I develop an OpengGLES application for Windows Mobile.
I have some problem with refresh of opengles, because I draw 2D elements above opengles layer.
I would like to know if it's possible to define eglCreateWindowSurface only on a part of the screen ?
If not, is it possible to do glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) ; only on a part of the screen.

Thank you for your help.