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Merge pull request #948 from KhronosGroup/env-control

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Compilation-environment control
This commit is contained in:
John Kessenich 2017-06-26 15:46:36 -06:00 committed by GitHub
commit a8a8320451
9 changed files with 325 additions and 83 deletions
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161
StandAlone/StandAlone.cpp
View File

@ -148,6 +148,10 @@ const char* sourceEntryPointName = nullptr;
const char* shaderStageName = nullptr;
const char* variableName = nullptr;
std::vector<std::string> IncludeDirectoryList;
int ClientInputSemanticsVersion = 100; // maps to, say, #define VULKAN 100
int VulkanClientVersion = 100; // would map to, say, Vulkan 1.0
int OpenGLClientVersion = 450; // doesn't influence anything yet, but maps to OpenGL 4.50
unsigned int TargetVersion = 0x00001000; // maps to, say, SPIR-V 1.0
std::array<unsigned int, EShLangCount> baseSamplerBinding;
std::array<unsigned int, EShLangCount> baseTextureBinding;
@ -157,7 +161,6 @@ std::array<unsigned int, EShLangCount> baseSsboBinding;
std::array<unsigned int, EShLangCount> baseUavBinding;
std::array<std::vector<std::string>, EShLangCount> baseResourceSetBinding;
// Add things like "#define ..." to a preamble to use in the beginning of the shader.
class TPreamble {
public:
@ -337,6 +340,14 @@ void ProcessArguments(std::vector<std::unique_ptr<glslang::TWorkItem>>& workItem
ExecutableName = argv[0];
workItems.reserve(argc);
const auto bumpArg = [&]() {
if (argc > 0) {
argc--;
argv++;
}
};
// read a string directly attached to a single-letter option
const auto getStringOperand = [&](const char* desc) {
if (argv[0][2] == 0) {
printf("%s must immediately follow option (no spaces)\n", desc);
@ -345,9 +356,32 @@ void ProcessArguments(std::vector<std::unique_ptr<glslang::TWorkItem>>& workItem
return argv[0] + 2;
};
argc--;
argv++;
for (; argc >= 1; argc--, argv++) {
// read a number attached to a single-letter option
const auto getAttachedNumber = [&](const char* desc) {
int num = atoi(argv[0] + 2);
if (num == 0) {
printf("%s: expected attached non-0 number\n", desc);
exit(EFailUsage);
}
return num;
};
// minimum needed (without overriding something else) to target Vulkan SPIR-V
const auto setVulkanSpv = []() {
Options |= EOptionSpv;
Options |= EOptionVulkanRules;
Options |= EOptionLinkProgram;
};
// minimum needed (without overriding something else) to target OpenGL SPIR-V
const auto setOpenGlSpv = []() {
Options |= EOptionSpv;
Options |= EOptionLinkProgram;
// undo a -H default to Vulkan
Options &= ~EOptionVulkanRules;
};
for (bumpArg(); argc >= 1; bumpArg()) {
if (argv[0][0] == '-') {
switch (argv[0][1]) {
case '-':
@ -363,6 +397,16 @@ void ProcessArguments(std::vector<std::unique_ptr<glslang::TWorkItem>>& workItem
} else if (lowerword == "auto-map-locations" || // synonyms
lowerword == "aml") {
Options |= EOptionAutoMapLocations;
} else if (lowerword == "client") {
if (argc > 1) {
if (strcmp(argv[1], "vulkan100") == 0)
setVulkanSpv();
else if (strcmp(argv[1], "opengl100") == 0)
setOpenGlSpv();
else
Error("--client expects vulkan100 or opengl100");
}
bumpArg();
} else if (lowerword == "flatten-uniform-arrays" || // synonyms
lowerword == "flatten-uniform-array" ||
lowerword == "fua") {
@ -412,22 +456,30 @@ void ProcessArguments(std::vector<std::unique_ptr<glslang::TWorkItem>>& workItem
ProcessBindingBase(argc, argv, baseSsboBinding);
} else if (lowerword == "source-entrypoint" || // synonyms
lowerword == "sep") {
sourceEntryPointName = argv[1];
if (argc > 0) {
argc--;
argv++;
} else
if (argc <= 1)
Error("no <entry-point> provided for --source-entrypoint");
sourceEntryPointName = argv[1];
bumpArg();
break;
} else if (lowerword == "target-env") {
if (argc > 1) {
if (strcmp(argv[1], "vulkan1.0") == 0) {
setVulkanSpv();
VulkanClientVersion = 100;
} else if (strcmp(argv[1], "opengl") == 0) {
setOpenGlSpv();
OpenGLClientVersion = 450;
} else
Error("--target-env expected vulkan1.0 or opengl");
}
bumpArg();
} else if (lowerword == "variable-name" || // synonyms
lowerword == "vn") {
Options |= EOptionOutputHexadecimal;
variableName = argv[1];
if (argc > 0) {
argc--;
argv++;
} else
if (argc <= 1)
Error("no <C-variable-name> provided for --variable-name");
variableName = argv[1];
bumpArg();
break;
} else {
usage();
@ -447,38 +499,34 @@ void ProcessArguments(std::vector<std::unique_ptr<glslang::TWorkItem>>& workItem
Options |= EOptionOutputPreprocessed;
break;
case 'G':
Options |= EOptionSpv;
Options |= EOptionLinkProgram;
// undo a -H default to Vulkan
Options &= ~EOptionVulkanRules;
// OpenGL Client
setOpenGlSpv();
if (argv[0][2] != 0)
ClientInputSemanticsVersion = getAttachedNumber("-G<num> client input semantics");
break;
case 'H':
Options |= EOptionHumanReadableSpv;
if ((Options & EOptionSpv) == 0) {
// default to Vulkan
Options |= EOptionSpv;
Options |= EOptionVulkanRules;
Options |= EOptionLinkProgram;
setVulkanSpv();
}
break;
case 'I':
IncludeDirectoryList.push_back(getStringOperand("-I<dir> include path"));
break;
case 'S':
shaderStageName = argv[1];
if (argc > 0) {
argc--;
argv++;
} else
if (argc <= 1)
Error("no <stage> specified for -S");
shaderStageName = argv[1];
bumpArg();
break;
case 'U':
UserPreamble.addUndef(getStringOperand("-U<macro>: macro name"));
break;
case 'V':
Options |= EOptionSpv;
Options |= EOptionVulkanRules;
Options |= EOptionLinkProgram;
setVulkanSpv();
if (argv[0][2] != 0)
ClientInputSemanticsVersion = getAttachedNumber("-G<num> client input semantics");
break;
case 'c':
Options |= EOptionDumpConfig;
@ -490,11 +538,9 @@ void ProcessArguments(std::vector<std::unique_ptr<glslang::TWorkItem>>& workItem
// HLSL todo: entry point handle needs much more sophistication.
// This is okay for one compilation unit with one entry point.
entryPointName = argv[1];
if (argc > 0) {
argc--;
argv++;
} else
if (argc <= 1)
Error("no <entry-point> provided for -e");
bumpArg();
break;
case 'g':
Options |= EOptionDebug;
@ -512,12 +558,10 @@ void ProcessArguments(std::vector<std::unique_ptr<glslang::TWorkItem>>& workItem
Options |= EOptionMemoryLeakMode;
break;
case 'o':
binaryFileName = argv[1];
if (argc > 0) {
argc--;
argv++;
} else
if (argc <= 1)
Error("no <file> provided for -o");
binaryFileName = argv[1];
bumpArg();
break;
case 'q':
Options |= EOptionDumpReflection;
@ -715,6 +759,24 @@ void CompileAndLinkShaderUnits(std::vector<ShaderCompUnit> compUnits)
if (Options & EOptionAutoMapLocations)
shader->setAutoMapLocations(true);
// Set up the environment, some subsettings take precedence over earlier
// ways of setting things.
if (Options & EOptionSpv) {
if (Options & EOptionVulkanRules) {
shader->setEnvInput((Options & EOptionReadHlsl) ? glslang::EShSourceHlsl
: glslang::EShSourceGlsl,
compUnit.stage, glslang::EShClientVulkan, ClientInputSemanticsVersion);
shader->setEnvClient(glslang::EShClientVulkan, VulkanClientVersion);
shader->setEnvTarget(glslang::EshTargetSpv, TargetVersion);
} else {
shader->setEnvInput((Options & EOptionReadHlsl) ? glslang::EShSourceHlsl
: glslang::EShSourceGlsl,
compUnit.stage, glslang::EShClientOpenGL, ClientInputSemanticsVersion);
shader->setEnvClient(glslang::EShClientOpenGL, OpenGLClientVersion);
shader->setEnvTarget(glslang::EshTargetSpv, TargetVersion);
}
}
shaders.push_back(shader);
const int defaultVersion = Options & EOptionDefaultDesktop ? 110 : 100;
@ -1072,16 +1134,24 @@ void usage()
" -D<macro> define a pre-processor macro\n"
" -E print pre-processed GLSL; cannot be used with -l;\n"
" errors will appear on stderr.\n"
" -G create SPIR-V binary, under OpenGL semantics; turns on -l;\n"
" -G[ver] create SPIR-V binary, under OpenGL semantics; turns on -l;\n"
" default file name is <stage>.spv (-o overrides this)\n"
" 'ver', when present, is the version of the input semantics,\n"
" which will appear in #define GL_SPIRV ver\n"
" '--client opengl100' is the same as -G100\n"
" a '--target-env' for OpenGL will also imply '-G'\n"
" -H print human readable form of SPIR-V; turns on -V\n"
" -I<dir> add dir to the include search path; includer's directory\n"
" is searched first, followed by left-to-right order of -I\n"
" -S <stage> uses specified stage rather than parsing the file extension\n"
" choices for <stage> are vert, tesc, tese, geom, frag, or comp\n"
" -U<macro> undefine a pre-precossor macro\n"
" -V create SPIR-V binary, under Vulkan semantics; turns on -l;\n"
" -U<macro> undefine a pre-processor macro\n"
" -V[ver] create SPIR-V binary, under Vulkan semantics; turns on -l;\n"
" default file name is <stage>.spv (-o overrides this)\n"
" 'ver', when present, is the version of the input semantics,\n"
" which will appear in #define VULKAN ver\n"
" '--client vulkan100' is the same as -V100\n"
" a '--target-env' for Vulkan will also imply '-V'\n"
" -c configuration dump;\n"
" creates the default configuration file (redirect to a .conf file)\n"
" -d default to desktop (#version 110) when there is no shader #version\n"
@ -1104,12 +1174,12 @@ void usage()
" without explicit bindings.\n"
" --amb synonym for --auto-map-bindings\n"
" --auto-map-locations automatically locate input/output lacking\n"
" 'location'\n (fragile, not cross stage)\n"
" 'location' (fragile, not cross stage)\n"
" --aml synonym for --auto-map-locations\n"
" --client {vulkan<ver>|opengl<ver>} see -V and -G\n"
" --flatten-uniform-arrays flatten uniform texture/sampler arrays to\n"
" scalars\n"
" --fua synonym for --flatten-uniform-arrays\n"
"\n"
" --hlsl-offsets Allow block offsets to follow HLSL rules\n"
" Works independently of source language\n"
" --hlsl-iomap Perform IO mapping in HLSL register space\n"
@ -1135,6 +1205,11 @@ void usage()
" --source-entrypoint name the given shader source function is\n"
" renamed to be the entry point given in -e\n"
" --sep synonym for --source-entrypoint\n"
" --target-env {vulkan1.0|opengl} set the execution environment the generated\n"
" code will execute in (as opposed to language\n"
" semantics selected by --client)\n"
" default is 'vulkan1.0' under '--client vulkan'\n"
" default is 'opengl' under '--client opengl'\n"
" --variable-name <name> Creates a C header file that contains a\n"
" uint32_t array named <name>\n"
" initialized with the shader binary code.\n"

10
Test/runtests
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@ -127,6 +127,16 @@ diff -b $BASEDIR/glsl.-D-U.frag.out $TARGETDIR/glsl.-D-U.frag.out || HASERROR=1
$EXE -D -e main -V -i -DUNDEFED -UIN_SHADER -DFOO=200 -UUNDEFED hlsl.-D-U.frag > $TARGETDIR/hlsl.-D-U.frag.out
diff -b $BASEDIR/hlsl.-D-U.frag.out $TARGETDIR/hlsl.-D-U.frag.out || HASERROR=1
#
# Test --client and --target-env
#
$EXE --client vulkan100 spv.targetVulkan.vert || HASERROR=1
$EXE --client opengl100 spv.targetOpenGL.vert || HASERROR=1
$EXE --target-env vulkan1.0 spv.targetVulkan.vert || HASERROR=1
$EXE --target-env opengl spv.targetOpenGL.vert || HASERROR=1
$EXE -V100 spv.targetVulkan.vert || HASERROR=1
$EXE -G100 spv.targetOpenGL.vert || HASERROR=1
#
# Final checking
#

9
Test/spv.targetOpenGL.vert Executable file
View File

@ -0,0 +1,9 @@
#version 450
layout(constant_id = 3) const int a = 2;
uniform float f;
void main()
{
}

9
Test/spv.targetVulkan.vert Executable file
View File

@ -0,0 +1,9 @@
#version 450
layout(constant_id = 3) const int a = 2;
layout(push_constant) uniform pc { float f; };
void main()
{
}

3
glslang/MachineIndependent/ParseHelper.cpp
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@ -50,7 +50,8 @@ namespace glslang {
TParseContext::TParseContext(TSymbolTable& symbolTable, TIntermediate& interm, bool parsingBuiltins,
int version, EProfile profile, const SpvVersion& spvVersion, EShLanguage language,
TInfoSink& infoSink, bool forwardCompatible, EShMessages messages) :
TParseContextBase(symbolTable, interm, parsingBuiltins, version, profile, spvVersion, language, infoSink, forwardCompatible, messages),
TParseContextBase(symbolTable, interm, parsingBuiltins, version, profile, spvVersion, language,
infoSink, forwardCompatible, messages),
inMain(false),
blockName(nullptr),
limits(resources.limits),

121
glslang/MachineIndependent/ShaderLang.cpp
View File

@ -569,6 +569,73 @@ bool DeduceVersionProfile(TInfoSink& infoSink, EShLanguage stage, bool versionNo
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 = 0x00010000;
if (messages & EShMsgVulkanRules) {
spvVersion.vulkan = 100;
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;
break;
case EShClientOpenGL:
spvVersion.openGl = environment->input.dialectVersion;
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;
}
}
// 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;
}
}
}
// This is the common setup and cleanup code for PreprocessDeferred and
// CompileDeferred.
// It takes any callable with a signature of
@ -599,8 +666,8 @@ bool ProcessDeferred(
ProcessingContext& processingContext,
bool requireNonempty,
TShader::Includer& includer,
const std::string sourceEntryPointName = ""
)
const std::string sourceEntryPointName = "",
const TEnvironment* environment = nullptr) // optional way of fully setting all versions, overriding the above
{
if (! InitThread())
return false;
@ -641,6 +708,13 @@ bool ProcessDeferred(
names[s + numPre] = nullptr;
}
// Get all the stages, languages, clients, and other environment
// stuff sorted out.
EShSource source = (messages & EShMsgReadHlsl) != 0 ? EShSourceHlsl : EShSourceGlsl;
SpvVersion spvVersion;
EShLanguage stage = compiler->getLanguage();
TranslateEnvironment(environment, messages, source, stage, spvVersion);
// 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.
@ -648,11 +722,11 @@ bool ProcessDeferred(
int version = 0;
EProfile profile = ENoProfile;
bool versionNotFirstToken = false;
bool versionNotFirst = (messages & EShMsgReadHlsl) ?
true :
userInput.scanVersion(version, profile, versionNotFirstToken);
bool versionNotFirst = (source == EShSourceHlsl)
? true
: userInput.scanVersion(version, profile, versionNotFirstToken);
bool versionNotFound = version == 0;
if (forceDefaultVersionAndProfile && (messages & EShMsgReadHlsl) == 0) {
if (forceDefaultVersionAndProfile && source == EShSourceGlsl) {
if (! (messages & EShMsgSuppressWarnings) && ! versionNotFound &&
(version != defaultVersion || profile != defaultProfile)) {
compiler->infoSink.info << "Warning, (version, profile) forced to be ("
@ -669,15 +743,8 @@ bool ProcessDeferred(
version = defaultVersion;
profile = defaultProfile;
}
SpvVersion spvVersion;
if (messages & EShMsgSpvRules)
spvVersion.spv = 0x00010000; // TODO: eventually have this come from the outside
EShSource source = (messages & EShMsgReadHlsl) ? EShSourceHlsl : EShSourceGlsl;
if (messages & EShMsgVulkanRules)
spvVersion.vulkan = 100; // TODO: eventually have this come from the outside
else if (spvVersion.spv != 0)
spvVersion.openGl = 100; // TODO: eventually have this come from the outside
bool goodVersion = DeduceVersionProfile(compiler->infoSink, compiler->getLanguage(),
bool goodVersion = DeduceVersionProfile(compiler->infoSink, stage,
versionNotFirst, defaultVersion, source, version, profile, spvVersion);
bool versionWillBeError = (versionNotFound || (profile == EEsProfile && version >= 300 && versionNotFirst));
bool warnVersionNotFirst = false;
@ -694,7 +761,7 @@ bool ProcessDeferred(
intermediate.setSpv(spvVersion);
if (spvVersion.vulkan >= 100)
intermediate.setOriginUpperLeft();
if ((messages & EShMsgHlslOffsets) || (messages & EShMsgReadHlsl))
if ((messages & EShMsgHlslOffsets) || source == EShSourceHlsl)
intermediate.setHlslOffsets();
if (messages & EShMsgDebugInfo) {
intermediate.setSourceFile(names[numPre]);
@ -707,7 +774,7 @@ bool ProcessDeferred(
[MapSpvVersionToIndex(spvVersion)]
[MapProfileToIndex(profile)]
[MapSourceToIndex(source)]
[compiler->getLanguage()];
[stage];
// Dynamically allocate the symbol table so we can control when it is deallocated WRT the pool.
TSymbolTable* symbolTableMemory = new TSymbolTable;
@ -718,7 +785,7 @@ bool ProcessDeferred(
// Add built-in symbols that are potentially context dependent;
// they get popped again further down.
if (! AddContextSpecificSymbols(resources, compiler->infoSink, symbolTable, version, profile, spvVersion,
compiler->getLanguage(), source))
stage, source))
return false;
//
@ -726,14 +793,14 @@ bool ProcessDeferred(
//
TParseContextBase* parseContext = CreateParseContext(symbolTable, intermediate, version, profile, source,
compiler->getLanguage(), compiler->infoSink,
stage, compiler->infoSink,
spvVersion, forwardCompatible, messages, false, sourceEntryPointName);
TPpContext ppContext(*parseContext, names[numPre] ? names[numPre] : "", includer);
// only GLSL (bison triggered, really) needs an externally set scan context
glslang::TScanContext scanContext(*parseContext);
if ((messages & EShMsgReadHlsl) == 0)
if (source == EShSourceGlsl)
parseContext->setScanContext(&scanContext);
parseContext->setPpContext(&ppContext);
@ -1052,14 +1119,15 @@ bool CompileDeferred(
EShMessages messages, // warnings/errors/AST; things to print out
TIntermediate& intermediate,// returned tree, etc.
TShader::Includer& includer,
const std::string sourceEntryPointName = "")
const std::string sourceEntryPointName = "",
TEnvironment* environment = nullptr)
{
DoFullParse parser;
return ProcessDeferred(compiler, shaderStrings, numStrings, inputLengths, stringNames,
preamble, optLevel, resources, defaultVersion,
defaultProfile, forceDefaultVersionAndProfile,
forwardCompatible, messages, intermediate, parser,
true, includer, sourceEntryPointName);
true, includer, sourceEntryPointName, environment);
}
} // end anonymous namespace for local functions
@ -1485,6 +1553,12 @@ TShader::TShader(EShLanguage s)
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.client.client = EShClientNone;
environment.target.language = EShTargetNone;
}
TShader::~TShader()
@ -1572,7 +1646,8 @@ bool TShader::parse(const TBuiltInResource* builtInResources, int defaultVersion
return CompileDeferred(compiler, strings, numStrings, lengths, stringNames,
preamble, EShOptNone, builtInResources, defaultVersion,
defaultProfile, forceDefaultVersionAndProfile,
forwardCompatible, messages, *intermediate, includer, sourceEntryPointName);
forwardCompatible, messages, *intermediate, includer, sourceEntryPointName,
&environment);
}
// Fill in a string with the result of preprocessing ShaderStrings

4
glslang/MachineIndependent/Versions.cpp
View File

@ -355,9 +355,9 @@ void TParseVersions::getPreamble(std::string& preamble)
// #define VULKAN XXXX
const int numberBufSize = 12;
char numberBuf[numberBufSize];
if (spvVersion.vulkan > 0) {
if (spvVersion.vulkanGlsl > 0) {
preamble += "#define VULKAN ";
snprintf(numberBuf, numberBufSize, "%d", spvVersion.vulkan);
snprintf(numberBuf, numberBufSize, "%d", spvVersion.vulkanGlsl);
preamble += numberBuf;
preamble += "\n";
}

17
glslang/MachineIndependent/Versions.h
View File

@ -72,14 +72,19 @@ inline const char* ProfileName(EProfile profile)
}
//
// SPIR-V has versions for multiple things; tie them together.
// 0 means a target or rule set is not enabled.
// What source rules, validation rules, target language, etc. are needed
// desired for SPIR-V?
//
// 0 means a target or rule set is not enabled (ignore rules from that entity).
// Non-0 means to apply semantic rules arising from that version of its rule set.
// The union of all requested rule sets will be applied.
//
struct SpvVersion {
SpvVersion() : spv(0), vulkan(0), openGl(0) {}
unsigned int spv; // the version of the targeted SPIR-V, as defined by SPIR-V in word 1 of the SPIR-V binary header
int vulkan; // the version of semantics for Vulkan; e.g., for GLSL from KHR_vulkan_glsl "#define VULKAN"
int openGl; // the version of semantics for OpenGL; e.g., for GLSL from KHR_vulkan_glsl "#define GL_SPIRV"
SpvVersion() : spv(0), vulkanGlsl(0), vulkan(0), openGl(0) {}
unsigned int spv; // the version of SPIR-V to target, as defined by "word 1" of the SPIR-V binary header
int vulkanGlsl; // the version of GLSL semantics for Vulkan, from GL_KHR_vulkan_glsl, for "#define VULKAN XXX"
int vulkan; // the version of Vulkan, for which SPIR-V execution environment rules to use (100 means 1.0)
int openGl; // the version of GLSL semantics for OpenGL, from GL_ARB_gl_spirv, for "#define GL_SPIRV XXX"
};
//

58
glslang/Public/ShaderLang.h
View File

@ -112,6 +112,43 @@ typedef enum {
EShSourceHlsl,
} EShSource; // if EShLanguage were EShStage, this could be EShLanguage instead
typedef enum {
EShClientNone,
EShClientVulkan,
EShClientOpenGL,
} EShClient;
typedef enum {
EShTargetNone,
EshTargetSpv,
} EShTargetLanguage;
struct TInputLanguage {
EShSource languageFamily; // redundant information with other input, this one overrides when not EShSourceNone
EShLanguage stage; // redundant information with other input, this one overrides when not EShSourceNone
EShClient dialect;
int dialectVersion; // version of client's language definition, not the client (when not EShClientNone)
};
struct TClient {
EShClient client;
int version; // version of client itself (not the client's input dialect)
};
struct TTarget {
EShTargetLanguage language;
unsigned int version; // the version to target, if SPIR-V, defined by "word 1" of the SPIR-V binary header
};
// All source/client/target versions and settings.
// Can override previous methods of setting, when items are set here.
// Expected to grow, as more are added, rather than growing parameter lists.
struct TEnvironment {
TInputLanguage input; // definition of the input language
TClient client; // what client is the overall compilation being done for?
TTarget target; // what to generate
};
const char* StageName(EShLanguage);
} // end namespace glslang
@ -324,6 +361,25 @@ public:
void setNoStorageFormat(bool useUnknownFormat);
void setTextureSamplerTransformMode(EShTextureSamplerTransformMode mode);
// For setting up the environment (initialized in the constructor):
void setEnvInput(EShSource lang, EShLanguage stage, EShClient client, int version)
{
environment.input.languageFamily = lang;
environment.input.stage = stage;
environment.input.dialect = client;
environment.input.dialectVersion = version;
}
void setEnvClient(EShClient client, int version)
{
environment.client.client = client;
environment.client.version = version;
}
void setEnvTarget(EShTargetLanguage lang, unsigned int version)
{
environment.target.language = lang;
environment.target.version = version;
}
// Interface to #include handlers.
//
// To support #include, a client of Glslang does the following:
@ -463,6 +519,8 @@ protected:
// a function in the source string can be renamed FROM this TO the name given in setEntryPoint.
std::string sourceEntryPointName;
TEnvironment environment;
friend class TProgram;
private: