gallium: add flush_resource context function

r600g needs explicit flushing before DRI2 buffers are presented on the screen.

v2: add (stub) implementations for all drivers, fix frontbuffer flushing
v3: fix galahad

Signed-off-by: Marek Olšák <[email protected]>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/gallium/drivers/softpipe/sp_surface.c b/src/gallium/drivers/softpipe/sp_surface.c
index 9e1523fcf3e..41f512dff4e 100644
--- a/src/gallium/drivers/softpipe/sp_surface.c
+++ b/src/gallium/drivers/softpipe/sp_surface.c
@@ -84,6 +84,12 @@ static void sp_blit(struct pipe_context *pipe,
 }
 
 static void
+sp_flush_resource(struct pipe_context *pipe,
+                  struct pipe_resource *resource)
+{
+}
+
+static void
 softpipe_clear_render_target(struct pipe_context *pipe,
                              struct pipe_surface *dst,
                              const union pipe_color_union *color,
@@ -127,4 +133,5 @@ sp_init_surface_functions(struct softpipe_context *sp)
    sp->pipe.clear_render_target = softpipe_clear_render_target;
    sp->pipe.clear_depth_stencil = softpipe_clear_depth_stencil;
    sp->pipe.blit = sp_blit;
+   sp->pipe.flush_resource = sp_flush_resource;
 }