Mesa (master): pan/mdg: Fix discard encoding

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Module: Mesa
Branch: master
Commit: c8ac01af33a5bc63822915f08f89a7dbaf7d433f
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=c8ac01af33a5bc63822915f08f89a7dbaf7d433f

Author: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Date:   Mon Aug 31 14:04:55 2020 -0400

pan/mdg: Fix discard encoding

Let's match the blob.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Cc: mesa-stable
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6525>

---

 src/panfrost/midgard/midgard_emit.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/panfrost/midgard/midgard_emit.c b/src/panfrost/midgard/midgard_emit.c
index 2ad48c8ea74..a0fbe20c774 100644
--- a/src/panfrost/midgard/midgard_emit.c
+++ b/src/panfrost/midgard/midgard_emit.c
@@ -643,7 +643,8 @@ emit_branch(midgard_instruction *ins,
         int quadword_offset = 0;
 
         if (is_discard) {
-                /* Ignored */
+                /* Fixed encoding, not actually an offset */
+                quadword_offset = 0x2;
         } else if (is_tilebuf_wait) {
                 quadword_offset = -1;
         } else if (target_number > block->base.name) {