[Mesa-stable] [PATCH 1/2] vl: add zig zag scan for list 4x4

[Leo Liu]

Cc: "11.0 11.1" <mesa-stable at lists.freedesktop.org>
Signed-off-by: Leo Liu <leo.liu at amd.com>
---
 src/gallium/auxiliary/vl/vl_zscan.c | 7 +++++++
 src/gallium/auxiliary/vl/vl_zscan.h | 1 +
 2 files changed, 8 insertions(+)

diff --git a/src/gallium/auxiliary/vl/vl_zscan.c b/src/gallium/auxiliary/vl/vl_zscan.c
index 1c6cdd4..5241471 100644
--- a/src/gallium/auxiliary/vl/vl_zscan.c
+++ b/src/gallium/auxiliary/vl/vl_zscan.c
@@ -49,6 +49,13 @@ enum VS_OUTPUT
    VS_O_VTEX = 0
 };
 
+const int vl_zscan_normal_16[] =
+{
+   /* Zig-Zag scan pattern */
+    0, 1, 4, 8, 5, 2, 3, 6,
+    9,12,13,10, 7,11,14,15
+};
+
 const int vl_zscan_linear[] =
 {
    /* Linear scan pattern */
diff --git a/src/gallium/auxiliary/vl/vl_zscan.h b/src/gallium/auxiliary/vl/vl_zscan.h
index eacee2d..268cf0a 100644
--- a/src/gallium/auxiliary/vl/vl_zscan.h
+++ b/src/gallium/auxiliary/vl/vl_zscan.h
@@ -64,6 +64,7 @@ struct vl_zscan_buffer
    struct pipe_surface *dst;
 };
 
+extern const int vl_zscan_normal_16[];
 extern const int vl_zscan_linear[];
 extern const int vl_zscan_normal[];
 extern const int vl_zscan_alternate[];
-- 
1.9.1