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, 4 insertions, 3 deletions

diff --git a/src/gallium/drivers/i915/i915_flush.c b/src/gallium/drivers/i915/i915_flush.c
index 50d6642e5a3..d44b6f77c7f 100644
--- a/src/gallium/drivers/i915/i915_flush.c
+++ b/src/gallium/drivers/i915/i915_flush.c
@@ -39,7 +39,8 @@
 
 
 static void i915_flush_pipe( struct pipe_context *pipe,
-                             struct pipe_fence_handle **fence )
+                             struct pipe_fence_handle **fence,
+                             enum pipe_flush_flags flags )
 {
    struct i915_context *i915 = i915_context(pipe);
 
diff --git a/src/gallium/drivers/i915/i915_resource_texture.c b/src/gallium/drivers/i915/i915_resource_texture.c
index 76b232fd3e1..d9f58c01ac1 100644
--- a/src/gallium/drivers/i915/i915_resource_texture.c
+++ b/src/gallium/drivers/i915/i915_resource_texture.c
@@ -762,7 +762,7 @@ i915_texture_transfer_map(struct pipe_context *pipe,
    } else {
       /* TODO this is a sledgehammer */
       tex = i915_texture(resource);
-      pipe->flush(pipe, NULL);
+      pipe->flush(pipe, NULL, 0);
    }
 
    offset = i915_texture_offset(tex, transfer->b.level, box->z);
@@ -805,7 +805,7 @@ i915_texture_transfer_unmap(struct pipe_context *pipe,
                                    itransfer->b.box.x, itransfer->b.box.y, itransfer->b.box.z,
                                    itransfer->staging_texture,
                                    0, &sbox);
-      pipe->flush(pipe, NULL);
+      pipe->flush(pipe, NULL, 0);
       pipe_resource_reference(&itransfer->staging_texture, NULL);
    }