1 // Copyright (C) 2017 The Android Open Source Project 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #pragma once 16 17 #include "OpenGLESDispatch/EGLDispatch.h" 18 #include "OpenGLESDispatch/GLESv1Dispatch.h" 19 #include "OpenGLESDispatch/GLESv2Dispatch.h" 20 21 namespace emugl { 22 23 // Helper classes to hold global EGLDispatch, GLESv1Dispatch and GLESv2Dispatch 24 // objects, initialized lazily in a thread-safe way. The instances are leaked on 25 // program exit. 26 27 struct LazyLoadedGLESv1Dispatch { 28 // Return pointer to global GLESv1Dispatch instance, or nullptr if there 29 // was an error when trying to initialize/load the library. 30 static const GLESv1Dispatch* get(); 31 32 LazyLoadedGLESv1Dispatch(); 33 34 private: 35 bool mValid; 36 }; 37 38 struct LazyLoadedGLESv2Dispatch { 39 // Return pointer to global GLESv2Dispatch instance, or nullptr if there 40 // was an error when trying to initialize/load the library. 41 static const GLESv2Dispatch* get(); 42 43 LazyLoadedGLESv2Dispatch(); 44 45 private: 46 bool mValid; 47 }; 48 49 // Note that the dispatch table is provided by libOpenGLESDispatch as the 50 // 's_egl' global variable. 51 struct LazyLoadedEGLDispatch { 52 // Return pointer to EGLDispatch table, or nullptr if there was 53 // an error when trying to initialize/load the library. 54 static const EGLDispatch* get(); 55 56 LazyLoadedEGLDispatch(); 57 58 private: 59 bool mValid; 60 }; 61 62 } // namespace emugl