virgl: native fence fd support

Following the support for fences on the virtio driver add support
for native fence on virgl. This was somewhat based on the freedeno one.

Signed-off-by: Gustavo Padovan <[email protected]>
Signed-off-by: Robert Foss <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>

1 files changed, 11 insertions, 1 deletions

diff --git a/src/gallium/drivers/virgl/virgl_screen.c b/src/gallium/drivers/virgl/virgl_screen.c
index e71883b06f1..8addbea9e4c 100644
--- a/src/gallium/drivers/virgl/virgl_screen.c
+++ b/src/gallium/drivers/virgl/virgl_screen.c
@@ -340,7 +340,7 @@ virgl_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_VIDEO_MEMORY:
       return 0;
    case PIPE_CAP_NATIVE_FENCE_FD:
-      return 0;
+      return !!vscreen->vws->supports_fences;
    default:
       return u_pipe_screen_get_param_defaults(screen, param);
    }
@@ -721,6 +721,15 @@ static boolean virgl_fence_finish(struct pipe_screen *screen,
    return vws->fence_wait(vws, fence, timeout);
 }
 
+static int virgl_fence_get_fd(struct pipe_screen *screen,
+            struct pipe_fence_handle *fence)
+{
+   struct virgl_screen *vscreen = virgl_screen(screen);
+   struct virgl_winsys *vws = vscreen->vws;
+
+   return vws->fence_get_fd(vws, fence);
+}
+
 static uint64_t
 virgl_get_timestamp(struct pipe_screen *_screen)
 {
@@ -765,6 +774,7 @@ virgl_create_screen(struct virgl_winsys *vws)
    screen->base.fence_reference = virgl_fence_reference;
    //screen->base.fence_signalled = virgl_fence_signalled;
    screen->base.fence_finish = virgl_fence_finish;
+   screen->base.fence_get_fd = virgl_fence_get_fd;
 
    virgl_init_screen_resource_functions(&screen->base);