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Added GLSL version override interface and CLI

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This change list allows a user to override the GLSL version from the
command line or through the C and C++ interfaces. This will override the
override happens in ProcessDeferred() before DeduceVersionProfile() so
the process should still error out if the version is insufficient for
the shader code.

- Added --glsl-version <version> to CLI.
- Added parameter to route glslVersion as override version to
  preprocessor and parse functions to C++ interface.
- Updated C interface with function to override GLSL version.
This commit is contained in:
Hai Nguyen 2022-01-01 04:18:41 -05:00
parent 9b20b25138
commit 9a98d32366
5 changed files with 83 additions and 17 deletions
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7
glslang/CInterface/glslang_c_interface.cpp
View file

@ -57,6 +57,7 @@ static_assert(sizeof(glslang_resource_t) == sizeof(TBuiltInResource), "");
typedef struct glslang_shader_s {
glslang::TShader* shader;
std::string preprocessedGLSL;
int glslVersion;
} glslang_shader_t;
typedef struct glslang_program_s {
@ -373,7 +374,11 @@ GLSLANG_EXPORT void glslang_shader_set_options(glslang_shader_t* shader, int opt
if (options & GLSLANG_SHADER_VULKAN_RULES_RELAXED) {
shader->shader->setEnvInputVulkanRulesRelaxed();
}
}
GLSLANG_EXPORT void glslang_shader_set_glsl_version(glslang_shader_t* shader, int version)
{
shader->glslVersion = version;
}
GLSLANG_EXPORT const char* glslang_shader_get_preprocessed_code(glslang_shader_t* shader)
@ -390,6 +395,7 @@ GLSLANG_EXPORT int glslang_shader_preprocess(glslang_shader_t* shader, const gls
input->default_version,
c_shader_profile(input->default_profile),
input->force_default_version_and_profile != 0,
shader->glslVersion,
input->forward_compatible != 0,
(EShMessages)c_shader_messages(input->messages),
&shader->preprocessedGLSL,
@ -405,6 +411,7 @@ GLSLANG_EXPORT int glslang_shader_parse(glslang_shader_t* shader, const glslang_
return shader->shader->parse(
reinterpret_cast<const TBuiltInResource*>(input->resource),
input->default_version,
shader->glslVersion,
input->forward_compatible != 0,
(EShMessages)c_shader_messages(input->messages)
);

1
glslang/Include/glslang_c_interface.h
View file

@ -227,6 +227,7 @@ GLSLANG_EXPORT void glslang_shader_delete(glslang_shader_t* shader);
GLSLANG_EXPORT void glslang_shader_shift_binding(glslang_shader_t* shader, glslang_resource_type_t res, unsigned int base);
GLSLANG_EXPORT void glslang_shader_shift_binding_for_set(glslang_shader_t* shader, glslang_resource_type_t res, unsigned int base, unsigned int set);
GLSLANG_EXPORT void glslang_shader_set_options(glslang_shader_t* shader, int options); // glslang_shader_options_t
GLSLANG_EXPORT void glslang_shader_set_glsl_version(glslang_shader_t* shader, int version);
GLSLANG_EXPORT int glslang_shader_preprocess(glslang_shader_t* shader, const glslang_input_t* input);
GLSLANG_EXPORT int glslang_shader_parse(glslang_shader_t* shader, const glslang_input_t* input);
GLSLANG_EXPORT const char* glslang_shader_get_preprocessed_code(glslang_shader_t* shader);

21
glslang/MachineIndependent/ShaderLang.cpp
View file

@ -813,6 +813,7 @@ bool ProcessDeferred(
// 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.
@ -900,6 +901,9 @@ bool ProcessDeferred(
version = defaultVersion;
profile = defaultProfile;
}
if (source == EShSourceGlsl && overrideVersion != 0) {
version = overrideVersion;
}
bool goodVersion = DeduceVersionProfile(compiler->infoSink, stage,
versionNotFirst, defaultVersion, source, version, profile, spvVersion);
@ -1275,6 +1279,7 @@ bool PreprocessDeferred(
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,
@ -1285,7 +1290,7 @@ bool PreprocessDeferred(
DoPreprocessing parser(outputString);
return ProcessDeferred(compiler, shaderStrings, numStrings, inputLengths, stringNames,
preamble, optLevel, resources, defaultVersion,
defaultProfile, forceDefaultVersionAndProfile,
defaultProfile, forceDefaultVersionAndProfile, overrideVersion,
forwardCompatible, messages, intermediate, parser,
false, includer, "", environment);
}
@ -1314,6 +1319,7 @@ bool CompileDeferred(
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.
@ -1324,7 +1330,7 @@ bool CompileDeferred(
DoFullParse parser;
return ProcessDeferred(compiler, shaderStrings, numStrings, inputLengths, stringNames,
preamble, optLevel, resources, defaultVersion,
defaultProfile, forceDefaultVersionAndProfile,
defaultProfile, forceDefaultVersionAndProfile, overrideVersion,
forwardCompatible, messages, intermediate, parser,
true, includer, sourceEntryPointName, environment);
}
@ -1477,6 +1483,7 @@ int ShCompile(
const TBuiltInResource* resources,
int /*debugOptions*/,
int defaultVersion, // use 100 for ES environment, 110 for desktop
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
)
@ -1498,7 +1505,7 @@ int ShCompile(
TIntermediate intermediate(compiler->getLanguage());
TShader::ForbidIncluder includer;
bool success = CompileDeferred(compiler, shaderStrings, numStrings, inputLengths, nullptr,
"", optLevel, resources, defaultVersion, ENoProfile, false,
"", optLevel, resources, defaultVersion, ENoProfile, false, overrideVersion,
forwardCompatible, messages, intermediate, includer);
//
@ -1897,7 +1904,7 @@ void TShader::setFlattenUniformArrays(bool flatten) { intermediate->setFlatt
//
// Returns true for success.
//
bool TShader::parse(const TBuiltInResource* builtInResources, int defaultVersion, EProfile defaultProfile, bool forceDefaultVersionAndProfile,
bool TShader::parse(const TBuiltInResource* builtInResources, int defaultVersion, EProfile defaultProfile, bool forceDefaultVersionAndProfile, int overrideVersion,
bool forwardCompatible, EShMessages messages, Includer& includer)
{
if (! InitThread())
@ -1909,7 +1916,7 @@ bool TShader::parse(const TBuiltInResource* builtInResources, int defaultVersion
return CompileDeferred(compiler, strings, numStrings, lengths, stringNames,
preamble, EShOptNone, builtInResources, defaultVersion,
defaultProfile, forceDefaultVersionAndProfile,
defaultProfile, forceDefaultVersionAndProfile, overrideVersion,
forwardCompatible, messages, *intermediate, includer, sourceEntryPointName,
&environment);
}
@ -1922,7 +1929,7 @@ bool TShader::parse(const TBuiltInResource* builtInResources, int defaultVersion
// is not an officially supported or fully working path.
bool TShader::preprocess(const TBuiltInResource* builtInResources,
int defaultVersion, EProfile defaultProfile,
bool forceDefaultVersionAndProfile,
bool forceDefaultVersionAndProfile, int overrideVersion,
bool forwardCompatible, EShMessages message,
std::string* output_string,
Includer& includer)
@ -1936,7 +1943,7 @@ bool TShader::preprocess(const TBuiltInResource* builtInResources,
return PreprocessDeferred(compiler, strings, numStrings, lengths, stringNames, preamble,
EShOptNone, builtInResources, defaultVersion,
defaultProfile, forceDefaultVersionAndProfile,
defaultProfile, forceDefaultVersionAndProfile, overrideVersion,
forwardCompatible, message, includer, *intermediate, output_string,
&environment);
}

17
glslang/Public/ShaderLang.h
View file

@ -334,6 +334,7 @@ GLSLANG_EXPORT int ShCompile(
const TBuiltInResource *resources,
int debugOptions,
int defaultVersion = 110, // use 100 for ES environment, overridden by #version in shader
int overrideVersion = 0, // overrides #version in GLSL shader, use 0 to disable
bool forwardCompatible = false, // give errors for use of deprecated features
EShMessages messages = EShMsgDefault // warnings and errors
);
@ -647,33 +648,33 @@ public:
GLSLANG_EXPORT bool parse(
const TBuiltInResource*, int defaultVersion, EProfile defaultProfile,
bool forceDefaultVersionAndProfile, bool forwardCompatible,
bool forceDefaultVersionAndProfile, int overrideVersion, bool forwardCompatible,
EShMessages, Includer&);
bool parse(const TBuiltInResource* res, int defaultVersion, EProfile defaultProfile, bool forceDefaultVersionAndProfile,
bool parse(const TBuiltInResource* res, int defaultVersion, EProfile defaultProfile, bool forceDefaultVersionAndProfile, int overrideVersion,
bool forwardCompatible, EShMessages messages)
{
TShader::ForbidIncluder includer;
return parse(res, defaultVersion, defaultProfile, forceDefaultVersionAndProfile, forwardCompatible, messages, includer);
return parse(res, defaultVersion, defaultProfile, forceDefaultVersionAndProfile, overrideVersion, forwardCompatible, messages, includer);
}
// Equivalent to parse() without a default profile and without forcing defaults.
bool parse(const TBuiltInResource* builtInResources, int defaultVersion, bool forwardCompatible, EShMessages messages)
bool parse(const TBuiltInResource* builtInResources, int defaultVersion, int overrideVersion, bool forwardCompatible, EShMessages messages)
{
return parse(builtInResources, defaultVersion, ENoProfile, false, forwardCompatible, messages);
return parse(builtInResources, defaultVersion, ENoProfile, false, overrideVersion, forwardCompatible, messages);
}
bool parse(const TBuiltInResource* builtInResources, int defaultVersion, bool forwardCompatible, EShMessages messages,
bool parse(const TBuiltInResource* builtInResources, int defaultVersion, int overrideVersion, bool forwardCompatible, EShMessages messages,
Includer& includer)
{
return parse(builtInResources, defaultVersion, ENoProfile, false, forwardCompatible, messages, includer);
return parse(builtInResources, defaultVersion, ENoProfile, false, overrideVersion, forwardCompatible, messages, includer);
}
// NOTE: Doing just preprocessing to obtain a correct preprocessed shader string
// is not an officially supported or fully working path.
GLSLANG_EXPORT bool preprocess(
const TBuiltInResource* builtInResources, int defaultVersion,
EProfile defaultProfile, bool forceDefaultVersionAndProfile,
EProfile defaultProfile, bool forceDefaultVersionAndProfile, int overrideVersion,
bool forwardCompatible, EShMessages message, std::string* outputString,
Includer& includer);