Add some checks

[nanogl.git] / eglwrap.cpp

diff --git a/eglwrap.cpp b/eglwrap.cpp
index ab575195d31a82fbdf9a95605718ac248a9235c3..0e6bd208514f5a779a13cb5e69427636e8d8262d 100644 (file)
--- a/eglwrap.cpp
+++ b/eglwrap.cpp
@@ -28,7 +28,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 extern "C++" GlESInterface* glEsImpl;
 extern "C++" void FlushOnStateChange();
-
+void gl_unimplemented();
 
 EGLint eglGetError (void)
     {
@@ -159,10 +159,14 @@ EGLContext eglGetCurrentContext (void)
     }
 EGLSurface eglGetCurrentSurface (EGLint readdraw)
     {
+       if( (void*)glEsImpl->eglGetCurrentSurface == (void*)gl_unimplemented )
+               return EGL_NO_SURFACE;
     return glEsImpl->eglGetCurrentSurface(readdraw);
     }
 EGLDisplay eglGetCurrentDisplay (void)
     {
+       if( (void*)glEsImpl->eglGetCurrentDisplay == (void*)gl_unimplemented )
+               return EGL_NO_DISPLAY;
     return glEsImpl->eglGetCurrentDisplay();
     }