[PATCH 1/2] simple-touch: Make sure shm formats have been enumerated.

[Paul Liétar]

The first roundtrip only ensures the globals have been enumerated by the
registry.

After binding wl_shm, we need a new roundtrip to make sure the formats
have been enumerated, otherwise we might check for has_argb too early.

This is similar to the simple-shm example.

Signed-off-by: Paul Liétar <paul at lietar.net>
---
 clients/simple-touch.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/clients/simple-touch.c b/clients/simple-touch.c
index d8439ac..d29912f 100644
--- a/clients/simple-touch.c
+++ b/clients/simple-touch.c
@@ -311,7 +311,12 @@ touch_create(int width, int height)
    touch->has_argb = 0;
    touch->registry = wl_display_get_registry(touch->display);
    wl_registry_add_listener(touch->registry, &registry_listener, touch);
-       wl_display_dispatch(touch->display);
+       wl_display_roundtrip(touch->display);
+       if (touch->shm == NULL) {
+               fprintf(stderr, "No wl_shm global\n");
+               exit(1);
+       }
+
    wl_display_roundtrip(touch->display);
 
    if (!touch->has_argb) {
-- 
1.9.3