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Diffstat (limited to 'gdk/x11/gdkglcontext-x11.c')
-rw-r--r--gdk/x11/gdkglcontext-x11.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/gdk/x11/gdkglcontext-x11.c b/gdk/x11/gdkglcontext-x11.c
index f7763e3a0a..d9a49fdccb 100644
--- a/gdk/x11/gdkglcontext-x11.c
+++ b/gdk/x11/gdkglcontext-x11.c
@@ -1212,6 +1212,12 @@ gdk_x11_display_make_gl_context_current (GdkDisplay *display,
}
context_x11 = GDK_X11_GL_CONTEXT (context);
+ if (context_x11->glx_context == NULL)
+ {
+ g_critical ("No GLX context associated to the GdkGLContext; you must "
+ "call gdk_gl_context_realize() first.");
+ return FALSE;
+ }
GDK_NOTE (OPENGL,
g_print ("Making GLX context current to drawable %lu\n",