[PULL 19/24] ui: check gtk-egl dmabuf support

[Gerd Hoffmann]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210204105232.834642-16-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 include/ui/gtk.h | 1 +
 ui/gtk.c         | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/include/ui/gtk.h b/include/ui/gtk.h
index 7569d090fa95..aaef884b95b4 100644
--- a/include/ui/gtk.h
+++ b/include/ui/gtk.h
@@ -48,6 +48,7 @@ typedef struct VirtualGfxConsole {
     int cursor_y;
     bool y0_top;
     bool scanout_mode;
+    bool has_dmabuf;
 #endif
 } VirtualGfxConsole;
 
diff --git a/ui/gtk.c b/ui/gtk.c
index 00045881b121..f41c396cb98a 100644
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -623,6 +623,13 @@ static const DisplayChangeListenerOps dcl_ops = {
 
 #if defined(CONFIG_OPENGL)
 
+static bool gd_has_dmabuf(DisplayChangeListener *dcl)
+{
+    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
+
+    return vc->gfx.has_dmabuf;
+}
+
 /** DisplayState Callbacks (opengl version) **/
 
 static const DisplayChangeListenerOps dcl_gl_area_ops = {
@@ -661,6 +668,7 @@ static const DisplayChangeListenerOps dcl_egl_ops = {
     .dpy_gl_cursor_position  = gd_egl_cursor_position,
     .dpy_gl_release_dmabuf   = gd_egl_release_dmabuf,
     .dpy_gl_update           = gd_egl_scanout_flush,
+    .dpy_has_dmabuf          = gd_has_dmabuf,
 };
 
 #endif /* CONFIG_OPENGL */
@@ -2004,6 +2012,7 @@ static GSList *gd_vc_gfx_init(GtkDisplayState *s, 
VirtualConsole *vc,
             gtk_widget_set_double_buffered(vc->gfx.drawing_area, FALSE);
 #pragma GCC diagnostic pop
             vc->gfx.dcl.ops = &dcl_egl_ops;
+            vc->gfx.has_dmabuf = qemu_egl_has_dmabuf();
         }
     } else
 #endif
-- 
2.29.2