Mesa (master): radeonsi: implement streamout flush properly

[Marek Olšák]

Module: Mesa
Branch: master
Commit: 91ede462222fa7c0d95e0550a31d4fd56a37beac
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=91ede462222fa7c0d95e0550a31d4fd56a37beac

Author: Marek Olšák <marek.olsak at amd.com>
Date:   Mon Sep  2 12:57:46 2013 +0200

radeonsi: implement streamout flush properly

Reviewed-by: Michel Dänzer <michel.daenzer at amd.com>

---

 src/gallium/drivers/radeonsi/si_state_draw.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c b/src/gallium/drivers/radeonsi/si_state_draw.c
index 3529660..e65b0cf 100644
--- a/src/gallium/drivers/radeonsi/si_state_draw.c
+++ b/src/gallium/drivers/radeonsi/si_state_draw.c
@@ -649,10 +649,16 @@ void si_emit_cache_flush(struct r600_common_context *rctx, struct r600_atom *ato
 		radeon_emit(cs, EVENT_TYPE(V_028A90_FLUSH_AND_INV_CB_META) | EVENT_INDEX(0));
 	}
 
+	if (rctx->flags & R600_CONTEXT_STREAMOUT_FLUSH) {
+		/* Needed if streamout buffers are going to be used as a source. */
+		radeon_emit(cs, PKT3(PKT3_EVENT_WRITE, 0, 0));
+		radeon_emit(cs, EVENT_TYPE(V_028A90_VS_PARTIAL_FLUSH) | EVENT_INDEX(4));
+	}
+
 	rctx->flags = 0;
 }
 
-const struct r600_atom si_atom_cache_flush = { si_emit_cache_flush, 9 }; /* number of CS dwords */
+const struct r600_atom si_atom_cache_flush = { si_emit_cache_flush, 11 }; /* number of CS dwords */
 
 void si_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *info)
 {