diff --git a/gdk/gdkglcontext.c b/gdk/gdkglcontext.c
index dbfe2341e0..a7c8279d9b 100644
--- a/gdk/gdkglcontext.c
+++ b/gdk/gdkglcontext.c
@@ -110,6 +110,7 @@ typedef struct {
   guint has_unpack_subimage : 1;
   guint has_debug_output : 1;
   guint has_bgra : 1;
+  guint has_image_storage : 1;
   guint extensions_checked : 1;
   guint debug_enabled : 1;
   guint forward_compatible : 1;
@@ -1558,6 +1559,8 @@ gdk_gl_context_check_extensions (GdkGLContext *context)
                    epoxy_has_gl_extension ("GL_ARB_sync") ||
                    epoxy_has_gl_extension ("GL_APPLE_sync");
 
+  priv->has_image_storage = epoxy_has_gl_extension ("GL_EXT_EGL_image_storage");
+
 #ifdef G_ENABLE_DEBUG
   {
     int max_texture_size;
@@ -1897,6 +1900,14 @@ gdk_gl_context_has_vertex_arrays (GdkGLContext *self)
     }
 }
 
+gboolean
+gdk_gl_context_has_image_storage (GdkGLContext *self)
+{
+  GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (self);
+
+  return priv->has_image_storage;
+}
+
 /* This is currently private! */
 /* When using GL/ES, don't flip the 'R' and 'B' bits on Windows/ANGLE for glReadPixels() */
 gboolean
diff --git a/gdk/gdkglcontextprivate.h b/gdk/gdkglcontextprivate.h
index 5fcfd0aae2..d604422c97 100644
--- a/gdk/gdkglcontextprivate.h
+++ b/gdk/gdkglcontextprivate.h
@@ -161,6 +161,8 @@ gboolean                gdk_gl_context_has_bgra                 (GdkGLContext
 
 gboolean                gdk_gl_context_has_vertex_arrays        (GdkGLContext    *self) G_GNUC_PURE;
 
+gboolean                gdk_gl_context_has_image_storage        (GdkGLContext    *self) G_GNUC_PURE;
+
 double                  gdk_gl_context_get_scale                (GdkGLContext    *self);
 
 G_END_DECLS