gallium: Make sure we flush before some texture / buffer operations.

Also implement context member functions to optimize away those
flushes whenever possible.

Signed-off-by: Thomas Hellstrom <thellstrom-at-vmware-dot-com>

1 files changed, 26 insertions, 0 deletions

diff --git a/src/gallium/drivers/nv40/nv40_context.c b/src/gallium/drivers/nv40/nv40_context.c
index 5d325f5067f..8eba6a43ef9 100644
--- a/src/gallium/drivers/nv40/nv40_context.c
+++ b/src/gallium/drivers/nv40/nv40_context.c
@@ -31,6 +31,29 @@ nv40_destroy(struct pipe_context *pipe)
 	FREE(nv40);
 }
 
+static unsigned int
+nv40_is_texture_referenced( struct pipe_context *pipe,
+			    struct pipe_texture *texture,
+			    unsigned face, unsigned level)
+{
+   /**
+    * FIXME: Optimize.
+    */
+
+   return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
+}
+
+static unsigned int
+nv40_is_buffer_referenced( struct pipe_context *pipe,
+			   struct pipe_buffer *buf)
+{
+   /**
+    * FIXME: Optimize.
+    */
+
+   return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
+}
+
 struct pipe_context *
 nv40_create(struct pipe_screen *pscreen, unsigned pctx_id)
 {
@@ -55,6 +78,9 @@ nv40_create(struct pipe_screen *pscreen, unsigned pctx_id)
 	nv40->pipe.clear = nv40_clear;
 	nv40->pipe.flush = nv40_flush;
 
+	nv40->pipe.is_texture_referenced = nv40_is_texture_referenced;
+	nv40->pipe.is_buffer_referenced = nv40_is_buffer_referenced;
+
 	nv40_init_query_functions(nv40);
 	nv40_init_surface_functions(nv40);
 	nv40_init_state_functions(nv40);