4c1a12d824
Since the default alpha test function of GL_ALWAYS is equivalent to GL_ALPHA_TEST being disabled we don't need to worry about Enabling/Disabling it when flushing material state, instead it's enough to leave it always enabled. We will assume that any driver worth its salt wont incur any additional cost for glEnable (GL_ALPHA_TEST) + GL_ALWAYS vs glDisable (GL_ALPHA_TEST). This patch simply calls glEnable (GL_ALPHA_TEST) in cogl_create_context