105 lines
3.0 KiB
C++
105 lines
3.0 KiB
C++
/*
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* Copyright 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//--------------------------------------------------------------------------------
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// glContext.h
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//--------------------------------------------------------------------------------
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#ifndef GLCONTEXT_H_
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#define GLCONTEXT_H_
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#include <android/sensor.h>
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#include <android/log.h>
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#include <android_native_app_glue.h>
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#include <android/native_window_jni.h>
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#include "JNIHelper.h"
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//--------------------------------------------------------------------------------
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// Constants
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//--------------------------------------------------------------------------------
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//--------------------------------------------------------------------------------
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// Class
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//--------------------------------------------------------------------------------
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/******************************************************************
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* OpenGL context handler
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* The class handles OpenGL and EGL context based on Android activity life cycle
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* The caller needs to call corresponding methods for each activity life cycle events as it's done in sample codes.
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*
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* Also the class initializes OpenGL ES3 when the compatible driver is installed in the device.
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* getGLVersion() returns 3.0~ when the device supports OpenGLES3.0
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*/
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class GLContext
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{
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private:
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//ELG configurations
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ANativeWindow* _window;
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EGLDisplay _display;
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EGLSurface _surface;
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EGLContext _context;
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EGLConfig _config;
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//Screen parameters
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int32_t _iWidth;
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int32_t _iHeight;
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int32_t _iColorSize;
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int32_t _iDepthSize;
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//Flags
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bool _bGLESInitialized;
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bool _bEGLContextInitialized;
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bool _bES3Support;
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float _fGLVersion;
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void initGLES();
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bool _bContextValid;
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void terminate();
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bool initEGLSurface();
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bool initEGLContext();
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public:
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static GLContext* getInstance()
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{
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//Singleton
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static GLContext instance;
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return &instance;
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}
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GLContext( GLContext const& );
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void operator=( GLContext const& );
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GLContext();
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virtual ~GLContext();
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bool init( ANativeWindow* window );
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EGLint swap();
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bool invalidate();
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void suspend();
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EGLint resume(ANativeWindow* window);
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int32_t getScreenWidth() { return _iWidth; }
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int32_t getScreenHeight() { return _iHeight; }
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int32_t getBufferColorSize() { return _iColorSize; }
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int32_t getBufferDepthSize() { return _iDepthSize; }
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float getGLVersion() { return _fGLVersion; }
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bool checkExtension( const char* extension );
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};
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#endif /* GLCONTEXT_H_ */
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