gallium: extend pipe_context::flush for it to accept an END_OF_FRAME flag

Usage with pipe_context:
  pipe->flush(pipe, NULL, PIPE_FLUSH_END_OF_FRAME);

Usage with st_context_iface:
  st->flush(st, ST_FLUSH_END_OF_FRAME, NULL);

The flag is only a hint for drivers. Radeon will use it for buffer eviction
heuristics in the kernel (e.g. for queries like how many frames have passed
since a buffer was used).

The flag is currently only generated by st/dri on SwapBuffers.

Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Stéphane Marchesin <[email protected]>

1 files changed, 6 insertions, 5 deletions

diff --git a/src/mesa/state_tracker/st_cb_flush.c b/src/mesa/state_tracker/st_cb_flush.c
index 7c9f91f1bc7..b569e3b3c6f 100644
--- a/src/mesa/state_tracker/st_cb_flush.c
+++ b/src/mesa/state_tracker/st_cb_flush.c
@@ -76,15 +76,16 @@ display_front_buffer(struct st_context *st)
 }
 
 
-void st_flush( struct st_context *st,
-               struct pipe_fence_handle **fence )
+void st_flush(struct st_context *st,
+              struct pipe_fence_handle **fence,
+              enum pipe_flush_flags flags)
 {
    FLUSH_VERTICES(st->ctx, 0);
    FLUSH_CURRENT(st->ctx, 0);
 
    st_flush_bitmap_cache(st);
 
-   st->pipe->flush( st->pipe, fence );
+   st->pipe->flush(st->pipe, fence, flags);
 }
 
 
@@ -95,7 +96,7 @@ void st_finish( struct st_context *st )
 {
    struct pipe_fence_handle *fence = NULL;
 
-   st_flush(st, &fence);
+   st_flush(st, &fence, 0);
 
    if(fence) {
       st->pipe->screen->fence_finish(st->pipe->screen, fence,
@@ -118,7 +119,7 @@ static void st_glFlush(struct gl_context *ctx)
     * synchronization issues.  Calling finish() here will just hide
     * problems that need to be fixed elsewhere.
     */
-   st_flush(st, NULL);
+   st_flush(st, NULL, 0);
 
    if (is_front_buffer_dirty(st)) {
       display_front_buffer(st);