st/mesa: fix reversed copyimage canonical format

The format_desc swizzle describes where in the array each color channel
comes from - but the existing code was written as if each entry in the
swizzle described the meaning of an array element.

Fixes piglit's arb_copy_image-format-swizzle.

Cc: "11.1 11.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

diff --git a/src/mesa/state_tracker/st_cb_copyimage.c b/src/mesa/state_tracker/st_cb_copyimage.c
index a1cf15f..617e470 100644 (file)
--- a/src/mesa/state_tracker/st_cb_copyimage.c
+++ b/src/mesa/state_tracker/st_cb_copyimage.c
@@ -161,9 +161,9 @@ get_canonical_format(enum pipe_format format)
             RETURN_FOR_SWIZZLE4(Z, Y, X, W, PIPE_FORMAT_B8G8R8A8_UNORM);
             RETURN_FOR_SWIZZLE4(Z, Y, X, 1, PIPE_FORMAT_B8G8R8A8_UNORM);
             RETURN_FOR_SWIZZLE4(W, Z, Y, X, PIPE_FORMAT_A8B8G8R8_UNORM);
-            RETURN_FOR_SWIZZLE4(1, Z, Y, X, PIPE_FORMAT_A8B8G8R8_UNORM);
-            RETURN_FOR_SWIZZLE4(W, X, Y, Z, PIPE_FORMAT_A8R8G8B8_UNORM);
-            RETURN_FOR_SWIZZLE4(1, X, Y, Z, PIPE_FORMAT_A8R8G8B8_UNORM);
+            RETURN_FOR_SWIZZLE4(W, Z, Y, 1, PIPE_FORMAT_A8B8G8R8_UNORM);
+            RETURN_FOR_SWIZZLE4(Y, Z, W, X, PIPE_FORMAT_A8R8G8B8_UNORM);
+            RETURN_FOR_SWIZZLE4(Y, Z, W, 1, PIPE_FORMAT_A8R8G8B8_UNORM);
             break;
 
          case 16: