AnyShaderConverter: propagate debug info level.

src/MagnumPlugins/AnyShaderConverter/AnyConverter.cpp

@@ -43,6 +43,8 @@ struct AnyConverter::State {
 
     Containers::Array<std::pair<Containers::String, Containers::String>> definitions;
     Containers::Array<std::pair<Containers::StringView, Containers::StringView>> definitionViews;
+
+    Containers::String debugInfoLevel;
 };
 
 AnyConverter::AnyConverter(PluginManager::Manager<AbstractConverter>& manager): AbstractConverter{manager} {}
@@ -52,9 +54,8 @@ AnyConverter::AnyConverter(PluginManager::AbstractManager& manager, const std::s
 AnyConverter::~AnyConverter() = default;
 
 ConverterFeatures AnyConverter::doFeatures() const {
-    /** @todo Optimize, DebugInfo, those also need checks that the plugin
-        actually supports them */
-    return ConverterFeature::ValidateFile|ConverterFeature::ConvertFile|ConverterFeature::Preprocess;
+    /** @todo Optimize, also need checks that the plugin actually supports it */
+    return ConverterFeature::ValidateFile|ConverterFeature::ConvertFile|ConverterFeature::Preprocess|ConverterFeature::DebugInfo;
 }
 
 void AnyConverter::doSetInputFormat(const Format format, const Containers::StringView version) {
@@ -89,6 +90,10 @@ void AnyConverter::doSetDefinitions(const Containers::ArrayView<const std::pair<
     }
 }
 
+void AnyConverter::doSetDebugInfoLevel(const Containers::StringView level) {
+    _state->debugInfoLevel = Containers::String::nullTerminatedGlobalView(level);
+}
+
 namespace {
 
 using namespace Containers::Literals;
@@ -238,14 +243,22 @@ bool AnyConverter::doConvertFileToFile(const Stage stage, const Containers::Stri
         return {};
     }
 
+    /* Check that it can output debug info, in case we were asked to */
+    if(!_state->debugInfoLevel.isEmpty() && !(converter->features() & ConverterFeature::DebugInfo)) {
+        Error{} << "ShaderTools::AnyConverter::convertFileToFile():" << metadata->name() << "does not support controlling debug info output";
+        return {};
+    }
+
     /* Propagate input/output version and flags */
     converter->setFlags(flags());
     converter->setInputFormat(_state->inputFormat, _state->inputVersion);
     converter->setOutputFormat(_state->outputFormat, _state->outputVersion);
 
-    /* Propagate definitions, if any */
+    /* Propagate definitions and debug info, if any */
     if(!_state->definitionViews.empty())
         converter->setDefinitions(_state->definitionViews);
+    if(!_state->debugInfoLevel.isEmpty())
+        converter->setDebugInfoLevel(_state->debugInfoLevel);
 
     /* Try to convert the file (error output should be printed by the plugin
        itself) */

src/MagnumPlugins/AnyShaderConverter/AnyConverter.h

@@ -130,9 +130,12 @@ class MAGNUM_ANYSHADERCONVERTER_EXPORT AnyConverter: public AbstractConverter {
 
     private:
         MAGNUM_ANYSHADERCONVERTER_LOCAL ConverterFeatures doFeatures() const override;
+
         MAGNUM_ANYSHADERCONVERTER_LOCAL void doSetInputFormat(Format, Containers::StringView version) override;
         MAGNUM_ANYSHADERCONVERTER_LOCAL void doSetOutputFormat(Format, Containers::StringView version) override;
         MAGNUM_ANYSHADERCONVERTER_LOCAL void doSetDefinitions(Containers::ArrayView<const std::pair<Containers::StringView, Containers::StringView>> definitions) override;
+        MAGNUM_ANYSHADERCONVERTER_LOCAL void doSetDebugInfoLevel(Containers::StringView level) override;
+
         MAGNUM_ANYSHADERCONVERTER_LOCAL std::pair<bool, Containers::String> doValidateFile(Stage stage, Containers::StringView filename) override;
         MAGNUM_ANYSHADERCONVERTER_LOCAL bool doConvertFileToFile(Stage stage, Containers::StringView from, Containers::StringView to) override;
 

src/MagnumPlugins/AnyShaderConverter/Test/AnyConverterTest.cpp

@@ -53,10 +53,12 @@ struct AnyConverterTest: TestSuite::Tester {
     void convert();
     void convertNotSupported();
     void convertPreprocessNotSupported();
+    void convertDebugInfoNotSupported();
     void convertPropagateFlags();
     void convertPropagateInputVersion();
     void convertPropagateOutputVersion();
     void convertPropagatePreprocess();
+    void convertPropagateDebugInfo();
 
     void detectValidate();
     void detectConvert();
@@ -103,10 +105,12 @@ AnyConverterTest::AnyConverterTest() {
               &AnyConverterTest::convert,
               &AnyConverterTest::convertNotSupported,
               &AnyConverterTest::convertPreprocessNotSupported,
+              &AnyConverterTest::convertDebugInfoNotSupported,
               &AnyConverterTest::convertPropagateFlags,
               &AnyConverterTest::convertPropagateInputVersion,
               &AnyConverterTest::convertPropagateOutputVersion,
-              &AnyConverterTest::convertPropagatePreprocess});
+              &AnyConverterTest::convertPropagatePreprocess,
+              &AnyConverterTest::convertPropagateDebugInfo});
 
     addInstancedTests({&AnyConverterTest::detectValidate},
         Containers::arraySize(DetectValidateData));
@@ -331,6 +335,29 @@ void AnyConverterTest::convertPreprocessNotSupported() {
         "ShaderTools::AnyConverter::convertFileToFile(): SpirvToolsShaderConverter does not support preprocessing\n");
 }
 
+void AnyConverterTest::convertDebugInfoNotSupported() {
+    PluginManager::Manager<AbstractConverter> manager{MAGNUM_PLUGINS_SHADERCONVERTER_INSTALL_DIR};
+    #ifdef ANYSHADERCONVERTER_PLUGIN_FILENAME
+    CORRADE_VERIFY(manager.load(ANYSHADERCONVERTER_PLUGIN_FILENAME) & PluginManager::LoadState::Loaded);
+    #endif
+
+    if(manager.load("SpirvToolsShaderConverter") < PluginManager::LoadState::Loaded)
+        CORRADE_SKIP("SpirvToolsShaderConverter plugin can't be loaded.");
+
+    Containers::Pointer<AbstractConverter> converter = manager.instantiate("AnyShaderConverter");
+
+    converter->setDebugInfoLevel("1");
+
+    std::ostringstream out;
+    Error redirectError{&out};
+    CORRADE_VERIFY(!converter->convertFileToFile({}, Utility::Directory::join(ANYSHADERCONVERTER_TEST_DIR, "file.spv"),
+    Utility::Directory::join(ANYSHADERCONVERTER_TEST_OUTPUT_DIR, "file.spvasm")));
+    /** @todo it one may support that, in which case we need to find another
+        victim */
+    CORRADE_COMPARE(out.str(),
+        "ShaderTools::AnyConverter::convertFileToFile(): SpirvToolsShaderConverter does not support controlling debug info output\n");
+}
+
 void AnyConverterTest::convertPropagateFlags() {
     PluginManager::Manager<AbstractConverter> manager{MAGNUM_PLUGINS_SHADERCONVERTER_INSTALL_DIR};
     #ifdef ANYSHADERCONVERTER_PLUGIN_FILENAME
@@ -443,6 +470,30 @@ void AnyConverterTest::convertPropagatePreprocess() {
         "WARNING: {}:10: 'different__but_also_wrong' : identifiers containing consecutive underscores (\"__\") are reserved\n", inputFilename));
 }
 
+void AnyConverterTest::convertPropagateDebugInfo() {
+    PluginManager::Manager<AbstractConverter> manager{MAGNUM_PLUGINS_SHADERCONVERTER_INSTALL_DIR};
+    #ifdef ANYSHADERCONVERTER_PLUGIN_FILENAME
+    CORRADE_VERIFY(manager.load(ANYSHADERCONVERTER_PLUGIN_FILENAME) & PluginManager::LoadState::Loaded);
+    #endif
+
+    if(manager.load("GlslangShaderConverter") < PluginManager::LoadState::Loaded)
+        CORRADE_SKIP("GlslangShaderConverter plugin can't be loaded.");
+
+    Containers::Pointer<AbstractConverter> converter = manager.instantiate("AnyShaderConverter");
+
+    /* This is an invalid level */
+    converter->setDebugInfoLevel("2");
+
+    /* We have to supply a valid file path because the version gets checked in
+       doConvertDataToData(), called from AbstractConverter::doConvertFileToFile()
+       with the file contents. */
+    std::ostringstream out;
+    Error redirectError{&out};
+    CORRADE_VERIFY(!converter->convertFileToFile(Stage::Fragment, Utility::Directory::join(ANYSHADERCONVERTER_TEST_DIR, "file.glsl"), Utility::Directory::join(ANYSHADERCONVERTER_TEST_OUTPUT_DIR, "file.spv")));
+    CORRADE_COMPARE(out.str(),
+        "ShaderTools::GlslangConverter::convertDataToData(): debug info level should be 0, 1 or empty but got 2\n");
+}
+
 void AnyConverterTest::detectValidate() {
     auto&& data = DetectValidateData[testCaseInstanceId()];
     setTestCaseDescription(data.name);