swr: Implement fence attached work queues for deferred deletion.

Work can now be added to fences and triggered by fence completion. This
allows for deferred resource deletion, and other asynchronous tasks.

Reviewed-by: George Kyriazis <[email protected]>

1 files changed, 17 insertions, 18 deletions

diff --git a/src/gallium/drivers/swr/swr_screen.cpp b/src/gallium/drivers/swr/swr_screen.cpp
index 7a46d092f41..a9905d79b4e 100644
--- a/src/gallium/drivers/swr/swr_screen.cpp
+++ b/src/gallium/drivers/swr/swr_screen.cpp
@@ -869,29 +869,28 @@ swr_resource_destroy(struct pipe_screen *p_screen, struct pipe_resource *pt)
    struct swr_resource *spr = swr_resource(pt);
    struct pipe_context *pipe = screen->pipe;
 
-   /* Only wait on fence if the resource is being used */
-   if (pipe && spr->status) {
-      /* But, if there's no fence pending, submit one.
-       * XXX: Remove once draw timestamps are implmented. */
-      if (!swr_is_fence_pending(screen->flush_fence))
-         swr_fence_submit(swr_context(pipe), screen->flush_fence);
-
+   if (spr->display_target) {
+      /* If resource is display target, winsys manages the buffer and will
+       * free it on displaytarget_destroy. */
       swr_fence_finish(p_screen, NULL, screen->flush_fence, 0);
-      swr_resource_unused(pt);
-   }
 
-   /*
-    * Free resource primary surface.  If resource is display target, winsys
-    * manages the buffer and will free it on displaytarget_destroy.
-    */
-   if (spr->display_target) {
-      /* display target */
       struct sw_winsys *winsys = screen->winsys;
       winsys->displaytarget_destroy(winsys, spr->display_target);
-   } else
-      AlignedFree(spr->swr.pBaseAddress);
 
-   AlignedFree(spr->secondary.pBaseAddress);
+   } else {
+      /* For regular resources, if the resource is being used, defer deletion
+       * (use aligned-free) */
+      if (pipe && spr->status) {
+         swr_resource_unused(pt);
+         swr_fence_work_free(screen->flush_fence,
+                             spr->swr.pBaseAddress, true);
+         swr_fence_work_free(screen->flush_fence, 
+                             spr->secondary.pBaseAddress, true);
+      } else {
+         AlignedFree(spr->swr.pBaseAddress);
+         AlignedFree(spr->secondary.pBaseAddress);
+      }
+   }
 
    FREE(spr);
 }