sna: Select the correct depth for addfb in test_has_dirtyfb()

It's 32bpp, depth 24 (for x8r8g8b8 pixel format), not 32 for everything.
Just to be on the safe side, pick the more common x8r8g8b8 format.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/sna/kgem.c b/src/sna/kgem.c
index 038ecc87..a4407ed6 100644
--- a/src/sna/kgem.c
+++ b/src/sna/kgem.c
@@ -1528,8 +1528,8 @@ static bool test_has_dirtyfb(struct kgem *kgem)
 	create.width = 32;
 	create.height = 32;
 	create.pitch = 4*32;
-	create.bpp = 32;
-	create.depth = 32;
+	create.bpp = 24;
+	create.depth = 32; /* {bpp:24, depth:32} -> x8r8g8b8 */
 	create.handle = gem_create(kgem->fd, 1);
 	if (create.handle == 0)
 		return false;