1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef CAR_EVS_APP_RENDERBASE_H 18 #define CAR_EVS_APP_RENDERBASE_H 19 20 #include <EGL/egl.h> 21 #include <EGL/eglext.h> 22 #include <GLES2/gl2.h> 23 #include <GLES2/gl2ext.h> 24 #include <GLES3/gl3.h> 25 #include <GLES3/gl3ext.h> 26 27 #include <android/hardware/automotive/evs/1.0/IEvsEnumerator.h> 28 29 using namespace ::android::hardware::automotive::evs::V1_0; 30 using ::android::sp; 31 32 33 /* 34 * Abstract base class for the workhorse classes that handle the user interaction and display for 35 * each mode of the EVS application. 36 */ 37 class RenderBase { 38 public: 39 virtual ~RenderBase() {}; 40 41 virtual bool activate() = 0; 42 virtual void deactivate() = 0; 43 44 virtual bool drawFrame(const BufferDesc& tgtBuffer) = 0; 45 46 protected: 47 static bool prepareGL(); 48 49 static bool attachRenderTarget(const BufferDesc& tgtBuffer); 50 static void detachRenderTarget(); 51 52 // OpenGL state shared among all renderers 53 static EGLDisplay sDisplay; 54 static EGLContext sContext; 55 static EGLSurface sDummySurface; 56 static GLuint sFrameBuffer; 57 static GLuint sColorBuffer; 58 static GLuint sDepthBuffer; 59 60 static EGLImageKHR sKHRimage; 61 62 static unsigned sWidth; 63 static unsigned sHeight; 64 static float sAspectRatio; 65 }; 66 67 68 #endif //CAR_EVS_APP_RENDERBASE_H 69
