st/nine: Implement Fast path for dynamic buffers and csmt

Use the secondary pipe for DISCARD/NOOVERWRITE, which
avoids stalling to get the pipe from the worker thread.

v2: flush at unmap. This is required for example if
the driver does hidden draw calls or copies. In the case
of unsynchronized it is probably not required, but
it is more safe.

Signed-off-by: Axel Davy <[email protected]>

1 files changed, 6 insertions, 1 deletions

diff --git a/src/gallium/state_trackers/nine/buffer9.h b/src/gallium/state_trackers/nine/buffer9.h
index 49b67a9eaf9..d8024e4aac2 100644
--- a/src/gallium/state_trackers/nine/buffer9.h
+++ b/src/gallium/state_trackers/nine/buffer9.h
@@ -34,12 +34,17 @@ struct pipe_screen;
 struct pipe_context;
 struct pipe_transfer;
 
+struct NineTransfer {
+    struct pipe_transfer *transfer;
+    bool is_pipe_secondary;
+};
+
 struct NineBuffer9
 {
     struct NineResource9 base;
 
     /* G3D */
-    struct pipe_transfer **maps;
+    struct NineTransfer *maps;
     int nmaps, maxmaps;
     UINT size;