virgl: reuse screen when fd is already open

It is necessary to share the screen between mesa and gralloc to
properly ref count resources. This implements a hash lookup on
the file description to re-use an already created screen. This is
a similar implementation as freedreno and radeon.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 1 insertions, 6 deletions

diff --git a/src/gallium/auxiliary/target-helpers/drm_helper.h b/src/gallium/auxiliary/target-helpers/drm_helper.h
index 332b1cb..90820d3 100644
--- a/src/gallium/auxiliary/target-helpers/drm_helper.h
+++ b/src/gallium/auxiliary/target-helpers/drm_helper.h
@@ -226,14 +226,9 @@ pipe_freedreno_create_screen(int fd)
 struct pipe_screen *
 pipe_virgl_create_screen(int fd)
 {
-   struct virgl_winsys *vws;
    struct pipe_screen *screen;
 
-   vws = virgl_drm_winsys_create(fd);
-   if (!vws)
-      return NULL;
-
-   screen = virgl_create_screen(vws);
+   screen = virgl_drm_screen_create(fd);
    return screen ? debug_screen_wrap(screen) : NULL;
 }