[Intel-gfx] [PATCH i-g-t 13/26] rendercopy/skl: Emit 3DSTATE_WM_HZ_OP

[Damien Lespiau]

From: Zhao Yakui <yakui.zhao at intel.com>

This is from that on BDW. Without it, the pixel pipeline can't work well.

Reviewed-by: Damien Lespiau <damien.lespiau at intel.com>
Signed-off-by: Zhao Yakui <yakui.zhao at intel.com>
Signed-off-by: Ben Widawsky <benjamin.widawsky at intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau at intel.com>
---
 lib/rendercopy_gen9.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/lib/rendercopy_gen9.c b/lib/rendercopy_gen9.c
index 1aacaa2..52fc90f 100644
--- a/lib/rendercopy_gen9.c
+++ b/lib/rendercopy_gen9.c
@@ -715,8 +715,19 @@ gen9_emit_ds(struct intel_batchbuffer *batch) {
 	OUT_BATCH(0);
 }
 
+
+static void
+gen8_emit_wm_hz_op(struct intel_batchbuffer *batch) {
+	OUT_BATCH(GEN8_3DSTATE_WM_HZ_OP | (5-2));
+	OUT_BATCH(0);
+	OUT_BATCH(0);
+	OUT_BATCH(0);
+	OUT_BATCH(0);
+}
+
 static void
 gen8_emit_null_state(struct intel_batchbuffer *batch) {
+	gen8_emit_wm_hz_op(batch);
 	gen8_emit_hs(batch);
 	OUT_BATCH(GEN7_3DSTATE_TE | (4-2));
 	OUT_BATCH(0);
-- 
1.8.3.1