4 files changed, 79 insertions, 57 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_fence.c b/src/gallium/drivers/llvmpipe/lp_fence.c
index 1f96dcd81a..3a55e76bc3 100644
--- a/src/gallium/drivers/llvmpipe/lp_fence.c
+++ b/src/gallium/drivers/llvmpipe/lp_fence.c
@@ -76,58 +76,6 @@ lp_fence_destroy(struct lp_fence *fence)
 
 
 /**
- * For reference counting.
- * This is a Gallium API function.
- */
-static void
-llvmpipe_fence_reference(struct pipe_screen *screen,
-                         struct pipe_fence_handle **ptr,
-                         struct pipe_fence_handle *fence)
-{
-   struct lp_fence **old = (struct lp_fence **) ptr;
-   struct lp_fence *f = (struct lp_fence *) fence;
-
-   lp_fence_reference(old, f);
-}
-
-
-/**
- * Has the fence been executed/finished?
- * This is a Gallium API function.
- */
-static int
-llvmpipe_fence_signalled(struct pipe_screen *screen,
-                         struct pipe_fence_handle *fence,
-                         unsigned flag)
-{
-   struct lp_fence *f = (struct lp_fence *) fence;
-
-   return f->count == f->rank;
-}
-
-
-/**
- * Wait for the fence to finish.
- * This is a Gallium API function.
- */
-static int
-llvmpipe_fence_finish(struct pipe_screen *screen,
-                      struct pipe_fence_handle *fence_handle,
-                      unsigned flag)
-{
-   struct lp_fence *fence = (struct lp_fence *) fence_handle;
-
-   pipe_mutex_lock(fence->mutex);
-   while (fence->count < fence->rank) {
-      pipe_condvar_wait(fence->signalled, fence->mutex);
-   }
-   pipe_mutex_unlock(fence->mutex);
-
-   return 0;
-}
-
-
-/**
  * Called by the rendering threads to increment the fence counter.
  * When the counter == the rank, the fence is finished.
  */
@@ -153,11 +101,24 @@ lp_fence_signal(struct lp_fence *fence)
    pipe_mutex_unlock(fence->mutex);
 }
 
+boolean
+lp_fence_signalled(struct lp_fence *f)
+{
+   return f->count == f->rank;
+}
 
 void
-llvmpipe_init_screen_fence_funcs(struct pipe_screen *screen)
+lp_fence_wait(struct lp_fence *f)
 {
-   screen->fence_reference = llvmpipe_fence_reference;
-   screen->fence_signalled = llvmpipe_fence_signalled;
-   screen->fence_finish = llvmpipe_fence_finish;
+   if (LP_DEBUG & DEBUG_FENCE)
+      debug_printf("%s %d\n", __FUNCTION__, f->id);
+
+   pipe_mutex_lock(f->mutex);
+   assert(f->issued);
+   while (f->count < f->rank) {
+      pipe_condvar_wait(f->signalled, f->mutex);
+   }
+   pipe_mutex_unlock(f->mutex);
 }
+
+
diff --git a/src/gallium/drivers/llvmpipe/lp_fence.h b/src/gallium/drivers/llvmpipe/lp_fence.h
index b80af5c654..3c59118780 100644
--- a/src/gallium/drivers/llvmpipe/lp_fence.h
+++ b/src/gallium/drivers/llvmpipe/lp_fence.h
@@ -46,6 +46,7 @@ struct lp_fence
    pipe_mutex mutex;
    pipe_condvar signalled;
 
+   boolean issued;
    unsigned rank;
    unsigned count;
 };
@@ -58,6 +59,11 @@ lp_fence_create(unsigned rank);
 void
 lp_fence_signal(struct lp_fence *fence);
 
+boolean
+lp_fence_signalled(struct lp_fence *fence);
+
+void
+lp_fence_wait(struct lp_fence *fence);
 
 void
 llvmpipe_init_screen_fence_funcs(struct pipe_screen *screen);
@@ -79,5 +85,11 @@ lp_fence_reference(struct lp_fence **ptr,
    *ptr = f;
 }
 
+static INLINE boolean
+lp_fence_issued(const struct lp_fence *fence)
+{
+   return fence->issued;
+}
+
 
 #endif /* LP_FENCE_H */
diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c b/src/gallium/drivers/llvmpipe/lp_screen.c
index 14a156378a..9b7e0d51cd 100644
--- a/src/gallium/drivers/llvmpipe/lp_screen.c
+++ b/src/gallium/drivers/llvmpipe/lp_screen.c
@@ -317,6 +317,51 @@ llvmpipe_destroy_screen( struct pipe_screen *_screen )
 
 
 
+
+/**
+ * Fence reference counting.
+ */
+static void
+llvmpipe_fence_reference(struct pipe_screen *screen,
+                         struct pipe_fence_handle **ptr,
+                         struct pipe_fence_handle *fence)
+{
+   struct lp_fence **old = (struct lp_fence **) ptr;
+   struct lp_fence *f = (struct lp_fence *) fence;
+
+   lp_fence_reference(old, f);
+}
+
+
+/**
+ * Has the fence been executed/finished?
+ */
+static int
+llvmpipe_fence_signalled(struct pipe_screen *screen,
+                         struct pipe_fence_handle *fence,
+                         unsigned flag)
+{
+   struct lp_fence *f = (struct lp_fence *) fence;
+   return lp_fence_signalled(f);
+}
+
+
+/**
+ * Wait for the fence to finish.
+ */
+static int
+llvmpipe_fence_finish(struct pipe_screen *screen,
+                      struct pipe_fence_handle *fence_handle,
+                      unsigned flag)
+{
+   struct lp_fence *f = (struct lp_fence *) fence_handle;
+
+   lp_fence_wait(f);
+   return 0;
+}
+
+
+
 /**
  * Create a new pipe_screen object
  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
@@ -354,9 +399,11 @@ llvmpipe_create_screen(struct sw_winsys *winsys)
 
    screen->base.context_create = llvmpipe_create_context;
    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
+   screen->base.fence_reference = llvmpipe_fence_reference;
+   screen->base.fence_signalled = llvmpipe_fence_signalled;
+   screen->base.fence_finish = llvmpipe_fence_finish;
 
    llvmpipe_init_screen_resource_funcs(&screen->base);
-   llvmpipe_init_screen_fence_funcs(&screen->base);
 
    lp_jit_screen_init(screen);
 
diff --git a/src/gallium/drivers/llvmpipe/lp_setup.c b/src/gallium/drivers/llvmpipe/lp_setup.c
index 6eede83bfb..5389de8b63 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup.c
+++ b/src/gallium/drivers/llvmpipe/lp_setup.c
@@ -288,6 +288,8 @@ lp_setup_flush( struct lp_setup_context *setup,
          *fence = lp_setup_fence( setup );
       }
 
+      if (setup->scene->fence)
+         setup->scene->fence->issued = TRUE;
    }
 
    set_scene_state( setup, SETUP_FLUSHED );