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]>

2 files changed, 9 insertions, 3 deletions

diff --git a/src/gallium/state_trackers/vega/api_context.c b/src/gallium/state_trackers/vega/api_context.c
index 19e42dd1562..055277cd76e 100644
--- a/src/gallium/state_trackers/vega/api_context.c
+++ b/src/gallium/state_trackers/vega/api_context.c
@@ -56,7 +56,7 @@ void vegaFlush(void)
       return;
 
    pipe = ctx->pipe;
-   pipe->flush(pipe, NULL);
+   pipe->flush(pipe, NULL, 0);
 
    vg_manager_flush_frontbuffer(ctx);
 }
@@ -72,7 +72,7 @@ void vegaFinish(void)
 
    pipe = ctx->pipe;
 
-   pipe->flush(pipe, &fence);
+   pipe->flush(pipe, &fence, 0);
    if (fence) {
       pipe->screen->fence_finish(pipe->screen, fence,
                                  PIPE_TIMEOUT_INFINITE);
diff --git a/src/gallium/state_trackers/vega/vg_manager.c b/src/gallium/state_trackers/vega/vg_manager.c
index c8531f8b53a..7b35f3afeeb 100644
--- a/src/gallium/state_trackers/vega/vg_manager.c
+++ b/src/gallium/state_trackers/vega/vg_manager.c
@@ -143,7 +143,13 @@ vg_context_flush(struct st_context_iface *stctxi, unsigned flags,
                  struct pipe_fence_handle **fence)
 {
    struct vg_context *ctx = (struct vg_context *) stctxi;
-   ctx->pipe->flush(ctx->pipe, fence);
+   enum pipe_flush_flags pipe_flags = 0;
+
+   if (flags & ST_FLUSH_END_OF_FRAME) {
+      pipe_flags |= PIPE_FLUSH_END_OF_FRAME;
+   }
+
+   ctx->pipe->flush(ctx->pipe, fence, pipe_flags);
    if (flags & ST_FLUSH_FRONT)
       vg_manager_flush_frontbuffer(ctx);
 }