Efficient Graphics and Portability with OpenGL ES - Pro Android Games - page 116

mArgs = args;
/*
* Setup the context factory for rendering. See ContextFactory class
* definition below
*/
setEGLContextFactory(new ContextFactory());
/*
* We need to choose an EGLConfig that matches the format of our surface
* exactly. This is going to be done in our custom config chooser. See
* ConfigChooser class definition below.
*/
setEGLConfigChooser(translucent ? new ConfigChooser(8, 8, 8, 8, depth,
stencil) : new ConfigChooser(5, 6, 5, 0, depth, stencil));
mRenderer = new ViewRenderer();
setRenderer(mRenderer);
}
private static class ContextFactory implements
GLSurfaceView.EGLContextFactory {
private static int EGL_CONTEXT_CLIENT_VERSION = 0x3098;
public EGLContext createContext(EGL10 egl, EGLDisplay display,
EGLConfig eglConfig) {
Log.w(TAG, "creating OpenGL ES 3.1 context");
checkEglError("Before eglCreateContext", egl);
int[] attrib_list = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL10.EGL_NONE };
EGLContext context = egl.eglCreateContext(display, eglConfig,
EGL10.EGL_NO_CONTEXT, attrib_list);
checkEglError("After eglCreateContext", egl);
return context;
}
public void destroyContext(EGL10 egl, EGLDisplay display,
EGLContext context) {
egl.eglDestroyContext(display, context);
}
}
private static void checkEglError(String prompt, EGL10 egl) {
int error;
while ((error = egl.eglGetError()) != EGL10.EGL_SUCCESS) {
Log.e(TAG, String.format("%s: EGL error: 0x%x", prompt, error));
}
}