radeonsi: implement streamout flush properly

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

diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c b/src/gallium/drivers/radeonsi/si_state_draw.c
index 3529660645f80dfcbd001096ca70d42da271f799..e65b0cfa3e71e9a47316e41eb42a3dabc4628e88 100644 (file)
--- 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)
 {