How to use

EGLContext

in

android.opengl

/**
 * Returns true if our context and the specified surface are current.
 */
public boolean isCurrent(EGLSurface eglSurface) {
  return mEGLContext.equals(EGL14.eglGetCurrentContext()) &&
    eglSurface.equals(EGL14.eglGetCurrentSurface(EGL14.EGL_DRAW));
}

@Override
@SuppressLint("NewApi")
public long getNativeHandle() {
  return eglContext != null ?
    (BuildCheck.isLollipop()
      ? eglContext.getNativeHandle() : eglContext.getHandle()) : 0L;
}

/**
 * Returns true if our context and the specified surface are current.
 */
public boolean isCurrent(EGLSurface eglSurface) {
  return mEGLContext.equals(EGL14.eglGetCurrentContext()) &&
    eglSurface.equals(EGL14.eglGetCurrentSurface(EGL14.EGL_DRAW));
}

/**
 * Returns true if our context and the specified surface are current.
 */
public boolean isCurrent(EGLSurface eglSurface) {
  return mEGLContext.equals(EGL14.eglGetCurrentContext()) &&
    eglSurface.equals(EGL14.eglGetCurrentSurface(EGL14.EGL_DRAW));
}

/**
 * Returns true if our context and the specified surface are current.
 */
public boolean isCurrent(EGLSurface eglSurface) {
  return mEGLContext.equals(EGL14.eglGetCurrentContext()) &&
    eglSurface.equals(EGL14.eglGetCurrentSurface(EGL14.EGL_DRAW));
}

public void release() {
  if (EGL14.eglGetCurrentContext().equals(mEGLContext)) {
    EGL14.eglMakeCurrent(mEGLDisplay, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_CONTEXT);
  }
  EGL14.eglDestroySurface(mEGLDisplay, mEGLSurface);
  EGL14.eglDestroyContext(mEGLDisplay, mEGLContext);
  mSurface.release();
  mEGLDisplay = null;
  mEGLContext = null;
  mEGLSurface = null;
  mSurface = null;
}

public void release() {
  if (EGL14.eglGetCurrentContext().equals(mEGLContext)) {
    EGL14.eglMakeCurrent(mEGLDisplay, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_CONTEXT);
  }
  EGL14.eglDestroySurface(mEGLDisplay, mEGLSurface);
  EGL14.eglDestroyContext(mEGLDisplay, mEGLContext);
  mSurface.release();
  mEGLDisplay = null;
  mEGLContext = null;
  mEGLSurface = null;
  mSurface = null;
}

public void release() {
  if (EGL14.eglGetCurrentContext().equals(mEGLContext)) {
    EGL14.eglMakeCurrent(mEGLDisplay, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_CONTEXT);
  }
  EGL14.eglDestroySurface(mEGLDisplay, mEGLSurface);
  EGL14.eglDestroyContext(mEGLDisplay, mEGLContext);
  mSurface.release();
  mEGLDisplay = null;
  mEGLContext = null;
  mEGLSurface = null;
  mSurface = null;
}

/**
 * Discard all resources held by this class, notably the EGL context.  Also releases the
 * Surface that was passed to our constructor.
 */
public void release() {
  if (EGL14.eglGetCurrentContext().equals(mEGLContext)) {
    // Clear the current context and surface to ensure they are discarded immediately.
    EGL14.eglMakeCurrent(mEGLDisplay, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE,
        EGL14.EGL_NO_CONTEXT);
  }
  EGL14.eglDestroySurface(mEGLDisplay, mEGLSurface);
  EGL14.eglDestroyContext(mEGLDisplay, mEGLContext);
  //EGL14.eglTerminate(mEGLDisplay);
  mSurface.release();
  // null everything out so future attempts to use this object will cause an NPE
  mEGLDisplay = null;
  mEGLContext = null;
  mEGLSurface = null;
  mSurface = null;
}