mirror of https://github.com/axmolengine/axmol.git
102 lines
3.2 KiB
C++
102 lines
3.2 KiB
C++
/****************************************************************************
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Copyright (c) 2018-2019 Xiamen Yaji Software Co., Ltd.
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https://axis-project.github.io/
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#pragma once
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#include "Macros.h"
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#include "base/CCRef.h"
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#include "platform/CCPlatformMacros.h"
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#include "Program.h"
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#include <string>
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#include <unordered_map>
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#include "ProgramStateRegistry.h"
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NS_AX_BACKEND_BEGIN
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/**
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* @addtogroup _backend
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* @{
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*/
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/**
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* Cache and reuse program object.
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*/
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class ProgramCache : public Ref
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{
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public:
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/** returns the shared instance */
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static ProgramCache* getInstance();
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/** purges the cache. It releases the retained instance. */
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static void destroyInstance();
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/// get built-in program
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backend::Program* getBuiltinProgram(uint32_t type) const;
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// get custom program, should call registerCustomProgramFactory first
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backend::Program* getCustomProgram(uint32_t type) const;
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// register custom program create factory
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void registerCustomProgramFactory(uint32_t type, std::string vertShaderSource, std::string fragShaderSource);
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/**
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* Remove a program object from cache.
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* @param program Specifies the program object to move.
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*/
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void removeProgram(backend::Program* program);
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/**
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* Remove all unused program objects from cache.
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*/
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void removeUnusedProgram();
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/**
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* Remove all program objects from cache.
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*/
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void removeAllPrograms();
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protected:
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ProgramCache() = default;
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virtual ~ProgramCache();
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/**
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* Pre-load programs into cache.
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*/
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bool init();
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void registerProgramFactory(uint32_t internalType, std::string&& vertShaderSource, std::string&& fragShaderSource);
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Program* addProgram(uint32_t internalType) const;
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std::function<Program*()> _builtinFactories[(int)ProgramType::BUILTIN_COUNT];
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std::unordered_map<uint32_t, std::function<Program*()>> _customFactories;
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mutable std::unordered_map<uint32_t, backend::Program*> _cachedPrograms; ///< The cached program object.
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static ProgramCache* _sharedProgramCache; ///< A shared instance of the program cache.
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};
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// end of _backend group
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/// @}
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NS_AX_BACKEND_END
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