c0567b54c5
To TeapotNativeActivity and MoreTeapotsNativeActivity, respectively Change-Id: Iddbb326ef246232e64a9c30138edb55efe86230d
126 lines
3.3 KiB
C++
126 lines
3.3 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 <EGL/egl.h>
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#include <GLES2/gl2.h>
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#include <android/log.h>
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#include "JNIHelper.h"
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namespace ndk_helper
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{
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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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* Thread safety: OpenGL context is expecting used within dedicated single thread,
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* thus GLContext class is not designed as a thread-safe
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*/
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class GLContext
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{
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private:
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//EGL 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 screen_width_;
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int32_t screen_height_;
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int32_t color_size_;
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int32_t depth_size_;
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//Flags
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bool gles_initialized_;
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bool egl_context_initialized_;
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bool es3_supported_;
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float gl_version_;
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bool context_valid_;
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void InitGLES();
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void Terminate();
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bool InitEGLSurface();
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bool InitEGLContext();
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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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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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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()
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{
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return screen_width_;
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}
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int32_t GetScreenHeight()
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{
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return screen_height_;
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}
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int32_t GetBufferColorSize()
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{
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return color_size_;
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}
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int32_t GetBufferDepthSize()
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{
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return depth_size_;
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}
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float GetGLVersion()
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{
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return gl_version_;
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}
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bool CheckExtension( const char* extension );
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};
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} //namespace ndkHelper
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#endif /* GLCONTEXT_H_ */
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