docs: public void makeCurrent(EGLSurface drawSurface, EGLSurface readSurface) {
          if (mEGLDisplay == EGL14.EGL_NO_DISPLAY) {
              // called makeCurrent() before create?
              Log.d(TAG, "NOTE: makeCurrent w/o display");
          }
          if (!EGL14.eglMakeCurrent(mEGLDisplay, drawSurface, readSurface, mEGLContext)) {
              throw new RuntimeException("eglMakeCurrent(draw,read) failed");
          }
      }