[PATCH xserver 1/5] xwayland: Allow "-eglstream" option

[Olivier Fourdan]

The command line option "-eglstream" used to enable EGLi stream support
for NVidia GPU was made available only when Xwayland was built with EGL
stream support enabled.

Wayland compositors who spawn Xwayland have no easy way to tell whether
or not Xwayland was built with EGL stream support enabled, and adding
"-eglstream" command line option to Xwayland when it wasn't built with
EGL support would prevent Xwayland from starting (“Unrecognized option”
error).

Make sure we support the command line option "-eglstream" regardless of
EGL stream support in Xwayland, obviously without EGL stream support
this has no effect.

Signed-off-by: Olivier Fourdan <ofourdan at redhat.com>
---
 hw/xwayland/xwayland.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/hw/xwayland/xwayland.c b/hw/xwayland/xwayland.c
index 1d6b49979..b4049d2cc 100644
--- a/hw/xwayland/xwayland.c
+++ b/hw/xwayland/xwayland.c
@@ -96,9 +96,7 @@ ddxUseMsg(void)
     ErrorF("-rootless              run rootless, requires wm support\n");
     ErrorF("-wm fd                 create X client for wm on given fd\n");
     ErrorF("-listen fd             add give fd as a listen socket\n");
-#ifdef XWL_HAS_EGLSTREAM
     ErrorF("-eglstream             use eglstream backend for nvidia GPUs\n");
-#endif
 }
 
 int
@@ -117,11 +115,9 @@ ddxProcessArgument(int argc, char *argv[], int i)
     else if (strcmp(argv[i], "-shm") == 0) {
         return 1;
     }
-#ifdef XWL_HAS_EGLSTREAM
     else if (strcmp(argv[i], "-eglstream") == 0) {
         return 1;
     }
-#endif
 
     return 0;
 }
@@ -988,11 +984,13 @@ xwl_screen_init(ScreenPtr pScreen, int argc, char **argv)
         else if (strcmp(argv[i], "-shm") == 0) {
             xwl_screen->glamor = 0;
         }
-#ifdef XWL_HAS_EGLSTREAM
         else if (strcmp(argv[i], "-eglstream") == 0) {
+#ifdef XWL_HAS_EGLSTREAM
             use_eglstreams = TRUE;
-        }
+#else
+            ErrorF("xwayland glamor: eglstream backend support not enabled\n");
 #endif
+        }
     }
 
 #ifdef XWL_HAS_GLAMOR
-- 
2.17.0