CompilerLinker.hpp

/*
Copyright (C) 2017,2018,2026 Rodrigo Jose Hernandez Cordoba
 
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
 
http://www.apache.org/licenses/LICENSE-2.0
 
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#ifndef AEONGAMES_COMPILERLINKER_HPP
#define AEONGAMES_COMPILERLINKER_HPP
 
#include <array>
#include <string>
#include "glslang/Public/ShaderLang.h"
 
namespace AeonGames
{
    class CompilerLinker
    {
    public:
        // Command-line options
        enum TOptions
        {
            EOptionNone = 0,
            EOptionIntermediate = ( 1 << 0 ),
            EOptionSuppressInfolog = ( 1 << 1 ),
            EOptionMemoryLeakMode = ( 1 << 2 ),
            EOptionRelaxedErrors = ( 1 << 3 ),
            EOptionGiveWarnings = ( 1 << 4 ),
            EOptionLinkProgram = ( 1 << 5 ),
            EOptionMultiThreaded = ( 1 << 6 ),
            EOptionDumpConfig = ( 1 << 7 ),
            EOptionDumpReflection = ( 1 << 8 ),
            EOptionSuppressWarnings = ( 1 << 9 ),
            EOptionDumpVersions = ( 1 << 10 ),
            EOptionSpv = ( 1 << 11 ),
            EOptionHumanReadableSpv = ( 1 << 12 ),
            EOptionVulkanRules = ( 1 << 13 ),
            EOptionDefaultDesktop = ( 1 << 14 ),
            EOptionOutputPreprocessed = ( 1 << 15 ),
            EOptionOutputHexadecimal = ( 1 << 16 ),
            EOptionReadHlsl = ( 1 << 17 ),
            EOptionCascadingErrors = ( 1 << 18 ),
            EOptionAutoMapBindings = ( 1 << 19 ),
            EOptionFlattenUniformArrays = ( 1 << 20 ),
            EOptionNoStorageFormat = ( 1 << 21 ),
            EOptionKeepUncalled = ( 1 << 22 ),
        };

        //
        // Return codes from main/exit().
        //
        enum FailCode
        {
            ESuccess = 0,
            EFailCompile,
            EFailLink,
        };

        CompilerLinker ( TOptions aOptions = static_cast<TOptions> ( EOptionSpv | EOptionVulkanRules | EOptionLinkProgram ) );
        ~CompilerLinker();
        void AddShaderSource ( EShLanguage aStage, const char* aSource );
        void RemoveShaderSource ( EShLanguage aStage );
        FailCode CompileAndLink();
        const std::vector<uint32_t>& GetSpirV ( EShLanguage aStage ) const;
        const std::string& GetLog() const;
    private:
        void SetMessageOptions ( EShMessages& messages ) const;
        TOptions mOptions;
        std::string mLog;
        std::array<const char*, EShLangCount> mShaderCompilationUnits {{nullptr}};
        std::array<uint32_t, EShLangCount> mBaseSamplerBinding{{0}};
        std::array<uint32_t, EShLangCount> mBaseTextureBinding{ { 0 } };
        std::array<uint32_t, EShLangCount> mBaseImageBinding{ { 0 } };
        std::array<uint32_t, EShLangCount> mBaseUboBinding{ { 0 } };
        std::array<std::vector<uint32_t>, EShLangCount> mSpirV;
    };
}
#endif