[PATCH v4 3/7] ui/spice: Enable gl=on option for non-local or remote clients

[Vivek Kasireddy <vivek.kasireddy@intel.com>]

Newer versions of Spice server should be able to accept dmabuf
fds from Qemu for clients that are connected via the network.
In other words, when this option is enabled, Qemu would share
a dmabuf fd with Spice which would encode and send the data
associated with the fd to a client that could be located on
a different machine.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Cc: Frediano Ziglio <freddy77@gmail.com>
Cc: Dongwon Kim <dongwon.kim@intel.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
---
 include/ui/spice-display.h | 1 +
 ui/spice-core.c            | 4 ++++
 ui/spice-display.c         | 1 +
 3 files changed, 6 insertions(+)

diff --git a/include/ui/spice-display.h b/include/ui/spice-display.h
index e1a9b36185..f4922dd74b 100644
--- a/include/ui/spice-display.h
+++ b/include/ui/spice-display.h
@@ -151,6 +151,7 @@ struct SimpleSpiceCursor {
 };
 
 extern bool spice_opengl;
+extern bool remote_client;
 
 int qemu_spice_rect_is_empty(const QXLRect* r);
 void qemu_spice_rect_union(QXLRect *dest, const QXLRect *r);
diff --git a/ui/spice-core.c b/ui/spice-core.c
index 907b0e9a81..6c3bfe1d0f 100644
--- a/ui/spice-core.c
+++ b/ui/spice-core.c
@@ -848,9 +848,13 @@ static void qemu_spice_init(void)
 #ifdef HAVE_SPICE_GL
     if (qemu_opt_get_bool(opts, "gl", 0)) {
         if ((port != 0) || (tls_port != 0)) {
+#if SPICE_SERVER_VERSION >= 0x000f03 /* release 0.15.3 */
+            remote_client = 1;
+#else
             error_report("SPICE GL support is local-only for now and "
                          "incompatible with -spice port/tls-port");
             exit(1);
+#endif
         }
         egl_init(qemu_opt_get(opts, "rendernode"), DISPLAY_GL_MODE_ON, &error_fatal);
         spice_opengl = 1;
diff --git a/ui/spice-display.c b/ui/spice-display.c
index 9c39d2c5c8..9140169015 100644
--- a/ui/spice-display.c
+++ b/ui/spice-display.c
@@ -31,6 +31,7 @@
 #include "standard-headers/drm/drm_fourcc.h"
 
 bool spice_opengl;
+bool remote_client;
 
 int qemu_spice_rect_is_empty(const QXLRect* r)
 {
-- 
2.49.0