[mutter/gnome-3-26] renderer/native: Also allow EGL_KHR_platform_gbm extension string

[Jonas Ådahl <jadahl src gnome org>]

commit ce7dbfb3d9604dab268ac163601e66ff731ff42f
Author: memeka <mihailescu2m gmail com>
Date:   Fri Nov 3 03:59:00 2017 +0000

    renderer/native: Also allow EGL_KHR_platform_gbm extension string
    
    Proprietary drivers such as ARM Mali export EGL_KHR_platform_gbm instead
    of EGL_MESA_platform_gbm. As such, GBM platform check should be done for
    both MESA and non-MESA drivers.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=780668

 src/backends/native/meta-renderer-native.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/backends/native/meta-renderer-native.c b/src/backends/native/meta-renderer-native.c
index 4d1d890..2756e99 100644
--- a/src/backends/native/meta-renderer-native.c
+++ b/src/backends/native/meta-renderer-native.c
@@ -1879,6 +1879,9 @@ init_gbm (MetaRendererNative *renderer_native,
 
   if (!meta_egl_has_extensions (egl, EGL_NO_DISPLAY, NULL,
                                 "EGL_MESA_platform_gbm",
+                                NULL) &&
+      !meta_egl_has_extensions (egl, EGL_NO_DISPLAY, NULL,
+                                "EGL_KHR_platform_gbm",
                                 NULL))
     {
       g_set_error (error, G_IO_ERROR,