
//
int ShLinkExt(
const ShHandle linkHandle,
const ShHandle compHandles[],
const int numHandles)
{
if (linkHandle == nullptr || numHandles == 0)
return 0;
THandleList cObjects;
for (int i = 0; i < numHandles; ++i) {
if (compHandles[i] == nullptr)
return 0;
TShHandleBase* base = reinterpret_cast<TShHandleBase*>(compHandles[i]);
if (base->getAsLinker()) {
cObjects.push_back(base->getAsLinker());
}
if (base->getAsCompiler())
cObjects.push_back(base->getAsCompiler());
if (cObjects[i] == nullptr)
return 0;
}
TShHandleBase* base = reinterpret_cast<TShHandleBase*>(linkHandle);
TLinker* linker = static_cast<TLinker*>(base->getAsLinker());
if (linker == nullptr)
return 0;
SetThreadPoolAllocator(linker->getPool());
linker->infoSink.info.erase();
for (int i = 0; i < numHandles; ++i) {
if (cObjects[i]->getAsCompiler()) {
if (! cObjects[i]->getAsCompiler()->linkable()) {
linker->infoSink.info.message(EPrefixError, "Not all shaders have valid object code.");
return 0;
}
}
}
bool ret = linker->link(cObjects);
return ret ? 1 : 0;
}
//
// ShSetEncrpytionMethod is a place-holder for specifying
// how source code is encrypted.
//
void ShSetEncryptionMethod(ShHandle handle)
{
if (handle == nullptr)
return;
}
//
// Return any compiler/linker/uniformmap log of messages for the application.
//
const char* ShGetInfoLog(const ShHandle handle)
{
if (handle == nullptr)
return nullptr;
TShHandleBase* base = static_cast<TShHandleBase*>(handle);
TInfoSink* infoSink;
if (base->getAsCompiler())
infoSink = &(base->getAsCompiler()->getInfoSink());
else if (base->getAsLinker())
infoSink = &(base->getAsLinker()->getInfoSink());
else
return nullptr;
infoSink->info << infoSink->debug.c_str();
return infoSink->info.c_str();
}
//
// Return the resulting binary code from the link process. Structure
// is machine dependent.
//
const void* ShGetExecutable(const ShHandle handle)
{
if (handle == nullptr)
return nullptr;
TShHandleBase* base = reinterpret_cast<TShHandleBase*>(handle);
TLinker* linker = static_cast<TLinker*>(base->getAsLinker());
if (linker == nullptr)
return nullptr;
return linker->getObjectCode();
}
//
// Let the linker know where the application said it's attributes are bound.
// The linker does not use these values, they are remapped by the ICD or
// hardware. It just needs them to know what's aliased.
//
// Return: The return value of is really boolean, indicating
// success or failure.
//
int ShSetVirtualAttributeBindings(const ShHandle handle, const ShBindingTable* table)
{
if (handle == nullptr)
return 0;
TShHandleBase* base = reinterpret_cast<TShHandleBase*>(handle);
TLinker* linker = static_cast<TLinker*>(base->getAsLinker());
if (linker == nullptr)
return 0;
linker->setAppAttributeBindings(table);
return 1;
}
//
// Let the linker know where the predefined attributes have to live.
//
int ShSetFixedAttributeBindings(const ShHandle handle, const ShBindingTable* table)
{
if (handle == nullptr)
return 0;
TShHandleBase* base = reinterpret_cast<TShHandleBase*>(handle);
TLinker* linker = static_cast<TLinker*>(base->getAsLinker());
if (linker == nullptr)
return 0;
linker->setFixedAttributeBindings(table);
return 1;
}
//
// Some attribute locations are off-limits to the linker...
//
int ShExcludeAttributes(const ShHandle handle, int *attributes, int count)
{
if (handle == nullptr)
return 0;
TShHandleBase* base = reinterpret_cast<TShHandleBase*>(handle);
TLinker* linker = static_cast<TLinker*>(base->getAsLinker());
if (linker == nullptr)
return 0;
linker->setExcludedAttributes(attributes, count);
return 1;
}
//
// Return the index for OpenGL to use for knowing where a uniform lives.
//
// Return: The return value of is really boolean, indicating
// success or failure.
//
int ShGetUniformLocation(const ShHandle handle, const char* name)
{
if (handle == nullptr)
return -1;
TShHandleBase* base = reinterpret_cast<TShHandleBase*>(handle);
TUniformMap* uniformMap= base->getAsUniformMap();
if (uniformMap == nullptr)
return -1;
return uniformMap->getLocation(name);
}
////////////////////////////////////////////////////////////////////////////////////////////
//
// Deferred-Lowering C++ Interface
// -----------------------------------
//
// Below is a new alternate C++ interface that might potentially replace the above
// opaque handle-based interface.
//
// See more detailed comment in ShaderLang.h
//
namespace glslang {
Version GetVersion()
{
Version version;
version.major = GLSLANG_VERSION_MAJOR;
version.minor = GLSLANG_VERSION_MINOR;
version.patch = GLSLANG_VERSION_PATCH;
version.flavor = GLSLANG_VERSION_FLAVOR;
return version;
}
#define QUOTE(s) #s
#define STR(n) QUOTE(n)
const char* GetEsslVersionString()
{
return "OpenGL ES GLSL 3.20 glslang Khronos. " STR(GLSLANG_VERSION_MAJOR) "." STR(GLSLANG_VERSION_MINOR) "." STR(
GLSLANG_VERSION_PATCH) GLSLANG_VERSION_FLAVOR;
}
const char* GetGlslVersionString()
{
return "4.60 glslang Khronos. " STR(GLSLANG_VERSION_MAJOR) "." STR(GLSLANG_VERSION_MINOR) "." STR(
GLSLANG_VERSION_PATCH) GLSLANG_VERSION_FLAVOR;
}
int GetKhronosToolId()
{
return 8;
}
bool InitializeProcess()
{
return ShInitialize() != 0;
}
void FinalizeProcess()
{
ShFinalize();
}
class TDeferredCompiler : public TCompiler {
public:
TDeferredCompiler(EShLanguage s, TInfoSink& i) : TCompiler(s, i) { }
virtual bool compile(TIntermNode*, int = 0, EProfile = ENoProfile) { return true; }
};
TShader::TShader(EShLanguage s)
: stage(s), lengths(nullptr), stringNames(nullptr), preamble(""), overrideVersion(0)
{
pool = new TPoolAllocator;
infoSink = new TInfoSink;
compiler = new TDeferredCompiler(stage, *infoSink);
intermediate = new TIntermediate(s);
// clear environment (avoid constructors in them for use in a C interface)
environment.input.languageFamily = EShSourceNone;
environment.input.dialect = EShClientNone;
environment.input.vulkanRulesRelaxed = false;
environment.client.client = EShClientNone;
environment.target.language = EShTargetNone;
environment.target.hlslFunctionality1 = false;
}
// BEGIN @MEWIN - 2022-12-08 - Added code to allow moving TShaders (and storing them inside STL containers).
TShader::TShader(TShader&& other)
{
(*this) = std::move(other);
}
TShader& TShader::operator=(TShader&& other)
{
if (this != &other)
{
pool = std::exchange(other.pool, nullptr);
stage = other.stage;
compiler = std::exchange(other.compiler, nullptr);
intermediate = std::exchange(other.intermediate, nullptr);
infoSink = std::exchange(other.infoSink, nullptr);
strings = other.strings;
lengths = other.lengths;
stringNames = other.stringNames;
numStrings = other.numStrings;
preamble = other.preamble;
sourceEntryPointName = other.sourceEntryPointName;
overrideVersion = other.overrideVersion;
environment = other.environment;
}
return *this;
}
TShader::~TShader()
{
if (infoSink)
{
delete infoSink;
delete compiler;
delete intermediate;
delete pool;
}
}
// END @MEWIN
void TShader::setStrings(const char* const* s, int n)
{
strings = s;
numStrings = n;
lengths = nullptr;
}
void TShader::setStringsWithLengths(const char* const* s, const int* l, int n)
{
strings = s;
numStrings = n;
lengths = l;
}
void TShader::setStringsWithLengthsAndNames(
const char* const* s, const int* l, const char* const* names, int n)
{
strings = s;
numStrings = n;
lengths = l;
stringNames = names;
}
void TShader::setEntryPoint(const char* entryPoint)
{
intermediate->setEntryPointName(entryPoint);
}
void TShader::setSourceEntryPoint(const char* name)
{
sourceEntryPointName = name;
}
// Log initial settings and transforms.
// See comment for class TProcesses.
void TShader::addProcesses(const std::vector<std::string>& p)
{
intermediate->addProcesses(p);
}
void TShader::setUniqueId(unsigned long long id)
{
intermediate->setUniqueId(id);
}
void TShader::setOverrideVersion(int version)
{
overrideVersion = version;
}
void TShader::setDebugInfo(bool debugInfo) { intermediate->setDebugInfo(debugInfo); }
void TShader::setInvertY(bool invert) { intermediate->setInvertY(invert); }
void TShader::setDxPositionW(bool invert) { intermediate->setDxPositionW(invert); }
void TShader::setEnhancedMsgs() { intermediate->setEnhancedMsgs(); }
void TShader::setNanMinMaxClamp(bool useNonNan) { intermediate->setNanMinMaxClamp(useNonNan); }
// Set binding base for given resource type
void TShader::setShiftBinding(TResourceType res, unsigned int base) {
intermediate->setShiftBinding(res, base);
}
// Set binding base for given resource type for a given binding set.
void TShader::setShiftBindingForSet(TResourceType res, unsigned int base, unsigned int set) {
intermediate->setShiftBindingForSet(res, base, set);
}
// Set binding base for sampler types
void TShader::setShiftSamplerBinding(unsigned int base) { setShiftBinding(EResSampler, base); }
// Set binding base for texture types (SRV)
void TShader::setShiftTextureBinding(unsigned int base) { setShiftBinding(EResTexture, base); }
// Set binding base for image types
void TShader::setShiftImageBinding(unsigned int base) { setShiftBinding(EResImage, base); }
// Set binding base for uniform buffer objects (CBV)
void TShader::setShiftUboBinding(unsigned int base) { setShiftBinding(EResUbo, base); }
// Synonym for setShiftUboBinding, to match HLSL language.
void TShader::setShiftCbufferBinding(unsigned int base) { setShiftBinding(EResUbo, base); }
// Set binding base for UAV (unordered access view)
void TShader::setShiftUavBinding(unsigned int base) { setShiftBinding(EResUav, base); }
// Set binding base for SSBOs
void TShader::setShiftSsboBinding(unsigned int base) { setShiftBinding(EResSsbo, base); }
// Enables binding automapping using TIoMapper
void TShader::setAutoMapBindings(bool map) { intermediate->setAutoMapBindings(map); }
// Enables position.Y output negation in vertex shader
// Fragile: currently within one stage: simple auto-assignment of location
void TShader::setAutoMapLocations(bool map) { intermediate->setAutoMapLocations(map); }
void TShader::addUniformLocationOverride(const char* name, int loc)
{
intermediate->addUniformLocationOverride(name, loc);
}
void TShader::setUniformLocationBase(int base)
{
intermediate->setUniformLocationBase(base);
}
void TShader::setNoStorageFormat(bool useUnknownFormat) { intermediate->setNoStorageFormat(useUnknownFormat); }
void TShader::setResourceSetBinding(const std::vector<std::string>& base) { intermediate->setResourceSetBinding(base); }
void TShader::setTextureSamplerTransformMode(EShTextureSamplerTransformMode mode) { intermediate->setTextureSamplerTransformMode(mode); }
void TShader::addBlockStorageOverride(const char* nameStr, TBlockStorageClass backing) { intermediate->addBlockStorageOverride(nameStr, backing); }
void TShader::setGlobalUniformBlockName(const char* name) { intermediate->setGlobalUniformBlockName(name); }
void TShader::setGlobalUniformSet(unsigned int set) { intermediate->setGlobalUniformSet(set); }
void TShader::setGlobalUniformBinding(unsigned int binding) { intermediate->setGlobalUniformBinding(binding); }
void TShader::setAtomicCounterBlockName(const char* name) { intermediate->setAtomicCounterBlockName(name); }
void TShader::setAtomicCounterBlockSet(unsigned int set) { intermediate->setAtomicCounterBlockSet(set); }
#ifdef ENABLE_HLSL
// See comment above TDefaultHlslIoMapper in iomapper.cpp:
void TShader::setHlslIoMapping(bool hlslIoMap) { intermediate->setHlslIoMapping(hlslIoMap); }
void TShader::setFlattenUniformArrays(bool flatten) { intermediate->setFlattenUniformArrays(flatten); }
#endif
//
// Turn the shader strings into a parse tree in the TIntermediate.
//
// Returns true for success.
//
bool TShader::parse(const TBuiltInResource* builtInResources, int defaultVersion, EProfile defaultProfile, bool forceDefaultVersionAndProfile,
bool forwardCompatible, EShMessages messages, Includer& includer)
{
if (! InitThread())
return false;
SetThreadPoolAllocator(pool);
if (! preamble)
preamble = "";
return CompileDeferred(compiler, strings, numStrings, lengths, stringNames,
preamble, EShOptNone, builtInResources, defaultVersion,
defaultProfile, forceDefaultVersionAndProfile, overrideVersion,
forwardCompatible, messages, *intermediate, includer, sourceEntryPointName,
&environment, compileOnly);
}
// Fill in a string with the result of preprocessing ShaderStrings
// Returns true if all extensions, pragmas and version strings were valid.
//
// NOTE: Doing just preprocessing to obtain a correct preprocessed shader string
// is not an officially supported or fully working path.
bool TShader::preprocess(const TBuiltInResource* builtInResources,
int defaultVersion, EProfile defaultProfile,
bool forceDefaultVersionAndProfile,
bool forwardCompatible, EShMessages message,
std::string* output_string,
Includer& includer)
{
if (! InitThread())
return false;
SetThreadPoolAllocator(pool);
if (! preamble)
preamble = "";
return PreprocessDeferred(compiler, strings, numStrings, lengths, stringNames, preamble,
EShOptNone, builtInResources, defaultVersion,
defaultProfile, forceDefaultVersionAndProfile, overrideVersion,
forwardCompatible, message, includer, *intermediate, output_string,
&environment);
}
const char* TShader::getInfoLog()
{
return infoSink->info.c_str();
}
const char* TShader::getInfoDebugLog()
{
return infoSink->debug.c_str();
}
TProgram::TProgram() : reflection(nullptr), linked(false)
{
pool = new TPoolAllocator;
infoSink = new TInfoSink;
for (int s = 0; s < EShLangCount; ++s) {
intermediate[s] = nullptr;
newedIntermediate[s] = false;
}
}
TProgram::~TProgram()
{
delete infoSink;
delete reflection;
for (int s = 0; s < EShLangCount; ++s)
if (newedIntermediate[s])
delete intermediate[s];
delete pool;
}
//
// Merge the compilation units within each stage into a single TIntermediate.
// All starting compilation units need to be the result of calling TShader::parse().
//
// Return true for success.
//
bool TProgram::link(EShMessages messages)
{
if (linked)
return false;
linked = true;
bool error = false;
SetThreadPoolAllocator(pool);
for (int s = 0; s < EShLangCount; ++s) {
if (! linkStage((EShLanguage)s, messages))
error = true;
}
if (!error) {
if (! crossStageCheck(messages))
error = true;
}
return ! error;
}
//
// Merge the compilation units within the given stage into a single TIntermediate.
//
// Return true for success.
//
bool TProgram::linkStage(EShLanguage stage, EShMessages messages)
{
if (stages[stage].size() == 0)
return true;
int numEsShaders = 0, numNonEsShaders = 0;
for (auto it = stages[stage].begin(); it != stages[stage].end(); ++it) {
if ((*it)->intermediate->getProfile() == EEsProfile) {
numEsShaders++;
} else {
numNonEsShaders++;
}
}
if (numEsShaders > 0 && numNonEsShaders > 0) {
infoSink->info.message(EPrefixError, "Cannot mix ES profile with non-ES profile shaders");
return false;
} else if (numEsShaders > 1) {
infoSink->info.message(EPrefixError, "Cannot attach multiple ES shaders of the same type to a single program");
return false;
}
//
// Be efficient for the common single compilation unit per stage case,
// reusing it's TIntermediate instead of merging into a new one.
//
TIntermediate *firstIntermediate = stages[stage].front()->intermediate;
if (stages[stage].size() == 1)
intermediate[stage] = firstIntermediate;
else {
intermediate[stage] = new TIntermediate(stage,
firstIntermediate->getVersion(),
firstIntermediate->getProfile());
intermediate[stage]->setLimits(firstIntermediate->getLimits());
if (firstIntermediate->getEnhancedMsgs())
intermediate[stage]->setEnhancedMsgs();
// The new TIntermediate must use the same origin as the original TIntermediates.
// Otherwise linking will fail due to different coordinate systems.
if (firstIntermediate->getOriginUpperLeft()) {
intermediate[stage]->setOriginUpperLeft();
}
intermediate[stage]->setSpv(firstIntermediate->getSpv());
newedIntermediate[stage] = true;
}
if (messages & EShMsgAST)
infoSink->info << "\nLinked " << StageName(stage) << " stage:\n\n";
if (stages[stage].size() > 1) {
std::list<TShader*>::const_iterator it;
for (it = stages[stage].begin(); it != stages[stage].end(); ++it)
intermediate[stage]->merge(*infoSink, *(*it)->intermediate);
}
intermediate[stage]->finalCheck(*infoSink, (messages & EShMsgKeepUncalled) != 0);
if (messages & EShMsgAST)
intermediate[stage]->output(*infoSink, true);
return intermediate[stage]->getNumErrors() == 0;
}
//
// Check that there are no errors in linker objects accross stages
//
// Return true if no errors.
//
bool TProgram::crossStageCheck(EShMessages) {
// make temporary intermediates to hold the linkage symbols for each linking interface
// while we do the checks
// Independent interfaces are:
// all uniform variables and blocks
// all buffer blocks
// all in/out on a stage boundary
TVector<TIntermediate*> activeStages;
for (int s = 0; s < EShLangCount; ++s) {
if (intermediate[s])
activeStages.push_back(intermediate[s]);
}
// no extra linking if there is only one stage
if (! (activeStages.size() > 1))
return true;
// setup temporary tree to hold unfirom objects from different stages
TIntermediate* firstIntermediate = activeStages.front();
TIntermediate uniforms(EShLangCount,
firstIntermediate->getVersion(),
firstIntermediate->getProfile());
uniforms.setSpv(firstIntermediate->getSpv());
TIntermAggregate uniformObjects(EOpLinkerObjects);
TIntermAggregate root(EOpSequence);
root.getSequence().push_back(&uniformObjects);
uniforms.setTreeRoot(&root);
bool error = false;
// merge uniforms from all stages into a single intermediate
for (unsigned int i = 0; i < activeStages.size(); ++i) {
uniforms.mergeUniformObjects(*infoSink, *activeStages[i]);
}
error |= uniforms.getNumErrors() != 0;
// copy final definition of global block back into each stage
for (unsigned int i = 0; i < activeStages.size(); ++i) {
// We only want to merge into already existing global uniform blocks.
// A stage that doesn't already know about the global doesn't care about it's content.
// Otherwise we end up pointing to the same object between different stages
// and that will break binding/set remappings
bool mergeExistingOnly = true;
activeStages[i]->mergeGlobalUniformBlocks(*infoSink, uniforms, mergeExistingOnly);
}
// compare cross stage symbols for each stage boundary
for (unsigned int i = 1; i < activeStages.size(); ++i) {
activeStages[i - 1]->checkStageIO(*infoSink, *activeStages[i]);
error |= (activeStages[i - 1]->getNumErrors() != 0);
}
return !error;
}
const char* TProgram::getInfoLog()
{
return infoSink->info.c_str();
}
const char* TProgram::getInfoDebugLog()
{
return infoSink->debug.c_str();
}
//
// Reflection implementation.
//
bool TProgram::buildReflection(int opts)
{
if (! linked || reflection != nullptr)
return false;
int firstStage = EShLangVertex, lastStage = EShLangFragment;
if (opts & EShReflectionIntermediateIO) {
// if we're reflecting intermediate I/O, determine the first and last stage linked and use those as the
// boundaries for which stages generate pipeline inputs/outputs
firstStage = EShLangCount;
lastStage = 0;
for (int s = 0; s < EShLangCount; ++s) {
if (intermediate[s]) {
firstStage = std::min(firstStage, s);
lastStage = std::max(lastStage, s);
}
}
}
reflection = new TReflection((EShReflectionOptions)opts, (EShLanguage)firstStage, (EShLanguage)lastStage);
for (int s = 0; s < EShLangCount; ++s) {
if (intermediate[s]) {
if (! reflection->addStage((EShLanguage)s, *intermediate[s]))
return false;
}
}
return true;
}
unsigned TProgram::getLocalSize(int dim) const { return reflection->getLocalSize(dim); }
int TProgram::getReflectionIndex(const char* name) const { return reflection->getIndex(name); }
int TProgram::getReflectionPipeIOIndex(const char* name, const bool inOrOut) const
{ return reflection->getPipeIOIndex(name, inOrOut); }
int TProgram::getNumUniformVariables() const { return reflection->getNumUniforms(); }
const TObjectReflection& TProgram::getUniform(int index) const { return reflection->getUniform(index); }
int TProgram::getNumUniformBlocks() const { return reflection->getNumUniformBlocks(); }
const TObjectReflection& TProgram::getUniformBlock(int index) const { return reflection->getUniformBlock(index); }
int TProgram::getNumPipeInputs() const { return reflection->getNumPipeInputs(); }
const TObjectReflection& TProgram::getPipeInput(int index) const { return reflection->getPipeInput(index); }
int TProgram::getNumPipeOutputs() const { return reflection->getNumPipeOutputs(); }
const TObjectReflection& TProgram::getPipeOutput(int index) const { return reflection->getPipeOutput(index); }
int TProgram::getNumBufferVariables() const { return reflection->getNumBufferVariables(); }
const TObjectReflection& TProgram::getBufferVariable(int index) const { return reflection->getBufferVariable(index); }
int TProgram::getNumBufferBlocks() const { return reflection->getNumStorageBuffers(); }
const TObjectReflection& TProgram::getBufferBlock(int index) const { return reflection->getStorageBufferBlock(index); }
int TProgram::getNumAtomicCounters() const { return reflection->getNumAtomicCounters(); }
const TObjectReflection& TProgram::getAtomicCounter(int index) const { return reflection->getAtomicCounter(index); }
void TProgram::dumpReflection() { if (reflection != nullptr) reflection->dump(); }
//
// I/O mapping implementation.
//
bool TProgram::mapIO(TIoMapResolver* pResolver, TIoMapper* pIoMapper)
{
if (! linked)
return false;
TIoMapper* ioMapper = nullptr;
TIoMapper defaultIOMapper;
if (pIoMapper == nullptr)
ioMapper = &defaultIOMapper;
else
ioMapper = pIoMapper;
for (int s = 0; s < EShLangCount; ++s) {
if (intermediate[s]) {
if (! ioMapper->addStage((EShLanguage)s, *intermediate[s], *infoSink, pResolver))
return false;
}
}
return ioMapper->doMap(pResolver, *infoSink);
}
} // end namespace glslang
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