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Add glslang::Backend to break cyclic dependency
between `HLSL` and `glslang` build targets. Applications now require a call to `glslang::RegisterHLSLBackend()` to enable the HLSL backend. This is implemented in the HLSL library. Fixes building of shared libraries.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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| // | ||
| // Copyright (C) 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. | ||
| // | ||
|
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| #include "Backend.h" | ||
| #include "ParseHelper.h" | ||
| #include "ScanContext.h" | ||
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| #include <array> | ||
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| namespace glslang { | ||
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| namespace { | ||
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| class GlslBackend : public Backend { | ||
| public: | ||
| static GlslBackend instance; | ||
|
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| void Initialize() override { | ||
| TScanContext::fillInKeywordMap(); | ||
| } | ||
|
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| void Terminate() override { | ||
| TScanContext::deleteKeywordMap(); | ||
| } | ||
|
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| EShSource Source() const override { | ||
| return EShSourceGlsl; | ||
| } | ||
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| TBuiltInParseables* CreateBuiltInParseables(TInfoSink&) override { | ||
| return new TBuiltIns(); | ||
| } | ||
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| TParseContextBase* CreateParseContext(TSymbolTable& symbolTable, TIntermediate& intermediate, | ||
| int version, EProfile profile, | ||
| EShLanguage language, TInfoSink& infoSink, | ||
| SpvVersion spvVersion, bool forwardCompatible, EShMessages messages, | ||
| bool parsingBuiltIns, std::string sourceEntryPointName) override { | ||
| 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); | ||
| } | ||
| }; | ||
|
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| GlslBackend GlslBackend::instance; | ||
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| std::array<Backend*, EShSourceCount> backends = {}; | ||
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| // Automatically register the GLSL backend when the static initializers are run | ||
| // for this compilation unit. | ||
| struct AutoRegisterGlslBackend { | ||
| AutoRegisterGlslBackend() { Backend::Register(&GlslBackend::instance); } | ||
| } autoRegisterGlslBackend; | ||
|
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| } // end anonymous namespace | ||
|
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| void Backend::InitializeAll() { | ||
| for (Backend* backend : backends) { | ||
| if (backend) { | ||
| backend->Initialize(); | ||
| } | ||
| } | ||
| } | ||
|
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| void Backend::TerminateAll() { | ||
| for (Backend* backend : backends) { | ||
| if (backend) { | ||
| backend->Terminate(); | ||
| } | ||
| } | ||
| } | ||
|
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| void Backend::Register(Backend* backend) { | ||
| EShSource source = backend->Source(); | ||
| backends[source] = backend; | ||
| } | ||
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| Backend* Backend::Get(EShSource source) { | ||
| return backends[source]; | ||
| } | ||
|
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| } // end namespace glslang | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| // | ||
| // Copyright (C) 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. | ||
| // | ||
| #ifndef _GLSLANG_BACKEND_INCLUDED_ | ||
| #define _GLSLANG_BACKEND_INCLUDED_ | ||
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| #include "Initialize.h" | ||
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| namespace glslang { | ||
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| class TParseContextBase; | ||
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| // Backend is an interface implemented by a language backend. | ||
| // Backends are registered by source (EShSource). | ||
| class Backend { | ||
| public: | ||
| virtual ~Backend() {} | ||
|
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| // Register() registers the backend. | ||
| static void Register(Backend*); | ||
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| // Get() returns the registered backend for the given source type. | ||
| static Backend* Get(EShSource source); | ||
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| // InitializeAll() initializes all the registered backends. | ||
| static void InitializeAll(); | ||
|
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| // TerminateAll() terminates all the registered backends. | ||
| static void TerminateAll(); | ||
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| // Initialize() initializes the backend. | ||
| // Must be called, once, before any other method (with exception to Source()). | ||
| virtual void Initialize() = 0; | ||
|
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| // Terminate() terminates the backend. | ||
| // Must be called, once, before process termination. | ||
| // No method may be called after calling. | ||
| virtual void Terminate() = 0; | ||
|
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| // Source() returns the EShSource that this backend implements. | ||
| virtual EShSource Source() const = 0; | ||
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| // CreateBuiltInParseables() constructs and returns the parseable strings | ||
| // for the given backend. | ||
| virtual TBuiltInParseables* CreateBuiltInParseables(TInfoSink& infoSink) = 0; | ||
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| // CreateParseContext() constructs and returns the parse context for the | ||
| // given backend. | ||
| virtual TParseContextBase* CreateParseContext(TSymbolTable& symbolTable, TIntermediate& intermediate, | ||
| int version, EProfile profile, | ||
| EShLanguage language, TInfoSink& infoSink, | ||
| SpvVersion spvVersion, bool forwardCompatible, EShMessages messages, | ||
| bool parsingBuiltIns, std::string sourceEntryPointName) = 0; | ||
| }; | ||
|
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| } // end namespace glslang | ||
|
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| #endif // _GLSLANG_BACKEND_INCLUDED_ |
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