我尝试用EGL初始化GLES(因为我想从主线程中绘制)
而不是使用渲染器和从onDrawFrame内部绘图).我收到错误：“确保SurfaceView或相关的SurfaceHolder具有有效的Surface”.显然mEgl.eglCreateWindowSurface失败,因为surfaceHolder没有有效的表面.如何获得具有有效Surface的SurfaceHolder？
而不是使用渲染器和从onDrawFrame内部绘图).我收到错误：“确保SurfaceView或相关的SurfaceHolder具有有效的Surface”.显然mEgl.eglCreateWindowSurface失败,因为surfaceHolder没有有效的表面.如何获得具有有效Surface的SurfaceHolder？
我的Activity.onCreate方法是：
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
GLSurfaceView surfaceView = new GLSurfaceView(this);
setContentView(surfaceView);
SurfaceHolder surfaceHolder = surfaceView.getHolder();
Surface surface = surfaceHolder.getSurface();
Log.v("HelloAndroid","surface.isValid()= " + Boolean.toString(surface.isValid()));
EGL10 mEgl = (EGL10) EGLContext.getEGL();
EGLDisplay mEglDisplay = mEgl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);
int[] version = new int[2];
mEgl.eglInitialize(mEglDisplay,version);
EGLConfig[] configs = new EGLConfig[1];
int[] num_config = new int[1];
int[] configSpec = {
EGL10.EGL_NONE
};
mEgl.eglChooseConfig(mEglDisplay,configSpec,configs,1,num_config);
EGLConfig mEglConfig = configs[0];
EGLContext mEglContext = mEgl.eglCreateContext(mEglDisplay,mEglConfig,EGL10.EGL_NO_CONTEXT,null);
EGLSurface mEglSurface = null;
Log.v("HelloAndroid","M");
mEglSurface = mEgl.eglCreateWindowSurface(mEglDisplay,surfaceHolder,null);
Log.v("HelloAndroid","N");
mEgl.eglMakeCurrent(mEglDisplay,mEglSurface,mEglContext);
Log.v("HelloAndroid","O");
}
我使用platform-tools / adb logcat获得的日志输出是：
V/HelloAndroid( 1861): surface.isValid()= false
D/libEGL ( 1861): egl.cfg not found,using default config
D/libEGL ( 1861): loaded /system/lib/egl/libGLES_android.so
V/HelloAndroid( 1861): M
D/AndroidRuntime( 1861): Shutting down VM
W/dalvikvm( 1861): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
E/AndroidRuntime( 1861): Uncaught handler: thread main exiting due to uncaught exception
E/AndroidRuntime( 1861): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.helloandroid/com.example.helloandroid.HelloAndroid}: java.lang.IllegalArgumentException: Make sure the SurfaceView or associated SurfaceHolder has a valid Surface
E/AndroidRuntime( 1861): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496)
任何帮助表示赞赏.
