virgl: add virgl_renderer_resource_export_blob

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>

src/virglrenderer.c

@@ -751,3 +751,24 @@ int virgl_renderer_resource_get_map_info(uint32_t res_handle, uint32_t *map_info
 
    return vrend_renderer_resource_get_map_info(res->pipe_resource, map_info);
 }
+
+int
+virgl_renderer_resource_export_blob(uint32_t res_id, uint32_t *fd_type, int *fd)
+{
+   struct virgl_resource *res = virgl_resource_lookup(res_id);
+   if (!res)
+      return EINVAL;
+
+   switch (virgl_resource_export_fd(res, fd)) {
+   case VIRGL_RESOURCE_FD_DMABUF:
+      *fd_type = VIRGL_RENDERER_BLOB_FD_TYPE_DMABUF;
+      break;
+   case VIRGL_RESOURCE_FD_OPAQUE:
+      *fd_type = VIRGL_RENDERER_BLOB_FD_TYPE_OPAQUE;
+      break;
+   default:
+      return EINVAL;
+   }
+
+   return 0;
+}

src/virglrenderer.h

@@ -291,6 +291,12 @@ VIRGL_EXPORT int virgl_renderer_resource_unmap(uint32_t res_handle);
 
 VIRGL_EXPORT int virgl_renderer_resource_get_map_info(uint32_t res_handle, uint32_t *map_info);
 
+#define VIRGL_RENDERER_BLOB_FD_TYPE_DMABUF        0x0001
+#define VIRGL_RENDERER_BLOB_FD_TYPE_OPAQUE        0x0002
+
+VIRGL_EXPORT int
+virgl_renderer_resource_export_blob(uint32_t res_id, uint32_t *fd_type, int *fd);
+
 #endif /* VIRGL_RENDERER_UNSTABLE_APIS */
 
 #endif