Mesa (master): freedreno: initialize max_scissor

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Module: Mesa
Branch: master
Commit: 96b5a70f45612642265d7192e04e90206a4c260f
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=96b5a70f45612642265d7192e04e90206a4c260f

Author: Rob Clark <robdclark at chromium.org>
Date:   Sat May  9 12:31:20 2020 -0700

freedreno: initialize max_scissor

Somehow the initialization of this got lost somewhere along the way,
resulting in assuming minx/miny are always zero.

Signed-off-by: Rob Clark <robdclark at chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4976>

---

 src/gallium/drivers/freedreno/freedreno_batch_cache.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/gallium/drivers/freedreno/freedreno_batch_cache.c b/src/gallium/drivers/freedreno/freedreno_batch_cache.c
index 9edca679449..253b16e93d8 100644
--- a/src/gallium/drivers/freedreno/freedreno_batch_cache.c
+++ b/src/gallium/drivers/freedreno/freedreno_batch_cache.c
@@ -377,6 +377,14 @@ batch_from_key(struct fd_batch_cache *cache, struct key *key,
 	if (!batch)
 		return NULL;
 
+	/* reset max_scissor, which will be adjusted on draws
+	 * according to the actual scissor.
+	 */
+	batch->max_scissor.minx = ~0;
+	batch->max_scissor.miny = ~0;
+	batch->max_scissor.maxx = 0;
+	batch->max_scissor.maxy = 0;
+
 	fd_screen_lock(ctx->screen);
 
 	_mesa_hash_table_insert_pre_hashed(cache->ht, hash, key, batch);