[PATCH weston] compositor-drm: Allow ARGB8888 as a GBM format

[Derek Foreman]

As of mesa commit 65c8965d on some systems all formats that used to
be called XRGB8888 are now ARGB8888 and we can't launch weston.

This allows setting ARGB8888 as a format in weston.ini (but does not
change the default)

Signed-off-by: Derek Foreman <derekf at osg.samsung.com>
---
 man/weston.ini.man   | 1 +
 src/compositor-drm.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/man/weston.ini.man b/man/weston.ini.man
index 7a353c9..4d2b1c0 100644
--- a/man/weston.ini.man
+++ b/man/weston.ini.man
@@ -139,6 +139,7 @@ directory are:
 .TP 7
 .BI "gbm-format="format
 sets the GBM format used for the framebuffer for the GBM backend. Can be
+.B argb8888,
 .B xrgb8888,
 .B xrgb2101010,
 .B rgb565.
diff --git a/src/compositor-drm.c b/src/compositor-drm.c
index ed4eabf..b6ea8b8 100644
--- a/src/compositor-drm.c
+++ b/src/compositor-drm.c
@@ -1917,6 +1917,8 @@ get_gbm_format_from_section(struct weston_config_section *section,
 
 	if (s == NULL)
 		*format = default_value;
+	else if (strcmp(s, "argb8888") == 0)
+		*format = GBM_FORMAT_ARGB8888;
 	else if (strcmp(s, "xrgb8888") == 0)
 		*format = GBM_FORMAT_XRGB8888;
 	else if (strcmp(s, "rgb565") == 0)
-- 
2.1.4