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 #include <aidl/android/hardware/automotive/evs/BufferDesc.h> 27 28 /* 29 * Abstract base class for the workhorse classes that handle the user interaction and display for 30 * each mode of the EVS application. 31 */ 32 class RenderBase { 33 public: ~RenderBase()34 virtual ~RenderBase() {}; 35 36 virtual bool activate() = 0; 37 virtual void deactivate() = 0; 38 39 virtual bool drawFrame( 40 const aidl::android::hardware::automotive::evs::BufferDesc& tgtBuffer) = 0; 41 42 protected: 43 static bool prepareGL(); 44 45 static bool attachRenderTarget( 46 const aidl::android::hardware::automotive::evs::BufferDesc& tgtBuffer); 47 static void detachRenderTarget(); 48 49 // OpenGL state shared among all renderers 50 static EGLDisplay sDisplay; 51 static EGLContext sContext; 52 static EGLSurface sMockSurface; 53 static GLuint sFrameBuffer; 54 static GLuint sColorBuffer; 55 static GLuint sDepthBuffer; 56 57 static EGLImageKHR sKHRimage; 58 59 static unsigned sWidth; 60 static unsigned sHeight; 61 static float sAspectRatio; 62 }; 63 64 #endif // CAR_EVS_APP_RENDERBASE_H 65