10
I try to initialize GLES with EGL (because I want to draw from the main thread instead of using a Renderer and drawing from inside onDrawFrame). I get the error: "Make sure the SurfaceView or associated SurfaceHolder has a valid Surface". Obviously mEgl.eglCreateWindowSurface fails because surfaceHolder has not a valid surface. How do I get a SurfaceHolder with a valid Surface to proceed?
My Activity.onCreate method is:
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,
mEglConfig, surfaceHolder, null);
Log.v("HelloAndroid", "N");
mEgl.eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface,
mEglContext);
Log.v("HelloAndroid", "O");
}
The log output I get with platform-tools/adb logcat is:
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/HelloAndroi