3 files changed, 18 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/r300_context.c b/src/gallium/drivers/r300/r300_context.c
index 9cc455135db..e6bc80e48f8 100644
--- a/src/gallium/drivers/r300/r300_context.c
+++ b/src/gallium/drivers/r300/r300_context.c
@@ -136,6 +136,13 @@ r300_is_buffer_referenced( struct pipe_context *pipe,
    return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 }
 
+static void r300_flush_cb(void *data)
+{
+    struct r300_context* const cs_context_copy = data;
+
+    cs_context_copy->context.flush(&cs_context_copy->context, 0, NULL);
+}
+
 struct pipe_context* r300_create_context(struct pipe_screen* screen,
                                          struct r300_winsys* r300_winsys)
 {
@@ -190,6 +197,8 @@ struct pipe_context* r300_create_context(struct pipe_screen* screen,
     r300_init_state_functions(r300);
 
     r300_emit_invariant_state(r300);
+
+    r300->winsys->set_flush_cb(r300->winsys, r300_flush_cb, r300);
     r300->dirty_state = R300_NEW_KITCHEN_SINK;
     r300->dirty_hw++;
 
diff --git a/src/gallium/drivers/r300/r300_emit.c b/src/gallium/drivers/r300/r300_emit.c
index 99deb50400f..64748ad8f81 100644
--- a/src/gallium/drivers/r300/r300_emit.c
+++ b/src/gallium/drivers/r300/r300_emit.c
@@ -658,6 +658,9 @@ void r300_emit_dirty_state(struct r300_context* r300)
 
     r300_update_derived_state(r300);
 
+    /* Clean out BOs. */
+    r300->winsys->reset_bos(r300->winsys);
+
     /* XXX check size */
 validate:
     /* Color buffers... */
diff --git a/src/gallium/drivers/r300/r300_winsys.h b/src/gallium/drivers/r300/r300_winsys.h
index f18ad75a47d..540f8eca92e 100644
--- a/src/gallium/drivers/r300/r300_winsys.h
+++ b/src/gallium/drivers/r300/r300_winsys.h
@@ -92,6 +92,12 @@ struct r300_winsys {
 
     /* Flush the CS. */
     void (*flush_cs)(struct r300_winsys* winsys);
+
+    /* winsys flush - callback from winsys when flush required */
+    void (*set_flush_cb)(struct r300_winsys *winsys,
+			 void (*flush_cb)(void *), void *data);
+
+    void (*reset_bos)(struct r300_winsys *winsys);
 };
 
 struct pipe_context* r300_create_context(struct pipe_screen* screen,