Mesa (master): i965: Correct a mistake that always forced texture tiling.

[Matt Turner]

Module: Mesa
Branch: master
Commit: 1c175fc2e3a685b531920dec247086463ab9a154
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=1c175fc2e3a685b531920dec247086463ab9a154

Author: Matt Turner <mattst88 at gmail.com>
Date:   Tue Aug  4 22:58:08 2015 -0700

i965: Correct a mistake that always forced texture tiling.

Regression since commit 3a31876600, when tiling modes were moved into
layout_flags.

The relevant enum values are

   MIPTREE_LAYOUT_ALLOC_YTILED = 1 << 5
   MIPTREE_LAYOUT_ALLOC_XTILED = 1 << 6
   MIPTREE_LAYOUT_ALLOC_ANY_TILED = MIPTREE_LAYOUT_ALLOC_YTILED |
                                    MIPTREE_LAYOUT_ALLOC_XTILED
   MIPTREE_LAYOUT_ALLOC_LINEAR = 1 << 7

so the expression (layout_flags & MIPTREE_LAYOUT_ALLOC_ANY_TILED) can
never produce a value of MIPTREE_LAYOUT_ALLOC_LINEAR.

The enum this replaced was

   enum intel_miptree_tiling_mode {
      INTEL_MIPTREE_TILING_ANY,
      INTEL_MIPTREE_TILING_Y,
      INTEL_MIPTREE_TILING_NONE,
   };

where "ANY" means "Y" or "NONE" (i.e., linear). As such, remove the
unused (and worse, unhandled) MIPTREE_LAYOUT_ALLOC_XTILED and redefine
MIPTREE_LAYOUT_ALLOC_ANY_TILED to mean what it did before.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91513
Reviewed-by: Ben Widawsky <ben at bwidawsk.net>

---

 src/mesa/drivers/dri/i965/intel_mipmap_tree.h |    8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.h b/src/mesa/drivers/dri/i965/intel_mipmap_tree.h
index 89fdccb..506c258 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.h
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.h
@@ -537,13 +537,11 @@ enum {
    MIPTREE_LAYOUT_FORCE_HALIGN16           = 1 << 4,
 
    MIPTREE_LAYOUT_ALLOC_YTILED             = 1 << 5,
-   MIPTREE_LAYOUT_ALLOC_XTILED             = 1 << 6,
-   MIPTREE_LAYOUT_ALLOC_LINEAR             = 1 << 7,
+   MIPTREE_LAYOUT_ALLOC_LINEAR             = 1 << 6,
+   MIPTREE_LAYOUT_ALLOC_ANY_TILED          = MIPTREE_LAYOUT_ALLOC_YTILED |
+                                             MIPTREE_LAYOUT_ALLOC_LINEAR,
 };
 
-#define MIPTREE_LAYOUT_ALLOC_ANY_TILED (MIPTREE_LAYOUT_ALLOC_YTILED | \
-                                        MIPTREE_LAYOUT_ALLOC_XTILED)
-
 struct intel_mipmap_tree *intel_miptree_create(struct brw_context *brw,
                                                GLenum target,
 					       mesa_format format,