Mesa (master): i965: Add 2x MSAA support to the MCS allocation function.

[Kenneth Graunke]

Module: Mesa
Branch: master
Commit: db184d43b0573c00d911ef9e98fbaab26ebd6466
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=db184d43b0573c00d911ef9e98fbaab26ebd6466

Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Tue Jun 24 16:33:56 2014 -0700

i965: Add 2x MSAA support to the MCS allocation function.

2x MSAA also uses 8 bits, just like 4x.  More bits are unused.

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Jordan Justen <jordan.l.justen at intel.com>

---

 src/mesa/drivers/dri/i965/intel_mipmap_tree.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index 58e09b7..e4d67b9 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -1251,6 +1251,7 @@ intel_miptree_alloc_mcs(struct brw_context *brw,
     */
    mesa_format format;
    switch (num_samples) {
+   case 2:
    case 4:
       /* 8 bits/pixel are required for MCS data when using 4x MSAA (2 bits for
        * each sample).